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[coretext-font] Implement get_glyph_extents

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This commit is contained in:
Behdad Esfahbod 2024-10-10 14:15:50 -06:00
parent 8db2997e4e
commit b5e9f2cb2b
1 changed files with 16 additions and 2 deletions
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18
src/hb-coretext-font.cc
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@ -149,8 +149,22 @@ hb_coretext_get_glyph_extents (hb_font_t *font,
hb_glyph_extents_t *extents,
void *user_data HB_UNUSED)
{
// TODO
return false;
CTFontRef ct_font = (CTFontRef) font_data;
CGFloat ct_font_size = CTFontGetSize (ct_font);
CGFloat x_mult = (CGFloat) font->x_scale / ct_font_size;
CGFloat y_mult = (CGFloat) font->y_scale / ct_font_size;
CGGlyph glyphs[1] = { glyph };
CGRect bounds = ::CTFontGetBoundingRectsForGlyphs(ct_font,
kCTFontDefaultOrientation, glyphs, NULL, 1);
extents->x_bearing = round (bounds.origin.x * x_mult);
extents->y_bearing = round (bounds.origin.y * y_mult);
extents->width = round (bounds.size.width * x_mult);
extents->height = round (bounds.size.height * y_mult);
return true;
}
static hb_bool_t