{
hb_blob_t *os2_blob = OT::Sanitizer<OT::os2>::sanitize (face->reference_table (os2_tag));
const OT::os2 *os2 = OT::Sanitizer<OT::os2>::lock_instance (os2_blob);
- this->ascender = os2->sTypoAscender;
- this->descender = os2->sTypoDescender;
- this->line_gap = os2->sTypoLineGap;
+#define USE_TYPO_METRICS (1u<<7)
+ if (0 != (os2->fsSelection & USE_TYPO_METRICS))
+ {
+ this->ascender = os2->sTypoAscender;
+ this->descender = os2->sTypoDescender;
+ this->line_gap = os2->sTypoLineGap;
+ got_font_extents = (this->ascender | this->descender) != 0;
+ }
hb_blob_destroy (os2_blob);
- got_font_extents = (this->ascender | this->descender) != 0;
}
hb_blob_t *_hea_blob = OT::Sanitizer<OT::_hea>::sanitize (face->reference_table (_hea_tag));