Add a clear settings button

src/mainwindow.cpp

@@ -1297,3 +1297,20 @@ void MainWindow::mousePressEvent(QMouseEvent *event)
         onPrevButtonClicked();
     }
 }
+
+void MainWindow::on_actionClear_Settings_triggered()
+{
+    QMessageBox msgBox;
+    msgBox.setWindowTitle(QObject::tr("Clear Settings"));
+    msgBox.setText(QObject::tr("Are you sure you want to clear the settings saved on disk?"));
+    msgBox.setIcon(QMessageBox::Warning);
+    msgBox.addButton(QMessageBox::Cancel);
+    QPushButton *clearSettingsButton = msgBox.addButton(QMessageBox::Ok);
+
+    msgBox.exec();
+
+    if (msgBox.clickedButton() == clearSettingsButton) {
+        settings.clear();
+    }
+}
+

src/mainwindow.h

@@ -43,6 +43,8 @@ private slots:
     void on_actionCyclic_Navigation_toggled(bool arg1);
     void on_actionUse_GB_instead_of_TB_toggled(bool arg1);
 
+    void on_actionClear_Settings_triggered();
+
 private:
     Ui::MainWindow *ui;
     QSettings settings;

src/mainwindow.ui

@@ -490,7 +490,7 @@
      <x>0</x>
      <y>0</y>
      <width>800</width>
-     <height>30</height>
+     <height>23</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -509,6 +509,8 @@
     <addaction name="actionUse_Fahrenheit"/>
     <addaction name="actionCyclic_Navigation"/>
     <addaction name="actionUse_GB_instead_of_TB"/>
+    <addaction name="separator"/>
+    <addaction name="actionClear_Settings"/>
    </widget>
    <widget class="QMenu" name="menuHelp">
     <property name="title">
@@ -637,6 +639,11 @@
     <string>About &amp;Qt</string>
    </property>
   </action>
+  <action name="actionClear_Settings">
+   <property name="text">
+    <string>Clear Settings</string>
+   </property>
+  </action>
  </widget>
  <resources>
   <include location="resources.qrc"/>