/** * ownCloud * * @author Morris Jobke * @copyright 2013 Morris Jobke * * 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 . * */ /* * Adds a background color to the element called on and adds the first character * of the passed in string. This string is also the seed for the generation of * the background color. * * You have following HTML: * *
* * And call this from Javascript: * * $('#albumart').imageplaceholder('The Album Title'); * * Which will result in: * *
T
* * You may also call it like this, to have a different background, than the seed: * * $('#albumart').imageplaceholder('The Album Title', 'Album Title'); * * Resulting in: * *
A
* */ (function ($) { $.fn.imageplaceholder = function(seed, text) { // set optional argument "text" to value of "seed" if undefined text = text || seed; var hash = md5(seed), maxRange = parseInt('ffffffffffffffffffffffffffffffff', 16), hue = parseInt(hash, 16) / maxRange * 256, height = this.height(); this.css('background-color', 'hsl(' + hue + ', 90%, 65%)'); // CSS rules this.css('color', '#fff'); this.css('font-weight', 'normal'); this.css('text-align', 'center'); // calculate the height this.css('line-height', height + 'px'); this.css('font-size', (height * 0.55) + 'px'); if(seed !== null && seed.length) { this.html(text[0].toUpperCase()); } }; }(jQuery));