/*******************************************************************************
* ParseN
*
* Fatal error: return FALSE (PSDRV_GlyphName failure)
*
* Non-fatal error: leave metrics-> set to NULL
*
*/
static BOOL ParseN(LPSTR sz, OLD_AFMMETRICS *metrics)
{
CHAR save, *cp, *end_ptr;
cp = sz + 1;
while (isspace(*cp))
++cp;
end_ptr = cp;
while (*end_ptr != '\0' && !isspace(*end_ptr))
++end_ptr;
if (end_ptr == cp)
{
WARN("Error parsing glyph name '%s'\n", sz);
return TRUE;
}
save = *end_ptr;
*end_ptr = '\0';
metrics->N = PSDRV_GlyphName(cp);
if (metrics->N == NULL)
return FALSE;
*end_ptr = save;
return TRUE;
}
/*******************************************************************************
* ReadCharMetrics
*
* Reads metrics for each glyph in a TrueType font. Returns false for memory
* allocation or FreeType error; sets *p_metrics to NULL for non-fatal error.
*
*/
static BOOL ReadCharMetrics(FT_Face face, AFM *afm, AFMMETRICS **p_metrics)
{
FT_ULong charcode, index;
AFMMETRICS *metrics;
USHORT em_size = afm->WinMetrics.usUnitsPerEm;
for (charcode = 0, index = 0; charcode < 65536; ++charcode)
if (pFT_Get_Char_Index(face, charcode) != 0)
++index; /* count # of glyphs */
afm->NumofMetrics = index;
*p_metrics = metrics = HeapAlloc(PSDRV_Heap, 0, index * sizeof(*metrics));
if (metrics == NULL)
return FALSE;
for (charcode = 0, index = 0; charcode < 65536; ++charcode)
{
FT_UInt glyph_index = pFT_Get_Char_Index(face, charcode);
FT_Error error;
CHAR buffer[128]; /* for glyph names */
if (glyph_index == 0)
continue;
error = pFT_Load_Glyph(face, glyph_index, GLYPH_LOAD_FLAGS);
if (error != FT_Err_Ok)
{
ERR("%s returned %i\n", "FT_Load_Glyph", error);
goto cleanup;
}
error = pFT_Get_Glyph_Name(face, glyph_index, buffer, sizeof(buffer));
if (error != FT_Err_Ok)
{
ERR("%s returned %i\n", "FT_Get_Glyph_Name", error);
goto cleanup;
}
metrics[index].N = PSDRV_GlyphName(buffer);
if (metrics[index].N == NULL)
goto cleanup;
metrics[index].C = metrics[index].UV = charcode;
metrics[index].WX = PSUnits(face->glyph->metrics.horiAdvance, em_size);
++index;
}
if (afm->WinMetrics.sAvgCharWidth == 0)
afm->WinMetrics.sAvgCharWidth = PSDRV_CalcAvgCharWidth(afm);
return TRUE;
cleanup:
HeapFree(PSDRV_Heap, 0, metrics);
return FALSE;
}
