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 27, 2004, 2:53 PM 035 */ 036 037package com.kitfox.svg.xml; 038 039import com.kitfox.svg.SVGConst; 040import java.awt.*; 041import java.io.*; 042import java.net.*; 043import java.util.logging.Level; 044import java.util.logging.Logger; 045import java.util.regex.*; 046 047/** 048 * @author Mark McKay 049 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a> 050 */ 051public class StyleAttribute implements Serializable 052{ 053 public static final long serialVersionUID = 0; 054 055 static final Pattern patternUrl = Pattern.compile("\\s*url\\((.*)\\)\\s*"); 056 static final Matcher matchFpNumUnits = Pattern.compile("\\s*([-+]?((\\d*\\.\\d+)|(\\d+))([-+]?[eE]\\d+)?)\\s*(px|cm|mm|in|pc|pt|em|ex)\\s*").matcher(""); 057 058 String name; 059 String stringValue; 060 061 boolean colorCompatable = false; 062 boolean urlCompatable = false; 063 064 /** Creates a new instance of StyleAttribute */ 065 public StyleAttribute() 066 { 067 this(null, null); 068 } 069 070 public StyleAttribute(String name) 071 { 072 this.name = name; 073 stringValue = null; 074 } 075 076 public StyleAttribute(String name, String stringValue) 077 { 078 this.name = name; 079 this.stringValue = stringValue; 080 } 081 082 public String getName() { 083 return name; 084 } 085 086 public StyleAttribute setName(String name) 087 { 088 this.name = name; 089 return this; 090 } 091 092 public String getStringValue() 093 { 094 return stringValue; 095 } 096 097 public String[] getStringList() 098 { 099 return XMLParseUtil.parseStringList(stringValue); 100 } 101 102 public void setStringValue(String value) 103 { 104 stringValue = value; 105 } 106 107 public boolean getBooleanValue() { 108 return stringValue.toLowerCase().equals("true"); 109 } 110 111 public int getIntValue() { 112 return XMLParseUtil.findInt(stringValue); 113 } 114 115 public int[] getIntList() { 116 return XMLParseUtil.parseIntList(stringValue); 117 } 118 119 public double getDoubleValue() { 120 return XMLParseUtil.findDouble(stringValue); 121 } 122 123 public double[] getDoubleList() { 124 return XMLParseUtil.parseDoubleList(stringValue); 125 } 126 127 public float getFloatValue() { 128 return XMLParseUtil.findFloat(stringValue); 129 } 130 131 public float[] getFloatList() { 132 return XMLParseUtil.parseFloatList(stringValue); 133 } 134 135 public float getRatioValue() { 136 return (float)XMLParseUtil.parseRatio(stringValue); 137// try { return Float.parseFloat(stringValue); } 138// catch (Exception e) {} 139// return 0f; 140 } 141 142 public String getUnits() { 143 matchFpNumUnits.reset(stringValue); 144 if (!matchFpNumUnits.matches()) return null; 145 return matchFpNumUnits.group(6); 146 } 147 148 public NumberWithUnits getNumberWithUnits() { 149 return XMLParseUtil.parseNumberWithUnits(stringValue); 150 } 151 152 public float getFloatValueWithUnits() 153 { 154 NumberWithUnits number = getNumberWithUnits(); 155 return convertUnitsToPixels(number.getUnits(), number.getValue()); 156 } 157 158 static public float convertUnitsToPixels(int unitType, float value) 159 { 160 if (unitType == NumberWithUnits.UT_UNITLESS || unitType == NumberWithUnits.UT_PERCENT) 161 { 162 return value; 163 } 164 165 float pixPerInch; 166 try 167 { 168 pixPerInch = (float)Toolkit.getDefaultToolkit().getScreenResolution(); 169 } 170 catch (HeadlessException ex) 171 { 172 //default to 72 dpi 173 pixPerInch = 72; 174 } 175 final float inchesPerCm = .3936f; 176 177 switch (unitType) 178 { 179 case NumberWithUnits.UT_IN: 180 return value * pixPerInch; 181 case NumberWithUnits.UT_CM: 182 return value * inchesPerCm * pixPerInch; 183 case NumberWithUnits.UT_MM: 184 return value * .1f * inchesPerCm * pixPerInch; 185 case NumberWithUnits.UT_PT: 186 return value * (1f / 72f) * pixPerInch; 187 case NumberWithUnits.UT_PC: 188 return value * (1f / 6f) * pixPerInch; 189 } 190 191 return value; 192 } 193 194 public Color getColorValue() 195 { 196 return ColorTable.parseColor(stringValue); 197 } 198 199 public String parseURLFn() 200 { 201 Matcher matchUrl = patternUrl.matcher(stringValue); 202 if (!matchUrl.matches()) 203 { 204 return null; 205 } 206 return matchUrl.group(1); 207 } 208 209 public URL getURLValue(URL docRoot) 210 { 211 String fragment = parseURLFn(); 212 if (fragment == null) return null; 213 try { 214 return new URL(docRoot, fragment); 215 } 216 catch (Exception e) 217 { 218 Logger.getLogger(SVGConst.SVG_LOGGER).log(Level.WARNING, null, e); 219 return null; 220 } 221 } 222 223 public URL getURLValue(URI docRoot) 224 { 225 String fragment = parseURLFn(); 226 if (fragment == null) return null; 227 try { 228 URI ref = docRoot.resolve(fragment); 229 return ref.toURL(); 230 } 231 catch (Exception e) 232 { 233 Logger.getLogger(SVGConst.SVG_LOGGER).log(Level.WARNING, null, e); 234 return null; 235 } 236 } 237 238 public URI getURIValue() 239 { 240 return getURIValue(null); 241 } 242 243 /** 244 * Parse this sytle attribute as a URL and return it in URI form resolved 245 * against the passed base. 246 * 247 * @param base - URI to resolve against. If null, will return value without 248 * attempting to resolve it. 249 */ 250 public URI getURIValue(URI base) 251 { 252 try { 253 String fragment = parseURLFn(); 254 if (fragment == null) fragment = stringValue.replaceAll("\\s+", ""); 255 if (fragment == null) return null; 256 257 //====================== 258 //This gets around a bug in the 1.5.0 JDK 259 if (Pattern.matches("[a-zA-Z]:!\\\\.*", fragment)) 260 { 261 File file = new File(fragment); 262 return file.toURI(); 263 } 264 //====================== 265 266 //[scheme:]scheme-specific-part[#fragment] 267 268 URI uriFrag = new URI(fragment); 269 if (uriFrag.isAbsolute()) 270 { 271 //Has scheme 272 return uriFrag; 273 } 274 275 if (base == null) return uriFrag; 276 277 URI relBase = new URI(null, base.getSchemeSpecificPart(), null); 278 URI relUri; 279 if (relBase.isOpaque()) 280 { 281 relUri = new URI(null, base.getSchemeSpecificPart(), uriFrag.getFragment()); 282 } 283 else 284 { 285 relUri = relBase.resolve(uriFrag); 286 } 287 return new URI(base.getScheme() + ":" + relUri); 288 } 289 catch (Exception e) 290 { 291 Logger.getLogger(SVGConst.SVG_LOGGER).log(Level.WARNING, null, e); 292 return null; 293 } 294 } 295 296 public static void main(String[] args) 297 { 298 try 299 { 300 URI uri = new URI("jar:http://www.kitfox.com/jackal/jackal.jar!/res/doc/about.svg"); 301 uri = uri.resolve("#myFragment"); 302 303 System.err.println(uri.toString()); 304 305 uri = new URI("http://www.kitfox.com/jackal/jackal.html"); 306 uri = uri.resolve("#myFragment"); 307 308 System.err.println(uri.toString()); 309 } 310 catch (Exception e) 311 { 312 Logger.getLogger(SVGConst.SVG_LOGGER).log(Level.WARNING, null, e); 313 } 314 } 315}