ceph/src/pybind/mgr/dashboard/static/AdminLTE-2.3.7/plugins/flot/jquery.colorhelpers.js

   1 /* Plugin for jQuery for working with colors.
   2  *
   3  * Version 1.1.
   4  *
   5  * Inspiration from jQuery color animation plugin by John Resig.
   6  *
   7  * Released under the MIT license by Ole Laursen, October 2009.
   8  *
   9  * Examples:
  10  *
  11  *   $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
  12  *   var c = $.color.extract($("#mydiv"), 'background-color');
  13  *   console.log(c.r, c.g, c.b, c.a);
  14  *   $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
  15  *
  16  * Note that .scale() and .add() return the same modified object
  17  * instead of making a new one.
  18  *
  19  * V. 1.1: Fix error handling so e.g. parsing an empty string does
  20  * produce a color rather than just crashing.
  21  */
  22
  23 (function($) {
  24     $.color = {};
  25
  26     // construct color object with some convenient chainable helpers
  27     $.color.make = function (r, g, b, a) {
  28         var o = {};
  29         o.r = r || 0;
  30         o.g = g || 0;
  31         o.b = b || 0;
  32         o.a = a != null ? a : 1;
  33
  34         o.add = function (c, d) {
  35             for (var i = 0; i < c.length; ++i)
  36                 o[c.charAt(i)] += d;
  37             return o.normalize();
  38         };
  39
  40         o.scale = function (c, f) {
  41             for (var i = 0; i < c.length; ++i)
  42                 o[c.charAt(i)] *= f;
  43             return o.normalize();
  44         };
  45
  46         o.toString = function () {
  47             if (o.a >= 1.0) {
  48                 return "rgb("+[o.r, o.g, o.b].join(",")+")";
  49             } else {
  50                 return "rgba("+[o.r, o.g, o.b, o.a].join(",")+")";
  51             }
  52         };
  53
  54         o.normalize = function () {
  55             function clamp(min, value, max) {
  56                 return value < min ? min: (value > max ? max: value);
  57             }
  58
  59             o.r = clamp(0, parseInt(o.r), 255);
  60             o.g = clamp(0, parseInt(o.g), 255);
  61             o.b = clamp(0, parseInt(o.b), 255);
  62             o.a = clamp(0, o.a, 1);
  63             return o;
  64         };
  65
  66         o.clone = function () {
  67             return $.color.make(o.r, o.b, o.g, o.a);
  68         };
  69
  70         return o.normalize();
  71     };
  72
  73     // extract CSS color property from element, going up in the DOM
  74     // if it's "transparent"
  75     $.color.extract = function (elem, css) {
  76         var c;
  77
  78         do {
  79             c = elem.css(css).toLowerCase();
  80             // keep going until we find an element that has color, or
  81             // we hit the body or root (have no parent)
  82             if (c != '' && c != 'transparent')
  83                 break;
  84             elem = elem.parent();
  85         } while (elem.length && !$.nodeName(elem.get(0), "body"));
  86
  87         // catch Safari's way of signalling transparent
  88         if (c == "rgba(0, 0, 0, 0)")
  89             c = "transparent";
  90
  91         return $.color.parse(c);
  92     };
  93
  94     // parse CSS color string (like "rgb(10, 32, 43)" or "#fff"),
  95     // returns color object, if parsing failed, you get black (0, 0,
  96     // 0) out
  97     $.color.parse = function (str) {
  98         var res, m = $.color.make;
  99
 100         // Look for rgb(num,num,num)
 101         if (res = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str))
 102             return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10));
 103
 104         // Look for rgba(num,num,num,num)
 105         if (res = /rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))
 106             return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10), parseFloat(res[4]));
 107
 108         // Look for rgb(num%,num%,num%)
 109         if (res = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str))
 110             return m(parseFloat(res[1])*2.55, parseFloat(res[2])*2.55, parseFloat(res[3])*2.55);
 111
 112         // Look for rgba(num%,num%,num%,num)
 113         if (res = /rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))
 114             return m(parseFloat(res[1])*2.55, parseFloat(res[2])*2.55, parseFloat(res[3])*2.55, parseFloat(res[4]));
 115
 116         // Look for #a0b1c2
 117         if (res = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str))
 118             return m(parseInt(res[1], 16), parseInt(res[2], 16), parseInt(res[3], 16));
 119
 120         // Look for #fff
 121         if (res = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str))
 122             return m(parseInt(res[1]+res[1], 16), parseInt(res[2]+res[2], 16), parseInt(res[3]+res[3], 16));
 123
 124         // Otherwise, we're most likely dealing with a named color
 125         var name = $.trim(str).toLowerCase();
 126         if (name == "transparent")
 127             return m(255, 255, 255, 0);
 128         else {
 129             // default to black
 130             res = lookupColors[name] || [0, 0, 0];
 131             return m(res[0], res[1], res[2]);
 132         }
 133     };
 134
 135     var lookupColors = {
 136         aqua:[0,255,255],
 137         azure:[240,255,255],
 138         beige:[245,245,220],
 139         black:[0,0,0],
 140         blue:[0,0,255],
 141         brown:[165,42,42],
 142         cyan:[0,255,255],
 143         darkblue:[0,0,139],
 144         darkcyan:[0,139,139],
 145         darkgrey:[169,169,169],
 146         darkgreen:[0,100,0],
 147         darkkhaki:[189,183,107],
 148         darkmagenta:[139,0,139],
 149         darkolivegreen:[85,107,47],
 150         darkorange:[255,140,0],
 151         darkorchid:[153,50,204],
 152         darkred:[139,0,0],
 153         darksalmon:[233,150,122],
 154         darkviolet:[148,0,211],
 155         fuchsia:[255,0,255],
 156         gold:[255,215,0],
 157         green:[0,128,0],
 158         indigo:[75,0,130],
 159         khaki:[240,230,140],
 160         lightblue:[173,216,230],
 161         lightcyan:[224,255,255],
 162         lightgreen:[144,238,144],
 163         lightgrey:[211,211,211],
 164         lightpink:[255,182,193],
 165         lightyellow:[255,255,224],
 166         lime:[0,255,0],
 167         magenta:[255,0,255],
 168         maroon:[128,0,0],
 169         navy:[0,0,128],
 170         olive:[128,128,0],
 171         orange:[255,165,0],
 172         pink:[255,192,203],
 173         purple:[128,0,128],
 174         violet:[128,0,128],
 175         red:[255,0,0],
 176         silver:[192,192,192],
 177         white:[255,255,255],
 178         yellow:[255,255,0]
 179     };
 180 })(jQuery);