1/****************************************************************************
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3** Copyright (C) 2012 Denis Shienkov <denis.shienkov@gmail.com>
4** Copyright (C) 2012 Laszlo Papp <lpapp@kde.org>
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7** This file is part of the QtSerialPort module of the Qt Toolkit.
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51
52#include "mainwindow.h"
53#include "ui_mainwindow.h"
54#include "console.h"
55#include "settingsdialog.h"
56
57#include <QLabel>
58#include <QMessageBox>
59
60//! [0]
61MainWindow::MainWindow(QWidget *parent) :
62 QMainWindow(parent),
63 m_ui(new Ui::MainWindow),
64 m_status(new QLabel),
65 m_console(new Console),
66 m_settings(new SettingsDialog),
67//! [1]
68 m_serial(new QSerialPort(this))
69//! [1]
70{
71//! [0]
72 m_ui->setupUi(this);
73 m_console->setEnabled(false);
74 setCentralWidget(m_console);
75
76 m_ui->actionConnect->setEnabled(true);
77 m_ui->actionDisconnect->setEnabled(false);
78 m_ui->actionQuit->setEnabled(true);
79 m_ui->actionConfigure->setEnabled(true);
80
81 m_ui->statusBar->addWidget(widget: m_status);
82
83 initActionsConnections();
84
85 connect(sender: m_serial, signal: &QSerialPort::errorOccurred, receiver: this, slot: &MainWindow::handleError);
86
87//! [2]
88 connect(sender: m_serial, signal: &QSerialPort::readyRead, receiver: this, slot: &MainWindow::readData);
89//! [2]
90 connect(sender: m_console, signal: &Console::getData, receiver: this, slot: &MainWindow::writeData);
91//! [3]
92}
93//! [3]
94
95MainWindow::~MainWindow()
96{
97 delete m_settings;
98 delete m_ui;
99}
100
101//! [4]
102void MainWindow::openSerialPort()
103{
104 const SettingsDialog::Settings p = m_settings->settings();
105 m_serial->setPortName(p.name);
106 m_serial->setBaudRate(baudRate: p.baudRate);
107 m_serial->setDataBits(p.dataBits);
108 m_serial->setParity(p.parity);
109 m_serial->setStopBits(p.stopBits);
110 m_serial->setFlowControl(p.flowControl);
111 if (m_serial->open(mode: QIODevice::ReadWrite)) {
112 m_console->setEnabled(true);
113 m_console->setLocalEchoEnabled(p.localEchoEnabled);
114 m_ui->actionConnect->setEnabled(false);
115 m_ui->actionDisconnect->setEnabled(true);
116 m_ui->actionConfigure->setEnabled(false);
117 showStatusMessage(message: tr(s: "Connected to %1 : %2, %3, %4, %5, %6")
118 .arg(a: p.name).arg(a: p.stringBaudRate).arg(a: p.stringDataBits)
119 .arg(a: p.stringParity).arg(a: p.stringStopBits).arg(a: p.stringFlowControl));
120 } else {
121 QMessageBox::critical(parent: this, title: tr(s: "Error"), text: m_serial->errorString());
122
123 showStatusMessage(message: tr(s: "Open error"));
124 }
125}
126//! [4]
127
128//! [5]
129void MainWindow::closeSerialPort()
130{
131 if (m_serial->isOpen())
132 m_serial->close();
133 m_console->setEnabled(false);
134 m_ui->actionConnect->setEnabled(true);
135 m_ui->actionDisconnect->setEnabled(false);
136 m_ui->actionConfigure->setEnabled(true);
137 showStatusMessage(message: tr(s: "Disconnected"));
138}
139//! [5]
140
141void MainWindow::about()
142{
143 QMessageBox::about(parent: this, title: tr(s: "About Simple Terminal"),
144 text: tr(s: "The <b>Simple Terminal</b> example demonstrates how to "
145 "use the Qt Serial Port module in modern GUI applications "
146 "using Qt, with a menu bar, toolbars, and a status bar."));
147}
148
149//! [6]
150void MainWindow::writeData(const QByteArray &data)
151{
152 m_serial->write(data);
153}
154//! [6]
155
156//! [7]
157void MainWindow::readData()
158{
159 const QByteArray data = m_serial->readAll();
160 m_console->putData(data);
161}
162//! [7]
163
164//! [8]
165void MainWindow::handleError(QSerialPort::SerialPortError error)
166{
167 if (error == QSerialPort::ResourceError) {
168 QMessageBox::critical(parent: this, title: tr(s: "Critical Error"), text: m_serial->errorString());
169 closeSerialPort();
170 }
171}
172//! [8]
173
174void MainWindow::initActionsConnections()
175{
176 connect(sender: m_ui->actionConnect, signal: &QAction::triggered, receiver: this, slot: &MainWindow::openSerialPort);
177 connect(sender: m_ui->actionDisconnect, signal: &QAction::triggered, receiver: this, slot: &MainWindow::closeSerialPort);
178 connect(sender: m_ui->actionQuit, signal: &QAction::triggered, receiver: this, slot: &MainWindow::close);
179 connect(sender: m_ui->actionConfigure, signal: &QAction::triggered, receiver: m_settings, slot: &SettingsDialog::show);
180 connect(sender: m_ui->actionClear, signal: &QAction::triggered, receiver: m_console, slot: &Console::clear);
181 connect(sender: m_ui->actionAbout, signal: &QAction::triggered, receiver: this, slot: &MainWindow::about);
182 connect(sender: m_ui->actionAboutQt, signal: &QAction::triggered, qApp, slot: &QApplication::aboutQt);
183}
184
185void MainWindow::showStatusMessage(const QString &message)
186{
187 m_status->setText(message);
188}
189

source code of qtserialport/examples/serialport/terminal/mainwindow.cpp