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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: "../../../assets/qmlvideofx/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
             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) / grip.parent.width
             }