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/*
* This file is part of "What's The Point" <https://github.com/Pacien/WhatsThePoint>
* Copyright (C) 2014 Pacien TRAN-GIRARD
*
* "What's The Point" is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* "What's The Point" 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
define([], function () {
var autoscale = {
init: function () {
this.container = document.body;
this.reference = document.getElementsByTagName("p-screen")[0];
this.target = this.reference;
this.centerTarget();
this.bindEvent();
this.resize();
},
centerTarget: function () {
this.target.style.position = "absolute";
this.target.style.top = "50%";
this.target.style.left = "50%";
this.target.style.marginTop = -this.target.offsetHeight / 2 + "px";
this.target.style.marginLeft = -this.target.offsetWidth / 2 + "px";
document.body.style.overflow = "hidden";
},
applyTransformation: function (transformation) {
this.target.style.MozTransform = transformation;
this.target.style.WebkitTransform = transformation;
this.target.style.OTransform = transformation;
this.target.style.msTransform = transformation;
this.target.style.transform = transformation;
},
resize: function () {
var widthRatio = this.container.offsetWidth / this.reference.offsetWidth;
var heightRatio = this.container.offsetHeight / this.reference.offsetHeight;
var scaleRatio = Math.min(widthRatio, heightRatio);
scaleRatio = scaleRatio < 1 ? scaleRatio : 1;
this.applyTransformation("scale(" + scaleRatio + ")");
},
bindEvent: function () {
window.addEventListener("resize", function () {
autoscale.resize();
});
},
};
return autoscale;
});
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