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  * @namespace
 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     init: function () {
 79 	    this._fn = {};
 80 	    var i, val, map = this._fnMap, valL;
 81 	    for (i = 0, l = map.length; i < l; i++ ) {
 82 		    val = map[ i ];
 83 		    if ( val && val[1] in document ) {
 84 			    for ( i = 0, valL = val.length; i < valL; i++ ) {
 85 				    this._fn[ map[0][ i ] ] = val[ i ];
 86 			    }
 87 			    break;
 88 		    }
 89 	    }
 90 
 91 		this._supportsFullScreen = (this._fn.requestFullscreen != undefined);
 92         this._touchEvent = ('ontouchstart' in window) ? 'touchstart' : 'mousedown';
 93     },
 94 
 95     /**
 96      * return true if it's full now.
 97      * @returns {Boolean}
 98      */
 99     fullScreen: function() {
100 	    return this._supportsFullScreen && document[ this._fn.fullscreenEnabled ];
101     },
102 
103     /**
104      * change the screen to full mode.
105      * @param {Element} element
106      * @param {Function} onFullScreenChange
107      */
108     requestFullScreen: function (element, onFullScreenChange) {
109 	    if (!this._supportsFullScreen) return;
110 
111 	    element = element || document.documentElement;
112 	    element[ this._fn.requestFullscreen ]();
113 
114 	    if (onFullScreenChange) {
115 		    var eventName = this._fn.fullscreenchange;
116 		    if (this._preOnFullScreenChange)
117 			    document.removeEventListener(eventName, this._preOnFullScreenChange);
118 		    this._preOnFullScreenChange = onFullScreenChange;
119             cc._addEventListener(document, eventName, onFullScreenChange, false);
120 	    }
121 
122         return element[ this._fn.requestFullscreen ]();
123     },
124 
125     /**
126      * exit the full mode.
127      */
128     exitFullScreen: function () {
129         return this._supportsFullScreen ? document[ this._fn.exitFullscreen ]() : true;
130     },
131 
132     /**
133      * Automatically request full screen with a touch/click event
134      * @param {Element} element
135      * @param {Function} onFullScreenChange
136      */
137     autoFullScreen: function (element, onFullScreenChange) {
138 	    element = element || document.body;
139 	    var touchTarget = cc._canvas || element;
140         var theScreen = this;
141         // Function bind will be too complicated here because we need the callback function's reference to remove the listener
142         function callback() {
143             theScreen.requestFullScreen(element, onFullScreenChange);
144             touchTarget.removeEventListener(theScreen._touchEvent, callback);
145         }
146         this.requestFullScreen(element, onFullScreenChange);
147         cc._addEventListener(touchTarget, this._touchEvent, callback);
148     }
149 };
150 cc.screen.init();