Guesstimate Windows font metrics for Type 1 fonts.
This commit is contained in:
Ian Pilcher
Alexandre Julliard
parent
4323004bf1
commit
c6eeda464e
|
|
@ -27,6 +27,38 @@ FONTFAMILY *PSDRV_AFMFontList = NULL;
|
|||
/* qsort/bsearch callback functions */
|
||||
typedef int (*compar_callback_fn) (const void *, const void *);
|
||||
|
||||
/*******************************************************************************
|
||||
* IsWinANSI
|
||||
*
|
||||
* Checks whether Unicode value is part of Microsoft code page 1252
|
||||
*
|
||||
*/
|
||||
static const INT ansiChars[21] =
|
||||
{
|
||||
0x0152, 0x0153, 0x0160, 0x0161, 0x0178, 0x017d, 0x017e, 0x0192, 0x02c6,
|
||||
0x02c9, 0x02dc, 0x03bc, 0x2013, 0x2014, 0x2026, 0x2030, 0x2039, 0x203a,
|
||||
0x20ac, 0x2122, 0x2219
|
||||
};
|
||||
|
||||
static int cmpUV(const INT *a, const INT *b)
|
||||
{
|
||||
return *a - *b;
|
||||
}
|
||||
|
||||
inline static BOOL IsWinANSI(INT uv)
|
||||
{
|
||||
if ((0x0020 <= uv && uv <= 0x007e) || (0x00a0 <= uv && uv <= 0x00ff) ||
|
||||
(0x2018 <= uv && uv <= 0x201a) || (0x201c <= uv && uv <= 0x201e) ||
|
||||
(0x2020 <= uv && uv <= 2022))
|
||||
return TRUE;
|
||||
|
||||
if (bsearch(&uv, ansiChars, 21, sizeof(INT),
|
||||
(compar_callback_fn)cmpUV) != NULL)
|
||||
return TRUE;
|
||||
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
* CheckMetrics
|
||||
*
|
||||
|
|
@ -750,6 +782,98 @@ static BOOL SortFontMetrics()
|
|||
return TRUE;
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
* CalcWindowsMetrics
|
||||
*
|
||||
* Calculates several Windows-specific font metrics for each font. Relies on
|
||||
* the fact that AFMs are allocated with HEAP_ZERO_MEMORY to distinguish
|
||||
* TrueType fonts (when implemented), which already have these filled in.
|
||||
*
|
||||
*/
|
||||
static VOID CalcWindowsMetrics()
|
||||
{
|
||||
FONTFAMILY *family = PSDRV_AFMFontList;
|
||||
|
||||
while (family != NULL)
|
||||
{
|
||||
AFMLISTENTRY *afmle = family->afmlist;
|
||||
|
||||
while (afmle != NULL)
|
||||
{
|
||||
WINMETRICS wm;
|
||||
AFM *afm = afmle->afm; /* should always be valid */
|
||||
INT i;
|
||||
|
||||
if (afm->WinMetrics.usUnitsPerEm != 0)
|
||||
continue; /* TrueType font */
|
||||
|
||||
wm.usUnitsPerEm = 1000; /* for PostScript fonts */
|
||||
wm.sTypoAscender = (SHORT)(afm->Ascender + 0.5);
|
||||
wm.sTypoDescender = (SHORT)(afm->Descender + 0.5);
|
||||
|
||||
wm.sTypoLineGap = 1200 - (wm.sTypoAscender - wm.sTypoDescender);
|
||||
if (wm.sTypoLineGap < 0)
|
||||
wm.sTypoLineGap = 0;
|
||||
|
||||
wm.usWinAscent = 0;
|
||||
wm.usWinDescent = 0;
|
||||
|
||||
for (i = 0; i < afm->NumofMetrics; ++i)
|
||||
{
|
||||
if (IsWinANSI(afm->Metrics[i].UV) == FALSE)
|
||||
continue;
|
||||
|
||||
if (afm->Metrics[i].B.ury > 0)
|
||||
{
|
||||
USHORT ascent = (USHORT)(afm->Metrics[i].B.ury + 0.5);
|
||||
|
||||
if (ascent > wm.usWinAscent)
|
||||
wm.usWinAscent = ascent;
|
||||
}
|
||||
|
||||
if (afm->Metrics[i].B.lly < 0)
|
||||
{
|
||||
USHORT descent = (USHORT)(-(afm->Metrics[i].B.lly) + 0.5);
|
||||
|
||||
if (descent > wm.usWinDescent)
|
||||
wm.usWinDescent = descent;
|
||||
}
|
||||
}
|
||||
|
||||
if (wm.usWinAscent == 0 && afm->FontBBox.ury > 0)
|
||||
wm.usWinAscent = (USHORT)(afm->FontBBox.ury + 0.5);
|
||||
|
||||
if (wm.usWinDescent == 0 && afm->FontBBox.lly < 0)
|
||||
wm.usWinDescent = (USHORT)(-(afm->FontBBox.lly) + 0.5);
|
||||
|
||||
wm.sAscender = wm.usWinAscent;
|
||||
wm.sDescender = -(wm.usWinDescent);
|
||||
|
||||
wm.sLineGap = 1150 - (wm.sAscender - wm.sDescender);
|
||||
if (wm.sLineGap < 0)
|
||||
wm.sLineGap = 0;
|
||||
|
||||
TRACE("Windows metrics for '%s':\n", afm->FullName);
|
||||
TRACE("\tsAscender = %i\n", wm.sAscender);
|
||||
TRACE("\tsDescender = %i\n", wm.sDescender);
|
||||
TRACE("\tsLineGap = %i\n", wm.sLineGap);
|
||||
TRACE("\tusUnitsPerEm = %u\n", wm.usUnitsPerEm);
|
||||
TRACE("\tsTypoAscender = %i\n", wm.sTypoAscender);
|
||||
TRACE("\tsTypoDescender = %i\n", wm.sTypoDescender);
|
||||
TRACE("\tsTypoLineGap = %i\n", wm.sTypoLineGap);
|
||||
TRACE("\tusWinAscent = %u\n", wm.usWinAscent);
|
||||
TRACE("\tusWinDescent = %u\n", wm.usWinDescent);
|
||||
|
||||
afm->WinMetrics = wm;
|
||||
|
||||
afmle = afmle->next;
|
||||
}
|
||||
|
||||
family = family ->next;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/***********************************************************
|
||||
*
|
||||
* PSDRV_GetFontMetrics
|
||||
|
|
@ -844,6 +968,7 @@ BOOL PSDRV_GetFontMetrics(void)
|
|||
PSDRV_IndexGlyphList();
|
||||
if (SortFontMetrics() == FALSE)
|
||||
return FALSE;
|
||||
CalcWindowsMetrics();
|
||||
PSDRV_DumpFontList();
|
||||
return TRUE;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -53,12 +53,15 @@ typedef struct _tagAFMMETRICS {
|
|||
} AFMMETRICS;
|
||||
|
||||
typedef struct {
|
||||
USHORT usUnitsPerEm; /* 1000 for Type 1 fonts */
|
||||
SHORT sTypoAscender; /* AFM Ascender */
|
||||
SHORT sTypoDescender; /* AFM Descender */
|
||||
SHORT sTypoLineGap; /* guess for Type 1 fonts */
|
||||
USHORT usWinAscent;
|
||||
USHORT usWinDescent;
|
||||
USHORT usUnitsPerEm; /* head:unitsPerEm */
|
||||
SHORT sAscender; /* hhea:Ascender */
|
||||
SHORT sDescender; /* hhea:Descender */
|
||||
SHORT sLineGap; /* hhea:LineGap */
|
||||
SHORT sTypoAscender; /* OS/2:sTypoAscender */
|
||||
SHORT sTypoDescender; /* OS/2:sTypoDescender */
|
||||
SHORT sTypoLineGap; /* OS/2:sTypeLineGap */
|
||||
USHORT usWinAscent; /* OS/2:usWinAscent */
|
||||
USHORT usWinDescent; /* OS/2:usWinDescent */
|
||||
} WINMETRICS;
|
||||
|
||||
typedef struct _tagAFM {
|
||||
|
|
|
|||
Loading…
Reference in New Issue