Fix embed UI covering window controls under certain hosts

Fixes #725

source/backend/utils/Windows.cpp

@@ -64,12 +64,14 @@ void carla_x11_move_window(uintptr_t winId, int x, int y)
 
 int* carla_x11_get_window_pos(uintptr_t winId)
 {
-    static int pos[2];
+    static int pos[4];
 
     if (winId == 0)
     {
         pos[0] = 0;
         pos[1] = 0;
+        pos[2] = 0;
+        pos[3] = 0;
     }
 #ifdef HAVE_X11
     else if (::Display* const disp = XOpenDisplay(nullptr))
@@ -82,12 +84,16 @@ int* carla_x11_get_window_pos(uintptr_t winId)
         XCloseDisplay(disp);
         pos[0] = x - xwa.x;
         pos[1] = y - xwa.y;
+        pos[2] = xwa.x;
+        pos[3] = xwa.y;
     }
 #endif
     else
     {
         pos[0] = 0;
         pos[1] = 0;
+        pos[2] = 0;
+        pos[3] = 0;
     }
 
     return pos;

source/carla_utils.py

@@ -347,7 +347,7 @@ class CarlaUtils(object):
 
     def x11_get_window_pos(self, winId):
         data = self.lib.carla_x11_get_window_pos(winId)
-        return (int(data[0]), int(data[1]))
+        return tuple(int(data[i]) for i in range(4))
 
     def cocoa_get_window(self, winId):
         return self.lib.carla_cocoa_get_window(winId)

source/native-plugins/resources/carla-plugin

@@ -436,7 +436,7 @@ if config_UseQt5 and LINUX:
                 return
             self.fPos = pos
             self.move(pos[0], pos[1])
-            gCarla.utils.x11_move_window(self.fWinId, 0, 0)
+            gCarla.utils.x11_move_window(self.fWinId, pos[2], pos[3])
 
         def eventFilter(self, obj, ev):
             if isinstance(ev, QMouseEvent):