SceneOverlay.qml Example File

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  import QtQuick 2.0

  Scene {
      id: root
      property int margin: 20
      property string contentType

      Content {
          id: content
          anchors.centerIn: parent
          width: parent.contentWidth
          contentType: root.contentType
          source: parent.source1
          volume: parent.volume
          onVideoFramePainted: root.videoFramePainted()
      }

      Rectangle {
          id: overlay
          y: 0.5 * parent.height
          width: content.width
          height: content.height
          color: "#e0e0e0"
          opacity: 0.5

          SequentialAnimation on x {
              id: xAnimation
              loops: Animation.Infinite
              property int from: margin
              property int to: 100
              property int duration: 1500
              running: false
              PropertyAnimation {
                  from: xAnimation.from
                  to: xAnimation.to
                  duration: xAnimation.duration
                  easing.type: Easing.InOutCubic
              }
              PropertyAnimation {
                  from: xAnimation.to
                  to: xAnimation.from
                  duration: xAnimation.duration
                  easing.type: Easing.InOutCubic
              }
          }

          SequentialAnimation on y {
              id: yAnimation
              loops: Animation.Infinite
              property int from: margin
              property int to: 180
              property int duration: 1500
              running: false
              PropertyAnimation {
                  from: yAnimation.from
                  to: yAnimation.to
                  duration: yAnimation.duration
                  easing.type: Easing.InOutCubic
              }
              PropertyAnimation {
                  from: yAnimation.to
                  to: yAnimation.from
                  duration: yAnimation.duration
                  easing.type: Easing.InOutCubic
              }
          }
      }

      onWidthChanged: {
          xAnimation.to = root.width - content.width - margin
          xAnimation.start()
      }

      onHeightChanged: {
          //yAnimation.to = root.height - content.height - margin
          yAnimation.start()
      }

      Component.onCompleted: root.content = content
  }