- Qt 5.5
- Qt Bluetooth
- Bluetooth Low Energy Heart Listener Example
- home.qml Example File
- Qt 5.5.1 Reference Documentation

# home.qml Example File

heartlistener/assets/home.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,
    ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/

    import QtQuick 2.0

    Rectangle {
        id: screen
        color: "#F0EBED"
        property string message: heartRate.message
        onMessageChanged: {
            if (heartRate.message != "Scanning for devices..." && heartRate.message != "Low Energy device found. Scanning for more...") {
                background.visible = false;
                demoMode.visible = true;
            }
            else {
                demoMode.visible = false;
                background.visible = true;
            }
        }

        Rectangle {
            id:select
            width: parent.width
            anchors.top: parent.top
            height: 80
            color: "#F0EBED"
            border.color: "#3870BA"
            border.width: 2
            radius: 10

            Text {
                id: selectText
                color: "#3870BA"
                font.pixelSize: 34
                anchors.centerIn: parent
                text: "Select Device"
            }
        }

        Rectangle {
            id: spinner
            width: parent.width
            anchors.top: select.bottom
            anchors.bottom: demoMode.top
            visible: false
            color: "#F0EBED"
            z: 100

            Rectangle {
                id: inside
                anchors.centerIn: parent
                Image {
                    id: background

                    width:100
                    height:100
                    anchors.horizontalCenter: parent.horizontalCenter

                    source: "busy_dark.png"
                    fillMode: Image.PreserveAspectFit
                    NumberAnimation on rotation { duration: 3000; from:0; to: 360; loops: Animation.Infinite}
                }

                Text {
                    id: infotext
                    anchors.horizontalCenter: parent.horizontalCenter
                    anchors.top: background.bottom
                    text: heartRate.message
                    color: "#8F8F8F"
                }
            }
        }

        Component.onCompleted: {
            heartRate.deviceSearch();
            spinner.visible=true;
        }

        ListView {
            id: theListView
            width: parent.width
            onModelChanged: spinner.visible=false
            anchors.top: select.bottom
            anchors.bottom: demoMode.top
            model: heartRate.name

            delegate: Rectangle {
                id: box
                height:140
                width: parent.width
                color: "#3870BA"
                border.color: "#F0EBED"
                border.width: 5
                radius: 15

                MouseArea {
                    anchors.fill: parent
                    onPressed: { box.color= "#3265A7"; box.height=110}
                    onClicked: {
                        heartRate.connectToService(modelData.deviceAddress);
                        pageLoader.source="monitor.qml";
                    }
                }

                Text {
                    id: device
                    font.pixelSize: 30
                    text: modelData.deviceName
                    anchors.top: parent.top
                    anchors.topMargin: 5
                    anchors.horizontalCenter: parent.horizontalCenter
                    color: "#F0EBED"
                }

                Text {
                    id: deviceAddress
                    font.pixelSize: 30
                    text: modelData.deviceAddress
                    anchors.bottom: parent.bottom
                    anchors.bottomMargin: 5
                    anchors.horizontalCenter: parent.horizontalCenter
                    color: "#F0EBED"
                }
            }
        }

        Button {
            id:demoMode
            buttonWidth: parent.width
            buttonHeight: 0.1*parent.height
            anchors.horizontalCenter: parent.horizontalCenter
            anchors.bottom: scanAgain.top
            text: "Run Demo"
            onButtonClick: {
                heartRate.startDemo();
                pageLoader.source="monitor.qml";
            }
        }

        Button {
            id:scanAgain
            buttonWidth: parent.width
            buttonHeight: 0.1*parent.height
            anchors.horizontalCenter: parent.horizontalCenter
            anchors.bottom: parent.bottom
            text: "Menu"
            onButtonClick: pageLoader.source="main.qml"
        }
    }