org.eclipse.mylyn.commons.ui/src/org/eclipse/mylyn/internal/commons/ui/ColorCanvas.java

/*******************************************************************************
 * Copyright (c) 2004, 2008 Willian Mitsuda 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:
 *     Willian Mitsuda - initial API and implementation
 *     Tasktop Technologies - improvements
 *******************************************************************************/

package org.eclipse.mylyn.internal.commons.ui;

import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;

/**
 * A tiny control just for color display
 * 
 * @author Willian Mitsuda
 */
public class ColorCanvas extends Canvas {

	private final Color color;

	public ColorCanvas(Composite parent, int style, RGB rgb) {
		super(parent, style);
		color = new Color(parent.getDisplay(), rgb);
		addPaintListener(new PaintListener() {
			public void paintControl(PaintEvent e) {
				e.gc.setBackground(color);
				e.gc.fillRectangle(getClientArea());
			}
		});
		addDisposeListener(new DisposeListener() {
			public void widgetDisposed(DisposeEvent e) {
				color.dispose();
			}
		});
	}

	public RGB getRGB() {
		return color.getRGB();
	}

}