add minimal about dialogs

tools/lammps-gui/lammpsgui.cpp

@@ -37,8 +37,10 @@ LammpsGui::LammpsGui(QWidget *parent, const char *filename) :
             &LammpsGui::run_buffer);
     connect(ui->actionExecute_Line, &QAction::triggered, this,
             &LammpsGui::run_line);
-    //    connect(ui->actionAbout, &QAction::triggered, this,
+    connect(ui->actionAbout_LAMMPS_GUI, &QAction::triggered, this,
-    //    &LammpsGui::about);
+            &LammpsGui::about);
+    connect(ui->actionLAMMPS_Info, &QAction::triggered, this,
+            &LammpsGui::about_lammps);
 
 #if !QT_CONFIG(clipboard)
     ui->actionCut->setEnabled(false);
@@ -206,7 +208,21 @@ void LammpsGui::clear()
     ui->textEdit->moveCursor(QTextCursor::Start, QTextCursor::MoveAnchor);
 }
 
+void LammpsGui::about_lammps()
+{
+    char *args[] = {(char *)"LAMMPS GUI", (char *)"-log", (char *)"none"};
+    int nargs    = sizeof(args) / sizeof(char *);
+
+    if (!lammps_handle)
+        lammps_handle = lammps_open_no_mpi(nargs, args, nullptr);
+
+    std::string version = "LAMMPS Version " + std::to_string(lammps_version(lammps_handle));
+    QString lammps_info(version.c_str());
+    QMessageBox::information(this, "About LAMMPS", lammps_info);
+}
+
 void LammpsGui::about()
 {
-    // dummy
+    QMessageBox::information(this, "About LAMMPS-GUI",
+                             "This is LAMMPS-GUI version 0.1");
 }

tools/lammps-gui/lammpsgui.h

@@ -48,6 +48,7 @@ private slots:
     void run_buffer();
     void run_line();
     void about();
+    void about_lammps();
 
 private:
     Ui::LammpsGui *ui;

tools/lammps-gui/lammpsgui.ui

@@ -25,7 +25,7 @@
     </property>
     <layout class="QVBoxLayout" name="verticalLayout">
      <item>
-      <widget class="CodeEditor" name="textEdit"/>
+      <widget class="CodeEditor" name="textEdit" native="true"/>
      </item>
     </layout>
    </widget>
@@ -36,7 +36,7 @@
      <x>0</x>
      <y>0</y>
      <width>800</width>
-     <height>23</height>
+     <height>24</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -74,6 +74,8 @@
     <property name="title">
      <string>About</string>
     </property>
+    <addaction name="actionAbout_LAMMPS_GUI"/>
+    <addaction name="actionLAMMPS_Info"/>
    </widget>
    <addaction name="menuFile"/>
    <addaction name="menuEdit"/>
@@ -146,7 +148,24 @@
     <string>Execute Line</string>
    </property>
   </action>
+  <action name="actionAbout_LAMMPS_GUI">
+   <property name="text">
+    <string>About LAMMPS-GUI</string>
+   </property>
+  </action>
+  <action name="actionLAMMPS_Info">
+   <property name="text">
+    <string>LAMMPS Info</string>
+   </property>
+  </action>
  </widget>
+ <customwidgets>
+  <customwidget>
+   <class>CodeEditor</class>
+   <extends>QWidget</extends>
+   <header>codeeditor.h</header>
+  </customwidget>
+ </customwidgets>
  <resources/>
  <connections/>
 </ui>