# HG changeset patch
# User Hasan Yavuz ÖZDERYA <hy@ozderya.net>
# Date 2015-05-23 20:55:10
# Node ID 6a311d7228183a7d01dd856c8a2526f6c8a27e2f
# Parent  acee6b77993ce1f751a415868cdccbbdd4cc8046

moved port settings tab to a separate class, PortControl

diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,10 +49,11 @@ endif (QWT_USE_STATIC)
 include_directories(${QWT_INCLUDE_DIR})
 
 # wrap UI files
-qt5_wrap_ui(UI_FILES mainwindow.ui about_dialog.ui)
+qt5_wrap_ui(UI_FILES mainwindow.ui portcontrol.ui about_dialog.ui)
 
 # Tell CMake to create the helloworld executable
-add_executable(serialplot main.cpp mainwindow.cpp customcheckablebutton.cpp ${UI_FILES})
+add_executable(serialplot main.cpp mainwindow.cpp portcontrol.cpp
+  customcheckablebutton.cpp ${UI_FILES})
 
 # Use the Widgets module from Qt 5.
 target_link_libraries(serialplot ${QWT_LIBRARY})
diff --git a/mainwindow.cpp b/mainwindow.cpp
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -19,7 +19,6 @@
 
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
-#include <QSerialPortInfo>
 #include <QByteArray>
 #include <QApplication>
 #include <QtDebug>
@@ -31,9 +30,13 @@
 
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
-    ui(new Ui::MainWindow)
+    ui(new Ui::MainWindow),
+    portControl(&serialPort)
 {
     ui->setupUi(this);
+    ui->tabWidget->insertTab(0, &portControl, "Port");
+    ui->tabWidget->setCurrentIndex(0);
+
     setupAboutDialog();
 
     // init UI signals
@@ -42,23 +45,11 @@ MainWindow::MainWindow(QWidget *parent) 
     QObject::connect(ui->actionHelpAbout, &QAction::triggered,
               &aboutDialog, &QWidget::show);
 
-    // port tab signals
-    QObject::connect(ui->pbReloadPorts, &QPushButton::clicked,
-                     this, &MainWindow::loadPortList);
-
-    QObject::connect(ui->pbOpenPort, &QPushButton::clicked,
-                     this, &MainWindow::togglePort);
-
-    QObject::connect(this, &MainWindow::portToggled,
+    QObject::connect(&portControl, &PortControl::portToggled,
                      this, &MainWindow::onPortToggled);
 
-    QObject::connect(ui->cbPortList,
-                     SELECT<const QString&>::OVERLOAD_OF(&QComboBox::activated),
-                     this, &MainWindow::selectPort);
-
-    QObject::connect(ui->cbBaudRate,
-                     SELECT<const QString&>::OVERLOAD_OF(&QComboBox::activated),
-                     this, &MainWindow::selectBaudRate);
+    QObject::connect(&portControl, &PortControl::skipByteRequested,
+                     this, &MainWindow::skipByte);
 
     QObject::connect(ui->spNumOfSamples, SELECT<int>::OVERLOAD_OF(&QSpinBox::valueChanged),
                      this, &MainWindow::onNumOfSamplesChanged);
@@ -93,58 +84,10 @@ MainWindow::MainWindow(QWidget *parent) 
     QObject::connect(&numberFormatButtons, SIGNAL(buttonToggled(int, bool)),
                      this, SLOT(onNumberFormatButtonToggled(int, bool)));
 
-    // setup parity selection buttons
-    parityButtons.addButton(ui->rbNoParity, (int) QSerialPort::NoParity);
-    parityButtons.addButton(ui->rbEvenParity, (int) QSerialPort::EvenParity);
-    parityButtons.addButton(ui->rbOddParity, (int) QSerialPort::OddParity);
-
-    QObject::connect(&parityButtons,
-                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),
-                     this, &MainWindow::selectParity);
-
-    // setup data bits selection buttons
-    dataBitsButtons.addButton(ui->rb8Bits, (int) QSerialPort::Data8);
-    dataBitsButtons.addButton(ui->rb7Bits, (int) QSerialPort::Data7);
-    dataBitsButtons.addButton(ui->rb6Bits, (int) QSerialPort::Data6);
-    dataBitsButtons.addButton(ui->rb5Bits, (int) QSerialPort::Data5);
-
-    QObject::connect(&dataBitsButtons,
-                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),
-                     this, &MainWindow::selectDataBits);
-
-    // setup stop bits selection buttons
-    stopBitsButtons.addButton(ui->rb1StopBit, (int) QSerialPort::OneStop);
-    stopBitsButtons.addButton(ui->rb2StopBit, (int) QSerialPort::TwoStop);
-
-    QObject::connect(&stopBitsButtons,
-                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),
-                     this, &MainWindow::selectStopBits);
-
-    // setup flow control selection buttons
-    flowControlButtons.addButton(ui->rbNoFlowControl,
-                                 (int) QSerialPort::NoFlowControl);
-    flowControlButtons.addButton(ui->rbHardwareControl,
-                                 (int) QSerialPort::HardwareControl);
-    flowControlButtons.addButton(ui->rbSoftwareControl,
-                                 (int) QSerialPort::SoftwareControl);
-
-    QObject::connect(&flowControlButtons,
-                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),
-                     this, &MainWindow::selectFlowControl);
-
     // init port signals
     QObject::connect(&(this->serialPort), SIGNAL(error(QSerialPort::SerialPortError)),
                      this, SLOT(onPortError(QSerialPort::SerialPortError)));
 
-    // init skip byte button
-    skipByteRequested = false;
-    QObject::connect(ui->pbSkipByte, &QPushButton::clicked,
-                     this, &MainWindow::skipByte);
-
-    loadPortList();
-    loadBaudRateList();
-    ui->cbBaudRate->setCurrentIndex(ui->cbBaudRate->findText("9600"));
-
     // set limits for axis limit boxes
     ui->spYmin->setRange((-1) * std::numeric_limits<double>::max(),
                          std::numeric_limits<double>::max());
@@ -220,150 +163,8 @@ void MainWindow::setupAboutDialog()
     uiAboutDialog.lbAbout->setText(aboutText);
 }
 
-void MainWindow::loadPortList()
-{
-    QString currentSelection = ui->cbPortList->currentText();
-
-    ui->cbPortList->clear();
-
-    for (auto port : QSerialPortInfo::availablePorts())
-    {
-        ui->cbPortList->addItem(port.portName());
-    }
-
-    // find current selection in the new list, maybe it doesn't exist anymore?
-    int currentSelectionIndex = ui->cbPortList->findText(currentSelection);
-    if (currentSelectionIndex >= 0)
-    {
-        ui->cbPortList->setCurrentIndex(currentSelectionIndex);
-    }
-    else // our port doesn't exist anymore, close port if it's open
-    {
-        if (serialPort.isOpen()) togglePort();
-    }
-}
-
-void MainWindow::loadBaudRateList()
-{
-    ui->cbBaudRate->clear();
-
-    for (auto baudRate : QSerialPortInfo::standardBaudRates())
-    {
-        ui->cbBaudRate->addItem(QString::number(baudRate));
-    }
-}
-
-void MainWindow::togglePort()
-{
-    if (serialPort.isOpen())
-    {
-        serialPort.close();
-        qDebug() << "Port closed, " << serialPort.portName();
-        emit portToggled(false);
-    }
-    else
-    {
-        serialPort.setPortName(ui->cbPortList->currentText());
-
-        // open port
-        if (serialPort.open(QIODevice::ReadWrite))
-        {
-            qDebug() << "Port opened, " << serialPort.portName();
-            emit portToggled(true);
-
-            // set baud rate
-            if (!serialPort.setBaudRate(ui->cbBaudRate->currentText().toInt()))
-            {
-                qDebug() << "Set baud rate failed during port opening: "
-                         << serialPort.error();
-            }
-        }
-        else
-        {
-            qDebug() << "Port open error: " << serialPort.error();
-        }
-    }
-}
-
-void MainWindow::selectPort(QString portName)
-{
-    // has selection actually changed
-    if (portName != serialPort.portName())
-    {
-        // if another port is already open, close it by toggling
-        if (serialPort.isOpen())
-        {
-            togglePort();
-
-            // open new selection by toggling
-            togglePort();
-        }
-    }
-}
-
-void MainWindow::selectBaudRate(QString baudRate)
-{
-    if (serialPort.isOpen())
-    {
-        if (!serialPort.setBaudRate(baudRate.toInt()))
-        {
-            qDebug() << "Set baud rate failed during select: "
-                     << serialPort.error();
-        }
-        else
-        {
-            qDebug() << "Baud rate changed: " << serialPort.baudRate();
-        }
-    }
-}
-
-void MainWindow::selectParity(int parity)
-{
-    if (serialPort.isOpen())
-    {
-        if(!serialPort.setParity((QSerialPort::Parity) parity))
-        {
-            qDebug() << "Set parity failed: " << serialPort.error();
-        }
-    }
-}
-
-void MainWindow::selectDataBits(int dataBits)
-{
-    if (serialPort.isOpen())
-    {
-        if(!serialPort.setDataBits((QSerialPort::DataBits) dataBits))
-        {
-            qDebug() << "Set data bits failed: " << serialPort.error();
-        }
-    }
-}
-
-void MainWindow::selectStopBits(int stopBits)
-{
-    if (serialPort.isOpen())
-    {
-        if(!serialPort.setStopBits((QSerialPort::StopBits) stopBits))
-        {
-            qDebug() << "Set stop bits failed: " << serialPort.error();
-        }
-    }
-}
-
-void MainWindow::selectFlowControl(int flowControl)
-{
-    if (serialPort.isOpen())
-    {
-        if(!serialPort.setFlowControl((QSerialPort::FlowControl) flowControl))
-        {
-            qDebug() << "Set flow control failed: " << serialPort.error();
-        }
-    }
-}
-
 void MainWindow::onPortToggled(bool open)
 {
-    ui->pbOpenPort->setChecked(open);
     // make sure demo mode is disabled
     if (open && isDemoRunning()) enableDemo(false);
     ui->actionDemoMode->setEnabled(!open);
@@ -459,9 +260,9 @@ void MainWindow::onPortError(QSerialPort
             if (serialPort.isOpen())
             {
                 qDebug() << "Closing port on resource error: " << serialPort.portName();
-                togglePort();
+                portControl.togglePort();
             }
-            loadPortList();
+            portControl.loadPortList();
             break;
         default:
             qDebug() << "Unhandled port error: " << error;
@@ -659,14 +460,14 @@ void MainWindow::selectNumberFormat(Numb
         QObject::disconnect(&(this->serialPort), &QSerialPort::readyRead, 0, 0);
         QObject::connect(&(this->serialPort), &QSerialPort::readyRead,
                          this, &MainWindow::onDataReadyASCII);
-        ui->pbSkipByte->setDisabled(true);
+        portControl.enableSkipByte();
     }
     else
     {
         QObject::disconnect(&(this->serialPort), &QSerialPort::readyRead, 0, 0);
         QObject::connect(&(this->serialPort), &QSerialPort::readyRead,
                          this, &MainWindow::onDataReady);
-        ui->pbSkipByte->setEnabled(true);
+        portControl.enableSkipByte(false);
     }
 }
 
diff --git a/mainwindow.h b/mainwindow.h
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -31,6 +31,7 @@
 #include <QColor>
 #include <qwt_plot_curve.h>
 
+#include "portcontrol.h"
 #include "ui_about_dialog.h"
 
 namespace Ui {
@@ -60,13 +61,10 @@ private:
 
     Ui::MainWindow *ui;
     QButtonGroup numberFormatButtons;
-    QButtonGroup parityButtons;
-    QButtonGroup dataBitsButtons;
-    QButtonGroup stopBitsButtons;
-    QButtonGroup flowControlButtons;
 
     QDialog aboutDialog;
     void setupAboutDialog();
+    PortControl portControl;
 
     QSerialPort serialPort;
 
@@ -98,17 +96,7 @@ private:
     QColor makeColor(unsigned int channelIndex);
 
 private slots:
-    void loadPortList();
-    void loadBaudRateList();
-    void togglePort();
-    void selectPort(QString portName);
     void onPortToggled(bool open);
-    void selectBaudRate(QString baudRate);
-    void selectParity(int parity); // parity must be one of QSerialPort::Parity
-    void selectDataBits(int dataBits); // bits must be one of QSerialPort::DataBits
-    void selectStopBits(int stopBits); // stopBits must be one of QSerialPort::StopBits
-    void selectFlowControl(int flowControl); // flowControl must be one of QSerialPort::FlowControl
-
     void onDataReady();      // used with binary number formats
     void onDataReadyASCII(); // used with ASCII number format
     void onPortError(QSerialPort::SerialPortError error);
@@ -127,9 +115,6 @@ private slots:
 
     void demoTimerTimeout();
     void enableDemo(bool enabled);
-
-signals:
-    void portToggled(bool open);
 };
 
 #endif // MAINWINDOW_H
diff --git a/mainwindow.ui b/mainwindow.ui
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -51,296 +51,6 @@
       <property name="movable">
        <bool>false</bool>
       </property>
-      <widget class="QWidget" name="tabPort">
-       <attribute name="title">
-        <string>Port</string>
-       </attribute>
-       <layout class="QHBoxLayout" name="horizontalLayout">
-        <item>
-         <layout class="QVBoxLayout" name="verticalLayout_3">
-          <item>
-           <layout class="QGridLayout" name="gridLayout">
-            <item row="0" column="0">
-             <widget class="QLabel" name="label">
-              <property name="text">
-               <string>Port:</string>
-              </property>
-             </widget>
-            </item>
-            <item row="0" column="1">
-             <widget class="QComboBox" name="cbPortList">
-              <property name="sizePolicy">
-               <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
-                <horstretch>0</horstretch>
-                <verstretch>0</verstretch>
-               </sizepolicy>
-              </property>
-              <property name="editable">
-               <bool>true</bool>
-              </property>
-             </widget>
-            </item>
-            <item row="1" column="1">
-             <widget class="QComboBox" name="cbBaudRate">
-              <property name="inputMethodHints">
-               <set>Qt::ImhPreferNumbers</set>
-              </property>
-              <property name="editable">
-               <bool>true</bool>
-              </property>
-             </widget>
-            </item>
-            <item row="1" column="0">
-             <widget class="QLabel" name="label_2">
-              <property name="text">
-               <string>Baud Rate:</string>
-              </property>
-             </widget>
-            </item>
-            <item row="0" column="2">
-             <widget class="QPushButton" name="pbReloadPorts">
-              <property name="sizePolicy">
-               <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
-                <horstretch>0</horstretch>
-                <verstretch>0</verstretch>
-               </sizepolicy>
-              </property>
-              <property name="maximumSize">
-               <size>
-                <width>30</width>
-                <height>16777215</height>
-               </size>
-              </property>
-              <property name="text">
-               <string>↺</string>
-              </property>
-             </widget>
-            </item>
-           </layout>
-          </item>
-          <item>
-           <layout class="QHBoxLayout" name="horizontalLayout_2">
-            <item>
-             <widget class="QFrame" name="frame">
-              <property name="frameShape">
-               <enum>QFrame::NoFrame</enum>
-              </property>
-              <layout class="QVBoxLayout" name="verticalLayout_5">
-               <item>
-                <widget class="QRadioButton" name="rbNoParity">
-                 <property name="text">
-                  <string>No Parity</string>
-                 </property>
-                 <property name="checked">
-                  <bool>true</bool>
-                 </property>
-                </widget>
-               </item>
-               <item>
-                <widget class="QRadioButton" name="rbOddParity">
-                 <property name="text">
-                  <string>Odd Parity</string>
-                 </property>
-                </widget>
-               </item>
-               <item>
-                <widget class="QRadioButton" name="rbEvenParity">
-                 <property name="text">
-                  <string>Even Parity</string>
-                 </property>
-                </widget>
-               </item>
-               <item>
-                <spacer name="verticalSpacer_2">
-                 <property name="orientation">
-                  <enum>Qt::Vertical</enum>
-                 </property>
-                 <property name="sizeHint" stdset="0">
-                  <size>
-                   <width>20</width>
-                   <height>2</height>
-                  </size>
-                 </property>
-                </spacer>
-               </item>
-              </layout>
-             </widget>
-            </item>
-            <item>
-             <widget class="QFrame" name="frame_3">
-              <layout class="QVBoxLayout" name="verticalLayout_7">
-               <item>
-                <widget class="QRadioButton" name="rb8Bits">
-                 <property name="text">
-                  <string>8 bits</string>
-                 </property>
-                 <property name="checked">
-                  <bool>true</bool>
-                 </property>
-                </widget>
-               </item>
-               <item>
-                <widget class="QRadioButton" name="rb7Bits">
-                 <property name="text">
-                  <string>7 bits</string>
-                 </property>
-                </widget>
-               </item>
-               <item>
-                <widget class="QRadioButton" name="rb6Bits">
-                 <property name="text">
-                  <string>6 bits</string>
-                 </property>
-                </widget>
-               </item>
-               <item>
-                <widget class="QRadioButton" name="rb5Bits">
-                 <property name="text">
-                  <string>5 bits</string>
-                 </property>
-                </widget>
-               </item>
-              </layout>
-             </widget>
-            </item>
-            <item>
-             <widget class="QFrame" name="frame_4">
-              <layout class="QVBoxLayout" name="verticalLayout">
-               <item>
-                <widget class="QRadioButton" name="rb1StopBit">
-                 <property name="text">
-                  <string>1 Stop Bit</string>
-                 </property>
-                 <property name="checked">
-                  <bool>true</bool>
-                 </property>
-                </widget>
-               </item>
-               <item>
-                <widget class="QRadioButton" name="rb2StopBit">
-                 <property name="text">
-                  <string>2 Stop Bit</string>
-                 </property>
-                </widget>
-               </item>
-               <item>
-                <spacer name="verticalSpacer_4">
-                 <property name="orientation">
-                  <enum>Qt::Vertical</enum>
-                 </property>
-                 <property name="sizeHint" stdset="0">
-                  <size>
-                   <width>20</width>
-                   <height>2</height>
-                  </size>
-                 </property>
-                </spacer>
-               </item>
-              </layout>
-             </widget>
-            </item>
-            <item>
-             <widget class="QFrame" name="frame_2">
-              <layout class="QVBoxLayout" name="verticalLayout_6">
-               <item>
-                <widget class="QRadioButton" name="rbNoFlowControl">
-                 <property name="text">
-                  <string>No Flow Control</string>
-                 </property>
-                 <property name="checked">
-                  <bool>true</bool>
-                 </property>
-                </widget>
-               </item>
-               <item>
-                <widget class="QRadioButton" name="rbHardwareControl">
-                 <property name="text">
-                  <string>Hardware Control</string>
-                 </property>
-                </widget>
-               </item>
-               <item>
-                <widget class="QRadioButton" name="rbSoftwareControl">
-                 <property name="text">
-                  <string>Software Control</string>
-                 </property>
-                </widget>
-               </item>
-               <item>
-                <spacer name="verticalSpacer_5">
-                 <property name="orientation">
-                  <enum>Qt::Vertical</enum>
-                 </property>
-                 <property name="sizeHint" stdset="0">
-                  <size>
-                   <width>20</width>
-                   <height>2</height>
-                  </size>
-                 </property>
-                </spacer>
-               </item>
-              </layout>
-             </widget>
-            </item>
-           </layout>
-          </item>
-         </layout>
-        </item>
-        <item>
-         <spacer name="horizontalSpacer">
-          <property name="orientation">
-           <enum>Qt::Horizontal</enum>
-          </property>
-          <property name="sizeHint" stdset="0">
-           <size>
-            <width>10000</width>
-            <height>20</height>
-           </size>
-          </property>
-         </spacer>
-        </item>
-        <item>
-         <layout class="QVBoxLayout" name="verticalLayout_4">
-          <item>
-           <widget class="CustomCheckableButton" name="pbOpenPort">
-            <property name="minimumSize">
-             <size>
-              <width>0</width>
-              <height>50</height>
-             </size>
-            </property>
-            <property name="text">
-             <string>Open</string>
-            </property>
-            <property name="checkable">
-             <bool>true</bool>
-            </property>
-           </widget>
-          </item>
-          <item>
-           <widget class="QPushButton" name="pbSkipByte">
-            <property name="text">
-             <string>Skip Byte</string>
-            </property>
-           </widget>
-          </item>
-          <item>
-           <spacer name="verticalSpacer">
-            <property name="orientation">
-             <enum>Qt::Vertical</enum>
-            </property>
-            <property name="sizeHint" stdset="0">
-             <size>
-              <width>20</width>
-              <height>40</height>
-             </size>
-            </property>
-           </spacer>
-          </item>
-         </layout>
-        </item>
-       </layout>
-      </widget>
       <widget class="QWidget" name="tabDataFormat">
        <attribute name="title">
         <string>Data Format</string>
@@ -684,11 +394,6 @@
    <header>qwt_plot.h</header>
    <container>1</container>
   </customwidget>
-  <customwidget>
-   <class>CustomCheckableButton</class>
-   <extends>QPushButton</extends>
-   <header>customcheckablebutton.h</header>
-  </customwidget>
  </customwidgets>
  <resources/>
  <connections/>
diff --git a/portcontrol.cpp b/portcontrol.cpp
new file mode 100644
--- /dev/null
+++ b/portcontrol.cpp
@@ -0,0 +1,247 @@
+/*
+  Copyright © 2015 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  serialplot is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "portcontrol.h"
+#include "ui_portcontrol.h"
+
+#include <QSerialPortInfo>
+#include <QtDebug>
+#include "utils.h"
+
+PortControl::PortControl(QSerialPort* port, QWidget* parent) :
+    QWidget(parent),
+    ui(new Ui::PortControl)
+{
+    ui->setupUi(this);
+
+    serialPort = port;
+
+    QObject::connect(ui->pbReloadPorts, &QPushButton::clicked,
+                     this, &PortControl::loadPortList);
+
+    QObject::connect(ui->pbOpenPort, &QPushButton::clicked,
+                     this, &PortControl::togglePort);
+
+    QObject::connect(ui->cbPortList,
+                     SELECT<const QString&>::OVERLOAD_OF(&QComboBox::activated),
+                     this, &PortControl::selectPort);
+
+    QObject::connect(ui->cbBaudRate,
+                     SELECT<const QString&>::OVERLOAD_OF(&QComboBox::activated),
+                     this, &PortControl::selectBaudRate);
+
+    // setup parity selection buttons
+    parityButtons.addButton(ui->rbNoParity, (int) QSerialPort::NoParity);
+    parityButtons.addButton(ui->rbEvenParity, (int) QSerialPort::EvenParity);
+    parityButtons.addButton(ui->rbOddParity, (int) QSerialPort::OddParity);
+
+    QObject::connect(&parityButtons,
+                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),
+                     this, &PortControl::selectParity);
+
+    // setup data bits selection buttons
+    dataBitsButtons.addButton(ui->rb8Bits, (int) QSerialPort::Data8);
+    dataBitsButtons.addButton(ui->rb7Bits, (int) QSerialPort::Data7);
+    dataBitsButtons.addButton(ui->rb6Bits, (int) QSerialPort::Data6);
+    dataBitsButtons.addButton(ui->rb5Bits, (int) QSerialPort::Data5);
+
+    QObject::connect(&dataBitsButtons,
+                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),
+                     this, &PortControl::selectDataBits);
+
+    // setup stop bits selection buttons
+    stopBitsButtons.addButton(ui->rb1StopBit, (int) QSerialPort::OneStop);
+    stopBitsButtons.addButton(ui->rb2StopBit, (int) QSerialPort::TwoStop);
+
+    QObject::connect(&stopBitsButtons,
+                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),
+                     this, &PortControl::selectStopBits);
+
+    // setup flow control selection buttons
+    flowControlButtons.addButton(ui->rbNoFlowControl,
+                                 (int) QSerialPort::NoFlowControl);
+    flowControlButtons.addButton(ui->rbHardwareControl,
+                                 (int) QSerialPort::HardwareControl);
+    flowControlButtons.addButton(ui->rbSoftwareControl,
+                                 (int) QSerialPort::SoftwareControl);
+
+    QObject::connect(&flowControlButtons,
+                     SELECT<int>::OVERLOAD_OF(&QButtonGroup::buttonClicked),
+                     this, &PortControl::selectFlowControl);
+
+    // init skip byte button
+    QObject::connect(ui->pbSkipByte, &QPushButton::clicked,
+                     [this](){emit skipByteRequested();});
+
+    loadPortList();
+    loadBaudRateList();
+    ui->cbBaudRate->setCurrentIndex(ui->cbBaudRate->findText("9600"));
+}
+
+PortControl::~PortControl()
+{
+    delete ui;
+}
+
+void PortControl::loadPortList()
+{
+    QString currentSelection = ui->cbPortList->currentText();
+
+    ui->cbPortList->clear();
+
+    for (auto port : QSerialPortInfo::availablePorts())
+    {
+        ui->cbPortList->addItem(port.portName());
+    }
+
+    // find current selection in the new list, maybe it doesn't exist anymore?
+    int currentSelectionIndex = ui->cbPortList->findText(currentSelection);
+    if (currentSelectionIndex >= 0)
+    {
+        ui->cbPortList->setCurrentIndex(currentSelectionIndex);
+    }
+    else // our port doesn't exist anymore, close port if it's open
+    {
+        if (serialPort->isOpen()) togglePort();
+    }
+}
+
+void PortControl::loadBaudRateList()
+{
+    ui->cbBaudRate->clear();
+
+    for (auto baudRate : QSerialPortInfo::standardBaudRates())
+    {
+        ui->cbBaudRate->addItem(QString::number(baudRate));
+    }
+}
+
+void PortControl::selectBaudRate(QString baudRate)
+{
+    if (serialPort->isOpen())
+    {
+        if (!serialPort->setBaudRate(baudRate.toInt()))
+        {
+            qDebug() << "Set baud rate failed during select: "
+                     << serialPort->error();
+        }
+        else
+        {
+            qDebug() << "Baud rate changed: " << serialPort->baudRate();
+        }
+    }
+}
+
+void PortControl::selectParity(int parity)
+{
+    if (serialPort->isOpen())
+    {
+        if(!serialPort->setParity((QSerialPort::Parity) parity))
+        {
+            qDebug() << "Set parity failed: " << serialPort->error();
+        }
+    }
+}
+
+void PortControl::selectDataBits(int dataBits)
+{
+    if (serialPort->isOpen())
+    {
+        if(!serialPort->setDataBits((QSerialPort::DataBits) dataBits))
+        {
+            qDebug() << "Set data bits failed: " << serialPort->error();
+        }
+    }
+}
+
+void PortControl::selectStopBits(int stopBits)
+{
+    if (serialPort->isOpen())
+    {
+        if(!serialPort->setStopBits((QSerialPort::StopBits) stopBits))
+        {
+            qDebug() << "Set stop bits failed: " << serialPort->error();
+        }
+    }
+}
+
+void PortControl::selectFlowControl(int flowControl)
+{
+    if (serialPort->isOpen())
+    {
+        if(!serialPort->setFlowControl((QSerialPort::FlowControl) flowControl))
+        {
+            qDebug() << "Set flow control failed: " << serialPort->error();
+        }
+    }
+}
+
+void PortControl::togglePort()
+{
+    if (serialPort->isOpen())
+    {
+        serialPort->close();
+        qDebug() << "Port closed, " << serialPort->portName();
+        emit portToggled(false);
+    }
+    else
+    {
+        serialPort->setPortName(ui->cbPortList->currentText());
+
+        // open port
+        if (serialPort->open(QIODevice::ReadWrite))
+        {
+            qDebug() << "Port opened, " << serialPort->portName();
+            emit portToggled(true);
+
+            // set baud rate
+            if (!serialPort->setBaudRate(ui->cbBaudRate->currentText().toInt()))
+            {
+                qDebug() << "Set baud rate failed during port opening: "
+                         << serialPort->error();
+            }
+        }
+        else
+        {
+            qDebug() << "Port open error: " << serialPort->error();
+        }
+    }
+    ui->pbOpenPort->setChecked(serialPort->isOpen());
+}
+
+void PortControl::selectPort(QString portName)
+{
+    // has selection actually changed
+    if (portName != serialPort->portName())
+    {
+        // if another port is already open, close it by toggling
+        if (serialPort->isOpen())
+        {
+            togglePort();
+
+            // open new selection by toggling
+            togglePort();
+        }
+    }
+}
+
+void PortControl::enableSkipByte(bool enabled)
+{
+    ui->pbSkipByte->setDisabled(enabled);
+}
diff --git a/portcontrol.h b/portcontrol.h
new file mode 100644
--- /dev/null
+++ b/portcontrol.h
@@ -0,0 +1,67 @@
+/*
+  Copyright © 2015 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  serialplot is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef PORTCONTROL_H
+#define PORTCONTROL_H
+
+#include <QWidget>
+#include <QButtonGroup>
+#include <QSerialPort>
+
+namespace Ui {
+class PortControl;
+}
+
+class PortControl : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit PortControl(QSerialPort* port, QWidget* parent = 0);
+    ~PortControl();
+
+    QSerialPort* serialPort;
+
+private:
+    Ui::PortControl *ui;
+
+    QButtonGroup parityButtons;
+    QButtonGroup dataBitsButtons;
+    QButtonGroup stopBitsButtons;
+    QButtonGroup flowControlButtons;
+
+public slots:
+    void loadPortList();
+    void loadBaudRateList();
+    void togglePort();
+    void selectPort(QString portName);
+    void enableSkipByte(bool enabled = true);
+
+    void selectBaudRate(QString baudRate);
+    void selectParity(int parity); // parity must be one of QSerialPort::Parity
+    void selectDataBits(int dataBits); // bits must be one of QSerialPort::DataBits
+    void selectStopBits(int stopBits); // stopBits must be one of QSerialPort::StopBits
+    void selectFlowControl(int flowControl); // flowControl must be one of QSerialPort::FlowControl
+
+signals:
+    void skipByteRequested();
+    void portToggled(bool open);
+};
+
+#endif // PORTCONTROL_H
diff --git a/portcontrol.ui b/portcontrol.ui
new file mode 100644
--- /dev/null
+++ b/portcontrol.ui
@@ -0,0 +1,324 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>PortControl</class>
+ <widget class="QWidget" name="PortControl">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>631</width>
+    <height>213</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QHBoxLayout" name="horizontalLayout">
+   <item>
+    <layout class="QVBoxLayout" name="verticalLayout_3">
+     <item>
+      <layout class="QGridLayout" name="gridLayout">
+       <item row="0" column="0">
+        <widget class="QLabel" name="label">
+         <property name="text">
+          <string>Port:</string>
+         </property>
+        </widget>
+       </item>
+       <item row="0" column="1">
+        <widget class="QComboBox" name="cbPortList">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="editable">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="1">
+        <widget class="QComboBox" name="cbBaudRate">
+         <property name="inputMethodHints">
+          <set>Qt::ImhPreferNumbers</set>
+         </property>
+         <property name="editable">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="0">
+        <widget class="QLabel" name="label_2">
+         <property name="text">
+          <string>Baud Rate:</string>
+         </property>
+        </widget>
+       </item>
+       <item row="0" column="2">
+        <widget class="QPushButton" name="pbReloadPorts">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="maximumSize">
+          <size>
+           <width>30</width>
+           <height>16777215</height>
+          </size>
+         </property>
+         <property name="text">
+          <string>↺</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+     <item>
+      <layout class="QHBoxLayout" name="horizontalLayout_2">
+       <item>
+        <widget class="QFrame" name="frame">
+         <property name="frameShape">
+          <enum>QFrame::NoFrame</enum>
+         </property>
+         <layout class="QVBoxLayout" name="verticalLayout_5">
+          <item>
+           <widget class="QRadioButton" name="rbNoParity">
+            <property name="text">
+             <string>No Parity</string>
+            </property>
+            <property name="checked">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QRadioButton" name="rbOddParity">
+            <property name="text">
+             <string>Odd Parity</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QRadioButton" name="rbEvenParity">
+            <property name="text">
+             <string>Even Parity</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <spacer name="verticalSpacer_2">
+            <property name="orientation">
+             <enum>Qt::Vertical</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>20</width>
+              <height>2</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+         </layout>
+        </widget>
+       </item>
+       <item>
+        <widget class="QFrame" name="frame_3">
+         <layout class="QVBoxLayout" name="verticalLayout_7">
+          <item>
+           <widget class="QRadioButton" name="rb8Bits">
+            <property name="text">
+             <string>8 bits</string>
+            </property>
+            <property name="checked">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QRadioButton" name="rb7Bits">
+            <property name="text">
+             <string>7 bits</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QRadioButton" name="rb6Bits">
+            <property name="text">
+             <string>6 bits</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QRadioButton" name="rb5Bits">
+            <property name="text">
+             <string>5 bits</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <spacer name="verticalSpacer_3">
+            <property name="orientation">
+             <enum>Qt::Vertical</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>20</width>
+              <height>40</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+         </layout>
+        </widget>
+       </item>
+       <item>
+        <widget class="QFrame" name="frame_4">
+         <layout class="QVBoxLayout" name="verticalLayout">
+          <item>
+           <widget class="QRadioButton" name="rb1StopBit">
+            <property name="text">
+             <string>1 Stop Bit</string>
+            </property>
+            <property name="checked">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QRadioButton" name="rb2StopBit">
+            <property name="text">
+             <string>2 Stop Bit</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <spacer name="verticalSpacer_4">
+            <property name="orientation">
+             <enum>Qt::Vertical</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>20</width>
+              <height>2</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+         </layout>
+        </widget>
+       </item>
+       <item>
+        <widget class="QFrame" name="frame_2">
+         <layout class="QVBoxLayout" name="verticalLayout_6">
+          <item>
+           <widget class="QRadioButton" name="rbNoFlowControl">
+            <property name="text">
+             <string>No Flow Control</string>
+            </property>
+            <property name="checked">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QRadioButton" name="rbHardwareControl">
+            <property name="text">
+             <string>Hardware Control</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QRadioButton" name="rbSoftwareControl">
+            <property name="text">
+             <string>Software Control</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <spacer name="verticalSpacer_5">
+            <property name="orientation">
+             <enum>Qt::Vertical</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>20</width>
+              <height>2</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+         </layout>
+        </widget>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <spacer name="horizontalSpacer">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>10000</width>
+       <height>20</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item>
+    <layout class="QVBoxLayout" name="verticalLayout_4">
+     <item>
+      <widget class="CustomCheckableButton" name="pbOpenPort">
+       <property name="minimumSize">
+        <size>
+         <width>0</width>
+         <height>50</height>
+        </size>
+       </property>
+       <property name="text">
+        <string>Open</string>
+       </property>
+       <property name="checkable">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="pbSkipByte">
+       <property name="text">
+        <string>Skip Byte</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="verticalSpacer">
+       <property name="orientation">
+        <enum>Qt::Vertical</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>20</width>
+         <height>40</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <customwidgets>
+  <customwidget>
+   <class>CustomCheckableButton</class>
+   <extends>QPushButton</extends>
+   <header>customcheckablebutton.h</header>
+  </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/serialplot.pro b/serialplot.pro
--- a/serialplot.pro
+++ b/serialplot.pro
@@ -35,14 +35,17 @@ CONFIG += qwt
 
 SOURCES += main.cpp\
         mainwindow.cpp \
-    customcheckablebutton.cpp
+    customcheckablebutton.cpp \
+    portcontrol.cpp
 
 HEADERS  += mainwindow.h \
     utils.h \
-    customcheckablebutton.h
+    customcheckablebutton.h \
+    portcontrol.h
 
 FORMS    += mainwindow.ui \
-    about_dialog.ui
+    about_dialog.ui \
+    portcontrol.ui
 
 INCLUDEPATH += qmake/