1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/**
* jQuery Color Utilities
* Written by Krinkle in 2011
* Released under the MIT and GPL licenses.
* Mostly based on other plugins and functions (linted and optimized a little).
* Sources cited inline.
*/
( function ( $ ) {
$.colorUtil = {
// Color Conversion function from highlightFade
// By Blair Mitchelmore
// http://jquery.offput.ca/highlightFade/
// Parse strings looking for color tuples [255,255,255]
getRGB : function ( color ) {
/*jshint boss:true */
var result;
// Check if we're already dealing with an array of colors
if ( color && $.isArray( color ) && color.length === 3 ) {
return color;
}
// Look for rgb(num,num,num)
if (result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(color)) {
return [parseInt(result[1],10), parseInt(result[2],10), parseInt(result[3],10)];
}
// Look for rgb(num%,num%,num%)
if (result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(color)) {
return [parseFloat(result[1],10)*2.55, parseFloat(result[2],10)*2.55, parseFloat(result[3])*2.55];
}
// Look for #a0b1c2
if (result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(color)) {
return [parseInt(result[1],16), parseInt(result[2],16), parseInt(result[3],16)];
}
// Look for #fff
if (result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(color)) {
return [parseInt(result[1]+result[1],16), parseInt(result[2]+result[2],16), parseInt(result[3]+result[3],16)];
}
// Look for rgba(0, 0, 0, 0) == transparent in Safari 3
if (result = /rgba\(0, 0, 0, 0\)/.exec(color)) {
return $.colorUtil.colors.transparent;
}
// Otherwise, we're most likely dealing with a named color
return $.colorUtil.colors[$.trim(color).toLowerCase()];
},
// Some named colors to work with
// From Interface by Stefan Petre
// http://interface.eyecon.ro/
colors: {
aqua: [0,255,255],
azure: [240,255,255],
beige: [245,245,220],
black: [0,0,0],
blue: [0,0,255],
brown: [165,42,42],
cyan: [0,255,255],
darkblue: [0,0,139],
darkcyan: [0,139,139],
darkgrey: [169,169,169],
darkgreen: [0,100,0],
darkkhaki: [189,183,107],
darkmagenta: [139,0,139],
darkolivegreen: [85,107,47],
darkorange: [255,140,0],
darkorchid: [153,50,204],
darkred: [139,0,0],
darksalmon: [233,150,122],
darkviolet: [148,0,211],
fuchsia: [255,0,255],
gold: [255,215,0],
green: [0,128,0],
indigo: [75,0,130],
khaki: [240,230,140],
lightblue: [173,216,230],
lightcyan: [224,255,255],
lightgreen: [144,238,144],
lightgrey: [211,211,211],
lightpink: [255,182,193],
lightyellow: [255,255,224],
lime: [0,255,0],
magenta: [255,0,255],
maroon: [128,0,0],
navy: [0,0,128],
olive: [128,128,0],
orange: [255,165,0],
pink: [255,192,203],
purple: [128,0,128],
violet: [128,0,128],
red: [255,0,0],
silver: [192,192,192],
white: [255,255,255],
yellow: [255,255,0],
transparent: [255,255,255]
},
/**
* http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript
* Converts an RGB color value to HSL. Conversion formula
* adapted from http://en.wikipedia.org/wiki/HSL_color_space.
* Assumes r, g, and b are contained in the set [0, 255] and
* returns h, s, and l in the set [0, 1].
*
* @param Number R The red color value
* @param Number G The green color value
* @param Number B The blue color value
* @return Array The HSL representation
*/
rgbToHsl: function ( R, G, B ) {
var d,
r = R / 255,
g = G / 255,
b = B / 255,
max = Math.max( r, g, b ), min = Math.min( r, g, b ),
h,
s,
l = (max + min) / 2;
if ( max === min ) {
// achromatic
h = s = 0;
} else {
d = max - min;
s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
switch ( max ) {
case r:
h = (g - b) / d + (g < b ? 6 : 0);
break;
case g:
h = (b - r) / d + 2;
break;
case b:
h = (r - g) / d + 4;
break;
}
h /= 6;
}
return [h, s, l];
},
/**
* http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript
* Converts an HSL color value to RGB. Conversion formula
* adapted from http://en.wikipedia.org/wiki/HSL_color_space.
* Assumes h, s, and l are contained in the set [0, 1] and
* returns r, g, and b in the set [0, 255].
*
* @param Number h The hue
* @param Number s The saturation
* @param Number l The lightness
* @return Array The RGB representation
*/
hslToRgb: function ( h, s, l ) {
var r, g, b, hue2rgb, q, p;
if ( s === 0 ) {
r = g = b = l; // achromatic
} else {
hue2rgb = function ( p, q, t ) {
if ( t < 0 ) {
t += 1;
}
if ( t > 1 ) {
t -= 1;
}
if ( t < 1/6 ) {
return p + (q - p) * 6 * t;
}
if ( t < 1/2 ) {
return q;
}
if ( t < 2/3 ) {
return p + (q - p) * (2/3 - t) * 6;
}
return p;
};
q = l < 0.5 ? l * (1 + s) : l + s - l * s;
p = 2 * l - q;
r = hue2rgb( p, q, h + 1/3 );
g = hue2rgb( p, q, h );
b = hue2rgb( p, q, h - 1/3 );
}
return [r * 255, g * 255, b * 255];
},
/**
* Get's a brighter or darker rgb() value string.
*
* @author Krinkle
*
* @example getCSSColorMod( 'red', +0.1 )
* @example getCSSColorMod( 'rgb(200,50,50)', -0.2 )
*
* @param Mixed currentColor current value in css
* @param Number mod wanted brightness modification between -1 and 1
* @return String 'rgb(r,g,b)'
*/
getColorBrightness: function ( currentColor, mod ) {
var rgbArr = $.colorUtil.getRGB( currentColor ),
hslArr = $.colorUtil.rgbToHsl(rgbArr[0], rgbArr[1], rgbArr[2] );
rgbArr = $.colorUtil.hslToRgb(hslArr[0], hslArr[1], hslArr[2]+mod);
return 'rgb(' +
[parseInt( rgbArr[0], 10), parseInt( rgbArr[1], 10 ), parseInt( rgbArr[2], 10 )].join( ',' ) +
')';
}
};
}( jQuery ) );
|