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/*******************************************************************************
* 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.team.internal.ui;
import java.util.Arrays;
import org.eclipse.jface.resource.CompositeImageDescriptor;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.*;
/**
* An OverlayIcon consists of a main icon and several adornments.
*/
public class OverlayIcon extends CompositeImageDescriptor {
// the base image
private Image base;
// the base as a descriptor
private ImageDescriptor descriptorBase;
// the overlay images
private ImageDescriptor[] overlays;
// the size
private Point size;
// the locations
private int[] locations;
public static final int TOP_LEFT = 0;
public static final int TOP_RIGHT = 1;
public static final int BOTTOM_LEFT = 2;
public static final int BOTTOM_RIGHT = 3;
public static final int DEFAULT_WIDTH= 22;
public static final int DEFAULT_HEIGHT= 16;
/**
* OverlayIcon constructor.
*
* @param base the base image
* @param overlays the overlay images
* @param locations the location of each image
* @param size the size
*/
public OverlayIcon(Image base, ImageDescriptor[] overlays, int[] locations, Point size) {
this.base = base;
this.descriptorBase = null;
this.overlays = overlays;
this.locations = locations;
this.size = size;
}
/**
* OverlayIcon constructor.
*
* @param base the base image
* @param overlays the overlay images
* @param locations the location of each image
* @param size the size
*/
public OverlayIcon(ImageDescriptor descriptorBase, ImageDescriptor[] overlays, int[] locations, Point size) {
this.descriptorBase = descriptorBase;
this.base = null;
this.overlays = overlays;
this.locations = locations;
this.size = size;
}
protected void drawOverlays(ImageDescriptor[] overlays, int[] locations) {
Point size = getSize();
for (int i = 0; i < overlays.length; i++) {
ImageDescriptor overlay = overlays[i];
ImageData overlayData = overlay.getImageData();
switch (locations[i]) {
case TOP_LEFT:
drawImage(overlayData, 0, 0);
break;
case TOP_RIGHT:
drawImage(overlayData, size.x - overlayData.width, 0);
break;
case BOTTOM_LEFT:
drawImage(overlayData, 0, size.y - overlayData.height);
break;
case BOTTOM_RIGHT:
drawImage(overlayData, size.x - overlayData.width, size.y - overlayData.height);
break;
}
}
}
public boolean equals(Object o) {
if (! (o instanceof OverlayIcon)) return false;
OverlayIcon other = (OverlayIcon) o;
return base.equals(other.base) && Arrays.equals(overlays, other.overlays);
}
public int hashCode() {
int code = base.hashCode();
for (int i = 0; i < overlays.length; i++) {
code ^= overlays[i].hashCode();
}
return code;
}
protected void drawCompositeImage(int width, int height) {
if(descriptorBase != null) {
ImageData bg;
if (descriptorBase == null || (bg= descriptorBase.getImageData()) == null)
bg= DEFAULT_IMAGE_DATA;
drawImage(bg, 0, 0);
} else {
drawImage(base.getImageData(), 0, 0);
}
drawOverlays(overlays, locations);
}
protected Point getSize() {
return size;
}
}
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