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, 1:54 AM 035 */ 036package com.kitfox.svg; 037 038import com.kitfox.svg.xml.StyleAttribute; 039import java.awt.Graphics2D; 040import java.awt.Shape; 041import java.awt.geom.AffineTransform; 042import java.awt.geom.Rectangle2D; 043import java.net.URI; 044 045/** 046 * @author Mark McKay 047 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a> 048 */ 049public class Use extends ShapeElement 050{ 051 public static final String TAG_NAME = "use"; 052 053 float x = 0f; 054 float y = 0f; 055 float width = 1f; 056 float height = 1f; 057// SVGElement href = null; 058 URI href = null; 059 AffineTransform refXform; 060 061 /** 062 * Creates a new instance of LinearGradient 063 */ 064 public Use() 065 { 066 } 067 068 @Override 069 public String getTagName() 070 { 071 return TAG_NAME; 072 } 073 074 @Override 075 protected void build() throws SVGException 076 { 077 super.build(); 078 079 StyleAttribute sty = new StyleAttribute(); 080 081 if (getPres(sty.setName("x"))) 082 { 083 x = sty.getFloatValueWithUnits(); 084 } 085 086 if (getPres(sty.setName("y"))) 087 { 088 y = sty.getFloatValueWithUnits(); 089 } 090 091 if (getPres(sty.setName("width"))) 092 { 093 width = sty.getFloatValueWithUnits(); 094 } 095 096 if (getPres(sty.setName("height"))) 097 { 098 height = sty.getFloatValueWithUnits(); 099 } 100 101 if (getPres(sty.setName("xlink:href"))) 102 { 103 URI src = sty.getURIValue(getXMLBase()); 104 href = src; 105// href = diagram.getUniverse().getElement(src); 106 } 107 108 //Determine use offset/scale 109 refXform = new AffineTransform(); 110 refXform.translate(this.x, this.y); 111 } 112 113 @Override 114 public void render(Graphics2D g) throws SVGException 115 { 116 beginLayer(g); 117 118 //AffineTransform oldXform = g.getTransform(); 119 AffineTransform oldXform = g.getTransform(); 120 g.transform(refXform); 121 122 SVGElement ref = diagram.getUniverse().getElement(href); 123 124 if (ref == null || !(ref instanceof RenderableElement)) 125 { 126 return; 127 } 128 129 RenderableElement rendEle = (RenderableElement)ref; 130 rendEle.pushParentContext(this); 131 rendEle.render(g); 132 rendEle.popParentContext(); 133 134 g.setTransform(oldXform); 135 136 finishLayer(g); 137 } 138 139 @Override 140 public Shape getShape() 141 { 142 SVGElement ref = diagram.getUniverse().getElement(href); 143 if (ref instanceof ShapeElement) 144 { 145 Shape shape = ((ShapeElement) ref).getShape(); 146 shape = refXform.createTransformedShape(shape); 147 shape = shapeToParent(shape); 148 return shape; 149 } 150 151 return null; 152 } 153 154 @Override 155 public Rectangle2D getBoundingBox() throws SVGException 156 { 157 SVGElement ref = diagram.getUniverse().getElement(href); 158 if (ref instanceof ShapeElement) 159 { 160 ShapeElement shapeEle = (ShapeElement) ref; 161 shapeEle.pushParentContext(this); 162 Rectangle2D bounds = shapeEle.getBoundingBox(); 163 shapeEle.popParentContext(); 164 165 bounds = refXform.createTransformedShape(bounds).getBounds2D(); 166 bounds = boundsToParent(bounds); 167 168 return bounds; 169 } 170 171 return null; 172 } 173 174 /** 175 * Updates all attributes in this diagram associated with a time event. Ie, 176 * all attributes with track information. 177 * 178 * @return - true if this node has changed state as a result of the time 179 * update 180 */ 181 @Override 182 public boolean updateTime(double curTime) throws SVGException 183 { 184// if (trackManager.getNumTracks() == 0) return false; 185 boolean changeState = super.updateTime(curTime); 186 187 //Get current values for parameters 188 StyleAttribute sty = new StyleAttribute(); 189 boolean shapeChange = false; 190 191 if (getPres(sty.setName("x"))) 192 { 193 float newVal = sty.getFloatValueWithUnits(); 194 if (newVal != x) 195 { 196 x = newVal; 197 shapeChange = true; 198 } 199 } 200 201 if (getPres(sty.setName("y"))) 202 { 203 float newVal = sty.getFloatValueWithUnits(); 204 if (newVal != y) 205 { 206 y = newVal; 207 shapeChange = true; 208 } 209 } 210 211 if (getPres(sty.setName("width"))) 212 { 213 float newVal = sty.getFloatValueWithUnits(); 214 if (newVal != width) 215 { 216 width = newVal; 217 shapeChange = true; 218 } 219 } 220 221 if (getPres(sty.setName("height"))) 222 { 223 float newVal = sty.getFloatValueWithUnits(); 224 if (newVal != height) 225 { 226 height = newVal; 227 shapeChange = true; 228 } 229 } 230 231 if (getPres(sty.setName("xlink:href"))) 232 { 233 URI src = sty.getURIValue(getXMLBase()); 234// SVGElement newVal = diagram.getUniverse().getElement(src); 235 if (!src.equals(href)) 236 { 237 href = src; 238 shapeChange = true; 239 } 240 } 241 /* 242 if (getPres(sty.setName("xlink:href"))) 243 { 244 URI src = sty.getURIValue(getXMLBase()); 245 href = diagram.getUniverse().getElement(src); 246 } 247 248 //Determine use offset/scale 249 refXform = new AffineTransform(); 250 refXform.translate(this.x, this.y); 251 refXform.scale(this.width, this.height); 252 */ 253 if (shapeChange) 254 { 255 build(); 256 //Determine use offset/scale 257// refXform.setToTranslation(this.x, this.y); 258// refXform.scale(this.width, this.height); 259// return true; 260 } 261 262 return changeState || shapeChange; 263 } 264}