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Port Wine GetCharWidth32A.

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svn path=/trunk/; revision=20958
This commit is contained in:
James Tabor 2006-01-21 00:52:08 +00:00
parent 21e636d088
commit c8fb29311e
1 changed files with 96 additions and 2 deletions
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98
reactos/lib/gdi32/objects/font.c
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@ -15,6 +15,73 @@
#define INITIAL_FAMILY_COUNT 64
/***********************************************************************
* FONT_mbtowc
*
* Returns a Unicode translation of str using the charset of the
* currently selected font in hdc. If count is -1 then str is assumed
* to be '\0' terminated, otherwise it contains the number of bytes to
* convert. If plenW is non-NULL, on return it will point to the
* number of WCHARs that have been written. If pCP is non-NULL, on
* return it will point to the codepage used in the conversion. The
* caller should free the returned LPWSTR from the process heap
* itself.
*/
static LPWSTR FONT_mbtowc(HDC hdc, LPCSTR str, INT count, INT *plenW, UINT *pCP)
{
UINT cp = CP_ACP;
INT lenW;
LPWSTR strW;
CHARSETINFO csi;
int charset = GetTextCharset(hdc);
/* Hmm, nicely designed api this one! */
if(NtGdiTranslateCharsetInfo((PDWORD)charset, &csi, TCI_SRCCHARSET))
cp = csi.ciACP;
else {
switch(charset) {
case OEM_CHARSET:
cp = GetOEMCP();
break;
case DEFAULT_CHARSET:
cp = GetACP();
break;
/* case VISCII_CHARSET:
case TCVN_CHARSET:
case KOI8_CHARSET:
case ISO3_CHARSET:
case ISO4_CHARSET:
case ISO10_CHARSET:
case CELTIC_CHARSET:*/
/* FIXME: These have no place here, but because x11drv
enumerates fonts with these (made up) charsets some apps
might use them and then the FIXME below would become
annoying. Now we could pick the intended codepage for
each of these, but since it's broken anyway we'll just
use CP_ACP and hope it'll go away...
*/
/* cp = CP_ACP;
break;*/
default:
DPRINT1("Can't find codepage for charset %d\n", charset);
break;
}
}
DPRINT("charset %d => cp %d\n", charset, cp);
if(count == -1) count = strlen(str);
lenW = MultiByteToWideChar(cp, 0, str, count, NULL, 0);
strW = HeapAlloc(GetProcessHeap(), 0, lenW*sizeof(WCHAR));
MultiByteToWideChar(cp, 0, str, count, strW, lenW);
if(plenW) *plenW = lenW;
if(pCP) *pCP = cp;
return strW;
}
static BOOL FASTCALL
MetricsCharConvert(WCHAR w, UCHAR *b)
{
@ -347,8 +414,34 @@ GetCharWidth32A(
LPINT lpBuffer
)
{
/* FIXME what to do with iFirstChar and iLastChar ??? */
return NtGdiGetCharWidth32 ( hdc, iFirstChar, iLastChar, lpBuffer );
INT i, wlen, count = (INT)(iLastChar - iFirstChar + 1);
LPSTR str;
LPWSTR wstr;
BOOL ret = TRUE;
if(count <= 0) return FALSE;
str = HeapAlloc(GetProcessHeap(), 0, count);
for(i = 0; i < count; i++)
str[i] = (BYTE)(iFirstChar + i);
wstr = FONT_mbtowc(hdc, str, count, &wlen, NULL);
for(i = 0; i < wlen; i++)
{
/* FIXME should be NtGdiGetCharWidthW */
if(!NtGdiGetCharWidth32(hdc, wstr[i], wstr[i], lpBuffer))
{
ret = FALSE;
break;
}
lpBuffer++;
}
HeapFree(GetProcessHeap(), 0, str);
HeapFree(GetProcessHeap(), 0, wstr);
return ret;
}
@ -364,6 +457,7 @@ GetCharWidthW (
LPINT lpBuffer
)
{
/* FIXME should be NtGdiGetCharWidthW */
return NtGdiGetCharWidth32 ( hdc, iFirstChar, iLastChar, lpBuffer );
}