/*
* Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package javax.swing.plaf.nimbus;
import sun.awt.AppContext;
import java.awt.image.BufferedImage;
import java.lang.ref.SoftReference;
/**
* Effect
*
* @author Created by Jasper Potts (Jun 18, 2007)
*/
abstract class Effect {
enum EffectType {
UNDER, BLENDED, OVER
}
// =================================================================================================================
// Abstract Methods
/**
* Get the type of this effect, one of UNDER,BLENDED,OVER. UNDER means the result of apply effect should be painted
* under the src image. BLENDED means the result of apply sffect contains a modified src image so just it should be
* painted. OVER means the result of apply effect should be painted over the src image.
*
* @return The effect type
*/
abstract EffectType getEffectType();
/**
* Get the opacity to use to paint the result effected image if the EffectType is UNDER or OVER.
*
* @return The opactity for the effect, 0.0f -> 1.0f
*/
abstract float getOpacity();
/**
* Apply the effect to the src image generating the result . The result image may or may not contain the source
* image depending on what the effect type is.
*
* @param src The source image for applying the effect to
* @param dst The dstination image to paint effect result into. If this is null then a new image will be created
* @param w The width of the src image to apply effect to, this allow the src and dst buffers to be bigger than
* the area the need effect applied to it
* @param h The height of the src image to apply effect to, this allow the src and dst buffers to be bigger than
* the area the need effect applied to it
* @return The result of appl
*/
abstract BufferedImage applyEffect(BufferedImage src, BufferedImage dst, int w, int h);
// =================================================================================================================
// Static data cache
protected static ArrayCache getArrayCache() {
ArrayCache cache = (ArrayCache)AppContext.getAppContext().get(ArrayCache.class);
if (cache == null){
cache = new ArrayCache();
AppContext.getAppContext().put(ArrayCache.class,cache);
}
return cache;
}
protected static class ArrayCache {
private SoftReference<int[]> tmpIntArray = null;
private SoftReference<byte[]> tmpByteArray1 = null;
private SoftReference<byte[]> tmpByteArray2 = null;
private SoftReference<byte[]> tmpByteArray3 = null;
protected int[] getTmpIntArray(int size) {
int[] tmp;
if (tmpIntArray == null || (tmp = tmpIntArray.get()) == null || tmp.length < size) {
// create new array
tmp = new int[size];
tmpIntArray = new SoftReference<int[]>(tmp);
}
return tmp;
}
protected byte[] getTmpByteArray1(int size) {
byte[] tmp;
if (tmpByteArray1 == null || (tmp = tmpByteArray1.get()) == null || tmp.length < size) {
// create new array
tmp = new byte[size];
tmpByteArray1 = new SoftReference<byte[]>(tmp);
}
return tmp;
}
protected byte[] getTmpByteArray2(int size) {
byte[] tmp;
if (tmpByteArray2 == null || (tmp = tmpByteArray2.get()) == null || tmp.length < size) {
// create new array
tmp = new byte[size];
tmpByteArray2 = new SoftReference<byte[]>(tmp);
}
return tmp;
}
protected byte[] getTmpByteArray3(int size) {
byte[] tmp;
if (tmpByteArray3 == null || (tmp = tmpByteArray3.get()) == null || tmp.length < size) {
// create new array
tmp = new byte[size];
tmpByteArray3 = new SoftReference<byte[]>(tmp);
}
return tmp;
}
}
}