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/*
* Licensed Materials - Property of IBM,
* WebSphere Studio Workbench
* (c) Copyright IBM Corp 2000, 2001
*/
package org.eclipse.compare.internal;
import org.eclipse.swt.graphics.*;
import org.eclipse.jface.resource.CompositeImageDescriptor;
import org.eclipse.jface.resource.ImageDescriptor;
/**
* Combines an image with an overlay.
*/
public class DiffImage extends CompositeImageDescriptor {
static final int HEIGHT= 16;
private Image fBaseImage;
private ImageDescriptor fOverlayImage;
private int fWidth;
public DiffImage(Image base, ImageDescriptor overlay, int w) {
fBaseImage= base;
fOverlayImage= overlay;
fWidth= w;
}
protected Point getSize() {
return new Point(fWidth, HEIGHT);
}
protected void drawCompositeImage(int width, int height) {
if (fBaseImage != null) {
ImageData base= fBaseImage.getImageData();
if (base == null)
base= DEFAULT_IMAGE_DATA;
try {
drawImage(base, fWidth - base.width, 0);
} catch (ArrayIndexOutOfBoundsException ex) {
// workaround for PR 1GCQKWP
}
}
if (fOverlayImage != null) {
ImageData dir= fOverlayImage.getImageData();
if (dir == null)
dir= DEFAULT_IMAGE_DATA;
drawImage(dir, 0, (HEIGHT - dir.height) / 2);
}
}
}
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