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 <QComboBox>
  #include <QGridLayout>
  #include <QLabel>
  #include <QLineEdit>
  #include <QPushButton>
  #include <QSerialPortInfo>
  #include <QSpinBox>

  Dialog::Dialog(QWidget *parent) :
      QDialog(parent),
      m_serialPortLabel(new QLabel(tr("Serial port:"))),
      m_serialPortComboBox(new QComboBox),
      m_waitResponseLabel(new QLabel(tr("Wait response, msec:"))),
      m_waitResponseSpinBox(new QSpinBox),
      m_requestLabel(new QLabel(tr("Request:"))),
      m_requestLineEdit(new QLineEdit(tr("Who are you?"))),
      m_trafficLabel(new QLabel(tr("No traffic."))),
      m_statusLabel(new QLabel(tr("Status: Not running."))),
      m_runButton(new QPushButton(tr("Start")))
  {
      const auto infos = QSerialPortInfo::availablePorts();
      for (const QSerialPortInfo &info : infos)
          m_serialPortComboBox->addItem(info.portName());

      m_waitResponseSpinBox->setRange(0, 10000);
      m_waitResponseSpinBox->setValue(1000);

      auto mainLayout = new QGridLayout;
      mainLayout->addWidget(m_serialPortLabel, 0, 0);
      mainLayout->addWidget(m_serialPortComboBox, 0, 1);
      mainLayout->addWidget(m_waitResponseLabel, 1, 0);
      mainLayout->addWidget(m_waitResponseSpinBox, 1, 1);
      mainLayout->addWidget(m_runButton, 0, 2, 2, 1);
      mainLayout->addWidget(m_requestLabel, 2, 0);
      mainLayout->addWidget(m_requestLineEdit, 2, 1, 1, 3);
      mainLayout->addWidget(m_trafficLabel, 3, 0, 1, 4);
      mainLayout->addWidget(m_statusLabel, 4, 0, 1, 5);
      setLayout(mainLayout);

      setWindowTitle(tr("Blocking Master"));
      m_serialPortComboBox->setFocus();

      connect(m_runButton, &QPushButton::clicked, this, &Dialog::transaction);
      connect(&m_thread, &MasterThread::response, this, &Dialog::showResponse);
      connect(&m_thread, &MasterThread::error, this, &Dialog::processError);
      connect(&m_thread, &MasterThread::timeout, this, &Dialog::processTimeout);
  }

  void Dialog::transaction()
  {
      setControlsEnabled(false);
      m_statusLabel->setText(tr("Status: Running, connected to port %1.")
                             .arg(m_serialPortComboBox->currentText()));
      m_thread.transaction(m_serialPortComboBox->currentText(),
                           m_waitResponseSpinBox->value(),
                           m_requestLineEdit->text());
  }

  void Dialog::showResponse(const QString &s)
  {
      setControlsEnabled(true);
      m_trafficLabel->setText(tr("Traffic, transaction #%1:"
                                 "\n\r-request: %2"
                                 "\n\r-response: %3")
                              .arg(++m_transactionCount)
                              .arg(m_requestLineEdit->text())
                              .arg(s));
  }

  void Dialog::processError(const QString &s)
  {
      setControlsEnabled(true);
      m_statusLabel->setText(tr("Status: Not running, %1.").arg(s));
      m_trafficLabel->setText(tr("No traffic."));
  }

  void Dialog::processTimeout(const QString &s)
  {
      setControlsEnabled(true);
      m_statusLabel->setText(tr("Status: Running, %1.").arg(s));
      m_trafficLabel->setText(tr("No traffic."));
  }

  void Dialog::setControlsEnabled(bool enable)
  {
      m_runButton->setEnabled(enable);
      m_serialPortComboBox->setEnabled(enable);
      m_waitResponseSpinBox->setEnabled(enable);
      m_requestLineEdit->setEnabled(enable);
  }