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GetCharWidth32 implementation.

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svn path=/trunk/; revision=7203
This commit is contained in:
Filip Navara 2003-12-23 21:29:37 +00:00
parent 51d9fc9647
commit 3470b283b2
1 changed files with 76 additions and 2 deletions
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78
reactos/subsys/win32k/objects/text.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: text.c,v 1.64 2003/12/23 18:19:07 navaraf Exp $ */
/* $Id: text.c,v 1.65 2003/12/23 21:29:37 navaraf Exp $ */
#undef WIN32_LEAN_AND_MEAN
@ -799,7 +799,81 @@ NtGdiGetCharWidth32(HDC hDC,
UINT LastChar,
LPINT Buffer)
{
UNIMPLEMENTED;
LPINT SafeBuffer;
PDC dc;
PTEXTOBJ TextObj;
PFONTGDI FontGDI;
FT_Face face;
FT_CharMap charmap, found = NULL;
UINT i, glyph_index, BufferSize;
if (LastChar < FirstChar)
{
SetLastWin32Error(ERROR_INVALID_PARAMETER);
return FALSE;
}
BufferSize = (LastChar - FirstChar) * sizeof(INT);
SafeBuffer = ExAllocatePool(PagedPool, BufferSize);
if (SafeBuffer == NULL)
{
SetLastWin32Error(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
dc = DC_LockDc(hDC);
if (dc == NULL)
{
ExFreePool(SafeBuffer);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
TextObj = TEXTOBJ_LockText(dc->w.hFont);
DC_UnlockDc(hDC);
GetFontObjectsFromTextObj(TextObj, NULL, NULL, &FontGDI);
face = FontGDI->face;
if (face->charmap == NULL)
{
for (i = 0; i < face->num_charmaps; i++)
{
charmap = face->charmaps[i];
if (charmap->encoding != 0)
{
found = charmap;
break;
}
}
if (!found)
{
DPRINT1("WARNING: Could not find desired charmap!\n");
ExFreePool(SafeBuffer);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
FT_Set_Charmap(face, found);
}
FT_Set_Pixel_Sizes(face,
/* FIXME should set character height if neg */
(TextObj->logfont.lfHeight < 0 ?
- TextObj->logfont.lfHeight :
TextObj->logfont.lfHeight),
TextObj->logfont.lfWidth);
for (i = FirstChar; i <= LastChar; i++)
{
glyph_index = FT_Get_Char_Index(face, i);
FT_Load_Glyph(face, glyph_index, FT_LOAD_DEFAULT);
SafeBuffer[i] = face->glyph->advance.x >> 6;
}
TEXTOBJ_UnlockText(dc->w.hFont);
MmCopyToCaller(Buffer, SafeBuffer, BufferSize);
ExFreePool(SafeBuffer);
return TRUE;
}
BOOL