eu.numberfour.n4js.ui.dialog.virtualresource.DecoratedImage.java Source code

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Here is the source code for eu.numberfour.n4js.ui.dialog.virtualresource.DecoratedImage.java

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/**
 * Copyright (c) 2016 NumberFour AG.
 * 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:
 *   NumberFour AG - Initial API and implementation
 */
package eu.numberfour.n4js.ui.dialog.virtualresource;

import org.eclipse.jface.resource.CompositeImageDescriptor;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.Point;

/**
 * Helper class to decorate image descriptors.
 */
public class DecoratedImage extends CompositeImageDescriptor {

    private final ImageData data;
    private final ImageData decoratorData;
    private final Point size;

    /**
     * Creates a new decorated image descriptor
     *
     * @param imageDescriptor
     *            The source image
     * @param decoratorImage
     *            The decorator image
     */
    public DecoratedImage(ImageDescriptor imageDescriptor, ImageDescriptor decoratorImage) {
        this.data = imageDescriptor.getImageData();
        this.size = new Point(this.data.width, this.data.height);
        this.decoratorData = decoratorImage.getImageData().scaledTo(new Double(this.size.x / 1.5).intValue(),
                new Double(this.size.y / 1.5).intValue());
    }

    @Override
    protected void drawCompositeImage(int width, int height) {
        drawImage(this.data, 0, 0);
        drawImage(this.decoratorData, 0, this.size.y - this.decoratorData.height);
    }

    @Override
    protected Point getSize() {
        return this.size;
    }

}