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detect browser zoom (chrome)

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This commit is contained in:
Oleg Korshul 2016-11-29 13:13:58 +03:00
parent 9d538cb552
commit 12d6ef13ee
1 changed files with 19 additions and 2 deletions
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21
apps/common/main/lib/util/utils.js
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@ -105,8 +105,25 @@ Common.Utils = _.extend(new(function() {
me = this,
checkSize = function() {
if (isChrome && !isOpera && document && document.firstElementChild && document.body) {
document.firstElementChild.style.zoom = "reset";
me.zoom = document.body.clientWidth / window.innerWidth;
//document.firstElementChild.style.zoom = "reset";
if (window.innerWidth > 300)
me.zoom = window.outerWidth / window.innerWidth;
if (Math.abs(me.zoom - 1) < 0.1)
me.zoom = 1;
me.zoom = window.outerWidth / window.innerWidth;
var _devicePixelRatio = window.devicePixelRatio / me.zoom;
// device pixel ratio: кратно 0.5
_devicePixelRatio = (5 * (((2.5 + 10 * _devicePixelRatio) / 5) >> 0)) / 10;
me.zoom = window.devicePixelRatio / _devicePixelRatio;
// chrome 54.x: zoom = "reset" - clear retina zoom (windows)
//document.firstElementChild.style.zoom = "reset";
document.firstElementChild.style.zoom = 1.0 / me.zoom;
}
me.innerWidth = window.innerWidth * me.zoom;
me.innerHeight = window.innerHeight * me.zoom;