1 files changed, 146 insertions, 0 deletions
diff --git a/libdocument/ev-mapping-list.c b/libdocument/ev-mapping-list.c
new file mode 100644
index 0000000..024cb49
--- /dev/null
+++ b/libdocument/ev-mapping-list.c
@@ -0,0 +1,146 @@
+/* ev-mapping.c
+ *  this file is part of evince, a gnome document viewer
+ *
+ * Copyright (C) 2009 Carlos Garcia Campos <carlosgc@gnome.org>
+ *
+ * Evince is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Evince 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "ev-mapping-list.h"
+
+struct _EvMappingList {
+	guint          page;
+	GList         *list;
+	GDestroyNotify data_destroy_func;
+	volatile gint  ref_count;
+};
+
+EvMapping *
+ev_mapping_list_find (EvMappingList *mapping_list,
+		      gconstpointer  data)
+{
+	GList *list;
+
+	for (list = mapping_list->list; list; list = list->next) {
+		EvMapping *mapping = list->data;
+
+		if (mapping->data == data)
+			return mapping;
+	}
+
+	return NULL;
+}
+
+EvMapping *
+ev_mapping_list_find_custom (EvMappingList *mapping_list,
+			     gconstpointer  data,
+			     GCompareFunc   func)
+{
+	GList *list;
+
+	for (list = mapping_list->list; list; list = list->next) {
+		EvMapping *mapping = list->data;
+
+		if (!func (mapping->data, data))
+			return mapping;
+	}
+
+	return NULL;
+}
+
+gpointer
+ev_mapping_list_get_data (EvMappingList *mapping_list,
+			  gdouble        x,
+			  gdouble        y)
+{
+	GList *list;
+
+	for (list = mapping_list->list; list; list = list->next) {
+		EvMapping *mapping = list->data;
+
+		if ((x >= mapping->area.x1) &&
+		    (y >= mapping->area.y1) &&
+		    (x <= mapping->area.x2) &&
+		    (y <= mapping->area.y2)) {
+			return mapping->data;
+		}
+	}
+
+	return NULL;
+}
+
+GList *
+ev_mapping_list_get_list (EvMappingList *mapping_list)
+{
+	return mapping_list ? mapping_list->list : NULL;
+}
+
+guint
+ev_mapping_list_get_page (EvMappingList *mapping_list)
+{
+	return mapping_list->page;
+}
+
+EvMappingList *
+ev_mapping_list_new (guint          page,
+		     GList         *list,
+		     GDestroyNotify data_destroy_func)
+{
+	EvMappingList *mapping_list;
+
+	g_return_val_if_fail (data_destroy_func != NULL, NULL);
+
+	mapping_list = g_slice_new (EvMappingList);
+	mapping_list->page = page;
+	mapping_list->list = list;
+	mapping_list->data_destroy_func = data_destroy_func;
+	mapping_list->ref_count = 1;
+
+	return mapping_list;
+}
+
+EvMappingList *
+ev_mapping_list_ref (EvMappingList *mapping_list)
+{
+	g_return_val_if_fail (mapping_list != NULL, NULL);
+	g_return_val_if_fail (mapping_list->ref_count > 0, mapping_list);
+
+	g_atomic_int_add (&mapping_list->ref_count, 1);
+
+	return mapping_list;
+}
+
+static void
+mapping_list_free_foreach (EvMapping     *mapping,
+			   GDestroyNotify destroy_func)
+{
+	destroy_func (mapping->data);
+	g_free (mapping);
+}
+
+void
+ev_mapping_list_unref (EvMappingList *mapping_list)
+{
+	g_return_if_fail (mapping_list != NULL);
+	g_return_if_fail (mapping_list->ref_count > 0);
+
+	if (g_atomic_int_exchange_and_add (&mapping_list->ref_count, -1) - 1 == 0) {
+		g_list_foreach (mapping_list->list,
+				(GFunc)mapping_list_free_foreach,
+				mapping_list->data_destroy_func);
+		g_list_free (mapping_list->list);
+		g_slice_free (EvMappingList, mapping_list);
+	}
+}