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/* ev-mapping.c
* this file is part of atril, a mate document viewer
*
* Copyright (C) 2009 Carlos Garcia Campos <carlosgc@gnome.org>
*
* Atril 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.
*
* Atril 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;
};
G_DEFINE_BOXED_TYPE (EvMappingList, ev_mapping_list, ev_mapping_list_ref, ev_mapping_list_unref)
/**
* ev_mapping_list_find:
* @mapping_list: an #EvMappingList
* @data: mapping data to find
*
* Returns: (transfer none): an #EvMapping
*/
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;
}
/**
* ev_mapping_list_find_custom:
* @mapping_list: an #EvMappingList
* @data: mapping data to find
* @func: (scope call): function to use for equality check
*
* Returns: (transfer none): an #EvMapping
*/
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;
}
/**
* ev_mapping_list_nth:
* @mapping_list: an #EvMappingList
* @n: the position to retrieve
*
* Returns: (transfer none): the #Evmapping at position @n in @mapping_list
*/
EvMapping *
ev_mapping_list_nth (EvMappingList *mapping_list,
guint n)
{
g_return_val_if_fail (mapping_list != NULL, NULL);
return (EvMapping *)g_list_nth_data (mapping_list->list, n);
}
/**
* ev_mapping_list_get_data:
* @mapping_list: an #EvMappingList
* @x: X coordinate
* @y: Y coordinate
*
* Returns: (transfer none): the data of a mapping in the list at coordinates (x, y)
*/
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;
}
/**
* ev_mapping_list_get_list:
* @mapping_list: an #EvMappingList
*
* Returns: (transfer none) (element-type EvMapping): the data for this mapping list
*/
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;
}
guint
ev_mapping_list_length (EvMappingList *mapping_list)
{
g_return_val_if_fail (mapping_list != NULL, 0);
return g_list_length (mapping_list->list);
}
/**
* ev_mapping_list_new:
* @page: page index for this mapping
* @list: (element-type EvMapping): a #GList of data for the page
* @data_destroy_func: function to free a list element
*
* Returns: an #EvMappingList
*/
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_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);
}
}
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