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 = (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.fullscreenEnabled ];
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) return;
114 
115 	    element = element || document.documentElement;
116 	    element[ this._fn.requestFullscreen ]();
117 
118 	    if (onFullScreenChange) {
119 		    var eventName = this._fn.fullscreenchange;
120 		    if (this._preOnFullScreenChange)
121 			    document.removeEventListener(eventName, this._preOnFullScreenChange);
122 		    this._preOnFullScreenChange = onFullScreenChange;
123             cc._addEventListener(document, eventName, onFullScreenChange, false);
124 	    }
125 
126         return element[ this._fn.requestFullscreen ]();
127     },
128 
129     /**
130      * exit the full mode.
131      * @return {Boolean}
132      */
133     exitFullScreen: function () {
134         return this._supportsFullScreen ? document[ this._fn.exitFullscreen ]() : true;
135     },
136 
137     /**
138      * Automatically request full screen with a touch/click event
139      * @param {Element} element
140      * @param {Function} onFullScreenChange
141      */
142     autoFullScreen: function (element, onFullScreenChange) {
143 	    element = element || document.body;
144 	    var touchTarget = cc._canvas || element;
145         var theScreen = this;
146         // Function bind will be too complicated here because we need the callback function's reference to remove the listener
147         function callback() {
148             theScreen.requestFullScreen(element, onFullScreenChange);
149             touchTarget.removeEventListener(theScreen._touchEvent, callback);
150         }
151         this.requestFullScreen(element, onFullScreenChange);
152         cc._addEventListener(touchTarget, this._touchEvent, callback);
153     }
154 };
155 cc.screen.init();