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- add NTMW_INTERNAL structure

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- better structure implementation for ENUMFONTDATAW
- change NewEnumFontFamiliesEx to use the new structure
- some fixes and comments

svn path=/trunk/; revision=28911
This commit is contained in:
Timo Kreuzer 2007-09-07 03:33:00 +00:00
parent 19aed1070b
commit 2dbf3f528e
2 changed files with 35 additions and 39 deletions
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46
reactos/dll/win32/gdi32/objects/font.c
View file

@ -1321,59 +1321,67 @@ NewEnumFontFamiliesExW(
LPARAM lParam,
DWORD dwFlags)
{
ULONG_PTR idEnum, ulCount, ulSize;
ULONG_PTR idEnum, cbDataSize, cbRetSize;
PENUMFONTDATAW pEfdw;
PBYTE pBuffer;
PBYTE pMax;
INT ret = 1;
/* Open enumeration handle and find out how much memory we need */
idEnum = NtGdiEnumFontOpen(hDC,
EfdFontFamilies,
0,
LF_FACESIZE,
lpLogfont->lfFaceName,
lpLogfont->lfCharSet,
&ulCount);
(lpLogfont && lpLogfont->lfFaceName[0])? lpLogfont->lfFaceName : NULL,
lpLogfont? lpLogfont->lfCharSet : DEFAULT_CHARSET,
&cbDataSize);
if (idEnum == 0)
{
return 0;
}
if (ulCount == 0)
if (cbDataSize == 0)
{
NtGdiEnumFontClose(idEnum);
return 0;
}
pBuffer = HeapAlloc(GetProcessHeap(), 0, ulCount);
/* Allocate memory */
pBuffer = HeapAlloc(GetProcessHeap(), 0, cbDataSize);
if (pBuffer == NULL)
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
NtGdiEnumFontClose(idEnum);
return 0;
}
pMax = pBuffer + ulCount;
if (!NtGdiEnumFontChunk(hDC, idEnum, ulCount, &ulSize, (PVOID)pBuffer))
/* Do the enumeration */
if (!NtGdiEnumFontChunk(hDC, idEnum, cbDataSize, &cbRetSize, (PVOID)pBuffer))
{
HeapFree(GetProcessHeap(), 0, pBuffer);
NtGdiEnumFontClose(idEnum);
return 0;
}
/* Iterate through the structures */
for (pEfdw = (PENUMFONTDATAW)pBuffer;
(PBYTE)pEfdw < pMax && pEfdw->cbSize != 0 && ret != 0;
pEfdw = (PENUMFONTDATAW)((PBYTE)pEfdw + pEfdw->cbSize))
{
ENUMLOGFONTEXW *pElfew = &pEfdw->efdi.elfex;
NEWTEXTMETRICEXW *pNtmew = (NEWTEXTMETRICEXW*)((PBYTE)&pEfdw->efdi + pEfdw->efdi.cbSize + sizeof(DWORD)); // FIXME
DWORD dwFontType = pEfdw->efdi.dwFontType;
ret = lpEnumFontFamExProcW(pElfew, pNtmew, dwFontType, lParam);
/* Get start and end address */
pEfdw = (PENUMFONTDATAW)pBuffer;
pMax = pBuffer + cbDataSize;
/* Iterate through the structures */
while ((PBYTE)pEfdw < pMax && ret)
{
PNTMW_INTERNAL pNtmwi = (PNTMW_INTERNAL)((ULONG_PTR)pEfdw + pEfdw->ulNtmwiOffset);
ret = lpEnumFontFamExProcW(&pEfdw->elfexdv.elfEnumLogfontEx,
&pNtmwi->ntmw,
pEfdw->dwFontType,
lParam);
pEfdw = (PENUMFONTDATAW)((ULONG_PTR)pEfdw + pEfdw->cbSize);
}
/* Release the memory and close handle */
HeapFree(GetProcessHeap(), 0, pBuffer);
NtGdiEnumFontClose(idEnum);
return ret;
}

28
reactos/include/reactos/win32k/ntgdityp.h
View file

@ -120,33 +120,21 @@ typedef struct _TMW_INTERNAL
TMDIFF Diff;
} TMW_INTERNAL, *PTMW_INTERNAL;
typedef struct
typedef struct _NTMW_INTERNAL
{
ULONG cbSize;
DWORD dwFontType;
ENUMLOGFONTEXW elfex;
/*
* Yuan 14.5:
* DESIGNVECTOR is a variable-size data structure that specifies the number of
* axes and a value for each axis.
* So it maybe smaller than MM_MAX_NUMAXES.
*/
DESIGNVECTOR dv;
} ENUMFONTDATAINTW, *PENUMFONTDATAINTW;
TMDIFF tmd;
NEWTEXTMETRICEXW ntmw;
} NTMW_INTERNAL, *PNTMW_INTERNAL;
/* Warning: this structure is of variable size!
* It is only to access the cbSize and efdi member.
* The rest of the structure has to be parsed. */
typedef struct _ENUMFONTDATAW
{
ULONG cbSize;
ENUMFONTDATAINTW efdi;
/* The following 2 members do not have a constant offset! */
/* DWORD dwFlags;
ENUMTEXTMETRICW etm; */
ULONG ulNtmwiOffset;
DWORD dwFontType;
ENUMLOGFONTEXDVW elfexdv; /* variable size! */
/* NTMW_INTERNAL ntmwi; use ulNtwmOffset */
} ENUMFONTDATAW, *PENUMFONTDATAW;
/* Number Representation */
typedef struct _EFLOAT_S
{