org.eclipse.ui.internal.RectangleAnimationImageFeedback Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of org.eclipse.ui.workbench Show documentation
This is org.eclipse.ui.workbench jar used by Scout SDK
There is a newer version: 3.108.0.v20160602-1232
Show newest version
/*******************************************************************************
 * Copyright (c) 2007 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:
 *     IBM Corporation - initial API and implementation
 ******************************************************************************/
package org.eclipse.ui.internal;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.jface.util.Geometry;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.internal.AnimationEngine;

/**
 * Creates an animation effect where the interpolated rectangles are displayed using Canvas
 * controls that show an image of the bits that were originally occupied by the various
 * 'start' rectangles.
 *
 * @since 3.3
 *
 */
public class RectangleAnimationImageFeedback extends
		RectangleAnimationFeedbackBase {
	private class ImageCanvas extends Canvas {
		private Image image;

		/**
		 * @param parent
		 * @param style
		 */
		public ImageCanvas(Composite parent, int style, Image image) {
			super(parent, style);
			this.image = image;

			addPaintListener(new PaintListener() {
				@Override
				public void paintControl(PaintEvent e) {
					paintImage(e.gc);
				}
			});
		}

		/**
		 * @param gc
		 */
		protected void paintImage(GC gc) {
			gc.drawImage(image, 0, 0, image.getBounds().width, image
					.getBounds().height, 0, 0, getBounds().width,
					getBounds().height);
		}

		@Override
		public void dispose() {
			super.dispose();
			image.dispose();
		}
	}

	private Image backingStore;
	private Shell theShell;
	private Display display;
	private List controls = new ArrayList();


	public RectangleAnimationImageFeedback(Shell parentShell, Rectangle start,
			Rectangle end) {
		super(parentShell, start, end);
	}

	@Override
	public void dispose() {
		backingStore.dispose();
		for (Iterator ctrlIter = controls.iterator(); ctrlIter.hasNext();) {
			ImageCanvas canvas = (ImageCanvas) ctrlIter.next();
			canvas.dispose();
		}

		theShell.setVisible(false);
		theShell.dispose();
	}

	@Override
	public void initialize(AnimationEngine engine) {
		display = getAnimationShell().getDisplay();

		Rectangle psRect = getAnimationShell().getBounds();
		theShell = new Shell(getAnimationShell(), SWT.NO_TRIM | SWT.ON_TOP);
		theShell.setBounds(getAnimationShell().getBounds());

		// Capture the background image
		backingStore = new Image(theShell.getDisplay(), psRect);
		GC gc = new GC(display);
		gc.copyArea(backingStore, psRect.x, psRect.y);
		gc.dispose();
//		changeCoordinates();
//		captureImages();
		theShell.setBackgroundImage(backingStore);
		theShell.setVisible(true);
		display.update();

	}

	@Override
	public boolean jobInit(AnimationEngine engine) {
		changeCoordinates();
		captureImages();
		return super.jobInit(engine);
	}

	@Override
	public void addStartRect(Rectangle rect) {
		if (rect == null)
			return;

		//	Rectangle start = Geometry.toControl(getAnimationShell(), rect);
		super.addStartRect(rect);

	}

	@Override
	public void addEndRect(Rectangle rect) {
		if (rect != null) {
			//	Rectangle end = Geometry.toControl(getAnimationShell(), rect);
			super.addEndRect(rect);
		}
	}

	@Override
	public void renderStep(AnimationEngine engine) {
		Iterator ctrlIter = controls.iterator();
		Iterator currentRects = getCurrentRects(engine.amount()).iterator();
		while (currentRects.hasNext()) {
			ImageCanvas canvas = (ImageCanvas) ctrlIter.next();
			canvas.setBounds((Rectangle) currentRects.next());
		}
		display.update();

	}

	public void changeCoordinates() {
		Iterator startRectIter = getStartRects().iterator();
		Iterator endRectIter = getEndRects().iterator();
		while (startRectIter.hasNext()) {
			Rectangle startRect = (Rectangle) startRectIter.next();
			Rectangle mapStartRect = Geometry.toControl(theShell, startRect);
			startRect.x = mapStartRect.x;
			startRect.y = mapStartRect.y;
			Rectangle endRect = (Rectangle) endRectIter.next();
			Rectangle mapEndRect = Geometry.toControl(theShell, endRect);
			endRect.x = mapEndRect.x;
			endRect.y = mapEndRect.y;
		}
	}

	private void captureImages() {

		for (Iterator iterator = getStartRects().iterator(); iterator.hasNext();) {
			Rectangle rect = (Rectangle) iterator.next();
			Image image = new Image(display, rect.width, rect.height);
			GC gc = new GC(backingStore);
			gc.copyArea(image, rect.x, rect.y);
			gc.dispose();
			ImageCanvas canvas = new ImageCanvas(theShell, SWT.BORDER
					| SWT.NO_BACKGROUND, image);
			controls.add(canvas);

		}
	}

}