release 3.0

built by GitHub Actions:
https://github.com/JFormDesigner/FlatLaf/actions/runs/3554848392

.gitattributes

@@ -20,7 +20,9 @@
 *.gif binary
 *.jar binary
 *.lib binary
+*.otf binary
 *.png binary
 *.sketch binary
 *.so binary
+*.ttf binary
 *.zip binary

.github/FUNDING.yml

@@ -0,0 +1 @@
+custom: https://www.formdev.com/flatlaf/sponsor/

.github/workflows/ci.yml

@@ -1,4 +1,5 @@
-# https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions
+# https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-java-with-gradle
 
 name: CI
 
@@ -8,9 +9,6 @@ on:
       - '*'
     tags:
       - '[0-9]*'
-  pull_request:
-    branches: 
-      - '*'
 
 jobs:
   build:
@@ -26,30 +24,35 @@ jobs:
           - 8
           - 11  # LTS
           - 17  # LTS
+        toolchain: [""]
+        include:
+          - java: 17
+            toolchain: 19  # latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - uses: gradle/wrapper-validation-action@v1
         if: matrix.java == '8'
 
       - name: Setup Java ${{ matrix.java }}
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v3
         with:
           java-version: ${{ matrix.java }}
           distribution: adopt  # Java 8 and 11 are pre-installed on ubuntu-latest
           cache: gradle
 
       - name: Build with Gradle
-        run: ./gradlew build
+        run: ./gradlew build -Dtoolchain=${{ matrix.toolchain }}
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         if: matrix.java == '11'
         with:
           name: FlatLaf-build-artifacts
           path: |
             flatlaf-*/build/libs
+            flatlaf-*/flatlaf-*/build/libs
             !**/*-javadoc.jar
             !**/*-sources.jar
 
@@ -63,17 +66,17 @@ jobs:
       github.repository == 'JFormDesigner/FlatLaf'
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup Java 11
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v3
         with:
           java-version: 11
           distribution: adopt  # pre-installed on ubuntu-latest
           cache: gradle
 
       - name: Publish snapshot to oss.sonatype.org
-        run: ./gradlew publish :flatlaf-theme-editor:build -Dorg.gradle.internal.publish.checksums.insecure=true
+        run: ./gradlew publish :flatlaf-theme-editor:build -PskipFonts -Dorg.gradle.internal.publish.checksums.insecure=true
         env:
           OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
           OSSRH_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
@@ -99,17 +102,17 @@ jobs:
       github.repository == 'JFormDesigner/FlatLaf'
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup Java 11
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v3
         with:
           java-version: 11
           distribution: adopt  # pre-installed on ubuntu-latest
           cache: gradle
 
       - name: Release a new stable version to Maven Central
-        run: ./gradlew publish :flatlaf-demo:build :flatlaf-theme-editor:build -Drelease=true
+        run: ./gradlew publish :flatlaf-demo:build :flatlaf-theme-editor:build -PskipFonts -Prelease
         env:
           OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
           OSSRH_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}

.github/workflows/fonts.yml

@@ -0,0 +1,59 @@
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions
+# https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-java-with-gradle
+
+name: Fonts
+
+on:
+    push:
+        branches:
+            - '*'
+        tags:
+            - 'fonts/*-[0-9]*'
+        paths:
+            - 'flatlaf-fonts/**'
+            - '.github/workflows/fonts.yml'
+            - 'gradle/wrapper/gradle-wrapper.properties'
+
+jobs:
+    Fonts:
+        strategy:
+            matrix:
+                font:
+                    - inter
+                    - jetbrains-mono
+                    - roboto
+
+        runs-on: ubuntu-latest
+        if: |
+            github.event_name == 'push' &&
+            github.repository == 'JFormDesigner/FlatLaf'
+
+        steps:
+            - uses: actions/checkout@v3
+
+            - name: Setup Java 11
+              uses: actions/setup-java@v3
+              with:
+                  java-version: 11
+                  distribution: adopt  # pre-installed on ubuntu-latest
+                  cache: gradle
+
+            - name: Build with Gradle
+              run: ./gradlew :flatlaf-fonts-${{ matrix.font }}:build
+              if: startsWith( github.ref, format( 'refs/tags/fonts/{0}-', matrix.font ) ) != true
+
+            - name: Publish snapshot to oss.sonatype.org
+              run: ./gradlew :flatlaf-fonts-${{ matrix.font }}:publish -Dorg.gradle.internal.publish.checksums.insecure=true
+              env:
+                  OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
+                  OSSRH_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
+              if: github.ref == 'refs/heads/main' || startsWith( github.ref, 'refs/heads/develop-' )
+
+            - name: Release a new stable version to Maven Central
+              run: ./gradlew :flatlaf-fonts-${{ matrix.font }}:build :flatlaf-fonts-${{ matrix.font }}:publish -Prelease
+              env:
+                  OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
+                  OSSRH_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
+                  SIGNING_KEY:      ${{ secrets.SIGNING_KEY }}
+                  SIGNING_PASSWORD: ${{ secrets.SIGNING_PASSWORD }}
+              if: startsWith( github.ref, format( 'refs/tags/fonts/{0}-', matrix.font ) )

.github/workflows/natives.yml

@@ -1,4 +1,5 @@
-# https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions
+# https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-java-with-gradle
 
 name: Native Libraries
 
@@ -9,41 +10,41 @@ on:
         tags:
             - '[0-9]*'
         paths:
-            - 'flatlaf-natives/flatlaf-natives-windows/**'
+            - 'flatlaf-natives/**'
-            - '.github/workflows/natives.yml'
-            - 'gradle/wrapper/gradle-wrapper.properties'
-    pull_request:
-        branches:
-            - '*'
-        paths:
-            - 'flatlaf-natives/flatlaf-natives-windows/**'
             - '.github/workflows/natives.yml'
             - 'gradle/wrapper/gradle-wrapper.properties'
 
 jobs:
-    Windows:
+    Natives:
-        runs-on: windows-latest
+        strategy:
+            matrix:
+                os:
+                    - windows
+                    - ubuntu
+
+        runs-on: ${{ matrix.os }}-latest
 
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v3
 
             - uses: gradle/wrapper-validation-action@v1
 
             - name: Setup Java 11
-              uses: actions/setup-java@v2
+              uses: actions/setup-java@v3
               with:
                   java-version: 11
                   distribution: adopt
                   cache: gradle
 
             - name: Build with Gradle
-              # --no-daemon is necessary on Windows otherwise caching Gradle would fail with: 
+              # --no-daemon is necessary on Windows otherwise caching Gradle would fail with:
               #   tar.exe: Couldn't open ~/.gradle/caches/modules-2/modules-2.lock: Permission denied
-              run: ./gradlew :flatlaf-natives-windows:build --no-daemon
+              run: ./gradlew build-natives --no-daemon
 
             - name: Upload artifacts
-              uses: actions/upload-artifact@v2
+              uses: actions/upload-artifact@v3
               with:
-                  name: FlatLaf-natives-windows-build-artifacts
+                  name: FlatLaf-natives-build-artifacts-${{ matrix.os }}
                   path: |
-                      flatlaf-natives/flatlaf-natives-windows/build
+                      flatlaf-core/src/main/resources/com/formdev/flatlaf/natives
+                      flatlaf-natives/flatlaf-natives-*/build

.gitignore

@@ -9,5 +9,7 @@ out/
 *.iml
 *.ipr
 *.iws
+*.xcuserstate
+*.xcworkspacedata
 .vs/
 .vscode/

CHANGELOG.md

@@ -1,6 +1,201 @@
 FlatLaf Change Log
 ==================
 
+## 3.0
+
+#### New features and improvements
+
+- **macOS light and dark themes**: The two new themes `FlatMacLightLaf` and
+  `FlatMacDarkLaf` use macOS colors and look similar to native macOS controls.
+  (PRs #533, #612 and #607)
+- **Fonts**: Packaged some fonts into JARs and provide an easy way to use them
+  with FlatLaf. (PRs #545, #614 and #615) At the moment there are three fonts:
+  - **Inter** (https://rsms.me/inter/) - a typeface carefully crafted & designed
+    for computer screens
+  - **Roboto** (https://fonts.google.com/specimen/Roboto) - default font on
+    Android and recommended for Material Design
+  - **JetBrains Mono** (https://www.jetbrains.com/mono) - a monospaced typeface
+- **Rounded selection**: Optionally use rounded selection in:
+  - Menus (PR #536)
+  - ComboBox (PR #548)
+  - List (PR #547)
+  - Tree (PR #546)
+- Tree: Hide default closed/opened/leaf icons by default. Set UI value
+  `Tree.showDefaultIcons` to `true` to show them.
+- ToolBar: Hover effect for button groups. (PR #534)
+- Icons: New modern **rounded outlined icons** for `JFileChooser`,
+  `JOptionPane`, `JPasswordField` and `JTree`. (PR #577)
+
+#### Fixed bugs
+
+- FileChooser: Fixed layout of (optional) accessory component and fixed too
+  large right margin. (issue #604; regression since implementing PR #522 in
+  FlatLaf 2.3)
+- Tree:
+  - Fixed missing tree lines (if enabled) for wide-selected rows. (issue #598)
+  - Fixed scaling of tree lines and fixed alignment to expand/collapse arrows.
+  - Removed support for dashed tree lines. `Tree.lineTypeDashed` is now ignored.
+- SwingX: Fonts in `JXHeader`, `JXMonthView`, `JXTaskPane` and `JXTitledPanel`
+  were not updated when changing default font.
+
+
+## 2.6
+
+#### New features and improvements
+
+- If value of system property `flatlaf.nativeLibraryPath` is `system`, then
+  `System.loadLibrary(String)` is used to load the native library.
+- TabbedPane: Switch and close tabs on left mouse click only. (PR #595)
+
+#### Fixed bugs
+
+- ComboBox and Spinner: Fixed missing arrow buttons if preferred height is zero.
+  Minimum width of arrow buttons is 3/4 of default width.
+- MenuBar: Fixed NPE in `FlatMenuItemRenderer.getTopLevelFont()` if menu item
+  does not have a parent. (issue #600; regression since implementing #589 in
+  FlatLaf 2.5)
+- ScrollBar: Show "pressed" feedback on track/thumb only for left mouse button.
+  If absolute positioning is enabled (the default), then also for middle mouse
+  button.
+- Arrow buttons in ComboBox, Spinner, ScrollBar and TabbedPane: Show "pressed"
+  feedback only for left mouse button.
+- ScaledImageIcon: Do not throw exceptions if image was has invalid size (e.g.
+  not found). Instead, paint a red rectangle (similar to `FlatSVGIcon`).
+- Fixed NPE in `FlatUIUtils.isCellEditor()`. (issue #601)
+
+
+## 2.5
+
+#### New features and improvements
+
+- Linux: Use X11 window manager events to move window and to show window menu
+  (right-click on window title bar), if custom window decorations are enabled.
+  This gives FlatLaf windows a more "native" feeling. (issue #482)
+- MenuBar: Support different menu selection style UI defaults for `MenuBar` and
+  `MenuItem`. (issue #587)
+- MenuBar: Top level menus now use `MenuBar.font` instead of `Menu.font`. (issue
+  #589)
+- PasswordField: Reveal button is now hidden (and turned off) if password field
+  is disabled. (issue #501)
+- TabbedPane: New option to disable tab run rotation in wrap layout. Set UI
+  value `TabbedPane.rotateTabRuns` to `false`. (issue #574)
+- Window decorations:
+  - Added client property to mark components in embedded menu bar as "caption"
+    (allow moving window). (issue #569)
+  - Option to show window icon only in frames, but not in dialogs. Set UI value
+    `TitlePane.showIconInDialogs` to `false`. (issue #589)
+  - Added UI value `TitlePane.font` to customize window title font. (issue #589)
+- Added system property `flatlaf.updateUIOnSystemFontChange` to allow disabling
+  automatic UI update when system font changes. (issue #580)
+
+#### Fixed bugs
+
+- Fixed missing UI value `MenuItem.acceleratorDelimiter` on macOS. (was `null`,
+  is now an empty string)
+- Fixed possible exception in `FlatUIUtils.resetRenderingHints()`. (issue #575)
+- Fixed AWT components on macOS, which use Swing components internally. (issue
+  #583)
+- SwingX: Fixed missing highlighting of "today" in `JXMonthView` and
+  `JXDatePicker`.
+
+
+## 2.4
+
+#### New features and improvements
+
+- Native window decorations (Windows 10/11 only):
+  - There is now a small area at top of the embedded menu bar to resize the
+    window.
+  - Improved window title bar layout for small window widths:
+    - Width of iconify/maximize/close buttons is reduced (if necessary) to give
+      more space to embedded menu bar and title.
+    - Window title now has a minimum width to always allow moving window
+      (click-and-drag on window title). Instead, embedded menu bar is made
+      smaller.
+    - Option to show window icon beside window title, if menu bar is embedded or
+      title is centered. Set UI value `TitlePane.showIconBesideTitle` to `true`.
+  - No longer reduce height of window title bar if it has an embedded menu bar
+    and is maximized.
+
+#### Fixed bugs
+
+- ComboBox: Fixed vertical alignment of text in popup list with text in combo
+  box in IntelliJ/Darcula themes.
+- Menus: Fixed application freeze under very special conditions (invoking
+  `FlatLaf.initialize()` twice in NetBeans GUI builder) and using menu that has
+  submenus. See
+  [NetBeans issue #4231](https://github.com/apache/netbeans/issues/4231#issuecomment-1179611682)
+  for details.
+- MenuItem: Fixed sometimes wrapped HTML text on HiDPI screens on Windows.
+- TableHeader: Fixed exception when changing table structure (e.g. removing
+  column) from a table header popup menu action. (issue #532)
+- `HiDPIUtils.paintAtScale1x()` now supports rotated graphics. (issue #557)
+- Typography: No longer use `Consolas` or `Courier New` as monospaced font on
+  Windows because they have bad vertically placement.
+- Native window decorations (Windows 10/11 only):
+  - Do not center window title if embedded menu bar is empty or has no menus at
+    left side, but some components at right side. (issue #558)
+  - Do not use window decorations if system property `sun.java2d.opengl` is
+    `true` on Windows 10. (issue #540)
+  - Fixed missing top window border in dark themes if window drop shadows are
+    disabled in system settings. (issue #554; Windows 10 only)
+  - Right-to-left component orientation of title bar was lost when switching
+    theme.
+
+
+## 2.3
+
+#### New features and improvements
+
+- FileChooser: Added (optional) shortcuts panel. On Windows it contains "Recent
+  Items", "Desktop", "Documents", "This PC" and "Network". On macOS and Linux it
+  is empty/hidden. (issue #100)
+- Button and ToggleButton: Added missing foreground colors for hover, pressed,
+  focused and selected states. (issue #535)
+- Table: Optionally paint alternating rows below table if table is smaller than
+  scroll pane. Set UI value `Table.paintOutsideAlternateRows` to `true`.
+  Requires that `Table.alternateRowColor` is set to a color. (issue #504)
+- ToggleButton: Made the underline placement of tab-style toggle buttons
+  configurable. (PR #530; issue #529)
+- Added spanish translation. (PR #525)
+
+#### Fixed bugs
+
+- IntelliJ Themes: Fixed `TitledBorder` text color in "Monokai Pro" theme.
+  (issue #524)
+
+
+## 2.2
+
+#### New features and improvements
+
+- SplitPane: Allow limiting one-touch expanding to a single side (set client
+  property `JSplitPane.expandableSide` to `"left"` or `"right"`). (issue #355)
+- TabbedPane: Selected tab underline color now changes depending on whether the
+  focus is within the tab content. (issue #398)
+- IntelliJ Themes:
+  - Added "Monokai Pro" and "Xcode-Dark" themes.
+  - TabbedPane now use different background color for selected tabs in all "Arc"
+    themes, in "Hiberbee Dark" and in all "Material UI Lite" themes.
+
+#### Fixed bugs
+
+- Native window decorations (Windows 10/11 only): Fixed wrong window title
+  character encoding used in Windows taskbar. (issue #502)
+- Button: Fixed icon layout and preferred width of default buttons that use bold
+  font. (issue #506)
+- FileChooser: Enabled full row selection for details view to fix alternate row
+  coloring. (issue #512)
+- SplitPane: Fixed `StackOverflowError` caused by layout loop that may occur
+  under special circumstances. (issue #513)
+- Table: Slightly changed grid colors to make grid better recognizable. (issue
+  #514)
+- ToolBar: Fixed endless loop in focus navigation that may occur under special
+  circumstances. (issue #505)
+- IntelliJ Themes: `Component.accentColor` UI property now has useful theme
+  specific values. (issue #507)
+
+
 ## 2.1
 
 #### New features and improvements
@@ -110,7 +305,7 @@ FlatLaf Change Log
   - Possibility to hide window title bar icon (for single window set client
     property `JRootPane.titleBarShowIcon` to `false`; for all windows set UI
     value `TitlePane.showIcon` to `false`).
-  - OptionPane: Hide window title bar icon by default. Can be be made visibly by
+  - OptionPane: Hide window title bar icon by default. Can be made visibly by
     setting UI default `OptionPane.showIcon` to `true`. (issue #416)
   - No longer show the Java "duke/cup" icon if no window icon image is set.
     (issue #416)

README.md

@@ -25,6 +25,17 @@ FlatLaf can use 3rd party themes created for IntelliJ Platform (see
 ![IntelliJ Platform Themes](images/intellij_platform_themes.png)
 
 
+Sponsors
+--------
+
+<a href="https://www.ej-technologies.com/"><img src="https://www.formdev.com/flatlaf/sponsor/ej-technologies.png" width="200" alt="ej-technologies" title="ej-technologies - Java APM, Java Profiler, Java Installer Builder"></a>
+&nbsp; &nbsp; &nbsp; &nbsp;
+<a href="https://www.dbvis.com/"><img src="https://www.formdev.com/flatlaf/sponsor/dbvisualizer.svg" width="200" alt="DbVisualizer" title="DbVisualizer - SQL Client and Editor"></a>
+&nbsp; &nbsp; &nbsp; &nbsp;
+<a href="https://www.dscsag.com/"><img src="https://www.formdev.com/flatlaf/sponsor/DSC.png" height="48" alt="DSC Software AG" title="DSC Software AG - Your Companion for Integrative PLM"></a>
+
+[Become a Sponsor](https://www.formdev.com/flatlaf/sponsor/)
+
 Demo
 ----
 
@@ -74,6 +85,8 @@ Addons
 - [SwingX](flatlaf-swingx) - support for SwingX components
 - [JIDE Common Layer](flatlaf-jide-oss) - support for JIDE Common Layer
   components
+- [Fonts](flatlaf-fonts) - some font families bundled in easy-to-use and
+  redistributable JARs
 
 
 Getting started
@@ -126,42 +139,64 @@ Buzz
 Applications using FlatLaf
 --------------------------
 
-- ![New](images/new.svg) [Ultorg](https://www.ultorg.com/) (**commercial**) - a
+- ![New](images/new.svg)
+  [JProfiler](https://www.ej-technologies.com/products/jprofiler/overview.html)
+  12 (**commercial**) - the award-winning all-in-one Java profiler
+- ![New](images/new.svg) [JFormDesigner](https://www.formdev.com/) 8
+  (**commercial**) - Java/Swing GUI Designer
+- ![New](images/new.svg) [Jeyla Studio](https://www.jeylastudio.com/) - Salon
+  Software
+- ![New](images/new.svg) [Fanurio](https://www.fanuriotimetracking.com/) 3.3.2
+  (**commercial**) - time tracking and billing for freelancers and teams
+- ![New](images/new.svg) [Antares](https://www.antarescircuit.io/) - a free,
+  powerful platform for designing, simulating and explaining digital circuits
+- ![New](images/new.svg)
+  [Logisim-evolution](https://github.com/logisim-evolution/logisim-evolution)
+  3.6 - Digital logic design tool and simulator
+- ![New](images/new.svg) [Cinecred](https://loadingbyte.com/cinecred/) - create
+  beautiful film credit sequences
+- ![New](images/new.svg) [tinyMediaManager](https://www.tinymediamanager.org/)
+  v4 (**commercial**) - a media management tool
+- ![New](images/new.svg) [Weasis](https://nroduit.github.io/) - medical DICOM
+  viewer used in healthcare by hospitals, health networks, etc
+- ![New](images/new.svg)
+  [Makelangelo Software](https://github.com/MarginallyClever/Makelangelo-software)
+  7.3.0 - for plotters, especially the wall-hanging polargraph
+- ![Hot](images/hot.svg) [Ultorg](https://www.ultorg.com/) (**commercial**) - a
   visual query system for relational databases
-- ![New](images/new.svg) [MooInfo](https://github.com/rememberber/MooInfo) -
+- [MooInfo](https://github.com/rememberber/MooInfo) - visual implementation of
-  visual implementation of OSHI, to view information about the system and
+  OSHI, to view information about the system and hardware
-  hardware
+- [Jailer](https://github.com/Wisser/Jailer) 11.2 - database subsetting and
-- ![New](images/new.svg) [Jailer](https://github.com/Wisser/Jailer) 11.2 -
+  relational data browsing tool
-  database subsetting and relational data browsing tool
+- ![Hot](images/hot.svg) [Apache NetBeans](https://netbeans.apache.org/) 11.3 -
-- [Apache NetBeans](https://netbeans.apache.org/) 11.3 - IDE for Java, PHP, HTML
+  IDE for Java, PHP, HTML and much more
-  and much more
 - [jclasslib bytecode viewer](https://github.com/ingokegel/jclasslib) 5.5
 - [KeyStore Explorer](https://keystore-explorer.org/) 5.4.3
-- ![New](images/new.svg)
+- ![Hot](images/hot.svg)
   [install4j](https://www.ej-technologies.com/products/install4j/overview.html)
   9.0 (**commercial**) - the powerful multi-platform Java installer builder
-- ![New](images/new.svg) [DbVisualizer](https://www.dbvis.com/) 12.0
+- ![Hot](images/hot.svg) [DbVisualizer](https://www.dbvis.com/) 12.0
   (**commercial**) - the universal database tool for developers, analysts and
   DBAs
-- ![New](images/new.svg) [MagicPlot](https://magicplot.com/) 3.0
+- ![Hot](images/hot.svg) [MagicPlot](https://magicplot.com/) 3.0
   (**commercial**) - Software for nonlinear fitting, plotting and data analysis
-- ![New](images/new.svg)
+- ![Hot](images/hot.svg)
   [Thermo-Calc](https://thermocalc.com/products/thermo-calc/) 2021a
   (**commercial**) - Thermodynamics and Properties Software
-- [OWASP ZAP](https://www.zaproxy.org/) 2.10 - the worlds most widely used web
+- ![Hot](images/hot.svg) [OWASP ZAP](https://www.zaproxy.org/) 2.10 - the worlds
-  app scanner
+  most widely used web app scanner
-- ![New](images/new.svg)
+- ![Hot](images/hot.svg)
   [Burp Suite Professional and Community Edition](https://portswigger.net/burp/pro)
   2020.11.2 (**commercial**) - the leading software for web security testing
-- ![New](images/new.svg)
+- [BurpCustomizer](https://github.com/CoreyD97/BurpCustomizer) - adds more
-  [BurpCustomizer](https://github.com/CoreyD97/BurpCustomizer) - adds more
   FlatLaf themes to Burp Suite
-- [JOSM](https://josm.openstreetmap.de/) - an extensible editor for
+- ![Hot](images/hot.svg) [JOSM](https://josm.openstreetmap.de/) - an extensible
-  [OpenStreetMap](https://www.openstreetmap.org/) (requires FlatLaf JOSM plugin)
+  editor for [OpenStreetMap](https://www.openstreetmap.org/) (requires FlatLaf
-- [jAlbum](https://jalbum.net/) 21 (**commercial**) - creates photo album
+  JOSM plugin)
-  websites
+- ![Hot](images/hot.svg) [jAlbum](https://jalbum.net/) 21 (**commercial**) -
-- ![New](images/new.svg) [PDF Studio](https://www.qoppa.com/pdfstudio/) 2021
+  creates photo album websites
-  (**commercial**) - create, review and edit PDF documents
+- [PDF Studio](https://www.qoppa.com/pdfstudio/) 2021 (**commercial**) - create,
+  review and edit PDF documents
 - [XMLmind XML Editor](https://www.xmlmind.com/xmleditor/) 9.3 (**commercial**)
 - [Total Validator](https://www.totalvalidator.com/) 15 (**commercial**) -
   checks your website
@@ -187,8 +222,8 @@ Applications using FlatLaf
   [mendelson AS2](https://mendelson-e-c.com/as2/),
   [AS4](https://mendelson-e-c.com/as4/) and
   [OFTP2](https://mendelson-e-c.com/oftp2) (**commercial**)
-- ![New](images/new.svg) [IGMAS+](https://www.gfz-potsdam.de/igmas) -
+- [IGMAS+](https://www.gfz-potsdam.de/igmas) - Interactive Gravity and Magnetic
-  Interactive Gravity and Magnetic Application System
+  Application System
 - [MeteoInfo](https://github.com/meteoinfo/MeteoInfo) 2.2 - GIS and scientific
   computation environment for meteorological community
 - [lsfusion platform](https://github.com/lsfusion/platform) 4 - information

build.gradle.kts

@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-val releaseVersion = "2.1"
+val releaseVersion = "3.0"
-val developmentVersion = "2.2-SNAPSHOT"
+val developmentVersion = "3.1-SNAPSHOT"
 
-version = if( java.lang.Boolean.getBoolean( "release" ) ) releaseVersion else developmentVersion
+version = if( rootProject.hasProperty( "release" ) ) releaseVersion else developmentVersion
 
 allprojects {
 	version = rootProject.version
@@ -37,6 +37,9 @@ println( "----------------------------------------------------------------------
 println( "FlatLaf Version: ${version}" )
 println( "Gradle ${gradle.gradleVersion} at ${gradle.gradleHomeDir}" )
 println( "Java ${System.getProperty( "java.version" )}" )
+val toolchainJavaVersion = System.getProperty( "toolchain" )
+if( !toolchainJavaVersion.isNullOrEmpty() )
+	println( "Java toolchain ${toolchainJavaVersion}" )
 println()
 
 

buildSrc/src/main/kotlin/flatlaf-cpp-library.gradle.kts

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2022 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+	`cpp-library`
+}
+
+library {
+	// disable debuggable for release builds to make shared libraries smaller
+	binaries.configureEach( CppSharedLibrary::class ) {
+		with( compileTask.get() ) {
+			if( name.contains( "Release" ) )
+				isDebuggable = false
+		}
+		with( linkTask.get() ) {
+			if( name.contains( "Release" ) )
+				debuggable.set( false )
+		}
+	}
+}
+
+tasks {
+	withType<CppCompile>().configureEach {
+		doFirst {
+			println( "Used Tool Chain:" )
+			println( "  - ${toolChain.get()}" )
+			println( "Available Tool Chains:" )
+			toolChains.forEach {
+				println( "  - $it" )
+			}
+		}
+	}
+}

buildSrc/src/main/kotlin/flatlaf-jni-headers.gradle.kts

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2022 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+open class JniHeadersExtension {
+	var headers: List<String> = emptyList()
+}
+
+val extension = project.extensions.create<JniHeadersExtension>( "flatlafJniHeaders" )
+
+
+tasks {
+	register<Copy>( "jni-headers" ) {
+		// depend on :flatlaf-core:compileJava because it generates the JNI headers
+		dependsOn( ":flatlaf-core:compileJava" )
+
+		from( project( ":flatlaf-core" ).buildDir.resolve( "generated/jni-headers" ) )
+		into( "src/main/headers" )
+		include( extension.headers )
+		filter<org.apache.tools.ant.filters.FixCrLfFilter>(
+			"eol" to org.apache.tools.ant.filters.FixCrLfFilter.CrLf.newInstance( "lf" )
+		)
+	}
+}

buildSrc/src/main/kotlin/flatlaf-module-info.gradle.kts

@@ -61,8 +61,6 @@ if( JavaVersion.current() >= JavaVersion.VERSION_1_9 ) {
 		}
 
 		jar {
-			manifest.attributes( "Multi-Release" to "true" )
-
 			from( sourceSets["module-info"].output ) {
 				include( "module-info.class" )
 			}

buildSrc/src/main/kotlin/flatlaf-publish.gradle.kts

@@ -80,7 +80,7 @@ publishing {
 
 			val releasesRepoUrl = "https://oss.sonatype.org/service/local/staging/deploy/maven2/"
 			val snapshotsRepoUrl = "https://oss.sonatype.org/content/repositories/snapshots/"
-			url = uri( if( java.lang.Boolean.getBoolean( "release" ) ) releasesRepoUrl else snapshotsRepoUrl )
+			url = uri( if( rootProject.hasProperty( "release" ) ) releasesRepoUrl else snapshotsRepoUrl )
 
 			credentials {
 				// get from gradle.properties
@@ -108,5 +108,5 @@ signing {
 
 // disable signing of snapshots
 tasks.withType<Sign>().configureEach {
-	onlyIf { java.lang.Boolean.getBoolean( "release" ) }
+	onlyIf { rootProject.hasProperty( "release" ) }
 }

buildSrc/src/main/kotlin/flatlaf-toolchain.gradle.kts

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2022 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+	java
+}
+
+val toolchainJavaVersion = System.getProperty( "toolchain" )
+if( !toolchainJavaVersion.isNullOrEmpty() ) {
+	java.toolchain {
+		languageVersion.set( JavaLanguageVersion.of( toolchainJavaVersion ) )
+	}
+}

flatlaf-core/build.gradle.kts

@@ -16,6 +16,7 @@
 
 plugins {
 	`java-library`
+	`flatlaf-toolchain`
 	`flatlaf-module-info`
 	`flatlaf-java9`
 	`flatlaf-publish`
@@ -29,7 +30,7 @@ dependencies {
 	testRuntimeOnly( "org.junit.jupiter:junit-jupiter-engine" )
 
 	// https://github.com/jtulach/netbeans-apitest
-	sigtest( "org.netbeans.tools:sigtest-maven-plugin:1.4" )
+	sigtest( "org.netbeans.tools:sigtest-maven-plugin:1.7" )
 }
 
 java {
@@ -43,11 +44,6 @@ tasks {
 		options.headerOutputDirectory.set( buildDir.resolve( "generated/jni-headers" ) )
 	}
 
-	processResources {
-		// build native libraries
-		dependsOn( ":flatlaf-natives-windows:assemble" )
-	}
-
 	jar {
 		archiveBaseName.set( "flatlaf" )
 
@@ -71,6 +67,9 @@ tasks {
 	test {
 		useJUnitPlatform()
 		testLogging.exceptionFormat = org.gradle.api.tasks.testing.logging.TestExceptionFormat.FULL
+
+		if( JavaVersion.current() >= JavaVersion.VERSION_1_9 )
+			jvmArgs( listOf( "--add-opens", "java.desktop/javax.swing.plaf.basic=ALL-UNNAMED" ) )
 	}
 
 	register( "sigtestGenerate" ) {
@@ -88,7 +87,7 @@ tasks {
 					"action" to "generate",
 					"fileName" to "${project.name}-sigtest.txt",
 					"classpath" to jar.get().outputs.files.asPath,
-					"packages" to "com.formdev.flatlaf,com.formdev.flatlaf.util",
+					"packages" to "com.formdev.flatlaf,com.formdev.flatlaf.themes,com.formdev.flatlaf.util",
 					"version" to version,
 					"release" to "1.8", // Java version
 					"failonerror" to "true" )

flatlaf-core/flatlaf-core-sigtest.txt

@@ -1,5 +1,5 @@
 #Signature file v4.1
-#Version 2.0
+#Version 2.6
 
 CLSS public abstract interface com.formdev.flatlaf.FlatClientProperties
 fld public final static java.lang.String BUTTON_TYPE = "JButton.buttonType"
@@ -11,6 +11,7 @@ fld public final static java.lang.String BUTTON_TYPE_TAB = "tab"
 fld public final static java.lang.String BUTTON_TYPE_TOOLBAR_BUTTON = "toolBarButton"
 fld public final static java.lang.String COMPONENT_FOCUS_OWNER = "JComponent.focusOwner"
 fld public final static java.lang.String COMPONENT_ROUND_RECT = "JComponent.roundRect"
+fld public final static java.lang.String COMPONENT_TITLE_BAR_CAPTION = "JComponent.titleBarCaption"
 fld public final static java.lang.String MENU_BAR_EMBEDDED = "JRootPane.menuBarEmbedded"
 fld public final static java.lang.String MINIMUM_HEIGHT = "JComponent.minimumHeight"
 fld public final static java.lang.String MINIMUM_WIDTH = "JComponent.minimumWidth"
@@ -30,6 +31,9 @@ fld public final static java.lang.String SELECT_ALL_ON_FOCUS_POLICY = "JTextFiel
 fld public final static java.lang.String SELECT_ALL_ON_FOCUS_POLICY_ALWAYS = "always"
 fld public final static java.lang.String SELECT_ALL_ON_FOCUS_POLICY_NEVER = "never"
 fld public final static java.lang.String SELECT_ALL_ON_FOCUS_POLICY_ONCE = "once"
+fld public final static java.lang.String SPLIT_PANE_EXPANDABLE_SIDE = "JSplitPane.expandableSide"
+fld public final static java.lang.String SPLIT_PANE_EXPANDABLE_SIDE_LEFT = "left"
+fld public final static java.lang.String SPLIT_PANE_EXPANDABLE_SIDE_RIGHT = "right"
 fld public final static java.lang.String SQUARE_SIZE = "JButton.squareSize"
 fld public final static java.lang.String STYLE = "FlatLaf.style"
 fld public final static java.lang.String STYLE_CLASS = "FlatLaf.styleClass"
@@ -72,6 +76,7 @@ fld public final static java.lang.String TABBED_PANE_TRAILING_COMPONENT = "JTabb
 fld public final static java.lang.String TAB_BUTTON_SELECTED_BACKGROUND = "JToggleButton.tab.selectedBackground"
 fld public final static java.lang.String TAB_BUTTON_UNDERLINE_COLOR = "JToggleButton.tab.underlineColor"
 fld public final static java.lang.String TAB_BUTTON_UNDERLINE_HEIGHT = "JToggleButton.tab.underlineHeight"
+fld public final static java.lang.String TAB_BUTTON_UNDERLINE_PLACEMENT = "JToggleButton.tab.underlinePlacement"
 fld public final static java.lang.String TEXT_FIELD_CLEAR_CALLBACK = "JTextField.clearCallback"
 fld public final static java.lang.String TEXT_FIELD_LEADING_COMPONENT = "JTextField.leadingComponent"
 fld public final static java.lang.String TEXT_FIELD_LEADING_ICON = "JTextField.leadingIcon"
@@ -181,6 +186,7 @@ meth public java.lang.String getID()
 meth public java.util.Map<java.lang.String,java.lang.String> getExtraDefaults()
 meth public javax.swing.Icon getDisabledIcon(javax.swing.JComponent,javax.swing.Icon)
 meth public javax.swing.UIDefaults getDefaults()
+meth public static <%0 extends java.lang.Object> {%%0} getStyleableValue(javax.swing.JComponent,java.lang.String)
 meth public static boolean install(javax.swing.LookAndFeel)
  anno 0 java.lang.Deprecated()
 meth public static boolean isLafDark()
@@ -189,6 +195,7 @@ meth public static boolean isUseNativeWindowDecorations()
 meth public static boolean setup(javax.swing.LookAndFeel)
 meth public static boolean supportsNativeWindowDecorations()
 meth public static java.lang.Object parseDefaultsValue(java.lang.String,java.lang.String,java.lang.Class<?>)
+meth public static java.util.Map<java.lang.String,java.lang.Class<?>> getStyleableInfos(javax.swing.JComponent)
 meth public static java.util.Map<java.lang.String,java.lang.String> getGlobalExtraDefaults()
 meth public static javax.swing.UIDefaults$ActiveValue createActiveFontValue(float)
 meth public static void hideMnemonics()
@@ -216,7 +223,7 @@ meth public void setExtraDefaults(java.util.Map<java.lang.String,java.lang.Strin
 meth public void uninitialize()
 meth public void unregisterUIDefaultsGetter(java.util.function.Function<java.lang.Object,java.lang.Object>)
 supr javax.swing.plaf.basic.BasicLookAndFeel
-hfds DESKTOPFONTHINTS,aquaLoaded,customDefaultsSources,desktopPropertyListener,desktopPropertyName,desktopPropertyName2,extraDefaults,globalExtraDefaults,mnemonicHandler,oldPopupFactory,postInitialization,uiDefaultsGetters,updateUIPending
+hfds DESKTOPFONTHINTS,aquaLoaded,customDefaultsSources,desktopPropertyListener,desktopPropertyName,desktopPropertyName2,extraDefaults,getUIMethod,getUIMethodInitialized,globalExtraDefaults,mnemonicHandler,oldPopupFactory,postInitialization,subMenuUsabilityHelperInstalled,uiDefaultsGetters,updateUIPending
 hcls ActiveFont,FlatUIDefaults,ImageIconUIResource
 
 CLSS public abstract interface static com.formdev.flatlaf.FlatLaf$DisabledIconProvider
@@ -255,6 +262,7 @@ fld public final static java.lang.String NATIVE_LIBRARY_PATH = "flatlaf.nativeLi
 fld public final static java.lang.String UI_SCALE = "flatlaf.uiScale"
 fld public final static java.lang.String UI_SCALE_ALLOW_SCALE_DOWN = "flatlaf.uiScale.allowScaleDown"
 fld public final static java.lang.String UI_SCALE_ENABLED = "flatlaf.uiScale.enabled"
+fld public final static java.lang.String UPDATE_UI_ON_SYSTEM_FONT_CHANGE = "flatlaf.updateUIOnSystemFontChange"
 fld public final static java.lang.String USE_JETBRAINS_CUSTOM_DECORATIONS = "flatlaf.useJetBrainsCustomDecorations"
 fld public final static java.lang.String USE_TEXT_Y_CORRECTION = "flatlaf.useTextYCorrection"
 fld public final static java.lang.String USE_UBUNTU_FONT = "flatlaf.useUbuntuFont"
@@ -596,6 +604,7 @@ supr java.lang.Object
 
 CLSS public com.formdev.flatlaf.util.NativeLibrary
 cons public init(java.io.File,boolean)
+cons public init(java.lang.String,boolean)
 cons public init(java.lang.String,java.lang.ClassLoader,boolean)
 meth public boolean isLoaded()
 supr java.lang.Object
@@ -662,6 +671,7 @@ CLSS public com.formdev.flatlaf.util.SystemInfo
 cons public init()
 fld public final static boolean isAARCH64
 fld public final static boolean isJava_11_orLater
+fld public final static boolean isJava_12_orLater
 fld public final static boolean isJava_15_orLater
 fld public final static boolean isJava_17_orLater
 fld public final static boolean isJava_18_orLater
@@ -670,6 +680,7 @@ fld public final static boolean isJetBrainsJVM
 fld public final static boolean isJetBrainsJVM_11_orLater
 fld public final static boolean isKDE
 fld public final static boolean isLinux
+fld public final static boolean isMacFullWindowContentSupported
 fld public final static boolean isMacOS
 fld public final static boolean isMacOS_10_11_ElCapitan_orLater
 fld public final static boolean isMacOS_10_14_Mojave_orLater

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatClientProperties.java

@@ -253,6 +253,19 @@ public interface FlatClientProperties
 	 */
 	String COMPONENT_FOCUS_OWNER = "JComponent.focusOwner";
 
+	/**
+	 * Specifies whether a component in an embedded menu bar should behave as caption
+	 * (left-click allows moving window, right-click shows window system menu).
+	 * The component does not receive mouse pressed/released/clicked/dragged events,
+	 * but it gets mouse entered/exited/moved events.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JComponent}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 *
+	 * @since 2.5
+	 */
+	String COMPONENT_TITLE_BAR_CAPTION = "JComponent.titleBarCaption";
+
 	//---- Popup --------------------------------------------------------------
 
 	/**
@@ -333,7 +346,7 @@ public interface FlatClientProperties
 
 	/**
 	 * Specifies whether the window icon should be shown in the window title bar
-	 * (requires enabled window decorations).
+	 * (requires enabled window decorations). Default is UI property {@code TitlePane.showIcon}.
 	 * <p>
 	 * Setting this shows/hides the windows icon
 	 * for the {@code JFrame} or {@code JDialog} that contains the root pane.
@@ -349,6 +362,62 @@ public interface FlatClientProperties
 	 */
 	String TITLE_BAR_SHOW_ICON = "JRootPane.titleBarShowIcon";
 
+	/**
+	 * Specifies whether the window title should be shown in the window title bar
+	 * (requires enabled window decorations). Default is {@code true}.
+	 * <p>
+	 * Setting this shows/hides the windows title
+	 * for the {@code JFrame} or {@code JDialog} that contains the root pane.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 *
+	 * @since 3
+	 */
+	String TITLE_BAR_SHOW_TITLE = "JRootPane.titleBarShowTitle";
+
+	/**
+	 * Specifies whether the "iconfify" button should be shown in the window title bar
+	 * (requires enabled window decorations). Default is {@code true}.
+	 * <p>
+	 * Setting this shows/hides the "iconfify" button
+	 * for the {@code JFrame} that contains the root pane.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 *
+	 * @since 3
+	 */
+	String TITLE_BAR_SHOW_ICONIFFY = "JRootPane.titleBarShowIconify";
+
+	/**
+	 * Specifies whether the "maximize/restore" button should be shown in the window title bar
+	 * (requires enabled window decorations). Default is {@code true}.
+	 * <p>
+	 * Setting this shows/hides the "maximize/restore" button
+	 * for the {@code JFrame} that contains the root pane.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 *
+	 * @since 3
+	 */
+	String TITLE_BAR_SHOW_MAXIMIZE = "JRootPane.titleBarShowMaximize";
+
+	/**
+	 * Specifies whether the "close" button should be shown in the window title bar
+	 * (requires enabled window decorations). Default is {@code true}.
+	 * <p>
+	 * Setting this shows/hides the "close" button
+	 * for the {@code JFrame} or {@code JDialog} that contains the root pane.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 *
+	 * @since 3
+	 */
+	String TITLE_BAR_SHOW_CLOSE = "JRootPane.titleBarShowClose";
+
 	/**
 	 * Background color of window title bar (requires enabled window decorations).
 	 * <p>
@@ -391,6 +460,40 @@ public interface FlatClientProperties
 	 */
 	String SCROLL_PANE_SMOOTH_SCROLLING = "JScrollPane.smoothScrolling";
 
+	//---- JSplitPane ---------------------------------------------------------
+
+	/**
+	 * Specifies what side of the spilt pane is allowed to expand
+	 * via one-touch expanding arrow buttons.
+	 * Requires that one-touch expanding is enabled with
+	 * {@link javax.swing.JSplitPane#setOneTouchExpandable(boolean)}.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JSplitPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.String}<br>
+	 * <strong>Allowed Values</strong>
+	 *     {@link #SPLIT_PANE_EXPANDABLE_SIDE_LEFT} or
+	 *     {@link #SPLIT_PANE_EXPANDABLE_SIDE_RIGHT}
+	 *
+	 * @since 2.2
+	 */
+	String SPLIT_PANE_EXPANDABLE_SIDE = "JSplitPane.expandableSide";
+
+	/**
+	 * Allow expanding only left/top side of the split pane.
+	 *
+	 * @see #SPLIT_PANE_EXPANDABLE_SIDE
+	 * @since 2.2
+	 */
+	String SPLIT_PANE_EXPANDABLE_SIDE_LEFT = "left";
+
+	/**
+	 * Allow expanding only right/bottom side of the split pane.
+	 *
+	 * @see #SPLIT_PANE_EXPANDABLE_SIDE
+	 * @since 2.2
+	 */
+	String SPLIT_PANE_EXPANDABLE_SIDE_RIGHT = "right";
+
 	//---- JTabbedPane --------------------------------------------------------
 
 	/**
@@ -958,7 +1061,22 @@ public interface FlatClientProperties
 	//---- JToggleButton ------------------------------------------------------
 
 	/**
-	 * Height of underline if toggle button type is {@link #BUTTON_TYPE_TAB}.
+	 * Placement of underline if toggle button type is {@link #BUTTON_TYPE_TAB}
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JToggleButton}<br>
+	 * <strong>Value type</strong> {@link java.lang.Integer}<br>
+	 * <strong>SupportedValues:</strong>
+	 *     {@link SwingConstants#BOTTOM} (default)
+	 *     {@link SwingConstants#TOP},
+	 *     {@link SwingConstants#LEFT} or
+	 *     {@link SwingConstants#RIGHT}
+	 *
+	 * @since 2.3
+	 */
+	String TAB_BUTTON_UNDERLINE_PLACEMENT = "JToggleButton.tab.underlinePlacement";
+
+	/**
+	 * Thickness of underline if toggle button type is {@link #BUTTON_TYPE_TAB}.
 	 * <p>
 	 * <strong>Component</strong> {@link javax.swing.JToggleButton}<br>
 	 * <strong>Value type</strong> {@link java.lang.Integer}

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatDarculaLaf.java

@@ -34,6 +34,8 @@ public class FlatDarculaLaf
 	/**
 	 * Sets the application look and feel to this LaF
 	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 *
+	 * @since 1.2
 	 */
 	public static boolean setup() {
 		return setup( new FlatDarculaLaf() );

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatDarkLaf.java

@@ -33,6 +33,8 @@ public class FlatDarkLaf
 	/**
 	 * Sets the application look and feel to this LaF
 	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 *
+	 * @since 1.2
 	 */
 	public static boolean setup() {
 		return setup( new FlatDarkLaf() );

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatIntelliJLaf.java

@@ -34,6 +34,8 @@ public class FlatIntelliJLaf
 	/**
 	 * Sets the application look and feel to this LaF
 	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 *
+	 * @since 1.2
 	 */
 	public static boolean setup() {
 		return setup( new FlatIntelliJLaf() );

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java

@@ -30,6 +30,9 @@ import java.awt.image.ImageProducer;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.io.File;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
 import java.lang.reflect.Method;
 import java.net.URL;
 import java.util.ArrayList;
@@ -63,6 +66,7 @@ import javax.swing.UIDefaults.LazyValue;
 import javax.swing.UIManager;
 import javax.swing.UnsupportedLookAndFeelException;
 import javax.swing.plaf.ColorUIResource;
+import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.FontUIResource;
 import javax.swing.plaf.IconUIResource;
 import javax.swing.plaf.UIResource;
@@ -73,6 +77,8 @@ import com.formdev.flatlaf.ui.FlatNativeWindowBorder;
 import com.formdev.flatlaf.ui.FlatPopupFactory;
 import com.formdev.flatlaf.ui.FlatRootPaneUI;
 import com.formdev.flatlaf.ui.FlatUIUtils;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
+import com.formdev.flatlaf.util.FontUtils;
 import com.formdev.flatlaf.util.GrayFilter;
 import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.MultiResolutionImageSupport;
@@ -93,6 +99,7 @@ public abstract class FlatLaf
 	private static List<Object> customDefaultsSources;
 	private static Map<String, String> globalExtraDefaults;
 	private Map<String, String> extraDefaults;
+	private static Function<String, Color> systemColorGetter;
 
 	private String desktopPropertyName;
 	private String desktopPropertyName2;
@@ -103,14 +110,21 @@ public abstract class FlatLaf
 
 	private PopupFactory oldPopupFactory;
 	private MnemonicHandler mnemonicHandler;
-	private SubMenuUsabilityHelper subMenuUsabilityHelper;
+	private boolean subMenuUsabilityHelperInstalled;
 
 	private Consumer<UIDefaults> postInitialization;
 	private List<Function<Object, Object>> uiDefaultsGetters;
 
+	private static String preferredFontFamily;
+	private static String preferredLightFontFamily;
+	private static String preferredSemiboldFontFamily;
+	private static String preferredMonospacedFontFamily;
+
 	/**
 	 * Sets the application look and feel to the given LaF
 	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 *
+	 * @since 1.2
 	 */
 	public static boolean setup( LookAndFeel newLookAndFeel ) {
 		try {
@@ -232,6 +246,15 @@ public abstract class FlatLaf
 
 	@Override
 	public void initialize() {
+		// do not initialize if this is not the current look and feel
+		//    This is only necessary for special Laf usage. E.g. in GUI builders,
+		//    which may use multiple Lafs and may invoke this method directly.
+		//    This avoids that listeners and factories are installed multiple times.
+		//    In case of the NetBeans GUI builder, which does not invoke uninitialize(),
+		//    this also avoids that listeners stay registered in the system.
+		if( UIManager.getLookAndFeel() != this )
+			return;
+
 		if( SystemInfo.isMacOS )
 			initializeAqua();
 
@@ -246,8 +269,7 @@ public abstract class FlatLaf
 		mnemonicHandler.install();
 
 		// install submenu usability helper
-		subMenuUsabilityHelper = new SubMenuUsabilityHelper();
+		subMenuUsabilityHelperInstalled = SubMenuUsabilityHelper.install();
-		subMenuUsabilityHelper.install();
 
 		// listen to desktop property changes to update UI if system font or scaling changes
 		if( SystemInfo.isWindows ) {
@@ -266,6 +288,9 @@ public abstract class FlatLaf
 		}
 		if( desktopPropertyName != null ) {
 			desktopPropertyListener = e -> {
+				if( !FlatSystemProperties.getBoolean( FlatSystemProperties.UPDATE_UI_ON_SYSTEM_FONT_CHANGE, true ) )
+					return;
+
 				String propertyName = e.getPropertyName();
 				if( desktopPropertyName.equals( propertyName ) || propertyName.equals( desktopPropertyName2 ) )
 					reSetLookAndFeel();
@@ -304,6 +329,10 @@ public abstract class FlatLaf
 
 	@Override
 	public void uninitialize() {
+		// do not uninitialize if this is not the current look and feel
+		if( UIManager.getLookAndFeel() != this )
+			return;
+
 		// remove desktop property listener
 		if( desktopPropertyListener != null ) {
 			Toolkit toolkit = Toolkit.getDefaultToolkit();
@@ -329,9 +358,9 @@ public abstract class FlatLaf
 		}
 
 		// uninstall submenu usability helper
-		if( subMenuUsabilityHelper != null ) {
+		if( subMenuUsabilityHelperInstalled ) {
-			subMenuUsabilityHelper.uninstall();
+			SubMenuUsabilityHelper.uninstall();
-			subMenuUsabilityHelper = null;
+			subMenuUsabilityHelperInstalled = false;
 		}
 
 		// restore default link color
@@ -559,6 +588,7 @@ public abstract class FlatLaf
 
 		// add fonts that are not set in BasicLookAndFeel
 		defaults.put( "RootPane.font", activeFont );
+		defaults.put( "TitlePane.font", activeFont );
 	}
 
 	private void initDefaultFont( UIDefaults defaults ) {
@@ -607,6 +637,13 @@ public abstract class FlatLaf
 		if( uiFont == null )
 			uiFont = createCompositeFont( Font.SANS_SERIF, Font.PLAIN, 12 );
 
+		// use preferred font family (if specified)
+		if( preferredFontFamily != null ) {
+			FontUIResource preferredFont = createCompositeFont( preferredFontFamily, uiFont.getStyle(), uiFont.getSize() );
+			if( !ActiveFont.isFallbackFont( preferredFont ) || ActiveFont.isDialogFamily( preferredFontFamily ) )
+				uiFont = preferredFont;
+		}
+
 		// get/remove "defaultFont" from defaults if set in properties files
 		// (use remove() to avoid that ActiveFont.createValue() gets invoked)
 		Object defaultFont = defaults.remove( "defaultFont" );
@@ -627,6 +664,9 @@ public abstract class FlatLaf
 	}
 
 	static FontUIResource createCompositeFont( String family, int style, int size ) {
+		// load lazy font family
+		FontUtils.loadFontFamily( family );
+
 		// using StyleContext.getFont() here because it uses
 		// sun.font.FontUtilities.getCompositeFontUIResource()
 		// and creates a composite font that is able to display all Unicode characters
@@ -874,14 +914,14 @@ public abstract class FlatLaf
 	 * E.g. using {@link UIManager#setLookAndFeel(LookAndFeel)} or {@link #setup(LookAndFeel)}.
 	 * <p>
 	 * The global extra defaults are useful for smaller additional defaults that may change.
-	 * E.g. accent color. Otherwise, FlatLaf properties files should be used.
+	 * Otherwise, FlatLaf properties files should be used.
 	 * See {@link #registerCustomDefaultsSource(String)}.
 	 * <p>
 	 * The keys and values are strings in same format as in FlatLaf properties files.
 	 * <p>
-	 * Sample that setups "FlatLaf Light" theme with red accent color:
+	 * Sample that setups "FlatLaf Light" theme with white background color:
 	 * <pre>{@code
-	 * FlatLaf.setGlobalExtraDefaults( Collections.singletonMap( "@accentColor", "#f00" ) );
+	 * FlatLaf.setGlobalExtraDefaults( Collections.singletonMap( "@background", "#fff" ) );
 	 * FlatLightLaf.setup();
 	 * }</pre>
 	 *
@@ -906,15 +946,15 @@ public abstract class FlatLaf
 	 * E.g. using {@link UIManager#setLookAndFeel(LookAndFeel)} or {@link #setup(LookAndFeel)}.
 	 * <p>
 	 * The extra defaults are useful for smaller additional defaults that may change.
-	 * E.g. accent color. Otherwise, FlatLaf properties files should be used.
+	 * Otherwise, FlatLaf properties files should be used.
 	 * See {@link #registerCustomDefaultsSource(String)}.
 	 * <p>
 	 * The keys and values are strings in same format as in FlatLaf properties files.
 	 * <p>
-	 * Sample that setups "FlatLaf Light" theme with red accent color:
+	 * Sample that setups "FlatLaf Light" theme with white background color:
 	 * <pre>{@code
 	 * FlatLaf laf = new FlatLightLaf();
-	 * laf.setExtraDefaults( Collections.singletonMap( "@accentColor", "#f00" ) );
+	 * laf.setExtraDefaults( Collections.singletonMap( "@background", "#fff" ) );
 	 * FlatLaf.setup( laf );
 	 * }</pre>
 	 *
@@ -956,6 +996,36 @@ public abstract class FlatLaf
 		return val;
 	}
 
+	/**
+	 * Returns the system color getter function, or {@code null}.
+	 *
+	 * @since 3
+	 */
+	public static Function<String, Color> getSystemColorGetter() {
+		return systemColorGetter;
+	}
+
+	/**
+	 * Sets a system color getter function that is invoked when function
+	 * {@code systemColor()} is used in FlatLaf properties files.
+	 * <p>
+	 * The name of the system color is passed as parameter to the function.
+	 * The function should return {@code null} for unknown system colors.
+	 * <p>
+	 * Can be used to change the accent color:
+	 * <pre>{@code
+	 * FlatLaf.setSystemColorGetter( name -> {
+	 *     return name.equals( "accent" ) ? Color.red : null;
+	 * } );
+	 * FlatLightLaf.setup();
+	 * }</pre>
+	 *
+	 * @since 3
+	 */
+	public static void setSystemColorGetter( Function<String, Color> systemColorGetter ) {
+		FlatLaf.systemColorGetter = systemColorGetter;
+	}
+
 	private static void reSetLookAndFeel() {
 		EventQueue.invokeLater( () -> {
 			LookAndFeel lookAndFeel = UIManager.getLookAndFeel();
@@ -1213,6 +1283,146 @@ public abstract class FlatLaf
 	 */
 	public static final Object NULL_VALUE = new Object();
 
+	/**
+	 * Returns information about styleable values of a component.
+	 * <p>
+	 * This is equivalent to: {@code ((StyleableUI)c.getUI()).getStyleableInfos(c)}
+	 *
+	 * @since 2.5
+	 */
+	public static Map<String, Class<?>> getStyleableInfos( JComponent c ) {
+		StyleableUI ui = getStyleableUI( c );
+		return (ui != null) ? ui.getStyleableInfos( c ) : null;
+	}
+
+	/**
+	 * Returns the (styled) value for the given key from the given component.
+	 * <p>
+	 * This is equivalent to: {@code ((StyleableUI)c.getUI()).getStyleableValue(c, key)}
+	 *
+	 * @since 2.5
+	 */
+	@SuppressWarnings( "unchecked" )
+	public static <T> T getStyleableValue( JComponent c, String key ) {
+		StyleableUI ui = getStyleableUI( c );
+		return (ui != null) ? (T) ui.getStyleableValue( c, key ) : null;
+	}
+
+	private static StyleableUI getStyleableUI( JComponent c ) {
+		if( !getUIMethodInitialized ) {
+			getUIMethodInitialized = true;
+
+			if( SystemInfo.isJava_9_orLater ) {
+				try {
+					// JComponent.getUI() is available since Java 9
+					getUIMethod = MethodHandles.lookup().findVirtual( JComponent.class, "getUI",
+						MethodType.methodType( ComponentUI.class ) );
+				} catch( Exception ex ) {
+					// ignore
+				}
+			}
+		}
+
+		try {
+			Object ui;
+			if( getUIMethod != null )
+				ui = getUIMethod.invoke( c );
+			else
+				ui = c.getClass().getMethod( "getUI" ).invoke( c );
+			return (ui instanceof StyleableUI) ? (StyleableUI) ui : null;
+		} catch( Throwable ex ) {
+			// ignore
+			return null;
+		}
+	}
+
+	private static boolean getUIMethodInitialized;
+	private static MethodHandle getUIMethod;
+
+	/**
+	 * Returns the preferred font family to be used for (nearly) all fonts; or {@code null}.
+	 *
+	 * @since 3
+	 */
+	public static String getPreferredFontFamily() {
+		return preferredFontFamily;
+	}
+
+	/**
+	 * Sets the preferred font family to be used for (nearly) all fonts.
+	 * <p>
+	 * <strong>Note</strong>: This must be invoked <strong>before</strong> setting
+	 * the application look and feel.
+	 *
+	 * @since 3
+	 */
+	public static void setPreferredFontFamily( String preferredFontFamily ) {
+		FlatLaf.preferredFontFamily = preferredFontFamily;
+	}
+
+	/**
+	 * Returns the preferred font family to be used for "light" fonts; or {@code null}.
+	 *
+	 * @since 3
+	 */
+	public static String getPreferredLightFontFamily() {
+		return preferredLightFontFamily;
+	}
+
+	/**
+	 * Sets the preferred font family to be used for "light" fonts.
+	 * <p>
+	 * <strong>Note</strong>: This must be invoked <strong>before</strong> setting
+	 * the application look and feel.
+	 *
+	 * @since 3
+	 */
+	public static void setPreferredLightFontFamily( String preferredLightFontFamily ) {
+		FlatLaf.preferredLightFontFamily = preferredLightFontFamily;
+	}
+
+	/**
+	 * Returns the preferred font family to be used for "semibold" fonts; or {@code null}.
+	 *
+	 * @since 3
+	 */
+	public static String getPreferredSemiboldFontFamily() {
+		return preferredSemiboldFontFamily;
+	}
+
+	/**
+	 * Sets the preferred font family to be used for "semibold" fonts.
+	 * <p>
+	 * <strong>Note</strong>: This must be invoked <strong>before</strong> setting
+	 * the application look and feel.
+	 *
+	 * @since 3
+	 */
+	public static void setPreferredSemiboldFontFamily( String preferredSemiboldFontFamily ) {
+		FlatLaf.preferredSemiboldFontFamily = preferredSemiboldFontFamily;
+	}
+
+	/**
+	 * Returns the preferred font family to be used for monospaced fonts; or {@code null}.
+	 *
+	 * @since 3
+	 */
+	public static String getPreferredMonospacedFontFamily() {
+		return preferredMonospacedFontFamily;
+	}
+
+	/**
+	 * Sets the preferred font family to be used for monospaced fonts.
+	 * <p>
+	 * <strong>Note</strong>: This must be invoked <strong>before</strong> setting
+	 * the application look and feel.
+	 *
+	 * @since 3
+	 */
+	public static void setPreferredMonospacedFontFamily( String preferredMonospacedFontFamily ) {
+		FlatLaf.preferredMonospacedFontFamily = preferredMonospacedFontFamily;
+	}
+
 	//---- class FlatUIDefaults -----------------------------------------------
 
 	private class FlatUIDefaults
@@ -1347,9 +1557,16 @@ public abstract class FlatLaf
 
 			// create font for family
 			if( families != null && !families.isEmpty() ) {
+				String preferredFamily = preferredFamily( families );
+				if( preferredFamily != null ) {
+					Font font = createCompositeFont( preferredFamily, newStyle, newSize );
+					if( !isFallbackFont( font ) || isDialogFamily( preferredFamily ) )
+						return toUIResource( font );
+				}
+
 				for( String family : families ) {
 					Font font = createCompositeFont( family, newStyle, newSize );
-					if( !isFallbackFont( font ) || family.equalsIgnoreCase( Font.DIALOG ) )
+					if( !isFallbackFont( font ) || isDialogFamily( family ) )
 						return toUIResource( font );
 				}
 			}
@@ -1378,9 +1595,26 @@ public abstract class FlatLaf
 				: new FontUIResource( font );
 		}
 
-		private boolean isFallbackFont( Font font ) {
+		private static boolean isFallbackFont( Font font ) {
 			return Font.DIALOG.equalsIgnoreCase( font.getFamily() );
 		}
+
+		private static boolean isDialogFamily( String family ) {
+			return family.equalsIgnoreCase( Font.DIALOG );
+		}
+
+		private static String preferredFamily( List<String> families ) {
+			for( String family : families ) {
+				family = family.toLowerCase( Locale.ENGLISH );
+				if( family.endsWith( " light" ) || family.endsWith( "-thin" ) )
+					return preferredLightFontFamily;
+				if( family.endsWith( " semibold" ) || family.endsWith( "-medium" ) )
+					return preferredSemiboldFontFamily;
+				if( family.equals( "monospaced" ) )
+					return preferredMonospacedFontFamily;
+			}
+			return null;
+		}
 	}
 
 	//---- class ImageIconUIResource ------------------------------------------

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLightLaf.java

@@ -33,6 +33,8 @@ public class FlatLightLaf
 	/**
 	 * Sets the application look and feel to this LaF
 	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 *
+	 * @since 1.2
 	 */
 	public static boolean setup() {
 		return setup( new FlatLightLaf() );

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatSystemProperties.java

@@ -16,6 +16,7 @@
 
 package com.formdev.flatlaf;
 
+import javax.swing.SwingUtilities;
 import com.formdev.flatlaf.util.UIScale;
 
 /**
@@ -140,9 +141,33 @@ public interface FlatSystemProperties
 	String USE_TEXT_Y_CORRECTION = "flatlaf.useTextYCorrection";
 
 	/**
-	 * Specifies a directory in which the native FlatLaf library have been extracted.
+	 * Specifies whether FlatLaf updates the UI when the system font changes.
+	 * If {@code true}, {@link SwingUtilities#updateComponentTreeUI(java.awt.Component)}
+	 * gets invoked for all windows if the system font has changed.
+	 * This is the similar to when switching to another look and feel (theme).
+	 * Applications that do not work correctly when switching look and feel,
+	 * should disable this option to avoid corrupted UI.
+	 * <p>
+	 * <strong>Allowed Values</strong> {@code false} and {@code true}<br>
+	 * <strong>Default</strong> {@code true}
+	 * @since 2.5
+	 */
+	String UPDATE_UI_ON_SYSTEM_FONT_CHANGE = "flatlaf.updateUIOnSystemFontChange";
+
+	/**
+	 * Specifies a directory in which the native FlatLaf libraries have been extracted.
 	 * The path can be absolute or relative to current application working directory.
 	 * This can be used to avoid extraction of the native libraries to the temporary directory at runtime.
+	 * <p>
+	 * If the value is {@code "system"}, then {@link System#loadLibrary(String)} is
+	 * used to load the native library.
+	 * Searches for the native library in classloader of caller
+	 * (using {@link ClassLoader#findLibrary(String)}) and in paths specified
+	 * in system properties {@code sun.boot.library.path} and {@code java.library.path}.
+	 * (supported since FlatLaf 2.6)
+	 * <p>
+	 * If the native library can not loaded from the given path (or via {@link System#loadLibrary(String)}),
+	 * then the embedded native library is extracted to the temporary directory and loaded from there.
 	 *
 	 * @since 2
 	 */

flatlaf-core/src/main/java/com/formdev/flatlaf/IntelliJTheme.java

@@ -37,6 +37,7 @@ import com.formdev.flatlaf.json.ParseException;
 import com.formdev.flatlaf.util.ColorFunctions;
 import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.StringUtils;
+import com.formdev.flatlaf.util.SystemInfo;
 
 /**
  * This class supports loading IntelliJ .theme.json files and using them as a Laf.
@@ -72,6 +73,8 @@ public class IntelliJTheme
 	 *
 	 * The input stream is automatically closed.
 	 * Using a buffered input stream is not necessary.
+	 *
+	 * @since 1.2
 	 */
 	public static boolean setup( InputStream in ) {
 		try {
@@ -162,8 +165,11 @@ public class IntelliJTheme
 		applyCheckBoxColors( defaults );
 
 		// copy values
-		for( Map.Entry<String, String> e : uiKeyCopying.entrySet() )
+		for( Map.Entry<String, String> e : uiKeyCopying.entrySet() ) {
-			defaults.put( e.getKey(), defaults.get( e.getValue() ) );
+			Object value = defaults.get( e.getValue() );
+			if( value != null )
+				defaults.put( e.getKey(), value );
+		}
 
 		// IDEA does not paint button background if disabled, but FlatLaf does
 		Object panelBackground = defaults.get( "Panel.background" );
@@ -296,7 +302,7 @@ public class IntelliJTheme
 
 		for( Map.Entry<String, String> e : colors.entrySet() ) {
 			String value = e.getValue();
-			ColorUIResource color = UIDefaultsLoader.parseColor( value );
+			ColorUIResource color = parseColor( value );
 			if( color != null ) {
 				String key = e.getKey();
 				namedColors.put( key, color );
@@ -311,8 +317,19 @@ public class IntelliJTheme
 	@SuppressWarnings( "unchecked" )
 	private void apply( String key, Object value, UIDefaults defaults, ArrayList<Object> defaultsKeysCache, Set<String> uiKeys ) {
 		if( value instanceof Map ) {
-			for( Map.Entry<String, Object> e : ((Map<String, Object>)value).entrySet() )
+			Map<String, Object> map = (Map<String, Object>)value;
-				apply( key + '.' + e.getKey(), e.getValue(), defaults, defaultsKeysCache, uiKeys );
+			if( map.containsKey( "os.default" ) || map.containsKey( "os.windows" ) || map.containsKey( "os.mac" ) || map.containsKey( "os.linux" ) ) {
+				String osKey = SystemInfo.isWindows ? "os.windows"
+					: SystemInfo.isMacOS ? "os.mac"
+					: SystemInfo.isLinux ? "os.linux" : null;
+				if( osKey != null && map.containsKey( osKey ) )
+					apply( key, map.get( osKey ), defaults, defaultsKeysCache, uiKeys );
+				else if( map.containsKey( "os.default" ) )
+					apply( key, map.get( "os.default" ), defaults, defaultsKeysCache, uiKeys );
+			} else {
+				for( Map.Entry<String, Object> e : map.entrySet() )
+					apply( key + '.' + e.getKey(), e.getValue(), defaults, defaultsKeysCache, uiKeys );
+			}
 		} else {
 			if( "".equals( value ) )
 				return; // ignore empty value
@@ -431,7 +448,15 @@ public class IntelliJTheme
 		ColorUIResource color = namedColors.get( value );
 
 		// parse color
-		return (color != null) ? color : UIDefaultsLoader.parseColor( value );
+		return (color != null) ? color : parseColor( value );
+	}
+
+	private ColorUIResource parseColor( String value ) {
+		try {
+			return UIDefaultsLoader.parseColor( value );
+		} catch( IllegalArgumentException ex ) {
+			return null;
+		}
 	}
 
 	/**
@@ -523,7 +548,7 @@ public class IntelliJTheme
 				// radioFocused.svg and radioSelectedFocused.svg
 				// use opacity=".65" for the border
 				// --> add alpha to focused border colors
-				String[] focusedBorderColorKeys = new String[] {
+				String[] focusedBorderColorKeys = {
 					"CheckBox.icon.focusedBorderColor",
 					"CheckBox.icon.focusedSelectedBorderColor",
 					"CheckBox.icon[filled].focusedBorderColor",
@@ -612,6 +637,11 @@ public class IntelliJTheme
 		uiKeyCopying.put( "Spinner.buttonSeparatorColor",         "Component.borderColor" );
 		uiKeyCopying.put( "Spinner.buttonDisabledSeparatorColor", "Component.disabledBorderColor" );
 
+		// TabbedPane
+		uiKeyCopying.put( "TabbedPane.selectedBackground",     "DefaultTabs.underlinedTabBackground" );
+		uiKeyCopying.put( "TabbedPane.selectedForeground",     "DefaultTabs.underlinedTabForeground" );
+		uiKeyCopying.put( "TabbedPane.inactiveUnderlineColor", "DefaultTabs.inactiveUnderlineColor" );
+
 		// TitlePane
 		uiKeyCopying.put( "TitlePane.inactiveBackground",     "TitlePane.background" );
 		uiKeyMapping.put( "TitlePane.infoForeground",         "TitlePane.foreground" );

flatlaf-core/src/main/java/com/formdev/flatlaf/SubMenuUsabilityHelper.java

@@ -59,6 +59,11 @@ class SubMenuUsabilityHelper
 	private static final String KEY_USE_SAFE_TRIANGLE = "Menu.useSafeTriangle";
 	private static final String KEY_SHOW_SAFE_TRIANGLE = "FlatLaf.debug.menu.showSafeTriangle";
 
+	// Using a static field to ensure that there is only one instance in the system.
+	// Multiple instances would freeze the application.
+	// https://github.com/apache/netbeans/issues/4231#issuecomment-1179616607
+	private static SubMenuUsabilityHelper instance;
+
 	private SubMenuEventQueue subMenuEventQueue;
 	private SafeTrianglePainter safeTrianglePainter;
 	private boolean changePending;
@@ -74,13 +79,22 @@ class SubMenuUsabilityHelper
 
 	private Rectangle invokerBounds;
 
-	void install() {
+	static synchronized boolean install() {
-		MenuSelectionManager.defaultManager().addChangeListener( this );
+		if( instance != null )
+			return false;
+
+		instance = new SubMenuUsabilityHelper();
+		MenuSelectionManager.defaultManager().addChangeListener( instance );
+		return true;
 	}
 
-	void uninstall() {
+	static synchronized void uninstall() {
-		MenuSelectionManager.defaultManager().removeChangeListener( this );
+		if( instance == null )
-		uninstallEventQueue();
+			return;
+
+		MenuSelectionManager.defaultManager().removeChangeListener( instance );
+		instance.uninstallEventQueue();
+		instance = null;
 	}
 
 	@Override
@@ -298,7 +312,7 @@ debug*/
 			if( window instanceof RootPaneContainer ) {
 				JLayeredPane layeredPane = ((RootPaneContainer)window).getLayeredPane();
 				setSize( layeredPane.getSize() );
-				layeredPane.add( this, new Integer( JLayeredPane.POPUP_LAYER + 1 ) );
+				layeredPane.add( this, Integer.valueOf( JLayeredPane.POPUP_LAYER + 1 ) );
 			}
 		}
 

flatlaf-core/src/main/java/com/formdev/flatlaf/UIDefaultsLoader.java

@@ -84,6 +84,7 @@ class UIDefaultsLoader
 
 	private static int parseColorDepth;
 
+	private static Map<String, ColorUIResource> systemColorCache;
 	private static final SoftCache<String, Object> fontCache = new SoftCache<>();
 
 	static void loadDefaultsFromProperties( Class<?> lookAndFeelClass, List<FlatDefaultsAddon> addons,
@@ -105,6 +106,10 @@ class UIDefaultsLoader
 		Properties additionalDefaults, boolean dark, UIDefaults defaults )
 	{
 		try {
+			// temporary cache system colors while loading defaults,
+			// which avoids that system color getter is invoked multiple times
+			systemColorCache = (FlatLaf.getSystemColorGetter() != null) ? new HashMap<>() : null;
+
 			// load core properties files
 			Properties properties = new Properties();
 			for( Class<?> lafClass : lafClasses ) {
@@ -276,6 +281,9 @@ class UIDefaultsLoader
 
 			// remember variables in defaults to allow using them in styles
 			defaults.put( KEY_VARIABLES, variables );
+
+			// clear/disable system color cache
+			systemColorCache = null;
 		} catch( IOException ex ) {
 			LoggingFacade.INSTANCE.logSevere( "FlatLaf: Failed to load properties files.", ex );
 		}
@@ -466,6 +474,10 @@ class UIDefaultsLoader
 				if( knownValueTypes == null ) {
 					// create lazy
 					knownValueTypes = new HashMap<>();
+					// system colors
+					knownValueTypes.put( "activeCaptionBorder", ValueType.COLOR );
+					knownValueTypes.put( "inactiveCaptionBorder", ValueType.COLOR );
+					knownValueTypes.put( "windowBorder", ValueType.COLOR );
 					// SplitPane
 					knownValueTypes.put( "SplitPane.dividerSize", ValueType.INTEGER );
 					knownValueTypes.put( "SplitPaneDivider.gripDotSize", ValueType.INTEGER );
@@ -521,14 +533,14 @@ class UIDefaultsLoader
 			case STRING:		return value;
 			case BOOLEAN:		return parseBoolean( value );
 			case CHARACTER:		return parseCharacter( value );
-			case INTEGER:		return parseInteger( value, true );
+			case INTEGER:		return parseInteger( value );
-			case INTEGERORFLOAT:return parseIntegerOrFloat( value, true );
+			case INTEGERORFLOAT:return parseIntegerOrFloat( value );
-			case FLOAT:			return parseFloat( value, true );
+			case FLOAT:			return parseFloat( value );
 			case BORDER:		return parseBorder( value, resolver, addonClassLoaders );
 			case ICON:			return parseInstance( value, addonClassLoaders );
 			case INSETS:		return parseInsets( value );
 			case DIMENSION:		return parseDimension( value );
-			case COLOR:			return parseColorOrFunction( value, resolver, true );
+			case COLOR:			return parseColorOrFunction( value, resolver );
 			case FONT:			return parseFont( value );
 			case SCALEDINTEGER:	return parseScaledInteger( value );
 			case SCALEDFLOAT:	return parseScaledFloat( value );
@@ -546,24 +558,34 @@ class UIDefaultsLoader
 				}
 
 				// colors
-				Object color = parseColorOrFunction( value, resolver, false );
+				if( value.startsWith( "#" ) || value.endsWith( ")" ) ) {
-				if( color != null ) {
+					Object color = parseColorOrFunction( value, resolver );
-					resultValueType[0] = ValueType.COLOR;
+					resultValueType[0] = (color != null) ? ValueType.COLOR : ValueType.NULL;
 					return color;
 				}
 
-				// integer
+				// integer or float
-				Integer integer = parseInteger( value, false );
+				char firstChar = value.charAt( 0 );
-				if( integer != null ) {
+				if( (firstChar >= '0' && firstChar <= '9') ||
-					resultValueType[0] = ValueType.INTEGER;
+					firstChar == '-' || firstChar == '+' || firstChar == '.' )
-					return integer;
+				{
-				}
+					// integer
+					try {
+						Integer integer = parseInteger( value );
+						resultValueType[0] = ValueType.INTEGER;
+						return integer;
+					} catch( NumberFormatException ex ) {
+						// ignore
+					}
 
-				// float
+					// float
-				Float f = parseFloat( value, false );
+					try {
-				if( f != null ) {
+						Float f = parseFloat( value );
-					resultValueType[0] = ValueType.FLOAT;
+						resultValueType[0] = ValueType.FLOAT;
-					return f;
+						return f;
+					} catch( NumberFormatException ex ) {
+						// ignore
+					}
 				}
 
 				// string
@@ -592,10 +614,10 @@ class UIDefaultsLoader
 			List<String> parts = splitFunctionParams( value, ',' );
 			Insets insets = parseInsets( value );
 			ColorUIResource lineColor = (parts.size() >= 5)
-				? (ColorUIResource) parseColorOrFunction( resolver.apply( parts.get( 4 ) ), resolver, true )
+				? (ColorUIResource) parseColorOrFunction( resolver.apply( parts.get( 4 ) ), resolver )
 				: null;
-			float lineThickness = (parts.size() >= 6 && !parts.get( 5 ).isEmpty()) ? parseFloat( parts.get( 5 ), true ) : 1f;
+			float lineThickness = (parts.size() >= 6 && !parts.get( 5 ).isEmpty()) ? parseFloat( parts.get( 5 ) ) : 1f;
-			int arc = (parts.size() >= 7) ? parseInteger( parts.get( 6 ), true ) : 0;
+			int arc = (parts.size() >= 7) ? parseInteger( parts.get( 6 ) ) : 0;
 
 			return (LazyValue) t -> {
 				return (lineColor != null)
@@ -670,30 +692,24 @@ class UIDefaultsLoader
 		}
 	}
 
-	private static Object parseColorOrFunction( String value, Function<String, String> resolver, boolean reportError ) {
+	private static Object parseColorOrFunction( String value, Function<String, String> resolver ) {
 		if( value.endsWith( ")" ) )
-			return parseColorFunctions( value, resolver, reportError );
+			return parseColorFunctions( value, resolver );
 
-		return parseColor( value, reportError );
+		return parseColor( value );
 	}
 
+	/**
+	 * Parses a hex color in  {@code #RGB}, {@code #RGBA}, {@code #RRGGBB} or {@code #RRGGBBAA}
+	 * format and returns it as color object.
+	 *
+	 * @throws IllegalArgumentException
+	 */
 	static ColorUIResource parseColor( String value ) {
-		return parseColor( value, false );
+		int rgba = parseColorRGBA( value );
-	}
+		return ((rgba & 0xff000000) == 0xff000000)
-
+			? new ColorUIResource( rgba )
-	private static ColorUIResource parseColor( String value, boolean reportError ) {
+			: new ColorUIResource( new Color( rgba, true ) );
-		try {
-			int rgba = parseColorRGBA( value );
-			return ((rgba & 0xff000000) == 0xff000000)
-				? new ColorUIResource( rgba )
-				: new ColorUIResource( new Color( rgba, true ) );
-		} catch( IllegalArgumentException ex ) {
-			if( reportError )
-				throw new IllegalArgumentException( "invalid color '" + value + "'" );
-
-			// not a color --> ignore
-		}
-		return null;
 	}
 
 	/**
@@ -706,7 +722,7 @@ class UIDefaultsLoader
 	static int parseColorRGBA( String value ) {
 		int len = value.length();
 		if( (len != 4 && len != 5 && len != 7 && len != 9) || value.charAt( 0 ) != '#' )
-			throw new IllegalArgumentException();
+			throw newInvalidColorException( value );
 
 		// parse hex
 		int n = 0;
@@ -721,7 +737,7 @@ class UIDefaultsLoader
 			else if( ch >= 'A' && ch <= 'F' )
 				digit = ch - 'A' + 10;
 			else
-				throw new IllegalArgumentException();
+				throw newInvalidColorException( value );
 
 			n = (n << 4) | digit;
 		}
@@ -740,13 +756,14 @@ class UIDefaultsLoader
 			: (((n >> 8) & 0xffffff) | ((n & 0xff) << 24)); // move alpha from lowest to highest byte
 	}
 
-	private static Object parseColorFunctions( String value, Function<String, String> resolver, boolean reportError ) {
+	private static IllegalArgumentException newInvalidColorException( String value ) {
+		return new IllegalArgumentException( "invalid color '" + value + "'" );
+	}
+
+	private static Object parseColorFunctions( String value, Function<String, String> resolver ) {
 		int paramsStart = value.indexOf( '(' );
-		if( paramsStart < 0 ) {
+		if( paramsStart < 0 )
-			if( reportError )
+			throw new IllegalArgumentException( "missing opening parenthesis in function '" + value + "'" );
-				throw new IllegalArgumentException( "missing opening parenthesis in function '" + value + "'" );
-			return null;
-		}
 
 		String function = StringUtils.substringTrimmed( value, 0, paramsStart );
 		List<String> params = splitFunctionParams( value.substring( paramsStart + 1, value.length() - 1 ), ',' );
@@ -759,27 +776,29 @@ class UIDefaultsLoader
 		parseColorDepth++;
 		try {
 			switch( function ) {
-				case "if":			return parseColorIf( value, params, resolver, reportError );
+				case "if":			return parseColorIf( value, params, resolver );
-				case "rgb":			return parseColorRgbOrRgba( false, params, resolver, reportError );
+				case "systemColor":	return parseColorSystemColor( value, params, resolver );
-				case "rgba":		return parseColorRgbOrRgba( true, params, resolver, reportError );
+				case "rgb":			return parseColorRgbOrRgba( false, params, resolver );
+				case "rgba":		return parseColorRgbOrRgba( true, params, resolver );
 				case "hsl":			return parseColorHslOrHsla( false, params );
 				case "hsla":		return parseColorHslOrHsla( true, params );
-				case "lighten":		return parseColorHSLIncreaseDecrease( 2, true, params, resolver, reportError );
+				case "lighten":		return parseColorHSLIncreaseDecrease( 2, true, params, resolver );
-				case "darken":		return parseColorHSLIncreaseDecrease( 2, false, params, resolver, reportError );
+				case "darken":		return parseColorHSLIncreaseDecrease( 2, false, params, resolver );
-				case "saturate":	return parseColorHSLIncreaseDecrease( 1, true, params, resolver, reportError );
+				case "saturate":	return parseColorHSLIncreaseDecrease( 1, true, params, resolver );
-				case "desaturate":	return parseColorHSLIncreaseDecrease( 1, false, params, resolver, reportError );
+				case "desaturate":	return parseColorHSLIncreaseDecrease( 1, false, params, resolver );
-				case "fadein":		return parseColorHSLIncreaseDecrease( 3, true, params, resolver, reportError );
+				case "fadein":		return parseColorHSLIncreaseDecrease( 3, true, params, resolver );
-				case "fadeout":		return parseColorHSLIncreaseDecrease( 3, false, params, resolver, reportError );
+				case "fadeout":		return parseColorHSLIncreaseDecrease( 3, false, params, resolver );
-				case "fade":		return parseColorFade( params, resolver, reportError );
+				case "fade":		return parseColorFade( params, resolver );
-				case "spin":		return parseColorSpin( params, resolver, reportError );
+				case "spin":		return parseColorSpin( params, resolver );
-				case "changeHue":		return parseColorChange( 0, params, resolver, reportError );
+				case "changeHue":		return parseColorChange( 0, params, resolver );
-				case "changeSaturation":return parseColorChange( 1, params, resolver, reportError );
+				case "changeSaturation":return parseColorChange( 1, params, resolver );
-				case "changeLightness":	return parseColorChange( 2, params, resolver, reportError );
+				case "changeLightness":	return parseColorChange( 2, params, resolver );
-				case "changeAlpha":		return parseColorChange( 3, params, resolver, reportError );
+				case "changeAlpha":		return parseColorChange( 3, params, resolver );
-				case "mix":				return parseColorMix( null, params, resolver, reportError );
+				case "mix":				return parseColorMix( null, params, resolver );
-				case "tint":			return parseColorMix( "#fff", params, resolver, reportError );
+				case "tint":			return parseColorMix( "#fff", params, resolver );
-				case "shade":			return parseColorMix( "#000", params, resolver, reportError );
+				case "shade":			return parseColorMix( "#000", params, resolver );
-				case "contrast":		return parseColorContrast( params, resolver, reportError );
+				case "contrast":		return parseColorContrast( params, resolver );
+				case "over":			return parseColorOver( params, resolver );
 			}
 		} finally {
 			parseColorDepth--;
@@ -794,13 +813,51 @@ class UIDefaultsLoader
 	 * This "if" function is only used if the "if" is passed as parameter to another
 	 * color function. Otherwise, the general "if" function is used.
 	 */
-	private static Object parseColorIf( String value, List<String> params, Function<String, String> resolver, boolean reportError ) {
+	private static Object parseColorIf( String value, List<String> params, Function<String, String> resolver ) {
 		if( params.size() != 3 )
 			throwMissingParametersException( value );
 
 		boolean ifCondition = parseCondition( params.get( 0 ), resolver, Collections.emptyList() );
 		String ifValue = params.get( ifCondition ? 1 : 2 );
-		return parseColorOrFunction( resolver.apply( ifValue ), resolver, reportError );
+		return parseColorOrFunction( resolver.apply( ifValue ), resolver );
+	}
+
+	/**
+	 * Syntax: systemColor(name[,defaultValue])
+	 *   - name: system color name
+	 *   - defaultValue: default color value used if system color is not available
+	 */
+	private static Object parseColorSystemColor( String value, List<String> params, Function<String, String> resolver ) {
+		if( params.size() < 1 )
+			throwMissingParametersException( value );
+
+		ColorUIResource systemColor = getSystemColor( params.get( 0 ) );
+		if( systemColor != null )
+			return systemColor;
+
+		String defaultValue = (params.size() > 1) ? params.get( 1 ) : "";
+		if( defaultValue.equals( "null" ) || defaultValue.isEmpty() )
+			return null;
+
+		return parseColorOrFunction( resolver.apply( defaultValue ), resolver );
+	}
+
+	private static ColorUIResource getSystemColor( String name ) {
+		Function<String, Color> systemColorGetter = FlatLaf.getSystemColorGetter();
+		if( systemColorGetter == null )
+			return null;
+
+		// use containsKey() because value may be null
+		if( systemColorCache != null && systemColorCache.containsKey( name ) )
+			return systemColorCache.get( name );
+
+		Color color = systemColorGetter.apply( name );
+		ColorUIResource uiColor = (color != null) ? new ColorUIResource( color ) : null;
+
+		if( systemColorCache != null )
+			systemColorCache.put( name, uiColor );
+
+		return uiColor;
 	}
 
 	/**
@@ -811,7 +868,7 @@ class UIDefaultsLoader
 	 *   - alpha: an integer 0-255 or a percentage 0-100%
 	 */
 	private static ColorUIResource parseColorRgbOrRgba( boolean hasAlpha, List<String> params,
-		Function<String, String> resolver, boolean reportError )
+		Function<String, String> resolver )
 	{
 		if( hasAlpha && params.size() == 2 ) {
 			// syntax rgba(color,alpha), which allows adding alpha to any color
@@ -820,7 +877,7 @@ class UIDefaultsLoader
 			String colorStr = params.get( 0 );
 			int alpha = parseInteger( params.get( 1 ), 0, 255, true );
 
-			ColorUIResource color = (ColorUIResource) parseColorOrFunction( resolver.apply( colorStr ), resolver, reportError );
+			ColorUIResource color = (ColorUIResource) parseColorOrFunction( resolver.apply( colorStr ), resolver );
 			return new ColorUIResource( new Color( ((alpha & 0xff) << 24) | (color.getRGB() & 0xffffff), true ) );
 		}
 
@@ -847,7 +904,7 @@ class UIDefaultsLoader
 		int lightness = parsePercentage( params.get( 2 ) );
 		int alpha = hasAlpha ? parsePercentage( params.get( 3 ) ) : 100;
 
-		float[] hsl = new float[] { hue, saturation, lightness };
+		float[] hsl = { hue, saturation, lightness };
 		return new ColorUIResource( HSLColor.toRGB( hsl, alpha / 100f ) );
 	}
 
@@ -860,7 +917,7 @@ class UIDefaultsLoader
 	 *   - options: [relative] [autoInverse] [noAutoInverse] [lazy] [derived]
 	 */
 	private static Object parseColorHSLIncreaseDecrease( int hslIndex, boolean increase,
-		List<String> params, Function<String, String> resolver, boolean reportError )
+		List<String> params, Function<String, String> resolver )
 	{
 		String colorStr = params.get( 0 );
 		int amount = parsePercentage( params.get( 1 ) );
@@ -895,7 +952,7 @@ class UIDefaultsLoader
 		}
 
 		// parse base color, apply function and create derived color
-		return parseFunctionBaseColor( colorStr, function, derived, resolver, reportError );
+		return parseFunctionBaseColor( colorStr, function, derived, resolver );
 	}
 
 	/**
@@ -904,7 +961,7 @@ class UIDefaultsLoader
 	 *   - amount: percentage 0-100%
 	 *   - options: [derived] [lazy]
 	 */
-	private static Object parseColorFade( List<String> params, Function<String, String> resolver, boolean reportError ) {
+	private static Object parseColorFade( List<String> params, Function<String, String> resolver ) {
 		String colorStr = params.get( 0 );
 		int amount = parsePercentage( params.get( 1 ) );
 		boolean derived = false;
@@ -929,7 +986,7 @@ class UIDefaultsLoader
 		}
 
 		// parse base color, apply function and create derived color
-		return parseFunctionBaseColor( colorStr, function, derived, resolver, reportError );
+		return parseFunctionBaseColor( colorStr, function, derived, resolver );
 	}
 
 	/**
@@ -938,9 +995,9 @@ class UIDefaultsLoader
 	 *   - angle: number of degrees to rotate
 	 *   - options: [derived]
 	 */
-	private static Object parseColorSpin( List<String> params, Function<String, String> resolver, boolean reportError ) {
+	private static Object parseColorSpin( List<String> params, Function<String, String> resolver ) {
 		String colorStr = params.get( 0 );
-		int amount = parseInteger( params.get( 1 ), true );
+		int amount = parseInteger( params.get( 1 ) );
 		boolean derived = false;
 
 		if( params.size() > 2 ) {
@@ -952,7 +1009,7 @@ class UIDefaultsLoader
 		ColorFunction function = new ColorFunctions.HSLIncreaseDecrease( 0, true, amount, false, false );
 
 		// parse base color, apply function and create derived color
-		return parseFunctionBaseColor( colorStr, function, derived, resolver, reportError );
+		return parseFunctionBaseColor( colorStr, function, derived, resolver );
 	}
 
 	/**
@@ -965,11 +1022,11 @@ class UIDefaultsLoader
 	 *   - options: [derived]
 	 */
 	private static Object parseColorChange( int hslIndex,
-		List<String> params, Function<String, String> resolver, boolean reportError )
+		List<String> params, Function<String, String> resolver )
 	{
 		String colorStr = params.get( 0 );
 		int value = (hslIndex == 0)
-			? parseInteger( params.get( 1 ), true )
+			? parseInteger( params.get( 1 ) )
 			: parsePercentage( params.get( 1 ) );
 		boolean derived = false;
 
@@ -982,7 +1039,7 @@ class UIDefaultsLoader
 		ColorFunction function = new ColorFunctions.HSLChange( hslIndex, value );
 
 		// parse base color, apply function and create derived color
-		return parseFunctionBaseColor( colorStr, function, derived, resolver, reportError );
+		return parseFunctionBaseColor( colorStr, function, derived, resolver );
 	}
 
 	/**
@@ -994,7 +1051,7 @@ class UIDefaultsLoader
 	 *   - weight: the weight (in range 0-100%) to mix the two colors
 	 *             larger weight uses more of first color, smaller weight more of second color
 	 */
-	private static Object parseColorMix( String color1Str, List<String> params, Function<String, String> resolver, boolean reportError ) {
+	private static Object parseColorMix( String color1Str, List<String> params, Function<String, String> resolver ) {
 		int i = 0;
 		if( color1Str == null )
 			color1Str = params.get( i++ );
@@ -1002,7 +1059,7 @@ class UIDefaultsLoader
 		int weight = (params.size() > i) ? parsePercentage( params.get( i ) ) : 50;
 
 		// parse second color
-		ColorUIResource color2 = (ColorUIResource) parseColorOrFunction( resolver.apply( color2Str ), resolver, reportError );
+		ColorUIResource color2 = (ColorUIResource) parseColorOrFunction( resolver.apply( color2Str ), resolver );
 		if( color2 == null )
 			return null;
 
@@ -1010,7 +1067,7 @@ class UIDefaultsLoader
 		ColorFunction function = new ColorFunctions.Mix( color2, weight );
 
 		// parse first color, apply function and create mixed color
-		return parseFunctionBaseColor( color1Str, function, false, resolver, reportError );
+		return parseFunctionBaseColor( color1Str, function, false, resolver );
 	}
 
 	/**
@@ -1021,14 +1078,14 @@ class UIDefaultsLoader
 	 *   - threshold: the threshold (in range 0-100%) to specify where the transition
 	 *                from "dark" to "light" is (default is 43%)
 	 */
-	private static Object parseColorContrast( List<String> params, Function<String, String> resolver, boolean reportError ) {
+	private static Object parseColorContrast( List<String> params, Function<String, String> resolver ) {
 		String colorStr = params.get( 0 );
 		String darkStr = params.get( 1 );
 		String lightStr = params.get( 2 );
 		int threshold = (params.size() > 3) ? parsePercentage( params.get( 3 ) ) : 43;
 
 		// parse color to compare against
-		ColorUIResource color = (ColorUIResource) parseColorOrFunction( resolver.apply( colorStr ), resolver, reportError );
+		ColorUIResource color = (ColorUIResource) parseColorOrFunction( resolver.apply( colorStr ), resolver );
 		if( color == null )
 			return null;
 
@@ -1038,15 +1095,43 @@ class UIDefaultsLoader
 			: darkStr;
 
 		// parse dark or light color
-		return parseColorOrFunction( resolver.apply( darkOrLightColor ), resolver, reportError );
+		return parseColorOrFunction( resolver.apply( darkOrLightColor ), resolver );
+	}
+
+	/**
+	 * Syntax: over(foreground,background)
+	 *   - foreground: a foreground color (e.g. #f00) or a color function;
+	 *                 the alpha of this color is used as weight to mix the two colors
+	 *   - background: a background color (e.g. #f00) or a color function
+	 */
+	private static ColorUIResource parseColorOver( List<String> params, Function<String, String> resolver ) {
+		String foregroundStr = params.get( 0 );
+		String backgroundStr = params.get( 1 );
+
+		// parse foreground color
+		ColorUIResource foreground = (ColorUIResource) parseColorOrFunction( resolver.apply( foregroundStr ), resolver );
+		if( foreground == null || foreground.getAlpha() == 255 )
+			return foreground;
+
+		// foreground color without alpha
+		ColorUIResource foreground2 = new ColorUIResource( foreground.getRGB() );
+
+		// parse background color
+		ColorUIResource background = (ColorUIResource) parseColorOrFunction( resolver.apply( backgroundStr ), resolver );
+		if( background == null )
+			return foreground2;
+
+		// create new color
+		float weight = foreground.getAlpha() / 255f;
+		return new ColorUIResource( ColorFunctions.mix( foreground2, background, weight ) );
 	}
 
 	private static Object parseFunctionBaseColor( String colorStr, ColorFunction function,
-		boolean derived, Function<String, String> resolver, boolean reportError )
+		boolean derived, Function<String, String> resolver )
 	{
 		// parse base color
 		String resolvedColorStr = resolver.apply( colorStr );
-		ColorUIResource baseColor = (ColorUIResource) parseColorOrFunction( resolvedColorStr, resolver, reportError );
+		ColorUIResource baseColor = (ColorUIResource) parseColorOrFunction( resolvedColorStr, resolver );
 		if( baseColor == null )
 			return null;
 
@@ -1130,11 +1215,11 @@ class UIDefaultsLoader
 								throw new IllegalArgumentException( "size specified more than once in '" + value + "'" );
 
 							if( firstChar == '+' || firstChar == '-' )
-								relativeSize = parseInteger( param, true );
+								relativeSize = parseInteger( param );
 							else if( param.endsWith( "%" ) )
-								scaleSize = parseInteger( param.substring( 0, param.length() - 1 ), true ) / 100f;
+								scaleSize = parseInteger( param.substring( 0, param.length() - 1 ) ) / 100f;
 							else
-								absoluteSize = parseInteger( param, true );
+								absoluteSize = parseInteger( param );
 						} else if( firstChar == '$' ) {
 							// reference to base font
 							if( baseFontKey != null )
@@ -1208,55 +1293,49 @@ class UIDefaultsLoader
 			return (max * percent) / 100;
 		}
 
-		Integer integer = parseInteger( value, true );
+		Integer integer = parseInteger( value );
 		if( integer < min || integer > max )
 			throw new NumberFormatException( "integer '" + value + "' out of range (" + min + '-' + max + ')' );
 		return integer;
 	}
 
-	private static Integer parseInteger( String value, boolean reportError ) {
+	private static Integer parseInteger( String value ) {
 		try {
 			return Integer.parseInt( value );
 		} catch( NumberFormatException ex ) {
-			if( reportError )
+			throw new NumberFormatException( "invalid integer '" + value + "'" );
-				throw new NumberFormatException( "invalid integer '" + value + "'" );
 		}
-		return null;
 	}
 
-	private static Number parseIntegerOrFloat( String value, boolean reportError ) {
+	private static Number parseIntegerOrFloat( String value ) {
 		try {
 			return Integer.parseInt( value );
 		} catch( NumberFormatException ex ) {
 			try {
 				return Float.parseFloat( value );
 			} catch( NumberFormatException ex2 ) {
-				if( reportError )
+				throw new NumberFormatException( "invalid integer or float '" + value + "'" );
-					throw new NumberFormatException( "invalid integer or float '" + value + "'" );
 			}
 		}
-		return null;
 	}
 
-	private static Float parseFloat( String value, boolean reportError ) {
+	private static Float parseFloat( String value ) {
 		try {
 			return Float.parseFloat( value );
 		} catch( NumberFormatException ex ) {
-			if( reportError )
+			throw new NumberFormatException( "invalid float '" + value + "'" );
-				throw new NumberFormatException( "invalid float '" + value + "'" );
 		}
-		return null;
 	}
 
 	private static ActiveValue parseScaledInteger( String value ) {
-		int val = parseInteger( value, true );
+		int val = parseInteger( value );
 		return t -> {
 			return UIScale.scale( val );
 		};
 	}
 
 	private static ActiveValue parseScaledFloat( String value ) {
-		float val = parseFloat( value, true );
+		float val = parseFloat( value );
 		return t -> {
 			return UIScale.scale( val );
 		};
@@ -1311,7 +1390,11 @@ class UIDefaultsLoader
 				start = i + 1;
 			}
 		}
-		strs.add( StringUtils.substringTrimmed( str, start ) );
+
+		// last param
+		String s = StringUtils.substringTrimmed( str, start );
+		if( !s.isEmpty() || !strs.isEmpty() )
+			strs.add( s );
 
 		return strs;
 	}

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatCapsLockIcon.java

@@ -16,9 +16,12 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.Area;
 import java.awt.geom.Path2D;
 import java.awt.geom.Rectangle2D;
 import java.awt.geom.RoundRectangle2D;
@@ -36,6 +39,8 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatCapsLockIcon
 	extends FlatAbstractIcon
 {
+	private Path2D path;
+
 	public FlatCapsLockIcon() {
 		super( 16, 16, UIManager.getColor( "PasswordField.capsLockIconColor" ) );
 	}
@@ -49,22 +54,36 @@ public class FlatCapsLockIcon
 		}
 	}
 
+	/** @since 2.5 */
+	public Object getStyleableValue( String key ) {
+		switch( key ) {
+			case "capsLockIconColor": return color;
+			default: return null;
+		}
+	}
+
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
 			  <g fill="none" fill-rule="evenodd">
 			    <rect width="16" height="16" fill="#6E6E6E" rx="3"/>
-			    <rect width="6" height="2" x="5" y="11.5" fill="#FFF"/>
+			    <rect width="5" height="2" x="5.5" y="11.5" stroke="#FFF" stroke-linejoin="round"/>
-    			<path fill="#FFF" d="M2,8 L8,2 L14,8 L11,8 L11,10 L5,10 L5,8 L2,8 Z"/>
+			    <path stroke="#FFF" stroke-linejoin="round" d="M2.5,7.5 L8,2 L13.5,7.5 L10.5,7.5 L10.5,9.5 L5.5,9.5 L5.5,7.5 L2.5,7.5 Z"/>
 			  </g>
 			</svg>
 		*/
 
-		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
-		path.append( new RoundRectangle2D.Float( 0, 0, 16, 16, 6, 6 ), false );
+		BasicStroke stroke = new BasicStroke( 1, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_ROUND );
-		path.append( new Rectangle2D.Float( 5, 11.5f, 6, 2 ), false );
+
-		path.append( FlatUIUtils.createPath( 2,8, 8,2, 14,8, 11,8, 11,10, 5,10, 5,8 ), false );
+		if( path == null ) {
+			path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+			path.append( new RoundRectangle2D.Float( 0, 0, 16, 16, 6, 6 ), false );
+			path.append( new Area( stroke.createStrokedShape( new Rectangle2D.Float( 5.5f, 11.5f, 5, 2 ) ) ), false );
+			path.append( new Area( stroke.createStrokedShape( FlatUIUtils.createPath(
+				2.5,7.5, 8,2, 13.5,7.5, 10.5,7.5, 10.5,9.5, 5.5,9.5, 5.5,7.5, 2.5,7.5 ) ) ), false );
+		}
 		g.fill( path );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatCheckBoxIcon.java

@@ -172,6 +172,11 @@ public class FlatCheckBoxIcon
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	public Object getStyleableValue( String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
 		boolean indeterminate = isIndeterminate( c );
@@ -237,7 +242,7 @@ public class FlatCheckBoxIcon
 	}
 
 	protected void paintCheckmark( Component c, Graphics2D g ) {
-		Path2D.Float path = new Path2D.Float();
+		Path2D.Float path = new Path2D.Float( Path2D.WIND_NON_ZERO, 3 );
 		path.moveTo( 4.5f, 7.5f );
 		path.lineTo( 6.6f, 10f );
 		path.lineTo( 11.25f, 3.5f );

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatCheckBoxMenuItemIcon.java

@@ -59,6 +59,11 @@ public class FlatCheckBoxMenuItemIcon
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	public Object getStyleableValue( String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	protected void paintIcon( Component c, Graphics2D g2 ) {
 		boolean selected = (c instanceof AbstractButton) && ((AbstractButton)c).isSelected();
@@ -71,7 +76,7 @@ public class FlatCheckBoxMenuItemIcon
 	}
 
 	protected void paintCheckmark( Graphics2D g2 ) {
-		Path2D.Float path = new Path2D.Float();
+		Path2D.Float path = new Path2D.Float( Path2D.WIND_NON_ZERO, 3 );
 		path.moveTo( 4.5f, 7.5f );
 		path.lineTo( 6.6f, 10f );
 		path.lineTo( 11.25f, 3.5f );

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatClearIcon.java

@@ -20,7 +20,6 @@ import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics2D;
 import java.awt.geom.Ellipse2D;
-import java.awt.geom.Line2D;
 import java.awt.geom.Path2D;
 import java.util.Map;
 import javax.swing.AbstractButton;
@@ -69,6 +68,11 @@ public class FlatClearIcon
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	public Object getStyleableValue( String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
 		if( !ignoreButtonState && c instanceof AbstractButton ) {
@@ -98,9 +102,11 @@ public class FlatClearIcon
 
 		// paint cross
 		g.setColor( clearIconColor );
-		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD, 4 );
-		path.append( new Line2D.Float( 5,5, 11,11 ), false );
+		path.moveTo( 5, 5 );
-		path.append( new Line2D.Float( 5,11, 11,5 ), false );
+		path.lineTo( 11, 11 );
+		path.moveTo( 5, 11 );
+		path.lineTo( 11, 5 );
 		g.draw( path );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatFileChooserDetailsViewIcon.java

@@ -39,21 +39,25 @@ public class FlatFileChooserDetailsViewIcon
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
 			  <g fill="none" fill-rule="evenodd">
-			    <rect width="2" height="2" x="2" y="3" fill="#6E6E6E"/>
+			    <rect width="2" height="1" x="2" y="3" fill="#6E6E6E" rx=".5"/>
-			    <rect width="2" height="2" x="2" y="7" fill="#6E6E6E"/>
+			    <rect width="2" height="1" x="2" y="6" fill="#6E6E6E" rx=".5"/>
-			    <rect width="2" height="2" x="2" y="11" fill="#6E6E6E"/>
+			    <rect width="2" height="1" x="2" y="9" fill="#6E6E6E" rx=".5"/>
-			    <rect width="8" height="2" x="6" y="3" fill="#6E6E6E"/>
+			    <rect width="2" height="1" x="2" y="12" fill="#6E6E6E" rx=".5"/>
-			    <rect width="8" height="2" x="6" y="7" fill="#6E6E6E"/>
+			    <rect width="8" height="1" x="6" y="3" fill="#6E6E6E" rx=".5"/>
-			    <rect width="8" height="2" x="6" y="11" fill="#6E6E6E"/>
+			    <rect width="8" height="1" x="6" y="6" fill="#6E6E6E" rx=".5"/>
+			    <rect width="8" height="1" x="6" y="9" fill="#6E6E6E" rx=".5"/>
+			    <rect width="8" height="1" x="6" y="12" fill="#6E6E6E" rx=".5"/>
 			  </g>
 			</svg>
 		*/
 
-		g.fillRect( 2, 3, 2, 2 );
+		g.fillRoundRect( 2, 3, 2, 1, 1, 1 );
-		g.fillRect( 2, 7, 2, 2 );
+		g.fillRoundRect( 2, 6, 2, 1, 1, 1 );
-		g.fillRect( 2, 11, 2, 2 );
+		g.fillRoundRect( 2, 9, 2, 1, 1, 1 );
-		g.fillRect( 6, 3, 8, 2 );
+		g.fillRoundRect( 2, 12, 2, 1, 1, 1 );
-		g.fillRect( 6, 7, 8, 2 );
+		g.fillRoundRect( 6, 3, 8, 1, 1, 1 );
-		g.fillRect( 6, 11, 8, 2 );
+		g.fillRoundRect( 6, 6, 8, 1, 1, 1 );
+		g.fillRoundRect( 6, 9, 8, 1, 1, 1 );
+		g.fillRoundRect( 6, 12, 8, 1, 1, 1 );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatFileChooserHomeFolderIcon.java

@@ -16,8 +16,10 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.RenderingHints;
 import javax.swing.UIManager;
 import com.formdev.flatlaf.ui.FlatUIUtils;
 
@@ -39,10 +41,22 @@ public class FlatFileChooserHomeFolderIcon
 	protected void paintIcon( Component c, Graphics2D g ) {
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
-			  <polygon fill="#6E6E6E" fill-rule="evenodd" points="2 8 8 2 14 8 12 8 12 13 9 13 9 10 7 10 7 13 4 13 4 8"/>
+			  <g fill="none" fill-rule="evenodd">
+			    <polyline stroke="#6E6E6E" stroke-linejoin="round" points="6.5 13 6.5 9.5 9.5 9.5 9.5 13"/>
+			    <path stroke="#6E6E6E" d="M3.5,6.5 L3.5,12.5 C3.5,13.0522847 3.94771525,13.5 4.5,13.5 L11.5,13.5 C12.0522847,13.5 12.5,13.0522847 12.5,12.5 L12.5,6.5 L12.5,6.5"/>
+			    <polyline stroke="#6E6E6E" stroke-linecap="round" stroke-linejoin="round" points="1.5 8.5 8 2 14.5 8.5"/>
+			  </g>
 			</svg>
 		*/
 
-		g.fill( FlatUIUtils.createPath( 2,8, 8,2, 14,8, 12,8, 12,13, 9,13, 9,10, 7,10, 7,13, 4,13, 4,8 ) );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
+		g.setStroke( new BasicStroke( 1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
+
+		g.draw( FlatUIUtils.createPath( false, 6.5,13, 6.5,9.5, 9.5,9.5, 9.5,13 ) );
+		g.draw( FlatUIUtils.createPath( false, 3.5,6.5,
+			3.5,12.5,  FlatUIUtils.QUAD_TO, 3.5,13.5,  4.5,13.5,
+			11.5,13.5, FlatUIUtils.QUAD_TO, 12.5,13.5, 12.5,12.5,
+			12.5,6.5 ) );
+		g.draw( FlatUIUtils.createPath( false, 1.5,8.5, 8,2, 14.5,8.5 ) );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatFileChooserListViewIcon.java

@@ -16,8 +16,11 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.RoundRectangle2D;
 import javax.swing.UIManager;
 
 /**
@@ -39,17 +42,20 @@ public class FlatFileChooserListViewIcon
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
 			  <g fill="none" fill-rule="evenodd">
-			    <rect width="4" height="4" x="3" y="3" fill="#6E6E6E"/>
+			    <rect width="4" height="4" x="2.5" y="2.5" stroke="#6E6E6E" rx="1.5"/>
-			    <rect width="4" height="4" x="3" y="9" fill="#6E6E6E"/>
+			    <rect width="4" height="4" x="2.5" y="9.5" stroke="#6E6E6E" rx="1.5"/>
-			    <rect width="4" height="4" x="9" y="9" fill="#6E6E6E"/>
+			    <rect width="4" height="4" x="9.5" y="9.5" stroke="#6E6E6E" rx="1.5"/>
-			    <rect width="4" height="4" x="9" y="3" fill="#6E6E6E"/>
+			    <rect width="4" height="4" x="9.5" y="2.5" stroke="#6E6E6E" rx="1.5"/>
 			  </g>
 			</svg>
 		*/
 
-		g.fillRect( 3, 3, 4, 4 );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
-		g.fillRect( 3, 9, 4, 4 );
+		g.setStroke( new BasicStroke( 1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
-		g.fillRect( 9, 9, 4, 4 );
+
-		g.fillRect( 9, 3, 4, 4 );
+		g.draw( new RoundRectangle2D.Float( 2.5f, 2.5f, 4, 4, 2, 2 ) );
+		g.draw( new RoundRectangle2D.Float( 2.5f, 9.5f, 4, 4, 2, 2 ) );
+		g.draw( new RoundRectangle2D.Float( 9.5f, 9.5f, 4, 4, 2, 2 ) );
+		g.draw( new RoundRectangle2D.Float( 9.5f, 2.5f, 4, 4, 2, 2 ) );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatFileChooserNewFolderIcon.java

@@ -16,10 +16,13 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
+import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.Line2D;
 import javax.swing.UIManager;
-import com.formdev.flatlaf.ui.FlatUIUtils;
 
 /**
  * "new folder" icon for {@link javax.swing.JFileChooser}.
@@ -31,6 +34,8 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatFileChooserNewFolderIcon
 	extends FlatAbstractIcon
 {
+	private final Color greenColor = UIManager.getColor( "Actions.Green" );
+
 	public FlatFileChooserNewFolderIcon() {
 		super( 16, 16, UIManager.getColor( "Actions.Grey" ) );
 	}
@@ -40,13 +45,20 @@ public class FlatFileChooserNewFolderIcon
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
 			  <g fill="none" fill-rule="evenodd">
-			    <polygon fill="#6E6E6E" points="2 3 5.5 3 7 5 14 5 14 8 11 8 11 10 9 10 9 13 2 13"/>
+			    <path stroke="#6E6E6E" d="M13,13.5 L3,13.5 C2.17157288,13.5 1.5,12.8284271 1.5,12 L1.5,4 C1.5,3.17157288 2.17157288,2.5 3,2.5 L6.29289322,2.5 C6.42550146,2.5 6.55267842,2.55267842 6.64644661,2.64644661 L8.5,4.5 L8.5,4.5 L13,4.5 C13.8284271,4.5 14.5,5.17157288 14.5,6 L14.5,12 C14.5,12.8284271 13.8284271,13.5 13,13.5 Z"/>
-			    <path fill="#59A869" d="M14,11 L16,11 L16,13 L14,13 L14,15 L12,15 L12,13 L10,13 L10,11 L12,11 L12,9 L14,9 L14,11 Z"/>
+			    <line x1="5.5" x2="10.5" y1="9" y2="9" stroke="#59A869" stroke-linecap="round"/>
+			    <line x1="8" x2="8" y1="6.5" y2="11.5" stroke="#59A869" stroke-linecap="round"/>
 			  </g>
 			</svg>
 		*/
 
-		g.fill( FlatUIUtils.createPath( 2,3, 5.5,3, 7,5, 14,5, 14,8, 11,8, 11,10, 9,10, 9,13, 2,13 ) );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
-		g.fill( FlatUIUtils.createPath( 14,11, 16,11, 16,13, 14,13, 14,15, 12,15, 12,13, 10,13, 10,11, 12,11, 12,9, 14,9, 14,11 ) );
+		g.setStroke( new BasicStroke( 1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
+
+		g.draw( FlatFileViewDirectoryIcon.createFolderPath() );
+
+		g.setColor( greenColor );
+		g.draw( new Line2D.Float( 5.5f, 9, 10.5f, 9 ) );
+		g.draw( new Line2D.Float( 8, 6.5f, 8, 11.5f ) );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatFileChooserUpFolderIcon.java

@@ -16,9 +16,12 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.Line2D;
 import javax.swing.UIManager;
 import com.formdev.flatlaf.ui.FlatUIUtils;
 
@@ -44,15 +47,20 @@ public class FlatFileChooserUpFolderIcon
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
 			  <g fill="none" fill-rule="evenodd">
-			    <polygon fill="#6E6E6E" points="2 3 5.5 3 7 5 9 5 9 9 13 9 13 5 14 5 14 13 2 13"/>
+			    <path stroke="#6E6E6E" d="M13,13.5 L3,13.5 C2.17157288,13.5 1.5,12.8284271 1.5,12 L1.5,4 C1.5,3.17157288 2.17157288,2.5 3,2.5 L6.29289322,2.5 C6.42550146,2.5 6.55267842,2.55267842 6.64644661,2.64644661 L8.5,4.5 L8.5,4.5 L13,4.5 C13.8284271,4.5 14.5,5.17157288 14.5,6 L14.5,12 C14.5,12.8284271 13.8284271,13.5 13,13.5 Z"/>
-			    <path fill="#389FD6" d="M12,4 L12,8 L10,8 L10,4 L8,4 L11,1 L14,4 L12,4 Z"/>
+			    <line x1="8" x2="8" y1="6.5" y2="11.5" stroke="#389FD6" stroke-linecap="round"/>
+			    <polyline stroke="#389FD6" stroke-linecap="round" stroke-linejoin="round" points="5.5 9 8 6.5 10.5 9"/>
 			  </g>
 			</svg>
 		*/
 
-		g.fill( FlatUIUtils.createPath( 2,3, 5.5,3, 7,5, 9,5, 9,9, 13,9, 13,5, 14,5, 14,13, 2,13 ) );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
+		g.setStroke( new BasicStroke( 1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
+
+		g.draw( FlatFileViewDirectoryIcon.createFolderPath() );
 
 		g.setColor( blueColor );
-		g.fill( FlatUIUtils.createPath( 12,4, 12,8, 10,8, 10,4, 8,4, 11,1, 14,4, 12,4 ) );
+		g.draw( new Line2D.Float( 8, 6.5f, 8, 11.5f ) );
+		g.draw( FlatUIUtils.createPath( false, 5.5,9, 8,6.5, 10.5,9 ) );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatFileViewComputerIcon.java

@@ -16,10 +16,12 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Component;
 import java.awt.Graphics2D;
-import java.awt.geom.Path2D;
+import java.awt.RenderingHints;
-import java.awt.geom.Rectangle2D;
+import java.awt.geom.Line2D;
+import java.awt.geom.RoundRectangle2D;
 import javax.swing.UIManager;
 
 /**
@@ -41,17 +43,18 @@ public class FlatFileViewComputerIcon
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
 			  <g fill="none" fill-rule="evenodd">
-			    <path fill="#6E6E6E" d="M2,3 L14,3 L14,11 L2,11 L2,3 Z M4,5 L4,9 L12,9 L12,5 L4,5 Z"/>
+			    <rect width="11" height="7" x="2.5" y="3.5" stroke="#6E6E6E" rx="1"/>
-			    <rect width="12" height="2" x="2" y="12" fill="#6E6E6E"/>
+			    <line x1="8" x2="8" y1="11" y2="12" stroke="#6E6E6E"/>
+			    <line x1="4.5" x2="11.5" y1="12.5" y2="12.5" stroke="#6E6E6E" stroke-linecap="round"/>
 			  </g>
 			</svg>
 		*/
 
-		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
-		path.append( new Rectangle2D.Float( 2, 3, 12, 8 ), false );
+		g.setStroke( new BasicStroke( 1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
-		path.append( new Rectangle2D.Float( 4, 5, 8, 4 ), false );
-		g.fill( path );
 
-		g.fillRect( 2, 12, 12, 2 );
+		g.draw( new RoundRectangle2D.Float( 2.5f, 3.5f, 11, 7, 2, 2 ) );
+		g.drawLine( 8, 11, 8, 12 );
+		g.draw( new Line2D.Float( 4.5f, 12.5f, 11.5f, 12.5f ) );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatFileViewDirectoryIcon.java

@@ -18,6 +18,8 @@ package com.formdev.flatlaf.icons;
 
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.Path2D;
 import javax.swing.UIManager;
 import com.formdev.flatlaf.ui.FlatUIUtils;
 
@@ -31,6 +33,8 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatFileViewDirectoryIcon
 	extends FlatAbstractIcon
 {
+	private Path2D path;
+
 	public FlatFileViewDirectoryIcon() {
 		super( 16, 16, UIManager.getColor( "Objects.Grey" ) );
 	}
@@ -39,10 +43,32 @@ public class FlatFileViewDirectoryIcon
 	protected void paintIcon( Component c, Graphics2D g ) {
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
-			  <polygon fill="#6E6E6E" fill-rule="evenodd" points="1 2 6 2 8 4 15 4 15 13 1 13"/>
+			  <path fill="none" stroke="#6E6E6E" d="M13,13.5 L3,13.5 C2.17157288,13.5 1.5,12.8284271 1.5,12 L1.5,4 C1.5,3.17157288 2.17157288,2.5 3,2.5 L6.29289322,2.5 C6.42550146,2.5 6.55267842,2.55267842 6.64644661,2.64644661 L8.5,4.5 L8.5,4.5 L13,4.5 C13.8284271,4.5 14.5,5.17157288 14.5,6 L14.5,12 C14.5,12.8284271 13.8284271,13.5 13,13.5 Z"/>
 			</svg>
 		*/
 
-		g.fill( FlatUIUtils.createPath( 1,2, 6,2, 8,4, 15,4, 15,13, 1,13 ) );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
+
+		if( path == null )
+			path = createFolderPath();
+		g.draw( path );
+	}
+
+	static Path2D createFolderPath() {
+		double arc = 1.5;
+		double arc2 = 0.5;
+		return FlatUIUtils.createPath(
+			// bottom-right
+			14.5,13.5-arc,  FlatUIUtils.QUAD_TO, 14.5,13.5, 14.5-arc,13.5,
+			// bottom-left
+			1.5+arc,13.5,   FlatUIUtils.QUAD_TO, 1.5,13.5,  1.5,13.5-arc,
+			// top-left
+			1.5,2.5+arc,    FlatUIUtils.QUAD_TO, 1.5,2.5,   1.5+arc,2.5,
+			// top-mid-left
+			6.5-arc2,2.5,   FlatUIUtils.QUAD_TO, 6.5,2.5,   6.5+arc2,2.5+arc2,
+			// top-mid-right
+			8.5,4.5,
+			// top-right
+			14.5-arc,4.5,   FlatUIUtils.QUAD_TO, 14.5,4.5,  14.5,4.5+arc );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatFileViewFileIcon.java

@@ -16,8 +16,11 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.Path2D;
 import javax.swing.UIManager;
 import com.formdev.flatlaf.ui.FlatUIUtils;
 
@@ -31,6 +34,8 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatFileViewFileIcon
 	extends FlatAbstractIcon
 {
+	private Path2D path;
+
 	public FlatFileViewFileIcon() {
 		super( 16, 16, UIManager.getColor( "Objects.Grey" ) );
 	}
@@ -39,14 +44,33 @@ public class FlatFileViewFileIcon
 	protected void paintIcon( Component c, Graphics2D g ) {
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
-			  <g fill="none" fill-rule="evenodd">
+			  <g fill="none" fill-rule="evenodd" stroke-linejoin="round">
-			    <polygon fill="#6E6E6E" points="8 6 8 1 13 1 13 15 3 15 3 6"/>
+			    <path stroke="#6E6E6E" d="M4,1.5 L8.8,1.5 L8.8,1.5 L13.5,6.2 L13.5,13 C13.5,13.8284271 12.8284271,14.5 12,14.5 L4,14.5 C3.17157288,14.5 2.5,13.8284271 2.5,13 L2.5,3 C2.5,2.17157288 3.17157288,1.5 4,1.5 Z"/>
-			    <polygon fill="#6E6E6E" points="3 5 7 5 7 1"/>
+			    <path stroke="#6E6E6E" d="M8.5,2 L8.5,5 C8.5,5.82842712 9.17157288,6.5 10,6.5 L13,6.5 L13,6.5"/>
 			  </g>
 			</svg>
 		*/
 
-		g.fill( FlatUIUtils.createPath( 8,6, 8,1, 13,1, 13,15, 3,15, 3,6 ) );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
-		g.fill( FlatUIUtils.createPath( 3,5, 7,5, 7,1 ) );
+		g.setStroke( new BasicStroke( 1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
+
+		if( path == null ) {
+			double arc = 1.5;
+			path = FlatUIUtils.createPath( false,
+				// top-left
+				2.5,1.5+arc,    FlatUIUtils.QUAD_TO, 2.5,1.5,   2.5+arc,1.5,
+				// top-right
+				8.8,1.5, 13.5,6.2,
+				// bottom-right
+				13.5,14.5-arc,  FlatUIUtils.QUAD_TO, 13.5,14.5, 13.5-arc,14.5,
+				// bottom-left
+				2.5+arc,14.5,   FlatUIUtils.QUAD_TO, 2.5,14.5,  2.5,14.5-arc,
+				FlatUIUtils.CLOSE_PATH,
+
+				FlatUIUtils.MOVE_TO, 8.5,2,
+				8.5,6.5-arc,    FlatUIUtils.QUAD_TO, 8.5,6.5,   8.5+arc,6.5,
+				13,6.5 );
+		}
+		g.draw( path );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatFileViewFloppyDriveIcon.java

@@ -16,9 +16,10 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Component;
 import java.awt.Graphics2D;
-import java.awt.geom.Path2D;
+import java.awt.RenderingHints;
 import javax.swing.UIManager;
 import com.formdev.flatlaf.ui.FlatUIUtils;
 
@@ -40,18 +41,22 @@ public class FlatFileViewFloppyDriveIcon
 	protected void paintIcon( Component c, Graphics2D g ) {
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
-			  <g fill="none" fill-rule="evenodd">
+			  <g fill="none" fill-rule="evenodd" stroke-linejoin="round">
-			    <path fill="#6E6E6E" d="M11,14 L11,11 L5,11 L5,14 L2,14 L2,2 L14,2 L14,14 L11,14 Z M4,4 L4,8 L12,8 L12,4 L4,4 Z"/>
+			    <path stroke="#6E6E6E" d="M3.5,2.5 L11.5,2.5 L11.5,2.5 L13.5,4.5 L13.5,12.5 C13.5,13.0522847 13.0522847,13.5 12.5,13.5 L3.5,13.5 C2.94771525,13.5 2.5,13.0522847 2.5,12.5 L2.5,3.5 C2.5,2.94771525 2.94771525,2.5 3.5,2.5 Z"/>
-			    <rect width="4" height="2" x="6" y="12" fill="#6E6E6E"/>
+			    <polyline stroke="#6E6E6E" points="4.5 13 4.5 9.5 11.5 9.5 11.5 13"/>
+			    <polyline stroke="#6E6E6E" points="5.5 3 5.5 5.5 10.5 5.5 10.5 3"/>
 			  </g>
 			</svg>
 		*/
 
-		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
-		path.append( FlatUIUtils.createPath( 11,14, 11,11, 5,11, 5,14, 2,14, 2,2, 14,2, 14,14, 11,14 ), false );
+		g.setStroke( new BasicStroke( 1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
-		path.append( FlatUIUtils.createPath( 4,4, 4,8, 12,8, 12,4, 4,4 ), false );
-		g.fill( path );
 
-		g.fillRect( 6, 12, 4, 2 );
+		g.draw( FlatUIUtils.createPath( 3.5,2.5, 11.5,2.5, 11.5,2.5, 13.5,4.5,
+			13.5,12.5, FlatUIUtils.QUAD_TO, 13.5,13.5, 12.5,13.5,
+			3.5,13.5,  FlatUIUtils.QUAD_TO, 2.5,13.5,  2.5,12.5,
+			2.5,3.5,   FlatUIUtils.QUAD_TO, 2.5,2.5,   3.5,2.5 ) );
+		g.draw( FlatUIUtils.createPath( false, 4.5,13, 4.5,9.5, 11.5,9.5, 11.5,13 ) );
+		g.draw( FlatUIUtils.createPath( false, 5.5,3, 5.5,5.5, 10.5,5.5, 10.5,3 ) );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatFileViewHardDriveIcon.java

@@ -16,10 +16,12 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Component;
 import java.awt.Graphics2D;
-import java.awt.geom.Path2D;
+import java.awt.RenderingHints;
-import java.awt.geom.Rectangle2D;
+import java.awt.geom.Ellipse2D;
+import java.awt.geom.RoundRectangle2D;
 import javax.swing.UIManager;
 
 /**
@@ -40,14 +42,19 @@ public class FlatFileViewHardDriveIcon
 	protected void paintIcon( Component c, Graphics2D g ) {
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
-			  <path fill="#6E6E6E" fill-rule="evenodd" d="M2,6 L14,6 L14,10 L2,10 L2,6 Z M12,8 L12,9 L13,9 L13,8 L12,8 Z M10,8 L10,9 L11,9 L11,8 L10,8 Z"/>
+			  <g fill="none" fill-rule="evenodd">
+			    <rect width="11" height="5" x="2.5" y="5.5" stroke="#6E6E6E" rx="1"/>
+			    <circle cx="11.5" cy="8.5" r="1" fill="#6E6E6E"/>
+			    <circle cx="9.5" cy="8.5" r="1" fill="#6E6E6E"/>
+			  </g>
 			</svg>
 		*/
 
-		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
-		path.append( new Rectangle2D.Float( 2, 6, 12, 4 ), false );
+		g.setStroke( new BasicStroke( 1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
-		path.append( new Rectangle2D.Float( 12, 8, 1, 1 ), false );
+
-		path.append( new Rectangle2D.Float( 10, 8, 1, 1 ), false );
+		g.draw( new RoundRectangle2D.Float( 2.5f, 5.5f, 11, 5, 2, 2 ) );
-		g.fill( path );
+		g.fill( new Ellipse2D.Float( 10.8f, 7.8f, 1.4f, 1.4f ) );
+		g.fill( new Ellipse2D.Float( 8.8f, 7.8f, 1.4f, 1.4f ) );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatHelpButtonIcon.java

@@ -17,9 +17,11 @@
 package com.formdev.flatlaf.icons;
 
 import static com.formdev.flatlaf.util.UIScale.*;
+import java.awt.BasicStroke;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.RenderingHints;
 import java.awt.geom.Ellipse2D;
 import java.awt.geom.Path2D;
 import java.util.Map;
@@ -84,6 +86,11 @@ public class FlatHelpButtonIcon
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	public Object getStyleableValue( String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	protected void paintIcon( Component c, Graphics2D g2 ) {
 		/*
@@ -91,7 +98,8 @@ public class FlatHelpButtonIcon
 			  <g fill="none" fill-rule="evenodd">
 			    <circle cx="11" cy="11" r="10.5" fill="#6E6E6E"/>
 			    <circle cx="11" cy="11" r="9.5" fill="#FFF"/>
-			    <path fill="#6E6E6E" d="M10,17 L12,17 L12,15 L10,15 L10,17 Z M11,5 C8.8,5 7,6.8 7,9 L9,9 C9,7.9 9.9,7 11,7 C12.1,7 13,7.9 13,9 C13,11 10,10.75 10,14 L12,14 C12,11.75 15,11.5 15,9 C15,6.8 13.2,5 11,5 Z"/>
+			    <path stroke="#6E6E6E" stroke-linecap="round" stroke-width="2" d="M8,8.5 C8.25,7 9.66585007,6 11,6 C12.5,6 14,7 14,8.5 C14,10.5 11,11 11,13"/>
+			    <circle cx="11" cy="16" r="1.2" fill="#6E6E6E"/>
 			  </g>
 			</svg>
 		*/
@@ -142,22 +150,19 @@ public class FlatHelpButtonIcon
 		g2.fill( new Ellipse2D.Float( xy, xy, wh, wh ) );
 
 		// paint question mark
-		Path2D q = new Path2D.Float();
+		Path2D q = new Path2D.Float( Path2D.WIND_NON_ZERO, 10 );
-		q.moveTo( 11, 5 );
+		q.moveTo( 8,8.5 );
-		q.curveTo( 8.8,5, 7,6.8, 7,9 );
+		q.curveTo( 8.25,7, 9.66585007,6, 11,6 );
-		q.lineTo( 9, 9 );
+		q.curveTo( 12.5,6, 14,7, 14,8.5 );
-		q.curveTo( 9,7.9, 9.9,7, 11,7 );
+		q.curveTo( 14,10.5, 11,11, 11,13 );
-		q.curveTo( 12.1,7, 13,7.9, 13,9 );
+
-		q.curveTo( 13,11, 10,10.75, 10,14 );
+		g2.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
-		q.lineTo( 12, 14 );
+		g2.setStroke( new BasicStroke( 2, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
-		q.curveTo( 12,11.75, 15,11.5, 15,9 );
-		q.curveTo( 15,6.8, 13.2,5, 11,5 );
-		q.closePath();
 
 		g2.translate( focusWidth, focusWidth );
 		g2.setColor( enabled ? questionMarkColor : disabledQuestionMarkColor );
-		g2.fill( q );
+		g2.draw( q );
-		g2.fillRect( 10, 15, 2, 2 );
+		g2.fill( new Ellipse2D.Float( 9.8f, 14.8f, 2.4f, 2.4f ) );
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatInternalFrameCloseIcon.java

@@ -20,7 +20,6 @@ import java.awt.BasicStroke;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics2D;
-import java.awt.geom.Line2D;
 import java.awt.geom.Path2D;
 import javax.swing.UIManager;
 import com.formdev.flatlaf.ui.FlatButtonUI;
@@ -58,9 +57,11 @@ public class FlatInternalFrameCloseIcon
 		float my = height / 2;
 		float r = 3.25f;
 
-		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD, 4 );
-		path.append( new Line2D.Float( mx - r, my - r, mx + r, my + r ), false );
+		path.moveTo( mx - r, my - r );
-		path.append( new Line2D.Float( mx - r, my + r, mx + r, my - r ), false );
+		path.lineTo( mx + r, my + r );
+		path.moveTo( mx - r, my + r );
+		path.lineTo( mx + r, my - r );
 		g.setStroke( new BasicStroke( 1f ) );
 		g.draw( path );
 	}

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatMenuArrowIcon.java

@@ -61,6 +61,11 @@ public class FlatMenuArrowIcon
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	public Object getStyleableValue( String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
 		if( c != null && !c.getComponentOrientation().isLeftToRight() )

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatOptionPaneErrorIcon.java

@@ -19,7 +19,7 @@ package com.formdev.flatlaf.icons;
 import java.awt.Shape;
 import java.awt.geom.Ellipse2D;
 import java.awt.geom.Path2D;
-import java.awt.geom.Rectangle2D;
+import java.awt.geom.RoundRectangle2D;
 
 /**
  * "Error" icon for {@link javax.swing.JOptionPane}.
@@ -40,8 +40,8 @@ public class FlatOptionPaneErrorIcon
 		<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32">
 		  <g fill="none" fill-rule="evenodd">
 		    <circle cx="16" cy="16" r="14" fill="#DB5860"/>
-		    <rect width="4" height="11" x="14" y="7" fill="#FFF"/>
+		    <rect width="4" height="12" x="14" y="7" fill="#FFF" rx="2"/>
-		    <rect width="4" height="4" x="14" y="21" fill="#FFF"/>
+		    <circle cx="16" cy="23" r="2" fill="#FFF"/>
 		  </g>
 		</svg>
 	*/
@@ -54,8 +54,8 @@ public class FlatOptionPaneErrorIcon
 	@Override
 	protected Shape createInside() {
 		Path2D inside = new Path2D.Float( Path2D.WIND_EVEN_ODD );
-		inside.append( new Rectangle2D.Float( 14, 7, 4, 11 ), false );
+		inside.append( new RoundRectangle2D.Float( 14, 7, 4, 12, 4, 4 ), false );
-		inside.append( new Rectangle2D.Float( 14, 21, 4, 4 ), false );
+		inside.append( new Ellipse2D.Float( 14, 21, 4, 4 ), false );
 		return inside;
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatOptionPaneInformationIcon.java

@@ -19,7 +19,7 @@ package com.formdev.flatlaf.icons;
 import java.awt.Shape;
 import java.awt.geom.Ellipse2D;
 import java.awt.geom.Path2D;
-import java.awt.geom.Rectangle2D;
+import java.awt.geom.RoundRectangle2D;
 
 /**
  * "Information" icon for {@link javax.swing.JOptionPane}.
@@ -40,8 +40,8 @@ public class FlatOptionPaneInformationIcon
 		<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32">
 		  <g fill="none" fill-rule="evenodd">
 		    <circle cx="16" cy="16" r="14" fill="#389FD6"/>
-		    <rect width="4" height="11" x="14" y="14" fill="#FFF"/>
+		    <rect width="4" height="12" x="14" y="13" fill="#FFF" rx="2"/>
-		    <rect width="4" height="4" x="14" y="7" fill="#FFF"/>
+		    <circle cx="16" cy="9" r="2" fill="#FFF"/>
 		  </g>
 		</svg>
 	*/
@@ -54,8 +54,8 @@ public class FlatOptionPaneInformationIcon
 	@Override
 	protected Shape createInside() {
 		Path2D inside = new Path2D.Float( Path2D.WIND_EVEN_ODD );
-		inside.append( new Rectangle2D.Float( 14, 14, 4, 11 ), false );
+		inside.append( new RoundRectangle2D.Float( 14, 13, 4, 12, 4, 4 ), false );
-		inside.append( new Rectangle2D.Float( 14, 7, 4, 4 ), false );
+		inside.append( new Ellipse2D.Float( 14, 7, 4, 4 ), false );
 		return inside;
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatOptionPaneQuestionIcon.java

@@ -16,10 +16,10 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Shape;
 import java.awt.geom.Ellipse2D;
 import java.awt.geom.Path2D;
-import java.awt.geom.Rectangle2D;
 
 /**
  * "Question" icon for {@link javax.swing.JOptionPane}.
@@ -40,8 +40,8 @@ public class FlatOptionPaneQuestionIcon
 		<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32">
 		  <g fill="none" fill-rule="evenodd">
 		    <circle cx="16" cy="16" r="14" fill="#389FD6"/>
-		    <rect width="4" height="4" x="14" y="22" fill="#FFF"/>
+		    <circle cx="16" cy="24" r="1.7" fill="#FFF"/>
-		    <path fill="#FFF" d="M14,20 C14,20 18,20 18,20 C18,16 23,16 23,12 C23,8 20,6 16,6 C12,6 9,8 9,12 C9,12 13,12 13,12 C13,10 14,9 16,9 C18,9 19,10 19,12 C19,15 14,15 14,20 Z"/>
+		    <path stroke="#FFF" stroke-linecap="round" stroke-width="3" d="M11.5,11.75 C11.75,9.5 13.75,8 16,8 C18.25,8 20.5,9.5 20.5,11.75 C20.5,14.75 16,15.5 16,19"/>
 		  </g>
 		</svg>
 	*/
@@ -53,21 +53,17 @@ public class FlatOptionPaneQuestionIcon
 
 	@Override
 	protected Shape createInside() {
-		Path2D q = new Path2D.Float();
+		Path2D q = new Path2D.Float( Path2D.WIND_NON_ZERO, 10 );
-		q.moveTo( 14, 20 );
+		q.moveTo( 11.5,11.75 );
-		q.lineTo( 18, 20 );
+		q.curveTo( 11.75,9.5, 13.75,8, 16,8 );
-		q.curveTo( 18, 16, 23, 16, 23, 12 );
+		q.curveTo( 18.25,8, 20.5,9.5, 20.5,11.75 );
-		q.curveTo( 23, 8, 20, 6, 16, 6 );
+		q.curveTo( 20.5,14.75, 16,15.5, 16,19 );
-		q.curveTo( 12, 6, 9, 8, 9, 12 );
+
-		q.curveTo( 9, 12, 13, 12, 13, 12 );
+		BasicStroke stroke = new BasicStroke( 3, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER );
-		q.curveTo( 13, 10, 14, 9, 16, 9 );
-		q.curveTo( 18, 9, 19, 10, 19, 12 );
-		q.curveTo( 19, 15, 14, 15, 14, 20 );
-		q.closePath();
 
 		Path2D inside = new Path2D.Float( Path2D.WIND_EVEN_ODD );
-		inside.append( new Rectangle2D.Float( 14, 22, 4, 4 ), false );
+		inside.append( new Ellipse2D.Float( 14.3f, 22.3f, 3.4f, 3.4f ), false );
-		inside.append( q, false );
+		inside.append( stroke.createStrokedShape( q ), false );
 		return inside;
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatOptionPaneWarningIcon.java

@@ -17,8 +17,9 @@
 package com.formdev.flatlaf.icons;
 
 import java.awt.Shape;
+import java.awt.geom.Ellipse2D;
 import java.awt.geom.Path2D;
-import java.awt.geom.Rectangle2D;
+import java.awt.geom.RoundRectangle2D;
 import com.formdev.flatlaf.ui.FlatUIUtils;
 
 /**
@@ -39,23 +40,24 @@ public class FlatOptionPaneWarningIcon
 	/*
 		<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32">
 		  <g fill="none" fill-rule="evenodd">
-		    <polygon fill="#EDA200" points="16 2 31 28 1 28"/>
+		    <path fill="#EDA200" d="M17.7364863,3.038851 L30.2901269,25.0077221 C30.8381469,25.966757 30.5049534,27.1884663 29.5459185,27.7364863 C29.2437231,27.9091694 28.9016945,28 28.5536406,28 L3.44635936,28 C2.34178986,28 1.44635936,27.1045695 1.44635936,26 C1.44635936,25.6519461 1.53718999,25.3099175 1.70987307,25.0077221 L14.2635137,3.038851 C14.8115337,2.0798161 16.033243,1.74662265 16.9922779,2.29464259 C17.3023404,2.47182119 17.5593077,2.72878844 17.7364863,3.038851 Z"/>
-		    <rect width="4" height="8" x="14" y="10" fill="#FFF"/>
+		    <rect width="4" height="11" x="14" y="8" fill="#FFF" rx="2"/>
-		    <rect width="4" height="4" x="14" y="21" fill="#FFF"/>
+		    <circle cx="16" cy="23" r="2" fill="#FFF"/>
 		  </g>
 		</svg>
 	*/
 
 	@Override
 	protected Shape createOutside() {
-		return FlatUIUtils.createPath( 16,2, 31,28, 1,28 );
+		return FlatUIUtils.createRoundTrianglePath( 16,0, 32,28, 0,28, 4 );
+
 	}
 
 	@Override
 	protected Shape createInside() {
 		Path2D inside = new Path2D.Float( Path2D.WIND_EVEN_ODD );
-		inside.append( new Rectangle2D.Float( 14, 10, 4, 8 ), false );
+		inside.append( new RoundRectangle2D.Float( 14, 8, 4, 11, 4, 4 ), false );
-		inside.append( new Rectangle2D.Float( 14, 21, 4, 4 ), false );
+		inside.append( new Ellipse2D.Float( 14, 21, 4, 4 ), false );
 		return inside;
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatSearchIcon.java

@@ -46,6 +46,7 @@ public class FlatSearchIcon
 	@Styleable protected Color searchIconPressedColor = UIManager.getColor( "SearchField.searchIconPressedColor" );
 
 	private final boolean ignoreButtonState;
+	private Area area;
 
 	public FlatSearchIcon() {
 		this( false );
@@ -67,6 +68,11 @@ public class FlatSearchIcon
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	public Object getStyleableValue( String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
 		/*
@@ -84,9 +90,11 @@ public class FlatSearchIcon
 				null, searchIconHoverColor, searchIconPressedColor ) );
 
 		// paint magnifier
-		Area area = new Area( new Ellipse2D.Float( 2, 2, 10, 10 ) );
+		if( area == null ) {
-		area.subtract( new Area( new Ellipse2D.Float( 3, 3, 8, 8 ) ) );
+			area = new Area( new Ellipse2D.Float( 2, 2, 10, 10 ) );
-		area.add( new Area( FlatUIUtils.createPath( 10.813,9.75, 14,12.938, 12.938,14, 9.75,10.813 ) ) );
+			area.subtract( new Area( new Ellipse2D.Float( 3, 3, 8, 8 ) ) );
+			area.add( new Area( FlatUIUtils.createPath( 10.813,9.75, 14,12.938, 12.938,14, 9.75,10.813 ) ) );
+		}
 		g.fill( area );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatTabbedPaneCloseIcon.java

@@ -21,7 +21,6 @@ import java.awt.Color;
 import java.awt.Component;
 import java.awt.Dimension;
 import java.awt.Graphics2D;
-import java.awt.geom.Line2D;
 import java.awt.geom.Path2D;
 import java.util.Map;
 import javax.swing.UIManager;
@@ -76,6 +75,11 @@ public class FlatTabbedPaneCloseIcon
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	public Object getStyleableValue( String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	protected void paintIcon( Component c, Graphics2D g ) {
 		// paint background
@@ -95,9 +99,11 @@ public class FlatTabbedPaneCloseIcon
 		float r = ((bg != null) ? closeCrossFilledSize : closeCrossPlainSize) / 2;
 
 		// paint cross
-		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD, 4 );
-		path.append( new Line2D.Float( mx - r, my - r, mx + r, my + r ), false );
+		path.moveTo( mx - r, my - r );
-		path.append( new Line2D.Float( mx - r, my + r, mx + r, my - r ), false );
+		path.lineTo( mx + r, my + r );
+		path.moveTo( mx - r, my + r );
+		path.lineTo( mx + r, my - r );
 		g.setStroke( new BasicStroke( closeCrossLineWidth ) );
 		g.draw( path );
 	}

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatTreeClosedIcon.java

@@ -18,8 +18,9 @@ package com.formdev.flatlaf.icons;
 
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.Path2D;
 import javax.swing.UIManager;
-import com.formdev.flatlaf.ui.FlatUIUtils;
 
 /**
  * "closed" icon for {@link javax.swing.JTree} used by {@link javax.swing.tree.DefaultTreeCellRenderer}.
@@ -31,6 +32,8 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatTreeClosedIcon
 	extends FlatAbstractIcon
 {
+	private Path2D path;
+
 	public FlatTreeClosedIcon() {
 		super( 16, 16, UIManager.getColor( "Tree.icon.closedColor" ) );
 	}
@@ -41,10 +44,14 @@ public class FlatTreeClosedIcon
 
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
-			  <polygon fill="#6E6E6E" fill-rule="evenodd" points="1 2 6 2 8 4 15 4 15 13 1 13"/>
+			  <path fill="none" stroke="#6E6E6E" d="M13,13.5 L3,13.5 C2.17157288,13.5 1.5,12.8284271 1.5,12 L1.5,4 C1.5,3.17157288 2.17157288,2.5 3,2.5 L6.29289322,2.5 C6.42550146,2.5 6.55267842,2.55267842 6.64644661,2.64644661 L8.5,4.5 L8.5,4.5 L13,4.5 C13.8284271,4.5 14.5,5.17157288 14.5,6 L14.5,12 C14.5,12.8284271 13.8284271,13.5 13,13.5 Z"/>
 			</svg>
 		*/
 
-		g.fill( FlatUIUtils.createPath( 1,2, 6,2, 8,4, 15,4, 15,13, 1,13 ) );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
+
+		if( path == null )
+			path = FlatFileViewDirectoryIcon.createFolderPath();
+		g.draw( path );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatTreeCollapsedIcon.java

@@ -16,9 +16,11 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.geom.Path2D;
 import java.util.function.Function;
 import javax.swing.JTree;
 import javax.swing.SwingUtilities;
@@ -39,6 +41,7 @@ public class FlatTreeCollapsedIcon
 	extends FlatAbstractIcon
 {
 	private final boolean chevron;
+	private Path2D path;
 
 	public FlatTreeCollapsedIcon() {
 		this( UIManager.getColor( "Tree.icon.collapsedColor" ) );
@@ -59,10 +62,15 @@ public class FlatTreeCollapsedIcon
 
 		if( chevron ) {
 			// chevron arrow
-			g.fill( FlatUIUtils.createPath( 3,1, 3,2.5, 6,5.5, 3,8.5, 3,10, 4.5,10, 9,5.5, 4.5,1 ) );
+			g.setStroke( new BasicStroke( 1f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER ) );
+			if( path == null )
+				path = FlatUIUtils.createPath( false, 3.5,1.5, 7.5,5.5, 3.5,9.5 );
+			g.draw( path );
 		} else {
 			// triangle arrow
-			g.fill( FlatUIUtils.createPath( 2,1, 2,10, 10,5.5 ) );
+			if( path == null )
+				path = FlatUIUtils.createPath( 2,1, 2,10, 10,5.5 );
+			g.fill( path );
 		}
 	}
 

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatTreeLeafIcon.java

@@ -16,10 +16,14 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.Line2D;
+import java.awt.geom.RoundRectangle2D;
 import javax.swing.UIManager;
-import com.formdev.flatlaf.ui.FlatUIUtils;
+import com.formdev.flatlaf.util.ColorFunctions;
 
 /**
  * "leaf" icon for {@link javax.swing.JTree} used by {@link javax.swing.tree.DefaultTreeCellRenderer}.
@@ -42,13 +46,22 @@ public class FlatTreeLeafIcon
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
 			  <g fill="none" fill-rule="evenodd">
-			    <polygon fill="#6E6E6E" points="8 6 8 1 13 1 13 15 3 15 3 6"/>
+			    <rect width="11" height="13" x="2.5" y="1.5" stroke="#6E6E6E" rx="1.5"/>
-			    <polygon fill="#6E6E6E" points="3 5 7 5 7 1"/>
+			    <line x1="5.5" x2="10.5" y1="5.5" y2="5.5" stroke="#6E6E6E" stroke-linecap="round" stroke-opacity=".6"/>
+			    <line x1="5.5" x2="10.5" y1="8" y2="8" stroke="#6E6E6E" stroke-linecap="round" stroke-opacity=".6"/>
+			    <line x1="5.5" x2="10.5" y1="10.5" y2="10.5" stroke="#6E6E6E" stroke-linecap="round" stroke-opacity=".6"/>
 			  </g>
 			</svg>
 		*/
 
-		g.fill( FlatUIUtils.createPath( 8,6, 8,1, 13,1, 13,15, 3,15, 3,6 ) );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
-		g.fill( FlatUIUtils.createPath( 3,5, 7,5, 7,1 ) );
+		g.setStroke( new BasicStroke( 1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND ) );
+
+		g.draw( new RoundRectangle2D.Float( 2.5f, 1.5f, 11, 13, 3, 3 ) );
+
+		g.setColor( ColorFunctions.fade( g.getColor(), 0.6f ) );
+		g.draw( new Line2D.Float( 5.5f, 5.5f, 10.5f, 5.5f ) );
+		g.draw( new Line2D.Float( 5.5f, 8, 10.5f, 8 ) );
+		g.draw( new Line2D.Float( 5.5f, 10.5f, 10.5f, 10.5f ) );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatTreeOpenIcon.java

@@ -16,8 +16,11 @@
 
 package com.formdev.flatlaf.icons;
 
+import java.awt.BasicStroke;
 import java.awt.Component;
 import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.Path2D;
 import javax.swing.UIManager;
 import com.formdev.flatlaf.ui.FlatUIUtils;
 
@@ -31,6 +34,8 @@ import com.formdev.flatlaf.ui.FlatUIUtils;
 public class FlatTreeOpenIcon
 	extends FlatAbstractIcon
 {
+	private Path2D path;
+
 	public FlatTreeOpenIcon() {
 		super( 16, 16, UIManager.getColor( "Tree.icon.openColor" ) );
 	}
@@ -41,14 +46,38 @@ public class FlatTreeOpenIcon
 
 		/*
 			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
-			  <g fill="none" fill-rule="evenodd">
+			  <path fill="none" stroke="#6E6E6E" d="M2,13.5 L4.11538462,8.42307692 C4.34828895,7.86410651 4.89444872,7.5 5.5,7.5 L14.75,7.5 C15.0261424,7.5 15.25,7.72385763 15.25,8 C15.25,8.06601301 15.2369281,8.13137261 15.2115385,8.19230769 L13.3846154,12.5769231 C13.151711,13.1358935 12.6055513,13.5 12,13.5 L3,13.5 C2.17157288,13.5 1.5,12.8284271 1.5,12 L1.5,4 C1.5,3.17157288 2.17157288,2.5 3,2.5 L6.29289322,2.5 C6.42550146,2.5 6.55267842,2.55267842 6.64644661,2.64644661 L8.5,4.5 L8.5,4.5 L12,4.5 C12.8284271,4.5 13.5,5.17157288 13.5,6 L13.5,6.5 L13.5,6.5"/>
-			    <polygon fill="#6E6E6E" points="1 2 6 2 8 4 14 4 14 6 3.5 6 1 11"/>
-			    <polygon fill="#6E6E6E" points="4 7 16 7 13 13 1 13"/>
-			  </g>
 			</svg>
 		*/
 
-		g.fill( FlatUIUtils.createPath( 1,2, 6,2, 8,4, 14,4, 14,6, 3.5,6, 1,11 ) );
+		g.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE );
-		g.fill( FlatUIUtils.createPath( 4,7, 16,7, 13,13, 1,13 ) );
+		g.setStroke( new BasicStroke( 1, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER ) );
+
+		if( path == null ) {
+			double arc = 1.5;
+			double arc2 = 0.5;
+			path = FlatUIUtils.createPath( false,
+				// bottom-left of opend part
+				2,13.5,
+				// top-left of opend part
+				FlatUIUtils.ROUNDED, 4.5,7.5, arc,
+				// top-right of opend part
+				FlatUIUtils.ROUNDED, 15.5,7.5, arc2,
+
+				// bottom-right
+				FlatUIUtils.ROUNDED, 13,13.5, arc,
+				// bottom-left
+				1.5+arc,13.5,   FlatUIUtils.QUAD_TO, 1.5,13.5,  1.5,13.5-arc,
+				// top-left
+				1.5,2.5+arc,    FlatUIUtils.QUAD_TO, 1.5,2.5,   1.5+arc,2.5,
+				// top-mid-left
+				6.5-arc2,2.5,   FlatUIUtils.QUAD_TO, 6.5,2.5,   6.5+arc2,2.5+arc2,
+				// top-mid-right
+				8.5,4.5,
+				// top-right
+				13.5-arc,4.5,   FlatUIUtils.QUAD_TO, 13.5,4.5,  13.5,4.5+arc,
+				13.5,6.5 );
+		}
+		g.draw( path );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/icons/FlatWindowCloseIcon.java

@@ -20,7 +20,6 @@ import java.awt.BasicStroke;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Graphics2D;
-import java.awt.geom.Line2D;
 import java.awt.geom.Path2D;
 import javax.swing.UIManager;
 import com.formdev.flatlaf.ui.FlatButtonUI;
@@ -57,9 +56,11 @@ public class FlatWindowCloseIcon
 		int iy2 = iy + iwh - 1;
 		float thickness = SystemInfo.isWindows_11_orLater ? (float) scaleFactor : (int) scaleFactor;
 
-		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD, 4 );
-		path.append( new Line2D.Float( ix, iy, ix2, iy2 ), false );
+		path.moveTo( ix, iy );
-		path.append( new Line2D.Float( ix, iy2, ix2, iy ), false );
+		path.lineTo( ix2, iy2 );
+		path.moveTo( ix, iy2 );
+		path.lineTo( ix2, iy );
 		g.setStroke( new BasicStroke( thickness ) );
 		g.draw( path );
 	}

flatlaf-core/src/main/java/com/formdev/flatlaf/themes/FlatMacDarkLaf.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2022 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.themes;
+
+import javax.swing.UIManager;
+import com.formdev.flatlaf.FlatDarkLaf;
+
+/**
+ * A Flat LaF that imitates macOS dark look.
+ * <p>
+ * The UI defaults are loaded from {@code FlatMacDarkLaf.properties},
+ * {@code FlatDarkLaf.properties} and {@code FlatLaf.properties}.
+ *
+ * @author Karl Tauber
+ * @since 3
+ */
+public class FlatMacDarkLaf
+	extends FlatDarkLaf
+{
+	public static final String NAME = "FlatLaf macOS Dark";
+
+	/**
+	 * Sets the application look and feel to this LaF
+	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 */
+	public static boolean setup() {
+		return setup( new FlatMacDarkLaf() );
+	}
+
+	/**
+	 * Adds this look and feel to the set of available look and feels.
+	 * <p>
+	 * Useful if your application uses {@link UIManager#getInstalledLookAndFeels()}
+	 * to query available LaFs and display them to the user in a combobox.
+	 */
+	public static void installLafInfo() {
+		installLafInfo( NAME, FlatMacDarkLaf.class );
+	}
+
+	@Override
+	public String getName() {
+		return NAME;
+	}
+
+	@Override
+	public String getDescription() {
+		return "FlatLaf macOS Dark Look and Feel";
+	}
+
+	@Override
+	public boolean isDark() {
+		return true;
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/themes/FlatMacLightLaf.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2022 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.themes;
+
+import javax.swing.UIManager;
+import com.formdev.flatlaf.FlatLightLaf;
+
+/**
+ * A Flat LaF that imitates macOS light look.
+ * <p>
+ * The UI defaults are loaded from {@code FlatMacLightLaf.properties},
+ * {@code FlatLightLaf.properties} and {@code FlatLaf.properties}.
+ *
+ * @author Karl Tauber
+ * @since 3
+ */
+public class FlatMacLightLaf
+	extends FlatLightLaf
+{
+	public static final String NAME = "FlatLaf macOS Light";
+
+	/**
+	 * Sets the application look and feel to this LaF
+	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 */
+	public static boolean setup() {
+		return setup( new FlatMacLightLaf() );
+	}
+
+	/**
+	 * Adds this look and feel to the set of available look and feels.
+	 * <p>
+	 * Useful if your application uses {@link UIManager#getInstalledLookAndFeels()}
+	 * to query available LaFs and display them to the user in a combobox.
+	 */
+	public static void installLafInfo() {
+		installLafInfo( NAME, FlatMacLightLaf.class );
+	}
+
+	@Override
+	public String getName() {
+		return NAME;
+	}
+
+	@Override
+	public String getDescription() {
+		return "FlatLaf macOS Light Look and Feel";
+	}
+
+	@Override
+	public boolean isDark() {
+		return false;
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatArrowButton.java

@@ -25,6 +25,7 @@ import java.awt.Graphics2D;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import javax.swing.JComponent;
+import javax.swing.SwingUtilities;
 import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicArrowButton;
 
@@ -48,8 +49,10 @@ public class FlatArrowButton
 	protected Color pressedBackground;
 
 	private int arrowWidth = DEFAULT_ARROW_WIDTH;
+	private float arrowThickness = 1;
 	private float xOffset = 0;
 	private float yOffset = 0;
+	private boolean roundBorderAutoXOffset = true;
 
 	private boolean hover;
 	private boolean pressed;
@@ -82,14 +85,18 @@ public class FlatArrowButton
 
 				@Override
 				public void mousePressed( MouseEvent e ) {
-					pressed = true;
+					if( SwingUtilities.isLeftMouseButton( e ) ) {
-					repaint();
+						pressed = true;
+						repaint();
+					}
 				}
 
 				@Override
 				public void mouseReleased( MouseEvent e ) {
-					pressed = false;
+					if( SwingUtilities.isLeftMouseButton( e ) ) {
-					repaint();
+						pressed = false;
+						repaint();
+					}
 				}
 			} );
 		}
@@ -116,6 +123,16 @@ public class FlatArrowButton
 		this.arrowWidth = arrowWidth;
 	}
 
+	/** @since 3 */
+	public float getArrowThickness() {
+		return arrowThickness;
+	}
+
+	/** @since 3 */
+	public void setArrowThickness( float arrowThickness ) {
+		this.arrowThickness = arrowThickness;
+	}
+
 	protected boolean isHover() {
 		return hover;
 	}
@@ -140,6 +157,16 @@ public class FlatArrowButton
 		this.yOffset = yOffset;
 	}
 
+	/** @since 3 */
+	public boolean isRoundBorderAutoXOffset() {
+		return roundBorderAutoXOffset;
+	}
+
+	/** @since 3 */
+	public void setRoundBorderAutoXOffset( boolean roundBorderAutoXOffset ) {
+		this.roundBorderAutoXOffset = roundBorderAutoXOffset;
+	}
+
 	protected Color deriveBackground( Color background ) {
 		return background;
 	}
@@ -203,14 +230,17 @@ public class FlatArrowButton
 	}
 
 	protected void paintArrow( Graphics2D g ) {
-		boolean vert = (direction == NORTH || direction == SOUTH);
 		int x = 0;
 
 		// move arrow for round borders
-		Container parent = getParent();
+		if( isRoundBorderAutoXOffset() ) {
-		if( vert && parent instanceof JComponent && FlatUIUtils.hasRoundBorder( (JComponent) parent ) )
+			Container parent = getParent();
-			x -= scale( parent.getComponentOrientation().isLeftToRight() ? 1 : -1 );
+			boolean vert = (direction == NORTH || direction == SOUTH);
+			if( vert && parent instanceof JComponent && FlatUIUtils.hasRoundBorder( (JComponent) parent ) )
+				x -= scale( parent.getComponentOrientation().isLeftToRight() ? 1 : -1 );
+		}
 
-		FlatUIUtils.paintArrow( g, x, 0, getWidth(), getHeight(), getDirection(), chevron, getArrowWidth(), getXOffset(), getYOffset() );
+		FlatUIUtils.paintArrow( g, x, 0, getWidth(), getHeight(), getDirection(), chevron,
+			getArrowWidth(), getArrowThickness(), getXOffset(), getYOffset() );
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatBorder.java

@@ -101,6 +101,12 @@ public class FlatBorder
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
 		Graphics2D g2 = (Graphics2D) g.create();

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatButtonUI.java

@@ -20,6 +20,7 @@ import static com.formdev.flatlaf.FlatClientProperties.*;
 import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Color;
 import java.awt.Component;
+import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.Font;
 import java.awt.FontMetrics;
@@ -42,10 +43,13 @@ import javax.swing.JTextField;
 import javax.swing.JToggleButton;
 import javax.swing.JToolBar;
 import javax.swing.LookAndFeel;
+import javax.swing.SwingConstants;
 import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
+import javax.swing.event.ChangeEvent;
 import javax.swing.plaf.ButtonUI;
 import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.ToolBarUI;
 import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicButtonListener;
 import javax.swing.plaf.basic.BasicButtonUI;
@@ -77,20 +81,27 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Button.startBackground			Color	optional; if set, a gradient paint is used and Button.background is ignored
  * @uiDefault Button.endBackground				Color	optional; if set, a gradient paint is used
  * @uiDefault Button.focusedBackground			Color	optional
+ * @uiDefault Button.focusedForeground			Color	optional
  * @uiDefault Button.hoverBackground			Color	optional
+ * @uiDefault Button.hoverForeground			Color	optional
  * @uiDefault Button.pressedBackground			Color	optional
+ * @uiDefault Button.pressedForeground			Color	optional
  * @uiDefault Button.selectedBackground			Color
  * @uiDefault Button.selectedForeground			Color
  * @uiDefault Button.disabledBackground			Color	optional
  * @uiDefault Button.disabledText				Color
  * @uiDefault Button.disabledSelectedBackground	Color
+ * @uiDefault Button.disabledSelectedForeground	Color	optional
  * @uiDefault Button.default.background			Color
  * @uiDefault Button.default.startBackground	Color	optional; if set, a gradient paint is used and Button.default.background is ignored
  * @uiDefault Button.default.endBackground		Color	optional; if set, a gradient paint is used
  * @uiDefault Button.default.foreground			Color
  * @uiDefault Button.default.focusedBackground	Color	optional
+ * @uiDefault Button.default.focusedForeground	Color	optional
  * @uiDefault Button.default.hoverBackground	Color	optional
+ * @uiDefault Button.default.hoverForeground	Color	optional
  * @uiDefault Button.default.pressedBackground	Color	optional
+ * @uiDefault Button.default.pressedForeground	Color	optional
  * @uiDefault Button.default.boldText			boolean
  * @uiDefault Button.paintShadow				boolean	default is false
  * @uiDefault Button.shadowWidth				int		default is 2
@@ -98,8 +109,13 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Button.default.shadowColor		Color	optional
  * @uiDefault Button.toolbar.spacingInsets		Insets
  * @uiDefault Button.toolbar.hoverBackground	Color
+ * @uiDefault Button.toolbar.hoverForeground	Color	optional
  * @uiDefault Button.toolbar.pressedBackground	Color
+ * @uiDefault Button.toolbar.pressedForeground	Color	optional
  * @uiDefault Button.toolbar.selectedBackground	Color
+ * @uiDefault Button.toolbar.selectedForeground	Color	optional
+ * @uiDefault Button.toolbar.disabledSelectedBackground	Color	optional
+ * @uiDefault Button.toolbar.disabledSelectedForeground	Color	optional
  *
  * @author Karl Tauber
  */
@@ -116,20 +132,27 @@ public class FlatButtonUI
 	protected Color startBackground;
 	protected Color endBackground;
 	@Styleable protected Color focusedBackground;
+	/** @since 2.3 */ @Styleable protected Color focusedForeground;
 	@Styleable protected Color hoverBackground;
+	/** @since 2.3 */ @Styleable protected Color hoverForeground;
 	@Styleable protected Color pressedBackground;
+	/** @since 2.3 */ @Styleable protected Color pressedForeground;
 	@Styleable protected Color selectedBackground;
 	@Styleable protected Color selectedForeground;
 	@Styleable protected Color disabledBackground;
 	@Styleable protected Color disabledText;
 	@Styleable protected Color disabledSelectedBackground;
+	/** @since 2.3 */ @Styleable protected Color disabledSelectedForeground;
 
 	@Styleable(dot=true) protected Color defaultBackground;
 	protected Color defaultEndBackground;
 	@Styleable(dot=true) protected Color defaultForeground;
 	@Styleable(dot=true) protected Color defaultFocusedBackground;
+	/** @since 2.3 */ @Styleable(dot=true) protected Color defaultFocusedForeground;
 	@Styleable(dot=true) protected Color defaultHoverBackground;
+	/** @since 2.3 */ @Styleable(dot=true) protected Color defaultHoverForeground;
 	@Styleable(dot=true) protected Color defaultPressedBackground;
+	/** @since 2.3 */ @Styleable(dot=true) protected Color defaultPressedForeground;
 	@Styleable(dot=true) protected boolean defaultBoldText;
 
 	@Styleable protected boolean paintShadow;
@@ -138,8 +161,13 @@ public class FlatButtonUI
 	@Styleable(dot=true) protected Color defaultShadowColor;
 
 	@Styleable(dot=true) protected Color toolbarHoverBackground;
+	/** @since 2.3 */ @Styleable(dot=true) protected Color toolbarHoverForeground;
 	@Styleable(dot=true) protected Color toolbarPressedBackground;
+	/** @since 2.3 */ @Styleable(dot=true) protected Color toolbarPressedForeground;
 	@Styleable(dot=true) protected Color toolbarSelectedBackground;
+	/** @since 2.3 */ @Styleable(dot=true) protected Color toolbarSelectedForeground;
+	/** @since 2.3 */ @Styleable(dot=true) protected Color toolbarDisabledSelectedBackground;
+	/** @since 2.3 */ @Styleable(dot=true) protected Color toolbarDisabledSelectedForeground;
 
 	// only used via styling (not in UI defaults, but has likewise client properties)
 	/** @since 2 */ @Styleable protected String buttonType;
@@ -156,7 +184,7 @@ public class FlatButtonUI
 	private AtomicBoolean borderShared;
 
 	public static ComponentUI createUI( JComponent c ) {
-		return FlatUIUtils.canUseSharedUI( c )
+		return FlatUIUtils.canUseSharedUI( c ) && !FlatUIUtils.needsLightAWTPeer( c )
 			? FlatUIUtils.createSharedUI( FlatButtonUI.class, () -> new FlatButtonUI( true ) )
 			: new FlatButtonUI( false );
 	}
@@ -168,6 +196,13 @@ public class FlatButtonUI
 
 	@Override
 	public void installUI( JComponent c ) {
+		if( FlatUIUtils.needsLightAWTPeer( c ) )
+			FlatUIUtils.runWithLightAWTPeerUIDefaults( () -> installUIImpl( c ) );
+		else
+			installUIImpl( c );
+	}
+
+	private void installUIImpl( JComponent c ) {
 		super.installUI( c );
 
 		installStyle( (AbstractButton) c );
@@ -189,20 +224,27 @@ public class FlatButtonUI
 			startBackground = UIManager.getColor( prefix + "startBackground" );
 			endBackground = UIManager.getColor( prefix + "endBackground" );
 			focusedBackground = UIManager.getColor( prefix + "focusedBackground" );
+			focusedForeground = UIManager.getColor( prefix + "focusedForeground" );
 			hoverBackground = UIManager.getColor( prefix + "hoverBackground" );
+			hoverForeground = UIManager.getColor( prefix + "hoverForeground" );
 			pressedBackground = UIManager.getColor( prefix + "pressedBackground" );
+			pressedForeground = UIManager.getColor( prefix + "pressedForeground" );
 			selectedBackground = UIManager.getColor( prefix + "selectedBackground" );
 			selectedForeground = UIManager.getColor( prefix + "selectedForeground" );
 			disabledBackground = UIManager.getColor( prefix + "disabledBackground" );
 			disabledText = UIManager.getColor( prefix + "disabledText" );
 			disabledSelectedBackground = UIManager.getColor( prefix + "disabledSelectedBackground" );
+			disabledSelectedForeground = UIManager.getColor( prefix + "disabledSelectedForeground" );
 
 			defaultBackground = FlatUIUtils.getUIColor( "Button.default.startBackground", "Button.default.background" );
 			defaultEndBackground = UIManager.getColor( "Button.default.endBackground" );
 			defaultForeground = UIManager.getColor( "Button.default.foreground" );
 			defaultFocusedBackground = UIManager.getColor( "Button.default.focusedBackground" );
+			defaultFocusedForeground = UIManager.getColor( "Button.default.focusedForeground" );
 			defaultHoverBackground = UIManager.getColor( "Button.default.hoverBackground" );
+			defaultHoverForeground = UIManager.getColor( "Button.default.hoverForeground" );
 			defaultPressedBackground = UIManager.getColor( "Button.default.pressedBackground" );
+			defaultPressedForeground = UIManager.getColor( "Button.default.pressedForeground" );
 			defaultBoldText = UIManager.getBoolean( "Button.default.boldText" );
 
 			paintShadow = UIManager.getBoolean( "Button.paintShadow" );
@@ -211,8 +253,13 @@ public class FlatButtonUI
 			defaultShadowColor = UIManager.getColor( "Button.default.shadowColor" );
 
 			toolbarHoverBackground = UIManager.getColor( prefix + "toolbar.hoverBackground" );
+			toolbarHoverForeground = UIManager.getColor( prefix + "toolbar.hoverForeground" );
 			toolbarPressedBackground = UIManager.getColor( prefix + "toolbar.pressedBackground" );
+			toolbarPressedForeground = UIManager.getColor( prefix + "toolbar.pressedForeground" );
 			toolbarSelectedBackground = UIManager.getColor( prefix + "toolbar.selectedBackground" );
+			toolbarSelectedForeground = UIManager.getColor( prefix + "toolbar.selectedForeground" );
+			toolbarDisabledSelectedBackground = UIManager.getColor( prefix + "toolbar.disabledSelectedBackground" );
+			toolbarDisabledSelectedForeground = UIManager.getColor( prefix + "toolbar.disabledSelectedForeground" );
 
 			helpButtonIcon = UIManager.getIcon( "HelpButton.icon" );
 			defaultMargin = UIManager.getInsets( prefix + "margin" );
@@ -329,6 +376,18 @@ public class FlatButtonUI
 		return infos;
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		if( key.startsWith( "help." ) ) {
+			return (helpButtonIcon instanceof FlatHelpButtonIcon)
+				? ((FlatHelpButtonIcon)helpButtonIcon).getStyleableValue( key.substring( "help.".length() ) )
+				: null;
+		}
+
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, c.getBorder(), key );
+	}
+
 	static boolean isContentAreaFilled( Component c ) {
 		return !(c instanceof AbstractButton) || ((AbstractButton)c).isContentAreaFilled();
 	}
@@ -494,6 +553,23 @@ public class FlatButtonUI
 		super.paint( FlatLabelUI.createGraphicsHTMLTextYCorrection( g, c ), c );
 	}
 
+	@Override
+	protected void paintIcon( Graphics g, JComponent c, Rectangle iconRect ) {
+		// correct icon location when using bold font for default button
+		int xOffset = defaultBoldPlainWidthDiff( c ) / 2;
+		if( xOffset > 0 ) {
+			boolean ltr = c.getComponentOrientation().isLeftToRight();
+			switch( ((AbstractButton)c).getHorizontalTextPosition() ) {
+				case SwingConstants.RIGHT:    iconRect.x -= xOffset; break;
+				case SwingConstants.LEFT:     iconRect.x += xOffset; break;
+				case SwingConstants.TRAILING: iconRect.x -= ltr ? xOffset : -xOffset; break;
+				case SwingConstants.LEADING:  iconRect.x += ltr ? xOffset : -xOffset; break;
+			}
+		}
+
+		super.paintIcon( g, c, iconRect );
+	}
+
 	@Override
 	protected void paintText( Graphics g, AbstractButton b, Rectangle textRect, String text ) {
 		if( isHelpButton( b ) )
@@ -514,6 +590,8 @@ public class FlatButtonUI
 	}
 
 	public static void paintText( Graphics g, AbstractButton b, Rectangle textRect, String text, Color foreground ) {
+		if(foreground == null)
+			foreground=Color.red;
 		FontMetrics fm = b.getFontMetrics( b.getFont() );
 		int mnemonicIndex = FlatLaf.isShowMnemonics() ? b.getDisplayedMnemonicIndex() : -1;
 
@@ -527,11 +605,14 @@ public class FlatButtonUI
 
 		// selected state
 		if( ((AbstractButton)c).isSelected() ) {
-			// in toolbar use same background colors for disabled and enabled because
+			// in toolbar, if toolbarDisabledSelectedBackground is null,
+			// use same background colors for disabled and enabled because
 			// we assume that toolbar icon is shown disabled
 			return buttonStateColor( c,
 				toolBarButton ? toolbarSelectedBackground : selectedBackground,
-				toolBarButton ? toolbarSelectedBackground : disabledSelectedBackground,
+				toolBarButton
+					? (toolbarDisabledSelectedBackground != null ? toolbarDisabledSelectedBackground : toolbarSelectedBackground)
+					: disabledSelectedBackground,
 				null,
 				null,
 				toolBarButton ? toolbarPressedBackground : pressedBackground );
@@ -558,6 +639,9 @@ public class FlatButtonUI
 	}
 
 	protected Color getBackgroundBase( JComponent c, boolean def ) {
+		if( FlatUIUtils.isAWTPeer( c ) )
+			return background;
+
 		// use component background if explicitly set
 		Color bg = c.getBackground();
 		if( isCustomBackground( bg ) )
@@ -596,18 +680,48 @@ public class FlatButtonUI
 	}
 
 	protected Color getForeground( JComponent c ) {
-		if( !c.isEnabled() )
+		boolean toolBarButton = isToolBarButton( c ) || isBorderlessButton( c );
-			return disabledText;
 
-		if( ((AbstractButton)c).isSelected() && !(isToolBarButton( c ) || isBorderlessButton( c )) )
+		// selected state
-			return selectedForeground;
+		if( ((AbstractButton)c).isSelected() ) {
+			return buttonStateColor( c,
+				toolBarButton
+					? (toolbarSelectedForeground != null ? toolbarSelectedForeground : c.getForeground())
+					: selectedForeground,
+				toolBarButton
+					? (toolbarDisabledSelectedForeground != null ? toolbarDisabledSelectedForeground : disabledText)
+					: (disabledSelectedForeground != null ? disabledSelectedForeground : disabledText),
+				null,
+				null,
+				toolBarButton ? toolbarPressedForeground : pressedForeground );
+		}
 
+		// toolbar button
+		if( toolBarButton ) {
+			return buttonStateColor( c,
+				c.getForeground(),
+				disabledText,
+				null,
+				toolbarHoverForeground,
+				toolbarPressedForeground );
+		}
+
+		boolean def = isDefaultButton( c );
+		return buttonStateColor( c,
+			getForegroundBase( c, def ),
+			disabledText,
+			isCustomForeground( c.getForeground() ) ? null : (def ? defaultFocusedForeground : focusedForeground),
+			def ? defaultHoverForeground : hoverForeground,
+			def ? defaultPressedForeground : pressedForeground );
+	}
+
+	/** @since 2.3 */
+	protected Color getForegroundBase( JComponent c, boolean def ) {
 		// use component foreground if explicitly set
 		Color fg = c.getForeground();
 		if( isCustomForeground( fg ) )
 			return fg;
 
-		boolean def = isDefaultButton( c );
 		return def ? defaultForeground : fg;
 	}
 
@@ -624,6 +738,9 @@ public class FlatButtonUI
 		if( prefSize == null )
 			return null;
 
+		// increase width when using bold font for default button
+		prefSize.width += defaultBoldPlainWidthDiff( c );
+
 		// make square or apply minimum width/height
 		boolean isIconOnlyOrSingleCharacter = isIconOnlyOrSingleCharacterButton( c );
 		if( clientPropertyBoolean( c, SQUARE_SIZE, squareSize ) ) {
@@ -644,6 +761,23 @@ public class FlatButtonUI
 		return prefSize;
 	}
 
+	private int defaultBoldPlainWidthDiff( JComponent c ) {
+		if( defaultBoldText && isDefaultButton( c ) && c.getFont() instanceof UIResource ) {
+			String text = ((AbstractButton)c).getText();
+			if( text == null || text.isEmpty() )
+				return 0;
+
+			Font font = c.getFont();
+			Font boldFont = font.deriveFont( Font.BOLD );
+			int boldWidth = c.getFontMetrics( boldFont ).stringWidth( text );
+			int plainWidth = c.getFontMetrics( font ).stringWidth( text );
+			if( boldWidth > plainWidth )
+				return boldWidth - plainWidth;
+		}
+
+		return 0;
+	}
+
 	private boolean hasDefaultMargins( JComponent c ) {
 		Insets margin = ((AbstractButton)c).getMargin();
 		return margin instanceof UIResource && Objects.equals( margin, defaultMargin );
@@ -666,5 +800,20 @@ public class FlatButtonUI
 			super.propertyChange( e );
 			FlatButtonUI.this.propertyChange( b, e );
 		}
+
+		@Override
+		public void stateChanged( ChangeEvent e ) {
+			super.stateChanged( e );
+
+			// if button is in toolbar, repaint button groups
+			AbstractButton b = (AbstractButton) e.getSource();
+			Container parent = b.getParent();
+			if( parent instanceof JToolBar ) {
+				JToolBar toolBar = (JToolBar) parent;
+				ToolBarUI ui = toolBar.getUI();
+				if( ui instanceof FlatToolBarUI )
+					((FlatToolBarUI)ui).repaintButtonGroup( b );
+			}
+		}
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatCheckBoxMenuItemUI.java

@@ -16,18 +16,20 @@
 
 package com.formdev.flatlaf.ui;
 
-import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.beans.PropertyChangeListener;
+import java.lang.invoke.MethodHandles;
 import java.util.Map;
 import javax.swing.Icon;
 import javax.swing.JComponent;
 import javax.swing.LookAndFeel;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicCheckBoxMenuItemUI;
+import javax.swing.plaf.basic.BasicMenuItemUI;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableField;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableLookupProvider;
 import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
-import com.formdev.flatlaf.ui.FlatStylingSupport.UnknownStyleException;
 import com.formdev.flatlaf.util.LoggingFacade;
 
 /**
@@ -58,9 +60,15 @@ import com.formdev.flatlaf.util.LoggingFacade;
  *
  * @author Karl Tauber
  */
+@StyleableField( cls=BasicMenuItemUI.class, key="selectionBackground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="selectionForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="disabledForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="acceleratorForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="acceleratorSelectionForeground" )
+
 public class FlatCheckBoxMenuItemUI
 	extends BasicCheckBoxMenuItemUI
-	implements StyleableUI
+	implements StyleableUI, StyleableLookupProvider
 {
 	private FlatMenuItemRenderer renderer;
 	private Map<String, Object> oldStyleValues;
@@ -119,29 +127,27 @@ public class FlatCheckBoxMenuItemUI
 
 	/** @since 2 */
 	protected Object applyStyleProperty( String key, Object value ) {
-		try {
+		return FlatMenuItemUI.applyStyleProperty( menuItem, this, renderer, key, value );
-			return renderer.applyStyleProperty( key, value );
-		} catch ( UnknownStyleException ex ) {
-			// ignore
-		}
-
-		Object oldValue;
-		switch( key ) {
-			// BasicMenuItemUI
-			case "selectionBackground": oldValue = selectionBackground; selectionBackground = (Color) value; return oldValue;
-			case "selectionForeground": oldValue = selectionForeground; selectionForeground = (Color) value; return oldValue;
-			case "disabledForeground": oldValue = disabledForeground; disabledForeground = (Color) value; return oldValue;
-			case "acceleratorForeground": oldValue = acceleratorForeground; acceleratorForeground = (Color) value; return oldValue;
-			case "acceleratorSelectionForeground": oldValue = acceleratorSelectionForeground; acceleratorSelectionForeground = (Color) value; return oldValue;
-		}
-
-		return FlatStylingSupport.applyToAnnotatedObjectOrComponent( this, menuItem, key, value );
 	}
 
 	/** @since 2 */
 	@Override
 	public Map<String, Class<?>> getStyleableInfos( JComponent c ) {
-		return FlatMenuItemUI.getStyleableInfos( renderer );
+		return FlatMenuItemUI.getStyleableInfos( this, renderer );
+	}
+
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatMenuItemUI.getStyleableValue( this, renderer, key );
+	}
+
+	/** @since 2.5 */
+	@Override
+	public MethodHandles.Lookup getLookupForStyling() {
+		// MethodHandles.lookup() is caller sensitive and must be invoked in this class,
+		// otherwise it is not possible to access protected fields in JRE superclass
+		return MethodHandles.lookup();
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatCheckBoxUI.java

@@ -43,7 +43,7 @@ public class FlatCheckBoxUI
 	extends FlatRadioButtonUI
 {
 	public static ComponentUI createUI( JComponent c ) {
-		return FlatUIUtils.canUseSharedUI( c )
+		return FlatUIUtils.canUseSharedUI( c ) && !FlatUIUtils.needsLightAWTPeer( c )
 			? FlatUIUtils.createSharedUI( FlatCheckBoxUI.class, () -> new FlatCheckBoxUI( true ) )
 			: new FlatCheckBoxUI( false );
 	}

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatComboBoxUI.java

@@ -42,6 +42,7 @@ import java.awt.event.MouseEvent;
 import java.awt.event.MouseListener;
 import java.awt.geom.Rectangle2D;
 import java.beans.PropertyChangeListener;
+import java.lang.invoke.MethodHandles;
 import java.util.Map;
 import java.util.concurrent.atomic.AtomicBoolean;
 import javax.swing.AbstractAction;
@@ -69,7 +70,10 @@ import javax.swing.plaf.basic.BasicComboBoxUI;
 import javax.swing.plaf.basic.BasicComboPopup;
 import javax.swing.plaf.basic.ComboPopup;
 import javax.swing.text.JTextComponent;
+import com.formdev.flatlaf.icons.FlatCheckBoxMenuItemIcon;
 import com.formdev.flatlaf.ui.FlatStylingSupport.Styleable;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableField;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableLookupProvider;
 import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
 import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.SystemInfo;
@@ -86,12 +90,17 @@ import com.formdev.flatlaf.util.SystemInfo;
  * @uiDefault ComboBox.padding					Insets
  * @uiDefault ComboBox.squareButton				boolean	default is true
  *
+ * <!-- BasicComboPopup -->
+ *
+ * @uiDefault ComboBox.selectionBackground		Color
+ * @uiDefault ComboBox.selectionForeground		Color
+ *
  * <!-- FlatComboBoxUI -->
  *
  * @uiDefault ComboBox.minimumWidth				int
  * @uiDefault ComboBox.editorColumns			int
  * @uiDefault ComboBox.maximumRowCount			int
- * @uiDefault ComboBox.buttonStyle				String	auto (default), button or none
+ * @uiDefault ComboBox.buttonStyle				String	auto (default), button, mac or none
  * @uiDefault Component.arrowType				String	chevron (default) or triangle
  * @uiDefault Component.isIntelliJTheme			boolean
  * @uiDefault ComboBox.editableBackground		Color	optional; defaults to ComboBox.background
@@ -109,12 +118,17 @@ import com.formdev.flatlaf.util.SystemInfo;
  * @uiDefault ComboBox.buttonHoverArrowColor	Color
  * @uiDefault ComboBox.buttonPressedArrowColor	Color
  * @uiDefault ComboBox.popupBackground			Color	optional
+ * @uiDefault ComboBox.popupInsets				Insets
+ * @uiDefault ComboBox.selectionInsets			Insets
+ * @uiDefault ComboBox.selectionArc				int
  *
  * @author Karl Tauber
  */
+@StyleableField( cls=BasicComboBoxUI.class, key="padding" )
+
 public class FlatComboBoxUI
 	extends BasicComboBoxUI
-	implements StyleableUI
+	implements StyleableUI, StyleableLookupProvider
 {
 	@Styleable protected int minimumWidth;
 	@Styleable protected int editorColumns;
@@ -122,6 +136,7 @@ public class FlatComboBoxUI
 	@Styleable protected String arrowType;
 	protected boolean isIntelliJTheme;
 
+	private Color background;
 	@Styleable protected Color editableBackground;
 	@Styleable protected Color focusedBackground;
 	@Styleable protected Color disabledBackground;
@@ -139,6 +154,9 @@ public class FlatComboBoxUI
 	@Styleable protected Color buttonPressedArrowColor;
 
 	@Styleable protected Color popupBackground;
+	/** @since 3 */ @Styleable protected Insets popupInsets;
+	/** @since 3 */ @Styleable protected Insets selectionInsets;
+	/** @since 3 */ @Styleable protected int selectionArc;
 
 	private MouseListener hoverListener;
 	protected boolean hover;
@@ -155,6 +173,13 @@ public class FlatComboBoxUI
 
 	@Override
 	public void installUI( JComponent c ) {
+		if( FlatUIUtils.needsLightAWTPeer( c ) )
+			FlatUIUtils.runWithLightAWTPeerUIDefaults( () -> installUIImpl( c ) );
+		else
+			installUIImpl( c );
+	}
+
+	private void installUIImpl( JComponent c ) {
 		super.installUI( c );
 
 		installStyle();
@@ -217,6 +242,7 @@ public class FlatComboBoxUI
 		arrowType = UIManager.getString( "Component.arrowType" );
 		isIntelliJTheme = UIManager.getBoolean( "Component.isIntelliJTheme" );
 
+		background = UIManager.getColor( "ComboBox.background" );
 		editableBackground = UIManager.getColor( "ComboBox.editableBackground" );
 		focusedBackground = UIManager.getColor( "ComboBox.focusedBackground" );
 		disabledBackground = UIManager.getColor( "ComboBox.disabledBackground" );
@@ -234,6 +260,9 @@ public class FlatComboBoxUI
 		buttonPressedArrowColor = UIManager.getColor( "ComboBox.buttonPressedArrowColor" );
 
 		popupBackground = UIManager.getColor( "ComboBox.popupBackground" );
+		popupInsets = UIManager.getInsets( "ComboBox.popupInsets" );
+		selectionInsets = UIManager.getInsets( "ComboBox.selectionInsets" );
+		selectionArc = UIManager.getInt( "ComboBox.selectionArc" );
 
 		// set maximumRowCount
 		int maximumRowCount = UIManager.getInt( "ComboBox.maximumRowCount" );
@@ -249,6 +278,7 @@ public class FlatComboBoxUI
 	protected void uninstallDefaults() {
 		super.uninstallDefaults();
 
+		background = null;
 		editableBackground = null;
 		focusedBackground = null;
 		disabledBackground = null;
@@ -288,11 +318,14 @@ public class FlatComboBoxUI
 					// limit button width to height of a raw combobox (without insets)
 					FontMetrics fm = comboBox.getFontMetrics( comboBox.getFont() );
 					int maxButtonWidth = fm.getHeight() + scale( padding.top ) + scale( padding.bottom );
+					int minButtonWidth = (maxButtonWidth * 3) / 4;
 
+					// make button square (except if width is limited)
 					Insets insets = getInsets();
-					int buttonWidth = Math.min( parent.getPreferredSize().height - insets.top - insets.bottom, maxButtonWidth );
+					int buttonWidth = Math.min( Math.max( parent.getHeight() - insets.top - insets.bottom, minButtonWidth ), maxButtonWidth );
+
 					if( buttonWidth != arrowButton.getWidth() ) {
-						// set width of arrow button to preferred height of combobox
+						// set width of arrow button
 						int xOffset = comboBox.getComponentOrientation().isLeftToRight()
 							? arrowButton.getWidth() - buttonWidth
 							: 0;
@@ -486,13 +519,6 @@ public class FlatComboBoxUI
 
 	/** @since 2 */
 	protected Object applyStyleProperty( String key, Object value ) {
-		// BasicComboBoxUI
-		if( key.equals( "padding" ) ) {
-			Object oldValue = padding;
-			padding = (Insets) value;
-			return oldValue;
-		}
-
 		if( borderShared == null )
 			borderShared = new AtomicBoolean( true );
 		return FlatStylingSupport.applyToAnnotatedObjectOrBorder( this, key, value, comboBox, borderShared );
@@ -501,11 +527,21 @@ public class FlatComboBoxUI
 	/** @since 2 */
 	@Override
 	public Map<String, Class<?>> getStyleableInfos( JComponent c ) {
-		Map<String, Class<?>> infos = new FlatStylingSupport.StyleableInfosMap<>();
+		return FlatStylingSupport.getAnnotatedStyleableInfos( this, comboBox.getBorder() );
-		infos.put( "padding", Insets.class );
+	}
-		FlatStylingSupport.collectAnnotatedStyleableInfos( this, infos );
+
-		FlatStylingSupport.collectStyleableInfos( comboBox.getBorder(), infos );
+	/** @since 2.5 */
-		return infos;
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, comboBox.getBorder(), key );
+	}
+
+	/** @since 2.5 */
+	@Override
+	public MethodHandles.Lookup getLookupForStyling() {
+		// MethodHandles.lookup() is caller sensitive and must be invoked in this class,
+		// otherwise it is not possible to access protected fields in JRE superclass
+		return MethodHandles.lookup();
 	}
 
 	@Override
@@ -533,7 +569,9 @@ public class FlatComboBoxUI
 		int height = c.getHeight();
 		int arrowX = arrowButton.getX();
 		int arrowWidth = arrowButton.getWidth();
-		boolean paintButton = (comboBox.isEditable() || "button".equals( buttonStyle )) && !"none".equals( buttonStyle );
+		boolean paintButton = (comboBox.isEditable() || "button".equals( buttonStyle )) &&
+			!"none".equals( buttonStyle ) &&
+			!isMacStyle();
 		boolean enabled = comboBox.isEnabled();
 		boolean isLeftToRight = comboBox.getComponentOrientation().isLeftToRight();
 
@@ -551,13 +589,21 @@ public class FlatComboBoxUI
 						: buttonBackground;
 				if( buttonColor != null ) {
 					g2.setColor( buttonColor );
-					Shape oldClip = g2.getClip();
+					if( isMacStyle() ) {
-					if( isLeftToRight )
+						Insets insets = comboBox.getInsets();
-						g2.clipRect( arrowX, 0, width - arrowX, height );
+						int gap = scale( 2 );
-					else
+						FlatUIUtils.paintComponentBackground( g2, arrowX + gap, insets.top + gap,
-						g2.clipRect( 0, 0, arrowX + arrowWidth, height );
+							arrowWidth - (gap * 2), height - insets.top - insets.bottom - (gap * 2),
-					FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
+							0, arc - focusWidth );
-					g2.setClip( oldClip );
+					} else {
+						Shape oldClip = g2.getClip();
+						if( isLeftToRight )
+							g2.clipRect( arrowX, 0, width - arrowX, height );
+						else
+							g2.clipRect( 0, 0, arrowX + arrowWidth, height );
+						FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
+						g2.setClip( oldClip );
+					}
 				}
 			}
 
@@ -603,7 +649,7 @@ public class FlatComboBoxUI
 
 		boolean shouldValidate = (c instanceof JPanel);
 
-		paddingBorder.install( c );
+		paddingBorder.install( c, 0 );
 		currentValuePane.paintComponent( g, c, comboBox, bounds.x, bounds.y, bounds.width, bounds.height, shouldValidate );
 		paddingBorder.uninstall();
 
@@ -618,6 +664,9 @@ public class FlatComboBoxUI
 
 	protected Color getBackground( boolean enabled ) {
 		if( enabled ) {
+			if( FlatUIUtils.isAWTPeer( comboBox ) )
+				return background;
+
 			Color background = comboBox.getBackground();
 
 			// always use explicitly set color
@@ -677,7 +726,7 @@ public class FlatComboBoxUI
 
 	@Override
 	protected Dimension getSizeForComponent( Component comp ) {
-		paddingBorder.install( comp );
+		paddingBorder.install( comp, 0 );
 		Dimension size = super.getSizeForComponent( comp );
 		paddingBorder.uninstall();
 		return size;
@@ -693,6 +742,10 @@ public class FlatComboBoxUI
 		return parentParent != null && !comboBox.getBackground().equals( parentParent.getBackground() );
 	}
 
+	private boolean isMacStyle() {
+		return "mac".equals( buttonStyle );
+	}
+
 	/** @since 1.3 */
 	public static boolean isPermanentFocusOwner( JComboBox<?> comboBox ) {
 		if( comboBox.isEditable() ) {
@@ -727,6 +780,21 @@ public class FlatComboBoxUI
 				buttonHoverArrowColor, null, buttonPressedArrowColor, null );
 		}
 
+		@Override
+		public int getArrowWidth() {
+			return isMacStyle() ? (getWidth() % 2 == 0 ? 6 : 7) : super.getArrowWidth();
+		}
+
+		@Override
+		public float getArrowThickness() {
+			return isMacStyle() ? 1.5f : super.getArrowThickness();
+		}
+
+		@Override
+		public boolean isRoundBorderAutoXOffset() {
+			return isMacStyle() ? false : super.isRoundBorderAutoXOffset();
+		}
+
 		@Override
 		protected boolean isHover() {
 			return super.isHover() || (!comboBox.isEditable() ? hover : false);
@@ -744,6 +812,20 @@ public class FlatComboBoxUI
 
 			return super.getArrowColor();
 		}
+
+		@Override
+		protected void paintArrow( Graphics2D g ) {
+			if( isMacStyle() && !comboBox.isEditable() ) {
+				// for style "mac", paint up and down arrows if combobox is not editable
+				int height = getHeight();
+				int h = Math.round( height / 2f );
+				FlatUIUtils.paintArrow( g, 0, 0, getWidth(), h, SwingConstants.NORTH, chevron,
+					getArrowWidth(), getArrowThickness(), getXOffset(), getYOffset() + 1.25f );
+				FlatUIUtils.paintArrow( g, 0, height - h, getWidth(), h, SwingConstants.SOUTH, chevron,
+					getArrowWidth(), getArrowThickness(), getXOffset(), getYOffset() - 1.25f );
+			} else
+				super.paintArrow( g );
+		}
 	}
 
 	//---- class FlatComboPopup -----------------------------------------------
@@ -778,12 +860,19 @@ public class FlatComboBoxUI
 				}
 			}
 
+			// for style "mac", add width of "checked item" icon
+			boolean isPopupOverComboBox = isPopupOverComboBox();
+			int selectedIndex = -1;
+			if( isPopupOverComboBox && (selectedIndex = comboBox.getSelectedIndex()) >= 0 )
+				displayWidth += MacCheckedItemIcon.INSTANCE.getIconWidth() + scale( CellPaddingBorder.MAC_STYLE_GAP );
+
 			// add width of vertical scroll bar
 			JScrollBar verticalScrollBar = scroller.getVerticalScrollBar();
 			if( verticalScrollBar != null )
 				displayWidth += verticalScrollBar.getPreferredSize().width;
 
 			// make popup wider if necessary
+			int pw0 = pw;
 			if( displayWidth > pw ) {
 				// limit popup width to screen width
 				GraphicsConfiguration gc = comboBox.getGraphicsConfiguration();
@@ -803,6 +892,30 @@ public class FlatComboBoxUI
 					px -= diff;
 			}
 
+			// for style "mac", place popup over combobox
+			Rectangle cellBounds;
+			if( isPopupOverComboBox && selectedIndex >= 0 &&
+				(cellBounds = list.getCellBounds( 0, 0 )) != null )
+			{
+				Insets comboBoxInsets = comboBox.getInsets();
+				Insets listInsets = list.getInsets();
+				Insets popupInsets = getInsets();
+
+				// position popup so that selected item is at same Y position as combobox
+				py -= (cellBounds.height * (selectedIndex + 1)) + comboBoxInsets.top + listInsets.top + popupInsets.top;
+
+				// position popup slightly to the left so that a small part of the right side of the combobox stays visible
+				int offset = Math.min( pw - pw0, MacCheckedItemIcon.INSTANCE.getIconWidth() ) + scale( 4 );
+				if( comboBox.getComponentOrientation().isLeftToRight() )
+					px -= offset + comboBoxInsets.right + listInsets.right;
+				else
+					px += offset + comboBoxInsets.left + listInsets.left;
+
+				// not invoking super.computePopupBounds() here to let
+				// JPopupMenu.adjustPopupLocationToFitScreen() fix the location if necessary
+				return new Rectangle( px, py, pw, ph );
+			}
+
 			return super.computePopupBounds( px, py, pw, ph );
 		}
 
@@ -813,17 +926,12 @@ public class FlatComboBoxUI
 			// make opaque to avoid that background shines thru border (e.g. at 150% scaling)
 			setOpaque( true );
 
-	        // set popup border
+			// set popup border
-	        // use non-UIResource to avoid that it is overwritten when making
+			// use non-UIResource to avoid that it is overwritten when making
-	        // popup visible (see JPopupMenu.setInvoker()) in theme editor preview
+			// popup visible (see JPopupMenu.setInvoker()) in theme editor preview
 			Border border = UIManager.getBorder( "PopupMenu.border" );
 			if( border != null )
 				setBorder( FlatUIUtils.nonUIResource( border ) );
-		}
-
-		@Override
-		protected void configureList() {
-			super.configureList();
 
 			list.setCellRenderer( new PopupListCellRenderer() );
 			updateStyle();
@@ -831,12 +939,21 @@ public class FlatComboBoxUI
 
 		void updateStyle() {
 			if( popupBackground != null )
-		        list.setBackground( popupBackground );
+				list.setBackground( popupBackground );
 
-	        // set popup background because it may shine thru when scaled (e.g. at 150%)
+			// set popup background because it may shine thru when scaled (e.g. at 150%)
-	        // use non-UIResource to avoid that it is overwritten when making
+			// use non-UIResource to avoid that it is overwritten when making
-	        // popup visible (see JPopupMenu.setInvoker()) in theme editor preview
+			// popup visible (see JPopupMenu.setInvoker()) in theme editor preview
-	        setBackground( FlatUIUtils.nonUIResource( list.getBackground() ) );
+			setBackground( FlatUIUtils.nonUIResource( list.getBackground() ) );
+
+			scroller.setViewportBorder( (popupInsets != null) ? new FlatEmptyBorder( popupInsets ) : null );
+			scroller.setOpaque( false );
+
+			if( list.getUI() instanceof FlatListUI ) {
+				FlatListUI ui = (FlatListUI) list.getUI();
+				ui.selectionInsets = selectionInsets;
+				ui.selectionArc = selectionArc;
+			}
 		}
 
 		@Override
@@ -878,6 +995,15 @@ public class FlatComboBoxUI
 			paddingBorder.uninstall();
 		}
 
+		private boolean isPopupOverComboBox() {
+			return isMacStyle() &&
+				!comboBox.isEditable() &&
+				comboBox.getItemCount() > 0 &&
+				comboBox.getItemCount() <= comboBox.getMaximumRowCount() &&
+				// for compatibility with Aqua Laf
+				!clientPropertyBoolean( comboBox, "JComboBox.isPopDown", false );
+		}
+
 		//---- class PopupListCellRenderer -----
 
 		private class PopupListCellRenderer
@@ -895,7 +1021,14 @@ public class FlatComboBoxUI
 				Component c = renderer.getListCellRendererComponent( list, value, index, isSelected, cellHasFocus );
 				c.applyComponentOrientation( comboBox.getComponentOrientation() );
 
-				paddingBorder.install( c );
+				// style "mac"
+				if( isPopupOverComboBox() && c instanceof JComponent ) {
+					int selectedIndex = comboBox.getSelectedIndex();
+					((JComponent)c).putClientProperty( CellPaddingBorder.KEY_MAC_STYLE_HINT,
+						(selectedIndex >= 0) ? (index == selectedIndex) : null );
+				}
+
+				paddingBorder.install( c, Math.round( FlatUIUtils.getBorderFocusWidth( comboBox ) ) );
 
 				return c;
 			}
@@ -911,13 +1044,20 @@ public class FlatComboBoxUI
 	 * which vertically aligns text in popup list with text in combobox.
 	 * <p>
 	 * The renderer border is painted on the outer side of this border.
+	 * <p>
+	 * For button style "mac", also used to increase insets on left side for
+	 * "checked item" icon and to paint "checked item" icon for selected combobox item.
 	 */
 	private static class CellPaddingBorder
 		extends AbstractBorder
 	{
+		static final String KEY_MAC_STYLE_HINT = "FlatLaf.internal.FlatComboBoxUI.macStyleHint";
+		static final int MAC_STYLE_GAP = 4;
+
 		private Insets padding;
 		private JComponent rendererComponent;
 		private Border rendererBorder;
+		private int focusWidth;
 
 		CellPaddingBorder( Insets padding ) {
 			this.padding = padding;
@@ -925,10 +1065,12 @@ public class FlatComboBoxUI
 
 		// using synchronized to avoid problems with code that modifies combo box
 		// (model, selection, etc) not on AWT thread (which should be not done)
-		synchronized void install( Component c ) {
+		synchronized void install( Component c, int focusWidth ) {
 			if( !(c instanceof JComponent) )
 				return;
 
+			this.focusWidth = focusWidth;
+
 			JComponent jc = (JComponent) c;
 			Border oldBorder = jc.getBorder();
 			if( oldBorder == this )
@@ -961,6 +1103,8 @@ public class FlatComboBoxUI
 			if( rendererComponent == null )
 				return;
 
+			rendererComponent.putClientProperty( KEY_MAC_STYLE_HINT, null );
+
 			if( rendererComponent.getBorder() == this )
 				rendererComponent.setBorder( rendererBorder );
 			rendererComponent = null;
@@ -982,6 +1126,24 @@ public class FlatComboBoxUI
 				insets.bottom = padding.bottom;
 				insets.right = padding.right;
 			}
+
+			// if used in popup list, add focus width for exact vertical alignment
+			// of text in popup list with text in combobox
+			insets.left += focusWidth;
+			insets.right += focusWidth;
+
+			// style "mac"
+			if( c instanceof JComponent ) {
+				Boolean macStyleHint = clientPropertyBooleanStrict( (JComponent) c, KEY_MAC_STYLE_HINT, null );
+				if( macStyleHint != null ) {
+					int indent = MacCheckedItemIcon.INSTANCE.getIconWidth() + scale( MAC_STYLE_GAP );
+					if( c.getComponentOrientation().isLeftToRight() )
+						insets.left += indent;
+					else
+						insets.right += indent;
+				}
+			}
+
 			return insets;
 		}
 
@@ -989,6 +1151,35 @@ public class FlatComboBoxUI
 		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
 			if( rendererBorder != null )
 				rendererBorder.paintBorder( c, g, x, y, width, height );
+
+			// style "mac"
+			if( c instanceof JComponent ) {
+				Boolean macStyleHint = clientPropertyBooleanStrict( (JComponent) c, KEY_MAC_STYLE_HINT, null );
+				if( macStyleHint == Boolean.TRUE ) {
+					// paint "checked item" icon
+					int ix = c.getComponentOrientation().isLeftToRight()
+						? x + scale( padding.left )
+						: x + width - scale( padding.right ) - MacCheckedItemIcon.INSTANCE.getIconWidth();
+					MacCheckedItemIcon.INSTANCE.paintIcon( c, g, ix, y + ((height - MacCheckedItemIcon.INSTANCE.getIconHeight()) / 2) );
+				}
+			}
+		}
+	}
+
+	//---- class MacCheckedItemIcon -------------------------------------------
+
+	/**
+	 * Use for style "mac" to mark checked item.
+	 */
+	private static class MacCheckedItemIcon
+		extends FlatCheckBoxMenuItemIcon
+	{
+		static MacCheckedItemIcon INSTANCE = new MacCheckedItemIcon();
+
+		@Override
+		protected void paintIcon( Component c, Graphics2D g2 ) {
+			g2.setColor( c.getForeground() );
+			paintCheckmark( g2 );
 		}
 	}
 

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatDropShadowBorder.java

@@ -107,6 +107,12 @@ public class FlatDropShadowBorder
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
 		if( shadowSize <= 0 )

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatEditorPaneUI.java

@@ -209,6 +209,12 @@ public class FlatEditorPaneUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	private void updateBackground() {
 		FlatTextFieldUI.updateBackground( getComponent(), background,
 			disabledBackground, inactiveBackground,

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatEmptyBorder.java

@@ -56,7 +56,7 @@ public class FlatEmptyBorder
 	protected static Insets scaleInsets( Component c, Insets insets,
 		int top, int left, int bottom, int right )
 	{
-		boolean leftToRight = left == right || c.getComponentOrientation().isLeftToRight();
+		boolean leftToRight = left == right || c == null || c.getComponentOrientation().isLeftToRight();
 		insets.left = scale( leftToRight ? left : right );
 		insets.top = scale( top );
 		insets.right = scale( leftToRight ? right : left );
@@ -76,4 +76,9 @@ public class FlatEmptyBorder
 		right = insets.right;
 		return oldInsets;
 	}
+
+	/** @since 2.5 */
+	public Insets getStyleableValue() {
+		return new Insets( top, left, bottom, right );
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatFileChooserUI.java

@@ -19,11 +19,21 @@ package com.formdev.flatlaf.ui;
 import java.awt.BorderLayout;
 import java.awt.Component;
 import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Image;
 import java.awt.Insets;
+import java.awt.LayoutManager;
+import java.awt.RenderingHints;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
 import java.io.File;
+import java.lang.reflect.Method;
+import java.util.function.Function;
 import javax.swing.AbstractButton;
 import javax.swing.Box;
 import javax.swing.BoxLayout;
+import javax.swing.ButtonGroup;
 import javax.swing.Icon;
 import javax.swing.ImageIcon;
 import javax.swing.JButton;
@@ -34,12 +44,16 @@ import javax.swing.JPanel;
 import javax.swing.JScrollPane;
 import javax.swing.JTable;
 import javax.swing.JToggleButton;
+import javax.swing.JToolBar;
+import javax.swing.SwingConstants;
 import javax.swing.UIManager;
+import javax.swing.filechooser.FileSystemView;
 import javax.swing.filechooser.FileView;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.metal.MetalFileChooserUI;
 import javax.swing.table.TableCellRenderer;
 import com.formdev.flatlaf.FlatClientProperties;
+import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.ScaledImageIcon;
 import com.formdev.flatlaf.util.SystemInfo;
 import com.formdev.flatlaf.util.UIScale;
@@ -133,12 +147,21 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault FileChooser.listViewActionLabelText				String
  * @uiDefault FileChooser.detailsViewActionLabelText			String
  *
+ * <!-- FlatFileChooserUI -->
+ *
+ * @uiDefault FileChooser.shortcuts.buttonSize					Dimension	optional; default is 84,64
+ * @uiDefault FileChooser.shortcuts.iconSize					Dimension	optional; default is 32,32
+ * @uiDefault FileChooser.shortcuts.filesFunction				Function&lt;File[], File[]&gt;
+ * @uiDefault FileChooser.shortcuts.displayNameFunction			Function&lt;File, String&gt;
+ * @uiDefault FileChooser.shortcuts.iconFunction				Function&lt;File, Icon&gt;
+ *
  * @author Karl Tauber
  */
 public class FlatFileChooserUI
 	extends MetalFileChooserUI
 {
 	private final FlatFileView fileView = new FlatFileView();
+	private FlatShortcutsPanel shortcutsPanel;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatFileChooserUI( (JFileChooser) c );
@@ -153,6 +176,25 @@ public class FlatFileChooserUI
 		super.installComponents( fc );
 
 		patchUI( fc );
+
+		if( !UIManager.getBoolean( "FileChooser.noPlacesBar" ) ) { // same as in Windows L&F
+			FlatShortcutsPanel panel = createShortcutsPanel( fc );
+			if( panel.getComponentCount() > 0 ) {
+				shortcutsPanel = panel;
+				fc.add( shortcutsPanel, BorderLayout.LINE_START );
+				fc.addPropertyChangeListener( shortcutsPanel );
+			}
+		}
+	}
+
+	@Override
+	public void uninstallComponents( JFileChooser fc ) {
+		super.uninstallComponents( fc );
+
+		if( shortcutsPanel != null ) {
+			fc.removePropertyChangeListener( shortcutsPanel );
+			shortcutsPanel = null;
+		}
 	}
 
 	private void patchUI( JFileChooser fc ) {
@@ -192,6 +234,27 @@ public class FlatFileChooserUI
 		} catch( ArrayIndexOutOfBoundsException ex ) {
 			// ignore
 		}
+
+		// put north, center and south components into a new panel so that
+		// the shortcuts panel (at west) gets full height
+		LayoutManager layout = fc.getLayout();
+		if( layout instanceof BorderLayout ) {
+			BorderLayout borderLayout = (BorderLayout) layout;
+			borderLayout.setHgap( 8 );
+
+			Component north = borderLayout.getLayoutComponent( BorderLayout.NORTH );
+			Component lineEnd = borderLayout.getLayoutComponent( BorderLayout.LINE_END );
+			Component center = borderLayout.getLayoutComponent( BorderLayout.CENTER );
+			Component south = borderLayout.getLayoutComponent( BorderLayout.SOUTH );
+			if( north != null && lineEnd != null && center != null && south != null ) {
+				JPanel p = new JPanel( new BorderLayout( 0, 11 ) );
+				p.add( north, BorderLayout.NORTH );
+				p.add( lineEnd, BorderLayout.LINE_END );
+				p.add( center, BorderLayout.CENTER );
+				p.add( south, BorderLayout.SOUTH );
+				fc.add( p, BorderLayout.CENTER );
+			}
+		}
 	}
 
 	@Override
@@ -250,9 +313,19 @@ public class FlatFileChooserUI
 		return p;
 	}
 
+	/** @since 2.3 */
+	protected FlatShortcutsPanel createShortcutsPanel( JFileChooser fc ) {
+		return new FlatShortcutsPanel( fc );
+	}
+
 	@Override
 	public Dimension getPreferredSize( JComponent c ) {
-		return UIScale.scale( super.getPreferredSize( c ) );
+		Dimension prefSize = super.getPreferredSize( c );
+		Dimension minSize = getMinimumSize( c );
+		int shortcutsPanelWidth = (shortcutsPanel != null) ? shortcutsPanel.getPreferredSize().width : 0;
+		return new Dimension(
+			Math.max( prefSize.width, minSize.width + shortcutsPanelWidth ),
+			Math.max( prefSize.height, minSize.height ) );
 	}
 
 	@Override
@@ -316,4 +389,234 @@ public class FlatFileChooserUI
 			return icon;
 		}
 	}
+
+	//---- class FlatShortcutsPanel -------------------------------------------
+
+	/** @since 2.3 */
+	public static class FlatShortcutsPanel
+		extends JToolBar
+		implements PropertyChangeListener
+	{
+		private final JFileChooser fc;
+
+		private final Dimension buttonSize;
+		private final Dimension iconSize;
+		private final Function<File[], File[]> filesFunction;
+		private final Function<File, String> displayNameFunction;
+		private final Function<File, Icon> iconFunction;
+
+		protected final File[] files;
+		protected final JToggleButton[] buttons;
+		protected final ButtonGroup buttonGroup;
+
+		@SuppressWarnings( "unchecked" )
+		public FlatShortcutsPanel( JFileChooser fc ) {
+			super( JToolBar.VERTICAL );
+			this.fc = fc;
+			setFloatable( false );
+
+			buttonSize = UIScale.scale( getUIDimension( "FileChooser.shortcuts.buttonSize", 84, 64 ) );
+			iconSize = getUIDimension( "FileChooser.shortcuts.iconSize", 32, 32 );
+
+			filesFunction = (Function<File[], File[]>) UIManager.get( "FileChooser.shortcuts.filesFunction" );
+			displayNameFunction = (Function<File, String>) UIManager.get( "FileChooser.shortcuts.displayNameFunction" );
+			iconFunction = (Function<File, Icon>) UIManager.get( "FileChooser.shortcuts.iconFunction" );
+
+			FileSystemView fsv = fc.getFileSystemView();
+			File[] files = getChooserShortcutPanelFiles( fsv );
+			if( filesFunction != null )
+				files = filesFunction.apply( files );
+			this.files = files;
+
+			// create toolbar buttons
+			buttons = new JToggleButton[files.length];
+			buttonGroup = new ButtonGroup();
+			for( int i = 0; i < files.length; i++ ) {
+				// wrap drive path
+				if( fsv.isFileSystemRoot( files[i] ) )
+					files[i] = fsv.createFileObject( files[i].getAbsolutePath() );
+
+				File file = files[i];
+				String name = getDisplayName( fsv, file );
+				Icon icon = getIcon( fsv, file );
+
+				// remove path from name
+				int lastSepIndex = name.lastIndexOf( File.separatorChar );
+				if( lastSepIndex >= 0 && lastSepIndex < name.length() - 1 )
+					name = name.substring( lastSepIndex + 1 );
+
+				// scale icon (if necessary)
+				if( icon instanceof ImageIcon )
+					icon = new ScaledImageIcon( (ImageIcon) icon, iconSize.width, iconSize.height );
+				else if( icon != null )
+					icon = new ShortcutIcon( icon, iconSize.width, iconSize.height );
+
+				// create button
+				JToggleButton button = createButton( name, icon );
+				button.addActionListener( e -> {
+					fc.setCurrentDirectory( file );
+				} );
+
+				add( button );
+				buttonGroup.add( button );
+				buttons[i] = button;
+			}
+
+			directoryChanged( fc.getCurrentDirectory() );
+		}
+
+		private Dimension getUIDimension( String key, int defaultWidth, int defaultHeight ) {
+			Dimension size = UIManager.getDimension( key );
+			if( size == null )
+				size = new Dimension( defaultWidth, defaultHeight );
+			return size;
+		}
+
+		protected JToggleButton createButton( String name, Icon icon ) {
+			JToggleButton button = new JToggleButton( name, icon );
+			button.setVerticalTextPosition( SwingConstants.BOTTOM );
+			button.setHorizontalTextPosition( SwingConstants.CENTER );
+			button.setAlignmentX( Component.CENTER_ALIGNMENT );
+			button.setIconTextGap( 0 );
+			button.setPreferredSize( buttonSize );
+			button.setMaximumSize( buttonSize );
+			return button;
+		}
+
+		protected File[] getChooserShortcutPanelFiles( FileSystemView fsv ) {
+			try {
+				if( SystemInfo.isJava_12_orLater ) {
+					Method m = fsv.getClass().getMethod( "getChooserShortcutPanelFiles" );
+					File[] files = (File[]) m.invoke( fsv );
+
+					// on macOS and Linux, files consists only of the user home directory
+					if( files.length == 1 && files[0].equals( new File( System.getProperty( "user.home" ) ) ) )
+						files = new File[0];
+
+					return files;
+				} else if( SystemInfo.isWindows ) {
+					Class<?> cls = Class.forName( "sun.awt.shell.ShellFolder" );
+					Method m = cls.getMethod( "get", String.class );
+					return (File[]) m.invoke( null, "fileChooserShortcutPanelFolders" );
+				}
+			} catch( IllegalAccessException ex ) {
+				// do not log because access may be denied via VM option '--illegal-access=deny'
+			} catch( Exception ex ) {
+				LoggingFacade.INSTANCE.logSevere( null, ex );
+			}
+
+			// fallback
+			return new File[0];
+		}
+
+		protected String getDisplayName( FileSystemView fsv, File file ) {
+			if( displayNameFunction != null ) {
+				String name = displayNameFunction.apply( file );
+				if( name != null )
+					return name;
+			}
+
+			return fsv.getSystemDisplayName( file );
+		}
+
+		protected Icon getIcon( FileSystemView fsv, File file ) {
+			if( iconFunction != null ) {
+				Icon icon = iconFunction.apply( file );
+				if( icon != null )
+					return icon;
+			}
+
+			// Java 17+ supports getting larger system icons
+			try {
+				if( SystemInfo.isJava_17_orLater ) {
+					Method m = fsv.getClass().getMethod( "getSystemIcon", File.class, int.class, int.class );
+					return (Icon) m.invoke( fsv, file, iconSize.width, iconSize.height );
+				} else if( iconSize.width > 16 || iconSize.height > 16 ) {
+					Class<?> cls = Class.forName( "sun.awt.shell.ShellFolder" );
+					if( cls.isInstance( file ) ) {
+						Method m = file.getClass().getMethod( "getIcon", boolean.class );
+						m.setAccessible( true );
+						Image image = (Image) m.invoke( file, true );
+						if( image != null )
+							return new ImageIcon( image );
+					}
+				}
+			} catch( IllegalAccessException ex ) {
+				// do not log because access may be denied via VM option '--illegal-access=deny'
+			} catch( Exception ex ) {
+				LoggingFacade.INSTANCE.logSevere( null, ex );
+			}
+
+			// get system icon in default size 16x16
+			return fsv.getSystemIcon( file );
+		}
+
+		protected void directoryChanged( File file ) {
+			if( file != null ) {
+				String absolutePath = file.getAbsolutePath();
+				for( int i = 0; i < files.length; i++ ) {
+					// also compare path because otherwise selecting "Documents"
+					// in "Look in" combobox would not select "Documents" shortcut item
+					if( files[i].equals( file ) || files[i].getAbsolutePath().equals( absolutePath ) ) {
+						buttons[i].setSelected( true );
+						return;
+					}
+				}
+			}
+
+			buttonGroup.clearSelection();
+		}
+
+		@Override
+		public void propertyChange( PropertyChangeEvent e ) {
+			switch( e.getPropertyName() ) {
+				case JFileChooser.DIRECTORY_CHANGED_PROPERTY:
+					directoryChanged( fc.getCurrentDirectory() );
+					break;
+			}
+		}
+	}
+
+	//---- class ShortcutIcon -------------------------------------------------
+
+	private static class ShortcutIcon
+		implements Icon
+	{
+		private final Icon icon;
+		private final int iconWidth;
+		private final int iconHeight;
+
+		ShortcutIcon( Icon icon, int iconWidth, int iconHeight ) {
+			this.icon = icon;
+			this.iconWidth = iconWidth;
+			this.iconHeight = iconHeight;
+		}
+
+		@Override
+		public void paintIcon( Component c, Graphics g, int x, int y ) {
+			Graphics2D g2 = (Graphics2D) g.create();
+			try {
+				// set rendering hint for the case that the icon is a bitmap (not used for vector icons)
+				g2.setRenderingHint( RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC );
+
+				double scale = (double) getIconWidth() / (double) icon.getIconWidth();
+				g2.translate( x, y );
+				g2.scale( scale, scale );
+
+				icon.paintIcon( c, g2, 0, 0 );
+			} finally {
+				g2.dispose();
+			}
+		}
+
+		@Override
+		public int getIconWidth() {
+			return UIScale.scale( iconWidth );
+		}
+
+		@Override
+		public int getIconHeight() {
+			return UIScale.scale( iconHeight );
+		}
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatInternalFrameUI.java

@@ -179,6 +179,12 @@ public class FlatInternalFrameUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this, frame.getBorder() );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, frame.getBorder(), key );
+	}
+
 	@Override
 	public void update( Graphics g, JComponent c ) {
 		// The internal frame actually should be opaque and fill its background,
@@ -253,6 +259,23 @@ public class FlatInternalFrameUI
 			return infos;
 		}
 
+		/** @since 2.5 */
+		@Override
+		public Object getStyleableValue( String key ) {
+			switch( key ) {
+				case "borderMargins": return getStyleableValue();
+
+				case "activeDropShadowColor": return activeDropShadowBorder.getStyleableValue( "shadowColor" );
+				case "activeDropShadowInsets": return activeDropShadowBorder.getStyleableValue( "shadowInsets" );
+				case "activeDropShadowOpacity": return activeDropShadowBorder.getStyleableValue( "shadowOpacity" );
+				case "inactiveDropShadowColor": return inactiveDropShadowBorder.getStyleableValue( "shadowColor" );
+				case "inactiveDropShadowInsets": return inactiveDropShadowBorder.getStyleableValue( "shadowInsets" );
+				case "inactiveDropShadowOpacity": return inactiveDropShadowBorder.getStyleableValue( "shadowOpacity" );
+			}
+
+			return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+		}
+
 		@Override
 		public Insets getBorderInsets( Component c, Insets insets ) {
 			if( c instanceof JInternalFrame && ((JInternalFrame)c).isMaximum() ) {

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatLabelUI.java

@@ -158,6 +158,12 @@ public class FlatLabelUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	/**
 	 * Checks whether text contains HTML tags that use "absolute-size" keywords
 	 * (e.g. "x-large") for font-size in default style sheet

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatListUI.java

@@ -17,20 +17,34 @@
 package com.formdev.flatlaf.ui;
 
 import java.awt.Color;
+import java.awt.Component;
 import java.awt.EventQueue;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
 import java.awt.Insets;
+import java.awt.Point;
+import java.awt.Rectangle;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
 import java.beans.PropertyChangeListener;
 import java.util.Map;
+import javax.swing.DefaultListCellRenderer;
 import javax.swing.JComponent;
+import javax.swing.JList;
+import javax.swing.ListCellRenderer;
+import javax.swing.ListModel;
+import javax.swing.ListSelectionModel;
 import javax.swing.UIManager;
+import javax.swing.event.ListSelectionListener;
 import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.basic.BasicComboBoxRenderer;
 import javax.swing.plaf.basic.BasicListUI;
 import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.ui.FlatStylingSupport.Styleable;
 import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
+import com.formdev.flatlaf.util.Graphics2DProxy;
 import com.formdev.flatlaf.util.LoggingFacade;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JList}.
@@ -59,6 +73,8 @@ import com.formdev.flatlaf.util.LoggingFacade;
  *
  * @uiDefault List.selectionInactiveBackground		Color
  * @uiDefault List.selectionInactiveForeground		Color
+ * @uiDefault List.selectionInsets					Insets
+ * @uiDefault List.selectionArc						int
  *
  * <!-- FlatListCellBorder -->
  *
@@ -76,6 +92,8 @@ public class FlatListUI
 	@Styleable protected Color selectionForeground;
 	@Styleable protected Color selectionInactiveBackground;
 	@Styleable protected Color selectionInactiveForeground;
+	/** @since 3 */ @Styleable protected Insets selectionInsets;
+	/** @since 3 */ @Styleable protected int selectionArc;
 
 	// for FlatListCellBorder
 	/** @since 2 */ @Styleable protected Insets cellMargins;
@@ -90,6 +108,13 @@ public class FlatListUI
 
 	@Override
 	public void installUI( JComponent c ) {
+		if( FlatUIUtils.needsLightAWTPeer( c ) )
+			FlatUIUtils.runWithLightAWTPeerUIDefaults( () -> installUIImpl( c ) );
+		else
+			installUIImpl( c );
+	}
+
+	private void installUIImpl( JComponent c ) {
 		super.installUI( c );
 
 		installStyle();
@@ -103,6 +128,8 @@ public class FlatListUI
 		selectionForeground = UIManager.getColor( "List.selectionForeground" );
 		selectionInactiveBackground = UIManager.getColor( "List.selectionInactiveBackground" );
 		selectionInactiveForeground = UIManager.getColor( "List.selectionInactiveForeground" );
+		selectionInsets = UIManager.getInsets( "List.selectionInsets" );
+		selectionArc = UIManager.getInt( "List.selectionArc" );
 
 		toggleSelectionColors();
 	}
@@ -161,6 +188,29 @@ public class FlatListUI
 		};
 	}
 
+	@Override
+	protected ListSelectionListener createListSelectionListener() {
+		ListSelectionListener superListener = super.createListSelectionListener();
+		return e -> {
+			superListener.valueChanged( e );
+
+			// for united rounded selection, repaint parts of the rows/columns that adjoin to the changed rows/columns
+			if( useUnitedRoundedSelection( true, true ) &&
+				!list.isSelectionEmpty() &&
+				(list.getMaxSelectionIndex() - list.getMinSelectionIndex()) >= 1 )
+			{
+				int size = list.getModel().getSize();
+				int firstIndex = Math.min( Math.max( e.getFirstIndex(), 0 ), size - 1 );
+				int lastIndex = Math.min( Math.max( e.getLastIndex(), 0 ), size - 1 );
+				Rectangle r = getCellBounds( list, firstIndex, lastIndex );
+				if( r != null ) {
+					int arc = (int) Math.ceil( UIScale.scale( selectionArc / 2f ) );
+					list.repaint( r.x - arc, r.y - arc, r.width + (arc * 2), r.height + (arc * 2) );
+				}
+			}
+		};
+	}
+
 	/** @since 2 */
 	protected void installStyle() {
 		try {
@@ -209,6 +259,12 @@ public class FlatListUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	/**
 	 * Toggle selection colors from focused to inactive and vice versa.
 	 *
@@ -234,4 +290,164 @@ public class FlatListUI
 				list.setSelectionForeground( selectionInactiveForeground );
 		}
 	}
+
+	@SuppressWarnings( "rawtypes" )
+	@Override
+	protected void paintCell( Graphics g, int row, Rectangle rowBounds, ListCellRenderer cellRenderer,
+		ListModel dataModel, ListSelectionModel selModel, int leadIndex )
+	{
+		boolean isSelected = selModel.isSelectedIndex( row );
+
+		// get renderer component
+		@SuppressWarnings( "unchecked" )
+		Component rendererComponent = cellRenderer.getListCellRendererComponent( list,
+			dataModel.getElementAt( row ), row, isSelected, list.hasFocus() && (row == leadIndex) );
+
+		//
+		boolean isFileList = Boolean.TRUE.equals( list.getClientProperty( "List.isFileList" ) );
+		int cx, cw;
+		if( isFileList ) {
+			// see BasicListUI.paintCell()
+			cw = Math.min( rowBounds.width, rendererComponent.getPreferredSize().width + 4 );
+			cx = list.getComponentOrientation().isLeftToRight()
+				? rowBounds.x
+				: rowBounds.x + (rowBounds.width - cw);
+		} else {
+			cx = rowBounds.x;
+			cw = rowBounds.width;
+		}
+
+		// rounded selection or selection insets
+		if( isSelected &&
+			!isFileList && // rounded selection is not supported for file list
+			(rendererComponent instanceof DefaultListCellRenderer ||
+			 rendererComponent instanceof BasicComboBoxRenderer) &&
+			(selectionArc > 0 ||
+			 (selectionInsets != null &&
+			  (selectionInsets.top != 0 || selectionInsets.left != 0 || selectionInsets.bottom != 0 || selectionInsets.right != 0))) )
+		{
+			// Because selection painting is done in the cell renderer, it would be
+			// necessary to require a FlatLaf specific renderer to implement rounded selection.
+			// Using a LaF specific renderer was avoided because often a custom renderer is
+			// already used in applications. Then either the rounded selection is not used,
+			// or the application has to be changed to extend a FlatLaf renderer.
+			//
+			// To solve this, a graphics proxy is used that paints rounded selection
+			// if row is selected and the renderer wants to fill the background.
+			class RoundedSelectionGraphics extends Graphics2DProxy {
+				// used to avoid endless loop in case that paintCellSelection() invokes
+				// g.fillRect() with full bounds (selectionInsets is 0,0,0,0)
+				private boolean inPaintSelection;
+
+				RoundedSelectionGraphics( Graphics delegate ) {
+					super( (Graphics2D) delegate );
+				}
+
+				@Override
+				public Graphics create() {
+					return new RoundedSelectionGraphics( super.create() );
+				}
+
+				@Override
+				public Graphics create( int x, int y, int width, int height ) {
+					return new RoundedSelectionGraphics( super.create( x, y, width, height ) );
+				}
+
+				@Override
+				public void fillRect( int x, int y, int width, int height ) {
+					if( !inPaintSelection &&
+						x == 0 && y == 0 && width == rowBounds.width && height == rowBounds.height &&
+						this.getColor() == rendererComponent.getBackground() )
+					{
+						inPaintSelection = true;
+						paintCellSelection( this, row, x, y, width, height );
+						inPaintSelection = false;
+					} else
+						super.fillRect( x, y, width, height );
+				}
+			}
+			g = new RoundedSelectionGraphics( g );
+		}
+
+		// paint renderer
+		rendererPane.paintComponent( g, rendererComponent, list, cx, rowBounds.y, cw, rowBounds.height, true );
+	}
+
+	/** @since 3 */
+	protected void paintCellSelection( Graphics g, int row, int x, int y, int width, int height ) {
+		float arcTopLeft, arcTopRight, arcBottomLeft, arcBottomRight;
+		arcTopLeft = arcTopRight = arcBottomLeft = arcBottomRight = UIScale.scale( selectionArc / 2f );
+
+		if( list.getLayoutOrientation() == JList.VERTICAL ) {
+			// layout orientation: VERTICAL
+			if( useUnitedRoundedSelection( true, false ) ) {
+				if( row > 0 && list.isSelectedIndex( row - 1 ) )
+					arcTopLeft = arcTopRight = 0;
+				if( row < list.getModel().getSize() - 1 && list.isSelectedIndex( row + 1 ) )
+					arcBottomLeft = arcBottomRight = 0;
+			}
+		} else {
+			// layout orientation: VERTICAL_WRAP or HORIZONTAL_WRAP
+			Rectangle r = null;
+			if( useUnitedRoundedSelection( true, false ) ) {
+				// vertical: check whether cells above or below are selected
+				r = getCellBounds( list, row, row );
+
+				int topIndex = locationToIndex( list, new Point( r.x, r.y - 1 ) );
+				int bottomIndex = locationToIndex( list, new Point( r.x, r.y + r.height ) );
+
+				if( topIndex >= 0 && topIndex != row && list.isSelectedIndex( topIndex ) )
+					arcTopLeft = arcTopRight = 0;
+				if( bottomIndex >= 0 && bottomIndex != row && list.isSelectedIndex( bottomIndex ) )
+					arcBottomLeft = arcBottomRight = 0;
+			}
+
+			if( useUnitedRoundedSelection( false, true ) ) {
+				// horizontal: check whether cells left or right are selected
+				if( r == null )
+					r = getCellBounds( list, row, row );
+
+				int leftIndex = locationToIndex( list, new Point( r.x - 1, r.y ) );
+				int rightIndex = locationToIndex( list, new Point( r.x + r.width, r.y ) );
+
+				// special handling for the case that last column contains less cells than the other columns
+				boolean ltr = list.getComponentOrientation().isLeftToRight();
+				if( !ltr && leftIndex >= 0 && leftIndex != row && leftIndex == locationToIndex( list, new Point( r.x - 1, r.y - 1 ) ) )
+					leftIndex = -1;
+				if( ltr && rightIndex >= 0 && rightIndex != row && rightIndex == locationToIndex( list, new Point( r.x + r.width, r.y - 1 ) ) )
+					rightIndex = -1;
+
+				if( leftIndex >= 0 && leftIndex != row && list.isSelectedIndex( leftIndex ) )
+					arcTopLeft = arcBottomLeft = 0;
+				if( rightIndex >= 0 && rightIndex != row && list.isSelectedIndex( rightIndex ) )
+					arcTopRight = arcBottomRight = 0;
+			}
+		}
+
+		FlatUIUtils.paintSelection( (Graphics2D) g, x, y, width, height,
+			UIScale.scale( selectionInsets ), arcTopLeft, arcTopRight, arcBottomLeft, arcBottomRight, 0 );
+	}
+
+	private boolean useUnitedRoundedSelection( boolean vertical, boolean horizontal ) {
+		return selectionArc > 0 &&
+			(selectionInsets == null ||
+			 (vertical && selectionInsets.top == 0 && selectionInsets.bottom == 0) ||
+			 (horizontal && selectionInsets.left == 0 && selectionInsets.right == 0));
+	}
+
+	/**
+	 * Paints a cell selection at the given coordinates.
+	 * The selection color must be set on the graphics context.
+	 * <p>
+	 * This method is intended for use in custom cell renderers.
+	 *
+	 * @since 3
+	 */
+	public static void paintCellSelection( JList<?> list, Graphics g, int row, int x, int y, int width, int height ) {
+		if( !(list.getUI() instanceof FlatListUI) )
+			return;
+
+		FlatListUI ui = (FlatListUI) list.getUI();
+		ui.paintCellSelection( g, row, x, y, width, height );
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuBarBorder.java

@@ -51,6 +51,12 @@ public class FlatMenuBarBorder
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
 		if( !showBottomSeparator( c ) )

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuBarUI.java

@@ -18,8 +18,10 @@ package com.formdev.flatlaf.ui;
 
 import java.awt.Color;
 import java.awt.Component;
+import java.awt.Container;
 import java.awt.Graphics;
 import java.awt.Insets;
+import java.awt.LayoutManager;
 import java.awt.Window;
 import java.awt.event.ActionEvent;
 import java.beans.PropertyChangeListener;
@@ -27,6 +29,7 @@ import java.util.Map;
 import java.util.concurrent.atomic.AtomicBoolean;
 import javax.swing.AbstractAction;
 import javax.swing.ActionMap;
+import javax.swing.BoxLayout;
 import javax.swing.JComponent;
 import javax.swing.JMenu;
 import javax.swing.JMenuBar;
@@ -40,11 +43,13 @@ import javax.swing.plaf.ActionMapUIResource;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicMenuBarUI;
+import javax.swing.plaf.basic.DefaultMenuLayout;
 import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.ui.FlatStylingSupport.Styleable;
 import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
 import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.SystemInfo;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JMenuBar}.
@@ -70,7 +75,12 @@ public class FlatMenuBarUI
 	/** @since 2 */ @Styleable protected Insets itemMargins;
 
 	// used in FlatMenuUI
+	/** @since 3 */ @Styleable protected Insets selectionInsets;
+	/** @since 3 */ @Styleable protected Insets selectionEmbeddedInsets;
+	/** @since 3 */ @Styleable protected int selectionArc = -1;
 	/** @since 2 */ @Styleable protected Color hoverBackground;
+	/** @since 2.5 */ @Styleable protected Color selectionBackground;
+	/** @since 2.5 */ @Styleable protected Color selectionForeground;
 	/** @since 2 */ @Styleable protected Color underlineSelectionBackground;
 	/** @since 2 */ @Styleable protected Color underlineSelectionColor;
 	/** @since 2 */ @Styleable protected int underlineSelectionHeight = -1;
@@ -100,6 +110,10 @@ public class FlatMenuBarUI
 		super.installDefaults();
 
 		LookAndFeel.installProperty( menuBar, "opaque", false );
+
+		LayoutManager layout = menuBar.getLayout();
+		if( layout == null || layout instanceof UIResource )
+			menuBar.setLayout( new FlatMenuBarLayout( menuBar ) );
 	}
 
 	@Override
@@ -165,6 +179,12 @@ public class FlatMenuBarUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this, menuBar.getBorder() );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, menuBar.getBorder(), key );
+	}
+
 	@Override
 	public void update( Graphics g, JComponent c ) {
 		// paint background
@@ -221,6 +241,130 @@ public class FlatMenuBarUI
 			rootPane.getWindowDecorationStyle() != JRootPane.NONE;
 	}
 
+	//---- class FlatMenuBarLayout --------------------------------------------
+
+	/**
+	 * @since 2.4
+	 */
+	protected static class FlatMenuBarLayout
+		extends DefaultMenuLayout
+	{
+		public FlatMenuBarLayout( Container target ) {
+			super( target, BoxLayout.LINE_AXIS );
+		}
+
+		@Override
+		public void layoutContainer( Container target ) {
+			super.layoutContainer( target );
+
+
+			// The only purpose of the code below is to make sure that a horizontal glue,
+			// which can be used to move window and displays the window title in embedded menu bar,
+			// is always visible within the menu bar bounds and has a minimum width.
+			// If this is not the case, the horizontal glue is made larger and
+			// components that are on the left side of the glue are made smaller.
+
+
+			// get root pane and check whether this menu bar is the root pane menu bar
+			JRootPane rootPane = SwingUtilities.getRootPane( target );
+			if( rootPane == null || rootPane.getJMenuBar() != target )
+				return;
+
+			// get title pane and check whether menu bar is embedded
+			FlatTitlePane titlePane = FlatRootPaneUI.getTitlePane( rootPane );
+			if( titlePane == null || !titlePane.isMenuBarEmbedded() )
+				return;
+
+			// check whether there is a horizontal glue (used for window title in embedded menu bar)
+			// and check minimum width of horizontal glue
+			Component horizontalGlue = titlePane.findHorizontalGlue( (JMenuBar) target );
+			int minTitleWidth = UIScale.scale( titlePane.titleMinimumWidth );
+			if( horizontalGlue != null && horizontalGlue.getWidth() < minTitleWidth ) {
+				// get index of glue component
+				int glueIndex = -1;
+				Component[] components = target.getComponents();
+				for( int i = components.length - 1; i >= 0; i-- ) {
+					if( components[i] == horizontalGlue ) {
+						glueIndex = i;
+						break;
+					}
+				}
+				if( glueIndex < 0 )
+					return; // should never happen
+
+				if( target.getComponentOrientation().isLeftToRight() ) {
+					// left-to-right
+
+					// make horizontal glue wider (minimum title width)
+					int offset = minTitleWidth - horizontalGlue.getWidth();
+					horizontalGlue.setSize( minTitleWidth, horizontalGlue.getHeight() );
+
+					// check whether glue is fully visible
+					int minGlueX = target.getWidth() - target.getInsets().right - minTitleWidth;
+					if( minGlueX < horizontalGlue.getX() ) {
+						// move glue to the left to make it fully visible
+						offset -= (horizontalGlue.getX() - minGlueX);
+						horizontalGlue.setLocation( minGlueX, horizontalGlue.getY() );
+
+						// shrink and move components that are on the left side of the glue
+						for( int i = glueIndex - 1; i >= 0; i-- ) {
+							Component c = components[i];
+							if( c.getX() > minGlueX ) {
+								// move component and set width to zero
+								c.setBounds( minGlueX, c.getY(), 0, c.getHeight() );
+							} else {
+								// reduce size of component
+								c.setSize( minGlueX - c.getX(), c.getHeight() );
+								break;
+							}
+						}
+					}
+
+					// move components that are on the right side of the glue
+					for( int i = glueIndex + 1; i < components.length; i++ ) {
+						Component c = components[i];
+						c.setLocation( c.getX() + offset, c.getY() );
+					}
+				} else {
+					// right-to-left
+
+					// make horizontal glue wider (minimum title width)
+					int offset = minTitleWidth - horizontalGlue.getWidth();
+					horizontalGlue.setBounds( horizontalGlue.getX() - offset, horizontalGlue.getY(),
+						minTitleWidth, horizontalGlue.getHeight() );
+
+					// check whether glue is fully visible
+					int minGlueX = target.getInsets().left;
+					if( minGlueX > horizontalGlue.getX() ) {
+						// move glue to the right to make it fully visible
+						offset -= (horizontalGlue.getX() - minGlueX);
+						horizontalGlue.setLocation( minGlueX, horizontalGlue.getY() );
+
+						// shrink and move components that are on the right side of the glue
+						int x = horizontalGlue.getX() + horizontalGlue.getWidth();
+						for( int i = glueIndex - 1; i >= 0; i-- ) {
+							Component c = components[i];
+							if( c.getX() + c.getWidth() < x ) {
+								// move component and set width to zero
+								c.setBounds( x, c.getY(), 0, c.getHeight() );
+							} else {
+								// move component and reduce size
+								c.setBounds( x, c.getY(), c.getWidth() - (x - c.getX()), c.getHeight() );
+								break;
+							}
+						}
+					}
+
+					// move components that are on the left side of the glue
+					for( int i = glueIndex + 1; i < components.length; i++ ) {
+						Component c = components[i];
+						c.setLocation( c.getX() - offset, c.getY() );
+					}
+				}
+			}
+		}
+	}
+
 	//---- class TakeFocus ----------------------------------------------------
 
 	/**

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuItemRenderer.java

@@ -63,6 +63,8 @@ import com.formdev.flatlaf.util.SystemInfo;
  * @uiDefault MenuItem.acceleratorArrowGap							int
  * @uiDefault MenuItem.checkBackground								Color
  * @uiDefault MenuItem.checkMargins									Insets
+ * @uiDefault MenuItem.selectionInsets								Insets
+ * @uiDefault MenuItem.selectionArc									int
  * @uiDefault MenuItem.selectionType								String	null (default) or underline
  * @uiDefault MenuItem.underlineSelectionBackground					Color
  * @uiDefault MenuItem.underlineSelectionCheckBackground			Color
@@ -91,12 +93,16 @@ public class FlatMenuItemRenderer
 	@Styleable protected Color checkBackground = UIManager.getColor( "MenuItem.checkBackground" );
 	@Styleable protected Insets checkMargins = UIManager.getInsets( "MenuItem.checkMargins" );
 
+	/** @since 3 */ @Styleable protected Insets selectionInsets = UIManager.getInsets( "MenuItem.selectionInsets" );
+	/** @since 3 */ @Styleable protected int selectionArc = UIManager.getInt( "MenuItem.selectionArc" );
+
 	@Styleable protected Color underlineSelectionBackground = UIManager.getColor( "MenuItem.underlineSelectionBackground" );
 	@Styleable protected Color underlineSelectionCheckBackground = UIManager.getColor( "MenuItem.underlineSelectionCheckBackground" );
 	@Styleable protected Color underlineSelectionColor = UIManager.getColor( "MenuItem.underlineSelectionColor" );
 	@Styleable protected int underlineSelectionHeight = UIManager.getInt( "MenuItem.underlineSelectionHeight" );
 
 	private boolean iconsShared = true;
+	private final Font menuFont = UIManager.getFont( "Menu.font" );
 
 	protected FlatMenuItemRenderer( JMenuItem menuItem, Icon checkIcon, Icon arrowIcon,
 		Font acceleratorFont, String acceleratorDelimiter )
@@ -169,6 +175,19 @@ public class FlatMenuItemRenderer
 		return infos;
 	}
 
+	/** @since 2.5 */
+	public Object getStyleableValue( String key ) {
+		if( key.startsWith( "icon." ) ) {
+			String key2 = key.substring( "icon.".length() );
+			if( checkIcon instanceof FlatCheckBoxMenuItemIcon )
+				return ((FlatCheckBoxMenuItemIcon)checkIcon).getStyleableValue( key2 );
+			if( arrowIcon instanceof FlatMenuArrowIcon )
+				return ((FlatMenuArrowIcon)arrowIcon).getStyleableValue( key2 );
+		}
+
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	protected Dimension getPreferredMenuItemSize() {
 		int width = 0;
 		int height = 0;
@@ -180,7 +199,8 @@ public class FlatMenuItemRenderer
 
 		// layout icon and text
 		SwingUtilities.layoutCompoundLabel( menuItem,
-			menuItem.getFontMetrics( menuItem.getFont() ), menuItem.getText(), getIconForLayout(),
+			menuItem.getFontMetrics( isTopLevelMenu ? getTopLevelFont() : menuItem.getFont() ),
+			menuItem.getText(), getIconForLayout(),
 			menuItem.getVerticalAlignment(), menuItem.getHorizontalAlignment(),
 			menuItem.getVerticalTextPosition(), menuItem.getHorizontalTextPosition(),
 			viewRect, iconRect, textRect, scale( menuItem.getIconTextGap() ) );
@@ -282,7 +302,8 @@ public class FlatMenuItemRenderer
 
 		// layout icon and text
 		SwingUtilities.layoutCompoundLabel( menuItem,
-			menuItem.getFontMetrics( menuItem.getFont() ), menuItem.getText(), getIconForLayout(),
+			menuItem.getFontMetrics( isTopLevelMenu ? getTopLevelFont() : menuItem.getFont() ),
+			menuItem.getText(), getIconForLayout(),
 			menuItem.getVerticalAlignment(), menuItem.getHorizontalAlignment(),
 			menuItem.getVerticalTextPosition(), menuItem.getHorizontalTextPosition(),
 			labelRect, iconRect, textRect, scale( menuItem.getIconTextGap() ) );
@@ -321,10 +342,16 @@ public class FlatMenuItemRenderer
 		g.setColor( Color.orange ); g.drawRect( arrowRect.x, arrowRect.y, arrowRect.width - 1, arrowRect.height - 1 );
 debug*/
 
+		boolean armedOrSelected = isArmedOrSelected( menuItem );
 		boolean underlineSelection = isUnderlineSelection();
-		paintBackground( g, underlineSelection ? underlineSelectionBackground : selectionBackground );
+
-		if( underlineSelection && isArmedOrSelected( menuItem ) )
+		paintBackground( g );
-			paintUnderlineSelection( g, underlineSelectionColor, underlineSelectionHeight );
+		if( armedOrSelected ) {
+			if( underlineSelection )
+				paintUnderlineSelection( g, underlineSelectionBackground, underlineSelectionColor, underlineSelectionHeight );
+			else
+				paintSelection( g, selectionBackground, selectionInsets, selectionArc );
+		}
 		paintIcon( g, iconRect, getIconForPainting(), underlineSelection ? underlineSelectionCheckBackground : checkBackground, selectionBackground );
 		paintText( g, textRect, menuItem.getText(), selectionForeground, disabledForeground );
 		paintAccelerator( g, accelRect, getAcceleratorText(), acceleratorForeground, acceleratorSelectionForeground, disabledForeground );
@@ -332,21 +359,35 @@ debug*/
 			paintArrowIcon( g, arrowRect, arrowIcon );
 	}
 
-	protected void paintBackground( Graphics g, Color selectionBackground ) {
+	/** @since 3 */
-		boolean armedOrSelected = isArmedOrSelected( menuItem );
+	protected void paintBackground( Graphics g ) {
-		if( menuItem.isOpaque() || armedOrSelected ) {
+		if( menuItem.isOpaque() ) {
-			// paint background
+			g.setColor( menuItem.getBackground() );
-			g.setColor( armedOrSelected
-				? deriveBackground( selectionBackground )
-				: menuItem.getBackground() );
 			g.fillRect( 0, 0, menuItem.getWidth(), menuItem.getHeight() );
 		}
 	}
 
-	protected void paintUnderlineSelection( Graphics g, Color underlineSelectionColor, int underlineSelectionHeight ) {
+	/** @since 3 */
+	protected void paintSelection( Graphics g, Color selectionBackground, Insets selectionInsets, int selectionArc ) {
+		float arc = scale( selectionArc / 2f );
+
+		g.setColor( deriveBackground( selectionBackground ) );
+		FlatUIUtils.paintSelection( (Graphics2D) g, 0, 0, menuItem.getWidth(), menuItem.getHeight(),
+			scale( selectionInsets ), arc, arc, arc, arc, 0 );
+	}
+
+	/** @since 3 */
+	protected void paintUnderlineSelection( Graphics g, Color underlineSelectionBackground,
+		Color underlineSelectionColor, int underlineSelectionHeight )
+	{
 		int width = menuItem.getWidth();
 		int height = menuItem.getHeight();
 
+		// paint background
+		g.setColor( deriveBackground( underlineSelectionBackground ) );
+		g.fillRect( 0, 0, width, height );
+
+		// paint underline
 		int underlineHeight = scale( underlineSelectionHeight );
 		g.setColor( underlineSelectionColor );
 		if( isTopLevelMenu( menuItem ) ) {
@@ -392,9 +433,10 @@ debug*/
 		}
 
 		int mnemonicIndex = FlatLaf.isShowMnemonics() ? menuItem.getDisplayedMnemonicIndex() : -1;
-		Color foreground = (isTopLevelMenu( menuItem ) ? menuItem.getParent() : menuItem).getForeground();
+		boolean isTopLevelMenu = isTopLevelMenu( menuItem );
+		Color foreground = (isTopLevelMenu ? menuItem.getParent() : menuItem).getForeground();
 
-		paintText( g, menuItem, textRect, text, mnemonicIndex, menuItem.getFont(),
+		paintText( g, menuItem, textRect, text, mnemonicIndex, isTopLevelMenu ? getTopLevelFont() : menuItem.getFont(),
 			foreground, isUnderlineSelection() ? foreground : selectionForeground, disabledForeground );
 	}
 
@@ -446,6 +488,19 @@ debug*/
 	protected static void paintHTMLText( Graphics g, JMenuItem menuItem,
 		Rectangle textRect, View htmlView, Color selectionForeground )
 	{
+		// On Windows, using Segoe UI font, Java 15 or older and scaling greater than 1,
+		// the width of the HTML view may be initially too small (because component
+		// is not connected to a GraphicsConfiguration when getPreferredSize() is invoked).
+		// Since Java 16, this seems to be fixed somehow by doing popup menu layout twice.
+		//
+		// If using a too small width for htmlView.paint(), the view would rearrange
+		// its children and wrap them to two lines. To avoid this, use view preferred X span
+		// for painting. Core Lafs actually do the same in class MenuItemLayoutHelper.
+		//
+		// Example HTML text that causes the problem: "<html>some <b>HTML</b> <i>text</i></html>"
+		textRect = new Rectangle( textRect );
+		textRect.width = (int) htmlView.getPreferredSpan( View.X_AXIS );
+
 		if( isArmedOrSelected( menuItem ) && selectionForeground != null )
 			g = new GraphicsProxyWithTextColor( (Graphics2D) g, selectionForeground );
 
@@ -468,6 +523,15 @@ debug*/
 		return "underline".equals( UIManager.getString( "MenuItem.selectionType" ) );
 	}
 
+	private Font getTopLevelFont() {
+		Font font = menuItem.getFont();
+		// menu item parent may be null if JMenu.isTopLevelMenu() is overridden
+		// and does not check parent (e.g. com.jidesoft.swing.JideMenu.isTopLevelMenu())
+		return (font != menuFont || menuItem.getParent() == null)
+			? font
+			: menuItem.getParent().getFont();
+	}
+
 	private Icon getIconForPainting() {
 		Icon icon = menuItem.getIcon();
 

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuItemUI.java

@@ -16,16 +16,19 @@
 
 package com.formdev.flatlaf.ui;
 
-import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.beans.PropertyChangeListener;
+import java.lang.invoke.MethodHandles;
 import java.util.Map;
 import javax.swing.Icon;
 import javax.swing.JComponent;
+import javax.swing.JMenuItem;
 import javax.swing.LookAndFeel;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicMenuItemUI;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableField;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableLookupProvider;
 import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
 import com.formdev.flatlaf.ui.FlatStylingSupport.UnknownStyleException;
 import com.formdev.flatlaf.util.LoggingFacade;
@@ -58,9 +61,15 @@ import com.formdev.flatlaf.util.LoggingFacade;
  *
  * @author Karl Tauber
  */
+@StyleableField( cls=BasicMenuItemUI.class, key="selectionBackground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="selectionForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="disabledForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="acceleratorForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="acceleratorSelectionForeground" )
+
 public class FlatMenuItemUI
 	extends BasicMenuItemUI
-	implements StyleableUI
+	implements StyleableUI, StyleableLookupProvider
 {
 	private FlatMenuItemRenderer renderer;
 	private Map<String, Object> oldStyleValues;
@@ -119,42 +128,54 @@ public class FlatMenuItemUI
 
 	/** @since 2 */
 	protected Object applyStyleProperty( String key, Object value ) {
+		return applyStyleProperty( menuItem, this, renderer, key, value );
+	}
+
+	static Object applyStyleProperty( JMenuItem menuItem, BasicMenuItemUI ui,
+		FlatMenuItemRenderer renderer, String key, Object value )
+	{
 		try {
 			return renderer.applyStyleProperty( key, value );
 		} catch ( UnknownStyleException ex ) {
 			// ignore
 		}
 
-		Object oldValue;
+		return FlatStylingSupport.applyToAnnotatedObjectOrComponent( ui, menuItem, key, value );
-		switch( key ) {
-			// BasicMenuItemUI
-			case "selectionBackground": oldValue = selectionBackground; selectionBackground = (Color) value; return oldValue;
-			case "selectionForeground": oldValue = selectionForeground; selectionForeground = (Color) value; return oldValue;
-			case "disabledForeground": oldValue = disabledForeground; disabledForeground = (Color) value; return oldValue;
-			case "acceleratorForeground": oldValue = acceleratorForeground; acceleratorForeground = (Color) value; return oldValue;
-			case "acceleratorSelectionForeground": oldValue = acceleratorSelectionForeground; acceleratorSelectionForeground = (Color) value; return oldValue;
-		}
-
-		return FlatStylingSupport.applyToAnnotatedObjectOrComponent( this, menuItem, key, value );
 	}
 
 	/** @since 2 */
 	@Override
 	public Map<String, Class<?>> getStyleableInfos( JComponent c ) {
-		return getStyleableInfos( renderer );
+		return getStyleableInfos( this, renderer );
 	}
 
-	static Map<String, Class<?>> getStyleableInfos( FlatMenuItemRenderer renderer ) {
+	static Map<String, Class<?>> getStyleableInfos( BasicMenuItemUI ui, FlatMenuItemRenderer renderer ) {
-		Map<String, Class<?>> infos = new FlatStylingSupport.StyleableInfosMap<>();
+		Map<String, Class<?>> infos = FlatStylingSupport.getAnnotatedStyleableInfos( ui );
-		infos.put( "selectionBackground", Color.class );
-		infos.put( "selectionForeground", Color.class );
-		infos.put( "disabledForeground", Color.class );
-		infos.put( "acceleratorForeground", Color.class );
-		infos.put( "acceleratorSelectionForeground", Color.class );
 		infos.putAll( renderer.getStyleableInfos() );
 		return infos;
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return getStyleableValue( this, renderer, key );
+	}
+
+	static Object getStyleableValue( BasicMenuItemUI ui, FlatMenuItemRenderer renderer, String key ) {
+		Object value = renderer.getStyleableValue( key );
+		if( value == null )
+			value = FlatStylingSupport.getAnnotatedStyleableValue( ui, key );
+		return value;
+	}
+
+	/** @since 2.5 */
+	@Override
+	public MethodHandles.Lookup getLookupForStyling() {
+		// MethodHandles.lookup() is caller sensitive and must be invoked in this class,
+		// otherwise it is not possible to access protected fields in JRE superclass
+		return MethodHandles.lookup();
+	}
+
 	@Override
 	protected Dimension getPreferredMenuItemSize( JComponent c, Icon checkIcon, Icon arrowIcon, int defaultTextIconGap ) {
 		return renderer.getPreferredMenuItemSize();

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuUI.java

@@ -20,8 +20,12 @@ import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Font;
 import java.awt.Graphics;
+import java.awt.Insets;
+import java.awt.Rectangle;
+import java.awt.Window;
 import java.awt.event.MouseEvent;
 import java.beans.PropertyChangeListener;
+import java.lang.invoke.MethodHandles;
 import java.util.Map;
 import java.util.function.Function;
 import javax.swing.ButtonModel;
@@ -30,14 +34,18 @@ import javax.swing.JComponent;
 import javax.swing.JMenu;
 import javax.swing.JMenuBar;
 import javax.swing.JMenuItem;
+import javax.swing.JRootPane;
 import javax.swing.LookAndFeel;
+import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.event.MouseInputListener;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.MenuBarUI;
+import javax.swing.plaf.basic.BasicMenuItemUI;
 import javax.swing.plaf.basic.BasicMenuUI;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableField;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableLookupProvider;
 import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
-import com.formdev.flatlaf.ui.FlatStylingSupport.UnknownStyleException;
 import com.formdev.flatlaf.util.LoggingFacade;
 
 /**
@@ -71,16 +79,27 @@ import com.formdev.flatlaf.util.LoggingFacade;
  *
  * <!-- FlatMenuRenderer -->
  *
+ * @uiDefault MenuBar.selectionInsets								Insets
+ * @uiDefault MenuBar.selectionEmbeddedInsets						Insets
+ * @uiDefault MenuBar.selectionArc									int
  * @uiDefault MenuBar.hoverBackground								Color
+ * @uiDefault MenuBar.selectionBackground							Color	optional; defaults to Menu.selectionBackground
+ * @uiDefault MenuBar.selectionForeground							Color	optional; defaults to Menu.selectionForeground
  * @uiDefault MenuBar.underlineSelectionBackground					Color
  * @uiDefault MenuBar.underlineSelectionColor						Color
  * @uiDefault MenuBar.underlineSelectionHeight						int
  *
  * @author Karl Tauber
  */
+@StyleableField( cls=BasicMenuItemUI.class, key="selectionBackground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="selectionForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="disabledForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="acceleratorForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="acceleratorSelectionForeground" )
+
 public class FlatMenuUI
 	extends BasicMenuUI
-	implements StyleableUI
+	implements StyleableUI, StyleableLookupProvider
 {
 	private FlatMenuItemRenderer renderer;
 	private Map<String, Object> oldStyleValues;
@@ -166,29 +185,27 @@ public class FlatMenuUI
 
 	/** @since 2 */
 	protected Object applyStyleProperty( String key, Object value ) {
-		try {
+		return FlatMenuItemUI.applyStyleProperty( menuItem, this, renderer, key, value );
-			return renderer.applyStyleProperty( key, value );
-		} catch ( UnknownStyleException ex ) {
-			// ignore
-		}
-
-		Object oldValue;
-		switch( key ) {
-			// BasicMenuItemUI
-			case "selectionBackground": oldValue = selectionBackground; selectionBackground = (Color) value; return oldValue;
-			case "selectionForeground": oldValue = selectionForeground; selectionForeground = (Color) value; return oldValue;
-			case "disabledForeground": oldValue = disabledForeground; disabledForeground = (Color) value; return oldValue;
-			case "acceleratorForeground": oldValue = acceleratorForeground; acceleratorForeground = (Color) value; return oldValue;
-			case "acceleratorSelectionForeground": oldValue = acceleratorSelectionForeground; acceleratorSelectionForeground = (Color) value; return oldValue;
-		}
-
-		return FlatStylingSupport.applyToAnnotatedObjectOrComponent( this, menuItem, key, value );
 	}
 
 	/** @since 2 */
 	@Override
 	public Map<String, Class<?>> getStyleableInfos( JComponent c ) {
-		return FlatMenuItemUI.getStyleableInfos( renderer );
+		return FlatMenuItemUI.getStyleableInfos( this, renderer );
+	}
+
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatMenuItemUI.getStyleableValue( this, renderer, key );
+	}
+
+	/** @since 2.5 */
+	@Override
+	public MethodHandles.Lookup getLookupForStyling() {
+		// MethodHandles.lookup() is caller sensitive and must be invoked in this class,
+		// otherwise it is not possible to access protected fields in JRE superclass
+		return MethodHandles.lookup();
 	}
 
 	@Override
@@ -215,10 +232,15 @@ public class FlatMenuUI
 	protected class FlatMenuRenderer
 		extends FlatMenuItemRenderer
 	{
+		/** @since 3 */ protected Insets menuBarSelectionInsets = UIManager.getInsets( "MenuBar.selectionInsets" );
+		/** @since 3 */ protected Insets menuBarSelectionEmbeddedInsets = UIManager.getInsets( "MenuBar.selectionEmbeddedInsets" );
+		/** @since 3 */ protected int menuBarSelectionArc = UIManager.getInt( "MenuBar.selectionArc" );
 		protected Color hoverBackground = UIManager.getColor( "MenuBar.hoverBackground" );
-		protected Color menuBarUnderlineSelectionBackground = FlatUIUtils.getUIColor( "MenuBar.underlineSelectionBackground", underlineSelectionBackground );
+		/** @since 2.5 */ protected Color menuBarSelectionBackground = UIManager.getColor( "MenuBar.selectionBackground" );
-		protected Color menuBarUnderlineSelectionColor = FlatUIUtils.getUIColor( "MenuBar.underlineSelectionColor", underlineSelectionColor );
+		/** @since 2.5 */ protected Color menuBarSelectionForeground = UIManager.getColor( "MenuBar.selectionForeground" );
-		protected int menuBarUnderlineSelectionHeight = FlatUIUtils.getUIInt( "MenuBar.underlineSelectionHeight", underlineSelectionHeight );
+		protected Color menuBarUnderlineSelectionBackground = UIManager.getColor( "MenuBar.underlineSelectionBackground" );
+		protected Color menuBarUnderlineSelectionColor = UIManager.getColor( "MenuBar.underlineSelectionColor" );
+		protected int menuBarUnderlineSelectionHeight = FlatUIUtils.getUIInt( "MenuBar.underlineSelectionHeight", -1 );
 
 		protected FlatMenuRenderer( JMenuItem menuItem, Icon checkIcon, Icon arrowIcon,
 			Font acceleratorFont, String acceleratorDelimiter )
@@ -226,32 +248,76 @@ public class FlatMenuUI
 			super( menuItem, checkIcon, arrowIcon, acceleratorFont, acceleratorDelimiter );
 		}
 
+		/** @since 3 */
 		@Override
-		protected void paintBackground( Graphics g, Color selectionBackground ) {
+		protected void paintBackground( Graphics g ) {
-			if( ((JMenu)menuItem).isTopLevelMenu() ) {
+			super.paintBackground( g );
-				if( isUnderlineSelection() )
-					selectionBackground = getStyleFromMenuBarUI( ui -> ui.underlineSelectionBackground, menuBarUnderlineSelectionBackground );
 
-				ButtonModel model = menuItem.getModel();
+			if( ((JMenu)menuItem).isTopLevelMenu() && isHover() ) {
-				if( model.isRollover() && !model.isArmed() && !model.isSelected() && model.isEnabled() ) {
+				// paint hover background
-					g.setColor( deriveBackground( getStyleFromMenuBarUI( ui -> ui.hoverBackground, hoverBackground ) ) );
+				Color color = deriveBackground( getStyleFromMenuBarUI( ui -> ui.hoverBackground, hoverBackground ) );
+				if( isUnderlineSelection() ) {
+					g.setColor( color );
 					g.fillRect( 0, 0, menuItem.getWidth(), menuItem.getHeight() );
-					return;
+				} else
-				}
+					paintSelection( g, color, selectionInsets, selectionArc );
+			}
+		}
+
+		/** @since 3 */
+		@Override
+		protected void paintSelection( Graphics g, Color selectionBackground, Insets selectionInsets, int selectionArc ) {
+			if( ((JMenu)menuItem).isTopLevelMenu() ) {
+				if( !isHover() )
+					selectionBackground = getStyleFromMenuBarUI( ui -> ui.selectionBackground, menuBarSelectionBackground, selectionBackground );
+
+				JMenuBar menuBar = (JMenuBar) menuItem.getParent();
+				JRootPane rootPane = SwingUtilities.getRootPane( menuBar );
+				if( rootPane != null && rootPane.getParent() instanceof Window &&
+					rootPane.getJMenuBar() == menuBar &&
+					FlatRootPaneUI.isMenuBarEmbedded( rootPane ) )
+				{
+					selectionInsets = getStyleFromMenuBarUI( ui -> ui.selectionEmbeddedInsets, menuBarSelectionEmbeddedInsets );
+				} else
+					selectionInsets = getStyleFromMenuBarUI( ui -> ui.selectionInsets, menuBarSelectionInsets );
+
+				selectionArc = getStyleFromMenuBarUI( ui -> (ui.selectionArc != -1)
+					? ui.selectionArc : null, menuBarSelectionArc );
 			}
 
-			super.paintBackground( g, selectionBackground );
+			super.paintSelection( g, selectionBackground, selectionInsets, selectionArc );
+		}
+
+		/** @since 3 */
+		@Override
+		protected void paintUnderlineSelection( Graphics g, Color underlineSelectionBackground,
+			Color underlineSelectionColor, int underlineSelectionHeight )
+		{
+			if( ((JMenu)menuItem).isTopLevelMenu() ) {
+				underlineSelectionBackground = getStyleFromMenuBarUI( ui -> ui.underlineSelectionBackground, menuBarUnderlineSelectionBackground, underlineSelectionBackground );
+				underlineSelectionColor = getStyleFromMenuBarUI( ui -> ui.underlineSelectionColor, menuBarUnderlineSelectionColor, underlineSelectionColor );
+				underlineSelectionHeight = getStyleFromMenuBarUI( ui -> (ui.underlineSelectionHeight != -1) ? ui.underlineSelectionHeight : null,
+					 (menuBarUnderlineSelectionHeight != -1) ? menuBarUnderlineSelectionHeight : underlineSelectionHeight );
+			}
+
+			super.paintUnderlineSelection( g, underlineSelectionBackground, underlineSelectionColor, underlineSelectionHeight );
 		}
 
 		@Override
-		protected void paintUnderlineSelection( Graphics g, Color underlineSelectionColor, int underlineSelectionHeight ) {
+		protected void paintText( Graphics g, Rectangle textRect, String text, Color selectionForeground, Color disabledForeground ) {
-			if( ((JMenu)menuItem).isTopLevelMenu() ) {
+			if( ((JMenu)menuItem).isTopLevelMenu() && !isUnderlineSelection() )
-				underlineSelectionColor = getStyleFromMenuBarUI( ui -> ui.underlineSelectionColor, menuBarUnderlineSelectionColor );
+				selectionForeground = getStyleFromMenuBarUI( ui -> ui.selectionForeground, menuBarSelectionForeground, selectionForeground );
-				underlineSelectionHeight = getStyleFromMenuBarUI( ui -> (ui.underlineSelectionHeight != -1)
-					? ui.underlineSelectionHeight : null, menuBarUnderlineSelectionHeight );
-			}
 
-			super.paintUnderlineSelection( g, underlineSelectionColor, underlineSelectionHeight );
+			super.paintText( g, textRect, text, selectionForeground, disabledForeground );
+		}
+
+		private boolean isHover() {
+			ButtonModel model = menuItem.getModel();
+			return model.isRollover() && !model.isArmed() && !model.isSelected() && model.isEnabled();
+		}
+
+		private <T> T getStyleFromMenuBarUI( Function<FlatMenuBarUI, T> f, T defaultValue, T defaultValue2 ) {
+			return getStyleFromMenuBarUI( f, (defaultValue != null) ? defaultValue : defaultValue2 );
 		}
 
 		private <T> T getStyleFromMenuBarUI( Function<FlatMenuBarUI, T> f, T defaultValue ) {

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatNativeLibrary.java

@@ -0,0 +1,115 @@
+/*
+ * Copyright 2022 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.ui;
+
+import java.io.File;
+import com.formdev.flatlaf.FlatSystemProperties;
+import com.formdev.flatlaf.util.LoggingFacade;
+import com.formdev.flatlaf.util.NativeLibrary;
+import com.formdev.flatlaf.util.SystemInfo;
+
+/**
+ * Helper class to load FlatLaf native library (.dll, .so or .dylib),
+ * if available for current operating system and CPU architecture.
+ *
+ * @author Karl Tauber
+ * @since 2.3
+ */
+class FlatNativeLibrary
+{
+	private static NativeLibrary nativeLibrary;
+
+	/**
+	 * Loads native library (if available) and returns whether loaded successfully.
+	 * Returns {@code false} if no native library is available.
+	 */
+	static synchronized boolean isLoaded() {
+		initialize();
+		return (nativeLibrary != null) ? nativeLibrary.isLoaded() : false;
+	}
+
+	private static void initialize() {
+		if( nativeLibrary != null )
+			return;
+
+		String libraryName;
+		if( SystemInfo.isWindows_10_orLater && (SystemInfo.isX86 || SystemInfo.isX86_64) ) {
+			// Windows: requires Windows 10/11 (x86 or x86_64)
+
+			libraryName = "flatlaf-windows-x86";
+			if( SystemInfo.isX86_64 )
+				libraryName += "_64";
+
+			// In Java 8, load jawt.dll (part of JRE) explicitly because it
+			// is not found when running application with <jdk>/bin/java.exe.
+			// When using <jdk>/jre/bin/java.exe, it is found.
+			// jawt.dll is located in <jdk>/jre/bin/.
+			// Java 9 and later do not have this problem,
+			// but load jawt.dll anyway to be on the safe side.
+			loadJAWT();
+		} else if( SystemInfo.isLinux && SystemInfo.isX86_64 ) {
+			// Linux: requires x86_64
+
+			libraryName = "flatlaf-linux-x86_64";
+
+			// Load libjawt.so (part of JRE) explicitly because it is not found
+			// in all Java versions/distributions.
+			// E.g. not found in Java 13 and later from openjdk.java.net.
+			// There seems to be also differences between distributions.
+			// E.g. Adoptium Java 17 does not need this, but Java 17 from openjdk.java.net does.
+			loadJAWT();
+		} else
+			return; // no native library available for current OS or CPU architecture
+
+		// load native library
+		nativeLibrary = createNativeLibrary( libraryName );
+	}
+
+	private static NativeLibrary createNativeLibrary( String libraryName ) {
+		String libraryPath = System.getProperty( FlatSystemProperties.NATIVE_LIBRARY_PATH );
+		if( libraryPath != null ) {
+			if( "system".equals( libraryPath ) ) {
+				NativeLibrary library = new NativeLibrary( libraryName, true );
+				if( library.isLoaded() )
+					return library;
+
+				LoggingFacade.INSTANCE.logSevere( "Did not find library " + libraryName + " in java.library.path, using extracted library instead", null );
+			} else {
+				File libraryFile = new File( libraryPath, System.mapLibraryName( libraryName ) );
+				if( libraryFile.exists() )
+					return new NativeLibrary( libraryFile, true );
+
+				LoggingFacade.INSTANCE.logSevere( "Did not find external library " + libraryFile + ", using extracted library instead", null );
+			}
+		}
+
+		return new NativeLibrary( "com/formdev/flatlaf/natives/" + libraryName, null, true );
+	}
+
+	private static void loadJAWT() {
+		try {
+			System.loadLibrary( "jawt" );
+		} catch( UnsatisfiedLinkError ex ) {
+			// log error only if native library jawt.dll not already loaded
+			String message = ex.getMessage();
+			if( message == null || !message.contains( "already loaded in another classloader" ) )
+				LoggingFacade.INSTANCE.logSevere( message, ex );
+		} catch( Exception ex ) {
+			LoggingFacade.INSTANCE.logSevere( ex.getMessage(), ex );
+		}
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatNativeLinuxLibrary.java

@@ -0,0 +1,104 @@
+/*
+ * Copyright 2022 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.ui;
+
+import java.awt.Point;
+import java.awt.Toolkit;
+import java.awt.Window;
+import java.awt.event.MouseEvent;
+import java.awt.geom.AffineTransform;
+import javax.swing.JDialog;
+import javax.swing.JFrame;
+
+/**
+ * Native methods for Linux.
+ * <p>
+ * <b>Note</b>: This is private API. Do not use!
+ *
+ * @author Karl Tauber
+ * @since 2.5
+ */
+class FlatNativeLinuxLibrary
+{
+	static boolean isLoaded() {
+		return FlatNativeLibrary.isLoaded();
+	}
+
+	// direction for _NET_WM_MOVERESIZE message
+	// see https://specifications.freedesktop.org/wm-spec/wm-spec-latest.html
+	static final int MOVE = 8;
+
+	private static Boolean isXWindowSystem;
+
+	private static boolean isXWindowSystem() {
+		if( isXWindowSystem == null )
+			isXWindowSystem = Toolkit.getDefaultToolkit().getClass().getName().endsWith( ".XToolkit" );
+		return isXWindowSystem;
+	}
+
+	static boolean isWMUtilsSupported( Window window ) {
+		return hasCustomDecoration( window ) && isXWindowSystem() && isLoaded();
+	}
+
+	static boolean moveOrResizeWindow( Window window, MouseEvent e, int direction ) {
+		Point pt = scale( window, e.getLocationOnScreen() );
+		return xMoveOrResizeWindow( window, pt.x, pt.y, direction );
+
+/*
+		try {
+			Class<?> cls = Class.forName( "com.formdev.flatlaf.natives.jna.linux.X11WmUtils" );
+			java.lang.reflect.Method m = cls.getMethod( "xMoveOrResizeWindow", Window.class, int.class, int.class, int.class );
+			return (Boolean) m.invoke( null, window, pt.x, pt.y, direction );
+		} catch (Exception ex) {
+			ex.printStackTrace();
+			return false;
+		}
+*/
+	}
+
+	static boolean showWindowMenu( Window window, MouseEvent e ) {
+		Point pt = scale( window, e.getLocationOnScreen() );
+		return xShowWindowMenu( window, pt.x, pt.y );
+
+/*
+		try {
+			Class<?> cls = Class.forName( "com.formdev.flatlaf.natives.jna.linux.X11WmUtils" );
+			java.lang.reflect.Method m = cls.getMethod( "xShowWindowMenu", Window.class, int.class, int.class );
+			return (Boolean) m.invoke( null, window, pt.x, pt.y );
+		} catch (Exception ex) {
+			ex.printStackTrace();
+			return false;
+		}
+*/
+	}
+
+	private static Point scale( Window window, Point pt ) {
+		AffineTransform transform = window.getGraphicsConfiguration().getDefaultTransform();
+		int x = (int) Math.round( pt.x * transform.getScaleX() );
+		int y = (int) Math.round( pt.y * transform.getScaleY() );
+		return new Point( x, y );
+	}
+
+	// X Window System
+	private static native boolean xMoveOrResizeWindow( Window window, int x, int y, int direction );
+	private static native boolean xShowWindowMenu( Window window, int x, int y );
+
+	private static boolean hasCustomDecoration( Window window ) {
+		return (window instanceof JFrame && JFrame.isDefaultLookAndFeelDecorated() && ((JFrame)window).isUndecorated()) ||
+			(window instanceof JDialog && JDialog.isDefaultLookAndFeelDecorated() && ((JDialog)window).isUndecorated());
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatNativeWindowBorder.java

@@ -42,11 +42,13 @@ import com.formdev.flatlaf.util.SystemInfo;
 public class FlatNativeWindowBorder
 {
 	// can use window decorations if:
-	// - on Windows 10
+	// - on Windows 10 or later
+	// - not if system property "sun.java2d.opengl" is true on Windows 10
 	// - not when running in JetBrains Projector, Webswing or WinPE
 	// - not disabled via system property
 	private static final boolean canUseWindowDecorations =
 		SystemInfo.isWindows_10_orLater &&
+		(SystemInfo.isWindows_11_orLater || !FlatSystemProperties.getBoolean( "sun.java2d.opengl", false )) &&
 		!SystemInfo.isProjector &&
 		!SystemInfo.isWebswing &&
 		!SystemInfo.isWinPE &&

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPanelUI.java

@@ -127,6 +127,12 @@ public class FlatPanelUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	public void update( Graphics g, JComponent c ) {
 		// fill background

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPasswordFieldUI.java

@@ -23,6 +23,7 @@ import java.awt.Toolkit;
 import java.awt.event.KeyAdapter;
 import java.awt.event.KeyEvent;
 import java.awt.event.KeyListener;
+import java.beans.PropertyChangeEvent;
 import java.util.Map;
 import javax.swing.Action;
 import javax.swing.ActionMap;
@@ -233,6 +234,14 @@ public class FlatPasswordFieldUI
 		return infos;
 	}
 
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		if( key.equals( "capsLockIconColor" ) && capsLockIcon instanceof FlatCapsLockIcon )
+			return ((FlatCapsLockIcon)capsLockIcon).getStyleableValue( key );
+
+		return super.getStyleableValue( c, key );
+	}
+
 	@Override
 	public View create( Element elem ) {
 		return new PasswordView( elem );
@@ -283,6 +292,7 @@ public class FlatPasswordFieldUI
 	protected void installRevealButton() {
 		if( showRevealButton ) {
 			revealButton = createRevealButton();
+			updateRevealButton();
 			installLayout();
 			getComponent().add( revealButton );
 		}
@@ -290,28 +300,64 @@ public class FlatPasswordFieldUI
 
 	/** @since 2 */
 	protected JToggleButton createRevealButton() {
-		JToggleButton button = new JToggleButton( revealIcon );
+		JPasswordField c = (JPasswordField) getComponent();
+		JToggleButton button = new JToggleButton( revealIcon, !c.echoCharIsSet() );
 		button.setName( "PasswordField.revealButton" );
 		prepareLeadingOrTrailingComponent( button );
 		button.putClientProperty( FlatClientProperties.STYLE_CLASS, "inTextField revealButton" );
-		if( FlatClientProperties.clientPropertyBoolean( getComponent(), KEY_REVEAL_SELECTED, false ) ) {
+		if( FlatClientProperties.clientPropertyBoolean( c, KEY_REVEAL_SELECTED, false ) ) {
 			button.setSelected( true );
 			updateEchoChar( true );
 		}
 		button.addActionListener( e -> {
 			boolean selected = button.isSelected();
 			updateEchoChar( selected );
-			getComponent().putClientProperty( KEY_REVEAL_SELECTED, selected );
+			c.putClientProperty( KEY_REVEAL_SELECTED, selected );
 		} );
 		return button;
 	}
 
+	/** @since 2.5 */
+	protected void updateRevealButton() {
+		if( revealButton == null )
+			return;
+
+		JTextComponent c = getComponent();
+		boolean visible = c.isEnabled();
+		if( visible != revealButton.isVisible() ) {
+			revealButton.setVisible( visible );
+			c.revalidate();
+			c.repaint();
+
+			if( !visible ) {
+				revealButton.setSelected( false );
+				updateEchoChar( false );
+				getComponent().putClientProperty( KEY_REVEAL_SELECTED, null );
+			}
+		}
+	}
+
+	@Override
+	protected void propertyChange( PropertyChangeEvent e ) {
+		super.propertyChange( e );
+
+		switch( e.getPropertyName() ) {
+			case "enabled":
+				updateRevealButton();
+				break;
+		}
+	}
+
 	private void updateEchoChar( boolean selected ) {
 		char newEchoChar = selected
 			? 0
 			: (echoChar != null ? echoChar : '*');
 
 		JPasswordField c = (JPasswordField) getComponent();
+		if( newEchoChar == c.getEchoChar() )
+			return;
+
+		// set echo char
 		LookAndFeel.installProperty( c, "echoChar", newEchoChar );
 
 		// check whether was able to set echo char via LookAndFeel.installProperty()

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPopupFactory.java

@@ -36,7 +36,9 @@ import java.awt.Window;
 import java.awt.event.ComponentEvent;
 import java.awt.event.ComponentListener;
 import java.awt.event.MouseEvent;
-import java.lang.reflect.InvocationTargetException;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
 import java.lang.reflect.Method;
 import javax.swing.JComponent;
 import javax.swing.JLayeredPane;
@@ -64,8 +66,8 @@ import com.formdev.flatlaf.util.UIScale;
 public class FlatPopupFactory
 	extends PopupFactory
 {
-	private Method java8getPopupMethod;
+	private MethodHandle java8getPopupMethod;
-	private Method java9getPopupMethod;
+	private MethodHandle java9getPopupMethod;
 
 	@Override
 	public Popup getPopup( Component owner, Component contents, int x, int y )
@@ -192,23 +194,25 @@ public class FlatPopupFactory
 	{
 		try {
 			if( SystemInfo.isJava_9_orLater ) {
+				// Java 9: protected Popup getPopup( Component owner, Component contents, int x, int y, boolean isHeavyWeightPopup )
 				if( java9getPopupMethod == null ) {
-					java9getPopupMethod = PopupFactory.class.getDeclaredMethod(
+					MethodType mt = MethodType.methodType( Popup.class, Component.class, Component.class, int.class, int.class, boolean.class );
-						"getPopup", Component.class, Component.class, int.class, int.class, boolean.class );
+					java9getPopupMethod = MethodHandles.lookup().findVirtual( PopupFactory.class, "getPopup", mt );
 				}
 				return (Popup) java9getPopupMethod.invoke( this, owner, contents, x, y, true );
 			} else {
-				// Java 8
+				// Java 8: private Popup getPopup( Component owner, Component contents, int ownerX, int ownerY, int popupType )
 				if( java8getPopupMethod == null ) {
-					java8getPopupMethod = PopupFactory.class.getDeclaredMethod(
+					Method m = PopupFactory.class.getDeclaredMethod(
 						"getPopup", Component.class, Component.class, int.class, int.class, int.class );
-					java8getPopupMethod.setAccessible( true );
+					m.setAccessible( true );
+					java8getPopupMethod = MethodHandles.lookup().unreflect( m );
 				}
 				return (Popup) java8getPopupMethod.invoke( this, owner, contents, x, y, /*HEAVY_WEIGHT_POPUP*/ 2 );
 			}
-		} catch( NoSuchMethodException | SecurityException | IllegalAccessException | InvocationTargetException ex ) {
+		} catch( Throwable ex ) {
-			// ignore
+			// fallback
-			return null;
+			return super.getPopup( owner, contents, x, y );
 		}
 	}
 

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPopupMenuBorder.java

@@ -66,6 +66,16 @@ public class FlatPopupMenuBorder
 		return infos;
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( String key ) {
+		switch( key ) {
+			case "borderInsets": return getStyleableValue();
+			case "borderColor": return borderColor;
+		}
+		return null;
+	}
+
 	@Override
 	public Color getLineColor() {
 		return (borderColor != null) ? borderColor : super.getLineColor();

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPopupMenuUI.java

@@ -130,7 +130,7 @@ public class FlatPopupMenuUI
 
 		LayoutManager layout = popupMenu.getLayout();
 		if( layout == null || layout instanceof UIResource )
-			popupMenu.setLayout( new FlatMenuLayout( popupMenu, BoxLayout.Y_AXIS ) );
+			popupMenu.setLayout( new FlatPopupMenuLayout( popupMenu, BoxLayout.Y_AXIS ) );
 	}
 
 	@Override
@@ -184,6 +184,12 @@ public class FlatPopupMenuUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this, popupMenu.getBorder() );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, popupMenu.getBorder(), key );
+	}
+
 	@Override
 	public Popup getPopup( JPopupMenu popup, int x, int y ) {
 		// do not add scroller to combobox popups or to popups that already have a scroll pane
@@ -230,12 +236,15 @@ public class FlatPopupMenuUI
 		return screenBounds.height - screenInsets.top - screenInsets.bottom;
 	}
 
-	//---- class FlatMenuLayout -----------------------------------------------
+	//---- class FlatPopupMenuLayout ------------------------------------------
 
-	protected static class FlatMenuLayout
+	/**
+	 * @since 2.4
+	 */
+	protected static class FlatPopupMenuLayout
 		extends DefaultMenuLayout
 	{
-		public FlatMenuLayout( Container target, int axis ) {
+		public FlatPopupMenuLayout( Container target, int axis ) {
 			super( target, axis );
 		}
 

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatProgressBarUI.java

@@ -160,6 +160,12 @@ public class FlatProgressBarUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	public Dimension getPreferredSize( JComponent c ) {
 		Dimension size = super.getPreferredSize( c );

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatRadioButtonMenuItemUI.java

@@ -16,18 +16,20 @@
 
 package com.formdev.flatlaf.ui;
 
-import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.beans.PropertyChangeListener;
+import java.lang.invoke.MethodHandles;
 import java.util.Map;
 import javax.swing.Icon;
 import javax.swing.JComponent;
 import javax.swing.LookAndFeel;
 import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.basic.BasicMenuItemUI;
 import javax.swing.plaf.basic.BasicRadioButtonMenuItemUI;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableField;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableLookupProvider;
 import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
-import com.formdev.flatlaf.ui.FlatStylingSupport.UnknownStyleException;
 import com.formdev.flatlaf.util.LoggingFacade;
 
 /**
@@ -58,9 +60,15 @@ import com.formdev.flatlaf.util.LoggingFacade;
  *
  * @author Karl Tauber
  */
+@StyleableField( cls=BasicMenuItemUI.class, key="selectionBackground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="selectionForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="disabledForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="acceleratorForeground" )
+@StyleableField( cls=BasicMenuItemUI.class, key="acceleratorSelectionForeground" )
+
 public class FlatRadioButtonMenuItemUI
 	extends BasicRadioButtonMenuItemUI
-	implements StyleableUI
+	implements StyleableUI, StyleableLookupProvider
 {
 	private FlatMenuItemRenderer renderer;
 	private Map<String, Object> oldStyleValues;
@@ -119,29 +127,27 @@ public class FlatRadioButtonMenuItemUI
 
 	/** @since 2 */
 	protected Object applyStyleProperty( String key, Object value ) {
-		try {
+		return FlatMenuItemUI.applyStyleProperty( menuItem, this, renderer, key, value );
-			return renderer.applyStyleProperty( key, value );
-		} catch ( UnknownStyleException ex ) {
-			// ignore
-		}
-
-		Object oldValue;
-		switch( key ) {
-			// BasicMenuItemUI
-			case "selectionBackground": oldValue = selectionBackground; selectionBackground = (Color) value; return oldValue;
-			case "selectionForeground": oldValue = selectionForeground; selectionForeground = (Color) value; return oldValue;
-			case "disabledForeground": oldValue = disabledForeground; disabledForeground = (Color) value; return oldValue;
-			case "acceleratorForeground": oldValue = acceleratorForeground; acceleratorForeground = (Color) value; return oldValue;
-			case "acceleratorSelectionForeground": oldValue = acceleratorSelectionForeground; acceleratorSelectionForeground = (Color) value; return oldValue;
-		}
-
-		return FlatStylingSupport.applyToAnnotatedObjectOrComponent( this, menuItem, key, value );
 	}
 
 	/** @since 2 */
 	@Override
 	public Map<String, Class<?>> getStyleableInfos( JComponent c ) {
-		return FlatMenuItemUI.getStyleableInfos( renderer );
+		return FlatMenuItemUI.getStyleableInfos( this, renderer );
+	}
+
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatMenuItemUI.getStyleableValue( this, renderer, key );
+	}
+
+	/** @since 2.5 */
+	@Override
+	public MethodHandles.Lookup getLookupForStyling() {
+		// MethodHandles.lookup() is caller sensitive and must be invoked in this class,
+		// otherwise it is not possible to access protected fields in JRE superclass
+		return MethodHandles.lookup();
 	}
 
 	@Override

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatRadioButtonUI.java

@@ -18,12 +18,16 @@ package com.formdev.flatlaf.ui;
 
 import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Color;
+import java.awt.Component;
 import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Insets;
 import java.awt.Rectangle;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
 import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
 import java.util.Map;
 import java.util.Objects;
 import javax.swing.AbstractButton;
@@ -31,6 +35,7 @@ import javax.swing.CellRendererPane;
 import javax.swing.Icon;
 import javax.swing.JComponent;
 import javax.swing.LookAndFeel;
+import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicButtonListener;
@@ -78,7 +83,7 @@ public class FlatRadioButtonUI
 	private Map<String, Object> oldStyleValues;
 
 	public static ComponentUI createUI( JComponent c ) {
-		return FlatUIUtils.canUseSharedUI( c )
+		return FlatUIUtils.canUseSharedUI( c ) && !FlatUIUtils.needsLightAWTPeer( c )
 			? FlatUIUtils.createSharedUI( FlatRadioButtonUI.class, () -> new FlatRadioButtonUI( true ) )
 			: new FlatRadioButtonUI( false );
 	}
@@ -90,11 +95,29 @@ public class FlatRadioButtonUI
 
 	@Override
 	public void installUI( JComponent c ) {
+		if( FlatUIUtils.needsLightAWTPeer( c ) )
+			FlatUIUtils.runWithLightAWTPeerUIDefaults( () -> installUIImpl( c ) );
+		else
+			installUIImpl( c );
+	}
+
+	private void installUIImpl( JComponent c ) {
 		super.installUI( c );
 
+		if( FlatUIUtils.isAWTPeer( c ) )
+			AWTPeerMouseExitedFix.install( c );
+
 		installStyle( (AbstractButton) c );
 	}
 
+	@Override
+	public void uninstallUI( JComponent c ) {
+		super.uninstallUI( c );
+
+		if( FlatUIUtils.isAWTPeer( c ) )
+			AWTPeerMouseExitedFix.uninstall( c );
+	}
+
 	@Override
 	public void installDefaults( AbstractButton b ) {
 		super.installDefaults( b );
@@ -199,6 +222,19 @@ public class FlatRadioButtonUI
 		return infos;
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		// style icon
+		if( key.startsWith( "icon." ) ) {
+			return (icon instanceof FlatCheckBoxIcon)
+				? ((FlatCheckBoxIcon)icon).getStyleableValue( key.substring( "icon.".length() ) )
+				: null;
+		}
+
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	private static final Insets tempInsets = new Insets( 0, 0, 0, 0 );
 
 	@Override
@@ -308,4 +344,69 @@ public class FlatRadioButtonUI
 			FlatRadioButtonUI.this.propertyChange( b, e );
 		}
 	}
+
+	//---- class AWTPeerMouseExitedFix ----------------------------------------
+
+	/**
+	 * Hack for missing mouse-exited event for java.awt.Checkbox on macOS (to fix hover effect).
+	 *
+	 * On macOS, AWT components internally use Swing components.
+	 * This is implemented in class sun.lwawt.LWCheckboxPeer, which uses
+	 * a container component CheckboxDelegate that has a JCheckBox and a JRadioButton
+	 * as children. Only one of them is visible.
+	 *
+	 * The reason that mouse-exited event is not sent to the JCheckBox or JRadioButton
+	 * is that sun.lwawt.LWComponentPeer.createDelegateEvent() uses
+	 * SwingUtilities.getDeepestComponentAt() to find the event target,
+	 * which finds the container component CheckboxDelegate,
+	 * which receives the mouse-exited event.
+	 *
+	 * This class adds listeners and forwards the mouse-exited event
+	 * from CheckboxDelegate to JCheckBox or JRadioButton.
+	 */
+	private static class AWTPeerMouseExitedFix
+		extends MouseAdapter
+		implements PropertyChangeListener
+	{
+		private final JComponent button;
+
+		static void install( JComponent button ) {
+			AWTPeerMouseExitedFix l = new AWTPeerMouseExitedFix( button );
+			button.addPropertyChangeListener( "ancestor", l );
+			Container parent = button.getParent();
+			if( parent != null )
+				parent.addMouseListener( l );
+		}
+
+		static void uninstall( JComponent button ) {
+			for( PropertyChangeListener l : button.getPropertyChangeListeners( "ancestor" ) ) {
+				if( l instanceof AWTPeerMouseExitedFix ) {
+					button.removePropertyChangeListener( "ancestor", l );
+					Container parent = button.getParent();
+					if( parent != null )
+						parent.removeMouseListener( (AWTPeerMouseExitedFix) l );
+					break;
+				}
+			}
+		}
+
+		AWTPeerMouseExitedFix( JComponent button ) {
+			this.button = button;
+		}
+
+		@Override
+		public void propertyChange( PropertyChangeEvent e ) {
+			if( e.getOldValue() instanceof Component )
+				((Component)e.getOldValue()).removeMouseListener( this );
+			if( e.getNewValue() instanceof Component ) {
+				((Component)e.getNewValue()).removeMouseListener( this ); // avoid duplicate listeners
+				((Component)e.getNewValue()).addMouseListener( this );
+			}
+		}
+
+		@Override
+		public void mouseExited( MouseEvent e ) {
+			button.dispatchEvent( SwingUtilities.convertMouseEvent( e.getComponent(), e, button ) );
+		}
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatRootPaneUI.java

@@ -349,6 +349,14 @@ public class FlatRootPaneUI
 					titlePane.updateIcon();
 				break;
 
+			case FlatClientProperties.TITLE_BAR_SHOW_TITLE:
+			case FlatClientProperties.TITLE_BAR_SHOW_ICONIFFY:
+			case FlatClientProperties.TITLE_BAR_SHOW_MAXIMIZE:
+			case FlatClientProperties.TITLE_BAR_SHOW_CLOSE:
+				if( titlePane != null )
+					titlePane.updateVisibility();
+				break;
+
 			case FlatClientProperties.TITLE_BAR_BACKGROUND:
 			case FlatClientProperties.TITLE_BAR_FOREGROUND:
 				if( titlePane != null )
@@ -364,6 +372,12 @@ public class FlatRootPaneUI
 			((FlatRootPaneUI)ui).titlePane.isMenuBarEmbedded();
 	}
 
+	/** @since 2.4 */
+	protected static FlatTitlePane getTitlePane( JRootPane rootPane ) {
+		RootPaneUI ui = rootPane.getUI();
+		return ui instanceof FlatRootPaneUI ? ((FlatRootPaneUI)ui).titlePane : null;
+	}
+
 	//---- class FlatRootLayout -----------------------------------------------
 
 	protected class FlatRootLayout

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatRoundBorder.java

@@ -17,7 +17,10 @@
 package com.formdev.flatlaf.ui;
 
 import java.awt.Component;
+import java.awt.Graphics;
+import javax.swing.JSpinner;
 import javax.swing.UIManager;
+import javax.swing.plaf.SpinnerUI;
 import com.formdev.flatlaf.ui.FlatStylingSupport.Styleable;
 
 /**
@@ -35,6 +38,19 @@ public class FlatRoundBorder
 	// only used via styling (not in UI defaults, but has likewise client properties)
 	/** @since 2 */ @Styleable protected Boolean roundRect;
 
+	@Override
+	public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+		// make mac style spinner border smaller (border does not surround arrow buttons)
+		if( isMacStyleSpinner( c ) ) {
+			int macStyleButtonsWidth = ((FlatSpinnerUI)((JSpinner)c).getUI()).getMacStyleButtonsWidth();
+			width -= macStyleButtonsWidth;
+			if( !c.getComponentOrientation().isLeftToRight() )
+				x += macStyleButtonsWidth;
+		}
+
+		super.paintBorder( c, g, x, y, width, height );
+	}
+
 	@Override
 	protected int getArc( Component c ) {
 		if( isCellEditor( c ) )
@@ -43,6 +59,17 @@ public class FlatRoundBorder
 		Boolean roundRect = FlatUIUtils.isRoundRect( c );
 		if( roundRect == null )
 			roundRect = this.roundRect;
-		return roundRect != null ? (roundRect ? Short.MAX_VALUE : 0) : arc;
+		return roundRect != null
+			? (roundRect ? Short.MAX_VALUE : 0)
+			: (isMacStyleSpinner( c ) ? 0 : arc);
+	}
+
+	private boolean isMacStyleSpinner( Component c ) {
+		if( c instanceof JSpinner ) {
+			SpinnerUI ui = ((JSpinner)c).getUI();
+			if( ui instanceof FlatSpinnerUI )
+				return ((FlatSpinnerUI)ui).isMacStyle();
+		}
+		return false;
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatScrollBarUI.java

@@ -17,6 +17,7 @@
 package com.formdev.flatlaf.ui;
 
 import java.awt.Color;
+import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Insets;
@@ -24,6 +25,7 @@ import java.awt.Rectangle;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.beans.PropertyChangeListener;
+import java.lang.invoke.MethodHandles;
 import java.util.Map;
 import java.util.Objects;
 import javax.swing.InputMap;
@@ -36,9 +38,13 @@ import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicScrollBarUI;
 import com.formdev.flatlaf.FlatClientProperties;
+import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.ui.FlatStylingSupport.Styleable;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableField;
+import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableLookupProvider;
 import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
 import com.formdev.flatlaf.util.LoggingFacade;
+import com.formdev.flatlaf.util.SystemInfo;
 import com.formdev.flatlaf.util.UIScale;
 
 /**
@@ -77,9 +83,15 @@ import com.formdev.flatlaf.util.UIScale;
  *
  * @author Karl Tauber
  */
+@StyleableField( cls=BasicScrollBarUI.class, key="track", fieldName="trackColor" )
+@StyleableField( cls=BasicScrollBarUI.class, key="thumb", fieldName="thumbColor" )
+@StyleableField( cls=BasicScrollBarUI.class, key="width", fieldName="scrollBarWidth" )
+@StyleableField( cls=BasicScrollBarUI.class, key="minimumThumbSize" )
+@StyleableField( cls=BasicScrollBarUI.class, key="maximumThumbSize" )
+
 public class FlatScrollBarUI
 	extends BasicScrollBarUI
-	implements StyleableUI
+	implements StyleableUI, StyleableLookupProvider
 {
 	// overrides BasicScrollBarUI.supportsAbsolutePositioning (which is private)
 	@Styleable protected boolean allowsAbsolutePositioning;
@@ -108,6 +120,7 @@ public class FlatScrollBarUI
 	protected boolean hoverThumb;
 
 	private Map<String, Object> oldStyleValues;
+	private boolean isAWTPeer;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatScrollBarUI();
@@ -221,6 +234,37 @@ public class FlatScrollBarUI
 					}
 					SwingUtilities.replaceUIInputMap( scrollbar, JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, inputMap );
 					break;
+
+				case "ancestor":
+					// check whether scroll bar is used as AWT peer on macOS
+					if( SystemInfo.isMacOS ) {
+						Container p = scrollbar.getParent();
+						for( int i = 0; i < 2 && p != null; i++, p = p.getParent() ) {
+							if( FlatUIUtils.isAWTPeer( p ) ) {
+								// Used to disable hover, which does not work correctly
+								// because scroll bars do not receive mouse exited event.
+								// The scroll pane, including its scroll bars, is not part
+								// of the component hierarchy and does not receive mouse events
+								// directly. Instead LWComponentPeer receives mouse events
+								// and delegates them to peers, but entered/exited events
+								// are sent only for the whole scroll pane.
+								// Exited event is only sent when mouse leaves scroll pane.
+								// If mouse enters/exits scroll bar, no entered/exited events are sent.
+								isAWTPeer = true;
+
+								// if dark theme is active, reinstall using light theme
+								if( FlatLaf.isLafDark() ) {
+									FlatUIUtils.runWithLightAWTPeerUIDefaults( () -> {
+										JScrollBar scrollbar = this.scrollbar;
+										uninstallUI( scrollbar );
+										installUI( scrollbar );
+									} );
+								}
+								break;
+							}
+						}
+					}
+					break;
 			}
 		};
 	}
@@ -246,30 +290,27 @@ public class FlatScrollBarUI
 
 	/** @since 2 */
 	protected Object applyStyleProperty( String key, Object value ) {
-		Object oldValue;
-		switch( key ) {
-			// BasicScrollBarUI
-			case "track": oldValue = trackColor; trackColor = (Color) value; return oldValue;
-			case "thumb": oldValue = thumbColor; thumbColor = (Color) value; return oldValue;
-			case "width": oldValue = scrollBarWidth; scrollBarWidth = (int) value; return oldValue;
-			case "minimumThumbSize": oldValue = minimumThumbSize; minimumThumbSize = (Dimension) value; return oldValue;
-			case "maximumThumbSize": oldValue = maximumThumbSize; maximumThumbSize = (Dimension) value; return oldValue;
-		}
-
 		return FlatStylingSupport.applyToAnnotatedObjectOrComponent( this, scrollbar, key, value );
 	}
 
 	/** @since 2 */
 	@Override
 	public Map<String, Class<?>> getStyleableInfos( JComponent c ) {
-		Map<String, Class<?>> infos = new FlatStylingSupport.StyleableInfosMap<>();
+		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
-		infos.put( "track", Color.class );
+	}
-		infos.put( "thumb", Color.class );
+
-		infos.put( "width", int.class );
+	/** @since 2.5 */
-		infos.put( "minimumThumbSize", Dimension.class );
+	@Override
-		infos.put( "maximumThumbSize", Dimension.class );
+	public Object getStyleableValue( JComponent c, String key ) {
-		FlatStylingSupport.collectAnnotatedStyleableInfos( this, infos );
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
-		return infos;
+	}
+
+	/** @since 2.5 */
+	@Override
+	public MethodHandles.Lookup getLookupForStyling() {
+		// MethodHandles.lookup() is caller sensitive and must be invoked in this class,
+		// otherwise it is not possible to access protected fields in JRE superclass
+		return MethodHandles.lookup();
 	}
 
 	@Override
@@ -311,6 +352,9 @@ public class FlatScrollBarUI
 
 	@Override
 	protected void paintTrack( Graphics g, JComponent c, Rectangle trackBounds ) {
+		if( trackBounds.isEmpty() || !scrollbar.isEnabled() )
+			return;
+
 		g.setColor( getTrackColor( c, hoverTrack, isPressed && hoverTrack && !hoverThumb ) );
 		paintTrackOrThumb( g, c, trackBounds, trackInsets, trackArc );
 	}
@@ -357,7 +401,7 @@ public class FlatScrollBarUI
 		Color trackColor = FlatUIUtils.deriveColor( this.trackColor, c.getBackground() );
 		return (pressed && pressedTrackColor != null)
 			? FlatUIUtils.deriveColor( pressedTrackColor, trackColor )
-			: ((hover && hoverTrackColor != null)
+			: ((hover && hoverTrackColor != null && !isAWTPeer)
 				? FlatUIUtils.deriveColor( hoverTrackColor, trackColor )
 				: trackColor);
 	}
@@ -367,7 +411,7 @@ public class FlatScrollBarUI
 		Color thumbColor = FlatUIUtils.deriveColor( this.thumbColor, trackColor );
 		return (pressed && pressedThumbColor != null)
 			? FlatUIUtils.deriveColor( pressedThumbColor, thumbColor )
-			: ((hover && hoverThumbColor != null)
+			: ((hover && hoverThumbColor != null && !isAWTPeer)
 				? FlatUIUtils.deriveColor( hoverThumbColor, thumbColor )
 				: thumbColor);
 	}
@@ -411,18 +455,31 @@ public class FlatScrollBarUI
 
 		@Override
 		public void mousePressed( MouseEvent e ) {
-			isPressed = true;
+			if( SwingUtilities.isLeftMouseButton( e ) || isAbsolutePositioning( e ) ) {
-			repaint();
+				isPressed = true;
+				repaint();
+
+				// update hover because BasicScrollBarUI.TrackListener.mousePressed()
+				// moves the track on middle-click (if absolute positioning is enabled)
+				if( isAbsolutePositioning( e ) )
+					update( e.getX(), e.getY() );
+			}
 		}
 
 		@Override
 		public void mouseReleased( MouseEvent e ) {
-			isPressed = false;
+			if( SwingUtilities.isLeftMouseButton( e ) || isAbsolutePositioning( e ) ) {
-			repaint();
+				isPressed = false;
+				repaint();
+			}
 
 			update( e.getX(), e.getY() );
 		}
 
+		private boolean isAbsolutePositioning( MouseEvent e ) {
+			return getSupportsAbsolutePositioning() && SwingUtilities.isMiddleMouseButton( e );
+		}
+
 		private void update( int x, int y ) {
 			boolean inTrack = getTrackBounds().contains( x, y );
 			boolean inThumb = getThumbBounds().contains( x, y );

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatScrollPaneUI.java

@@ -87,6 +87,13 @@ public class FlatScrollPaneUI
 
 	@Override
 	public void installUI( JComponent c ) {
+		if( FlatUIUtils.needsLightAWTPeer( c ) )
+			FlatUIUtils.runWithLightAWTPeerUIDefaults( () -> installUIImpl( c ) );
+		else
+			installUIImpl( c );
+	}
+
+	private void installUIImpl( JComponent c ) {
 		super.installUI( c );
 
 		int focusWidth = UIManager.getInt( "Component.focusWidth" );
@@ -343,6 +350,12 @@ public class FlatScrollPaneUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this, scrollpane.getBorder() );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, scrollpane.getBorder(), key );
+	}
+
 	@Override
 	protected void updateViewport( PropertyChangeEvent e ) {
 		super.updateViewport( e );

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatSeparatorUI.java

@@ -170,6 +170,12 @@ public class FlatSeparatorUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	public void paint( Graphics g, JComponent c ) {
 		Graphics2D g2 = (Graphics2D) g.create();

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatSliderUI.java

@@ -222,6 +222,12 @@ public class FlatSliderUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	@Override
 	public int getBaseline( JComponent c, int width, int height ) {
 		if( c == null )
@@ -525,7 +531,7 @@ debug*/
 	public static Shape createDirectionalThumbShape( float x, float y, float w, float h, float arc ) {
 		float wh = w / 2;
 
-		Path2D path = new Path2D.Float();
+		Path2D path = new Path2D.Float( Path2D.WIND_NON_ZERO, 9 );
 		path.moveTo( x + wh, y + h );
 		path.lineTo( x, y + (h - wh) );
 		path.lineTo( x, y + arc );

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatSpinnerUI.java

@@ -65,7 +65,7 @@ import com.formdev.flatlaf.util.LoggingFacade;
  * <!-- FlatSpinnerUI -->
  *
  * @uiDefault Component.minimumWidth			int
- * @uiDefault Spinner.buttonStyle				String	button (default) or none
+ * @uiDefault Spinner.buttonStyle				String	button (default), mac or none
  * @uiDefault Component.arrowType				String	chevron (default) or triangle
  * @uiDefault Component.isIntelliJTheme			boolean
  * @uiDefault Spinner.disabledBackground		Color
@@ -223,6 +223,12 @@ public class FlatSpinnerUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this, spinner.getBorder() );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, spinner.getBorder(), key );
+	}
+
 	@Override
 	protected JComponent createEditor() {
 		JComponent editor = super.createEditor();
@@ -334,7 +340,25 @@ public class FlatSpinnerUI
 
 	private Component createArrowButton( int direction, String name ) {
 		FlatArrowButton button = new FlatArrowButton( direction, arrowType, buttonArrowColor,
-			buttonDisabledArrowColor, buttonHoverArrowColor, null, buttonPressedArrowColor, null );
+			buttonDisabledArrowColor, buttonHoverArrowColor, null, buttonPressedArrowColor, null )
+		{
+			@Override
+			public int getArrowWidth() {
+				return isMacStyle() ? 7 : super.getArrowWidth();
+			}
+			@Override
+			public float getArrowThickness() {
+				return isMacStyle() ? 1.5f : super.getArrowThickness();
+			}
+			@Override
+			public float getYOffset() {
+				return isMacStyle() ? 0 : super.getYOffset();
+			}
+			@Override
+			public boolean isRoundBorderAutoXOffset() {
+				return isMacStyle() ? false : super.isRoundBorderAutoXOffset();
+			}
+		};
 		button.setName( name );
 		button.setYOffset( (direction == SwingConstants.NORTH) ? 1.25f : -1.25f );
 		if( direction == SwingConstants.NORTH )
@@ -368,10 +392,13 @@ public class FlatSpinnerUI
 		int width = c.getWidth();
 		int height = c.getHeight();
 		boolean enabled = spinner.isEnabled();
+		boolean ltr = spinner.getComponentOrientation().isLeftToRight();
+		boolean isMacStyle = isMacStyle();
+		int macStyleButtonsWidth = isMacStyle ? getMacStyleButtonsWidth() : 0;
 
 		// paint background
 		g2.setColor( getBackground( enabled ) );
-		FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
+		FlatUIUtils.paintComponentBackground( g2, ltr ? 0 : macStyleButtonsWidth, 0, width - macStyleButtonsWidth, height, focusWidth, arc );
 
 		// paint button background and separator
 		boolean paintButton = !"none".equals( buttonStyle );
@@ -380,27 +407,49 @@ public class FlatSpinnerUI
 			Component button = (handler.nextButton != null) ? handler.nextButton : handler.previousButton;
 			int arrowX = button.getX();
 			int arrowWidth = button.getWidth();
-			boolean isLeftToRight = spinner.getComponentOrientation().isLeftToRight();
-
-			// paint arrow buttons background
-			if( enabled && buttonBackground != null ) {
-				g2.setColor( buttonBackground );
-				Shape oldClip = g2.getClip();
-				if( isLeftToRight )
-					g2.clipRect( arrowX, 0, width - arrowX, height );
-				else
-					g2.clipRect( 0, 0, arrowX + arrowWidth, height );
-				FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
-				g2.setClip( oldClip );
-			}
-
-			// paint vertical line between value and arrow buttons
 			Color separatorColor = enabled ? buttonSeparatorColor : buttonDisabledSeparatorColor;
-			if( separatorColor != null && buttonSeparatorWidth > 0 ) {
+
-				g2.setColor( separatorColor );
+			if( isMacStyle ) {
+				Insets insets = spinner.getInsets();
+				int lineWidth = Math.round( FlatUIUtils.getBorderLineWidth( spinner ) );
+				int bx = arrowX;
+				int by = insets.top - lineWidth;
+				int bw = arrowWidth;
+				int bh = height - insets.top - insets.bottom + (lineWidth * 2);
 				float lw = scale( buttonSeparatorWidth );
-				float lx = isLeftToRight ? arrowX : arrowX + arrowWidth - lw;
+
-				g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - 1 - (focusWidth * 2) ) );
+				// buttons border
+				FlatUIUtils.paintOutlinedComponent( g2, bx, by, bw, bh,
+					0, 0, 0, lw, scale( 12 ),
+					null, separatorColor, buttonBackground );
+
+				// separator between buttons
+				if( separatorColor != null ) {
+					int thickness = scale( 1 );
+					g2.setColor( separatorColor );
+					g2.fill( new Rectangle2D.Float( bx + lw, by + ((bh - thickness) / 2f),
+						bw - (lw * 2), thickness ) );
+				}
+			} else {
+				// paint arrow buttons background
+				if( enabled && buttonBackground != null ) {
+					g2.setColor( buttonBackground );
+					Shape oldClip = g2.getClip();
+					if( ltr )
+						g2.clipRect( arrowX, 0, width - arrowX, height );
+					else
+						g2.clipRect( 0, 0, arrowX + arrowWidth, height );
+					FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
+					g2.setClip( oldClip );
+				}
+
+				// paint vertical line between value and arrow buttons
+				if( separatorColor != null && buttonSeparatorWidth > 0 ) {
+					g2.setColor( separatorColor );
+					float lw = scale( buttonSeparatorWidth );
+					float lx = ltr ? arrowX : arrowX + arrowWidth - lw;
+					g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - 1 - (focusWidth * 2) ) );
+				}
 			}
 		}
 
@@ -409,6 +458,19 @@ public class FlatSpinnerUI
 		FlatUIUtils.resetRenderingHints( g, oldRenderingHints );
 	}
 
+	boolean isMacStyle() {
+		return "mac".equals( buttonStyle );
+	}
+
+	int getMacStyleButtonsWidth() {
+		return (handler.nextButton != null || handler.previousButton != null)
+			? scale( MAC_STEPPER_GAP ) + scale( MAC_STEPPER_WIDTH )
+			: 0;
+	}
+
+	private static final int MAC_STEPPER_WIDTH = 15;
+	private static final int MAC_STEPPER_GAP = 3;
+
 	//---- class Handler ------------------------------------------------------
 
 	private class Handler
@@ -465,6 +527,7 @@ public class FlatSpinnerUI
 			Insets insets = parent.getInsets();
 			Rectangle r = FlatUIUtils.subtractInsets( new Rectangle( size ), insets );
 
+			// editor gets all space if there are no buttons
 			if( nextButton == null && previousButton == null ) {
 				if( editor != null )
 					editor.setBounds( r );
@@ -477,22 +540,39 @@ public class FlatSpinnerUI
 			// limit buttons width to height of a raw spinner (without insets)
 			FontMetrics fm = spinner.getFontMetrics( spinner.getFont() );
 			int maxButtonWidth = fm.getHeight() + scale( padding.top ) + scale( padding.bottom );
+			int minButtonWidth = (maxButtonWidth * 3) / 4;
 
-			// make button area square (if spinner has preferred height)
+			// make button area square (except if width is limited)
-			int buttonsWidth = Math.min( parent.getPreferredSize().height - insets.top - insets.bottom, maxButtonWidth );
+			boolean isMacStyle = isMacStyle();
+			int buttonsGap = isMacStyle ? scale( MAC_STEPPER_GAP ) : 0;
+			int prefButtonWidth = isMacStyle ? scale( MAC_STEPPER_WIDTH ) : buttonsRect.height;
+			int buttonsWidth = Math.min( Math.max( prefButtonWidth, minButtonWidth ), maxButtonWidth );
+
+			// update editor and buttons bounds
 			buttonsRect.width = buttonsWidth;
+			editorRect.width -= buttonsWidth + buttonsGap;
+			boolean ltr = parent.getComponentOrientation().isLeftToRight();
+			if( ltr )
+				buttonsRect.x += editorRect.width + buttonsGap;
+			else
+				editorRect.x += buttonsWidth + buttonsGap;
 
-			if( parent.getComponentOrientation().isLeftToRight() ) {
+			// in mac button style increase buttons height and move to the right
-				editorRect.width -= buttonsWidth;
+			// for exact alignment with border
-				buttonsRect.x += editorRect.width;
+			if( isMacStyle ) {
-			} else {
+				int lineWidth = Math.round( FlatUIUtils.getBorderLineWidth( spinner ) );
-				editorRect.x += buttonsWidth;
+				if( lineWidth > 0 ) {
-				editorRect.width -= buttonsWidth;
+					buttonsRect.x += ltr ? lineWidth : -lineWidth;
+					buttonsRect.y -= lineWidth;
+					buttonsRect.height += lineWidth * 2;
+				}
 			}
 
+			// set editor bounds
 			if( editor != null )
 				editor.setBounds( editorRect );
 
+			// set buttons bounds
 			int nextHeight = (buttonsRect.height / 2) + (buttonsRect.height % 2); // round up
 			if( nextButton != null )
 				nextButton.setBounds( buttonsRect.x, buttonsRect.y, buttonsRect.width, nextHeight );

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatSplitPaneUI.java

@@ -34,6 +34,7 @@ import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicSplitPaneDivider;
 import javax.swing.plaf.basic.BasicSplitPaneUI;
+import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.ui.FlatStylingSupport.Styleable;
 import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
 import com.formdev.flatlaf.ui.FlatStylingSupport.UnknownStyleException;
@@ -52,6 +53,13 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault SplitPaneDivider.border					Border
  * @uiDefault SplitPaneDivider.draggingColor			Color	only used if continuousLayout is false
  *
+ * <!-- BasicSplitPaneDivider -->
+ *
+ * @uiDefault SplitPane.oneTouchButtonSize				int
+ * @uiDefault SplitPane.oneTouchButtonOffset			int
+ * @uiDefault SplitPane.centerOneTouchButtons			boolean
+ * @uiDefault SplitPane.supportsOneTouchButtons			boolean	optional; default is true
+ *
  * <!-- JSplitPane -->
  *
  * @uiDefault SplitPane.continuousLayout				boolean
@@ -175,6 +183,17 @@ public class FlatSplitPaneUI
 		return infos;
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		if( divider instanceof FlatSplitPaneDivider ) {
+			Object value = ((FlatSplitPaneDivider)divider).getStyleableValue( key );
+			if( value != null )
+				return value;
+		}
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	//---- class FlatSplitPaneDivider -----------------------------------------
 
 	protected class FlatSplitPaneDivider
@@ -192,20 +211,21 @@ public class FlatSplitPaneUI
 			setLayout( new FlatDividerLayout() );
 		}
 
-		/**
+		/** @since 2 */
-		 * @since 2
-		 */
 		protected Object applyStyleProperty( String key, Object value ) {
 			return FlatStylingSupport.applyToAnnotatedObject( this, key, value );
 		}
 
-		/**
+		/** @since 2 */
-		 * @since 2
-		 */
 		public Map<String, Class<?>> getStyleableInfos() {
 			return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 		}
 
+		/** @since 2.5 */
+		public Object getStyleableValue( String key ) {
+			return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+		}
+
 		void updateStyle() {
 			if( leftButton instanceof FlatOneTouchButton )
 				((FlatOneTouchButton)leftButton).updateStyle();
@@ -235,7 +255,7 @@ public class FlatSplitPaneUI
 			switch( e.getPropertyName() ) {
 				case JSplitPane.DIVIDER_LOCATION_PROPERTY:
 					// necessary to show/hide one-touch buttons on expand/collapse
-					revalidate();
+					doLayout();
 					break;
 			}
 		}
@@ -345,7 +365,7 @@ public class FlatSplitPaneUI
 				if( leftButton == null || rightButton == null || !splitPane.isOneTouchExpandable() )
 					return;
 
-				// increase side of buttons, which makes them easier to hit by the user
+				// increase size of buttons, which makes them easier to hit by the user
 				// and avoids cut arrows at small divider sizes
 				int extraSize = UIScale.scale( 4 );
 				if( orientation == JSplitPane.VERTICAL_SPLIT ) {
@@ -360,10 +380,19 @@ public class FlatSplitPaneUI
 
 				// hide buttons if not applicable
 				boolean leftCollapsed = isLeftCollapsed();
-				if( leftCollapsed )
+				boolean rightCollapsed = isRightCollapsed();
+				if( leftCollapsed || rightCollapsed ) {
+					leftButton.setVisible( !leftCollapsed );
+					rightButton.setVisible( !rightCollapsed );
+				} else {
+					Object expandableSide = splitPane.getClientProperty( FlatClientProperties.SPLIT_PANE_EXPANDABLE_SIDE );
+					leftButton.setVisible( expandableSide == null || !FlatClientProperties.SPLIT_PANE_EXPANDABLE_SIDE_LEFT.equals( expandableSide ) );
+					rightButton.setVisible( expandableSide == null || !FlatClientProperties.SPLIT_PANE_EXPANDABLE_SIDE_RIGHT.equals( expandableSide ) );
+				}
+
+				// move right button if left button is hidden
+				if( !leftButton.isVisible() )
 					rightButton.setLocation( leftButton.getLocation() );
-				leftButton.setVisible( !leftCollapsed );
-				rightButton.setVisible( !isRightCollapsed() );
 			}
 		}
 	}

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatStylingSupport.java

@@ -18,9 +18,11 @@ package com.formdev.flatlaf.ui;
 
 import java.beans.PropertyChangeListener;
 import java.lang.annotation.ElementType;
+import java.lang.annotation.Repeatable;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
+import java.lang.invoke.MethodHandles;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
@@ -63,15 +65,55 @@ public class FlatStylingSupport
 		Class<?> type() default Void.class;
 	}
 
+	/**
+	 * Indicates that a field in the specified (super) class
+	 * is intended to be used by FlatLaf styling support.
+	 * <p>
+	 * Use this annotation, instead of {@link Styleable}, to style fields
+	 * in superclasses, where it is not possible to use {@link Styleable}.
+	 * <p>
+	 * Classes using this annotation may implement {@link StyleableLookupProvider}
+	 * to give access to protected fields (in JRE) in modular applications.
+	 *
+	 * @since 2.5
+	 */
+	@Target(ElementType.TYPE)
+	@Retention(RetentionPolicy.RUNTIME)
+	@Repeatable(StyleableFields.class)
+	public @interface StyleableField {
+		Class<?> cls();
+		String key();
+		String fieldName() default "";
+	}
+
+	/**
+	 * Container annotation for {@link StyleableField}.
+	 *
+	 * @since 2.5
+	 */
+	@Target(ElementType.TYPE)
+	@Retention(RetentionPolicy.RUNTIME)
+	public @interface StyleableFields {
+		StyleableField[] value();
+	}
+
+
 	/** @since 2 */
 	public interface StyleableUI {
 		Map<String, Class<?>> getStyleableInfos( JComponent c );
+		/** @since 2.5 */ Object getStyleableValue( JComponent c, String key );
 	}
 
 	/** @since 2 */
 	public interface StyleableBorder {
 		Object applyStyleProperty( String key, Object value );
 		Map<String, Class<?>> getStyleableInfos();
+		/** @since 2.5 */ Object getStyleableValue( String key );
+	}
+
+	/** @since 2.5 */
+	public interface StyleableLookupProvider {
+		MethodHandles.Lookup getLookupForStyling();
 	}
 
 
@@ -365,21 +407,25 @@ public class FlatStylingSupport
 	public static Object applyToAnnotatedObject( Object obj, String key, Object value )
 		throws UnknownStyleException, IllegalArgumentException
 	{
-		String fieldName = key;
+		String fieldName = keyToFieldName( key );
-		int dotIndex = key.indexOf( '.' );
-		if( dotIndex >= 0 ) {
-			// remove first dot in key and change subsequent character to uppercase
-			fieldName = key.substring( 0, dotIndex )
-				+ Character.toUpperCase( key.charAt( dotIndex + 1 ) )
-				+ key.substring( dotIndex + 2 );
-		}
 
 		return applyToField( obj, fieldName, key, value, field -> {
 			Styleable styleable = field.getAnnotation( Styleable.class );
-			return styleable != null && styleable.dot() == (dotIndex >= 0);
+			return styleable != null && styleable.dot() == (fieldName != key);
 		} );
 	}
 
+	private static String keyToFieldName( String key ) {
+		int dotIndex = key.indexOf( '.' );
+		if( dotIndex < 0 )
+			return key;
+
+		// remove first dot in key and change subsequent character to uppercase
+		return key.substring( 0, dotIndex )
+			+ Character.toUpperCase( key.charAt( dotIndex + 1 ) )
+			+ key.substring( dotIndex + 2 );
+	}
+
 	/**
 	 * Applies the given value to a field of the given object.
 	 *
@@ -405,26 +451,17 @@ public class FlatStylingSupport
 		for(;;) {
 			try {
 				Field f = cls.getDeclaredField( fieldName );
-				if( predicate == null || predicate.test( f ) ) {
+				if( predicate == null || predicate.test( f ) )
-					if( !isValidField( f ) )
+					return applyToField( f, obj, value, false );
-						throw new IllegalArgumentException( "field '" + cls.getName() + "." + fieldName + "' is final or static" );
-
-					try {
-						// necessary to access protected fields in other packages
-						f.setAccessible( true );
-
-						// get old value and set new value
-						Object oldValue = f.get( obj );
-						f.set( obj, convertToEnum( value, f.getType() ) );
-						return oldValue;
-					} catch( IllegalAccessException ex ) {
-						throw new IllegalArgumentException( "failed to access field '" + cls.getName() + "." + fieldName + "'", ex );
-					}
-				}
 			} catch( NoSuchFieldException ex ) {
 				// field not found in class --> try superclass
 			}
 
+			for( StyleableField styleableField : cls.getAnnotationsByType( StyleableField.class ) ) {
+				if( key.equals( styleableField.key() ) )
+					return applyToField( getStyleableField( styleableField ), obj, value, true );
+			}
+
 			cls = cls.getSuperclass();
 			if( cls == null )
 				throw new UnknownStyleException( key );
@@ -437,11 +474,83 @@ public class FlatStylingSupport
 		}
 	}
 
+	private static Object applyToField( Field f, Object obj, Object value, boolean useMethodHandles ) {
+		checkValidField( f );
+
+		if( useMethodHandles && obj instanceof StyleableLookupProvider ) {
+			try {
+				// use method handles to access protected fields in JRE in modular applications
+				MethodHandles.Lookup lookup = ((StyleableLookupProvider)obj).getLookupForStyling();
+
+				// get old value and set new value
+				Object oldValue = lookup.unreflectGetter( f ).invoke( obj );
+				lookup.unreflectSetter( f ).invoke( obj, convertToEnum( value, f.getType() ) );
+				return oldValue;
+			} catch( Throwable ex ) {
+				throw newFieldAccessFailed( f, ex );
+			}
+		}
+
+		try {
+			// necessary to access protected fields in other packages
+			f.setAccessible( true );
+
+			// get old value and set new value
+			Object oldValue = f.get( obj );
+			f.set( obj, convertToEnum( value, f.getType() ) );
+			return oldValue;
+		} catch( IllegalAccessException ex ) {
+			throw newFieldAccessFailed( f, ex );
+		}
+	}
+
+	private static Object getFieldValue( Field f, Object obj, boolean useMethodHandles ) {
+		checkValidField( f );
+
+		if( useMethodHandles && obj instanceof StyleableLookupProvider ) {
+			// use method handles to access protected fields in JRE in modular applications
+			try {
+				MethodHandles.Lookup lookup = ((StyleableLookupProvider)obj).getLookupForStyling();
+				return lookup.unreflectGetter( f ).invoke( obj );
+			} catch( Throwable ex ) {
+				throw newFieldAccessFailed( f, ex );
+			}
+		}
+
+		try {
+			f.setAccessible( true );
+			return f.get( obj );
+		} catch( IllegalAccessException ex ) {
+			throw newFieldAccessFailed( f, ex );
+		}
+	}
+
+	private static IllegalArgumentException newFieldAccessFailed( Field f, Throwable ex ) {
+		return new IllegalArgumentException( "failed to access field '" + f.getDeclaringClass().getName() + "." + f.getName() + "'", ex );
+	}
+
+	private static void checkValidField( Field f ) {
+		if( !isValidField( f ) )
+			throw new IllegalArgumentException( "field '" + f.getDeclaringClass().getName() + "." + f.getName() + "' is final or static" );
+	}
+
 	private static boolean isValidField( Field f ) {
 		int modifiers = f.getModifiers();
 		return (modifiers & (Modifier.FINAL|Modifier.STATIC)) == 0 && !f.isSynthetic();
 	}
 
+	private static Field getStyleableField( StyleableField styleableField ) {
+		String fieldName = styleableField.fieldName();
+		if( fieldName.isEmpty() )
+			fieldName = styleableField.key();
+
+		try {
+			return styleableField.cls().getDeclaredField( fieldName );
+		} catch( NoSuchFieldException ex ) {
+			throw new IllegalArgumentException( "field '" + styleableField.cls().getName() + "." + fieldName + "' not found", ex );
+		}
+	}
+
 	/**
 	 * Applies the given value to a property of the given object.
 	 * Works only for properties that have public getter and setter methods.
@@ -628,6 +737,7 @@ public class FlatStylingSupport
 		Class<?> cls = obj.getClass();
 
 		for(;;) {
+			// find fields annotated with 'Styleable'
 			for( Field f : cls.getDeclaredFields() ) {
 				if( !isValidField( f ) )
 					continue;
@@ -666,6 +776,20 @@ public class FlatStylingSupport
 				infos.put( name, type );
 			}
 
+			// get fields specified in 'StyleableField' annotation
+			for( StyleableField styleableField : cls.getAnnotationsByType( StyleableField.class ) ) {
+				String name = styleableField.key();
+
+				// for the case that the same field name is used in a class and in
+				// one of its superclasses, do not process field in superclass
+				if( processedFields.contains( name ) )
+					continue;
+				processedFields.add( name );
+
+				Field f = getStyleableField( styleableField );
+				infos.put( name, f.getType() );
+			}
+
 			cls = cls.getSuperclass();
 			if( cls == null )
 				return;
@@ -686,6 +810,52 @@ public class FlatStylingSupport
 			infos.put( keyPrefix.concat( e.getKey() ), e.getValue() );
 	}
 
+	public static Object getAnnotatedStyleableValue( Object obj, String key ) {
+		String fieldName = keyToFieldName( key );
+		Class<?> cls = obj.getClass();
+
+		for(;;) {
+			try {
+				// find field annotated with 'Styleable'
+				Field f = cls.getDeclaredField( fieldName );
+				Styleable styleable = f.getAnnotation( Styleable.class );
+				if( styleable != null ) {
+					if( styleable.dot() != (fieldName != key) )
+						throw new IllegalArgumentException( "'Styleable.dot' on field '" + fieldName + "' does not match key '" + key + "'" );
+					if( styleable.type() != Void.class )
+						throw new IllegalArgumentException( "'Styleable.type' on field '" + fieldName + "' not supported" );
+
+					return getFieldValue( f, obj, false );
+				}
+			} catch( NoSuchFieldException ex ) {
+				// field not found in class --> try superclass
+			}
+
+			// find field specified in 'StyleableField' annotation
+			for( StyleableField styleableField : cls.getAnnotationsByType( StyleableField.class ) ) {
+				if( key.equals( styleableField.key() ) )
+					return getFieldValue( getStyleableField( styleableField ), obj, true );
+			}
+
+			cls = cls.getSuperclass();
+			if( cls == null )
+				return null;
+
+			String superclassName = cls.getName();
+			if( superclassName.startsWith( "java." ) || superclassName.startsWith( "javax." ) )
+				return null;
+		}
+	}
+
+	public static Object getAnnotatedStyleableValue( Object obj, Border border, String key ) {
+		if( border instanceof StyleableBorder ) {
+			Object value = ((StyleableBorder)border).getStyleableValue( key );
+			if( value != null )
+				return value;
+		}
+		return getAnnotatedStyleableValue( obj, key );
+	}
+
 	//---- class UnknownStyleException ----------------------------------------
 
 	public static class UnknownStyleException

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTabbedPaneUI.java

@@ -59,6 +59,7 @@ import java.util.Map;
 import java.util.Set;
 import java.util.function.BiConsumer;
 import java.util.function.IntConsumer;
+import java.util.function.Predicate;
 import javax.accessibility.Accessible;
 import javax.accessibility.AccessibleContext;
 import javax.swing.Action;
@@ -82,10 +83,12 @@ import javax.swing.event.ChangeListener;
 import javax.swing.event.PopupMenuEvent;
 import javax.swing.event.PopupMenuListener;
 import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.TabbedPaneUI;
 import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicTabbedPaneUI;
 import javax.swing.text.JTextComponent;
 import javax.swing.text.View;
+import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.icons.FlatTabbedPaneCloseIcon;
 import com.formdev.flatlaf.ui.FlatStylingSupport.Styleable;
@@ -127,6 +130,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault TabbedPane.selectedBackground				Color	optional
  * @uiDefault TabbedPane.selectedForeground				Color
  * @uiDefault TabbedPane.underlineColor					Color
+ * @uiDefault TabbedPane.inactiveUnderlineColor			Color
  * @uiDefault TabbedPane.disabledUnderlineColor			Color
  * @uiDefault TabbedPane.hoverColor						Color
  * @uiDefault TabbedPane.focusColor						Color
@@ -141,7 +145,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault TabbedPane.showTabSeparators				boolean
  * @uiDefault TabbedPane.tabSeparatorsFullHeight		boolean
  * @uiDefault TabbedPane.hasFullBorder					boolean
- * @uiDefault TabbedPane.activeTabBorder				boolean
+ * @uiDefault TabbedPane.rotateTabRuns					boolean
  *
  * @uiDefault TabbedPane.tabLayoutPolicy				String	wrap (default) or scroll
  * @uiDefault TabbedPane.tabType						String	underlined (default) or card
@@ -198,6 +202,7 @@ public class FlatTabbedPaneUI
 	@Styleable protected Color selectedBackground;
 	@Styleable protected Color selectedForeground;
 	@Styleable protected Color underlineColor;
+	/** @since 2.2 */ @Styleable protected Color inactiveUnderlineColor;
 	@Styleable protected Color disabledUnderlineColor;
 	@Styleable protected Color hoverColor;
 	@Styleable protected Color focusColor;
@@ -215,6 +220,7 @@ public class FlatTabbedPaneUI
 	@Styleable protected boolean tabSeparatorsFullHeight;
 	@Styleable protected boolean hasFullBorder;
 	@Styleable protected boolean tabsOpaque = true;
+	/** @since 2.5 */ @Styleable protected boolean rotateTabRuns = true;
 
 	@Styleable(type=String.class) private int tabType;
 	@Styleable(type=String.class) private int tabsPopupPolicy;
@@ -288,6 +294,7 @@ public class FlatTabbedPaneUI
 
 		super.installUI( c );
 
+		FlatSelectedTabRepainter.install();
 		installStyle();
 	}
 
@@ -318,6 +325,7 @@ public class FlatTabbedPaneUI
 		selectedBackground = UIManager.getColor( "TabbedPane.selectedBackground" );
 		selectedForeground = UIManager.getColor( "TabbedPane.selectedForeground" );
 		underlineColor = UIManager.getColor( "TabbedPane.underlineColor" );
+		inactiveUnderlineColor = FlatUIUtils.getUIColor( "TabbedPane.inactiveUnderlineColor", underlineColor );
 		disabledUnderlineColor = UIManager.getColor( "TabbedPane.disabledUnderlineColor" );
 		hoverColor = UIManager.getColor( "TabbedPane.hoverColor" );
 		focusColor = UIManager.getColor( "TabbedPane.focusColor" );
@@ -335,6 +343,7 @@ public class FlatTabbedPaneUI
 		tabSeparatorsFullHeight = UIManager.getBoolean( "TabbedPane.tabSeparatorsFullHeight" );
 		hasFullBorder = UIManager.getBoolean( "TabbedPane.hasFullBorder" );
 		tabsOpaque = UIManager.getBoolean( "TabbedPane.tabsOpaque" );
+		rotateTabRuns = FlatUIUtils.getUIBoolean( "TabbedPane.rotateTabRuns", true );
 
 		tabType = parseTabType( UIManager.getString( "TabbedPane.tabType" ) );
 		tabsPopupPolicy = parseTabsPopupPolicy( UIManager.getString( "TabbedPane.tabsPopupPolicy" ) );
@@ -385,6 +394,7 @@ public class FlatTabbedPaneUI
 		selectedBackground = null;
 		selectedForeground = null;
 		underlineColor = null;
+		inactiveUnderlineColor = null;
 		disabledUnderlineColor = null;
 		hoverColor = null;
 		focusColor = null;
@@ -679,6 +689,76 @@ public class FlatTabbedPaneUI
 		return infos;
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		// close icon
+		if( key.startsWith( "close" ) ) {
+			return (closeIcon instanceof FlatTabbedPaneCloseIcon)
+				? ((FlatTabbedPaneCloseIcon)closeIcon).getStyleableValue( key )
+				: null;
+		}
+
+		switch( key ) {
+			// BasicTabbedPaneUI
+			case "tabInsets":		return tabInsets;
+			case "tabAreaInsets":	return tabAreaInsets;
+			case "textIconGap":		return textIconGapUnscaled;
+
+			// FlatTabbedPaneUI
+			case "tabType":
+				switch( tabType ) {
+					default:
+					case TAB_TYPE_UNDERLINED:	return TABBED_PANE_TAB_TYPE_UNDERLINED;
+					case TAB_TYPE_CARD:			return TABBED_PANE_TAB_TYPE_CARD;
+				}
+
+			case "tabsPopupPolicy":
+				switch( tabsPopupPolicy ) {
+					default:
+					case AS_NEEDED:				return TABBED_PANE_POLICY_AS_NEEDED;
+					case NEVER:					return TABBED_PANE_POLICY_NEVER;
+				}
+
+			case "scrollButtonsPolicy":
+				switch( scrollButtonsPolicy ) {
+					default:
+					case AS_NEEDED_SINGLE:		return TABBED_PANE_POLICY_AS_NEEDED_SINGLE;
+					case AS_NEEDED:				return TABBED_PANE_POLICY_AS_NEEDED;
+					case NEVER:					return TABBED_PANE_POLICY_NEVER;
+				}
+
+			case "scrollButtonsPlacement":
+				switch( scrollButtonsPlacement ) {
+					default:
+					case BOTH:					return TABBED_PANE_PLACEMENT_BOTH;
+					case TRAILING:				return TABBED_PANE_PLACEMENT_TRAILING;
+				}
+
+			case "tabAreaAlignment":	return alignmentToString( tabAreaAlignment, TABBED_PANE_ALIGN_LEADING );
+			case "tabAlignment":			return alignmentToString( tabAlignment, TABBED_PANE_ALIGN_CENTER );
+
+			case "tabWidthMode":
+				switch( tabWidthMode ) {
+					default:
+					case WIDTH_MODE_PREFERRED:	return TABBED_PANE_TAB_WIDTH_MODE_PREFERRED;
+					case WIDTH_MODE_EQUAL:		return TABBED_PANE_TAB_WIDTH_MODE_EQUAL;
+					case WIDTH_MODE_COMPACT:	return TABBED_PANE_TAB_WIDTH_MODE_COMPACT;
+				}
+
+			case "tabIconPlacement":
+				switch( tabIconPlacement ) {
+					default:
+					case LEADING:				return "leading";
+					case TRAILING:				return "trailing";
+					case TOP:					return "top";
+					case BOTTOM:				return "bottom";
+				}
+		}
+
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	protected void setRolloverTab( int x, int y ) {
 		setRolloverTab( tabForCoordinate( tabPane, x, y ) );
 	}
@@ -733,7 +813,6 @@ public class FlatTabbedPaneUI
 
 		// increase size of repaint region to include part of content border
 		if( contentSeparatorHeight > 0 &&
-			getTabType() == TAB_TYPE_CARD &&
 			clientPropertyBoolean( tabPane, TABBED_PANE_SHOW_CONTENT_SEPARATOR, true ) )
 		{
 			int sh = scale( contentSeparatorHeight );
@@ -1015,7 +1094,7 @@ public class FlatTabbedPaneUI
 
 		// paint selection indicator
 		if( isSelected )
-			paintTabSelection( g, tabPlacement, x, y, w, h );
+			paintTabSelection( g, tabPlacement, tabIndex, x, y, w, h );
 
 		if( tabPane.getTabComponentAt( tabIndex ) != null )
 			return;
@@ -1204,12 +1283,19 @@ public class FlatTabbedPaneUI
 		}
 	}
 
-	protected void paintTabSelection( Graphics g, int tabPlacement, int x, int y, int w, int h ) {
+	protected void paintTabSelection( Graphics g, int tabPlacement, int tabIndex, int x, int y, int w, int h ) {
-		g.setColor( tabPane.isEnabled() ? underlineColor : disabledUnderlineColor );
+		g.setColor( tabPane.isEnabled()
+			? (isTabbedPaneOrChildFocused() ? underlineColor : inactiveUnderlineColor)
+			: disabledUnderlineColor );
 
 		// paint underline selection
 		boolean atBottom = (getTabType() != TAB_TYPE_CARD);
-		Insets contentInsets = getContentBorderInsets( tabPlacement );
+		Insets contentInsets = atBottom
+			? ((!rotateTabRuns && runCount > 1 && !isScrollTabLayout() && getRunForTab( tabPane.getTabCount(), tabIndex ) > 0)
+				? new Insets( 0, 0, 0, 0 )
+				: getContentBorderInsets( tabPlacement ))
+			: null;
+
 		int tabSelectionHeight = scale( atBottom ? this.tabSelectionHeight : cardTabSelectionHeight );
 		int sx, sy;
 		switch( tabPlacement ) {
@@ -1236,6 +1322,23 @@ public class FlatTabbedPaneUI
 		}
 	}
 
+	/** @since 2.2 */
+	@SuppressWarnings( "unchecked" )
+	protected boolean isTabbedPaneOrChildFocused() {
+		KeyboardFocusManager keyboardFocusManager = KeyboardFocusManager.getCurrentKeyboardFocusManager();
+
+		Object value = tabPane.getClientProperty( FlatClientProperties.COMPONENT_FOCUS_OWNER );
+		if( value instanceof Predicate ) {
+			return ((Predicate<JComponent>)value).test( tabPane ) &&
+				FlatUIUtils.isInActiveWindow( tabPane, keyboardFocusManager.getActiveWindow() );
+		}
+
+		Component focusOwner = keyboardFocusManager.getPermanentFocusOwner();
+		return focusOwner != null &&
+			SwingUtilities.isDescendingFrom( focusOwner, tabPane ) &&
+			FlatUIUtils.isInActiveWindow( focusOwner, keyboardFocusManager.getActiveWindow() );
+	}
+
 	/**
 	 * Actually does nearly the same as super.paintContentBorder() but
 	 *   - not using UIManager.getColor("TabbedPane.contentAreaColor") to be GUI builder friendly
@@ -1351,7 +1454,7 @@ public class FlatTabbedPaneUI
 			else
 				g.clipRect( 0, vr.y, tabPane.getWidth(), vr.height );
 
-			paintTabSelection( g, tabPlacement, tabRect.x, tabRect.y, tabRect.width, tabRect.height );
+			paintTabSelection( g, tabPlacement, selectedIndex, tabRect.x, tabRect.y, tabRect.width, tabRect.height );
 			g.setClip( oldClip );
 		}
 	}
@@ -1504,6 +1607,11 @@ public class FlatTabbedPaneUI
 		super.getTabRunCount( tabPane );
 	}
 
+	@Override
+	protected boolean shouldRotateTabRuns( int tabPlacement ) {
+		return rotateTabRuns;
+	}
+
 	private boolean isLastInRun( int tabIndex ) {
 		int run = getRunForTab( tabPane.getTabCount(), tabIndex );
 		return lastTabInRun( tabPane.getTabCount(), run ) == tabIndex;
@@ -1659,6 +1767,16 @@ public class FlatTabbedPaneUI
 		}
 	}
 
+	private static String alignmentToString( int value, String defaultValue ) {
+		switch( value ) {
+			case LEADING:		return TABBED_PANE_ALIGN_LEADING;
+			case TRAILING:		return TABBED_PANE_ALIGN_TRAILING;
+			case CENTER:		return TABBED_PANE_ALIGN_CENTER;
+			case FILL:			return TABBED_PANE_ALIGN_FILL;
+			default:			return defaultValue;
+		}
+	}
+
 	protected static int parseTabWidthMode( String str ) {
 		if( str == null )
 			return WIDTH_MODE_PREFERRED;
@@ -2471,7 +2589,7 @@ public class FlatTabbedPaneUI
 		public void mousePressed( MouseEvent e ) {
 			updateRollover( e );
 
-			if( !isPressedTabClose() )
+			if( !isPressedTabClose() && SwingUtilities.isLeftMouseButton( e ) )
 				mouseDelegate.mousePressed( e );
 		}
 
@@ -2526,7 +2644,7 @@ public class FlatTabbedPaneUI
 
 			// check whether mouse hit tab close area
 			boolean hitClose = isTabClosable( tabIndex ) && getTabCloseHitArea( tabIndex ).contains( x, y );
-			if( e.getID() == MouseEvent.MOUSE_PRESSED )
+			if( e.getID() == MouseEvent.MOUSE_PRESSED && SwingUtilities.isLeftMouseButton( e ) )
 				pressedTabIndex = hitClose ? tabIndex : -1;
 			setRolloverTabClose( hitClose );
 			setPressedTabClose( hitClose && tabIndex == pressedTabIndex );
@@ -3341,4 +3459,77 @@ public class FlatTabbedPaneUI
 				delegate.actionPerformed( e );
 		}
 	}
+
+	//---- class FlatSelectedTabRepainter -------------------------------------
+
+	private static class FlatSelectedTabRepainter
+		implements PropertyChangeListener//, Runnable
+	{
+		private static FlatSelectedTabRepainter instance;
+
+		private KeyboardFocusManager keyboardFocusManager;
+
+		static void install() {
+			synchronized( FlatSelectedTabRepainter.class ) {
+				if( instance != null )
+					return;
+
+				instance = new FlatSelectedTabRepainter();
+			}
+		}
+
+		FlatSelectedTabRepainter() {
+			keyboardFocusManager = KeyboardFocusManager.getCurrentKeyboardFocusManager();
+			keyboardFocusManager.addPropertyChangeListener( this );
+		}
+
+		private void uninstall() {
+			synchronized( FlatSelectedTabRepainter.class ) {
+				if( instance == null )
+					return;
+
+				keyboardFocusManager.removePropertyChangeListener( this );
+				keyboardFocusManager = null;
+				instance = null;
+			}
+		}
+
+		@Override
+		public void propertyChange( PropertyChangeEvent e ) {
+			// uninstall if no longer using FlatLaf
+			if( !(UIManager.getLookAndFeel() instanceof FlatLaf) ) {
+				uninstall();
+				return;
+			}
+
+			switch( e.getPropertyName() ) {
+				case "permanentFocusOwner":
+					Object oldValue = e.getOldValue();
+					Object newValue = e.getNewValue();
+					if( oldValue instanceof Component )
+						repaintSelectedTabs( (Component) oldValue );
+					if( newValue instanceof Component )
+						repaintSelectedTabs( (Component) newValue );
+					break;
+
+				case "activeWindow":
+					repaintSelectedTabs( keyboardFocusManager.getPermanentFocusOwner() );
+					break;
+			}
+		}
+
+		private void repaintSelectedTabs( Component c ) {
+			if( c instanceof JTabbedPane )
+				repaintSelectedTab( (JTabbedPane) c );
+
+			while( (c = SwingUtilities.getAncestorOfClass( JTabbedPane.class, c )) != null )
+				repaintSelectedTab( (JTabbedPane) c );
+		}
+
+		private void repaintSelectedTab( JTabbedPane tabbedPane ) {
+			TabbedPaneUI ui = tabbedPane.getUI();
+			if( ui instanceof FlatTabbedPaneUI )
+				((FlatTabbedPaneUI) ui).repaintTab( tabbedPane.getSelectedIndex() );
+		}
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableHeaderUI.java

@@ -39,7 +39,9 @@ import javax.swing.event.MouseInputListener;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicTableHeaderUI;
+import javax.swing.table.JTableHeader;
 import javax.swing.table.TableCellRenderer;
+import javax.swing.table.TableColumn;
 import javax.swing.table.TableColumnModel;
 import com.formdev.flatlaf.ui.FlatStylingSupport.Styleable;
 import com.formdev.flatlaf.ui.FlatStylingSupport.StyleableUI;
@@ -169,6 +171,22 @@ public class FlatTableHeaderUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		if( key.equals( "sortIconPosition" ) ) {
+			switch( sortIconPosition ) {
+				default:
+				case SwingConstants.RIGHT:	return "right";
+				case SwingConstants.LEFT:	return "left";
+				case SwingConstants.TOP:	return "top";
+				case SwingConstants.BOTTOM:	return "bottom";
+			}
+		}
+
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	private static int parseSortIconPosition( String str ) {
 		if( str == null )
 			str = "";
@@ -195,6 +213,8 @@ public class FlatTableHeaderUI
 
 	@Override
 	public void paint( Graphics g, JComponent c ) {
+		fixDraggedAndResizingColumns( header );
+
 		TableColumnModel columnModel = header.getColumnModel();
 		if( columnModel.getColumnCount() <= 0 )
 			return;
@@ -269,6 +289,32 @@ public class FlatTableHeaderUI
 		return size;
 	}
 
+	static void fixDraggedAndResizingColumns( JTableHeader header ) {
+		if( header == null )
+			return;
+
+		// Dragged column may be outdated in the case that the table structure
+		// was changed from a table header popup menu action. In this case
+		// the paint methods in BasicTableHeaderUI and BasicTableUI would throw exceptions.
+		TableColumn draggedColumn = header.getDraggedColumn();
+		if( draggedColumn != null && !isValidColumn( header.getColumnModel(), draggedColumn ) )
+			header.setDraggedColumn( null );
+
+		// also clear outdated resizing column (although this seems not cause exceptions)
+		TableColumn resizingColumn = header.getResizingColumn();
+		if( resizingColumn != null && !isValidColumn( header.getColumnModel(), resizingColumn ) )
+			header.setResizingColumn( null );
+	}
+
+	private static boolean isValidColumn( TableColumnModel cm, TableColumn column ) {
+		int count = cm.getColumnCount();
+		for( int i = 0; i < count; i++ ) {
+			if( cm.getColumn( i ) == column )
+				return true;
+		}
+		return false;
+	}
+
 	//---- class FlatTableCellHeaderRenderer ----------------------------------
 
 	/**

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableUI.java

@@ -80,6 +80,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Table.intercellSpacing					Dimension
  * @uiDefault Table.selectionInactiveBackground			Color
  * @uiDefault Table.selectionInactiveForeground			Color
+ * @uiDefault Table.paintOutsideAlternateRows			boolean
  *
  * <!-- FlatTableCellBorder -->
  *
@@ -95,7 +96,7 @@ import com.formdev.flatlaf.util.UIScale;
  */
 public class FlatTableUI
 	extends BasicTableUI
-	implements StyleableUI
+	implements StyleableUI, FlatViewportUI.ViewportPainter
 {
 	protected boolean showHorizontalLines;
 	protected boolean showVerticalLines;
@@ -285,6 +286,12 @@ public class FlatTableUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	/**
 	 * Toggle selection colors from focused to inactive and vice versa.
 	 *
@@ -313,6 +320,8 @@ public class FlatTableUI
 
 	@Override
 	public void paint( Graphics g, JComponent c ) {
+		FlatTableHeaderUI.fixDraggedAndResizingColumns( table.getTableHeader() );
+
 		boolean horizontalLines = table.getShowHorizontalLines();
 		boolean verticalLines = table.getShowVerticalLines();
 		if( horizontalLines || verticalLines ) {
@@ -421,4 +430,38 @@ public class FlatTableUI
 			? (viewport != rowHeader)
 			: (viewport == rowHeader || rowHeader == null);
 	}
+
+	/** @since 2.3 */
+	@Override
+	public void paintViewport( Graphics g, JComponent c, JViewport viewport ) {
+		int viewportWidth = viewport.getWidth();
+		int viewportHeight = viewport.getHeight();
+
+		// fill viewport background in same color as table background
+		if( viewport.isOpaque() ) {
+			g.setColor( table.getBackground() );
+			g.fillRect( 0, 0, viewportWidth, viewportHeight );
+		}
+
+		// paint alternating empty rows
+		boolean paintOutside = UIManager.getBoolean( "Table.paintOutsideAlternateRows" );
+		Color alternateColor;
+		if( paintOutside && (alternateColor = UIManager.getColor( "Table.alternateRowColor" )) != null ) {
+			g.setColor( alternateColor );
+
+			int rowCount = table.getRowCount();
+
+			// paint alternating empty rows below the table
+			int tableHeight = table.getHeight();
+			if( tableHeight < viewportHeight ) {
+				int tableWidth = table.getWidth();
+				int rowHeight = table.getRowHeight();
+
+				for( int y = tableHeight, row = rowCount; y < viewportHeight; y += rowHeight, row++ ) {
+					if( row % 2 != 0 )
+						g.fillRect( 0, y, tableWidth, rowHeight );
+				}
+			}
+		}
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTextAreaUI.java

@@ -86,6 +86,13 @@ public class FlatTextAreaUI
 
 	@Override
 	public void installUI( JComponent c ) {
+		if( FlatUIUtils.needsLightAWTPeer( c ) )
+			FlatUIUtils.runWithLightAWTPeerUIDefaults( () -> installUIImpl( c ) );
+		else
+			installUIImpl( c );
+	}
+
+	private void installUIImpl( JComponent c ) {
 		super.installUI( c );
 
 		installStyle();
@@ -183,6 +190,12 @@ public class FlatTextAreaUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	private void updateBackground() {
 		FlatTextFieldUI.updateBackground( getComponent(), background,
 			disabledBackground, inactiveBackground,

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTextFieldUI.java

@@ -128,6 +128,13 @@ public class FlatTextFieldUI
 
 	@Override
 	public void installUI( JComponent c ) {
+		if( FlatUIUtils.needsLightAWTPeer( c ) )
+			FlatUIUtils.runWithLightAWTPeerUIDefaults( () -> installUIImpl( c ) );
+		else
+			installUIImpl( c );
+	}
+
+	private void installUIImpl( JComponent c ) {
 		super.installUI( c );
 
 		leadingIcon = clientProperty( c, TEXT_FIELD_LEADING_ICON, null, Icon.class );
@@ -354,6 +361,12 @@ public class FlatTextFieldUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this, getComponent().getBorder() );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, getComponent().getBorder(), key );
+	}
+
 	private void updateBackground() {
 		updateBackground( getComponent(), background,
 			disabledBackground, inactiveBackground,

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTextPaneUI.java

@@ -191,6 +191,12 @@ public class FlatTextPaneUI
 		return FlatStylingSupport.getAnnotatedStyleableInfos( this );
 	}
 
+	/** @since 2.5 */
+	@Override
+	public Object getStyleableValue( JComponent c, String key ) {
+		return FlatStylingSupport.getAnnotatedStyleableValue( this, key );
+	}
+
 	private void updateBackground() {
 		FlatTextFieldUI.updateBackground( getComponent(), background,
 			disabledBackground, inactiveBackground,