74 lines
2.2 KiB
JavaScript
74 lines
2.2 KiB
JavaScript
/**
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* ownCloud
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*
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* @author Morris Jobke
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* @copyright 2013 Morris Jobke <morris.jobke@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/*
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* Adds a background color to the element called on and adds the first character
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* of the passed in string. This string is also the seed for the generation of
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* the background color.
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*
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* You have following HTML:
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*
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* <div id="albumart"></div>
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*
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* And call this from Javascript:
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*
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* $('#albumart').imageplaceholder('The Album Title');
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*
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* Which will result in:
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*
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* <div id="albumart" style="background-color: hsl(123, 90%, 65%); ... ">T</div>
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*
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* You may also call it like this, to have a different background, than the seed:
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*
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* $('#albumart').imageplaceholder('The Album Title', 'Album Title');
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*
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* Resulting in:
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*
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* <div id="albumart" style="background-color: hsl(123, 90%, 65%); ... ">A</div>
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*
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*/
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(function ($) {
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$.fn.imageplaceholder = function(seed, text) {
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// set optional argument "text" to value of "seed" if undefined
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text = text || seed;
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var hash = md5(seed),
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maxRange = parseInt('ffffffffffffffffffffffffffffffff', 16),
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hue = parseInt(hash, 16) / maxRange * 256,
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height = this.height();
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this.css('background-color', 'hsl(' + hue + ', 90%, 65%)');
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// CSS rules
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this.css('color', '#fff');
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this.css('font-weight', 'bold');
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this.css('text-align', 'center');
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// calculate the height
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this.css('line-height', height + 'px');
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this.css('font-size', (height * 0.55) + 'px');
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if(seed !== null && seed.length) {
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this.html(text[0].toUpperCase());
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}
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};
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}(jQuery));
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