diff options
Diffstat (limited to 'pango/reorder-items.c')
-rw-r--r-- | pango/reorder-items.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/pango/reorder-items.c b/pango/reorder-items.c deleted file mode 100644 index 27ce905c..00000000 --- a/pango/reorder-items.c +++ /dev/null @@ -1,118 +0,0 @@ -/* Pango - * reorder-items.c: - * - * Copyright (C) 1999 Red Hat Software - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#include "config.h" -#include "pango-item-private.h" - -/* - * NB: The contents of the file implement the exact same algorithm - * pango-layout.c:pango_layout_line_reorder(). - */ - -static GList *reorder_items_recurse (GList *items, int n_items); - -/** - * pango_reorder_items: - * @items: (element-type Pango.Item): a `GList` of `PangoItem` - * in logical order. - * - * Reorder items from logical order to visual order. - * - * The visual order is determined from the associated directional - * levels of the items. The original list is unmodified. - * - * (Please open a bug if you use this function. - * It is not a particularly convenient interface, and the code - * is duplicated elsewhere in Pango for that reason.) - * - * Returns: (transfer full) (element-type Pango.Item): a `GList` - * of `PangoItem` structures in visual order. - */ -GList * -pango_reorder_items (GList *items) -{ - return reorder_items_recurse (items, g_list_length (items)); -} - -static GList * -reorder_items_recurse (GList *items, - int n_items) -{ - GList *tmp_list, *level_start_node; - int i, level_start_i; - int min_level = G_MAXINT; - GList *result = NULL; - - if (n_items == 0) - return NULL; - - tmp_list = items; - for (i=0; i<n_items; i++) - { - PangoItem *item = tmp_list->data; - - min_level = MIN (min_level, item->analysis.level); - - tmp_list = tmp_list->next; - } - - level_start_i = 0; - level_start_node = items; - tmp_list = items; - for (i=0; i<n_items; i++) - { - PangoItem *item = tmp_list->data; - - if (item->analysis.level == min_level) - { - if (min_level % 2) - { - if (i > level_start_i) - result = g_list_concat (reorder_items_recurse (level_start_node, i - level_start_i), result); - result = g_list_prepend (result, item); - } - else - { - if (i > level_start_i) - result = g_list_concat (result, reorder_items_recurse (level_start_node, i - level_start_i)); - result = g_list_append (result, item); - } - - level_start_i = i + 1; - level_start_node = tmp_list->next; - } - - tmp_list = tmp_list->next; - } - - if (min_level % 2) - { - if (i > level_start_i) - result = g_list_concat (reorder_items_recurse (level_start_node, i - level_start_i), result); - } - else - { - if (i > level_start_i) - result = g_list_concat (result, reorder_items_recurse (level_start_node, i - level_start_i)); - } - - return result; -} |