Progress.qml Example File

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  import QtQuick 2.0

  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
      }
  }