SwipeArea.qml Example File | Qt Canvas 3D (deprecated) 5.12.10

- Qt 5.12
- Qt Canvas 3D (deprecated)
- One Qt Example
- SwipeArea.qml Example File
- Qt 5.12.10 Reference Documentation

# SwipeArea.qml Example File

threejs/oneqt/SwipeArea.qml

     /****************************************************************************
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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()
             }
         }
     }