001 /*
002 * AdobeComposite.java
003 *
004 *
005 * The Salamander Project - 2D and 3D graphics libraries in Java
006 * Copyright (C) 2004 Mark McKay
007 *
008 * This library is free software; you can redistribute it and/or
009 * modify it under the terms of the GNU Lesser General Public
010 * License as published by the Free Software Foundation; either
011 * version 2.1 of the License, or (at your option) any later version.
012 *
013 * This library is distributed in the hope that it will be useful,
014 * but WITHOUT ANY WARRANTY; without even the implied warranty of
015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
016 * Lesser General Public License for more details.
017 *
018 * You should have received a copy of the GNU Lesser General Public
019 * License along with this library; if not, write to the Free Software
020 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
021 *
022 * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
023 * projects can be found at http://www.kitfox.com
024 *
025 * Created on April 1, 2004, 6:40 AM
026 */
027
028 package com.kitfox.svg.composite;
029
030 import java.awt.*;
031 import java.awt.image.*;
032
033 /**
034 * @author Mark McKay
035 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
036 */
037 public class AdobeComposite implements Composite
038 {
039 public static final int CT_NORMAL = 0;
040 public static final int CT_MULTIPLY = 1;
041 public static final int CT_LAST = 2;
042
043 final int compositeType;
044 final float extraAlpha;
045
046 /** Creates a new instance of AdobeComposite */
047 public AdobeComposite(int compositeType, float extraAlpha)
048 {
049 this.compositeType = compositeType;
050 this.extraAlpha = extraAlpha;
051
052 if (compositeType < 0 || compositeType >= CT_LAST)
053 {
054 new Exception("Invalid composite type").printStackTrace();
055 }
056
057 if (extraAlpha < 0f || extraAlpha > 1f)
058 {
059 new Exception("Invalid alpha").printStackTrace();
060 }
061 }
062
063 public int getCompositeType() { return compositeType; }
064
065 public CompositeContext createContext(ColorModel srcColorModel, ColorModel dstColorModel, RenderingHints hints)
066 {
067 return new AdobeCompositeContext(compositeType, extraAlpha);
068 }
069
070 }