pixbuf-rc-style.c

This GTK+ version 2.12.3. GTK+ is a multi-platform toolkit for creating graphical user interfaces.

  guint               token;

  token = g_scanner_get_next_token(scanner);
  if (token != TOKEN_ARROW_DIRECTION)
    return TOKEN_ARROW_DIRECTION;

  token = g_scanner_get_next_token(scanner);
  if (token != G_TOKEN_EQUAL_SIGN)
    return G_TOKEN_EQUAL_SIGN;

  token = g_scanner_get_next_token(scanner);
  if (token == TOKEN_UP)
    data->match_data.arrow_direction = GTK_ARROW_UP;
  else if (token == TOKEN_DOWN)
    data->match_data.arrow_direction = GTK_ARROW_DOWN;
  else if (token == TOKEN_LEFT)
    data->match_data.arrow_direction = GTK_ARROW_LEFT;
  else if (token == TOKEN_RIGHT)
    data->match_data.arrow_direction = GTK_ARROW_RIGHT;
  else
    return TOKEN_UP;

  data->match_data.flags |= THEME_MATCH_ARROW_DIRECTION;
  
  return G_TOKEN_NONE;
}

static guint
theme_parse_gap_side(GScanner * scanner,
		     ThemeImage * data)
{
  guint               token;

  token = g_scanner_get_next_token(scanner);
  if (token != TOKEN_GAP_SIDE)
    return TOKEN_GAP_SIDE;

  token = g_scanner_get_next_token(scanner);
  if (token != G_TOKEN_EQUAL_SIGN)
    return G_TOKEN_EQUAL_SIGN;

  token = g_scanner_get_next_token(scanner);

  if (token == TOKEN_TOP)
    data->match_data.gap_side = GTK_POS_TOP;
  else if (token == TOKEN_BOTTOM)
    data->match_data.gap_side = GTK_POS_BOTTOM;
  else if (token == TOKEN_LEFT)
    data->match_data.gap_side = GTK_POS_LEFT;
  else if (token == TOKEN_RIGHT)
    data->match_data.gap_side = GTK_POS_RIGHT;
  else
    return TOKEN_TOP;

  data->match_data.flags |= THEME_MATCH_GAP_SIDE;
  
  return G_TOKEN_NONE;
}

static guint
theme_parse_orientation(GScanner * scanner,
			ThemeImage * data)
{
  guint               token;

  token = g_scanner_get_next_token(scanner);
  if (token != TOKEN_ORIENTATION)
    return TOKEN_ORIENTATION;

  token = g_scanner_get_next_token(scanner);
  if (token != G_TOKEN_EQUAL_SIGN)
    return G_TOKEN_EQUAL_SIGN;

  token = g_scanner_get_next_token(scanner);

  if (token == TOKEN_HORIZONTAL)
    data->match_data.orientation = GTK_ORIENTATION_HORIZONTAL;
  else if (token == TOKEN_VERTICAL)
    data->match_data.orientation = GTK_ORIENTATION_VERTICAL;
  else
    return TOKEN_HORIZONTAL;

  data->match_data.flags |= THEME_MATCH_ORIENTATION;
  
  return G_TOKEN_NONE;
}

static guint
theme_parse_expander_style(GScanner * scanner,
			   ThemeImage * data)
{
  guint               token;

  token = g_scanner_get_next_token(scanner);
  if (token != TOKEN_EXPANDER_STYLE)
    return TOKEN_EXPANDER_STYLE;

  token = g_scanner_get_next_token(scanner);
  if (token != G_TOKEN_EQUAL_SIGN)
    return G_TOKEN_EQUAL_SIGN;

  token = g_scanner_get_next_token(scanner);
  if (token == TOKEN_COLLAPSED)
    data->match_data.expander_style = GTK_EXPANDER_COLLAPSED;
  else if (token == TOKEN_SEMI_COLLAPSED)
    data->match_data.expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
  else if (token == TOKEN_SEMI_EXPANDED)
    data->match_data.expander_style = GTK_EXPANDER_SEMI_EXPANDED;
  else if (token == TOKEN_EXPANDED)
    data->match_data.expander_style = GTK_EXPANDER_EXPANDED;
  else
    return TOKEN_COLLAPSED;

  data->match_data.flags |= THEME_MATCH_EXPANDER_STYLE;

  return G_TOKEN_NONE;
}

static guint
theme_parse_window_edge(GScanner * scanner,
			ThemeImage * data)
{
  guint               token;

  token = g_scanner_get_next_token(scanner);
  if (token != TOKEN_WINDOW_EDGE)
    return TOKEN_WINDOW_EDGE;

  token = g_scanner_get_next_token(scanner);
  if (token != G_TOKEN_EQUAL_SIGN)
    return G_TOKEN_EQUAL_SIGN;

  token = g_scanner_get_next_token(scanner);
  if (token == TOKEN_NORTH_WEST)
    data->match_data.window_edge = GDK_WINDOW_EDGE_NORTH_WEST;
  else if (token == TOKEN_NORTH)
    data->match_data.window_edge = GDK_WINDOW_EDGE_NORTH;
  else if (token == TOKEN_NORTH_EAST)
    data->match_data.window_edge = GDK_WINDOW_EDGE_NORTH_EAST;
  else if (token == TOKEN_WEST)
    data->match_data.window_edge = GDK_WINDOW_EDGE_WEST;
  else if (token == TOKEN_EAST)
    data->match_data.window_edge = GDK_WINDOW_EDGE_EAST;
  else if (token == TOKEN_SOUTH_WEST)
    data->match_data.window_edge = GDK_WINDOW_EDGE_SOUTH_WEST;
  else if (token == TOKEN_SOUTH)
    data->match_data.window_edge = GDK_WINDOW_EDGE_SOUTH;
  else if (token == TOKEN_SOUTH_EAST)
    data->match_data.window_edge = GDK_WINDOW_EDGE_SOUTH_EAST;
  else
    return TOKEN_NORTH_WEST;

  data->match_data.flags |= THEME_MATCH_WINDOW_EDGE;

  return G_TOKEN_NONE;
}

static void
theme_image_ref (ThemeImage *data)
{
  data->refcount++;
}

static void
theme_image_unref (ThemeImage *data)
{
  data->refcount--;
  if (data->refcount == 0)
    {
      g_free (data->match_data.detail);
      if (data->background)
	theme_pixbuf_destroy (data->background);
      if (data->overlay)
	theme_pixbuf_destroy (data->overlay);
      if (data->gap_start)
	theme_pixbuf_destroy (data->gap_start);
      if (data->gap)
	theme_pixbuf_destroy (data->gap);
      if (data->gap_end)
	theme_pixbuf_destroy (data->gap_end);
      g_free (data);
    }
}

static guint
theme_parse_image(GtkSettings  *settings,
		  GScanner      *scanner,
		  PixbufRcStyle *pixbuf_style,
		  ThemeImage   **data_return)
{
  guint               token;
  ThemeImage *data;

  data = NULL;
  token = g_scanner_get_next_token(scanner);
  if (token != TOKEN_IMAGE)
    return TOKEN_IMAGE;

  token = g_scanner_get_next_token(scanner);
  if (token != G_TOKEN_LEFT_CURLY)
    return G_TOKEN_LEFT_CURLY;

  data = g_malloc(sizeof(ThemeImage));

  data->refcount = 1;

  data->background = NULL;
  data->overlay = NULL;
  data->gap_start = NULL;
  data->gap = NULL;
  data->gap_end = NULL;

  data->recolorable = FALSE;

  data->match_data.function = 0;
  data->match_data.detail = NULL;
  data->match_data.flags = 0;

  token = g_scanner_peek_next_token(scanner);
  while (token != G_TOKEN_RIGHT_CURLY)
    {
      switch (token)
	{
	case TOKEN_FUNCTION:
	  token = theme_parse_function(scanner, data);
	  break;
	case TOKEN_RECOLORABLE:
	  token = theme_parse_recolorable(scanner, data);
	  break;
	case TOKEN_DETAIL:
	  token = theme_parse_detail(scanner, data);
	  break;
	case TOKEN_STATE:
	  token = theme_parse_state(scanner, data);
	  break;
	case TOKEN_SHADOW:
	  token = theme_parse_shadow(scanner, data);
	  break;
	case TOKEN_GAP_SIDE:
	  token = theme_parse_gap_side(scanner, data);
	  break;
	case TOKEN_ARROW_DIRECTION:
	  token = theme_parse_arrow_direction(scanner, data);
	  break;
	case TOKEN_ORIENTATION:
	  token = theme_parse_orientation(scanner, data);
	  break;
	case TOKEN_FILE:
	  token = theme_parse_file(settings, scanner, &data->background);
	  break;
	case TOKEN_BORDER:
	  token = theme_parse_border(scanner, &data->background);
	  break;
	case TOKEN_STRETCH:
	  token = theme_parse_stretch(scanner, &data->background);
	  break;
	case TOKEN_GAP_FILE:
	  token = theme_parse_file(settings, scanner, &data->gap);
	  break;
	case TOKEN_GAP_BORDER:
	  token = theme_parse_border(scanner, &data->gap);
	  break;
	case TOKEN_GAP_START_FILE:
	  token = theme_parse_file(settings, scanner, &data->gap_start);
	  break;
	case TOKEN_GAP_START_BORDER:
	  token = theme_parse_border(scanner, &data->gap_start);
	  break;
	case TOKEN_GAP_END_FILE:
	  token = theme_parse_file(settings, scanner, &data->gap_end);
	  break;
	case TOKEN_GAP_END_BORDER:
	  token = theme_parse_border(scanner, &data->gap_end);
	  break;
	case TOKEN_OVERLAY_FILE:
	  token = theme_parse_file(settings, scanner, &data->overlay);
	  break;
	case TOKEN_OVERLAY_BORDER:
	  token = theme_parse_border(scanner, &data->overlay);
	  break;
	case TOKEN_OVERLAY_STRETCH:
	  token = theme_parse_stretch(scanner, &data->overlay);
	  break;
	case TOKEN_EXPANDER_STYLE:
	  token = theme_parse_expander_style(scanner, data);
	  break;
	case TOKEN_WINDOW_EDGE:
	  token = theme_parse_window_edge(scanner, data);
	  break;
	default:
	  g_scanner_get_next_token(scanner);
	  token = G_TOKEN_RIGHT_CURLY;
	  break;
	}
      if (token != G_TOKEN_NONE)
	{
	  /* error - cleanup for exit */
	  theme_image_unref (data);
	  *data_return = NULL;
	  return token;
	}
      token = g_scanner_peek_next_token(scanner);
    }

  token = g_scanner_get_next_token(scanner);

  if (data->background && !data->background->filename)
    {
      g_scanner_warn (scanner, "Background image options specified without filename");
      theme_pixbuf_destroy (data->background);
      data->background = NULL;
    }

  if (data->overlay && !data->overlay->filename)
    {
      g_scanner_warn (scanner, "Overlay image options specified without filename");
      theme_pixbuf_destroy (data->overlay);
      data->overlay = NULL;
    }

  if (token != G_TOKEN_RIGHT_CURLY)
    {
      /* error - cleanup for exit */
      theme_image_unref (data);
      *data_return = NULL;
      return G_TOKEN_RIGHT_CURLY;
    }

  /* everything is fine now - insert yer cruft */
  *data_return = data;
  return G_TOKEN_NONE;
}

static guint
pixbuf_rc_style_parse (GtkRcStyle *rc_style,
		       GtkSettings  *settings,
		       GScanner   *scanner)
		     
{
  static GQuark scope_id = 0;
  PixbufRcStyle *pixbuf_style = PIXBUF_RC_STYLE (rc_style);

  guint old_scope;
  guint token;
  gint i;
  ThemeImage *img;
  
  /* Set up a new scope in this scanner. */

  if (!scope_id)
    scope_id = g_quark_from_string("pixbuf_theme_engine");

  /* If we bail out due to errors, we *don't* reset the scope, so the
   * error messaging code can make sense of our tokens.
   */
  old_scope = g_scanner_set_scope(scanner, scope_id);

  /* Now check if we already added our symbols to this scope
   * (in some previous call to theme_parse_rc_style for the
   * same scanner.
   */

  if (!g_scanner_lookup_symbol(scanner, theme_symbols[0].name))
    {
      for (i = 0; i < G_N_ELEMENTS (theme_symbols); i++)
	g_scanner_scope_add_symbol(scanner, scope_id,
				   theme_symbols[i].name,
				   GINT_TO_POINTER(theme_symbols[i].token));
    }

  /* We're ready to go, now parse the top level */

  token = g_scanner_peek_next_token(scanner);
  while (token != G_TOKEN_RIGHT_CURLY)
    {
      switch (token)
	{
	case TOKEN_IMAGE:
	  img = NULL;
	  token = theme_parse_image(settings, scanner, pixbuf_style, &img);
	  break;
	default:
	  g_scanner_get_next_token(scanner);
	  token = G_TOKEN_RIGHT_CURLY;
	  break;
	}

      if (token != G_TOKEN_NONE)
	return token;
      else
	pixbuf_style->img_list = g_list_append(pixbuf_style->img_list, img);

      token = g_scanner_peek_next_token(scanner);
    }

  g_scanner_get_next_token(scanner);

  g_scanner_set_scope(scanner, old_scope);

  return G_TOKEN_NONE;
}

static void
pixbuf_rc_style_merge (GtkRcStyle *dest,
		       GtkRcStyle *src)
{
  if (PIXBUF_IS_RC_STYLE (src))
    {
      PixbufRcStyle *pixbuf_dest = PIXBUF_RC_STYLE (dest);
      PixbufRcStyle *pixbuf_src = PIXBUF_RC_STYLE (src);
      GList *tmp_list1, *tmp_list2;
      
      if (pixbuf_src->img_list)
	{
	  /* Copy src image list and append to dest image list */
	  
	  tmp_list2 = g_list_last (pixbuf_dest->img_list);
	  tmp_list1 = pixbuf_src->img_list;
	  
	  while (tmp_list1)
	    {
	      if (tmp_list2)
		{
		  tmp_list2->next = g_list_alloc();
		  tmp_list2->next->data = tmp_list1->data;
		  tmp_list2->next->prev = tmp_list2;
		  
		  tmp_list2 = tmp_list2->next;
		}
	      else
		{
		  pixbuf_dest->img_list = g_list_append (NULL, tmp_list1->data);
		  tmp_list2 = pixbuf_dest->img_list;
		}
	      
	      theme_image_ref (tmp_list1->data);
	      tmp_list1 = tmp_list1->next;
	    }
	}
    }

  parent_class->merge (dest, src);
}

/* Create an empty style suitable to this RC style
 */
static GtkStyle *
pixbuf_rc_style_create_style (GtkRcStyle *rc_style)
{
  return g_object_new (PIXBUF_TYPE_STYLE, NULL);
}