Index: third_party/flot/jquery.colorhelpers.js |
diff --git a/third_party/flot/jquery.colorhelpers.js b/third_party/flot/jquery.colorhelpers.js |
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+/* Plugin for jQuery for working with colors. |
+ * |
+ * Version 1.1. |
+ * |
+ * Inspiration from jQuery color animation plugin by John Resig. |
+ * |
+ * Released under the MIT license by Ole Laursen, October 2009. |
+ * |
+ * Examples: |
+ * |
+ * $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString() |
+ * var c = $.color.extract($("#mydiv"), 'background-color'); |
+ * console.log(c.r, c.g, c.b, c.a); |
+ * $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)" |
+ * |
+ * Note that .scale() and .add() return the same modified object |
+ * instead of making a new one. |
+ * |
+ * V. 1.1: Fix error handling so e.g. parsing an empty string does |
+ * produce a color rather than just crashing. |
+ */ |
+ |
+(function($) { |
+ $.color = {}; |
+ |
+ // construct color object with some convenient chainable helpers |
+ $.color.make = function (r, g, b, a) { |
+ var o = {}; |
+ o.r = r || 0; |
+ o.g = g || 0; |
+ o.b = b || 0; |
+ o.a = a != null ? a : 1; |
+ |
+ o.add = function (c, d) { |
+ for (var i = 0; i < c.length; ++i) |
+ o[c.charAt(i)] += d; |
+ return o.normalize(); |
+ }; |
+ |
+ o.scale = function (c, f) { |
+ for (var i = 0; i < c.length; ++i) |
+ o[c.charAt(i)] *= f; |
+ return o.normalize(); |
+ }; |
+ |
+ o.toString = function () { |
+ if (o.a >= 1.0) { |
+ return "rgb("+[o.r, o.g, o.b].join(",")+")"; |
+ } else { |
+ return "rgba("+[o.r, o.g, o.b, o.a].join(",")+")"; |
+ } |
+ }; |
+ |
+ o.normalize = function () { |
+ function clamp(min, value, max) { |
+ return value < min ? min: (value > max ? max: value); |
+ } |
+ |
+ o.r = clamp(0, parseInt(o.r), 255); |
+ o.g = clamp(0, parseInt(o.g), 255); |
+ o.b = clamp(0, parseInt(o.b), 255); |
+ o.a = clamp(0, o.a, 1); |
+ return o; |
+ }; |
+ |
+ o.clone = function () { |
+ return $.color.make(o.r, o.b, o.g, o.a); |
+ }; |
+ |
+ return o.normalize(); |
+ } |
+ |
+ // extract CSS color property from element, going up in the DOM |
+ // if it's "transparent" |
+ $.color.extract = function (elem, css) { |
+ var c; |
+ |
+ do { |
+ c = elem.css(css).toLowerCase(); |
+ // keep going until we find an element that has color, or |
+ // we hit the body or root (have no parent) |
+ if (c != '' && c != 'transparent') |
+ break; |
+ elem = elem.parent(); |
+ } while (elem.length && !$.nodeName(elem.get(0), "body")); |
+ |
+ // catch Safari's way of signalling transparent |
+ if (c == "rgba(0, 0, 0, 0)") |
+ c = "transparent"; |
+ |
+ return $.color.parse(c); |
+ } |
+ |
+ // parse CSS color string (like "rgb(10, 32, 43)" or "#fff"), |
+ // returns color object, if parsing failed, you get black (0, 0, |
+ // 0) out |
+ $.color.parse = function (str) { |
+ var res, m = $.color.make; |
+ |
+ // Look for rgb(num,num,num) |
+ if (res = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str)) |
+ return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10)); |
+ |
+ // Look for rgba(num,num,num,num) |
+ 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)) |
+ return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10), parseFloat(res[4])); |
+ |
+ // Look for rgb(num%,num%,num%) |
+ if (res = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str)) |
+ return m(parseFloat(res[1])*2.55, parseFloat(res[2])*2.55, parseFloat(res[3])*2.55); |
+ |
+ // Look for rgba(num%,num%,num%,num) |
+ 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)) |
+ return m(parseFloat(res[1])*2.55, parseFloat(res[2])*2.55, parseFloat(res[3])*2.55, parseFloat(res[4])); |
+ |
+ // Look for #a0b1c2 |
+ if (res = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str)) |
+ return m(parseInt(res[1], 16), parseInt(res[2], 16), parseInt(res[3], 16)); |
+ |
+ // Look for #fff |
+ if (res = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str)) |
+ return m(parseInt(res[1]+res[1], 16), parseInt(res[2]+res[2], 16), parseInt(res[3]+res[3], 16)); |
+ |
+ // Otherwise, we're most likely dealing with a named color |
+ var name = $.trim(str).toLowerCase(); |
+ if (name == "transparent") |
+ return m(255, 255, 255, 0); |
+ else { |
+ // default to black |
+ res = lookupColors[name] || [0, 0, 0]; |
+ return m(res[0], res[1], res[2]); |
+ } |
+ } |
+ |
+ var lookupColors = { |
+ 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] |
+ }; |
+})(jQuery); |