Revert "opt: remove wasMaximized logic of mainwindow" (#1664)

* Revert "opt: remove wasMaximized logic of mainwindow"

This reverts commit 99c221c854.

* [autofix.ci] apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

src/ui/mainwindow.cc

@@ -165,6 +165,7 @@ MainWindow::MainWindow( Config::Class & cfg_ ):
   audioPlayerFactory( cfg.preferences ),
   wordFinder( this ),
   wordListSelChanged( false ),
+  wasMaximized( false ),
   headwordsDlg( nullptr ),
   ftsIndexing( dictionaries ),
   ftsDlg( nullptr ),
@@ -871,6 +872,8 @@ MainWindow::MainWindow( Config::Class & cfg_ ):
     mainStatusBar->showMessage( tr( "Accessibility API is not enabled" ), 10000, QPixmap( ":/icons/error.svg" ) );
 #endif
 
+  wasMaximized = isMaximized();
+
   history.setSaveInterval( cfg.preferences.historyStoreInterval );
 #ifndef Q_OS_MACOS
   ui.centralWidget->grabGesture( Gestures::GDPinchGestureType );
@@ -2494,6 +2497,11 @@ bool MainWindow::eventFilter( QObject * obj, QEvent * ev )
     }
   }
 
+  if ( obj == this && ev->type() == QEvent::WindowStateChange ) {
+    auto stev    = dynamic_cast< QWindowStateChangeEvent * >( ev );
+    wasMaximized = ( stev->oldState() == Qt::WindowMaximized && isMinimized() );
+  }
+
   if ( ev->type() == QEvent::MouseButtonPress ) {
     auto event = dynamic_cast< QMouseEvent * >( ev );
 
@@ -2751,6 +2759,15 @@ void MainWindow::toggleMainWindow( bool onlyShow )
     raise();
     shown = true;
   }
+  else if ( isMinimized() ) {
+    if ( wasMaximized )
+      showMaximized();
+    else
+      showNormal();
+    activateWindow();
+    raise();
+    shown = true;
+  }
   else if ( !isActiveWindow() ) {
     activateWindow();
     if ( cfg.preferences.raiseWindowOnSearch ) {

src/ui/mainwindow.hh

@@ -158,6 +158,8 @@ private:
 
   bool wordListSelChanged;
 
+  bool wasMaximized; // Window state before minimization
+
   QPrinter & getPrinter(); // Creates a printer if it's not there and returns it
 
   DictHeadwords * headwordsDlg;