/*
* File : LinearAnimator.java
* Created : 14 mars 2004
* By : Olivier
*
* Azureus - a Java Bittorrent client
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details ( see the LICENSE file ).
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.gudy.azureus2.ui.swt.animations.shell;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Display;
import org.gudy.azureus2.core3.util.AERunnable;
import org.gudy.azureus2.ui.swt.animations.Animator;
/**
* @author Olivier Chalouhi
*
*/
public class LinearAnimator extends Animator{
private AnimableShell shell;
private Display display;
private int startX;
private int startY;
private int endX;
private int endY;
private int nbSteps;
private int period;
private boolean interrupted;
public LinearAnimator(AnimableShell shell,Point start,Point end,int nbSteps,int period) {
super("Linear Shell Animator");
if(period < 20) period = 20;
if(nbSteps <= 0) nbSteps = 1;
this.shell = shell;
this.display = shell.getShell().getDisplay();
this.startX = start.x;
this.startY = start.y;
this.endX = end.x;
this.endY = end.y;
this.nbSteps = nbSteps;
this.period = period;
this.interrupted = false;
}
public void runSupport() {
try {
shell.animationStarted(this);
int step = 0;
while(step <= nbSteps && !interrupted) {
setShellAtStep(step);
shell.reportPercent(100 * step /nbSteps);
step++;
try {
Thread.sleep(period);
} catch(Exception e) {
//Stop animating
step = nbSteps;
}
}
} finally {
shell.animationEnded(this);
}
}
public void interrupt() {
this.interrupted = true;
}
private void setShellAtStep(int step) {
if(display == null || display.isDisposed())
return;
final int x = startX + ((endX - startX) * step ) / nbSteps;
final int y = startY + ((endY - startY) * step ) / nbSteps;
display.asyncExec(new AERunnable() {
public void runSupport() {
if(shell == null || shell.getShell() == null || shell.getShell().isDisposed())
return;
shell.getShell().setLocation(x,y);
}
});
}
}