| /******************************************************************************* |
| * 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.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.ui.internal.AnimationEngine; |
| import org.eclipse.ui.internal.AnimationFeedbackBase; |
| |
| /** |
| * RectangleAnimationFeedbackBase is an abstract base class for all the |
| * rectangle animations. |
| * @since 3.3 |
| * |
| */ |
| public abstract class RectangleAnimationFeedbackBase extends AnimationFeedbackBase { |
| |
| private List startRects = new ArrayList(); |
| private List endRects = new ArrayList(); |
| |
| /** |
| * Creates a Rectangle Animation Feedback |
| * |
| * @param parentShell specifies the composite where the animation will be drawn |
| * @param start initial rectangle (display coordinates) |
| * @param end final rectangle (display coordinates) |
| */ |
| public RectangleAnimationFeedbackBase(Shell parentShell, Rectangle start, |
| Rectangle end) { |
| super(parentShell); |
| addStartRect(start); |
| addEndRect(end); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.internal.AnimationFeedbackBase#jobInit(org.eclipse.ui.internal.AnimationEngine) |
| * |
| * Prevent execution if there are no rects to draw or there's a mismatch in the count |
| */ |
| public boolean jobInit(AnimationEngine engine) { |
| if (!super.jobInit(engine)) |
| return false; |
| |
| return startRects.size() > 0 && startRects.size() == endRects.size(); |
| } |
| |
| public void addStartRect(Rectangle rect) { |
| if (rect != null) { |
| startRects.add(rect); |
| } |
| } |
| |
| public void addEndRect(Rectangle rect) { |
| if (rect != null) { |
| endRects.add(rect); |
| } |
| } |
| |
| public void addStartRect(Control ctrl) { |
| Rectangle ctrlBounds = ctrl.getBounds(); |
| Rectangle startRect = Geometry.toDisplay(ctrl.getParent(), ctrlBounds); |
| addStartRect(startRect); |
| } |
| |
| public void addEndRect(Control ctrl) { |
| Rectangle ctrlBounds = ctrl.getBounds(); |
| Rectangle endRect = Geometry.toDisplay(ctrl.getParent(), ctrlBounds); |
| addEndRect(endRect); |
| } |
| |
| public static Rectangle interpolate(Rectangle start, Rectangle end, |
| double amount) { |
| double initialWeight = 1.0 - amount; |
| |
| Rectangle result = new Rectangle((int) (start.x * initialWeight + end.x |
| * amount), (int) (start.y * initialWeight + end.y * amount), |
| (int) (start.width * initialWeight + end.width * amount), |
| (int) (start.height * initialWeight + end.height * amount)); |
| |
| return result; |
| } |
| |
| public List getStartRects() { |
| return startRects; |
| } |
| |
| public List getEndRects() { |
| return endRects; |
| } |
| |
| public List getCurrentRects(double amount) { |
| List currentRects = new ArrayList(); |
| Iterator startIter = getStartRects().iterator(); |
| Iterator endIter = getEndRects().iterator(); |
| while (startIter.hasNext()) { |
| Rectangle start = (Rectangle) startIter.next(); |
| Rectangle end = (Rectangle) endIter.next(); |
| |
| // Get the bounds of the interpolated rect |
| Rectangle curRect = interpolate(start, end, amount); |
| currentRects.add(curRect); |
| } |
| return currentRects; |
| } |
| |
| } |