[aat] Add Class subtable thingy

From old 'mort' table.
This commit is contained in:
Behdad Esfahbod 2018-01-10 11:09:53 +01:00
parent 71e0ed9cba
commit 80fd574320
1 changed files with 24 additions and 0 deletions

View File

@ -424,6 +424,30 @@ struct Lookup
}; };
struct Class
{
inline unsigned int get_class (hb_codepoint_t glyph_id) const
{
return firstGlyph <= glyph_id && glyph_id - firstGlyph < glyphCount ? classArrayZ[glyph_id - firstGlyph] : 1;
}
inline bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this) && classArrayZ.sanitize (c, glyphCount));
}
protected:
GlyphID firstGlyph; /* First glyph index included in the trimmed array. */
HBUINT16 glyphCount; /* Total number of glyphs (equivalent to the last
* glyph minus the value of firstGlyph plus 1). */
UnsizedArrayOf<HBUINT8>
classArrayZ; /* The class codes (indexed by glyph index minus
* firstGlyph). */
public:
DEFINE_SIZE_ARRAY (4, classArrayZ);
};
} /* namespace AAT */ } /* namespace AAT */