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  ** Copyright (C) 2017 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the QtSensors module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
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  /* Layout
                                                                                    mainWnd
                                                                                   /
  ---------------------------------------------------------------------------------
  |--------------------------------------------------------------------------------
  ||                                  labelTitle                                  |
  |--------------------------------------------------------------------------------
  |-------------------------------------------------------------------------------- <---- tiltLine
  |--------------------------------------------------------------------------------
  ||                                  labelTilt                                   |
  |--------------------------------------------------------------------------------
  |         / accuracyRect                               / speedRect
  |-------------------------------------------||----------------------------------|
  || Accuracy <----- textAccuracy             || Speed <-----textSpeed            |
  ||  value   <- textAccuracyValue            ||  value    <- textSpeedValue      |
  || ----------------- ------------------     || --------------- ---------------- |
  || | accuracyLower | | accuracyHigher |     || | speedLower  | | speedHigher  | |
  || ----------------- ------------------     || --------------- ---------------- |
  |------------------------------------------ ||----------------------------------|
  | -----------
  | |Calibrate|    <------------------ calibrate
  | -----------
  | ---------
  | |Degree |    <-------------------- useRadian                   X Rotation: 0  <------------------ xrottext
  | ---------
  | ---------
  | |Start  |    <-------------------- tiltStart                   Y Rotation: 0  <------------------ yrottext
  | ---------
  |-------------------------------------------------------------------------------- <---- ambientlightLine
  |--------------------------------------------------------------------------------
  ||                                  labelAmbientLight                           |
  |--------------------------------------------------------------------------------
  | ---------
  | |Start  |    <-------------------- ablStart                    Ambient light: -  <--------------- abltext
  | ---------
  |-------------------------------------------------------------------------------- <---- proximityLine
  |--------------------------------------------------------------------------------
  ||                                  labelProximityLight                           |
  |--------------------------------------------------------------------------------
  | ---------
  | |Start  |    <-------------------- proxiStart                  Proximity: -  <--------------- proxitext
  | ---------
  ------------------------------------------------------------------------------
  */

  //Import the declarative plugins
  import QtQuick 2.0
  import "components"

  import QtSensors 5.0

  ApplicationWindow {

      // Sensor types used
      TiltSensor {
          id: tilt
          active: false
      }

      AmbientLightSensor {
          id: ambientlight
          active: false
          onReadingChanged: {
              if (reading.lightLevel == AmbientLightReading.Dark)
                  ambientlighttext.text = "Ambient light: Dark";
              else if (reading.lightLevel == AmbientLightReading.Twilight)
                  ambientlighttext.text = "Ambient light: Twilight";
              else if (reading.lightLevel == AmbientLightReading.Light)
                  ambientlighttext.text = "Ambient light: Light";
              else if (reading.lightLevel == AmbientLightReading.Bright)
                  ambientlighttext.text = "Ambient light: Bright";
              else if (reading.lightLevel == AmbientLightReading.Sunny)
                  ambientlighttext.text = "Ambient light: Sunny";
              else
                  ambientlighttext.text = "Ambient light: Unknown";
          }
      }

      ProximitySensor {
          id: proxi
          active: false
      }

      Column {
          spacing: 10
          anchors.fill: parent
          anchors.margins: 5

          Text {
              id: labelTitle
              width: parent.width
              horizontalAlignment: Text.AlignHCenter
              font.pixelSize: 30
              font.bold: true
              text: "QML QtSensors"
          }

          // Tilt region
          Divider { label: "TiltSensor" }

          Row {
              spacing: 20
              width: parent.width
              anchors.margins: 5
              Button {
                  id: calibrate
                  height: 30
                  width: 80
                  text: "Calibrate"
                  onClicked: tilt.calibrate();
              }
              Text {
                  id: xrottext
                  height: 30
                  verticalAlignment: Text.AlignVCenter
                  text: "X Rotation: " + (tilt.reading ? tilt.reading.xRotation.toFixed(2) + "°" : "Unknown")
              }
          }
          Row {
              spacing: 20
              width: parent.width
              anchors.margins: 5
              Button {
                  id: tiltStart
                  height: 30
                  width: 80
                  text: tilt.active ? "Stop" : "Start"
                  onClicked: {
                      tilt.active = (tiltStart.text === "Start");
                  }
              }
              Text {
                  id: yrottext
                  height: 30
                  verticalAlignment: Text.AlignVCenter
                  text: "Y Rotation: " + (tilt.reading ? tilt.reading.yRotation.toFixed(2) + "°" : "Unknown")
              }
          }

          Divider { label: "AmbientLightSensor" }

          Row {
              spacing: 20
              width: parent.width
              anchors.margins: 5

              Button{
                  id: ambientlightStart
                  height: 30
                  width: 80
                  text: ambientlight.active ? "Stop" : "Start"
                  onClicked: {
                      ambientlight.active = (ambientlightStart.text === "Start" ? true : false);
                  }
              }

              Text {
                  id: ambientlighttext
                  height: 30
                  verticalAlignment: Text.AlignVCenter
                  text: "Ambient light: Unknown"
              }
          }

          // Proximity region
          Divider { label: "ProximitySensor" }

          Row {
              spacing: 20
              width: parent.width
              anchors.margins: 5

              Button {
                  id: proxiStart
                  height: 30
                  width: 80
                  text: proxi.active ? "Stop" : "Start"

                  onClicked: {
                      proxi.active = (proxiStart.text === "Start"  ? true: false);
                  }
              }

              Text {
                  id: proxitext
                  height: 30
                  verticalAlignment: Text.AlignVCenter
                  text: "Proximity: " +
                        (proxi.active ? (proxi.reading.near ? "Near" : "Far") : "Unknown")
              }
          }
      }
  }