2 * Hammer.JS - v1.0.5 - 2013-04-07
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3 * http://eightmedia.github.com/hammer.js
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4 * Jorik Tangelder <j.tangelder@gmail.com>, MIT license
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7 ( function( Math, window, document, undefined ){
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9 var ELEENT_LIST = [],
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12 ABS = new Function( 'v', 'return v<0?-v:v' );
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14 X.UI.Gesture = Hammer;
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16 function Hammer( uinodeRoot, uinode, type ){
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17 this.uinode = uinode;
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18 this.enabled = true;
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20 Hammer.startup && Hammer.startup( uinodeRoot );
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22 this.options = Hammer.defaults;
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24 // start detection on touchstart
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25 Utils.addEvents( uinode, Hammer.EVENT_TYPES_START, this );
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27 this.listen( type );
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30 Hammer.defaults = {};
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32 Hammer.prototype.handleEvent = function( e ){
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33 //var sourceEventType = e.type.toLowerCase();
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35 var type = IdToGestureID[ e.type ],
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36 gestures = Detection.gestures,
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37 numTouches = 0,// count the total touches on the screen
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38 pointerType, i, l, touches, ret, active, gesture, startEv,
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39 hammer, deltaTime, deltaX, deltaY, velocity;
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43 if( e.pointerType ){
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45 switch( e.pointerType ){
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47 case 2 : //e.MSPOINTER_TYPE_TOUCH :
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48 type |= TOUCH; break;
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50 case 3 : //e.MSPOINTER_TYPE_PEN :
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53 case 4 : //e.MSPOINTER_TYPE_MOUSE :
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54 type |= MOUSE; break;
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65 // onmouseup, but when touchend has been fired we do nothing.
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66 // this is for touchdevices which also fire a mouseup on touchend
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67 if( type & MOUSE && touch_triggered ){
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68 return X.Callback.STOP_NOW | X.Callback.PREVENT_DEFAULT;
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70 // mousebutton must be down or a touch event
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72 type & TOUCH || //sourceEventType.match(/touch/) || // touch events are always on screen
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73 ( type & POINTER && type & START ) || //sourceEventType.match(/pointerdown/) || // pointerevents touch
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74 ( type & MOUSE && e.which === 1 ) //(sourceEventType.match(/mouse/) && e.which === 1) // mouse is pressed
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76 enable_detect = true;
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79 // we are in a touch event, set the touch triggered bool to true,
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80 // this for the conflicts that may occur on ios and android
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81 type & ( TOUCH | POINTER ) && ( touch_triggered = true );
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82 //if (sourceEventType.match(/touch|pointer/)) { touch_triggered = true;}
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84 // when touch has been triggered in this detection session
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85 // and we are now handling a mouse event, we stop that to prevent conflicts
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86 if( enable_detect ){
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87 // update pointerevent
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88 if( Hammer.HAS_POINTEREVENTS ){ //eventType !== Hammer.EVENT_END ){
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89 POINTERS[ e.identifier = e.pointerId ] = type & END ? null : e;
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91 // we can use forEach since pointerEvents only is in IE10
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92 for( i = 0, l = POINTERS.length; i < l; ++i ){
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93 POINTERS[ i ] && ( touches[ touches.length ] = POINTERS[ i ] );
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95 numTouches = touches.length;
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98 if ( type & TOUCH ){ //sourceEventType.match(/touch/)) {
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99 touches = Hammer.DO_TOUCHES_FIX && type & END ? [] : e.touches;
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100 numTouches = touches.length;
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103 if( !touch_triggered ){
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104 numTouches = ( type & END ) ? 0 : 1;
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105 touches = numTouches === 0 ? [] : [{
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112 // if we are in a end event, but when we remove one touch and
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113 // we still have enough, set eventType to move
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114 if( 0 < numTouches && type & END ){ // eventType === Hammer.EVENT_END ){
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115 type = type & POINTER_TYPE_MASK | MOVE;
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116 //eventType = Hammer.EVENT_MOVE;
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117 } else if( !numTouches ){
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118 // no touches, force the end event
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119 type = type & POINTER_TYPE_MASK | END;
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120 //eventType = Hammer.EVENT_END;
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123 // because touchend has no touches, and we often want to use these in our gestures,
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124 // we send the last move event as our eventData in touchend
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125 ( !numTouches && last_move_event !== null ) ?
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126 ( e = last_move_event ):
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127 ( last_move_event = e ); // store the last move event
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130 center : Utils.getCenter( touches ),
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131 timeStamp : Date.now ? Date.now() : +new Date,
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134 eventType : type & EVENT_TYPE_MASK,
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135 pointerType : type & POINTER_TYPE_MASK
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138 if( type & START ){
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139 if( !this.enabled ) return;
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140 // already busy with a Hammer.gesture detection on an element
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141 if( Detection.current ) return;
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142 Detection.current = {
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143 hammer : this, // reference to HammerInstance we're working for
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144 startEvent : Utils.extend( {}, e ), // start eventData for distances, timing etc
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145 lastEvent : false, // last eventData
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146 name : '' // current gesture we're in/detected, can be 'tap', 'hold' etc
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148 Detection.stopped = false;
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150 active = hammer.activeGesture;
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152 if( !Detection.current || Detection.stopped ){
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155 hammer = Detection.current.hammer;
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156 active = hammer.activeGesture;
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159 // ----------------------------------------------------------------------------------------------------------------
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160 // ret = Detection.detect( e );
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162 // ----------------------------------------------------------------------------------------------------------------
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163 // extend event data with calculations about scale, distance etc
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164 // e = Detection.extendEventData( e );
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165 startEv = Detection.current.startEvent;
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168 // if the touches change, set the new touches over the startEvent touches
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169 // this because touchevents don't have all the touches on touchstart, or the
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170 // user must place his fingers at the EXACT same time on the screen, which is not realistic
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171 // but, sometimes it happens that both fingers are touching at the EXACT same time
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172 if( startEv && ( numTouches !== startEv.touches.length || touches === startEv.touches ) ){
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173 // extend 1 level deep to get the touchlist with the touch objects
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174 startEv.touches.length = i = 0;
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175 for( ; i < numTouches; ++i ){
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176 startEv.touches[ startEv.touches.length ] = Utils.extend( {}, touches[ i ] );
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180 deltaTime = e.timeStamp - startEv.timeStamp;
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181 deltaX = center.pageX - startEv.center.pageX;
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182 deltaY = center.pageY - startEv.center.pageY;
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183 velocity = Utils.getVelocity( deltaTime, deltaX, deltaY );
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186 deltaTime : deltaTime,
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191 velocityX : velocity.x,
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192 velocityY : velocity.y,
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194 distance : Utils.getDistance( startEv.center, center ),
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195 angle : Utils.getAngle( startEv.center, center ),
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196 direction : Utils.getDirection( startEv.center, center ),
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198 scale : Utils.getScale( startEv.touches, touches ),
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199 rotation : Utils.getRotation( startEv.touches, touches ),
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201 startEvent : startEv
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204 // store as previous event event
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205 Detection.current.lastEvent = e;
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207 // call Hammer.gesture handlers
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208 for( i = 0, l = gestures.length; i < l; ++i ){
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209 gesture = gestures[ i ];
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210 if( Detection.stopped ) break;
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211 //if( active[ gesture.name ] ) console.log( gesture.name );
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212 // only when the instance options have enabled this gesture
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213 active[ gesture.name ] &&
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214 // if a handler returns false, we stop with the detection
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215 ( ret |= ( gesture.handler.call( gesture, e, hammer ) || X.Callback.NONE ) );
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218 // endevent, but not the last touch, so dont stop
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219 type & END && numTouches === 0 && Detection.stopDetect();
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221 // ----------------------------------------------------------------------------------------------------------------
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222 // trigger the handler
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223 //handler.call( context, HamEvent.collectEventData( element, eventType, e ) );
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225 // remove pointerevent from list
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226 if( Hammer.HAS_POINTEREVENTS && type & END ){ // eventType === Hammer.EVENT_END ){
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231 //debug(sourceEventType +" "+ eventType);
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233 // on the end we reset everything
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234 if( numTouches === 0 ){
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235 last_move_event = null;
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236 enable_detect = false;
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237 touch_triggered = false;
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238 POINTERS.length = 0;
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244 Hammer.startup = function( uinodeRoot ){
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245 // find what eventtypes we add listeners to
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247 * we have different events for each device/browser
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248 * determine what we need and set them in the Hammer.EVENT_TYPES constant
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250 // determine the eventtype we want to set
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251 // for non pointer events browsers and mixed browsers,
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252 // like chrome on windows8 touch laptop
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255 // Register all gestures inside Gestures
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256 for( name in Gestures ){
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257 //Gestures.hasOwnProperty( name ) &&
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258 Detection.register( Gestures[ name ] );
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261 if( X.Dom.EVENT_POINTER ){
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262 Hammer.EVENT_TYPES_START = [ X.UI.Event._POINTER_DOWN ];
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263 types = [ X.UI.Event._POINTER_MOVE, X.UI.Event._POINTER_UP, X.UI.Event._POINTER_CANCEL ];
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265 if( X.Dom.EVENT_TOUCH ){
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266 Hammer.EVENT_TYPES_START = [ X.UI.Event._TOUCH_START, X.UI.Event._MOUSE_DOWN ];
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267 types = [ X.UI.Event._MOUSE_MOVE, X.UI.Event._MOUSE_UP, X.UI.Event._MOUSE_CANCEL,
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268 X.UI.Event._TOUCH_MOVE, X.UI.Event._TOUCH_END, X.UI.Event._TOUCH_CANCEL ];
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270 Hammer.EVENT_TYPES_START = [ X.UI.Event._MOUSE_DOWN ];
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271 types = [ X.UI.Event._MOUSE_MOVE, X.UI.Event._MOUSE_UP, X.UI.Event._MOUSE_CANCEL ];
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274 // Add touch events on the document
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275 Utils.addEvents( uinodeRoot, types, Hammer.prototype.handleEvent );
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277 // Hammer is ready...!
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278 delete Hammer.startup;
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281 Hammer.prototype.trigger = function( type, gesture ){
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282 if( !this.types[ type ] ) return;
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283 var e = Utils.extend( {}, gesture );
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285 return this.uinode.dispatch( e );
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288 Hammer.prototype.listen = function( type ){
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289 var gestures = Detection.gestures,
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290 i = gestures.length, g;
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292 g = gestures[ --i ];
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293 if( g.startID <= type && type <= g.endID ){
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294 if( !this.activeGesture ) this.activeGesture = {};
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295 if( !this.types ) this.types = {};
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296 this.activeGesture[ g.name ] = this.types[ type ] = 1;
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302 Hammer.prototype.unlisten = function( type ){
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303 var gestures = Detection.gestures,
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304 i = gestures.length, g;
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305 if( !this.activeGesture ) return;
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307 g = gestures[ --i ];
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308 if( g.startID <= type && type <= g.endID ){
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309 if( this.activeGesture[ g.name ] ){
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310 if( this.types[ type ] ) delete this.types[ type ];
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311 for( i = g.startID; i <= g.endID; ++i ){
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312 if( this.types[ i ] ) return;
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314 delete this.activeGesture[ g.name ];
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322 * "Android version < 2.2" return ev.touches.length === 1 when touchend, others return ev.touches.length === 0
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324 Hammer.DO_TOUCHES_FIX = Hammer.HAS_TOUCHEVENTS && X.UA.Android < 2.2;
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326 // detect touchevents
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327 Hammer.HAS_POINTEREVENTS = navigator.pointerEnabled || navigator.msPointerEnabled;
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329 // eventtypes per touchevent (start, move, end)
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330 // are filled by HamEvent.determineEventTypes on setup
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331 Hammer.EVENT_TYPES_START = null;
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333 // direction defines
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334 Hammer.DIRECTION_DOWN = 'down';
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335 Hammer.DIRECTION_LEFT = 'left';
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336 Hammer.DIRECTION_UP = 'up';
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337 Hammer.DIRECTION_RIGHT = 'right';
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339 // plugins namespace
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340 Hammer.plugins = {};
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350 EVENT_TYPE_MASK = START | MOVE | END,
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351 POINTER_TYPE_MASK = POINTER | TOUCH | MOUSE | PEN,
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352 IdToGestureID = {};
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353 IdToGestureID[ X.UI.Event._POINTER_DOWN ] = START;
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354 IdToGestureID[ X.UI.Event._POINTER_MOVE ] = MOVE;
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355 IdToGestureID[ X.UI.Event._POINTER_UP ] = END;
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356 IdToGestureID[ X.UI.Event._POINTER_CANCEL ] = END;
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358 IdToGestureID[ X.UI.Event._TOUCH_START ] = START;
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359 IdToGestureID[ X.UI.Event._TOUCH_MOVE ] = MOVE;
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360 IdToGestureID[ X.UI.Event._TOUCH_END ] = END;
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361 IdToGestureID[ X.UI.Event._TOUCH_CANCEL ] = END;
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363 IdToGestureID[ X.UI.Event._MOUSE_DOWN ] = START;
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364 IdToGestureID[ X.UI.Event._MOUSE_MOVE ] = MOVE;
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365 IdToGestureID[ X.UI.Event._MOUSE_UP ] = END;
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366 IdToGestureID[ X.UI.Event._MOUSE_CANCEL ] = END;
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371 * touch events with mouse fallback
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372 * @param {HTMLElement} element
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373 * @param {String} eventType like Hammer.EVENT_MOVE
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374 * @param {Function} handler
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376 addEvents : function( uinode, types, context ){
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377 for( var i = 0; i < types.length; ++i ){
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378 uinode.listen( types[ i ], context );
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384 * also used for cloning when dest is an empty object
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385 * @param {Object} dest
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386 * @param {Object} src
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387 * @parm {Boolean} merge do a merge
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388 * @returns {Object} dest
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390 extend : function extend( dest, src, merge ){
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391 for( var key in src ){
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392 if( dest[ key ] !== undefined && merge ) continue;
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393 dest[ key ] = src[ key ];
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399 * find if a node is in the given parent
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400 * used for event delegation tricks
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401 * @param {HTMLElement} node
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402 * @param {HTMLElement} parent
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403 * @returns {boolean} has_parent
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405 hasParent : function( node, parent ){
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406 while( node && node.tagName ){ /* tagName for ie */
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407 if( node === parent ) return true;
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408 node = node.parentNode;
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414 * get the center of all the touches
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415 * @param {Array} touches
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416 * @returns {Object} center
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418 getCenter : function getCenter(touches) {
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420 l = touches.length,
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427 pageX : touches[ 0 ].pageX,
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428 pageY : touches[ 0 ].pageY
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432 pageX : ( touches[ 0 ].pageX + touches[ 1 ].pageX ) / 2,
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433 pageY : ( touches[ 0 ].pageY + touches[ 1 ].pageY ) / 2
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438 for( ; i < l; ++i ){
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439 valuesX[ valuesX.length ] = touches[ i ].pageX;
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440 valuesY[ valuesY.length ] = touches[ i ].pageY;
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443 pageX : ( ( Math.min.apply( null, valuesX ) + Math.max.apply( null, valuesX ) ) / 2 ),
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444 pageY : ( ( Math.min.apply( null, valuesY ) + Math.max.apply( null, valuesY ) ) / 2 )
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449 * calculate the velocity between two points
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450 * @param {Number} deltaTime
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451 * @param {Number} deltaX
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452 * @param {Number} deltaY
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453 * @returns {Object} velocity
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455 getVelocity : function getVelocity( deltaTime, deltaX, deltaY ) {
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457 x : ABS( deltaX / deltaTime ) || 0,
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458 y : ABS( deltaY / deltaTime ) || 0
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463 * calculate the angle between two coordinates
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464 * @param {Touch} touch1
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465 * @param {Touch} touch2
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466 * @returns {Number} angle
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468 getAngle : function getAngle(touch1, touch2) {
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469 var y = touch2.pageY - touch1.pageY,
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470 x = touch2.pageX - touch1.pageX;
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471 return Math.atan2( y, x ) * 180 / Math.PI;
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475 * angle to direction define
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476 * @param {Touch} touch1
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477 * @param {Touch} touch2
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478 * @returns {String} direction constant, like Hammer.DIRECTION_LEFT
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480 getDirection : function getDirection( touch1, touch2 ){
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481 var x = touch1.pageX - touch2.pageX,
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482 y = touch1.pageY - touch2.pageY;
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483 return ABS( y ) <= ABS( x ) ?
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484 ( x > 0 ? Hammer.DIRECTION_LEFT : Hammer.DIRECTION_RIGHT ) :
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485 ( y > 0 ? Hammer.DIRECTION_UP : Hammer.DIRECTION_DOWN );
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489 * calculate the distance between two touches
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490 * @param {Touch} touch1
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491 * @param {Touch} touch2
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492 * @returns {Number} distance
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494 getDistance : function getDistance( touch1, touch2 ){
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495 var x = touch2.pageX - touch1.pageX,
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496 y = touch2.pageY - touch1.pageY;
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497 return Math.sqrt( ( x * x ) + ( y * y ) );
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501 * calculate the scale factor between two touchLists (fingers)
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502 * no scale is 1, and goes down to 0 when pinched together, and bigger when pinched out
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503 * @param {Array} start
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504 * @param {Array} end
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505 * @returns {Number} scale
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507 getScale : function getScale( start, end ){
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508 // need two fingers...
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509 return ( 2 <= start.length && 2 <= end.length ) ?
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510 Utils.getDistance( end[ 0 ], end[ 1 ] ) / Utils.getDistance( start[ 0 ], start[ 1 ] ) :
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515 * calculate the rotation degrees between two touchLists (fingers)
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516 * @param {Array} start
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517 * @param {Array} end
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518 * @returns {Number} rotation
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520 getRotation : function getRotation( start, end ){
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521 // need two fingers
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522 return ( 2 <= start.length && 2 <= end.length ) ?
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523 Utils.getAngle( end[ 1 ], end[ 0 ] ) - Utils.getAngle( start[ 1 ], start[ 0 ] ) :
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528 * boolean if the direction is vertical
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529 * @param {String} direction
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530 * @returns {Boolean} is_vertical
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532 isVertical : function isVertical( direction ){
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533 return direction === Hammer.DIRECTION_UP || direction === Hammer.DIRECTION_DOWN;
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538 * this holds the last move event,
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539 * used to fix empty touchend issue
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540 * see the onTouch event for an explanation
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543 var last_move_event = null;
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546 * when the mouse is hold down, this is true
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549 var enable_detect = false;
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552 * when touch events have been fired, this is true
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555 var touch_triggered = false;
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558 // contains all registred Gestures in the correct order
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561 // data of the current Hammer.gesture detection session
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564 // the previous Hammer.gesture session data
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565 // is a full clone of the previous gesture.current object
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568 // when this becomes true, no gestures are fired
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572 * clear the Hammer.gesture vars
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573 * this is called on endDetect, but can also be used when a final Hammer.gesture has been detected
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574 * to stop other Gestures from being fired
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576 stopDetect : function stopDetect() {
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577 // clone current data to the store as the previous gesture
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578 // used for the double tap gesture, since this is an other gesture detect session
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579 Detection.previous = Utils.extend( {}, Detection.current );
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581 // reset the current
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582 Detection.current = null;
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585 Detection.stopped = true;
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589 * register new gesture
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590 * @param {Object} gesture object, see gestures.js for documentation
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591 * @returns {Array} gestures
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593 register : function( gesture ){
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594 // add an enable gesture options if there is no given
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595 var options = gesture.defaults || {},
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596 list = Detection.gestures,
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597 _index, i = 0, l = list.length, index;
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598 if( options[ gesture.name ] === undefined ) options[ gesture.name ] = true;
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600 // extend Hammer default options with the Hammer.gesture options
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601 Utils.extend( Hammer.defaults, options, true );
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604 gesture.index = gesture.index || 1000;
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606 // add Hammer.gesture to the list
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607 //Detection.gestures.push( gesture );
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609 // sort the list by index
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610 //Detection.gestures.sort( function( a, b ){
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612 // a.index < b.index ? -1 :
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613 // a.index > b.index ? 1 : 0;
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616 list[ 0 ] = gesture;
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619 _index = gesture.index;
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620 for( i = 0; i < l; ++i ){
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621 index = list[ i ].index;
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622 if( i === 0 && _index < index ){
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623 list.unshift( gesture );
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627 list[ l ] = gesture;
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630 if( index <= _index && _index < list[ i + 1 ].index ){
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631 list.splice( i, 0, gesture );
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638 var Gestures = Gestures || {};
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642 * ==============================
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645 * --------------------
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646 * The object structure of a gesture:
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648 * { name: 'mygesture',
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651 * mygesture_option: true
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653 * handler: function(type, e, inst) {
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654 * // trigger gesture event
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655 * inst.trigger(this.name, e );
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659 * @param {String} name
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660 * this should be the name of the gesture, lowercase
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661 * it is also being used to disable/enable the gesture per instance config.
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663 * @param {Number} [index=1000]
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664 * the index of the gesture, where it is going to be in the stack of gestures detection
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665 * like when you build an gesture that depends on the drag gesture, it is a good
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666 * idea to place it after the index of the drag gesture.
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668 * @param {Object} [defaults={}]
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669 * the default settings of the gesture. these are added to the instance settings,
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670 * and can be overruled per instance. you can also add the name of the gesture,
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671 * but this is also added by default (and set to true).
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673 * @param {Function} handler
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674 * this handles the gesture detection of your custom gesture and receives the
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675 * following arguments:
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677 * @param {Object} eventData
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678 * event data containing the following properties:
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679 * timeStamp {Number} time the event occurred
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680 * target {HTMLElement} target element
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681 * touches {Array} touches (fingers, pointers, mouse) on the screen
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682 * pointerType {String} kind of pointer that was used. matches Hammer.POINTER_MOUSE|TOUCH
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683 * center {Object} center position of the touches. contains pageX and pageY
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684 * deltaTime {Number} the total time of the touches in the screen
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685 * deltaX {Number} the delta on x axis we haved moved
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686 * deltaY {Number} the delta on y axis we haved moved
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687 * velocityX {Number} the velocity on the x
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688 * velocityY {Number} the velocity on y
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689 * angle {Number} the angle we are moving
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690 * direction {String} the direction we are moving. matches Hammer.DIRECTION_UP|DOWN|LEFT|RIGHT
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691 * distance {Number} the distance we haved moved
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692 * scale {Number} scaling of the touches, needs 2 touches
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693 * rotation {Number} rotation of the touches, needs 2 touches *
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694 * eventType {String} matches Hammer.EVENT_START|MOVE|END
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695 * srcEvent {Object} the source event, like TouchStart or MouseDown *
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696 * startEvent {Object} contains the same properties as above,
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697 * but from the first touch. this is used to calculate
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698 * distances, deltaTime, scaling etc
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700 * @param {Hammer.Instance} inst
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701 * the instance we are doing the detection for. you can get the options from
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702 * the inst.options object and trigger the gesture event by calling inst.trigger
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706 * --------------------
\r
707 * inside the handler you can get/set Detection.current. This is the current
\r
708 * detection session. It has the following properties
\r
709 * @param {String} name
\r
710 * contains the name of the gesture we have detected. it has not a real function,
\r
711 * only to check in other gestures if something is detected.
\r
712 * like in the drag gesture we set it to 'drag' and in the swipe gesture we can
\r
713 * check if the current gesture is 'drag' by accessing Detection.current.name
\r
716 * @param {Hammer.Instance} inst
\r
717 * the instance we do the detection for
\r
720 * @param {Object} startEvent
\r
721 * contains the properties of the first gesture detection in this session.
\r
722 * Used for calculations about timing, distance, etc.
\r
725 * @param {Object} lastEvent
\r
726 * contains all the properties of the last gesture detect in this session.
\r
728 * after the gesture detection session has been completed (user has released the screen)
\r
729 * the Detection.current object is copied into Detection.previous,
\r
730 * this is usefull for gestures like doubletap, where you need to know if the
\r
731 * previous gesture was a tap
\r
733 * options that have been set by the instance can be received by calling inst.options
\r
735 * You can trigger a gesture event by calling inst.trigger("mygesture", event).
\r
736 * The first param is the name of your gesture, the second the event argument
\r
739 * Register gestures
\r
740 * --------------------
\r
741 * When an gesture is added to the Gestures object, it is auto registered
\r
742 * at the setup of the first Hammer instance. You can also call Detection.register
\r
743 * manually and pass your gesture object as a param
\r
749 * Touch stays at the same place for x time
\r
750 * @events hold holdend
\r
755 startID : X.UI.Event.HOLD,
\r
756 endID : X.UI.Event.HOLD_END,
\r
758 hold_timeout : 500,
\r
763 handler : function holdGesture( e, hammer ){
\r
764 switch( e.eventType ){
\r
766 // clear any running timers
\r
767 this.timerID && X.Timer.remove( this.timerID );
\r
769 // set the gesture so we can check in the timeout if it still is
\r
770 Detection.current.name = this.name;
\r
771 Gestures.Hold.holding = false;
\r
773 // set timer and if after the timeout it still is hold,
\r
774 // we trigger the hold event
\r
775 this.timerID = X.Timer.add( hammer.options.hold_timeout, 1, Gestures.Hold._onTimer, [ e, hammer ] );
\r
778 // when you move or end we clear the timer
\r
780 if( e.distance <= hammer.options.hold_threshold ) return;
\r
782 this.timerID && X.Timer.remove( this.timerID );
\r
783 if( Gestures.Hold.holding === true ){
\r
784 Gestures.Hold.holding = false;
\r
785 return hammer.trigger( X.UI.Event.HOLD_END, e );
\r
790 _onTimer : function( e, hammer ){
\r
791 if( Detection.current.name === 'hold' ){
\r
792 hammer.trigger( X.UI.Event.HOLD, e );
\r
793 Gestures.Hold.holding = true;
\r
800 * Quick touch at a place or double at the same place
\r
801 * @events tap, doubletap
\r
806 startID : X.UI.Event.TAP,
\r
807 endID : X.UI.Event.DOUBLE_TAP,
\r
809 tap_max_touchtime : 250,
\r
810 tap_max_distance : 10,
\r
812 doubletap_distance : 20,
\r
813 doubletap_interval : 300
\r
815 handler : function tapGesture( e, hammer ){
\r
816 // previous gesture, for the double tap since these are two different gesture detections
\r
817 var prev = Detection.previous;
\r
818 if( e.eventType === END ){
\r
819 // when the touchtime is higher then the max touch time
\r
820 // or when the moving distance is too much
\r
821 if( hammer.options.tap_max_touchtime < e.deltaTime || hammer.options.tap_max_distance < e.distance ) return;
\r
823 // check if double tap
\r
824 if( prev && prev.name === 'tap' && ( e.timeStamp - prev.lastEvent.timeStamp ) < hammer.options.doubletap_interval && e.distance < hammer.options.doubletap_distance ){
\r
825 return hammer.trigger( X.UI.Event.DOUBLE_TAP, e );
\r
828 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
829 Detection.current.name = 'tap';
\r
830 return hammer.trigger( X.UI.Event.TAP, e );
\r
838 * triggers swipe events when the end velocity is above the threshold
\r
839 * @events swipe, swipeleft, swiperight, swipeup, swipedown
\r
844 startID : X.UI.Event.SWIP,
\r
845 endID : X.UI.Event.SWIP_DOWN,
\r
847 // set 0 for unlimited, but this can conflict with transform
\r
848 swipe_max_touches : 1,
\r
849 swipe_velocity : 0.7
\r
851 handler : function swipeGesture(e, hammer) {
\r
852 if( e.eventType === END ){
\r
854 if( 0 < hammer.options.swipe_max_touches && hammer.options.swipe_max_touches < e.touches.length ) return;
\r
856 // when the distance we moved is too small we skip this gesture
\r
857 // or we can be already in dragging
\r
858 if( hammer.options.swipe_velocity < e.velocityX || hammer.options.swipe_velocity < e.velocityY ){
\r
859 // trigger swipe events
\r
860 hammer.trigger( X.UI.Event.SWIP, e );
\r
862 e.direction === Hammer.DIRECTION_UP ?
\r
863 X.UI.Event.SWIP_UP :
\r
864 e.direction === Hammer.DIRECTION_DOWN ?
\r
865 X.UI.Event.SWIP_DOWN :
\r
866 e.direction === Hammer.DIRECTION_LEFT ?
\r
867 X.UI.Event.SWIP_LEFT :
\r
868 X.UI.Event.SWIP_RIGHT,
\r
878 * Move with x fingers (default 1) around on the page. Blocking the scrolling when
\r
879 * moving left and right is a good practice. When all the drag events are blocking
\r
880 * you disable scrolling on that area.
\r
881 * @events drag, dragstart, dragend, drapleft, dragright, dragup, dragdown
\r
886 startID : X.UI.Event.DRAG,
\r
887 endID : X.UI.Event.DRAG_DOWN,
\r
889 drag_min_distance : 10,
\r
890 // set 0 for unlimited, but this can conflict with transform
\r
891 drag_max_touches : 1,
\r
892 // prevent default browser behavior when dragging occurs
\r
893 // be careful with it, it makes the element a blocking element
\r
894 // when you are using the drag gesture, it is a good practice to set this true
\r
895 drag_block_horizontal : false,
\r
896 drag_block_vertical : false,
\r
897 // drag_lock_to_axis keeps the drag gesture on the axis that it started on,
\r
898 // It disallows vertical directions if the initial direction was horizontal, and vice versa.
\r
899 drag_lock_to_axis : false,
\r
900 // drag lock only kicks in when distance > drag_lock_min_distance
\r
901 // This way, locking occurs only when the distance has become large enough to reliably determine the direction
\r
902 drag_lock_min_distance : 25
\r
905 handler : function dragGesture( e, hammer ){
\r
906 var last_direction;
\r
907 // current gesture isnt drag, but dragged is true
\r
908 // this means an other gesture is busy. now call dragend
\r
909 if( Detection.current.name !== this.name && this.triggered ){
\r
910 hammer.trigger( X.UI.Event.DRAG_END, e );
\r
911 this.triggered = false;
\r
916 if( 0 < hammer.options.drag_max_touches && hammer.options.drag_max_touches < e.touches.length ) return;
\r
918 switch( e.eventType ){
\r
920 this.triggered = false;
\r
924 // when the distance we moved is too small we skip this gesture
\r
925 // or we can be already in dragging
\r
926 if( e.distance < hammer.options.drag_min_distance && Detection.current.name !== this.name ) return;
\r
928 // we are dragging!
\r
929 Detection.current.name = this.name;
\r
931 // lock drag to axis?
\r
932 if( Detection.current.lastEvent.drag_locked_to_axis || ( hammer.options.drag_lock_to_axis && hammer.options.drag_lock_min_distance <= e.distance ) ){
\r
933 e.drag_locked_to_axis = true;
\r
935 last_direction = Detection.current.lastEvent.direction;
\r
936 if( e.drag_locked_to_axis && last_direction !== e.direction ){
\r
937 // keep direction on the axis that the drag gesture started on
\r
938 e.direction = Utils.isVertical( last_direction ) ?
\r
939 ( e.deltaY < 0 ? Hammer.DIRECTION_UP : Hammer.DIRECTION_DOWN ) :
\r
940 ( e.deltaX < 0 ? Hammer.DIRECTION_LEFT : Hammer.DIRECTION_RIGHT );
\r
943 // first time, trigger dragstart event
\r
944 if( !this.triggered ){
\r
945 hammer.trigger( X.UI.Event.DRAG_START, e );
\r
946 this.triggered = true;
\r
949 // trigger normal event
\r
950 hammer.trigger( X.UI.Event.DRAG, e );
\r
952 // direction event, like dragdown
\r
954 e.direction === Hammer.DIRECTION_UP ?
\r
955 X.UI.Event.DRAG_UP :
\r
956 e.direction === Hammer.DIRECTION_DOWN ?
\r
957 X.UI.Event.DRAG_DOWN :
\r
958 e.direction === Hammer.DIRECTION_LEFT ?
\r
959 X.UI.Event.DRAG_LEFT :
\r
960 X.UI.Event.DRAG_RIGHT,
\r
964 // block the browser events
\r
966 ( hammer.options.drag_block_vertical && Utils.isVertical( e.direction ) ) ||
\r
967 ( hammer.options.drag_block_horizontal && !Utils.isVertical( e.direction ) )
\r
968 ) && e.preventDefault();
\r
973 this.triggered && hammer.trigger( X.UI.Event.DRAG_END, e );
\r
974 this.triggered = false;
\r
982 * User want to scale or rotate with 2 fingers
\r
983 * @events transform, transformstart, transformend, pinch, pinchin, pinchout, rotate
\r
985 Gestures.Transform = {
\r
986 name : 'transform',
\r
988 startID : X.UI.Event.TRANSFORM,
\r
989 endID : X.UI.Event.ROTATE,
\r
991 // factor, no scale is 1, zoomin is to 0 and zoomout until higher then 1
\r
992 transform_min_scale : 0.01,
\r
993 // rotation in degrees
\r
994 transform_min_rotation : 1,
\r
995 // prevent default browser behavior when two touches are on the screen
\r
996 // but it makes the element a blocking element
\r
997 // when you are using the transform gesture, it is a good practice to set this true
\r
998 transform_always_block : false
\r
1000 triggered : false,
\r
1001 handler : function transformGesture( e, hammer ){
\r
1002 // current gesture isnt drag, but dragged is true
\r
1003 // this means an other gesture is busy. now call dragend
\r
1004 if( Detection.current.name !== this.name && this.triggered ){
\r
1005 hammer.trigger( X.UI.Event.TRANSFORM_END, e );
\r
1006 this.triggered = false;
\r
1010 // atleast multitouch
\r
1011 if( e.touches.length < 2 ) return;
\r
1013 // prevent default when two fingers are on the screen
\r
1014 hammer.options.transform_always_block && e.preventDefault();
\r
1016 switch(e.eventType) {
\r
1018 this.triggered = false;
\r
1022 var scale_threshold = ABS( 1 - e.scale ),
\r
1023 rotation_threshold = ABS( e.rotation );
\r
1025 // when the distance we moved is too small we skip this gesture
\r
1026 // or we can be already in dragging
\r
1027 if( scale_threshold < hammer.options.transform_min_scale && rotation_threshold < hammer.options.transform_min_rotation ) return;
\r
1029 // we are transforming!
\r
1030 Detection.current.name = this.name;
\r
1032 // first time, trigger dragstart event
\r
1033 if( !this.triggered ){
\r
1034 hammer.trigger( X.UI.Event.TRANSFORM_START, e );
\r
1035 this.triggered = true;
\r
1038 hammer.trigger( X.UI.Event.TRANSFORM, e );
\r
1039 // basic transform event
\r
1041 // trigger rotate event
\r
1042 hammer.options.transform_min_rotation < rotation_threshold && hammer.trigger( X.UI.Event.ROTATE, e );
\r
1044 // trigger pinch event
\r
1045 if( scale_threshold > hammer.options.transform_min_scale ){
\r
1046 hammer.trigger( X.UI.Event.PINCH, e );
\r
1047 hammer.trigger( e.scale < 1 ? X.UI.Event.PINCH_IN : X.UI.Event.PINCH_OUT, e );
\r
1052 // trigger dragend
\r
1053 this.triggered && hammer.trigger( X.UI.Event.TRANSFORM_END, e );
\r
1054 this.triggered = false;
\r
1062 * Called as first, tells the user has touched the screen
\r
1065 Gestures.Touch = {
\r
1067 index : -Infinity,
\r
1069 // call preventDefault at touchstart, and makes the element blocking by
\r
1070 // disabling the scrolling of the page, but it improves gestures like
\r
1071 // transforming and dragging.
\r
1072 // be careful with using this, it can be very annoying for users to be stuck
\r
1074 prevent_default : false,
\r
1076 // disable mouse events, so only touch (or pen!) input triggers events
\r
1077 prevent_mouseevents : false
\r
1079 handler : function touchGesture( e, hammer ){
\r
1080 if( hammer.options.prevent_mouseevents && e.pointerType === MOUSE ){
\r
1081 Detection.stopDetect();
\r
1085 hammer.options.prevent_default && e.preventDefault();
\r
1087 e.eventType === START && hammer.trigger( this.name, e );
\r
1093 * Called as last, tells the user has released the screen
\r
1096 Gestures.Release = {
\r
1099 handler : function releaseGesture( e, hammer ){
\r
1100 e.eventType === END && hammer.trigger( this.name, e );
\r
1104 })( Math, window, document );