- Qt 5.5
- Qt Bluetooth
- Bluetooth Low Energy Heart Listener Example
- monitor.qml Example File
- Qt 5.5.1 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.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** 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
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of The Qt Company Ltd nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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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";
            }
        }
    }