winewayland.drv: Handle xdg_toplevel tiled states.

dlls/winewayland.drv/wayland_surface.c

@@ -91,6 +91,12 @@ static void xdg_toplevel_handle_configure(void *data,
         case XDG_TOPLEVEL_STATE_RESIZING:
             config_state |= WAYLAND_SURFACE_CONFIG_STATE_RESIZING;
             break;
+        case XDG_TOPLEVEL_STATE_TILED_LEFT:
+        case XDG_TOPLEVEL_STATE_TILED_RIGHT:
+        case XDG_TOPLEVEL_STATE_TILED_TOP:
+        case XDG_TOPLEVEL_STATE_TILED_BOTTOM:
+            config_state |= WAYLAND_SURFACE_CONFIG_STATE_TILED;
+            break;
         default:
             break;
         }

dlls/winewayland.drv/waylanddrv.h

@@ -60,7 +60,8 @@ enum wayland_window_message
 enum wayland_surface_config_state
 {
     WAYLAND_SURFACE_CONFIG_STATE_MAXIMIZED = (1 << 0),
-    WAYLAND_SURFACE_CONFIG_STATE_RESIZING = (1 << 1)
+    WAYLAND_SURFACE_CONFIG_STATE_RESIZING = (1 << 1),
+    WAYLAND_SURFACE_CONFIG_STATE_TILED = (1 << 2)
 };
 
 struct wayland_cursor

dlls/winewayland.drv/window.c

@@ -401,8 +401,13 @@ static void wayland_configure_window(HWND hwnd)
     }
 
     /* The Wayland maximized state is very strict about surface size, so don't
-     * let the application override it. */
-    if (state & WAYLAND_SURFACE_CONFIG_STATE_MAXIMIZED) flags |= SWP_NOSENDCHANGING;
+     * let the application override it. The tiled state is not as strict,
+     * but it indicates a strong size preference, so try to respect it. */
+    if (state & (WAYLAND_SURFACE_CONFIG_STATE_MAXIMIZED |
+                 WAYLAND_SURFACE_CONFIG_STATE_TILED))
+    {
+        flags |= SWP_NOSENDCHANGING;
+    }
 
     NtUserSetWindowPos(hwnd, 0, 0, 0, width, height, flags);
 }