Implemented getColorModel() and createAcceleratedImage()

This is enough to make J2Ddemo and StylePad work
openjdk · Nov 11, 2022 · f520a5f · f520a5f
1 parent e29f9b1
commit f520a5f
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Showing 2 changed files with 19 additions and 12 deletions.
diff --git a/src/java.desktop/unix/classes/sun/awt/wl/WLComponentPeer.java b/src/java.desktop/unix/classes/sun/awt/wl/WLComponentPeer.java
@@ -483,7 +483,7 @@ void setMaximumSizeTo(Dimension maxSize) {
     @Override
     public ColorModel getColorModel() {
         if (graphicsConfig != null) {
-            return graphicsConfig.getColorModel ();
+            return graphicsConfig.getColorModel();
         }
         else {
             return Toolkit.getDefaultToolkit().getColorModel();
@@ -539,7 +539,7 @@ public void updateCursorImmediately() {
 
     @Override
     public Image createImage(int width, int height) {
-        throw new UnsupportedOperationException();
+        return graphicsConfig.createAcceleratedImage(target, width, height);
     }
 
     @Override

diff --git a/src/java.desktop/unix/classes/sun/awt/wl/WLGraphicsConfig.java b/src/java.desktop/unix/classes/sun/awt/wl/WLGraphicsConfig.java
@@ -30,6 +30,9 @@
 import java.awt.geom.AffineTransform;
 import java.awt.image.ColorModel;
 import java.awt.image.DirectColorModel;
+import java.awt.image.WritableRaster;
+
+import sun.awt.image.OffScreenImage;
 import sun.java2d.SurfaceData;
 import sun.java2d.loops.SurfaceType;
 import sun.java2d.wl.WLSurfaceData;
@@ -54,16 +57,20 @@ public ColorModel getColorModel() {
 
     @Override
     public ColorModel getColorModel(int transparency) {
-        switch (transparency) {
-            case Transparency.OPAQUE:
-                return getColorModel();
-            case Transparency.BITMASK:
-                throw new UnsupportedOperationException("Transparency BITMASK not supported");
-            case Transparency.TRANSLUCENT:
-                throw new UnsupportedOperationException("Transparency TRANSLUCENT not supported");
-            default:
-                return null;
-        }
+        return switch (transparency) {
+            case Transparency.OPAQUE -> getColorModel();
+            case Transparency.BITMASK -> new DirectColorModel(25, 0xff0000, 0xff00, 0xff, 0x1000000);
+            case Transparency.TRANSLUCENT -> new DirectColorModel(32, 0xff0000, 0xff00, 0xff, 0xff000000);
+            default -> null;
+        };
+    }
+
+    public Image createAcceleratedImage(Component target,
+                                        int width, int height)
+    {
+        ColorModel model = getColorModel(Transparency.OPAQUE);
+        WritableRaster raster = model.createCompatibleWritableRaster(width, height);
+        return new OffScreenImage(target, model, raster, model.isAlphaPremultiplied());
     }
 
     @Override