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SCRNMACS.H
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1997-07-05
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/* +++Date last modified: 05-Jul-1997 */
/*
** Macros for managing direct video writes by Jerry Houston
**
** prototypes for SCROLL.C and VIDPORT.C functions added by Bob Stout
*/
#ifndef SCRNMACS__H
#define SCRNMACS__H
#include "sniptype.h"
#include "extkword.h"
#if !defined(COLORMODE)
#define COLORMODE ((*(char FAR *)0x0449L) != 7)
#define EXT_KBD (*(char FAR *)0x0496L & 16)
#define VIDPAGE (*((unsigned char far *)0x0462L))
#define ROWSIZE (*(int FAR *)0x044AL)
#define SCANLINES ((int)*(char FAR*)0x0461L)
#define SCRBUFF ((unsigned FAR *)((COLORMODE)?0xB8000000L:0xB0000000L))
#define SCREENSEG ((unsigned)((COLORMODE)?0xB800:0xB000))
#define SCRNBYTES (*(int FAR *)0x44CL)
#define SCRNPIXELS (SCRNBYTES >> 1)
#define SCREENCOLS (*(int FAR *)0x044AL)
#define SCREENROWS ((*(char FAR *)0x0484L) ? 1 + (*(char FAR *)0x0484L): 25)
#endif
/*
COLORMODE = true/false, are we using color?
EXT_KBD = true/false, extended keyboard in use?
VIDPAGE = current video page in use
SCANLINES = number of scan lines in a character.
SCRBUFF = returns B800:0000 if using color, B000:0000 if mono.
SCREENSEG = when you just need the segment portion.
SCRNBYTES = number of bytes required to save screen.
SCRNPIXELS = number of (2-byte) pixels required to save screen.
SCREENCOLS = number of columns, often 80.
SCREENROWS = number of rows, usually defaults to 25.
*/
/*
** video attributes
*/
#define BLINKING 0x87
#define REVERSE 0x70
#define REVBLINK 0xf0
#define NORMAL 0x07
#define HIGHLITE 0x0f
#define HIGHBLINK 0x8f
#define BLINKBIT 0x80 /* OR in to cause blink */
#define HILTBIT 0x08 /* OR in to cause highlight */
/*
** colors -- Use as is for foreground colors
** For background, shift left by 4 and OR with
** foreground and possible video attributes
*/
#define BLACK_ 0
#define BLUE_ 1
#define GREEN_ 2
#define CYAN_ 3
#define RED_ 4
#define MAGENTA_ 5
#define BROWN_ 6
#define WHITE_ 7
#define GRAY_ 8
#define LTBLUE_ 9
#define LTGREEN_ 10
#define LTCYAN_ 11
#define LTRED_ 12
#define LTMAGENTA_ 13
#define YELLOW_ 14
#define HIWHITE_ 15 /* hi-intensity white */
#define BG_(a) (((a) & 0x7f) << 4)
/*
** e.g. blue background with yellow characters
**
** video_attribute = BG_(BLUE_)+YELLOW_
*/
/*
** File: SCROLL.C
*/
#define SCROLL_UP 0
#define SCROLL_DN 1
void scroll(int direction,
int num_lines,
int vattrib,
int ulrow,
int ulcomumn,
int lrrow,
int lrcolumn);
/*
** File: VIDPORT.C
*/
void GotoXY(int col, int row);
void ClrScrn(int vattrib);
void GetCurPos(int *col, int *row);
int GetCurAtr(void);
void ClrEol(void);
void ClrEop(void);
void Repaint(int vattrib);
/*
** File: SCNRSAVE.C
*/
struct SCREEN {
unsigned short *vbuf;
int curX,
curY;
};
struct SCREEN *SaveScrn(void);
void RestoreScrn(struct SCREEN *screen);
void FreeScrnBuf(struct SCREEN *screen);
/*
** File: FSCRNSAVE.C
*/
Boolean_T fSaveScrn(const char *fname);
Boolean_T fRestoreScrn(const char *fname);
/*
** File: ATR2ANSI.C
*/
char *make_ansi(int vatr);
#endif /* SCRNMACS__H */