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/*******************************************************************************
* Copyright (c) 2007, 2015 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
******************************************************************************/
package org.eclipse.ui.internal;
import java.util.Iterator;
import org.eclipse.jface.util.Geometry;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.graphics.Region;
import org.eclipse.swt.widgets.Shell;
/**
* Creates an animation feedback that will morph the start rectangle to the end rectangle
* for AnimationEngine.
*
* @since 3.3
*
*/
public class LegacyAnimationFeedback extends RectangleAnimationFeedbackBase {
private static final int LINE_WIDTH = 1;
private Region shellRegion;
public LegacyAnimationFeedback(Shell parentShell, Rectangle start,
Rectangle end) {
super(parentShell, start, end);
}
@Override
public void renderStep(AnimationEngine engine) {
if (shellRegion != null) {
shellRegion.dispose();
shellRegion = new Region(getAnimationShell().getDisplay());
}
// Iterate across the set of start/end rects
Iterator currentRects = getCurrentRects(engine.amount()).iterator();
while (currentRects.hasNext()) {
Rectangle curRect = (Rectangle) currentRects.next();
Rectangle rect = Geometry.toControl(getAnimationShell(), curRect);
shellRegion.add(rect);
rect.x += LINE_WIDTH;
rect.y += LINE_WIDTH;
rect.width = Math.max(0, rect.width - 2 * LINE_WIDTH);
rect.height = Math.max(0, rect.height - 2 * LINE_WIDTH);
shellRegion.subtract(rect);
}
getAnimationShell().setRegion(shellRegion);
getAnimationShell().getDisplay().update();
}
@Override
public void initialize(AnimationEngine engine) {
Color color = getAnimationShell().getDisplay().getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW);
getAnimationShell().setBackground(color);
// Ensure that the background won't show on the initial display
shellRegion = new Region(getAnimationShell().getDisplay());
getAnimationShell().setRegion(shellRegion);
}
@Override
public void dispose() {
super.dispose();
if (!shellRegion.isDisposed())
shellRegion.dispose();
}
/**
* Perform any initialization you want to have happen -before- the
* amination starts
*/
@Override
public boolean jobInit(AnimationEngine engine) {
if (!super.jobInit(engine))
return false;
// Compute the shell's bounds
Rectangle shellBounds = Geometry.copy((Rectangle) getStartRects()
.get(0));
Iterator startIter = getStartRects().iterator();
Iterator endIter = getEndRects().iterator();
while (startIter.hasNext()) {
shellBounds.add((Rectangle) startIter.next());
shellBounds.add((Rectangle) endIter.next());
}
getAnimationShell().setBounds(shellBounds);
// Making the shell visible will be slow on old video cards, so only start
// the timer once it is visible.
getAnimationShell().setVisible(true);
return true; // OK to go...
}
}
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