release 1.6.5

- oversized text if system font is "Inter" (issue #427)
- missing text if system font is "Cantarell" (on Fedora)

.gitbugtraq

@@ -0,0 +1,8 @@
+# links issue numbers in git commit messages to issue tracker 
+# https://github.com/mstrap/bugtraq
+# for SmartGit - https://www.syntevo.com/smartgit/
+
+[bugtraq]
+url = "https://github.com/JFormDesigner/FlatLaf/issues/%BUGID%"
+loglinkregex = "#[0-9]{1,5}"
+logregex = "[0-9]{1,5}"

.github/workflows/ci.yml

@@ -34,6 +34,7 @@ jobs:
       - uses: actions/checkout@v2
 
       - uses: gradle/wrapper-validation-action@v1
+        if: matrix.java == '1.8'
 
       - name: Setup Java ${{ matrix.java }}
         uses: actions/setup-java@v1
@@ -72,7 +73,7 @@ jobs:
     needs: build
     if: |
       github.event_name == 'push' &&
-      github.ref == 'refs/heads/main' &&
+      (github.ref == 'refs/heads/main' || startsWith( github.ref, 'refs/heads/develop-' )) &&
       github.repository == 'JFormDesigner/FlatLaf'
 
     steps:
@@ -97,11 +98,22 @@ jobs:
           restore-keys: ${{ runner.os }}-gradle
 
       - name: Publish snapshot to oss.sonatype.org
-        run: ./gradlew publish -Dorg.gradle.internal.publish.checksums.insecure=true
+        run: ./gradlew publish :flatlaf-theme-editor:build -Dorg.gradle.internal.publish.checksums.insecure=true
         env:
           OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
           OSSRH_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
 
+      - name: Upload theme editor
+        uses: sebastianpopp/ftp-action@releases/v2
+        with:
+          host: ${{ secrets.FTP_SERVER }}
+          user: ${{ secrets.FTP_USERNAME }}
+          password: ${{ secrets.FTP_PASSWORD }}
+          forceSsl: true
+          localDir: "flatlaf-theme-editor/build/libs"
+          remoteDir: "snapshots"
+          options: "--only-newer --no-recursion --verbose=1"
+
 
   release:
     runs-on: ubuntu-latest
@@ -133,7 +145,7 @@ jobs:
           restore-keys: ${{ runner.os }}-gradle
 
       - name: Release a new stable version to Maven Central
-        run: ./gradlew publish :flatlaf-demo:build -Drelease=true
+        run: ./gradlew publish :flatlaf-demo:build :flatlaf-theme-editor:build -Drelease=true
         env:
           OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
           OSSRH_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
@@ -150,3 +162,14 @@ jobs:
           localDir: "flatlaf-demo/build/libs"
           remoteDir: "."
           options: "--only-newer --no-recursion --verbose=1"
+
+      - name: Upload theme editor
+        uses: sebastianpopp/ftp-action@releases/v2
+        with:
+          host: ${{ secrets.FTP_SERVER }}
+          user: ${{ secrets.FTP_USERNAME }}
+          password: ${{ secrets.FTP_PASSWORD }}
+          forceSsl: true
+          localDir: "flatlaf-theme-editor/build/libs"
+          remoteDir: "."
+          options: "--only-newer --no-recursion --verbose=1"

CHANGELOG.md

@@ -1,6 +1,270 @@
 FlatLaf Change Log
 ==================
 
+## 1.6.5
+
+#### Fixed bugs
+
+- Linux: Fixed font problems when running on Oracle Java (OpenJDK is not
+  affected):
+  - oversized text if system font is "Inter" (issue #427)
+  - missing text if system font is "Cantarell" (on Fedora)
+- MenuItem: Changed accelerator delimiter from `-` to `+`. (Windows and Linux).
+- ComboBox: Fixed occasional `StackOverflowError` when modifying combo box not
+  on AWT thread. (issue #432)
+- macOS: Fixed `NullPointerException` when using AWT component
+  `java.awt.Choice`. (issue #439)
+- Native window decorations: Do not exit application with `UnsatisfiedLinkError`
+  in case that FlatLaf DLL cannot be executed because of restrictions on
+  temporary directory. Instead, continue with default window decorations. (issue
+  #436)
+
+
+## 1.6.4
+
+#### Fixed bugs
+
+- ComboBox: Fixed regression in FlatLaf 1.6.3 that makes selected item invisible
+  in popup list if `DefaultListCellRenderer` is used as renderer. If using
+  default renderer, it works. (issue #426)
+
+
+## 1.6.3
+
+#### Fixed bugs
+
+- ComboBox (not editable): Fixed regression in FlatLaf 1.6.2 that may display
+  text in non-editable combo boxes in bold. (issue #423)
+- Tree: Fixed editing cell issue with custom cell renderer and cell editor that
+  use same component for rendering and editing. (issue #385)
+
+
+## 1.6.2
+
+#### Fixed bugs
+
+- ComboBox (not editable): Fixed background painted outside of border if round
+  edges are enabled (client property `JComponent.roundRect` is `true`). (similar
+  to issue #382; regression since fixing #330 in FlatLaf 1.4)
+- ComboBox: Fixed `NullPointerException`, which may occur under special
+  circumstances. (issue #408)
+- Table: Do not select text in cell editor when it gets focus (when
+  `JTable.surrendersFocusOnKeystroke` is `true`) and
+  `TextComponent.selectAllOnFocusPolicy` is `once` (the default) or `always`.
+  (issue #395)
+- Linux: Fixed NPE when using `java.awt.TrayIcon`. (issue #405)
+- FileChooser: Workaround for crash on Windows with Java 17 32-bit (disabled
+  Windows icons). Java 17 64-bit is not affected. (issue #403)
+- Native window decorations: Fixed layout loop, which may occur under special
+  circumstances and slows down the application. (issue #420)
+
+
+## 1.6.1
+
+#### Fixed bugs
+
+- Native window decorations: Catch `UnsatisfiedLinkError` when trying to load
+  `jawt.dll` to avoid an application crash (Java 8 on Windows 10 only).
+
+
+## 1.6
+
+#### New features and improvements
+
+- InternalFrame: Double-click on icon in internal frame title bar now closes the
+  internal frame. (issue #374)
+- IntelliJ Themes: Removed deprecated `install()` methods.
+
+#### Fixed bugs
+
+- Menus: Fixed missing modifiers flags in `ActionEvent` (e.g. `Ctrl` key
+  pressed) when running in Java 9+ on Linux, macOS. Occurs also on Windows in
+  large popup menus that do not fit into the window. (issue #371; regression
+  since FlatLaf 1.3)
+- OptionPane: Fixed `OptionPane.sameSizeButtons`, which did not work as expected
+  when setting to `false`.
+- OptionPane: Fixed rendering of longer HTML text if it is passed as
+  `StringBuilder`, `StringBuffer`, or any other object that returns HTML text in
+  method `toString()`. (similar to issue #12)
+- ComboBox: Fixed popup border painting on HiDPI screens (e.g. at 150% scaling).
+- ComboBox: Fixed popup location if shown above of combo box (Java 8 only).
+- ComboBox (editable): Fixed wrong border of internal text field under special
+  circumstances.
+- Spinner: Fixed painting of border corners on left side. (issue #382;
+  regression since fixing #330 in FlatLaf 1.4)
+- TableHeader: Do not show resize cursor for last column if resizing last column
+  is not possible because auto resize mode of table is not off. (issue #332)
+- TableHeader: Fixed missing trailing vertical separator line if used in upper
+  left corner of scroll pane. (issue #332)
+- TextField, FormattedTextField, PasswordField and ComboBox: Fixed alignment of
+  placeholder text in right-to-left component orientation.
+- Slider: Fixed calculation of baseline, which was wrong under some
+  circumstances.
+
+
+## 1.5
+
+#### New features and improvements
+
+- SwingX: Added search and clear icons to `JXSearchField`. (issue #359)
+
+#### Fixed bugs
+
+- Button and TextComponent: Do not apply minimum width/height if margins are
+  set. (issue #364)
+- ComboBox and Spinner: Limit arrow button width if component has large
+  preferred height. (issue #361)
+- FileChooser: Fixed missing (localized) texts when FlatLaf is loaded in special
+  classloader (e.g. plugin system in Apache NetBeans).
+- InternalFrame: Limit internal frame bounds to parent bounds on resize. Also
+  honor maximum size of internal frame. (issue #362)
+- Popup: Fixed incorrectly placed drop shadow for medium-weight popups in
+  maximized windows. (issue #358)
+- Native window decorations (Windows 10 only):
+  - Fixed occasional application crash in `flatlaf-windows.dll`. (issue #357)
+  - When window is initially shown, fill background with window background color
+    (instead of white), which avoids flickering in dark themes. (issue 339)
+  - When resizing a window at the right/bottom edge, then first fill the new
+    space with the window background color (instead of black) before the layout
+    is updated.
+  - When resizing a window at the left/top edge, then first fill the new space
+    with the window background color (instead of garbage) before the layout is
+    updated.
+
+
+## 1.4
+
+#### New features and improvements
+
+- TextField, FormattedTextField and PasswordField: Support adding extra padding.
+  (set client property `JTextField.padding` to `Insets`).
+- PasswordField: UI delegate `FlatPasswordFieldUI` now extends `FlatTextFieldUI`
+  (instead of `BasicPasswordFieldUI`) to avoid duplicate code and for easier
+  extensibility.
+- Table and PopupFactory: Use `StackWalker` in Java 9+ for better performance.
+  (issue #334)
+- ToolBar: Paint focus indicator for focused button in toolbar. (issue #346)
+- ToolBar: Support focusable buttons in toolbar (set UI value
+  `ToolBar.focusableButtons` to `true`). (issue #346)
+
+#### Fixed bugs
+
+- ComboBox (editable) and Spinner: Increased size of internal text field to the
+  component border so that it behaves like plain text field (mouse click to left
+  of text now positions caret to first character instead of opening ComboBox
+  popup; mouse cursor is now of type "text" within the whole component, except
+  for arrow buttons). (issue #330)
+- ComboBox (not editable): Increased size of internal renderer pane to the
+  component border so that it can paint within the whole component. Also
+  increase combo box size if a custom renderer uses a border with insets that
+  are larger than the default combo box padding (`2,6,2,6`).
+- Fixed component heights at `1.25x`, `1.75x` and `2.25x` scaling factors (Java
+  8 only) so that Button, ComboBox, Spinner and TextField components (including
+  subclasses) have same heights. This increases heights of Button and TextField
+  components by:
+  - `2px` at `1.75x` in **Light** and **Dark** themes
+  - `2px` at `1.25x` and `2.25x` in **IntelliJ** and **Darcula** themes
+- OptionPane: Do not make child components, which are derived from `JPanel`,
+  non-opaque. (issue #349)
+- OptionPane: Align wrapped lines to the right if component orientation is
+  right-to-left. (issue #350)
+- PasswordField: Caps lock icon no longer painted over long text. (issue #172)
+- PasswordField: Paint caps lock icon on left side in right-to-left component
+  orientation.
+- Window decorations: Window title bar width is no longer considered when
+  calculating preferred/minimum width of window. (issue #351)
+
+
+## 1.3
+
+#### New features and improvements
+
+- TextComponents, ComboBox and Spinner: Support different background color when
+  component is focused (use UI values `TextField.focusedBackground`,
+  `PasswordField.focusedBackground`, `FormattedTextField.focusedBackground`,
+  `TextArea.focusedBackground`, `TextPane.focusedBackground`,
+  `EditorPane.focusedBackground`, `ComboBox.focusedBackground`,
+  `ComboBox.buttonFocusedBackground`, `ComboBox.popupBackground` and
+  `Spinner.focusedBackground`). (issue #335)
+
+#### Fixed bugs
+
+- Fixed white lines at bottom and right side of window (in dark themes on HiDPI
+  screens with scaling enabled).
+- ScrollBar: Fixed left/top arrow icon location (if visible). (issue #329)
+- Spinner: Fixed up/down arrow icon location.
+- ToolTip: Fixed positioning of huge tooltips. (issue #333)
+
+
+## 1.2
+
+#### New features and improvements
+
+- Renamed `Flat*Laf.install()` methods to `Flat*Laf.setup()` to avoid confusion
+  with `UIManager.installLookAndFeel(LookAndFeelInfo info)`. The old
+  `Flat*Laf.install()` methods are still there, but marked as deprecated. They
+  will be removed in a future version.
+- Button and ToggleButton: Support borderless button style (set client property
+  `JButton.buttonType` to `borderless`). (PR #276)
+- ComboBox: Support using as cell renderer (e.g. in `JTable`).
+- DesktopPane: Improved layout of iconified internal frames in dock:
+  - Always placed at bottom-left in desktop pane.
+  - Newly iconified frames are added to the right side of the dock.
+  - If frame is deiconified, dock is compacted (icons move to the left).
+  - If dock is wider than desktop width, additional rows are used.
+  - If desktop pane is resized, layout of dock is updated.
+- TableHeader: Moved table header column border painting from
+  `FlatTableHeaderUI` to new border `FlatTableHeaderBorder` to improve
+  compatibility with custom table header implementations. (issue #228)
+- Linux: Enable text anti-aliasing if no Gnome or KDE Desktop properties are
+  available. (issue #218)
+- IntelliJ Themes: Added "Material Theme UI Lite / GitHub Dark" theme.
+- JIDE Common Layer: Improved support for `JideTabbedPane`. (PR #306)
+- Extras: `FlatSVGIcon` improvements:
+  - Each icon can now have its own color filter. (PR #303)
+  - Use mapper function in color filter to dynamically map colors. (PR #303)
+  - Color filter supports light and dark themes.
+  - Getters for icon name, classloader, etc.
+- Extras: UI Inspector: Show class hierarchies when pressing <kbd>Alt</kbd> key
+  and prettified class names (dimmed package name).
+- Extras: `FlatSVGUtils.createWindowIconImages()` now returns a single
+  multi-resolution image that creates requested image sizes on demand from SVG
+  (only on Windows with Java 9+).
+
+#### Fixed bugs
+
+- CheckBox and RadioButton: Do not fill background if used as cell renderer,
+  except if cell is selected or has different background color. (issue #311)
+- DesktopPane:
+  - Fixed missing preview of iconified internal frames in dock when using a
+    custom desktop manager. (PR #294)
+  - Fixed incomplete preview of iconified internal frames in dock when switching
+    LaF.
+  - On HiDPI screens, use high-resolution images for preview of iconified
+    internal frames in dock.
+- PopupFactory: Fixed occasional `NullPointerException` in
+  `FlatPopupFactory.fixToolTipLocation()`. (issue #305)
+- Tree: Fill cell background if
+  `DefaultTreeCellRenderer.setBackgroundNonSelectionColor(Color)` was used.
+  (issue #322)
+- IntelliJ Themes: Fixed background colors of DesktopPane and DesktopIcon in all
+  themes.
+- Native window decorations:
+  - Fixed slow application startup under particular conditions. (e.g. incomplete
+    custom JRE) (issue #319)
+  - Fixed occasional double window title bar when creating many frames or
+    dialogs. (issue #315)
+  - Fixed broken maximizing window (under special conditions) when restoring
+    frame state at startup.
+  - Title icon: For multi-resolution images now use `getResolutionVariant(width,
+    height)` (instead of `getResolutionVariants()`) to allow creation of
+    requested size on demand. This also avoids creation of all resolution
+    variants.
+  - Double-click at upper-left corner of maximized frame did not close window.
+    (issue #326)
+- Linux: Fixed/improved detection of user font settings. (issue #309)
+
+
 ## 1.1.2
 
 #### New features and improvements
@@ -164,7 +428,7 @@ FlatLaf Change Log
 - CheckBox and RadioButton: Fill component background as soon as background
   color is different to default background color, even if component is not
   opaque (which is the default). This paints selection if using the component as
-  cell renderer a Table, Tree or List.
+  cell renderer in Table, Tree or List.
 - TextComponents: Border of focused non-editable text components had wrong
   color.
 - Custom window decorations: Fixed top window border in dark themes when running

README.md

@@ -67,20 +67,23 @@ docs).
 Addons
 ------
 
-- [IntelliJ Themes Pack](flatlaf-intellij-themes)
-- [Extras](flatlaf-extras)
-- [SwingX](flatlaf-swingx)
-- [JIDE Common Layer](flatlaf-jide-oss)
+- [IntelliJ Themes Pack](flatlaf-intellij-themes) - bundles many popular
+  open-source 3rd party themes
+- [Extras](flatlaf-extras) - SVG icon, tri-state check box, UI inspectors, and
+  more
+- [SwingX](flatlaf-swingx) - support for SwingX components
+- [JIDE Common Layer](flatlaf-jide-oss) - support for JIDE Common Layer
+  components
 
 
 Getting started
 ---------------
 
-To enable FlatLaf, add following code to your main method before you create any
+To use FlatLaf, add following code to your main method before you create any
 Swing component:
 
 ~~~java
-FlatLightLaf.install();
+FlatLightLaf.setup();
 
 // create UI here...
 ~~~

build.gradle.kts

@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-val releaseVersion = "1.1.2"
-val developmentVersion = "1.2-SNAPSHOT"
+val releaseVersion = "1.6.5"
+val developmentVersion = "1.6.6-SNAPSHOT"
 
 version = if( java.lang.Boolean.getBoolean( "release" ) ) releaseVersion else developmentVersion
 
@@ -47,19 +47,35 @@ allprojects {
 			targetCompatibility = "1.8"
 
 			options.encoding = "ISO-8859-1"
+			options.isDeprecation = false
 		}
 
 		withType<Jar>().configureEach {
 			// manifest for all created JARs
-			manifest.attributes(mapOf(
+			manifest.attributes(
 				"Implementation-Vendor" to "FormDev Software GmbH",
 				"Implementation-Copyright" to "Copyright (C) 2019-${java.time.LocalDate.now().year} FormDev Software GmbH. All rights reserved.",
-				"Implementation-Version" to project.version))
+				"Implementation-Version" to project.version
+			)
 
 			// add META-INF/LICENSE to all created JARs
-			from("${rootDir}/LICENSE") {
-				into("META-INF")
+			from( "${rootDir}/LICENSE" ) {
+				into( "META-INF" )
 			}
 		}
+
+		withType<Javadoc>().configureEach {
+			options {
+				this as StandardJavadocDocletOptions
+
+				title = "${project.name} $version"
+				header = title
+				isUse = true
+				tags = listOf( "uiDefault", "clientProperty" )
+				addStringOption( "Xdoclint:all,-missing", "-Xdoclint:all,-missing" )
+				links( "https://docs.oracle.com/en/java/javase/11/docs/api/" )
+			}
+			isFailOnError = false
+		}
 	}
 }

flatlaf-core/build.gradle.kts

@@ -21,6 +21,12 @@ plugins {
 	`flatlaf-publish`
 }
 
+dependencies {
+	testImplementation( "org.junit.jupiter:junit-jupiter-api:5.7.2" )
+	testImplementation( "org.junit.jupiter:junit-jupiter-params" )
+	testRuntimeOnly( "org.junit.jupiter:junit-jupiter-engine" )
+}
+
 java {
 	withSourcesJar()
 	withJavadocJar()
@@ -45,23 +51,18 @@ tasks {
 		}
 	}
 
-	javadoc {
-		options {
-			this as StandardJavadocDocletOptions
-			use( true )
-			tags = listOf( "uiDefault", "clientProperty" )
-			addStringOption( "Xdoclint:all,-missing", "-Xdoclint:all,-missing" )
-		}
-		isFailOnError = false
-	}
-
-	named<Jar>("sourcesJar" ) {
+	named<Jar>( "sourcesJar" ) {
 		archiveBaseName.set( "flatlaf" )
 	}
 
-	named<Jar>("javadocJar" ) {
+	named<Jar>( "javadocJar" ) {
 		archiveBaseName.set( "flatlaf" )
 	}
+
+	test {
+		useJUnitPlatform()
+		testLogging.exceptionFormat = org.gradle.api.tasks.testing.logging.TestExceptionFormat.FULL
+	}
 }
 
 flatlafPublish {

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

@@ -39,8 +39,9 @@ public interface FlatClientProperties
 	 *     {@link #BUTTON_TYPE_SQUARE},
 	 *     {@link #BUTTON_TYPE_ROUND_RECT},
 	 *     {@link #BUTTON_TYPE_TAB},
-	 *     {@link #BUTTON_TYPE_HELP} or
-	 *     {@link BUTTON_TYPE_TOOLBAR_BUTTON}
+	 *     {@link #BUTTON_TYPE_HELP},
+	 *     {@link #BUTTON_TYPE_TOOLBAR_BUTTON} or
+	 *     {@link #BUTTON_TYPE_BORDERLESS}
 	 */
 	String BUTTON_TYPE = "JButton.buttonType";
 
@@ -89,6 +90,16 @@ public interface FlatClientProperties
 	 */
 	String BUTTON_TYPE_TOOLBAR_BUTTON = "toolBarButton";
 
+	/**
+	 * Paint the button without a border in the unfocused state.
+	 * <p>
+	 * <strong>Components</strong> {@link javax.swing.JButton} and {@link javax.swing.JToggleButton}
+	 *
+	 * @see #BUTTON_TYPE
+	 * @since 1.2
+	 */
+	String BUTTON_TYPE_BORDERLESS = "borderless";
+
 	/**
 	 * Specifies selected state of a checkbox.
 	 * <p>
@@ -272,6 +283,8 @@ public interface FlatClientProperties
 	/**
 	 * Background color of window title bar (requires enabled window decorations).
 	 * <p>
+	 * (requires Window 10)
+	 * <p>
 	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
 	 * <strong>Value type</strong> {@link java.awt.Color}
 	 *
@@ -282,6 +295,8 @@ public interface FlatClientProperties
 	/**
 	 * Foreground color of window title bar (requires enabled window decorations).
 	 * <p>
+	 * (requires Window 10)
+	 * <p>
 	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
 	 * <strong>Value type</strong> {@link java.awt.Color}
 	 *
@@ -718,6 +733,18 @@ public interface FlatClientProperties
 	 */
 	String PLACEHOLDER_TEXT = "JTextField.placeholderText";
 
+	/**
+	 * Specifies the padding of the text.
+	 * This changes the location and size of the text view within the component bounds,
+	 * but does not affect the size of the component.
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JTextField} (and subclasses)<br>
+	 * <strong>Value type</strong> {@link java.awt.Insets}
+	 *
+	 * @since 1.4
+	 */
+	String TEXT_FIELD_PADDING = "JTextField.padding";
+
 	//---- JToggleButton ------------------------------------------------------
 
 	/**

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

@@ -16,6 +16,8 @@
 
 package com.formdev.flatlaf;
 
+import javax.swing.UIManager;
+
 /**
  * A Flat LaF that has a dark color scheme and looks like Darcula LaF.
  * <p>
@@ -29,10 +31,28 @@ public class FlatDarculaLaf
 {
 	public static final String NAME = "FlatLaf Darcula";
 
-	public static boolean install() {
-		return install( new FlatDarculaLaf() );
+	/**
+	 * Sets the application look and feel to this LaF
+	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 */
+	public static boolean setup() {
+		return setup( new FlatDarculaLaf() );
 	}
 
+	/**
+	 * @deprecated use {@link #setup()} instead; this method will be removed in a future version
+	 */
+	@Deprecated
+	public static boolean install() {
+		return setup();
+	}
+
+	/**
+	 * 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, FlatDarculaLaf.class );
 	}

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

@@ -34,8 +34,16 @@ public class FlatDarkLaf
 	 * Sets the application look and feel to this LaF
 	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
 	 */
+	public static boolean setup() {
+		return setup( new FlatDarkLaf() );
+	}
+
+	/**
+	 * @deprecated use {@link #setup()} instead; this method will be removed in a future version
+	 */
+	@Deprecated
 	public static boolean install() {
-		return install( new FlatDarkLaf() );
+		return setup();
 	}
 
 	/**

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

@@ -16,6 +16,8 @@
 
 package com.formdev.flatlaf;
 
+import javax.swing.UIManager;
+
 /**
  * A Flat LaF that has a light color scheme and looks like IntelliJ LaF.
  * <p>
@@ -29,10 +31,28 @@ public class FlatIntelliJLaf
 {
 	public static final String NAME = "FlatLaf IntelliJ";
 
-	public static boolean install() {
-		return install( new FlatIntelliJLaf() );
+	/**
+	 * Sets the application look and feel to this LaF
+	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
+	 */
+	public static boolean setup() {
+		return setup( new FlatIntelliJLaf() );
 	}
 
+	/**
+	 * @deprecated use {@link #setup()} instead; this method will be removed in a future version
+	 */
+	@Deprecated
+	public static boolean install() {
+		return setup();
+	}
+
+	/**
+	 * 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, FlatIntelliJLaf.class );
 	}

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

@@ -32,9 +32,14 @@ import java.beans.PropertyChangeListener;
 import java.io.File;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
+import java.util.MissingResourceException;
 import java.util.Properties;
+import java.util.ResourceBundle;
 import java.util.ServiceLoader;
 import java.util.function.Consumer;
 import java.util.function.Function;
@@ -44,6 +49,7 @@ import javax.swing.ImageIcon;
 import javax.swing.JComponent;
 import javax.swing.JDialog;
 import javax.swing.JFrame;
+import javax.swing.JMenuBar;
 import javax.swing.LookAndFeel;
 import javax.swing.PopupFactory;
 import javax.swing.RootPaneContainer;
@@ -54,6 +60,7 @@ import javax.swing.UIManager;
 import javax.swing.UnsupportedLookAndFeelException;
 import javax.swing.plaf.ColorUIResource;
 import javax.swing.plaf.FontUIResource;
+import javax.swing.plaf.IconUIResource;
 import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicLookAndFeel;
 import javax.swing.text.StyleContext;
@@ -61,9 +68,11 @@ import javax.swing.text.html.HTMLEditorKit;
 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.util.GrayFilter;
 import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.MultiResolutionImageSupport;
+import com.formdev.flatlaf.util.StringUtils;
 import com.formdev.flatlaf.util.SystemInfo;
 import com.formdev.flatlaf.util.UIScale;
 
@@ -90,21 +99,30 @@ public abstract class FlatLaf
 	private MnemonicHandler mnemonicHandler;
 
 	private Consumer<UIDefaults> postInitialization;
+	private List<Function<Object, Object>> uiDefaultsGetters;
 
 	/**
 	 * Sets the application look and feel to the given LaF
 	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
 	 */
-	public static boolean install( LookAndFeel newLookAndFeel ) {
+	public static boolean setup( LookAndFeel newLookAndFeel ) {
 		try {
 			UIManager.setLookAndFeel( newLookAndFeel );
 			return true;
 		} catch( Exception ex ) {
-			LoggingFacade.INSTANCE.logSevere( "FlatLaf: Failed to initialize look and feel '" + newLookAndFeel.getClass().getName() + "'.", ex );
+			LoggingFacade.INSTANCE.logSevere( "FlatLaf: Failed to setup look and feel '" + newLookAndFeel.getClass().getName() + "'.", ex );
 			return false;
 		}
 	}
 
+	/**
+	 * @deprecated use {@link #setup(LookAndFeel)} instead; this method will be removed in a future version
+	 */
+	@Deprecated
+	public static boolean install( LookAndFeel newLookAndFeel ) {
+		return setup( newLookAndFeel );
+	}
+
 	/**
 	 * Adds the given look and feel to the set of available look and feels.
 	 * <p>
@@ -181,8 +199,10 @@ public abstract class FlatLaf
 
 	@Override
 	public Icon getDisabledIcon( JComponent component, Icon icon ) {
-		if( icon instanceof DisabledIconProvider )
-			return ((DisabledIconProvider)icon).getDisabledIcon();
+		if( icon instanceof DisabledIconProvider ) {
+			Icon disabledIcon = ((DisabledIconProvider)icon).getDisabledIcon();
+			return !(disabledIcon instanceof UIResource) ? new IconUIResource( disabledIcon ) : disabledIcon;
+		}
 
 		if( icon instanceof ImageIcon ) {
 			Object grayFilter = UIManager.get( "Component.grayFilter" );
@@ -245,6 +265,12 @@ public abstract class FlatLaf
 				}
 			};
 			Toolkit toolkit = Toolkit.getDefaultToolkit();
+
+			// make sure that AWT desktop properties are initialized (on Linux)
+			// before invoking toolkit.addPropertyChangeListener()
+			// https://github.com/JFormDesigner/FlatLaf/issues/405#issuecomment-960242342
+			toolkit.getDesktopProperty( "dummy" );
+
 			toolkit.addPropertyChangeListener( desktopPropertyName, desktopPropertyListener );
 			if( desktopPropertyName2 != null )
 				toolkit.addPropertyChangeListener( desktopPropertyName2, desktopPropertyListener );
@@ -318,7 +344,7 @@ public abstract class FlatLaf
 				Method m = UIManager.class.getMethod( "createLookAndFeel", String.class );
 				aquaLaf = (BasicLookAndFeel) m.invoke( null, "Mac OS X" );
 			} else
-				aquaLaf = (BasicLookAndFeel) Class.forName( aquaLafClassName ).newInstance();
+				aquaLaf = (BasicLookAndFeel) Class.forName( aquaLafClassName ).getDeclaredConstructor().newInstance();
 		} catch( Exception ex ) {
 			LoggingFacade.INSTANCE.logSevere( "FlatLaf: Failed to initialize Aqua look and feel '" + aquaLafClassName + "'.", ex );
 			throw new IllegalStateException();
@@ -338,14 +364,21 @@ public abstract class FlatLaf
 
 	@Override
 	public UIDefaults getDefaults() {
-		UIDefaults defaults = super.getDefaults();
+		// use larger initial capacity to avoid resizing UI defaults hash table
+		// (from 610 to 1221 to 2443 entries) and to save some memory
+		UIDefaults defaults = new FlatUIDefaults( 1500, 0.75f );
+
+		// initialize basic defaults (see super.getDefaults())
+		initClassDefaults( defaults );
+		initSystemColorDefaults( defaults );
+		initComponentDefaults( defaults );
 
 		// add flag that indicates whether the LaF is light or dark
 		// (can be queried without using FlatLaf API)
 		defaults.put( "laf.dark", isDark() );
 
-		// add resource bundle for localized texts
-		defaults.addResourceBundle( "com.formdev.flatlaf.resources.Bundle" );
+		// init resource bundle for localized texts
+		initResourceBundle( defaults, "com.formdev.flatlaf.resources.Bundle" );
 
 		// initialize some defaults (for overriding) that are used in UI delegates,
 		// but are not set in BasicLookAndFeel
@@ -441,6 +474,45 @@ public abstract class FlatLaf
 		return null;
 	}
 
+	private void initResourceBundle( UIDefaults defaults, String bundleName ) {
+		// add resource bundle for localized texts
+		defaults.addResourceBundle( bundleName );
+
+		// Check whether Swing can not load the FlatLaf resource bundle,
+		// which can happen in applications that use some plugin system
+		// and load FlatLaf in a plugin that uses its own classloader.
+		// (e.g. Apache NetBeans)
+		if( defaults.get( "FileChooser.fileNameHeaderText" ) != null )
+			return;
+
+		// load FlatLaf resource bundle and add content to defaults
+		try {
+			ResourceBundle bundle = ResourceBundle.getBundle( bundleName, defaults.getDefaultLocale() );
+
+			Enumeration<String> keys = bundle.getKeys();
+			while( keys.hasMoreElements() ) {
+				String key = keys.nextElement();
+				String value = bundle.getString( key );
+
+				String baseKey = StringUtils.removeTrailing( key, ".textAndMnemonic" );
+				if( baseKey != key ) {
+					String text = value.replace( "&", "" );
+					String mnemonic = null;
+					int index = value.indexOf( '&' );
+					if( index >= 0 )
+						mnemonic = Integer.toString( Character.toUpperCase( value.charAt( index + 1 ) ) );
+
+					defaults.put( baseKey + "Text", text );
+					if( mnemonic != null )
+						defaults.put( baseKey + "Mnemonic", mnemonic );
+				} else
+					defaults.put( key, value );
+			}
+		} catch( MissingResourceException ex ) {
+			LoggingFacade.INSTANCE.logSevere( null, ex );
+		}
+	}
+
 	private void initFonts( UIDefaults defaults ) {
 		FontUIResource uiFont = null;
 
@@ -553,6 +625,8 @@ public abstract class FlatLaf
 			defaults.put( RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON );
 		} else if( SystemInfo.isJava_9_orLater ) {
 			Object desktopHints = Toolkit.getDefaultToolkit().getDesktopProperty( DESKTOPFONTHINTS );
+			if( desktopHints == null )
+				desktopHints = fallbackAATextInfo();
 			if( desktopHints instanceof Map ) {
 				@SuppressWarnings( "unchecked" )
 				Map<Object, Object> hints = (Map<Object, Object>) desktopHints;
@@ -575,6 +649,8 @@ public abstract class FlatLaf
 				Object value = Class.forName( "sun.swing.SwingUtilities2$AATextInfo" )
 					.getMethod( "getAATextInfo", boolean.class )
 					.invoke( null, true );
+				if( value == null )
+					value = fallbackAATextInfo();
 				defaults.put( key, value );
 			} catch( Exception ex ) {
 				LoggingFacade.INSTANCE.logSevere( null, ex );
@@ -583,6 +659,47 @@ public abstract class FlatLaf
 		}
 	}
 
+	private Object fallbackAATextInfo() {
+		// do nothing if explicitly overridden
+		if( System.getProperty( "awt.useSystemAAFontSettings" ) != null )
+			return null;
+
+		Object aaHint = null;
+		Integer lcdContrastHint = null;
+
+		if( SystemInfo.isLinux ) {
+			// see sun.awt.UNIXToolkit.getDesktopAAHints()
+			Toolkit toolkit = Toolkit.getDefaultToolkit();
+			if( toolkit.getDesktopProperty( "gnome.Xft/Antialias" ) == null &&
+				toolkit.getDesktopProperty( "fontconfig/Antialias" ) == null )
+			{
+				// no Gnome or KDE Desktop properties available
+				// --> enable antialiasing
+				aaHint = RenderingHints.VALUE_TEXT_ANTIALIAS_ON;
+			}
+		}
+
+		if( aaHint == null )
+			return null;
+
+		if( SystemInfo.isJava_9_orLater ) {
+			Map<Object, Object> hints = new HashMap<>();
+			hints.put( RenderingHints.KEY_TEXT_ANTIALIASING, aaHint );
+			hints.put( RenderingHints.KEY_TEXT_LCD_CONTRAST, lcdContrastHint );
+			return hints;
+		} else {
+			// Java 8
+			try {
+				return Class.forName( "sun.swing.SwingUtilities2$AATextInfo" )
+					.getConstructor( Object.class, Integer.class )
+					.newInstance( aaHint, lcdContrastHint );
+			} catch( Exception ex ) {
+				LoggingFacade.INSTANCE.logSevere( null, ex );
+				throw new RuntimeException( ex );
+			}
+		}
+	}
+
 	private void putDefaults( UIDefaults defaults, Object value, String... keys ) {
 		for( String key : keys )
 			defaults.put( key, value );
@@ -762,12 +879,23 @@ public abstract class FlatLaf
 
 	/**
 	 * Revalidate and repaint all displayable frames and dialogs.
+	 * <p>
+	 * Useful to update UI after changing {@code TitlePane.menuBarEmbedded}.
 	 *
 	 * @since 1.1.2
 	 */
 	public static void revalidateAndRepaintAllFramesAndDialogs() {
 		for( Window w : Window.getWindows() ) {
 			if( isDisplayableFrameOrDialog( w ) ) {
+				// revalidate menu bar
+				JMenuBar menuBar = (w instanceof JFrame)
+					? ((JFrame)w).getJMenuBar()
+					: (w instanceof JDialog
+						? ((JDialog)w).getJMenuBar()
+						: null);
+				if( menuBar != null )
+					menuBar.revalidate();
+
 				w.revalidate();
 				w.repaint();
 			}
@@ -776,6 +904,9 @@ public abstract class FlatLaf
 
 	/**
 	 * Repaint all displayable frames and dialogs.
+	 * <p>
+	 * Useful to update UI after changing {@code TitlePane.unifiedBackground},
+	 * {@code MenuItem.selectionType} or {@code Component.hideMnemonics}.
 	 *
 	 * @since 1.1.2
 	 */
@@ -814,6 +945,139 @@ public abstract class FlatLaf
 		return super.hashCode();
 	}
 
+	/**
+	 * Registers a UI defaults getter function that is invoked before the standard getter.
+	 * This allows using different UI defaults for special purposes
+	 * (e.g. using multiple themes at the same time).
+	 * <p>
+	 * The key is passed as parameter to the function.
+	 * If the function returns {@code null}, then the next registered function is invoked.
+	 * If all registered functions return {@code null}, then the current look and feel is asked.
+	 * If the function returns {@link #NULL_VALUE}, then the UI value becomes {@code null}.
+	 *
+	 * @see #unregisterUIDefaultsGetter(Function)
+	 * @see #runWithUIDefaultsGetter(Function, Runnable)
+	 * @since 1.6
+	 */
+	public void registerUIDefaultsGetter( Function<Object, Object> uiDefaultsGetter ) {
+		if( uiDefaultsGetters == null )
+			uiDefaultsGetters = new ArrayList<>();
+
+		uiDefaultsGetters.remove( uiDefaultsGetter );
+		uiDefaultsGetters.add( uiDefaultsGetter );
+
+		// disable shared UIs
+		FlatUIUtils.setUseSharedUIs( false );
+	}
+
+	/**
+	 * Unregisters a UI defaults getter function that was invoked before the standard getter.
+	 *
+	 * @see #registerUIDefaultsGetter(Function)
+	 * @see #runWithUIDefaultsGetter(Function, Runnable)
+	 * @since 1.6
+	 */
+	public void unregisterUIDefaultsGetter( Function<Object, Object> uiDefaultsGetter ) {
+		if( uiDefaultsGetters == null )
+			return;
+
+		uiDefaultsGetters.remove( uiDefaultsGetter );
+
+		// enable shared UIs
+		if( uiDefaultsGetters.isEmpty() )
+			FlatUIUtils.setUseSharedUIs( true );
+	}
+
+	/**
+	 * Registers a UI defaults getter function that is invoked before the standard getter,
+	 * runs the given runnable and unregisters the UI defaults getter function again.
+	 * This allows using different UI defaults for special purposes
+	 * (e.g. using multiple themes at the same time).
+	 * If the current look and feel is not FlatLaf, then the getter is ignored and
+	 * the given runnable invoked.
+	 * <p>
+	 * The key is passed as parameter to the function.
+	 * If the function returns {@code null}, then the next registered function is invoked.
+	 * If all registered functions return {@code null}, then the current look and feel is asked.
+	 * If the function returns {@link #NULL_VALUE}, then the UI value becomes {@code null}.
+	 * <p>
+	 * Example:
+	 * <pre>{@code
+	 * // create secondary theme
+	 * UIDefaults darkDefaults = new FlatDarkLaf().getDefaults();
+	 *
+	 * // create panel using secondary theme
+	 * FlatLaf.runWithUIDefaultsGetter( key -> {
+	 *     Object value = darkDefaults.get( key );
+	 *     return (value != null) ? value : FlatLaf.NULL_VALUE;
+	 * }, () -> {
+	 *     // TODO create components that should use secondary theme here
+	 * } );
+	 * }</pre>
+	 *
+	 * @see #registerUIDefaultsGetter(Function)
+	 * @see #unregisterUIDefaultsGetter(Function)
+	 * @since 1.6
+	 */
+	public static void runWithUIDefaultsGetter( Function<Object, Object> uiDefaultsGetter, Runnable runnable ) {
+		LookAndFeel laf = UIManager.getLookAndFeel();
+		if( laf instanceof FlatLaf ) {
+			((FlatLaf)laf).registerUIDefaultsGetter( uiDefaultsGetter );
+			try {
+				runnable.run();
+			} finally {
+				((FlatLaf)laf).unregisterUIDefaultsGetter( uiDefaultsGetter );
+			}
+		} else
+			runnable.run();
+	}
+
+	/**
+	 * Special value returned by functions used in {@link #runWithUIDefaultsGetter(Function, Runnable)}
+	 * or {@link #registerUIDefaultsGetter(Function)} to indicate that the UI value should
+	 * become {@code null}.
+	 *
+	 * @see #runWithUIDefaultsGetter(Function, Runnable)
+	 * @see #registerUIDefaultsGetter(Function)
+	 * @since 1.6
+	 */
+	public static final Object NULL_VALUE = new Object();
+
+	//---- class FlatUIDefaults -----------------------------------------------
+
+	private class FlatUIDefaults
+		extends UIDefaults
+	{
+		FlatUIDefaults( int initialCapacity, float loadFactor ) {
+			super( initialCapacity, loadFactor );
+		}
+
+		@Override
+		public Object get( Object key ) {
+			Object value = getValue( key );
+			return (value != null) ? (value != NULL_VALUE ? value : null) : super.get( key );
+		}
+
+		@Override
+		public Object get( Object key, Locale l ) {
+			Object value = getValue( key );
+			return (value != null) ? (value != NULL_VALUE ? value : null) : super.get( key, l );
+		}
+
+		private Object getValue( Object key ) {
+			if( uiDefaultsGetters == null )
+				return null;
+
+			for( int i = uiDefaultsGetters.size() - 1; i >= 0; i-- ) {
+				Object value = uiDefaultsGetters.get( i ).apply( key );
+				if( value != null )
+					return value;
+			}
+
+			return null;
+		}
+	}
+
 	//---- class ActiveFont ---------------------------------------------------
 
 	private static class ActiveFont

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

@@ -34,8 +34,16 @@ public class FlatLightLaf
 	 * Sets the application look and feel to this LaF
 	 * using {@link UIManager#setLookAndFeel(javax.swing.LookAndFeel)}.
 	 */
+	public static boolean setup() {
+		return setup( new FlatLightLaf() );
+	}
+
+	/**
+	 * @deprecated use {@link #setup()} instead; this method will be removed in a future version
+	 */
+	@Deprecated
 	public static boolean install() {
-		return install( new FlatLightLaf() );
+		return setup();
 	}
 
 	/**

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

@@ -101,7 +101,7 @@ public interface FlatSystemProperties
 	 * (requires Window 10)
 	 * <p>
 	 * <strong>Allowed Values</strong> {@code false} and {@code true}<br>
-	 * <strong>Default</strong> true
+	 * <strong>Default</strong> {@code true}
 	 */
 	String USE_JETBRAINS_CUSTOM_DECORATIONS = "flatlaf.useJetBrainsCustomDecorations";
 

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

@@ -34,6 +34,7 @@ import javax.swing.UIDefaults;
 import javax.swing.plaf.ColorUIResource;
 import com.formdev.flatlaf.json.Json;
 import com.formdev.flatlaf.json.ParseException;
+import com.formdev.flatlaf.util.ColorFunctions;
 import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.StringUtils;
 
@@ -67,20 +68,28 @@ public class IntelliJTheme
 
 	/**
 	 * Loads a IntelliJ .theme.json file from the given input stream,
-	 * creates a Laf instance for it and installs it.
+	 * creates a Laf instance for it and sets it up.
 	 *
 	 * The input stream is automatically closed.
 	 * Using a buffered input stream is not necessary.
 	 */
-	public static boolean install( InputStream in ) {
+	public static boolean setup( InputStream in ) {
 		try {
-		    return FlatLaf.install( createLaf( in ) );
+		    return FlatLaf.setup( createLaf( in ) );
 		} catch( Exception ex ) {
 			LoggingFacade.INSTANCE.logSevere(  "FlatLaf: Failed to load IntelliJ theme", ex );
 		    return false;
 		}
 	}
 
+	/**
+	 * @deprecated use {@link #setup(InputStream)} instead; this method will be removed in a future version
+	 */
+	@Deprecated
+	public static boolean install( InputStream in ) {
+		return setup( in );
+	}
+
 	/**
 	 * Loads a IntelliJ .theme.json file from the given input stream and
 	 * creates a Laf instance for it.
@@ -215,6 +224,12 @@ public class IntelliJTheme
 		if( !uiKeys.contains( "ToggleButton.foreground" ) && uiKeys.contains( "Button.foreground" ) )
 			defaults.put( "ToggleButton.foreground", defaults.get( "Button.foreground" ) );
 
+		// fix DesktopPane background (use Panel.background and make it 5% darker/lighter)
+		Color desktopBackgroundBase = defaults.getColor( "Panel.background" );
+		Color desktopBackground = ColorFunctions.applyFunctions( desktopBackgroundBase,
+			new ColorFunctions.HSLIncreaseDecrease( 2, dark, 5, false, true ) );
+		defaults.put( "Desktop.background", new ColorUIResource( desktopBackground ) );
+
 		// fix List and Table background colors in Material UI Lite themes
 		if( isMaterialUILite ) {
 			defaults.put( "List.background", defaults.get( "Tree.background" ) );
@@ -241,9 +256,10 @@ public class IntelliJTheme
 		// remove theme specific UI defaults and remember only those for current theme
 		Map<Object, Object> themeSpecificDefaults = new HashMap<>();
 		String currentThemePrefix = '[' + name.replace( ' ', '_' ) + ']';
+		String currentThemeAndAuthorPrefix = '[' + name.replace( ' ', '_' ) + "---" + author.replace( ' ', '_' ) + ']';
 		String currentAuthorPrefix = "[author-" + author.replace( ' ', '_' ) + ']';
 		String allThemesPrefix = "[*]";
-		String[] prefixes = { currentThemePrefix, currentAuthorPrefix, allThemesPrefix };
+		String[] prefixes = { currentThemePrefix, currentThemeAndAuthorPrefix, currentAuthorPrefix, allThemesPrefix };
 		for( String key : themeSpecificKeys ) {
 			Object value = defaults.remove( key );
 			for( String prefix : prefixes ) {
@@ -344,6 +360,10 @@ public class IntelliJTheme
 
 				// replace all values in UI defaults that match the wildcard key
 				for( Object k : defaultsKeysCache ) {
+					if( k.equals( "Desktop.background" ) ||
+						k.equals( "DesktopIcon.background" ) )
+					  continue;
+
 					if( k instanceof String ) {
 						// support replacing of mapped keys
 						// (e.g. set ComboBox.buttonEditableBackground to *.background

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

@@ -17,6 +17,7 @@
 package com.formdev.flatlaf;
 
 import java.awt.Font;
+import java.awt.FontMetrics;
 import java.awt.GraphicsConfiguration;
 import java.awt.GraphicsEnvironment;
 import java.awt.Toolkit;
@@ -28,7 +29,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.StringTokenizer;
-
+import javax.swing.text.StyleContext;
 import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.StringUtils;
 import com.formdev.flatlaf.util.SystemInfo;
@@ -55,24 +56,38 @@ class LinuxFontPolicy
 
 		String family = "";
 		int style = Font.PLAIN;
-		int size = 10;
+		double dsize = 10;
 
+		// parse pango font description
+		// see https://developer.gnome.org/pango/1.46/pango-Fonts.html#pango-font-description-from-string
 		StringTokenizer st = new StringTokenizer( (String) fontName );
 		while( st.hasMoreTokens() ) {
 			String word = st.nextToken();
 
-			if( word.equalsIgnoreCase( "italic" ) )
+			// remove trailing ',' (e.g. in "Ubuntu Condensed, 11" or "Ubuntu Condensed, Bold 11")
+			if( word.endsWith( "," ) )
+				word = word.substring( 0, word.length() - 1 ).trim();
+
+			String lword = word.toLowerCase();
+			if( lword.equals( "italic" ) || lword.equals( "oblique" ) )
 				style |= Font.ITALIC;
-			else if( word.equalsIgnoreCase( "bold" ) )
+			else if( lword.equals( "bold" ) )
 				style |= Font.BOLD;
 			else if( Character.isDigit( word.charAt( 0 ) ) ) {
 				try {
-					size = Integer.parseInt( word );
+					dsize = Double.parseDouble( word );
 				} catch( NumberFormatException ex ) {
 					// ignore
 				}
-			} else
+			} else {
+				// remove '-' from "Semi-Bold", "Extra-Light", etc
+				if( lword.startsWith( "semi-" ) || lword.startsWith( "demi-" ) )
+					word = word.substring( 0, 4 ) + word.substring( 5 );
+				else if( lword.startsWith( "extra-" ) || lword.startsWith( "ultra-" ) )
+					word = word.substring( 0, 5 ) + word.substring( 6 );
+
 				family = family.isEmpty() ? word : (family + ' ' + word);
+			}
 		}
 
 		// Ubuntu font is rendered poorly (except if running in JetBrains VM)
@@ -83,8 +98,8 @@ class LinuxFontPolicy
 		  family = "Liberation Sans";
 
 		// scale font size
-		double dsize = size * getGnomeFontScale();
-		size = (int) (dsize + 0.5);
+		dsize *= getGnomeFontScale();
+		int size = (int) (dsize + 0.5);
 		if( size < 1 )
 			size = 1;
 
@@ -93,7 +108,48 @@ class LinuxFontPolicy
 		if( logicalFamily != null )
 			family = logicalFamily;
 
-		return createFont( family, style, size, dsize );
+		return createFontEx( family, style, size, dsize );
+	}
+
+	/**
+	 * Create a font for the given family, style and size.
+	 * If the font family does not match any font on the system,
+	 * then the last word (usually a font weight) from the family name is removed and tried again.
+	 * E.g. family 'URW Bookman Light' is not found, but 'URW Bookman' is found.
+	 * If still not found, then font of family 'Dialog' is returned.
+	 */
+	private static Font createFontEx( String family, int style, int size, double dsize ) {
+		for(;;) {
+			Font font = createFont( family, style, size, dsize );
+
+			if( Font.DIALOG.equals( family ) )
+				return font;
+
+			// if the font family does not match any font on the system, "Dialog" family is returned
+			if( !Font.DIALOG.equals( font.getFamily() ) ) {
+				// check for font problems
+				// - font height much larger than expected (e.g. font Inter; Oracle Java 8)
+				// - character width is zero (e.g. font Cantarell; Fedora; Oracle Java 8)
+				FontMetrics fm = StyleContext.getDefaultStyleContext().getFontMetrics( font );
+				if( fm.getHeight() > size * 2 || fm.stringWidth( "a" ) == 0 )
+					return createFont( Font.DIALOG, style, size, dsize );
+
+				return font;
+			}
+
+			// find last word in family
+			int index = family.lastIndexOf( ' ' );
+			if( index < 0 )
+				return createFont( Font.DIALOG, style, size, dsize );
+
+			// check whether last work contains some font weight (e.g. Ultra-Bold or Heavy)
+			String lastWord = family.substring( index + 1 ).toLowerCase();
+			if( lastWord.contains( "bold" ) || lastWord.contains( "heavy" ) || lastWord.contains( "black" ) )
+				style |= Font.BOLD;
+
+			// remove last word from family and try again
+			family = family.substring( 0, index );
+		}
 	}
 
 	private static Font createFont( String family, int style, int size, double dsize ) {
@@ -265,6 +321,9 @@ class LinuxFontPolicy
 	 *   - running on JetBrains Runtime 11 or later and scaling is enabled in system Settings
 	 */
 	private static boolean isSystemScaling() {
+		if( GraphicsEnvironment.isHeadless() )
+			return true;
+
 		GraphicsConfiguration gc = GraphicsEnvironment.getLocalGraphicsEnvironment()
 			.getDefaultScreenDevice().getDefaultConfiguration();
 		return UIScale.getSystemScaleFactor( gc ) > 1;

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

@@ -442,8 +442,8 @@ class UIDefaultsLoader
 	private static Object parseInstance( String value, List<ClassLoader> addonClassLoaders ) {
 		return (LazyValue) t -> {
 			try {
-				return findClass( value, addonClassLoaders ).newInstance();
-			} catch( InstantiationException | IllegalAccessException | ClassNotFoundException ex ) {
+				return findClass( value, addonClassLoaders ).getDeclaredConstructor().newInstance();
+			} catch( Exception ex ) {
 				LoggingFacade.INSTANCE.logSevere( "FlatLaf: Failed to instantiate '" + value + "'.", ex );
 				return null;
 			}
@@ -604,6 +604,13 @@ class UIDefaultsLoader
 				case "fadeout":		return parseColorHSLIncreaseDecrease( 3, false, params, resolver, reportError );
 				case "fade":		return parseColorFade( params, resolver, reportError );
 				case "spin":		return parseColorSpin( params, resolver, reportError );
+				case "changeHue":		return parseColorChange( 0, params, resolver, reportError );
+				case "changeSaturation":return parseColorChange( 1, params, resolver, reportError );
+				case "changeLightness":	return parseColorChange( 2, params, resolver, reportError );
+				case "changeAlpha":		return parseColorChange( 3, params, resolver, reportError );
+				case "mix":				return parseColorMix( null, params, resolver, reportError );
+				case "tint":			return parseColorMix( "#fff", params, resolver, reportError );
+				case "shade":			return parseColorMix( "#000", params, resolver, reportError );
 			}
 		} finally {
 			parseColorDepth--;
@@ -753,6 +760,68 @@ class UIDefaultsLoader
 		return parseFunctionBaseColor( colorStr, function, derived, resolver, reportError );
 	}
 
+	/**
+	 * Syntax: changeHue(color,value[,options]) or
+	 *         changeSaturation(color,value[,options]) or
+	 *         changeLightness(color,value[,options]) or
+	 *         changeAlpha(color,value[,options])
+	 *   - color: a color (e.g. #f00) or a color function
+	 *   - value: for hue: number of degrees; otherwise: percentage 0-100%
+	 *   - options: [derived]
+	 */
+	private static Object parseColorChange( int hslIndex,
+		List<String> params, Function<String, String> resolver, boolean reportError )
+	{
+		String colorStr = params.get( 0 );
+		int value = (hslIndex == 0)
+			? parseInteger( params.get( 1 ), true )
+			: parsePercentage( params.get( 1 ) );
+		boolean derived = false;
+
+		if( params.size() > 2 ) {
+			String options = params.get( 2 );
+			derived = options.contains( "derived" );
+		}
+
+		// create function
+		ColorFunction function = new ColorFunctions.HSLChange( hslIndex, value );
+
+		// parse base color, apply function and create derived color
+		return parseFunctionBaseColor( colorStr, function, derived, resolver, reportError );
+	}
+
+	/**
+	 * Syntax: mix(color1,color2[,weight]) or
+	 *         tint(color[,weight]) or
+	 *         shade(color[,weight])
+	 *   - color1: a color (e.g. #f00) or a color function
+	 *   - color2: a color (e.g. #f00) or a color function
+	 *   - 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 ) {
+		int i = 0;
+		if( color1Str == null )
+			color1Str = params.get( i++ );
+		String color2Str = params.get( i++ );
+		int weight = 50;
+
+		if( params.size() > i )
+			weight = parsePercentage( params.get( i++ ) );
+
+		// parse second color
+		String resolvedColor2Str = resolver.apply( color2Str );
+		ColorUIResource color2 = (ColorUIResource) parseColorOrFunction( resolvedColor2Str, resolver, reportError );
+		if( color2 == null )
+			return null;
+
+		// create function
+		ColorFunction function = new ColorFunctions.Mix( color2, weight );
+
+		// parse first color, apply function and create mixed color
+		return parseFunctionBaseColor( color1Str, function, false, resolver, reportError );
+	}
+
 	private static Object parseFunctionBaseColor( String colorStr, ColorFunction function,
 		boolean derived, Function<String, String> resolver, boolean reportError )
 	{

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

@@ -44,7 +44,7 @@ public class FlatCapsLockIcon
 			<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="12" fill="#FFF"/>
+			    <rect width="6" height="2" x="5" y="11.5" fill="#FFF"/>
     			<path fill="#FFF" d="M2,8 L8,2 L14,8 L11,8 L11,10 L5,10 L5,8 L2,8 Z"/>
 			  </g>
 			</svg>
@@ -52,7 +52,7 @@ public class FlatCapsLockIcon
 
 		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
 		path.append( new RoundRectangle2D.Float( 0, 0, 16, 16, 6, 6 ), false );
-		path.append( new Rectangle2D.Float( 5, 12, 6, 2 ), false );
+		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 );
 		g.fill( path );
 	}

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

@@ -0,0 +1,85 @@
+/*
+ * Copyright 2021 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.icons;
+
+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 javax.swing.AbstractButton;
+import javax.swing.ButtonModel;
+import javax.swing.UIManager;
+import com.formdev.flatlaf.ui.FlatUIUtils;
+
+/**
+ * "clear" icon for search fields.
+ *
+ * @uiDefault SearchField.clearIconColor				Color
+ * @uiDefault SearchField.clearIconHoverColor			Color
+ * @uiDefault SearchField.clearIconPressedColor			Color
+ *
+ * @author Karl Tauber
+ * @since 1.5
+ */
+public class FlatClearIcon
+	extends FlatAbstractIcon
+{
+	protected Color clearIconColor = UIManager.getColor( "SearchField.clearIconColor" );
+	protected Color clearIconHoverColor = UIManager.getColor( "SearchField.clearIconHoverColor" );
+	protected Color clearIconPressedColor = UIManager.getColor( "SearchField.clearIconPressedColor" );
+
+	public FlatClearIcon() {
+		super( 16, 16, null );
+	}
+
+	@Override
+	protected void paintIcon( Component c, Graphics2D g ) {
+		if( c instanceof AbstractButton ) {
+			ButtonModel model = ((AbstractButton)c).getModel();
+			if( model.isPressed() || model.isRollover() ) {
+				/*
+					<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+					  <path fill="#7F8B91" fill-opacity=".5" fill-rule="evenodd" d="M8,1.75 C11.4517797,1.75 14.25,4.54822031 14.25,8 C14.25,11.4517797 11.4517797,14.25 8,14.25 C4.54822031,14.25 1.75,11.4517797 1.75,8 C1.75,4.54822031 4.54822031,1.75 8,1.75 Z M10.5,4.5 L8,7 L5.5,4.5 L4.5,5.5 L7,8 L4.5,10.5 L5.5,11.5 L8,9 L10.5,11.5 L11.5,10.5 L9,8 L11.5,5.5 L10.5,4.5 Z"/>
+					</svg>
+				*/
+
+				// paint filled circle with cross
+				g.setColor( model.isPressed() ? clearIconPressedColor : clearIconHoverColor );
+				Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+				path.append( new Ellipse2D.Float( 1.75f, 1.75f, 12.5f, 12.5f ), false );
+				path.append( FlatUIUtils.createPath( 4.5,5.5, 5.5,4.5, 8,7,  10.5,4.5, 11.5,5.5, 9,8,  11.5,10.5, 10.5,11.5, 8,9,  5.5,11.5, 4.5,10.5, 7,8 ), false );
+				g.fill( path );
+				return;
+			}
+		}
+
+		/*
+			<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+			  <path fill="none" stroke="#7F8B91" stroke-linecap="square" stroke-opacity=".5" d="M5,5 L11,11 M5,11 L11,5"/>
+			</svg>
+		*/
+
+		// paint cross
+		g.setColor( clearIconColor );
+		Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
+		path.append( new Line2D.Float( 5,5, 11,11 ), false );
+		path.append( new Line2D.Float( 5,11, 11,5 ), false );
+		g.draw( path );
+	}
+}

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

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2021 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.icons;
+
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Graphics2D;
+import java.awt.geom.Area;
+import java.awt.geom.Ellipse2D;
+import javax.swing.UIManager;
+import com.formdev.flatlaf.ui.FlatButtonUI;
+import com.formdev.flatlaf.ui.FlatUIUtils;
+
+/**
+ * "search" icon for search fields.
+ *
+ * @uiDefault SearchField.searchIconColor				Color
+ * @uiDefault SearchField.searchIconHoverColor			Color
+ * @uiDefault SearchField.searchIconPressedColor		Color
+ *
+ * @author Karl Tauber
+ * @since 1.5
+ */
+public class FlatSearchIcon
+	extends FlatAbstractIcon
+{
+	protected Color searchIconColor = UIManager.getColor( "SearchField.searchIconColor" );
+	protected Color searchIconHoverColor = UIManager.getColor( "SearchField.searchIconHoverColor" );
+	protected Color searchIconPressedColor = UIManager.getColor( "SearchField.searchIconPressedColor" );
+
+	public FlatSearchIcon() {
+		super( 16, 16, 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-opacity=".9" fill-rule="evenodd">
+			    <polygon fill="#7F8B91" points="10.813 9.75 14 12.938 12.938 14 9.75 10.813"/>
+			    <path fill="#7F8B91" d="M7,2 C9.76142375,2 12,4.23857625 12,7 C12,9.76142375 9.76142375,12 7,12 C4.23857625,12 2,9.76142375 2,7 C2,4.23857625 4.23857625,2 7,2 Z M7,3 C4.790861,3 3,4.790861 3,7 C3,9.209139 4.790861,11 7,11 C9.209139,11 11,9.209139 11,7 C11,4.790861 9.209139,3 7,3 Z"/>
+			  </g>
+			</svg>
+		*/
+
+		g.setColor( FlatButtonUI.buttonStateColor( c, searchIconColor, searchIconColor,
+			null, searchIconHoverColor, searchIconPressedColor ) );
+
+		// paint magnifier
+		Area area = new Area( new Ellipse2D.Float( 2, 2, 10, 10 ) );
+		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/FlatSearchWithHistoryIcon.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2021 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.icons;
+
+import java.awt.Component;
+import java.awt.Graphics2D;
+import com.formdev.flatlaf.ui.FlatUIUtils;
+
+/**
+ * "search with history" icon for search fields.
+ *
+ * @author Karl Tauber
+ * @since 1.5
+ */
+public class FlatSearchWithHistoryIcon
+	extends FlatSearchIcon
+{
+	public FlatSearchWithHistoryIcon() {
+	}
+
+	@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-opacity=".9" fill-rule="evenodd">
+			    <polygon fill="#7F8B91" points="8.813 9.75 12 12.938 10.938 14 7.75 10.813"/>
+			    <path fill="#7F8B91" d="M5,2 C7.76142375,2 10,4.23857625 10,7 C10,9.76142375 7.76142375,12 5,12 C2.23857625,12 0,9.76142375 0,7 C0,4.23857625 2.23857625,2 5,2 Z M5,3 C2.790861,3 1,4.790861 1,7 C1,9.209139 2.790861,11 5,11 C7.209139,11 9,9.209139 9,7 C9,4.790861 7.209139,3 5,3 Z"/>
+			    <polygon fill="#7F8B91" points="11 7 16 7 13.5 10"/>
+			  </g>
+			</svg>
+		*/
+
+		// paint magnifier
+		g.translate( -2, 0 );
+		super.paintIcon( c, g );
+		g.translate( 2, 0 );
+
+		// paint history arrow
+		g.fill( FlatUIUtils.createPath( 11,7, 16,7, 13.5,10 ) );
+	}
+}

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

@@ -48,8 +48,8 @@ public class FlatArrowButton
 	protected final Color pressedBackground;
 
 	private int arrowWidth = DEFAULT_ARROW_WIDTH;
-	private int xOffset = 0;
-	private int yOffset = 0;
+	private float xOffset = 0;
+	private float yOffset = 0;
 
 	private boolean hover;
 	private boolean pressed;
@@ -117,19 +117,19 @@ public class FlatArrowButton
 		return pressed;
 	}
 
-	public int getXOffset() {
+	public float getXOffset() {
 		return xOffset;
 	}
 
-	public void setXOffset( int xOffset ) {
+	public void setXOffset( float xOffset ) {
 		this.xOffset = xOffset;
 	}
 
-	public int getYOffset() {
+	public float getYOffset() {
 		return yOffset;
 	}
 
-	public void setYOffset( int yOffset ) {
+	public void setYOffset( float yOffset ) {
 		this.yOffset = yOffset;
 	}
 
@@ -141,6 +141,21 @@ public class FlatArrowButton
 		return FlatUIUtils.deriveColor( foreground, this.foreground );
 	}
 
+	/**
+	 * Returns the color used to paint the arrow.
+	 *
+	 * @since 1.2
+	 */
+	protected Color getArrowColor() {
+		return isEnabled()
+			? (pressedForeground != null && isPressed()
+				? pressedForeground
+				: (hoverForeground != null && isHover()
+					? hoverForeground
+					: foreground))
+			: disabledForeground;
+	}
+
 	@Override
 	public Dimension getPreferredSize() {
 		return scale( super.getPreferredSize() );
@@ -170,13 +185,7 @@ public class FlatArrowButton
 		}
 
 		// paint arrow
-		g.setColor( deriveForeground( isEnabled()
-			? (pressedForeground != null && isPressed()
-				? pressedForeground
-				: (hoverForeground != null && isHover()
-					? hoverForeground
-					: foreground))
-			: disabledForeground ) );
+		g.setColor( deriveForeground( getArrowColor() ) );
 		paintArrow( (Graphics2D) g );
 
 		FlatUIUtils.resetRenderingHints( g, oldRenderingHints );

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

@@ -22,17 +22,12 @@ import java.awt.Component;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
-import java.awt.KeyboardFocusManager;
 import java.awt.Paint;
 import javax.swing.JComboBox;
 import javax.swing.JComponent;
 import javax.swing.JScrollPane;
 import javax.swing.JSpinner;
-import javax.swing.JTable;
-import javax.swing.JTextField;
-import javax.swing.JTree;
 import javax.swing.JViewport;
-import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.plaf.basic.BasicBorders;
 import com.formdev.flatlaf.FlatClientProperties;
@@ -50,6 +45,7 @@ import com.formdev.flatlaf.util.DerivedColor;
  *
  * @uiDefault Component.focusWidth						int
  * @uiDefault Component.innerFocusWidth					int or float
+ * @uiDefault Component.innerOutlineWidth				int or float
  * @uiDefault Component.focusColor						Color
  * @uiDefault Component.borderColor						Color
  * @uiDefault Component.disabledBorderColor				Color
@@ -164,37 +160,13 @@ public class FlatBorder
 	}
 
 	protected boolean isFocused( Component c ) {
-		if( c instanceof JScrollPane ) {
-			JViewport viewport = ((JScrollPane)c).getViewport();
-			Component view = (viewport != null) ? viewport.getView() : null;
-			if( view != null ) {
-				if( FlatUIUtils.isPermanentFocusOwner( view ) )
-					return true;
-
-				if( (view instanceof JTable && ((JTable)view).isEditing()) ||
-					(view instanceof JTree && ((JTree)view).isEditing()) )
-				{
-					Component focusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
-					if( focusOwner != null )
-						return SwingUtilities.isDescendingFrom( focusOwner, view );
-				}
-			}
-			return false;
-		} else if( c instanceof JComboBox && ((JComboBox<?>)c).isEditable() ) {
-			Component editorComponent = ((JComboBox<?>)c).getEditor().getEditorComponent();
-			return (editorComponent != null) ? FlatUIUtils.isPermanentFocusOwner( editorComponent ) : false;
-		} else if( c instanceof JSpinner ) {
-			if( FlatUIUtils.isPermanentFocusOwner( c ) )
-				return true;
-
-			JComponent editor = ((JSpinner)c).getEditor();
-			if( editor instanceof JSpinner.DefaultEditor ) {
-				JTextField textField = ((JSpinner.DefaultEditor)editor).getTextField();
-				if( textField != null )
-					return FlatUIUtils.isPermanentFocusOwner( textField );
-			}
-			return false;
-		} else
+		if( c instanceof JScrollPane )
+			return FlatScrollPaneUI.isPermanentFocusOwner( (JScrollPane) c );
+		else if( c instanceof JComboBox )
+			return FlatComboBoxUI.isPermanentFocusOwner( (JComboBox<?>) c );
+		else if( c instanceof JSpinner )
+			return FlatSpinnerUI.isPermanentFocusOwner( (JSpinner) c );
+		else
 			return FlatUIUtils.isPermanentFocusOwner( c );
 	}
 
@@ -205,13 +177,14 @@ public class FlatBorder
 	@Override
 	public Insets getBorderInsets( Component c, Insets insets ) {
 		float focusWidth = scale( (float) getFocusWidth( c ) );
-		float ow = focusWidth + scale( (float) getLineWidth( c ) );
+		int ow = Math.round( focusWidth + scale( (float) getLineWidth( c ) ) );
 
 		insets = super.getBorderInsets( c, insets );
-		insets.top = Math.round( scale( (float) insets.top ) + ow );
-		insets.left = Math.round( scale( (float) insets.left ) + ow );
-		insets.bottom = Math.round( scale( (float) insets.bottom ) + ow );
-		insets.right = Math.round( scale( (float) insets.right ) + ow );
+
+		insets.top = scale( insets.top ) + ow;
+		insets.left = scale( insets.left ) + ow;
+		insets.bottom = scale( insets.bottom ) + ow;
+		insets.right = scale( insets.right ) + ow;
 
 		if( isCellEditor( c ) ) {
 			// remove top and bottom insets if used as cell editor

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

@@ -20,6 +20,7 @@ import java.awt.Color;
 import java.awt.Component;
 import java.awt.GradientPaint;
 import java.awt.Graphics;
+import java.awt.Graphics2D;
 import java.awt.Insets;
 import java.awt.Paint;
 import javax.swing.AbstractButton;
@@ -42,11 +43,13 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Button.default.hoverBorderColor	Color	optional
  * @uiDefault Button.default.focusedBorderColor	Color
  * @uiDefault Button.default.focusColor			Color
+ * @uiDefault Button.toolbar.focusColor			Color	optional; defaults to Component.focusColor
  * @uiDefault Button.borderWidth				int
  * @uiDefault Button.default.borderWidth		int
  * @uiDefault Button.innerFocusWidth			int or float	optional; defaults to Component.innerFocusWidth
  * @uiDefault Button.toolbar.margin				Insets
  * @uiDefault Button.toolbar.spacingInsets		Insets
+ * @uiDefault Button.toolbar.focusWidth			int or float		optional; default is 1
  * @uiDefault Button.arc						int
  *
  * @author Karl Tauber
@@ -64,25 +67,60 @@ public class FlatButtonBorder
 	protected final Color defaultHoverBorderColor = UIManager.getColor( "Button.default.hoverBorderColor" );
 	protected final Color defaultFocusedBorderColor = UIManager.getColor( "Button.default.focusedBorderColor" );
 	protected final Color defaultFocusColor = UIManager.getColor( "Button.default.focusColor" );
+	/** @since 1.4 */
+	protected final Color toolbarFocusColor = UIManager.getColor( "Button.toolbar.focusColor" );
 	protected final int borderWidth = UIManager.getInt( "Button.borderWidth" );
 	protected final int defaultBorderWidth = UIManager.getInt( "Button.default.borderWidth" );
 	protected final float buttonInnerFocusWidth = FlatUIUtils.getUIFloat( "Button.innerFocusWidth", innerFocusWidth );
 	protected final Insets toolbarMargin = UIManager.getInsets( "Button.toolbar.margin" );
 	protected final Insets toolbarSpacingInsets = UIManager.getInsets( "Button.toolbar.spacingInsets" );
+	/** @since 1.4 */
+	protected final float toolbarFocusWidth = FlatUIUtils.getUIFloat( "Button.toolbar.focusWidth", 1.5f );
 	protected final int arc = UIManager.getInt( "Button.arc" );
 
 	@Override
 	public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
 		if( FlatButtonUI.isContentAreaFilled( c ) &&
 			!FlatButtonUI.isToolBarButton( c ) &&
+			(!FlatButtonUI.isBorderlessButton( c ) || FlatUIUtils.isPermanentFocusOwner( c )) &&
 			!FlatButtonUI.isHelpButton( c ) &&
 			!FlatToggleButtonUI.isTabButton( c ) )
 		  super.paintBorder( c, g, x, y, width, height );
+		else if( FlatButtonUI.isToolBarButton( c ) && isFocused( c ) )
+			paintToolBarFocus( c, g, x, y, width, height );
+	}
+
+	/**
+	 * @since 1.4
+	 */
+	protected void paintToolBarFocus( Component c, Graphics g, int x, int y, int width, int height ) {
+		Graphics2D g2 = (Graphics2D) g.create();
+		try {
+			FlatUIUtils.setRenderingHints( g2 );
+
+			float focusWidth = UIScale.scale( toolbarFocusWidth );
+			float arc = UIScale.scale( (float) getArc( c ) );
+			Color outlineColor = getOutlineColor( c );
+
+			Insets spacing = UIScale.scale( toolbarSpacingInsets );
+			x += spacing.left;
+			y += spacing.top;
+			width -= spacing.left + spacing.right;
+			height -= spacing.top + spacing.bottom;
+
+			g2.setColor( (outlineColor != null) ? outlineColor : getFocusColor( c ) );
+			// not using paintComponentOuterBorder() here because its round edges look too "thick"
+			FlatUIUtils.paintComponentBorder( g2, x, y, width, height, 0, focusWidth, arc );
+		} finally {
+			g2.dispose();
+		}
 	}
 
 	@Override
 	protected Color getFocusColor( Component c ) {
-		return FlatButtonUI.isDefaultButton( c ) ? defaultFocusColor : super.getFocusColor( c );
+		return (toolbarFocusColor != null && FlatButtonUI.isToolBarButton( c ))
+			? toolbarFocusColor
+			: (FlatButtonUI.isDefaultButton( c ) ? defaultFocusColor : super.getFocusColor( c ));
 	}
 
 	@Override

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

@@ -30,6 +30,7 @@ import java.awt.Insets;
 import java.awt.Rectangle;
 import java.awt.geom.RoundRectangle2D;
 import java.beans.PropertyChangeEvent;
+import java.util.Objects;
 import javax.swing.AbstractButton;
 import javax.swing.ButtonModel;
 import javax.swing.Icon;
@@ -129,6 +130,7 @@ public class FlatButtonUI
 	protected Color toolbarSelectedBackground;
 
 	private Icon helpButtonIcon;
+	private Insets defaultMargin;
 
 	private boolean defaults_initialized = false;
 
@@ -184,6 +186,7 @@ public class FlatButtonUI
 			toolbarSelectedBackground = UIManager.getColor( prefix + "toolbar.selectedBackground" );
 
 			helpButtonIcon = UIManager.getIcon( "HelpButton.icon" );
+			defaultMargin = UIManager.getInsets( prefix + "margin" );
 
 			defaults_initialized = true;
 		}
@@ -285,6 +288,10 @@ public class FlatButtonUI
 			(c instanceof AbstractButton && clientPropertyEquals( (AbstractButton) c, BUTTON_TYPE, BUTTON_TYPE_TOOLBAR_BUTTON ));
 	}
 
+	static boolean isBorderlessButton( Component c ) {
+		return c instanceof AbstractButton && clientPropertyEquals( (AbstractButton) c, BUTTON_TYPE, BUTTON_TYPE_BORDERLESS );
+	}
+
 	@Override
 	public void update( Graphics g, JComponent c ) {
 		// fill background if opaque to avoid garbage if user sets opaque to true
@@ -332,8 +339,9 @@ public class FlatButtonUI
 
 			// paint shadow
 			Color shadowColor = def ? defaultShadowColor : this.shadowColor;
-			if( !isToolBarButton && shadowColor != null && shadowWidth > 0 && focusWidth > 0 &&
-				!(isFocusPainted( c ) && FlatUIUtils.isPermanentFocusOwner( c )) && c.isEnabled() )
+			if( shadowColor != null && shadowWidth > 0 && focusWidth > 0 && c.isEnabled() &&
+				!isToolBarButton && !isBorderlessButton( c ) &&
+				!(isFocusPainted( c ) && FlatUIUtils.isPermanentFocusOwner( c )) )
 			{
 				g2.setColor( shadowColor );
 				g2.fill( new RoundRectangle2D.Float( focusWidth, focusWidth + UIScale.scale( (float) shadowWidth ),
@@ -388,7 +396,7 @@ public class FlatButtonUI
 	}
 
 	protected Color getBackground( JComponent c ) {
-		boolean toolBarButton = isToolBarButton( c );
+		boolean toolBarButton = isToolBarButton( c ) || isBorderlessButton( c );
 
 		// selected state
 		if( ((AbstractButton)c).isSelected() ) {
@@ -461,7 +469,7 @@ public class FlatButtonUI
 		if( !c.isEnabled() )
 			return disabledText;
 
-		if( ((AbstractButton)c).isSelected() && !isToolBarButton( c ) )
+		if( ((AbstractButton)c).isSelected() && !(isToolBarButton( c ) || isBorderlessButton( c )) )
 			return selectedForeground;
 
 		// use component foreground if explicitly set
@@ -494,16 +502,23 @@ public class FlatButtonUI
 		} else if( isIconOnlyOrSingleCharacter && ((AbstractButton)c).getIcon() == null ) {
 			// make single-character-no-icon button square (increase width)
 			prefSize.width = Math.max( prefSize.width, prefSize.height );
-		} else if( !isIconOnlyOrSingleCharacter && !isToolBarButton( c ) && c.getBorder() instanceof FlatButtonBorder ) {
+		} else if( !isIconOnlyOrSingleCharacter && !isToolBarButton( c ) &&
+			c.getBorder() instanceof FlatButtonBorder && hasDefaultMargins( c ) )
+		{
 			// apply minimum width/height
-			float focusWidth = FlatUIUtils.getBorderFocusWidth( c );
-			prefSize.width = Math.max( prefSize.width, scale( FlatUIUtils.minimumWidth( c, minimumWidth ) ) + Math.round( focusWidth * 2 ) );
-			prefSize.height = Math.max( prefSize.height, scale( FlatUIUtils.minimumHeight( c, 0 ) ) + Math.round( focusWidth * 2 ) );
+			int fw = Math.round( FlatUIUtils.getBorderFocusWidth( c ) * 2 );
+			prefSize.width = Math.max( prefSize.width, scale( FlatUIUtils.minimumWidth( c, minimumWidth ) ) + fw );
+			prefSize.height = Math.max( prefSize.height, scale( FlatUIUtils.minimumHeight( c, 0 ) ) + fw );
 		}
 
 		return prefSize;
 	}
 
+	private boolean hasDefaultMargins( JComponent c ) {
+		Insets margin = ((AbstractButton)c).getMargin();
+		return margin instanceof UIResource && Objects.equals( margin, defaultMargin );
+	}
+
 	//---- class FlatButtonListener -------------------------------------------
 
 	protected class FlatButtonListener

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

@@ -18,10 +18,13 @@ package com.formdev.flatlaf.ui;
 
 import static com.formdev.flatlaf.FlatClientProperties.*;
 import java.awt.EventQueue;
+import java.awt.Insets;
+import java.awt.Rectangle;
 import java.awt.event.FocusEvent;
 import java.awt.event.MouseEvent;
 import javax.swing.JFormattedTextField;
 import javax.swing.plaf.UIResource;
+import javax.swing.text.BadLocationException;
 import javax.swing.text.DefaultCaret;
 import javax.swing.text.Document;
 import javax.swing.text.JTextComponent;
@@ -61,6 +64,19 @@ public class FlatCaret
 		}
 	}
 
+	@Override
+	protected void adjustVisibility( Rectangle nloc ) {
+		JTextComponent c = getComponent();
+		if( c != null && c.getUI() instanceof FlatTextFieldUI ) {
+			Insets padding = ((FlatTextFieldUI)c.getUI()).getPadding();
+			if( padding != null ) {
+				nloc.x -= padding.left;
+				nloc.y -= padding.top;
+			}
+		}
+		super.adjustVisibility( nloc );
+	}
+
 	@Override
 	public void focusGained( FocusEvent e ) {
 		if( !wasTemporaryLost && (!isMousePressed || selectAllOnMouseClick) )
@@ -92,7 +108,7 @@ public class FlatCaret
 	protected void selectAllOnFocusGained() {
 		JTextComponent c = getComponent();
 		Document doc = c.getDocument();
-		if( doc == null || !c.isEnabled() || !c.isEditable() )
+		if( doc == null || !c.isEnabled() || !c.isEditable() || FlatUIUtils.isCellEditor( c ) )
 			return;
 
 		Object selectAllOnFocusPolicy = c.getClientProperty( SELECT_ALL_ON_FOCUS_POLICY );
@@ -127,4 +143,23 @@ public class FlatCaret
 			moveDot( doc.getLength() );
 		}
 	}
+
+	/**
+	 * @since 1.4
+	 */
+	public void scrollCaretToVisible() {
+		JTextComponent c = getComponent();
+		if( c == null || c.getUI() == null )
+			return;
+
+		try {
+			Rectangle loc = c.getUI().modelToView( c, getDot(), getDotBias() );
+			if( loc != null ) {
+				adjustVisibility( loc );
+				damage( loc );
+			}
+		} catch( BadLocationException ex ) {
+			// ignore
+		}
+	}
 }

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

@@ -17,11 +17,13 @@
 package com.formdev.flatlaf.ui;
 
 import static com.formdev.flatlaf.util.UIScale.scale;
+import static com.formdev.flatlaf.util.UIScale.unscale;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.ComponentOrientation;
 import java.awt.Container;
 import java.awt.Dimension;
+import java.awt.FontMetrics;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.GraphicsConfiguration;
@@ -39,10 +41,9 @@ import java.awt.event.MouseEvent;
 import java.awt.event.MouseListener;
 import java.awt.geom.Rectangle2D;
 import java.beans.PropertyChangeListener;
-import java.lang.ref.WeakReference;
 import javax.swing.AbstractAction;
 import javax.swing.BorderFactory;
-import javax.swing.ComboBoxEditor;
+import javax.swing.CellRendererPane;
 import javax.swing.DefaultListCellRenderer;
 import javax.swing.InputMap;
 import javax.swing.JButton;
@@ -60,13 +61,13 @@ import javax.swing.UIManager;
 import javax.swing.border.AbstractBorder;
 import javax.swing.border.Border;
 import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.UIResource;
 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.FlatClientProperties;
 import com.formdev.flatlaf.util.SystemInfo;
-import com.formdev.flatlaf.util.UIScale;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JComboBox}.
@@ -91,14 +92,17 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Component.borderColor				Color
  * @uiDefault Component.disabledBorderColor		Color
  * @uiDefault ComboBox.editableBackground		Color	optional; defaults to ComboBox.background
+ * @uiDefault ComboBox.focusedBackground		Color	optional
  * @uiDefault ComboBox.disabledBackground		Color
  * @uiDefault ComboBox.disabledForeground		Color
  * @uiDefault ComboBox.buttonBackground			Color
  * @uiDefault ComboBox.buttonEditableBackground	Color
+ * @uiDefault ComboBox.buttonFocusedBackground	Color	optional; defaults to ComboBox.focusedBackground
  * @uiDefault ComboBox.buttonArrowColor			Color
  * @uiDefault ComboBox.buttonDisabledArrowColor	Color
  * @uiDefault ComboBox.buttonHoverArrowColor	Color
  * @uiDefault ComboBox.buttonPressedArrowColor	Color
+ * @uiDefault ComboBox.popupBackground			Color	optional
  *
  * @author Karl Tauber
  */
@@ -114,21 +118,25 @@ public class FlatComboBoxUI
 	protected Color disabledBorderColor;
 
 	protected Color editableBackground;
+	protected Color focusedBackground;
 	protected Color disabledBackground;
 	protected Color disabledForeground;
 
 	protected Color buttonBackground;
 	protected Color buttonEditableBackground;
+	protected Color buttonFocusedBackground;
 	protected Color buttonArrowColor;
 	protected Color buttonDisabledArrowColor;
 	protected Color buttonHoverArrowColor;
 	protected Color buttonPressedArrowColor;
 
+	protected Color popupBackground;
+
 	private MouseListener hoverListener;
 	protected boolean hover;
 	protected boolean pressed;
 
-	private WeakReference<Component> lastRendererComponent;
+	private CellPaddingBorder paddingBorder;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatComboBoxUI();
@@ -194,23 +202,26 @@ public class FlatComboBoxUI
 		disabledBorderColor = UIManager.getColor( "Component.disabledBorderColor" );
 
 		editableBackground = UIManager.getColor( "ComboBox.editableBackground" );
+		focusedBackground = UIManager.getColor( "ComboBox.focusedBackground" );
 		disabledBackground = UIManager.getColor( "ComboBox.disabledBackground" );
 		disabledForeground = UIManager.getColor( "ComboBox.disabledForeground" );
 
 		buttonBackground = UIManager.getColor( "ComboBox.buttonBackground" );
+		buttonFocusedBackground = UIManager.getColor( "ComboBox.buttonFocusedBackground" );
 		buttonEditableBackground = UIManager.getColor( "ComboBox.buttonEditableBackground" );
 		buttonArrowColor = UIManager.getColor( "ComboBox.buttonArrowColor" );
 		buttonDisabledArrowColor = UIManager.getColor( "ComboBox.buttonDisabledArrowColor" );
 		buttonHoverArrowColor = UIManager.getColor( "ComboBox.buttonHoverArrowColor" );
 		buttonPressedArrowColor = UIManager.getColor( "ComboBox.buttonPressedArrowColor" );
 
+		popupBackground = UIManager.getColor( "ComboBox.popupBackground" );
+
 		// set maximumRowCount
 		int maximumRowCount = UIManager.getInt( "ComboBox.maximumRowCount" );
 		if( maximumRowCount > 0 && maximumRowCount != 8 && comboBox.getMaximumRowCount() == 8 )
 			comboBox.setMaximumRowCount( maximumRowCount );
 
-		// scale
-		padding = UIScale.scale( padding );
+		paddingBorder = new CellPaddingBorder( padding );
 
 		MigLayoutVisualPadding.install( comboBox );
 	}
@@ -223,16 +234,22 @@ public class FlatComboBoxUI
 		disabledBorderColor = null;
 
 		editableBackground = null;
+		focusedBackground = null;
 		disabledBackground = null;
 		disabledForeground = null;
 
 		buttonBackground = null;
 		buttonEditableBackground = null;
+		buttonFocusedBackground = null;
 		buttonArrowColor = null;
 		buttonDisabledArrowColor = null;
 		buttonHoverArrowColor = null;
 		buttonPressedArrowColor = null;
 
+		popupBackground = null;
+
+		paddingBorder.uninstall();
+
 		MigLayoutVisualPadding.uninstall( comboBox );
 	}
 
@@ -243,9 +260,16 @@ public class FlatComboBoxUI
 			public void layoutContainer( Container parent ) {
 				super.layoutContainer( parent );
 
-				if( arrowButton != null ) {
+				// on macOS, a Swing combo box is used for AWT component java.awt.Choice
+				// and the font may be (temporary) null
+
+				if( arrowButton != null && comboBox.getFont() != null ) {
+					// 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 );
+
 					Insets insets = getInsets();
-					int buttonWidth = parent.getPreferredSize().height - insets.top - insets.bottom;
+					int buttonWidth = Math.min( parent.getPreferredSize().height - insets.top - insets.bottom, maxButtonWidth );
 					if( buttonWidth != arrowButton.getWidth() ) {
 						// set width of arrow button to preferred height of combobox
 						int xOffset = comboBox.getComponentOrientation().isLeftToRight()
@@ -259,11 +283,6 @@ public class FlatComboBoxUI
 							editor.setBounds( rectangleForCurrentValue() );
 					}
 				}
-
-				if( editor != null && padding != null ) {
-					// fix editor bounds by subtracting padding
-					editor.setBounds( FlatUIUtils.subtractInsets( editor.getBounds(), padding ) );
-				}
 			}
 		};
 	}
@@ -321,39 +340,32 @@ public class FlatComboBoxUI
 	}
 
 	@Override
-	protected ComboBoxEditor createEditor() {
-		ComboBoxEditor comboBoxEditor = super.createEditor();
+	protected void configureEditor() {
+		super.configureEditor();
 
-		Component editor = comboBoxEditor.getEditorComponent();
 		if( editor instanceof JTextField ) {
 			JTextField textField = (JTextField) editor;
 			textField.setColumns( editorColumns );
 
-			// assign a non-null and non-javax.swing.plaf.UIResource border to the text field,
-			// otherwise it is replaced with default text field border when switching LaF
-			// because javax.swing.plaf.basic.BasicComboBoxEditor.BorderlessTextField.setBorder()
-			// uses "border instanceof javax.swing.plaf.basic.BasicComboBoxEditor.UIResource"
-			// instead of "border instanceof javax.swing.plaf.UIResource"
-			textField.setBorder( BorderFactory.createEmptyBorder() );
+			// remove default text field border from editor
+			Border border = textField.getBorder();
+			if( border == null || border instanceof UIResource ) {
+				// assign a non-null and non-javax.swing.plaf.UIResource border to the text field,
+				// otherwise it is replaced with default text field border when switching LaF
+				// because javax.swing.plaf.basic.BasicComboBoxEditor.BorderlessTextField.setBorder()
+				// uses "border instanceof javax.swing.plaf.basic.BasicComboBoxEditor.UIResource"
+				// instead of "border instanceof javax.swing.plaf.UIResource"
+				textField.setBorder( BorderFactory.createEmptyBorder() );
+			}
 		}
 
-		return comboBoxEditor;
-	}
-
-	@Override
-	protected void configureEditor() {
-		super.configureEditor();
-
-		// remove default text field border from editor
-		if( editor instanceof JTextField && ((JTextField)editor).getBorder() instanceof FlatTextBorder )
-			((JTextField)editor).setBorder( BorderFactory.createEmptyBorder() );
-
 		// explicitly make non-opaque
 		if( editor instanceof JComponent )
 			((JComponent)editor).setOpaque( false );
 
 		editor.applyComponentOrientation( comboBox.getComponentOrientation() );
 
+		updateEditorPadding();
 		updateEditorColors();
 
 		// macOS
@@ -370,6 +382,25 @@ public class FlatComboBoxUI
 		}
 	}
 
+	private void updateEditorPadding() {
+		if( !(editor instanceof JTextField) )
+			return;
+
+		JTextField textField = (JTextField) editor;
+		Insets insets = textField.getInsets();
+		Insets pad = padding;
+		if( insets.top != 0 || insets.left != 0 || insets.bottom != 0 || insets.right != 0 ) {
+			// if text field has custom border, subtract text field insets from padding
+			pad = new Insets(
+				unscale( Math.max( scale( padding.top ) - insets.top, 0 ) ),
+				unscale( Math.max( scale( padding.left ) - insets.left, 0 ) ),
+				unscale( Math.max( scale( padding.bottom ) - insets.bottom, 0 ) ),
+				unscale( Math.max( scale( padding.right ) - insets.right, 0 ) )
+			);
+		}
+		textField.putClientProperty( FlatClientProperties.TEXT_FIELD_PADDING, pad );
+	}
+
 	private void updateEditorColors() {
 		// use non-UIResource colors because when SwingUtilities.updateComponentTreeUI()
 		// is used, then the editor is updated after the combobox and the
@@ -390,6 +421,15 @@ public class FlatComboBoxUI
 	public void update( Graphics g, JComponent c ) {
 		float focusWidth = FlatUIUtils.getBorderFocusWidth( c );
 		float arc = FlatUIUtils.getBorderArc( c );
+		boolean paintBackground = true;
+
+		// check whether used as cell renderer
+		boolean isCellRenderer = c.getParent() instanceof CellRendererPane;
+		if( isCellRenderer ) {
+			focusWidth = 0;
+			arc = 0;
+			paintBackground = isCellRendererBackgroundChanged();
+		}
 
 		// fill background if opaque to avoid garbage if user sets opaque to true
 		if( c.isOpaque() && (focusWidth > 0 || arc > 0) )
@@ -407,27 +447,33 @@ public class FlatComboBoxUI
 		boolean isLeftToRight = comboBox.getComponentOrientation().isLeftToRight();
 
 		// paint background
-		g2.setColor( getBackground( enabled ) );
-		FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
-
-		// paint arrow button background
-		if( enabled ) {
-			g2.setColor( paintButton ? buttonEditableBackground : buttonBackground );
-			Shape oldClip = g2.getClip();
-			if( isLeftToRight )
-				g2.clipRect( arrowX, 0, width - arrowX, height );
-			else
-				g2.clipRect( 0, 0, arrowX + arrowWidth, height );
+		if( paintBackground || c.isOpaque() ) {
+			g2.setColor( getBackground( enabled ) );
 			FlatUIUtils.paintComponentBackground( g2, 0, 0, width, height, focusWidth, arc );
-			g2.setClip( oldClip );
-		}
 
-		// paint vertical line between value and arrow button
-		if( paintButton ) {
-			g2.setColor( enabled ? borderColor : disabledBorderColor );
-			float lw = scale( 1f );
-			float lx = isLeftToRight ? arrowX : arrowX + arrowWidth - lw;
-			g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - 1 - (focusWidth * 2)) );
+			// paint arrow button background
+			if( enabled && !isCellRenderer ) {
+				g2.setColor( paintButton
+					? buttonEditableBackground
+					: (buttonFocusedBackground != null || focusedBackground != null) && isPermanentFocusOwner( comboBox )
+						? (buttonFocusedBackground != null ? buttonFocusedBackground : focusedBackground)
+						: 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 button
+			if( paintButton ) {
+				g2.setColor( enabled ? borderColor : disabledBorderColor );
+				float lw = scale( 1f );
+				float lx = isLeftToRight ? arrowX : arrowX + arrowWidth - lw;
+				g2.fill( new Rectangle2D.Float( lx, focusWidth, lw, height - 1 - (focusWidth * 2)) );
+			}
 		}
 
 		// avoid that the "current value" renderer is invoked with enabled antialiasing
@@ -439,30 +485,33 @@ public class FlatComboBoxUI
 	@Override
 	@SuppressWarnings( "unchecked" )
 	public void paintCurrentValue( Graphics g, Rectangle bounds, boolean hasFocus ) {
+		paddingBorder.uninstall();
+
 		ListCellRenderer<Object> renderer = comboBox.getRenderer();
-		uninstallCellPaddingBorder( renderer );
 		if( renderer == null )
 			renderer = new DefaultListCellRenderer();
 		Component c = renderer.getListCellRendererComponent( listBox, comboBox.getSelectedItem(), -1, false, false );
 		c.setFont( comboBox.getFont() );
 		c.applyComponentOrientation( comboBox.getComponentOrientation() );
-		uninstallCellPaddingBorder( c );
 
 		boolean enabled = comboBox.isEnabled();
 		c.setBackground( getBackground( enabled ) );
 		c.setForeground( getForeground( enabled ) );
 
+		// make renderer component temporary non-opaque to avoid that renderer paints
+		// background outside of border if combobox uses larger arc for edges
+		// (e.g. FlatClientProperties.COMPONENT_ROUND_RECT is true)
+		if( c instanceof JComponent )
+			((JComponent)c).setOpaque( false );
+
 		boolean shouldValidate = (c instanceof JPanel);
-		if( padding != null )
-			bounds = FlatUIUtils.subtractInsets( bounds, padding );
-
-		// increase the size of the rendering area to make sure that the text
-		// is vertically aligned with other component types (e.g. JTextField)
-		Insets rendererInsets = getRendererComponentInsets( c );
-		if( rendererInsets != null )
-			bounds = FlatUIUtils.addInsets( bounds, rendererInsets );
 
+		paddingBorder.install( c );
 		currentValuePane.paintComponent( g, c, comboBox, bounds.x, bounds.y, bounds.width, bounds.height, shouldValidate );
+		paddingBorder.uninstall();
+
+		if( c instanceof JComponent )
+			((JComponent)c).setOpaque( true );
 	}
 
 	@Override
@@ -471,9 +520,20 @@ public class FlatComboBoxUI
 	}
 
 	protected Color getBackground( boolean enabled ) {
-		return enabled
-			? (editableBackground != null && comboBox.isEditable() ? editableBackground : comboBox.getBackground())
-			: (isIntelliJTheme ? FlatUIUtils.getParentBackground( comboBox ) : disabledBackground);
+		if( enabled ) {
+			Color background = comboBox.getBackground();
+
+			// always use explicitly set color
+			if( !(background instanceof UIResource) )
+				return background;
+
+			// focused
+			if( focusedBackground != null && isPermanentFocusOwner( comboBox ) )
+				return focusedBackground;
+
+			return (editableBackground != null && comboBox.isEditable()) ? editableBackground : background;
+		} else
+			return isIntelliJTheme ? FlatUIUtils.getParentBackground( comboBox ) : disabledBackground;
 	}
 
 	protected Color getForeground( boolean enabled ) {
@@ -483,75 +543,68 @@ public class FlatComboBoxUI
 	@Override
 	public Dimension getMinimumSize( JComponent c ) {
 		Dimension minimumSize = super.getMinimumSize( c );
-		minimumSize.width = Math.max( minimumSize.width, scale( FlatUIUtils.minimumWidth( c, minimumWidth ) ) );
+		int fw = Math.round( FlatUIUtils.getBorderFocusWidth( c ) * 2 );
+		minimumSize.width = Math.max( minimumSize.width, scale( FlatUIUtils.minimumWidth( c, minimumWidth ) ) + fw );
 		return minimumSize;
 	}
 
 	@Override
 	protected Dimension getDefaultSize() {
-		@SuppressWarnings( "unchecked" )
-		ListCellRenderer<Object> renderer = comboBox.getRenderer();
-		uninstallCellPaddingBorder( renderer );
-
+		paddingBorder.uninstall();
 		Dimension size = super.getDefaultSize();
-
-		uninstallCellPaddingBorder( renderer );
+		paddingBorder.uninstall();
 		return size;
 	}
 
 	@Override
 	protected Dimension getDisplaySize() {
-		@SuppressWarnings( "unchecked" )
-		ListCellRenderer<Object> renderer = comboBox.getRenderer();
-		uninstallCellPaddingBorder( renderer );
-
+		paddingBorder.uninstall();
 		Dimension displaySize = super.getDisplaySize();
+		paddingBorder.uninstall();
+
+		// remove padding added in super.getDisplaySize()
+		int displayWidth = displaySize.width - padding.left - padding.right;
+		int displayHeight = displaySize.height - padding.top - padding.bottom;
 
 		// recalculate width without hardcoded 100 under special conditions
-		if( displaySize.width == 100 + padding.left + padding.right &&
+		if( displayWidth == 100 &&
 			comboBox.isEditable() &&
 			comboBox.getItemCount() == 0 &&
 			comboBox.getPrototypeDisplayValue() == null )
 		{
-			int width = getDefaultSize().width;
-			width = Math.max( width, editor.getPreferredSize().width );
-			width += padding.left + padding.right;
-			displaySize = new Dimension( width, displaySize.height );
+			displayWidth = Math.max( getDefaultSize().width, editor.getPreferredSize().width );
 		}
 
-		uninstallCellPaddingBorder( renderer );
-		return displaySize;
+		return new Dimension( displayWidth, displayHeight );
 	}
 
 	@Override
 	protected Dimension getSizeForComponent( Component comp ) {
+		paddingBorder.install( comp );
 		Dimension size = super.getSizeForComponent( comp );
-
-		// remove the renderer border top/bottom insets from the size to make sure that
-		// the combobox gets the same height as other component types (e.g. JTextField)
-		Insets rendererInsets = getRendererComponentInsets( comp );
-		if( rendererInsets != null )
-			size = new Dimension( size.width, size.height - rendererInsets.top - rendererInsets.bottom );
-
+		paddingBorder.uninstall();
 		return size;
 	}
 
-	private Insets getRendererComponentInsets( Component rendererComponent ) {
-		if( rendererComponent instanceof JComponent ) {
-			Border rendererBorder = ((JComponent)rendererComponent).getBorder();
-			if( rendererBorder != null )
-				return rendererBorder.getBorderInsets( rendererComponent );
-		}
-
-		return null;
+	private boolean isCellRenderer() {
+		return comboBox.getParent() instanceof CellRendererPane;
 	}
 
-	private void uninstallCellPaddingBorder( Object o ) {
-		CellPaddingBorder.uninstall( o );
-		if( lastRendererComponent != null ) {
-			CellPaddingBorder.uninstall( lastRendererComponent );
-			lastRendererComponent = null;
-		}
+	private boolean isCellRendererBackgroundChanged() {
+		// parent is a CellRendererPane, parentParent is e.g. a JTable
+		Container parentParent = comboBox.getParent().getParent();
+		return parentParent != null && !comboBox.getBackground().equals( parentParent.getBackground() );
+	}
+
+	/**
+	 * @since 1.3
+	 */
+	public static boolean isPermanentFocusOwner( JComboBox<?> comboBox ) {
+		if( comboBox.isEditable() ) {
+			Component editorComponent = comboBox.getEditor().getEditorComponent();
+			return (editorComponent != null) ? FlatUIUtils.isPermanentFocusOwner( editorComponent ) : false;
+		} else
+			return FlatUIUtils.isPermanentFocusOwner( comboBox );
 	}
 
 	//---- class FlatComboBoxButton -------------------------------------------
@@ -580,6 +633,14 @@ public class FlatComboBoxUI
 		protected boolean isPressed() {
 			return super.isPressed() || (!comboBox.isEditable() ? pressed : false);
 		}
+
+		@Override
+		protected Color getArrowColor() {
+			if( isCellRenderer() && isCellRendererBackgroundChanged() )
+				return comboBox.getForeground();
+
+			return super.getArrowColor();
+		}
 	}
 
 	//---- class FlatComboPopup -----------------------------------------------
@@ -588,13 +649,11 @@ public class FlatComboBoxUI
 	protected class FlatComboPopup
 		extends BasicComboPopup
 	{
-		private CellPaddingBorder paddingBorder;
-
 		protected FlatComboPopup( JComboBox combo ) {
 			super( combo );
 
 			// BasicComboPopup listens to JComboBox.componentOrientation and updates
-			// the component orientation of the list, scroller and popup, but when
+			// the component orientation of the list, scroll pane and popup, but when
 			// switching the LaF and a new combo popup is created, the component
 			// orientation is not applied.
 			ComponentOrientation o = comboBox.getComponentOrientation();
@@ -648,6 +707,9 @@ public class FlatComboBoxUI
 		protected void configurePopup() {
 			super.configurePopup();
 
+			// make opaque to avoid that background shines thru border (e.g. at 150% scaling)
+			setOpaque( true );
+
 			Border border = UIManager.getBorder( "PopupMenu.border" );
 			if( border != null )
 				setBorder( border );
@@ -658,6 +720,8 @@ public class FlatComboBoxUI
 			super.configureList();
 
 			list.setCellRenderer( new PopupListCellRenderer() );
+			if( popupBackground != null )
+		        list.setBackground( popupBackground );
 		}
 
 		@Override
@@ -671,6 +735,34 @@ public class FlatComboBoxUI
 			};
 		}
 
+		@Override
+		protected int getPopupHeightForRowCount( int maxRowCount ) {
+			int height = super.getPopupHeightForRowCount( maxRowCount );
+			paddingBorder.uninstall();
+			return height;
+		}
+
+		@Override
+		public void show( Component invoker, int x, int y ) {
+			// Java 8: fix y coordinate if popup is shown above the combobox
+			// (already fixed in Java 9+ https://bugs.openjdk.java.net/browse/JDK-7072653)
+			if( y < 0 && !SystemInfo.isJava_9_orLater ) {
+				Border popupBorder = getBorder();
+				if( popupBorder != null ) {
+					Insets insets = popupBorder.getBorderInsets( this );
+					y -= insets.top + insets.bottom;
+				}
+			}
+
+			super.show( invoker, x, y );
+		}
+
+		@Override
+		protected void paintChildren( Graphics g ) {
+			super.paintChildren( g );
+			paddingBorder.uninstall();
+		}
+
 		//---- class PopupListCellRenderer -----
 
 		private class PopupListCellRenderer
@@ -680,22 +772,15 @@ public class FlatComboBoxUI
 			public Component getListCellRendererComponent( JList list, Object value,
 				int index, boolean isSelected, boolean cellHasFocus )
 			{
-				ListCellRenderer renderer = comboBox.getRenderer();
-				CellPaddingBorder.uninstall( renderer );
-				CellPaddingBorder.uninstall( lastRendererComponent );
+				paddingBorder.uninstall();
 
+				ListCellRenderer renderer = comboBox.getRenderer();
 				if( renderer == null )
 					renderer = new DefaultListCellRenderer();
 				Component c = renderer.getListCellRendererComponent( list, value, index, isSelected, cellHasFocus );
 				c.applyComponentOrientation( comboBox.getComponentOrientation() );
 
-				if( c instanceof JComponent ) {
-					if( paddingBorder == null )
-						paddingBorder = new CellPaddingBorder( padding );
-					paddingBorder.install( (JComponent) c );
-				}
-
-				lastRendererComponent = (c != renderer) ? new WeakReference<>( c ) : null;
+				paddingBorder.install( c );
 
 				return c;
 			}
@@ -705,50 +790,72 @@ public class FlatComboBoxUI
 	//---- class CellPaddingBorder --------------------------------------------
 
 	/**
-	 * Cell padding border used only in popup list.
-	 *
+	 * Cell padding border used in popup list and for current value if not editable.
+	 * <p>
 	 * The insets are the union of the cell padding and the renderer border insets,
 	 * which vertically aligns text in popup list with text in combobox.
-	 *
-	 * The renderer border is painted on the outside of this border.
+	 * <p>
+	 * The renderer border is painted on the outer side of this border.
 	 */
 	private static class CellPaddingBorder
 		extends AbstractBorder
 	{
 		private final Insets padding;
+		private JComponent rendererComponent;
 		private Border rendererBorder;
 
 		CellPaddingBorder( Insets padding ) {
 			this.padding = padding;
 		}
 
-		void install( JComponent rendererComponent ) {
-			Border oldBorder = rendererComponent.getBorder();
-			if( !(oldBorder instanceof CellPaddingBorder) ) {
-				rendererBorder = oldBorder;
-				rendererComponent.setBorder( this );
-			}
-		}
-
-		static void uninstall( Object o ) {
-			if( o instanceof WeakReference )
-				o = ((WeakReference<?>)o).get();
-
-			if( !(o instanceof JComponent) )
+		// 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 ) {
+			if( !(c instanceof JComponent) )
 				return;
 
-			JComponent rendererComponent = (JComponent) o;
-			Border border = rendererComponent.getBorder();
-			if( border instanceof CellPaddingBorder ) {
-				CellPaddingBorder paddingBorder = (CellPaddingBorder) border;
-				rendererComponent.setBorder( paddingBorder.rendererBorder );
-				paddingBorder.rendererBorder = null;
-			}
+			JComponent jc = (JComponent) c;
+			Border oldBorder = jc.getBorder();
+			if( oldBorder == this )
+				return; // already installed
+
+			// component already has a padding border --> uninstall it
+			// (may happen if single renderer instance is used in multiple comboboxes)
+			if( oldBorder instanceof CellPaddingBorder )
+				((CellPaddingBorder)oldBorder).uninstall();
+
+			// this border can be installed only at one component
+			// (may happen if a renderer returns varying components)
+			uninstall();
+
+			// remember component where this border was installed for uninstall
+			rendererComponent = jc;
+
+			// remember old border and replace it
+			rendererBorder = jc.getBorder();
+			jc.setBorder( this );
+		}
+
+		/**
+		 * Uninstall border from previously installed component.
+		 * Because this border is installed in PopupListCellRenderer.getListCellRendererComponent(),
+		 * there is no single place to uninstall it.
+		 * This is the reason why this method is called from various places.
+		 */
+		synchronized void uninstall() {
+			if( rendererComponent == null )
+				return;
+
+			if( rendererComponent.getBorder() == this )
+				rendererComponent.setBorder( rendererBorder );
+			rendererComponent = null;
+			rendererBorder = null;
 		}
 
 		@Override
-		public Insets getBorderInsets( Component c, Insets insets ) {
-			if( rendererBorder != null ) {
+		synchronized public Insets getBorderInsets( Component c, Insets insets ) {
+			Insets padding = scale( this.padding );
+			if( rendererBorder != null && !(rendererBorder instanceof CellPaddingBorder) ) {
 				Insets insideInsets = rendererBorder.getBorderInsets( c );
 				insets.top = Math.max( padding.top, insideInsets.top );
 				insets.left = Math.max( padding.left, insideInsets.left );

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

@@ -16,10 +16,12 @@
 
 package com.formdev.flatlaf.ui;
 
+import java.awt.Color;
 import java.awt.Component;
 import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.EventQueue;
+import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Image;
 import java.awt.Insets;
@@ -28,11 +30,13 @@ import java.awt.Point;
 import java.awt.event.ActionListener;
 import java.awt.event.MouseEvent;
 import java.awt.image.BufferedImage;
+import java.beans.PropertyChangeListener;
 import java.beans.PropertyVetoException;
 import javax.swing.BorderFactory;
 import javax.swing.ImageIcon;
 import javax.swing.JButton;
 import javax.swing.JComponent;
+import javax.swing.JDesktopPane;
 import javax.swing.event.MouseInputAdapter;
 import javax.swing.event.MouseInputListener;
 import javax.swing.JLabel;
@@ -45,6 +49,7 @@ import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicDesktopIconUI;
+import com.formdev.flatlaf.util.MultiResolutionImageSupport;
 import com.formdev.flatlaf.util.UIScale;
 
 /**
@@ -75,11 +80,21 @@ public class FlatDesktopIconUI
 	private JToolTip titleTip;
 	private ActionListener closeListener;
 	private MouseInputListener mouseInputListener;
+	private PropertyChangeListener ancestorListener;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatDesktopIconUI();
 	}
 
+	@Override
+	public void installUI( JComponent c ) {
+		super.installUI( c );
+
+		// update dock icon preview if already iconified
+		if( c.isDisplayable() )
+			updateDockIconPreviewLater();
+	}
+
 	@Override
 	public void uninstallUI( JComponent c ) {
 		super.uninstallUI( c );
@@ -136,6 +151,17 @@ public class FlatDesktopIconUI
 		};
 		closeButton.addActionListener( closeListener );
 		closeButton.addMouseListener( mouseInputListener );
+
+		ancestorListener = e -> {
+			if( e.getNewValue() != null ) {
+				// update dock icon preview if desktopIcon is added to desktop (internal frame was iconified)
+				updateDockIconPreviewLater();
+			} else {
+				// remove preview icon to release memory
+				dockIcon.setIcon( null );
+			}
+		};
+		desktopIcon.addPropertyChangeListener( "ancestor", ancestorListener );
 	}
 
 	@Override
@@ -146,6 +172,9 @@ public class FlatDesktopIconUI
 		closeButton.removeMouseListener( mouseInputListener );
 		closeListener = null;
 		mouseInputListener = null;
+
+		desktopIcon.removePropertyChangeListener( "ancestor", ancestorListener );
+		ancestorListener = null;
 	}
 
 	@Override
@@ -228,15 +257,30 @@ public class FlatDesktopIconUI
 		return getPreferredSize( c );
 	}
 
-	void updateDockIcon() {
+	@Override
+	public void update( Graphics g, JComponent c ) {
+		if( c.isOpaque() ) {
+			// fill background with color derived from desktop pane
+			Color background = c.getBackground();
+			JDesktopPane desktopPane = desktopIcon.getDesktopPane();
+			g.setColor( (desktopPane != null)
+				? FlatUIUtils.deriveColor( background, desktopPane.getBackground() )
+				: background );
+			g.fillRect( 0, 0, c.getWidth(), c.getHeight() );
+		}
+
+		paint( g, c );
+	}
+
+	private void updateDockIconPreviewLater() {
 		// use invoke later to make sure that components are updated when switching LaF
 		EventQueue.invokeLater( () -> {
 			if( dockIcon != null )
-				updateDockIconLater();
+				updateDockIconPreview();
 		} );
 	}
 
-	private void updateDockIconLater() {
+	protected void updateDockIconPreview() {
 		// make sure that frame is not selected
 		if( frame.isSelected() ) {
 			try {
@@ -246,13 +290,22 @@ public class FlatDesktopIconUI
 			}
 		}
 
+		// layout internal frame title pane, which was recreated when switching Laf
+		// (directly invoke doLayout() because frame.validate() does not work here
+		// because frame is not displayable)
+		if( !frame.isValid() )
+			frame.doLayout();
+		for( Component c : frame.getComponents() ) {
+			if( !c.isValid() )
+				c.doLayout();
+		}
+
 		// paint internal frame to buffered image
 		int frameWidth = Math.max( frame.getWidth(), 1 );
 		int frameHeight = Math.max( frame.getHeight(), 1 );
 		BufferedImage frameImage = new BufferedImage( frameWidth, frameHeight, BufferedImage.TYPE_INT_ARGB );
 		Graphics2D g = frameImage.createGraphics();
 		try {
-			//TODO fix missing internal frame header when switching LaF
 			frame.paint( g );
 		} finally {
 			g.dispose();
@@ -270,6 +323,27 @@ public class FlatDesktopIconUI
 
 		// scale preview
 		Image previewImage = frameImage.getScaledInstance( previewWidth, previewHeight, Image.SCALE_SMOOTH );
+		if( MultiResolutionImageSupport.isAvailable() ) {
+			// On HiDPI screens, create preview images for 1x, 2x and current scale factor.
+			// The icon then chooses the best resolution for painting, which is usually
+			// the one for the current scale factor. But if changing scale factor or
+			// moving window to another screen with different scale factor, then another
+			// resolution may be used because the preview icon is not updated.
+			Image previewImage2x = frameImage.getScaledInstance( previewWidth * 2, previewHeight * 2, Image.SCALE_SMOOTH );
+			double scaleFactor = UIScale.getSystemScaleFactor( desktopIcon.getGraphicsConfiguration() );
+			if( scaleFactor != 1 && scaleFactor != 2 ) {
+				Image previewImageCurrent = frameImage.getScaledInstance(
+					(int) Math.round( previewWidth * scaleFactor ),
+					(int) Math.round( previewHeight * scaleFactor ),
+					Image.SCALE_SMOOTH );
+
+				// the images must be ordered by resolution
+				previewImage = (scaleFactor < 2)
+					? MultiResolutionImageSupport.create( 0, previewImage, previewImageCurrent, previewImage2x )
+					: MultiResolutionImageSupport.create( 0, previewImage, previewImage2x, previewImageCurrent );
+			} else
+				previewImage = MultiResolutionImageSupport.create( 0, previewImage, previewImage2x );
+		}
 		dockIcon.setIcon( new ImageIcon( previewImage ) );
 	}
 

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

@@ -16,11 +16,16 @@
 
 package com.formdev.flatlaf.ui;
 
-import javax.swing.DefaultDesktopManager;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.EventQueue;
+import java.awt.event.ComponentAdapter;
+import java.awt.event.ComponentEvent;
+import java.awt.event.ContainerEvent;
+import java.awt.event.ContainerListener;
 import javax.swing.JComponent;
-import javax.swing.JInternalFrame;
+import javax.swing.JInternalFrame.JDesktopIcon;
 import javax.swing.plaf.ComponentUI;
-import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicDesktopPaneUI;
 
 /**
@@ -36,30 +41,96 @@ import javax.swing.plaf.basic.BasicDesktopPaneUI;
 public class FlatDesktopPaneUI
 	extends BasicDesktopPaneUI
 {
+	private LayoutDockListener layoutDockListener;
+	private boolean layoutDockPending;
+
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatDesktopPaneUI();
 	}
 
 	@Override
-	protected void installDesktopManager() {
-		desktopManager = desktop.getDesktopManager();
-		if( desktopManager == null ) {
-			desktopManager = new FlatDesktopManager();
-			desktop.setDesktopManager( desktopManager );
+	public void installUI( JComponent c ) {
+		super.installUI( c );
+
+		layoutDockLaterOnce();
+	}
+
+	@Override
+	protected void installListeners() {
+		super.installListeners();
+
+		layoutDockListener = new LayoutDockListener();
+		desktop.addContainerListener( layoutDockListener );
+		desktop.addComponentListener( layoutDockListener );
+	}
+
+	@Override
+	protected void uninstallListeners() {
+		super.uninstallListeners();
+
+		desktop.removeContainerListener( layoutDockListener );
+		desktop.removeComponentListener( layoutDockListener );
+		layoutDockListener = null;
+	}
+
+	private void layoutDockLaterOnce() {
+		if( layoutDockPending )
+			return;
+		layoutDockPending = true;
+
+		EventQueue.invokeLater( () -> {
+			layoutDockPending = false;
+			if( desktop != null )
+				layoutDock();
+		} );
+	}
+
+	protected void layoutDock() {
+		Dimension desktopSize = desktop.getSize();
+		int x = 0;
+		int y = desktopSize.height;
+		int rowHeight = 0;
+
+		for( Component c : desktop.getComponents() ) {
+			if( !(c instanceof JDesktopIcon) )
+				continue;
+
+			JDesktopIcon icon = (JDesktopIcon) c;
+			Dimension iconSize = icon.getPreferredSize();
+
+			if( x + iconSize.width > desktopSize.width ) {
+				// new row
+				x = 0;
+				y -= rowHeight;
+				rowHeight = 0;
+			}
+
+			icon.setLocation( x, y - iconSize.height );
+
+			x += iconSize.width;
+			rowHeight = Math.max( iconSize.height, rowHeight );
 		}
 	}
 
-	//---- class FlatDesktopManager -------------------------------------------
+	//---- class LayoutDockListener -------------------------------------------
 
-	private class FlatDesktopManager
-		extends DefaultDesktopManager
-		implements UIResource
+	private class LayoutDockListener
+		extends ComponentAdapter
+		implements ContainerListener
 	{
 		@Override
-		public void iconifyFrame( JInternalFrame f ) {
-			super.iconifyFrame( f );
+		public void componentAdded( ContainerEvent e ) {
+			layoutDockLaterOnce();
+		}
 
-			((FlatDesktopIconUI)f.getDesktopIcon().getUI()).updateDockIcon();
+		@Override
+		public void componentRemoved( ContainerEvent e ) {
+			layoutDockLaterOnce();
+		}
+
+		@Override
+		public void componentResized( ComponentEvent e ) {
+			layoutDockLaterOnce();
 		}
 	}
 }

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

@@ -17,15 +17,17 @@
 package com.formdev.flatlaf.ui;
 
 import static com.formdev.flatlaf.util.UIScale.scale;
+import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
+import java.awt.Insets;
+import java.awt.event.FocusListener;
 import java.beans.PropertyChangeEvent;
 import javax.swing.JComponent;
 import javax.swing.JEditorPane;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
-import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicEditorPaneUI;
 import javax.swing.text.JTextComponent;
 import com.formdev.flatlaf.FlatClientProperties;
@@ -53,6 +55,7 @@ import com.formdev.flatlaf.util.HiDPIUtils;
  *
  * @uiDefault Component.minimumWidth			int
  * @uiDefault Component.isIntelliJTheme			boolean
+ * @uiDefault EditorPane.focusedBackground		Color	optional
  *
  * @author Karl Tauber
  */
@@ -61,8 +64,12 @@ public class FlatEditorPaneUI
 {
 	protected int minimumWidth;
 	protected boolean isIntelliJTheme;
+	protected Color focusedBackground;
+
+	private Insets defaultMargin;
 
 	private Object oldHonorDisplayProperties;
+	private FocusListener focusListener;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatEditorPaneUI();
@@ -72,8 +79,12 @@ public class FlatEditorPaneUI
 	protected void installDefaults() {
 		super.installDefaults();
 
+		String prefix = getPropertyPrefix();
 		minimumWidth = UIManager.getInt( "Component.minimumWidth" );
 		isIntelliJTheme = UIManager.getBoolean( "Component.isIntelliJTheme" );
+		focusedBackground = UIManager.getColor( prefix + ".focusedBackground" );
+
+		defaultMargin = UIManager.getInsets( prefix + ".margin" );
 
 		// use component font and foreground for HTML text
 		oldHonorDisplayProperties = getComponent().getClientProperty( JEditorPane.HONOR_DISPLAY_PROPERTIES );
@@ -84,9 +95,28 @@ public class FlatEditorPaneUI
 	protected void uninstallDefaults() {
 		super.uninstallDefaults();
 
+		focusedBackground = null;
+
 		getComponent().putClientProperty( JEditorPane.HONOR_DISPLAY_PROPERTIES, oldHonorDisplayProperties );
 	}
 
+	@Override
+	protected void installListeners() {
+		super.installListeners();
+
+		// necessary to update focus background
+		focusListener = new FlatUIUtils.RepaintFocusListener( getComponent(), c -> focusedBackground != null );
+		getComponent().addFocusListener( focusListener );
+	}
+
+	@Override
+	protected void uninstallListeners() {
+		super.uninstallListeners();
+
+		getComponent().removeFocusListener( focusListener );
+		focusListener = null;
+	}
+
 	@Override
 	protected void propertyChange( PropertyChangeEvent e ) {
 		super.propertyChange( e );
@@ -103,15 +133,19 @@ public class FlatEditorPaneUI
 
 	@Override
 	public Dimension getPreferredSize( JComponent c ) {
-		return applyMinimumWidth( c, super.getPreferredSize( c ), minimumWidth );
+		return applyMinimumWidth( c, super.getPreferredSize( c ), minimumWidth, defaultMargin );
 	}
 
 	@Override
 	public Dimension getMinimumSize( JComponent c ) {
-		return applyMinimumWidth( c, super.getMinimumSize( c ), minimumWidth );
+		return applyMinimumWidth( c, super.getMinimumSize( c ), minimumWidth, defaultMargin );
 	}
 
-	static Dimension applyMinimumWidth( JComponent c, Dimension size, int minimumWidth ) {
+	static Dimension applyMinimumWidth( JComponent c, Dimension size, int minimumWidth, Insets defaultMargin ) {
+		// do not apply minimum width if JTextComponent.margin is set
+		if( !FlatTextFieldUI.hasDefaultMargins( c, defaultMargin ) )
+			return size;
+
 		// Assume that text area is in a scroll pane (that displays the border)
 		// and subtract 1px border line width.
 		// Using "(scale( 1 ) * 2)" instead of "scale( 2 )" to deal with rounding
@@ -128,14 +162,11 @@ public class FlatEditorPaneUI
 
 	@Override
 	protected void paintBackground( Graphics g ) {
-		JTextComponent c = getComponent();
+		paintBackground( g, getComponent(), isIntelliJTheme, focusedBackground );
+	}
 
-		// for compatibility with IntelliJ themes
-		if( isIntelliJTheme && (!c.isEnabled() || !c.isEditable()) && (c.getBackground() instanceof UIResource) ) {
-			FlatUIUtils.paintParentBackground( g, c );
-			return;
-		}
-
-		super.paintBackground( g );
+	static void paintBackground( Graphics g, JTextComponent c, boolean isIntelliJTheme, Color focusedBackground ) {
+		g.setColor( FlatTextFieldUI.getBackground( c, isIntelliJTheme, focusedBackground ) );
+		g.fillRect( 0, 0, c.getWidth(), c.getHeight() );
 	}
 }

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

@@ -262,12 +262,20 @@ public class FlatFileChooserUI
 
 	@Override
 	public FileView getFileView( JFileChooser fc ) {
-		return fileView;
+		return doNotUseSystemIcons() ? super.getFileView( fc ) : fileView;
 	}
 
 	@Override
 	public void clearIconCache() {
-		fileView.clearIconCache();
+		if( doNotUseSystemIcons() )
+			super.clearIconCache();
+		else
+			fileView.clearIconCache();
+	}
+
+	private boolean doNotUseSystemIcons() {
+		// Java 17 32bit craches on Windows when using system icons
+		return SystemInfo.isWindows && SystemInfo.isJava_17_orLater && !SystemInfo.isX86_64;
 	}
 
 	//---- class FlatFileView -------------------------------------------------

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

@@ -39,11 +39,10 @@ import javax.swing.plaf.ComponentUI;
  *
  * <!-- FlatTextFieldUI -->
  *
- * @uiDefault TextComponent.arc							int
- * @uiDefault Component.focusWidth						int
  * @uiDefault Component.minimumWidth					int
  * @uiDefault Component.isIntelliJTheme					boolean
  * @uiDefault FormattedTextField.placeholderForeground	Color
+ * @uiDefault FormattedTextField.focusedBackground		Color	optional
  * @uiDefault TextComponent.selectAllOnFocusPolicy		String	never, once (default) or always
  * @uiDefault TextComponent.selectAllOnMouseClick		boolean
  *

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

@@ -21,6 +21,7 @@ import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.LayoutManager;
+import java.awt.Rectangle;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import javax.swing.BorderFactory;
@@ -146,6 +147,19 @@ public class FlatInternalFrameTitlePane
 		closeButton.setVisible( frame.isClosable() );
 	}
 
+	Rectangle getFrameIconBounds() {
+		Icon icon = titleLabel.getIcon();
+		if( icon == null )
+			return null;
+
+		int iconWidth = icon.getIconWidth();
+		int iconHeight = icon.getIconHeight();
+		boolean leftToRight = titleLabel.getComponentOrientation().isLeftToRight();
+		int x = titleLabel.getX() + (leftToRight ? 0 : (titleLabel.getWidth() - iconWidth));
+		int y = titleLabel.getY() + ((titleLabel.getHeight() - iconHeight) / 2);
+		return new Rectangle( x, y, iconWidth, iconHeight );
+	}
+
 	/**
 	 * Does nothing because FlatLaf internal frames do not have system menus.
 	 */

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

@@ -22,10 +22,13 @@ import java.awt.Component;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
+import java.awt.Rectangle;
+import java.awt.event.MouseEvent;
 import javax.swing.JComponent;
 import javax.swing.JInternalFrame;
 import javax.swing.LookAndFeel;
 import javax.swing.UIManager;
+import javax.swing.event.MouseInputAdapter;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicInternalFrameUI;
 
@@ -122,6 +125,11 @@ public class FlatInternalFrameUI
 		return new FlatWindowResizer.InternalFrameResizer( frame, this::getDesktopManager );
 	}
 
+	@Override
+	protected MouseInputAdapter createBorderListener( JInternalFrame w ) {
+		return new FlatBorderListener();
+	}
+
 	//---- class FlatInternalFrameBorder --------------------------------------
 
 	public static class FlatInternalFrameBorder
@@ -195,4 +203,29 @@ public class FlatInternalFrameUI
 			}
 		}
 	}
+
+	//---- class FlatBorderListener -------------------------------------------
+
+	/**
+	 * @since 1.6
+	 */
+	protected class FlatBorderListener
+		extends BorderListener
+	{
+		@Override
+		public void mouseClicked( MouseEvent e ) {
+			if( e.getClickCount() == 2 && !frame.isIcon() &&
+				e.getSource() instanceof FlatInternalFrameTitlePane )
+			{
+				Rectangle iconBounds = ((FlatInternalFrameTitlePane)e.getSource()).getFrameIconBounds();
+				if( iconBounds != null && iconBounds.contains( e.getX(), e.getY() ) ) {
+					if( frame.isClosable() )
+						frame.doDefaultCloseAction();
+					return;
+				}
+			}
+
+			super.mouseClicked( e );
+		}
+	}
 }

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

@@ -20,10 +20,12 @@ import java.awt.Color;
 import java.awt.EventQueue;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
+import java.beans.PropertyChangeListener;
 import javax.swing.JComponent;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicListUI;
+import com.formdev.flatlaf.FlatClientProperties;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JList}.
@@ -95,6 +97,17 @@ public class FlatListUI
 		selectionInactiveForeground = null;
 	}
 
+	@Override
+	protected PropertyChangeListener createPropertyChangeListener() {
+		PropertyChangeListener superListener = super.createPropertyChangeListener();
+		return e -> {
+			superListener.propertyChange( e );
+
+			if( FlatClientProperties.COMPONENT_FOCUS_OWNER.equals( e.getPropertyName() ) )
+				toggleSelectionColors();
+		};
+	}
+
 	@Override
 	protected FocusListener createFocusListener() {
 		return new BasicListUI.FocusHandler() {

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

@@ -17,6 +17,7 @@
 package com.formdev.flatlaf.ui;
 
 import java.awt.Color;
+import java.awt.Container;
 import java.awt.Rectangle;
 import java.awt.Window;
 import java.beans.PropertyChangeListener;
@@ -24,7 +25,6 @@ import java.util.List;
 import javax.swing.JDialog;
 import javax.swing.JFrame;
 import javax.swing.JRootPane;
-import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.event.ChangeListener;
 import com.formdev.flatlaf.FlatClientProperties;
@@ -76,6 +76,11 @@ public class FlatNativeWindowBorder
 		if( !isSupported() )
 			return null;
 
+		// do nothing if root pane has a parent that is not a window (e.g. a JInternalFrame)
+		Container parent = rootPane.getParent();
+		if( parent != null && !(parent instanceof Window) )
+			return null;
+
 		// Check whether root pane already has a window, which is the case when
 		// switching from another LaF to FlatLaf.
 		// Also check whether the window is displayable, which is required to install
@@ -83,9 +88,8 @@ public class FlatNativeWindowBorder
 		// If the window is not displayable, then it was probably closed/disposed but not yet removed
 		// from the list of windows that AWT maintains and returns with Window.getWindows().
 		// It could be also be a window that is currently hidden, but may be shown later.
-		Window window = SwingUtilities.windowForComponent( rootPane );
-		if( window != null && window.isDisplayable() )
-			install( window );
+		if( parent instanceof Window && parent.isDisplayable() )
+			install( (Window) parent );
 
 		// Install FlatLaf native window border, which must be done late,
 		// when the native window is already created, because it needs access to the window.
@@ -125,6 +129,10 @@ public class FlatNativeWindowBorder
 			// enable native window border for window
 			setHasCustomDecoration( frame, true );
 
+			// avoid double window title bar if enabling native window border failed
+			if( !hasCustomDecoration( frame ) )
+				return;
+
 			// enable Swing window decoration
 			rootPane.setWindowDecorationStyle( JRootPane.FRAME );
 
@@ -143,6 +151,10 @@ public class FlatNativeWindowBorder
 			// enable native window border for window
 			setHasCustomDecoration( dialog, true );
 
+			// avoid double window title bar if enabling native window border failed
+			if( !hasCustomDecoration( dialog ) )
+				return;
+
 			// enable Swing window decoration
 			rootPane.setWindowDecorationStyle( JRootPane.PLAIN_DIALOG );
 		}
@@ -166,9 +178,9 @@ public class FlatNativeWindowBorder
 			return;
 
 		// uninstall native window border
-		Window window = SwingUtilities.windowForComponent( rootPane );
-		if( window != null )
-			uninstall( window );
+		Container parent = rootPane.getParent();
+		if( parent instanceof Window )
+			uninstall( (Window) parent );
 	}
 
 	private static void uninstall( Window window ) {

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

@@ -22,7 +22,11 @@ import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.GridBagConstraints;
 import java.awt.Insets;
+import javax.swing.Box;
+import javax.swing.BoxLayout;
+import javax.swing.Icon;
 import javax.swing.JComponent;
+import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.UIManager;
 import javax.swing.border.Border;
@@ -88,6 +92,7 @@ public class FlatOptionPaneUI
 	protected int messagePadding;
 	protected int maxCharactersPerLine;
 	private int focusWidth;
+	private boolean sameSizeButtons;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatOptionPaneUI();
@@ -101,6 +106,7 @@ public class FlatOptionPaneUI
 		messagePadding = UIManager.getInt( "OptionPane.messagePadding" );
 		maxCharactersPerLine = UIManager.getInt( "OptionPane.maxCharactersPerLine" );
 		focusWidth = UIManager.getInt( "Component.focusWidth" );
+		sameSizeButtons = FlatUIUtils.getUIBoolean( "OptionPane.sameSizeButtons", true );
 	}
 
 	@Override
@@ -157,15 +163,40 @@ public class FlatOptionPaneUI
 			cons.insets.bottom = UIScale.scale( messagePadding );
 
 		// disable line wrapping for HTML
-		if( msg instanceof String && BasicHTML.isHTMLString( (String) msg ) )
-			maxll = Integer.MAX_VALUE;
+		if( msg != null &&
+			!(msg instanceof Component) &&
+			!(msg instanceof Object[]) &&
+			!(msg instanceof Icon) )
+		{
+			msg = msg.toString();
+			if( BasicHTML.isHTMLString( (String) msg ) )
+				maxll = Integer.MAX_VALUE;
+		}
+
+		// fix right-to-left alignment if super.addMessageComponents() breaks longer lines
+		// into multiple labels and puts them into a box that aligns them to the left
+		if( msg instanceof Box ) {
+			Box box = (Box) msg;
+			if( "OptionPane.verticalBox".equals( box.getName() ) &&
+				box.getLayout() instanceof BoxLayout &&
+				((BoxLayout)box.getLayout()).getAxis() == BoxLayout.Y_AXIS )
+			{
+				box.addPropertyChangeListener( "componentOrientation", e -> {
+					float alignX = box.getComponentOrientation().isLeftToRight() ? 0 : 1;
+					for( Component c : box.getComponents() ) {
+						if( c instanceof JLabel && "OptionPane.label".equals( c.getName() ) )
+							((JLabel)c).setAlignmentX( alignX );
+					}
+				} );
+			}
+		}
 
 		super.addMessageComponents( container, cons, msg, maxll, internallyCreated );
 	}
 
 	private void updateChildPanels( Container c ) {
 		for( Component child : c.getComponents() ) {
-			if( child instanceof JPanel ) {
+			if( child.getClass() == JPanel.class ) {
 				JPanel panel = (JPanel)child;
 
 				// make sub-panel non-opaque for OptionPane.background
@@ -177,9 +208,8 @@ public class FlatOptionPaneUI
 					panel.setBorder( new NonUIResourceBorder( border ) );
 			}
 
-			if( child instanceof Container ) {
+			if( child instanceof Container )
 				updateChildPanels( (Container) child );
-			}
 		}
 	}
 
@@ -197,6 +227,11 @@ public class FlatOptionPaneUI
 		return null;
 	}
 
+	@Override
+	protected boolean getSizeButtonsToSameWidth() {
+		return sameSizeButtons;
+	}
+
 	//---- class NonUIResourceBorder ------------------------------------------
 
 	private static class NonUIResourceBorder

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

@@ -16,30 +16,31 @@
 
 package com.formdev.flatlaf.ui;
 
-import java.awt.Color;
-import java.awt.Dimension;
 import java.awt.Graphics;
-import java.awt.Graphics2D;
+import java.awt.Insets;
+import java.awt.Shape;
 import java.awt.Toolkit;
-import java.awt.event.FocusListener;
 import java.awt.event.KeyAdapter;
 import java.awt.event.KeyEvent;
 import java.awt.event.KeyListener;
-import java.beans.PropertyChangeEvent;
+import javax.swing.Action;
+import javax.swing.ActionMap;
 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.BasicPasswordFieldUI;
-import javax.swing.text.Caret;
+import javax.swing.text.DefaultEditorKit;
+import javax.swing.text.Element;
 import javax.swing.text.JTextComponent;
-import com.formdev.flatlaf.util.HiDPIUtils;
+import javax.swing.text.PasswordView;
+import javax.swing.text.View;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JPasswordField}.
  *
- * <!-- BasicPasswordFieldUI -->
+ * <!-- BasicTextFieldUI -->
  *
  * @uiDefault PasswordField.font					Font
  * @uiDefault PasswordField.background				Color
@@ -52,68 +53,67 @@ import com.formdev.flatlaf.util.HiDPIUtils;
  * @uiDefault PasswordField.inactiveForeground		Color	used if not enabled (yes, this is confusing; this should be named disabledForeground)
  * @uiDefault PasswordField.border					Border
  * @uiDefault PasswordField.margin					Insets
- * @uiDefault PasswordField.echoChar				character
  * @uiDefault PasswordField.caretBlinkRate			int		default is 500 milliseconds
  *
- * <!-- FlatPasswordFieldUI -->
+ * <!-- FlatTextFieldUI -->
  *
  * @uiDefault Component.minimumWidth				int
  * @uiDefault Component.isIntelliJTheme				boolean
  * @uiDefault PasswordField.placeholderForeground	Color
- * @uiDefault PasswordField.showCapsLock			boolean
- * @uiDefault PasswordField.capsLockIcon			Icon
+ * @uiDefault PasswordField.focusedBackground		Color	optional
  * @uiDefault TextComponent.selectAllOnFocusPolicy	String	never, once (default) or always
  * @uiDefault TextComponent.selectAllOnMouseClick	boolean
  *
+ * <!-- FlatPasswordFieldUI -->
+ *
+ * @uiDefault PasswordField.echoChar				character
+ * @uiDefault PasswordField.showCapsLock			boolean
+ * @uiDefault PasswordField.capsLockIcon			Icon
+ *
  * @author Karl Tauber
  */
 public class FlatPasswordFieldUI
-	extends BasicPasswordFieldUI
+	extends FlatTextFieldUI
 {
-	protected int minimumWidth;
-	protected boolean isIntelliJTheme;
-	protected Color placeholderForeground;
 	protected boolean showCapsLock;
 	protected Icon capsLockIcon;
 
-	private FocusListener focusListener;
 	private KeyListener capsLockListener;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatPasswordFieldUI();
 	}
 
+	@Override
+	protected String getPropertyPrefix() {
+		return "PasswordField";
+	}
+
 	@Override
 	protected void installDefaults() {
 		super.installDefaults();
 
 		String prefix = getPropertyPrefix();
-		minimumWidth = UIManager.getInt( "Component.minimumWidth" );
-		isIntelliJTheme = UIManager.getBoolean( "Component.isIntelliJTheme" );
-		placeholderForeground = UIManager.getColor( prefix + ".placeholderForeground" );
+		Character echoChar = (Character) UIManager.get( prefix + ".echoChar" );
+		if( echoChar != null )
+			LookAndFeel.installProperty( getComponent(), "echoChar", echoChar );
+
 		showCapsLock = UIManager.getBoolean( "PasswordField.showCapsLock" );
 		capsLockIcon = UIManager.getIcon( "PasswordField.capsLockIcon" );
-
-		LookAndFeel.installProperty( getComponent(), "opaque", false );
-
-		MigLayoutVisualPadding.install( getComponent() );
 	}
 
 	@Override
 	protected void uninstallDefaults() {
 		super.uninstallDefaults();
 
-		placeholderForeground = null;
 		capsLockIcon = null;
-
-		MigLayoutVisualPadding.uninstall( getComponent() );
 	}
 
 	@Override
 	protected void installListeners() {
 		super.installListeners();
 
-		focusListener = new FlatUIUtils.RepaintFocusListener( getComponent() );
+		// update caps lock indicator
 		capsLockListener = new KeyAdapter() {
 			@Override
 			public void keyPressed( KeyEvent e ) {
@@ -124,12 +124,13 @@ public class FlatPasswordFieldUI
 				repaint( e );
 			}
 			private void repaint( KeyEvent e ) {
-				if( e.getKeyCode() == KeyEvent.VK_CAPS_LOCK )
+				if( e.getKeyCode() == KeyEvent.VK_CAPS_LOCK ) {
 					e.getComponent().repaint();
+					scrollCaretToVisible();
+				}
 			}
 		};
 
-		getComponent().addFocusListener( focusListener );
 		getComponent().addKeyListener( capsLockListener );
 	}
 
@@ -137,59 +138,74 @@ public class FlatPasswordFieldUI
 	protected void uninstallListeners() {
 		super.uninstallListeners();
 
-		getComponent().removeFocusListener( focusListener );
 		getComponent().removeKeyListener( capsLockListener );
-		focusListener = null;
 		capsLockListener = null;
 	}
 
 	@Override
-	protected Caret createCaret() {
-		return new FlatCaret( UIManager.getString( "TextComponent.selectAllOnFocusPolicy" ),
-			UIManager.getBoolean( "TextComponent.selectAllOnMouseClick" ) );
+	protected void installKeyboardActions() {
+		super.installKeyboardActions();
+
+		// map "select-word" action (double-click) to "select-line" action
+		ActionMap map = SwingUtilities.getUIActionMap( getComponent() );
+		if( map != null && map.get( DefaultEditorKit.selectWordAction ) != null ) {
+			Action selectLineAction = map.get( DefaultEditorKit.selectLineAction );
+			if( selectLineAction != null )
+				map.put( DefaultEditorKit.selectWordAction, selectLineAction );
+		}
 	}
 
 	@Override
-	protected void propertyChange( PropertyChangeEvent e ) {
-		super.propertyChange( e );
-		FlatTextFieldUI.propertyChange( getComponent(), e );
+	public View create( Element elem ) {
+		return new PasswordView( elem );
 	}
 
 	@Override
 	protected void paintSafely( Graphics g ) {
-		FlatTextFieldUI.paintBackground( g, getComponent(), isIntelliJTheme );
-		FlatTextFieldUI.paintPlaceholder( g, getComponent(), placeholderForeground );
-		paintCapsLock( g );
+		// safe and restore clipping area because super.paintSafely() modifies it
+		// and the caps lock icon would be truncated
+		Shape oldClip = g.getClip();
+		super.paintSafely( g );
+		g.setClip( oldClip );
 
-		super.paintSafely( HiDPIUtils.createGraphicsTextYCorrection( (Graphics2D) g ) );
+		paintCapsLock( g );
 	}
 
 	protected void paintCapsLock( Graphics g ) {
-		if( !showCapsLock )
+		if( !isCapsLockVisible() )
 			return;
 
 		JTextComponent c = getComponent();
-		if( !FlatUIUtils.isPermanentFocusOwner( c ) ||
-			!Toolkit.getDefaultToolkit().getLockingKeyState( KeyEvent.VK_CAPS_LOCK ) )
-		  return;
-
 		int y = (c.getHeight() - capsLockIcon.getIconHeight()) / 2;
-		int x = c.getWidth() - capsLockIcon.getIconWidth() - y;
+		int x = c.getComponentOrientation().isLeftToRight()
+			? c.getWidth() - capsLockIcon.getIconWidth() - y
+			: y;
 		capsLockIcon.paintIcon( c, g, x, y );
 	}
 
-	@Override
-	protected void paintBackground( Graphics g ) {
-		// background is painted elsewhere
+	/**
+	 * @since 1.4
+	 */
+	protected boolean isCapsLockVisible() {
+		if( !showCapsLock )
+			return false;
+
+		JTextComponent c = getComponent();
+		return FlatUIUtils.isPermanentFocusOwner( c ) &&
+			Toolkit.getDefaultToolkit().getLockingKeyState( KeyEvent.VK_CAPS_LOCK );
 	}
 
+	/**
+	 * @since 1.4
+	 */
 	@Override
-	public Dimension getPreferredSize( JComponent c ) {
-		return FlatTextFieldUI.applyMinimumWidth( c, super.getPreferredSize( c ), minimumWidth );
-	}
+	protected Insets getPadding() {
+		Insets padding = super.getPadding();
+		if( !isCapsLockVisible() )
+			return padding;
 
-	@Override
-	public Dimension getMinimumSize( JComponent c ) {
-		return FlatTextFieldUI.applyMinimumWidth( c, super.getMinimumSize( c ), minimumWidth );
+		boolean ltr = getComponent().getComponentOrientation().isLeftToRight();
+		int iconWidth = capsLockIcon.getIconWidth();
+		return FlatUIUtils.addInsets( padding, new Insets( 0, ltr ? 0 : iconWidth, 0, ltr ? iconWidth : 0 ) );
 	}
 }

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

@@ -20,11 +20,16 @@ import java.awt.Color;
 import java.awt.Component;
 import java.awt.Container;
 import java.awt.Dimension;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsDevice;
+import java.awt.GraphicsEnvironment;
 import java.awt.Insets;
 import java.awt.MouseInfo;
 import java.awt.Panel;
 import java.awt.Point;
+import java.awt.PointerInfo;
 import java.awt.Rectangle;
+import java.awt.Toolkit;
 import java.awt.Window;
 import java.awt.event.ComponentEvent;
 import java.awt.event.ComponentListener;
@@ -39,6 +44,7 @@ import javax.swing.Popup;
 import javax.swing.PopupFactory;
 import javax.swing.RootPaneContainer;
 import javax.swing.SwingUtilities;
+import javax.swing.ToolTipManager;
 import javax.swing.UIManager;
 import javax.swing.border.Border;
 import com.formdev.flatlaf.FlatClientProperties;
@@ -62,7 +68,7 @@ public class FlatPopupFactory
 	public Popup getPopup( Component owner, Component contents, int x, int y )
 		throws IllegalArgumentException
 	{
-		Point pt = fixToolTipLocation( contents, x, y );
+		Point pt = fixToolTipLocation( owner, contents, x, y );
 		if( pt != null ) {
 			x = pt.x;
 			y = pt.y;
@@ -115,6 +121,10 @@ public class FlatPopupFactory
 				popupWindow.getGraphicsConfiguration() == owner.getGraphicsConfiguration() )
 			  return popup;
 
+			// avoid endless loop (should newer happen; PopupFactory cache size is 5)
+			if( ++count > 10 )
+				return popup;
+
 			// remove contents component from popup window
 			if( popupWindow instanceof JWindow )
 				((JWindow)popupWindow).getContentPane().removeAll();
@@ -122,10 +132,6 @@ public class FlatPopupFactory
 			// dispose unused popup
 			// (do not invoke popup.hide() because this would cache the popup window)
 			popupWindow.dispose();
-
-			// avoid endless loop (should newer happen; PopupFactory cache size is 5)
-			if( ++count > 10 )
-				return popup;
 		}
 	}
 
@@ -206,17 +212,21 @@ public class FlatPopupFactory
 	/**
 	 * Usually ToolTipManager places a tooltip at (mouseLocation.x, mouseLocation.y + 20).
 	 * In case that the tooltip would be partly outside of the screen,
-	 * ToolTipManagerthe changes the location so that the entire tooltip fits on screen.
+	 * the ToolTipManager changes the location so that the entire tooltip fits on screen.
 	 * But this can place the tooltip under the mouse location and hide the owner component.
 	 * <p>
 	 * This method checks whether the current mouse location is within tooltip bounds
 	 * and corrects the y-location so that the tooltip is placed above the mouse location.
 	 */
-	private Point fixToolTipLocation( Component contents, int x, int y ) {
+	private Point fixToolTipLocation( Component owner, Component contents, int x, int y ) {
 		if( !(contents instanceof JToolTip) || !wasInvokedFromToolTipManager() )
 			return null;
 
-		Point mouseLocation = MouseInfo.getPointerInfo().getLocation();
+		PointerInfo pointerInfo = MouseInfo.getPointerInfo();
+		if( pointerInfo == null )
+			return null;
+
+		Point mouseLocation = pointerInfo.getLocation();
 		Dimension tipSize = contents.getPreferredSize();
 
 		// check whether mouse location is within tooltip bounds
@@ -224,18 +234,34 @@ public class FlatPopupFactory
 		if( !tipBounds.contains( mouseLocation ) )
 			return null;
 
-		// place tooltip above mouse location
-		return new Point( x, mouseLocation.y - tipSize.height - UIScale.scale( 20 ) );
+		// find GraphicsConfiguration at mouse location (similar to ToolTipManager.getDrawingGC())
+		GraphicsConfiguration gc = null;
+		for( GraphicsDevice device : GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices() ) {
+			GraphicsConfiguration dgc = device.getDefaultConfiguration();
+			if( dgc.getBounds().contains( mouseLocation ) ) {
+				gc = dgc;
+				break;
+			}
+		}
+		if( gc == null )
+			gc = owner.getGraphicsConfiguration();
+		if( gc == null )
+			return null;
+
+		Rectangle screenBounds = gc.getBounds();
+		Insets screenInsets = Toolkit.getDefaultToolkit().getScreenInsets( gc );
+		int screenTop = screenBounds.y + screenInsets.top;
+
+		// place tooltip above mouse location if there is enough space
+		int newY =  mouseLocation.y - tipSize.height - UIScale.scale( 20 );
+		if( newY < screenTop )
+			return null;
+
+		return new Point( x, newY );
 	}
 
 	private boolean wasInvokedFromToolTipManager() {
-		StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
-		for( StackTraceElement stackTraceElement : stackTrace ) {
-			if( "javax.swing.ToolTipManager".equals( stackTraceElement.getClassName() ) &&
-				"showTipWindow".equals( stackTraceElement.getMethodName() ) )
-			  return true;
-		}
-		return false;
+		return StackUtils.wasInvokedFrom( ToolTipManager.class.getName(), "showTipWindow", 8 );
 	}
 
 	//---- class NonFlashingPopup ---------------------------------------------
@@ -463,6 +489,9 @@ public class FlatPopupFactory
 			JLayeredPane layeredPane = ((RootPaneContainer)window).getLayeredPane();
 			layeredPane.add( dropShadowPanel, JLayeredPane.POPUP_LAYER, 0 );
 
+			moveMediumWeightDropShadow();
+			resizeMediumWeightDropShadow();
+
 			mediumPanelListener = new ComponentListener() {
 				@Override
 				public void componentShown( ComponentEvent e ) {
@@ -478,17 +507,12 @@ public class FlatPopupFactory
 
 				@Override
 				public void componentMoved( ComponentEvent e ) {
-					if( dropShadowPanel != null && mediumWeightPanel != null ) {
-						Point location = mediumWeightPanel.getLocation();
-						Insets insets = dropShadowPanel.getInsets();
-						dropShadowPanel.setLocation( location.x - insets.left, location.y - insets.top );
-					}
+					moveMediumWeightDropShadow();
 				}
 
 				@Override
 				public void componentResized( ComponentEvent e ) {
-					if( dropShadowPanel != null )
-						dropShadowPanel.setSize( FlatUIUtils.addInsets( mediumWeightPanel.getSize(), dropShadowPanel.getInsets() ) );
+					resizeMediumWeightDropShadow();
 				}
 			};
 			mediumWeightPanel.addComponentListener( mediumPanelListener );
@@ -504,5 +528,18 @@ public class FlatPopupFactory
 				parent.repaint( bounds.x, bounds.y, bounds.width, bounds.height );
 			}
 		}
+
+		private void moveMediumWeightDropShadow() {
+			if( dropShadowPanel != null && mediumWeightPanel != null ) {
+				Point location = mediumWeightPanel.getLocation();
+				Insets insets = dropShadowPanel.getInsets();
+				dropShadowPanel.setLocation( location.x - insets.left, location.y - insets.top );
+			}
+		}
+
+		private void resizeMediumWeightDropShadow() {
+			if( dropShadowPanel != null && mediumWeightPanel != null )
+				dropShadowPanel.setSize( FlatUIUtils.addInsets( mediumWeightPanel.getSize(), dropShadowPanel.getInsets() ) );
+		}
 	}
 }

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

@@ -24,8 +24,8 @@ import javax.swing.plaf.ComponentUI;
  *
  * <!-- BasicSeparatorUI -->
  *
- * @uiDefault PopupMenuSeparator.background		Color	unused
- * @uiDefault PopupMenuSeparator.foreground		Color
+ * @uiDefault Separator.background				Color	unused
+ * @uiDefault Separator.foreground				Color
  *
  * <!-- FlatSeparatorUI -->
  *

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

@@ -18,11 +18,14 @@ package com.formdev.flatlaf.ui;
 
 import static com.formdev.flatlaf.util.UIScale.scale;
 import java.awt.Color;
+import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Insets;
 import java.awt.Rectangle;
+import java.util.Objects;
 import javax.swing.AbstractButton;
+import javax.swing.CellRendererPane;
 import javax.swing.JComponent;
 import javax.swing.LookAndFeel;
 import javax.swing.UIManager;
@@ -120,10 +123,11 @@ public class FlatRadioButtonUI
 	public void paint( Graphics g, JComponent c ) {
 		// fill background even if not opaque if
 		// - contentAreaFilled is true and
-		// - if background was explicitly set to a non-UIResource color
+		// - if background color is different to default background color
+		// (this paints selection if using the component as cell renderer)
 		if( !c.isOpaque() &&
 			((AbstractButton)c).isContentAreaFilled() &&
-			!defaultBackground.equals( c.getBackground() ) )
+			!Objects.equals( c.getBackground(), getDefaultBackground( c ) ) )
 		{
 			g.setColor( c.getBackground() );
 			g.fillRect( 0, 0, c.getWidth(), c.getHeight() );
@@ -160,6 +164,18 @@ public class FlatRadioButtonUI
 		FlatButtonUI.paintText( g, b, textRect, text, b.isEnabled() ? b.getForeground() : disabledText );
 	}
 
+	/**
+	 * Returns the default background color of the component.
+	 * If the component is used as cell renderer (e.g. in JTable),
+	 * then the background color of the renderer container is returned.
+	 */
+	private Color getDefaultBackground( JComponent c ) {
+		Container parent = c.getParent();
+		return (parent instanceof CellRendererPane && parent.getParent() != null)
+			? parent.getParent().getBackground()
+			: defaultBackground;
+	}
+
 	private int getIconFocusWidth( JComponent c ) {
 		AbstractButton b = (AbstractButton) c;
 		return (b.getIcon() == null && getDefaultIcon() instanceof FlatCheckBoxIcon)

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

@@ -27,7 +27,11 @@ import java.awt.Insets;
 import java.awt.LayoutManager;
 import java.awt.LayoutManager2;
 import java.awt.Window;
+import java.awt.event.ComponentAdapter;
+import java.awt.event.ComponentEvent;
+import java.awt.event.ComponentListener;
 import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
 import java.util.function.Function;
 import javax.swing.JComponent;
 import javax.swing.JDialog;
@@ -36,6 +40,7 @@ import javax.swing.JLayeredPane;
 import javax.swing.JMenuBar;
 import javax.swing.JRootPane;
 import javax.swing.LookAndFeel;
+import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.border.Border;
 import javax.swing.plaf.BorderUIResource;
@@ -79,6 +84,8 @@ public class FlatRootPaneUI
 
 	private Object nativeWindowBorderData;
 	private LayoutManager oldLayout;
+	private PropertyChangeListener ancestorListener;
+	private ComponentListener componentListener;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatRootPaneUI();
@@ -136,6 +143,61 @@ public class FlatRootPaneUI
 			c.putClientProperty( "jetbrains.awt.windowDarkAppearance", FlatLaf.isLafDark() );
 	}
 
+	@Override
+	protected void installListeners( JRootPane root ) {
+		super.installListeners( root );
+
+		if( SystemInfo.isJava_9_orLater ) {
+			// On HiDPI screens, where scaling is used, there may be white lines at the
+			// bottom and at the right side of the window when it is initially shown.
+			// This is very disturbing in dark themes, but hard to notice in light themes.
+			// Seems to be a rounding issue when Swing adds dirty region of window
+			// using RepaintManager.nativeAddDirtyRegion().
+			//
+			// Note: Not using a HierarchyListener here, which would be much easier,
+			// because this causes problems with mouse clicks in heavy-weight popups.
+			// Instead, add a listener to the root pane that waits until it is added
+			// to a window, then add a component listener to the window.
+			// See: https://github.com/JFormDesigner/FlatLaf/issues/371
+			ancestorListener = e -> {
+				Object oldValue = e.getOldValue();
+				Object newValue = e.getNewValue();
+				if( newValue instanceof Window ) {
+					if( componentListener == null ) {
+						componentListener = new ComponentAdapter() {
+							@Override
+							public void componentShown( ComponentEvent e ) {
+								// add whole root pane to dirty regions when window is initially shown
+								root.getParent().repaint( root.getX(), root.getY(), root.getWidth(), root.getHeight() );
+							}
+						};
+					}
+					((Window)newValue).addComponentListener( componentListener );
+				} else if( newValue == null && oldValue instanceof Window ) {
+					if( componentListener != null )
+						((Window)oldValue).removeComponentListener( componentListener );
+				}
+			};
+			root.addPropertyChangeListener( "ancestor", ancestorListener );
+		}
+	}
+
+	@Override
+	protected void uninstallListeners( JRootPane root ) {
+		super.uninstallListeners( root );
+
+		if( SystemInfo.isJava_9_orLater ) {
+			if( componentListener != null ) {
+				Window window = SwingUtilities.windowForComponent( root );
+				if( window != null )
+					window.removeComponentListener( componentListener );
+				componentListener = null;
+			}
+			root.removePropertyChangeListener( "ancestor", ancestorListener );
+			ancestorListener = null;
+		}
+	}
+
 	/**
 	 * @since 1.1.2
 	 */
@@ -306,7 +368,7 @@ public class FlatRootPaneUI
 				? getSizeFunc.apply( rootPane.getContentPane() )
 				: rootPane.getSize();
 
-			int width = Math.max( titlePaneSize.width, contentSize.width );
+			int width = contentSize.width; // title pane width is not considered here
 			int height = titlePaneSize.height + contentSize.height;
 			if( titlePane == null || !titlePane.isMenuBarEmbedded() ) {
 				JMenuBar menuBar = rootPane.getJMenuBar();

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

@@ -19,6 +19,7 @@ package com.formdev.flatlaf.ui;
 import java.awt.Component;
 import java.awt.Graphics;
 import java.awt.Insets;
+import java.awt.KeyboardFocusManager;
 import java.awt.Rectangle;
 import java.awt.event.ContainerEvent;
 import java.awt.event.ContainerListener;
@@ -34,11 +35,13 @@ import javax.swing.JComponent;
 import javax.swing.JScrollBar;
 import javax.swing.JScrollPane;
 import javax.swing.JTable;
+import javax.swing.JTree;
 import javax.swing.JViewport;
 import javax.swing.LookAndFeel;
 import javax.swing.ScrollPaneConstants;
 import javax.swing.Scrollable;
 import javax.swing.SwingConstants;
+import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicScrollPaneUI;
@@ -329,6 +332,31 @@ public class FlatScrollPaneUI
 		paint( g, c );
 	}
 
+	/**
+	 * @since 1.3
+	 */
+	public static boolean isPermanentFocusOwner( JScrollPane scrollPane ) {
+		JViewport viewport = scrollPane.getViewport();
+		Component view = (viewport != null) ? viewport.getView() : null;
+		if( view == null )
+			return false;
+
+		// check whether view is focus owner
+		if( FlatUIUtils.isPermanentFocusOwner( view ) )
+			return true;
+
+		// check whether editor component in JTable or JTree is focus owner
+		if( (view instanceof JTable && ((JTable)view).isEditing()) ||
+			(view instanceof JTree && ((JTree)view).isEditing()) )
+		{
+			Component focusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
+			if( focusOwner != null )
+				return SwingUtilities.isDescendingFrom( focusOwner, view );
+		}
+
+		return false;
+	}
+
 	//---- class Handler ------------------------------------------------------
 
 	/**
@@ -350,11 +378,13 @@ public class FlatScrollPaneUI
 
 		@Override
 		public void focusGained( FocusEvent e ) {
+			// necessary to update focus border
 			scrollpane.repaint();
 		}
 
 		@Override
 		public void focusLost( FocusEvent e ) {
+			// necessary to update focus border
 			scrollpane.repaint();
 		}
 	}

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

@@ -18,9 +18,11 @@ package com.formdev.flatlaf.ui;
 
 import java.awt.Color;
 import java.awt.Dimension;
+import java.awt.Font;
 import java.awt.FontMetrics;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
+import java.awt.Insets;
 import java.awt.Rectangle;
 import java.awt.Shape;
 import java.awt.event.MouseEvent;
@@ -176,9 +178,27 @@ public class FlatSliderUI
 		if( slider.getOrientation() == JSlider.VERTICAL )
 			return -1;
 
+		// use default font (instead of slider font) because the slider font size
+		// may be different to label font size, but we want align the track/thumb with labels
+		Font font = UIManager.getFont( "defaultFont" );
+		if( font == null )
+			font = slider.getFont();
+		FontMetrics fm = slider.getFontMetrics( font );
+
+		// calculate track y coordinate and height
+		// (not using field trackRect here because slider size may be [0,0]
+		// and field trackRect may have invalid values in this case)
+		Insets insets = slider.getInsets();
+		int thumbHeight = getThumbSize().height;
+		int contentHeight = height - insets.top - insets.bottom - focusInsets.top - focusInsets.bottom;
+		int centerSpacing = thumbHeight
+			+ (slider.getPaintTicks() ? getTickLength() : 0)
+			+ (slider.getPaintLabels() ? getHeightOfTallestLabel() : 0);
+		int trackY = insets.top + focusInsets.top + (contentHeight - centerSpacing - 1) / 2;
+		int trackHeight = thumbHeight;
+
 		// compute a baseline so that the track is vertically centered
-		FontMetrics fm = slider.getFontMetrics( slider.getFont() );
-		return trackRect.y + Math.round( (trackRect.height - fm.getHeight()) / 2f ) + fm.getAscent() - 1;
+		return trackY + Math.round( (trackHeight - fm.getHeight()) / 2f ) + fm.getAscent() - 1;
 	}
 
 	@Override

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

@@ -21,6 +21,7 @@ import java.awt.Color;
 import java.awt.Component;
 import java.awt.Container;
 import java.awt.Dimension;
+import java.awt.FontMetrics;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
@@ -39,6 +40,7 @@ import javax.swing.LookAndFeel;
 import javax.swing.SwingConstants;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicSpinnerUI;
 import com.formdev.flatlaf.FlatClientProperties;
 
@@ -65,6 +67,7 @@ import com.formdev.flatlaf.FlatClientProperties;
  * @uiDefault Component.disabledBorderColor		Color
  * @uiDefault Spinner.disabledBackground		Color
  * @uiDefault Spinner.disabledForeground		Color
+ * @uiDefault Spinner.focusedBackground			Color	optional
  * @uiDefault Spinner.buttonBackground			Color
  * @uiDefault Spinner.buttonArrowColor			Color
  * @uiDefault Spinner.buttonDisabledArrowColor	Color
@@ -87,6 +90,7 @@ public class FlatSpinnerUI
 	protected Color disabledBorderColor;
 	protected Color disabledBackground;
 	protected Color disabledForeground;
+	protected Color focusedBackground;
 	protected Color buttonBackground;
 	protected Color buttonArrowColor;
 	protected Color buttonDisabledArrowColor;
@@ -112,6 +116,7 @@ public class FlatSpinnerUI
 		disabledBorderColor = UIManager.getColor( "Component.disabledBorderColor" );
 		disabledBackground = UIManager.getColor( "Spinner.disabledBackground" );
 		disabledForeground = UIManager.getColor( "Spinner.disabledForeground" );
+		focusedBackground = UIManager.getColor( "Spinner.focusedBackground" );
 		buttonBackground = UIManager.getColor( "Spinner.buttonBackground" );
 		buttonArrowColor = UIManager.getColor( "Spinner.buttonArrowColor" );
 		buttonDisabledArrowColor = UIManager.getColor( "Spinner.buttonDisabledArrowColor" );
@@ -119,9 +124,6 @@ public class FlatSpinnerUI
 		buttonPressedArrowColor = UIManager.getColor( "Spinner.buttonPressedArrowColor" );
 		padding = UIManager.getInsets( "Spinner.padding" );
 
-		// scale
-		padding = scale( padding );
-
 		MigLayoutVisualPadding.install( spinner );
 	}
 
@@ -133,6 +135,7 @@ public class FlatSpinnerUI
 		disabledBorderColor = null;
 		disabledBackground = null;
 		disabledForeground = null;
+		focusedBackground = null;
 		buttonBackground = null;
 		buttonArrowColor = null;
 		buttonDisabledArrowColor = null;
@@ -172,14 +175,7 @@ public class FlatSpinnerUI
 	@Override
 	protected JComponent createEditor() {
 		JComponent editor = super.createEditor();
-
-		// explicitly make non-opaque
-		editor.setOpaque( false );
-		JTextField textField = getEditorTextField( editor );
-		if( textField != null )
-			textField.setOpaque( false );
-
-		updateEditorColors();
+		configureEditor( editor );
 		return editor;
 	}
 
@@ -187,8 +183,21 @@ public class FlatSpinnerUI
 	protected void replaceEditor( JComponent oldEditor, JComponent newEditor ) {
 		super.replaceEditor( oldEditor, newEditor );
 
+		configureEditor( newEditor );
+
 		removeEditorFocusListener( oldEditor );
 		addEditorFocusListener( newEditor );
+	}
+
+	/** @since 1.6 */
+	protected void configureEditor( JComponent editor ) {
+		// explicitly make non-opaque
+		editor.setOpaque( false );
+		JTextField textField = getEditorTextField( editor );
+		if( textField != null )
+			textField.setOpaque( false );
+
+		updateEditorPadding();
 		updateEditorColors();
 	}
 
@@ -204,6 +213,12 @@ public class FlatSpinnerUI
 			textField.removeFocusListener( getHandler() );
 	}
 
+	private void updateEditorPadding() {
+		JTextField textField = getEditorTextField( spinner.getEditor() );
+		if( textField != null )
+			textField.putClientProperty( FlatClientProperties.TEXT_FIELD_PADDING, padding );
+	}
+
 	private void updateEditorColors() {
 		JTextField textField = getEditorTextField( spinner.getEditor() );
 		if( textField != null ) {
@@ -221,10 +236,34 @@ public class FlatSpinnerUI
 			: null;
 	}
 
+	/**
+	 * @since 1.3
+	 */
+	public static boolean isPermanentFocusOwner( JSpinner spinner ) {
+		if( FlatUIUtils.isPermanentFocusOwner( spinner ) )
+			return true;
+
+		JTextField textField = getEditorTextField( spinner.getEditor() );
+		return (textField != null)
+			? FlatUIUtils.isPermanentFocusOwner( textField )
+			: false;
+	}
+
 	protected Color getBackground( boolean enabled ) {
-		return enabled
-			? spinner.getBackground()
-			: (isIntelliJTheme ? FlatUIUtils.getParentBackground( spinner ) : disabledBackground);
+		if( enabled ) {
+			Color background = spinner.getBackground();
+
+			// always use explicitly set color
+			if( !(background instanceof UIResource) )
+				return background;
+
+			// focused
+			if( focusedBackground != null && isPermanentFocusOwner( spinner ) )
+				return focusedBackground;
+
+			return background;
+		} else
+			return isIntelliJTheme ? FlatUIUtils.getParentBackground( spinner ) : disabledBackground;
 	}
 
 	protected Color getForeground( boolean enabled ) {
@@ -250,7 +289,7 @@ public class FlatSpinnerUI
 		FlatArrowButton button = new FlatArrowButton( direction, arrowType, buttonArrowColor,
 			buttonDisabledArrowColor, buttonHoverArrowColor, null, buttonPressedArrowColor, null );
 		button.setName( name );
-		button.setYOffset( (direction == SwingConstants.NORTH) ? 1 : -1 );
+		button.setYOffset( (direction == SwingConstants.NORTH) ? 1.25f : -1.25f );
 		if( direction == SwingConstants.NORTH )
 			installNextButtonListeners( button );
 		else
@@ -344,6 +383,7 @@ public class FlatSpinnerUI
 		@Override
 		public Dimension preferredLayoutSize( Container parent ) {
 			Insets insets = parent.getInsets();
+			Insets padding = scale( FlatSpinnerUI.this.padding );
 			Dimension editorSize = (editor != null) ? editor.getPreferredSize() : new Dimension( 0, 0 );
 
 			// the arrows width is the same as the inner height so that the arrows area is square
@@ -368,15 +408,19 @@ public class FlatSpinnerUI
 
 			if( nextButton == null && previousButton == null ) {
 				if( editor != null )
-					editor.setBounds( FlatUIUtils.subtractInsets( r, padding ) );
+					editor.setBounds( r );
 				return;
 			}
 
 			Rectangle editorRect = new Rectangle( r );
 			Rectangle buttonsRect = new Rectangle( r );
 
+			// 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 );
+
 			// make button area square (if spinner has preferred height)
-			int buttonsWidth = parent.getPreferredSize().height - insets.top - insets.bottom;
+			int buttonsWidth = Math.min( parent.getPreferredSize().height - insets.top - insets.bottom, maxButtonWidth );
 			buttonsRect.width = buttonsWidth;
 
 			if( parent.getComponentOrientation().isLeftToRight() ) {
@@ -388,7 +432,7 @@ public class FlatSpinnerUI
 			}
 
 			if( editor != null )
-				editor.setBounds( FlatUIUtils.subtractInsets( editorRect, padding ) );
+				editor.setBounds( editorRect );
 
 			int nextHeight = (buttonsRect.height / 2) + (buttonsRect.height % 2); // round up
 			if( nextButton != null )
@@ -405,6 +449,7 @@ public class FlatSpinnerUI
 
 		@Override
 		public void focusGained( FocusEvent e ) {
+			// necessary to update focus border
 			spinner.repaint();
 
 			// if spinner gained focus, transfer it to the editor text field
@@ -417,6 +462,7 @@ public class FlatSpinnerUI
 
 		@Override
 		public void focusLost( FocusEvent e ) {
+			// necessary to update focus border
 			spinner.repaint();
 		}
 

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

@@ -58,6 +58,8 @@ import java.util.function.BiConsumer;
 import java.util.function.IntConsumer;
 import javax.accessibility.Accessible;
 import javax.accessibility.AccessibleContext;
+import javax.swing.Action;
+import javax.swing.ActionMap;
 import javax.swing.ButtonModel;
 import javax.swing.Icon;
 import javax.swing.JButton;
@@ -325,7 +327,7 @@ public class FlatTabbedPaneUI
 		// the default also includes Ctrl+TAB/Ctrl+Shift+TAB, which we need to switch tabs
 		if( focusForwardTraversalKeys == null ) {
 			focusForwardTraversalKeys = Collections.singleton( KeyStroke.getKeyStroke( KeyEvent.VK_TAB, 0 ) );
-			focusBackwardTraversalKeys = Collections.singleton( KeyStroke.getKeyStroke( KeyEvent.VK_TAB, InputEvent.SHIFT_MASK ) );
+			focusBackwardTraversalKeys = Collections.singleton( KeyStroke.getKeyStroke( KeyEvent.VK_TAB, InputEvent.SHIFT_DOWN_MASK ) );
 		}
 		// Ideally we should use `LookAndFeel.installProperty( tabPane, "focusTraversalKeysForward", keys )` here
 		// instead of `tabPane.setFocusTraversalKeys()`, but WindowsTabbedPaneUI also uses later method
@@ -490,6 +492,20 @@ public class FlatTabbedPaneUI
 		}
 	}
 
+	@Override
+	protected void installKeyboardActions() {
+		super.installKeyboardActions();
+
+		// get shared action map, used for all tabbed panes
+		ActionMap map = SwingUtilities.getUIActionMap( tabPane );
+		if( map != null ) {
+			// this is required for the case that those actions are used from outside
+			// (e.g. wheel tab scroller in NetBeans)
+			RunWithOriginalLayoutManagerDelegateAction.install( map, "scrollTabsForwardAction" );
+			RunWithOriginalLayoutManagerDelegateAction.install( map, "scrollTabsBackwardAction" );
+		}
+	}
+
 	private Handler getHandler() {
 		if( handler == null )
 			handler = new Handler();
@@ -826,6 +842,17 @@ public class FlatTabbedPaneUI
 			paintTabArea( g, tabPlacement, selectedIndex );
 	}
 
+	@Override
+	protected void paintTabArea( Graphics g, int tabPlacement, int selectedIndex ) {
+		// need to set rendering hints here too because this method is also invoked
+		// from BasicTabbedPaneUI.ScrollableTabPanel.paintComponent()
+		Object[] oldHints = FlatUIUtils.setRenderingHints( g );
+
+		super.paintTabArea( g, tabPlacement, selectedIndex );
+
+		FlatUIUtils.resetRenderingHints( g, oldHints );
+	}
+
 	@Override
 	protected void paintTab( Graphics g, int tabPlacement, Rectangle[] rects,
 		int tabIndex, Rectangle iconRect, Rectangle textRect )
@@ -2959,4 +2986,51 @@ public class FlatTabbedPaneUI
 			scrollBackwardButtonPrefSize = backwardButton.getPreferredSize();
 		}
 	}
+
+	//---- class RunWithOriginalLayoutManagerDelegateAction -------------------
+
+	private static class RunWithOriginalLayoutManagerDelegateAction
+		implements Action
+	{
+		private final Action delegate;
+
+		static void install( ActionMap map, String key ) {
+			Action oldAction = map.get( key );
+			if( oldAction == null || oldAction instanceof RunWithOriginalLayoutManagerDelegateAction )
+				return; // not found or already installed
+
+			map.put( key, new RunWithOriginalLayoutManagerDelegateAction( oldAction ) );
+		}
+
+		private RunWithOriginalLayoutManagerDelegateAction( Action delegate ) {
+			this.delegate = delegate;
+		}
+
+		@Override
+		public Object getValue( String key ) {
+			return delegate.getValue( key );
+		}
+
+		@Override
+		public boolean isEnabled() {
+			return delegate.isEnabled();
+		}
+
+		@Override public void putValue( String key, Object value ) {}
+		@Override public void setEnabled( boolean b ) {}
+		@Override public void addPropertyChangeListener( PropertyChangeListener listener ) {}
+		@Override public void removePropertyChangeListener( PropertyChangeListener listener ) {}
+
+		@Override
+		public void actionPerformed( ActionEvent e ) {
+			JTabbedPane tabbedPane = (JTabbedPane) e.getSource();
+			ComponentUI ui = tabbedPane.getUI();
+			if( ui instanceof FlatTabbedPaneUI ) {
+				((FlatTabbedPaneUI)ui).runWithOriginalLayoutManager( () -> {
+					delegate.actionPerformed( e );
+				} );
+			} else
+				delegate.actionPerformed( e );
+		}
+	}
 }

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

@@ -0,0 +1,137 @@
+/*
+ * Copyright 2021 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.Color;
+import java.awt.Component;
+import java.awt.Container;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.geom.Rectangle2D;
+import javax.swing.JScrollBar;
+import javax.swing.JScrollPane;
+import javax.swing.JViewport;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.table.JTableHeader;
+import javax.swing.table.TableColumn;
+import com.formdev.flatlaf.util.UIScale;
+
+/**
+ * Cell border for {@code sun.swing.table.DefaultTableCellHeaderRenderer}
+ * (used by {@link javax.swing.table.JTableHeader}).
+ * <p>
+ * Uses separate cell margins from UI defaults to allow easy customizing.
+ *
+ * @author Karl Tauber
+ * @since 1.2
+ */
+public class FlatTableHeaderBorder
+	extends FlatEmptyBorder
+{
+	protected Color separatorColor = UIManager.getColor( "TableHeader.separatorColor" );
+	protected Color bottomSeparatorColor = UIManager.getColor( "TableHeader.bottomSeparatorColor" );
+	/** @since 1.6 */ protected boolean showTrailingVerticalLine = UIManager.getBoolean( "TableHeader.showTrailingVerticalLine" );
+
+	public FlatTableHeaderBorder() {
+		super( UIManager.getInsets( "TableHeader.cellMargins" ) );
+	}
+
+	@Override
+	public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+		JTableHeader header = (JTableHeader) SwingUtilities.getAncestorOfClass( JTableHeader.class, c );
+		boolean leftToRight = (header != null ? header : c).getComponentOrientation().isLeftToRight();
+		boolean paintLeft = !leftToRight;
+		boolean paintRight = leftToRight;
+
+		if( header != null ) {
+			int hx = SwingUtilities.convertPoint( c, x, y, header ).x;
+			if( isDraggedColumn( header, hx ) )
+				paintLeft = paintRight = true;
+			else {
+				if( hx <= 0 && !leftToRight && hideTrailingVerticalLine( header ) )
+					paintLeft = false;
+				if( hx + width >= header.getWidth() && leftToRight && hideTrailingVerticalLine( header ) )
+					paintRight = false;
+			}
+		}
+
+		float lineWidth = UIScale.scale( 1f );
+
+		Graphics2D g2 = (Graphics2D) g.create();
+		try {
+			FlatUIUtils.setRenderingHints( g2 );
+
+			// paint column separator lines
+			g2.setColor( separatorColor );
+			if( paintLeft )
+				g2.fill( new Rectangle2D.Float( x, y, lineWidth, height - lineWidth ) );
+			if( paintRight )
+				g2.fill( new Rectangle2D.Float( x + width - lineWidth, y, lineWidth, height - lineWidth ) );
+
+			// paint bottom line
+			g2.setColor( bottomSeparatorColor );
+			g2.fill( new Rectangle2D.Float( x, y + height - lineWidth, width, lineWidth ) );
+		} finally {
+			g2.dispose();
+		}
+	}
+
+	protected boolean isDraggedColumn( JTableHeader header, int x ) {
+		TableColumn draggedColumn = header.getDraggedColumn();
+		if( draggedColumn == null )
+			return false;
+
+		int draggedDistance = header.getDraggedDistance();
+		if( draggedDistance == 0 )
+			return false;
+
+		int columnCount = header.getColumnModel().getColumnCount();
+		for( int i = 0; i < columnCount; i++ ) {
+			if( header.getHeaderRect( i ).x + draggedDistance == x )
+				return true;
+		}
+
+		return false;
+	}
+
+	protected boolean hideTrailingVerticalLine( JTableHeader header ) {
+		if( showTrailingVerticalLine )
+			return false;
+
+		// do not hide if table header is not a child of a scroll pane
+		Container viewport = header.getParent();
+		Container viewportParent = (viewport != null) ? viewport.getParent() : null;
+		if( !(viewportParent instanceof JScrollPane) )
+			return false;
+
+		// do not hide if table header is not the column header of the scroll pane
+		JScrollPane scrollPane = (JScrollPane) viewportParent;
+		JViewport columnHeader = scrollPane.getColumnHeader();
+		if( viewport != columnHeader )
+			return false;
+
+		// hide if vertical scroll bar is not shown
+		JScrollBar vsb = scrollPane.getVerticalScrollBar();
+		if( vsb == null || !vsb.isVisible() )
+			return true;
+
+		// if "ScrollPane.fillUpperCorner" is true, then javax.swing.ScrollPaneLayout
+		// extends the vertical scrollbar into the upper right/left corner
+		return vsb.getY() == viewport.getY();
+	}
+}

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

@@ -18,28 +18,27 @@ package com.formdev.flatlaf.ui;
 
 import java.awt.Color;
 import java.awt.Component;
-import java.awt.Container;
+import java.awt.Cursor;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
 import java.awt.Rectangle;
+import java.awt.event.MouseEvent;
 import java.awt.geom.Rectangle2D;
 import java.util.Objects;
 import javax.swing.Icon;
 import javax.swing.JComponent;
 import javax.swing.JLabel;
-import javax.swing.JScrollPane;
 import javax.swing.JTable;
-import javax.swing.ScrollPaneConstants;
 import javax.swing.SwingConstants;
 import javax.swing.UIManager;
 import javax.swing.border.Border;
+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.TableCellRenderer;
-import javax.swing.table.TableColumn;
 import javax.swing.table.TableColumnModel;
 import com.formdev.flatlaf.util.UIScale;
 
@@ -54,17 +53,22 @@ import com.formdev.flatlaf.util.UIScale;
  *
  * <!-- FlatTableHeaderUI -->
  *
- * @uiDefault TableHeader.separatorColor		Color
  * @uiDefault TableHeader.bottomSeparatorColor	Color
  * @uiDefault TableHeader.height				int
  * @uiDefault TableHeader.sortIconPosition		String	right (default), left, top or bottom
  *
+ * <!-- FlatTableHeaderBorder -->
+ *
+ * @uiDefault TableHeader.cellMargins			Insets
+ * @uiDefault TableHeader.separatorColor		Color
+ * @uiDefault TableHeader.bottomSeparatorColor	Color
+ * @uiDefault TableHeader.showTrailingVerticalLine	boolean
+ *
  * @author Karl Tauber
  */
 public class FlatTableHeaderUI
 	extends BasicTableHeaderUI
 {
-	protected Color separatorColor;
 	protected Color bottomSeparatorColor;
 	protected int height;
 	protected int sortIconPosition;
@@ -77,7 +81,6 @@ public class FlatTableHeaderUI
 	protected void installDefaults() {
 		super.installDefaults();
 
-		separatorColor = UIManager.getColor( "TableHeader.separatorColor" );
 		bottomSeparatorColor = UIManager.getColor( "TableHeader.bottomSeparatorColor" );
 		height = UIManager.getInt( "TableHeader.height" );
 		switch( Objects.toString( UIManager.getString( "TableHeader.sortIconPosition" ), "right" ) ) {
@@ -93,27 +96,49 @@ public class FlatTableHeaderUI
 	protected void uninstallDefaults() {
 		super.uninstallDefaults();
 
-		separatorColor = null;
 		bottomSeparatorColor = null;
 	}
 
+	@Override
+	protected MouseInputListener createMouseInputListener() {
+		return new FlatMouseInputHandler();
+	}
+
+	// overridden and made public to allow usage in custom renderers
+	@Override
+	public int getRolloverColumn() {
+		return super.getRolloverColumn();
+	}
+
 	@Override
 	public void paint( Graphics g, JComponent c ) {
-		if( header.getColumnModel().getColumnCount() <= 0 )
+		TableColumnModel columnModel = header.getColumnModel();
+		if( columnModel.getColumnCount() <= 0 )
 			return;
 
-		// do not paint borders if JTableHeader.setDefaultRenderer() was used
-		TableCellRenderer defaultRenderer = header.getDefaultRenderer();
-		boolean paintBorders = isSystemDefaultRenderer( defaultRenderer );
-		if( !paintBorders ) {
-			// check whether the renderer delegates to the system default renderer
-			Component rendererComponent = defaultRenderer.getTableCellRendererComponent(
-				header.getTable(), "", false, false, -1, 0 );
-			paintBorders = isSystemDefaultRenderer( rendererComponent );
-		}
+		// compute total width of all columns
+		int columnCount = columnModel.getColumnCount();
+		int totalWidth = 0;
+		for( int i = 0; i < columnCount; i++ )
+			totalWidth += columnModel.getColumn( i ).getWidth();
 
-		if( paintBorders )
-			paintColumnBorders( g, c );
+		if( totalWidth < header.getWidth() ) {
+			// do not paint bottom separator if JTableHeader.setDefaultRenderer() was used
+			TableCellRenderer defaultRenderer = header.getDefaultRenderer();
+			boolean paintBottomSeparator = isSystemDefaultRenderer( defaultRenderer );
+			if( !paintBottomSeparator && header.getTable() != null ) {
+				// check whether the renderer delegates to the system default renderer
+				Component rendererComponent = defaultRenderer.getTableCellRendererComponent(
+					header.getTable(), "", false, false, -1, 0 );
+				paintBottomSeparator = isSystemDefaultRenderer( rendererComponent );
+			}
+
+			if( paintBottomSeparator ) {
+				int w = c.getWidth() - totalWidth;
+				int x = header.getComponentOrientation().isLeftToRight() ? c.getWidth() - w : 0;
+				paintBottomSeparator( g, c, x, w );
+			}
+		}
 
 		// temporary use own default renderer if necessary
 		FlatTableCellHeaderRenderer sortIconRenderer = null;
@@ -130,9 +155,6 @@ public class FlatTableHeaderUI
 			sortIconRenderer.reset();
 			header.setDefaultRenderer( sortIconRenderer.delegate );
 		}
-
-		if( paintBorders )
-			paintDraggedColumnBorders( g, c );
 	}
 
 	private boolean isSystemDefaultRenderer( Object headerRenderer ) {
@@ -141,17 +163,8 @@ public class FlatTableHeaderUI
 			   rendererClassName.equals( "sun.swing.FilePane$AlignableTableHeaderRenderer" );
 	}
 
-	protected void paintColumnBorders( Graphics g, JComponent c ) {
-		int width = c.getWidth();
-		int height = c.getHeight();
+	protected void paintBottomSeparator( Graphics g, JComponent c, int x, int w ) {
 		float lineWidth = UIScale.scale( 1f );
-		float topLineIndent = lineWidth;
-		float bottomLineIndent = lineWidth * 3;
-		TableColumnModel columnModel = header.getColumnModel();
-		int columnCount = columnModel.getColumnCount();
-		int sepCount = columnCount;
-		if( hideLastVerticalLine() )
-			sepCount--;
 
 		Graphics2D g2 = (Graphics2D) g.create();
 		try {
@@ -159,78 +172,7 @@ public class FlatTableHeaderUI
 
 			// paint bottom line
 			g2.setColor( bottomSeparatorColor );
-			g2.fill( new Rectangle2D.Float( 0, height - lineWidth, width, lineWidth ) );
-
-			// paint column separator lines
-			g2.setColor( separatorColor );
-
-			float y = topLineIndent;
-			float h = height - bottomLineIndent;
-
-			if( header.getComponentOrientation().isLeftToRight() ) {
-				int x = 0;
-				for( int i = 0; i < sepCount; i++ ) {
-					x += columnModel.getColumn( i ).getWidth();
-					g2.fill( new Rectangle2D.Float( x - lineWidth, y, lineWidth, h ) );
-				}
-
-				// paint trailing separator (on right side)
-				if( !hideTrailingVerticalLine() )
-					g2.fill( new Rectangle2D.Float( header.getWidth() - lineWidth, y, lineWidth, h ) );
-			} else {
-				Rectangle cellRect = header.getHeaderRect( 0 );
-				int x = cellRect.x + cellRect.width;
-				for( int i = 0; i < sepCount; i++ ) {
-					x -= columnModel.getColumn( i ).getWidth();
-					g2.fill( new Rectangle2D.Float( x - (i < sepCount - 1 ? lineWidth : 0), y, lineWidth, h ) );
-				}
-
-				// paint trailing separator (on left side)
-				if( !hideTrailingVerticalLine() )
-					g2.fill( new Rectangle2D.Float( 0, y, lineWidth, h ) );
-			}
-		} finally {
-			g2.dispose();
-		}
-	}
-
-	private void paintDraggedColumnBorders( Graphics g, JComponent c ) {
-		TableColumn draggedColumn = header.getDraggedColumn();
-		if( draggedColumn == null )
-			return;
-
-		// find index of dragged column
-		TableColumnModel columnModel = header.getColumnModel();
-		int columnCount = columnModel.getColumnCount();
-		int draggedColumnIndex = -1;
-		for( int i = 0; i < columnCount; i++ ) {
-			if( columnModel.getColumn( i ) == draggedColumn ) {
-				draggedColumnIndex = i;
-				break;
-			}
-		}
-
-		if( draggedColumnIndex < 0 )
-			return;
-
-		float lineWidth = UIScale.scale( 1f );
-		float topLineIndent = lineWidth;
-		float bottomLineIndent = lineWidth * 3;
-		Rectangle r = header.getHeaderRect( draggedColumnIndex );
-		r.x += header.getDraggedDistance();
-
-		Graphics2D g2 = (Graphics2D) g.create();
-		try {
-			FlatUIUtils.setRenderingHints( g2 );
-
-			// paint dragged bottom line
-			g2.setColor( bottomSeparatorColor );
-			g2.fill( new Rectangle2D.Float( r.x, r.y + r.height - lineWidth, r.width, lineWidth ) );
-
-			// paint dragged column separator lines
-			g2.setColor( separatorColor );
-			g2.fill( new Rectangle2D.Float( r.x, topLineIndent, lineWidth, r.height - bottomLineIndent ) );
-			g2.fill( new Rectangle2D.Float( r.x + r.width - lineWidth, r.y + topLineIndent, lineWidth, r.height - bottomLineIndent ) );
+			g2.fill( new Rectangle2D.Float( x, c.getHeight() - lineWidth, w, lineWidth ) );
 		} finally {
 			g2.dispose();
 		}
@@ -244,32 +186,6 @@ public class FlatTableHeaderUI
 		return size;
 	}
 
-	protected boolean hideLastVerticalLine() {
-		Container viewport = header.getParent();
-		Container viewportParent = (viewport != null) ? viewport.getParent() : null;
-		if( !(viewportParent instanceof JScrollPane) )
-			return false;
-
-		Rectangle cellRect = header.getHeaderRect( header.getColumnModel().getColumnCount() - 1 );
-
-		// using component orientation of scroll pane here because it is also used in FlatTableUI
-		JScrollPane scrollPane = (JScrollPane) viewportParent;
-		return scrollPane.getComponentOrientation().isLeftToRight()
-			? cellRect.x + cellRect.width >= viewport.getWidth()
-			: cellRect.x <= 0;
-	}
-
-	protected boolean hideTrailingVerticalLine() {
-		Container viewport = header.getParent();
-		Container viewportParent = (viewport != null) ? viewport.getParent() : null;
-		if( !(viewportParent instanceof JScrollPane) )
-			return false;
-
-		JScrollPane scrollPane = (JScrollPane) viewportParent;
-		return viewport == scrollPane.getColumnHeader() &&
-			scrollPane.getCorner( ScrollPaneConstants.UPPER_TRAILING_CORNER ) == null;
-	}
-
 	//---- class FlatTableCellHeaderRenderer ----------------------------------
 
 	/**
@@ -346,4 +262,54 @@ public class FlatTableHeaderUI
 			return (origBorder != null) ? origBorder.isBorderOpaque() : false;
 		}
 	}
+
+	//---- class FlatMouseInputHandler ----------------------------------------
+
+	/**
+	 * @since 1.6
+	 */
+	protected class FlatMouseInputHandler
+		extends MouseInputHandler
+	{
+		Cursor oldCursor;
+
+		@Override
+		public void mouseMoved( MouseEvent e ) {
+			// restore old cursor, which is necessary because super.mouseMoved() swaps cursors
+			if( oldCursor != null ) {
+				header.setCursor( oldCursor );
+				oldCursor = null;
+			}
+
+			super.mouseMoved( e );
+
+			// if resizing last column is not possible, then Swing still shows a resize cursor,
+			// which can be confusing for the user --> change cursor to standard cursor
+			JTable table;
+			int column;
+			if( header.isEnabled() &&
+				(table = header.getTable()) != null &&
+				table.getAutoResizeMode() != JTable.AUTO_RESIZE_OFF &&
+				header.getCursor() == Cursor.getPredefinedCursor( Cursor.E_RESIZE_CURSOR ) &&
+				(column = header.columnAtPoint( e.getPoint() )) >= 0 &&
+				column == header.getColumnModel().getColumnCount() - 1 )
+			{
+				// mouse is in last column
+				Rectangle r = header.getHeaderRect( column );
+				r.grow( -3, 0 );
+				if( !r.contains( e.getX(), e.getY() ) ) {
+					// mouse is in left or right resize area of last column
+					boolean isResizeLastColumn = (e.getX() >= r.x + (r.width / 2));
+					if( !header.getComponentOrientation().isLeftToRight() )
+						isResizeLastColumn = !isResizeLastColumn;
+
+					if( isResizeLastColumn ) {
+						// resize is not possible --> change cursor to standard cursor
+						oldCursor = header.getCursor();
+						header.setCursor( Cursor.getDefaultCursor() );
+					}
+				}
+			}
+		}
+	}
 }

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

@@ -25,6 +25,7 @@ import java.awt.Graphics2D;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
 import java.awt.geom.Rectangle2D;
+import java.beans.PropertyChangeListener;
 import javax.swing.JComponent;
 import javax.swing.JScrollPane;
 import javax.swing.JViewport;
@@ -34,6 +35,7 @@ import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicTableUI;
 import javax.swing.table.JTableHeader;
+import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.util.Graphics2DProxy;
 import com.formdev.flatlaf.util.SystemInfo;
 import com.formdev.flatlaf.util.UIScale;
@@ -69,6 +71,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Table.rowHeight							int
  * @uiDefault Table.showHorizontalLines					boolean
  * @uiDefault Table.showVerticalLines					boolean
+ * @uiDefault Table.showTrailingVerticalLine			boolean
  * @uiDefault Table.intercellSpacing					Dimension
  * @uiDefault Table.selectionInactiveBackground			Color
  * @uiDefault Table.selectionInactiveForeground			Color
@@ -90,6 +93,7 @@ public class FlatTableUI
 {
 	protected boolean showHorizontalLines;
 	protected boolean showVerticalLines;
+	/** @since 1.6 */ protected boolean showTrailingVerticalLine;
 	protected Dimension intercellSpacing;
 
 	protected Color selectionBackground;
@@ -101,6 +105,8 @@ public class FlatTableUI
 	private boolean oldShowVerticalLines;
 	private Dimension oldIntercellSpacing;
 
+	private PropertyChangeListener propertyChangeListener;
+
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatTableUI();
 	}
@@ -111,6 +117,7 @@ public class FlatTableUI
 
 		showHorizontalLines = UIManager.getBoolean( "Table.showHorizontalLines" );
 		showVerticalLines = UIManager.getBoolean( "Table.showVerticalLines" );
+		showTrailingVerticalLine = UIManager.getBoolean( "Table.showTrailingVerticalLine" );
 		intercellSpacing = UIManager.getDimension( "Table.intercellSpacing" );
 
 		selectionBackground = UIManager.getColor( "Table.selectionBackground" );
@@ -159,6 +166,25 @@ public class FlatTableUI
 			table.setIntercellSpacing( oldIntercellSpacing );
 	}
 
+	@Override
+	protected void installListeners() {
+		super.installListeners();
+
+		propertyChangeListener = e -> {
+			if( FlatClientProperties.COMPONENT_FOCUS_OWNER.equals( e.getPropertyName() ) )
+				toggleSelectionColors();
+		};
+		table.addPropertyChangeListener( propertyChangeListener );
+	}
+
+	@Override
+	protected void uninstallListeners() {
+		super.uninstallListeners();
+
+		table.removePropertyChangeListener( propertyChangeListener );
+		propertyChangeListener = null;
+	}
+
 	@Override
 	protected FocusListener createFocusListener() {
 		return new BasicTableUI.FocusHandler() {
@@ -240,7 +266,7 @@ public class FlatTableUI
 					if( isDragging &&
 						SystemInfo.isJava_9_orLater &&
 						((horizontalLines && y1 == y2) || (verticalLines && x1 == x2)) &&
-						wasInvokedFromPaintDraggedArea() )
+						wasInvokedFromMethod( "paintDraggedArea" ) )
 					{
 						if( y1 == y2 ) {
 							// horizontal grid line
@@ -282,22 +308,8 @@ public class FlatTableUI
 					return wasInvokedFromMethod( "paintGrid" );
 				}
 
-				private boolean wasInvokedFromPaintDraggedArea() {
-					return wasInvokedFromMethod( "paintDraggedArea" );
-				}
-
 				private boolean wasInvokedFromMethod( String methodName ) {
-					StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
-					for( int i = 0; i < 10 || i < stackTrace.length; i++ ) {
-						if( "javax.swing.plaf.basic.BasicTableUI".equals( stackTrace[i].getClassName() ) ) {
-							String methodName2 = stackTrace[i].getMethodName();
-							if( "paintCell".equals( methodName2 ) )
-								return false;
-							if( methodName.equals( methodName2 ) )
-								return true;
-						}
-					}
-					return false;
+					return StackUtils.wasInvokedFrom( BasicTableUI.class.getName(), methodName, 8 );
 				}
 			};
 		}
@@ -306,6 +318,10 @@ public class FlatTableUI
 	}
 
 	protected boolean hideLastVerticalLine() {
+		if( showTrailingVerticalLine )
+			return false;
+
+		// do not hide if table is not a child of a scroll pane
 		Container viewport = SwingUtilities.getUnwrappedParent( table );
 		Container viewportParent = (viewport != null) ? viewport.getParent() : null;
 		if( !(viewportParent instanceof JScrollPane) )

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

@@ -20,6 +20,8 @@ import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
+import java.awt.Insets;
+import java.awt.event.FocusListener;
 import java.beans.PropertyChangeEvent;
 import javax.swing.JComponent;
 import javax.swing.JTextArea;
@@ -52,6 +54,7 @@ import com.formdev.flatlaf.util.HiDPIUtils;
  * @uiDefault Component.isIntelliJTheme			boolean
  * @uiDefault TextArea.disabledBackground		Color	used if not enabled
  * @uiDefault TextArea.inactiveBackground		Color	used if not editable
+ * @uiDefault TextArea.focusedBackground		Color	optional
  *
  * @author Karl Tauber
  */
@@ -63,6 +66,11 @@ public class FlatTextAreaUI
 	protected Color background;
 	protected Color disabledBackground;
 	protected Color inactiveBackground;
+	protected Color focusedBackground;
+
+	private Insets defaultMargin;
+
+	private FocusListener focusListener;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatTextAreaUI();
@@ -84,6 +92,9 @@ public class FlatTextAreaUI
 		background = UIManager.getColor( "TextArea.background" );
 		disabledBackground = UIManager.getColor( "TextArea.disabledBackground" );
 		inactiveBackground = UIManager.getColor( "TextArea.inactiveBackground" );
+		focusedBackground = UIManager.getColor( "TextArea.focusedBackground" );
+
+		defaultMargin = UIManager.getInsets( "TextArea.margin" );
 	}
 
 	@Override
@@ -93,6 +104,24 @@ public class FlatTextAreaUI
 		background = null;
 		disabledBackground = null;
 		inactiveBackground = null;
+		focusedBackground = null;
+	}
+
+	@Override
+	protected void installListeners() {
+		super.installListeners();
+
+		// necessary to update focus background
+		focusListener = new FlatUIUtils.RepaintFocusListener( getComponent(), c -> focusedBackground != null );
+		getComponent().addFocusListener( focusListener );
+	}
+
+	@Override
+	protected void uninstallListeners() {
+		super.uninstallListeners();
+
+		getComponent().removeFocusListener( focusListener );
+		focusListener = null;
 	}
 
 	@Override
@@ -146,7 +175,7 @@ public class FlatTextAreaUI
 		if( c instanceof JTextArea && ((JTextArea)c).getColumns() > 0 )
 			return size;
 
-		return FlatEditorPaneUI.applyMinimumWidth( c, size, minimumWidth );
+		return FlatEditorPaneUI.applyMinimumWidth( c, size, minimumWidth, defaultMargin );
 	}
 
 	@Override
@@ -156,14 +185,6 @@ public class FlatTextAreaUI
 
 	@Override
 	protected void paintBackground( Graphics g ) {
-		JTextComponent c = getComponent();
-
-		// for compatibility with IntelliJ themes
-		if( isIntelliJTheme && (!c.isEnabled() || !c.isEditable()) && (c.getBackground() instanceof UIResource) ) {
-			FlatUIUtils.paintParentBackground( g, c );
-			return;
-		}
-
-		super.paintBackground( g );
+		FlatEditorPaneUI.paintBackground( g, getComponent(), isIntelliJTheme, focusedBackground );
 	}
 }

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

@@ -24,8 +24,10 @@ import java.awt.FontMetrics;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
+import java.awt.Rectangle;
 import java.awt.event.FocusListener;
 import java.beans.PropertyChangeEvent;
+import java.util.Objects;
 import javax.swing.JComboBox;
 import javax.swing.JComponent;
 import javax.swing.JSpinner;
@@ -40,6 +42,7 @@ import javax.swing.text.JTextComponent;
 import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.util.HiDPIUtils;
 import com.formdev.flatlaf.util.JavaCompatibility;
+import com.formdev.flatlaf.util.UIScale;
 
 /**
  * Provides the Flat LaF UI delegate for {@link javax.swing.JTextField}.
@@ -64,6 +67,7 @@ import com.formdev.flatlaf.util.JavaCompatibility;
  * @uiDefault Component.minimumWidth			int
  * @uiDefault Component.isIntelliJTheme			boolean
  * @uiDefault TextField.placeholderForeground	Color
+ * @uiDefault TextField.focusedBackground		Color	optional
  * @uiDefault TextComponent.selectAllOnFocusPolicy	String	never, once (default) or always
  * @uiDefault TextComponent.selectAllOnMouseClick	boolean
  *
@@ -75,6 +79,9 @@ public class FlatTextFieldUI
 	protected int minimumWidth;
 	protected boolean isIntelliJTheme;
 	protected Color placeholderForeground;
+	protected Color focusedBackground;
+
+	private Insets defaultMargin;
 
 	private FocusListener focusListener;
 
@@ -90,6 +97,9 @@ public class FlatTextFieldUI
 		minimumWidth = UIManager.getInt( "Component.minimumWidth" );
 		isIntelliJTheme = UIManager.getBoolean( "Component.isIntelliJTheme" );
 		placeholderForeground = UIManager.getColor( prefix + ".placeholderForeground" );
+		focusedBackground = UIManager.getColor( prefix + ".focusedBackground" );
+
+		defaultMargin = UIManager.getInsets( prefix + ".margin" );
 
 		LookAndFeel.installProperty( getComponent(), "opaque", false );
 
@@ -101,6 +111,7 @@ public class FlatTextFieldUI
 		super.uninstallDefaults();
 
 		placeholderForeground = null;
+		focusedBackground = null;
 
 		MigLayoutVisualPadding.uninstall( getComponent() );
 	}
@@ -109,7 +120,8 @@ public class FlatTextFieldUI
 	protected void installListeners() {
 		super.installListeners();
 
-		focusListener = new FlatUIUtils.RepaintFocusListener( getComponent() );
+		// necessary to update focus border and background
+		focusListener = new FlatUIUtils.RepaintFocusListener( getComponent(), null );
 		getComponent().addFocusListener( focusListener );
 	}
 
@@ -137,6 +149,7 @@ public class FlatTextFieldUI
 		switch( e.getPropertyName() ) {
 			case FlatClientProperties.PLACEHOLDER_TEXT:
 			case FlatClientProperties.COMPONENT_ROUND_RECT:
+			case FlatClientProperties.TEXT_FIELD_PADDING:
 				c.repaint();
 				break;
 
@@ -148,8 +161,8 @@ public class FlatTextFieldUI
 
 	@Override
 	protected void paintSafely( Graphics g ) {
-		paintBackground( g, getComponent(), isIntelliJTheme );
-		paintPlaceholder( g, getComponent(), placeholderForeground );
+		paintBackground( g, getComponent(), isIntelliJTheme, focusedBackground );
+		paintPlaceholder( g );
 
 		super.paintSafely( HiDPIUtils.createGraphicsTextYCorrection( (Graphics2D) g ) );
 	}
@@ -159,7 +172,7 @@ public class FlatTextFieldUI
 		// background is painted elsewhere
 	}
 
-	static void paintBackground( Graphics g, JTextComponent c, boolean isIntelliJTheme ) {
+	static void paintBackground( Graphics g, JTextComponent c, boolean isIntelliJTheme, Color focusedBackground ) {
 		// do not paint background if:
 		//   - not opaque and
 		//   - border is not a flat border and
@@ -180,19 +193,34 @@ public class FlatTextFieldUI
 		try {
 			FlatUIUtils.setRenderingHints( g2 );
 
-			Color background = c.getBackground();
-			g2.setColor( !(background instanceof UIResource)
-				? background
-				: (isIntelliJTheme && (!c.isEnabled() || !c.isEditable())
-					? FlatUIUtils.getParentBackground( c )
-					: background) );
+			g2.setColor( getBackground( c, isIntelliJTheme, focusedBackground ) );
 			FlatUIUtils.paintComponentBackground( g2, 0, 0, c.getWidth(), c.getHeight(), focusWidth, arc );
 		} finally {
 			g2.dispose();
 		}
 	}
 
-	static void paintPlaceholder( Graphics g, JTextComponent c, Color placeholderForeground ) {
+	static Color getBackground( JTextComponent c, boolean isIntelliJTheme, Color focusedBackground ) {
+		Color background = c.getBackground();
+
+		// always use explicitly set color
+		if( !(background instanceof UIResource) )
+			return background;
+
+		// focused
+		if( focusedBackground != null && FlatUIUtils.isPermanentFocusOwner( c ) )
+			return focusedBackground;
+
+		// for compatibility with IntelliJ themes
+		if( isIntelliJTheme && (!c.isEnabled() || !c.isEditable()) )
+			return FlatUIUtils.getParentBackground( c );
+
+		return background;
+	}
+
+	protected void paintPlaceholder( Graphics g ) {
+		JTextComponent c = getComponent();
+
 		// check whether text component is empty
 		if( c.getDocument().getLength() > 0 )
 			return;
@@ -207,15 +235,14 @@ public class FlatTextFieldUI
 			return;
 
 		// compute placeholder location
-		Insets insets = c.getInsets();
+		Rectangle r = getVisibleEditorRect();
 		FontMetrics fm = c.getFontMetrics( c.getFont() );
-		int x = insets.left;
-		int y = insets.top + fm.getAscent() + ((c.getHeight() - insets.top - insets.bottom - fm.getHeight()) / 2);
+		String clippedPlaceholder = JavaCompatibility.getClippedString( c, fm, (String) placeholder, r.width );
+		int x = r.x + (c.getComponentOrientation().isLeftToRight() ? 0 : r.width - fm.stringWidth( clippedPlaceholder ));
+		int y = r.y + fm.getAscent() + ((r.height - fm.getHeight()) / 2);
 
 		// paint placeholder
 		g.setColor( placeholderForeground );
-		String clippedPlaceholder = JavaCompatibility.getClippedString( jc, fm,
-				(String) placeholder, c.getWidth() - insets.left - insets.right );
 		FlatUIUtils.drawString( c, g, clippedPlaceholder, x, y );
 	}
 
@@ -229,11 +256,15 @@ public class FlatTextFieldUI
 		return applyMinimumWidth( c, super.getMinimumSize( c ), minimumWidth );
 	}
 
-	static Dimension applyMinimumWidth( JComponent c, Dimension size, int minimumWidth ) {
+	private Dimension applyMinimumWidth( JComponent c, Dimension size, int minimumWidth ) {
 		// do not apply minimum width if JTextField.columns is set
 		if( c instanceof JTextField && ((JTextField)c).getColumns() > 0 )
 			return size;
 
+		// do not apply minimum width if JTextComponent.margin is set
+		if( !hasDefaultMargins( c, defaultMargin ) )
+			return size;
+
 		// do not apply minimum width if used in combobox or spinner
 		Container parent = c.getParent();
 		if( parent instanceof JComboBox ||
@@ -246,4 +277,41 @@ public class FlatTextFieldUI
 		size.width = Math.max( size.width, scale( minimumWidth ) + Math.round( focusWidth * 2 ) );
 		return size;
 	}
+
+	static boolean hasDefaultMargins( JComponent c, Insets defaultMargin ) {
+		Insets margin = ((JTextComponent)c).getMargin();
+		return margin instanceof UIResource && Objects.equals( margin, defaultMargin );
+	}
+
+	@Override
+	protected Rectangle getVisibleEditorRect() {
+		Rectangle r = super.getVisibleEditorRect();
+		if( r != null ) {
+			// remove padding
+			Insets padding = getPadding();
+			if( padding != null ) {
+				r = FlatUIUtils.subtractInsets( r, padding );
+				r.width = Math.max( r.width, 0 );
+				r.height = Math.max( r.height, 0 );
+			}
+		}
+		return r;
+	}
+
+	/**
+	 * @since 1.4
+	 */
+	protected Insets getPadding() {
+		Object padding = getComponent().getClientProperty( FlatClientProperties.TEXT_FIELD_PADDING );
+		return (padding instanceof Insets) ? UIScale.scale( (Insets) padding ) : null;
+	}
+
+	/**
+	 * @since 1.4
+	 */
+	protected void scrollCaretToVisible() {
+		Caret caret = getComponent().getCaret();
+		if( caret instanceof FlatCaret )
+			((FlatCaret)caret).scrollCaretToVisible();
+	}
 }

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

@@ -16,17 +16,18 @@
 
 package com.formdev.flatlaf.ui;
 
+import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
+import java.awt.Insets;
+import java.awt.event.FocusListener;
 import java.beans.PropertyChangeEvent;
 import javax.swing.JComponent;
 import javax.swing.JEditorPane;
 import javax.swing.UIManager;
 import javax.swing.plaf.ComponentUI;
-import javax.swing.plaf.UIResource;
 import javax.swing.plaf.basic.BasicTextPaneUI;
-import javax.swing.text.JTextComponent;
 import com.formdev.flatlaf.util.HiDPIUtils;
 
 /**
@@ -51,6 +52,7 @@ import com.formdev.flatlaf.util.HiDPIUtils;
  *
  * @uiDefault Component.minimumWidth			int
  * @uiDefault Component.isIntelliJTheme			boolean
+ * @uiDefault TextPane.focusedBackground		Color	optional
  *
  * @author Karl Tauber
  */
@@ -59,8 +61,12 @@ public class FlatTextPaneUI
 {
 	protected int minimumWidth;
 	protected boolean isIntelliJTheme;
+	protected Color focusedBackground;
+
+	private Insets defaultMargin;
 
 	private Object oldHonorDisplayProperties;
+	private FocusListener focusListener;
 
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatTextPaneUI();
@@ -70,8 +76,12 @@ public class FlatTextPaneUI
 	protected void installDefaults() {
 		super.installDefaults();
 
+		String prefix = getPropertyPrefix();
 		minimumWidth = UIManager.getInt( "Component.minimumWidth" );
 		isIntelliJTheme = UIManager.getBoolean( "Component.isIntelliJTheme" );
+		focusedBackground = UIManager.getColor( prefix + ".focusedBackground" );
+
+		defaultMargin = UIManager.getInsets( prefix + ".margin" );
 
 		// use component font and foreground for HTML text
 		oldHonorDisplayProperties = getComponent().getClientProperty( JEditorPane.HONOR_DISPLAY_PROPERTIES );
@@ -82,9 +92,28 @@ public class FlatTextPaneUI
 	protected void uninstallDefaults() {
 		super.uninstallDefaults();
 
+		focusedBackground = null;
+
 		getComponent().putClientProperty( JEditorPane.HONOR_DISPLAY_PROPERTIES, oldHonorDisplayProperties );
 	}
 
+	@Override
+	protected void installListeners() {
+		super.installListeners();
+
+		// necessary to update focus background
+		focusListener = new FlatUIUtils.RepaintFocusListener( getComponent(), c -> focusedBackground != null );
+		getComponent().addFocusListener( focusListener );
+	}
+
+	@Override
+	protected void uninstallListeners() {
+		super.uninstallListeners();
+
+		getComponent().removeFocusListener( focusListener );
+		focusListener = null;
+	}
+
 	@Override
 	protected void propertyChange( PropertyChangeEvent e ) {
 		super.propertyChange( e );
@@ -93,12 +122,12 @@ public class FlatTextPaneUI
 
 	@Override
 	public Dimension getPreferredSize( JComponent c ) {
-		return FlatEditorPaneUI.applyMinimumWidth( c, super.getPreferredSize( c ), minimumWidth );
+		return FlatEditorPaneUI.applyMinimumWidth( c, super.getPreferredSize( c ), minimumWidth, defaultMargin );
 	}
 
 	@Override
 	public Dimension getMinimumSize( JComponent c ) {
-		return FlatEditorPaneUI.applyMinimumWidth( c, super.getMinimumSize( c ), minimumWidth );
+		return FlatEditorPaneUI.applyMinimumWidth( c, super.getMinimumSize( c ), minimumWidth, defaultMargin );
 	}
 
 	@Override
@@ -108,14 +137,6 @@ public class FlatTextPaneUI
 
 	@Override
 	protected void paintBackground( Graphics g ) {
-		JTextComponent c = getComponent();
-
-		// for compatibility with IntelliJ themes
-		if( isIntelliJTheme && (!c.isEnabled() || !c.isEditable()) && (c.getBackground() instanceof UIResource) ) {
-			FlatUIUtils.paintParentBackground( g, c );
-			return;
-		}
-
-		super.paintBackground( g );
+		FlatEditorPaneUI.paintBackground( g, getComponent(), isIntelliJTheme, focusedBackground );
 	}
 }

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

@@ -351,7 +351,7 @@ public class FlatTitlePane
 
 		// set icon
 		if( !images.isEmpty() )
-			iconLabel.setIcon( FlatTitlePaneIcon.create( images, iconSize ) );
+			iconLabel.setIcon( new FlatTitlePaneIcon( images, iconSize ) );
 		else {
 			// no icon set on window --> use default icon
 			Icon defaultIcon = UIManager.getIcon( "TitlePane.icon" );
@@ -508,7 +508,7 @@ public class FlatTitlePane
 
 	protected void menuBarLayouted() {
 		updateNativeTitleBarHeightAndHitTestSpotsLater();
-		revalidate();
+		doLayout();
 	}
 
 /*debug
@@ -521,13 +521,13 @@ public class FlatTitlePane
 			g.drawLine( 0, debugTitleBarHeight, getWidth(), debugTitleBarHeight );
 		}
 		if( debugHitTestSpots != null ) {
-			g.setColor( Color.blue );
+			g.setColor( Color.red );
 			Point offset = SwingUtilities.convertPoint( this, 0, 0, window );
 			for( Rectangle r : debugHitTestSpots )
 				g.drawRect( r.x - offset.x, r.y - offset.y, r.width - 1, r.height - 1 );
 		}
 		if( debugAppIconBounds != null ) {
-			g.setColor( Color.red );
+			g.setColor( Color.blue);
 			Point offset = SwingUtilities.convertPoint( this, 0, 0, window );
 			Rectangle r = debugAppIconBounds;
 			g.drawRect( r.x - offset.x, r.y - offset.y, r.width - 1, r.height - 1 );
@@ -723,14 +723,29 @@ debug*/
 		List<Rectangle> hitTestSpots = new ArrayList<>();
 		Rectangle appIconBounds = null;
 		if( iconLabel.isVisible() ) {
-			// compute real icon size (without insets)
+			// compute real icon size (without insets; 1px wider for easier hitting)
 			Point location = SwingUtilities.convertPoint( iconLabel, 0, 0, window );
 			Insets iconInsets = iconLabel.getInsets();
 			Rectangle iconBounds = new Rectangle(
-				location.x + iconInsets.left,
-				location.y + iconInsets.top,
-				iconLabel.getWidth() - iconInsets.left - iconInsets.right,
-				iconLabel.getHeight() - iconInsets.top - iconInsets.bottom );
+				location.x + iconInsets.left - 1,
+				location.y + iconInsets.top - 1,
+				iconLabel.getWidth() - iconInsets.left - iconInsets.right + 2,
+				iconLabel.getHeight() - iconInsets.top - iconInsets.bottom + 2 );
+
+			// if frame is maximized, increase icon bounds to upper-left corner
+			// of window to allow closing window via double-click in upper-left corner
+			if( window instanceof Frame &&
+				(((Frame)window).getExtendedState() & Frame.MAXIMIZED_BOTH) != 0 )
+			{
+				iconBounds.height += iconBounds.y;
+				iconBounds.y = 0;
+
+				if( window.getComponentOrientation().isLeftToRight() ) {
+					iconBounds.width += iconBounds.x;
+					iconBounds.x = 0;
+				} else
+					iconBounds.width += iconInsets.right;
+			}
 
 			if( hasJBRCustomDecoration() )
 				hitTestSpots.add( iconBounds );

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

@@ -20,8 +20,6 @@ import java.awt.Dimension;
 import java.awt.Image;
 import java.util.ArrayList;
 import java.util.List;
-import javax.swing.Icon;
-import javax.swing.ImageIcon;
 import com.formdev.flatlaf.util.MultiResolutionImageSupport;
 import com.formdev.flatlaf.util.ScaledImageIcon;
 
@@ -31,40 +29,43 @@ import com.formdev.flatlaf.util.ScaledImageIcon;
 public class FlatTitlePaneIcon
 	extends ScaledImageIcon
 {
-	public static Icon create( List<Image> images, Dimension size ) {
-		// collect all images including multi-resolution variants
+	private final List<Image> images;
+
+	/**
+	 * @since 1.2
+	 */
+	public FlatTitlePaneIcon( List<Image> images, Dimension size ) {
+		super( null, size.width, size.height );
+		this.images = images;
+	}
+
+	@Override
+	protected Image getResolutionVariant( int destImageWidth, int destImageHeight ) {
+		// collect all images including multi-resolution variants for requested size
 		List<Image> allImages = new ArrayList<>();
 		for( Image image : images ) {
 			if( MultiResolutionImageSupport.isMultiResolutionImage( image ) )
-				allImages.addAll( MultiResolutionImageSupport.getResolutionVariants( image ) );
+				allImages.add( MultiResolutionImageSupport.getResolutionVariant( image, destImageWidth, destImageHeight ) );
 			else
 				allImages.add( image );
 		}
 
+		if( allImages.size() == 1 )
+			return allImages.get( 0 );
+
 		// sort images by size
 		allImages.sort( (image1, image2) -> {
 			return image1.getWidth( null ) - image2.getWidth( null );
 		} );
 
-		// create icon
-		return new FlatTitlePaneIcon( allImages, size );
-	}
-
-	private final List<Image> images;
-
-	private FlatTitlePaneIcon( List<Image> images, Dimension size ) {
-		super( new ImageIcon( images.get( 0 ) ), size.width, size.height );
-		this.images = images;
-	}
-
-	@Override
-	protected Image getResolutionVariant( int destImageWidth, int destImageHeight ) {
-		for( Image image : images ) {
+		// search for optimal image size
+		for( Image image : allImages ) {
 			if( destImageWidth <= image.getWidth( null ) &&
 				destImageHeight <= image.getHeight( null ) )
 			  return image;
 		}
 
-		return images.get( images.size() - 1 );
+		// use largest image
+		return allImages.get( allImages.size() - 1 );
 	}
 }

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

@@ -22,6 +22,7 @@ import java.awt.event.ContainerEvent;
 import java.awt.event.ContainerListener;
 import javax.swing.AbstractButton;
 import javax.swing.JComponent;
+import javax.swing.UIManager;
 import javax.swing.border.Border;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.basic.BasicToolBarUI;
@@ -41,15 +42,47 @@ import javax.swing.plaf.basic.BasicToolBarUI;
  * @uiDefault ToolBar.floatingForeground				Color
  * @uiDefault ToolBar.isRollover						boolean
  *
+ * <!-- FlatToolBarUI -->
+ *
+ * @uiDefault ToolBar.focusableButtons					boolean
+ *
  * @author Karl Tauber
  */
 public class FlatToolBarUI
 	extends BasicToolBarUI
 {
+	/** @since 1.4 */
+	protected boolean focusableButtons;
+
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatToolBarUI();
 	}
 
+	@Override
+	public void installUI( JComponent c ) {
+		super.installUI( c );
+
+		// disable focusable state of buttons (when switching from another Laf)
+		if( !focusableButtons )
+			setButtonsFocusable( false );
+	}
+
+	@Override
+	public void uninstallUI( JComponent c ) {
+		super.uninstallUI( c );
+
+		// re-enable focusable state of buttons (when switching to another Laf)
+		if( !focusableButtons )
+			setButtonsFocusable( true );
+	}
+
+	@Override
+	protected void installDefaults() {
+		super.installDefaults();
+
+		focusableButtons = UIManager.getBoolean( "ToolBar.focusableButtons" );
+	}
+
 	@Override
 	protected ContainerListener createToolBarContListener() {
 		return new ToolBarContListener() {
@@ -57,22 +90,36 @@ public class FlatToolBarUI
 			public void componentAdded( ContainerEvent e ) {
 				super.componentAdded( e );
 
-				Component c = e.getChild();
-				if( c instanceof AbstractButton )
-					c.setFocusable( false );
+				if( !focusableButtons ) {
+					Component c = e.getChild();
+					if( c instanceof AbstractButton )
+						c.setFocusable( false );
+				}
 			}
 
 			@Override
 			public void componentRemoved( ContainerEvent e ) {
 				super.componentRemoved( e );
 
-				Component c = e.getChild();
-				if( c instanceof AbstractButton )
-					c.setFocusable( true );
+				if( !focusableButtons ) {
+					Component c = e.getChild();
+					if( c instanceof AbstractButton )
+						c.setFocusable( true );
+				}
 			}
 		};
 	}
 
+	/**
+	 * @since 1.4
+	 */
+	protected void setButtonsFocusable( boolean focusable ) {
+		for( Component c : toolBar.getComponents() ) {
+			if( c instanceof AbstractButton )
+				c.setFocusable( focusable );
+		}
+	}
+
 	// disable rollover border
 	@Override protected void setBorderToRollover( Component c ) {}
 	@Override protected void setBorderToNonRollover( Component c ) {}

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

@@ -107,6 +107,8 @@ public class FlatTreeUI
 	protected boolean wideSelection;
 	protected boolean showCellFocusIndicator;
 
+	private Color defaultCellNonSelectionBackground;
+
 	public static ComponentUI createUI( JComponent c ) {
 		return new FlatTreeUI();
 	}
@@ -125,6 +127,8 @@ public class FlatTreeUI
 		wideSelection = UIManager.getBoolean( "Tree.wideSelection" );
 		showCellFocusIndicator = UIManager.getBoolean( "Tree.showCellFocusIndicator" );
 
+		defaultCellNonSelectionBackground = UIManager.getColor( "Tree.textBackground" );
+
 		// scale
 		int rowHeight = FlatUIUtils.getUIInt( "Tree.rowHeight", 16 );
 		if( rowHeight > 0 )
@@ -144,6 +148,8 @@ public class FlatTreeUI
 		selectionInactiveBackground = null;
 		selectionInactiveForeground = null;
 		selectionBorderColor = null;
+
+		defaultCellNonSelectionBackground = null;
 	}
 
 	@Override
@@ -224,6 +230,26 @@ public class FlatTreeUI
 			tree.repaint( 0, r.y, tree.getWidth(), r.height );
 	}
 
+	@Override
+	public Rectangle getPathBounds( JTree tree, TreePath path ) {
+		Rectangle bounds = super.getPathBounds( tree, path );
+
+		// If this method was invoked from JTree.getPathForLocation(int x, int y) to check whether
+		// the location is within tree node bounds, then return the bounds of a wide node.
+		// This changes the behavior of JTree.getPathForLocation(int x, int y) and
+		// JTree.getRowForLocation(int x, int y), which now return the path/row even
+		// if [x,y] is in the wide row area outside of the actual tree node.
+		if( bounds != null &&
+			isWideSelection() &&
+			UIManager.getBoolean( "FlatLaf.experimental.tree.widePathForLocation" ) &&
+			StackUtils.wasInvokedFrom( JTree.class.getName(), "getPathForLocation", 5 ) )
+		{
+			bounds.x = 0;
+			bounds.width = tree.getWidth();
+		}
+		return bounds;
+	}
+
 	/**
 	 * Same as super.paintRow(), but supports wide selection and uses
 	 * inactive selection background/foreground if tree is not focused.
@@ -237,9 +263,19 @@ public class FlatTreeUI
 		boolean isDropRow = isDropRow( row );
 		boolean needsSelectionPainting = (isSelected || isDropRow) && isPaintSelection();
 
-		// do not paint row if editing, except if selection needs painted
-		if( isEditing && !needsSelectionPainting )
+		// do not paint row if editing
+		if( isEditing ) {
+			// paint wide selection
+			// (do not access cell renderer here to avoid side effect
+			// if renderer component is also used as editor component)
+			if( isSelected && isWideSelection() ) {
+				Color oldColor = g.getColor();
+				g.setColor( selectionInactiveBackground );
+				paintWideSelection( g, clipBounds, insets, bounds, path, row, isExpanded, hasBeenExpanded, isLeaf );
+				g.setColor( oldColor );
+			}
 			return;
+		}
 
 		boolean hasFocus = FlatUIUtils.isPermanentFocusOwner( tree );
 		boolean cellHasFocus = hasFocus && (row == getLeadSelectionRow());
@@ -296,39 +332,31 @@ public class FlatTreeUI
 
 			if( isWideSelection() ) {
 				// wide selection
-				g.fillRect( 0, bounds.y, tree.getWidth(), bounds.height );
-
-				// paint expand/collapse icon
-				// (was already painted before, but painted over with wide selection)
-				if( shouldPaintExpandControl( path, row, isExpanded, hasBeenExpanded, isLeaf ) ) {
-					paintExpandControl( g, clipBounds, insets, bounds,
-						path, row, isExpanded, hasBeenExpanded, isLeaf );
-				}
+				paintWideSelection( g, clipBounds, insets, bounds, path, row, isExpanded, hasBeenExpanded, isLeaf );
 			} else {
 				// non-wide selection
-				int xOffset = 0;
-				int imageOffset = 0;
-
-				if( rendererComponent instanceof JLabel ) {
-					JLabel label = (JLabel) rendererComponent;
-					Icon icon = label.getIcon();
-					imageOffset = (icon != null && label.getText() != null)
-						? icon.getIconWidth() + Math.max( label.getIconTextGap() - 1, 0 )
-						: 0;
-					xOffset = label.getComponentOrientation().isLeftToRight() ? imageOffset : 0;
-				}
-
-				g.fillRect( bounds.x + xOffset, bounds.y, bounds.width - imageOffset, bounds.height );
+				paintCellBackground( g, rendererComponent, bounds );
 			}
 
 			// this is actually not necessary because renderer should always set color
 			// before painting, but doing anyway to avoid any side effect (in bad renderers)
 			g.setColor( oldColor );
+		} else {
+			// paint cell background if DefaultTreeCellRenderer.getBackgroundNonSelectionColor() is set
+			if( rendererComponent instanceof DefaultTreeCellRenderer ) {
+				DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer) rendererComponent;
+				Color bg = renderer.getBackgroundNonSelectionColor();
+				if( bg != null && !bg.equals( defaultCellNonSelectionBackground ) ) {
+					Color oldColor = g.getColor();
+					g.setColor( bg );
+					paintCellBackground( g, rendererComponent, bounds );
+					g.setColor( oldColor );
+				}
+			}
 		}
 
 		// paint renderer
-		if( !isEditing )
-			rendererPane.paintComponent( g, rendererComponent, tree, bounds.x, bounds.y, bounds.width, bounds.height, true );
+		rendererPane.paintComponent( g, rendererComponent, tree, bounds.x, bounds.y, bounds.width, bounds.height, true );
 
 		// restore background selection color and border selection color
 		if( oldBackgroundSelectionColor != null )
@@ -337,6 +365,35 @@ public class FlatTreeUI
 			((DefaultTreeCellRenderer)rendererComponent).setBorderSelectionColor( oldBorderSelectionColor );
 	}
 
+	private void paintWideSelection( Graphics g, Rectangle clipBounds, Insets insets, Rectangle bounds,
+		TreePath path, int row, boolean isExpanded, boolean hasBeenExpanded, boolean isLeaf )
+	{
+		g.fillRect( 0, bounds.y, tree.getWidth(), bounds.height );
+
+		// paint expand/collapse icon
+		// (was already painted before, but painted over with wide selection)
+		if( shouldPaintExpandControl( path, row, isExpanded, hasBeenExpanded, isLeaf ) ) {
+			paintExpandControl( g, clipBounds, insets, bounds,
+				path, row, isExpanded, hasBeenExpanded, isLeaf );
+		}
+	}
+
+	private void paintCellBackground( Graphics g, Component rendererComponent, Rectangle bounds ) {
+		int xOffset = 0;
+		int imageOffset = 0;
+
+		if( rendererComponent instanceof JLabel ) {
+			JLabel label = (JLabel) rendererComponent;
+			Icon icon = label.getIcon();
+			imageOffset = (icon != null && label.getText() != null)
+				? icon.getIconWidth() + Math.max( label.getIconTextGap() - 1, 0 )
+				: 0;
+			xOffset = label.getComponentOrientation().isLeftToRight() ? imageOffset : 0;
+		}
+
+		g.fillRect( bounds.x + xOffset, bounds.y, bounds.width - imageOffset, bounds.height );
+	}
+
 	/**
 	 * Checks whether dropping on a row.
 	 * See DefaultTreeCellRenderer.getTreeCellRendererComponent().

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

@@ -69,6 +69,7 @@ public class FlatUIUtils
 {
 	public static final boolean MAC_USE_QUARTZ = Boolean.getBoolean( "apple.awt.graphics.UseQuartz" );
 
+	private static boolean useSharedUIs = true;
 	private static WeakHashMap<LookAndFeel, IdentityHashMap<Object, ComponentUI>> sharedUIinstances = new WeakHashMap<>();
 
 	public static Rectangle addInsets( Rectangle r, Insets insets ) {
@@ -94,6 +95,11 @@ public class FlatUIUtils
 	}
 
 	public static Insets addInsets( Insets insets1, Insets insets2 ) {
+		if( insets1 == null )
+			return insets2;
+		if( insets2 == null )
+			return insets1;
+
 		return new Insets(
 			insets1.top + insets2.top,
 			insets1.left + insets2.left,
@@ -660,7 +666,7 @@ public class FlatUIUtils
 	 * @since 1.1
 	 */
 	public static void paintArrow( Graphics2D g, int x, int y, int width, int height,
-		int direction, boolean chevron, int arrowSize, int xOffset, int yOffset )
+		int direction, boolean chevron, int arrowSize, float xOffset, float yOffset )
 	{
 		// compute arrow width/height
 		int aw = UIScale.scale( arrowSize + (chevron ? 0 : 1) );
@@ -679,8 +685,10 @@ public class FlatUIUtils
 		int extra = chevron ? 1 : 0;
 
 		// compute arrow location
-		int ax = x + Math.round( ((width - (aw + extra)) / 2f) + UIScale.scale( (float) xOffset ) );
-		int ay = y + Math.round( ((height - (ah + extra)) / 2f) + UIScale.scale( (float) yOffset ) );
+		float ox = ((width - (aw + extra)) / 2f) + UIScale.scale( xOffset );
+		float oy = ((height - (ah + extra)) / 2f) + UIScale.scale( yOffset );
+		int ax = x + ((direction == SwingConstants.WEST) ? -Math.round( -ox ) : Math.round( ox ));
+		int ay = y + ((direction == SwingConstants.NORTH) ? -Math.round( -oy ) : Math.round( oy ));
 
 		// paint arrow
 		g.translate( ax, ay );
@@ -818,6 +826,27 @@ debug*/
 		return explicitlySet;
 	}
 
+	/**
+	 * Returns whether shared UI delegates are used.
+	 *
+	 * @since 1.6
+	 */
+	public static boolean isUseSharedUIs() {
+		return useSharedUIs;
+	}
+
+	/**
+	 * Specifies whether shared UI delegates are used.
+	 * This does not change already existing UI delegates.
+	 *
+	 * @since 1.6
+	 */
+	public static boolean setUseSharedUIs( boolean useSharedUIs ) {
+		boolean old = FlatUIUtils.useSharedUIs;
+		FlatUIUtils.useSharedUIs = useSharedUIs;
+		return old;
+	}
+
 	/**
 	 * Creates a shared component UI for the given key and the current Laf.
 	 * Each Laf instance has its own shared component UI instance.
@@ -826,6 +855,9 @@ debug*/
 	 * may use multiple Laf instances at the same time.
 	 */
 	public static ComponentUI createSharedUI( Object key, Supplier<ComponentUI> newInstanceSupplier ) {
+		if( !useSharedUIs )
+			return newInstanceSupplier.get();
+
 		return sharedUIinstances
 			.computeIfAbsent( UIManager.getLookAndFeel(), k -> new IdentityHashMap<>() )
 			.computeIfAbsent( key, k -> newInstanceSupplier.get() );
@@ -837,19 +869,23 @@ debug*/
 		implements FocusListener
 	{
 		private final Component repaintComponent;
+		private final Predicate<Component> repaintCondition;
 
-		public RepaintFocusListener( Component repaintComponent ) {
+		public RepaintFocusListener( Component repaintComponent, Predicate<Component> repaintCondition ) {
 			this.repaintComponent = repaintComponent;
+			this.repaintCondition = repaintCondition;
 		}
 
 		@Override
 		public void focusGained( FocusEvent e ) {
-			repaintComponent.repaint();
+			if( repaintCondition == null || repaintCondition.test( repaintComponent ) )
+				repaintComponent.repaint();
 		}
 
 		@Override
 		public void focusLost( FocusEvent e ) {
-			repaintComponent.repaint();
+			if( repaintCondition == null || repaintCondition.test( repaintComponent ) )
+				repaintComponent.repaint();
 		}
 	}
 }

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

@@ -181,8 +181,12 @@ public abstract class FlatWindowResizer
 	protected abstract boolean isWindowResizable();
 	protected abstract Rectangle getWindowBounds();
 	protected abstract void setWindowBounds( Rectangle r );
+	protected abstract boolean limitToParentBounds();
+	protected abstract Rectangle getParentBounds();
 	protected abstract boolean honorMinimumSizeOnResize();
+	protected abstract boolean honorMaximumSizeOnResize();
 	protected abstract Dimension getWindowMinimumSize();
+	protected abstract Dimension getWindowMaximumSize();
 
 	protected void beginResizing( int direction ) {}
 	protected void endResizing() {}
@@ -283,6 +287,16 @@ public abstract class FlatWindowResizer
 			}
 		}
 
+		@Override
+		protected boolean limitToParentBounds() {
+			return false;
+		}
+
+		@Override
+		protected Rectangle getParentBounds() {
+			return null;
+		}
+
 		@Override
 		protected boolean honorMinimumSizeOnResize() {
 			return
@@ -290,11 +304,21 @@ public abstract class FlatWindowResizer
 				(honorDialogMinimumSizeOnResize && window instanceof Dialog);
 		}
 
+		@Override
+		protected boolean honorMaximumSizeOnResize() {
+			return false;
+		}
+
 		@Override
 		protected Dimension getWindowMinimumSize() {
 			return window.getMinimumSize();
 		}
 
+		@Override
+		protected Dimension getWindowMaximumSize() {
+			return window.getMaximumSize();
+		}
+
 		@Override
 		boolean isDialog() {
 			return window instanceof Dialog;
@@ -354,16 +378,36 @@ public abstract class FlatWindowResizer
 			desktopManager.get().resizeFrame( getFrame(), r.x, r.y, r.width, r.height );
 		}
 
+		@Override
+		protected boolean limitToParentBounds() {
+			return true;
+		}
+
+		@Override
+		protected Rectangle getParentBounds() {
+			return getFrame().getParent().getBounds();
+		}
+
 		@Override
 		protected boolean honorMinimumSizeOnResize() {
 			return true;
 		}
 
+		@Override
+		protected boolean honorMaximumSizeOnResize() {
+			return true;
+		}
+
 		@Override
 		protected Dimension getWindowMinimumSize() {
 			return getFrame().getMinimumSize();
 		}
 
+		@Override
+		protected Dimension getWindowMaximumSize() {
+			return getFrame().getMaximumSize();
+		}
+
 		@Override
 		protected void beginResizing( int direction ) {
 			desktopManager.get().beginResizingFrame( getFrame(), direction );
@@ -521,7 +565,7 @@ debug*/
 			int xOnScreen = e.getXOnScreen();
 			int yOnScreen = e.getYOnScreen();
 
-			// Get current window bounds and compute new bounds based them.
+			// Get current window bounds and compute new bounds based on them.
 			// This is necessary because window manager may alter window bounds while resizing.
 			// E.g. when having two monitors with different scale factors and resizing
 			// a window on first screen to the second screen, then the window manager may
@@ -535,41 +579,72 @@ debug*/
 			// top
 			if( resizeDir == N_RESIZE_CURSOR || resizeDir == NW_RESIZE_CURSOR || resizeDir == NE_RESIZE_CURSOR ) {
 				newBounds.y = yOnScreen - dragTopOffset;
+				if( limitToParentBounds() && newBounds.y < 0 )
+					newBounds.y = 0;
 				newBounds.height += (oldBounds.y - newBounds.y);
 			}
 
 			// bottom
-			if( resizeDir == S_RESIZE_CURSOR || resizeDir == SW_RESIZE_CURSOR || resizeDir == SE_RESIZE_CURSOR )
+			if( resizeDir == S_RESIZE_CURSOR || resizeDir == SW_RESIZE_CURSOR || resizeDir == SE_RESIZE_CURSOR ) {
 				newBounds.height = (yOnScreen + dragBottomOffset) - newBounds.y;
+				if( limitToParentBounds() ) {
+					int parentHeight = getParentBounds().height;
+					if( newBounds.y + newBounds.height > parentHeight )
+						newBounds.height = parentHeight - newBounds.y;
+				}
+			}
 
 			// left
 			if( resizeDir == W_RESIZE_CURSOR || resizeDir == NW_RESIZE_CURSOR || resizeDir == SW_RESIZE_CURSOR ) {
 				newBounds.x = xOnScreen - dragLeftOffset;
+				if( limitToParentBounds() && newBounds.x < 0 )
+					newBounds.x = 0;
 				newBounds.width += (oldBounds.x - newBounds.x);
 			}
 
 			// right
-			if( resizeDir == E_RESIZE_CURSOR || resizeDir == NE_RESIZE_CURSOR || resizeDir == SE_RESIZE_CURSOR )
+			if( resizeDir == E_RESIZE_CURSOR || resizeDir == NE_RESIZE_CURSOR || resizeDir == SE_RESIZE_CURSOR ) {
 				newBounds.width = (xOnScreen + dragRightOffset) - newBounds.x;
+				if( limitToParentBounds() ) {
+					int parentWidth = getParentBounds().width;
+					if( newBounds.x + newBounds.width > parentWidth )
+						newBounds.width = parentWidth - newBounds.x;
+				}
+			}
 
 			// apply minimum window size
 			Dimension minimumSize = honorMinimumSizeOnResize() ? getWindowMinimumSize() : null;
 			if( minimumSize == null )
 				minimumSize = UIScale.scale( new Dimension( 150, 50 ) );
-			if( newBounds.width < minimumSize.width ) {
-				if( newBounds.x != oldBounds.x )
-					newBounds.x -= (minimumSize.width - newBounds.width);
-				newBounds.width = minimumSize.width;
-			}
-			if( newBounds.height < minimumSize.height ) {
-				if( newBounds.y != oldBounds.y )
-					newBounds.y -= (minimumSize.height - newBounds.height);
-				newBounds.height = minimumSize.height;
+			if( newBounds.width < minimumSize.width )
+				changeWidth( oldBounds, newBounds, minimumSize.width );
+			if( newBounds.height < minimumSize.height )
+				changeHeight( oldBounds, newBounds, minimumSize.height );
+
+			// apply maximum window size
+			if( honorMaximumSizeOnResize() ) {
+				Dimension maximumSize = getWindowMaximumSize();
+				if( newBounds.width > maximumSize.width )
+					changeWidth( oldBounds, newBounds, maximumSize.width );
+				if( newBounds.height > maximumSize.height )
+					changeHeight( oldBounds, newBounds, maximumSize.height );
 			}
 
 			// set window bounds
 			if( !newBounds.equals( oldBounds ) )
 				setWindowBounds( newBounds );
 		}
+
+		private void changeWidth( Rectangle oldBounds, Rectangle newBounds, int width ) {
+			if( newBounds.x != oldBounds.x )
+				newBounds.x -= (width - newBounds.width);
+			newBounds.width = width;
+		}
+
+		private void changeHeight( Rectangle oldBounds, Rectangle newBounds, int height ) {
+			if( newBounds.y != oldBounds.y )
+				newBounds.y -= (height - newBounds.height);
+			newBounds.height = height;
+		}
 	}
 }

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

@@ -25,6 +25,8 @@ import java.awt.Point;
 import java.awt.Rectangle;
 import java.awt.Window;
 import java.awt.geom.AffineTransform;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
 import java.util.Collections;
 import java.util.IdentityHashMap;
 import java.util.List;
@@ -94,6 +96,11 @@ class FlatWindowsNativeWindowBorder
 				// Java 9 and later does not have this problem.
 				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( null, ex );
 				} catch( Exception ex ) {
 					LoggingFacade.INSTANCE.logSevere( null, ex );
 				}
@@ -156,11 +163,18 @@ class FlatWindowsNativeWindowBorder
 			return;
 
 		// install
-		WndProc wndProc = new WndProc( window );
-		if( wndProc.hwnd == 0 )
-			return;
+		try {
+			WndProc wndProc = new WndProc( window );
+			if( wndProc.hwnd == 0 )
+				return;
 
-		windowsMap.put( window, wndProc );
+			windowsMap.put( window, wndProc );
+		} catch( UnsatisfiedLinkError ex ) {
+			// catch for the case that the operating system prevents execution of DLL
+			// (e.g. if DLLs in temp folder are restricted)
+			// --> continue application without custom decorations
+			LoggingFacade.INSTANCE.logSevere( null, ex );
+		}
 	}
 
 	private void uninstall( Window window ) {
@@ -289,6 +303,7 @@ class FlatWindowsNativeWindowBorder
 	//---- class WndProc ------------------------------------------------------
 
 	private class WndProc
+		implements PropertyChangeListener
 	{
 		// WM_NCHITTEST mouse position codes
 		private static final int
@@ -308,30 +323,41 @@ class FlatWindowsNativeWindowBorder
 			this.window = window;
 
 			hwnd = installImpl( window );
+			if( hwnd == 0 )
+				return;
 
 			// remove the OS window title bar
-			if( window instanceof JFrame && ((JFrame)window).getExtendedState() != 0 ) {
-				// In case that the frame should be maximized or minimized immediately
-				// when showing, then it is necessary to defer ::SetWindowPos() invocation.
-				// Otherwise the frame will not be maximized or minimized.
-				// This occurs only if frame.pack() was no invoked.
-				EventQueue.invokeLater( () -> {
-					updateFrame( hwnd );
-				});
-			} else
-				updateFrame( hwnd );
+			updateFrame( hwnd, (window instanceof JFrame) ? ((JFrame)window).getExtendedState() : 0 );
+
+			// set window background (used when resizing window)
+			updateWindowBackground();
+			window.addPropertyChangeListener( "background", this );
 		}
 
 		void uninstall() {
+			window.removePropertyChangeListener( "background", this );
+
 			uninstallImpl( hwnd );
 
 			// cleanup
 			window = null;
 		}
 
+		@Override
+		public void propertyChange( PropertyChangeEvent e ) {
+			updateWindowBackground();
+		}
+
+		private void updateWindowBackground() {
+			Color bg = window.getBackground();
+			if( bg != null )
+				setWindowBackground( hwnd, bg.getRed(), bg.getGreen(), bg.getBlue() );
+		}
+
 		private native long installImpl( Window window );
 		private native void uninstallImpl( long hwnd );
-		private native void updateFrame( long hwnd );
+		private native void updateFrame( long hwnd, int state );
+		private native void setWindowBackground( long hwnd, int r, int g, int b );
 		private native void showWindow( long hwnd, int cmd );
 
 		// invoked from native code

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

@@ -70,9 +70,10 @@ public class JBRCustomDecorations
 			return null;
 
 		// check whether root pane already has a parent, which is the case when switching LaF
-		Window window = SwingUtilities.windowForComponent( rootPane );
-		if( window != null ) {
-			FlatNativeWindowBorder.install( window );
+		Container parent = rootPane.getParent();
+		if( parent != null ) {
+			if( parent instanceof Window )
+				FlatNativeWindowBorder.install( (Window) parent );
 			return null;
 		}
 
@@ -110,9 +111,9 @@ public class JBRCustomDecorations
 		// since it is actually not possible to uninstall JBR decorations,
 		// simply reduce titleBarHeight so that it is still possible to resize window
 		// and remove hitTestSpots
-		Window window = SwingUtilities.windowForComponent( rootPane );
-		if( window != null )
-			setHasCustomDecoration( window, false );
+		Container parent = rootPane.getParent();
+		if( parent instanceof Window )
+			setHasCustomDecoration( (Window) parent, false );
 	}
 
 	static boolean hasCustomDecoration( Window window ) {

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

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2021 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.util.function.BiPredicate;
+
+/**
+ * @author Karl Tauber
+ */
+class StackUtils
+{
+	private static final StackUtils INSTANCE = new StackUtilsImpl();
+
+	// hide from javadoc
+	StackUtils() {
+	}
+
+	/**
+	 * Checks whether current method was invoked from the given class and method.
+	 */
+	public static boolean wasInvokedFrom( String className, String methodName, int limit ) {
+		return wasInvokedFrom( (c,m) -> c.equals( className ) && m.equals( methodName ), limit );
+	}
+
+	/**
+	 * Checks whether current method was invoked from a class and method using the given predicate,
+	 * which gets the class name of the stack frame as first parameter and the method name as second parameter.
+	 */
+	public static boolean wasInvokedFrom( BiPredicate<String, String> predicate, int limit ) {
+		return INSTANCE.wasInvokedFromImpl( predicate, limit );
+	}
+
+	boolean wasInvokedFromImpl( BiPredicate<String, String> predicate, int limit ) {
+		throw new UnsupportedOperationException();
+	}
+}

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

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2021 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.util.function.BiPredicate;
+
+/**
+ * @author Karl Tauber
+ */
+class StackUtilsImpl
+	extends StackUtils
+{
+	@Override
+	boolean wasInvokedFromImpl( BiPredicate<String, String> predicate, int limit ) {
+		int count = -2;
+		StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
+		for( StackTraceElement stackTraceElement : stackTrace ) {
+			if( predicate.test( stackTraceElement.getClassName(), stackTraceElement.getMethodName() ) )
+				return true;
+
+			count++;
+			if( limit > 0 && count > limit )
+				return false;
+		}
+		return false;
+	}
+}

flatlaf-core/src/main/java/com/formdev/flatlaf/util/ColorFunctions.java

@@ -26,13 +26,16 @@ import java.awt.Color;
 public class ColorFunctions
 {
 	public static Color applyFunctions( Color color, ColorFunction... functions ) {
+		// convert RGB to HSL
 		float[] hsl = HSLColor.fromRGB( color );
 		float alpha = color.getAlpha() / 255f;
 		float[] hsla = { hsl[0], hsl[1], hsl[2], alpha * 100 };
 
+		// apply color functions
 		for( ColorFunction function : functions )
 			function.apply( hsla );
 
+		// convert HSL to RGB
 		return HSLColor.toRGB( hsla[0], hsla[1], hsla[2], hsla[3] / 100 );
 	}
 
@@ -145,7 +148,46 @@ public class ColorFunctions
 		}
 	}
 
-	//---- class HSLIncreaseDecrease ------------------------------------------
+	//---- class HSLChange ----------------------------------------------------
+
+	/**
+	 * Set the hue, saturation, luminance or alpha of a color.
+	 *
+	 * @since 1.6
+	 */
+	public static class HSLChange
+		implements ColorFunction
+	{
+		public final int hslIndex;
+		public final float value;
+
+		public HSLChange( int hslIndex, float value ) {
+			this.hslIndex = hslIndex;
+			this.value = value;
+		}
+
+		@Override
+		public void apply( float[] hsla ) {
+			hsla[hslIndex] = (hslIndex == 0)
+				? value % 360
+				: clamp( value );
+		}
+
+		@Override
+		public String toString() {
+			String name;
+			switch( hslIndex ) {
+				case 0: name = "changeHue"; break;
+				case 1: name = "changeSaturation"; break;
+				case 2: name = "changeLightness"; break;
+				case 3: name = "changeAlpha"; break;
+				default: throw new IllegalArgumentException();
+			}
+			return String.format( "%s(%.0f%s)", name, value, (hslIndex == 0 ? "" : "%") );
+		}
+	}
+
+	//---- class Fade ---------------------------------------------------------
 
 	/**
 	 * Set the alpha of a color.
@@ -169,4 +211,42 @@ public class ColorFunctions
 			return String.format( "fade(%.0f%%)", amount );
 		}
 	}
+
+	//---- class Mix ----------------------------------------------------------
+
+	/**
+	 * Mix two colors.
+	 *
+	 * @since 1.6
+	 */
+	public static class Mix
+		implements ColorFunction
+	{
+		public final Color color2;
+		public final float weight;
+
+		public Mix( Color color2, float weight ) {
+			this.color2 = color2;
+			this.weight = weight;
+		}
+
+		@Override
+		public void apply( float[] hsla ) {
+			// convert from HSL to RGB because color mixing is done on RGB values
+			Color color1 = HSLColor.toRGB( hsla[0], hsla[1], hsla[2], hsla[3] / 100 );
+
+			// mix
+			Color color = mix( color1, color2, weight / 100 );
+
+			// convert RGB to HSL
+			float[] hsl = HSLColor.fromRGB( color );
+			System.arraycopy( hsl, 0, hsla, 0, hsl.length );
+			hsla[3] = (color.getAlpha() / 255f) * 100;
+		}
+
+		@Override
+		public String toString() {
+			return String.format( "mix(#%08x,%.0f%%)", color2.getRGB(), weight );
+		}
+	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/util/Graphics2DProxy.java

@@ -256,11 +256,6 @@ public class Graphics2DProxy
 		delegate.dispose();
 	}
 
-	@Override
-	public void finalize() {
-		delegate.finalize();
-	}
-
 	@Override
 	public String toString() {
 		return delegate.toString();

flatlaf-core/src/main/java/com/formdev/flatlaf/util/NativeLibrary.java

@@ -20,6 +20,7 @@ import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URL;
+import java.nio.file.FileAlreadyExistsException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -144,26 +145,46 @@ public class NativeLibrary
 		String suffix = (dot >= 0) ? name.substring( dot ) : "";
 
 		Path tempDir = getTempDir();
-		if( tempDir != null ) {
-			deleteTemporaryFiles( tempDir );
 
-			return Files.createTempFile( tempDir, prefix, suffix );
-		} else
-			return Files.createTempFile( prefix, suffix );
+		// Note:
+		// Not using Files.createTempFile() here because it uses random number generator SecureRandom,
+		// which may take 5-10 seconds to initialize under particular conditions.
+
+		// Use current time in nanoseconds instead of a random number.
+		// To avoid (theoretical) collisions, append a counter.
+		long nanoTime = System.nanoTime();
+		for( int i = 0;; i++ ) {
+			String s = prefix + Long.toUnsignedString( nanoTime ) + i + suffix;
+			try {
+				return Files.createFile( tempDir.resolve( s ) );
+			} catch( FileAlreadyExistsException ex ) {
+				// ignore --> increment counter and try again
+			}
+		}
 	}
 
 	private static Path getTempDir() throws IOException {
+		// get standard temporary directory
+		String tmpdir = System.getProperty( "java.io.tmpdir" );
+
 		if( SystemInfo.isWindows ) {
 			// On Windows, where File.delete() and File.deleteOnExit() does not work
 			// for loaded native libraries, they will be deleted on next application startup.
 			// The default temporary directory may contain hundreds or thousands of files.
 			// To make searching for "marked for deletion" files as fast as possible,
 			// use a sub directory that contains only our temporary native libraries.
-			Path tempDir = Paths.get( System.getProperty( "java.io.tmpdir" ) + "/flatlaf.temp" );
-			Files.createDirectories( tempDir );
-			return tempDir;
-		} else
-			return null; // use standard temporary directory
+			tmpdir += "\\flatlaf.temp";
+		}
+
+		// create temporary directory
+		Path tempDir = Paths.get( tmpdir );
+		Files.createDirectories( tempDir );
+
+		// delete no longer needed temporary files (from already exited applications)
+		if( SystemInfo.isWindows )
+			deleteTemporaryFiles( tempDir );
+
+		return tempDir;
 	}
 
 	private static void deleteTemporaryFiles( Path tempDir ) {

flatlaf-core/src/main/java/com/formdev/flatlaf/util/ScaledImageIcon.java

@@ -77,7 +77,7 @@ debug*/
 		double scaleFactor = systemScaleFactor * userScaleFactor;
 
 		// paint input image icon if not necessary to scale
-		if( scaleFactor == 1 && iconWidth == imageIcon.getIconWidth() && iconHeight == imageIcon.getIconHeight() ) {
+		if( scaleFactor == 1 && imageIcon != null && iconWidth == imageIcon.getIconWidth() && iconHeight == imageIcon.getIconHeight() ) {
 			imageIcon.paintIcon( c, g, x, y );
 			return;
 		}

flatlaf-core/src/main/java/com/formdev/flatlaf/util/SystemInfo.java

@@ -46,6 +46,7 @@ public class SystemInfo
 	public static final boolean isJava_9_orLater;
 	public static final boolean isJava_11_orLater;
 	public static final boolean isJava_15_orLater;
+	/** @since 2 */ public static final boolean isJava_17_orLater;
 
 	// Java VMs
 	public static final boolean isJetBrainsJVM;
@@ -82,6 +83,7 @@ public class SystemInfo
 		isJava_9_orLater = (javaVersion >= toVersion( 9, 0, 0, 0 ));
 		isJava_11_orLater = (javaVersion >= toVersion( 11, 0, 0, 0 ));
 		isJava_15_orLater = (javaVersion >= toVersion( 15, 0, 0, 0 ));
+		isJava_17_orLater = (javaVersion >= toVersion( 17, 0, 0, 0 ));
 
 		// Java VMs
 		isJetBrainsJVM = System.getProperty( "java.vm.vendor", "Unknown" )

flatlaf-core/src/main/java/com/formdev/flatlaf/util/UIScale.java

@@ -43,7 +43,7 @@ import com.formdev.flatlaf.FlatSystemProperties;
  * <p>
  * Two scaling modes are supported by FlatLaf for HiDPI displays:
  *
- * <h3>1) system scaling mode</h3>
+ * <h2>1) system scaling mode</h2>
  *
  * This mode is supported since Java 9 on all platforms and in some Java 8 VMs
  * (e.g. Apple and JetBrains). The JRE determines the scale factor per-display and
@@ -54,7 +54,7 @@ import com.formdev.flatlaf.FlatSystemProperties;
  * The scale factor may be different for each connected display.
  * The scale factor may change for a window when moving the window from one display to another one.
  *
- * <h3>2) user scaling mode</h3>
+ * <h2>2) user scaling mode</h2>
  *
  * This mode is mainly for Java 8 compatibility, but is also used on Linux
  * or if the default font is changed.

flatlaf-core/src/main/java9/com/formdev/flatlaf/ui/StackUtilsImpl.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2021 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.util.function.BiPredicate;
+
+/**
+ * @author Karl Tauber
+ */
+class StackUtilsImpl
+	extends StackUtils
+{
+	@Override
+	boolean wasInvokedFromImpl( BiPredicate<String, String> predicate, int limit ) {
+		return StackWalker.getInstance().walk( stream -> {
+			if( limit > 0 )
+				stream = stream.limit( limit + 2 );
+			return stream.anyMatch( f -> {
+				return predicate.test( f.getClassName(), f.getMethodName() );
+			} );
+		} );
+	}
+}

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatDarkLaf.properties

@@ -166,7 +166,7 @@ Desktop.background = #3E434C
 
 #---- DesktopIcon ----
 
-DesktopIcon.background = lighten($Desktop.background,10%)
+DesktopIcon.background = lighten($Desktop.background,10%,derived)
 
 
 #---- InternalFrame ----

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties

@@ -374,7 +374,7 @@ MenuItem.iconTextGap = 6
 MenuItem.textAcceleratorGap = 24
 MenuItem.textNoAcceleratorGap = 6
 MenuItem.acceleratorArrowGap = 2
-MenuItem.acceleratorDelimiter = -
+MenuItem.acceleratorDelimiter = +
 [mac]MenuItem.acceleratorDelimiter = 
 
 # for MenuItem.selectionType = underline
@@ -514,6 +514,17 @@ ScrollPane.fillUpperCorner = true
 ScrollPane.smoothScrolling = true
 
 
+#---- SearchField ----
+
+SearchField.searchIconColor = fadeout(Actions.GreyInline,10%,lazy)
+SearchField.searchIconHoverColor = fadeout(Actions.GreyInline,30%,lazy)
+SearchField.searchIconPressedColor = fadeout(Actions.GreyInline,50%,lazy)
+
+SearchField.clearIconColor = fadeout(Actions.GreyInline,50%,lazy)
+SearchField.clearIconHoverColor = $SearchField.clearIconColor
+SearchField.clearIconPressedColor = fadeout(Actions.GreyInline,20%,lazy)
+
+
 #---- Separator ----
 
 Separator.height = 3
@@ -617,6 +628,7 @@ TabbedPane.closeCrossLineWidth = {float}1
 Table.rowHeight = 20
 Table.showHorizontalLines = false
 Table.showVerticalLines = false
+Table.showTrailingVerticalLine = false
 Table.consistentHomeEndKeyBehavior = true
 Table.intercellSpacing = {dimension}0,0
 Table.scrollPaneBorder = com.formdev.flatlaf.ui.FlatBorder
@@ -642,10 +654,11 @@ Table.dropLineShortColor = @dropLineShortColor
 #---- TableHeader ----
 
 TableHeader.height = 25
-TableHeader.cellBorder = 2,3,2,3
+TableHeader.cellBorder = com.formdev.flatlaf.ui.FlatTableHeaderBorder
+TableHeader.cellMargins = 2,3,2,3
 TableHeader.focusCellBackground = $TableHeader.background
 TableHeader.background = @textComponentBackground
-
+TableHeader.showTrailingVerticalLine = false
 
 #---- TextArea ----
 
@@ -751,6 +764,7 @@ ToolBar.separatorWidth = 7
 ToolBar.separatorColor = $Separator.foreground
 
 ToolBar.spacingBorder = $Button.toolbar.spacingInsets
+ToolBar.focusableButtons = false
 
 
 #---- ToolTipManager ----

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLightLaf.properties

@@ -172,7 +172,7 @@ Desktop.background = #E6EBF0
 
 #---- DesktopIcon ----
 
-DesktopIcon.background = darken($Desktop.background,10%)
+DesktopIcon.background = darken($Desktop.background,10%,derived)
 
 
 #---- HelpButton ----

flatlaf-core/src/main/resources/com/formdev/flatlaf/IntelliJTheme$ThemeLaf.properties

@@ -133,8 +133,8 @@ ToggleButton.endBackground = $ToggleButton.background
 
 [Dark_purple]Slider.focusedColor = fade($Component.focusColor,70%,derived)
 
-[Dracula]ProgressBar.selectionBackground = #fff
-[Dracula]ProgressBar.selectionForeground = #fff
+[Dracula---Zihan_Ma]ProgressBar.selectionBackground = #fff
+[Dracula---Zihan_Ma]ProgressBar.selectionForeground = #fff
 
 [Gradianto_Dark_Fuchsia]MenuItem.checkBackground = @ijMenuCheckBackgroundL10
 [Gradianto_Dark_Fuchsia]MenuItem.underlineSelectionCheckBackground = @ijMenuCheckBackgroundL10
@@ -181,7 +181,7 @@ ToggleButton.endBackground = $ToggleButton.background
 [One_Dark]MenuItem.underlineSelectionCheckBackground = @ijMenuCheckBackgroundL10
 [One_Dark]Slider.focusedColor = fade(#568af2,40%)
 
-[Solarized_Dark]Slider.focusedColor = fade($Component.focusColor,80%,derived)
+[Solarized_Dark---4lex4]Slider.focusedColor = fade($Component.focusColor,80%,derived)
 
 [vuesion-theme]MenuItem.checkBackground = @ijMenuCheckBackgroundL10
 [vuesion-theme]MenuItem.underlineSelectionCheckBackground = @ijMenuCheckBackgroundL10
@@ -198,6 +198,9 @@ ToggleButton.endBackground = $ToggleButton.background
 [dark][author-Mallowigi]MenuItem.checkBackground = @ijMenuCheckBackgroundL20
 [dark][author-Mallowigi]MenuItem.underlineSelectionCheckBackground = @ijMenuCheckBackgroundL20
 
+[Dracula---Mallowigi]ProgressBar.selectionBackground = #fff
+[Dracula---Mallowigi]ProgressBar.selectionForeground = #fff
+
 [Dracula_Contrast]ProgressBar.selectionBackground = #fff
 [Dracula_Contrast]ProgressBar.selectionForeground = #fff
 
@@ -237,14 +240,14 @@ ToggleButton.endBackground = $ToggleButton.background
 [Night_Owl_Contrast]ProgressBar.selectionBackground = #ddd
 [Night_Owl_Contrast]ProgressBar.selectionForeground = #ddd
 
-[Solarized_Dark]ProgressBar.selectionBackground = #ccc
-[Solarized_Dark]ProgressBar.selectionForeground = #ccc
+[Solarized_Dark---Mallowigi]ProgressBar.selectionBackground = #ccc
+[Solarized_Dark---Mallowigi]ProgressBar.selectionForeground = #ccc
 
-[Material_Solarized_Dark_Contrast]ProgressBar.selectionBackground = #ccc
-[Material_Solarized_Dark_Contrast]ProgressBar.selectionForeground = #ccc
+[Solarized_Dark_Contrast]ProgressBar.selectionBackground = #ccc
+[Solarized_Dark_Contrast]ProgressBar.selectionForeground = #ccc
 
-[Solarized_Light]ProgressBar.selectionBackground = #222
-[Solarized_Light]ProgressBar.selectionForeground = #fff
+[Solarized_Light---Mallowigi]ProgressBar.selectionBackground = #222
+[Solarized_Light---Mallowigi]ProgressBar.selectionForeground = #fff
 
-[Material_Solarized_Light_Contrast]ProgressBar.selectionBackground = #222
-[Material_Solarized_Light_Contrast]ProgressBar.selectionForeground = #fff
+[Solarized_Light_Contrast]ProgressBar.selectionBackground = #222
+[Solarized_Light_Contrast]ProgressBar.selectionForeground = #fff

flatlaf-core/src/test/java/com/formdev/flatlaf/ui/TestFlatComponentSizes.java

@@ -0,0 +1,203 @@
+/*
+ * Copyright 2021 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 static org.junit.jupiter.api.Assertions.assertEquals;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.Insets;
+import javax.swing.*;
+import javax.swing.border.Border;
+import javax.swing.border.LineBorder;
+import javax.swing.plaf.basic.BasicComboBoxEditor;
+import javax.swing.plaf.basic.BasicComboBoxRenderer;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+import com.formdev.flatlaf.util.UIScale;
+
+/**
+ * @author Karl Tauber
+ */
+public class TestFlatComponentSizes
+{
+	@BeforeAll
+	static void setup() {
+		TestUtils.setup( false );
+	}
+
+	@AfterAll
+	static void cleanup() {
+		TestUtils.cleanup();
+	}
+
+	static float[] factors() {
+		return TestUtils.FACTORS;
+	}
+
+	@ParameterizedTest
+	@MethodSource( "factors" )
+	void sizes( float factor ) {
+		TestUtils.scaleFont( factor );
+
+
+		// should have same default size (minimumWidth is 64)
+		JTextField textField = new JTextField();
+		JFormattedTextField formattedTextField = new JFormattedTextField();
+		JPasswordField passwordField = new JPasswordField();
+		JSpinner spinner = new JSpinner();
+
+		Dimension textFieldSize = textField.getPreferredSize();
+		assertEquals( textFieldSize, formattedTextField.getPreferredSize() );
+		assertEquals( textFieldSize, passwordField.getPreferredSize() );
+		assertEquals( textFieldSize, spinner.getPreferredSize() );
+
+
+		// should have same default size (minimumWidth is 72)
+		JButton button = new JButton( "text" );
+		JComboBox<String> comboBox = new JComboBox<>();
+		JComboBox<String> comboBoxEditable = new JComboBox<>();
+		comboBoxEditable.setEditable( true );
+
+		Dimension buttonSize = button.getPreferredSize();
+		assertEquals( buttonSize, comboBox.getPreferredSize() );
+		assertEquals( buttonSize, comboBoxEditable.getPreferredSize() );
+
+
+		// should have same height
+		JToggleButton toggleButton = new JToggleButton( "text" );
+
+		assertEquals( textFieldSize.height, button.getPreferredSize().height );
+		assertEquals( textFieldSize.height, toggleButton.getPreferredSize().height );
+
+
+		// should have same size
+		JCheckBox checkBox = new JCheckBox( "text" );
+		JRadioButton radioButton = new JRadioButton( "text" );
+		assertEquals( checkBox.getPreferredSize(), radioButton.getPreferredSize() );
+
+
+		// should have same size
+		JMenu menu = new JMenu( "text" );
+		JMenuItem menuItem = new JMenuItem( "text" );
+		JCheckBoxMenuItem checkBoxMenuItem = new JCheckBoxMenuItem( "text" );
+		JRadioButtonMenuItem radioButtonMenuItem = new JRadioButtonMenuItem( "text" );
+
+		Dimension menuSize = menu.getPreferredSize();
+		assertEquals( menuSize, menuItem.getPreferredSize() );
+		assertEquals( menuSize, checkBoxMenuItem.getPreferredSize() );
+		assertEquals( menuSize, radioButtonMenuItem.getPreferredSize() );
+
+
+		TestUtils.resetFont();
+	}
+
+	@ParameterizedTest
+	@MethodSource( "factors" )
+	void comboBox( float factor ) {
+		TestUtils.scaleFont( factor );
+
+		String[] items = { "t" };
+		JComboBox<String> comboBox = new JComboBox<>( items );
+		JComboBox<String> comboBox2 = new JComboBox<>( items );
+		JComboBox<String> comboBox3 = new JComboBox<>( items );
+		JComboBox<String> comboBox4 = new JComboBox<>( items );
+
+		applyCustomComboBoxRendererBorder( comboBox2, new LineBorder( Color.orange, UIScale.scale( 6 ) ) );
+		applyCustomComboBoxRendererBorder( comboBox3, new BorderWithIcon() );
+		applyCustomComboBoxRendererBorder( comboBox4, null );
+
+		Dimension size = comboBox.getPreferredSize();
+		assertEquals( size.width, comboBox2.getPreferredSize().width );
+		assertEquals( size.height - (2 * UIScale.scale( 2 )) + (2 * UIScale.scale( 6 )), comboBox2.getPreferredSize().height );
+		assertEquals( size, comboBox3.getPreferredSize() );
+		assertEquals( size, comboBox4.getPreferredSize() );
+
+		TestUtils.resetFont();
+	}
+
+	@SuppressWarnings( "unchecked" )
+	private void applyCustomComboBoxRendererBorder( JComboBox<String> comboBox, Border border ) {
+		BasicComboBoxRenderer customRenderer = new BasicComboBoxRenderer();
+		customRenderer.setBorder( border );
+		comboBox.setRenderer( customRenderer );
+	}
+
+	@ParameterizedTest
+	@MethodSource( "factors" )
+	void comboBoxEditable( float factor ) {
+		TestUtils.scaleFont( factor );
+
+		String[] items = { "t" };
+		JComboBox<String> comboBox = new JComboBox<>( items );
+		JComboBox<String> comboBox2 = new JComboBox<>( items );
+		JComboBox<String> comboBox3 = new JComboBox<>( items );
+		JComboBox<String> comboBox4 = new JComboBox<>( items );
+
+		comboBox.setEditable( true );
+		comboBox2.setEditable( true );
+		comboBox3.setEditable( true );
+		comboBox4.setEditable( true );
+
+		applyCustomComboBoxEditorBorder( comboBox2, new LineBorder( Color.orange, UIScale.scale( 6 ) ) );
+		applyCustomComboBoxEditorBorder( comboBox3, new BorderWithIcon() );
+		applyCustomComboBoxEditorBorder( comboBox4, null );
+
+		Dimension size = comboBox.getPreferredSize();
+		assertEquals( size.width, comboBox2.getPreferredSize().width );
+		assertEquals( size.height - (2 * UIScale.scale( 2 )) + (2 * UIScale.scale( 6 )), comboBox2.getPreferredSize().height );
+		assertEquals( size, comboBox3.getPreferredSize() );
+		assertEquals( size, comboBox4.getPreferredSize() );
+
+		TestUtils.resetFont();
+	}
+
+	private void applyCustomComboBoxEditorBorder( JComboBox<String> comboBox, Border border ) {
+		JTextField customTextField = new JTextField();
+		if( border != null )
+			customTextField.setBorder( border );
+		comboBox.setEditor( new BasicComboBoxEditor() {
+			@Override
+			protected JTextField createEditorComponent() {
+				return customTextField;
+			}
+		} );
+	}
+
+	//---- class BorderWithIcon -----------------------------------------------
+
+	private static class BorderWithIcon
+		implements Border
+	{
+		@Override
+		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+		}
+
+		@Override
+		public boolean isBorderOpaque() {
+			return false;
+		}
+
+		@Override
+		public Insets getBorderInsets( Component c ) {
+			return new Insets( 0, 0, 0, UIScale.scale( 16 ) + 4 );
+		}
+	}
+}

flatlaf-core/src/test/java/com/formdev/flatlaf/ui/TestFlatComponentSizesWithFocus.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2021 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 org.junit.jupiter.api.BeforeAll;
+
+/**
+ * @author Karl Tauber
+ */
+public class TestFlatComponentSizesWithFocus
+	extends TestFlatComponentSizes
+{
+	@BeforeAll
+	static void setup() {
+		TestUtils.setup( true );
+	}
+}

flatlaf-core/src/test/java/com/formdev/flatlaf/ui/TestUtils.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2021 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.Font;
+import javax.swing.UIManager;
+import com.formdev.flatlaf.FlatIntelliJLaf;
+import com.formdev.flatlaf.FlatLightLaf;
+import com.formdev.flatlaf.FlatSystemProperties;
+
+/**
+ * @author Karl Tauber
+ */
+public class TestUtils
+{
+	public static final float[] FACTORS = new float[] { 1f, 1.25f, 1.5f, 1.75f, 2f, 2.25f, 2.5f, 2.75f, 3f, 3.25f, 3.5f, 3.75f, 4f, 5f, 6f };
+
+	public static void setup( boolean withFocus ) {
+		System.setProperty( FlatSystemProperties.UI_SCALE, "1x" );
+		if( withFocus )
+			FlatIntelliJLaf.setup();
+		else
+			FlatLightLaf.setup();
+		System.clearProperty( FlatSystemProperties.UI_SCALE );
+	}
+
+	public static void cleanup() {
+		UIManager.put( "defaultFont", null );
+	}
+
+	public static void scaleFont( float factor ) {
+		Font defaultFont = UIManager.getLookAndFeelDefaults().getFont( "defaultFont" );
+		UIManager.put( "defaultFont", defaultFont.deriveFont( (float) Math.round( defaultFont.getSize() * factor ) ) );
+	}
+
+	public static void resetFont() {
+		UIManager.put( "defaultFont", null );
+	}
+}

flatlaf-core/svg/CapsLockIcon.svg

@@ -1,7 +1,7 @@
 <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="12" fill="#FFF"/>
+    <rect width="6" height="2" x="5" y="11.5" fill="#FFF"/>
     <path fill="#FFF" d="M2,8 L8,2 L14,8 L11,8 L11,10 L5,10 L5,8 L2,8 Z"/>
   </g>
 </svg>

flatlaf-core/svg/ClearHoveredIcon.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+  <path fill="#7F8B91" fill-opacity=".5" fill-rule="evenodd" d="M8,1.75 C11.4517797,1.75 14.25,4.54822031 14.25,8 C14.25,11.4517797 11.4517797,14.25 8,14.25 C4.54822031,14.25 1.75,11.4517797 1.75,8 C1.75,4.54822031 4.54822031,1.75 8,1.75 Z M10.5,4.5 L8,7 L5.5,4.5 L4.5,5.5 L7,8 L4.5,10.5 L5.5,11.5 L8,9 L10.5,11.5 L11.5,10.5 L9,8 L11.5,5.5 L10.5,4.5 Z"/>
+</svg>

flatlaf-core/svg/ClearIcon.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+  <path fill="none" stroke="#7F8B91" stroke-linecap="square" stroke-opacity=".5" d="M5,5 L11,11 M5,11 L11,5"/>
+</svg>

flatlaf-core/svg/SearchIcon.svg

@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+  <g fill="none" fill-opacity=".9" fill-rule="evenodd">
+    <polygon fill="#7F8B91" points="10.813 9.75 14 12.938 12.938 14 9.75 10.813"/>
+    <path fill="#7F8B91" d="M7,2 C9.76142375,2 12,4.23857625 12,7 C12,9.76142375 9.76142375,12 7,12 C4.23857625,12 2,9.76142375 2,7 C2,4.23857625 4.23857625,2 7,2 Z M7,3 C4.790861,3 3,4.790861 3,7 C3,9.209139 4.790861,11 7,11 C9.209139,11 11,9.209139 11,7 C11,4.790861 9.209139,3 7,3 Z"/>
+  </g>
+</svg>

flatlaf-core/svg/SearchWithHistoryIcon.svg

@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+  <g fill="none" fill-opacity=".9" fill-rule="evenodd">
+    <polygon fill="#7F8B91" points="8.813 9.75 12 12.938 10.938 14 7.75 10.813"/>
+    <path fill="#7F8B91" d="M5,2 C7.76142375,2 10,4.23857625 10,7 C10,9.76142375 7.76142375,12 5,12 C2.23857625,12 0,9.76142375 0,7 C0,4.23857625 2.23857625,2 5,2 Z M5,3 C2.790861,3 1,4.790861 1,7 C1,9.209139 2.790861,11 5,11 C7.209139,11 9,9.209139 9,7 C9,4.790861 7.209139,3 5,3 Z"/>
+    <polygon fill="#7F8B91" points="11 7 16 7 13.5 10"/>
+  </g>
+</svg>

flatlaf-demo/build.gradle.kts

@@ -18,18 +18,11 @@ plugins {
 	`java-library`
 }
 
-repositories {
-	maven {
-		// for using MigLayout snapshot
-		url = uri( "https://oss.sonatype.org/content/repositories/snapshots/" )
-	}
-}
-
 dependencies {
 	implementation( project( ":flatlaf-core" ) )
 	implementation( project( ":flatlaf-extras" ) )
 	implementation( project( ":flatlaf-intellij-themes" ) )
-	implementation( "com.miglayout:miglayout-swing:5.3-SNAPSHOT" )
+	implementation( "com.miglayout:miglayout-swing:5.3" )
 	implementation( "com.jgoodies:jgoodies-forms:1.9.0" )
 //	implementation( project( ":flatlaf-natives-jna" ) )
 }

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/ControlBar.java

@@ -28,6 +28,7 @@ import javax.swing.plaf.metal.MetalLookAndFeel;
 import javax.swing.plaf.nimbus.NimbusLookAndFeel;
 import com.formdev.flatlaf.*;
 import com.formdev.flatlaf.extras.FlatAnimatedLafChange;
+import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.SystemInfo;
 import com.formdev.flatlaf.util.UIScale;
 import net.miginfocom.layout.ConstraintParser;
@@ -240,7 +241,7 @@ class ControlBar
 					frame.setSize( Math.max( prefSize.width, width ), Math.max( prefSize.height, height ) );
 
 			} catch( Exception ex ) {
-				ex.printStackTrace();
+				LoggingFacade.INSTANCE.logSevere( null, ex );
 			}
 		} );
 	}

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/DemoFrame.java

@@ -18,6 +18,10 @@ package com.formdev.flatlaf.demo;
 
 import java.awt.*;
 import java.awt.event.*;
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.time.Year;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.prefs.Preferences;
@@ -34,8 +38,10 @@ import com.formdev.flatlaf.extras.FlatUIDefaultsInspector;
 import com.formdev.flatlaf.extras.components.FlatButton;
 import com.formdev.flatlaf.extras.components.FlatButton.ButtonType;
 import com.formdev.flatlaf.extras.FlatSVGUtils;
+import com.formdev.flatlaf.ui.FlatUIUtils;
 import com.formdev.flatlaf.ui.JBRCustomDecorations;
 import com.formdev.flatlaf.util.SystemInfo;
+import com.formdev.flatlaf.util.UIScale;
 import net.miginfocom.layout.ConstraintParser;
 import net.miginfocom.layout.LC;
 import net.miginfocom.layout.UnitValue;
@@ -127,7 +133,36 @@ class DemoFrame
 	}
 
 	private void aboutActionPerformed() {
-		JOptionPane.showMessageDialog( this, "FlatLaf Demo", "About", JOptionPane.PLAIN_MESSAGE );
+		JLabel titleLabel = new JLabel( "FlatLaf Demo" );
+		Font titleFont = titleLabel.getFont();
+		titleLabel.setFont( titleFont.deriveFont( (float) titleFont.getSize() + UIScale.scale( 6 ) ) );
+
+		String link = "https://www.formdev.com/flatlaf/";
+		JLabel linkLabel = new JLabel( "<html><a href=\"#\">" + link + "</a></html>" );
+		linkLabel.setCursor( Cursor.getPredefinedCursor( Cursor.HAND_CURSOR ) );
+		linkLabel.addMouseListener( new MouseAdapter() {
+			@Override
+			public void mouseClicked( MouseEvent e ) {
+				try {
+					Desktop.getDesktop().browse( new URI( link ) );
+				} catch( IOException | URISyntaxException ex ) {
+					JOptionPane.showMessageDialog( linkLabel,
+						"Failed to open '" + link + "' in browser.",
+						"About", JOptionPane.PLAIN_MESSAGE );
+				}
+			}
+		} );
+
+
+		JOptionPane.showMessageDialog( this,
+			new Object[] {
+				titleLabel,
+				"Demonstrates FlatLaf Swing look and feel",
+				" ",
+				"Copyright 2019-" + Year.now() + " FormDev Software GmbH",
+				linkLabel,
+			},
+			"About", JOptionPane.PLAIN_MESSAGE );
 	}
 
 	private void selectedTabChanged() {
@@ -185,6 +220,8 @@ class DemoFrame
 
 		Font font = UIManager.getFont( "defaultFont" );
 		Font newFont = StyleContext.getDefaultStyleContext().getFont( fontFamily, font.getStyle(), font.getSize() );
+		// StyleContext.getFont() may return a UIResource, which would cause loosing user scale factor on Windows
+		newFont = FlatUIUtils.nonUIResource( newFont );
 		UIManager.put( "defaultFont", newFont );
 
 		FlatLaf.updateUI();

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/DemoPrefs.java

@@ -25,6 +25,7 @@ import com.formdev.flatlaf.FlatLightLaf;
 import com.formdev.flatlaf.FlatPropertiesLaf;
 import com.formdev.flatlaf.IntelliJTheme;
 import com.formdev.flatlaf.demo.intellijthemes.IJThemesPanel;
+import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.StringUtils;
 
 /**
@@ -50,7 +51,7 @@ public class DemoPrefs
 		state = Preferences.userRoot().node( rootPath );
 	}
 
-	public static void initLaf( String[] args ) {
+	public static void setupLaf( String[] args ) {
 		// set look and feel
 		try {
 			if( args.length > 0 )
@@ -60,11 +61,11 @@ public class DemoPrefs
 				if( IntelliJTheme.ThemeLaf.class.getName().equals( lafClassName ) ) {
 					String theme = state.get( KEY_LAF_THEME, "" );
 					if( theme.startsWith( RESOURCE_PREFIX ) )
-						IntelliJTheme.install( IJThemesPanel.class.getResourceAsStream( IJThemesPanel.THEMES_PACKAGE + theme.substring( RESOURCE_PREFIX.length() ) ) );
+						IntelliJTheme.setup( IJThemesPanel.class.getResourceAsStream( IJThemesPanel.THEMES_PACKAGE + theme.substring( RESOURCE_PREFIX.length() ) ) );
 					else if( theme.startsWith( FILE_PREFIX ) )
-					    FlatLaf.install( IntelliJTheme.createLaf( new FileInputStream( theme.substring( FILE_PREFIX.length() ) ) ) );
+					    FlatLaf.setup( IntelliJTheme.createLaf( new FileInputStream( theme.substring( FILE_PREFIX.length() ) ) ) );
 					else
-						FlatLightLaf.install();
+						FlatLightLaf.setup();
 
 					if( !theme.isEmpty() )
 						UIManager.getLookAndFeelDefaults().put( THEME_UI_KEY, theme );
@@ -73,9 +74,9 @@ public class DemoPrefs
 					if( theme.startsWith( FILE_PREFIX ) ) {
 						File themeFile = new File( theme.substring( FILE_PREFIX.length() ) );
 						String themeName = StringUtils.removeTrailing( themeFile.getName(), ".properties" );
-						FlatLaf.install( new FlatPropertiesLaf( themeName, themeFile ) );
+						FlatLaf.setup( new FlatPropertiesLaf( themeName, themeFile ) );
 					} else
-						FlatLightLaf.install();
+						FlatLightLaf.setup();
 
 					if( !theme.isEmpty() )
 						UIManager.getLookAndFeelDefaults().put( THEME_UI_KEY, theme );
@@ -83,10 +84,10 @@ public class DemoPrefs
 					UIManager.setLookAndFeel( lafClassName );
 			}
 		} catch( Throwable ex ) {
-			ex.printStackTrace();
+			LoggingFacade.INSTANCE.logSevere( null, ex );
 
 			// fallback
-			FlatLightLaf.install();
+			FlatLightLaf.setup();
 		}
 
 		// remember active look and feel

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/FlatLafDemo.java

@@ -48,7 +48,7 @@ public class FlatLafDemo
 			FlatLaf.registerCustomDefaultsSource( "com.formdev.flatlaf.demo" );
 
 			// set look and feel
-			DemoPrefs.initLaf( args );
+			DemoPrefs.setupLaf( args );
 
 			// install inspectors
 			FlatInspector.install( "ctrl shift alt X" );

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/extras/ExtrasPanel.java

@@ -18,8 +18,13 @@ package com.formdev.flatlaf.demo.extras;
 
 import javax.swing.*;
 import com.formdev.flatlaf.extras.*;
+import com.formdev.flatlaf.extras.FlatSVGIcon.ColorFilter;
 import com.formdev.flatlaf.extras.components.FlatTriStateCheckBox;
+import com.formdev.flatlaf.util.HSLColor;
 import net.miginfocom.swing.*;
+import java.awt.*;
+import java.awt.event.HierarchyEvent;
+import java.util.function.Function;
 
 /**
  * @author Karl Tauber
@@ -27,6 +32,9 @@ import net.miginfocom.swing.*;
 public class ExtrasPanel
 	extends JPanel
 {
+	private Timer rainbowIconTimer;
+	private int rainbowCounter = 0;
+
 	public ExtrasPanel() {
 		initComponents();
 
@@ -50,6 +58,34 @@ public class ExtrasPanel
 		addSVGIcon( "errorDialog.svg" );
 		addSVGIcon( "informationDialog.svg" );
 		addSVGIcon( "warningDialog.svg" );
+
+		initRainbowIcon();
+	}
+
+	private void initRainbowIcon() {
+		FlatSVGIcon icon = new FlatSVGIcon( "com/formdev/flatlaf/demo/extras/svg/informationDialog.svg" );
+		icon.setColorFilter( new ColorFilter( color -> {
+			rainbowCounter += 1;
+			rainbowCounter %= 255;
+			return Color.getHSBColor( rainbowCounter / 255f, 1, 1 );
+		} ) );
+		rainbowIcon.setIcon( icon );
+
+		rainbowIconTimer = new Timer( 30, e -> {
+			rainbowIcon.repaint();
+		} );
+
+		// start rainbow timer only if panel is shown ("Extras" tab is active)
+		addHierarchyListener( e -> {
+			if( e.getID() == HierarchyEvent.HIERARCHY_CHANGED &&
+				(e.getChangeFlags() & HierarchyEvent.SHOWING_CHANGED) != 0 )
+			{
+				if( isShowing() )
+					rainbowIconTimer.start();
+				else
+					rainbowIconTimer.stop();
+			}
+		} );
 	}
 
 	private void addSVGIcon( String name ) {
@@ -60,6 +96,36 @@ public class ExtrasPanel
 		triStateLabel1.setText( triStateCheckBox1.getState().toString() );
 	}
 
+	private void redChanged() {
+		brighterToggleButton.setSelected( false );
+
+		Function<Color, Color> mapper = null;
+		if( redToggleButton.isSelected() ) {
+			float[] redHSL = HSLColor.fromRGB( Color.red );
+			mapper = color -> {
+				float[] hsl = HSLColor.fromRGB( color );
+				return HSLColor.toRGB( redHSL[0], 70, hsl[2] );
+			};
+		}
+		FlatSVGIcon.ColorFilter.getInstance().setMapper( mapper );
+
+		// repaint whole application window because global color filter also affects
+		// icons in menubar, toolbar, etc.
+		SwingUtilities.windowForComponent( this ).repaint();
+	}
+
+	private void brighterChanged() {
+		redToggleButton.setSelected( false );
+
+		FlatSVGIcon.ColorFilter.getInstance().setMapper( brighterToggleButton.isSelected()
+			? color -> color.brighter().brighter()
+			: null );
+
+		// repaint whole application window because global color filter also affects
+		// icons in menubar, toolbar, etc.
+		SwingUtilities.windowForComponent( this ).repaint();
+	}
+
 	private void initComponents() {
 		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
 		label4 = new JLabel();
@@ -69,6 +135,13 @@ public class ExtrasPanel
 		label2 = new JLabel();
 		svgIconsPanel = new JPanel();
 		label3 = new JLabel();
+		separator1 = new JSeparator();
+		label5 = new JLabel();
+		label6 = new JLabel();
+		rainbowIcon = new JLabel();
+		label7 = new JLabel();
+		redToggleButton = new JToggleButton();
+		brighterToggleButton = new JToggleButton();
 
 		//======== this ========
 		setLayout(new MigLayout(
@@ -81,6 +154,10 @@ public class ExtrasPanel
 			"[]para" +
 			"[]" +
 			"[]" +
+			"[]" +
+			"[]" +
+			"[]" +
+			"[]" +
 			"[]"));
 
 		//---- label4 ----
@@ -119,6 +196,30 @@ public class ExtrasPanel
 		//---- label3 ----
 		label3.setText("The icons may change colors when switching to another theme.");
 		add(label3, "cell 1 3 2 1");
+		add(separator1, "cell 1 4 2 1,growx");
+
+		//---- label5 ----
+		label5.setText("Color filters can be also applied to icons. Globally or for each instance.");
+		add(label5, "cell 1 5 2 1");
+
+		//---- label6 ----
+		label6.setText("Rainbow color filter");
+		add(label6, "cell 1 6 2 1");
+		add(rainbowIcon, "cell 1 6 2 1");
+
+		//---- label7 ----
+		label7.setText("Global icon color filter");
+		add(label7, "cell 1 7 2 1");
+
+		//---- redToggleButton ----
+		redToggleButton.setText("Toggle RED");
+		redToggleButton.addActionListener(e -> redChanged());
+		add(redToggleButton, "cell 1 7 2 1");
+
+		//---- brighterToggleButton ----
+		brighterToggleButton.setText("Toggle brighter");
+		brighterToggleButton.addActionListener(e -> brighterChanged());
+		add(brighterToggleButton, "cell 1 7 2 1");
 		// JFormDesigner - End of component initialization  //GEN-END:initComponents
 	}
 
@@ -130,5 +231,12 @@ public class ExtrasPanel
 	private JLabel label2;
 	private JPanel svgIconsPanel;
 	private JLabel label3;
+	private JSeparator separator1;
+	private JLabel label5;
+	private JLabel label6;
+	private JLabel rainbowIcon;
+	private JLabel label7;
+	private JToggleButton redToggleButton;
+	private JToggleButton brighterToggleButton;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables
 }

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/extras/ExtrasPanel.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.2.0.298" Java: "14" encoding: "UTF-8"
+JFDML JFormDesigner: "7.0.3.1.342" Java: "16" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -6,7 +6,7 @@ new FormModel {
 		add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 			"$layoutConstraints": "insets dialog,hidemode 3"
 			"$columnConstraints": "[][][left]"
-			"$rowConstraints": "[]para[][][]"
+			"$rowConstraints": "[]para[][][][][][][]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JLabel" ) {
@@ -56,6 +56,48 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 3 2 1"
 			} )
+			add( new FormComponent( "javax.swing.JSeparator" ) {
+				name: "separator1"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 4 2 1,growx"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label5"
+				"text": "Color filters can be also applied to icons. Globally or for each instance."
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 5 2 1"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label6"
+				"text": "Rainbow color filter"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 6 2 1"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "rainbowIcon"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 6 2 1"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "label7"
+				"text": "Global icon color filter"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 7 2 1"
+			} )
+			add( new FormComponent( "javax.swing.JToggleButton" ) {
+				name: "redToggleButton"
+				"text": "Toggle RED"
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "redChanged", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 7 2 1"
+			} )
+			add( new FormComponent( "javax.swing.JToggleButton" ) {
+				name: "brighterToggleButton"
+				"text": "Toggle brighter"
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "brighterChanged", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 7 2 1"
+			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
 			"size": new java.awt.Dimension( 500, 300 )

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/intellijthemes/IJThemesClassGenerator.java

@@ -22,6 +22,7 @@ import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardOpenOption;
+import com.formdev.flatlaf.util.LoggingFacade;
 
 /**
  * This tool creates look and feel classes for all themes listed in themes.json.
@@ -120,7 +121,7 @@ public class IJThemesClassGenerator
 			Files.write( out, content.getBytes( StandardCharsets.ISO_8859_1 ),
 				StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING );
 		} catch( IOException ex ) {
-			ex.printStackTrace();
+			LoggingFacade.INSTANCE.logSevere( null, ex );
 		}
 	}
 
@@ -160,9 +161,9 @@ public class IJThemesClassGenerator
 		"{\n" +
 		"	public static final String NAME = \"${themeName}\";\n" +
 		"\n" +
-		"	public static boolean install() {\n" +
+		"	public static boolean setup() {\n" +
 		"		try {\n" +
-		"			return install( new ${themeClass}() );\n" +
+		"			return setup( new ${themeClass}() );\n" +
 		"		} catch( RuntimeException ex ) {\n" +
 		"			return false;\n" +
 		"		}\n" +

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/intellijthemes/IJThemesDuplicateNameChecker.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2021 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.demo.intellijthemes;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.nio.charset.StandardCharsets;
+import java.util.HashSet;
+import java.util.Map;
+import com.formdev.flatlaf.json.Json;
+import com.formdev.flatlaf.json.ParseException;
+
+/**
+ * This tool checks whether there are duplicate name fields in all theme .json files.
+ *
+ * This is important for following file, where the name is used for theme specific UI defaults:
+ *   flatlaf-core/src/main/resources/com/formdev/flatlaf/IntelliJTheme$ThemeLaf.properties
+ *
+ * @author Karl Tauber
+ */
+public class IJThemesDuplicateNameChecker
+{
+	public static void main( String[] args ) {
+		IJThemesManager themesManager = new IJThemesManager();
+		themesManager.loadBundledThemes();
+
+		HashSet<String> names = new HashSet<>();
+		for( IJThemeInfo ti : themesManager.bundledThemes ) {
+			if( ti.sourceCodeUrl == null || ti.sourceCodePath == null )
+				continue;
+
+			String jsonPath = "../flatlaf-intellij-themes/src/main/resources" + IJThemesPanel.THEMES_PACKAGE + ti.resourceName;
+			String name;
+			try {
+				name = readNameFromJson( jsonPath );
+			} catch( IOException ex ) {
+				System.err.println( "Failed to read '" + jsonPath + "'" );
+				continue;
+			}
+
+			if( names.contains( name ) )
+				System.out.println( "Duplicate name '" + name + "'" );
+			names.add( name );
+		}
+	}
+
+	private static String readNameFromJson( String jsonPath ) throws IOException {
+		try( Reader reader = new InputStreamReader( new FileInputStream( jsonPath ), StandardCharsets.UTF_8 ) ) {
+			@SuppressWarnings( "unchecked" )
+			Map<String, Object> json = (Map<String, Object>) Json.parse( reader );
+			return (String) json.get( "name" );
+		} catch( ParseException ex ) {
+			throw new IOException( ex.getMessage(), ex );
+		}
+	}
+}

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/intellijthemes/IJThemesManager.java

@@ -26,6 +26,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import com.formdev.flatlaf.json.Json;
+import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.StringUtils;
 
 /**
@@ -46,7 +47,7 @@ class IJThemesManager
 	    try( Reader reader = new InputStreamReader( getClass().getResourceAsStream( "themes.json" ), StandardCharsets.UTF_8 ) ) {
 	    		json = (Map<String, Object>) Json.parse( reader );
 		} catch( IOException ex ) {
-			ex.printStackTrace();
+			LoggingFacade.INSTANCE.logSevere( null, ex );
 			return;
 		}
 

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/intellijthemes/IJThemesPanel.java

@@ -52,6 +52,7 @@ import com.formdev.flatlaf.IntelliJTheme;
 import com.formdev.flatlaf.demo.DemoPrefs;
 import com.formdev.flatlaf.extras.FlatAnimatedLafChange;
 import com.formdev.flatlaf.extras.FlatSVGIcon;
+import com.formdev.flatlaf.util.LoggingFacade;
 import com.formdev.flatlaf.util.StringUtils;
 import net.miginfocom.swing.*;
 
@@ -259,7 +260,7 @@ public class IJThemesPanel
 			try {
 				UIManager.setLookAndFeel( themeInfo.lafClassName );
 			} catch( Exception ex ) {
-				ex.printStackTrace();
+				LoggingFacade.INSTANCE.logSevere( null, ex );
 				showInformationDialog( "Failed to create '" + themeInfo.lafClassName + "'.", ex );
 			}
 		} else if( themeInfo.themeFile != null ) {
@@ -267,19 +268,19 @@ public class IJThemesPanel
 
 			try {
 				if( themeInfo.themeFile.getName().endsWith( ".properties" ) ) {
-				    FlatLaf.install( new FlatPropertiesLaf( themeInfo.name, themeInfo.themeFile ) );
+				    FlatLaf.setup( new FlatPropertiesLaf( themeInfo.name, themeInfo.themeFile ) );
 				} else
-				    FlatLaf.install( IntelliJTheme.createLaf( new FileInputStream( themeInfo.themeFile ) ) );
+				    FlatLaf.setup( IntelliJTheme.createLaf( new FileInputStream( themeInfo.themeFile ) ) );
 
 				DemoPrefs.getState().put( DemoPrefs.KEY_LAF_THEME, DemoPrefs.FILE_PREFIX + themeInfo.themeFile );
 			} catch( Exception ex ) {
-				ex.printStackTrace();
+				LoggingFacade.INSTANCE.logSevere( null, ex );
 				showInformationDialog( "Failed to load '" + themeInfo.themeFile + "'.", ex );
 			}
 		} else {
 			FlatAnimatedLafChange.showSnapshot();
 
-			IntelliJTheme.install( getClass().getResourceAsStream( THEMES_PACKAGE + themeInfo.resourceName ) );
+			IntelliJTheme.setup( getClass().getResourceAsStream( THEMES_PACKAGE + themeInfo.resourceName ) );
 		    DemoPrefs.getState().put( DemoPrefs.KEY_LAF_THEME, DemoPrefs.RESOURCE_PREFIX + themeInfo.resourceName );
 		}
 

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/intellijthemes/IJThemesUpdater.java

@@ -23,6 +23,7 @@ import java.net.URLConnection;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
+import com.formdev.flatlaf.util.LoggingFacade;
 
 /**
  * This tool updates all IntelliJ themes listed in themes.json by downloading
@@ -61,7 +62,7 @@ public class IJThemesUpdater
 			URLConnection con = url.openConnection();
 			Files.copy( con.getInputStream(), out, StandardCopyOption.REPLACE_EXISTING );
 		} catch( IOException ex ) {
-			ex.printStackTrace();
+			LoggingFacade.INSTANCE.logSevere( null, ex );
 		}
 	}
 }

flatlaf-demo/src/main/resources/com/formdev/flatlaf/demo/extras/svg/actions/colors.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
   <g fill="none" fill-rule="evenodd" transform="translate(2 2)">
     <rect width="5.5" height="5.5" fill="#59A869"/>

flatlaf-demo/src/main/resources/com/formdev/flatlaf/demo/extras/svg/actions/copy.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <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="M11,3 L4,3 L4,11 L2,11 L2,1 L11,1 L11,3 Z"/>

flatlaf-demo/src/main/resources/com/formdev/flatlaf/demo/extras/svg/actions/execute.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
   <polygon fill="#59A869" fill-rule="evenodd" points="4 2 14 8 4 14"/>
 </svg>

flatlaf-demo/src/main/resources/com/formdev/flatlaf/demo/extras/svg/actions/intentionBulb.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <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="6" height="1" x="5" y="12" fill="#6E6E6E"/>

flatlaf-demo/src/main/resources/com/formdev/flatlaf/demo/extras/svg/actions/quickfixOffBulb.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <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="6" height="1" x="5" y="12" fill="#6E6E6E"/>