390 lines
10 KiB
C
390 lines
10 KiB
C
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* Video subsystem for ANSI terminals
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*
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* Copyright 2000 David G. Holm <dholm@jsd-llc.com>
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* www - http://www.harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version, with one exception:
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*
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* The exception is that if you link the Harbour Runtime Library (HRL)
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* and/or the Harbour Virtual Machine (HVM) with other files to produce
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* an executable, this does not by itself cause the resulting executable
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* to be covered by the GNU General Public License. Your use of that
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* executable is in no way restricted on account of linking the HRL
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* and/or HVM code into it.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
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* their web site at http://www.gnu.org/).
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*
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*/
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/*
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* This module is partially based on VIDMGR by Andrew Clarke and modified
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* for the Harbour project
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*/
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/* NOTE: User programs should never call this layer directly! */
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#if defined(__GNUC__) && ! defined(__MINGW32__)
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#include <unistd.h>
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#if defined(__DJGPP__) || defined(__CYGWIN__) || defined(HARBOUR_GCC_OS2)
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#include <io.h>
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#endif
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#else
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#include <io.h>
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#endif
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#include <ctype.h>
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#include <string.h>
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#include "hbapigt.h"
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#include "hbset.h"
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#include "inkey.ch"
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static USHORT s_usRow, s_usCol, s_usMaxRow, s_usMaxCol;
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static int s_iFilenoStdin, s_iFilenoStdout, s_iFilenoStderr;
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static int s_iAttribute;
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static BOOL s_bColor;
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static char s_szSpaces[] = " "; /* 84 spaces */
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static void hb_gt_AnsiGetCurPos( USHORT * row, USHORT * col );
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void hb_gt_Init( int iFilenoStdin, int iFilenoStdout, int iFilenoStderr )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_Init()"));
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s_iAttribute = 0;
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s_iFilenoStdin = iFilenoStdin;
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s_iFilenoStdout = iFilenoStdout;
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s_iFilenoStderr = iFilenoStderr;
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s_usRow = s_usCol = 0;
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hb_gt_AnsiGetCurPos( &s_usRow, &s_usCol );
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#ifdef OS_UNIX_COMPATIBLE
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s_usMaxRow = 23;
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s_bColor = FALSE;
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#else
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s_usMaxRow = 24;
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s_bColor = TRUE;
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#endif
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s_usMaxCol = 79;
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fprintf( stdout, "\x1B[=7h" ); /* Enable line wrap (for OUTSTD() and OUTERR()) */
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}
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void hb_gt_Done( void )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_Done()"));
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/* TODO: */
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}
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static void hb_gt_AnsiGetCurPos( USHORT * row, USHORT * col )
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{
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if( isatty( s_iFilenoStdin ) && isatty( s_iFilenoStdout ) )
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{
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USHORT ch, value = 0, index = 0;
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fprintf( stdout, "\x1B[6n" );
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do
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{
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ch = getc( stdin );
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if( isdigit( ch ) )
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{
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value = ( value * 10 ) + ( ch - '0' );
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}
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else if( ch == ';' )
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{
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*row = value - 1;
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value = 0;
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}
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}
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while( ch != 'R' && index < 10 );
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*col = value - 1;
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}
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}
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static void hb_gt_AnsiSetAttributes( BYTE attr )
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{
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static const int color[] = { 0, 4, 2, 6, 1, 5, 3, 7 };
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int bg_color = 40 + color[ ( attr & 0x70 ) >> 4 ];
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int fg_color = 30 + color[ attr & 0x07 ];
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int special = 0;
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if( attr & 0x08 ) special = 1;
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else if( attr & 0x80 )
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{
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if( hb_set.HB_SET_INTENSITY ) special = 1;
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else special = 5;
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}
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fprintf( stdout, "\x1B[%d;%d;%dm", special, fg_color, bg_color );
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}
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BOOL hb_gt_AdjustPos( BYTE * pStr, ULONG ulLen )
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{
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USHORT row = s_usRow;
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USHORT col = s_usCol;
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ULONG ulCount;
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_AdjustPos(%s, %lu)", pStr, ulLen ));
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for( ulCount = 0; ulCount < ulLen; ulCount++ )
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{
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switch( *pStr++ )
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{
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case HB_CHAR_BEL:
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break;
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case HB_CHAR_BS:
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if( col )
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col--;
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else
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{
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col = s_usMaxCol;
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if( row )
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row--;
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}
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break;
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case HB_CHAR_LF:
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if( row < s_usMaxRow )
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row++;
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break;
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case HB_CHAR_CR:
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col = 0;
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break;
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default:
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if( col < s_usMaxCol )
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col++;
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else
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{
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col = 0;
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if( row < s_usMaxRow )
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row++;
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}
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}
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}
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hb_gt_SetPos( row, col );
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return TRUE;
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}
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#ifdef HARBOUR_GCC_OS2
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#include "..\..\kbdos2.gcc"
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#else
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int hb_gt_ReadKey( HB_inkey_enum eventmask )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_ReadKey(%d)", (int) event_mask));
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HB_SYMBOL_UNUSED( eventmask );
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/* TODO: */
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return 0;
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}
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#endif
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BOOL hb_gt_IsColor( void )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_IsColor()"));
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/* TODO: */
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return s_bColor;
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}
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USHORT hb_gt_GetScreenWidth( void )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_GetScreenWidth()"));
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/* TODO: */
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return s_usMaxCol + 1;
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}
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USHORT hb_gt_GetScreenHeight( void )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_GetScreenHeight()"));
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/* TODO: */
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return s_usMaxRow + 1;
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}
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void hb_gt_SetPos( SHORT iRow, SHORT iCol )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_SetPos(%hd, %hd)", iRow, iCol));
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if( iRow < 0 ) iRow = 0;
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else if( iRow > s_usMaxRow ) iRow = s_usMaxRow;
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if( iCol < 0 ) iCol = 0;
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else if( iCol > s_usMaxCol ) iCol = s_usMaxCol;
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s_usRow = iRow;
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s_usCol = iCol;
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fprintf( stdout, "\x1B[%d;%dH", s_usRow + 1, s_usCol + 1 );
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}
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SHORT hb_gt_Row( void )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_Row()"));
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return s_usRow;
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}
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SHORT hb_gt_Col( void )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_Col()"));
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return s_usCol;
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}
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void hb_gt_Scroll( USHORT usTop, USHORT usLeft, USHORT usBottom, USHORT usRight, BYTE attr, SHORT sVert, SHORT sHoriz )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_Scroll(%hu, %hu, %hu, %hu, %d, %hd, %hd)", usTop, usLeft, usBottom, usRight, (int) attr, sVert, sHoriz));
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if( sVert == 0 && sHoriz == 0 )
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{
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/* Clear */
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if( usTop == 0 && usLeft == 0 && usBottom >= s_usMaxRow && usRight >= s_usMaxCol )
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{
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/* Clear the entire screen */
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fprintf( stdout, "\x1B[2J" );
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}
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else
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{
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/* Clear a screen region */
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USHORT i;
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for( i = usTop; i <= usBottom; i++ )
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{
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hb_gt_Puts( i, usLeft, s_iAttribute, ( BYTE * )s_szSpaces, (usRight - usLeft ) + 1 );
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}
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}
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}
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else
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{
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if( usTop == 0 && usLeft == 0 && usBottom >= s_usMaxRow && usRight >= s_usMaxCol )
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{
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if( sVert > 0 && sHoriz == 0 )
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{
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/* Scroll the entire screen up */
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fprintf( stdout, "\x1B[25;80" );
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while( sVert-- ) fputc( '\n', stdout );
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}
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else
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{
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/* TODO: Scroll the entire screen any direction other than up */
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}
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}
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else
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{
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/* TODO: Scroll a screen region */
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}
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}
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}
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USHORT hb_gt_GetCursorStyle( void )
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{
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/* TODO: What shape is the cursor? */
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USHORT uiStyle = 0;
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_GetCursorStyle()"));
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return uiStyle;
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}
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void hb_gt_SetCursorStyle( USHORT style )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_SetCursorStyle(%hu)", style));
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}
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void hb_gt_Puts( USHORT usRow, USHORT usCol, BYTE attr, BYTE * str, ULONG len )
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{
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/* Because Clipper strings don't have to be null terminated, add a null
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terminating character after saving what used to be at the termination
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position, because it might not even be part of the string object */
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char save = str[ len ];
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_Puts(%hu, %hu, %d, %p, %lu, %s)", usRow, usCol, (int) attr, str, len, str));
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str[ len ] = '\0';
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/* Disable line wrap, set the new cursor position, send the string, then
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enable line wrap (for OUTSTD() and OUTERR() ) */
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hb_gt_AnsiSetAttributes( attr );
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fprintf( stdout, "\x1B[=7l\x1B[%d;%dH%s\x1B[=7h", usRow + 1, usCol + 1, str );
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/* Restore whatever used to be at the termination position */
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str[ len ] = save;
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/* Update the cursor position */
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s_usRow = usRow;
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s_usCol = usCol + ( USHORT )len;
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if( s_usCol > s_usMaxCol ) s_usCol = s_usMaxCol;
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}
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void hb_gt_GetText( USHORT usTop, USHORT usLeft, USHORT usBottom, USHORT usRight, BYTE *dest )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_GetText(%hu, %hu, %hu, %hu, %p)", usTop, usLeft, usBottom, usRight, dest));
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/* TODO: */
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}
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void hb_gt_PutText( USHORT usTop, USHORT usLeft, USHORT usBottom, USHORT usRight, BYTE *srce )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_PutText(%hu, %hu, %hu, %hu, %p)", usTop, usLeft, usBottom, usRight, srce));
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/* TODO: */
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}
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void hb_gt_SetAttribute( USHORT usTop, USHORT usLeft, USHORT usBottom, USHORT usRight, BYTE attr )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_SetAttribute(%hu, %hu, %hu, %hu, %d)", usTop, usLeft, usBottom, usRight, (int) attr));
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/* TODO: */
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s_iAttribute = attr;
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}
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void hb_gt_DispBegin( void )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_DispBegin()"));
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/* TODO: */
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}
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void hb_gt_DispEnd( void )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_DispEnd()"));
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/* TODO: here we flush the buffer, and restore normal screen writes */
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}
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BOOL hb_gt_SetMode( USHORT uiRows, USHORT uiCols )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_SetMode(%hu, %hu)", uiRows, uiCols));
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/* TODO: */
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return 0; /* 0 = Ok, other = Fail */
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}
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void hb_gt_Replicate( BYTE c, ULONG ulLen )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_Replicate(%d, %lu)", (int) c, ulLen));
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/* TODO: this will write character c nlength times to the screen.
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Note that it is not used yet
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If there is no native function that supports this, it is
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already handled in a generic way by higher level functions.
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*/
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}
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BOOL hb_gt_GetBlink()
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_GetBlink()"));
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/* TODO: */
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return 1; /* 0 = blink, 1 = intens */
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}
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void hb_gt_SetBlink( BOOL bBlink )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_SetBlink(%d)", (int) bBlink));
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/* TODO: */
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}
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void hb_gt_Tone( double dFrequency, double dDuration )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_gt_Tone(%lf, %lf)", dFrequency, dDuration));
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/* TODO: Implement this */
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HB_SYMBOL_UNUSED( dFrequency );
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HB_SYMBOL_UNUSED( dDuration );
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}
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char * hb_gt_Version( void )
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{
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return "Harbour Terminal: PC ANSI";
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}
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