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