143 lines
4.9 KiB
C
143 lines
4.9 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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* Zebra barcode library
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*
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* Copyright 2010 Viktor Szakats (harbour syenar.net)
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* Copyright 2010 Mindaugas Kavaliauskas <dbtopas at dbtopas.lt>
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* www - http://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, or (at your option)
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* any later version.
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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 software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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#include "hbzebra.h"
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#include "hbapierr.h"
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#include "hbvm.h"
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typedef void ( * HB_ZEBRA_CALLBACK )( void * cargo, double dX, double dY, double dWidth, double dHeight );
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int hb_zebra_draw( PHB_ZEBRA pZebra, HB_ZEBRA_CALLBACK pCallback, void * cargo, double dX, double dY, double dWidth, double dHeight, int iFlags )
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{
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double dLast;
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HB_SIZE n, nLen, nCount;
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HB_BOOL fBit, fLastBit;
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int i, iCol = pZebra->iCol;
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HB_SYMBOL_UNUSED( iFlags );
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if( pZebra->iError != 0 )
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return HB_ZEBRA_ERROR_INVALIDZEBRA;
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nLen = hb_bitbuffer_len( pZebra->pBits );
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fLastBit = hb_bitbuffer_get( pZebra->pBits, 0 );
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dLast = dX;
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nCount = 0;
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i = 0;
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for( n = 0; n < nLen; n++ )
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{
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fBit = hb_bitbuffer_get( pZebra->pBits, n );
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if( fBit != fLastBit )
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{
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if( fLastBit && pCallback )
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pCallback( cargo, dLast, dY, dWidth * nCount, dHeight );
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dLast += dWidth * nCount;
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nCount = 0;
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fLastBit = fBit;
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}
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nCount++;
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if( ++i == iCol )
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{
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if( nCount )
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{
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if( fBit && pCallback )
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pCallback( cargo, dLast, dY, dWidth * nCount, dHeight );
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nCount = 0;
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}
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i = 0;
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dY += dHeight;
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dLast = dX;
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if( n + 1 < nLen )
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fLastBit = hb_bitbuffer_get( pZebra->pBits, n + 1 );
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}
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}
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if( fLastBit && nCount && pCallback )
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pCallback( cargo, dLast, dY, dWidth * nCount, dHeight );
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return 0;
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}
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static void hb_zebra_draw_codeblock_callback( void * pDrawBlock, double dX, double dY, double dWidth, double dHeight )
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{
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if( pDrawBlock && HB_IS_BLOCK( pDrawBlock ) && hb_vmRequestReenter() )
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{
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hb_vmPushEvalSym();
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hb_vmPush( ( PHB_ITEM ) pDrawBlock );
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hb_vmPushDouble( dX, HB_DEFAULT_DECIMALS );
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hb_vmPushDouble( dY, HB_DEFAULT_DECIMALS );
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hb_vmPushDouble( dWidth, HB_DEFAULT_DECIMALS );
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hb_vmPushDouble( dHeight, HB_DEFAULT_DECIMALS );
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hb_vmSend( 4 );
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hb_vmRequestRestore();
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}
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}
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int hb_zebra_draw_codeblock( PHB_ZEBRA pZebra, PHB_ITEM pDrawBlock, double dX, double dY, double dWidth, double dHeight, int iFlags )
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{
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return hb_zebra_draw( pZebra, hb_zebra_draw_codeblock_callback, pDrawBlock, dX, dY, dWidth, dHeight, iFlags );
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}
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HB_FUNC( HB_ZEBRA_DRAW )
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{
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PHB_ZEBRA pZebra = hb_zebra_param( 1 );
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if( pZebra )
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{
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PHB_ITEM pDrawBlock = hb_param( 2, HB_IT_BLOCK );
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if( pDrawBlock )
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hb_retni( hb_zebra_draw_codeblock( pZebra, pDrawBlock, hb_parnd( 3 ), hb_parnd( 4 ), hb_parnd( 5 ), hb_parnd( 6 ), hb_parni( 7 ) ) );
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else
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hb_errRT_BASE( EG_ARG, 3012, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
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}
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}
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