qt-everywhere-src-5.14.1/qtconnectivity/examples/bluetooth/heartrate-game/qml/App.qml

/***************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the QtBluetooth module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, 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 2.5

Item {
    id: app
    anchors.fill: parent
    opacity: 0.0

    Behavior on opacity { NumberAnimation { duration: 500 } }

    property var lastPages: []
    property int __currentIndex: 0

    function init()
    {
        opacity = 1.0
        showPage("Connect.qml")
    }

    function prevPage()
    {
        lastPages.pop()
        pageLoader.setSource(lastPages[lastPages.length-1])
        __currentIndex = lastPages.length-1;
    }

    function showPage(name)
    {
        lastPages.push(name)
        pageLoader.setSource(name)
        __currentIndex = lastPages.length-1;
    }

    TitleBar {
        id: titleBar
        currentIndex: __currentIndex

        onTitleClicked: {
            if (index < __currentIndex)
                pageLoader.item.close()
        }
    }

    Loader {
        id: pageLoader
        anchors.left: parent.left
        anchors.right: parent.right
        anchors.top: titleBar.bottom
        anchors.bottom: parent.bottom

        onStatusChanged: {
            if (status === Loader.Ready)
            {
                pageLoader.item.init();
                pageLoader.item.forceActiveFocus()
            }
        }
    }

    Keys.onReleased: {
        switch (event.key) {
        case Qt.Key_Escape:
        case Qt.Key_Back: {
            if (__currentIndex > 0) {
                pageLoader.item.close()
                event.accepted = true
            } else {
                Qt.quit()
            }
            break;
        }
        default: break;
        }
    }

    BluetoothAlarmDialog {
        id: btAlarmDialog
        anchors.fill: parent
        visible: !connectionHandler.alive
    }
}