| /* |
| * (c) Copyright IBM Corp. 2000, 2001. |
| * All Rights Reserved. |
| */ |
| 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; |
| private boolean fLeft= true; |
| |
| public DiffImage(Image base, ImageDescriptor overlay, int w) { |
| fBaseImage= base; |
| fOverlayImage= overlay; |
| fWidth= w; |
| } |
| |
| public DiffImage(Image base, ImageDescriptor overlay, int w, boolean onLeft) { |
| fBaseImage= base; |
| fOverlayImage= overlay; |
| fWidth= w; |
| fLeft= onLeft; |
| } |
| |
| protected Point getSize() { |
| return new Point(fWidth, HEIGHT); |
| } |
| |
| protected void drawCompositeImage(int width, int height) { |
| if (fLeft) { |
| if (fBaseImage != null) { |
| ImageData base= fBaseImage.getImageData(); |
| if (base == null) |
| base= DEFAULT_IMAGE_DATA; |
| drawImage(base, fWidth - base.width, 0); |
| } |
| |
| if (fOverlayImage != null) { |
| ImageData overlay= fOverlayImage.getImageData(); |
| if (overlay == null) |
| overlay= DEFAULT_IMAGE_DATA; |
| drawImage(overlay, 0, (HEIGHT - overlay.height) / 2); |
| } |
| } else { |
| if (fBaseImage != null) { |
| ImageData base= fBaseImage.getImageData(); |
| if (base == null) |
| base= DEFAULT_IMAGE_DATA; |
| drawImage(base, 0, 0); |
| } |
| |
| if (fOverlayImage != null) { |
| ImageData overlay= fOverlayImage.getImageData(); |
| if (overlay == null) |
| overlay= DEFAULT_IMAGE_DATA; |
| drawImage(overlay, fWidth - overlay.width, (HEIGHT - overlay.height) / 2); |
| } |
| } |
| } |
| } |