refactor: some mini feature changes in BaseWindow (#6074)

src/widgets/BaseWindow.hpp

@@ -38,9 +38,10 @@ public:
         DisableLayoutSave = 1 << 7,
         BoundsCheckOnShow = 1 << 8,
         ClearBuffersOnDpiChange = 1 << 9,
-    };
 
-    enum ActionOnFocusLoss { Nothing, Delete, Close, Hide };
+        /// special flag that enables the Qt::Popup flag on Linux
+        LinuxPopup = 1 << 10,
+    };
 
     explicit BaseWindow(FlagsEnum<Flags> flags_ = None,
                         QWidget *parent = nullptr);
@@ -55,9 +56,6 @@ public:
                                       std::function<void()> onClicked);
     EffectLabel *addTitleBarLabel(std::function<void()> onClicked);
 
-    void setActionOnFocusLoss(ActionOnFocusLoss value);
-    ActionOnFocusLoss getActionOnFocusLoss() const;
-
     void moveTo(QPoint point, widgets::BoundsChecking mode);
 
     /**
@@ -93,6 +91,25 @@ Q_SIGNALS:
     void topMostChanged(bool topMost);
 
 protected:
+    enum class FocusOutAction : std::uint8_t {
+        None,
+        Hide,
+    };
+
+    /// focusOutAction is used when the `FocusOut` event is fired
+    FocusOutAction focusOutAction = FocusOutAction::None;
+
+    enum class WindowDeactivateAction : std::uint8_t {
+        Nothing,
+        Delete,
+        Close,
+        Hide,
+    };
+
+    /// This action is used when the `WindowDeactivate` event is fired
+    WindowDeactivateAction windowDeactivateAction =
+        WindowDeactivateAction::Nothing;
+
 #if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
     bool nativeEvent(const QByteArray &eventType, void *message,
                      qintptr *result) override;
@@ -118,6 +135,9 @@ protected:
     void mousePressEvent(QMouseEvent *event) override;
     void mouseReleaseEvent(QMouseEvent *event) override;
     void mouseMoveEvent(QMouseEvent *event) override;
+
+    void focusOutEvent(QFocusEvent *event) override;
+
     QPointF movingRelativePos;
     bool moving{};
 
@@ -132,7 +152,6 @@ private:
 
     void calcButtonsSizes();
     void drawCustomWindowFrame(QPainter &painter);
-    void onFocusLost();
 
     static void applyScaleRecursive(QObject *root, float scale);
 
@@ -148,7 +167,6 @@ private:
 #endif
 
     bool enableCustomFrame_;
-    ActionOnFocusLoss actionOnFocusLoss_ = Nothing;
     bool frameless_;
     bool shown_ = false;
     FlagsEnum<Flags> flags_;