Merge branch 'nothingTVatYT-fix-linuxwindow'

Source/Engine/Platform/Linux/LinuxPlatform.cpp

@@ -94,6 +94,7 @@ X11::XcursorImage* CursorsImg[(int32)CursorType::MAX];
 Dictionary<StringAnsi, X11::KeyCode> KeyNameMap;
 Array<KeyboardKeys> KeyCodeMap;
 Delegate<void*> LinuxPlatform::xEventRecieved;
+Window* MouseTrackingWindow = nullptr;
 
 // Message boxes configuration
 #define LINUX_DIALOG_MIN_BUTTON_WIDTH 64
@@ -1916,7 +1917,6 @@ bool LinuxPlatform::Init()
 {
     if (PlatformBase::Init())
         return true;
-
     char fileNameBuffer[1024];
 
     // Init timing
@@ -2398,7 +2398,7 @@ void LinuxPlatform::Tick()
 				// Update input context focus
 				X11::XSetICFocus(IC);
 				window = WindowsManager::GetByNativePtr((void*)event.xfocus.window);
-				if (window)
+				if (window && MouseTrackingWindow == nullptr)
 				{
 					window->OnGotFocus();
 				}
@@ -2407,7 +2407,7 @@ void LinuxPlatform::Tick()
 				// Update input context focus
 				X11::XUnsetICFocus(IC);
 				window = WindowsManager::GetByNativePtr((void*)event.xfocus.window);
-				if (window)
+				if (window && MouseTrackingWindow == nullptr)
 				{
 					window->OnLostFocus();
 				}
@@ -2514,23 +2514,32 @@ void LinuxPlatform::Tick()
 				break;
 			case ButtonPress:
 				window = WindowsManager::GetByNativePtr((void*)event.xbutton.window);
-				if (window)
+		        if (MouseTrackingWindow)
+		            MouseTrackingWindow->OnButtonPress(&event.xbutton);
+				else if (window)
 					window->OnButtonPress(&event.xbutton);
 				break;
 			case ButtonRelease:
 				window = WindowsManager::GetByNativePtr((void*)event.xbutton.window);
-				if (window)
+		        if (MouseTrackingWindow)
+		            MouseTrackingWindow->OnButtonRelease(&event.xbutton);
+				else if (window)
 					window->OnButtonRelease(&event.xbutton);
 				break;
 			case MotionNotify:
 				window = WindowsManager::GetByNativePtr((void*)event.xmotion.window);
-				if (window)
+		        if (MouseTrackingWindow)
+		            MouseTrackingWindow->OnMotionNotify(&event.xmotion);
+				else if (window)
 					window->OnMotionNotify(&event.xmotion);
 				break;
 			case EnterNotify:
+			    // nothing?
 				break;
 			case LeaveNotify:
 				window = WindowsManager::GetByNativePtr((void*)event.xcrossing.window);
+		        if (MouseTrackingWindow)
+		            MouseTrackingWindow->OnLeaveNotify(&event.xcrossing);
 				if (window)
 					window->OnLeaveNotify(&event.xcrossing);
 				break;

Source/Engine/Platform/Linux/LinuxWindow.cpp

@@ -40,6 +40,7 @@ extern X11::Atom xAtomWmName;
 extern Dictionary<StringAnsi, X11::KeyCode> KeyNameMap;
 extern Array<KeyboardKeys> KeyCodeMap;
 extern X11::Cursor Cursors[(int32)CursorType::MAX];
+extern Window* MouseTrackingWindow;
 
 static constexpr uint32 MouseDoubleClickTime = 500;
 static constexpr uint32 MaxDoubleClickDistanceSquared = 10;
@@ -54,7 +55,7 @@ LinuxWindow::LinuxWindow(const CreateWindowSettings& settings)
         return;
 	auto screen = XDefaultScreen(display);
 
-	// Cache data
+    // Cache data
 	int32 width = Math::TruncToInt(settings.Size.X);
 	int32 height = Math::TruncToInt(settings.Size.Y);
 	_clientSize = Float2((float)width, (float)height);
@@ -111,6 +112,12 @@ LinuxWindow::LinuxWindow(const CreateWindowSettings& settings)
 	windowAttributes.border_pixel = XBlackPixel(display, screen);
 	windowAttributes.event_mask = KeyPressMask | KeyReleaseMask | StructureNotifyMask | ExposureMask;
 
+    if (!settings.IsRegularWindow)
+    {
+        windowAttributes.save_under = true;
+        windowAttributes.override_redirect = true;
+    }
+
 	// TODO: implement all window settings
 	/*
 	bool Fullscreen;
@@ -118,11 +125,16 @@ LinuxWindow::LinuxWindow(const CreateWindowSettings& settings)
 	bool AllowMaximize;
 	*/
 
+    unsigned long valueMask = CWBackPixel | CWBorderPixel | CWEventMask | CWColormap;
+    if (!settings.IsRegularWindow)
+    {
+        valueMask |= CWOverrideRedirect | CWSaveUnder;
+    }
 	const X11::Window window = X11::XCreateWindow(
 		display, X11::XRootWindow(display, screen), x, y,
 		width, height, 0, visualInfo->depth, InputOutput,
 		visualInfo->visual,
-		CWBackPixel | CWBorderPixel | CWEventMask | CWColormap, &windowAttributes);
+		valueMask, &windowAttributes);
 	_window = window;
 	LinuxWindow::SetTitle(settings.Title);
 
@@ -811,12 +823,13 @@ void LinuxWindow::SetTitle(const StringView& title)
 
 void LinuxWindow::StartTrackingMouse(bool useMouseScreenOffset)
 {
-	// TODO: impl this
+    MouseTrackingWindow = this;
 }
 
 void LinuxWindow::EndTrackingMouse()
 {
-	// TODO: impl this
+    if (MouseTrackingWindow == this)
+        MouseTrackingWindow = nullptr;
 }
 
 void LinuxWindow::SetCursor(CursorType type)