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Diffstat (limited to 'libjava/classpath/gnu/javax/swing/text/html/CharacterAttributeTranslator.java')
| -rw-r--r-- | libjava/classpath/gnu/javax/swing/text/html/CharacterAttributeTranslator.java | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/swing/text/html/CharacterAttributeTranslator.java b/libjava/classpath/gnu/javax/swing/text/html/CharacterAttributeTranslator.java new file mode 100644 index 000000000..d4e58eb5d --- /dev/null +++ b/libjava/classpath/gnu/javax/swing/text/html/CharacterAttributeTranslator.java @@ -0,0 +1,192 @@ +/* CharacterAttributeTranslator.java -- + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.javax.swing.text.html; + +import java.awt.Color; +import java.util.HashMap; +import java.util.StringTokenizer; + +import javax.swing.text.MutableAttributeSet; +import javax.swing.text.StyleConstants; +import javax.swing.text.html.HTML.Attribute; +import javax.swing.text.html.HTML.Tag; + +/** + * This is a small utility class to translate HTML character attributes to + * Swing StyleConstants + */ +public class CharacterAttributeTranslator +{ + /** + * Maps color name to its hex encoding. + */ + private static final HashMap colorMap = new HashMap(); + static + { + colorMap.put("aqua" , "#00FFFF"); + colorMap.put("blue" , "#0000FF"); + colorMap.put("black", "#000000"); + colorMap.put("fuchsia" , "#FF00FF"); + colorMap.put("gray" , "#808080"); + colorMap.put("green" , "#008000"); + colorMap.put("lime" , "#00FF00"); + colorMap.put("maroon" , "#800000"); + colorMap.put("navy" , "#000080"); + colorMap.put("olive" , "#808000"); + colorMap.put("purple" , "#800080"); + colorMap.put("red" , "#FF0000"); + colorMap.put("silver" , "#C0C0C0"); + colorMap.put("teal" , "#008080"); + colorMap.put("white" , "#FFFFFF"); + colorMap.put("yellow" , "#FFFF00"); + } + + /** + * Convert the color string represenation into java.awt.Color. The valid + * values are like "aqua" , "#00FFFF" or "rgb(1,6,44)". + * + * @param colorName the color to convert. + * @return the matching java.awt.color + */ + public static Color getColor(String colorName) + { + colorName = colorName.toLowerCase(); + try + { + if (colorName.startsWith("rgb")) + { + // rgb(red, green, blue) notation. + StringTokenizer st = new StringTokenizer(colorName, " ,()"); + String representation = st.nextToken(); + + // Return null if the representation is not supported. + if (! representation.equals("rgb")) + return null; + int red = Integer.parseInt(st.nextToken()); + int green = Integer.parseInt(st.nextToken()); + int blue = Integer.parseInt(st.nextToken()); + + return new Color(red, green, blue); + } + else + { + String s2 = (String) colorMap.get(colorName); + if (s2 == null) + s2 = colorName; + return Color.decode(s2); + } + } + catch (Exception nex) + { + // Can be either number format exception or illegal argument + // exception. + return null; + } + } + + /** + * Translate the HTML character attribute to the Swing style constant. + * + * @param charAttr the character attributes of the html tag + * @param t the html tag itself + * @param a the attribute set where the translated attributes will be stored + * + * @return true if some attributes were translated, false otherwise. + */ + public static boolean translateTag(MutableAttributeSet charAttr, + Tag t, MutableAttributeSet a) + { + if(t == Tag.FONT) + { + Object color = a.getAttribute(Attribute.COLOR); + if(color != null) + { + Color c = getColor(color.toString()); + if( c == null ) + return false; + charAttr.addAttribute(StyleConstants.Foreground, c); + return true; + } + + if(a.getAttribute(Attribute.SIZE) != null) + { + // FIXME + // charAttr.addAttribute(StyleConstants.FontSize, + // new java.lang.Integer(72)); + return true; + } + } + + if( t == Tag.B ) + { + charAttr.addAttribute(StyleConstants.Bold, Boolean.TRUE); + return true; + } + + if( t == Tag.I ) + { + charAttr.addAttribute(StyleConstants.Italic, Boolean.TRUE); + return true; + } + + if( t == Tag.U ) + { + charAttr.addAttribute(StyleConstants.Underline, Boolean.TRUE); + return true; + } + + if( t == Tag.STRIKE ) + { + charAttr.addAttribute(StyleConstants.StrikeThrough, Boolean.TRUE); + return true; + } + + if( t == Tag.SUP ) + { + charAttr.addAttribute(StyleConstants.Superscript, Boolean.TRUE); + return true; + } + + if( t == Tag.SUB ) + { + charAttr.addAttribute(StyleConstants.Subscript, Boolean.TRUE); + return true; + } + return false; + } +} |