Qt 5.6 | Qt Multimedia | QML Video Shader Effects Example | Curtain.qml Example File

Qt 5.6.3 Reference Documentation

# Curtain.qml Example File

multimedia/video/qmlvideofx/qml/qmlvideofx/Curtain.qml

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      import QtQuick 2.0

      Rectangle {
          id: root
          color: "transparent"
          radius: 5
          property alias value: grip.value
          property color gripColor: "transparent"
          property real gripSize: 20
          property real gripTolerance: 3.0
          property real increment: 0.1
          property bool enabled: true
          property string imageSource: "qrc:/images/Triangle_Top.png"

          Rectangle {
              id: grip
              property real value: 0.5
              x: (value * parent.width) - width/2
              anchors.verticalCenter: parent.verticalCenter
              width: root.gripTolerance * root.gripSize
              height: width
              radius: width/2
              color: "transparent"

              Image {
                  id: sliderhandleimage
                  source: imageSource
                  anchors.centerIn: parent
              }

              MouseArea {
                  id: mouseArea
                  enabled: root.enabled
                  anchors.fill:  parent
                  drag {
                      target: grip
                      axis: Drag.XAxis
                      minimumX: -parent.width/2
                      maximumX: root.width - parent.width/2
                  }
                  onPositionChanged:  {
                      if (drag.active)
                          updatePosition()
                  }
                  onReleased: {
                      updatePosition()
                  }
                  function updatePosition() {
                      value = (grip.x + grip.width/2) / grip.parent.width
                  }
              }
          }
      }