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[varfonts] Reuse charset for named instances 

This didn't give me the speedup I was hoping for, though I do get around 15% for VotoSerifGX.
This commit is contained in:
Behdad Esfahbod 2017-09-27 16:26:47 -04:00
parent bf4d440e7f
commit 869dfe0bdc
1 changed files with 33 additions and 11 deletions
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44
src/fcfreetype.c
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@ -558,6 +558,9 @@ static const FcMacRomanFake fcMacRomanFake[] = {
static FcChar8 *
FcFontCapabilities(FT_Face face);
static int
FcFreeTypeSpacing (FT_Face face);
#define NUM_FC_MAC_ROMAN_FAKE (int) (sizeof (fcMacRomanFake) / sizeof (fcMacRomanFake[0]))
@ -1154,11 +1157,12 @@ static const FT_UShort nameid_order[] = {
};
#define NUM_NAMEID_ORDER (sizeof (nameid_order) / sizeof (nameid_order[0]))
FcPattern *
FcFreeTypeQueryFace (const FT_Face face,
const FcChar8 *file,
unsigned int id,
FcBlanks *blanks FC_UNUSED)
static FcPattern *
FcFreeTypeQueryFaceInternal (const FT_Face face,
const FcChar8 *file,
unsigned int id,
FcCharSet *cs)
{
FcPattern *pat;
int slant = -1;
@ -1169,7 +1173,6 @@ FcFreeTypeQueryFace (const FT_Face face,
FcBool variable_weight = FcFalse;
FcBool variable_width = FcFalse;
FcBool variable_size = FcFalse;
FcCharSet *cs;
FcLangSet *ls;
#if 0
FcChar8 *family = 0;
@ -1935,15 +1938,19 @@ FcFreeTypeQueryFace (const FT_Face face,
/*
* Compute the unicode coverage for the font
*/
cs = FcFreeTypeCharSetAndSpacing (face, blanks, &spacing);
if (cs)
cs = FcCharSetCopy (cs);
else
cs = FcFreeTypeCharSet (face, NULL);
if (!cs)
goto bail1;
/* The FcFreeTypeCharSetAndSpacing() chose the encoding; test it for symbol. */
/* The FcFreeTypeCharSet() chose the encoding; test it for symbol. */
symbol = face->charmap && face->charmap->encoding == FT_ENCODING_MS_SYMBOL;
if (!FcPatternAddBool (pat, FC_SYMBOL, symbol))
goto bail1;
spacing = FcFreeTypeSpacing (face);
#if HAVE_FT_GET_BDF_PROPERTY
/* For PCF fonts, override the computed spacing with the one from
the property */
@ -2048,10 +2055,19 @@ bail0:
return NULL;
}
FcPattern *
FcFreeTypeQueryFace (const FT_Face face,
const FcChar8 *file,
unsigned int id,
FcBlanks *blanks FC_UNUSED)
{
return FcFreeTypeQueryFaceInternal (face, file, id, NULL);
}
FcPattern *
FcFreeTypeQuery(const FcChar8 *file,
unsigned int id,
FcBlanks *blanks,
FcBlanks *blanks FC_UNUSED,
int *count)
{
FT_Face face;
@ -2067,7 +2083,7 @@ FcFreeTypeQuery(const FcChar8 *file,
if (count)
*count = face->num_faces;
pat = FcFreeTypeQueryFace (face, file, id, blanks);
pat = FcFreeTypeQueryFaceInternal (face, file, id, NULL);
FT_Done_Face (face);
bail:
@ -2084,6 +2100,7 @@ FcFreeTypeQueryAll(const FcChar8 *file,
{
FT_Face face = NULL;
FT_Library ftLibrary = NULL;
FcCharSet *cs = NULL;
FT_MM_Var *mm_var = NULL;
FcBool index_set = id != (unsigned int) -1;
unsigned int set_face_num = index_set ? id & 0xFFFF : 0;
@ -2103,6 +2120,7 @@ FcFreeTypeQueryAll(const FcChar8 *file,
if (FT_New_Face (ftLibrary, (const char *) file, face_num, &face))
goto bail;
cs = FcFreeTypeCharSet (face, blanks);
num_faces = face->num_faces;
num_instances = face->style_flags >> 16;
@ -2142,7 +2160,7 @@ FcFreeTypeQueryAll(const FcChar8 *file,
}
id = ((instance_num << 16) + face_num);
pat = FcFreeTypeQueryFace (face, (const FcChar8 *) file, id, blanks);
pat = FcFreeTypeQueryFaceInternal (face, (const FcChar8 *) file, id, cs);
if (pat)
{
@ -2161,6 +2179,8 @@ skip:
instance_num = 0x8000; /* variable font */
else
{
FcCharSetDestroy (cs);
cs = NULL;
FT_Done_Face (face);
face = NULL;
@ -2169,10 +2189,12 @@ skip:
if (FT_New_Face (ftLibrary, (const char *) file, face_num, &face))
break;
cs = FcFreeTypeCharSet (face, blanks);
}
} while (!err && (!index_set || face_num == set_face_num) && face_num < num_faces);
bail:
FcCharSetDestroy (cs);
if (face)
FT_Done_Face (face);
FT_Done_FreeType (ftLibrary);