Qt 5.11 | Qt 3D | Qt 3D: Planets QML Example | AppleTVInput.qml Example File

Qt 5.11.3 Reference Documentation

# AppleTVInput.qml Example File

planets-qml/AppleTVInput.qml

      /****************************************************************************
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      import QtQuick 2.7
      import QtQuick.Window 2.2

      Item {
          id: appleTVInput

          property real xThreshold: 500
          property real yThreshold: 300

          signal swipeLeft()
          signal swipeRight()
          signal swipeUp()
          signal swipeDown()

          onSwipeLeft: {
              var focusedItem = Window.window.activeFocusItem
              if (typeof(focusedItem.swipeLeft) === "function") {
                  focusedItem.swipeLeft()
              }
          }

          onSwipeRight: {
              var focusedItem = Window.window.activeFocusItem
              if (typeof(focusedItem.swipeRight) === "function") {
                  focusedItem.swipeRight()
              }
          }

          onSwipeUp: {
              var focusedItem = Window.window.activeFocusItem
              if (typeof(focusedItem.swipeUp) === "function") {
                  focusedItem.swipeUp()
              }
          }

          onSwipeDown: {
              var focusedItem = Window.window.activeFocusItem
              if (typeof(focusedItem.swipeDown) === "function") {
                  focusedItem.swipeDown()
              }
          }

          MultiPointTouchArea {
              id: multiPointTouchArea

              anchors.fill: parent

              property int startX: 0
              property int startY: 0

              property int pointX: 0
              property int pointY: 0

              property int xIsIncreasing: -1 // 1 - true, 0 - false, -1 - undefined
              property int yIsIncreasing: -1 // 1 - true, 0 - false, -1 - undefined

              property bool pressed: false

              touchPoints: [
                  TouchPoint {

                      onPressedChanged: {
                          if (pressed) {
                              multiPointTouchArea.startX = x
                              multiPointTouchArea.startY = y
                              multiPointTouchArea.pressed = true
                          } else {
                              multiPointTouchArea.pressed = false
                              multiPointTouchArea.xIsIncreasing = -1
                              multiPointTouchArea.yIsIncreasing = -1
                              multiPointTouchArea.startX = 0
                              multiPointTouchArea.startY = 0
                          }
                      }

                      onXChanged: {
                          if (multiPointTouchArea.pressed) {
                              var newValue = x - multiPointTouchArea.startX

                              var focusedItem = appleTVInput.Window.window.activeFocusItem

                              if (focusedItem.panningEnabled) {
                                  if (multiPointTouchArea.xIsIncreasing === -1) {
                                      multiPointTouchArea.xIsIncreasing = (newValue > multiPointTouchArea.startX) ? 1 : 0
                                  } else {
                                      if (multiPointTouchArea.xIsIncreasing === 1 && newValue < multiPointTouchArea.pointX) {
                                          multiPointTouchArea.startX = x
                                          multiPointTouchArea.xIsIncreasing = 0
                                          multiPointTouchArea.pointX = newValue
                                      } else if (multiPointTouchArea.xIsIncreasing === 0 && newValue > multiPointTouchArea.pointX) {
                                          multiPointTouchArea.startX = x
                                          multiPointTouchArea.xIsIncreasing = 1
                                          multiPointTouchArea.pointX = newValue
                                      } else {
                                          multiPointTouchArea.pointX = newValue
                                          focusedItem.pannedHorizontally(multiPointTouchArea.pointX / (multiPointTouchArea.width / 2))
                                      }
                                  }
                              } else {
                                  multiPointTouchArea.pointX = newValue

                                  if (multiPointTouchArea.pointX > xThreshold) {
                                      multiPointTouchArea.startX = x
                                      swipeRight()
                                  } else if (multiPointTouchArea.pointX < -xThreshold) {
                                      multiPointTouchArea.startX = x
                                      swipeLeft()
                                  }
                              }
                          }
                      }

                      onYChanged: {
                          if (multiPointTouchArea.pressed) {
                              var newValue = multiPointTouchArea.startY - y

                              var focusedItem = appleTVInput.Window.window.activeFocusItem

                              if (focusedItem.panningEnabled) {
                                  if (multiPointTouchArea.yIsIncreasing === -1) {
                                      multiPointTouchArea.yIsIncreasing = (newValue > multiPointTouchArea.startY) ? 1 : 0
                                  } else {
                                      if (multiPointTouchArea.yIsIncreasing === 1 && newValue < multiPointTouchArea.pointY) {
                                          multiPointTouchArea.startY = y
                                          multiPointTouchArea.yIsIncreasing = 0
                                          multiPointTouchArea.pointY = newValue
                                      } else if (multiPointTouchArea.yIsIncreasing === 0 && newValue > multiPointTouchArea.pointY) {
                                          multiPointTouchArea.startY = y
                                          multiPointTouchArea.yIsIncreasing = 1
                                          multiPointTouchArea.pointY = newValue
                                      } else {
                                          multiPointTouchArea.pointY = newValue
                                          focusedItem.pannedVertically(multiPointTouchArea.pointY / (multiPointTouchArea.height / 2))
                                      }
                                  }
                              } else {
                                  multiPointTouchArea.pointY = newValue

                                  if (multiPointTouchArea.pointY > yThreshold) {
                                      multiPointTouchArea.startY = y
                                      swipeUp()
                                  } else if (multiPointTouchArea.pointY < -yThreshold) {
                                      multiPointTouchArea.startY = y
                                      swipeDown()
                                  }
                              }
                          }
                      }
                  }
              ]
          }
      }