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Sweden-Number/objects/enhmetafile.c

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/*
* Enhanced metafile functions
* Copyright 1998 Douglas Ridgway
* 1999 Huw D M Davies
*/
#include <string.h>
#include <assert.h>
#include "winbase.h"
#include "wingdi.h"
#include "wine/winestring.h"
#include "winerror.h"
#include "enhmetafile.h"
#include "debug.h"
#include "heap.h"
DEFAULT_DEBUG_CHANNEL(enhmetafile)
/****************************************************************************
* EMF_Create_HENHMETAFILE
*/
HENHMETAFILE EMF_Create_HENHMETAFILE(ENHMETAHEADER *emh, HFILE hFile, HANDLE
hMapping )
{
HENHMETAFILE hmf = GDI_AllocObject( sizeof(ENHMETAFILEOBJ),
ENHMETAFILE_MAGIC );
ENHMETAFILEOBJ *metaObj = (ENHMETAFILEOBJ *)GDI_HEAP_LOCK( hmf );
metaObj->emh = emh;
metaObj->hFile = hFile;
metaObj->hMapping = hMapping;
GDI_HEAP_UNLOCK( hmf );
return hmf;
}
/****************************************************************************
* EMF_Delete_HENHMETAFILE
*/
static BOOL EMF_Delete_HENHMETAFILE( HENHMETAFILE hmf )
{
ENHMETAFILEOBJ *metaObj = (ENHMETAFILEOBJ *)GDI_GetObjPtr( hmf,
ENHMETAFILE_MAGIC );
if(!metaObj) return FALSE;
if(metaObj->hMapping) {
UnmapViewOfFile( metaObj->emh );
CloseHandle( metaObj->hMapping );
CloseHandle( metaObj->hFile );
} else
HeapFree( SystemHeap, 0, metaObj->emh );
return GDI_FreeObject( hmf );
}
/******************************************************************
* EMF_GetEnhMetaHeader
*
* Returns ptr to ENHMETAHEADER associated with HENHMETAFILE
* Should be followed by call to EMF_ReleaseEnhMetaHeader
*/
static ENHMETAHEADER *EMF_GetEnhMetaHeader( HENHMETAFILE hmf )
{
ENHMETAFILEOBJ *metaObj = (ENHMETAFILEOBJ *)GDI_GetObjPtr( hmf,
ENHMETAFILE_MAGIC );
TRACE(enhmetafile, "hmf %04x -> enhmetaObj %p\n", hmf, metaObj);
return metaObj->emh;
}
/******************************************************************
* EMF_ReleaseEnhMetaHeader
*
* Releases ENHMETAHEADER associated with HENHMETAFILE
*/
static BOOL EMF_ReleaseEnhMetaHeader( HENHMETAFILE hmf )
{
return GDI_HEAP_UNLOCK( hmf );
}
/*****************************************************************************
* EMF_GetEnhMetaFile
*
*/
static HENHMETAFILE EMF_GetEnhMetaFile( HFILE hFile )
{
ENHMETAHEADER *emh;
HANDLE hMapping;
hMapping = CreateFileMappingA( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
emh = MapViewOfFile( hMapping, FILE_MAP_READ, 0, 0, 0 );
if (emh->iType != EMR_HEADER || emh->dSignature != ENHMETA_SIGNATURE) {
WARN(enhmetafile, "Invalid emf header type 0x%08lx sig 0x%08lx.\n",
emh->iType, emh->dSignature);
UnmapViewOfFile( emh );
CloseHandle( hMapping );
return 0;
}
return EMF_Create_HENHMETAFILE( emh, hFile, hMapping );
}
/*****************************************************************************
* GetEnhMetaFileA (GDI32.174)
*
*
*/
HENHMETAFILE WINAPI GetEnhMetaFileA(
LPCSTR lpszMetaFile /* filename of enhanced metafile */
)
{
HENHMETAFILE hmf;
HFILE hFile;
hFile = CreateFileA(lpszMetaFile, GENERIC_READ, 0, 0, OPEN_EXISTING, 0, 0);
if (hFile == INVALID_HANDLE_VALUE) {
WARN(enhmetafile,"could not open %s\n", lpszMetaFile);
return 0;
}
hmf = EMF_GetEnhMetaFile( hFile );
if(!hmf)
CloseHandle( hFile );
return hmf;
}
/*****************************************************************************
* GetEnhMetaFile32W (GDI32.180)
*/
HENHMETAFILE WINAPI GetEnhMetaFileW(
LPCWSTR lpszMetaFile) /* filename of enhanced metafile */
{
HENHMETAFILE hmf;
HFILE hFile;
hFile = CreateFileW(lpszMetaFile, GENERIC_READ, 0, 0, OPEN_EXISTING, 0, 0);
if (hFile == INVALID_HANDLE_VALUE) {
WARN(enhmetafile,"could not open %s\n", debugstr_w(lpszMetaFile));
return 0;
}
hmf = EMF_GetEnhMetaFile( hFile );
if(!hmf)
CloseHandle( hFile );
return hmf;
}
/*****************************************************************************
* GetEnhMetaFileHeader (GDI32.178)
*
* If _buf_ is NULL, returns the size of buffer required.
* Otherwise, copy up to _bufsize_ bytes of enhanced metafile header into
* _buf.
*/
UINT WINAPI GetEnhMetaFileHeader(
HENHMETAFILE hmf, /* enhanced metafile */
UINT bufsize, /* size of buffer */
LPENHMETAHEADER buf /* buffer */
)
{
LPENHMETAHEADER emh;
if (!buf) return sizeof(ENHMETAHEADER);
emh = EMF_GetEnhMetaHeader(hmf);
memmove(buf, emh, MIN(sizeof(ENHMETAHEADER), bufsize));
EMF_ReleaseEnhMetaHeader(hmf);
return MIN(sizeof(ENHMETAHEADER), bufsize);
}
/*****************************************************************************
* GetEnhMetaFileDescription32A (GDI32.176)
*/
UINT WINAPI GetEnhMetaFileDescriptionA(
HENHMETAFILE hmf, /* enhanced metafile */
UINT size, /* size of buf */
LPSTR buf /* buffer to receive description */
)
{
LPENHMETAHEADER emh = EMF_GetEnhMetaHeader(hmf);
INT first;
if(emh->nDescription == 0 || emh->offDescription == 0) {
EMF_ReleaseEnhMetaHeader(hmf);
return 0;
}
if (!buf || !size ) {
EMF_ReleaseEnhMetaHeader(hmf);
return emh->nDescription;
}
first = lstrlenW( (WCHAR *) ((char *) emh + emh->offDescription));
lstrcpynWtoA(buf, (WCHAR *) ((char *) emh + emh->offDescription), size);
buf += first + 1;
lstrcpynWtoA(buf, (WCHAR *) ((char *) emh + emh->offDescription+2*(first+1)),
size - first - 1);
EMF_ReleaseEnhMetaHeader(hmf);
return MIN(size, emh->nDescription);
}
/*****************************************************************************
* GetEnhMetaFileDescription32W (GDI32.177)
*
* Copies the description string of an enhanced metafile into a buffer
* _buf_.
*
* If _buf_ is NULL, returns size of _buf_ required. Otherwise, returns
* number of characters copied.
*/
UINT WINAPI GetEnhMetaFileDescriptionW(
HENHMETAFILE hmf, /* enhanced metafile */
UINT size, /* size of buf */
LPWSTR buf /* buffer to receive description */
)
{
LPENHMETAHEADER emh = EMF_GetEnhMetaHeader(hmf);
if(emh->nDescription == 0 || emh->offDescription == 0) {
EMF_ReleaseEnhMetaHeader(hmf);
return 0;
}
if (!buf || !size ) {
EMF_ReleaseEnhMetaHeader(hmf);
return emh->nDescription;
}
memmove(buf, (char *) emh + emh->offDescription,
MIN(size,emh->nDescription));
EMF_ReleaseEnhMetaHeader(hmf);
return MIN(size, emh->nDescription);
}
/****************************************************************************
* SetEnhMetaFileBits (GDI32.315)
*
* Creates an enhanced metafile by copying _bufsize_ bytes from _buf_.
*/
HENHMETAFILE WINAPI SetEnhMetaFileBits(UINT bufsize, const BYTE *buf)
{
ENHMETAHEADER *emh = HeapAlloc( SystemHeap, 0, bufsize );
memmove(emh, buf, bufsize);
return EMF_Create_HENHMETAFILE( emh, 0, 0 );
}
/*****************************************************************************
* GetEnhMetaFileBits (GDI32.175)
*
*/
UINT WINAPI GetEnhMetaFileBits(
HENHMETAFILE hmf,
UINT bufsize,
LPBYTE buf
) {
return 0;
}
/*****************************************************************************
* PlayEnhMetaFileRecord (GDI32.264)
*
* Render a single enhanced metafile record in the device context hdc.
*
* RETURNS
* TRUE on success, FALSE on error.
* BUGS
* Many unimplemented records.
*/
BOOL WINAPI PlayEnhMetaFileRecord(
HDC hdc, /* device context in which to render EMF record */
LPHANDLETABLE handletable, /* array of handles to be used in rendering record */
const ENHMETARECORD *mr, /* EMF record to render */
UINT handles /* size of handle array */
)
{
int type;
TRACE(enhmetafile,
"hdc = %08x, handletable = %p, record = %p, numHandles = %d\n",
hdc, handletable, mr, handles);
if (!mr) return FALSE;
type = mr->iType;
TRACE(enhmetafile, " type=%d\n", type);
switch(type)
{
case EMR_HEADER:
{
/* ENHMETAHEADER *h = (LPENHMETAHEADER) mr; */
break;
}
case EMR_EOF:
break;
case EMR_GDICOMMENT:
/* application defined and processed */
break;
case EMR_SETMAPMODE:
{
DWORD mode = mr->dParm[0];
SetMapMode(hdc, mode);
break;
}
case EMR_SETBKMODE:
{
DWORD mode = mr->dParm[0];
SetBkMode(hdc, mode);
break;
}
case EMR_SETBKCOLOR:
{
DWORD mode = mr->dParm[0];
SetBkColor(hdc, mode);
break;
}
case EMR_SETPOLYFILLMODE:
{
DWORD mode = mr->dParm[0];
SetPolyFillMode(hdc, mode);
break;
}
case EMR_SETROP2:
{
DWORD mode = mr->dParm[0];
SetROP2(hdc, mode);
break;
}
case EMR_SETSTRETCHBLTMODE:
{
DWORD mode = mr->dParm[0];
SetStretchBltMode(hdc, mode);
break;
}
case EMR_SETTEXTALIGN:
{
DWORD align = mr->dParm[0];
SetTextAlign(hdc, align);
break;
}
case EMR_SETTEXTCOLOR:
{
DWORD color = mr->dParm[0];
SetTextColor(hdc, color);
break;
}
case EMR_SAVEDC:
{
SaveDC(hdc);
break;
}
case EMR_RESTOREDC:
{
RestoreDC(hdc, mr->dParm[0]);
break;
}
case EMR_INTERSECTCLIPRECT:
{
INT left = mr->dParm[0], top = mr->dParm[1], right = mr->dParm[2],
bottom = mr->dParm[3];
IntersectClipRect(hdc, left, top, right, bottom);
break;
}
case EMR_SELECTOBJECT:
{
DWORD obj = mr->dParm[0];
SelectObject(hdc, (handletable->objectHandle)[obj]);
break;
}
case EMR_DELETEOBJECT:
{
DWORD obj = mr->dParm[0];
DeleteObject( (handletable->objectHandle)[obj]);
(handletable->objectHandle)[obj] = 0;
break;
}
case EMR_SETWINDOWORGEX:
{
DWORD x = mr->dParm[0], y = mr->dParm[1];
SetWindowOrgEx(hdc, x, y, NULL);
break;
}
case EMR_SETWINDOWEXTEX:
{
DWORD x = mr->dParm[0], y = mr->dParm[1];
SetWindowExtEx(hdc, x, y, NULL);
break;
}
case EMR_SETVIEWPORTORGEX:
{
DWORD x = mr->dParm[0], y = mr->dParm[1];
SetViewportOrgEx(hdc, x, y, NULL);
break;
}
case EMR_SETVIEWPORTEXTEX:
{
DWORD x = mr->dParm[0], y = mr->dParm[1];
SetViewportExtEx(hdc, x, y, NULL);
break;
}
case EMR_CREATEPEN:
{
DWORD obj = mr->dParm[0];
(handletable->objectHandle)[obj] =
CreatePenIndirect((LOGPEN *) &(mr->dParm[1]));
break;
}
case EMR_EXTCREATEPEN:
{
DWORD obj = mr->dParm[0];
DWORD style = mr->dParm[1], brush = mr->dParm[2];
LOGBRUSH *b = (LOGBRUSH *) &mr->dParm[3];
FIXME(enhmetafile, "Some ExtCreatePen args not handled\n");
(handletable->objectHandle)[obj] =
ExtCreatePen(style, brush, b, 0, NULL);
break;
}
case EMR_CREATEBRUSHINDIRECT:
{
DWORD obj = mr->dParm[0];
(handletable->objectHandle)[obj] =
CreateBrushIndirect((LOGBRUSH *) &(mr->dParm[1]));
break;
}
case EMR_EXTCREATEFONTINDIRECTW:
{
DWORD obj = mr->dParm[0];
(handletable->objectHandle)[obj] =
CreateFontIndirectW((LOGFONTW *) &(mr->dParm[1]));
break;
}
case EMR_MOVETOEX:
{
DWORD x = mr->dParm[0], y = mr->dParm[1];
MoveToEx(hdc, x, y, NULL);
break;
}
case EMR_LINETO:
{
DWORD x = mr->dParm[0], y = mr->dParm[1];
LineTo(hdc, x, y);
break;
}
case EMR_RECTANGLE:
{
INT left = mr->dParm[0], top = mr->dParm[1], right = mr->dParm[2],
bottom = mr->dParm[3];
Rectangle(hdc, left, top, right, bottom);
break;
}
case EMR_ELLIPSE:
{
INT left = mr->dParm[0], top = mr->dParm[1], right = mr->dParm[2],
bottom = mr->dParm[3];
Ellipse(hdc, left, top, right, bottom);
break;
}
case EMR_POLYGON16:
{
/* 0-3 : a bounding rectangle? */
INT count = mr->dParm[4];
FIXME(enhmetafile, "Some Polygon16 args not handled\n");
Polygon16(hdc, (POINT16 *)&mr->dParm[5], count);
break;
}
case EMR_POLYLINE16:
{
/* 0-3 : a bounding rectangle? */
INT count = mr->dParm[4];
FIXME(enhmetafile, "Some Polyline16 args not handled\n");
Polyline16(hdc, (POINT16 *)&mr->dParm[5], count);
break;
}
#if 0
case EMR_POLYPOLYGON16:
{
INT polygons = mr->dParm[z];
LPPOINT16 pts = (LPPOINT16) &mr->dParm[x];
LPINT16 counts = (LPINT16) &mr->dParm[y];
PolyPolygon16(hdc, pts, counts, polygons);
break;
}
#endif
case EMR_STRETCHDIBITS:
{
LONG xDest = mr->dParm[4];
LONG yDest = mr->dParm[5];
LONG xSrc = mr->dParm[6];
LONG ySrc = mr->dParm[7];
LONG cxSrc = mr->dParm[8];
LONG cySrc = mr->dParm[9];
DWORD offBmiSrc = mr->dParm[10];
DWORD offBitsSrc = mr->dParm[12];
DWORD iUsageSrc = mr->dParm[14];
DWORD dwRop = mr->dParm[15];
LONG cxDest = mr->dParm[16];
LONG cyDest = mr->dParm[17];
StretchDIBits(hdc,xDest,yDest,cxDest,cyDest,
xSrc,ySrc,cxSrc,cySrc,
((char *)mr)+offBitsSrc,
(const BITMAPINFO *)(((char *)mr)+offBmiSrc),
iUsageSrc,dwRop);
break;
}
case EMR_EXTTEXTOUTW:
{
/* 0-3: ??? */
DWORD flags = mr->dParm[4];
/* 5, 6: ??? */
DWORD x = mr->dParm[7], y = mr->dParm[8];
DWORD count = mr->dParm[9];
/* 10-16: ??? */
LPWSTR str = (LPWSTR)& mr->dParm[17];
/* trailing info: dx array? */
FIXME(enhmetafile, "Many ExtTextOut args not handled\n");
ExtTextOutW(hdc, x, y, flags, /* lpRect */ NULL,
str, count, /* lpDx */ NULL);
break;
}
default:
FIXME(enhmetafile, "type %d is unimplemented\n", type);
/* SetLastError(E_NOTIMPL); */
break;
}
return TRUE;
}
/*****************************************************************************
*
* EnumEnhMetaFile32 (GDI32.79)
*
* Walk an enhanced metafile, calling a user-specified function _EnhMetaFunc_
* for each
* record. Returns when either every record has been used or
* when _EnhMetaFunc_ returns FALSE.
*
*
* RETURNS
* TRUE if every record is used, FALSE if any invocation of _EnhMetaFunc_
* returns FALSE.
*
* BUGS
* Ignores rect.
*/
BOOL WINAPI EnumEnhMetaFile(
HDC hdc, /* device context to pass to _EnhMetaFunc_ */
HENHMETAFILE hmf, /* EMF to walk */
ENHMFENUMPROC callback, /* callback function */
LPVOID data, /* optional data for callback function */
const RECT *rect /* bounding rectangle for rendered metafile */
)
{
BOOL ret = TRUE;
LPENHMETARECORD p = (LPENHMETARECORD) EMF_GetEnhMetaHeader(hmf);
INT count = ((LPENHMETAHEADER) p)->nHandles;
HANDLETABLE *ht = HeapAlloc( GetProcessHeap(), 0,
sizeof(HANDLETABLE)*count);
ht->objectHandle[0] = hmf;
while (ret) {
ret = (*callback)(hdc, ht, p, count, data);
if (p->iType == EMR_EOF) break;
p = (LPENHMETARECORD) ((char *) p + p->nSize);
}
HeapFree( GetProcessHeap(), 0, ht);
EMF_ReleaseEnhMetaHeader(hmf);
return ret;
}
/**************************************************************************
* PlayEnhMetaFile (GDI32.263)
*
* Renders an enhanced metafile into a specified rectangle *lpRect
* in device context hdc.
*
* BUGS
* Almost entirely unimplemented
*
*/
BOOL WINAPI PlayEnhMetaFile(
HDC hdc, /* DC to render into */
HENHMETAFILE hmf, /* metafile to render */
const RECT *lpRect /* rectangle to place metafile inside */
)
{
LPENHMETARECORD p = (LPENHMETARECORD) EMF_GetEnhMetaHeader(hmf);
INT count = ((LPENHMETAHEADER) p)->nHandles;
HANDLETABLE *ht = HeapAlloc( GetProcessHeap(), 0,
sizeof(HANDLETABLE) * count);
BOOL ret = FALSE;
INT savedMode = 0;
if (lpRect) {
LPENHMETAHEADER h = (LPENHMETAHEADER) p;
FLOAT xscale = (h->rclBounds.right - h->rclBounds.left) /
(lpRect->right - lpRect->left);
FLOAT yscale = (h->rclBounds.bottom - h->rclBounds.top) /
(lpRect->bottom - lpRect->top);
XFORM xform;
xform.eM11 = xscale;
xform.eM12 = 0;
xform.eM21 = 0;
xform.eM22 = yscale;
xform.eDx = lpRect->left;
xform.eDy = lpRect->top;
FIXME(enhmetafile, "play into rect doesn't work\n");
savedMode = SetGraphicsMode(hdc, GM_ADVANCED);
if (!SetWorldTransform(hdc, &xform)) {
WARN(enhmetafile, "World transform failed!\n");
}
}
ht->objectHandle[0] = hmf;
while (1) {
PlayEnhMetaFileRecord(hdc, ht, p, count);
if (p->iType == EMR_EOF) break;
p = (LPENHMETARECORD) ((char *) p + p->nSize); /* casted so that arithmetic is in bytes */
}
HeapFree( GetProcessHeap(), 0, ht );
EMF_ReleaseEnhMetaHeader(hmf);
if (savedMode) SetGraphicsMode(hdc, savedMode);
ret = TRUE; /* FIXME: calculate a more accurate return value */
return ret;
}
/*****************************************************************************
* DeleteEnhMetaFile (GDI32.68)
*
* Deletes an enhanced metafile and frees the associated storage.
*/
BOOL WINAPI DeleteEnhMetaFile(HENHMETAFILE hmf)
{
return EMF_Delete_HENHMETAFILE( hmf );
}
/*****************************************************************************
* CopyEnhMetaFileA (GDI32.21) Duplicate an enhanced metafile
*
*
*/
HENHMETAFILE WINAPI CopyEnhMetaFileA(
HENHMETAFILE hmfSrc,
LPCSTR file)
{
ENHMETAHEADER *emrSrc = EMF_GetEnhMetaHeader( hmfSrc ), *emrDst;
HENHMETAFILE hmfDst;
if (!file) {
emrDst = HeapAlloc( SystemHeap, 0, emrSrc->nBytes );
memcpy( emrDst, emrSrc, emrSrc->nBytes );
hmfDst = EMF_Create_HENHMETAFILE( emrDst, 0, 0 );
} else {
HFILE hFile;
hFile = CreateFileA( file, GENERIC_WRITE | GENERIC_READ, 0, NULL,
CREATE_ALWAYS, 0, -1);
WriteFile( hFile, emrSrc, emrSrc->nBytes, 0, 0);
hmfDst = EMF_GetEnhMetaFile( hFile );
}
EMF_ReleaseEnhMetaHeader( hmfSrc );
return hmfDst;
}
/*****************************************************************************
* GetEnhMetaFilePaletteEntries (GDI32.179)
*
* Copy the palette and report size
*/
UINT WINAPI GetEnhMetaFilePaletteEntries(HENHMETAFILE hemf,
UINT cEntries,
LPPALETTEENTRY lppe)
{
return 0;
}
/******************************************************************
* SetWinMetaFileBits (GDI32.343)
*
* Translate from old style to new style.
*/
HENHMETAFILE WINAPI SetWinMetaFileBits(UINT cbBuffer,
CONST BYTE *lpbBuffer,
HDC hdcRef,
CONST METAFILEPICT *lpmfp
)
{
FIXME(enhmetafile,"Stub\n");
return 0;
}
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