SceneRotate.qml Example File

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 import QtQuick 2.0

 Scene {
     id: root
     property int margin: 20
     property int delta: 30
     property string contentType

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

     Button {
         id: rotatePositiveButton
         anchors {
             right: parent.right
             bottom: rotateNegativeButton.top
             margins: parent.margins
         }
         width: 90
         height: root.buttonHeight
         text: "Rotate +" + delta
         onClicked: content.rotation = content.rotation + delta
     }

     Button {
         id: rotateNegativeButton
         anchors {
             right: parent.right
             verticalCenter: parent.verticalCenter
             margins: parent.margins
         }
         width: 90
         height: root.buttonHeight
         text: "Rotate -" + delta
         onClicked: content.rotation = content.rotation - delta
     }

     Button {
         id: rotateValueButton
         anchors {
             left: parent.left
             verticalCenter: parent.verticalCenter
             margins: parent.margins
         }
         width: 30
         height: root.buttonHeight
         enabled: false
         text: content.rotation % 360
     }

     Component.onCompleted: root.content = content
 }