239 lines
7.4 KiB
C
239 lines
7.4 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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* Printing subsystem for Windows using GUI printing
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*
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* Copyright 2010 Viktor Szakats (harbour syenar.net)
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* Copyright 2010 Xavi <jarabal/at/gmail.com>
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* Copyright 2004 Peter Rees <peter@rees.co.nz> Rees Software & Systems Ltd
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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 "hbwin.h"
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#include "hbwapi.h"
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#include "hbapifs.h"
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#include "hbapiitm.h"
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#ifndef QUERYESCSUPPORT
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#define QUERYESCSUPPORT 8
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#endif
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#ifndef BI_JPEG
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#define BI_JPEG 4
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#endif
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#ifndef BI_PNG
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#define BI_PNG 5
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#endif
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/* Functions for loading & printing bitmaps */
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int hbwin_bitmapType( const void * pImgBuf, HB_SIZE size )
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{
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int iType = HB_WIN_BITMAP_UNKNOWN;
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if( pImgBuf )
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{
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if( size > 2 && memcmp( pImgBuf, "BM", 2 ) == 0 )
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iType = HB_WIN_BITMAP_BMP;
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else if( size > 3 && memcmp( pImgBuf, "\xFF\xD8\xFF", 3 ) == 0 )
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iType = HB_WIN_BITMAP_JPEG;
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else if( size > 4 && memcmp( pImgBuf, "\x89PNG", 4 ) == 0 )
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iType = HB_WIN_BITMAP_PNG;
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}
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return iType;
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}
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HB_FUNC( WIN_BITMAPTYPE )
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{
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hb_retni( hbwin_bitmapType( hb_parc( 1 ), hb_parclen( 1 ) ) );
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}
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HB_FUNC( WIN_LOADBITMAPFILE )
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{
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HB_FHANDLE fhnd = hb_fsOpen( hb_parcx( 1 ), FO_READ | FO_SHARED );
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/* Set default return value */
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hb_retc_null();
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if( fhnd != FS_ERROR )
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{
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HB_SIZE nSize = hb_fsSeek( fhnd, 0, FS_END );
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/* TOFIX: No check is done on read data from disk which is a large security hole
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and may cause GPF even in simple error cases, like invalid file content.
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[vszakats] */
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if( nSize > 2 && nSize <= ( 32 * 1024 * 1024 ) )
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{
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void * pbmfh = hb_xgrab( nSize + 1 );
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hb_fsSeek( fhnd, 0, FS_SET );
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if( hb_fsReadLarge( fhnd, pbmfh, nSize ) == nSize && hbwin_bitmapType( pbmfh, nSize ) != HB_WIN_BITMAP_UNKNOWN )
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hb_retclen_buffer( ( char * ) pbmfh, nSize );
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else
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hb_xfree( pbmfh );
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}
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hb_fsClose( fhnd );
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}
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}
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/* Some compilers don't implement these define [jarabal] */
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#ifndef CHECKJPEGFORMAT
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#define CHECKJPEGFORMAT 4119
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#endif
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#ifndef CHECKPNGFORMAT
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#define CHECKPNGFORMAT 4120
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#endif
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static int hbwin_bitmapIsSupported( HDC hDC, int iType, const void * pImgBuf, HB_SIZE nSize )
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{
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if( hDC &&
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iType != HB_WIN_BITMAP_UNKNOWN &&
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pImgBuf &&
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nSize >= sizeof( BITMAPCOREHEADER ) )
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{
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if( iType == HB_WIN_BITMAP_BMP )
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return 0;
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else
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{
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int iRes = iType = ( iType == HB_WIN_BITMAP_JPEG ? CHECKJPEGFORMAT : CHECKPNGFORMAT );
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iRes = ExtEscape( hDC, QUERYESCSUPPORT, sizeof( iRes ), ( LPCSTR ) &iRes, 0, 0 );
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if( iRes > 0 )
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{
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if( ExtEscape( hDC, iType, ( int ) nSize, ( LPCSTR ) pImgBuf, sizeof( iRes ), ( LPSTR ) &iRes ) > 0 )
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{
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if( iRes == 1 )
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return 0;
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else
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return -4;
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}
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else
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return -3;
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}
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else
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return -2;
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}
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}
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else
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return -1;
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}
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HB_FUNC( WIN_BITMAPISSUPPORTED )
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{
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const char * pImgBuf = hb_parc( 2 );
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HB_SIZE nSize = hb_parclen( 2 );
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hb_retni( hbwin_bitmapIsSupported( hbwapi_par_HDC( 1 ), hbwin_bitmapType( pImgBuf, nSize ), pImgBuf, nSize ) );
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}
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HB_FUNC( WIN_DRAWBITMAP )
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{
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BITMAPINFO * pbmi = NULL;
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BYTE * pBits = NULL;
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HDC hDC = hbwapi_par_HDC( 1 );
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HB_SIZE nSize = hb_parclen( 2 );
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BITMAPFILEHEADER * pbmfh = ( BITMAPFILEHEADER * ) hb_parc( 2 );
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int iType = hbwin_bitmapType( pbmfh, nSize );
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/* TOFIX: No check is done on 2nd parameter which is a large security hole
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and may cause GPF in simple error cases.
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[vszakats] */
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if( hbwin_bitmapIsSupported( hDC, iType, pbmfh, nSize ) == 0 )
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{
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int iWidth = hb_parni( 7 );
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int iHeight = hb_parni( 8 );
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if( iType == HB_WIN_BITMAP_BMP )
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{
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pbmi = ( BITMAPINFO * ) ( pbmfh + 1 );
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pBits = ( BYTE * ) pbmfh + pbmfh->bfOffBits;
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/* Remember there are 2 types of BitMap File */
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if( pbmi->bmiHeader.biSize == sizeof( BITMAPCOREHEADER ) )
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{
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iWidth = ( ( BITMAPCOREHEADER * ) pbmi )->bcWidth;
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iHeight = ( ( BITMAPCOREHEADER * ) pbmi )->bcHeight;
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}
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else
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{
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iWidth = pbmi->bmiHeader.biWidth;
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iHeight = abs( pbmi->bmiHeader.biHeight );
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}
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}
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else if( iWidth && iHeight )
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{
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BITMAPINFO bmi;
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memset( &bmi, 0, sizeof( bmi ) );
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bmi.bmiHeader.biSize = sizeof( BITMAPINFO );
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bmi.bmiHeader.biWidth = iWidth;
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bmi.bmiHeader.biHeight = -iHeight; /* top-down image */
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bmi.bmiHeader.biPlanes = 1;
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bmi.bmiHeader.biBitCount = 0;
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bmi.bmiHeader.biCompression = ( iType == HB_WIN_BITMAP_JPEG ? BI_JPEG : BI_PNG );
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bmi.bmiHeader.biSizeImage = ( DWORD ) nSize;
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pbmi = &bmi;
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pBits = ( BYTE * ) pbmfh;
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}
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if( pbmi && pBits )
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{
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#if ! defined( HB_OS_WIN_CE )
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SetStretchBltMode( hDC, COLORONCOLOR );
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#endif
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hb_retl( StretchDIBits( hDC, hb_parni( 3 ), hb_parni( 4 ), hb_parni( 5 ), hb_parni( 6 ),
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0, 0, iWidth, iHeight, pBits, pbmi,
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DIB_RGB_COLORS, SRCCOPY ) != ( int ) GDI_ERROR );
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}
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else
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hb_retl( HB_FALSE );
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}
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else
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hb_retl( HB_FALSE );
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}
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