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<h1 class="title">devicefinder.cpp Example File</h1>
<span class="subtitle">heartrate-game/devicefinder.cpp</span>
<!-- $$$heartrate-game/devicefinder.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/***************************************************************************
**
** 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.
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**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** $QT_END_LICENSE$
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****************************************************************************/</span>
<span class="preprocessor">#include "devicefinder.h"</span>
<span class="preprocessor">#include "devicehandler.h"</span>
<span class="preprocessor">#include "deviceinfo.h"</span>
DeviceFinder<span class="operator">::</span>DeviceFinder(DeviceHandler <span class="operator">*</span>handler<span class="operator">,</span> <span class="type">QObject</span> <span class="operator">*</span>parent):
BluetoothBaseClass(parent)<span class="operator">,</span>
m_deviceHandler(handler)
{
m_deviceDiscoveryAgent <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span>(<span class="keyword">this</span>);
m_deviceDiscoveryAgent<span class="operator">-</span><span class="operator">></span>setLowEnergyDiscoveryTimeout(<span class="number">5000</span>);
connect(m_deviceDiscoveryAgent<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span>deviceDiscovered<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>DeviceFinder<span class="operator">::</span>addDevice);
connect(m_deviceDiscoveryAgent<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">void</span> (<span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span><span class="operator">*</span>)(<span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span>Error)<span class="operator">></span>(<span class="operator">&</span><span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span>error)<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>DeviceFinder<span class="operator">::</span>scanError);
connect(m_deviceDiscoveryAgent<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span>finished<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>DeviceFinder<span class="operator">::</span>scanFinished);
connect(m_deviceDiscoveryAgent<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span>canceled<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>DeviceFinder<span class="operator">::</span>scanFinished);
<span class="preprocessor">#ifdef SIMULATOR</span>
m_demoTimer<span class="operator">.</span>setSingleShot(<span class="keyword">true</span>);
m_demoTimer<span class="operator">.</span>setInterval(<span class="number">2000</span>);
connect(<span class="operator">&</span>m_demoTimer<span class="operator">,</span> <span class="operator">&</span><span class="type">QTimer</span><span class="operator">::</span>timeout<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>DeviceFinder<span class="operator">::</span>scanFinished);
<span class="preprocessor">#endif</span>
}
DeviceFinder<span class="operator">::</span><span class="operator">~</span>DeviceFinder()
{
qDeleteAll(m_devices);
m_devices<span class="operator">.</span>clear();
}
<span class="type">void</span> DeviceFinder<span class="operator">::</span>startSearch()
{
clearMessages();
m_deviceHandler<span class="operator">-</span><span class="operator">></span>setDevice(nullptr);
qDeleteAll(m_devices);
m_devices<span class="operator">.</span>clear();
<span class="keyword">emit</span> devicesChanged();
<span class="preprocessor">#ifdef SIMULATOR</span>
m_demoTimer<span class="operator">.</span>start();
<span class="preprocessor">#else</span>
m_deviceDiscoveryAgent<span class="operator">-</span><span class="operator">></span>start(<span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span>LowEnergyMethod);
<span class="preprocessor">#endif</span>
<span class="keyword">emit</span> scanningChanged();
setInfo(tr(<span class="string">"Scanning for devices..."</span>));
}
<span class="type">void</span> DeviceFinder<span class="operator">::</span>addDevice(<span class="keyword">const</span> <span class="type"><a href="qbluetoothdeviceinfo.html">QBluetoothDeviceInfo</a></span> <span class="operator">&</span>device)
{
<span class="comment">// If device is LowEnergy-device, add it to the list</span>
<span class="keyword">if</span> (device<span class="operator">.</span>coreConfigurations() <span class="operator">&</span> <span class="type"><a href="qbluetoothdeviceinfo.html">QBluetoothDeviceInfo</a></span><span class="operator">::</span>LowEnergyCoreConfiguration) {
m_devices<span class="operator">.</span>append(<span class="keyword">new</span> DeviceInfo(device));
setInfo(tr(<span class="string">"Low Energy device found. Scanning more..."</span>));
<span class="keyword">emit</span> devicesChanged();
}
<span class="comment">//...</span>
}
<span class="type">void</span> DeviceFinder<span class="operator">::</span>scanError(<span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span>Error error)
{
<span class="keyword">if</span> (error <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span>PoweredOffError)
setError(tr(<span class="string">"The Bluetooth adaptor is powered off."</span>));
<span class="keyword">else</span> <span class="keyword">if</span> (error <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qbluetoothdevicediscoveryagent.html">QBluetoothDeviceDiscoveryAgent</a></span><span class="operator">::</span>InputOutputError)
setError(tr(<span class="string">"Writing or reading from the device resulted in an error."</span>));
<span class="keyword">else</span>
setError(tr(<span class="string">"An unknown error has occurred."</span>));
}
<span class="type">void</span> DeviceFinder<span class="operator">::</span>scanFinished()
{
<span class="preprocessor">#ifdef SIMULATOR</span>
<span class="comment">// Only for testing</span>
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> <span class="number">4</span>; i<span class="operator">+</span><span class="operator">+</span>)
m_devices<span class="operator">.</span>append(<span class="keyword">new</span> DeviceInfo(<span class="type"><a href="qbluetoothdeviceinfo.html">QBluetoothDeviceInfo</a></span>()));
<span class="preprocessor">#endif</span>
<span class="keyword">if</span> (m_devices<span class="operator">.</span>isEmpty())
setError(tr(<span class="string">"No Low Energy devices found."</span>));
<span class="keyword">else</span>
setInfo(tr(<span class="string">"Scanning done."</span>));
<span class="keyword">emit</span> scanningChanged();
<span class="keyword">emit</span> devicesChanged();
}
<span class="type">void</span> DeviceFinder<span class="operator">::</span>connectToService(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&</span>address)
{
m_deviceDiscoveryAgent<span class="operator">-</span><span class="operator">></span>stop();
DeviceInfo <span class="operator">*</span>currentDevice <span class="operator">=</span> nullptr;
<span class="keyword">for</span> (<span class="type">QObject</span> <span class="operator">*</span>entry : qAsConst(m_devices)) {
<span class="keyword">auto</span> device <span class="operator">=</span> qobject_cast<span class="operator"><</span>DeviceInfo <span class="operator">*</span><span class="operator">></span>(entry);
<span class="keyword">if</span> (device <span class="operator">&</span><span class="operator">&</span> device<span class="operator">-</span><span class="operator">></span>getAddress() <span class="operator">=</span><span class="operator">=</span> address ) {
currentDevice <span class="operator">=</span> device;
<span class="keyword">break</span>;
}
}
<span class="keyword">if</span> (currentDevice)
m_deviceHandler<span class="operator">-</span><span class="operator">></span>setDevice(currentDevice);
clearMessages();
}
bool DeviceFinder<span class="operator">::</span>scanning() <span class="keyword">const</span>
{
<span class="preprocessor">#ifdef SIMULATOR</span>
<span class="keyword">return</span> m_demoTimer<span class="operator">.</span>isActive();
<span class="preprocessor">#else</span>
<span class="keyword">return</span> m_deviceDiscoveryAgent<span class="operator">-</span><span class="operator">></span>isActive();
<span class="preprocessor">#endif</span>
}
<span class="type">QVariant</span> DeviceFinder<span class="operator">::</span>devices()
{
<span class="keyword">return</span> <span class="type">QVariant</span><span class="operator">::</span>fromValue(m_devices);
}
</pre>
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<!-- @@@heartrate-game/devicefinder.cpp -->
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