gdkwindow-quartz.c 69.2 KB
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/* gdkwindow-quartz.c
 *
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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 * Copyright (C) 2005-2007 Imendio AB
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 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * 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.
 */

#include <config.h>
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#include <Carbon/Carbon.h>
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#include "gdk.h"
#include "gdkprivate-quartz.h"

static gpointer parent_class;

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static GSList *update_windows;
static guint   update_idle;

static GSList *main_window_stack;
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static void update_toplevel_order (void);
static void clear_toplevel_order (void);

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#define WINDOW_IS_TOPLEVEL(window)		   \
  (GDK_WINDOW_TYPE (window) != GDK_WINDOW_CHILD && \
   GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
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NSView *
gdk_quartz_window_get_nsview (GdkWindow *window)
{
  GdkWindowObject *private = (GdkWindowObject *)window;

  return ((GdkWindowImplQuartz *)private->impl)->view;
}

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static void
gdk_window_impl_quartz_get_size (GdkDrawable *drawable,
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				 gint        *width,
				 gint        *height)
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{
  g_return_if_fail (GDK_IS_WINDOW_IMPL_QUARTZ (drawable));

  if (width)
    *width = GDK_WINDOW_IMPL_QUARTZ (drawable)->width;
  if (height)
    *height = GDK_WINDOW_IMPL_QUARTZ (drawable)->height;
}

static GdkRegion*
gdk_window_impl_quartz_get_visible_region (GdkDrawable *drawable)
{
  GdkWindowObject *private = GDK_WINDOW_OBJECT (GDK_DRAWABLE_IMPL_QUARTZ (drawable)->wrapper);
  GdkRectangle rect;
  GdkWindowImplQuartz *impl;
  GList *windows = NULL, *l;

  /* FIXME: The clip rectangle should really be cached
   * and recalculated when the window rectangle changes.
   */
  while (private)
    {
      windows = g_list_prepend (windows, private);

      if (private->parent == GDK_WINDOW_OBJECT (_gdk_root))
	break;

      private = private->parent;
    }

  /* Get rectangle for toplevel window */
  private = GDK_WINDOW_OBJECT (windows->data);
  impl = GDK_WINDOW_IMPL_QUARTZ (private->impl);
  
  rect.x = 0;
  rect.y = 0;
  rect.width = impl->width;
  rect.height = impl->height;

  /* Skip toplevel window since we have its rect */
  for (l = windows->next; l; l = l->next)
    {
      private = GDK_WINDOW_OBJECT (l->data);
      impl = GDK_WINDOW_IMPL_QUARTZ (private->impl);
      GdkRectangle tmp_rect;

      tmp_rect.x = -MIN (0, private->x - rect.x);
      tmp_rect.y = -MIN (0, private->y - rect.y);
      tmp_rect.width = MIN (rect.width, impl->width + private->x - rect.x) - MAX (0, private->x - rect.x);
      tmp_rect.height = MIN (rect.height, impl->height + private->y - rect.y) - MAX (0, private->y - rect.y);

      rect = tmp_rect;
    }
  
  g_list_free (windows);
  
  return gdk_region_rectangle (&rect);
}

static void
gdk_window_impl_quartz_finalize (GObject *object)
{
  GdkWindowImplQuartz *impl = GDK_WINDOW_IMPL_QUARTZ (object);

  if (impl->nscursor)
    [impl->nscursor release];

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  if (impl->paint_clip_region)
    gdk_region_destroy (impl->paint_clip_region);

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  if (impl->transient_for)
    g_object_unref (impl->transient_for);

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  G_OBJECT_CLASS (parent_class)->finalize (object);
}

static void
gdk_window_impl_quartz_class_init (GdkWindowImplQuartzClass *klass)
{
  GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass);
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  GObjectClass *object_class = G_OBJECT_CLASS (klass);
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  parent_class = g_type_class_peek_parent (klass);

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  object_class->finalize = gdk_window_impl_quartz_finalize;

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  drawable_class->get_size = gdk_window_impl_quartz_get_size;

  /* Visible and clip regions are the same */
  drawable_class->get_clip_region = gdk_window_impl_quartz_get_visible_region;
  drawable_class->get_visible_region = gdk_window_impl_quartz_get_visible_region;
}

static void
gdk_window_impl_quartz_init (GdkWindowImplQuartz *impl)
{
  impl->width = 1;
  impl->height = 1;
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  impl->type_hint = GDK_WINDOW_TYPE_HINT_NORMAL;
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}

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static void
gdk_window_impl_quartz_begin_paint_region (GdkPaintable *paintable,
					   GdkRegion    *region)
{
  GdkWindowImplQuartz *impl = GDK_WINDOW_IMPL_QUARTZ (paintable);
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  GdkDrawableImplQuartz *drawable_impl;
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  int n_rects;
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  GdkRectangle *rects;
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  GdkPixmap *bg_pixmap;
  GdkWindow *window;
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  drawable_impl = GDK_DRAWABLE_IMPL_QUARTZ (impl);
  bg_pixmap = GDK_WINDOW_OBJECT (drawable_impl->wrapper)->bg_pixmap;
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  if (impl->begin_paint_count == 0)
    impl->paint_clip_region = gdk_region_copy (region);
  else
    gdk_region_union (impl->paint_clip_region, region);

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  impl->begin_paint_count++;
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  if (bg_pixmap == GDK_NO_BG)
    return;
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  gdk_region_get_rectangles (region, &rects, &n_rects);
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  if (bg_pixmap == NULL)
    {
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      CGContextRef cg_context;
      gfloat r, g, b, a;
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      gint i;
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      cg_context = gdk_quartz_drawable_get_context (GDK_DRAWABLE (impl), FALSE);
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      _gdk_quartz_colormap_get_rgba_from_pixel (gdk_drawable_get_colormap (drawable_impl->wrapper),
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				      GDK_WINDOW_OBJECT (drawable_impl->wrapper)->bg_color.pixel,
				      &r, &g, &b, &a);
 
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      for (i = 0; i < n_rects; i++) 
        {
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	  CGContextSetRGBFillColor (cg_context, r, g, b, a);
          CGContextFillRect (cg_context,
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			     CGRectMake (rects[i].x, rects[i].y,
					 rects[i].width, rects[i].height));
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        }
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      gdk_quartz_drawable_release_context (GDK_DRAWABLE (impl), cg_context);
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    }
  else
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    {
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      int x, y;
      int x_offset, y_offset;
      int width, height;
      GdkGC *gc;
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      x_offset = y_offset = 0;
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      window = GDK_WINDOW (drawable_impl->wrapper);
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      while (window && ((GdkWindowObject *) window)->bg_pixmap == GDK_PARENT_RELATIVE_BG)
        {
          /* If this window should have the same background as the parent,
           * fetch the parent. (And if the same goes for the parent, fetch
           * the grandparent, etc.)
           */
          x_offset += ((GdkWindowObject *) window)->x;
          y_offset += ((GdkWindowObject *) window)->y;
          window = GDK_WINDOW (((GdkWindowObject *) window)->parent);
        }

      /* Note: There should be a CG API to draw tiled images, we might
       * want to look into that for this. 
       */
      gc = gdk_gc_new (GDK_DRAWABLE (impl));
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      gdk_drawable_get_size (GDK_DRAWABLE (bg_pixmap), &width, &height);
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      x = -x_offset;
      while (x < (rects[0].x + rects[0].width))
        {
          if (x + width >= rects[0].x)
	    {
              y = -y_offset;
              while (y < (rects[0].y + rects[0].height))
                {
                  if (y + height >= rects[0].y)
                    gdk_draw_drawable (GDK_DRAWABLE (impl), gc, bg_pixmap, 0, 0, x, y, width, height);
		  
                  y += height;
                }
            }
          x += width;
        }
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      g_object_unref (gc);
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    }
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  g_free (rects);
}

static void
gdk_window_impl_quartz_end_paint (GdkPaintable *paintable)
{
  GdkWindowImplQuartz *impl = GDK_WINDOW_IMPL_QUARTZ (paintable);

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  impl->begin_paint_count--;
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  if (impl->begin_paint_count == 0)
    {
      gdk_region_destroy (impl->paint_clip_region);
      impl->paint_clip_region = NULL;
    }
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}

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static void
gdk_window_quartz_process_updates_internal (GdkWindow *window)
{
  GdkWindowObject *private = (GdkWindowObject *) window;
  GdkWindowImplQuartz *impl = (GdkWindowImplQuartz *) private->impl;
      
  if (private->update_area)
    {
      int i, n_rects;
      GdkRectangle *rects;

      gdk_region_get_rectangles (private->update_area, &rects, &n_rects);

      gdk_region_destroy (private->update_area);
      private->update_area = NULL;

      for (i = 0; i < n_rects; i++) 
	{
	  [impl->view setNeedsDisplayInRect:NSMakeRect (rects[i].x, rects[i].y,
							rects[i].width, rects[i].height)];
	}

      [impl->view displayIfNeeded];

      g_free (rects);
    }
}

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static void
gdk_window_quartz_process_all_updates (void)
{
  GSList *old_update_windows = update_windows;
  GSList *tmp_list = update_windows;

  update_idle = 0;
  update_windows = NULL;

  g_slist_foreach (old_update_windows, (GFunc) g_object_ref, NULL);
  
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  GDK_QUARTZ_ALLOC_POOL;

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  while (tmp_list)
    {
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      gdk_window_quartz_process_updates_internal (tmp_list->data);
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      g_object_unref (tmp_list->data);
      tmp_list = tmp_list->next;
    }

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  GDK_QUARTZ_RELEASE_POOL;

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  g_slist_free (old_update_windows);
}

static gboolean
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gdk_window_quartz_update_idle (gpointer data)
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{
  GDK_THREADS_ENTER ();
  gdk_window_quartz_process_all_updates ();
  GDK_THREADS_LEAVE ();

  return FALSE;
}

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static void
gdk_window_impl_quartz_invalidate_maybe_recurse (GdkPaintable *paintable,
						 GdkRegion    *region,
						 gboolean    (*child_func) (GdkWindow *, gpointer),
						 gpointer      user_data)
{
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  GdkWindowImplQuartz *window_impl = GDK_WINDOW_IMPL_QUARTZ (paintable);
  GdkDrawableImplQuartz *drawable_impl = (GdkDrawableImplQuartz *) window_impl;
  GdkWindow *window = (GdkWindow *) drawable_impl->wrapper;
  GdkWindowObject *private = (GdkWindowObject *) window;
  GdkRegion *visible_region;
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  visible_region = gdk_drawable_get_visible_region (window);
  gdk_region_intersect (visible_region, region);
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  if (private->update_area)
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    {
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      gdk_region_union (private->update_area, visible_region);
      gdk_region_destroy (visible_region);
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    }
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  else
    {
      update_windows = g_slist_prepend (update_windows, window);
      private->update_area = visible_region;
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      if (update_idle == 0)
	update_idle = g_idle_add_full (GDK_PRIORITY_REDRAW,
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				       gdk_window_quartz_update_idle, NULL, NULL);
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    }
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}

static void
gdk_window_impl_quartz_process_updates (GdkPaintable *paintable,
					gboolean      update_children)
{
  GdkWindowImplQuartz *impl = GDK_WINDOW_IMPL_QUARTZ (paintable);
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  GdkDrawableImplQuartz *drawable_impl = (GdkDrawableImplQuartz *) impl;
  GdkWindowObject *private = (GdkWindowObject *) drawable_impl->wrapper;
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  if (private->update_area)
    {
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      gdk_window_quartz_process_updates_internal ((GdkWindow *) private);
      update_windows = g_slist_remove (update_windows, private);
    }
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}

static void
gdk_window_impl_quartz_paintable_init (GdkPaintableIface *iface)
{
  iface->begin_paint_region = gdk_window_impl_quartz_begin_paint_region;
  iface->end_paint = gdk_window_impl_quartz_end_paint;

  iface->invalidate_maybe_recurse = gdk_window_impl_quartz_invalidate_maybe_recurse;
  iface->process_updates = gdk_window_impl_quartz_process_updates;
}

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GType
_gdk_window_impl_quartz_get_type (void)
{
  static GType object_type = 0;

  if (!object_type)
    {
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      const GTypeInfo object_info =
	{
	  sizeof (GdkWindowImplQuartzClass),
	  (GBaseInitFunc) NULL,
	  (GBaseFinalizeFunc) NULL,
	  (GClassInitFunc) gdk_window_impl_quartz_class_init,
	  NULL,           /* class_finalize */
	  NULL,           /* class_data */
	  sizeof (GdkWindowImplQuartz),
	  0,              /* n_preallocs */
	  (GInstanceInitFunc) gdk_window_impl_quartz_init,
	};

      const GInterfaceInfo paintable_info = 
	{
	  (GInterfaceInitFunc) gdk_window_impl_quartz_paintable_init,
	  NULL,
	  NULL
	};
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      object_type = g_type_register_static (GDK_TYPE_DRAWABLE_IMPL_QUARTZ,
                                            "GdkWindowImplQuartz",
                                            &object_info, 0);
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      g_type_add_interface_static (object_type,
				   GDK_TYPE_PAINTABLE,
				   &paintable_info);
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    }
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  return object_type;
}

GType
_gdk_window_impl_get_type (void)
{
  return _gdk_window_impl_quartz_get_type ();
}

static const gchar *
get_default_title (void)
{
  const char *title;

  title = g_get_application_name ();
  if (!title)
    title = g_get_prgname ();

  return title;
}

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gboolean
_gdk_quartz_window_is_ancestor (GdkWindow *ancestor,
                                GdkWindow *window)
{
  if (ancestor == NULL || window == NULL)
    return FALSE;

  return (gdk_window_get_parent (window) == ancestor ||
          _gdk_quartz_window_is_ancestor (ancestor, 
                                          gdk_window_get_parent (window)));
}

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/* FIXME: It would be nice to have one function that takes an NSPoint
 * and flips the coords for any window.
 */
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gint 
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_gdk_quartz_window_get_inverted_screen_y (gint y)
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{
  NSRect rect = [[NSScreen mainScreen] frame];

  return rect.size.height - y;
}

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static GdkWindow *
find_child_window_helper (GdkWindow *window,
			  gint       x,
			  gint       y,
			  gint       x_offset,
			  gint       y_offset)
{
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  GdkWindowImplQuartz *impl;
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  GList *l;

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  impl = GDK_WINDOW_IMPL_QUARTZ (GDK_WINDOW_OBJECT (window)->impl);

  if (window == _gdk_root)
    update_toplevel_order ();

  for (l = impl->sorted_children; l; l = l->next)
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    {
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      GdkWindowObject *child_private = l->data;
      GdkWindowImplQuartz *child_impl = GDK_WINDOW_IMPL_QUARTZ (child_private->impl);
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      int temp_x, temp_y;

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      if (!GDK_WINDOW_IS_MAPPED (child_private))
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	continue;

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      temp_x = x_offset + child_private->x;
      temp_y = y_offset + child_private->y;

      /* Special-case the root window. We have to include the title
       * bar in the checks, otherwise the window below the title bar
       * will be found i.e. events punch through. (If we can find a
       * better way to deal with the events in gdkevents-quartz, this
       * might not be needed.)
       */
      if (window == _gdk_root)
        {
          NSRect frame = NSMakeRect (0, 0, 100, 100);
          NSRect content;
          int mask;
          int titlebar_height;

          mask = [child_impl->toplevel styleMask];

          /* Get the title bar height. */
          content = [NSWindow contentRectForFrameRect:frame
                                            styleMask:mask];
          titlebar_height = frame.size.height - content.size.height;

          if (titlebar_height > 0 &&
              x >= temp_x && y >= temp_y - titlebar_height &&
              x < temp_x + child_impl->width && y < temp_y)
            {
              /* The root means "unknown" i.e. a window not managed by
               * GDK.
               */
              return (GdkWindow *)_gdk_root;
            }
        }

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      if (x >= temp_x && y >= temp_y &&
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	  x < temp_x + child_impl->width && y < temp_y + child_impl->height)
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	{
	  /* Look for child windows. */
	  return find_child_window_helper (l->data,
					   x, y,
					   temp_x, temp_y);
	}
    }
  
  return window;
}

/* Given a GdkWindow and coordinates relative to it, returns the
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 * innermost subwindow that contains the point. If the coordinates are
 * outside the passed in window, NULL is returned.
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 */
GdkWindow *
_gdk_quartz_window_find_child (GdkWindow *window,
			       gint       x,
			       gint       y)
{
  GdkWindowObject *private = GDK_WINDOW_OBJECT (window);
  GdkWindowImplQuartz *impl = GDK_WINDOW_IMPL_QUARTZ (private->impl);

  if (x >= 0 && y >= 0 && x < impl->width && y < impl->height)
    return find_child_window_helper (window, x, y, 0, 0);

  return NULL;
}

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void
_gdk_quartz_window_did_become_main (GdkWindow *window)
{
  main_window_stack = g_slist_remove (main_window_stack, window);

  if (GDK_WINDOW_OBJECT (window)->window_type != GDK_WINDOW_TEMP)
    main_window_stack = g_slist_prepend (main_window_stack, window);
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  clear_toplevel_order ();
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}

void
_gdk_quartz_window_did_resign_main (GdkWindow *window)
{
  GdkWindow *new_window = NULL;

  if (main_window_stack)
    new_window = main_window_stack->data;
  else
    {
      GList *toplevels;

      toplevels = gdk_window_get_toplevels ();
      if (toplevels)
        new_window = toplevels->data;
      g_list_free (toplevels);
    }

  if (new_window &&
      new_window != window &&
      GDK_WINDOW_IS_MAPPED (new_window) &&
      GDK_WINDOW_OBJECT (new_window)->window_type != GDK_WINDOW_TEMP)
    {
      GdkWindowObject *private = (GdkWindowObject *) new_window;
      GdkWindowImplQuartz *impl = GDK_WINDOW_IMPL_QUARTZ (private->impl);

      [impl->toplevel makeKeyAndOrderFront:impl->toplevel];
    }
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  clear_toplevel_order ();
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}

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GdkWindow *
gdk_window_new (GdkWindow     *parent,
		GdkWindowAttr *attributes,
		gint           attributes_mask)
{
  GdkWindow *window;
  GdkWindowObject *private;
  GdkWindowImplQuartz *impl;
  GdkDrawableImplQuartz *draw_impl;
  GdkVisual *visual;
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  GdkWindowImplQuartz *parent_impl;
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  if (parent && GDK_WINDOW_DESTROYED (parent))
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    return NULL;

  GDK_QUARTZ_ALLOC_POOL;
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  if (!parent)
    parent = _gdk_root;

  window = g_object_new (GDK_TYPE_WINDOW, NULL);
  private = (GdkWindowObject *)window;
  impl = GDK_WINDOW_IMPL_QUARTZ (private->impl);
  draw_impl = GDK_DRAWABLE_IMPL_QUARTZ (private->impl);
  draw_impl->wrapper = GDK_DRAWABLE (window);

  private->parent = (GdkWindowObject *)parent;
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  parent_impl = GDK_WINDOW_IMPL_QUARTZ (private->parent->impl);
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  private->accept_focus = TRUE;
  private->focus_on_map = TRUE;

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  if (attributes_mask & GDK_WA_X)
    private->x = attributes->x;
  else
    private->x = 0;
  
  if (attributes_mask & GDK_WA_Y)
    private->y = attributes->y;
  else if (attributes_mask & GDK_WA_X)
    private->y = 100;
  else
    private->y = 0;

  private->event_mask = attributes->event_mask;

  impl->width = attributes->width > 1 ? attributes->width : 1;
  impl->height = attributes->height > 1 ? attributes->height : 1;

  if (attributes_mask & GDK_WA_VISUAL)
    visual = attributes->visual;
  else
    visual = gdk_screen_get_system_visual (_gdk_screen);

  if (attributes->wclass == GDK_INPUT_ONLY)
    {
      /* Backwards compatiblity - we've always ignored
       * attributes->window_type for input-only windows
       * before
       */
      if (parent == _gdk_root)
	private->window_type = GDK_WINDOW_TEMP;
      else
	private->window_type = GDK_WINDOW_CHILD;
    }
  else
    private->window_type = attributes->window_type;

  /* Sanity checks */
  switch (private->window_type)
    {
    case GDK_WINDOW_TOPLEVEL:
    case GDK_WINDOW_DIALOG:
    case GDK_WINDOW_TEMP:
      if (GDK_WINDOW_TYPE (parent) != GDK_WINDOW_ROOT)
	{
	  g_warning (G_STRLOC "Toplevel windows must be created as children of\n"
		     "of a window of type GDK_WINDOW_ROOT or GDK_WINDOW_FOREIGN");
	}
    case GDK_WINDOW_CHILD:
      break;
    default:
      g_warning (G_STRLOC "cannot make windows of type %d", private->window_type);
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      GDK_QUARTZ_RELEASE_POOL;
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      return NULL;
    }

  if (attributes->wclass == GDK_INPUT_OUTPUT)
    {
      private->input_only = FALSE;
      private->depth = visual->depth;

      if (attributes_mask & GDK_WA_COLORMAP)
	{
	  draw_impl->colormap = attributes->colormap;
	  g_object_ref (attributes->colormap);
	}
      else
	{
	  if (visual == gdk_screen_get_system_visual (_gdk_screen))
	    {
	      draw_impl->colormap = gdk_screen_get_system_colormap (_gdk_screen);
	      g_object_ref (draw_impl->colormap);
	    }
	  else if (visual == gdk_screen_get_rgba_visual (_gdk_screen))
	    {
	      draw_impl->colormap = gdk_screen_get_rgba_colormap (_gdk_screen);
	      g_object_ref (draw_impl->colormap);
	    }
	  else
	    {
	      draw_impl->colormap = gdk_colormap_new (visual, FALSE);
	    }
	}

      private->bg_color.pixel = 0;
      private->bg_color.red = private->bg_color.green = private->bg_color.blue = 0;
    }
  else
    {
      private->depth = 0;
      private->input_only = TRUE;
      draw_impl->colormap = gdk_screen_get_system_colormap (_gdk_screen);
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      g_object_ref (draw_impl->colormap);
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    }

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  private->parent->children = g_list_prepend (private->parent->children, window);

  /* Maintain the z-ordered list of children. */
  if (parent != _gdk_root)
    parent_impl->sorted_children = g_list_prepend (parent_impl->sorted_children, window);
  else
    clear_toplevel_order ();
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  gdk_window_set_cursor (window, ((attributes_mask & GDK_WA_CURSOR) ?
				  (attributes->cursor) :
				  NULL));

  switch (attributes->window_type) 
    {
    case GDK_WINDOW_TOPLEVEL:
    case GDK_WINDOW_DIALOG:
    case GDK_WINDOW_TEMP:
      {
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        NSRect content_rect;
        int style_mask;
        const char *title;

        /* Big hack: We start out outside the screen and move the
         * window in before showing it. This makes the initial
         * MouseEntered event work if the window ends up right under
         * the mouse pointer, bad quartz.
         */
        content_rect = NSMakeRect (-500 - impl->width, -500 - impl->height,
                                   impl->width, impl->height);
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	switch (attributes->window_type) 
          {
          case GDK_WINDOW_TEMP:
            style_mask = NSBorderlessWindowMask;
            break;
          default:
            style_mask = (NSTitledWindowMask |
                          NSClosableWindowMask |
                          NSMiniaturizableWindowMask |
                          NSResizableWindowMask);
          }
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	impl->toplevel = [[GdkQuartzWindow alloc] initWithContentRect:content_rect 
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			                                    styleMask:style_mask
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			                                      backing:NSBackingStoreBuffered
			                                        defer:NO];

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	if (attributes_mask & GDK_WA_TITLE)
	  title = attributes->title;
	else
	  title = get_default_title ();

	gdk_window_set_title (window, title);
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	if (draw_impl->colormap == gdk_screen_get_rgba_colormap (_gdk_screen))
	  {
	    [impl->toplevel setOpaque:NO];
	    [impl->toplevel setBackgroundColor:[NSColor clearColor]];
	  }

	impl->view = [[GdkQuartzView alloc] initWithFrame:content_rect];
	[impl->view setGdkWindow:window];
	[impl->toplevel setContentView:impl->view];
      }
      break;
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    case GDK_WINDOW_CHILD:
      {
	GdkWindowImplQuartz *parent_impl = GDK_WINDOW_IMPL_QUARTZ (GDK_WINDOW_OBJECT (parent)->impl);

	if (attributes->wclass == GDK_INPUT_OUTPUT)
	  {
	    NSRect frame_rect = NSMakeRect (private->x, private->y, impl->width, impl->height);
	
	    impl->view = [[GdkQuartzView alloc] initWithFrame:frame_rect];
	    
	    [impl->view setGdkWindow:window];

	    /* GdkWindows should be hidden by default */
	    [impl->view setHidden:YES];
	    [parent_impl->view addSubview:impl->view];
	  }
      }
      break;
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    default:
      g_assert_not_reached ();
    }

  GDK_QUARTZ_RELEASE_POOL;

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  if (attributes_mask & GDK_WA_TYPE_HINT)
    gdk_window_set_type_hint (window, attributes->type_hint);

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  return window;
}

void
_gdk_windowing_window_init (void)
{
  GdkWindowObject *private;
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  GdkWindowImplQuartz *impl;
  NSRect rect;
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  g_assert (_gdk_root == NULL);

  _gdk_root = g_object_new (GDK_TYPE_WINDOW, NULL);
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  /* Note: This needs to be reworked for multi-screen support. */
  impl = GDK_WINDOW_IMPL_QUARTZ (GDK_WINDOW_OBJECT (_gdk_root)->impl);
  rect = [[NSScreen mainScreen] frame];
  impl->width = rect.size.width;
  impl->height = rect.size.height;

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  private = (GdkWindowObject *)_gdk_root;
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  private->state = 0; /* We don't want GDK_WINDOW_STATE_WITHDRAWN here */
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  private->window_type = GDK_WINDOW_ROOT;
  private->depth = 24;
}

void
_gdk_windowing_window_destroy (GdkWindow *window,
			       gboolean   recursing,
			       gboolean   foreign_destroy)
{
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  GdkWindowObject *private;
  GdkWindowImplQuartz *impl;
  GdkWindowObject *parent;

  private = GDK_WINDOW_OBJECT (window);
  impl = GDK_WINDOW_IMPL_QUARTZ (private->impl);

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  update_windows = g_slist_remove (update_windows, window);
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  main_window_stack = g_slist_remove (main_window_stack, window);
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  g_list_free (impl->sorted_children);
  impl->sorted_children = NULL;

  parent = private->parent;
  if (parent)
    {
      GdkWindowImplQuartz *parent_impl = GDK_WINDOW_IMPL_QUARTZ (parent->impl);

      parent_impl->sorted_children = g_list_remove (parent_impl->sorted_children, window);
    }

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  /* If the destroyed window was targeted for a pointer or keyboard
   * grab, release the grab.
   */
  if (window == _gdk_quartz_pointer_grab_window)
    gdk_pointer_ungrab (0);

  if (window == _gdk_quartz_keyboard_grab_window)
    gdk_keyboard_ungrab (0);

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  if (!recursing && !foreign_destroy)
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    {
      GdkWindowImplQuartz *impl = GDK_WINDOW_IMPL_QUARTZ (GDK_WINDOW_OBJECT (window)->impl);
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      GdkWindow *mouse_window;
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      mouse_window = _gdk_quartz_events_get_mouse_window (FALSE);
      if (window == mouse_window ||
          _gdk_quartz_window_is_ancestor (window, mouse_window))
        _gdk_quartz_events_update_mouse_window (_gdk_root);
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      GDK_QUARTZ_ALLOC_POOL;

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      _gdk_quartz_drawable_finish (GDK_DRAWABLE (impl));

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      if (impl->toplevel)
	[impl->toplevel close];
      else if (impl->view)
	[impl->view release];
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      GDK_QUARTZ_RELEASE_POOL;
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    }
}

void
_gdk_windowing_window_destroy_foreign (GdkWindow *window)
{
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  /* Foreign windows aren't supported in OSX. */
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}

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static gboolean
all_parents_shown (GdkWindowObject *private)
{
  while (GDK_WINDOW_IS_MAPPED (private))
    {
      if (private->parent)
	private = (GdkWindowObject *)private->parent;
      else
	return TRUE;
    }

  return FALSE;
}

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/* Note: the raise argument is not really used, it doesn't seem
 * possible to show a window without raising it?
 */
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static void
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show_window_internal (GdkWindow *window,
		      gboolean   raise)
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{
  GdkWindowObject *private;
  GdkWindowImplQuartz *impl;
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  gboolean focus_on_map;
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  if (GDK_WINDOW_DESTROYED (window))
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    return;

  GDK_QUARTZ_ALLOC_POOL;

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  private = (GdkWindowObject *)window;
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  impl = GDK_WINDOW_IMPL_QUARTZ (private->impl);

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  if (!GDK_WINDOW_IS_MAPPED (window))
    focus_on_map = private->focus_on_map;
  else
    focus_on_map = TRUE;

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  if (impl->toplevel)
    {
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      /* Move the window into place, to guarantee that we get the
       * initial MouseEntered event.
       */
      if (!GDK_WINDOW_IS_MAPPED (window))
        {
          NSRect content_rect;
          NSRect frame_rect;

          content_rect =
            NSMakeRect (private->x,
                        _gdk_quartz_window_get_inverted_screen_y (private->y) - impl->height,
                        impl->width, impl->height);
          frame_rect = [impl->toplevel frameRectForContentRect:content_rect];
          [impl->toplevel setFrame:frame_rect display:NO];
        }

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      /* We should make the window not raise for !raise, but at least
       * this will keep it from getting focused in that case.
       */
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      if (private->accept_focus && focus_on_map && raise &&
          private->window_type != GDK_WINDOW_TEMP)
        [impl->toplevel makeKeyAndOrderFront:impl->toplevel];
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      else
        [impl->toplevel orderFront:nil];
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    }
  else
    {
      [impl->view setHidden:NO];
    }

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  [impl->view setNeedsDisplay:YES];

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  if (all_parents_shown (private->parent))
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    _gdk_quartz_events_send_map_events (window);
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  gdk_synthesize_window_state (window, GDK_WINDOW_STATE_WITHDRAWN, 0);

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  if (private->state & GDK_WINDOW_STATE_MAXIMIZED)
    gdk_window_maximize (window);

  if (private->state & GDK_WINDOW_STATE_ICONIFIED)
    gdk_window_iconify (window);

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  if (impl->transient_for && !GDK_WINDOW_DESTROYED (impl->transient_for))
    _gdk_quartz_window_attach_to_parent (window);

  GDK_QUARTZ_RELEASE_POOL;
}

/* Temporarily unsets the parent window, if the window is a
 * transient. 
 */
void
_gdk_quartz_window_detach_from_parent (GdkWindow *window)
{
  GdkWindowImplQuartz *impl;

  g_return_if_fail (GDK_IS_WINDOW (window));

  impl = GDK_WINDOW_IMPL_QUARTZ (GDK_WINDOW_OBJECT (window)->impl);
  
  g_return_if_fail (impl->toplevel != NULL);

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  if (impl->transient_for && !GDK_WINDOW_DESTROYED (impl->transient_for))
    {
      GdkWindowImplQuartz *parent_impl;

      parent_impl = GDK_WINDOW_IMPL_QUARTZ (GDK_WINDOW_OBJECT (impl->transient_for)->impl);
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      [parent_impl->toplevel removeChildWindow:impl->toplevel];
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    }
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}
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/* Re-sets the parent window, if the window is a transient. */
void
_gdk_quartz_window_attach_to_parent (GdkWindow *window)
{
  GdkWindowImplQuartz *impl;

  g_return_if_fail (GDK_IS_WINDOW (window));

  impl = GDK_WINDOW_IMPL_QUARTZ (GDK_WINDOW_OBJECT (window)->impl);
  
  g_return_if_fail (impl->toplevel != NULL);

  if (impl->transient_for && !GDK_WINDOW_DESTROYED (impl->transient_for))
    {
      GdkWindowImplQuartz *parent_impl;

      parent_impl = GDK_WINDOW_IMPL_QUARTZ (GDK_WINDOW_OBJECT (impl->transient_for)->impl);
      [parent_impl->toplevel addChildWindow:impl->toplevel ordered:NSWindowAbove];
    }
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}

void
gdk_window_show_unraised (GdkWindow *window)
{
  g_return_if_fail (GDK_IS_WINDOW (window));

  show_window_internal (window, FALSE);
}

void
gdk_window_show (GdkWindow *window)
{
  g_return_if_fail (GDK_IS_WINDOW (window));

  show_window_internal (window, TRUE);
}

void
gdk_window_hide (GdkWindow *window)
{
  GdkWindowObject *private = (GdkWindowObject *)window;
  GdkWindowImplQuartz *impl;
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  GdkWindow *mouse_window;
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  g_return_if_fail (GDK_IS_WINDOW (window));

  if (GDK_WINDOW_DESTROYED (window))
    return;

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  mouse_window = _gdk_quartz_events_get_mouse_window (FALSE);
  if (window == mouse_window || 
      _gdk_quartz_window_is_ancestor (window, mouse_window))
    _gdk_quartz_events_update_mouse_window (_gdk_root);

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  if (GDK_WINDOW_IS_MAPPED (window))
    gdk_synthesize_window_state (window,
				 0,
				 GDK_WINDOW_STATE_WITHDRAWN);
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  _gdk_window_clear_update_area (window);

  impl = GDK_WINDOW_IMPL_QUARTZ (private->impl);

  if (impl->toplevel) 
    {
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      NSRect content_rect;
      NSRect frame_rect;

     /* Update main window. */
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      main_window_stack = g_slist_remove (main_window_stack, window);
      if ([NSApp mainWindow] == impl->toplevel)
        _gdk_quartz_window_did_resign_main (window);

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      if (impl->transient_for)
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        _gdk_quartz_window_detach_from_parent (window);
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      /* Big hack in gdk_window_new() and show_window_internal()
       * continued. Move the window away when hidden so that we can
       * move it back before showing it.
       */
      content_rect = NSMakeRect (-500 - impl->width, -500 - impl->height,
                                 impl->width, impl->height);
      frame_rect = [impl->toplevel frameRectForContentRect:content_rect];
      [impl->toplevel setFrame:frame_rect display:NO];

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      [impl->toplevel orderOut:nil];
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    }
  else if (impl->view)
    {
      [impl->view setHidden:YES];
    }
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  if (window == _gdk_quartz_pointer_grab_window)
    gdk_pointer_ungrab (0);
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  if (window == _gdk_quartz_keyboard_grab_window)
    gdk_keyboard_ungrab (0);
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}

void
gdk_window_withdraw (GdkWindow *window)
{
  gdk_window_hide (window);
}

static void
move_resize_window_internal (GdkWindow *window,
			     gint       x,
			     gint       y,
			     gint       width,
			     gint       height)
{
  GdkWindowObject *private = (GdkWindowObject *)window;
  GdkWindowImplQuartz *impl;
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  GdkRectangle old_visible;
  GdkRectangle new_visible;
  GdkRectangle scroll_rect;
  GdkRegion *old_region;
  GdkRegion *expose_region;
  NSSize delta;
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  if (GDK_WINDOW_DESTROYED (window))
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    return;
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  impl = GDK_WINDOW_IMPL_QUARTZ (private->impl);

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  if ((x == private->x) &&
      (y == private->y) &&
      (width == impl->width) &&
      (height == impl->height))
    {
      return;
    }

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  if (!impl->toplevel)
    {
      /* The previously visible area of this window in a coordinate
       * system rooted at the origin of this window.
       */
      old_visible.x = -private->x;
      old_visible.y = -private->y;

      gdk_window_get_size (GDK_DRAWABLE (private->parent), 
                           &old_visible.width, 
                           &old_visible.height);
    }

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  if (x != -1)
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    {
      delta.width = x - private->x;
      private->x = x;
    }
  else
    {
      delta.width = 0;
    }
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  if (y != -1)
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    {
      delta.height = y - private->y;
      private->y = y;
    }
  else
    {
      delta.height = 0;
    }
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  if (width != -1)
    impl->width = width;

  if (height != -1)
    impl->height = height;

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  GDK_QUARTZ_ALLOC_POOL;

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  if (impl->toplevel)
    {
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      NSRect content_rect = 
	NSMakeRect (private->x, 
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		    _gdk_quartz_window_get_inverted_screen_y (private->y),
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		    impl->width, impl->height);
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      NSRect frame_rect = [impl->toplevel frameRectForContentRect:content_rect];
      
      frame_rect.origin.y -= frame_rect.size.height;
      [impl->toplevel setFrame:frame_rect display:YES];
    }
  else 
    {
      if (!private->input_only)
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        {
          NSRect nsrect;
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          nsrect = NSMakeRect (private->x, private->y, impl->width, impl->height);

          /* The newly visible area of this window in a coordinate
           * system rooted at the origin of this window.
           */
          new_visible.x = -private->x;
          new_visible.y = -private->y;
          new_visible.width = old_visible.width;   /* parent has not changed size */
          new_visible.height = old_visible.height; /* parent has not changed size */

          expose_region = gdk_region_rectangle (&new_visible);
          old_region = gdk_region_rectangle (&old_visible);
          gdk_region_subtract (expose_region, old_region);

          /* Determine what (if any) part of the previously visible
           * part of the window can be copied without a redraw
           */
          scroll_rect = old_visible;
          scroll_rect.x -= delta.width;
          scroll_rect.y -= delta.height;
          gdk_rectangle_intersect (&scroll_rect, &old_visible, &scroll_rect);

          if (!gdk_region_empty (expose_region))
            {
              GdkRectangle* rects;
              gint n_rects;
              gint n;

              if (scroll_rect.width != 0 && scroll_rect.height != 0)
                {
                  [impl->view scrollRect:NSMakeRect (scroll_rect.x,
                                                     scroll_rect.y,
                                                     scroll_rect.width,
                                                     scroll_rect.height)
			              by:delta];
                }

              [impl->view setFrame:nsrect];

              gdk_region_get_rectangles (expose_region, &rects, &n_rects);

              for (n = 0; n < n_rects; ++n)
                {
                  [impl->view setNeedsDisplayInRect:NSMakeRect (rects[n].x,
                                                                rects[n].y,
                                                                rects[n].width,
                                                                rects[n].height)];
                }

              g_free (rects);
            }
          else
            {
              [impl->view setFrame:nsrect];
              [impl->view setNeedsDisplay:YES];
            }

          gdk_region_destroy (expose_region);
          gdk_region_destroy (old_region);
        }
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    }
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  GDK_QUARTZ_RELEASE_POOL;
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}

void
gdk_window_move (GdkWindow *window,
		 gint       x,
		 gint       y)
{
  g_return_if_fail (GDK_IS_WINDOW (window));

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  if (((GdkWindowObject *)window)->state & GDK_WINDOW_STATE_FULLSCREEN)
    return;

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  move_resize_window_internal (window, x, y, -1, -1);
}

void
gdk_window_resize (GdkWindow *window,
		   gint       width,
		   gint       height)
{
  g_return_if_fail (GDK_IS_WINDOW (window));

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  if (((GdkWindowObject *)window)->state & GDK_WINDOW_STATE_FULLSCREEN)
    return;

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