001/* 002 * SVG Salamander 003 * Copyright (c) 2004, Mark McKay 004 * All rights reserved. 005 * 006 * Redistribution and use in source and binary forms, with or 007 * without modification, are permitted provided that the following 008 * conditions are met: 009 * 010 * - Redistributions of source code must retain the above 011 * copyright notice, this list of conditions and the following 012 * disclaimer. 013 * - Redistributions in binary form must reproduce the above 014 * copyright notice, this list of conditions and the following 015 * disclaimer in the documentation and/or other materials 016 * provided with the distribution. 017 * 018 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 019 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 020 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 021 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 022 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 023 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 025 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 026 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 027 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 028 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 029 * OF THE POSSIBILITY OF SUCH DAMAGE. 030 * 031 * Mark McKay can be contacted at mark@kitfox.com. Salamander and other 032 * projects can be found at http://www.kitfox.com 033 * 034 * Created on August 15, 2004, 2:51 AM 035 */ 036 037package com.kitfox.svg.animation; 038 039import com.kitfox.svg.SVGElement; 040import com.kitfox.svg.SVGException; 041import com.kitfox.svg.SVGLoaderHelper; 042import com.kitfox.svg.animation.parser.AnimTimeParser; 043import com.kitfox.svg.xml.ColorTable; 044import com.kitfox.svg.xml.StyleAttribute; 045import java.awt.Color; 046import org.xml.sax.Attributes; 047import org.xml.sax.SAXException; 048 049 050/** 051 * @author Mark McKay 052 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a> 053 */ 054public class AnimateColor extends AnimateBase implements AnimateColorIface 055{ 056 public static final String TAG_NAME = "animateColor"; 057 058 059 private Color fromValue; 060 private Color toValue; 061 062 /** Creates a new instance of Animate */ 063 public AnimateColor() 064 { 065 } 066 067 public String getTagName() 068 { 069 return TAG_NAME; 070 } 071 072 public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent) throws SAXException 073 { 074 //Load style string 075 super.loaderStartElement(helper, attrs, parent); 076 077 String strn = attrs.getValue("from"); 078 fromValue = ColorTable.parseColor(strn); 079 080 strn = attrs.getValue("to"); 081 toValue = ColorTable.parseColor(strn); 082 } 083 084 085 /** 086 * Evaluates this animation element for the passed interpolation time. Interp 087 * must be on [0..1]. 088 */ 089 public Color evalColor(double interp) 090 { 091 int r1 = fromValue.getRed(); 092 int g1 = fromValue.getGreen(); 093 int b1 = fromValue.getBlue(); 094 int r2 = toValue.getRed(); 095 int g2 = toValue.getGreen(); 096 int b2 = toValue.getBlue(); 097 double invInterp = 1.0 - interp; 098 099 return new Color((int)(r1 * invInterp + r2 * interp), 100 (int)(g1 * invInterp + g2 * interp), 101 (int)(b1 * invInterp + b2 * interp)); 102 } 103 104 protected void rebuild(AnimTimeParser animTimeParser) throws SVGException 105 { 106 super.rebuild(animTimeParser); 107 108 StyleAttribute sty = new StyleAttribute(); 109 110 if (getPres(sty.setName("from"))) 111 { 112 String strn = sty.getStringValue(); 113 fromValue = ColorTable.parseColor(strn); 114 } 115 116 if (getPres(sty.setName("to"))) 117 { 118 String strn = sty.getStringValue(); 119 toValue = ColorTable.parseColor(strn); 120 } 121 } 122 123 /** 124 * @return the fromValue 125 */ 126 public Color getFromValue() 127 { 128 return fromValue; 129 } 130 131 /** 132 * @param fromValue the fromValue to set 133 */ 134 public void setFromValue(Color fromValue) 135 { 136 this.fromValue = fromValue; 137 } 138 139 /** 140 * @return the toValue 141 */ 142 public Color getToValue() 143 { 144 return toValue; 145 } 146 147 /** 148 * @param toValue the toValue to set 149 */ 150 public void setToValue(Color toValue) 151 { 152 this.toValue = toValue; 153 } 154}