mainwindow.cpp

/****************************************************************************
**
** Copyright (C) 2012 Denis Shienkov <denis.shienkov@gmail.com>
** Copyright (C) 2012 Laszlo Papp <lpapp@kde.org>
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtSerialPort module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** use the contact form at http://qt.digia.com/contact-us.
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "console.h"
#include "settingsdialog.h"

#include <QMessageBox>
#include <QtSerialPort/QSerialPort>

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    console = new Console;
    console->setEnabled(false);
    setCentralWidget(console);
    serial = new QSerialPort(this);
    settings = new SettingsDialog;

    ui->actionConnect->setEnabled(true);
    ui->actionDisconnect->setEnabled(false);
    ui->actionQuit->setEnabled(true);
    ui->actionConfigure->setEnabled(true);

    initActionsConnections();

    connect(serial, SIGNAL(error(QSerialPort::SerialPortError)), this,
            SLOT(handleError(QSerialPort::SerialPortError)));

    connect(serial, SIGNAL(readyRead()), this, SLOT(readData()));
    connect(console, SIGNAL(getData(QByteArray)), this, SLOT(writeData(QByteArray)));
}

MainWindow::~MainWindow()
{
    delete settings;
    delete ui;
}

void MainWindow::openSerialPort()
{
    SettingsDialog::Settings p = settings->settings();
    serial->setPortName(p.name);
    if (serial->open(QIODevice::ReadWrite)) {
        if (serial->setBaudRate(p.baudRate)
                && serial->setDataBits(p.dataBits)
                && serial->setParity(p.parity)
                && serial->setStopBits(p.stopBits)
                && serial->setFlowControl(p.flowControl)) {

            console->setEnabled(true);
            console->setLocalEchoEnabled(p.localEchoEnabled);
            ui->actionConnect->setEnabled(false);
            ui->actionDisconnect->setEnabled(true);
            ui->actionConfigure->setEnabled(false);
            ui->statusBar->showMessage(tr("Connected to %1 : %2, %3, %4, %5, %6")
                                       .arg(p.name).arg(p.stringBaudRate).arg(p.stringDataBits)
                                       .arg(p.stringParity).arg(p.stringStopBits).arg(p.stringFlowControl));

        } else {
            serial->close();
            QMessageBox::critical(this, tr("Error"), serial->errorString());

            ui->statusBar->showMessage(tr("Open error"));
        }
    } else {
        QMessageBox::critical(this, tr("Error"), serial->errorString());

        ui->statusBar->showMessage(tr("Configure error"));
    }
}

void MainWindow::closeSerialPort()
{
    serial->close();
    console->setEnabled(false);
    ui->actionConnect->setEnabled(true);
    ui->actionDisconnect->setEnabled(false);
    ui->actionConfigure->setEnabled(true);
    ui->statusBar->showMessage(tr("Disconnected"));
}

void MainWindow::about()
{
    QMessageBox::about(this, tr("About Simple Terminal"),
                       tr("The <b>Simple Terminal</b> example demonstrates how to "
                          "use the Qt Serial Port module in modern GUI applications "
                          "using Qt, with a menu bar, toolbars, and a status bar."));
}

void MainWindow::writeData(const QByteArray &data)
{
    serial->write(data);
}

void MainWindow::readData()
{
    QByteArray data = serial->readAll();
    console->putData(data);
}

void MainWindow::handleError(QSerialPort::SerialPortError error)
{
    if (error == QSerialPort::ResourceError) {
        QMessageBox::critical(this, tr("Critical Error"), serial->errorString());
        closeSerialPort();
    }
}

void MainWindow::initActionsConnections()
{
    connect(ui->actionConnect, SIGNAL(triggered()), this, SLOT(openSerialPort()));
    connect(ui->actionDisconnect, SIGNAL(triggered()), this, SLOT(closeSerialPort()));
    connect(ui->actionQuit, SIGNAL(triggered()), this, SLOT(close()));
    connect(ui->actionConfigure, SIGNAL(triggered()), settings, SLOT(show()));
    connect(ui->actionClear, SIGNAL(triggered()), console, SLOT(clear()));
    connect(ui->actionAbout, SIGNAL(triggered()), this, SLOT(about()));
    connect(ui->actionAboutQt, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
}