SwipeArea.qml Example File

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 import QtQuick 2.0

 MouseArea {
     id: mouseSwipeArea
     preventStealing: true

     property real prevX: 0
     property real prevY: 0
     property real velocityX: 0.0
     property real velocityY: 0.0
     property int startX: 0
     property int startY: 0
     property bool tracing: false

     signal swipeLeft()
     signal swipeRight()
     signal swipeUp()
     signal swipeDown()

     onPressed: {
         startX = mouse.x
         startY = mouse.y
         prevX = mouse.x
         prevY = mouse.y
         velocityX = 0
         velocityY = 0
         tracing = true
     }

     onPositionChanged: {
         if ( !tracing ) return
         var currVelX = (mouse.x-prevX)
         var currVelY = (mouse.y-prevY)

         velocityX = (velocityX + currVelX)/2.0;
         velocityY = (velocityY + currVelY)/2.0;

         prevX = mouse.x
         prevY = mouse.y

         if ( velocityX > 15 && mouse.x > mouseSwipeArea.width * 0.25 ) {
             tracing = false
             // Swipe Right
             mouseSwipeArea.swipeRight()
         } else if ( velocityX < -15 && mouse.x < mouseSwipeArea.width * 0.75 ) {
             tracing = false
             // Swipe Left
             mouseSwipeArea.swipeLeft()
         } else if (velocityY > 15 && mouse.y > mouseSwipeArea.height * 0.25 ) {
             tracing = false
             // Swipe Down
             mouseSwipeArea.swipeDown()
         } else if ( velocityY < -15 && mouse.y < mouseSwipeArea.height * 0.75 ) {
             tracing = false
             // Swipe Up
             mouseSwipeArea.swipeUp()
         }
     }
 }