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 February 20, 2004, 10:00 PM 035 */ 036package com.kitfox.svg; 037 038import com.kitfox.svg.pathcmd.BuildHistory; 039import com.kitfox.svg.pathcmd.PathCommand; 040import com.kitfox.svg.xml.StyleAttribute; 041import java.awt.Graphics2D; 042import java.awt.Shape; 043import java.awt.geom.AffineTransform; 044import java.awt.geom.GeneralPath; 045import java.awt.geom.Rectangle2D; 046import java.util.Iterator; 047 048/** 049 * Implements an embedded font. 050 * 051 * SVG specification: http://www.w3.org/TR/SVG/fonts.html 052 * 053 * @author Mark McKay 054 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a> 055 */ 056public class MissingGlyph extends ShapeElement 057{ 058 public static final String TAG_NAME = "missingglyph"; 059 060 //We may define a path 061 private Shape path = null; 062 //Alternately, we may have child graphical elements 063 private float horizAdvX = -1; //Inherits font's value if not set 064 private float vertOriginX = -1; //Inherits font's value if not set 065 private float vertOriginY = -1; //Inherits font's value if not set 066 private float vertAdvY = -1; //Inherits font's value if not set 067 068 /** 069 * Creates a new instance of Font 070 */ 071 public MissingGlyph() 072 { 073 } 074 075 @Override 076 public String getTagName() 077 { 078 return TAG_NAME; 079 } 080 081 /** 082 * Called after the start element but before the end element to indicate 083 * each child tag that has been processed 084 */ 085 @Override 086 public void loaderAddChild(SVGLoaderHelper helper, SVGElement child) throws SVGElementException 087 { 088 super.loaderAddChild(helper, child); 089 } 090 091 @Override 092 protected void build() throws SVGException 093 { 094 super.build(); 095 096 StyleAttribute sty = new StyleAttribute(); 097 098 String commandList = ""; 099 if (getPres(sty.setName("d"))) 100 { 101 commandList = sty.getStringValue(); 102 } 103 104 105 //If glyph path was specified, calculate it 106 if (commandList != null) 107 { 108 String fillRule = getStyle(sty.setName("fill-rule")) ? sty.getStringValue() : "nonzero"; 109 110 PathCommand[] commands = parsePathList(commandList); 111 112 GeneralPath buildPath = new GeneralPath( 113 fillRule.equals("evenodd") ? GeneralPath.WIND_EVEN_ODD : GeneralPath.WIND_NON_ZERO, 114 commands.length); 115 116 BuildHistory hist = new BuildHistory(); 117 118 for (int i = 0; i < commands.length; i++) 119 { 120 PathCommand cmd = commands[i]; 121 cmd.appendPath(buildPath, hist); 122 } 123 124 //Reflect glyph path to put it in user coordinate system 125 AffineTransform at = new AffineTransform(); 126 at.scale(1, -1); 127 path = at.createTransformedShape(buildPath); 128 } 129 130 131 //Read glyph spacing info 132 if (getPres(sty.setName("horiz-adv-x"))) 133 { 134 horizAdvX = sty.getFloatValue(); 135 } 136 137 if (getPres(sty.setName("vert-origin-x"))) 138 { 139 vertOriginX = sty.getFloatValue(); 140 } 141 142 if (getPres(sty.setName("vert-origin-y"))) 143 { 144 vertOriginY = sty.getFloatValue(); 145 } 146 147 if (getPres(sty.setName("vert-adv-y"))) 148 { 149 vertAdvY = sty.getFloatValue(); 150 } 151 } 152 153 public Shape getPath() 154 { 155 return path; 156 } 157 158 @Override 159 public void render(Graphics2D g) throws SVGException 160 { 161 //Do not push or pop stack 162 163 if (path != null) 164 { 165 renderShape(g, path); 166 } 167 168 Iterator<SVGElement> it = children.iterator(); 169 while (it.hasNext()) 170 { 171 SVGElement ele = it.next(); 172 if (ele instanceof RenderableElement) 173 { 174 ((RenderableElement) ele).render(g); 175 } 176 } 177 178 //Do not push or pop stack 179 } 180 181 public float getHorizAdvX() 182 { 183 if (horizAdvX == -1) 184 { 185 horizAdvX = ((Font) parent).getHorizAdvX(); 186 } 187 return horizAdvX; 188 } 189 190 public float getVertOriginX() 191 { 192 if (vertOriginX == -1) 193 { 194 vertOriginX = getHorizAdvX() / 2; 195 } 196 return vertOriginX; 197 } 198 199 public float getVertOriginY() 200 { 201 if (vertOriginY == -1) 202 { 203 vertOriginY = ((Font) parent).getFontFace().getAscent(); 204 } 205 return vertOriginY; 206 } 207 208 public float getVertAdvY() 209 { 210 if (vertAdvY == -1) 211 { 212 vertAdvY = ((Font) parent).getFontFace().getUnitsPerEm(); 213 } 214 return vertAdvY; 215 216 } 217 218 @Override 219 public Shape getShape() 220 { 221 if (path != null) 222 { 223 return shapeToParent(path); 224 } 225 return null; 226 } 227 228 @Override 229 public Rectangle2D getBoundingBox() throws SVGException 230 { 231 if (path != null) 232 { 233 return boundsToParent(includeStrokeInBounds(path.getBounds2D())); 234 } 235 return null; 236 } 237 238 /** 239 * Updates all attributes in this diagram associated with a time event. Ie, 240 * all attributes with track information. 241 * 242 * @return - true if this node has changed state as a result of the time 243 * update 244 */ 245 @Override 246 public boolean updateTime(double curTime) throws SVGException 247 { 248 //Fonts can't change 249 return false; 250 } 251 252 /** 253 * @param path the path to set 254 */ 255 public void setPath(Shape path) 256 { 257 this.path = path; 258 } 259 260 /** 261 * @param horizAdvX the horizAdvX to set 262 */ 263 public void setHorizAdvX(float horizAdvX) 264 { 265 this.horizAdvX = horizAdvX; 266 } 267 268 /** 269 * @param vertOriginX the vertOriginX to set 270 */ 271 public void setVertOriginX(float vertOriginX) 272 { 273 this.vertOriginX = vertOriginX; 274 } 275 276 /** 277 * @param vertOriginY the vertOriginY to set 278 */ 279 public void setVertOriginY(float vertOriginY) 280 { 281 this.vertOriginY = vertOriginY; 282 } 283 284 /** 285 * @param vertAdvY the vertAdvY to set 286 */ 287 public void setVertAdvY(float vertAdvY) 288 { 289 this.vertAdvY = vertAdvY; 290 } 291}