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Building modern, elegant and fast Swing applications
/*
* Copyright (c) 2005-2018 Trident Kirill Grouchnikov. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* o 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.
*
* o Neither the name of Trident Kirill Grouchnikov 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.pushingpixels.trident.swing;
import org.pushingpixels.trident.Timeline.TimelineState;
import org.pushingpixels.trident.callback.TimelineCallbackAdapter;
import java.awt.*;
import java.util.concurrent.atomic.AtomicBoolean;
public class SwingRepaintCallback extends TimelineCallbackAdapter {
private Component comp;
private Rectangle rect;
private AtomicBoolean repaintGuard;
public SwingRepaintCallback(Component comp) {
this(comp, null);
}
public SwingRepaintCallback(Component comp, Rectangle rect) {
if (comp == null) {
throw new NullPointerException("Component must be non-null");
}
this.comp = comp;
if (rect != null) {
this.rect = new Rectangle(rect);
}
}
public synchronized void setAutoRepaintMode(boolean autoRepaintMode) {
if (autoRepaintMode) {
this.repaintGuard = null;
} else {
this.repaintGuard = new AtomicBoolean(false);
}
}
public synchronized void forceRepaintOnNextPulse() {
if (this.repaintGuard == null) {
throw new IllegalArgumentException(
"This method cannot be called on auto-repaint callback");
}
this.repaintGuard.set(true);
}
public synchronized void setRepaintRectangle(Rectangle rect) {
if (rect == null) {
this.rect = null;
} else {
this.rect = new Rectangle(rect);
}
}
@Override
public synchronized void onTimelinePulse(float durationFraction, float timelinePosition) {
repaintAsNecessary();
}
@Override
public synchronized void onTimelineStateChanged(TimelineState oldState, TimelineState newState,
float durationFraction, float timelinePosition) {
repaintAsNecessary();
}
private void repaintAsNecessary() {
if (this.repaintGuard != null) {
if (!this.repaintGuard.compareAndSet(true, false)) {
// no need to repaint
return;
}
}
if (this.rect == null)
this.comp.repaint();
else
this.comp.repaint(this.rect.x, this.rect.y, this.rect.width, this.rect.height);
}
}