/*******************************************************************************

 * Copyright (c) 2004, 2008 Tasktop Technologies 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:

 *     Tasktop Technologies - initial API and implementation

 *******************************************************************************/

package com.nokia.carbide.remoteconnections.internal.ui.mylyn;

import org.eclipse.jface.resource.CompositeImageDescriptor;

import org.eclipse.jface.resource.ImageDescriptor;

import org.eclipse.swt.graphics.ImageData;

import org.eclipse.swt.graphics.Point;

/**

 * @author Mik Kersten

 */

public class CompositeElementImageDescriptor extends CompositeImageDescriptor {

	private final ImageData base;

	private ImageData kind;

	protected Point size;

	public static final int OFFSET_DECORATION = 6;

	static final int WIDTH_ICON = 16;

	private int offset = 0;

	public CompositeElementImageDescriptor(ImageDescriptor icon, ImageDescriptor overlayKind, boolean wide) {

		this.base = getImageData(icon);

		if (overlayKind != null) {

			this.kind = getImageData(overlayKind);

		}

		int width = WIDTH_ICON;

		if (wide) {

			width += OFFSET_DECORATION;

			offset = OFFSET_DECORATION;

		}

		this.size = new Point(width, base.height);

	}

	@Override

	protected void drawCompositeImage(int width, int height) {

		drawImage(base, offset, 1);

		if (kind != null) {

			drawImage(kind, offset + 5, 6);

		}

	}

	private ImageData getImageData(ImageDescriptor descriptor) {

		ImageData data = descriptor.getImageData();

		// see bug 51965: getImageData can return null

		if (data == null) {

			data = DEFAULT_IMAGE_DATA;

		}

		return data;

	}

	@Override

	protected Point getSize() {

		return new Point(size.x, size.y);

	}

}