gdkwindow.c

gtk是linux一款强大的夸平台的图形化开发工具

  if (x)
    *x = winx;
  if (y)
    *y = winy;
  if (mask)
    *mask = xmask;
  
  return return_val;
}

GdkWindow*
gdk_window_at_pointer (gint *win_x,
		       gint *win_y)
{
  GdkWindowPrivate *private;
  GdkWindow *window;
  Window root;
  Window xwindow;
  Window xwindow_last = 0;
  int rootx = -1, rooty = -1;
  int winx, winy;
  unsigned int xmask;
  
  private = &gdk_root_parent;
  
  xwindow = private->xwindow;
  
  XGrabServer (private->xdisplay);
  while (xwindow)
    {
      xwindow_last = xwindow;
      XQueryPointer (private->xdisplay,
		     xwindow,
		     &root, &xwindow,
		     &rootx, &rooty,
		     &winx, &winy,
		     &xmask);
    }
  XUngrabServer (private->xdisplay);
  
  window = gdk_window_lookup (xwindow_last);
  
  if (win_x)
    *win_x = window ? winx : -1;
  if (win_y)
    *win_y = window ? winy : -1;
  
  return window;
}

GdkWindow*
gdk_window_get_parent (GdkWindow *window)
{
  g_return_val_if_fail (window != NULL, NULL);
  
  return ((GdkWindowPrivate*) window)->parent;
}

GdkWindow*
gdk_window_get_toplevel (GdkWindow *window)
{
  GdkWindowPrivate *private;
  
  g_return_val_if_fail (window != NULL, NULL);
  
  private = (GdkWindowPrivate*) window;
  
  while (private->window_type == GDK_WINDOW_CHILD)
    {
      window = ((GdkWindowPrivate*) window)->parent;
      private = (GdkWindowPrivate*) window;
    }
  
  return window;
}

GList*
gdk_window_get_children (GdkWindow *window)
{
  GdkWindowPrivate *private;
  GdkWindow *child;
  GList *children;
  Window root;
  Window parent;
  Window *xchildren;
  unsigned int nchildren;
  unsigned int i;
  
  g_return_val_if_fail (window != NULL, NULL);
  
  private = (GdkWindowPrivate*) window;
  if (private->destroyed)
    return NULL;
  
  XQueryTree (private->xdisplay, private->xwindow,
	      &root, &parent, &xchildren, &nchildren);
  
  children = NULL;
  
  if (nchildren > 0)
    {
      for (i = 0; i < nchildren; i++)
	{
	  child = gdk_window_lookup (xchildren[i]);
          if (child)
            children = g_list_prepend (children, child);
	}
      
      if (xchildren)
	XFree (xchildren);
    }
  
  return children;
}

GdkEventMask  
gdk_window_get_events (GdkWindow *window)
{
  GdkWindowPrivate *private;
  XWindowAttributes attrs;
  GdkEventMask event_mask;
  int i;
  
  g_return_val_if_fail (window != NULL, 0);
  
  private = (GdkWindowPrivate*) window;
  if (private->destroyed)
    return 0;
  
  XGetWindowAttributes (gdk_display, private->xwindow, 
			&attrs);
  
  event_mask = 0;
  for (i = 0; i < gdk_nevent_masks; i++)
    {
      if (attrs.your_event_mask & gdk_event_mask_table[i])
	event_mask |= 1 << (i + 1);
    }
  
  return event_mask;
}

void          
gdk_window_set_events (GdkWindow       *window,
		       GdkEventMask     event_mask)
{
  GdkWindowPrivate *private;
  long xevent_mask;
  int i;
  
  g_return_if_fail (window != NULL);
  
  private = (GdkWindowPrivate*) window;
  if (private->destroyed)
    return;
  
  xevent_mask = StructureNotifyMask;
  for (i = 0; i < gdk_nevent_masks; i++)
    {
      if (event_mask & (1 << (i + 1)))
	xevent_mask |= gdk_event_mask_table[i];
    }
  
  XSelectInput (gdk_display, private->xwindow, 
		xevent_mask);
}

void
gdk_window_add_colormap_windows (GdkWindow *window)
{
  GdkWindow *toplevel;
  GdkWindowPrivate *toplevel_private;
  GdkWindowPrivate *window_private;
  Window *old_windows;
  Window *new_windows;
  int i, count;
  
  g_return_if_fail (window != NULL);
  
  toplevel = gdk_window_get_toplevel (window);
  toplevel_private = (GdkWindowPrivate*) toplevel;
  window_private = (GdkWindowPrivate*) window;
  if (window_private->destroyed)
    return;
  
  old_windows = NULL;
  if (!XGetWMColormapWindows (toplevel_private->xdisplay,
			      toplevel_private->xwindow,
			      &old_windows, &count))
    {
      count = 0;
    }
  
  for (i = 0; i < count; i++)
    if (old_windows[i] == window_private->xwindow)
      {
	XFree (old_windows);
	return;
      }
  
  new_windows = g_new (Window, count + 1);
  
  for (i = 0; i < count; i++)
    new_windows[i] = old_windows[i];
  new_windows[count] = window_private->xwindow;
  
  XSetWMColormapWindows (toplevel_private->xdisplay,
			 toplevel_private->xwindow,
			 new_windows, count + 1);
  
  g_free (new_windows);
  if (old_windows)
    XFree (old_windows);
}

static gboolean
gdk_window_have_shape_ext (void)
{
  enum { UNKNOWN, NO, YES };
  static gint have_shape = UNKNOWN;
  
  if (have_shape == UNKNOWN)
    {
      int ignore;
      if (XQueryExtension (gdk_display, "SHAPE", &ignore, &ignore, &ignore))
	have_shape = YES;
      else
	have_shape = NO;
    }
  
  return (have_shape == YES);
}

/*
 * This needs the X11 shape extension.
 * If not available, shaped windows will look
 * ugly, but programs still work.    Stefan Wille
 */
void
gdk_window_shape_combine_mask (GdkWindow *window,
			       GdkBitmap *mask,
			       gint x, gint y)
{
  GdkWindowPrivate *window_private;
  Pixmap pixmap;
  
  g_return_if_fail (window != NULL);
  
#ifdef HAVE_SHAPE_EXT
  window_private = (GdkWindowPrivate*) window;
  if (window_private->destroyed)
    return;
  
  if (gdk_window_have_shape_ext ())
    {
      if (mask)
	{
	  GdkWindowPrivate *pixmap_private;
	  
	  pixmap_private = (GdkWindowPrivate*) mask;
	  pixmap = (Pixmap) pixmap_private->xwindow;
	}
      else
	{
	  x = 0;
	  y = 0;
	  pixmap = None;
	}
      
      XShapeCombineMask (window_private->xdisplay,
			 window_private->xwindow,
			 ShapeBounding,
			 x, y,
			 pixmap,
			 ShapeSet);
    }
#endif /* HAVE_SHAPE_EXT */
}

void          
gdk_window_add_filter (GdkWindow     *window,
		       GdkFilterFunc  function,
		       gpointer       data)
{
  GdkWindowPrivate *private;
  GList *tmp_list;
  GdkEventFilter *filter;
  
  private = (GdkWindowPrivate*) window;
  if (private && private->destroyed)
    return;
  
  if (private)
    tmp_list = private->filters;
  else
    tmp_list = gdk_default_filters;
  
  while (tmp_list)
    {
      filter = (GdkEventFilter *)tmp_list->data;
      if ((filter->function == function) && (filter->data == data))
	return;
      tmp_list = tmp_list->next;
    }
  
  filter = g_new (GdkEventFilter, 1);
  filter->function = function;
  filter->data = data;
  
  if (private)
    private->filters = g_list_append (private->filters, filter);
  else
    gdk_default_filters = g_list_append (gdk_default_filters, filter);
}

void
gdk_window_remove_filter (GdkWindow     *window,
			  GdkFilterFunc  function,
			  gpointer       data)
{
  GdkWindowPrivate *private;
  GList *tmp_list, *node;
  GdkEventFilter *filter;
  
  private = (GdkWindowPrivate*) window;
  
  if (private)
    tmp_list = private->filters;
  else
    tmp_list = gdk_default_filters;
  
  while (tmp_list)
    {
      filter = (GdkEventFilter *)tmp_list->data;
      node = tmp_list;
      tmp_list = tmp_list->next;
      
      if ((filter->function == function) && (filter->data == data))
	{
	  if (private)
	    private->filters = g_list_remove_link (private->filters, node);
	  else
	    gdk_default_filters = g_list_remove_link (gdk_default_filters, node);
	  g_list_free_1 (node);
	  g_free (filter);
	  
	  return;
	}
    }
}

void
gdk_window_set_override_redirect (GdkWindow *window,
				  gboolean override_redirect)
{
  GdkWindowPrivate *private;
  XSetWindowAttributes attr;
  
  g_return_if_fail (window != NULL);
  private = (GdkWindowPrivate*) window;
  if (private->destroyed)
    return;
  
  attr.override_redirect = (override_redirect == FALSE)?False:True;
  XChangeWindowAttributes (gdk_display,
			   ((GdkWindowPrivate *)window)->xwindow,
			   CWOverrideRedirect,
			   &attr);
}

void          
gdk_window_set_icon (GdkWindow *window, 
		     GdkWindow *icon_window,
		     GdkPixmap *pixmap,
		     GdkBitmap *mask)
{
  XWMHints *wm_hints;
  GdkWindowPrivate *window_private;
  GdkWindowPrivate *private;
  
  g_return_if_fail (window != NULL);
  window_private = (GdkWindowPrivate*) window;
  if (window_private->destroyed)
    return;

  wm_hints = XGetWMHints (window_private->xdisplay, window_private->xwindow);
  if (!wm_hints)
    wm_hints = XAllocWMHints ();

  if (icon_window != NULL)
    {
      private = (GdkWindowPrivate *)icon_window;
      wm_hints->flags |= IconWindowHint;
      wm_hints->icon_window = private->xwindow;
    }
  
  if (pixmap != NULL)
    {
      private = (GdkWindowPrivate *)pixmap;
      wm_hints->flags |= IconPixmapHint;
      wm_hints->icon_pixmap = private->xwindow;
    }
  
  if (mask != NULL)
    {
      private = (GdkWindowPrivate *)mask;
      wm_hints->flags |= IconMaskHint;
      wm_hints->icon_mask = private->xwindow;
    }

  XSetWMHints (window_private->xdisplay, window_private->xwindow, wm_hints);
  XFree (wm_hints);
}

void          
gdk_window_set_icon_name (GdkWindow *window, 
			  gchar *    name)
{
  GdkWindowPrivate *window_private;
  XTextProperty property;
  gint res;
  
  g_return_if_fail (window != NULL);
  window_private = (GdkWindowPrivate*) window;
  if (window_private->destroyed)
    return;
  res = XmbTextListToTextProperty (window_private->xdisplay,
				   &name, 1, XStdICCTextStyle,
                               	   &property);
  if (res < 0)
    {
      g_warning ("Error converting icon name to text property: %d\n", res);
      return;
    }
  
  XSetWMIconName (window_private->xdisplay, window_private->xwindow,
		  &property);
  
  if (property.value)
    XFree (property.value);
}

void          
gdk_window_set_group (GdkWindow *window, 
		      GdkWindow *leader)
{
  XWMHints *wm_hints;
  GdkWindowPrivate *window_private;
  GdkWindowPrivate *private;
  
  g_return_if_fail (window != NULL);
  g_return_if_fail (leader != NULL);
  window_private = (GdkWindowPrivate*) window;
  if (window_private->destroyed)
    return;
  
  private = (GdkWindowPrivate *)leader;

  wm_hints = XGetWMHints (window_private->xdisplay, window_private->xwindow);
  if (!wm_hints)
    wm_hints = XAllocWMHints ();

  wm_hints->flags |= WindowGroupHint;
  wm_hints->window_group = private->xwindow;

  XSetWMHints (window_private->xdisplay, window_private->xwindow, wm_hints);
  XFree (wm_hints);
}

static void
gdk_window_set_mwm_hints (GdkWindow *window,
			  MotifWmHints *new_hints)
{
  static Atom hints_atom = None;
  MotifWmHints *hints;
  Atom type;
  gint format;
  gulong nitems;
  gulong bytes_after;
  
  GdkWindowPrivate *window_private;
  
  g_return_if_fail (window != NULL);
  window_private = (GdkWindowPrivate*) window;
  if (window_private->destroyed)
    return;
  
  if (!hints_atom)
    hints_atom = XInternAtom (window_private->xdisplay, 
			      _XA_MOTIF_WM_HINTS, FALSE);
  
  XGetWindowProperty (window_private->xdisplay, window_private->xwindow,
		      hints_atom, 0, sizeof (MotifWmHints)/sizeof (long),
		      False, AnyPropertyType, &type, &format, &nitems,
		      &bytes_after, (guchar **)&hints);
  
  if (type == None)
    hints = new_hints;
  else
    {
      if (new_hints->flags & MWM_HINTS_FUNCTIONS)
	{
	  hints->flags |= MWM_HINTS_FUNCTIONS;
	  hints->functions = new_hints->functions;
	}
      if (new_hints->flags & MWM_HINTS_DECORATIONS)
	{
	  hints->flags |= MWM_HINTS_DECORATIONS;
	  hints->decorations = new_hints->decorations;
	}
    }
  
  XChangeProperty (window_private->xdisplay, window_private->xwindow,
		   hints_atom, hints_atom, 32, PropModeReplace,
		   (guchar *)hints, sizeof (MotifWmHints)/sizeof (long));
  
  if (hints != new_hints)
    XFree (hints);
}

void
gdk_window_set_decorations (GdkWindow      *window,
			    GdkWMDecoration decorations)
{
  MotifWmHints hints;
  
  hints.flags = MWM_HINTS_DECORATIONS;
  hints.decorations = decorations;
  
  gdk_window_set_mwm_hints (window, &hints);
}

void
gdk_window_set_functions (GdkWindow    *window,
			  GdkWMFunction functions)
{
  MotifWmHints hints;
  
  hints.flags = MWM_HINTS_FUNCTIONS;
  hints.functions = functions;
  
  gdk_window_set_mwm_hints (window, &hints);
}

GList *
gdk_window_get_toplevels (void)
{
  GList *new_list = NULL;
  GList *tmp_list;
  
  tmp_list = gdk_root_parent.children;