Qt 5.6 | Qt Bluetooth | Bluetooth Low Energy Heart Listener Example | monitor.qml Example File

Qt 5.6.3 Reference Documentation

# monitor.qml Example File

heartlistener/assets/monitor.qml

      /***************************************************************************
      **
      ** Copyright (C) 2014 BlackBerry Limited. All rights reserved.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the examples of the QtBluetooth module of the Qt Toolkit.
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      ** $QT_BEGIN_LICENSE:BSD$
      ** You may use this file under the terms of the BSD license as follows:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
      ** met:
      **   * Redistributions of source code must retain the above copyright
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      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
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      import QtQuick 2.0
      import QtQuick.Particles 2.0

      Rectangle {
          id: screenMonitor
          color: "#F0EBED"

          Button {
              id:menu
              buttonWidth: parent.width
              buttonHeight: 0.1 * parent.height
              anchors.horizontalCenter: parent.horizontalCenter
              anchors.top: parent.top
              text: "Menu"
              onButtonClick: {
                  heartRate.disconnectService();
                  pageLoader.source="home.qml";
              }
          }

          Text {
              id: hrValue
              font.pointSize: 24; font.bold: true
              anchors.top:menu.bottom
              anchors.horizontalCenter: parent.horizontalCenter
              anchors.topMargin: 25

              color: "#3870BA"
              text: heartRate.hr
              onTextChanged: {
                  if (heartRate.hr > 0 && updatei != null && heartRate.numDevices() > 0) {
                      updatei.destroy()
                  }
              }
          }

          Rectangle {
              id: updatei
              width: parent.width
              height: 80
              anchors.bottom: stop.top

              color: "#F0EBED"
              border.color: "#3870BA"
              border.width: 2

              Text {
                  id: logi
                  text: heartRate.message
                  anchors.centerIn: updatei
                  color: "#3870BA"
              }
          }

          Image {
              id: background
              width: 300
              height: width
              anchors.centerIn: parent
              source: "blue_heart.png"
              fillMode: Image.PreserveAspectFit
              NumberAnimation on width {
                  running: heartRate.hr > 0;
                  duration: heartRate.hr/60*250;
                  from:300; to: 350;
                  loops: Animation.Infinite;
              }

              ParticleSystem {
                  id: systwo
                  anchors.fill: parent

                  ImageParticle {
                      system: systwo
                      id: cptwo
                      source: "star.png"
                      colorVariation: 0.4
                      color: "#000000FF"
                  }

                  Emitter {
                      //burst on click
                      id: burstytwo
                      system: systwo
                      enabled: true
                      x: 160
                      y: 150
                      emitRate: heartRate.hr*100
                      maximumEmitted: 4000
                      acceleration: AngleDirection {angleVariation: 360; magnitude: 360; }
                      size: 4
                      endSize: 8
                      sizeVariation: 4
                  }

              }

          }

          Button {
              id:stop
              buttonWidth: parent.width
              buttonHeight: 0.1*parent.height
              anchors.horizontalCenter: parent.horizontalCenter
              anchors.bottom: parent.bottom
              text: "Stop Monitoring"
              onButtonClick: {
                  burstytwo.enabled = false;
                  heartRate.disconnectService();
                  pageLoader.source = "results.qml";
              }
          }
      }