color-animation.qml Example File

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  import QtQuick 2.0
  import QtQuick.Particles 2.0

  Item {
      id: window
      width: 320; height: 480

      // Let's draw the sky...
      Rectangle {
          anchors { left: parent.left; top: parent.top; right: parent.right; bottom: parent.verticalCenter }
          gradient: Gradient {
              GradientStop {
                  position: 0.0
                  SequentialAnimation on color {
                      loops: Animation.Infinite
                      ColorAnimation { from: "#14148c"; to: "#0E1533"; duration: 5000 }
                      ColorAnimation { from: "#0E1533"; to: "#14148c"; duration: 5000 }
                  }
              }
              GradientStop {
                  position: 1.0
                  SequentialAnimation on color {
                      loops: Animation.Infinite
                      ColorAnimation { from: "#14aaff"; to: "#437284"; duration: 5000 }
                      ColorAnimation { from: "#437284"; to: "#14aaff"; duration: 5000 }
                  }
              }
          }
      }

      // the sun, moon, and stars
      Item {
          width: parent.width; height: 2 * parent.height
          NumberAnimation on rotation { from: 0; to: 360; duration: 10000; loops: Animation.Infinite }
          Image {
              source: "images/sun.png"; y: 10; anchors.horizontalCenter: parent.horizontalCenter
              rotation: -3 * parent.rotation
          }
          Image {
              source: "images/moon.png"; y: parent.height - 74; anchors.horizontalCenter: parent.horizontalCenter
              rotation: -parent.rotation
          }
          ParticleSystem {
              id: particlesystem
              x: 0; y: parent.height/2
              width: parent.width; height: parent.height/2
              ImageParticle {
                  source: "images/star.png"
                  groups: ["star"]
                  color: "#00333333"
                  SequentialAnimation on opacity {
                      loops: Animation.Infinite
                      NumberAnimation { from: 0; to: 1; duration: 5000 }
                      NumberAnimation { from: 1; to: 0; duration: 5000 }
                  }
              }
              Emitter {
                  group: "star"
                  anchors.fill: parent
                  emitRate: parent.width / 50
                  lifeSpan: 5000
              }
          }
      }

      // ...and the ground.
      Rectangle {
          anchors { left: parent.left; top: parent.verticalCenter; right: parent.right; bottom: parent.bottom }
          gradient: Gradient {
              GradientStop {
                  position: 0.0
                  SequentialAnimation on color {
                      loops: Animation.Infinite
                      ColorAnimation { from: "#80c342"; to: "#001600"; duration: 5000 }
                      ColorAnimation { from: "#001600"; to: "#80c342"; duration: 5000 }
                  }
              }
              GradientStop { position: 1.0; color: "#006325" }
          }
      }
  }