walkero
/
harfbuzz
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[ankr] Implement table access

This commit is contained in:
Behdad Esfahbod 2018-10-10 23:07:03 -04:00
parent 7281cb3eeb
commit 947962a287
1 changed files with 16 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
src/hb-aat-layout-ankr-table.hh
View File

@ -45,16 +45,32 @@ struct Anchor
return_trace (c->check_struct (this));
}
public:
FWORD xCoordinate;
FWORD yCoordinate;
public:
DEFINE_SIZE_STATIC (4);
};
typedef LArrayOf<Anchor> GlyphAnchors;
struct ankr
{
static const hb_tag_t tableTag = HB_AAT_TAG_ankr;
inline const Anchor &get_anchor (hb_codepoint_t glyph_id,
unsigned int i,
unsigned int num_glyphs,
const char *end) const
{
unsigned int offset = (this+lookupTable).get_value_or_null (glyph_id, num_glyphs);
const GlyphAnchors &anchors = StructAtOffset<GlyphAnchors> (&(this+anchorData), offset);
/* TODO Use sanitizer; to avoid overflows and more. */
if (unlikely ((const char *) &anchors + anchors.get_size () > end))
return Null(Anchor);
return anchors[i];
}
inline bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);