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Maximum tap distance for multi-tap TapGesture

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Thanks to Ilya Shabanov for a issue report
This commit is contained in:
Pavel fljot 2013-06-17 18:00:02 +03:00
parent 8d5e338715
commit 75672ee10e
1 changed files with 33 additions and 0 deletions
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33
src/org/gestouch/gestures/TapGesture.as
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@ -1,5 +1,6 @@
package org.gestouch.gestures
{
import flash.geom.Point;
import org.gestouch.core.gestouch_internal;
import org.gestouch.core.GestureState;
import org.gestouch.core.Touch;
@ -21,10 +22,12 @@ package org.gestouch.gestures
public var slop:Number = Gesture.DEFAULT_SLOP << 2;//iOS has 45px for 132 dpi screen
public var maxTapDelay:uint = 400;
public var maxTapDuration:uint = 1500;
public var maxTapDistance:Number = Gesture.DEFAULT_SLOP << 2;
protected var _timer:Timer;
protected var _numTouchesRequiredReached:Boolean;
protected var _tapCounter:uint = 0;
protected var _touchBeginLocations:Vector.<Point> = new Vector.<Point>();
public function TapGesture(target:Object = null)
@ -52,6 +55,7 @@ package org.gestouch.gestures
_numTouchesRequiredReached = false;
_tapCounter = 0;
_timer.reset();
_touchBeginLocations.length = 0;
super.reset();
}
@ -100,6 +104,35 @@ package org.gestouch.gestures
_timer.start();
}
if (numTapsRequired > 1)
{
if (_tapCounter == 0)
{
// Save touch begin locations to check
_touchBeginLocations.push(touch.location);
}
else
{
// Quite a dirty check, but should work in most cases
var found:Boolean = false;
for each (var loc:Point in _touchBeginLocations)
{
// current touch should be near any previous one
if (Point.distance(touch.location, loc) <= maxTapDistance)
{
found = true;
break;
}
}
if (!found)
{
setState(GestureState.FAILED);
return;
}
}
}
if (touchesCount == numTouchesRequired)
{
_numTouchesRequiredReached = true;