Progress.qml Example File

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 import QtQuick 1.0

 Item {
     property variant progress: 0

     Rectangle {
         anchors.fill: parent; smooth: true
         border.color: "white"; border.width: 0; radius: height/2 - 2
         gradient: Gradient {
             GradientStop { position: 0; color: "#66343434" }
             GradientStop { position: 1.0; color: "#66000000" }
         }
     }

     Rectangle {
         y: 2; height: parent.height-4;
         x: 2; width: Math.max(parent.width * progress - 4, 0);
         opacity: width < 1 ? 0 : 1; smooth: true
         gradient: Gradient {
             GradientStop { position: 0; color: "lightsteelblue" }
             GradientStop { position: 1.0; color: "steelblue" }
         }
         radius: height/2 - 2
     }

     Text {
         text: Math.round(progress * 100) + "%"
         anchors.horizontalCenter: parent.horizontalCenter
         anchors.verticalCenter: parent.verticalCenter
         color: "white"; font.bold: true; font.pixelSize: 15
     }
 }