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21
24 package org.lobobrowser.util.gui;
25 import java.util.*;
26 import java.util.logging.*;
27 import java.awt.*;
28
29
32 public class ColorFactory {
33 private static final Logger logger = Logger.getLogger(ColorFactory.class.getName());
34 public static final Color TRANSPARENT = new Color(0, 0, 0, 0);
35 private static ColorFactory instance;
36 private final Map colorMap = new HashMap();
37
38 private ColorFactory() {
39 Map colorMap = this.colorMap;
40 synchronized(this) {
41 colorMap.put("transparent", new Color(0, 0, 0, 0));
43 colorMap.put("black", Color.black);
44 colorMap.put("blue", Color.blue);
45 colorMap.put("cyan", Color.cyan);
46 colorMap.put("darkGray", Color.darkGray);
47 colorMap.put("gray", Color.gray);
48 colorMap.put("green", new Color(0, 100, 0));
49 colorMap.put("magenta", Color.magenta);
50 colorMap.put("orange", Color.orange);
51 colorMap.put("pink", Color.pink);
52 colorMap.put("red", Color.red);
53 colorMap.put("white", Color.white);
54 colorMap.put("yellow", Color.yellow);
55 colorMap.put("grey", new Color(50, 100, 0));
57 colorMap.put("brown", new Color(100, 50, 0));
58 }
59 }
60 public static final ColorFactory getInstance() {
61 if(instance == null) {
62 synchronized(ColorFactory.class) {
63 if(instance == null) {
64 instance = new ColorFactory();
65 }
66 }
67 }
68 return instance;
69 }
70
71 private static final String  RGB_START = "rgb(";
72
73 public boolean isColor(String colorSpec) {
74 if(colorSpec.startsWith("#")) {
75 return true;
76 }
77 String normalSpec = colorSpec.toLowerCase();
78 if(normalSpec.startsWith(RGB_START)) {
79 return true;
80 }
81 synchronized(this) {
82 return colorMap.containsKey(normalSpec);
83 }
84 }
85
86 public Color getColor(String colorSpec) {
87 String normalSpec = colorSpec.toLowerCase();
88 synchronized(this) {
89 Color color = (Color) colorMap.get(normalSpec);
90 if(color == null) {
91 if(normalSpec.startsWith(RGB_START)) {
92 int endIdx = normalSpec.lastIndexOf(')');
93 String commaValues = endIdx == -1 ? normalSpec.substring(RGB_START.length()) : normalSpec.substring(RGB_START.length(), endIdx);
94 StringTokenizer tok = new StringTokenizer(commaValues, ",");
95 int r = 0, g = 0, b = 0;
96 if(tok.hasMoreTokens()) {
97 String rstr = tok.nextToken().trim();
98 try {
99 r = Integer.parseInt(rstr);
100 } catch(NumberFormatException nfe) {
101 }
103 if(tok.hasMoreTokens()) {
104 String gstr = tok.nextToken().trim();
105 try {
106 g = Integer.parseInt(gstr);
107 } catch(NumberFormatException nfe) {
108 }
110 if(tok.hasMoreTokens()) {
111 String bstr = tok.nextToken().trim();
112 try {
113 b = Integer.parseInt(bstr);
114 } catch(NumberFormatException nfe) {
115 }
117 }
118 }
119 }
120 color = new Color(r, g, b);
121 }
122 else if(normalSpec.startsWith("#")) {
123 int len = normalSpec.length();
124 int[] rgba = new int[4];
125 rgba[3] = 255;
126 for(int i = 0; i < rgba.length; i++)
127 {
128 int idx = 2 * i + 1;
129 if(idx < len)
130 {
131 String hexText = normalSpec.substring(idx, idx + Math.min(2, len - idx));
132 try {
133 rgba[i] = Integer.parseInt(hexText, 16);
134 } catch(NumberFormatException nfe) {
135 }
137 }
138 }
139 color = new Color(rgba[0], rgba[1], rgba[2], rgba[3]);
140 }
141 else {
142 if(logger.isLoggable(Level.INFO)) {
143 logger.warning("getColor(): Color spec [" + normalSpec + "] unknown.");
144 }
145 return Color.RED;
146 }
147 colorMap.put(normalSpec, color);
148 }
149 return color;
150 }
151 }
152
153
154 }
155 |
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