1
22
23 package com.liferay.util;
24
25 import com.liferay.portal.kernel.util.GetterUtil;
26 import com.liferay.portal.kernel.util.StringMaker;
27
28 import java.awt.Color;
29
30
38 public class ColorUtil {
39
40 public static Color blend(int[] color1, int[] color2, double ratio) {
41 Color blended = new Color(
42 (int)(((color2[0]-color1[0]) * ratio) + color1[0]),
43 (int)(((color2[1]-color1[1]) * ratio) + color1[1]),
44 (int)(((color2[2]-color1[2]) * ratio) + color1[2]));
45
46 return blended;
47 }
48
49 public static Color blend (Color color1, Color color2, double ratio){
50 int[] rgb1 = {color1.getRed(), color1.getGreen(), color1.getBlue()};
51 int[] rgb2 = {color2.getRed(), color2.getGreen(), color2.getBlue()};
52
53 return blend(rgb1, rgb2, ratio);
54 }
55
56 public static Color darker(int[] color, double ratio) {
57 Color darkened = new Color(
58 (int)(color[0] - (color[0] * ratio)),
59 (int)(color[1] - (color[1] * ratio)),
60 (int)(color[2] - (color[2] * ratio)));
61
62 return darkened;
63 }
64
65 public static String getHex(int[] rgb) {
66 StringMaker sm = new StringMaker();
67
68 sm.append("#");
69
70 sm.append(
71 _KEY.substring(
72 (int)Math.floor(rgb[0] / 16),
73 (int)Math.floor(rgb[0] / 16) + 1));
74
75 sm.append(_KEY.substring(rgb[0] % 16, (rgb[0] % 16) + 1));
76
77 sm.append(
78 _KEY.substring(
79 (int)Math.floor(rgb[1] / 16),
80 (int)Math.floor(rgb[1] / 16) + 1));
81
82 sm.append(_KEY.substring(rgb[1] % 16, (rgb[1] % 16) + 1));
83
84 sm.append(
85 _KEY.substring(
86 (int)Math.floor(rgb[2] / 16),
87 (int)Math.floor(rgb[2] / 16) + 1));
88
89 sm.append(_KEY.substring(rgb[2] % 16, (rgb[2] % 16) + 1));
90
91 return sm.toString();
92 }
93
94 public static int[] getRGB(String hex) {
95 if (hex.startsWith("#")) {
96 hex = hex.substring(1, hex.length()).toUpperCase();
97 }
98 else {
99 hex = hex.toUpperCase();
100 }
101
102 int[] hexArray = new int[6];
103
104 if (hex.length() == 6) {
105 char[] c = hex.toCharArray();
106
107 for (int i = 0; i < hex.length(); i++) {
108 if (c[i] == 'A') {
109 hexArray[i] = 10;
110 }
111 else if (c[i] == 'B') {
112 hexArray[i] = 11;
113 }
114 else if (c[i] == 'C') {
115 hexArray[i] = 12;
116 }
117 else if (c[i] == 'D') {
118 hexArray[i] = 13;
119 }
120 else if (c[i] == 'E') {
121 hexArray[i] = 14;
122 }
123 else if (c[i] == 'F') {
124 hexArray[i] = 15;
125 }
126 else {
127 hexArray[i] =
128 GetterUtil.getInteger(new Character(c[i]).toString());
129 }
130 }
131 }
132
133 int[] rgb = new int[3];
134 rgb[0] = (hexArray[0] * 16) + hexArray[1];
135 rgb[1] = (hexArray[2] * 16) + hexArray[3];
136 rgb[2] = (hexArray[4] * 16) + hexArray[5];
137
138 return rgb;
139 }
140
141 public static Color lighter(int[] color, double ratio) {
142 Color lightened = new Color(
143 (int)(((0xFF - color[0]) * ratio) + color[0]),
144 (int)(((0xFF - color[1]) * ratio) + color[1]),
145 (int)(((0xFF - color[2]) * ratio) + color[2]));
146
147 return lightened;
148 }
149
150 private static final String _KEY = "0123456789ABCDEF";
151
152 }