win32u: Mmove dummy surface implementation from user32.

dlls/user32/painting.c

@@ -169,9 +169,11 @@ static void update_visible_region( struct dce *dce )
  */
 static void release_dce( struct dce *dce )
 {
+    struct window_surface *dummy_surface = (struct window_surface *)NtUserCallHwnd( 0, NtUserGetDummySurface );
+
     if (!dce->hwnd) return;  /* already released */
 
-    __wine_set_visible_region( dce->hdc, 0, &dummy_surface.rect, &dummy_surface.rect, &dummy_surface );
+    __wine_set_visible_region( dce->hdc, 0, &dummy_surface->rect, &dummy_surface->rect, dummy_surface );
     USER_Driver->pReleaseDC( dce->hwnd, dce->hdc );
 
     if (dce->clip_rgn) DeleteObject( dce->clip_rgn );

dlls/user32/win.c

@@ -366,72 +366,6 @@ BOOL is_desktop_window( HWND hwnd )
 
 
 /*******************************************************************
- * Dummy window surface for windows that shouldn't get painted.
- */
-
-static void CDECL dummy_surface_lock( struct window_surface *window_surface )
-{
-    /* nothing to do */
-}
-
-static void CDECL dummy_surface_unlock( struct window_surface *window_surface )
-{
-    /* nothing to do */
-}
-
-static void *CDECL dummy_surface_get_bitmap_info( struct window_surface *window_surface, BITMAPINFO *info )
-{
-    static DWORD dummy_data;
-
-    info->bmiHeader.biSize          = sizeof( info->bmiHeader );
-    info->bmiHeader.biWidth         = dummy_surface.rect.right;
-    info->bmiHeader.biHeight        = dummy_surface.rect.bottom;
-    info->bmiHeader.biPlanes        = 1;
-    info->bmiHeader.biBitCount      = 32;
-    info->bmiHeader.biCompression   = BI_RGB;
-    info->bmiHeader.biSizeImage     = 0;
-    info->bmiHeader.biXPelsPerMeter = 0;
-    info->bmiHeader.biYPelsPerMeter = 0;
-    info->bmiHeader.biClrUsed       = 0;
-    info->bmiHeader.biClrImportant  = 0;
-    return &dummy_data;
-}
-
-static RECT *CDECL dummy_surface_get_bounds( struct window_surface *window_surface )
-{
-    static RECT dummy_bounds;
-    return &dummy_bounds;
-}
-
-static void CDECL dummy_surface_set_region( struct window_surface *window_surface, HRGN region )
-{
-    /* nothing to do */
-}
-
-static void CDECL dummy_surface_flush( struct window_surface *window_surface )
-{
-    /* nothing to do */
-}
-
-static void CDECL dummy_surface_destroy( struct window_surface *window_surface )
-{
-    /* nothing to do */
-}
-
-static const struct window_surface_funcs dummy_surface_funcs =
-{
-    dummy_surface_lock,
-    dummy_surface_unlock,
-    dummy_surface_get_bitmap_info,
-    dummy_surface_get_bounds,
-    dummy_surface_set_region,
-    dummy_surface_flush,
-    dummy_surface_destroy
-};
-
-struct window_surface dummy_surface = { &dummy_surface_funcs, { NULL, NULL }, 1, { 0, 0, 1, 1 } };
-
-/*******************************************************************
  * Off-screen window surface.
  */
 
@@ -569,8 +503,6 @@ void create_offscreen_window_surface( const RECT *visible_rect, struct window_su
  */
 void register_window_surface( struct window_surface *old, struct window_surface *new )
 {
-    if (old == &dummy_surface) old = NULL;
-    if (new == &dummy_surface) new = NULL;
     NtUserCallTwoParam( (UINT_PTR)old, (UINT_PTR)new, NtUserRegisterWindowSurface );
 }
 

dlls/user32/win.h

@@ -36,7 +36,6 @@ struct tagDIALOGINFO;
   /* Window functions */
 extern HWND get_hwnd_message_parent(void) DECLSPEC_HIDDEN;
 extern BOOL is_desktop_window( HWND hwnd ) DECLSPEC_HIDDEN;
-extern struct window_surface dummy_surface DECLSPEC_HIDDEN;
 extern void register_window_surface( struct window_surface *old, struct window_surface *new ) DECLSPEC_HIDDEN;
 extern void flush_window_surfaces( BOOL idle ) DECLSPEC_HIDDEN;
 extern WND *WIN_GetPtr( HWND hwnd ) DECLSPEC_HIDDEN;

dlls/user32/winpos.c

@@ -1976,10 +1976,11 @@ BOOL set_window_pos( HWND hwnd, HWND insert_after, UINT swp_flags,
     BOOL ret, needs_update = FALSE;
     RECT visible_rect, old_visible_rect, old_window_rect, old_client_rect, extra_rects[3];
     struct window_surface *old_surface, *new_surface = NULL;
+    struct window_surface *dummy_surface = (struct window_surface *)NtUserCallHwnd( 0, NtUserGetDummySurface );
 
     if (!parent || parent == GetDesktopWindow())
     {
-        new_surface = &dummy_surface;  /* provide a default surface for top-level windows */
+        new_surface = dummy_surface;  /* provide a default surface for top-level windows */
         window_surface_add_ref( new_surface );
     }
     visible_rect = *window_rect;
@@ -2017,8 +2018,8 @@ BOOL set_window_pos( HWND hwnd, HWND insert_after, UINT swp_flags,
     old_client_rect = win->client_rect;
     old_surface = win->surface;
     if (old_surface != new_surface) swp_flags |= SWP_FRAMECHANGED;  /* force refreshing non-client area */
-    if (new_surface == &dummy_surface) swp_flags |= SWP_NOREDRAW;
-    else if (old_surface == &dummy_surface)
+    if (new_surface == dummy_surface) swp_flags |= SWP_NOREDRAW;
+    else if (old_surface == dummy_surface)
     {
         swp_flags |= SWP_NOCOPYBITS;
         valid_rects = NULL;

dlls/win32u/dce.c

@@ -23,9 +23,119 @@
 #pragma makedep unix
 #endif
 
+#include <pthread.h>
 #include "ntgdi_private.h"
 #include "ntuser_private.h"
 
+
+static struct list window_surfaces = LIST_INIT( window_surfaces );
+static pthread_mutex_t surfaces_lock = PTHREAD_MUTEX_INITIALIZER;
+
+/*******************************************************************
+ * Dummy window surface for windows that shouldn't get painted.
+ */
+
+static void CDECL dummy_surface_lock( struct window_surface *window_surface )
+{
+    /* nothing to do */
+}
+
+static void CDECL dummy_surface_unlock( struct window_surface *window_surface )
+{
+    /* nothing to do */
+}
+
+static void *CDECL dummy_surface_get_bitmap_info( struct window_surface *window_surface, BITMAPINFO *info )
+{
+    static DWORD dummy_data;
+
+    info->bmiHeader.biSize          = sizeof( info->bmiHeader );
+    info->bmiHeader.biWidth         = dummy_surface.rect.right;
+    info->bmiHeader.biHeight        = dummy_surface.rect.bottom;
+    info->bmiHeader.biPlanes        = 1;
+    info->bmiHeader.biBitCount      = 32;
+    info->bmiHeader.biCompression   = BI_RGB;
+    info->bmiHeader.biSizeImage     = 0;
+    info->bmiHeader.biXPelsPerMeter = 0;
+    info->bmiHeader.biYPelsPerMeter = 0;
+    info->bmiHeader.biClrUsed       = 0;
+    info->bmiHeader.biClrImportant  = 0;
+    return &dummy_data;
+}
+
+static RECT *CDECL dummy_surface_get_bounds( struct window_surface *window_surface )
+{
+    static RECT dummy_bounds;
+    return &dummy_bounds;
+}
+
+static void CDECL dummy_surface_set_region( struct window_surface *window_surface, HRGN region )
+{
+    /* nothing to do */
+}
+
+static void CDECL dummy_surface_flush( struct window_surface *window_surface )
+{
+    /* nothing to do */
+}
+
+static void CDECL dummy_surface_destroy( struct window_surface *window_surface )
+{
+    /* nothing to do */
+}
+
+static const struct window_surface_funcs dummy_surface_funcs =
+{
+    dummy_surface_lock,
+    dummy_surface_unlock,
+    dummy_surface_get_bitmap_info,
+    dummy_surface_get_bounds,
+    dummy_surface_set_region,
+    dummy_surface_flush,
+    dummy_surface_destroy
+};
+
+struct window_surface dummy_surface = { &dummy_surface_funcs, { NULL, NULL }, 1, { 0, 0, 1, 1 } };
+
+/*******************************************************************
+ *           register_window_surface
+ *
+ * Register a window surface in the global list, possibly replacing another one.
+ */
+void register_window_surface( struct window_surface *old, struct window_surface *new )
+{
+    if (old == &dummy_surface) old = NULL;
+    if (new == &dummy_surface) new = NULL;
+    if (old == new) return;
+    pthread_mutex_lock( &surfaces_lock );
+    if (old) list_remove( &old->entry );
+    if (new) list_add_tail( &window_surfaces, &new->entry );
+    pthread_mutex_unlock( &surfaces_lock );
+}
+
+/*******************************************************************
+ *           flush_window_surfaces
+ *
+ * Flush pending output from all window surfaces.
+ */
+void flush_window_surfaces( BOOL idle )
+{
+    static DWORD last_idle;
+    DWORD now;
+    struct window_surface *surface;
+
+    pthread_mutex_lock( &surfaces_lock );
+    now = NtGetTickCount();
+    if (idle) last_idle = now;
+    /* if not idle, we only flush if there's evidence that the app never goes idle */
+    else if ((int)(now - last_idle) < 50) goto done;
+
+    LIST_FOR_EACH_ENTRY( surface, &window_surfaces, struct window_surface, entry )
+        surface->funcs->flush( surface );
+done:
+    pthread_mutex_unlock( &surfaces_lock );
+}
+
 /**********************************************************************
  *           NtUserWindowFromDC (win32u.@)
  */

dlls/win32u/win32u_private.h

@@ -280,6 +280,12 @@ extern BOOL get_clip_cursor( RECT *rect ) DECLSPEC_HIDDEN;
 extern ULONG_PTR get_icon_param( HICON handle ) DECLSPEC_HIDDEN;
 extern ULONG_PTR set_icon_param( HICON handle, ULONG_PTR param ) DECLSPEC_HIDDEN;
 
+/* dce.c */
+extern struct window_surface dummy_surface DECLSPEC_HIDDEN;
+extern void flush_window_surfaces( BOOL idle ) DECLSPEC_HIDDEN;
+extern void register_window_surface( struct window_surface *old,
+                                     struct window_surface *new ) DECLSPEC_HIDDEN;
+
 /* hook.c */
 extern LRESULT call_current_hook( HHOOK hhook, INT code, WPARAM wparam, LPARAM lparam ) DECLSPEC_HIDDEN;
 extern LRESULT call_hooks( INT id, INT code, WPARAM wparam, LPARAM lparam, BOOL unicode ) DECLSPEC_HIDDEN;
@@ -327,13 +333,10 @@ extern BOOL get_window_placement( HWND hwnd, WINDOWPLACEMENT *placement ) DECLSP
 extern DWORD get_window_thread( HWND hwnd, DWORD *process ) DECLSPEC_HIDDEN;
 extern HWND is_current_thread_window( HWND hwnd ) DECLSPEC_HIDDEN;
 extern BOOL is_iconic( HWND hwnd ) DECLSPEC_HIDDEN;
-extern void flush_window_surfaces( BOOL idle ) DECLSPEC_HIDDEN;
 extern DWORD get_window_long( HWND hwnd, INT offset ) DECLSPEC_HIDDEN;
 extern BOOL get_window_rect( HWND hwnd, RECT *rect, UINT dpi ) DECLSPEC_HIDDEN;
 extern HWND *list_window_children( HDESK desktop, HWND hwnd, UNICODE_STRING *class,
                                    DWORD tid ) DECLSPEC_HIDDEN;
-extern void register_window_surface( struct window_surface *old,
-                                     struct window_surface *new ) DECLSPEC_HIDDEN;
 extern void update_window_state( HWND hwnd ) DECLSPEC_HIDDEN;
 
 /* to release pointers retrieved by win_get_ptr */

dlls/win32u/window.c

@@ -23,7 +23,6 @@
 #pragma makedep unix
 #endif
 
-#include <pthread.h>
 #include <assert.h>
 
 #include "ntstatus.h"
@@ -40,9 +39,6 @@ WINE_DEFAULT_DEBUG_CHANNEL(win);
 
 static void *user_handles[NB_USER_HANDLES];
 
-static struct list window_surfaces = LIST_INIT( window_surfaces );
-static pthread_mutex_t surfaces_lock = PTHREAD_MUTEX_INITIALIZER;
-
 /***********************************************************************
  *           alloc_user_handle
  */
@@ -207,43 +203,6 @@ HWND get_full_window_handle( HWND hwnd )
 }
 
 /*******************************************************************
- *           register_window_surface
- *
- * Register a window surface in the global list, possibly replacing another one.
- */
-void register_window_surface( struct window_surface *old, struct window_surface *new )
-{
-    if (old == new) return;
-    pthread_mutex_lock( &surfaces_lock );
-    if (old) list_remove( &old->entry );
-    if (new) list_add_tail( &window_surfaces, &new->entry );
-    pthread_mutex_unlock( &surfaces_lock );
-}
-
-/*******************************************************************
- *           flush_window_surfaces
- *
- * Flush pending output from all window surfaces.
- */
-void flush_window_surfaces( BOOL idle )
-{
-    static DWORD last_idle;
-    DWORD now;
-    struct window_surface *surface;
-
-    pthread_mutex_lock( &surfaces_lock );
-    now = NtGetTickCount();
-    if (idle) last_idle = now;
-    /* if not idle, we only flush if there's evidence that the app never goes idle */
-    else if ((int)(now - last_idle) < 50) goto done;
-
-    LIST_FOR_EACH_ENTRY( surface, &window_surfaces, struct window_surface, entry )
-        surface->funcs->flush( surface );
-done:
-    pthread_mutex_unlock( &surfaces_lock );
-}
-
-/*******************************************************************
  *           is_desktop_window
  *
  * Check if window is the desktop or the HWND_MESSAGE top parent.
@@ -1896,6 +1855,8 @@ ULONG_PTR WINAPI NtUserCallHwnd( HWND hwnd, DWORD code )
     /* temporary exports */
     case NtUserCreateDesktopWindow:
         return user_driver->pCreateDesktopWindow( hwnd );
+    case NtUserGetDummySurface:
+        return (UINT_PTR)&dummy_surface;
     default:
         FIXME( "invalid code %u\n", code );
         return 0;

include/ntuser.h

@@ -151,6 +151,7 @@ enum
     NtUserIsWindowVisible,
     /* temporary exports */
     NtUserCreateDesktopWindow,
+    NtUserGetDummySurface,
 };
 
 /* NtUserCallHwndParam codes, not compatible with Windows */