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 public String getTagName() 065 { 066 return TAG_NAME; 067 } 068 069 protected void build() throws SVGException 070 { 071 super.build(); 072 073 StyleAttribute sty = new StyleAttribute(); 074 075 if (getPres(sty.setName("points"))) 076 { 077 pointsStrn = sty.getStringValue(); 078 } 079 080 String fillRuleStrn = getStyle(sty.setName("fill-rule")) ? sty.getStringValue() : "nonzero"; 081 fillRule = fillRuleStrn.equals("evenodd") ? GeneralPath.WIND_EVEN_ODD : GeneralPath.WIND_NON_ZERO; 082 083 buildPath(); 084 } 085 086 protected void buildPath() 087 { 088 float[] points = XMLParseUtil.parseFloatList(pointsStrn); 089 path = new GeneralPath(fillRule, points.length / 2); 090 091 path.moveTo(points[0], points[1]); 092 for (int i = 2; i < points.length; i += 2) 093 { 094 path.lineTo(points[i], points[i + 1]); 095 } 096 path.closePath(); 097 } 098 099 public void render(Graphics2D g) throws SVGException 100 { 101 beginLayer(g); 102 renderShape(g, path); 103 finishLayer(g); 104 } 105 106 public Shape getShape() 107 { 108 return shapeToParent(path); 109 } 110 111 public Rectangle2D getBoundingBox() throws SVGException 112 { 113 return boundsToParent(includeStrokeInBounds(path.getBounds2D())); 114 } 115 116 /** 117 * Updates all attributes in this diagram associated with a time event. Ie, 118 * all attributes with track information. 119 * 120 * @return - true if this node has changed state as a result of the time 121 * update 122 */ 123 public boolean updateTime(double curTime) throws SVGException 124 { 125// if (trackManager.getNumTracks() == 0) return false; 126 boolean changeState = super.updateTime(curTime); 127 128 //Get current values for parameters 129 StyleAttribute sty = new StyleAttribute(); 130 boolean shapeChange = false; 131 132 if (getStyle(sty.setName("fill-rule"))) 133 { 134 int newVal = sty.getStringValue().equals("evenodd") 135 ? GeneralPath.WIND_EVEN_ODD 136 : GeneralPath.WIND_NON_ZERO; 137 if (newVal != fillRule) 138 { 139 fillRule = newVal; 140 shapeChange = true; 141 } 142 } 143 144 if (getPres(sty.setName("points"))) 145 { 146 String newVal = sty.getStringValue(); 147 if (!newVal.equals(pointsStrn)) 148 { 149 pointsStrn = newVal; 150 shapeChange = true; 151 } 152 } 153 154 155 if (shapeChange) 156 { 157 build(); 158// buildPath(); 159// return true; 160 } 161 162 return changeState || shapeChange; 163 } 164}