Sweden-Number/dlls/gdi32/metafile16.c

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/*
* Metafile functions
*
* Copyright David W. Metcalfe, 1994
* Copyright Niels de Carpentier, 1996
* Copyright Albrecht Kleine, 1996
* Copyright Huw Davies, 1996
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <string.h>
#include <fcntl.h>
#include "wine/winbase16.h"
#include "wine/wingdi16.h"
#include "wownt32.h"
#include "winreg.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(metafile);
#define METAFILE_MEMORY 1
#define METAFILE_DISK 2
#define MFHEADERSIZE (sizeof(METAHEADER))
#define MFVERSION 0x300
/******************************************************************
* MF_GetMetaHeader16
*
* Returns ptr to METAHEADER associated with HMETAFILE16
* Should be followed by call to MF_ReleaseMetaHeader16
*/
static METAHEADER *MF_GetMetaHeader16( HMETAFILE16 hmf )
{
return GlobalLock16(hmf);
}
/******************************************************************
* MF_ReleaseMetaHeader16
*
* Releases METAHEADER associated with HMETAFILE16
*/
static BOOL16 MF_ReleaseMetaHeader16( HMETAFILE16 hmf )
{
return GlobalUnlock16( hmf );
}
/******************************************************************
* create_metafile16
*
* Create a 16-bit metafile from a 32-bit one. The 32-bit one is deleted.
*/
static HMETAFILE16 create_metafile16( HMETAFILE hmf )
{
UINT size;
HMETAFILE16 hmf16;
if (!hmf) return 0;
size = GetMetaFileBitsEx( hmf, 0, NULL );
hmf16 = GlobalAlloc16( GMEM_MOVEABLE, size );
if (hmf16)
{
void *buffer = GlobalLock16( hmf16 );
GetMetaFileBitsEx( hmf, size, buffer );
GlobalUnlock16( hmf16 );
}
DeleteMetaFile( hmf );
return hmf16;
}
/******************************************************************
* create_metafile32
*
* Create a 32-bit metafile from a 16-bit one.
*/
static HMETAFILE create_metafile32( HMETAFILE16 hmf16 )
{
METAHEADER *mh = MF_GetMetaHeader16( hmf16 );
if (!mh) return 0;
return SetMetaFileBitsEx( mh->mtSize * 2, (BYTE *)mh );
}
/**********************************************************************
* CreateMetaFile (GDI.125)
*/
HDC16 WINAPI CreateMetaFile16( LPCSTR filename )
{
return HDC_16( CreateMetaFileA( filename ) );
}
/******************************************************************
* CloseMetaFile (GDI.126)
*/
HMETAFILE16 WINAPI CloseMetaFile16(HDC16 hdc)
{
return create_metafile16( CloseMetaFile( HDC_32(hdc) ));
}
/******************************************************************
* DeleteMetaFile (GDI.127)
*/
BOOL16 WINAPI DeleteMetaFile16( HMETAFILE16 hmf )
{
return !GlobalFree16( hmf );
}
/******************************************************************
* GetMetaFile (GDI.124)
*/
HMETAFILE16 WINAPI GetMetaFile16( LPCSTR lpFilename )
{
return create_metafile16( GetMetaFileA( lpFilename ));
}
/******************************************************************
* CopyMetaFile (GDI.151)
*/
HMETAFILE16 WINAPI CopyMetaFile16( HMETAFILE16 hSrcMetaFile, LPCSTR lpFilename)
{
HMETAFILE hmf = create_metafile32( hSrcMetaFile );
HMETAFILE hmf2 = CopyMetaFileA( hmf, lpFilename );
DeleteMetaFile( hmf );
return create_metafile16( hmf2 );
}
/******************************************************************
* IsValidMetaFile (GDI.410)
*
* Attempts to check if a given metafile is correctly formatted.
* Currently, the only things verified are several properties of the
* header.
*
* RETURNS
* TRUE if hmf passes some tests for being a valid metafile, FALSE otherwise.
*
* BUGS
* This is not exactly what windows does, see _Undocumented_Windows_
* for details.
*/
BOOL16 WINAPI IsValidMetaFile16(HMETAFILE16 hmf)
{
BOOL16 res=FALSE;
METAHEADER *mh = MF_GetMetaHeader16(hmf);
if (mh) {
if (mh->mtType == METAFILE_MEMORY || mh->mtType == METAFILE_DISK)
if (mh->mtHeaderSize == MFHEADERSIZE/sizeof(INT16))
if (mh->mtVersion == MFVERSION)
res=TRUE;
MF_ReleaseMetaHeader16(hmf);
}
TRACE("IsValidMetaFile %x => %d\n",hmf,res);
return res;
}
/******************************************************************
* PlayMetaFile (GDI.123)
*
*/
BOOL16 WINAPI PlayMetaFile16( HDC16 hdc, HMETAFILE16 hmf16 )
{
HMETAFILE hmf = create_metafile32( hmf16 );
BOOL ret = PlayMetaFile( HDC_32(hdc), hmf );
DeleteMetaFile( hmf );
return ret;
}
/******************************************************************
* EnumMetaFile (GDI.175)
*
*/
BOOL16 WINAPI EnumMetaFile16( HDC16 hdc16, HMETAFILE16 hmf,
MFENUMPROC16 lpEnumFunc, LPARAM lpData )
{
METAHEADER *mh = MF_GetMetaHeader16(hmf);
METARECORD *mr;
HANDLETABLE16 *ht;
HDC hdc = HDC_32(hdc16);
HGLOBAL16 hHT;
SEGPTR spht;
unsigned int offset = 0;
WORD i, seg;
HPEN hPen;
HBRUSH hBrush;
HFONT hFont;
WORD args[8];
BOOL16 result = TRUE;
TRACE("(%p, %04x, %p, %08lx)\n", hdc, hmf, lpEnumFunc, lpData);
if(!mh) return FALSE;
/* save the current pen, brush and font */
hPen = GetCurrentObject(hdc, OBJ_PEN);
hBrush = GetCurrentObject(hdc, OBJ_BRUSH);
hFont = GetCurrentObject(hdc, OBJ_FONT);
/* create the handle table */
hHT = GlobalAlloc16(GMEM_MOVEABLE | GMEM_ZEROINIT,
sizeof(HANDLETABLE16) * mh->mtNoObjects);
spht = WOWGlobalLock16(hHT);
seg = hmf | 7;
offset = mh->mtHeaderSize * 2;
/* loop through metafile records */
args[7] = hdc16;
args[6] = SELECTOROF(spht);
args[5] = OFFSETOF(spht);
args[4] = seg + (HIWORD(offset) << __AHSHIFT);
args[3] = LOWORD(offset);
args[2] = mh->mtNoObjects;
args[1] = HIWORD(lpData);
args[0] = LOWORD(lpData);
while (offset < (mh->mtSize * 2))
{
DWORD ret;
mr = (METARECORD *)((char *)mh + offset);
WOWCallback16Ex( (DWORD)lpEnumFunc, WCB16_PASCAL, sizeof(args), args, &ret );
if (!LOWORD(ret))
{
result = FALSE;
break;
}
offset += (mr->rdSize * 2);
args[4] = seg + (HIWORD(offset) << __AHSHIFT);
args[3] = LOWORD(offset);
}
SelectObject(hdc, hBrush);
SelectObject(hdc, hPen);
SelectObject(hdc, hFont);
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ht = GlobalLock16(hHT);
/* free objects in handle table */
for(i = 0; i < mh->mtNoObjects; i++)
if(*(ht->objectHandle + i) != 0)
DeleteObject( (HGDIOBJ)(ULONG_PTR)(*(ht->objectHandle + i) ));
/* free handle table */
GlobalFree16(hHT);
MF_ReleaseMetaHeader16(hmf);
return result;
}
/******************************************************************
* GetMetaFileBits (GDI.159)
*
* Trade in a metafile object handle for a handle to the metafile memory.
*
* PARAMS
* hmf [I] metafile handle
*/
HGLOBAL16 WINAPI GetMetaFileBits16( HMETAFILE16 hmf )
{
TRACE("hMem out: %04x\n", hmf);
return hmf;
}
/******************************************************************
* SetMetaFileBits (GDI.160)
*
* Trade in a metafile memory handle for a handle to a metafile object.
* The memory region should hold a proper metafile, otherwise
* problems will occur when it is used. Validity of the memory is not
* checked. The function is essentially just the identity function.
*
* PARAMS
* hMem [I] handle to a memory region holding a metafile
*
* RETURNS
* Handle to a metafile on success, NULL on failure..
*/
HMETAFILE16 WINAPI SetMetaFileBits16( HGLOBAL16 hMem )
{
TRACE("hmf out: %04x\n", hMem);
return hMem;
}
/******************************************************************
* SetMetaFileBitsBetter (GDI.196)
*
* Trade in a metafile memory handle for a handle to a metafile object,
* making a cursory check (using IsValidMetaFile()) that the memory
* handle points to a valid metafile.
*
* RETURNS
* Handle to a metafile on success, NULL on failure..
*/
HMETAFILE16 WINAPI SetMetaFileBitsBetter16( HMETAFILE16 hMeta )
{
if( IsValidMetaFile16( hMeta ) )
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return GlobalReAlloc16( hMeta, 0, GMEM_SHARE | GMEM_NODISCARD | GMEM_MODIFY);
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return 0;
}