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<td >Qt 5.9</td><td ><a href="qtbluetooth-index.html">Qt Bluetooth</a></td><td ><a href="qtbluetooth-btchat-example.html">Bluetooth Chat Example</a></td><td >chat.cpp Example File</td></tr></table><table class="buildversion"><tr>
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<h1 class="title">chat.cpp Example File</h1>
<span class="subtitle">btchat/chat.cpp</span>
<!-- $$$btchat/chat.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 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include "chat.h"</span>
<span class="preprocessor">#include "remoteselector.h"</span>
<span class="preprocessor">#include "chatserver.h"</span>
<span class="preprocessor">#include "chatclient.h"</span>
<span class="preprocessor">#include <qbluetoothuuid.h></span>
<span class="preprocessor">#include <qbluetoothserver.h></span>
<span class="preprocessor">#include <qbluetoothservicediscoveryagent.h></span>
<span class="preprocessor">#include <qbluetoothdeviceinfo.h></span>
<span class="preprocessor">#include <qbluetoothlocaldevice.h></span>
<span class="preprocessor">#ifdef Q_OS_ANDROID</span>
<span class="preprocessor">#include <QtAndroidExtras/QtAndroid></span>
<span class="preprocessor">#endif</span>
<span class="preprocessor">#include <QTimer></span>
<span class="preprocessor">#include <QDebug></span>
<span class="keyword">static</span> <span class="keyword">const</span> QLatin1String serviceUuid(<span class="string">"e8e10f95-1a70-4b27-9ccf-02010264e9c8"</span>);
<span class="preprocessor">#ifdef Q_OS_ANDROID</span>
<span class="keyword">static</span> <span class="keyword">const</span> QLatin1String reverseUuid(<span class="string">"c8e96402-0102-cf9c-274b-701a950fe1e8"</span>);
<span class="preprocessor">#endif</span>
Chat<span class="operator">::</span>Chat(<span class="type">QWidget</span> <span class="operator">*</span>parent)
: <span class="type">QDialog</span>(parent)<span class="operator">,</span> currentAdapterIndex(<span class="number">0</span>)<span class="operator">,</span> ui(<span class="keyword">new</span> Ui_Chat)
{
ui<span class="operator">-</span><span class="operator">></span>setupUi(<span class="keyword">this</span>);
connect(ui<span class="operator">-</span><span class="operator">></span>quitButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(accept()));
connect(ui<span class="operator">-</span><span class="operator">></span>connectButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(connectClicked()));
connect(ui<span class="operator">-</span><span class="operator">></span>sendButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(sendClicked()));
localAdapters <span class="operator">=</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>allDevices();
<span class="keyword">if</span> (localAdapters<span class="operator">.</span>count() <span class="operator"><</span> <span class="number">2</span>) {
ui<span class="operator">-</span><span class="operator">></span>localAdapterBox<span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">false</span>);
} <span class="keyword">else</span> {
<span class="comment">//we ignore more than two adapters</span>
ui<span class="operator">-</span><span class="operator">></span>localAdapterBox<span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">true</span>);
ui<span class="operator">-</span><span class="operator">></span>firstAdapter<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Default (%1)"</span><span class="operator">,</span> <span class="string">"%1 = Bluetooth address"</span>)<span class="operator">.</span>
arg(localAdapters<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">.</span>address()<span class="operator">.</span>toString()));
ui<span class="operator">-</span><span class="operator">></span>secondAdapter<span class="operator">-</span><span class="operator">></span>setText(localAdapters<span class="operator">.</span>at(<span class="number">1</span>)<span class="operator">.</span>address()<span class="operator">.</span>toString());
ui<span class="operator">-</span><span class="operator">></span>firstAdapter<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
connect(ui<span class="operator">-</span><span class="operator">></span>firstAdapter<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(newAdapterSelected()));
connect(ui<span class="operator">-</span><span class="operator">></span>secondAdapter<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(newAdapterSelected()));
<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span> adapter(localAdapters<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">.</span>address());
adapter<span class="operator">.</span>setHostMode(<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostDiscoverable);
}
server <span class="operator">=</span> <span class="keyword">new</span> ChatServer(<span class="keyword">this</span>);
connect(server<span class="operator">,</span> SIGNAL(clientConnected(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(clientConnected(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>)));
connect(server<span class="operator">,</span> SIGNAL(clientDisconnected(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(clientDisconnected(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>)));
connect(server<span class="operator">,</span> SIGNAL(messageReceived(<span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">,</span><span class="type"><a href="../qtcore/qstring.html">QString</a></span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(showMessage(<span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">,</span><span class="type"><a href="../qtcore/qstring.html">QString</a></span>)));
connect(<span class="keyword">this</span><span class="operator">,</span> SIGNAL(sendMessage(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))<span class="operator">,</span> server<span class="operator">,</span> SLOT(sendMessage(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>)));
server<span class="operator">-</span><span class="operator">></span>startServer();
localName <span class="operator">=</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span>()<span class="operator">.</span>name();
}
Chat<span class="operator">::</span><span class="operator">~</span>Chat()
{
<a href="../qtcore/qtalgorithms.html#qDeleteAll">qDeleteAll</a>(clients);
<span class="keyword">delete</span> server;
}
<span class="type">void</span> Chat<span class="operator">::</span>clientConnected(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>name)
{
ui<span class="operator">-</span><span class="operator">></span>chat<span class="operator">-</span><span class="operator">></span>insertPlainText(<span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>fromLatin1(<span class="string">"%1 has joined chat.\n"</span>)<span class="operator">.</span>arg(name));
}
<span class="type">void</span> Chat<span class="operator">::</span>clientDisconnected(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>name)
{
ui<span class="operator">-</span><span class="operator">></span>chat<span class="operator">-</span><span class="operator">></span>insertPlainText(<span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>fromLatin1(<span class="string">"%1 has left.\n"</span>)<span class="operator">.</span>arg(name));
}
<span class="type">void</span> Chat<span class="operator">::</span>connected(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>name)
{
ui<span class="operator">-</span><span class="operator">></span>chat<span class="operator">-</span><span class="operator">></span>insertPlainText(<span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>fromLatin1(<span class="string">"Joined chat with %1.\n"</span>)<span class="operator">.</span>arg(name));
}
<span class="type">void</span> Chat<span class="operator">::</span>newAdapterSelected()
{
<span class="keyword">const</span> <span class="type">int</span> newAdapterIndex <span class="operator">=</span> adapterFromUserSelection();
<span class="keyword">if</span> (currentAdapterIndex <span class="operator">!</span><span class="operator">=</span> newAdapterIndex) {
server<span class="operator">-</span><span class="operator">></span>stopServer();
currentAdapterIndex <span class="operator">=</span> newAdapterIndex;
<span class="keyword">const</span> <span class="type"><a href="qbluetoothhostinfo.html">QBluetoothHostInfo</a></span> info <span class="operator">=</span> localAdapters<span class="operator">.</span>at(currentAdapterIndex);
<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span> adapter(info<span class="operator">.</span>address());
adapter<span class="operator">.</span>setHostMode(<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostDiscoverable);
server<span class="operator">-</span><span class="operator">></span>startServer(info<span class="operator">.</span>address());
localName <span class="operator">=</span> info<span class="operator">.</span>name();
}
}
<span class="type">int</span> Chat<span class="operator">::</span>adapterFromUserSelection() <span class="keyword">const</span>
{
<span class="type">int</span> result <span class="operator">=</span> <span class="number">0</span>;
<span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span> newAdapter <span class="operator">=</span> localAdapters<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">.</span>address();
<span class="keyword">if</span> (ui<span class="operator">-</span><span class="operator">></span>secondAdapter<span class="operator">-</span><span class="operator">></span>isChecked()) {
newAdapter <span class="operator">=</span> localAdapters<span class="operator">.</span>at(<span class="number">1</span>)<span class="operator">.</span>address();
result <span class="operator">=</span> <span class="number">1</span>;
}
<span class="keyword">return</span> result;
}
<span class="type">void</span> Chat<span class="operator">::</span>clientDisconnected()
{
ChatClient <span class="operator">*</span>client <span class="operator">=</span> qobject_cast<span class="operator"><</span>ChatClient <span class="operator">*</span><span class="operator">></span>(sender());
<span class="keyword">if</span> (client) {
clients<span class="operator">.</span>removeOne(client);
client<span class="operator">-</span><span class="operator">></span>deleteLater();
}
}
<span class="type">void</span> Chat<span class="operator">::</span>connectClicked()
{
ui<span class="operator">-</span><span class="operator">></span>connectButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
<span class="comment">// scan for services</span>
<span class="keyword">const</span> <span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span> adapter <span class="operator">=</span> localAdapters<span class="operator">.</span>isEmpty() <span class="operator">?</span>
<span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span>() :
localAdapters<span class="operator">.</span>at(currentAdapterIndex)<span class="operator">.</span>address();
RemoteSelector remoteSelector(adapter);
<span class="preprocessor">#ifdef Q_OS_ANDROID</span>
<span class="keyword">if</span> (<span class="type">QtAndroid</span><span class="operator">::</span>androidSdkVersion() <span class="operator">></span><span class="operator">=</span> <span class="number">23</span>)
remoteSelector<span class="operator">.</span>startDiscovery(<span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span>(reverseUuid));
<span class="keyword">else</span>
remoteSelector<span class="operator">.</span>startDiscovery(<span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span>(serviceUuid));
<span class="preprocessor">#else</span>
remoteSelector<span class="operator">.</span>startDiscovery(<span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span>(serviceUuid));
<span class="preprocessor">#endif</span>
<span class="keyword">if</span> (remoteSelector<span class="operator">.</span>exec() <span class="operator">=</span><span class="operator">=</span> <span class="type">QDialog</span><span class="operator">::</span>Accepted) {
<span class="type"><a href="qbluetoothserviceinfo.html">QBluetoothServiceInfo</a></span> service <span class="operator">=</span> remoteSelector<span class="operator">.</span>service();
<a href="../qtcore/qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Connecting to service 2"</span> <span class="operator"><</span><span class="operator"><</span> service<span class="operator">.</span>serviceName()
<span class="operator"><</span><span class="operator"><</span> <span class="string">"on"</span> <span class="operator"><</span><span class="operator"><</span> service<span class="operator">.</span>device()<span class="operator">.</span>name();
<span class="comment">// Create client</span>
<a href="../qtcore/qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Going to create client"</span>;
ChatClient <span class="operator">*</span>client <span class="operator">=</span> <span class="keyword">new</span> ChatClient(<span class="keyword">this</span>);
<a href="../qtcore/qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Connecting..."</span>;
connect(client<span class="operator">,</span> SIGNAL(messageReceived(<span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">,</span><span class="type"><a href="../qtcore/qstring.html">QString</a></span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(showMessage(<span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">,</span><span class="type"><a href="../qtcore/qstring.html">QString</a></span>)));
connect(client<span class="operator">,</span> SIGNAL(disconnected())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(clientDisconnected()));
connect(client<span class="operator">,</span> SIGNAL(connected(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(connected(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>)));
connect(<span class="keyword">this</span><span class="operator">,</span> SIGNAL(sendMessage(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))<span class="operator">,</span> client<span class="operator">,</span> SLOT(sendMessage(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>)));
<a href="../qtcore/qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Start client"</span>;
client<span class="operator">-</span><span class="operator">></span>startClient(service);
clients<span class="operator">.</span>append(client);
}
ui<span class="operator">-</span><span class="operator">></span>connectButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
}
<span class="type">void</span> Chat<span class="operator">::</span>sendClicked()
{
ui<span class="operator">-</span><span class="operator">></span>sendButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
ui<span class="operator">-</span><span class="operator">></span>sendText<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
showMessage(localName<span class="operator">,</span> ui<span class="operator">-</span><span class="operator">></span>sendText<span class="operator">-</span><span class="operator">></span>text());
<span class="keyword">emit</span> sendMessage(ui<span class="operator">-</span><span class="operator">></span>sendText<span class="operator">-</span><span class="operator">></span>text());
ui<span class="operator">-</span><span class="operator">></span>sendText<span class="operator">-</span><span class="operator">></span>clear();
ui<span class="operator">-</span><span class="operator">></span>sendText<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
ui<span class="operator">-</span><span class="operator">></span>sendButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
}
<span class="type">void</span> Chat<span class="operator">::</span>showMessage(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>sender<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>message)
{
ui<span class="operator">-</span><span class="operator">></span>chat<span class="operator">-</span><span class="operator">></span>insertPlainText(<span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>fromLatin1(<span class="string">"%1: %2\n"</span>)<span class="operator">.</span>arg(sender<span class="operator">,</span> message));
ui<span class="operator">-</span><span class="operator">></span>chat<span class="operator">-</span><span class="operator">></span>ensureCursorVisible();
}
</pre>
</div>
<!-- @@@btchat/chat.cpp -->
</div>
</div>
</div>
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