C++ (Cpp) _gdk_x11_screen_window_manager_changed примеры использования

Пример #1

Файл: gdkscreen-x11.c Проект: GYGit/gtk

static void
fetch_net_wm_check_window (GdkScreen *screen)
{
  GdkX11Screen *x11_screen;
  GdkDisplay *display;
  Window window;
  GTimeVal tv;
  gint error;

  x11_screen = GDK_X11_SCREEN (screen);
  display = x11_screen->display;

  g_return_if_fail (GDK_X11_DISPLAY (display)->trusted_client);

  if (x11_screen->wmspec_check_window != None)
    return; /* already have it */

  g_get_current_time (&tv);

  if (ABS  (tv.tv_sec - x11_screen->last_wmspec_check_time) < 15)
    return; /* we've checked recently */

  window = get_net_supporting_wm_check (x11_screen, x11_screen->xroot_window);
  if (window == None)
    return;

  if (window != get_net_supporting_wm_check (x11_screen, window))
    return;

  gdk_x11_display_error_trap_push (display);

  /* Find out if this WM goes away, so we can reset everything. */
  XSelectInput (x11_screen->xdisplay, window, StructureNotifyMask);

  error = gdk_x11_display_error_trap_pop (display);
  if (!error)
    {
      /* We check the window property again because after XGetWindowProperty()
       * and before XSelectInput() the window may have been recycled in such a
       * way that XSelectInput() doesn't fail but the window is no longer what
       * we want.
       */
      if (window != get_net_supporting_wm_check (x11_screen, window))
        return;

      x11_screen->wmspec_check_window = window;
      x11_screen->last_wmspec_check_time = tv.tv_sec;
      x11_screen->need_refetch_net_supported = TRUE;
      x11_screen->need_refetch_wm_name = TRUE;

      /* Careful, reentrancy */
      _gdk_x11_screen_window_manager_changed (screen);
    }
}

Пример #2

Файл: gdkscreen-x11.c Проект: nacho/gtk-

static void
fetch_net_wm_check_window (GdkScreen *screen)
{
  GdkX11Screen *x11_screen;
  GdkDisplay *display;
  Atom type;
  gint format;
  gulong n_items;
  gulong bytes_after;
  guchar *data;
  Window *xwindow;
  GTimeVal tv;
  gint error;

  x11_screen = GDK_X11_SCREEN (screen);
  display = x11_screen->display;

  g_return_if_fail (GDK_X11_DISPLAY (display)->trusted_client);
  
  g_get_current_time (&tv);

  if (ABS  (tv.tv_sec - x11_screen->last_wmspec_check_time) < 15)
    return; /* we've checked recently */

  x11_screen->last_wmspec_check_time = tv.tv_sec;

  data = NULL;
  XGetWindowProperty (x11_screen->xdisplay, x11_screen->xroot_window,
		      gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTING_WM_CHECK"),
		      0, G_MAXLONG, False, XA_WINDOW, &type, &format,
		      &n_items, &bytes_after, &data);
  
  if (type != XA_WINDOW)
    {
      if (data)
        XFree (data);
      return;
    }

  xwindow = (Window *)data;

  if (x11_screen->wmspec_check_window == *xwindow)
    {
      XFree (xwindow);
      return;
    }

  gdk_x11_display_error_trap_push (display);

  /* Find out if this WM goes away, so we can reset everything. */
  XSelectInput (x11_screen->xdisplay, *xwindow, StructureNotifyMask);

  error = gdk_x11_display_error_trap_pop (display);
  if (!error)
    {
      x11_screen->wmspec_check_window = *xwindow;
      x11_screen->need_refetch_net_supported = TRUE;
      x11_screen->need_refetch_wm_name = TRUE;

      /* Careful, reentrancy */
      _gdk_x11_screen_window_manager_changed (GDK_SCREEN (x11_screen));
    }
  else if (error == BadWindow)
    {
      /* Leftover property, try again immediately, new wm may be starting up */
      x11_screen->last_wmspec_check_time = 0;
    }

  XFree (xwindow);
}