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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpthumbnailprocedure.h
* Copyright (C) 2019 Michael Natterer <mitch@gimp.org>
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <https://www.gnu.org/licenses/>.
*/
#ifndef __GIMP_THUMBNAIL_PROCEDURE_H__
#define __GIMP_THUMBNAIL_PROCEDURE_H__
#include <libgimp/gimpprocedure.h>
G_BEGIN_DECLS
/* For information look into the C source or the html documentation */
/**
* GimpRunThumbnailFunc:
* @procedure: the #GimpProcedure that runs.
* @file: the #GFile to load the thumbnail from.
* @size: the requested thumbnail size.
* @config: the @procedure's remaining arguments.
* @run_data: (closure): the run_data given in gimp_thumbnail_procedure_new().
*
* The thumbnail function is run during the lifetime of the GIMP session,
* each time a plug-in thumbnail procedure is called.
*
* [class@ThumbnailProcedure] are always run non-interactively.
*
* On success, the returned array must contain:
* 1. a [class@Image]: this is the only mandatory return value. It should
* ideally be a simple image whose dimensions are closest to @size and meant
* to be displayed as a small static image.
* 2. (optional) the full image's width (not the thumbnail's image's), or 0 if
* unknown.
* 3. (optional) the full image's height, or 0 if unknown.
* 4. (optional) the [enum@ImageType] of the full image.
* 5. (optional) the number of layers in the full image.
*
* Returns: (transfer full): the @procedure's return values.
*
* Since: 3.0
**/
typedef GimpValueArray * (* GimpRunThumbnailFunc) (GimpProcedure *procedure,
GFile *file,
gint size,
GimpProcedureConfig *config,
gpointer run_data);
#define GIMP_TYPE_THUMBNAIL_PROCEDURE (gimp_thumbnail_procedure_get_type ())
G_DECLARE_FINAL_TYPE (GimpThumbnailProcedure, gimp_thumbnail_procedure, GIMP, THUMBNAIL_PROCEDURE, GimpProcedure)
GimpProcedure * gimp_thumbnail_procedure_new (GimpPlugIn *plug_in,
const gchar *name,
GimpPDBProcType proc_type,
GimpRunThumbnailFunc run_func,
gpointer run_data,
GDestroyNotify run_data_destroy);
G_END_DECLS
#endif /* __GIMP_THUMBNAIL_PROCEDURE_H__ */
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