nextcloud/core/js/visualize.js

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JavaScript
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2013-08-28 18:25:14 +04:00
/**
* ownCloud
*
* @author Morris Jobke
* @copyright 2013 Morris Jobke <morris.jobke@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/*
* Adds a background color to the element called on and adds the first charater
* of the passed in string. This string is also the seed for the generation of
* the background color.
*
* You have following HTML:
*
* <div id="albumart"></div>
*
* And call this from Javascript:
*
* $('#albumart').visualize('The Album Title');
*
* Which will result in:
*
* <div id="albumart" style="background-color: rgb(123, 123, 123)">T</div>
*
*/
(function ($) {
$.fn.visualize = function(seed) {
var hash = md5(seed),
maxRange = parseInt('ffffffffff', 16),
red = parseInt(hash.substr(0,10), 16) / maxRange * 256,
green = parseInt(hash.substr(10,10), 16) / maxRange * 256,
blue = parseInt(hash.substr(20,10), 16) / maxRange * 256;
rgb = [Math.floor(red), Math.floor(green), Math.floor(blue)];
this.css('background-color', 'rgb(' + rgb.join(',') + ')');
this.html(seed[0].toUpperCase());
};
}(jQuery));