device.cpp Example File

/**************************************************************************** ** ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: ** ** 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 For further ** information use the contact form at ** ** 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/
#include "device.h" #include "service.h" #include <qbluetoothaddress.h> #include <qbluetoothdevicediscoveryagent.h> #include <qbluetoothlocaldevice.h> #include <QMenu> #include <QDebug> DeviceDiscoveryDialog::DeviceDiscoveryDialog(QWidget *parent) : QDialog(parent), localDevice(new QBluetoothLocalDevice), ui(new Ui_DeviceDiscovery) { ui->setupUi(this); /* * In case of multiple Bluetooth adapters it is possible to set adapter * which will be used. Example code: * * QBluetoothAddress address("XX:XX:XX:XX:XX:XX"); * discoveryAgent = new QBluetoothDeviceDiscoveryAgent(address); * **/ discoveryAgent = new QBluetoothDeviceDiscoveryAgent(); connect(ui->inquiryType, SIGNAL(toggled(bool)), this, SLOT(setGeneralUnlimited(bool))); connect(ui->scan, SIGNAL(clicked()), this, SLOT(startScan())); connect(discoveryAgent, SIGNAL(deviceDiscovered(QBluetoothDeviceInfo)), this, SLOT(addDevice(QBluetoothDeviceInfo))); connect(discoveryAgent, SIGNAL(finished()), this, SLOT(scanFinished())); connect(ui->list, SIGNAL(itemActivated(QListWidgetItem*)), this, SLOT(itemActivated(QListWidgetItem*))); connect(localDevice, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)), this, SLOT(hostModeStateChanged(QBluetoothLocalDevice::HostMode))); hostModeStateChanged(localDevice->hostMode()); // add context menu for devices to be able to pair device ui->list->setContextMenuPolicy(Qt::CustomContextMenu); connect(ui->list, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(displayPairingMenu(QPoint))); connect(localDevice, SIGNAL(pairingFinished(QBluetoothAddress,QBluetoothLocalDevice::Pairing)) , this, SLOT(pairingDone(QBluetoothAddress,QBluetoothLocalDevice::Pairing))); } DeviceDiscoveryDialog::~DeviceDiscoveryDialog() { delete discoveryAgent; } void DeviceDiscoveryDialog::addDevice(const QBluetoothDeviceInfo &info) { QString label = QString("%1 %2").arg(info.address().toString()).arg(; QList<QListWidgetItem *> items = ui->list->findItems(label, Qt::MatchExactly); if (items.empty()) { QListWidgetItem *item = new QListWidgetItem(label); QBluetoothLocalDevice::Pairing pairingStatus = localDevice->pairingStatus(info.address()); if (pairingStatus == QBluetoothLocalDevice::Paired || pairingStatus == QBluetoothLocalDevice::AuthorizedPaired ) item->setTextColor(QColor(Qt::green)); else item->setTextColor(QColor(Qt::black)); ui->list->addItem(item); } } void DeviceDiscoveryDialog::startScan() { discoveryAgent->start(); ui->scan->setEnabled(false); ui->inquiryType->setEnabled(false); } void DeviceDiscoveryDialog::scanFinished() { ui->scan->setEnabled(true); ui->inquiryType->setEnabled(true); } void DeviceDiscoveryDialog::setGeneralUnlimited(bool unlimited) { if (unlimited) discoveryAgent->setInquiryType(QBluetoothDeviceDiscoveryAgent::GeneralUnlimitedInquiry); else discoveryAgent->setInquiryType(QBluetoothDeviceDiscoveryAgent::LimitedInquiry); } void DeviceDiscoveryDialog::itemActivated(QListWidgetItem *item) { QString text = item->text(); int index = text.indexOf(' '); if (index == -1) return; QBluetoothAddress address(text.left(index)); QString name(text.mid(index + 1)); ServiceDiscoveryDialog d(name, address); d.exec(); } void DeviceDiscoveryDialog::on_discoverable_clicked(bool clicked) { if (clicked) localDevice->setHostMode(QBluetoothLocalDevice::HostDiscoverable); else localDevice->setHostMode(QBluetoothLocalDevice::HostConnectable); } void DeviceDiscoveryDialog::on_power_clicked(bool clicked) { if (clicked) localDevice->powerOn(); else localDevice->setHostMode(QBluetoothLocalDevice::HostPoweredOff); } void DeviceDiscoveryDialog::hostModeStateChanged(QBluetoothLocalDevice::HostMode mode) { if (mode != QBluetoothLocalDevice::HostPoweredOff) ui->power->setChecked(true); else ui->power->setChecked( false); if (mode == QBluetoothLocalDevice::HostDiscoverable) ui->discoverable->setChecked(true); else ui->discoverable->setChecked(false); bool on = !(mode == QBluetoothLocalDevice::HostPoweredOff); ui->scan->setEnabled(on); ui->discoverable->setEnabled(on); } void DeviceDiscoveryDialog::displayPairingMenu(const QPoint &pos) { if (ui->list->count() == 0) return; QMenu menu(this); QAction *pairAction = menu.addAction("Pair"); QAction *removePairAction = menu.addAction("Remove Pairing"); QAction *chosenAction = menu.exec(ui->list->viewport()->mapToGlobal(pos)); QListWidgetItem *currentItem = ui->list->currentItem(); QString text = currentItem->text(); int index = text.indexOf(' '); if (index == -1) return; QBluetoothAddress address (text.left(index)); if (chosenAction == pairAction) { localDevice->requestPairing(address, QBluetoothLocalDevice::Paired); } else if (chosenAction == removePairAction) { localDevice->requestPairing(address, QBluetoothLocalDevice::Unpaired); } } void DeviceDiscoveryDialog::pairingDone(const QBluetoothAddress &address, QBluetoothLocalDevice::Pairing pairing) { QList<QListWidgetItem *> items = ui->list->findItems(address.toString(), Qt::MatchContains); if (pairing == QBluetoothLocalDevice::Paired || pairing == QBluetoothLocalDevice::AuthorizedPaired ) { for (int var = 0; var < items.count(); ++var) { QListWidgetItem *item =; item->setTextColor(QColor(Qt::green)); } } else { for (int var = 0; var < items.count(); ++var) { QListWidgetItem *item =; item->setTextColor(QColor(Qt::red)); } } }

© 2018 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.