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/* draw.h */
/* Copyright 1995 by Steve Kirkendall */
typedef struct
{
long lineoffset; /* which line this row is for */
int insrows;
int shiftright;
int inschars;
} DRAWROW;
typedef struct
{
long start; /* offset from start of buffer to start of line */
int width; /* width of the line */
int startrow;/* where it appears on the screen */
} DRAWLINE;
typedef enum
{
DRAW_VISUAL, /* visual, no message or status msg */
DRAW_VMSG, /* visual, non-status message */
DRAW_OPENEDIT, /* open, editing a line */
DRAW_OPENOUTPUT /* open, after outputing a message */
} DRAWSTATE;
typedef enum
{
DRAW_NORMAL, /* optimizable, refreshable, cursor on screen */
DRAW_CHANGED, /* non-optimizable, refreshable, cursor on screen */
DRAW_CENTER, /* non-optimizable, refreshable, cursor in top half */
DRAW_SCRATCH /* non-optimizable, non-refreshable, cursor on screen */
} DRAWLOGIC;
typedef struct
{
DRAWSTATE drawstate; /* drawing state */
DRAWROW *newrow; /* info about new rows */
DRAWLINE *newline; /* info about new lines */
DRAWLINE *curline; /* info about current lines */
CHAR *newchar; /* characters of new image */
char *newfont; /* fonts of new image */
CHAR *curchar; /* characters of current image */
char *curfont; /* fonts of current image */
long *offsets; /* buffer offsets of each individual cell */
long topline; /* offset of first line drawn */
long bottomline; /* offset of line after last drawn */
BUFFER curbuf; /* current buffer */
long curnbytes; /* size of buffer when current image drawn */
long curchgs; /* buffer's "changes" counter when image drawn */
int rows, columns; /* dimensions of screen */
int cursrow, curscol;/* position of cursor */
int skipped; /* number of columns skipped from first line */
int nlines; /* number of lines */
DRAWLOGIC logic; /* ignore current image? */
BOOLEAN newmsg; /* does msg row contain anything important? */
MARK openline; /* current line (open mode only) */
CHAR *openimage; /* image of current line, '\0'-terminated */
long opencursor; /* where cursor is within line */
long opencnt; /* width of line in openimage */
int opencell; /* tty simulator's cursor position */
} DRAWINFO;
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