Qt Quick Examples - Animation | Qt Quick 5.13.0

Qt 5.13 | Qt Quick | Qt Quick Examples - Animation

Qt 5.13.0 Reference Documentation

# Qt Quick Examples - Animation

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      import QtQuick 2.0

      Rectangle {
          id: container

          property string text: "Drag me!"
          property bool animated: true

          width: 320; height: 480; color: "#474747"; focus: true

          Keys.onPressed: {
              if (event.key == Qt.Key_Delete || event.key == Qt.Key_Backspace)
                  container.remove()
              else if (event.text != "") {
                  container.append(event.text)
              }
          }

          function append(text) {
              container.animated = false
              var lastLetter = container.children[container.children.length - 1]
              var newLetter = letterComponent.createObject(container)
              newLetter.text = text
              newLetter.follow = lastLetter
              container.animated = true
          }

          function remove() {
              if (container.children.length)
                  container.children[container.children.length - 1].destroy()
          }

          function doLayout() {
              var follow = null
              for (var i = 0; i < container.text.length; ++i) {
                  var newLetter = letterComponent.createObject(container)
                  newLetter.text = container.text[i]
                  newLetter.follow = follow
                  follow = newLetter
              }
          }

          Component {
              id: letterComponent
              Text {
                  id: letter
                  property variant follow

                  x: follow ? follow.x + follow.width : container.width / 6
                  y: follow ? follow.y : container.height / 2

                  font.pixelSize: 40; font.bold: true
                  color: "#999999"; styleColor: "#222222"; style: Text.Raised

                  MouseArea {
                      anchors.fill: parent
                      drag.target: letter; drag.axis: Drag.XAndYAxis
                      onPressed: letter.color = "#dddddd"
                      onReleased: letter.color = "#999999"
                  }

                  Behavior on x { enabled: container.animated; SpringAnimation { spring: 3; damping: 0.3; mass: 1.0 } }
                  Behavior on y { enabled: container.animated; SpringAnimation { spring: 3; damping: 0.3; mass: 1.0 } }
              }
          }

          Component.onCompleted: doLayout()
      }