src/macosx/classes/sun/lwawt/macosx/CImage.java

@@ -30,24 +30,26 @@
 import java.awt.image.*;
 
 import java.util.Arrays;
 import java.util.List;
 import sun.awt.image.MultiResolutionImage;
+import sun.awt.image.MultiResolutionBufferedImage;
 
 import sun.awt.image.SunWritableRaster;
 
 public class CImage extends CFRetainedResource {
     private static native long nativeCreateNSImageFromArray(int[] buffer, int w, int h);
     private static native long nativeCreateNSImageFromArrays(int[][] buffers, int w[], int h[]);
     private static native long nativeCreateNSImageFromFileContents(String file);
     private static native long nativeCreateNSImageOfFileFromLaunchServices(String file);
     private static native long nativeCreateNSImageFromImageName(String name);
     private static native long nativeCreateNSImageFromIconSelector(int selector);
-    private static native void nativeCopyNSImageIntoArray(long image, int[] buffer, int w, int h);
+    private static native void nativeCopyNSImageIntoArray(long image, int[] buffer, int sw, int sh, int dw, int dh);
     private static native Dimension2D nativeGetNSImageSize(long image);
     private static native void nativeSetNSImageSize(long image, double w, double h);
     private static native void nativeResizeNSImageRepresentations(long image, double w, double h);
+    private static native Dimension2D[] nativeGetNSImageRepresentationSizes(long image, double w, double h);
 
     static Creator creator = new Creator();
     static Creator getCreator() {
         return creator;
     }

@@ -208,22 +210,47 @@
 
     CImage(long nsImagePtr) {
         super(nsImagePtr, true);
     }
 
-    /** @return A BufferedImage created from nsImagePtr, or null. */
-    public BufferedImage toImage() {
+    /** @return A MultiResolution image created from nsImagePtr, or null. */
+    private BufferedImage toImage() {
         if (ptr == 0) return null;
 
         final Dimension2D size = nativeGetNSImageSize(ptr);
         final int w = (int)size.getWidth();
         final int h = (int)size.getHeight();
 
-        final BufferedImage bimg = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB_PRE);
+        Dimension2D[] sizes
+                = nativeGetNSImageRepresentationSizes(ptr,
+                        size.getWidth(), size.getHeight());
+
+        if (sizes == null || sizes.length < 2) {
+            return toImage(w, h, w, h);
+        }
+
+        BufferedImage[] images = new BufferedImage[sizes.length];
+        int currentImageIndex = 0;
+
+        for (int i = 0; i < sizes.length; i++) {
+            int imageRepWidth = (int) sizes[i].getWidth();
+            int imageRepHeight = (int) sizes[i].getHeight();
+
+            if(imageRepHeight <= w && imageRepHeight <= h){
+                currentImageIndex = i;
+            }
+            images[i] = toImage(w, h, imageRepWidth, imageRepHeight);
+        }
+        return new MultiResolutionBufferedImage(BufferedImage.TYPE_INT_ARGB_PRE,
+                currentImageIndex, images);
+    }
+
+    private BufferedImage toImage(int srcWidth, int srcHeight, int dstWidth, int dstHeight) {
+        final BufferedImage bimg = new BufferedImage(dstWidth, dstHeight, BufferedImage.TYPE_INT_ARGB_PRE);
         final DataBufferInt dbi = (DataBufferInt)bimg.getRaster().getDataBuffer();
         final int[] buffer = SunWritableRaster.stealData(dbi, 0);
-        nativeCopyNSImageIntoArray(ptr, buffer, w, h);
+        nativeCopyNSImageIntoArray(ptr, buffer, srcWidth, srcHeight, dstWidth, dstHeight);
         SunWritableRaster.markDirty(dbi);
         return bimg;
     }
 
     /** If nsImagePtr != 0 then scale this NSImage. @return *this* */