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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "device.h"
#include "service.h"
#include "ui_device.h"
#include <qbluetoothaddress.h>
#include <qbluetoothdevicediscoveryagent.h>
#include <qbluetoothlocaldevice.h>
#include <QMenu>
#include <QDebug>
static QColor colorForPairing(QBluetoothLocalDevice::Pairing pairing)
{
return pairing == QBluetoothLocalDevice::Paired
|| pairing == QBluetoothLocalDevice::AuthorizedPaired
? QColor(Qt::green) : QColor(Qt::red);
}
DeviceDiscoveryDialog::DeviceDiscoveryDialog(QWidget *parent) :
QDialog(parent),
localDevice(new QBluetoothLocalDevice),
ui(new Ui_DeviceDiscovery)
{
ui->setupUi(this);
ui->stopScan->setVisible(false);
// In case of multiple Bluetooth adapters it is possible to set the adapter
// to be used. Example code:
//
// QBluetoothAddress address("XX:XX:XX:XX:XX:XX");
// discoveryAgent = new QBluetoothDeviceDiscoveryAgent(address);
discoveryAgent = new QBluetoothDeviceDiscoveryAgent();
connect(ui->scan, &QAbstractButton::clicked, this, &DeviceDiscoveryDialog::startScan);
connect(ui->stopScan, &QAbstractButton::clicked, this, &DeviceDiscoveryDialog::stopScan);
connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::deviceDiscovered,
this, &DeviceDiscoveryDialog::addDevice);
connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::finished,
this, &DeviceDiscoveryDialog::scanFinished);
connect(ui->list, &QListWidget::itemActivated,
this, &DeviceDiscoveryDialog::itemActivated);
connect(localDevice, &QBluetoothLocalDevice::hostModeStateChanged,
this, &DeviceDiscoveryDialog::hostModeStateChanged);
hostModeStateChanged(localDevice->hostMode());
// add context menu for devices to be able to pair device
ui->list->setContextMenuPolicy(Qt::CustomContextMenu);
connect(ui->list, &QWidget::customContextMenuRequested,
this, &DeviceDiscoveryDialog::displayPairingMenu);
connect(localDevice, &QBluetoothLocalDevice::pairingFinished,
this, &DeviceDiscoveryDialog::pairingDone);
}
DeviceDiscoveryDialog::~DeviceDiscoveryDialog()
{
delete discoveryAgent;
}
void DeviceDiscoveryDialog::addDevice(const QBluetoothDeviceInfo &info)
{
const QString label = info.address().toString() + u' ' + info.name();
const auto items = ui->list->findItems(label, Qt::MatchExactly);
if (items.isEmpty()) {
QListWidgetItem *item = new QListWidgetItem(label);
QBluetoothLocalDevice::Pairing pairingStatus = localDevice->pairingStatus(info.address());
item->setForeground(colorForPairing(pairingStatus));
ui->list->addItem(item);
}
}
void DeviceDiscoveryDialog::startScan()
{
discoveryAgent->start();
ui->scan->setVisible(false);
ui->stopScan->setVisible(true);
}
void DeviceDiscoveryDialog::stopScan()
{
discoveryAgent->stop();
scanFinished();
}
void DeviceDiscoveryDialog::scanFinished()
{
ui->scan->setVisible(true);
ui->stopScan->setVisible(false);
}
void DeviceDiscoveryDialog::itemActivated(QListWidgetItem *item)
{
const QString text = item->text();
const auto 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)
{
ui->power->setChecked(mode != QBluetoothLocalDevice::HostPoweredOff);
ui->discoverable->setChecked(mode == QBluetoothLocalDevice::HostDiscoverable);
const 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();
const auto 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)
{
const auto items = ui->list->findItems(address.toString(), Qt::MatchContains);
const QColor color = colorForPairing(pairing);
for (auto *item : items)
item->setForeground(color);
}
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