The Tor Browser / file comparison
comparison: toolkit/content/viewZoomOverlay.js
toolkit/content/viewZoomOverlay.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:a3a7ed196e00 |
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| 1 // -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 /** Document Zoom Management Code | |
| 8 * | |
| 9 * To use this, you'll need to have a getBrowser() function or use the methods | |
| 10 * that accept a browser to be modified. | |
| 11 **/ | |
| 12 | |
| 13 var ZoomManager = { | |
| 14 get _prefBranch() { | |
| 15 delete this._prefBranch; | |
| 16 return this._prefBranch = Components.classes["@mozilla.org/preferences-service;1"] | |
| 17 .getService(Components.interfaces.nsIPrefBranch); | |
| 18 }, | |
| 19 | |
| 20 get MIN() { | |
| 21 delete this.MIN; | |
| 22 return this.MIN = this._prefBranch.getIntPref("zoom.minPercent") / 100; | |
| 23 }, | |
| 24 | |
| 25 get MAX() { | |
| 26 delete this.MAX; | |
| 27 return this.MAX = this._prefBranch.getIntPref("zoom.maxPercent") / 100; | |
| 28 }, | |
| 29 | |
| 30 get useFullZoom() { | |
| 31 return this._prefBranch.getBoolPref("browser.zoom.full"); | |
| 32 }, | |
| 33 | |
| 34 set useFullZoom(aVal) { | |
| 35 this._prefBranch.setBoolPref("browser.zoom.full", aVal); | |
| 36 return aVal; | |
| 37 }, | |
| 38 | |
| 39 get zoom() { | |
| 40 return this.getZoomForBrowser(getBrowser()); | |
| 41 }, | |
| 42 | |
| 43 getZoomForBrowser: function ZoomManager_getZoomForBrowser(aBrowser) { | |
| 44 return (this.useFullZoom || aBrowser.isSyntheticDocument) | |
| 45 ? aBrowser.fullZoom : aBrowser.textZoom; | |
| 46 }, | |
| 47 | |
| 48 set zoom(aVal) { | |
| 49 this.setZoomForBrowser(getBrowser(), aVal); | |
| 50 return aVal; | |
| 51 }, | |
| 52 | |
| 53 setZoomForBrowser: function ZoomManager_setZoomForBrowser(aBrowser, aVal) { | |
| 54 if (aVal < this.MIN || aVal > this.MAX) | |
| 55 throw Components.results.NS_ERROR_INVALID_ARG; | |
| 56 | |
| 57 if (this.useFullZoom || aBrowser.isSyntheticDocument) { | |
| 58 aBrowser.textZoom = 1; | |
| 59 aBrowser.fullZoom = aVal; | |
| 60 } else { | |
| 61 aBrowser.textZoom = aVal; | |
| 62 aBrowser.fullZoom = 1; | |
| 63 } | |
| 64 }, | |
| 65 | |
| 66 get zoomValues() { | |
| 67 var zoomValues = this._prefBranch.getCharPref("toolkit.zoomManager.zoomValues") | |
| 68 .split(",").map(parseFloat); | |
| 69 zoomValues.sort(function (a, b) a - b); | |
| 70 | |
| 71 while (zoomValues[0] < this.MIN) | |
| 72 zoomValues.shift(); | |
| 73 | |
| 74 while (zoomValues[zoomValues.length - 1] > this.MAX) | |
| 75 zoomValues.pop(); | |
| 76 | |
| 77 delete this.zoomValues; | |
| 78 return this.zoomValues = zoomValues; | |
| 79 }, | |
| 80 | |
| 81 enlarge: function ZoomManager_enlarge() { | |
| 82 var i = this.zoomValues.indexOf(this.snap(this.zoom)) + 1; | |
| 83 if (i < this.zoomValues.length) | |
| 84 this.zoom = this.zoomValues[i]; | |
| 85 }, | |
| 86 | |
| 87 reduce: function ZoomManager_reduce() { | |
| 88 var i = this.zoomValues.indexOf(this.snap(this.zoom)) - 1; | |
| 89 if (i >= 0) | |
| 90 this.zoom = this.zoomValues[i]; | |
| 91 }, | |
| 92 | |
| 93 reset: function ZoomManager_reset() { | |
| 94 this.zoom = 1; | |
| 95 }, | |
| 96 | |
| 97 toggleZoom: function ZoomManager_toggleZoom() { | |
| 98 var zoomLevel = this.zoom; | |
| 99 | |
| 100 this.useFullZoom = !this.useFullZoom; | |
| 101 this.zoom = zoomLevel; | |
| 102 }, | |
| 103 | |
| 104 snap: function ZoomManager_snap(aVal) { | |
| 105 var values = this.zoomValues; | |
| 106 for (var i = 0; i < values.length; i++) { | |
| 107 if (values[i] >= aVal) { | |
| 108 if (i > 0 && aVal - values[i - 1] < values[i] - aVal) | |
| 109 i--; | |
| 110 return values[i]; | |
| 111 } | |
| 112 } | |
| 113 return values[i - 1]; | |
| 114 } | |
| 115 }; |
