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[HB] Simplify MarkMark

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This commit is contained in:
Behdad Esfahbod 2009-08-14 17:53:31 -04:00
parent 815a73e420
commit dfa54f4440
1 changed files with 16 additions and 13 deletions
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29
src/hb-ot-layout-gpos-private.hh
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@ -1168,14 +1168,17 @@ struct MarkLigPos
ASSERT_SIZE (MarkLigPos, 2);
struct Mark2Array
struct AnchorMatrix
{
friend struct MarkMarkPosFormat1;
inline const Anchor& get_anchor (unsigned int row, unsigned int col, unsigned int cols) const {
if (HB_UNLIKELY (row >= rows || col >= cols)) return Null(Anchor);
return this+matrix[row * cols + col];
}
inline bool sanitize (SANITIZE_ARG_DEF, unsigned int cols) {
SANITIZE_DEBUG ();
if (!SANITIZE_SELF ()) return false;
unsigned int count = cols * len;
unsigned int count = rows * cols;
if (!SANITIZE_ARRAY (matrix, sizeof (matrix[0]), count)) return false;
for (unsigned int i = 0; i < count; i++)
if (!SANITIZE_THIS (matrix[i])) return false;
@ -1183,14 +1186,16 @@ struct Mark2Array
}
private:
USHORT len; /* Number of rows */
USHORT rows; /* Number of rows */
OffsetTo<Anchor>
matrix[]; /* Matrix of offsets to Anchor tables--
* from beginning of Mark2Array table--
* mark2-major--in order of
* Mark2Coverage Index--, mark1-minor--
* ordered by class--zero-based. */
* from beginning of AnchorMatrix table */
};
ASSERT_SIZE (AnchorMatrix, 2);
/* mark2-major--in order of Mark2Coverage Index--,
* mark1-minor--ordered by class--zero-based. */
typedef AnchorMatrix Mark2Array;
ASSERT_SIZE (Mark2Array, 2);
struct MarkMarkPosFormat1
@ -1231,16 +1236,14 @@ struct MarkMarkPosFormat1
const Mark2Array& mark2_array = this+mark2Array;
unsigned int mark1_class = mark1_array.get_class (mark1_index);
const Anchor& mark1_anchor = mark1_array.get_anchor (mark1_index);
if (HB_UNLIKELY (mark1_class >= classCount || mark2_index >= mark2_array.len))
return false;
const Anchor& mark1_anchor = mark1_array.get_anchor (mark1_index);
const Anchor& mark2_anchor = mark2_array.get_anchor (mark2_index, mark1_class, classCount);
hb_position_t mark1_x, mark1_y, mark2_x, mark2_y;
mark1_anchor.get_anchor (context, IN_CURGLYPH (), &mark1_x, &mark1_y);
unsigned int index = mark2_index * classCount + mark1_class;
(&mark2_array+mark2_array.matrix[index]).get_anchor (context, IN_GLYPH (j), &mark2_x, &mark2_y);
mark2_anchor.get_anchor (context, IN_GLYPH (j), &mark2_x, &mark2_y);
hb_internal_glyph_position_t *o = POSITION (buffer->in_pos);
o->x_pos = mark2_x - mark1_x;