/*******************************************************************************
* Copyright (c) 2015, 2015 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Bruno Medeiros - initial API and implementation
*******************************************************************************/
package melnorme.util.swt.jface.resources;
import static melnorme.utilbox.core.Assert.AssertNamespace.assertNotNull;
import static melnorme.utilbox.core.Assert.AssertNamespace.assertUnreachable;
import org.eclipse.jface.resource.CompositeImageDescriptor;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.ImageData;
import melnorme.lang.ide.core.LangCore;
import melnorme.utilbox.collections.Indexable;
public abstract class CompositeImageDescriptorExt extends CompositeImageDescriptor {
protected final ImageDescriptor baseImage;
public CompositeImageDescriptorExt(ImageDescriptor baseImage) {
super();
this.baseImage = assertNotNull(baseImage);
}
protected ImageData getImageData(ImageDescriptor desc) {
ImageData imageData = desc.getImageData();
if(imageData == null) {
LangCore.logError("Could not get ImageData.");
return new ImageData(1, 1, 32, DEFAULT_IMAGE_DATA.palette);
}
return imageData;
}
/* ----------------- ----------------- */
public static enum Corner {
TOP_LEFT,
TOP_RIGHT,
BOTTOM_LEFT,
BOTTOM_RIGHT,
;
public boolean isTop() {
return this == TOP_LEFT || this == TOP_RIGHT;
}
public boolean isBottom() {
return !isTop();
}
public boolean isLeft() {
return this == TOP_LEFT || this == BOTTOM_LEFT;
}
public boolean isRight() {
return !isLeft();
}
}
public static enum HorizontalDirection {
LEFT,
RIGHT,
}
public static enum VerticalDirection {
TOP,
BOTTOM,
}
protected int xOffset;
protected int yOffset;
public void resetDrawPosition(Corner corner) {
switch(corner) {
case TOP_LEFT:
xOffset = 0;
yOffset = 0;
return;
case TOP_RIGHT:
xOffset = getSize().x;
yOffset = 0;
return;
case BOTTOM_LEFT:
xOffset = 0;
yOffset = getSize().y;
return;
case BOTTOM_RIGHT:
xOffset = getSize().x;
yOffset = getSize().y;
return;
}
throw assertUnreachable();
}
public void drawOverlayAtCorner(ImageDescriptor overlayImage, Corner corner) {
resetDrawPosition(corner);
drawOverlayAtCursor(overlayImage, corner);
}
protected void drawOverlayAtCursor(ImageDescriptor overlayImage, Corner corner) {
ImageData imageData = getImageData(overlayImage);
if(corner.isRight()) {
xOffset -= imageData.width;
}
int ypos = corner.isTop() ? yOffset : yOffset - imageData.height;
drawImage(imageData, xOffset, ypos);
if(corner.isLeft()) {
xOffset += imageData.width;
}
}
protected void drawImageSequence(Indexable<ImageDescriptor> images, Corner corner,
int xOffset, int yOffset) {
this.xOffset = xOffset;
this.yOffset = yOffset;
for(ImageDescriptor desc : images) {
drawOverlayAtCursor(desc, corner);
}
}
}