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110 lines
4.2 KiB
JavaScript
110 lines
4.2 KiB
JavaScript
/**
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* @license
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* Copyright (C) 2012-2013 KO GmbH <copyright@kogmbh.com>
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*
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* @licstart
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* The JavaScript code in this page is free software: you can redistribute it
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* and/or modify it under the terms of the GNU Affero General Public License
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* (GNU AGPL) as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. The code is distributed
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU AGPL 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 this code. If not, see <http://www.gnu.org/licenses/>.
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*
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* As additional permission under GNU AGPL version 3 section 7, you
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* may distribute non-source (e.g., minimized or compacted) forms of
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* that code without the copy of the GNU GPL normally required by
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* section 4, provided you include this license notice and a URL
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* through which recipients can access the Corresponding Source.
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*
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* As a special exception to the AGPL, any HTML file which merely makes function
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* calls to this code, and for that purpose includes it by reference shall be
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* deemed a separate work for copyright law purposes. In addition, the copyright
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* holders of this code give you permission to combine this code with free
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* software libraries that are released under the GNU LGPL. You may copy and
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* distribute such a system following the terms of the GNU AGPL for this code
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* and the LGPL for the libraries. If you modify this code, you may extend this
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* exception to your version of the code, but you are not obligated to do so.
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* If you do not wish to do so, delete this exception statement from your
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* version.
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*
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* This license applies to this entire compilation.
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* @licend
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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,require*/
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define("webodf/editor/widgets/zoomSlider", [
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"webodf/editor/EditorSession"],
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function (EditorSession) {
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"use strict";
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return function ZoomSlider(callback) {
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var self = this,
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editorSession,
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slider,
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extremeZoomFactor = 4;
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// The slider zooms from -1 to +1, which corresponds
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// to zoom levels of 1/extremeZoomFactor to extremeZoomFactor.
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function makeWidget(callback) {
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require(["dijit/form/HorizontalSlider", "dijit/form/NumberTextBox", "dojo"], function (HorizontalSlider, NumberTextBox, dojo) {
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var widget = {};
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slider = new HorizontalSlider({
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name: 'zoomSlider',
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value: 0,
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minimum: -1,
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maximum: 1,
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discreteValues: 0.01,
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intermediateChanges: true,
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style: {
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width: '150px',
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height: '25px',
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float: 'right'
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}
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});
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slider.onChange = function (value) {
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if (editorSession) {
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editorSession.getOdfCanvas().getZoomHelper().setZoomLevel(Math.pow(extremeZoomFactor, value));
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}
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self.onToolDone();
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};
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return callback(slider);
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});
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}
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function updateSlider(zoomLevel) {
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if (slider) {
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slider.set('value', Math.log(zoomLevel) / Math.log(extremeZoomFactor), false);
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}
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}
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this.setEditorSession = function(session) {
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var zoomHelper;
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if (editorSession) {
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editorSession.getOdfCanvas().getZoomHelper().unsubscribe(gui.ZoomHelper.signalZoomChanged, updateSlider);
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}
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editorSession = session;
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if (editorSession) {
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zoomHelper = editorSession.getOdfCanvas().getZoomHelper();
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zoomHelper.subscribe(gui.ZoomHelper.signalZoomChanged, updateSlider);
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updateSlider(zoomHelper.getZoomLevel());
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}
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};
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this.onToolDone = function () {};
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// init
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makeWidget(function (widget) {
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return callback(widget);
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});
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};
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});
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