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[layout] Move code around

This commit is contained in:
Behdad Esfahbod 2022-09-01 13:39:26 -06:00
parent 4bf9621113
commit 8e88653f05
1 changed files with 53 additions and 51 deletions
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104
src/hb-ot-layout.cc
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@ -1710,57 +1710,6 @@ hb_ot_layout_get_size_params (hb_face_t *face,
return false;
}
struct hb_position_single_dispatch_t :
hb_dispatch_context_t<hb_position_single_dispatch_t, bool>
{
static return_t default_return_value () { return false; }
bool stop_sublookup_iteration (return_t r) const { return r; }
private:
template <typename T, typename ...Ts> auto
_dispatch (const T &obj, hb_priority<1>, Ts&&... ds) HB_AUTO_RETURN
( obj.position_single (std::forward<Ts> (ds)...) )
template <typename T, typename ...Ts> auto
_dispatch (const T &obj, hb_priority<0>, Ts&&... ds) HB_AUTO_RETURN
( default_return_value () )
public:
template <typename T, typename ...Ts> auto
dispatch (const T &obj, Ts&&... ds) HB_AUTO_RETURN
( _dispatch (obj, hb_prioritize, std::forward<Ts> (ds)...) )
};
hb_position_t
hb_ot_layout_get_optical_bound (hb_font_t *font,
unsigned lookup_index,
hb_direction_t direction,
hb_codepoint_t glyph)
{
const OT::PosLookup &lookup = font->face->table.GPOS->table->get_lookup (lookup_index);
hb_glyph_position_t pos = {0};
hb_position_single_dispatch_t c;
lookup.dispatch (&c, font, direction, glyph, pos);
hb_position_t ret = 0;
switch (direction)
{
case HB_DIRECTION_LTR:
ret = pos.x_offset;
break;
case HB_DIRECTION_RTL:
ret = pos.x_advance - pos.x_offset;
break;
case HB_DIRECTION_TTB:
ret = pos.y_offset;
break;
case HB_DIRECTION_BTT:
ret = pos.y_advance - pos.y_offset;
break;
case HB_DIRECTION_INVALID:
default:
break;
}
return ret;
}
/**
* hb_ot_layout_feature_get_name_ids:
@ -2426,4 +2375,57 @@ hb_ot_layout_lookup_get_glyph_alternates (hb_face_t *face,
return ret;
}
struct hb_position_single_dispatch_t :
hb_dispatch_context_t<hb_position_single_dispatch_t, bool>
{
static return_t default_return_value () { return false; }
bool stop_sublookup_iteration (return_t r) const { return r; }
private:
template <typename T, typename ...Ts> auto
_dispatch (const T &obj, hb_priority<1>, Ts&&... ds) HB_AUTO_RETURN
( obj.position_single (std::forward<Ts> (ds)...) )
template <typename T, typename ...Ts> auto
_dispatch (const T &obj, hb_priority<0>, Ts&&... ds) HB_AUTO_RETURN
( default_return_value () )
public:
template <typename T, typename ...Ts> auto
dispatch (const T &obj, Ts&&... ds) HB_AUTO_RETURN
( _dispatch (obj, hb_prioritize, std::forward<Ts> (ds)...) )
};
hb_position_t
hb_ot_layout_get_optical_bound (hb_font_t *font,
unsigned lookup_index,
hb_direction_t direction,
hb_codepoint_t glyph)
{
const OT::PosLookup &lookup = font->face->table.GPOS->table->get_lookup (lookup_index);
hb_glyph_position_t pos = {0};
hb_position_single_dispatch_t c;
lookup.dispatch (&c, font, direction, glyph, pos);
hb_position_t ret = 0;
switch (direction)
{
case HB_DIRECTION_LTR:
ret = pos.x_offset;
break;
case HB_DIRECTION_RTL:
ret = pos.x_advance - pos.x_offset;
break;
case HB_DIRECTION_TTB:
ret = pos.y_offset;
break;
case HB_DIRECTION_BTT:
ret = pos.y_advance - pos.y_offset;
break;
case HB_DIRECTION_INVALID:
default:
break;
}
return ret;
}
#endif