dialog.cpp Example File

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** Copyright (C) 2012 Denis Shienkov <denis.shienkov@gmail.com>
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#include "dialog.h"
#include <QLabel>
#include <QLineEdit>
#include <QComboBox>
#include <QSpinBox>
#include <QPushButton>
#include <QGridLayout>
#include <QtSerialPort/QSerialPortInfo>
QT_USE_NAMESPACE
Dialog::Dialog(QWidget *parent)
    : QDialog(parent)
    , transactionCount(0)
    , serialPortLabel(new QLabel(tr("Serial port:")))
    , serialPortComboBox(new QComboBox())
    , waitResponseLabel(new QLabel(tr("Wait response, msec:")))
    , waitResponseSpinBox(new QSpinBox())
    , requestLabel(new QLabel(tr("Request:")))
    , requestLineEdit(new QLineEdit(tr("Who are you?")))
    , trafficLabel(new QLabel(tr("No traffic.")))
    , statusLabel(new QLabel(tr("Status: Not running.")))
    , runButton(new QPushButton(tr("Start")))
{
    const auto infos = QSerialPortInfo::availablePorts();
    for (const QSerialPortInfo &info : infos)
        serialPortComboBox->addItem(info.portName());
    waitResponseSpinBox->setRange(0, 10000);
    waitResponseSpinBox->setValue(1000);
    auto mainLayout = new QGridLayout;
    mainLayout->addWidget(serialPortLabel, 0, 0);
    mainLayout->addWidget(serialPortComboBox, 0, 1);
    mainLayout->addWidget(waitResponseLabel, 1, 0);
    mainLayout->addWidget(waitResponseSpinBox, 1, 1);
    mainLayout->addWidget(runButton, 0, 2, 2, 1);
    mainLayout->addWidget(requestLabel, 2, 0);
    mainLayout->addWidget(requestLineEdit, 2, 1, 1, 3);
    mainLayout->addWidget(trafficLabel, 3, 0, 1, 4);
    mainLayout->addWidget(statusLabel, 4, 0, 1, 5);
    setLayout(mainLayout);
    setWindowTitle(tr("Blocking Master"));
    serialPortComboBox->setFocus();
    connect(runButton, &QPushButton::clicked, this, &Dialog::transaction);
    connect(&thread, &MasterThread::response, this, &Dialog::showResponse);
    connect(&thread, &MasterThread::error, this, &Dialog::processError);
    connect(&thread, &MasterThread::timeout, this, &Dialog::processTimeout);
}
void Dialog::transaction()
{
    setControlsEnabled(false);
    statusLabel->setText(tr("Status: Running, connected to port %1.")
                         .arg(serialPortComboBox->currentText()));
    thread.transaction(serialPortComboBox->currentText(),
                       waitResponseSpinBox->value(),
                       requestLineEdit->text());
}
void Dialog::showResponse(const QString &s)
{
    setControlsEnabled(true);
    trafficLabel->setText(tr("Traffic, transaction #%1:"
                             "\n\r-request: %2"
                             "\n\r-response: %3")
                          .arg(++transactionCount).arg(requestLineEdit->text()).arg(s));
}
void Dialog::processError(const QString &s)
{
    setControlsEnabled(true);
    statusLabel->setText(tr("Status: Not running, %1.").arg(s));
    trafficLabel->setText(tr("No traffic."));
}
void Dialog::processTimeout(const QString &s)
{
    setControlsEnabled(true);
    statusLabel->setText(tr("Status: Running, %1.").arg(s));
    trafficLabel->setText(tr("No traffic."));
}
void Dialog::setControlsEnabled(bool enable)
{
    runButton->setEnabled(enable);
    serialPortComboBox->setEnabled(enable);
    waitResponseSpinBox->setEnabled(enable);
    requestLineEdit->setEnabled(enable);
}