Added WidgetResizeHandler::setAllowedResizeSides()

src/private/WidgetResizeHandler.cpp

@@ -51,6 +51,11 @@ WidgetResizeHandler::~WidgetResizeHandler()
 {
 }
 
+void WidgetResizeHandler::setAllowedResizeSides(CursorPositions sides)
+{
+    mAllowedResizeSides = sides;
+}
+
 bool WidgetResizeHandler::eventFilter(QObject *o, QEvent *e)
 {
     if (s_disableAllHandlers)
@@ -367,6 +372,9 @@ void WidgetResizeHandler::updateCursor(CursorPosition m)
     case CursorPosition_Undefined:
         restoreMouseCursor();
         break;
+    case CursorPosition_All:
+        // Doesn't happen
+        break;
     }
 }
 
@@ -408,5 +416,8 @@ WidgetResizeHandler::CursorPosition WidgetResizeHandler::cursorPosition(QPoint g
     else if (qAbs(y - (mTarget->height() - margin)) <= margin)
         result |= CursorPosition_Bottom;
 
+    // Filter out sides we don't allow
+    result = result & mAllowedResizeSides;
+
     return static_cast<CursorPosition>(result);
 }

src/private/WidgetResizeHandler_p.h

@@ -40,8 +40,10 @@ public:
         CursorPosition_TopLeft = CursorPosition_Top | CursorPosition_Left,
         CursorPosition_TopRight = CursorPosition_Top | CursorPosition_Right,
         CursorPosition_BottomRight = CursorPosition_Bottom | CursorPosition_Right,
-        CursorPosition_BottomLeft = CursorPosition_Bottom | CursorPosition_Left
+        CursorPosition_BottomLeft = CursorPosition_Bottom | CursorPosition_Left,
+        CursorPosition_All = CursorPosition_Left | CursorPosition_Right | CursorPosition_Top | CursorPosition_Bottom
     };
+    Q_DECLARE_FLAGS(CursorPositions, CursorPosition)
 
     /**
      * @brief CTOR
@@ -50,6 +52,14 @@ public:
     explicit WidgetResizeHandler(bool filterIsGlobal, QWidgetOrQuick *target);
     ~WidgetResizeHandler() override;
 
+    /**
+     * @brief Sets the sides the user is allowed to resize with mouse.
+     *
+     * By default the user can resize all 4 sides.
+     * However, when a dock widget is overlayed (popuped), only one side can be resized.
+     */
+    void setAllowedResizeSides(CursorPositions);
+
 #ifdef Q_OS_WIN
     static bool handleWindowsNativeEvent(FloatingWindow *w, const QByteArray &eventType, void *message, Qt5Qt6Compat::qintptr *result);
 #endif
@@ -69,6 +79,7 @@ private:
     QPoint mNewPosition;
     bool mResizeWidget = false;
     const bool mFilterIsGlobal;
+    CursorPositions mAllowedResizeSides = CursorPosition_All;
 };
 
 }