Qt 5.11Qt Quick ExtrasQt Quick Extras - DashboardValueSource.qml Example File
Qt 5.11.1 Reference Documentation

ValueSource.qml Example File

dashboard/qml/ValueSource.qml 

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  ** This file is part of the examples of the Qt Toolkit.
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  import QtQuick 2.2
  Item {
      id: valueSource
      property real kph: 0
      property real rpm: 1
      property real fuel: 0.85
      property string gear: {
          var g;
          if (kph == 0) {
              return "P";
          }
          if (kph < 30) {
              return "1";
          }
          if (kph < 50) {
              return "2";
          }
          if (kph < 80) {
              return "3";
          }
          if (kph < 120) {
              return "4";
          }
          if (kph < 160) {
              return "5";
          }
      }
      property int turnSignal: gear == "P" && !start ? randomDirection() : -1
      property real temperature: 0.6
      property bool start: true

      function randomDirection() {
          return Math.random() > 0.5 ? Qt.LeftArrow : Qt.RightArrow;
      }

      SequentialAnimation {
          running: true
          loops: 1

          // We want a small pause at the beginning, but we only want it to happen once.
          PauseAnimation {
              duration: 1000
          }

          PropertyAction {
              target: valueSource
              property: "start"
              value: false
          }

          SequentialAnimation {
              loops: Animation.Infinite
              ParallelAnimation {
                  NumberAnimation {
                      target: valueSource
                      property: "kph"
                      easing.type: Easing.InOutSine
                      from: 0
                      to: 30
                      duration: 3000
                  }
                  NumberAnimation {
                      target: valueSource
                      property: "rpm"
                      easing.type: Easing.InOutSine
                      from: 1
                      to: 6.1
                      duration: 3000
                  }
              }
              ParallelAnimation {
                  // We changed gears so we lost a bit of speed.
                  NumberAnimation {
                      target: valueSource
                      property: "kph"
                      easing.type: Easing.InOutSine
                      from: 30
                      to: 26
                      duration: 600
                  }
                  NumberAnimation {
                      target: valueSource
                      property: "rpm"
                      easing.type: Easing.InOutSine
                      from: 6
                      to: 2.4
                      duration: 600
                  }
              }
              ParallelAnimation {
                  NumberAnimation {
                      target: valueSource
                      property: "kph"
                      easing.type: Easing.InOutSine
                      to: 60
                      duration: 3000
                  }
                  NumberAnimation {
                      target: valueSource
                      property: "rpm"
                      easing.type: Easing.InOutSine
                      to: 5.6
                      duration: 3000
                  }
              }
              ParallelAnimation {
                  // We changed gears so we lost a bit of speed.
                  NumberAnimation {
                      target: valueSource
                      property: "kph"
                      easing.type: Easing.InOutSine
                      to: 56
                      duration: 600
                  }
                  NumberAnimation {
                      target: valueSource
                      property: "rpm"
                      easing.type: Easing.InOutSine
                      to: 2.3
                      duration: 600
                  }
              }
              ParallelAnimation {
                  NumberAnimation {
                      target: valueSource
                      property: "kph"
                      easing.type: Easing.InOutSine
                      to: 100
                      duration: 3000
                  }
                  NumberAnimation {
                      target: valueSource
                      property: "rpm"
                      easing.type: Easing.InOutSine
                      to: 5.1
                      duration: 3000
                  }
              }
              ParallelAnimation {
                  // We changed gears so we lost a bit of speed.
                  NumberAnimation {
                      target: valueSource
                      property: "kph"
                      easing.type: Easing.InOutSine
                      to: 96
                      duration: 600
                  }
                  NumberAnimation {
                      target: valueSource
                      property: "rpm"
                      easing.type: Easing.InOutSine
                      to: 2.2
                      duration: 600
                  }
              }

              ParallelAnimation {
                  NumberAnimation {
                      target: valueSource
                      property: "kph"
                      easing.type: Easing.InOutSine
                      to: 140
                      duration: 3000
                  }
                  NumberAnimation {
                      target: valueSource
                      property: "rpm"
                      easing.type: Easing.InOutSine
                      to: 6.2
                      duration: 3000
                  }
              }

              // Start downshifting.

              // Fifth to fourth gear.
              ParallelAnimation {
                  NumberAnimation {
                      target: valueSource
                      property: "kph"
                      easing.type: Easing.Linear
                      to: 100
                      duration: 5000
                  }

                  NumberAnimation {
                      target: valueSource
                      property: "rpm"
                      easing.type: Easing.InOutSine
                      to: 3.1
                      duration: 5000
                  }
              }

              // Fourth to third gear.
              NumberAnimation {
                  target: valueSource
                  property: "rpm"
                  easing.type: Easing.InOutSine
                  to: 5.5
                  duration: 600
              }

              ParallelAnimation {
                  NumberAnimation {
                      target: valueSource
                      property: "kph"
                      easing.type: Easing.InOutSine
                      to: 60
                      duration: 5000
                  }
                  NumberAnimation {
                      target: valueSource
                      property: "rpm"
                      easing.type: Easing.InOutSine
                      to: 2.6
                      duration: 5000
                  }
              }

              // Third to second gear.
              NumberAnimation {
                  target: valueSource
                  property: "rpm"
                  easing.type: Easing.InOutSine
                  to: 6.3
                  duration: 600
              }

              ParallelAnimation {
                  NumberAnimation {
                      target: valueSource
                      property: "kph"
                      easing.type: Easing.InOutSine
                      to: 30
                      duration: 5000
                  }
                  NumberAnimation {
                      target: valueSource
                      property: "rpm"
                      easing.type: Easing.InOutSine
                      to: 2.6
                      duration: 5000
                  }
              }

              NumberAnimation {
                  target: valueSource
                  property: "rpm"
                  easing.type: Easing.InOutSine
                  to: 6.5
                  duration: 600
              }

              // Second to first gear.
              ParallelAnimation {
                  NumberAnimation {
                      target: valueSource
                      property: "kph"
                      easing.type: Easing.InOutSine
                      to: 0
                      duration: 5000
                  }
                  NumberAnimation {
                      target: valueSource
                      property: "rpm"
                      easing.type: Easing.InOutSine
                      to: 1
                      duration: 4500
                  }
              }

              PauseAnimation {
                  duration: 5000
              }
          }
      }
  }

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