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[colr] Push clipbox or computed clip

This commit is contained in:
Behdad Esfahbod 2022-12-23 17:55:09 -07:00
parent 02684751bd
commit 73e48b9357
1 changed files with 56 additions and 3 deletions
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59
src/hb-ot-color-colr-table.hh
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@ -2014,7 +2014,7 @@ struct COLR
}
bool
paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data, unsigned int palette, hb_color_t foreground) const
paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data, unsigned int palette, hb_color_t foreground, bool clip = true) const
{
VarStoreInstancer instancer (this+varStore,
this+varIdxMap,
@ -2027,12 +2027,65 @@ struct COLR
if (paint)
{
// COLRv1 glyph
c.funcs->push_root_transform (c.data, font);
c.recurse (*paint);
VarStoreInstancer instancer (this+varStore,
this+varIdxMap,
hb_array (font->coords, font->num_coords));
bool is_bounded = true;
bool pop_clip_first = true;
if (clip)
{
hb_glyph_extents_t extents;
if ((this+clipList).get_extents (glyph,
&extents,
instancer))
{
c.funcs->push_root_transform (c.data, font);
c.funcs->push_clip_rectangle (c.data,
extents.x_bearing,
extents.y_bearing + extents.height,
extents.x_bearing + extents.width,
extents.y_bearing);
}
else
{
auto *extents_funcs = hb_paint_extents_get_funcs ();
hb_paint_extents_context_t extents_data;
paint_glyph (font, glyph,
extents_funcs, &extents_data,
palette, foreground,
false);
hb_extents_t extents = extents_data.get_extents ();
is_bounded = extents_data.is_bounded ();
c.funcs->push_clip_rectangle (c.data,
extents.xmin,
extents.ymin,
extents.xmax,
extents.ymax);
hb_paint_funcs_destroy (extents_funcs);
c.funcs->push_root_transform (c.data, font);
pop_clip_first = false;
}
}
if (is_bounded)
c.recurse (*paint);
if (clip && pop_clip_first)
c.funcs->pop_clip (c.data);
c.funcs->pop_root_transform (c.data);
if (clip && !pop_clip_first)
c.funcs->pop_clip (c.data);
return true;
}
}