refactor & simplify ScanFlag:

All slots of ScanFlag are used just as functions calls.

mainwindow.cc

@@ -940,7 +940,7 @@ void MainWindow::clipboardChange( QClipboard::Mode m)
         // Show a Flag instead of translate directly.
         // And hand over the control of showing the popup to scanFlag
         if ( cfg.preferences.showScanFlag ) {
-          emit scanPopup->showScanFlag();
+          scanPopup->showScanFlag();
           return;
         }
 

scanflag.cc

@@ -4,29 +4,28 @@
 #include "ui_scanflag.h"
 #include <QScreen>
 
-static Qt::WindowFlags popupWindowFlags =
-
-Qt::ToolTip | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint
- | Qt::WindowDoesNotAcceptFocus
-;
 
 ScanFlag::ScanFlag(QWidget *parent) :
     QMainWindow(parent)
 {
   ui.setupUi( this );
 
-  setWindowFlags( popupWindowFlags );
+  setWindowFlags( Qt::ToolTip
+                | Qt::FramelessWindowHint
+                | Qt::WindowStaysOnTopHint
+                | Qt::WindowDoesNotAcceptFocus);
 
   setAttribute(Qt::WA_X11DoNotAcceptFocus);
 
   hideTimer.setSingleShot( true );
-  hideTimer.setInterval( 1500 );
+  hideTimer.setInterval( 1000 );
 
-  connect( &hideTimer, SIGNAL( timeout() ),
+  connect( &hideTimer, &QTimer::timeout,
-    this, SLOT( hideWindow() ) );
+    this, [=]{ hideWindow();
+  });
 
-  connect( ui.pushButton, SIGNAL( clicked( bool ) ),
+  connect( ui.pushButton, &QPushButton::clicked,
-                this, SLOT( pushButtonClicked() ) );
+           this, &ScanFlag::pushButtonClicked );
 }
 
 ScanFlag::~ScanFlag()
@@ -37,7 +36,7 @@ void ScanFlag::pushButtonClicked()
 {
   hideTimer.stop();
   hide();
-  emit showScanPopup();
+  emit requestScanPopup();
 }
 
 void ScanFlag::hideWindow()

scanflag.hh

@@ -2,7 +2,6 @@
 #define SCAN_FLAG_H
 
 
-#include "config.hh"
 #include <QMainWindow>
 #include <QTimer>
 #include "ui_scanflag.h"
@@ -16,18 +15,17 @@ public:
 
   ~ScanFlag();
 
+  void showScanFlag();
+  void pushButtonClicked();
+  void hideWindow();
+
 signals:
-  void showScanPopup ();
+  void requestScanPopup ();
 
 private:
   Ui::ScanFlag ui;
   QTimer hideTimer;
 
-private slots:
-  void showScanFlag();
-  void pushButtonClicked();
-  void hideWindow();
-
 };
 
 #endif // SCAN_FLAG_H

scanpopup.cc

@@ -317,13 +317,7 @@ ScanPopup::ScanPopup( QWidget * parent,
 #ifdef HAVE_X11
   scanFlag = new ScanFlag( this );
 
-  connect( this, SIGNAL( showScanFlag() ),
+  connect( scanFlag, &ScanFlag::requestScanPopup,
-           scanFlag, SLOT( showScanFlag() ) );
-
-  connect( this, SIGNAL( hideScanFlag() ),
-           scanFlag, SLOT( hideWindow() ) );
-
-  connect( scanFlag, &ScanFlag::showScanPopup,
     this, [=]{
     translateWordFromSelection();
   });
@@ -1344,3 +1338,12 @@ void ScanPopup::titleChanged( ArticleView *, QString const & title )
   ui.sendWordToFavoritesButton->setIcon( isWordPresentedInFavorites( title, groupId ) ?
                                          blueStarIcon : starIcon );
 }
+
+
+void ScanPopup::showScanFlag(){
+  scanFlag->showScanFlag();
+}
+
+void ScanPopup::hideScanFlag(){
+  scanFlag->hideWindow();
+}

scanpopup.hh

@@ -53,6 +53,13 @@ public:
   void setDictionaryIconSize();
 
   void saveConfigData();
+
+#ifdef HAVE_X11
+  /// Interaction with scan flag window
+  void showScanFlag();
+  void hideScanFlag();
+#endif
+
 signals:
 
   /// Forwarded from the dictionary bar, so that main window could act on this.
@@ -79,12 +86,6 @@ signals:
   /// Check is word already presented in Favorites
   bool isWordPresentedInFavorites( QString const & word, unsigned groupId );
 
-#ifdef HAVE_X11
-  /// Interaction with scan flag window
-  void showScanFlag();
-  void hideScanFlag();
-#endif
-
 #ifdef Q_OS_WIN32
   /// Ask for source window is current translate tab
   bool isGoldenDictWindow( HWND hwnd );