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 import QtQuick 2.1

 Rectangle {
     id: root
     property alias effect: effectLoader.item
     property alias gripSize: divider.gripSize
     property string effectSource
     property real volume: 0.5

     Divider {
         id: divider
         visible: false
         z: 1.0
         onValueChanged: updateDivider()
     }

     ShaderEffectSource {
         id: theSource
         smooth: true
         hideSource: true
     }

     Loader {
         id: contentLoader
     }

     Loader {
         id: effectLoader
         source: effectSource
     }

     onWidthChanged: {
         if (effectLoader.item)
             effectLoader.item.targetWidth = root.width
     }

     onHeightChanged: {
         if (effectLoader.item)
             effectLoader.item.targetHeight = root.height
     }

     onEffectSourceChanged: {
         effectLoader.source = effectSource
         effectLoader.item.parent = root
         effectLoader.item.targetWidth = root.width
         effectLoader.item.targetHeight = root.height
         updateSource()
         effectLoader.item.source = theSource
         divider.visible = effectLoader.item.divider
         updateDivider()
     }

     function init() {
         openImage("../../../assets/felgo-logo.png")
         root.effectSource = "EffectPassThrough.qml"
     }

     function updateDivider() {
         if (effectLoader.item && effectLoader.item.divider)
             effectLoader.item.dividerValue = divider.value
     }

     function updateSource() {
         if (contentLoader.item) {
             contentLoader.item.parent = root
             contentLoader.item.anchors.fill = root
             theSource.sourceItem = contentLoader.item
             if (effectLoader.item)
                 effectLoader.item.anchors.fill = contentLoader.item
         }
     }

     function openImage(path) {
         stop()
         contentLoader.source = "ContentImage.qml"
         contentLoader.item.source = path
         updateSource()
     }

     function openVideo(path) {
         stop()
         contentLoader.source = "ContentVideo.qml"
         contentLoader.item.mediaSource = path
         contentLoader.item.volume = volume
         contentLoader.item.play()
         updateSource()
     }

     function openCamera() {
         stop()
         contentLoader.source = "ContentCamera.qml"
         updateSource()
     }

     function stop() {
         if (contentLoader.source == "ContentVideo.qml")
             contentLoader.item.stop()