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[kern] Add kerning driver to TT kern table

This commit is contained in:
Behdad Esfahbod 2018-10-08 23:26:26 -04:00
parent 683c3a9533
commit 3c23ff9b7c
2 changed files with 18 additions and 3 deletions
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19
src/hb-ot-kern-table.hh
View File

@ -35,7 +35,7 @@
template <typename Driver>
struct hb_kern_machine_t
{
hb_kern_machine_t (Driver &driver_) : driver (driver_) {}
hb_kern_machine_t (const Driver &driver_) : driver (driver_) {}
inline void kern (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
@ -96,7 +96,7 @@ struct hb_kern_machine_t
}
}
Driver &driver;
const Driver &driver;
};
@ -447,6 +447,21 @@ struct kern
inline int get_h_kerning (hb_codepoint_t left, hb_codepoint_t right) const
{ return table->get_h_kerning (left, right, table_length); }
inline int get_kerning (hb_codepoint_t first, hb_codepoint_t second) const
{ return get_h_kerning (first, second); }
inline void apply (hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer) const
{
if (!HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction))
return;
hb_kern_machine_t<accelerator_t> machine (*this);
machine.kern (plan, font, buffer);
}
private:
hb_blob_t *blob;
const kern *table;

2
src/hb-ot-shape-fallback.cc
View File

@ -447,7 +447,7 @@ _hb_ot_shape_fallback_kern (const hb_ot_shape_plan_t *plan,
hb_buffer_t *buffer) :
font (font_), direction (buffer->props.direction) {}
hb_position_t get_kerning (hb_codepoint_t first, hb_codepoint_t second)
hb_position_t get_kerning (hb_codepoint_t first, hb_codepoint_t second) const
{
hb_position_t kern = 0;
font->get_glyph_kerning_for_direction (first, second,