165 lines
4.3 KiB
C
165 lines
4.3 KiB
C
/* PIKA - Photo and Image Kooker Application
|
|
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
|
|
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
|
|
*
|
|
* Original copyright, applying to most contents (license remains unchanged):
|
|
* Copyright (C) 1995-2003 Spencer Kimball and Peter Mattis
|
|
*
|
|
* pika-filter-history.c
|
|
*
|
|
* This program 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 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include <gdk-pixbuf/gdk-pixbuf.h>
|
|
#include <gegl.h>
|
|
|
|
#include "libpikabase/pikabase.h"
|
|
|
|
#include "core-types.h"
|
|
|
|
#include "config/pikacoreconfig.h"
|
|
|
|
#include "pika.h"
|
|
#include "pika-filter-history.h"
|
|
|
|
#include "pdb/pikaprocedure.h"
|
|
|
|
|
|
/* local function prototypes */
|
|
|
|
static gint pika_filter_history_compare (PikaProcedure *proc1,
|
|
PikaProcedure *proc2);
|
|
|
|
|
|
/* public functions */
|
|
|
|
gint
|
|
pika_filter_history_size (Pika *pika)
|
|
{
|
|
g_return_val_if_fail (PIKA_IS_PIKA (pika), 0);
|
|
|
|
return MAX (1, pika->config->filter_history_size);
|
|
}
|
|
|
|
gint
|
|
pika_filter_history_length (Pika *pika)
|
|
{
|
|
g_return_val_if_fail (PIKA_IS_PIKA (pika), 0);
|
|
|
|
return g_list_length (pika->filter_history);
|
|
}
|
|
|
|
PikaProcedure *
|
|
pika_filter_history_nth (Pika *pika,
|
|
gint n)
|
|
{
|
|
g_return_val_if_fail (PIKA_IS_PIKA (pika), NULL);
|
|
|
|
return g_list_nth_data (pika->filter_history, n);
|
|
}
|
|
|
|
void
|
|
pika_filter_history_add (Pika *pika,
|
|
PikaProcedure *procedure)
|
|
{
|
|
GList *link;
|
|
|
|
g_return_if_fail (PIKA_IS_PIKA (pika));
|
|
g_return_if_fail (PIKA_IS_PROCEDURE (procedure));
|
|
|
|
/* return early if the procedure is already at the top */
|
|
if (pika->filter_history &&
|
|
pika_filter_history_compare (pika->filter_history->data, procedure) == 0)
|
|
return;
|
|
|
|
/* ref new first then unref old, they might be the same */
|
|
g_object_ref (procedure);
|
|
|
|
link = g_list_find_custom (pika->filter_history, procedure,
|
|
(GCompareFunc) pika_filter_history_compare);
|
|
|
|
if (link)
|
|
{
|
|
g_object_unref (link->data);
|
|
pika->filter_history = g_list_delete_link (pika->filter_history, link);
|
|
}
|
|
|
|
pika->filter_history = g_list_prepend (pika->filter_history, procedure);
|
|
|
|
link = g_list_nth (pika->filter_history, pika_filter_history_size (pika));
|
|
|
|
if (link)
|
|
{
|
|
g_object_unref (link->data);
|
|
pika->filter_history = g_list_delete_link (pika->filter_history, link);
|
|
}
|
|
|
|
pika_filter_history_changed (pika);
|
|
}
|
|
|
|
void
|
|
pika_filter_history_remove (Pika *pika,
|
|
PikaProcedure *procedure)
|
|
{
|
|
GList *link;
|
|
|
|
g_return_if_fail (PIKA_IS_PIKA (pika));
|
|
g_return_if_fail (PIKA_IS_PROCEDURE (procedure));
|
|
|
|
link = g_list_find_custom (pika->filter_history, procedure,
|
|
(GCompareFunc) pika_filter_history_compare);
|
|
|
|
if (link)
|
|
{
|
|
g_object_unref (link->data);
|
|
pika->filter_history = g_list_delete_link (pika->filter_history, link);
|
|
|
|
pika_filter_history_changed (pika);
|
|
}
|
|
}
|
|
|
|
void
|
|
pika_filter_history_clear (Pika *pika)
|
|
{
|
|
g_return_if_fail (PIKA_IS_PIKA (pika));
|
|
|
|
if (pika->filter_history)
|
|
{
|
|
g_list_free_full (pika->filter_history, (GDestroyNotify) g_object_unref);
|
|
pika->filter_history = NULL;
|
|
|
|
pika_filter_history_changed (pika);
|
|
}
|
|
}
|
|
|
|
|
|
/* private functions */
|
|
|
|
static gint
|
|
pika_filter_history_compare (PikaProcedure *proc1,
|
|
PikaProcedure *proc2)
|
|
{
|
|
/* the procedures can have the same name, but could still be two
|
|
* different filters using the same operation, so also compare
|
|
* their menu labels
|
|
*/
|
|
return (pika_procedure_name_compare (proc1, proc2) ||
|
|
strcmp (pika_procedure_get_menu_label (proc1),
|
|
pika_procedure_get_menu_label (proc2)));
|
|
}
|
