diff options
Diffstat (limited to 'examples/serialport/terminal/mainwindow.cpp')
| -rw-r--r-- | examples/serialport/terminal/mainwindow.cpp | 109 |
1 files changed, 51 insertions, 58 deletions
diff --git a/examples/serialport/terminal/mainwindow.cpp b/examples/serialport/terminal/mainwindow.cpp index e8ac9d7..d8c0212 100644 --- a/examples/serialport/terminal/mainwindow.cpp +++ b/examples/serialport/terminal/mainwindow.cpp @@ -1,53 +1,6 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Denis Shienkov <denis.shienkov@gmail.com> -** Copyright (C) 2012 Laszlo Papp <lpapp@kde.org> -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtSerialPort 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2012 Denis Shienkov <denis.shienkov@gmail.com> +// Copyright (C) 2012 Laszlo Papp <lpapp@kde.org> +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause #include "mainwindow.h" #include "ui_mainwindow.h" @@ -56,19 +9,25 @@ #include <QLabel> #include <QMessageBox> +#include <QTimer> + +#include <chrono> + +static constexpr std::chrono::seconds kWriteTimeout = std::chrono::seconds{5}; //! [0] MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), m_ui(new Ui::MainWindow), +//! [0] m_status(new QLabel), m_console(new Console), - m_settings(new SettingsDialog), + m_settings(new SettingsDialog(this)), + m_timer(new QTimer(this)), //! [1] m_serial(new QSerialPort(this)) -//! [1] { -//! [0] +//! [1] m_ui->setupUi(this); m_console->setEnabled(false); setCentralWidget(m_console); @@ -83,9 +42,12 @@ MainWindow::MainWindow(QWidget *parent) : initActionsConnections(); connect(m_serial, &QSerialPort::errorOccurred, this, &MainWindow::handleError); + connect(m_timer, &QTimer::timeout, this, &MainWindow::handleWriteTimeout); + m_timer->setSingleShot(true); //! [2] connect(m_serial, &QSerialPort::readyRead, this, &MainWindow::readData); + connect(m_serial, &QSerialPort::bytesWritten, this, &MainWindow::handleBytesWritten); //! [2] connect(m_console, &Console::getData, this, &MainWindow::writeData); //! [3] @@ -115,8 +77,8 @@ void MainWindow::openSerialPort() m_ui->actionDisconnect->setEnabled(true); m_ui->actionConfigure->setEnabled(false); showStatusMessage(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)); + .arg(p.name, p.stringBaudRate, p.stringDataBits, + p.stringParity, p.stringStopBits, p.stringFlowControl)); } else { QMessageBox::critical(this, tr("Error"), m_serial->errorString()); @@ -140,8 +102,8 @@ void MainWindow::closeSerialPort() void MainWindow::about() { - QMessageBox::about(this, tr("About Simple Terminal"), - tr("The <b>Simple Terminal</b> example demonstrates how to " + QMessageBox::about(this, tr("About Serial Terminal"), + tr("The <b>Serial 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.")); } @@ -149,7 +111,16 @@ void MainWindow::about() //! [6] void MainWindow::writeData(const QByteArray &data) { - m_serial->write(data); + const qint64 written = m_serial->write(data); + if (written == data.size()) { + m_bytesToWrite += written; + m_timer->start(kWriteTimeout); + } else { + const QString error = tr("Failed to write all data to port %1.\n" + "Error: %2").arg(m_serial->portName(), + m_serial->errorString()); + showWriteError(error); + } } //! [6] @@ -171,6 +142,23 @@ void MainWindow::handleError(QSerialPort::SerialPortError error) } //! [8] +//! [9] +void MainWindow::handleBytesWritten(qint64 bytes) +{ + m_bytesToWrite -= bytes; + if (m_bytesToWrite == 0) + m_timer->stop(); +} +//! [9] + +void MainWindow::handleWriteTimeout() +{ + const QString error = tr("Write operation timed out for port %1.\n" + "Error: %2").arg(m_serial->portName(), + m_serial->errorString()); + showWriteError(error); +} + void MainWindow::initActionsConnections() { connect(m_ui->actionConnect, &QAction::triggered, this, &MainWindow::openSerialPort); @@ -186,3 +174,8 @@ void MainWindow::showStatusMessage(const QString &message) { m_status->setText(message); } + +void MainWindow::showWriteError(const QString &message) +{ + QMessageBox::warning(this, tr("Warning"), message); +} |