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/* "@(#)curshdr.h	1.1"	(1.16	3/16/83)	*/

/*LINTLIBRARY*/

/*
 * IC and IL overheads and costs should be set to this
 * value if the corresponding feature is missing
 */
#define INFINITY 500

struct line
{
	int     hash;		/* hash value for this line, 0 if not known */
	struct line *next;	/* pointer to the next line in list of lines */
	short   bodylen;	/* the cost of redrawing this line */
	short   length;		/* the number of valid characters in line */
	chtype  *body;		/* the actual text of the line */
};

struct costs {
	short Cursor_address;
	short Cursor_home;
	short Carriage_return;
	short Tab;
	short Back_tab;
	short Cursor_left;
	short Cursor_right;	/* current cost, which is 1 unless in insert
				 * mode, since you can just output the
				 * character you want to move over */
	short Right_base;	/* actual cost to do cursor_right */
	short Cursor_down;
	short Cursor_up;
	short Parm_left_cursor;
	short Parm_right_cursor;
	short Parm_up_cursor;
	short Parm_down_cursor;
	short Column_address;
	short Row_address;
	unsigned ilvar;		/* Insert line varying part * 32 */
	int   ilfixed;		/* Insert line fixed overhead */
	unsigned dlvar;		/* Delete line varying part * 32 */
	int   dlfixed;		/* Delete line fixed overhead */
	unsigned icvar;		/* Insert char varying part * 32 */
	int   icfixed;		/* Insert char fixed overhead */
	unsigned dcvar;		/* Delete char varying part * 32 */
	int   dcfixed;		/* Delete char fixed overhead */
	/* Should have costs for delete char/delete line here too. */
};
#define _cost(field) (SP->term_costs.field)

struct map {
	char label[16];		/* Text the key is labelled with */
	char sends[16];		/* Characters sent when key is pressed */
	short keynum;		/* "char" we pass back to program */
};

struct screen {
	unsigned fl_nonl	: 1;	/* we shouldn't output \n */
	unsigned fl_uppercase	: 1;	/* upper case terminal */
	unsigned fl_normtty	: 1;	/* currently in normal tty mode */
	unsigned fl_my_term	: 1;	/* user names his terminal type */
	unsigned fl_echoit	: 1;	/* in software echo mode */
	unsigned fl_rawmode	: 1;	/* in raw or cbreak mode */
	unsigned fl_endwin	: 1;	/* has called endwin */
	unsigned phys_irm	: 1;	/* physically in insert char mode */
	unsigned virt_irm	: 1;	/* want to be in insert char mode */
	unsigned fl_nodelay	: 1;	/* tty is in nodelay mode */
	struct line **cur_body;	/* physical screen image */
	struct line **std_body;	/* desired screen image */
	struct line *freelist;	/* free space list */
	short phys_x;		/* physical cursor X position */
	short phys_y;		/* physical cursor Y position */
	short virt_x;		/* virtual cursor X position */
	short virt_y;		/* virtual cursor Y position */
	short phys_top_mgn;	/* physical top margin of scrolling region */
	short phys_bot_mgn;	/* physical bottom margin of scrolling region */
	short des_top_mgn;	/* desired top margin of scrolling region */
	short des_bot_mgn;	/* desired bottom margin of scrolling region */
	chtype *curptr;		/* pointer to cursor */
	chtype virt_gr;		/* desired highlight state */
	chtype phys_gr;		/* current highlight state */
	short winsize;		/* no. of lines on which ID operations done */
	short doclear;		/* flag to say whether screen garbaged */
	short baud;		/* baud rate of this tty */
	short check_input;	/* flag for input check */
	short check_fd;		/* file descriptor for input check */
	struct _win_st *std_scr;/* primary output screen */
	struct _win_st *cur_scr;/* what's physically on the screen */
	struct term *tcap;	/* TERMCAP strings and storage space */
	struct costs term_costs;/* costs of various capabilities */
	short kp_state;		/* 1 iff keypad is on, else 0 */
	short ml_above;		/* # memory lines above top of screen */
#ifndef 	NONSTANDARD
	SGTTY	save_tty_buf;	/* current state of this tty */
	FILE *term_file;	/* File to write on for output. */
#endif		NONSTANDARD
#ifdef		KEYPAD
	struct map *kp;		/* keypad map */
#endif		KEYPAD
	short *input_queue;	/* a place to put stuff ungetc'ed */
	FILE *input_file;	/* Where to get keyboard input */
};

#ifndef 	NONSTANDARD
extern struct screen *SP;
#endif

#ifdef DEBUG
extern	FILE	*outf;
#endif

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