GUI: remember and manage maximized state

src/qtgui/guiutils.cpp

@@ -79,6 +79,7 @@ void rwSettings(bool writing)
     QSettings settings("Recoll.org", "recoll");
     SETTING_RW(prefs.mainwidth, "/Recoll/geometry/width", Int, 0);
     SETTING_RW(prefs.mainheight, "/Recoll/geometry/height", Int, 0);
+    SETTING_RW(prefs.maximized, "/Recoll/geometry/maximized", Bool, 0);
     SETTING_RW(prefs.pvwidth, "/Recoll/geometry/pvwidth", Int, 0);
     SETTING_RW(prefs.pvheight, "/Recoll/geometry/pvheight", Int, 0);
     SETTING_RW(prefs.toolArea, "/Recoll/geometry/toolArea", Int, 0);

src/qtgui/guiutils.h

@@ -68,6 +68,7 @@ class PrefsPack {
     QString queryStemLang;
     int mainwidth;
     int mainheight;
+    bool maximized{false};
     int pvwidth; // Preview window geom
     int pvheight;
     int toolArea; // Area for "tools" toolbar

src/qtgui/main.cpp

@@ -375,7 +375,11 @@ int main(int argc, char **argv)
 
     maybeOpenDb(reason);
     
-    mainWindow->show();
+    if (prefs.maximized) {
+        mainWindow->showMaximized();
+    } else {
+        mainWindow->show();
+    }
     QTimer::singleShot(0, mainWindow, SLOT(initDbOpen()));
 
     // Connect exit handlers etc.. Beware, apparently this must come

src/qtgui/rclmain_w.cpp

@@ -646,10 +646,12 @@ void RclMain::fileExit()
 {
     LOGDEB("RclMain: fileExit\n");
     // Don't save geometry if we're currently fullscreened
-    if (!isFullScreen()) {
+    if (!isFullScreen() && !isMaximized()) {
         prefs.mainwidth = width();
         prefs.mainheight = height();
     }
+    prefs.maximized = isMaximized();
+    
     prefs.toolArea = toolBarArea(m_toolsTB);
     prefs.resArea = toolBarArea(m_resTB);
     restable->saveColState();