/****
 *
 * Copyright (c) 1989 by Sun Microsystems, Inc.
 * @(#)sh_win_grab.h 22.1 89/08/10 Copyright 1989 Sun Micro
 *
 * WIN_GRAB.H Window Grabber
 *
 ****/

#ifndef	_WGRAB

#include <sys/types.h>
#include "di/shapes.h"
#include "di/sh_SCR.h"
#include "di/sh_SHAPE.h"
#include "sh_CTX.h"
#include "sh_RAS.h"
#include "sh_PATH.h"
#include "sh_TRANS.h"
#include "sh_CMAP.h"
#include "sh_scr_dev.h"
#include "sh_point.h"

#ifdef	WINDOWGRABBER
struct	wg_winfo	{
	Unsgn32	w_flag;		/* must be first in struct */
	long	w_magic;
	long	w_version;
	struct	wg_winfo	
			*w_list;

	/* server info */
	int	w_sinfofd;
	int	w_sdevfd;
	Unsgn32	*w_slockp;
	int	w_srefcnt;

	/* client info */
	char	w_devname[20];
	int	w_cinfofd;
	int	w_cdevfd;
	int	w_crefcnt;

	Unsgn32	w_cookie;

	Unsgn32	w_filesuffix;
	Unsgn32	*w_clockp;

	/* clipping info */
	ENTRY	*w_clipoff;
	u_int	w_clipsize;

	/* shapes stuff */
	POINT_B2D w_org;
	POINT_B2D w_dim;

	/* produces w_shape_hdr and w_shape */
	Static_Obj(w_shape,struct class_SHAPE);
	ENTRY	w_cliparray;
};
typedef	struct	wg_winfo WGINFO;

#define WG_PAGESZ       (8*1024)
#define	WGINFO_OFF	(2*WG_PAGESZ)
#define WG_LOCK(x)      (*(int *)(x)) = 1
#define WG_UNLOCK(x)    (*(int *)((x)+(WG_PAGESZ/sizeof(int)))) = 0

extern	Unsgn32	*sh_wg_dummy;

#define wg_init()		sh_wg_init()

#define	wg_get_grab(ras)	sh_wg_get_grab(ras)

#ifdef SH_USER

#define	wg_initras(ras)			\
	((ras)->ras_lock = sh_wg_dummy,	\
	 (ras)->ras_infop = sh_wg_dummy+WGINFO_OFF/sizeof(Unsgn32))
#define	wg_lock(ras)			\
    do {				\
    if ((((WGINFO*)((ras)->ras_infop))->w_crefcnt)++ == 0) { \
	WG_LOCK((ras)->ras_lock);		\
        if (*(Unsgn32 *)(ras)->ras_infop) \
	    sh_wg_get_clip(ras);	\
    }					\
    } while (0)
#define wg_unlock(ras)			\
    do {				\
    if (--(((WGINFO*)((ras)->ras_infop))->w_crefcnt) == 0)	\
	WG_UNLOCK((ras)->ras_lock);	\
    } while (0)

#define	wg_set_grab(ras,val)	sh_wg_set_grab_usr(ras,val)
#define	wg_set_clip(ras)

#define wg_raster_exists	0

#else	/* SH_USER (System) */

#define	wg_initras(ras)		\
	(ras)->ras_lock = sh_wg_dummy
#define	wg_lock(ras)			\
    do {				\
    if (((WGINFO *)(ras->ras_lock+WGINFO_OFF/sizeof(Unsgn32)))->w_srefcnt++ == 0)\
	WG_LOCK(ras->ras_lock);		\
    } while (0)
#define wg_unlock(ras)			\
    do {				\
    if (--((WGINFO *)(ras->ras_lock+WGINFO_OFF/sizeof(Unsgn32)))->w_srefcnt == 0)\
	WG_UNLOCK(ras->ras_lock);	\
    } while (0)
#define wg_set_grab(ras,val)	sh_wg_set_grab_sys(ras,val)
#define wg_set_clip(ras)		\
    do {				\
    if (ras->ras_lock != sh_wg_dummy)	\
	sh_wg_set_clip(ras);		\
    } while (0)
#define	wg_lockall(ras)		sh_wg_lockall(ras)
#define	wg_unlockall(ras)	sh_wg_unlockall(ras)

extern	Sgn8	*sh_wg_wlist;
#define wg_raster_exists	sh_wg_wlist

#endif  /* SH_USER */

#else	/* WINDOWGRABBER */

#define wg_init()
#define	wg_initras(r)
#define	wg_set_clip(r)
#define	wg_lock(r)
#define	wg_unlock(r)
#define	wg_get_grab(r)
#define	wg_set_grab(r,v)
#define	wg_lockall(r)
#define	wg_unlockall(r)

#define wg_raster_exists	0

#endif	/* WINDOWGRABBER */

#define	_WGRAB
#endif	/* _WGRAB */