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[varfonts] Skip named-instance that is equivalent to base font

This commit is contained in:
Behdad Esfahbod 2017-09-20 16:21:28 -07:00
parent 8183194ae3
commit be735d6a68
1 changed files with 36 additions and 5 deletions
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41
src/fcfreetype.c
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@ -2089,7 +2089,7 @@ FcFreeTypeQueryAll(const FcChar8 *file,
unsigned int num_faces = 0;
unsigned int num_instances = 0;
unsigned int ret = 0;
int err = 0;
int err = 0;
if (FT_Init_FreeType (&ftLibrary))
return 0;
@ -2104,17 +2104,48 @@ FcFreeTypeQueryAll(const FcChar8 *file,
num_faces = face->num_faces;
num_instances = face->style_flags >> 16;
pat = FcFreeTypeQueryFace (face, (const FcChar8 *) file, id, blanks);
FT_Done_Face (face);
if (pat)
{
ret++;
if (!set || ! FcFontSetAdd (set, pat))
FcPatternDestroy (pat);
/* Skip named-instance that coincides with base instance. */
if (!index_set && instance_num && instance_num != 0x8000)
{
unsigned int i;
FT_MM_Var *mm_var = NULL;
FT_Fixed *coords = NULL;
if (FT_Get_MM_Var (face, &mm_var) ||
!(coords = (FT_Fixed *) calloc (mm_var->num_axis, sizeof (FT_Fixed))) ||
FT_Get_Var_Blend_Coordinates (face, mm_var->num_axis, coords))
{
goto skip;
}
for (i = 0; i < mm_var->num_axis; i++)
if (coords[i])
goto good;
skip:
free (coords);
FcPatternDestroy (pat);
pat = NULL;
good:
;
}
if (pat)
{
ret++;
if (!set || ! FcFontSetAdd (set, pat))
FcPatternDestroy (pat);
}
}
else if (instance_num != 0x8000)
err = 1;
FT_Done_Face (face);
face = NULL;
if (!set_instance_num && instance_num < num_instances)
instance_num++;
else if (!set_instance_num && instance_num == num_instances)