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[ft] Implement paint_glyph() for outline glyphs

This commit is contained in:
Behdad Esfahbod 2022-12-22 10:51:26 -07:00
parent 91c880503e
commit bb807f47d2
1 changed files with 45 additions and 1 deletions
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46
src/hb-ft.cc
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@ -33,12 +33,13 @@
#include "hb-ft.h"
#include "hb-cache.hh"
#include "hb-draw.hh"
#include "hb-font.hh"
#include "hb-machinery.hh"
#include "hb-cache.hh"
#include "hb-ot-os2-table.hh"
#include "hb-ot-shaper-arabic-pua.hh"
#include "hb-paint.hh"
#include FT_ADVANCES_H
#include FT_MULTIPLE_MASTERS_H
@ -811,6 +812,45 @@ hb_ft_draw_glyph (hb_font_t *font HB_UNUSED,
}
#endif
#ifndef HB_NO_PAINT
static void
hb_ft_paint_glyph (hb_font_t *font,
void *font_data,
hb_codepoint_t gid,
hb_paint_funcs_t *paint_funcs, void *paint_data,
unsigned int palette,
hb_color_t foreground,
void *user_data)
{
const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
FT_Glyph_Format format;
/* Release lock before calling into callbacks, such that
* eg. draw API can call back into the face.*/
{
hb_lock_t lock (ft_font->lock);
FT_Face ft_face = ft_font->ft_face;
if (unlikely (FT_Load_Glyph (ft_face, gid, ft_font->load_flags)))
return;
format = ft_face->glyph->format;
}
if (format == FT_GLYPH_FORMAT_OUTLINE)
{
paint_funcs->push_clip_glyph (paint_data, gid, font);
paint_funcs->color (paint_data, true, foreground);
paint_funcs->pop_clip (paint_data);
return;
}
/* TODO Support image, COLRv0/1. */
}
#endif
static inline void free_static_ft_funcs ();
@ -847,6 +887,10 @@ static struct hb_ft_font_funcs_lazy_loader_t : hb_font_funcs_lazy_loader_t<hb_ft
hb_font_funcs_set_draw_glyph_func (funcs, hb_ft_draw_glyph, nullptr, nullptr);
#endif
#ifndef HB_NO_PAINT
hb_font_funcs_set_paint_glyph_func (funcs, hb_ft_paint_glyph, nullptr, nullptr);
#endif
hb_font_funcs_make_immutable (funcs);
hb_atexit (free_static_ft_funcs);