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DocumentServer-v-9.2.0/web-apps/apps/common/main/lib/controller/Scaling.js
Yajbir Singh f1b860b25c
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updated
2025-12-11 19:03:17 +05:30

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JavaScript

/*
* (c) Copyright Ascensio System SIA 2010-2024
*
* This program is a free software product. You can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License (AGPL)
* version 3 as published by the Free Software Foundation. In accordance with
* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
* that Ascensio System SIA expressly excludes the warranty of non-infringement
* of any third-party rights.
*
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
*
* You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
* street, Riga, Latvia, EU, LV-1050.
*
* The interactive user interfaces in modified source and object code versions
* of the Program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU AGPL version 3.
*
* Pursuant to Section 7(b) of the License you must retain the original Product
* logo when distributing the program. Pursuant to Section 7(e) we decline to
* grant you any rights under trademark law for use of our trademarks.
*
* All the Product's GUI elements, including illustrations and icon sets, as
* well as technical writing content are licensed under the terms of the
* Creative Commons Attribution-ShareAlike 4.0 International. See the License
* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
*
*/
/**
* Created on 2/5/2021.
*/
define([
'core'
], function () {
'use strict';
!Common.UI && (Common.UI = {});
Common.UI.Scaling = new (function() {
const scales_map = {
'pixel-ratio__1' : 1,
'pixel-ratio__1_25' : 1.25,
'pixel-ratio__1_5' : 1.5,
'pixel-ratio__1_75' : 1.75,
'pixel-ratio__2' : 2,
'pixel-ratio__2_5' : 2.25,
}
let _body_classes = document.body.className;
const _from_class_list = function (str) {
const reg_ratio = /(pixel-ratio__[\w-]+)/.exec(str);
if ( reg_ratio && (reg_ratio[1] in scales_map) ) {
return reg_ratio[1];
}
return 'pixel-ratio__1';
}
let _current_ratio_str = _from_class_list(_body_classes);
const _callback = function (records, observer) {
const _changed_ratio = _from_class_list(document.body.className);
if ( _changed_ratio != _current_ratio_str ) {
$('[ratio]').trigger('app:scaling', {ratio: scales_map[_changed_ratio]});
_current_ratio_str = _changed_ratio;
}
};
(new MutationObserver(_callback.bind(this)))
.observe(document.body, {
attributes : true,
attributeFilter : ['class'],
})
return {
currentRatio: function () { return scales_map[_current_ratio_str] },
currentRatioSelector: function () { return _current_ratio_str },
};
});
});