walkero
/
harfbuzz
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[ft] Start of a COLRv1 renderer

This commit is contained in:
Behdad Esfahbod 2022-12-22 17:36:54 -07:00
parent e2546f5ab0
commit ac2682c610
1 changed files with 161 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

164
src/hb-ft-colr.hh
View File

@ -29,6 +29,127 @@
#ifndef HB_NO_PAINT
static void
_hb_ft_paint (FT_OpaquePaint opaque_paint,
const hb_ft_font_t *ft_font,
hb_font_t *font,
hb_paint_funcs_t *paint_funcs, void *paint_data,
FT_Color *palette,
hb_color_t foreground)
{
FT_Face ft_face = ft_font->ft_face;
FT_COLR_Paint paint;
if (!FT_Get_Paint (ft_face, opaque_paint, &paint))
return;
#define RECURSE(other_paint) \
_hb_ft_paint (other_paint, ft_font, font, paint_funcs, paint_data, palette, foreground)
switch (paint.format)
{
case FT_COLR_PAINTFORMAT_COLR_LAYERS:
{
FT_OpaquePaint other_paint = {0};
while (FT_Get_Paint_Layers (ft_face,
&paint.u.colr_layers.layer_iterator,
&other_paint))
{
paint_funcs->push_group (paint_data);
RECURSE (other_paint);
paint_funcs->pop_group (paint_data, HB_PAINT_COMPOSITE_MODE_SRC_OVER);
}
}
break;
case FT_COLR_PAINTFORMAT_SOLID:
{
bool is_foreground = paint.u.solid.color.palette_index == 0xFFFF;
hb_color_t color;
if (is_foreground)
color = HB_COLOR (hb_color_get_blue (foreground),
hb_color_get_green (foreground),
hb_color_get_red (foreground),
(hb_color_get_alpha (foreground) * paint.u.solid.color.alpha) >> 14);
else
{
FT_Color ft_color = palette[paint.u.solid.color.palette_index];
color = HB_COLOR (ft_color.blue,
ft_color.green,
ft_color.red,
ft_color.alpha);
}
paint_funcs->color (paint_data, is_foreground, color);
}
break;
case FT_COLR_PAINTFORMAT_LINEAR_GRADIENT: break;
case FT_COLR_PAINTFORMAT_RADIAL_GRADIENT: break;
case FT_COLR_PAINTFORMAT_SWEEP_GRADIENT: break;
case FT_COLR_PAINTFORMAT_GLYPH:
{
//paint_funcs->push_inverse_root_transform (paint_data, font);
ft_font->lock.unlock ();
paint_funcs->push_clip_glyph (paint_data, paint.u.glyph.glyphID, font);
ft_font->lock.lock ();
RECURSE (paint.u.glyph.paint);
paint_funcs->pop_clip (paint_data);
//paint_funcs->pop_inverse_root_transform (paint_data);
}
break;
case FT_COLR_PAINTFORMAT_COLR_GLYPH: break;
case FT_COLR_PAINTFORMAT_TRANSFORM:
{
paint_funcs->push_transform (paint_data,
paint.u.transform.affine.xx / 65536.f,
paint.u.transform.affine.yx / 65536.f,
paint.u.transform.affine.xy / 65536.f,
paint.u.transform.affine.yy / 65536.f,
paint.u.transform.affine.dx / 65536.f,
paint.u.transform.affine.dy / 65536.f);
RECURSE (paint.u.transform.paint);
paint_funcs->pop_transform (paint_data);
}
break;
case FT_COLR_PAINTFORMAT_TRANSLATE:
{
paint_funcs->push_transform (paint_data,
0.f, 0.f, 0.f, 0.f,
paint.u.translate.dx / 65536.f,
paint.u.translate.dy / 65536.f);
RECURSE (paint.u.translate.paint);
paint_funcs->pop_transform (paint_data);
}
break;
case FT_COLR_PAINTFORMAT_SCALE:
{
paint_funcs->push_transform (paint_data,
1.f, 0.f, 0.f, 1.f,
-paint.u.scale.center_x / 65536.f,
-paint.u.scale.center_y / 65536.f);
paint_funcs->push_transform (paint_data,
paint.u.scale.scale_y / 65536.f,
0.f, 0.f,
paint.u.scale.scale_x / 65536.f,
0.f, 0.f);
paint_funcs->push_transform (paint_data,
1.f, 0.f, 0.f, 1.f,
+paint.u.scale.center_x / 65536.f,
+paint.u.scale.center_y / 65536.f);
RECURSE (paint.u.scale.paint);
paint_funcs->pop_transform (paint_data);
paint_funcs->pop_transform (paint_data);
paint_funcs->pop_transform (paint_data);
}
break;
case FT_COLR_PAINTFORMAT_ROTATE: break;
case FT_COLR_PAINTFORMAT_SKEW: break;
case FT_COLR_PAINTFORMAT_COMPOSITE: break;
case FT_COLR_PAINT_FORMAT_MAX: break;
case FT_COLR_PAINTFORMAT_UNSUPPORTED: break;
}
#undef RECURSE
}
static bool
hb_ft_paint_glyph_colr (hb_font_t *font,
void *font_data,
@ -43,7 +164,6 @@ hb_ft_paint_glyph_colr (hb_font_t *font,
/* Face is locked. */
/* COLRv0 */
FT_Error error;
FT_Color* palette;
FT_LayerIterator iterator;
@ -53,9 +173,47 @@ hb_ft_paint_glyph_colr (hb_font_t *font,
FT_UInt layer_color_index;
error = FT_Palette_Select(ft_face, palette_index, &palette);
if ( error )
if (error)
palette = NULL;
/* COLRv1 */
FT_OpaquePaint paint = {0};
if (FT_Get_Color_Glyph_Paint (ft_face, gid,
FT_COLOR_NO_ROOT_TRANSFORM,
&paint))
{
FT_ClipBox clip_box;
bool pop_clip = false;
if (FT_Get_Color_Glyph_ClipBox (ft_face, gid,
&clip_box))
{
/* TODO mult's like hb-ft. */
paint_funcs->push_clip_rectangle (paint_data,
clip_box.bottom_left.x,
clip_box.bottom_left.y,
clip_box.top_right.x,
clip_box.top_right.y);
#if 0
FT_Vector bottom_left;
FT_Vector top_left;
FT_Vector top_right;
FT_Vector bottom_right;
#endif
}
_hb_ft_paint (paint,
ft_font,
font,
paint_funcs, paint_data,
palette, foreground);
if (pop_clip)
paint_funcs->pop_clip (paint_data);
return true;
}
/* COLRv0 */
iterator.p = NULL;
have_layers = FT_Get_Color_Glyph_Layer(ft_face,
gid,
@ -82,9 +240,9 @@ hb_ft_paint_glyph_colr (hb_font_t *font,
ft_font->lock.unlock ();
paint_funcs->push_clip_glyph (paint_data, layer_glyph_index, font);
ft_font->lock.lock ();
paint_funcs->color (paint_data, is_foreground, color);
paint_funcs->pop_clip (paint_data);
ft_font->lock.lock ();
} while (FT_Get_Color_Glyph_Layer(ft_face,
gid,