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84 lines
3.1 KiB
JavaScript
84 lines
3.1 KiB
JavaScript
/**
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* Copyright (C) 2014 KO GmbH <copyright@kogmbh.com>
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*
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* @licstart
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* This file is part of WebODF.
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*
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* WebODF is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Affero General Public License (GNU AGPL)
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* WebODF is distributed in the hope that it will be useful, but
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* 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 License
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* along with WebODF. If not, see <http://www.gnu.org/licenses/>.
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* @licend
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*
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* @source: http://www.webodf.org/
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* @source: https://github.com/kogmbh/WebODF/
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*/
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/*global define, document, window */
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define("webodf/editor/FullWindowZoomHelper", [], function () {
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"use strict";
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// fullscreen pinch-zoom adaption
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var FullWindowZoomHelper = function FullWindowZoomHelper(toolbarContainerElement, canvasContainerElement) {
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function translateToolbar() {
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var y = document.body.scrollTop;
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toolbarContainerElement.style.WebkitTransformOrigin = "center top";
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toolbarContainerElement.style.WebkitTransform = 'translateY(' + y + 'px)';
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}
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function repositionContainer() {
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canvasContainerElement.style.top = toolbarContainerElement.getBoundingClientRect().height + 'px';
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}
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this.destroy = function (callback) {
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window.removeEventListener('scroll', translateToolbar);
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window.removeEventListener('focusout', translateToolbar);
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window.removeEventListener('touchmove', translateToolbar);
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window.removeEventListener('resize', repositionContainer);
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callback();
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};
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function init() {
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var metaElement, toolbarStyle;
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// prevent any zooming on the window TODO: do not overwrite any other existing content of viewport metadata
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metaElement = document.createElement("meta");
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metaElement.setAttribute("name", "viewport");
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metaElement.setAttribute("content", "width=device-width, initial-scale=1.0, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0");
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document.head.appendChild(metaElement);
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// set the toolbar absolute and fixed to top
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toolbarStyle = toolbarContainerElement.style;
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toolbarStyle.top = 0;
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toolbarStyle.left = 0;
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toolbarStyle.right = 0;
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toolbarStyle.position = "absolute";
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toolbarStyle.zIndex = 5;
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toolbarStyle.boxShadow = "0 1px 5px rgba(0, 0, 0, 0.25)";
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repositionContainer();
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window.addEventListener('scroll', translateToolbar);
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window.addEventListener('focusout', translateToolbar);
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window.addEventListener('touchmove', translateToolbar);
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window.addEventListener('resize', repositionContainer);
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}
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init();
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};
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return FullWindowZoomHelper;
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});
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