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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpmodule.h
* (C) 1999 Austin Donnelly <austin@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_MODULE_H__
#define __GIMP_MODULE_H__
#include <gmodule.h>
#define __GIMP_MODULE_H_INSIDE__
#include <libgimpmodule/gimpmoduletypes.h>
#include <libgimpmodule/gimpmoduledb.h>
#undef __GIMP_MODULE_H_INSIDE__
G_BEGIN_DECLS
/**
* GIMP_MODULE_ABI_VERSION:
*
* The version of the module system's ABI. Modules put this value into
* #GimpModuleInfo's @abi_version field so the code loading the modules
* can check if it was compiled against the same module ABI the modules
* are compiled against.
*
* GIMP_MODULE_ABI_VERSION is incremented each time one of the
* following changes:
*
* - the libgimpmodule implementation (if the change affects modules).
*
* - one of the classes implemented by modules (currently #GimpColorDisplay,
* #GimpColorSelector and #GimpController).
**/
#define GIMP_MODULE_ABI_VERSION 0x0004
/**
* GimpModuleState:
* @GIMP_MODULE_STATE_ERROR: Missing gimp_module_register() function
* or other error.
* @GIMP_MODULE_STATE_LOADED: An instance of a type implemented by
* this module is allocated.
* @GIMP_MODULE_STATE_LOAD_FAILED: gimp_module_register() returned %FALSE.
* @GIMP_MODULE_STATE_NOT_LOADED: There are no instances allocated of
* types implemented by this module.
*
* The possible states a #GimpModule can be in.
**/
typedef enum
{
GIMP_MODULE_STATE_ERROR,
GIMP_MODULE_STATE_LOADED,
GIMP_MODULE_STATE_LOAD_FAILED,
GIMP_MODULE_STATE_NOT_LOADED
} GimpModuleState;
#define GIMP_MODULE_ERROR (gimp_module_error_quark ())
GQuark gimp_module_error_quark (void) G_GNUC_CONST;
/**
* GimpModuleError:
* @GIMP_MODULE_FAILED: Generic error condition
*
* Types of errors returned by modules
**/
typedef enum
{
GIMP_MODULE_FAILED
} GimpModuleError;
/**
* GimpModuleInfo:
* @abi_version: The #GIMP_MODULE_ABI_VERSION the module was compiled against.
* @purpose: The module's general purpose.
* @author: The module's author.
* @version: The module's version.
* @copyright: The module's copyright.
* @date: The module's release date.
*
* This structure contains information about a loadable module.
**/
struct _GimpModuleInfo
{
guint32 abi_version;
gchar *purpose;
gchar *author;
gchar *version;
gchar *copyright;
gchar *date;
};
/**
* GimpModuleQueryFunc:
* @module: The #GimpModule responsible for this loadable module.
* @Returns: The #GimpModuleInfo struct describing the module.
*
* The signature of the query function a loadable GIMP module must
* implement. In the module, the function must be called
* gimp_module_query().
*
* #GimpModule will copy the returned #GimpModuleInfo struct, so the
* module doesn't need to keep these values around (however in most
* cases the module will just return a pointer to a constant
* structure).
**/
typedef const GimpModuleInfo * (* GimpModuleQueryFunc) (GTypeModule *module);
/**
* GimpModuleRegisterFunc:
* @module: The #GimpModule responsible for this loadable module.
* @Returns: %TRUE on success, %FALSE otherwise.
*
* The signature of the register function a loadable GIMP module must
* implement. In the module, the function must be called
* gimp_module_register().
*
* When this function is called, the module should register all the types
* it implements with the passed @module.
**/
typedef gboolean (* GimpModuleRegisterFunc) (GTypeModule *module);
/* GimpModules have to implement these */
G_MODULE_EXPORT const GimpModuleInfo * gimp_module_query (GTypeModule *module);
G_MODULE_EXPORT gboolean gimp_module_register (GTypeModule *module);
#define GIMP_TYPE_MODULE (gimp_module_get_type ())
#define GIMP_MODULE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_MODULE, GimpModule))
#define GIMP_MODULE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_MODULE, GimpModuleClass))
#define GIMP_IS_MODULE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_MODULE))
#define GIMP_IS_MODULE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_MODULE))
#define GIMP_MODULE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_MODULE, GimpModuleClass))
typedef struct _GimpModuleClass GimpModuleClass;
/**
* GimpModule:
* @filename:
* @verbose:
* @state:
* @on_disk:
* @load_inhibit:
* @info:
* @last_module_error:
*
* #GimpModule is a generic mechanism to dynamically load modules into
* GIMP. It is a #GTypeModule subclass, implementing module loading
* using #GModule. #GimpModule does not know which functionality is
* implemented by the modules, it just provides a framework to get
* arbitrary #GType implementations loaded from disk.
**/
struct _GimpModule
{
GTypeModule parent_instance;
/*< public >*/
gchar *filename; /* path to the module */
gboolean verbose; /* verbose error reporting */
GimpModuleState state; /* what's happened to the module */
gboolean on_disk; /* TRUE if file still exists */
gboolean load_inhibit; /* user requests not to load at boot time */
/* stuff from now on may be NULL depending on the state the module is in */
/*< private >*/
GModule *module; /* handle on the module */
/*< public >*/
GimpModuleInfo *info; /* returned values from module_query */
gchar *last_module_error;
/*< private >*/
GimpModuleQueryFunc query_module;
GimpModuleRegisterFunc register_module;
};
struct _GimpModuleClass
{
GTypeModuleClass parent_class;
void (* modified) (GimpModule *module);
/* Padding for future expansion */
void (* _gimp_reserved1) (void);
void (* _gimp_reserved2) (void);
void (* _gimp_reserved3) (void);
void (* _gimp_reserved4) (void);
};
GType gimp_module_get_type (void) G_GNUC_CONST;
GimpModule * gimp_module_new (const gchar *filename,
gboolean load_inhibit,
gboolean verbose);
gboolean gimp_module_query_module (GimpModule *module);
void gimp_module_modified (GimpModule *module);
void gimp_module_set_load_inhibit (GimpModule *module,
gboolean load_inhibit);
const gchar * gimp_module_state_name (GimpModuleState state);
GIMP_DEPRECATED_FOR(g_type_module_register_enum)
GType gimp_module_register_enum (GTypeModule *module,
const gchar *name,
const GEnumValue *const_static_values);
/* GimpModuleInfo functions */
GimpModuleInfo * gimp_module_info_new (guint32 abi_version,
const gchar *purpose,
const gchar *author,
const gchar *version,
const gchar *copyright,
const gchar *date);
GimpModuleInfo * gimp_module_info_copy (const GimpModuleInfo *info);
void gimp_module_info_free (GimpModuleInfo *info);
G_END_DECLS
#endif /* __GIMP_MODULE_H__ */
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