_dragging fixes windows

Source/Editor/GUI/Docking/DockHintWindow.cs

@@ -159,7 +159,7 @@ namespace FlaxEditor.GUI.Docking
             if (_toMove == null)
                 return;
 
-            _toMove.Window?.Window.StopDragging();
+            _toMove.Window.Window.Opacity = 1.0f;
 
             // Check if window won't be docked
             if (_toSet == DockState.Float)
@@ -392,6 +392,9 @@ namespace FlaxEditor.GUI.Docking
                 // Make sure the all the dock hint areas are not under other windows
                 _toDock?.RootWindow.Window.BringToFront();
                 _toMove.RootWindow.Window.BringToFront();
+
+                // Make the dragged window transparent when dock hints are visible
+                _toMove.Window.Window.Opacity = _toDock == null ? 1.0f : 0.4f;
             }
             
             // Check dock state to use

Source/Engine/Platform/Base/WindowBase.h

@@ -748,23 +748,6 @@ public:
     /// <returns>True during the frame the user releases the button</returns>
     API_FUNCTION() bool GetMouseButtonUp(MouseButton button) const;
 
-public:
-    /// <summary>
-    /// Start dragging the window.
-    /// </summary>
-    /// <param name="offset">The position offset for drag from top-left corner.</param>
-    /// <param name="dragSourceWindow">The source window where the dragging is started from. For attached tabs, this is the parent window</param>
-    API_FUNCTION() virtual void StartDragging(const Float2& offset, Window* dragSourceWindow)
-    {
-    }
-
-    /// <summary>
-    /// Ends dragging the window.
-    /// </summary>
-    API_FUNCTION() virtual void StopDragging()
-    {
-    }
-
 public:
     void OnShow();
     void OnResize(int32 width, int32 height);

Source/Engine/Platform/SDL/SDLPlatform.Windows.cpp

@@ -53,21 +53,19 @@ bool SDLCALL SDLPlatform::EventMessageHook(void* userdata, MSG* msg)
         draggedWindow = window;
 
         draggedWindowStartPosition = draggedWindow->GetClientPosition();
-        draggedWindowMousePosition.X = static_cast<float>(static_cast<LONG>(WINDOWS_GET_X_LPARAM(msg->lParam)));
-        draggedWindowMousePosition.Y = static_cast<float>(static_cast<LONG>(WINDOWS_GET_Y_LPARAM(msg->lParam)));
+        Float2 mousePos(static_cast<float>(static_cast<LONG>(WINDOWS_GET_X_LPARAM(msg->lParam))), static_cast<float>(static_cast<LONG>(WINDOWS_GET_Y_LPARAM(msg->lParam))));
+        draggedWindowMousePosition = mousePos;
         draggedWindowMousePosition -= draggedWindowStartPosition;
-        //auto hit = static_cast<WindowHitCodes>(msg->wParam);
-        //if (SDLPlatform::CheckWindowDragging(window, hit))
-        //    return false;
-        //bool result = false;
-        //window->OnLeftButtonHit(static_cast<WindowHitCodes>(msg->wParam), result);
-        //if (result)
+
+        bool result = false;
+        WindowHitCodes hit = static_cast<WindowHitCodes>(msg->wParam);
+        window->OnHitTest(mousePos, hit, result);
+        //if (result && hit != WindowHitCodes::Caption)
         //    return false;
 
-        //::ClientToScreen(static_cast<HWND>(window->GetNativePtr()), &p);
-        //const Float2 mousePos(static_cast<float>(p.x), static_cast<float>(p.y));
-       
-        SDL_Event event{0};
+        if (hit == WindowHitCodes::Caption)
+        {
+            SDL_Event event{ 0 };
             event.button.type = SDL_EVENT_MOUSE_BUTTON_DOWN;
             event.button.down = true;
             event.button.timestamp = SDL_GetTicksNS();
@@ -79,6 +77,7 @@ bool SDLCALL SDLPlatform::EventMessageHook(void* userdata, MSG* msg)
 
             SDL_PushEvent(&event);
         }
+    }
     /*else if (msg->message == WM_NCLBUTTONUP || msg->message == WM_CAPTURECHANGED)
     {
         windowDragging = false;

Source/Engine/Platform/SDL/SDLWindow.cpp

@@ -1310,7 +1310,6 @@ DragDropEffect SDLWindow::DoDragDrop(const StringView& data, const Float2& offse
 #endif
     }
 
-    //SetOpacity(0.1f);
 #if PLATFORM_LINUX
     if (SDLPlatform::UsesWayland()
         DoDragDropWayland(String("notawindow"), dragSourceWindow, dragOffset);
@@ -1353,17 +1352,5 @@ DragDropEffect SDLWindow::DoDragDrop(const StringView& data, const Float2& offse
     return DragDropEffect::None;
 }
 
-void SDLWindow::StartDragging(const Float2& offset, Window* dragSourceWindow)
-{
-}
-
-void SDLWindow::StopDragging()
-{
-    LOG(Info, "StopDragging");
-
-    SetOpacity(1.0f);
-    //draggingActive = false;
-}
-
 #endif
 

Source/Engine/Platform/SDL/SDLWindow.h

@@ -109,8 +109,6 @@ public:
     void StartClippingCursor(const Rectangle& bounds) override;
     void EndClippingCursor() override;
     void SetCursor(CursorType type) override;
-    void StartDragging(const Float2& offset, Window* dragSourceWindow) override;
-    void StopDragging() override;
 
 #if USE_EDITOR && PLATFORM_WINDOWS
     // [IUnknown]