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()
          }
      }
  }