0.6.x/js/ui/05_XUI_Gesture.js

   1 /* original:\r
   2  *  Hammer.JS - v1.0.5 - 2013-04-07\r
   3  *  http://eightmedia.github.com/hammer.js\r
   4  *  Jorik Tangelder <j.tangelder@gmail.com>, MIT license\r
   5  **/\r
   6 \r
   7 ( function( Math, window, document, undefined ){\r
   8         \r
   9         var ELEENT_LIST = [],\r
  10                 HAMMER_LIST = [],\r
  11                 POINTERS    = [],\r
  12                 ABS = new Function( 'v', 'return v<0?-v:v' );\r
  13         \r
  14         X.UI.Gesture = Hammer;\r
  15         \r
  16         function Hammer( uinodeRoot, uinode, type ){\r
  17                 this.uinode  = uinode;\r
  18                 this.enabled = true;\r
  19                 \r
  20                 Hammer.startup && Hammer.startup( uinodeRoot );\r
  21 \r
  22                 this.options = Hammer.defaults;\r
  23 \r
  24                 // start detection on touchstart\r
  25                 Utils.addEvents( uinode, Hammer.EVENT_TYPES_START, this );\r
  26                 \r
  27                 this.listen( type );\r
  28         };\r
  29         \r
  30         Hammer.defaults = {};\r
  31         \r
  32         Hammer.prototype.handleEvent = function( e ){\r
  33                 //var sourceEventType = e.type.toLowerCase();\r
  34 \r
  35                 var type       = IdToGestureID[ e.type ],\r
  36                         gestures   = Detection.gestures,\r
  37                         numTouches = 0,// count the total touches on the screen\r
  38                         pointerType, i, l, touches, ret, active, gesture, startEv,\r
  39                         hammer, deltaTime, deltaX, deltaY, velocity;\r
  40 \r
  41                 if( !type ) return;\r
  42                 \r
  43                 if( e.pointerType ){\r
  44                         type |= POINTER;\r
  45                         switch( e.pointerType ){\r
  46                                 case 'touch' :\r
  47                                 case 2       : //e.MSPOINTER_TYPE_TOUCH :\r
  48                                         type |= TOUCH; break;\r
  49                                 case 'pen' :\r
  50                                 case 3     : //e.MSPOINTER_TYPE_PEN :\r
  51                                         type |= PEN; break;\r
  52                                 case 'mouse' :\r
  53                                 case 4       : //e.MSPOINTER_TYPE_MOUSE :\r
  54                                         type |= MOUSE; break;\r
  55                                 default :\r
  56                                         return;\r
  57                         };\r
  58                 } else\r
  59                 if( e.touches ){\r
  60                         type |= TOUCH;\r
  61                 } else {\r
  62                         type |= MOUSE;\r
  63                 };\r
  64                 \r
  65                 // onmouseup, but when touchend has been fired we do nothing.\r
  66                 // this is for touchdevices which also fire a mouseup on touchend\r
  67                 if( type & MOUSE && touch_triggered ){\r
  68                         return X.Callback.STOP_NOW | X.Callback.STOP_PROPAGATION | X.Callback.PREVENT_DEFAULT;\r
  69                 }\r
  70                 // mousebutton must be down or a touch event\r
  71                 else if (\r
  72                         type & TOUCH || //sourceEventType.match(/touch/) || // touch events are always on screen\r
  73                         ( type & POINTER && type & START ) || //sourceEventType.match(/pointerdown/) || // pointerevents touch\r
  74                         ( type & MOUSE   && e.which === 1 ) //(sourceEventType.match(/mouse/) && e.which === 1) // mouse is pressed\r
  75                 ){\r
  76                         enable_detect = true;\r
  77                 };\r
  78 \r
  79                 // we are in a touch event, set the touch triggered bool to true,\r
  80                 // this for the conflicts that may occur on ios and android\r
  81                 type & ( TOUCH | POINTER ) && ( touch_triggered = true );\r
  82                 //if (sourceEventType.match(/touch|pointer/)) { touch_triggered = true;}\r
  83 \r
  84                 // when touch has been triggered in this detection session\r
  85                 // and we are now handling a mouse event, we stop that to prevent conflicts\r
  86                 if( enable_detect ){\r
  87                         // update pointerevent\r
  88                         if( Hammer.HAS_POINTEREVENTS ){ //eventType !== Hammer.EVENT_END ){\r
  89                                 POINTERS[ e.identifier = e.pointerId ] = type & END ? null : e;\r
  90                                 touches = [];\r
  91                                 // we can use forEach since pointerEvents only is in IE10\r
  92                                 for( i = 0, l = POINTERS.length; i < l; ++i ){\r
  93                                         POINTERS[ i ] && ( touches[ touches.length ] = POINTERS[ i ] );\r
  94                                 };\r
  95                                 numTouches = touches.length;\r
  96                         } else\r
  97                         // touch\r
  98                         if ( type & TOUCH ){ //sourceEventType.match(/touch/)) {\r
  99                                 touches    = Hammer.DO_TOUCHES_FIX && type & END ? [] : e.touches;\r
 100                                 numTouches = touches.length;\r
 101                         } else\r
 102                         // mouse\r
 103                         if( !touch_triggered ){\r
 104                                 numTouches = ( type & END ) ? 0 : 1;\r
 105                                 touches    = numTouches === 0 ? [] : [{\r
 106                                         identifier : 1,\r
 107                                         pageX      : e.pageX,\r
 108                                         pageY      : e.pageY,\r
 109                                         target     : e.target\r
 110                                 }];\r
 111                         };\r
 112                         // if we are in a end event, but when we remove one touch and\r
 113                         // we still have enough, set eventType to move\r
 114                         if( 0 < numTouches && type & END ){ // eventType === Hammer.EVENT_END ){\r
 115                                 type = type & POINTER_TYPE_MASK | MOVE;\r
 116                                 //eventType = Hammer.EVENT_MOVE;\r
 117                         } else if( !numTouches ){\r
 118                         // no touches, force the end event\r
 119                                 type = type & POINTER_TYPE_MASK | END;\r
 120                                 //eventType = Hammer.EVENT_END;\r
 121                         };\r
 122 \r
 123                         // because touchend has no touches, and we often want to use these in our gestures,\r
 124                         // we send the last move event as our eventData in touchend\r
 125                         ( !numTouches && last_move_event !== null ) ?\r
 126                                 ( e = last_move_event ):\r
 127                                 ( last_move_event = e ); // store the last move event\r
 128 \r
 129                         e = {\r
 130                                 center      : Utils.getCenter( touches ),\r
 131                                 timeStamp   : Date.now ? Date.now() : +new Date,\r
 132                                 target      : e.target,\r
 133                                 touches     : touches,\r
 134                                 eventType   : type & EVENT_TYPE_MASK,\r
 135                                 pointerType : type & POINTER_TYPE_MASK\r
 136                         };\r
 137 \r
 138                         if( type & START ){\r
 139                                 if( !this.enabled ) return;\r
 140                                 // already busy with a Hammer.gesture detection on an element\r
 141                                 if( Detection.current ) return;\r
 142                                 Detection.current = {\r
 143                                         hammer     : this, // reference to HammerInstance we're working for\r
 144                                         startEvent : Utils.extend( {}, e ), // start eventData for distances, timing etc\r
 145                                         lastEvent  : false, // last eventData\r
 146                                         name       : '' // current gesture we're in/detected, can be 'tap', 'hold' etc\r
 147                                 };\r
 148                                 Detection.stopped = false;\r
 149                                 hammer = this;\r
 150                                 active = hammer.activeGesture;\r
 151                         } else\r
 152                         if( !Detection.current || Detection.stopped ){\r
 153                                 return;\r
 154                         } else {\r
 155                                 hammer = Detection.current.hammer;\r
 156                                 active = hammer.activeGesture;\r
 157                         };\r
 158                         \r
 159                         // ----------------------------------------------------------------------------------------------------------------\r
 160                         // ret = Detection.detect( e );\r
 161 \r
 162                         // ----------------------------------------------------------------------------------------------------------------\r
 163                         // extend event data with calculations about scale, distance etc\r
 164                         // e = Detection.extendEventData( e );\r
 165                         startEv = Detection.current.startEvent;\r
 166                         center  = e.center;\r
 167 \r
 168                         // if the touches change, set the new touches over the startEvent touches\r
 169                         // this because touchevents don't have all the touches on touchstart, or the\r
 170                         // user must place his fingers at the EXACT same time on the screen, which is not realistic\r
 171                         // but, sometimes it happens that both fingers are touching at the EXACT same time\r
 172                         if( startEv && ( numTouches !== startEv.touches.length || touches === startEv.touches ) ){\r
 173                                 // extend 1 level deep to get the touchlist with the touch objects\r
 174                                 startEv.touches.length = i = 0;\r
 175                                 for( ; i < numTouches; ++i ){\r
 176                                         startEv.touches[ startEv.touches.length ] = Utils.extend( {}, touches[ i ] );\r
 177                                 };\r
 178                         };\r
 179 \r
 180                         deltaTime = e.timeStamp  - startEv.timeStamp;\r
 181                         deltaX    = center.pageX - startEv.center.pageX;\r
 182                         deltaY    = center.pageY - startEv.center.pageY;\r
 183                         velocity  = Utils.getVelocity( deltaTime, deltaX, deltaY );\r
 184 \r
 185                         Utils.extend( e, {\r
 186                                 deltaTime  : deltaTime,\r
 187 \r
 188                                 deltaX     : deltaX,\r
 189                                 deltaY     : deltaY,\r
 190 \r
 191                                 velocityX  : velocity.x,\r
 192                                 velocityY  : velocity.y,\r
 193 \r
 194                                 distance   : Utils.getDistance( startEv.center, center ),\r
 195                                 angle      : Utils.getAngle( startEv.center, center ),\r
 196                                 direction  : Utils.getDirection( startEv.center, center ),\r
 197 \r
 198                                 scale      : Utils.getScale( startEv.touches, touches ),\r
 199                                 rotation   : Utils.getRotation( startEv.touches, touches ),\r
 200 \r
 201                                 startEvent : startEv\r
 202                         });\r
 203 \r
 204                         // store as previous event event\r
 205                         Detection.current.lastEvent = e;\r
 206                         \r
 207                         // call Hammer.gesture handlers\r
 208                         for( i = 0, l = gestures.length; i < l; ++i ){\r
 209                                 gesture = gestures[ i ];\r
 210                                 if( Detection.stopped ) break;\r
 211                                 //if( active[ gesture.name ] ) console.log( gesture.name );\r
 212                                 // only when the instance options have enabled this gesture\r
 213                                 active[ gesture.name ] &&\r
 214                                         // if a handler returns false, we stop with the detection\r
 215                                         ( ret |= ( gesture.handler.call( gesture, e, hammer ) || X.Callback.NONE ) );\r
 216                         };\r
 217 \r
 218                         // endevent, but not the last touch, so dont stop\r
 219                         type & END && numTouches === 0 && Detection.stopDetect();\r
 220                         \r
 221                         // ----------------------------------------------------------------------------------------------------------------\r
 222                         // trigger the handler\r
 223                         //handler.call( context, HamEvent.collectEventData( element, eventType, e ) );\r
 224 \r
 225                         // remove pointerevent from list\r
 226                         if( Hammer.HAS_POINTEREVENTS && type & END ){ // eventType === Hammer.EVENT_END ){\r
 227                                 numTouches = 0;\r
 228                         };\r
 229                 };\r
 230 \r
 231                 //debug(sourceEventType +" "+ eventType);\r
 232 \r
 233                 // on the end we reset everything\r
 234                 if( numTouches === 0 ){\r
 235                         last_move_event = null;\r
 236                         enable_detect   = false;\r
 237                         touch_triggered = false;\r
 238                         POINTERS.length = 0;\r
 239                 };\r
 240                 \r
 241                 return ret;\r
 242         };\r
 243         \r
 244         Hammer.startup = function( uinodeRoot ){\r
 245                 // find what eventtypes we add listeners to\r
 246                 /**\r
 247                  * we have different events for each device/browser\r
 248                  * determine what we need and set them in the Hammer.EVENT_TYPES constant\r
 249                  */\r
 250                 // determine the eventtype we want to set\r
 251                 // for non pointer events browsers and mixed browsers,\r
 252                 // like chrome on windows8 touch laptop         \r
 253                 var types, name;\r
 254 \r
 255                 // Register all gestures inside Gestures\r
 256                 for( name in Gestures ){\r
 257                         //Gestures.hasOwnProperty( name ) && \r
 258                         Detection.register( Gestures[ name ] );\r
 259                 };\r
 260 \r
 261                 if( navigator.pointerEnabled || navigator.msPointerEnabled ){\r
 262                         Hammer.EVENT_TYPES_START = [ X.UI.Event._POINTER_DOWN ];\r
 263                         types = [ X.UI.Event._POINTER_MOVE, X.UI.Event._POINTER_UP, X.UI.Event._POINTER_CANCEL ];\r
 264                 } else\r
 265                 if( window.ontouchstart !== void 0 ){\r
 266                         Hammer.EVENT_TYPES_START = [ X.UI.Event._TOUCH_START ];\r
 267                         types = [ X.UI.Event._TOUCH_MOVE, X.UI.Event._MOUSE_MOVE, X.UI.Event._TOUCH_END, X.UI.Event._TOUCH_CANCEL ];\r
 268                 } else {\r
 269                         Hammer.EVENT_TYPES_START = [ X.UI.Event._MOUSE_DOWN ];\r
 270                         types = [ X.UI.Event._MOUSE_MOVE, X.UI.Event._MOUSE_UP, X.UI.Event._MOUSE_CANCEL ];\r
 271                 };\r
 272 \r
 273                 // Add touch events on the document\r
 274                 Utils.addEvents( uinodeRoot, types, Hammer.prototype.handleEvent );\r
 275 \r
 276                 // Hammer is ready...!\r
 277                 delete Hammer.startup;\r
 278         };\r
 279         \r
 280         Hammer.prototype.trigger = function( type, gesture ){\r
 281                 if( !this.types[ type ] ) return;\r
 282                 var e = Utils.extend( {}, gesture );\r
 283                 e.type = type;\r
 284                 return this.uinode.dispatch( e );\r
 285         };\r
 286         \r
 287         Hammer.prototype.listen = function( type ){\r
 288                 var gestures = Detection.gestures,\r
 289                         i = gestures.length, g;\r
 290                 for( ; i; ){\r
 291                         g = gestures[ --i ];\r
 292                         if( g.startID <= type && type <= g.endID ){\r
 293                                 if( !this.activeGesture ) this.activeGesture = {};\r
 294                                 if( !this.types ) this.types = {};\r
 295                                 this.activeGesture[ g.name ] = this.types[ type ] = 1;\r
 296                                 return;\r
 297                         };\r
 298                 };\r
 299         };\r
 300         \r
 301         Hammer.prototype.unlisten = function( type ){\r
 302                 var gestures = Detection.gestures,\r
 303                         i = gestures.length, g;\r
 304                 if( !this.activeGesture ) return;\r
 305                 for( ; i; ){\r
 306                         g = gestures[ --i ];\r
 307                         if( g.startID <= type && type <= g.endID ){\r
 308                                 if( this.activeGesture[ g.name ] ){\r
 309                                         if( this.types[ type ] ) delete this.types[ type ];\r
 310                                         for( i = g.startID; i <= g.endID; ++i ){\r
 311                                                 if( this.types[ i ] ) return;\r
 312                                         };\r
 313                                         delete this.activeGesture[ g.name ];\r
 314                                 };\r
 315                                 return;\r
 316                         };\r
 317                 };\r
 318         };\r
 319         \r
 320         /*\r
 321          *  "Android version < 2.2" return ev.touches.length === 1 when touchend, others return ev.touches.length === 0\r
 322          */\r
 323         Hammer.DO_TOUCHES_FIX = Hammer.HAS_TOUCHEVENTS && X.UA.Android < 2.2;\r
 324         \r
 325         // detect touchevents\r
 326         Hammer.HAS_POINTEREVENTS = navigator.pointerEnabled || navigator.msPointerEnabled;\r
 327 \r
 328         // eventtypes per touchevent (start, move, end)\r
 329         // are filled by HamEvent.determineEventTypes on setup\r
 330         Hammer.EVENT_TYPES_START = null;\r
 331 \r
 332         // direction defines\r
 333         Hammer.DIRECTION_DOWN  = 'down';\r
 334         Hammer.DIRECTION_LEFT  = 'left';\r
 335         Hammer.DIRECTION_UP    = 'up';\r
 336         Hammer.DIRECTION_RIGHT = 'right';\r
 337 \r
 338         // plugins namespace\r
 339         Hammer.plugins = {};\r
 340 \r
 341         var POINTER     = 1,\r
 342                 TOUCH       = 2,\r
 343                 PEN         = 8, //4,\r
 344                 MOUSE       = 8,\r
 345                 START       = 16,\r
 346                 MOVE        = 32,\r
 347                 END         = 64,\r
 348                 CANCEL      = 128,\r
 349                 EVENT_TYPE_MASK   = START | MOVE | END,\r
 350                 POINTER_TYPE_MASK = POINTER | TOUCH | MOUSE | PEN,\r
 351                 IdToGestureID = {};\r
 352         IdToGestureID[ X.UI.Event._POINTER_DOWN   ] = START;\r
 353         IdToGestureID[ X.UI.Event._POINTER_MOVE   ] = MOVE;\r
 354         IdToGestureID[ X.UI.Event._POINTER_UP     ] = END;\r
 355         IdToGestureID[ X.UI.Event._POINTER_CANCEL ] = END;\r
 356         \r
 357         IdToGestureID[ X.UI.Event._TOUCH_START  ] = START;\r
 358         IdToGestureID[ X.UI.Event._TOUCH_MOVE   ] = MOVE;\r
 359         IdToGestureID[ X.UI.Event._TOUCH_END    ] = END;\r
 360         IdToGestureID[ X.UI.Event._TOUCH_CANCEL ] = END;\r
 361         \r
 362         IdToGestureID[ X.UI.Event._MOUSE_DOWN   ] = START;\r
 363         IdToGestureID[ X.UI.Event._MOUSE_MOVE   ] = MOVE;\r
 364         IdToGestureID[ X.UI.Event._MOUSE_UP     ] = END;\r
 365         IdToGestureID[ X.UI.Event._MOUSE_CANCEL ] = END;\r
 366         \r
 367         Utils = {\r
 368                 \r
 369                 /**\r
 370                  * touch events with mouse fallback\r
 371                  * @param   {HTMLElement}   element\r
 372                  * @param   {String}        eventType        like Hammer.EVENT_MOVE\r
 373                  * @param   {Function}      handler\r
 374                  */\r
 375                 addEvents : function( uinode, types, context ){\r
 376                         for( var i = 0; i < types.length; ++i ){\r
 377                                 uinode.listen( types[ i ], context );\r
 378                         };\r
 379                 },\r
 380                 \r
 381                 /**\r
 382                  * extend method,\r
 383                  * also used for cloning when dest is an empty object\r
 384                  * @param   {Object}    dest\r
 385                  * @param   {Object}    src\r
 386                  * @parm        {Boolean}       merge           do a merge\r
 387                  * @returns {Object}    dest\r
 388                  */\r
 389                 extend : function extend( dest, src, merge ){\r
 390                         for( var key in src ){\r
 391                                 if( dest[ key ] !== undefined && merge ) continue;\r
 392                                 dest[ key ] = src[ key ];\r
 393                         };\r
 394                         return dest;\r
 395                 },\r
 396 \r
 397                 /**\r
 398                  * find if a node is in the given parent\r
 399                  * used for event delegation tricks\r
 400                  * @param   {HTMLElement}   node\r
 401                  * @param   {HTMLElement}   parent\r
 402                  * @returns {boolean}       has_parent\r
 403                  */\r
 404                 hasParent : function( node, parent ){\r
 405                         while( node && node.tagName ){ /* tagName for ie */\r
 406                                 if( node === parent ) return true;\r
 407                                 node = node.parentNode;\r
 408                         };\r
 409                         return false;\r
 410                 },\r
 411 \r
 412                 /**\r
 413                  * get the center of all the touches\r
 414                  * @param   {Array}     touches\r
 415                  * @returns {Object}    center\r
 416                  */\r
 417                 getCenter : function getCenter(touches) {\r
 418                         var i = 0,\r
 419                                 l = touches.length,\r
 420                                 valuesX, valuesY;\r
 421                         switch( l ){\r
 422                                 case 0 :\r
 423                                         return {};\r
 424                                 case 1 :\r
 425                                         return {\r
 426                                                 pageX : touches[ 0 ].pageX,\r
 427                                                 pageY : touches[ 0 ].pageY\r
 428                                         };\r
 429                                 case 2 :\r
 430                                         return {\r
 431                                                 pageX : ( touches[ 0 ].pageX + touches[ 1 ].pageX ) / 2,\r
 432                                                 pageY : ( touches[ 0 ].pageY + touches[ 1 ].pageY ) / 2\r
 433                                         };\r
 434                         };\r
 435                         valuesX = [];\r
 436                         valuesY = [];\r
 437                         for( ; i < l; ++i ){\r
 438                                 valuesX[ valuesX.length ] = touches[ i ].pageX;\r
 439                                 valuesY[ valuesY.length ] = touches[ i ].pageY;\r
 440                         };\r
 441                         return {\r
 442                                 pageX : ( ( Math.min.apply( null, valuesX ) + Math.max.apply( null, valuesX ) ) / 2 ),\r
 443                                 pageY : ( ( Math.min.apply( null, valuesY ) + Math.max.apply( null, valuesY ) ) / 2 )\r
 444                         };\r
 445                 },\r
 446 \r
 447                 /**\r
 448                  * calculate the velocity between two points\r
 449                  * @param   {Number}    deltaTime\r
 450                  * @param   {Number}    deltaX\r
 451                  * @param   {Number}    deltaY\r
 452                  * @returns {Object}    velocity\r
 453                  */\r
 454                 getVelocity : function getVelocity( deltaTime, deltaX, deltaY ) {\r
 455                         return {\r
 456                                 x : ABS( deltaX / deltaTime ) || 0,\r
 457                                 y : ABS( deltaY / deltaTime ) || 0\r
 458                         };\r
 459                 },\r
 460 \r
 461                 /**\r
 462                  * calculate the angle between two coordinates\r
 463                  * @param   {Touch}     touch1\r
 464                  * @param   {Touch}     touch2\r
 465                  * @returns {Number}    angle\r
 466                  */\r
 467                 getAngle : function getAngle(touch1, touch2) {\r
 468                         var y = touch2.pageY - touch1.pageY,\r
 469                                 x = touch2.pageX - touch1.pageX;\r
 470                         return Math.atan2( y, x ) * 180 / Math.PI;\r
 471                 },\r
 472 \r
 473                 /**\r
 474                  * angle to direction define\r
 475                  * @param   {Touch}     touch1\r
 476                  * @param   {Touch}     touch2\r
 477                  * @returns {String}    direction constant, like Hammer.DIRECTION_LEFT\r
 478                  */\r
 479                 getDirection : function getDirection( touch1, touch2 ){\r
 480                         var x = touch1.pageX - touch2.pageX,\r
 481                                 y = touch1.pageY - touch2.pageY;\r
 482                         return ABS( y ) <= ABS( x ) ?\r
 483                                 ( x > 0 ? Hammer.DIRECTION_LEFT : Hammer.DIRECTION_RIGHT ) :\r
 484                                 ( y > 0 ? Hammer.DIRECTION_UP   : Hammer.DIRECTION_DOWN );\r
 485                 },\r
 486 \r
 487                 /**\r
 488                  * calculate the distance between two touches\r
 489                  * @param   {Touch}     touch1\r
 490                  * @param   {Touch}     touch2\r
 491                  * @returns {Number}    distance\r
 492                  */\r
 493                 getDistance : function getDistance( touch1, touch2 ){\r
 494                         var x = touch2.pageX - touch1.pageX,\r
 495                                 y = touch2.pageY - touch1.pageY;\r
 496                         return Math.sqrt( ( x * x ) + ( y * y ) );\r
 497                 },\r
 498 \r
 499                 /**\r
 500                  * calculate the scale factor between two touchLists (fingers)\r
 501                  * no scale is 1, and goes down to 0 when pinched together, and bigger when pinched out\r
 502                  * @param   {Array}     start\r
 503                  * @param   {Array}     end\r
 504                  * @returns {Number}    scale\r
 505                  */\r
 506                 getScale : function getScale( start, end ){\r
 507                         // need two fingers...\r
 508                         return ( 2 <= start.length && 2 <= end.length ) ?\r
 509                                 Utils.getDistance( end[ 0 ], end[ 1 ] ) / Utils.getDistance( start[ 0 ], start[ 1 ] ) :\r
 510                                 1;\r
 511                 },\r
 512 \r
 513                 /**\r
 514                  * calculate the rotation degrees between two touchLists (fingers)\r
 515                  * @param   {Array}     start\r
 516                  * @param   {Array}     end\r
 517                  * @returns {Number}    rotation\r
 518                  */\r
 519                 getRotation : function getRotation( start, end ){\r
 520                         // need two fingers\r
 521                         return ( 2 <= start.length && 2 <= end.length ) ?\r
 522                                 Utils.getAngle( end[ 1 ], end[ 0 ] ) - Utils.getAngle( start[ 1 ], start[ 0 ] ) :\r
 523                                 0;\r
 524                 },\r
 525 \r
 526                 /**\r
 527                  * boolean if the direction is vertical\r
 528                  * @param    {String}    direction\r
 529                  * @returns  {Boolean}   is_vertical\r
 530                  */\r
 531                 isVertical : function isVertical( direction ){\r
 532                         return direction === Hammer.DIRECTION_UP || direction === Hammer.DIRECTION_DOWN;\r
 533                 }\r
 534         };\r
 535         \r
 536         /**\r
 537          * this holds the last move event,\r
 538          * used to fix empty touchend issue\r
 539          * see the onTouch event for an explanation\r
 540          * @type {Object}\r
 541          */\r
 542         var last_move_event = null;\r
 543 \r
 544         /**\r
 545          * when the mouse is hold down, this is true\r
 546          * @type {Boolean}\r
 547          */\r
 548         var enable_detect = false;\r
 549 \r
 550         /**\r
 551          * when touch events have been fired, this is true\r
 552          * @type {Boolean}\r
 553          */\r
 554         var touch_triggered = false;\r
 555         \r
 556         Detection = {\r
 557                 // contains all registred Gestures in the correct order\r
 558                 gestures : [],\r
 559 \r
 560                 // data of the current Hammer.gesture detection session\r
 561                 current : null,\r
 562 \r
 563                 // the previous Hammer.gesture session data\r
 564                 // is a full clone of the previous gesture.current object\r
 565                 previous : null,\r
 566 \r
 567                 // when this becomes true, no gestures are fired\r
 568                 stopped : false,\r
 569 \r
 570                 /**\r
 571                  * clear the Hammer.gesture vars\r
 572                  * this is called on endDetect, but can also be used when a final Hammer.gesture has been detected\r
 573                  * to stop other Gestures from being fired\r
 574                  */\r
 575                 stopDetect : function stopDetect() {\r
 576                         // clone current data to the store as the previous gesture\r
 577                         // used for the double tap gesture, since this is an other gesture detect session\r
 578                         Detection.previous = Utils.extend( {}, Detection.current );\r
 579 \r
 580                         // reset the current\r
 581                         Detection.current = null;\r
 582 \r
 583                         // stopped!\r
 584                         Detection.stopped = true;\r
 585                 },\r
 586 \r
 587                 /**\r
 588                  * register new gesture\r
 589                  * @param   {Object}    gesture object, see gestures.js for documentation\r
 590                  * @returns {Array}     gestures\r
 591                  */\r
 592                 register : function( gesture ){\r
 593                         // add an enable gesture options if there is no given\r
 594                         var options = gesture.defaults || {},\r
 595                                 list    = Detection.gestures,\r
 596                                 _index, i = 0, l = list.length, index;\r
 597                         if( options[ gesture.name ] === undefined ) options[ gesture.name ] = true;\r
 598 \r
 599                         // extend Hammer default options with the Hammer.gesture options\r
 600                         Utils.extend( Hammer.defaults, options, true );\r
 601 \r
 602                         // set its index\r
 603                         gesture.index = gesture.index || 1000;\r
 604 \r
 605                         // add Hammer.gesture to the list\r
 606                         //Detection.gestures.push( gesture );\r
 607 \r
 608                         // sort the list by index\r
 609                         //Detection.gestures.sort( function( a, b ){\r
 610                         //      return\r
 611                         //              a.index < b.index ? -1 :\r
 612                         //              a.index > b.index ? 1 : 0;\r
 613                         //});\r
 614                         if( l === 0 ){\r
 615                                 list[ 0 ] = gesture;\r
 616                                 return;\r
 617                         };\r
 618                         _index = gesture.index;\r
 619                         for( i = 0; i < l; ++i ){\r
 620                                 index = list[ i ].index;\r
 621                                 if( i === 0 && _index < index ){\r
 622                                         list.unshift( gesture );\r
 623                                         return;\r
 624                                 } else\r
 625                                 if( i === l - 1 ){\r
 626                                         list[ l ] = gesture;\r
 627                                         return;\r
 628                                 } else\r
 629                                 if( index <= _index && _index < list[ i + 1 ].index ){\r
 630                                         list.splice( i, 0, gesture );\r
 631                                         return;\r
 632                                 };\r
 633                         };\r
 634                 }\r
 635         };\r
 636 \r
 637         var Gestures = Gestures || {};\r
 638 \r
 639         /**\r
 640          * Custom gestures\r
 641          * ==============================\r
 642          *\r
 643          * Gesture object\r
 644          * --------------------\r
 645          * The object structure of a gesture:\r
 646          *\r
 647          * { name: 'mygesture',\r
 648          *   index: 1337,\r
 649          *   defaults: {\r
 650          *     mygesture_option: true\r
 651          *   }\r
 652          *   handler: function(type, e, inst) {\r
 653          *     // trigger gesture event\r
 654          *     inst.trigger(this.name, e );\r
 655          *   }\r
 656          * }\r
 657 \r
 658          * @param   {String}    name\r
 659          * this should be the name of the gesture, lowercase\r
 660          * it is also being used to disable/enable the gesture per instance config.\r
 661          *\r
 662          * @param   {Number}    [index=1000]\r
 663          * the index of the gesture, where it is going to be in the stack of gestures detection\r
 664          * like when you build an gesture that depends on the drag gesture, it is a good\r
 665          * idea to place it after the index of the drag gesture.\r
 666          *\r
 667          * @param   {Object}    [defaults={}]\r
 668          * the default settings of the gesture. these are added to the instance settings,\r
 669          * and can be overruled per instance. you can also add the name of the gesture,\r
 670          * but this is also added by default (and set to true).\r
 671          *\r
 672          * @param   {Function}  handler\r
 673          * this handles the gesture detection of your custom gesture and receives the\r
 674          * following arguments:\r
 675          *\r
 676          *      @param  {Object}    eventData\r
 677          *      event data containing the following properties:\r
 678          *          timeStamp   {Number}        time the event occurred\r
 679          *          target      {HTMLElement}   target element\r
 680          *          touches     {Array}         touches (fingers, pointers, mouse) on the screen\r
 681          *          pointerType {String}        kind of pointer that was used. matches Hammer.POINTER_MOUSE|TOUCH\r
 682          *          center      {Object}        center position of the touches. contains pageX and pageY\r
 683          *          deltaTime   {Number}        the total time of the touches in the screen\r
 684          *          deltaX      {Number}        the delta on x axis we haved moved\r
 685          *          deltaY      {Number}        the delta on y axis we haved moved\r
 686          *          velocityX   {Number}        the velocity on the x\r
 687          *          velocityY   {Number}        the velocity on y\r
 688          *          angle       {Number}        the angle we are moving\r
 689          *          direction   {String}        the direction we are moving. matches Hammer.DIRECTION_UP|DOWN|LEFT|RIGHT\r
 690          *          distance    {Number}        the distance we haved moved\r
 691          *          scale       {Number}        scaling of the touches, needs 2 touches\r
 692          *          rotation    {Number}        rotation of the touches, needs 2 touches *\r
 693          *          eventType   {String}        matches Hammer.EVENT_START|MOVE|END\r
 694          *          srcEvent    {Object}        the source event, like TouchStart or MouseDown *\r
 695          *          startEvent  {Object}        contains the same properties as above,\r
 696          *                                      but from the first touch. this is used to calculate\r
 697          *                                      distances, deltaTime, scaling etc\r
 698          *\r
 699          *      @param  {Hammer.Instance}    inst\r
 700          *      the instance we are doing the detection for. you can get the options from\r
 701          *      the inst.options object and trigger the gesture event by calling inst.trigger\r
 702          *\r
 703          *\r
 704          * Handle gestures\r
 705          * --------------------\r
 706          * inside the handler you can get/set Detection.current. This is the current\r
 707          * detection session. It has the following properties\r
 708          *      @param  {String}    name\r
 709          *      contains the name of the gesture we have detected. it has not a real function,\r
 710          *      only to check in other gestures if something is detected.\r
 711          *      like in the drag gesture we set it to 'drag' and in the swipe gesture we can\r
 712          *      check if the current gesture is 'drag' by accessing Detection.current.name\r
 713          *\r
 714          *      @readonly\r
 715          *      @param  {Hammer.Instance}    inst\r
 716          *      the instance we do the detection for\r
 717          *\r
 718          *      @readonly\r
 719          *      @param  {Object}    startEvent\r
 720          *      contains the properties of the first gesture detection in this session.\r
 721          *      Used for calculations about timing, distance, etc.\r
 722          *\r
 723          *      @readonly\r
 724          *      @param  {Object}    lastEvent\r
 725          *      contains all the properties of the last gesture detect in this session.\r
 726          *\r
 727          * after the gesture detection session has been completed (user has released the screen)\r
 728          * the Detection.current object is copied into Detection.previous,\r
 729          * this is usefull for gestures like doubletap, where you need to know if the\r
 730          * previous gesture was a tap\r
 731          *\r
 732          * options that have been set by the instance can be received by calling inst.options\r
 733          *\r
 734          * You can trigger a gesture event by calling inst.trigger("mygesture", event).\r
 735          * The first param is the name of your gesture, the second the event argument\r
 736          *\r
 737          *\r
 738          * Register gestures\r
 739          * --------------------\r
 740          * When an gesture is added to the Gestures object, it is auto registered\r
 741          * at the setup of the first Hammer instance. You can also call Detection.register\r
 742          * manually and pass your gesture object as a param\r
 743          *\r
 744          */\r
 745 \r
 746         /**\r
 747          * Hold\r
 748          * Touch stays at the same place for x time\r
 749          * @events  hold holdend\r
 750          */\r
 751         Gestures.Hold = {\r
 752                 name    : 'hold',\r
 753                 index   : 10,\r
 754                 startID : X.UI.Event.HOLD,\r
 755                 endID   : X.UI.Event.HOLD_END,\r
 756                 defaults : {\r
 757                         hold_timeout   : 500,\r
 758                         hold_threshold : 1\r
 759                 },\r
 760                 timerID : null,\r
 761                 holding : false,\r
 762                 handler : function holdGesture( e, hammer ){\r
 763                         switch( e.eventType ){\r
 764                                 case START :\r
 765                                         // clear any running timers\r
 766                                         this.timerID && X.Timer.remove( this.timerID );\r
 767 \r
 768                                         // set the gesture so we can check in the timeout if it still is\r
 769                                         Detection.current.name = this.name;\r
 770                                         Gestures.Hold.holding = false;\r
 771                                         \r
 772                                         // set timer and if after the timeout it still is hold,\r
 773                                         // we trigger the hold event\r
 774                                         this.timerID = X.Timer.add( hammer.options.hold_timeout, 1, Gestures.Hold._onTimer, [ e, hammer ] );\r
 775                                         return;\r
 776 \r
 777                                 // when you move or end we clear the timer\r
 778                                 case MOVE :\r
 779                                         if( e.distance <= hammer.options.hold_threshold ) return;\r
 780                                 case END :\r
 781                                         this.timerID && X.Timer.remove( this.timerID );\r
 782                                         if( Gestures.Hold.holding === true ){\r
 783                                                 Gestures.Hold.holding = false;\r
 784                                                 return hammer.trigger( X.UI.Event.HOLD_END, e );\r
 785                                         };\r
 786                                         break;\r
 787                         };\r
 788                 },\r
 789                 _onTimer : function( e, hammer ){\r
 790                         if( Detection.current.name === 'hold' ){\r
 791                                 hammer.trigger( X.UI.Event.HOLD, e );\r
 792                                 Gestures.Hold.holding = true;\r
 793                         };\r
 794                 }\r
 795         };\r
 796 \r
 797         /**\r
 798          * Tap/DoubleTap\r
 799          * Quick touch at a place or double at the same place\r
 800          * @events  tap, doubletap\r
 801          */\r
 802         Gestures.Tap = {\r
 803                 name     : 'tap',\r
 804                 index    : 100,\r
 805                 startID  : X.UI.Event.TAP,\r
 806                 endID    : X.UI.Event.DOUBLE_TAP,\r
 807                 defaults : {\r
 808                         tap_max_touchtime  : 250,\r
 809                         tap_max_distance   : 10,\r
 810                         tap_always         : true,\r
 811                         doubletap_distance : 20,\r
 812                         doubletap_interval : 300\r
 813                 },\r
 814                 handler : function tapGesture( e, hammer ){\r
 815                         // previous gesture, for the double tap since these are two different gesture detections\r
 816                         var prev = Detection.previous;\r
 817                         if( e.eventType === END ){\r
 818                                 // when the touchtime is higher then the max touch time\r
 819                                 // or when the moving distance is too much\r
 820                                 if( hammer.options.tap_max_touchtime < e.deltaTime || hammer.options.tap_max_distance < e.distance ) return;\r
 821 \r
 822                                 // check if double tap\r
 823                                 if( prev && prev.name === 'tap' && ( e.timeStamp - prev.lastEvent.timeStamp ) < hammer.options.doubletap_interval && e.distance < hammer.options.doubletap_distance ){\r
 824                                         return hammer.trigger( X.UI.Event.DOUBLE_TAP, e );\r
 825                                 } else\r
 826                                 // do a single tap\r
 827                                 if( hammer.options.tap_always && Detection.current.name !== 'tap' ){ // EventFire中にalert すると mouseleave で再び呼ばれるのを防ぐ\r
 828                                         Detection.current.name = 'tap';\r
 829                                         return hammer.trigger( X.UI.Event.TAP, e );\r
 830                                 };\r
 831                         };\r
 832                 }\r
 833         };\r
 834 \r
 835         /**\r
 836          * Swipe\r
 837          * triggers swipe events when the end velocity is above the threshold\r
 838          * @events  swipe, swipeleft, swiperight, swipeup, swipedown\r
 839          */\r
 840         Gestures.Swipe = {\r
 841                 name     : 'swipe',\r
 842                 index    : 40,\r
 843                 startID  : X.UI.Event.SWIP,\r
 844                 endID    : X.UI.Event.SWIP_DOWN,\r
 845                 defaults : {\r
 846                         // set 0 for unlimited, but this can conflict with transform\r
 847                         swipe_max_touches : 1,\r
 848                         swipe_velocity    : 0.7\r
 849                 },\r
 850                 handler : function swipeGesture(e, hammer) {\r
 851                         if( e.eventType === END ){\r
 852                                 // max touches\r
 853                                 if( 0 < hammer.options.swipe_max_touches && hammer.options.swipe_max_touches < e.touches.length ) return;\r
 854 \r
 855                                 // when the distance we moved is too small we skip this gesture\r
 856                                 // or we can be already in dragging\r
 857                                 if( hammer.options.swipe_velocity < e.velocityX || hammer.options.swipe_velocity < e.velocityY ){\r
 858                                         // trigger swipe events\r
 859                                         hammer.trigger( X.UI.Event.SWIP, e );\r
 860                                         hammer.trigger(\r
 861                                                 e.direction === Hammer.DIRECTION_UP ?\r
 862                                                         X.UI.Event.SWIP_UP :\r
 863                                                 e.direction === Hammer.DIRECTION_DOWN ?\r
 864                                                         X.UI.Event.SWIP_DOWN :\r
 865                                                 e.direction === Hammer.DIRECTION_LEFT ?\r
 866                                                         X.UI.Event.SWIP_LEFT :\r
 867                                                         X.UI.Event.SWIP_RIGHT,\r
 868                                                 e\r
 869                                         );\r
 870                                 };\r
 871                         };\r
 872                 }\r
 873         };\r
 874 \r
 875         /**\r
 876          * Drag\r
 877          * Move with x fingers (default 1) around on the page. Blocking the scrolling when\r
 878          * moving left and right is a good practice. When all the drag events are blocking\r
 879          * you disable scrolling on that area.\r
 880          * @events  drag, dragstart, dragend, drapleft, dragright, dragup, dragdown\r
 881          */\r
 882         Gestures.Drag = {\r
 883                 name     : 'drag',\r
 884                 index    : 50,\r
 885                 startID  : X.UI.Event.DRAG,\r
 886                 endID    : X.UI.Event.DRAG_DOWN,\r
 887                 defaults : {\r
 888                         drag_min_distance : 10,\r
 889                         // set 0 for unlimited, but this can conflict with transform\r
 890                         drag_max_touches : 1,\r
 891                         // prevent default browser behavior when dragging occurs\r
 892                         // be careful with it, it makes the element a blocking element\r
 893                         // when you are using the drag gesture, it is a good practice to set this true\r
 894                         drag_block_horizontal : false,\r
 895                         drag_block_vertical : false,\r
 896                         // drag_lock_to_axis keeps the drag gesture on the axis that it started on,\r
 897                         // It disallows vertical directions if the initial direction was horizontal, and vice versa.\r
 898                         drag_lock_to_axis : false,\r
 899                         // drag lock only kicks in when distance > drag_lock_min_distance\r
 900                         // This way, locking occurs only when the distance has become large enough to reliably determine the direction\r
 901                         drag_lock_min_distance : 25\r
 902                 },\r
 903                 triggered : false,\r
 904                 handler : function dragGesture( e, hammer ){\r
 905                         var last_direction;\r
 906                         // current gesture isnt drag, but dragged is true\r
 907                         // this means an other gesture is busy. now call dragend\r
 908                         if( Detection.current.name !== this.name && this.triggered ){\r
 909                                 hammer.trigger( X.UI.Event.DRAG_END, e );\r
 910                                 this.triggered = false;\r
 911                                 return;\r
 912                         };\r
 913 \r
 914                         // max touches\r
 915                         if( 0 < hammer.options.drag_max_touches && hammer.options.drag_max_touches < e.touches.length ) return;\r
 916 \r
 917                         switch( e.eventType ){\r
 918                                 case START:\r
 919                                         this.triggered = false;\r
 920                                         break;\r
 921 \r
 922                                 case MOVE :\r
 923                                         // when the distance we moved is too small we skip this gesture\r
 924                                         // or we can be already in dragging\r
 925                                         if( e.distance < hammer.options.drag_min_distance && Detection.current.name !== this.name ) return;\r
 926 \r
 927                                         // we are dragging!\r
 928                                         Detection.current.name = this.name;\r
 929 \r
 930                                         // lock drag to axis?\r
 931                                         if( Detection.current.lastEvent.drag_locked_to_axis || ( hammer.options.drag_lock_to_axis && hammer.options.drag_lock_min_distance <= e.distance ) ){\r
 932                                                 e.drag_locked_to_axis = true;\r
 933                                         };\r
 934                                         last_direction = Detection.current.lastEvent.direction;\r
 935                                         if( e.drag_locked_to_axis && last_direction !== e.direction ){\r
 936                                                 // keep direction on the axis that the drag gesture started on\r
 937                                                 e.direction = Utils.isVertical( last_direction ) ?\r
 938                                                         ( e.deltaY < 0 ? Hammer.DIRECTION_UP   : Hammer.DIRECTION_DOWN ) :\r
 939                                                         ( e.deltaX < 0 ? Hammer.DIRECTION_LEFT : Hammer.DIRECTION_RIGHT );\r
 940                                         };\r
 941 \r
 942                                         // first time, trigger dragstart event\r
 943                                         if( !this.triggered ){\r
 944                                                 hammer.trigger( X.UI.Event.DRAG_START, e );\r
 945                                                 this.triggered = true;\r
 946                                         };\r
 947 \r
 948                                         // trigger normal event\r
 949                                         hammer.trigger( X.UI.Event.DRAG, e );\r
 950 \r
 951                                         // direction event, like dragdown\r
 952                                         hammer.trigger(\r
 953                                                 e.direction === Hammer.DIRECTION_UP ?\r
 954                                                         X.UI.Event.DRAG_UP :\r
 955                                                 e.direction === Hammer.DIRECTION_DOWN ?\r
 956                                                         X.UI.Event.DRAG_DOWN :\r
 957                                                 e.direction === Hammer.DIRECTION_LEFT ?\r
 958                                                         X.UI.Event.DRAG_LEFT :\r
 959                                                         X.UI.Event.DRAG_RIGHT,\r
 960                                                 e\r
 961                                         );\r
 962 \r
 963                                         // block the browser events\r
 964                                         (\r
 965                                                 ( hammer.options.drag_block_vertical   &&  Utils.isVertical( e.direction ) ) ||\r
 966                                                 ( hammer.options.drag_block_horizontal && !Utils.isVertical( e.direction ) )\r
 967                                         ) && e.preventDefault();\r
 968                                         break;\r
 969 \r
 970                                 case END:\r
 971                                         // trigger dragend\r
 972                                         this.triggered && hammer.trigger( X.UI.Event.DRAG_END, e );\r
 973                                         this.triggered = false;\r
 974                                         break;\r
 975                         }\r
 976                 }\r
 977         };\r
 978 \r
 979         /**\r
 980          * Transform\r
 981          * User want to scale or rotate with 2 fingers\r
 982          * @events  transform, transformstart, transformend, pinch, pinchin, pinchout, rotate\r
 983          */\r
 984         Gestures.Transform = {\r
 985                 name     : 'transform',\r
 986                 index    : 45,\r
 987                 startID  : X.UI.Event.TRANSFORM,\r
 988                 endID    : X.UI.Event.ROTATE,\r
 989                 defaults : {\r
 990                         // factor, no scale is 1, zoomin is to 0 and zoomout until higher then 1\r
 991                         transform_min_scale : 0.01,\r
 992                         // rotation in degrees\r
 993                         transform_min_rotation : 1,\r
 994                         // prevent default browser behavior when two touches are on the screen\r
 995                         // but it makes the element a blocking element\r
 996                         // when you are using the transform gesture, it is a good practice to set this true\r
 997                         transform_always_block : false\r
 998                 },\r
 999                 triggered : false,\r
1000                 handler : function transformGesture( e, hammer ){\r
1001                         // current gesture isnt drag, but dragged is true\r
1002                         // this means an other gesture is busy. now call dragend\r
1003                         if( Detection.current.name !== this.name && this.triggered ){\r
1004                                 hammer.trigger( X.UI.Event.TRANSFORM_END, e );\r
1005                                 this.triggered = false;\r
1006                                 return;\r
1007                         };\r
1008 \r
1009                         // atleast multitouch\r
1010                         if( e.touches.length < 2 ) return;\r
1011 \r
1012                         // prevent default when two fingers are on the screen\r
1013                         hammer.options.transform_always_block && e.preventDefault();\r
1014 \r
1015                         switch(e.eventType) {\r
1016                                 case START:\r
1017                                         this.triggered = false;\r
1018                                         break;\r
1019 \r
1020                                 case MOVE:\r
1021                                         var scale_threshold    = ABS( 1 - e.scale ),\r
1022                                                 rotation_threshold = ABS( e.rotation );\r
1023 \r
1024                                         // when the distance we moved is too small we skip this gesture\r
1025                                         // or we can be already in dragging\r
1026                                         if( scale_threshold < hammer.options.transform_min_scale && rotation_threshold < hammer.options.transform_min_rotation ) return;\r
1027 \r
1028                                         // we are transforming!\r
1029                                         Detection.current.name = this.name;\r
1030 \r
1031                                         // first time, trigger dragstart event\r
1032                                         if( !this.triggered ){\r
1033                                                 hammer.trigger( X.UI.Event.TRANSFORM_START, e );\r
1034                                                 this.triggered = true;\r
1035                                         };\r
1036 \r
1037                                         hammer.trigger( X.UI.Event.TRANSFORM, e );\r
1038                                         // basic transform event\r
1039 \r
1040                                         // trigger rotate event\r
1041                                         hammer.options.transform_min_rotation < rotation_threshold && hammer.trigger( X.UI.Event.ROTATE, e );\r
1042 \r
1043                                         // trigger pinch event\r
1044                                         if( scale_threshold > hammer.options.transform_min_scale ){\r
1045                                                 hammer.trigger( X.UI.Event.PINCH, e );\r
1046                                                 hammer.trigger( e.scale < 1 ? X.UI.Event.PINCH_IN : X.UI.Event.PINCH_OUT, e );\r
1047                                         };\r
1048                                         break;\r
1049 \r
1050                                 case END:\r
1051                                         // trigger dragend\r
1052                                         this.triggered && hammer.trigger( X.UI.Event.TRANSFORM_END, e );\r
1053                                         this.triggered = false;\r
1054                                         break;\r
1055                         };\r
1056                 }\r
1057         };\r
1058 \r
1059         /**\r
1060          * Touch\r
1061          * Called as first, tells the user has touched the screen\r
1062          * @events  touch\r
1063          */\r
1064         Gestures.Touch = {\r
1065                 name     : 'touch',\r
1066                 index    : -Infinity,\r
1067                 defaults : {\r
1068                         // call preventDefault at touchstart, and makes the element blocking by\r
1069                         // disabling the scrolling of the page, but it improves gestures like\r
1070                         // transforming and dragging.\r
1071                         // be careful with using this, it can be very annoying for users to be stuck\r
1072                         // on the page\r
1073                         prevent_default : false,\r
1074 \r
1075                         // disable mouse events, so only touch (or pen!) input triggers events\r
1076                         prevent_mouseevents : false\r
1077                 },\r
1078                 handler : function touchGesture( e, hammer ){\r
1079                         if( hammer.options.prevent_mouseevents && e.pointerType === MOUSE ){\r
1080                                 Detection.stopDetect();\r
1081                                 return;\r
1082                         };\r
1083 \r
1084                         hammer.options.prevent_default && e.preventDefault();\r
1085 \r
1086                         e.eventType === START && hammer.trigger( this.name, e );\r
1087                 }\r
1088         };\r
1089 \r
1090         /**\r
1091          * Release\r
1092          * Called as last, tells the user has released the screen\r
1093          * @events  release\r
1094          */\r
1095         Gestures.Release = {\r
1096                 name    : 'release',\r
1097                 index   : Infinity,\r
1098                 handler : function releaseGesture( e, hammer ){\r
1099                         e.eventType === END && hammer.trigger( this.name, e );\r
1100                 }\r
1101         };\r
1102         \r
1103 })( Math, window, document );