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Lighweight Java Game Library
/*
* Copyright (c) 2002-2008 LWJGL Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'LWJGL' nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.lwjgl.opengl;
/**
* The AWT compatible Canvas for Mac OS X.
* @author elias_naur
*/
import java.awt.Canvas;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.awt.event.HierarchyEvent;
import java.awt.event.HierarchyListener;
final class MacOSXCanvasListener implements ComponentListener, HierarchyListener {
private final Canvas canvas;
private int width;
private int height;
private boolean context_update;
private boolean resized;
MacOSXCanvasListener(Canvas canvas) {
this.canvas = canvas;
canvas.addComponentListener(this);
canvas.addHierarchyListener(this);
setUpdate();
}
public void disableListeners() {
// Mac OS X applets will hang in Display.destroy() when parented when removing the listeners directly
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
canvas.removeComponentListener(MacOSXCanvasListener.this);
canvas.removeHierarchyListener(MacOSXCanvasListener.this);
}
});
}
public boolean syncShouldUpdateContext() {
boolean should_update;
synchronized ( this ) {
should_update = context_update;
context_update = false;
}
return should_update;
}
private synchronized void setUpdate() {
synchronized ( this ) {
width = canvas.getWidth();
height = canvas.getHeight();
context_update = true;
}
}
public int syncGetWidth() {
synchronized ( this ) {
return width;
}
}
public int syncGetHeight() {
synchronized ( this ) {
return height;
}
}
public void componentShown(ComponentEvent e) {
}
public void componentHidden(ComponentEvent e) {
}
public void componentResized(ComponentEvent e) {
setUpdate();
resized = true;
}
public void componentMoved(ComponentEvent e) {
setUpdate();
}
public void hierarchyChanged(HierarchyEvent e) {
setUpdate();
}
public boolean wasResized() {
if (resized) {
resized = false;
return true;
}
return false;
}
}