summaryrefslogtreecommitdiff
path: root/pango/reorder-items.c
diff options
context:
space:
mode:
Diffstat (limited to 'pango/reorder-items.c')
-rw-r--r--pango/reorder-items.c118
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;
-}