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[subset] Fix ClassDefFormat1 subsetting

This commit is contained in:
Behdad Esfahbod 2018-12-13 18:32:04 -05:00
parent 1b6d0c44b3
commit 7ee6128902
1 changed files with 8 additions and 5 deletions
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13
src/hb-ot-layout-common.hh
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@ -1241,13 +1241,16 @@ struct ClassDefFormat1
inline bool subset (hb_subset_context_t *c) const
{
TRACE_SUBSET (this);
const hb_set_t &glyphset = *c->plan->glyphset;
const hb_map_t &glyph_map = *c->plan->glyph_map;
hb_vector_t<GlyphID> glyphs;
hb_codepoint_t first_glyph = startGlyph;
unsigned int count = classValue.len;
glyphs.resize (count);
for (unsigned i = 0; i < count; i++)
glyphs[i].set (glyph_map[first_glyph + i]);
hb_codepoint_t start = startGlyph;
hb_codepoint_t end = start + classValue.len;
for (hb_codepoint_t g = start; g < end; g++)
{
if (!glyphset.has (g)) continue;
glyphs.push()->set (glyph_map[g]);
}
c->serializer->err (glyphs.in_error ());
Supplier<GlyphID> glyphs_supplier (glyphs);