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      1 package com.jme3.font;
      2 
      3 import com.jme3.math.ColorRGBA;
      4 import java.util.LinkedList;
      5 import java.util.regex.Matcher;
      6 import java.util.regex.Pattern;
      7 
      8 /**
      9  * Contains the color information tagged in a text string
     10  * Format: \#rgb#
     11  *         \#rgba#
     12  *         \#rrggbb#
     13  *         \#rrggbbaa#
     14  * @author YongHoon
     15  */
     16 class ColorTags {
     17     private static final Pattern colorPattern = Pattern.compile("\\\\#([0-9a-fA-F]{8})#|\\\\#([0-9a-fA-F]{6})#|" +
     18     		                                                    "\\\\#([0-9a-fA-F]{4})#|\\\\#([0-9a-fA-F]{3})#");
     19     private LinkedList<Range> colors = new LinkedList<Range>();
     20     private String text;
     21 
     22     ColorTags() { }
     23 
     24     ColorTags(String seq) {
     25         setText(seq);
     26     }
     27 
     28     /**
     29      * @return text without color tags
     30      */
     31     String getPlainText() {
     32         return text;
     33     }
     34 
     35     LinkedList<Range> getTags() {
     36         return colors;
     37     }
     38 
     39     void setText(final String charSeq) {
     40         colors.clear();
     41         if (charSeq == null) {
     42             return;
     43         }
     44         Matcher m = colorPattern.matcher(charSeq);
     45         if (m.find()) {
     46             StringBuilder builder = new StringBuilder(charSeq.length()-7);
     47             int startIndex = 0;
     48             do {
     49                 String colorStr = null;
     50                 for (int i = 1; i <= 4 && colorStr==null; i++) {
     51                     colorStr = m.group(i);
     52                 }
     53                 builder.append(charSeq.subSequence(startIndex, m.start()));
     54                 Range range = new Range(builder.length(), colorStr);
     55                 startIndex = m.end();
     56                 colors.add(range);
     57             } while (m.find());
     58             builder.append(charSeq.subSequence(startIndex, charSeq.length()));
     59             text = builder.toString();
     60         } else {
     61             text = charSeq;
     62         }
     63     }
     64 
     65     class Range {
     66         int start;
     67         ColorRGBA color;
     68         Range(int start, String colorStr) {
     69             this.start = start;
     70             this.color = new ColorRGBA();
     71             if (colorStr.length() >= 6) {
     72                 color.set(Integer.parseInt(colorStr.subSequence(0,2).toString(), 16) / 255f,
     73                           Integer.parseInt(colorStr.subSequence(2,4).toString(), 16) / 255f,
     74                           Integer.parseInt(colorStr.subSequence(4,6).toString(), 16) / 255f,
     75                           1);
     76                 if (colorStr.length() == 8) {
     77                     color.a = Integer.parseInt(colorStr.subSequence(6,8).toString(), 16) / 255f;
     78                 }
     79             } else {
     80                 color.set(Integer.parseInt(Character.toString(colorStr.charAt(0)), 16) / 15f,
     81                           Integer.parseInt(Character.toString(colorStr.charAt(1)), 16) / 15f,
     82                           Integer.parseInt(Character.toString(colorStr.charAt(2)), 16) / 15f,
     83                           1);
     84                 if (colorStr.length() == 4) {
     85                     color.a = Integer.parseInt(Character.toString(colorStr.charAt(3)), 16) / 15f;
     86                 }
     87             }
     88 
     89         }
     90     }
     91 }
     92