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[~andy/gtk] / gdk / win32 / gdkgeometry-win32.c
index 8d75953efe72dea52b53a5c1ac75753872ba2837..749305c4ca498b51e8da8b8a573be7461849d547 100644 (file)
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
 /* gdkgeometry-win32.c: emulation of 32 bit coordinates within the
- * limits of Win32 GDI. Just a copy of the X11 version, more or less.
- * Probably totally bogus in functionality. Just a quick hack, to
- * get the thing to build. Need to write some test code for it.
- * Well, need to find out what it is supposed to do first ;-)
+ * limits of Win32 GDI. The idea of big window emulation is more or less
+ * a copy of the X11 version, and the equvalent of guffaw scrolling
+ * is ScrollWindowEx(). While we determine the invalidated region
+ * ourself during scrolling, we do not pass SW_INVALIDATE to
+ * ScrollWindowEx() to avoid a unnecessary WM_PAINT.
  *
+ * Bits are always scrolled correctly by ScrollWindowEx(), but
+ * some big children may hit the coordinate boundary (i.e.
+ * win32_x/win32_y < -16383) after scrolling. They needed to be moved
+ * back to the real position determined by gdk_window_compute_position().
+ * This is handled in gdk_window_postmove().
+ * 
  * The X11 version by Owen Taylor <otaylor@redhat.com>
  * Copyright Red Hat, Inc. 2000
  * Win32 hack by Tor Lillqvist <tml@iki.fi>
+ * and Hans Breuer <hans@breuer.org>
+ * Modified by Ivan, Wong Yat Cheung <email@ivanwong.info>
+ * so that big window emulation finally works.
  */
 
+#include "config.h"
 #include "gdk.h"               /* For gdk_rectangle_intersect */
-#include "gdkregion.h"
-#include "gdkregion-generic.h"
 #include "gdkinternals.h"
 #include "gdkprivate-win32.h"
-#include "gdkdrawable-win32.h"
-#include "gdkwindow-win32.h"
+#include "gdkwin32.h"
 
-#define SIZE_LIMIT 32000
+#define SIZE_LIMIT 32767
 
-typedef struct _GdkWindowQueueItem GdkWindowQueueItem;
 typedef struct _GdkWindowParentPos GdkWindowParentPos;
 
-typedef enum {
-  GDK_WINDOW_QUEUE_TRANSLATE,
-  GDK_WINDOW_QUEUE_ANTIEXPOSE
-} GdkWindowQueueType;
-
-struct _GdkWindowQueueItem
-{
-  GdkWindow *window;
-  gulong serial;
-  GdkWindowQueueType type;
-  union {
-    struct {
-      gint dx;
-      gint dy;
-    } translate;
-    struct {
-      GdkRegion *area;
-    } antiexpose;
-  } u;
-};
-
-struct _GdkWindowParentPos
-{
-  gint x;
-  gint y;
-  gint win32_x;
-  gint win32_y;
-  GdkRectangle clip_rect;
-};
-
-static void gdk_window_compute_position   (GdkWindowImplWin32   *window,
-                                          GdkWindowParentPos   *parent_pos,
-                                          GdkWin32PositionInfo *info);
-static void gdk_window_compute_parent_pos (GdkWindowImplWin32 *window,
-                                          GdkWindowParentPos *parent_pos);
-static void gdk_window_premove            (GdkWindow          *window,
-                                          GdkWindowParentPos *parent_pos);
-static void gdk_window_postmove           (GdkWindow          *window,
-                                          GdkWindowParentPos *parent_pos);
-static void gdk_window_queue_translation  (GdkWindow          *window,
-                                          gint                dx,
-                                          gint                dy);
-static void gdk_window_tmp_unset_bg       (GdkWindow          *window);
-static void gdk_window_tmp_reset_bg       (GdkWindow          *window);
-static void gdk_window_clip_changed       (GdkWindow          *window,
-                                          GdkRectangle       *old_clip,
-                                          GdkRectangle       *new_clip);
-
-static GSList *translate_queue = NULL;
-
-void
-_gdk_windowing_window_get_offsets (GdkWindow *window,
-                                  gint      *x_offset,
-                                  gint      *y_offset)
-{
-  GdkWindowImplWin32 *impl =
-    GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (window)->impl);
-
-  *x_offset = impl->position_info.x_offset;
-  *y_offset = impl->position_info.y_offset;
-}
-
-void
-_gdk_window_init_position (GdkWindow *window)
-{
-  GdkWindowParentPos parent_pos;
-  GdkWindowImplWin32 *impl;
-
-  g_return_if_fail (GDK_IS_WINDOW (window));
-
-  impl = GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (window)->impl);
-
-  gdk_window_compute_parent_pos (impl, &parent_pos);
-  gdk_window_compute_position (impl, &parent_pos, &impl->position_info);
-}
-
-/**
- * gdk_window_scroll:
- * @window: a #GdkWindow
- * @dx: Amount to scroll in the X direction
- * @dy: Amount to scroll in the Y direction
- * 
- * Scroll the contents of its window, both pixels and children, by
- * the given amount. Portions of the window that the scroll operation
- * brings in from offscreen areas are invalidated. The invalidated
- * region may be bigger than what would strictly be necessary.
- * (For X11, a minimum area will be invalidated if the window has
- * no subwindows, or if the edges of the window's parent do not extend
- * beyond the edges of the window. In other cases, a multi-step process
- * is used to scroll the window which may produce temporary visual
- * artifacts and unnecessary invalidations.)
- **/
-void
-gdk_window_scroll (GdkWindow *window,
-                  gint       dx,
-                  gint       dy)
-{
-  gboolean can_guffaw_scroll = FALSE;
-  GdkWindowImplWin32 *impl;
-  GdkWindowObject *obj;
-  
-  g_return_if_fail (GDK_IS_WINDOW (window));
-
-  obj = GDK_WINDOW_OBJECT (window);
-  impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);  
-  
-  if (GDK_WINDOW_DESTROYED (window))
-    return;
-
-  /* Move the current invalid region */
-  if (obj->update_area)
-    gdk_region_offset (obj->update_area, dx, dy);
-
-  /* We can guffaw scroll if we are a child window, and the parent
-   * does not extend beyond our edges.
-   */
-  
-  if (GDK_WINDOW_TYPE (window) == GDK_WINDOW_CHILD)
-    {
-      GdkWindowImplWin32 *parent_impl = GDK_WINDOW_IMPL_WIN32 (obj->parent->impl);  
-      can_guffaw_scroll = (obj->x <= 0 &&
-                          obj->y <= 0 &&
-                          obj->x + impl->width >= parent_impl->width &&
-                          obj->y + impl->height >= parent_impl->height);
-    }
-
-  if (!obj->children || !can_guffaw_scroll)
-    {
-#if 0 /* this may be the better way to do it, though there seems to 
-         be an offset error in it */
-      GList *tmp_list = obj->children;
-      int num_windows = g_list_length (tmp_list) + 1;
-      HDWP hWinPosInfo = BeginDeferWindowPos (num_windows);
-
-      GDK_NOTE (MISC, 
-                g_print ("gdk_window_scroll (%x, %d, %d), %d childs\n",
-                         GDK_WINDOW_HWND (window), dx, dy, num_windows -1));
-      if (!hWinPosInfo)
-        WIN32_API_FAILED ("BeginDeferWindowPos");
-      else
-        {
-
-          hWinPosInfo = 
-            DeferWindowPos (hWinPosInfo, /* may change on return */
-                            GDK_WINDOW_HWND (window),
-                            NULL, /* placement-order handle, ignored */
-                            obj->x + dx, obj->y + dy, /* new pos */
-                            30, 20,  /* new size, ignored */
-                            SWP_NOSIZE | SWP_NOZORDER);
-
-          while (tmp_list)
-           {
-             GdkWindowObject * child = GDK_WINDOW_OBJECT (tmp_list->data);
-         
-              hWinPosInfo = 
-                DeferWindowPos (hWinPosInfo, /* may change on return */
-                                GDK_WINDOW_HWND (child),
-                                NULL, /* placement-order handle, ignored */
-                                child->x + dx, child->y + dy, /* new pos */
-                                30, 20,  /* new size, ignored */
-                                SWP_NOSIZE | SWP_NOZORDER);
-         
-             tmp_list = tmp_list->next;
-           }
-
-          if (!EndDeferWindowPos (hWinPosInfo))
-           WIN32_API_FAILED ("EndDeferWindowPos");
-       }
-#else
-      /* Use ScrollWindowEx, then move any children later
-       */
-      GList *tmp_list;
-      GdkRegion *invalidate_region;
-      GdkRectangle dest_rect;
-
-      invalidate_region = gdk_region_rectangle (&impl->position_info.clip_rect);
-      
-      dest_rect = impl->position_info.clip_rect;
-      dest_rect.x += dx;
-      dest_rect.y += dy;
-      gdk_rectangle_intersect (&dest_rect, &impl->position_info.clip_rect, &dest_rect);
-
-      if (dest_rect.width > 0 && dest_rect.height > 0)
-       {
-         GdkRegion *tmp_region;
-
-         tmp_region = gdk_region_rectangle (&dest_rect);
-         gdk_region_subtract (invalidate_region, tmp_region);
-         gdk_region_destroy (tmp_region);
-         
-         gdk_window_queue_translation (window, dx, dy);
-
-         if (ScrollWindowEx (GDK_WINDOW_HWND (window), dx, dy,
-                             NULL, NULL, NULL, NULL, 0) == ERROR)
-           WIN32_API_FAILED ("ScrollWindowEx");
-       }
-
-      gdk_window_invalidate_region (window, invalidate_region, TRUE);
-      gdk_region_destroy (invalidate_region);
-
-      tmp_list = obj->children;
-      while (tmp_list)
-       {
-         GdkWindow * child = GDK_WINDOW (tmp_list->data);
-         
-         gdk_window_move (child, obj->x + dx, obj->y + dy);
-         
-         tmp_list = tmp_list->next;
-       }
-#endif
-    }
-  else
-    {
-      /* Guffaw scroll
-       */
-      g_warning ("gdk_window_scroll(): guffaw scrolling not yet implemented");
-    }
-}
+static void tmp_unset_bg (GdkWindow *window);
+static void tmp_reset_bg (GdkWindow *window);
 
 void
 _gdk_window_move_resize_child (GdkWindow *window,
@@ -268,646 +57,127 @@ _gdk_window_move_resize_child (GdkWindow *window,
                               gint       height)
 {
   GdkWindowImplWin32 *impl;
-  GdkWindowObject *obj;
-  GdkWin32PositionInfo new_info;
-  GdkWindowParentPos parent_pos;
-  RECT rect;
-  GList *tmp_list;
-  gint d_xoffset, d_yoffset;
-  gint dx, dy;
-  gboolean is_move;
-  gboolean is_resize;
-  
+
   g_return_if_fail (window != NULL);
   g_return_if_fail (GDK_IS_WINDOW (window));
 
-  obj = GDK_WINDOW_OBJECT (window);
-  impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
-
-  dx = x - obj->x;
-  dy = y - obj->y;
-  
-  is_move = dx != 0 || dy != 0;
-  is_resize = impl->width != width || impl->height != height;
-
-  if (!is_move && !is_resize)
-    return;
-  
-  obj->x = x;
-  obj->y = y;
-  impl->width = width;
-  impl->height = height;
-
-  gdk_window_compute_parent_pos (impl, &parent_pos);
-  gdk_window_compute_position (impl, &parent_pos, &new_info);
-
-  gdk_window_clip_changed (window, &impl->position_info.clip_rect, &new_info.clip_rect);
+  impl = GDK_WINDOW_IMPL_WIN32 (window->impl);
 
-  parent_pos.x += obj->x;
-  parent_pos.y += obj->y;
-  parent_pos.win32_x += new_info.x;
-  parent_pos.win32_y += new_info.y;
-  parent_pos.clip_rect = new_info.clip_rect;
+  GDK_NOTE (MISC, g_print ("_gdk_window_move_resize_child: %s@%+d%+d %dx%d@%+d%+d\n",
+                          _gdk_win32_window_description (window),
+                          window->x, window->y, width, height, x, y));
 
-  d_xoffset = new_info.x_offset - impl->position_info.x_offset;
-  d_yoffset = new_info.y_offset - impl->position_info.y_offset;
-  
-  if (d_xoffset != 0 || d_yoffset != 0)
-    {
-      gint new_x0, new_y0, new_x1, new_y1;
-
-      gdk_window_set_static_gravities (window, TRUE);
-
-      if (d_xoffset < 0 || d_yoffset < 0)
-       gdk_window_queue_translation (window, MIN (d_xoffset, 0), MIN (d_yoffset, 0));
-       
-      if (d_xoffset < 0)
-       {
-         new_x0 = impl->position_info.x + d_xoffset;
-         new_x1 = impl->position_info.x + impl->position_info.width;
-       }
-      else
-       {
-         new_x0 = impl->position_info.x;
-         new_x1 = impl->position_info.x + new_info.width + d_xoffset;
-       }
-
-      if (d_yoffset < 0)
-       {
-         new_y0 = impl->position_info.y + d_yoffset;
-         new_y1 = impl->position_info.y + impl->position_info.height;
-       }
-      else
-       {
-         new_y0 = impl->position_info.y;
-         new_y1 = impl->position_info.y + new_info.height + d_yoffset;
-       }
-      
-      if (!SetWindowPos (GDK_WINDOW_HWND (window), NULL,
-                      new_x0, new_y0, new_x1 - new_x0, new_y1 - new_y0,
-                      SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOREDRAW))
-         WIN32_API_FAILED ("SetWindowPos");
-      
-      tmp_list = obj->children;
-      while (tmp_list)
-       {
-         gdk_window_premove (tmp_list->data, &parent_pos);
-         tmp_list = tmp_list->next;
-       }
-
-      if (!SetWindowPos (GDK_WINDOW_HWND (window), NULL,
-                      new_x0 + dx, new_y0 + dy, 0, 0,
-                      SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOSIZE | SWP_NOREDRAW))
-         WIN32_API_FAILED ("SetWindowPos");
-      
-      if (d_xoffset > 0 || d_yoffset > 0)
-       gdk_window_queue_translation (window, MAX (d_xoffset, 0), MAX (d_yoffset, 0));
-
-      /* FIXME: 
-       */
-      if (new_info.x + new_info.width > SIZE_LIMIT)
-        new_info.width = SIZE_LIMIT - new_info.x;
-      if (new_info.y + new_info.height > SIZE_LIMIT)
-        new_info.height = SIZE_LIMIT - new_info.y;
-
-      if (!SetWindowPos (GDK_WINDOW_HWND (window), NULL,
-                      new_info.x, new_info.y, new_info.width, new_info.height,
-                      SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOREDRAW))
-         WIN32_API_FAILED ("SetWindowPos");
-      
-      if (impl->position_info.no_bg)
-       gdk_window_tmp_reset_bg (window);
-
-      if (!impl->position_info.mapped && new_info.mapped && GDK_WINDOW_IS_MAPPED (obj))
-       ShowWindow (GDK_WINDOW_HWND (window), SW_SHOWNA);
-      
-      impl->position_info = new_info;
-      
-      tmp_list = obj->children;
-      while (tmp_list)
-       {
-         gdk_window_postmove (tmp_list->data, &parent_pos);
-         tmp_list = tmp_list->next;
-       }
-    }
-  else
-    {
-      if (is_move && is_resize)
-       gdk_window_set_static_gravities (window, FALSE);
-
-      if (impl->position_info.mapped && !new_info.mapped)
-       ShowWindow (GDK_WINDOW_HWND (window), SW_HIDE);
-      
-      tmp_list = obj->children;
-      while (tmp_list)
-       {
-         gdk_window_premove (tmp_list->data, &parent_pos);
-         tmp_list = tmp_list->next;
-       }
-
-      if (!SetWindowPos (GDK_WINDOW_HWND (window), NULL,
-                          new_info.x, new_info.y, new_info.width, new_info.height,
-                          SWP_NOACTIVATE | SWP_NOZORDER |
-                          (is_resize ? 0 : SWP_NOSIZE)))
-         WIN32_API_FAILED ("SetWindowPos");
-
-      tmp_list = obj->children;
-      while (tmp_list)
-       {
-         gdk_window_postmove (tmp_list->data, &parent_pos);
-         tmp_list = tmp_list->next;
-       }
-
-      if (impl->position_info.no_bg)
-       gdk_window_tmp_reset_bg (window);
-
-      if (!impl->position_info.mapped && new_info.mapped && GDK_WINDOW_IS_MAPPED (obj))
-       ShowWindow (GDK_WINDOW_HWND (window), SW_SHOWNA);
-
-      impl->position_info = new_info;
-    }
-}
+  if (width > 65535 || height > 65535)
+  {
+    g_warning ("Native children wider or taller than 65535 pixels are not supported.");
 
-static void
-gdk_window_compute_position (GdkWindowImplWin32   *window,
-                            GdkWindowParentPos   *parent_pos,
-                            GdkWin32PositionInfo *info)
-{
-  GdkWindowObject *wrapper;
-  int parent_x_offset;
-  int parent_y_offset;
-  
-  g_return_if_fail (GDK_IS_WINDOW_IMPL_WIN32 (window));
+    if (width > 65535)
+      width = 65535;
+    if (height > 65535)
+      height = 65535;
+  }
 
-  wrapper = GDK_WINDOW_OBJECT (GDK_DRAWABLE_IMPL_WIN32 (window)->wrapper);
+  window->x = x;
+  window->y = y;
+  window->width = width;
+  window->height = height;
 
-  info->big = FALSE;
+  _gdk_win32_window_tmp_unset_parent_bg (window);
+  _gdk_win32_window_tmp_unset_bg (window, TRUE);
   
-  if (window->width <= SIZE_LIMIT)
-    {
-      info->width = window->width;
-      info->x = parent_pos->x + wrapper->x - parent_pos->win32_x;
-    }
-  else
-    {
-      info->big = TRUE;
-      info->width = SIZE_LIMIT;
-      if (parent_pos->x + wrapper->x < -(SIZE_LIMIT/2))
-       {
-         if (parent_pos->x + wrapper->x + window->width < (SIZE_LIMIT/2))
-           info->x = parent_pos->x + wrapper->x + window->width - SIZE_LIMIT - parent_pos->win32_x;
-         else
-           info->x = -(SIZE_LIMIT/2) - parent_pos->win32_y;
-       }
-      else
-       info->x = parent_pos->x + wrapper->x - parent_pos->win32_x;
-    }
+  GDK_NOTE (MISC, g_print ("... SetWindowPos(%p,NULL,%d,%d,%d,%d,"
+                          "NOACTIVATE|NOZORDER)\n",
+                          GDK_WINDOW_HWND (window),
+                          window->x + window->parent->abs_x, window->y + window->parent->abs_y, 
+                          width, height));
 
-  if (window->height <= SIZE_LIMIT)
-    {
-      info->height = window->height;
-      info->y = parent_pos->y + wrapper->y - parent_pos->win32_y;
-    }
-  else
-    {
-      info->big = TRUE;
-      info->height = SIZE_LIMIT;
-      if (parent_pos->y + wrapper->y < -(SIZE_LIMIT/2))
-       {
-         if (parent_pos->y + wrapper->y + window->height < (SIZE_LIMIT/2))
-           info->y = parent_pos->y + wrapper->y + window->height - SIZE_LIMIT - parent_pos->win32_y;
-         else
-           info->y = -(SIZE_LIMIT/2) - parent_pos->win32_y;
-       }
-      else
-       info->y = parent_pos->y + wrapper->y - parent_pos->win32_y;
-    }
+  API_CALL (SetWindowPos, (GDK_WINDOW_HWND (window), NULL,
+                          window->x + window->parent->abs_x, window->y + window->parent->abs_y, 
+                          width, height,
+                          SWP_NOACTIVATE | SWP_NOZORDER));
 
-  parent_x_offset = parent_pos->win32_x - parent_pos->x;
-  parent_y_offset = parent_pos->win32_y - parent_pos->y;
-  
-  info->x_offset = parent_x_offset + info->x - wrapper->x;
-  info->y_offset = parent_y_offset + info->y - wrapper->y;
-
-  /* We don't considering the clipping of toplevel windows and their immediate children
-   * by their parents, and simply always map those windows.
-   */
-  if (parent_pos->clip_rect.width == G_MAXINT)
-    info->mapped = TRUE;
-  /* Check if the window would wrap around into the visible space in either direction */
-  else if (info->x + parent_x_offset < parent_pos->clip_rect.x + parent_pos->clip_rect.width - 65536 ||
-      info->x + info->width + parent_x_offset > parent_pos->clip_rect.x + 65536 ||
-      info->y + parent_y_offset < parent_pos->clip_rect.y + parent_pos->clip_rect.height - 65536 ||
-      info->y + info->height + parent_y_offset  > parent_pos->clip_rect.y + 65536)
-    info->mapped = FALSE;
-  else
-    info->mapped = TRUE;
-
-  info->no_bg = FALSE;
-
-  if (GDK_WINDOW_TYPE (wrapper) == GDK_WINDOW_CHILD)
-    {
-      info->clip_rect.x = wrapper->x;
-      info->clip_rect.y = wrapper->y;
-      info->clip_rect.width = window->width;
-      info->clip_rect.height = window->height;
-      
-      gdk_rectangle_intersect (&info->clip_rect, &parent_pos->clip_rect, &info->clip_rect);
-
-      info->clip_rect.x -= wrapper->x;
-      info->clip_rect.y -= wrapper->y;
-    }
-  else
-    {
-      info->clip_rect.x = 0;
-      info->clip_rect.y = 0;
-      info->clip_rect.width = G_MAXINT;
-      info->clip_rect.height = G_MAXINT;
-    }
+  _gdk_win32_window_tmp_reset_bg (window, TRUE);
 }
 
-static void
-gdk_window_compute_parent_pos (GdkWindowImplWin32 *window,
-                              GdkWindowParentPos *parent_pos)
+void
+_gdk_win32_window_tmp_unset_bg (GdkWindow *window,
+                               gboolean recurse)
 {
-  GdkWindowObject *wrapper;
-  GdkWindowObject *parent;
-  GdkRectangle tmp_clip;
-  
-  int clip_xoffset = 0;
-  int clip_yoffset = 0;
-
-  g_return_if_fail (GDK_IS_WINDOW_IMPL_WIN32 (window));
-
-  wrapper = GDK_WINDOW_OBJECT (GDK_DRAWABLE_IMPL_WIN32 (window)->wrapper);
-  
-  parent_pos->x = 0;
-  parent_pos->y = 0;
-  parent_pos->win32_x = 0;
-  parent_pos->win32_y = 0;
-
-  /* We take a simple approach here and simply consider toplevel
-   * windows not to clip their children on the right/bottom, since the
-   * size of toplevel windows is not directly under our
-   * control. Clipping only really matters when scrolling and
-   * generally we aren't going to be moving the immediate child of a
-   * toplevel beyond the bounds of that toplevel.
-   *
-   * We could go ahead and recompute the clips of toplevel windows and
-   * their descendents when we receive size notification, but it would
-   * probably not be an improvement in most cases.
-   */
-  parent_pos->clip_rect.x = 0;
-  parent_pos->clip_rect.y = 0;
-  parent_pos->clip_rect.width = G_MAXINT;
-  parent_pos->clip_rect.height = G_MAXINT;
-
-  parent = (GdkWindowObject *)wrapper->parent;
-  while (parent && parent->window_type == GDK_WINDOW_CHILD)
-    {
-      GdkWindowImplWin32 *impl = GDK_WINDOW_IMPL_WIN32 (parent->impl);
-      
-      tmp_clip.x = - clip_xoffset;
-      tmp_clip.y = - clip_yoffset;
-      tmp_clip.width = impl->width;
-      tmp_clip.height = impl->height;
+  g_return_if_fail (GDK_IS_WINDOW (window));
 
-      gdk_rectangle_intersect (&parent_pos->clip_rect, &tmp_clip, &parent_pos->clip_rect);
+  if (window->input_only || window->destroyed ||
+      (window->window_type != GDK_WINDOW_ROOT &&
+       !GDK_WINDOW_IS_MAPPED (window)))
+    return;
 
-      parent_pos->x += parent->x;
-      parent_pos->y += parent->y;
-      parent_pos->win32_x += impl->position_info.x;
-      parent_pos->win32_y += impl->position_info.y;
+  if (_gdk_window_has_impl (window) &&
+      GDK_WINDOW_IS_WIN32 (window) &&
+      window->window_type != GDK_WINDOW_ROOT &&
+      window->window_type != GDK_WINDOW_FOREIGN)
+    tmp_unset_bg (window);
 
-      clip_xoffset += parent->x;
-      clip_yoffset += parent->y;
+  if (recurse)
+    {
+      GList *l;
 
-      parent = (GdkWindowObject *)parent->parent;
+      for (l = window->children; l != NULL; l = l->next)
+       _gdk_win32_window_tmp_unset_bg (l->data, TRUE);
     }
 }
 
 static void
-gdk_window_premove (GdkWindow          *window,
-                   GdkWindowParentPos *parent_pos)
+tmp_unset_bg (GdkWindow *window)
 {
   GdkWindowImplWin32 *impl;
-  GdkWindowObject *obj;
-  GdkWin32PositionInfo new_info;
-  GList *tmp_list;
-  gint d_xoffset, d_yoffset;
-  GdkWindowParentPos this_pos;
-  
-  obj = (GdkWindowObject *) window;
-  impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
-  
-  gdk_window_compute_position (impl, parent_pos, &new_info);
-
-  gdk_window_clip_changed (window, &impl->position_info.clip_rect, &new_info.clip_rect);
-
-  this_pos.x = parent_pos->x + obj->x;
-  this_pos.y = parent_pos->y + obj->y;
-  this_pos.win32_x = parent_pos->win32_x + new_info.x;
-  this_pos.win32_y = parent_pos->win32_y + new_info.y;
-  this_pos.clip_rect = new_info.clip_rect;
 
-  if (impl->position_info.mapped && !new_info.mapped)
-    ShowWindow (GDK_WINDOW_HWND (window), SW_HIDE);
+  impl = GDK_WINDOW_IMPL_WIN32 (window->impl);
 
-  d_xoffset = new_info.x_offset - impl->position_info.x_offset;
-  d_yoffset = new_info.y_offset - impl->position_info.y_offset;
-  
-  if (d_xoffset != 0 || d_yoffset != 0)
-    {
-      gint new_x0, new_y0, new_x1, new_y1;
-
-      if (d_xoffset < 0 || d_yoffset < 0)
-       gdk_window_queue_translation (window, MIN (d_xoffset, 0), MIN (d_yoffset, 0));
-       
-      if (d_xoffset < 0)
-       {
-         new_x0 = impl->position_info.x + d_xoffset;
-         new_x1 = impl->position_info.x + impl->position_info.width;
-       }
-      else
-       {
-         new_x0 = impl->position_info.x;
-         new_x1 = impl->position_info.x + new_info.width + d_xoffset;
-       }
-
-      if (d_yoffset < 0)
-       {
-         new_y0 = impl->position_info.y + d_yoffset;
-         new_y1 = impl->position_info.y + impl->position_info.height;
-       }
-      else
-       {
-         new_y0 = impl->position_info.y;
-         new_y1 = impl->position_info.y + new_info.height + d_yoffset;
-       }
-
-      if (!SetWindowPos (GDK_WINDOW_HWND (window), NULL,
-                      new_x0, new_y0, new_x1 - new_x0, new_y1 - new_y0,
-                      SWP_NOREDRAW | SWP_NOZORDER | SWP_NOACTIVATE))
-       WIN32_API_FAILED ("SetWindowPos");
-    }
-
-  tmp_list = obj->children;
-  while (tmp_list)
-    {
-      gdk_window_premove (tmp_list->data, &this_pos);
-      tmp_list = tmp_list->next;
-    }
+  impl->no_bg = TRUE;
 }
 
 static void
-gdk_window_postmove (GdkWindow          *window,
-                    GdkWindowParentPos *parent_pos)
+tmp_reset_bg (GdkWindow *window)
 {
   GdkWindowImplWin32 *impl;
-  GdkWindowObject *obj;
-  GdkWin32PositionInfo new_info;
-  GList *tmp_list;
-  gint d_xoffset, d_yoffset;
-  GdkWindowParentPos this_pos;
-  
-  obj = (GdkWindowObject *) window;
-  impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
-  
-  gdk_window_compute_position (impl, parent_pos, &new_info);
-
-  this_pos.x = parent_pos->x + obj->x;
-  this_pos.y = parent_pos->y + obj->y;
-  this_pos.win32_x = parent_pos->win32_x + new_info.x;
-  this_pos.win32_y = parent_pos->win32_y + new_info.y;
-  this_pos.clip_rect = new_info.clip_rect;
-
-  d_xoffset = new_info.x_offset - impl->position_info.x_offset;
-  d_yoffset = new_info.y_offset - impl->position_info.y_offset;
-  
-  if (d_xoffset != 0 || d_yoffset != 0)
-    {
-      if (d_xoffset > 0 || d_yoffset > 0)
-       gdk_window_queue_translation (window, MAX (d_xoffset, 0), MAX (d_yoffset, 0));
-       
-      if (!SetWindowPos (GDK_WINDOW_HWND (window), NULL,
-                      new_info.x, new_info.y, new_info.width, new_info.height,
-                      SWP_NOREDRAW | SWP_NOZORDER | SWP_NOACTIVATE))
-       WIN32_API_FAILED ("SetWindowPos");
-    }
-
-  if (!impl->position_info.mapped && new_info.mapped && GDK_WINDOW_IS_MAPPED (obj))
-    ShowWindow (GDK_WINDOW_HWND (window), SW_SHOWNA);
-
-  if (impl->position_info.no_bg)
-    gdk_window_tmp_reset_bg (window);
 
-  impl->position_info = new_info;
+  impl = GDK_WINDOW_IMPL_WIN32 (window->impl);
 
-  tmp_list = obj->children;
-  while (tmp_list)
-    {
-      gdk_window_postmove (tmp_list->data, &this_pos);
-      tmp_list = tmp_list->next;
-    }
+  impl->no_bg = FALSE;
 }
 
-static void
-gdk_window_queue_translation (GdkWindow *window,
-                             gint       dx,
-                             gint       dy)
+void
+_gdk_win32_window_tmp_unset_parent_bg (GdkWindow *window)
 {
-  GdkWindowQueueItem *item = g_new (GdkWindowQueueItem, 1);
-  item->window = window;
-  item->serial = GetMessageTime ();
-  item->type = GDK_WINDOW_QUEUE_TRANSLATE;
-  item->u.translate.dx = dx;
-  item->u.translate.dy = dy;
-
-  GDK_NOTE (EVENTS, g_print ("gdk_window_queue_translation %#x %ld %d,%d\n",
-                            (guint) GDK_WINDOW_HWND (window),
-                            item->serial,
-                            dx, dy));
-
-  gdk_drawable_ref (window);
-  translate_queue = g_slist_append (translate_queue, item);
-}
+  if (GDK_WINDOW_TYPE (window->parent) == GDK_WINDOW_ROOT)
+    return;
 
-gboolean
-_gdk_windowing_window_queue_antiexpose (GdkWindow *window,
-                                       GdkRegion *area)
-{
-#if 1
-  GdkWindowQueueItem *item = g_new (GdkWindowQueueItem, 1);
-
-  item->window = window;
-  item->serial = GetMessageTime ();
-  item->type = GDK_WINDOW_QUEUE_ANTIEXPOSE;
-  item->u.antiexpose.area = area;
-
-  GDK_NOTE (EVENTS, g_print ("_gdk_windowing_window_queue_antiexpose %#x %ld %dx%d@+%d+%d\n",
-                            (guint) GDK_WINDOW_HWND (window),
-                            item->serial,
-                            area->extents.x2 - area->extents.x1,
-                            area->extents.y2 - area->extents.y1,
-                            area->extents.x1, area->extents.y1));
-
-  gdk_drawable_ref (window);
-  translate_queue = g_slist_append (translate_queue, item);
-
-  return TRUE;
-#else
-  GdkRectangle r;
-  HRGN hrgn;
-
-  gdk_region_get_clipbox (area, &r);
-  hrgn = CreateRectRgn(r.x, r.y, r.width+1, r.height+1);
-
-  g_return_val_if_fail (area != NULL, FALSE);
-
-  GDK_NOTE (MISC, g_print ("_gdk_windowing_window_queue_antiexpose %#x\n",
-                          (guint) GDK_WINDOW_HWND (window)));
-
-  /* HB: not quite sure if this is the right thing to do.
-   * (Region not to be proceesed by next WM_PAINT)
-   */
-  ValidateRgn(GDK_WINDOW_HWND (window), hrgn);
-  DeleteObject(hrgn);
-  return TRUE;
-#endif
+  window = _gdk_window_get_impl_window (window->parent);
+  _gdk_win32_window_tmp_unset_bg (window, FALSE);
 }
 
 void
-_gdk_window_process_expose (GdkWindow    *window,
-                           gulong        serial,
-                           GdkRectangle *area)
+_gdk_win32_window_tmp_reset_bg (GdkWindow *window,
+                               gboolean   recurse)
 {
-  GdkWindowImplWin32 *impl;
-  GdkRegion *invalidate_region = gdk_region_rectangle (area);
-  GdkRegion *clip_region;
-  GSList *tmp_list = translate_queue;
+  g_return_if_fail (GDK_IS_WINDOW (window));
 
-  impl = GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (window)->impl);
-  
-  GDK_NOTE (EVENTS, g_print ("_gdk_window_process_expose %#x %ld %dx%d@+%d+%d\n",
-                            (guint) GDK_WINDOW_HWND (window), serial,
-                            area->width, area->height, area->x, area->y));
+  if (window->input_only || window->destroyed ||
+      (window->window_type != GDK_WINDOW_ROOT && !GDK_WINDOW_IS_MAPPED (window)))
+    return;
 
-  while (tmp_list)
+  if (_gdk_window_has_impl (window) &&
+      GDK_WINDOW_IS_WIN32 (window) &&
+      window->window_type != GDK_WINDOW_ROOT &&
+      window->window_type != GDK_WINDOW_FOREIGN)
     {
-      GdkWindowQueueItem *item = tmp_list->data;
-      tmp_list = tmp_list->next;
-
-      if (serial < item->serial)
-       {
-         if (item->window == window)
-           {
-             if (item->type == GDK_WINDOW_QUEUE_TRANSLATE)
-               gdk_region_offset (invalidate_region, - item->u.translate.dx, - item->u.translate.dy);
-             else              /* anti-expose */
-               gdk_region_subtract (invalidate_region, item->u.antiexpose.area);
-           }
-       }
-      else
-       {
-         GSList *tmp_link = translate_queue;
-         
-         translate_queue = g_slist_remove_link (translate_queue, translate_queue);
-         gdk_drawable_unref (item->window);
-
-         if (item->type == GDK_WINDOW_QUEUE_ANTIEXPOSE)
-           gdk_region_destroy (item->u.antiexpose.area);
-         
-         g_free (item);
-         g_slist_free_1 (tmp_link);
-       }
+      tmp_reset_bg (window);
     }
 
-  clip_region = gdk_region_rectangle (&impl->position_info.clip_rect);
-  gdk_region_intersect (invalidate_region, clip_region);
-
-  if (!gdk_region_empty (invalidate_region))
-    gdk_window_invalidate_region (window, invalidate_region, FALSE);
-
-  gdk_region_destroy (invalidate_region);
-  gdk_region_destroy (clip_region);
-}
-
-static void
-gdk_window_tmp_unset_bg (GdkWindow *window)
-{
-  GdkWindowImplWin32 *impl;
-  GdkWindowObject *obj;
-
-  obj = (GdkWindowObject *) window;
-  impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
-
-  impl->position_info.no_bg = TRUE;
-
-  /*
-   * The X version sets background = None to avoid updateing for a moment.
-   * Not sure if this could really emulate it.
-   */
-  if (obj->bg_pixmap != GDK_NO_BG)
-    /* handled in WM_ERASEBKGRND proceesing */;
-}
-
-static void
-gdk_window_tmp_reset_bg (GdkWindow *window)
-{
-  GdkWindowImplWin32 *impl;
-  GdkWindowObject *obj;
-
-  obj = (GdkWindowObject *) window;
-  impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
-
-  impl->position_info.no_bg = FALSE;
-
-  if (obj->bg_pixmap == GDK_NO_BG)
-    return;
-  
-  if (obj->bg_pixmap)
+  if (recurse)
     {
-      /* ??? */
-    }
-  else
-    {
-      /* ??? */
-    }
-}
+      GList *l;
 
-static void
-gdk_window_clip_changed (GdkWindow    *window,
-                        GdkRectangle *old_clip,
-                        GdkRectangle *new_clip)
-{
-  GdkWindowImplWin32 *impl;
-  GdkWindowObject *obj;
-  GdkRegion *old_clip_region;
-  GdkRegion *new_clip_region;
-
-  if (((GdkWindowObject *)window)->input_only)
-    return;
-
-  obj = (GdkWindowObject *) window;
-  impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
-  
-  old_clip_region = gdk_region_rectangle (old_clip);
-  new_clip_region = gdk_region_rectangle (new_clip);
-
-  /* Trim invalid region of window to new clip rectangle
-   */
-  if (obj->update_area)
-    gdk_region_intersect (obj->update_area, new_clip_region);
-
-  /* Invalidate newly exposed portion of window
-   */
-  gdk_region_subtract (new_clip_region, old_clip_region);
-  if (!gdk_region_empty (new_clip_region))
-    {
-      gdk_window_tmp_unset_bg (window);
-      gdk_window_invalidate_region (window, new_clip_region, FALSE);
+      for (l = window->children; l != NULL; l = l->next)
+       _gdk_win32_window_tmp_reset_bg (l->data, TRUE);
     }
-
-  gdk_region_destroy (new_clip_region);
-  gdk_region_destroy (old_clip_region);
 }