1 /****************************************************************************
  2  Copyright (c) 2008-2010 Ricardo Quesada
  3  Copyright (c) 2011-2012 cocos2d-x.org
  4  Copyright (c) 2013-2014 Chukong Technologies Inc.
  5  
  6  http://www.cocos2d-x.org
  7  
  8  Permission is hereby granted, free of charge, to any person obtaining a copy
  9  of this software and associated documentation files (the "Software"), to deal
 10  in the Software without restriction, including without limitation the rights
 11  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 12  copies of the Software, and to permit persons to whom the Software is
 13  furnished to do so, subject to the following conditions:
 14  
 15  The above copyright notice and this permission notice shall be included in
 16  all copies or substantial portions of the Software.
 17  
 18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 19  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 20  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 21  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 22  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 23  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 24  THE SOFTWARE.
 25  ****************************************************************************/
 26 
 27 /**
 28  * The fullscreen API provides an easy way for web content to be presented using the user's entire screen.
 29  * It's invalid on safari, QQbrowser and android browser
 30  * @class
 31  * @name cc.screen
 32  */
 33 cc.screen = /** @lends cc.screen# */{
 34     _supportsFullScreen: false,
 35     // the pre fullscreenchange function
 36     _preOnFullScreenChange: null,
 37     _touchEvent: "",
 38     _fn: null,
 39     // Function mapping for cross browser support
 40     _fnMap: [
 41         [
 42             'requestFullscreen',
 43             'exitFullscreen',
 44             'fullscreenchange',
 45             'fullscreenEnabled',
 46             'fullscreenElement'
 47         ],
 48         [
 49             'requestFullScreen',
 50             'exitFullScreen',
 51             'fullScreenchange',
 52             'fullScreenEnabled',
 53             'fullScreenElement'
 54         ],
 55         [
 56             'webkitRequestFullScreen',
 57             'webkitCancelFullScreen',
 58             'webkitfullscreenchange',
 59             'webkitIsFullScreen',
 60             'webkitCurrentFullScreenElement'
 61         ],
 62         [
 63             'mozRequestFullScreen',
 64             'mozCancelFullScreen',
 65             'mozfullscreenchange',
 66             'mozFullScreen',
 67             'mozFullScreenElement'
 68         ],
 69         [
 70             'msRequestFullscreen',
 71             'msExitFullscreen',
 72             'MSFullscreenChange',
 73             'msFullscreenEnabled',
 74             'msFullscreenElement'
 75         ]
 76     ],
 77     
 78     /**
 79      * initialize
 80      * @function
 81      */
 82     init: function () {
 83         this._fn = {};
 84         var i, val, map = this._fnMap, valL;
 85         for (i = 0, l = map.length; i < l; i++) {
 86             val = map[i];
 87             if (val && val[1] in document) {
 88                 for (i = 0, valL = val.length; i < valL; i++) {
 89                     this._fn[map[0][i]] = val[i];
 90                 }
 91                 break;
 92             }
 93         }
 94 
 95         this._supportsFullScreen = (typeof this._fn.requestFullscreen !== 'undefined');
 96         this._touchEvent = ('ontouchstart' in window) ? 'touchstart' : 'mousedown';
 97     },
 98     
 99     /**
100      * return true if it's full now.
101      * @returns {Boolean}
102      */
103     fullScreen: function () {
104         return this._supportsFullScreen && document[this._fn.fullscreenElement];
105     },
106     
107     /**
108      * change the screen to full mode.
109      * @param {Element} element
110      * @param {Function} onFullScreenChange
111      */
112     requestFullScreen: function (element, onFullScreenChange) {
113         if (!this._supportsFullScreen) {
114             return;
115         }
116 
117         element = element || document.documentElement;
118 
119         if (onFullScreenChange) {
120             var eventName = this._fn.fullscreenchange;
121             if (this._preOnFullScreenChange) {
122                 document.removeEventListener(eventName, this._preOnFullScreenChange);
123             }
124             this._preOnFullScreenChange = onFullScreenChange;
125             cc._addEventListener(document, eventName, onFullScreenChange, false);
126         }
127 
128         return element[this._fn.requestFullscreen]();
129     },
130     
131     /**
132      * exit the full mode.
133      * @return {Boolean}
134      */
135     exitFullScreen: function () {
136         return this._supportsFullScreen ? document[this._fn.exitFullscreen]() : true;
137     },
138     
139     /**
140      * Automatically request full screen with a touch/click event
141      * @param {Element} element
142      * @param {Function} onFullScreenChange
143      */
144     autoFullScreen: function (element, onFullScreenChange) {
145         element = element || document.body;
146         var touchTarget = cc._canvas || element;
147         var theScreen = this;
148         // Function bind will be too complicated here because we need the callback function's reference to remove the listener
149         function callback() {
150             theScreen.requestFullScreen(element, onFullScreenChange);
151             touchTarget.removeEventListener(theScreen._touchEvent, callback);
152         }
153         this.requestFullScreen(element, onFullScreenChange);
154         cc._addEventListener(touchTarget, this._touchEvent, callback);
155     }
156 };
157 cc.screen.init();