/* header file with various definitions
 */

/* this one should really be in stdio.h ...
 */

#ifndef NULL
#define NULL ((char *) 0)
#endif

#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif

/* constants
 */

#define ALTINDICATOR '\05'
#define MAXSCROLLED 8
#define WI_WITHSLD (SIZER|UPARROW|DNARROW|VSLIDE|LFARROW|RTARROW|HSLIDE)
#define WI_WITHTITLE (NAME|MOVER|CLOSER|FULLER)

#define MINMAX(x, y, z) ( x<y ? y : (x>z ? z :x) )

#define HASHBITS 9		/* number of bits of hash for character lookup*/

#define FM_INVERT 12			/* logic parameter to copy_fm */
#define FM_COPY   3			/* copy source to dest */
#define FM_CLEAR  0			/* zero dest */

#define X0 1			/* X border in bits around text in window */
#define Y0 1			/* Y border in bits around text in window */

/* emulation FSM states
 */

#define S_NORMAL	0
#define S_ESC		1
#define S_ESC1		2
#define S_ESC3		4
#define S_STATUS	5
#define S_NOP		6
#define S_FG		7
#define S_BG		8

#define min(a,b) ( a < b ? a : b )
#define max(a,b) ( a > b ? a : b )
/* data types used
 */

typedef struct mfdb {
  short *ptr;			/* ptr to memory holding the image */
  short wpix;			/* width in pixels */
  short hpix;			/* height in pixels */
  short wwords;			/* width in words */
  short format;			/* 0 for machine-dependent */
  short planes;			/* 1 for hires screen */
} WIN_MFDB;

/*
 * Fonts are all byte-wide, 16 bits high.  Not all of that is actually
 * used, necessarily: when narrower, the less-significant bits are used.
 * When shorter, the top rows are used.  The fonts from UW are 128 chars
 * long, which is a lose for non-USAians.  The built-up system fonts
 * are 256 chars long.
 */

typedef struct fnt {
  int inc_x, inc_y;		/* real size of one char */
  int nchars;			/* number of chars in this font */
  char f_data[4096];		/* character data */
} FNT;

typedef struct wi_str {
  struct wi_str *prev, *next;	/* list links */
  int fd;			/* the pipe */
  int pid;			/* the PID & PG of the process started here */
  int aes_handle;		/* the AES hande number */

  unsigned int	sliders:1,	/* sliders? */
  		titles:1,	/* title bar? */
  		fulled:1,	/* fulled */
  		inverse:1,	/* inverse mode on */
  		insmode:1,	/* insert mode on */
  		curstate:1,	/* state of the cursor */
		cursor_hidden:1,/* cursor enabled? (set w/ESCw and ESCv) */
		discard:1;	/* wrap vs discard at last column */
  int fgbg[2];			/* text bg and fg (last arg to vrt_cpyfm) */
  int slotno;			/* shrunk slot number in the dock */
  int x, y, w, h;		/* work area on screen */
  int save_x, save_y;		/* saved cursor location for ESC j/k */
  int px, py, pw, ph;		/* previous location of entire window */
  int x_off, y_off;		/* offset for visible part */
  int px_off, py_off;		/* previous offset */
  int m_off;			/* memory offset */
  int wi_w, wi_h;		/* max w,h */
  int cur_x, cur_y;		/* current cursor position */
  int top_y;			/* position of top of circular window buffer */
  int state;			/* state for the emulation FSM */
  short vspos, vssiz;		/* pos & size of vertical slider */
  short hspos, hssiz;		/* ditto horiz (saves unnec. redraws) */
  FNT *font;			/* the font in use */
  WIN_MFDB wi_mf;		/* memory form for this window */
  char name[80];		/* name of this window */
  char nuname[80];		/* new name under construction */
  int nuptr;			/* curr. len of new name */
  int x_chrs, y_chrs;		/* size of terminal emulation */
  int wi_style;			/* style of window (see WI_*SLD) */
  int wi_mainstyle;		/* the style requested originally */
} WI_STR;

#ifdef __GNUC__
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <memory.h>
#include "proto.h"
#endif /* __GNUC__ */