gimp/libgimp/gimp.h

/* LIBGIMP - The GIMP Library
 * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
 *
 * gimp.h
 *
 * 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 2 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, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef __GIMP_H__
#define __GIMP_H__

#include <glib.h>

#include <libgimpcolor/gimpcolor.h>
#include <libgimpmath/gimpmath.h>
#include <libgimpbase/gimpbase.h>

#include <libgimp/gimpenums.h>
#include <libgimp/gimptypes.h>

#include <libgimp/gimpchannel.h>
#include <libgimp/gimpdrawable.h>
#include <libgimp/gimpimage.h>
#include <libgimp/gimplayer.h>
#include <libgimp/gimpmisc.h>
#include <libgimp/gimppixelrgn.h>
#include <libgimp/gimpproceduraldb.h>
#include <libgimp/gimpselection.h>
#include <libgimp/gimptile.h>

#include <libgimp/gimp_pdb.h>

#ifdef G_OS_WIN32
#  include <stdlib.h>		/* For __argc and __argv */
#  ifdef LIBGIMP_COMPILATION
#    define GIMPVAR __declspec(dllexport)
#  else  /* !LIBGIMP_COMPILATION */
#    define GIMPVAR extern __declspec(dllimport)
#  endif /* !LIBGIMP_COMPILATION */
#else  /* !G_OS_WIN32 */
#  define GIMPVAR extern
#endif

G_BEGIN_DECLS


#define gimp_get_data         gimp_procedural_db_get_data
#define gimp_get_data_size    gimp_procedural_db_get_data_size
#define gimp_set_data         gimp_procedural_db_set_data


GIMPVAR guint gimp_major_version;
GIMPVAR guint gimp_minor_version;
GIMPVAR guint gimp_micro_version;

GIMPVAR GIOChannel *_readchannel;

typedef void (* GimpInitProc)  (void);
typedef void (* GimpQuitProc)  (void);
typedef void (* GimpQueryProc) (void);
typedef void (* GimpRunProc)   (gchar      *name,
				gint        nparams,
				GimpParam  *param,
				gint       *nreturn_vals,
				GimpParam **return_vals);


struct _GimpPlugInInfo
{
  /* called when the gimp application initially starts up */
  GimpInitProc  init_proc;

  /* called when the gimp application exits */
  GimpQuitProc  quit_proc;

  /* called by the gimp so that the plug-in can inform the
   *  gimp of what it does. (ie. installing a procedure database
   *  procedure).
   */
  GimpQueryProc query_proc;

  /* called to run a procedure the plug-in installed in the
   *  procedure database.
   */
  GimpRunProc   run_proc;
};

struct _GimpParamDef
{
  GimpPDBArgType  type;
  gchar          *name;
  gchar          *description;
};

struct _GimpParamRegion
{
  gint32 x;
  gint32 y;
  gint32 width;
  gint32 height;
};

union _GimpParamData
{
  gint32            d_int32;
  gint16            d_int16;
  gint8             d_int8;
  gdouble           d_float;
  gchar            *d_string;
  gint32           *d_int32array;
  gint16           *d_int16array;
  gint8            *d_int8array;
  gdouble          *d_floatarray;
  gchar           **d_stringarray;
  GimpRGB           d_color;
  GimpParamRegion   d_region;
  gint32            d_display;
  gint32            d_image;
  gint32            d_layer;
  gint32            d_layer_mask;
  gint32            d_channel;
  gint32            d_drawable;
  gint32            d_selection;
  gint32            d_boundary;
  gint32            d_path;
  gint32            d_unit;
  GimpParasite      d_parasite;
  gint32            d_tattoo;
  GimpPDBStatusType d_status;
};

struct _GimpParam
{
  GimpPDBArgType type;
  GimpParamData  data;
};



/**
 * MAIN():
 *
 * A macro that expands to the appropriate main() function for the
 * platform being compiled for.
 *
 * To use this macro, simply place a line that contains just the code
 * MAIN() at the toplevel of your file.  No semicolon should be used. 
 *
 */

#ifdef G_OS_WIN32

void set_gimp_PLUG_IN_INFO_PTR(GimpPlugInInfo *);

/* Define WinMain() because plug-ins are built as GUI applications. Also
 * define a main() in case some plug-in still is built as a console
 * application.
 */
#  ifdef __GNUC__
#    ifndef _stdcall
#      define _stdcall __attribute__((stdcall))
#    endif
#  endif

#  define MAIN()			\
   static int				\
   win32_gimp_main (int argc, char **argv)	\
   {					\
     set_gimp_PLUG_IN_INFO_PTR(&PLUG_IN_INFO);	\
     return gimp_main (argc, argv);	\
   }					\
					\
   struct HINSTANCE__;			\
   int _stdcall				\
   WinMain (struct HINSTANCE__ *hInstance, \
	    struct HINSTANCE__ *hPrevInstance,	\
	    char *lpszCmdLine,		\
	    int   nCmdShow)		\
   {					\
     return win32_gimp_main (__argc, __argv);	\
   }					\
					\
   int					\
   main (int argc, char *argv[])	\
   {					\
     return win32_gimp_main (argc, argv);	\
   }
#else
#ifndef __EMX__
#  define MAIN()			\
   int					\
   main (int argc, char *argv[])	\
   {					\
     return gimp_main (argc, argv);	\
   }
#else
#  define MAIN()				\
   int						\
   main (int argc, char *argv[])		\
   {						\
     set_gimp_PLUG_IN_INFO(&PLUG_IN_INFO);	\
     return gimp_main (argc, argv);		\
   }
#endif
#endif


/* The main procedure that should be called with the
 *  'argc' and 'argv' that are passed to "main".
 */
gint        gimp_main                (gint      argc,
				      gchar    *argv[]);

/* Forcefully causes the gimp library to exit and
 *  close down its connection to main gimp application.
 */
void G_GNUC_NORETURN gimp_quit       (void);

/* Returns the default gdisplay (given at plug-in config time).
 */
gint32      gimp_default_display     (void);


/* Install a procedure in the procedure database.
 */
void        gimp_install_procedure   (gchar        *name,
				      gchar        *blurb,
				      gchar        *help,
				      gchar        *author,
				      gchar        *copyright,
				      gchar        *date,
				      gchar        *menu_path,
				      gchar        *image_types,
				      gint          type,
				      gint          nparams,
				      gint          nreturn_vals,
				      GimpParamDef *params,
				      GimpParamDef *return_vals);

/* Install a temporary procedure in the procedure database.
 */
void        gimp_install_temp_proc   (gchar        *name,
				      gchar        *blurb,
				      gchar        *help,
				      gchar        *author,
				      gchar        *copyright,
				      gchar        *date,
				      gchar        *menu_path,
				      gchar        *image_types,
				      gint          type,
				      gint          nparams,
				      gint          nreturn_vals,
				      GimpParamDef *params,
				      GimpParamDef *return_vals,
				      GimpRunProc   run_proc);

/* Uninstall a temporary procedure
 */
void        gimp_uninstall_temp_proc (gchar        *name);

/* Run a procedure in the procedure database. The parameters are
 *  specified via the variable length argument list. The return
 *  values are returned in the 'GimpParam*' array.
 */
GimpParam * gimp_run_procedure       (gchar     *name,
				      gint      *nreturn_vals,
				      ...);

/* Run a procedure in the procedure database. The parameters are
 *  specified as an array of GimpParam.  The return
 *  values are returned in the 'GimpParam*' array.
 */
GimpParam * gimp_run_procedure2      (gchar     *name,
				      gint      *nreturn_vals,
				      gint       nparams,
				      GimpParam *params);

/* Destroy the an array of parameters. This is useful for
 *  destroying the return values returned by a call to
 *  'gimp_run_procedure'.
 */
void        gimp_destroy_params      (GimpParam    *params,
				      gint          nparams);

/* Destroy the an array of GimpParamDef's. This is useful for
 *  destroying the return values returned by a call to
 *  'gimp_query_procedure'.
 */
void        gimp_destroy_paramdefs   (GimpParamDef *paramdefs,
				      gint          nparams);

gdouble     gimp_gamma               (void);
gboolean    gimp_install_cmap        (void);
gint        gimp_min_colors          (void);

gchar     * gimp_get_progname        (void);

void        gimp_attach_new_parasite (const gchar    *name,
				      gint            flags,
				      gint            size,
				      const gpointer  data);


G_END_DECLS

#endif /* __GIMP_H__ */