Added option to reset all settings

src/ui/QGCSettingsWidget.cc

@@ -35,6 +35,9 @@ QGCSettingsWidget::QGCSettingsWidget(QWidget *parent, Qt::WindowFlags flags) :
 
     this->window()->setWindowTitle(tr("QGroundControl Settings"));
 
+    // Settings reset
+    connect(ui->resetSettingsButton, SIGNAL(clicked()), this, SLOT(resetSettings()));
+
     // Audio preferences
     ui->audioMuteCheckBox->setChecked(GAudioOutput::instance()->isMuted());
     connect(ui->audioMuteCheckBox, SIGNAL(toggled(bool)), GAudioOutput::instance(), SLOT(mute(bool)));
@@ -193,3 +196,13 @@ void QGCSettingsWidget::selectCustomMode(int mode)
     MainWindow::instance()->setCustomMode(static_cast<enum MainWindow::CUSTOM_MODE>(ui->customModeComboBox->itemData(mode).toInt()));
     MainWindow::instance()->showInfoMessage(tr("Please restart QGroundControl"), tr("The optimization selection was changed. The application needs to be closed and restarted to put all optimizations into effect."));
 }
+
+void QGCSettingsWidget::resetSettings()
+{
+    QSettings settings;
+    settings.sync();
+    settings.clear();
+    // Write current application version
+    settings.setValue("QGC_APPLICATION_VERSION", QGC_APPLICATION_VERSION);
+    settings.sync();
+}

src/ui/QGCSettingsWidget.h

@@ -23,6 +23,7 @@ public slots:
     void setDefaultStyle();
     void selectStylesheet();
     void selectCustomMode(int mode);
+    void resetSettings();
 
 private:
     MainWindow* mainWindow;

src/ui/QGCSettingsWidget.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>528</width>
-    <height>455</height>
+    <width>534</width>
+    <height>517</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -159,11 +159,34 @@
          <property name="sizeHint" stdset="0">
           <size>
            <width>20</width>
-           <height>0</height>
+           <height>20</height>
           </size>
          </property>
         </spacer>
        </item>
+       <item>
+        <widget class="QGroupBox" name="groupBox_2">
+         <property name="title">
+          <string>Danger Zone</string>
+         </property>
+         <layout class="QGridLayout" name="gridLayout" columnstretch="10,0">
+          <item row="1" column="1">
+           <widget class="QLabel" name="label_2">
+            <property name="text">
+             <string>Delete all settings, layouts and restore defaults</string>
+            </property>
+           </widget>
+          </item>
+          <item row="1" column="0">
+           <widget class="QPushButton" name="resetSettingsButton">
+            <property name="text">
+             <string>Reset Settings</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
+       </item>
       </layout>
      </widget>
     </widget>