add menu entry to reset to default settings

tools/lammps-gui/lammpsgui.cpp

@@ -140,7 +140,8 @@ LammpsGui::LammpsGui(QWidget *parent, const char *filename) :
     connect(ui->actionAbout_LAMMPS_GUI, &QAction::triggered, this, &LammpsGui::about);
     connect(ui->action_Help, &QAction::triggered, this, &LammpsGui::help);
     connect(ui->actionLAMMPS_Manual, &QAction::triggered, this, &LammpsGui::manual);
-    connect(ui->actionEdit_Preferences, &QAction::triggered, this, &LammpsGui::preferences);
+    connect(ui->actionPreferences, &QAction::triggered, this, &LammpsGui::preferences);
+    connect(ui->actionDefaults, &QAction::triggered, this, &LammpsGui::defaults);
     connect(ui->textEdit->document(), &QTextDocument::modificationChanged, this,
             &LammpsGui::modified);
 
@@ -619,6 +620,13 @@ void LammpsGui::manual()
     QDesktopServices::openUrl(QUrl("https://docs.lammps.org/"));
 }
 
+void LammpsGui::defaults()
+{
+    QSettings settings;
+    settings.clear();
+    settings.sync();
+}
+
 void LammpsGui::preferences()
 {
     Preferences prefs(&lammps);

tools/lammps-gui/lammpsgui.h

@@ -76,6 +76,7 @@ private slots:
     void logupdate();
     void modified();
     void preferences();
+    void defaults();
 
 private:
     Ui::LammpsGui *ui;
@@ -97,8 +98,8 @@ private:
     QList<QString> recent_files;
     std::vector<char *> lammps_args;
 };
-
 #endif // LAMMPSGUI_H
+
 // Local Variables:
 // c-basic-offset: 4
 // End:

tools/lammps-gui/lammpsgui.ui

@@ -33,7 +33,7 @@
      <x>0</x>
      <y>0</y>
      <width>600</width>
-     <height>24</height>
+     <height>23</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -59,7 +59,8 @@
     <addaction name="actionCut"/>
     <addaction name="actionPaste"/>
     <addaction name="separator"/>
-    <addaction name="actionEdit_Preferences"/>
+    <addaction name="actionPreferences"/>
+    <addaction name="actionDefaults"/>
    </widget>
    <widget class="QMenu" name="menu_Run">
     <property name="title">
@@ -180,7 +181,7 @@
      <normaloff>.</normaloff>.</iconset>
    </property>
    <property name="text">
-    <string>C&amp;ut</string>
+    <string>Cu&amp;t</string>
    </property>
    <property name="statusTip">
     <string>Cut Selected Text to Clipboard</string>
@@ -321,13 +322,13 @@
     <string>Ctrl+Shift+/</string>
    </property>
   </action>
-  <action name="actionEdit_Preferences">
+  <action name="actionPreferences">
    <property name="icon">
     <iconset theme="preferences-desktop">
      <normaloff>.</normaloff>.</iconset>
    </property>
    <property name="text">
-    <string>&amp;Preferences...</string>
+    <string>Pre&amp;ferences...</string>
    </property>
    <property name="shortcut">
     <string>Ctrl+P</string>
@@ -342,6 +343,14 @@
     <string>LAMMPS &amp;Manual</string>
    </property>
   </action>
+  <action name="actionDefaults">
+   <property name="icon">
+    <iconset theme="document-revert"/>
+   </property>
+   <property name="text">
+    <string>Reset to &amp;Defaults</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>