Linux: use X11 window manager events to move window and to show window menu (right-click on window title bar), if custom window decorations are enabled (issue #482)

.github/workflows/natives.yml

@@ -9,20 +9,26 @@ on:
         tags:
             - '[0-9]*'
         paths:
-            - 'flatlaf-natives/flatlaf-natives-windows/**'
+            - 'flatlaf-natives/**'
             - '.github/workflows/natives.yml'
             - 'gradle/wrapper/gradle-wrapper.properties'
     pull_request:
         branches:
             - '*'
         paths:
-            - 'flatlaf-natives/flatlaf-natives-windows/**'
+            - 'flatlaf-natives/**'
             - '.github/workflows/natives.yml'
             - 'gradle/wrapper/gradle-wrapper.properties'
 
 jobs:
-    Windows:
-        runs-on: windows-latest
+    Natives:
+        strategy:
+            matrix:
+                os:
+                    - windows
+                    - ubuntu
+
+        runs-on: ${{ matrix.os }}-latest
 
         steps:
             - uses: actions/checkout@v3
@@ -37,14 +43,14 @@ jobs:
                   cache: gradle
 
             - name: Build with Gradle
-              # --no-daemon is necessary on Windows otherwise caching Gradle would fail with: 
+              # --no-daemon is necessary on Windows otherwise caching Gradle would fail with:
               #   tar.exe: Couldn't open ~/.gradle/caches/modules-2/modules-2.lock: Permission denied
-              run: ./gradlew :flatlaf-natives-windows:build-natives --no-daemon
+              run: ./gradlew build-natives --no-daemon
 
             - name: Upload artifacts
               uses: actions/upload-artifact@v3
               with:
-                  name: FlatLaf-natives-windows-build-artifacts
+                  name: FlatLaf-natives-build-artifacts-${{ matrix.os }}
                   path: |
                       flatlaf-core/src/main/resources/com/formdev/flatlaf/natives
-                      flatlaf-natives/flatlaf-natives-windows/build
+                      flatlaf-natives/flatlaf-natives-*/build