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[GSUB] PairPosFormat2

This commit is contained in:
Behdad Esfahbod 2009-05-19 22:30:09 -04:00
parent b24ecbadf4
commit 70632add33
1 changed files with 38 additions and 5 deletions
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43
src/hb-ot-layout-gpos-private.h
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@ -397,8 +397,8 @@ struct PairPosFormat1 {
const PairSet &pair_set = this+pairSet[index]; const PairSet &pair_set = this+pairSet[index];
unsigned int len1 = valueFormat1.get_len (), unsigned int len1 = valueFormat1.get_len ();
len2 = valueFormat2.get_len (); unsigned int len2 = valueFormat2.get_len ();
unsigned int record_len = 1 + len1 + len2; unsigned int record_len = 1 + len1 + len2;
unsigned int count = pair_set.len; unsigned int count = pair_set.len;
@ -440,11 +440,44 @@ struct PairPosFormat2 {
friend struct PairPos; friend struct PairPos;
private: private:
inline bool apply (APPLY_ARG_DEF) const { inline bool apply (APPLY_ARG_DEF) const
/* TODO */ {
return false; unsigned int end = MIN (buffer->in_length, buffer->in_pos + context_length);
if (HB_UNLIKELY (buffer->in_pos + 2 > end))
return false;
unsigned int index = (this+coverage) (IN_CURGLYPH ());
if (HB_LIKELY (index == NOT_COVERED))
return false;
unsigned int j = buffer->in_pos + 1;
while (!_hb_ot_layout_check_glyph_property (layout, IN_ITEM (j), lookup_flag, &property)) {
if (HB_UNLIKELY (j == end))
return false;
j++;
}
unsigned int len1 = valueFormat1.get_len ();
unsigned int len2 = valueFormat2.get_len ();
unsigned int record_len = len1 + len2;
unsigned int klass1 = (this+classDef1) (IN_CURGLYPH ());
unsigned int klass2 = (this+classDef2) (IN_GLYPH (j));
if (HB_UNLIKELY (klass1 >= class1Count || klass2 >= class2Count))
return false;
const Value *v = values + record_len * (klass1 * class2Count + klass2);
valueFormat1.apply_value (layout, (const char *) this, v, CURPOSITION ());
valueFormat2.apply_value (layout, (const char *) this, v + len1, POSITION (j));
if (len2)
j++;
buffer->in_pos = j;
return true;
} }
private: private:
USHORT format; /* Format identifier--format = 2 */ USHORT format; /* Format identifier--format = 2 */
OffsetTo<Coverage> OffsetTo<Coverage>