Source for java.awt.font.TextAttribute

   1: /* TextAttribute.java --
   2:    Copyright (C) 2003, 2004, 2005  Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package java.awt.font;
  40: 
  41: import java.io.InvalidObjectException;
  42: import java.text.AttributedCharacterIterator;
  43: 
  44: /**
  45:  * Attributes (and associated values) that can be used to define an
  46:  * {@link java.text.AttributedString}.
  47:  */
  48: public final class TextAttribute extends AttributedCharacterIterator.Attribute
  49: {
  50:   private static final long serialVersionUID = 7744112784117861702L;
  51:   
  52:   /** A key for the background paint attribute. */
  53:   public static final TextAttribute BACKGROUND =
  54:     new TextAttribute("background");
  55:   
  56:   /** A key for the BIDI_EMBEDDING attribute. */
  57:   public static final TextAttribute BIDI_EMBEDDING =
  58:     new TextAttribute("bidi_embedding");
  59:   
  60:   /** A key for the CHAR_REPLACEMENT attribute. */
  61:   public static final TextAttribute CHAR_REPLACEMENT =
  62:     new TextAttribute("char_replacement");
  63:   
  64:   /** A key for the FAMILY attribute. */
  65:   public static final TextAttribute FAMILY = new TextAttribute("family");
  66:   
  67:   /** A key for the font attribute. */
  68:   public static final TextAttribute FONT = new TextAttribute("font");
  69:   
  70:   /** A key for the foreground paint attribute. */
  71:   public static final TextAttribute FOREGROUND = 
  72:     new TextAttribute("foreground");
  73:   
  74:   /** A key for the INPUT_METHOD_HIGHLIGHT attribute. */
  75:   public static final TextAttribute INPUT_METHOD_HIGHLIGHT =
  76:     new TextAttribute("input method highlight");
  77:   
  78:   /** A key for the INPUT_METHOD_UNDERLINE attribute. */
  79:   public static final TextAttribute INPUT_METHOD_UNDERLINE =
  80:     new TextAttribute("input method underline");
  81:   
  82:   /** A key for the text justification attribute. */
  83:   public static final TextAttribute JUSTIFICATION =
  84:     new TextAttribute("justification");
  85:   
  86:   /** 
  87:    * A value that can be used with the {@link #JUSTIFICATION} attribute to
  88:    * indicate full justification of the text. 
  89:    */
  90:   public static final Float JUSTIFICATION_FULL = new Float(1.0);
  91:   
  92:   /** 
  93:    * A value that can be used with the {@link #JUSTIFICATION} attribute to
  94:    * indicate no justification of the text. 
  95:    */
  96:   public static final Float JUSTIFICATION_NONE = new Float(0.0);
  97:   
  98:   /** A key for the NUMERIC_SHAPING attribute. */
  99:   public static final TextAttribute NUMERIC_SHAPING =
 100:     new TextAttribute("numeric_shaping");
 101:   
 102:   /** A key for the POSTURE attribute. */
 103:   public static final TextAttribute POSTURE = new TextAttribute("posture");
 104:   
 105:   /** A value that can be used with the {@link #POSTURE} attribute. */
 106:   public static final Float POSTURE_OBLIQUE = new Float(0.2);
 107:   
 108:   /** A value that can be used with the {@link #POSTURE} attribute. */
 109:   public static final Float POSTURE_REGULAR = new Float(0.0);
 110:   
 111:   /** A key for the RUN_DIRECTION attribute. */
 112:   public static final TextAttribute RUN_DIRECTION =
 113:     new TextAttribute("run_direction");
 114:   
 115:   /** A value that can be used with the {@link #RUN_DIRECTION} attribute. */
 116:   public static final Boolean RUN_DIRECTION_LTR = Boolean.FALSE;
 117:   
 118:   /** A value that can be used with the {@link #RUN_DIRECTION} attribute. */
 119:   public static final Boolean RUN_DIRECTION_RTL = Boolean.TRUE;
 120:   
 121:   /** A key for the text size attribute. */
 122:   public static final TextAttribute SIZE = new TextAttribute("size");
 123:   
 124:   /** A key for the STRIKETHROUGH attribute. */
 125:   public static final TextAttribute STRIKETHROUGH =
 126:     new TextAttribute("strikethrough");
 127:   
 128:   /** A value that can be used with the {@link #STRIKETHROUGH} attribute. */
 129:   public static final Boolean STRIKETHROUGH_ON = Boolean.TRUE;
 130:   
 131:   /** A key for the SUPERSCRIPT attribute. */
 132:   public static final TextAttribute SUPERSCRIPT =
 133:     new TextAttribute("superscript");
 134:   
 135:   /** A value that can be used with the {@link #SUPERSCRIPT} attribute. */
 136:   public static final Integer SUPERSCRIPT_SUB = new Integer(-1);
 137:   
 138:   /** A value that can be used with the {@link #SUPERSCRIPT} attribute. */
 139:   public static final Integer SUPERSCRIPT_SUPER = new Integer(1);
 140:   
 141:   /** A key for the SWAP_COLORS attribute. */
 142:   public static final TextAttribute SWAP_COLORS =
 143:     new TextAttribute("swap_colors");
 144:   
 145:   /** A value that can be used with the {@link #SWAP_COLORS} attribute. */
 146:   public static final Boolean SWAP_COLORS_ON = Boolean.TRUE;
 147:   
 148:   /** A key for the TRANFORM attribute. */
 149:   public static final TextAttribute TRANSFORM = new TextAttribute("transform");
 150:   
 151:   /** A key for the UNDERLINE attribute. */
 152:   public static final TextAttribute UNDERLINE = new TextAttribute("underline");
 153:   
 154:   /** A value that can be used with the {@link #UNDERLINE} attribute. */
 155:   public static final Integer UNDERLINE_LOW_DASHED = new Integer(5);
 156:   
 157:   /** A value that can be used with the {@link #UNDERLINE} attribute. */
 158:   public static final Integer UNDERLINE_LOW_DOTTED = new Integer(3);
 159:   
 160:   /** A value that can be used with the {@link #UNDERLINE} attribute. */
 161:   public static final Integer UNDERLINE_LOW_GRAY = new Integer(4);
 162:   
 163:   /** A value that can be used with the {@link #UNDERLINE} attribute. */
 164:   public static final Integer UNDERLINE_LOW_ONE_PIXEL = new Integer(1);
 165:   
 166:   /** A value that can be used with the {@link #UNDERLINE} attribute. */
 167:   public static final Integer UNDERLINE_LOW_TWO_PIXEL = new Integer(2);
 168:   
 169:   /** A value that can be used with the {@link #UNDERLINE} attribute. */
 170:   public static final Integer UNDERLINE_ON = new Integer(0);
 171:   
 172:   /** A key for the WEIGHT attribute. */
 173:   public static final TextAttribute WEIGHT = new TextAttribute("weight");
 174:   
 175:   /** A value that can be used with the {@link #WEIGHT} attribute. */
 176:   public static final Float WEIGHT_BOLD = new Float(2.0);
 177:   
 178:   /** A value that can be used with the {@link #WEIGHT} attribute. */
 179:   public static final Float WEIGHT_DEMIBOLD = new Float(1.75);
 180:   
 181:   /** A value that can be used with the {@link #WEIGHT} attribute. */
 182:   public static final Float WEIGHT_DEMILIGHT = new Float(0.875);
 183:   
 184:   /** A value that can be used with the {@link #WEIGHT} attribute. */
 185:   public static final Float WEIGHT_EXTRA_LIGHT = new Float(0.5);
 186:   
 187:   /** A value that can be used with the {@link #WEIGHT} attribute. */
 188:   public static final Float WEIGHT_EXTRABOLD = new Float(2.5);
 189:   
 190:   /** A value that can be used with the {@link #WEIGHT} attribute. */
 191:   public static final Float WEIGHT_HEAVY = new Float(2.25);
 192:   
 193:   /** A value that can be used with the {@link #WEIGHT} attribute. */
 194:   public static final Float WEIGHT_LIGHT = new Float(0.75);
 195:   
 196:   /** A value that can be used with the {@link #WEIGHT} attribute. */
 197:   public static final Float WEIGHT_MEDIUM = new Float(1.5);
 198:   
 199:   /** A value that can be used with the {@link #WEIGHT} attribute. */
 200:   public static final Float WEIGHT_REGULAR = new Float(1.0);
 201:   
 202:   /** A value that can be used with the {@link #WEIGHT} attribute. */
 203:   public static final Float WEIGHT_SEMIBOLD = new Float(1.25);
 204:   
 205:   /** A value that can be used with the {@link #WEIGHT} attribute. */
 206:   public static final Float WEIGHT_ULTRABOLD = new Float(2.75);
 207:   
 208:   /** A key for the WIDTH attribute. */
 209:   public static final TextAttribute WIDTH = new TextAttribute("width");
 210:   
 211:   /** A value that can be used with the {@link #WIDTH} attribute. */
 212:   public static final Float WIDTH_CONDENSED = new Float(0.75);
 213:   
 214:   /** A value that can be used with the {@link #WIDTH} attribute. */
 215:   public static final Float WIDTH_EXTENDED = new Float(1.5);
 216:   
 217:   /** A value that can be used with the {@link #WIDTH} attribute. */
 218:   public static final Float WIDTH_REGULAR = new Float(1.0);
 219:   
 220:   /** A value that can be used with the {@link #WIDTH} attribute. */
 221:   public static final Float WIDTH_SEMI_CONDENSED = new Float(0.875);
 222:   
 223:   /** A value that can be used with the {@link #WIDTH} attribute. */
 224:   public static final Float WIDTH_SEMI_EXTENDED = new Float(1.25);
 225:           
 226:   /**
 227:    * Creates a new attribute.
 228:    * 
 229:    * @param name  the name.
 230:    */
 231:   protected TextAttribute(String name)
 232:   {
 233:     super(name);
 234:   }
 235:   
 236:   /**
 237:    * After deserialization, this method ensures that only one instance of
 238:    * each attribute is used.
 239:    * 
 240:    * @return The (single) attribute instance.
 241:    * 
 242:    * @throws InvalidObjectException if the attribute is not recognised.
 243:    */
 244:   protected Object readResolve()
 245:     throws InvalidObjectException
 246:   {
 247:     if (this.getName().equals("background"))
 248:       return BACKGROUND;
 249: 
 250:     if (this.getName().equals("bidi_embedding"))
 251:       return BIDI_EMBEDDING;
 252: 
 253:     if (this.getName().equals("char_replacement"))
 254:       return CHAR_REPLACEMENT;
 255: 
 256:     if (this.getName().equals("family"))
 257:       return FAMILY;
 258: 
 259:     if (this.getName().equals("font"))
 260:       return FONT;
 261: 
 262:     if (this.getName().equals("foreground"))
 263:       return FOREGROUND;
 264: 
 265:     if (this.getName().equals("input method highlight"))
 266:       return INPUT_METHOD_HIGHLIGHT;
 267: 
 268:     if (this.getName().equals("input method underline"))
 269:       return INPUT_METHOD_UNDERLINE;
 270: 
 271:     if (this.getName().equals("justification"))
 272:       return JUSTIFICATION;
 273: 
 274:     if (this.getName().equals("numeric_shaping"))
 275:       return NUMERIC_SHAPING;
 276: 
 277:     if (this.getName().equals("posture"))
 278:       return POSTURE;
 279: 
 280:     if (this.getName().equals("run_direction"))
 281:       return RUN_DIRECTION;
 282: 
 283:     if (this.getName().equals("size"))
 284:       return SIZE;
 285: 
 286:     if (this.getName().equals("strikethrough"))
 287:       return STRIKETHROUGH;
 288: 
 289:     if (this.getName().equals("superscript"))
 290:       return SUPERSCRIPT;
 291: 
 292:     if (this.getName().equals("swap_colors"))
 293:       return SWAP_COLORS;
 294: 
 295:     if (this.getName().equals("transform"))
 296:       return TRANSFORM;
 297: 
 298:     if (this.getName().equals("underline"))
 299:       return UNDERLINE;
 300: 
 301:     if (this.getName().equals("weight"))
 302:       return WEIGHT;
 303: 
 304:     if (this.getName().equals("width"))
 305:       return WIDTH;
 306: 
 307:     throw new InvalidObjectException("Can't resolve Attribute: " + getName());
 308:   }
 309: }