gdkwindow-x11.c

linux下电话本所依赖的一些图形库

}

static GdkEventMask
x_event_mask_to_gdk_event_mask (long mask)
{
  GdkEventMask event_mask = 0;
  int i;

  for (i = 0; i < _gdk_nenvent_masks; i++)
    {
      if (mask & _gdk_event_mask_table[i])
	event_mask |= 1 << (i + 1);
    }

  return event_mask;
}

/**
 * gdk_window_foreign_new_for_display:
 * @display: the #GdkDisplay where the window handle comes from.
 * @anid: a native window handle.
 * 
 * Wraps a native window in a #GdkWindow.
 * This may fail if the window has been destroyed. If the window
 * was already known to GDK, a new reference to the existing 
 * #GdkWindow is returned.
 *
 * For example in the X backend, a native window handle is an Xlib
 * <type>XID</type>.
 * 
 * Return value: a #GdkWindow wrapper for the native window or 
 *   %NULL if the window has been destroyed. The wrapper will be
 *   newly created, if one doesn't exist already.
 *
 * Since: 2.2
 **/
GdkWindow *
gdk_window_foreign_new_for_display (GdkDisplay     *display,
				    GdkNativeWindow anid)
{
  GdkWindow *window;
  GdkWindowObject *private;
  GdkWindowImplX11 *impl;
  GdkDrawableImplX11 *draw_impl;
  GdkDisplayX11 *display_x11;
  XWindowAttributes attrs;
  Window root, parent;
  Window *children = NULL;
  guint nchildren;
  gboolean result;

  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);

  display_x11 = GDK_DISPLAY_X11 (display);

  if ((window = gdk_xid_table_lookup_for_display (display, anid)) != NULL)
    return g_object_ref (window);

  gdk_error_trap_push ();
  result = XGetWindowAttributes (display_x11->xdisplay, anid, &attrs);
  if (gdk_error_trap_pop () || !result)
    return NULL;

  /* FIXME: This is pretty expensive. Maybe the caller should supply
   *        the parent */
  gdk_error_trap_push ();
  result = XQueryTree (display_x11->xdisplay, anid, &root, &parent, &children, &nchildren);
  if (gdk_error_trap_pop () || !result)
    return NULL;

  if (children)
    XFree (children);
  
  window = g_object_new (GDK_TYPE_WINDOW, NULL);
  private = (GdkWindowObject *)window;
  impl = GDK_WINDOW_IMPL_X11 (private->impl);
  draw_impl = GDK_DRAWABLE_IMPL_X11 (private->impl);
  draw_impl->wrapper = GDK_DRAWABLE (window);
  draw_impl->screen = _gdk_x11_display_screen_for_xrootwin (display, root);
  
  private->parent = gdk_xid_table_lookup_for_display (display, parent);
  
  if (!private->parent || GDK_WINDOW_TYPE (private->parent) == GDK_WINDOW_FOREIGN)
    private->parent = (GdkWindowObject *) gdk_screen_get_root_window (draw_impl->screen);
  
  private->parent->children = g_list_prepend (private->parent->children, window);

  draw_impl->xid = anid;

  private->x = attrs.x;
  private->y = attrs.y;
  impl->width = attrs.width;
  impl->height = attrs.height;
  private->window_type = GDK_WINDOW_FOREIGN;
  private->destroyed = FALSE;

  private->event_mask = x_event_mask_to_gdk_event_mask (attrs.your_event_mask);

  if (attrs.map_state == IsUnmapped)
    private->state = GDK_WINDOW_STATE_WITHDRAWN;
  else
    private->state = 0;

  private->depth = attrs.depth;
  
  _gdk_window_init_position (GDK_WINDOW (private));

  g_object_ref (window);
  _gdk_xid_table_insert (display, &GDK_WINDOW_XID (window), window);
  return window;
}

/**
 * gdk_window_lookup_for_display:
 * @display: the #GdkDisplay corresponding to the window handle
 * @anid: a native window handle.
 *
 * Looks up the #GdkWindow that wraps the given native window handle.
 *
 * For example in the X backend, a native window handle is an Xlib
 * <type>XID</type>.
 *
 * Return value: the #GdkWindow wrapper for the native window, 
 *    or %NULL if there is none.
 *
 * Since: 2.2
 **/
GdkWindow *
gdk_window_lookup_for_display (GdkDisplay *display, GdkNativeWindow anid)
{
  return (GdkWindow*) gdk_xid_table_lookup_for_display (display, anid);
}

/**
 * gdk_window_lookup:
 * @anid: a native window handle.
 *
 * Looks up the #GdkWindow that wraps the given native window handle. 
 *
 * For example in the X backend, a native window handle is an Xlib
 * <type>XID</type>.
 *
 * Return value: the #GdkWindow wrapper for the native window, 
 *    or %NULL if there is none.
 **/
GdkWindow *
gdk_window_lookup (GdkNativeWindow anid)
{
  return (GdkWindow*) gdk_xid_table_lookup (anid);
}

static void
gdk_toplevel_x11_free_contents (GdkDisplay *display,
				GdkToplevelX11 *toplevel)
{
  if (toplevel->icon_window)
    {
      g_object_unref (toplevel->icon_window);
      toplevel->icon_window = NULL;
    }
  if (toplevel->icon_pixmap)
    {
      g_object_unref (toplevel->icon_pixmap);
      toplevel->icon_pixmap = NULL;
    }
  if (toplevel->icon_mask)
    {
      g_object_unref (toplevel->icon_mask);
      toplevel->icon_mask = NULL;
    }
  if (toplevel->group_leader)
    {
      g_object_unref (toplevel->group_leader);
      toplevel->group_leader = NULL;
    }
#ifdef HAVE_XSYNC
  if (toplevel->update_counter != None)
    {
      XSyncDestroyCounter (GDK_DISPLAY_XDISPLAY (display), 
			   toplevel->update_counter);
      toplevel->update_counter = None;

      XSyncIntToValue (&toplevel->current_counter_value, 0);
    }
#endif
}

void
_gdk_windowing_window_destroy (GdkWindow *window,
			       gboolean   recursing,
			       gboolean   foreign_destroy)
{
  GdkWindowObject *private = (GdkWindowObject *)window;
  GdkToplevelX11 *toplevel;
  GdkDrawableImplX11 *draw_impl;
  
  g_return_if_fail (GDK_IS_WINDOW (window));

  _gdk_selection_window_destroyed (window);
  
  if (private->extension_events != 0)
    _gdk_input_window_destroy (window);

  toplevel = _gdk_x11_window_get_toplevel (window);
  if (toplevel)
    gdk_toplevel_x11_free_contents (GDK_WINDOW_DISPLAY (window), toplevel);

  draw_impl = GDK_DRAWABLE_IMPL_X11 (private->impl);
    
  if (draw_impl->xft_draw)
    XftDrawDestroy (draw_impl->xft_draw);

  if (!recursing && !foreign_destroy)
    {
      XDestroyWindow (GDK_WINDOW_XDISPLAY (window), GDK_WINDOW_XID (window));
    }
}

void
_gdk_windowing_window_destroy_foreign (GdkWindow *window)
{
  /* It's somebody else's window, but in our heirarchy,
   * so reparent it to the root window, and then send
   * it a delete event, as if we were a WM
   */
  XClientMessageEvent xevent;
  
  gdk_error_trap_push ();
  gdk_window_hide (window);
  gdk_window_reparent (window, NULL, 0, 0);
  
  xevent.type = ClientMessage;
  xevent.window = GDK_WINDOW_XID (window);
  xevent.message_type = gdk_x11_get_xatom_by_name_for_display (GDK_WINDOW_DISPLAY (window),
							       "WM_PROTOCOLS");
  xevent.format = 32;
  xevent.data.l[0] = gdk_x11_get_xatom_by_name_for_display (GDK_WINDOW_DISPLAY (window),
							    "WM_DELETE_WINDOW");
  xevent.data.l[1] = CurrentTime;
  xevent.data.l[2] = 0;
  xevent.data.l[3] = 0;
  xevent.data.l[4] = 0;
  
  XSendEvent (GDK_WINDOW_XDISPLAY (window),
	      GDK_WINDOW_XID (window),
	      False, 0, (XEvent *)&xevent);
  gdk_display_sync (GDK_WINDOW_DISPLAY (window));
  gdk_error_trap_pop ();
}

static GdkWindow *
get_root (GdkWindow *window)
{
  GdkScreen *screen = gdk_drawable_get_screen (window);

  return gdk_screen_get_root_window (screen);
}

/* This function is called when the XWindow is really gone.
 */
void
gdk_window_destroy_notify (GdkWindow *window)
{
  GdkWindowImplX11 *window_impl;

  g_return_if_fail (window != NULL);
  
  window_impl = GDK_WINDOW_IMPL_X11 (((GdkWindowObject *)window)->impl);

  if (!GDK_WINDOW_DESTROYED (window))
    {
      if (GDK_WINDOW_TYPE(window) != GDK_WINDOW_FOREIGN)
	g_warning ("GdkWindow %#lx unexpectedly destroyed", GDK_WINDOW_XID (window));

      _gdk_window_destroy (window, TRUE);
    }
  
  _gdk_xid_table_remove (GDK_WINDOW_DISPLAY (window), GDK_WINDOW_XID (window));
  if (window_impl->toplevel && window_impl->toplevel->focus_window)
    _gdk_xid_table_remove (GDK_WINDOW_DISPLAY (window), window_impl->toplevel->focus_window);

  _gdk_xgrab_check_destroy (window);
  
  g_object_unref (window);
}

static void
update_wm_hints (GdkWindow *window,
		 gboolean   force)
{
  GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window);
  GdkWindowObject *private = (GdkWindowObject *)window;
  GdkDisplay *display = GDK_WINDOW_DISPLAY (window);
  XWMHints wm_hints;

  if (!force &&
      !toplevel->is_leader &&
      private->state & GDK_WINDOW_STATE_WITHDRAWN)
    return;

  wm_hints.flags = StateHint | InputHint;
  wm_hints.input = private->accept_focus ? True : False;
  wm_hints.initial_state = NormalState;
  
  if (private->state & GDK_WINDOW_STATE_ICONIFIED)
    {
      wm_hints.flags |= StateHint;
      wm_hints.initial_state = IconicState;
    }

  if (toplevel->icon_window && !GDK_WINDOW_DESTROYED (toplevel->icon_window))
    {
      wm_hints.flags |= IconWindowHint;
      wm_hints.icon_window = GDK_WINDOW_XID (toplevel->icon_window);
    }

  if (toplevel->icon_pixmap)
    {
      wm_hints.flags |= IconPixmapHint;
      wm_hints.icon_pixmap = GDK_PIXMAP_XID (toplevel->icon_pixmap);
    }

  if (toplevel->icon_mask)
    {
      wm_hints.flags |= IconMaskHint;
      wm_hints.icon_mask = GDK_PIXMAP_XID (toplevel->icon_mask);
    }
  
  wm_hints.flags |= WindowGroupHint;
  if (toplevel->group_leader && !GDK_WINDOW_DESTROYED (toplevel->group_leader))
    {
      wm_hints.flags |= WindowGroupHint;
      wm_hints.window_group = GDK_WINDOW_XID (toplevel->group_leader);
    }
  else
    wm_hints.window_group = GDK_DISPLAY_X11 (display)->leader_window;
  
  XSetWMHints (GDK_WINDOW_XDISPLAY (window),
	       GDK_WINDOW_XID (window),
	       &wm_hints);
}

static void
set_initial_hints (GdkWindow *window)
{
  GdkDisplay *display = GDK_WINDOW_DISPLAY (window);
  Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
  Window xwindow = GDK_WINDOW_XID (window);  
  GdkWindowObject *private;
  GdkToplevelX11 *toplevel;
  Atom atoms[7];
  gint i;

  private = (GdkWindowObject*) window;
  toplevel = _gdk_x11_window_get_toplevel (window);

  if (!toplevel)
    return;

  update_wm_hints (window, TRUE);
  
  /* We set the spec hints regardless of whether the spec is supported,
   * since it can't hurt and it's kind of expensive to check whether
   * it's supported.
   */
  
  i = 0;

  if (private->state & GDK_WINDOW_STATE_MAXIMIZED)
    {
      atoms[i] = gdk_x11_get_xatom_by_name_for_display (display,
							"_NET_WM_STATE_MAXIMIZED_VERT");
      ++i;
      atoms[i] = gdk_x11_get_xatom_by_name_for_display (display,
							"_NET_WM_STATE_MAXIMIZED_HORZ");
      ++i;
    }

  if (private->state & GDK_WINDOW_STATE_ABOVE)
    {
      atoms[i] = gdk_x11_get_xatom_by_name_for_display (display,
							"_NET_WM_STATE_ABOVE");
      ++i;
    }
  
  if (private->state & GDK_WINDOW_STATE_BELOW)
    {
      atoms[i] = gdk_x11_get_xatom_by_name_for_display (display,
							"_NET_WM_STATE_BELOW");
      ++i;
    }
  
  if (private->state & GDK_WINDOW_STATE_STICKY)
    {
      atoms[i] = gdk_x11_get_xatom_by_name_for_display (display,
							"_NET_WM_STATE_STICKY");
      ++i;
    }

  if (private->state & GDK_WINDOW_STATE_FULLSCREEN)
    {
      atoms[i] = gdk_x11_get_xatom_by_name_for_display (display,
							"_NET_WM_STATE_FULLSCREEN");
      ++i;
    }

  if (private->modal_hint)
    {
      atoms[i] = gdk_x11_get_xatom_by_name_for_display (display,
							"_NET_WM_STATE_MODAL");
      ++i;
    }

  if (toplevel->skip_taskbar_hint)
    {
      atoms[i] = gdk_x11_get_xatom_by_name_for_display (display,
							"_NET_WM_STATE_SKIP_TASKBAR");
      ++i;
    }

  if (toplevel->skip_pager_hint)
    {
      atoms[i] = gdk_x11_get_xatom_by_name_for_display (display,
							"_NET_WM_STATE_SKIP_PAGER");
      ++i;
    }

  if (i > 0)
    {
      XChangeProperty (xdisplay,
                       xwindow,
		       gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE"),
                       XA_ATOM, 32, PropModeReplace,
                       (guchar*) atoms, i);
    }
  else 
    {
      XDeleteProperty (xdisplay,
                       xwindow,
		       gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE"));
    }

  if (private->state & GDK_WINDOW_STATE_STICKY)
    {
      atoms[0] = 0xFFFFFFFF;
      XChangeProperty (xdisplay,
                       xwindow,
		       gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_DESKTOP"),
                       XA_CARDINAL, 32, PropModeReplace,
                       (guchar*) atoms, 1);
    }
  else
    {
      XDeleteProperty (xdisplay,
                       xwindow,
		       gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_DESKTOP"));
    }

  toplevel->map_serial = NextRequest (xdisplay);
}

static void
show_window_internal (GdkWindow *window,
                      gboolean   raise)
{
  GdkWindowObject *private;
  GdkDisplay *display;
  GdkDisplayX11 *display_x11;