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Component Showcase Demo App

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 import QtQuick 2.1

 Rectangle {
     id: root
     color: "transparent"
     radius: dp(6)
     property alias value: grip.value
     property color fillColor: "#14aaff"
     property real gripSize: 40
     property real increment: 0.1
     property bool enabled: true

     Rectangle {
         id: slider
         anchors {
             left: parent.left
             right: parent.right
             verticalCenter: parent.verticalCenter
         }
         height: dp(10)
         color: "transparent"

         BorderImage {
            id: sliderbarimage
            source: "../../../assets/qmlvideofx/Slider_bar.png"
            anchors { fill: parent; margins: 1 }
            border.right: 5
            border.left: 5
         }
         Rectangle {
             height: parent.height - dp(2)
             anchors.left: parent.left
             anchors.right: grip.horizontalCenter
             color: root.fillColor
             radius: dp(6)
             border.width: 1
             border.color: Qt.darker(color, 1.3)
             opacity: 0.8
         }
         Rectangle {
             id: grip
             property real value: 0.5
             x: (value * parent.width) - width/2
             anchors.verticalCenter: parent.verticalCenter
             width: Math.max(dp(48), root.gripSize)
             height: width
             radius: width/2
             color: "transparent"

             Image {
                 id: sliderhandleimage
                 source: "../../../assets/qmlvideofx/Slider_handle.png"
                 anchors.centerIn: parent
                 width: root.gripSize
                 height: width / sourceSize.width * sourceSize.height
             }

             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) / slider.width
                 }
             }
         }