gdkwindow-x11.c

linux下电话本所依赖的一些图形库

  
  private->window_type = GDK_WINDOW_ROOT;
  private->depth = DefaultDepthOfScreen (screen_x11->xscreen);
  
  impl->width = WidthOfScreen (screen_x11->xscreen);
  impl->height = HeightOfScreen (screen_x11->xscreen);
  
  _gdk_window_init_position (GDK_WINDOW (private));

  _gdk_xid_table_insert (screen_x11->display,
			 &screen_x11->xroot_window,
			 screen_x11->root_window);
}

static void
set_wm_protocols (GdkWindow *window)
{
  GdkDisplay *display = gdk_drawable_get_display (window);
  Atom protocols[4];
  int n = 0;
  
  protocols[n++] = gdk_x11_get_xatom_by_name_for_display (display, "WM_DELETE_WINDOW");
  protocols[n++] = gdk_x11_get_xatom_by_name_for_display (display, "WM_TAKE_FOCUS");
  protocols[n++] = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PING");

#ifdef HAVE_XSYNC
  if (GDK_DISPLAY_X11 (display)->use_sync)
    protocols[n++] = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_SYNC_REQUEST");
#endif
  
  XSetWMProtocols (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (window), protocols, n);
}

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

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

  return title;
}

static void
check_leader_window_title (GdkDisplay *display)
{
  GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);

  if (display_x11->leader_window && !display_x11->leader_window_title_set)
    {
      set_wm_name (display,
		   display_x11->leader_window,
		   get_default_title ());
      
      display_x11->leader_window_title_set = TRUE;
    }
}

static Window
create_focus_window (Display *xdisplay,
		     XID      parent)
{
  Window focus_window = XCreateSimpleWindow (xdisplay, parent,
					     -1, -1, 1, 1, 0,
					     0, 0);
  
  /* FIXME: probably better to actually track the requested event mask for the toplevel
   */
  XSelectInput (xdisplay, focus_window,
		KeyPressMask | KeyReleaseMask | FocusChangeMask);
  
  XMapWindow (xdisplay, focus_window);

  return focus_window;
}

static void
ensure_sync_counter (GdkWindow *window)
{
#ifdef HAVE_XSYNC
  if (!GDK_WINDOW_DESTROYED (window))
    {
      GdkDisplay *display = GDK_WINDOW_DISPLAY (window);
      GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window);
      GdkWindowObject *private = (GdkWindowObject *)window;
      GdkWindowImplX11 *impl = GDK_WINDOW_IMPL_X11 (private->impl);

      if (toplevel && impl->use_synchronized_configure &&
	  toplevel->update_counter == None &&
	  GDK_DISPLAY_X11 (display)->use_sync)
	{
	  Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
	  XSyncValue value;
	  Atom atom;

	  XSyncIntToValue (&value, 0);
	  
	  toplevel->update_counter = XSyncCreateCounter (xdisplay, value);
	  
	  atom = gdk_x11_get_xatom_by_name_for_display (display,
							"_NET_WM_SYNC_REQUEST_COUNTER");
	  
	  XChangeProperty (xdisplay, GDK_WINDOW_XID (window),
			   atom, XA_CARDINAL,
			   32, PropModeReplace,
			   (guchar *)&toplevel->update_counter, 1);
	  
	  XSyncIntToValue (&toplevel->current_counter_value, 0);
	}
    }
#endif
}

static void
setup_toplevel_window (GdkWindow *window, 
		       GdkWindow *parent)
{
  GdkWindowObject *obj = (GdkWindowObject *)window;
  GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window);
  GdkWindowImplX11 *impl = (GdkWindowImplX11 *)obj->impl;
  Display *xdisplay = GDK_WINDOW_XDISPLAY (window);
  XID xid = GDK_WINDOW_XID (window);
  XID xparent = GDK_WINDOW_XID (parent);
  GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (GDK_WINDOW_SCREEN (parent));
  XSizeHints size_hints;
  long pid;
    
  if (GDK_WINDOW_TYPE (window) == GDK_WINDOW_DIALOG)
    XSetTransientForHint (xdisplay, xid, xparent);
  
  set_wm_protocols (window);
  
  if (!obj->input_only)
    {
      /* The focus window is off the visible area, and serves to receive key
       * press events so they don't get sent to child windows.
       */
      toplevel->focus_window = create_focus_window (xdisplay, xid);
      _gdk_xid_table_insert (screen_x11->display, &toplevel->focus_window, window);
    }
  
  check_leader_window_title (screen_x11->display);
  
  /* FIXME: Is there any point in doing this? Do any WM's pay
   * attention to PSize, and even if they do, is this the
   * correct value???
   */
  size_hints.flags = PSize;
  size_hints.width = impl->width;
  size_hints.height = impl->height;
  
  XSetWMNormalHints (xdisplay, xid, &size_hints);
  
  /* This will set WM_CLIENT_MACHINE and WM_LOCALE_NAME */
  XSetWMProperties (xdisplay, xid, NULL, NULL, NULL, 0, NULL, NULL, NULL);
  
  pid = getpid ();
  XChangeProperty (xdisplay, xid,
		   gdk_x11_get_xatom_by_name_for_display (screen_x11->display, "_NET_WM_PID"),
		   XA_CARDINAL, 32,
		   PropModeReplace,
		   (guchar *)&pid, 1);
  
  XChangeProperty (xdisplay, xid, 
		   gdk_x11_get_xatom_by_name_for_display (screen_x11->display, "WM_CLIENT_LEADER"),
		   XA_WINDOW, 32, PropModeReplace,
		   (guchar *) &GDK_DISPLAY_X11 (screen_x11->display)->leader_window, 1);

  if (!obj->focus_on_map)
    gdk_x11_window_set_user_time (window, 0);
  else if (GDK_DISPLAY_X11 (screen_x11->display)->user_time != 0)
    gdk_x11_window_set_user_time (window, GDK_DISPLAY_X11 (screen_x11->display)->user_time);

  ensure_sync_counter (window);
}

/**
 * gdk_window_new:
 * @parent: a #GdkWindow, or %NULL to create the window as a child of
 *   the default root window for the default display.
 * @attributes: attributes of the new window
 * @attributes_mask: mask indicating which fields in @attributes are valid
 * 
 * Creates a new #GdkWindow using the attributes from
 * @attributes. See #GdkWindowAttr and #GdkWindowAttributesType for
 * more details.  Note: to use this on displays other than the default
 * display, @parent must be specified.
 * 
 * Return value: the new #GdkWindow
 **/
GdkWindow*
gdk_window_new (GdkWindow     *parent,
		GdkWindowAttr *attributes,
		gint           attributes_mask)
{
  GdkWindow *window;
  GdkWindowObject *private;
  GdkWindowImplX11 *impl;
  GdkDrawableImplX11 *draw_impl;
  GdkScreenX11 *screen_x11;
  GdkScreen *screen;
  
  GdkVisual *visual;
  Window xparent;
  Visual *xvisual;
  Display *xdisplay;
  Window xid;

  XSetWindowAttributes xattributes;
  long xattributes_mask;
  XClassHint *class_hint;
  int x, y, depth;
  
  unsigned int class;
  const char *title;
  int i;
  
  g_return_val_if_fail (attributes != NULL, NULL);
  
  if (!parent)
    {
      GDK_NOTE (MULTIHEAD,
		g_warning ("gdk_window_new(): no parent specified reverting to parent = default root window"));
      
      screen = gdk_screen_get_default ();
      parent = gdk_screen_get_root_window (screen);
    }
  else
    screen = gdk_drawable_get_screen (parent);

  screen_x11 = GDK_SCREEN_X11 (screen);

  g_return_val_if_fail (GDK_IS_WINDOW (parent), NULL);
  
  if (GDK_WINDOW_DESTROYED (parent))
    return NULL;
  
  xparent = GDK_WINDOW_XID (parent);
  
  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 = screen;
  xdisplay = screen_x11->xdisplay;

  /* Windows with a foreign parent are treated as if they are children
   * of the root window, except for actual creation.
   */
  if (GDK_WINDOW_TYPE (parent) == GDK_WINDOW_FOREIGN)
    parent = gdk_screen_get_root_window (screen);
  
  private->parent = (GdkWindowObject *)parent;

  private->accept_focus = TRUE;
  private->focus_on_map = TRUE;

  xattributes_mask = 0;
  
  if (attributes_mask & GDK_WA_X)
    x = attributes->x;
  else
    x = 0;
  
  if (attributes_mask & GDK_WA_Y)
    y = attributes->y;
  else
    y = 0;
  
  private->x = x;
  private->y = y;
  impl->width = (attributes->width > 1) ? (attributes->width) : (1);
  impl->height = (attributes->height > 1) ? (attributes->height) : (1);

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

  _gdk_window_init_position (GDK_WINDOW (private));
  if (impl->position_info.big)
    private->guffaw_gravity = TRUE;
  
  if (attributes_mask & GDK_WA_VISUAL)
    visual = attributes->visual;
  else
    visual = gdk_screen_get_system_visual (screen);
  xvisual = ((GdkVisualPrivate*) visual)->xvisual;
  
  xattributes.event_mask = StructureNotifyMask | PropertyChangeMask;
  for (i = 0; i < _gdk_nenvent_masks; i++)
    {
      if (attributes->event_mask & (1 << (i + 1)))
	xattributes.event_mask |= _gdk_event_mask_table[i];
    }
  private->event_mask = attributes->event_mask;
  
  if (xattributes.event_mask)
    xattributes_mask |= CWEventMask;
  
  if (attributes_mask & GDK_WA_NOREDIR)
    {
      xattributes.override_redirect =
	(attributes->override_redirect == FALSE)?False:True;
      xattributes_mask |= CWOverrideRedirect;
    } 
  else
    xattributes.override_redirect = False;

  impl->override_redirect = xattributes.override_redirect;
  
  if (private->parent && private->parent->guffaw_gravity)
    {
      xattributes.win_gravity = StaticGravity;
      xattributes_mask |= CWWinGravity;
    }
  
  /* 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");
	  xparent = GDK_SCREEN_XROOTWIN (screen);
	}
    case GDK_WINDOW_CHILD:
      break;
    default:
      g_warning (G_STRLOC "cannot make windows of type %d", private->window_type);
      return NULL;
    }
	  
  if (attributes->wclass == GDK_INPUT_OUTPUT)
    {
      class = InputOutput;
      depth = visual->depth;

      private->input_only = FALSE;
      private->depth = depth;
      
      if (attributes_mask & GDK_WA_COLORMAP)
        {
          draw_impl->colormap = attributes->colormap;
          g_object_ref (attributes->colormap);
        }
      else
	{
	  if ((((GdkVisualPrivate *)gdk_screen_get_system_visual (screen))->xvisual) ==  xvisual)
            {
	      draw_impl->colormap = gdk_screen_get_system_colormap (screen);
              g_object_ref (draw_impl->colormap);
            }
	  else
            {
              draw_impl->colormap = gdk_colormap_new (visual, FALSE);
            }
	}
      
      private->bg_color.pixel = BlackPixel (xdisplay, screen_x11->screen_num);
      xattributes.background_pixel = private->bg_color.pixel;

      private->bg_pixmap = NULL;
      
      xattributes.border_pixel = BlackPixel (xdisplay, screen_x11->screen_num);
      xattributes_mask |= CWBorderPixel | CWBackPixel;

      if (private->guffaw_gravity)
	xattributes.bit_gravity = StaticGravity;
      else
	xattributes.bit_gravity = NorthWestGravity;
      
      xattributes_mask |= CWBitGravity;

      xattributes.colormap = GDK_COLORMAP_XCOLORMAP (draw_impl->colormap);
      xattributes_mask |= CWColormap;

      if (private->window_type == GDK_WINDOW_TEMP)
	{
	  xattributes.save_under = True;
	  xattributes.override_redirect = True;
	  xattributes.cursor = None;
	  xattributes_mask |= CWSaveUnder | CWOverrideRedirect;

	  impl->override_redirect = TRUE;
	}
    }
  else
    {
      depth = 0;
      private->depth = 0;
      class = InputOnly;
      private->input_only = TRUE;
      draw_impl->colormap = gdk_screen_get_system_colormap (screen);
      g_object_ref (draw_impl->colormap);
    }

  xid = draw_impl->xid = XCreateWindow (xdisplay, xparent,
					impl->position_info.x, impl->position_info.y,
					impl->position_info.width, impl->position_info.height,
					0, depth, class, xvisual,
					xattributes_mask, &xattributes);

  g_object_ref (window);
  _gdk_xid_table_insert (screen_x11->display, &draw_impl->xid, window);
  
  gdk_window_set_cursor (window, ((attributes_mask & GDK_WA_CURSOR) ?
				  (attributes->cursor) :
				  NULL));
  
  if (private->parent)
    private->parent->children = g_list_prepend (private->parent->children, window);
  
  switch (GDK_WINDOW_TYPE (private))
    {
    case GDK_WINDOW_DIALOG:
    case GDK_WINDOW_TOPLEVEL:
    case GDK_WINDOW_TEMP:
      if (attributes_mask & GDK_WA_TITLE)
	title = attributes->title;
      else
	title = get_default_title ();
      
      gdk_window_set_title (window, title);
      
      if (attributes_mask & GDK_WA_WMCLASS)
	{
	  class_hint = XAllocClassHint ();
	  class_hint->res_name = attributes->wmclass_name;
	  class_hint->res_class = attributes->wmclass_class;
	  XSetClassHint (xdisplay, xid, class_hint);
	  XFree (class_hint);
	}
  
      setup_toplevel_window (window, parent);
      break;

    case GDK_WINDOW_CHILD:
      if ((attributes->wclass == GDK_INPUT_OUTPUT) &&
	  (draw_impl->colormap != gdk_screen_get_system_colormap (screen)) &&
	  (draw_impl->colormap != gdk_drawable_get_colormap (gdk_window_get_toplevel (window))))
	{
	  GDK_NOTE (MISC, g_message ("adding colormap window\n"));
	  gdk_window_add_colormap_windows (window);
	}
      break;
      
    default:
      break;
    }

  return window;