| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| 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); |
| } |
| } |
| } |
| } |