/* Copyright (c) 1983 University of Maryland Computer Science Department */

/* This structure holds everything needed to do cursor motion except the pad
   character (PC) and the output speed of the terminal (ospeed), which
   termcap wants in global variables. */

struct cm {
	/* Cursor position */
	int	cm_curY,	/* current row */
		cm_curX;	/* current column */
	/* Capabilities from termcap(5) (including extensions) */
	char	*cm_up,		/* up (up) */
		*cm_down,	/* down (do) */
		*cm_left,	/* left (bs) */
		*cm_right,	/* right (nd) */
		*cm_home,	/* home (ho) */
		*cm_cr,		/* carriage return (cr) */
		*cm_ll,		/* last line (ll) */
		*cm_abs,	/* absolute (cm) */
		*cm_habs,	/* horizontal absolute (ch) */
		*cm_vabs,	/* vertical absolute (cv) */
		*cm_ds,		/* "don't send" string (ds) */
		*cm_tab;	/* tab (ta) */
	int	cm_tabwidth,	/* tab width (tw) */
		cm_cols,	/* Number of cols on screen (co) */
		cm_rows,	/* Number of rows on screen (li) */
		cm_autowrap:1,	/* autowrap flag (am) */
		cm_magicwrap:1,	/* vt100s: cursor stays in last col but
				   will wrap if next char is printing (xn) */
		cm_usetabs:1,	/* if set, use tabs */
		cm_autolf:1;	/* \r performs a \r\n (rn) */
	/* Costs */
	int	cc_up,		/* cost for up */
		cc_down,	/* etc */
		cc_left,
		cc_right,
		cc_home,
		cc_cr,
		cc_ll,
		cc_abs,		/* abs costs are actually min costs */
		cc_habs,
		cc_vabs,
		cc_tab;
	/* Functions */
	int	(*cx_costinit) (),/* initialize cost factors */
		(*cx_goto) (),	/* (*cx_goto) (row, col) moves cursor to
				   specified coordinates (0 origin!!) */
		(*cx_pad) (),	/* (*cx_pad) (n, f) pads n * f msec (f
				   is type float!) */
		(*cx_put) ();	/* points to putc function (for tputs) */
} Wcm;

char	PC;			/* Pad character */
short	ospeed;			/* Output speed (from sg_ospeed) */

/* Shorthand */
#ifndef NoCMShortHand
#define	curY		Wcm.cm_curY
#define	curX		Wcm.cm_curX
#define	Up		Wcm.cm_up
#define	Down		Wcm.cm_down
#define	Left		Wcm.cm_left
#define	Right		Wcm.cm_right
#define	Home		Wcm.cm_home
#define	CR		Wcm.cm_cr
#define	LastLine	Wcm.cm_ll
#define	Tab		Wcm.cm_tab
#define	TabWidth	Wcm.cm_tabwidth
#define	DontSent	Wcm.cm_ds
#define	AbsPosition	Wcm.cm_abs
#define	ColPosition	Wcm.cm_habs
#define	RowPosition	Wcm.cm_vabs
#define	AutoWrap	Wcm.cm_autowrap
#define	MagicWrap	Wcm.cm_magicwrap
#define	UseTabs		Wcm.cm_usetabs
#define	AutoLF		Wcm.cm_autolf
#define	ScreenRows	Wcm.cm_rows
#define	ScreenCols	Wcm.cm_cols

#define	cmcostinit()	(*Wcm.cx_costinit) ()
#define	cmgoto(row,col)	(*Wcm.cx_goto) (row, col)
#define	cmat(row,col)	(curY = (row), curX = (col))
#define	cmplus(n)	{if ((curX += (n)) >= ScreenCols && !MagicWrap)\
				if (AutoWrap) curX = 0, curY++; else curX--;}
#define	cmpad(n,f)	(*Wcm.cx_pad) (n, f)
#define	cmputc		Wcm.cx_put
#endif