/* * @(#)Effect.java	1.2 07/12/12 * * Copyright 2007 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */package com.sun.java.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) * @version 1.0 */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;        }    }}