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OS/2 Shareware BBS: 2 BBS
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BTMTSRC3.ZIP
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SB_SHOW.C
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C/C++ Source or Header
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1990-05-14
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6KB
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163 lines
/*--------------------------------------------------------------------------*/
/* */
/* */
/* ------------ Bit-Bucket Software, Co. */
/* \ 10001101 / Writers and Distributors of */
/* \ 011110 / Freely Available<tm> Software. */
/* \ 1011 / */
/* ------ */
/* */
/* (C) Copyright 1987-90, Bit Bucket Software Co., a Delaware Corporation. */
/* */
/* */
/* Routines for updating the screen within BinkleyTerm */
/* */
/* */
/* For complete details of the licensing restrictions, please refer */
/* to the License agreement, which is published in its entirety in */
/* the MAKEFILE and BT.C, and also contained in the file LICENSE.240. */
/* */
/* USE OF THIS FILE IS SUBJECT TO THE RESTRICTIONS CONTAINED IN THE */
/* BINKLEYTERM LICENSING AGREEMENT. IF YOU DO NOT FIND THE TEXT OF */
/* THIS AGREEMENT IN ANY OF THE AFOREMENTIONED FILES, OR IF YOU DO */
/* NOT HAVE THESE FILES, YOU SHOULD IMMEDIATELY CONTACT BIT BUCKET */
/* SOFTWARE CO. AT ONE OF THE ADDRESSES LISTED BELOW. IN NO EVENT */
/* SHOULD YOU PROCEED TO USE THIS FILE WITHOUT HAVING ACCEPTED THE */
/* TERMS OF THE BINKLEYTERM LICENSING AGREEMENT, OR SUCH OTHER */
/* AGREEMENT AS YOU ARE ABLE TO REACH WITH BIT BUCKET SOFTWARE, CO. */
/* */
/* */
/* You can contact Bit Bucket Software Co. at any one of the following */
/* addresses: */
/* */
/* Bit Bucket Software Co. FidoNet 1:104/501, 1:132/491, 1:141/491 */
/* P.O. Box 460398 AlterNet 7:491/0 */
/* Aurora, CO 80046 BBS-Net 86:2030/1 */
/* Internet f491.n132.z1.fidonet.org */
/* */
/* Please feel free to contact us at any time to share your comments about */
/* our software and/or licensing policies. */
/* */
/* */
/* This module is derived from code developed by Augie Hansen in his */
/* book "Proficient C" published by Microsoft Press. Mr. Hansen was */
/* kind enough to give us verbal permission to use his routines, and */
/* Bob, Vince and Alan (and all our full screen users) are grateful. */
/* If you decide to use this code in some package you are doing, give */
/* some thought to going out and buying the book. He deserves that. */
/* */
/*--------------------------------------------------------------------------*/
#include <stdio.h>
#include <dos.h>
#ifdef __TURBOC__
#include <mem.h>
#else
#include <memory.h>
#endif
#include "sbuf.h"
#include "xfer.h"
#include "com.h"
#include "zmodem.h"
#include "keybd.h"
#include "sched.h"
#include "externs.h"
#include "prototyp.h"
#include "vfossil.h"
extern BUFFER Sbuf;
extern CELLP Scrnbuf;
extern int cursor_col;
extern int cursor_row;
void sb_show ()
{
register int r;
unsigned int src_os;
unsigned int far *q;
if (screen_blank && do_screen_blank)
{
for (r = 0; r < SB_ROWS; r++)
{
q = (unsigned int far *) blanks;
#ifndef OS_2
(void) VioWrtCellStr (q, SB_COLS * 2, r, 0, 0);
#else
(void) VioWrtCellStr ((PCH) q, (USHORT) (SB_COLS * 2), (USHORT) r, (USHORT) 0, (HVIO) 0L);
#endif
}
sb_dirty ();
return;
}
/* Anything to do? */
if (!(Sbuf.flags & SB_DELTA))
{
return;
}
src_os = 0;
for (r = 0; r < SB_ROWS; r++)
{
/* Copy only changed portions of lines */
if ((Sbuf.lcol[r] < SB_COLS) && (Sbuf.rcol[r] > 0))
{
q = (unsigned int far *) (Scrnbuf + src_os + Sbuf.lcol[r]);
#ifndef OS_2
(void) VioWrtCellStr (q, (Sbuf.rcol[r] - Sbuf.lcol[r] + 1) * 2, r, Sbuf.lcol[r], 0);
#else
(void) VioWrtCellStr ((PCH) q, (USHORT) ((Sbuf.rcol[r] - Sbuf.lcol[r] + 1) * 2), (USHORT) r, (USHORT) Sbuf.lcol[r], (HVIO) 0L);
#endif
Sbuf.lcol[r] = SB_COLS;
Sbuf.rcol[r] = 0;
}
src_os += (unsigned) SB_COLS;
}
/* the display now matches the buffer -- clear flag bit */
Sbuf.flags &= ~SB_DELTA;
gotoxy (cursor_col, cursor_row);
return;
}
/*
* Just cleans up the structure to say it is reality - I can use this when
* I write directly to the screen for single char writes.
*/
void sb_clean ()
{
int r;
for (r = 0; r < SB_ROWS; r++)
{
Sbuf.lcol[r] = SB_COLS;
Sbuf.rcol[r] = 0;
}
Sbuf.flags &= ~SB_DELTA;
}
/*
* Make the entire buffer "dirty" so it will be updated.
*/
void sb_dirty ()
{
int r;
for (r = 0; r < SB_ROWS; r++)
{
Sbuf.lcol[r] = 0;
Sbuf.rcol[r] = SB_COLS - 1;
}
Sbuf.flags |= SB_DELTA;
}