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 January 26, 2004, 5:25 PM 035 */ 036package com.kitfox.svg; 037 038import com.kitfox.svg.xml.StyleAttribute; 039import com.kitfox.svg.xml.XMLParseUtil; 040import java.awt.Graphics2D; 041import java.awt.Shape; 042import java.awt.geom.GeneralPath; 043import java.awt.geom.Rectangle2D; 044 045/** 046 * @author Mark McKay 047 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a> 048 */ 049public class Polygon extends ShapeElement 050{ 051 public static final String TAG_NAME = "polygon"; 052 053 int fillRule = GeneralPath.WIND_NON_ZERO; 054 String pointsStrn = ""; 055 GeneralPath path; 056 057 /** 058 * Creates a new instance of Rect 059 */ 060 public Polygon() 061 { 062 } 063 064 @Override 065 public String getTagName() 066 { 067 return TAG_NAME; 068 } 069 070 @Override 071 protected void build() throws SVGException 072 { 073 super.build(); 074 075 StyleAttribute sty = new StyleAttribute(); 076 077 if (getPres(sty.setName("points"))) 078 { 079 pointsStrn = sty.getStringValue(); 080 } 081 082 String fillRuleStrn = getStyle(sty.setName("fill-rule")) ? sty.getStringValue() : "nonzero"; 083 fillRule = fillRuleStrn.equals("evenodd") ? GeneralPath.WIND_EVEN_ODD : GeneralPath.WIND_NON_ZERO; 084 085 buildPath(); 086 } 087 088 protected void buildPath() 089 { 090 float[] points = XMLParseUtil.parseFloatList(pointsStrn); 091 path = new GeneralPath(fillRule, points.length / 2); 092 093 path.moveTo(points[0], points[1]); 094 for (int i = 2; i < points.length; i += 2) 095 { 096 path.lineTo(points[i], points[i + 1]); 097 } 098 path.closePath(); 099 } 100 101 @Override 102 public void render(Graphics2D g) throws SVGException 103 { 104 beginLayer(g); 105 renderShape(g, path); 106 finishLayer(g); 107 } 108 109 @Override 110 public Shape getShape() 111 { 112 return shapeToParent(path); 113 } 114 115 @Override 116 public Rectangle2D getBoundingBox() throws SVGException 117 { 118 return boundsToParent(includeStrokeInBounds(path.getBounds2D())); 119 } 120 121 /** 122 * Updates all attributes in this diagram associated with a time event. Ie, 123 * all attributes with track information. 124 * 125 * @return - true if this node has changed state as a result of the time 126 * update 127 */ 128 @Override 129 public boolean updateTime(double curTime) throws SVGException 130 { 131// if (trackManager.getNumTracks() == 0) return false; 132 boolean changeState = super.updateTime(curTime); 133 134 //Get current values for parameters 135 StyleAttribute sty = new StyleAttribute(); 136 boolean shapeChange = false; 137 138 if (getStyle(sty.setName("fill-rule"))) 139 { 140 int newVal = sty.getStringValue().equals("evenodd") 141 ? GeneralPath.WIND_EVEN_ODD 142 : GeneralPath.WIND_NON_ZERO; 143 if (newVal != fillRule) 144 { 145 fillRule = newVal; 146 shapeChange = true; 147 } 148 } 149 150 if (getPres(sty.setName("points"))) 151 { 152 String newVal = sty.getStringValue(); 153 if (!newVal.equals(pointsStrn)) 154 { 155 pointsStrn = newVal; 156 shapeChange = true; 157 } 158 } 159 160 161 if (shapeChange) 162 { 163 build(); 164// buildPath(); 165// return true; 166 } 167 168 return changeState || shapeChange; 169 } 170}