/* $Id: plcore.h,v 1.6 2007/05/08 09:09:37 rice Exp $

	Contains declarations for core plplot data structures.  This file
	should be included only by plcore.c.

    Copyright (C) 2004  Andrew Roach
    Copyright (C) 2005  Thomas J. Duck

    This file is part of PLplot.

    PLplot is free software; you can redistribute it and/or modify
    it under the terms of the GNU Library General Public License as published
    by the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    PLplot 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 Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with PLplot; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

*/

#ifndef __PLCORE_H__
#define __PLCORE_H__

#include "plplotP.h"
#include "drivers.h"
#include "plDevs.h"
#include "disptab.h"

#ifdef ENABLE_DYNDRIVERS
#include <ltdl.h>
typedef lt_ptr (*PLDispatchInit)( PLDispatchTable *pdt );
#else
typedef void (*PLDispatchInit)( PLDispatchTable *pdt );
#endif

#ifdef HAVE_LIBUNICODE
#include <unicode.h>
#endif


/* Static function prototypes */

static const char *utf8_to_ucs4	(const char *ptr, PLUNICODE *unichar);
static void	grline		(short *, short *, PLINT);
static void	grpolyline	(short *, short *, PLINT);
static void	grfill		(short *, short *, PLINT);
static void	plSelectDev	(void);
static void	pldi_ini	(void);
static void	calc_diplt	(void);
static void	calc_didev	(void);
static void	calc_diori	(void);
static void	calc_dimap	(void);
static void	plgdevlst	(const char **, const char **, int *, int);

static void	plInitDispatchTable	(void);

static void	plLoadDriver	(void);

static void     sdifilt(short *myxscl, short *myyscl, PLINT npts,
			PLINT *clpxmi, PLINT *clpxma,
			PLINT *clpymi, PLINT *clpyma);

/* Static variables */

static PLINT xscl[PL_MAXPOLY], yscl[PL_MAXPOLY];

static PLINT initfont = 1;	/* initial font: extended by default */

static PLINT lib_initialized = 0;

/*--------------------------------------------------------------------------*\
 * Allocate a PLStream data structure (defined in plstrm.h).
 *
 * This struct contains a copy of every variable that is stream dependent.
 * Only the first [index=0] stream is statically allocated; the rest
 * are dynamically allocated when you switch streams (yes, it is legal
 * to only initialize the first element of the array of pointers).
\*--------------------------------------------------------------------------*/

static PLStream pls0;			/* preallocated stream */
static PLINT ipls;			/* current stream number */

static PLStream *pls[PL_NSTREAMS] = {&pls0};	/* Array of stream pointers */

/* Current stream pointer.  Global, for easier access to state info */

PLDLLIMPEXP_DATA(PLStream) *plsc = &pls0;

/* Only now can we include this */

#include "pldebug.h"

/*--------------------------------------------------------------------------*\
 * Initialize dispatch table.
 *
 * Each device is selected by the appropriate define, passed in from the
 * makefile.  When installing plplot you may wish to exclude devices not
 * present on your system in order to reduce screen clutter.
 *
 * If you hit a <CR> in response to the plinit() prompt, you get the FIRST
 * one active below, so arrange them accordingly for your system (i.e. all
 * the system-specific ones should go first, since they won't appear on
 * most systems.)
\*--------------------------------------------------------------------------*/

static PLDispatchTable **dispatch_table = 0;
static int npldrivers = 0;

static PLDispatchInit static_device_initializers[] = {
#ifdef PLD_mac
    plD_dispatch_init_mac8,
    plD_dispatch_init_mac1,
#endif
#ifdef PLD_next
    plD_dispatch_init_nx,
#endif
#ifdef PLD_os2pm
    plD_dispatch_init_os2,
#endif
#if defined(PLD_xwin) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_xw,
#endif
#if defined(PLD_gnome) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_gnome,
#endif
#if defined(PLD_gcw) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_gcw,
#endif
#if defined(PLD_tk) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_tk,
#endif
#if defined(PLD_linuxvga) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_vga,
#endif
#ifdef PLD_mgr
    plD_dispatch_init_mgr,
#endif
#ifdef PLD_win3
    plD_dispatch_init_win3,
#endif
#if defined (_MSC_VER) && defined (VGA)         /* graphics for msc */
    plD_dispatch_init_vga,
#endif
#ifdef PLD_bgi
    plD_dispatch_init_vga,
#endif
#ifdef PLD_gnusvga
    plD_dispatch_init_vga,
#endif
#ifdef PLD_tiff
    plD_dispatch_init_tiff,
#endif
#if defined(PLD_jpg)
    plD_dispatch_init_jpg,
#endif
#if defined(PLD_bmp)  && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_bmp,
#endif
#ifdef PLD_emxvga		       /* graphics for emx+gcc */
    plD_dispatch_init_vga,
#endif
#if defined(PLD_xterm) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_xterm,
#endif
#if defined(PLD_tek4010) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_tekt,
#endif
#if defined(PLD_tek4107) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_tek4107t,
#endif
#if defined(PLD_mskermit) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_mskermit,
#endif
#if defined(PLD_versaterm) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_versaterm,
#endif
#if defined(PLD_vlt) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_vlt,
#endif
#if defined(PLD_conex) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_conex,
#endif
#if defined(PLD_dg300) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_dg,
#endif
#if defined(PLD_plmeta) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_plm,
#endif
#if defined(PLD_tek4010f) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_tekf,
#endif
#if defined(PLD_tek4107f) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_tek4107f,
#endif
#if defined(PLD_ps) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_psm,
    plD_dispatch_init_psc,
#endif
#if defined(PLD_xfig) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_xfig,
#endif
#if defined(PLD_ljiip) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_ljiip,
#endif
#if defined(PLD_ljii) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_ljii,
#endif
#if defined( PLD_hp7470) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_hp7470,
#endif
#if defined( PLD_hp7580) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_hp7580,
#endif
#if defined( PLD_lj_hpgl) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_hpgl,
#endif
#if defined( PLD_imp) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_imp,
#endif
#if defined( PLD_pbm) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_pbm,
#endif
#if defined(PLD_png) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_png,
#endif
#if defined(PLD_jpeg) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_jpeg,
#endif
#if defined(PLD_gif) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_gif,
#endif
#if defined(PLD_pstex) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_pstex,
#endif
#if defined(PLD_ntk) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_ntk,
#endif
#if defined(PLD_cgm) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_cgm,
#endif
#if defined(PLD_mem) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_mem,
#endif
#if defined(PLD_null) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_null,
#endif
#if defined(PLD_tkwin) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_tkwin,
#endif
#if defined(PLD_wingcc) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_wingcc,
#endif
#if defined(PLD_aqt) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_aqt,
#endif
#if defined(PLD_wxwidgets) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_wxwidgets,
#endif
#if defined(PLD_svg) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_svg,
#endif
#if defined(PLD_pdf) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_pdf,
#endif
#if defined(PLD_psttf) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_psttfm,
    plD_dispatch_init_psttfc,
#endif
#if defined(PLD_data) && !defined(ENABLE_DYNDRIVERS)
    plD_dispatch_init_data,
#endif
    NULL
};

static int nplstaticdevices = ( sizeof(static_device_initializers) /
                                sizeof(PLDispatchInit) ) - 1;
static int npldynamicdevices = 0;

/*--------------------------------------------------------------------------*\
 * Stuff to support the loadable device drivers.
\*--------------------------------------------------------------------------*/

#ifdef ENABLE_DYNDRIVERS
typedef struct {
    char *devnam;
    char *description;
    char *drvnam;
    char *tag;
    int drvidx;
} PLLoadableDevice;

typedef struct {
    char *drvnam;
    lt_dlhandle dlhand;

} PLLoadableDriver;

static PLLoadableDevice *loadable_device_list;
static PLLoadableDriver *loadable_driver_list;

static int nloadabledrivers = 0;	/* pmr: dyndrivers only */
#endif


#endif	/* __PLCORE_H__ */