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jquery.colourbrightness.js
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jquery.colourbrightness.js
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/*
* colourBrightness.js
*
* Copyright 2013, Jamie Brittain - http://jamiebrittain.com
* Released under the WTFPL license
* http://sam.zoy.org/wtfpl/
*
* Github: http://github.com/jamiebrittain/colourBrightness.js
* Version: 1.2
*/
(function($){
$.colourBrightness = function(el, options){
// To avoid scope issues, use 'base' instead of 'this'
// to reference this class from internal events and functions.
var base = this;
// Access to jQuery and DOM versions of element
base.$el = $(el);
base.el = el;
// Add a reverse reference to the DOM object
base.$el.data("colourBrightness", base);
base.init = function(){
base.options = $.extend({},$.colourBrightness.defaultOptions, options);
// Put your initialization code here
var r,g,b,brightness,
colour = base.$el.css("background-color");
if (colour.match(/^rgb/)) {
colour = colour.match(/rgba?\(([^)]+)\)/)[1];
colour = colour.split(/ *, */).map(Number);
r = colour[0];
g = colour[1];
b = colour[2];
} else if ('#' == colour[0] && 7 == colour.length) {
r = parseInt(colour.slice(1, 3), 16);
g = parseInt(colour.slice(3, 5), 16);
b = parseInt(colour.slice(5, 7), 16);
} else if ('#' == colour[0] && 4 == colour.length) {
r = parseInt(colour[1] + colour[1], 16);
g = parseInt(colour[2] + colour[2], 16);
b = parseInt(colour[3] + colour[3], 16);
}
brightness = (r * 299 + g * 587 + b * 114) / 1000;
if (brightness < 125) {
// white text
base.$el.removeClass("light").addClass("dark");
} else {
// black text
base.$el.removeClass("dark").addClass("light");
}
};
// Sample Function, Uncomment to use
// base.functionName = function(paramaters){
//
// };
// Run initializer
base.init();
};
$.colourBrightness.defaultOptions = {
};
$.fn.colourBrightness = function(options){
return this.each(function(){
(new $.colourBrightness(this, options));
});
};
})(jQuery);