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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __PLUG_IN_H__
#define __PLUG_IN_H__
#include "gtk/gtk.h"
#include "procedural_db.h"
#define WRITE_BUFFER_SIZE 512
#define RGB_IMAGE 0x01
#define GRAY_IMAGE 0x02
#define INDEXED_IMAGE 0x04
#define RGBA_IMAGE 0x08
#define GRAYA_IMAGE 0x10
#define INDEXEDA_IMAGE 0x20
typedef struct _PlugIn PlugIn;
typedef struct _PlugInDef PlugInDef;
typedef struct _PlugInProcDef PlugInProcDef;
struct _PlugIn
{
unsigned int open : 1; /* Is the plug-in open */
unsigned int destroy : 1; /* Should the plug-in by destroyed */
unsigned int query : 1; /* Are we querying the plug-in? */
unsigned int synchronous : 1; /* Is the plug-in running synchronously or not */
unsigned int recurse : 1; /* Have we called 'gtk_main' recursively? */
unsigned int busy : 1; /* Is the plug-in busy with a temp proc? */
pid_t pid; /* Plug-ins process id */
char *args[7]; /* Plug-ins command line arguments */
int my_read, my_write; /* Apps read and write file descriptors */
int his_read, his_write; /* Plug-ins read and write file descriptors */
guint32 input_id; /* Id of input proc */
char write_buffer[WRITE_BUFFER_SIZE]; /* Buffer for writing */
int write_buffer_index; /* Buffer index for writing */
GSList *temp_proc_defs; /* Temporary procedures */
GtkWidget *progress; /* Progress dialog */
GtkWidget *progress_label;
GtkWidget *progress_bar;
gpointer user_data; /* Handle for hanging data onto */
};
struct _PlugInDef
{
char *prog;
GSList *proc_defs;
time_t mtime;
int query;
};
struct _PlugInProcDef
{
char *prog;
char *menu_path;
char *accelerator;
char *extensions;
char *prefixes;
char *magics;
char *image_types;
int image_types_val;
ProcRecord db_info;
GSList *extensions_list;
GSList *prefixes_list;
GSList *magics_list;
};
/* Initialize the plug-ins */
void plug_in_init (void);
/* Kill all running plug-ins */
void plug_in_kill (void);
/* Add a plug-in to the list of valid plug-ins
* and query the plug-in for information if
* necessary.
*/
void plug_in_add (char *name,
char *menu_path,
char *accelerator);
/* Get the "image_types" the plug-in works on.
*/
char* plug_in_image_types (char *name);
/* Add in the file load/save handler fields procedure.
*/
PlugInProcDef* plug_in_file_handler (char *name,
char *extensions,
char *prefixes,
char *magics);
/* Add a plug-in definition.
*/
void plug_in_def_add (PlugInDef *plug_in_def);
/* Retrieve a plug-ins menu path
*/
char* plug_in_menu_path (char *name);
/* Create a new plug-in structure */
PlugIn* plug_in_new (char *name);
/* Destroy a plug-in structure. This will close the plug-in
* first if necessary.
*/
void plug_in_destroy (PlugIn *plug_in);
/* Open a plug-in. This cause the plug-in to run.
* If returns 1, you must destroy the plugin. If returns 0 you
* may not destroy the plugin.
*/
int plug_in_open (PlugIn *plug_in);
/* Close a plug-in. This kills the plug-in and releases
* its resources.
*/
void plug_in_close (PlugIn *plug_in,
int kill_it);
/* Run a plug-in as if it were a procedure database procedure */
Argument* plug_in_run (ProcRecord *proc_rec,
Argument *args,
int synchronous,
int destroy_values);
/* Run the last plug-in again with the same arguments. Extensions
* are exempt from this "privelege".
*/
void plug_in_repeat (int with_interface);
/* Set the sensitivity for plug-in menu items based on the image
* base type.
*/
void plug_in_set_menu_sensitivity (int base_type);
/* Register an internal plug-in. This is for file load-save
* handlers, which are organized around the plug-in data structure.
* This could all be done a little better, but oh well. -josh
*/
void plug_in_add_internal (PlugInProcDef* proc_def);
GSList* plug_in_extensions_parse (char *extensions);
int plug_in_image_types_parse (char *image_types);
#endif /* __PLUG_IN_H__ */
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