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[glyf] Add CoordSetter

This commit is contained in:
Behdad Esfahbod 2022-08-22 09:49:30 -06:00
parent e66d02126e
commit 1024a013fd
1 changed files with 31 additions and 1 deletions
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32
src/OT/glyf/Glyph.hh
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@ -15,6 +15,34 @@ struct glyf_accelerator_t;
namespace glyf_impl { namespace glyf_impl {
struct CoordSetter
{
CoordSetter (hb_font_t *font) :
font (font),
old_coords (font->coords, font->num_coords),
new_coords (old_coords)
{
font->coords = new_coords.arrayZ;
font->num_coords = new_coords.length;
}
~CoordSetter ()
{
font->coords = old_coords.arrayZ;
font->num_coords = old_coords.length;
}
int& operator [] (unsigned idx)
{
if (new_coords.length < idx + 1)
new_coords.resize (idx + 1);
return new_coords[idx];
}
hb_font_t *font;
hb_array_t<int> old_coords;
hb_vector_t<int> new_coords;
};
#ifndef HB_GLYF_MAX_POINTS #ifndef HB_GLYF_MAX_POINTS
#define HB_GLYF_MAX_POINTS 10000 #define HB_GLYF_MAX_POINTS 10000
@ -32,7 +60,7 @@ enum phantom_point_index_t
struct Glyph struct Glyph
{ {
enum glyph_type_t { EMPTY, SIMPLE, COMPOSITE }; enum glyph_type_t { EMPTY, SIMPLE, COMPOSITE, VAR_COMPOSITE };
public: public:
composite_iter_t get_composite_iterator () const composite_iter_t get_composite_iterator () const
@ -288,6 +316,7 @@ struct Glyph
for (auto &item : get_composite_iterator ()) for (auto &item : get_composite_iterator ())
{ {
comp_points.reset (); comp_points.reset ();
if (unlikely (!glyf_accelerator.glyph_for_gid (item.get_gid ()) if (unlikely (!glyf_accelerator.glyph_for_gid (item.get_gid ())
.get_points (font, glyf_accelerator, comp_points, .get_points (font, glyf_accelerator, comp_points,
deltas, shift_points_hori, use_my_metrics, phantom_only, depth + 1))) deltas, shift_points_hori, use_my_metrics, phantom_only, depth + 1)))
@ -368,6 +397,7 @@ struct Glyph
int num_contours = header->numberOfContours; int num_contours = header->numberOfContours;
if (unlikely (num_contours == 0)) type = EMPTY; if (unlikely (num_contours == 0)) type = EMPTY;
else if (num_contours > 0) type = SIMPLE; else if (num_contours > 0) type = SIMPLE;
else if (num_contours == -2) type = VAR_COMPOSITE;
else type = COMPOSITE; /* negative numbers */ else type = COMPOSITE; /* negative numbers */
} }