/*
* Copyright (c) 2005-2010 Flamingo 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 Flamingo 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.flamingo.api.common.icon;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.BufferedImageOp;
import java.util.LinkedHashMap;
import java.util.Map;
import org.pushingpixels.flamingo.api.common.AsynchronousLoading;
import org.pushingpixels.flamingo.internal.utils.FlamingoUtilities;
/**
* Implementation of {@link ResizableIcon} that allows applying a
* {@link BufferedImageOp} on another icon.
*
* @author Kirill Grouchnikov
*/
public class FilteredResizableIcon implements ResizableIcon {
/**
* Image cache to speed up rendering.
*/
protected Map<String, BufferedImage> cachedImages;
/**
* The main (pre-filtered) icon.
*/
protected ResizableIcon delegate;
/**
* Filter operation.
*/
protected BufferedImageOp operation;
/**
* Creates a new filtered icon.
*
* @param delegate
* The main (pre-filtered) icon.
* @param operation
* Filter operation.
*/
public FilteredResizableIcon(ResizableIcon delegate,
BufferedImageOp operation) {
super();
this.delegate = delegate;
this.operation = operation;
this.cachedImages = new LinkedHashMap<String, BufferedImage>() {
@Override
protected boolean removeEldestEntry(
java.util.Map.Entry<String, BufferedImage> eldest) {
return size() > 5;
}
};
}
/*
* (non-Javadoc)
*
* @see javax.swing.Icon#getIconHeight()
*/
@Override
public int getIconHeight() {
return delegate.getIconHeight();
}
/*
* (non-Javadoc)
*
* @see javax.swing.Icon#getIconWidth()
*/
@Override
public int getIconWidth() {
return delegate.getIconWidth();
}
/*
* (non-Javadoc)
*
* @see
* org.jvnet.flamingo.common.icon.ResizableIcon#setDimension(java.awt.Dimension
* )
*/
@Override
public void setDimension(Dimension newDimension) {
delegate.setDimension(newDimension);
}
/*
* (non-Javadoc)
*
* @see javax.swing.Icon#paintIcon(java.awt.Component, java.awt.Graphics,
* int, int)
*/
@Override
public void paintIcon(Component c, Graphics g, int x, int y) {
// check cache
String key = this.getIconWidth() + ":" + this.getIconHeight();
if (!this.cachedImages.containsKey(key)) {
// check if loading
if (this.delegate instanceof AsynchronousLoading) {
AsynchronousLoading asyncDelegate = (AsynchronousLoading) this.delegate;
// if the delegate is still loading - do nothing
if (asyncDelegate.isLoading())
return;
}
BufferedImage offscreen = FlamingoUtilities.getBlankImage(this
.getIconWidth(), this.getIconHeight());
Graphics2D g2d = offscreen.createGraphics();
this.delegate.paintIcon(c, g2d, 0, 0);
g2d.dispose();
BufferedImage filtered = this.operation.filter(offscreen, null);
this.cachedImages.put(key, filtered);
}
g.drawImage(this.cachedImages.get(key), x, y, null);
}
}