Qt 5.7 | Qt Quick | Qt Quick Examples - Animation | color-animation.qml Example File

Qt 5.7.1 Reference Documentation

# color-animation.qml Example File

animation/basics/color-animation.qml

      /****************************************************************************
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      ** This file is part of the examples of the Qt Toolkit.
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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" }
              }
          }
      }