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wip: implement paint_glyph

This commit is contained in:
Matthias Clasen 2022-12-14 22:03:52 -05:00 committed by Behdad Esfahbod
parent efe13a191d
commit 8377341b28
4 changed files with 199 additions and 8 deletions
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1
src/harfbuzz-subset.cc
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@ -14,6 +14,7 @@
#include "hb-number.cc"
#include "hb-ot-cff1-table.cc"
#include "hb-ot-cff2-table.cc"
#include "hb-ot-color-colr-table.cc"
#include "hb-ot-color.cc"
#include "hb-ot-face.cc"
#include "hb-ot-font.cc"

1
src/harfbuzz.cc
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@ -19,6 +19,7 @@
#include "hb-number.cc"
#include "hb-ot-cff1-table.cc"
#include "hb-ot-cff2-table.cc"
#include "hb-ot-color-colr-table.cc"
#include "hb-ot-color.cc"
#include "hb-ot-face.cc"
#include "hb-ot-font.cc"

204
src/hb-ot-color-colr-table.hh
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@ -31,6 +31,7 @@
#include "hb-open-type.hh"
#include "hb-ot-layout-common.hh"
#include "hb-ot-var-common.hh"
#include "hb-paint.hh"
/*
* COLR -- Color
@ -45,6 +46,31 @@
namespace OT {
struct COLR;
struct hb_paint_context_t;
struct Paint;
static void paint_dispatch (const Paint *paint, hb_paint_context_t *c);
struct hb_paint_context_t {
const COLR* get_colr_table () const
{ return reinterpret_cast<const COLR *> (base); }
public:
const void *base;
hb_paint_funcs_t *funcs;
void *data;
hb_paint_context_t (const void *base_, hb_paint_funcs_t *funcs_, void *data_) :
base(base_),
funcs(funcs_),
data(data_)
{}
};
struct hb_colrv1_closure_context_t :
hb_dispatch_context_t<hb_colrv1_closure_context_t>
{
@ -182,6 +208,11 @@ struct Variable
return_trace (c->check_struct (this) && value.sanitize (c));
}
void paint_glyph (hb_paint_context_t *c) const
{
value.paint_glyph (c);
}
protected:
T value;
public:
@ -216,6 +247,11 @@ struct NoVariable
return_trace (c->check_struct (this) && value.sanitize (c));
}
void paint_glyph (hb_paint_context_t *c) const
{
value.paint_glyph (c);
}
T value;
public:
DEFINE_SIZE_STATIC (T::static_size);
@ -357,6 +393,14 @@ struct Affine2x3
return_trace (c->check_struct (this));
}
void paint_glyph (hb_paint_context_t *c) const
{
c->funcs->push_transform (c->data,
xx.to_float (), yx.to_float (),
xy.to_float (), yy.to_float (),
dx.to_float (), dy.to_float ());
}
F16DOT16 xx;
F16DOT16 yx;
F16DOT16 xy;
@ -388,6 +432,8 @@ struct PaintColrLayers
return_trace (c->check_struct (this));
}
void paint_glyph (hb_paint_context_t *c) const;
HBUINT8 format; /* format = 1 */
HBUINT8 numLayers;
HBUINT32 firstLayerIndex; /* index into COLRv1::layerList */
@ -415,6 +461,11 @@ struct PaintSolid
return_trace (c->check_struct (this));
}
void paint_glyph (hb_paint_context_t *c) const
{
c->funcs->solid (c->data, paletteIndex);
}
HBUINT8 format; /* format = 2(noVar) or 3(Var)*/
HBUINT16 paletteIndex;
F2DOT14 alpha;
@ -443,6 +494,11 @@ struct PaintLinearGradient
return_trace (c->check_struct (this) && colorLine.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
c->funcs->linear_gradient (c->data, nullptr, x0, y0, x1, y1, x2, y2);
}
HBUINT8 format; /* format = 4(noVar) or 5 (Var) */
Offset24To<ColorLine<Var>> colorLine; /* Offset (from beginning of PaintLinearGradient
* table) to ColorLine subtable. */
@ -477,6 +533,11 @@ struct PaintRadialGradient
return_trace (c->check_struct (this) && colorLine.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
c->funcs->radial_gradient (c->data, nullptr, x0, y0, radius0, x1, y1, radius1);
}
HBUINT8 format; /* format = 6(noVar) or 7 (Var) */
Offset24To<ColorLine<Var>> colorLine; /* Offset (from beginning of PaintRadialGradient
* table) to ColorLine subtable. */
@ -511,6 +572,11 @@ struct PaintSweepGradient
return_trace (c->check_struct (this) && colorLine.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
c->funcs->sweep_gradient (c->data, nullptr, centerX, centerY, startAngle, endAngle);
}
HBUINT8 format; /* format = 8(noVar) or 9 (Var) */
Offset24To<ColorLine<Var>> colorLine; /* Offset (from beginning of PaintSweepGradient
* table) to ColorLine subtable. */
@ -522,8 +588,6 @@ struct PaintSweepGradient
DEFINE_SIZE_STATIC (4 + 2 * FWORD::static_size + 2 * F2DOT14::static_size);
};
struct Paint;
// Paint a non-COLR glyph, filled as indicated by paint.
struct PaintGlyph
{
@ -548,6 +612,13 @@ struct PaintGlyph
return_trace (c->check_struct (this) && paint.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
c->funcs->push_clip (c->data, gid);
paint_dispatch (&(this+paint), c);
c->funcs->pop_clip (c->data);
}
HBUINT8 format; /* format = 10 */
Offset24To<Paint> paint; /* Offset (from beginning of PaintGlyph table) to Paint subtable. */
HBUINT16 gid;
@ -575,6 +646,12 @@ struct PaintColrGlyph
return_trace (c->check_struct (this));
}
void paint_glyph (hb_paint_context_t *c) const
{
// FIXME clipbox
//paint_glyph (c->data, gid);
}
HBUINT8 format; /* format = 11 */
HBUINT16 gid;
public:
@ -603,6 +680,13 @@ struct PaintTransform
transform.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
(this+transform).paint_glyph (c);
paint_dispatch (&(this+src), c);
c->funcs->pop_transform (c->data);
}
HBUINT8 format; /* format = 12(noVar) or 13 (Var) */
Offset24To<Paint> src; /* Offset (from beginning of PaintTransform table) to Paint subtable. */
Offset24To<Var<Affine2x3>> transform;
@ -629,6 +713,13 @@ struct PaintTranslate
return_trace (c->check_struct (this) && src.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
c->funcs->push_transform (c->data, 0, 0, 0, 0, 0, 0);
paint_dispatch (&(this+src), c);
c->funcs->pop_transform (c->data);
}
HBUINT8 format; /* format = 14(noVar) or 15 (Var) */
Offset24To<Paint> src; /* Offset (from beginning of PaintTranslate table) to Paint subtable. */
FWORD dx;
@ -656,6 +747,13 @@ struct PaintScale
return_trace (c->check_struct (this) && src.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
c->funcs->push_transform (c->data, scaleX, 0, 0, scaleY, 0, 0);
paint_dispatch (&(this+src), c);
c->funcs->pop_transform (c->data);
}
HBUINT8 format; /* format = 16 (noVar) or 17(Var) */
Offset24To<Paint> src; /* Offset (from beginning of PaintScale table) to Paint subtable. */
F2DOT14 scaleX;
@ -683,6 +781,17 @@ struct PaintScaleAroundCenter
return_trace (c->check_struct (this) && src.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
c->funcs->push_transform (c->data, 0, 0, 0, 0, centerX, centerY);
c->funcs->push_transform (c->data, scaleX, 0, 0, scaleY, 0, 0);
c->funcs->push_transform (c->data, 0, 0, 0, 0, - centerX, - centerY);
paint_dispatch (&(this+src), c);
c->funcs->pop_transform (c->data);
c->funcs->pop_transform (c->data);
c->funcs->pop_transform (c->data);
}
HBUINT8 format; /* format = 18 (noVar) or 19(Var) */
Offset24To<Paint> src; /* Offset (from beginning of PaintScaleAroundCenter table) to Paint subtable. */
F2DOT14 scaleX;
@ -712,6 +821,10 @@ struct PaintScaleUniform
return_trace (c->check_struct (this) && src.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
}
HBUINT8 format; /* format = 20 (noVar) or 21(Var) */
Offset24To<Paint> src; /* Offset (from beginning of PaintScaleUniform table) to Paint subtable. */
F2DOT14 scale;
@ -738,6 +851,10 @@ struct PaintScaleUniformAroundCenter
return_trace (c->check_struct (this) && src.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
}
HBUINT8 format; /* format = 22 (noVar) or 23(Var) */
Offset24To<Paint> src; /* Offset (from beginning of PaintScaleUniformAroundCenter table) to Paint subtable. */
F2DOT14 scale;
@ -766,6 +883,10 @@ struct PaintRotate
return_trace (c->check_struct (this) && src.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
}
HBUINT8 format; /* format = 24 (noVar) or 25(Var) */
Offset24To<Paint> src; /* Offset (from beginning of PaintRotate table) to Paint subtable. */
F2DOT14 angle;
@ -792,6 +913,10 @@ struct PaintRotateAroundCenter
return_trace (c->check_struct (this) && src.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
}
HBUINT8 format; /* format = 26 (noVar) or 27(Var) */
Offset24To<Paint> src; /* Offset (from beginning of PaintRotateAroundCenter table) to Paint subtable. */
F2DOT14 angle;
@ -820,6 +945,10 @@ struct PaintSkew
return_trace (c->check_struct (this) && src.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
}
HBUINT8 format; /* format = 28(noVar) or 29 (Var) */
Offset24To<Paint> src; /* Offset (from beginning of PaintSkew table) to Paint subtable. */
F2DOT14 xSkewAngle;
@ -847,6 +976,10 @@ struct PaintSkewAroundCenter
return_trace (c->check_struct (this) && src.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
}
HBUINT8 format; /* format = 30(noVar) or 31 (Var) */
Offset24To<Paint> src; /* Offset (from beginning of PaintSkewAroundCenter table) to Paint subtable. */
F2DOT14 xSkewAngle;
@ -879,6 +1012,16 @@ struct PaintComposite
backdrop.sanitize (c, this));
}
void paint_glyph (hb_paint_context_t *c) const
{
c->funcs->push_group (c->data);
paint_dispatch (&(this+backdrop), c);
c->funcs->push_group (c->data);
paint_dispatch (&(this+src), c);
c->funcs->pop_group_and_composite (c->data, (hb_paint_composite_mode_t) (int)mode);
c->funcs->pop_group_and_composite (c->data, HB_PAINT_COMPOSITE_MODE_SRC_OVER);
}
HBUINT8 format; /* format = 32 */
Offset24To<Paint> src; /* Offset (from beginning of PaintComposite table) to source Paint subtable. */
CompositeMode mode; /* If mode is unrecognized use COMPOSITE_CLEAR */
@ -979,11 +1122,6 @@ struct ClipBox
return true;
}
void paint_glyph (hb_font_t *font, hb_codepoint_t glyph,
hb_paint_funcs_t *funcs, void *paint_data) const
{
}
protected:
union {
HBUINT8 format; /* Format identifier */
@ -1195,6 +1333,45 @@ struct Paint
}
}
void paint_glyph (hb_paint_context_t *c) const
{
switch (u.format) {
case 1: u.paintformat1.paint_glyph (c); break;
case 2: u.paintformat2.paint_glyph (c); break;
case 3: u.paintformat3.paint_glyph (c); break;
case 4: u.paintformat4.paint_glyph (c); break;
case 5: u.paintformat5.paint_glyph (c); break;
case 6: u.paintformat6.paint_glyph (c); break;
case 7: u.paintformat7.paint_glyph (c); break;
case 8: u.paintformat8.paint_glyph (c); break;
case 9: u.paintformat9.paint_glyph (c); break;
case 10: u.paintformat10.paint_glyph (c); break;
case 11: u.paintformat11.paint_glyph (c); break;
case 12: u.paintformat12.paint_glyph (c); break;
case 13: u.paintformat13.paint_glyph (c); break;
case 14: u.paintformat14.paint_glyph (c); break;
case 15: u.paintformat15.paint_glyph (c); break;
case 16: u.paintformat16.paint_glyph (c); break;
case 17: u.paintformat17.paint_glyph (c); break;
case 18: u.paintformat18.paint_glyph (c); break;
case 19: u.paintformat19.paint_glyph (c); break;
case 20: u.paintformat20.paint_glyph (c); break;
case 21: u.paintformat21.paint_glyph (c); break;
case 22: u.paintformat22.paint_glyph (c); break;
case 23: u.paintformat23.paint_glyph (c); break;
case 24: u.paintformat24.paint_glyph (c); break;
case 25: u.paintformat25.paint_glyph (c); break;
case 26: u.paintformat26.paint_glyph (c); break;
case 27: u.paintformat27.paint_glyph (c); break;
case 28: u.paintformat28.paint_glyph (c); break;
case 29: u.paintformat29.paint_glyph (c); break;
case 30: u.paintformat30.paint_glyph (c); break;
case 31: u.paintformat31.paint_glyph (c); break;
case 32: u.paintformat32.paint_glyph (c); break;
default: assert (0);
}
}
protected:
union {
HBUINT8 format;
@ -1618,6 +1795,12 @@ struct COLR
void
paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data) const
{
hb_paint_context_t c (this, funcs, data);
const BaseGlyphList &baseglyph_paintrecords = this+baseGlyphList;
const BaseGlyphPaintRecord* record = get_base_glyph_paintrecord (glyph);
const Paint &paint = &baseglyph_paintrecords+record->paint;
paint.paint_glyph (&c);
}
protected:
@ -1642,7 +1825,12 @@ struct COLR_accelerator_t : COLR::accelerator_t {
COLR_accelerator_t (hb_face_t *face) : COLR::accelerator_t (face) {}
};
static void
paint_dispatch (const Paint *paint, hb_paint_context_t *c)
{
paint->paint_glyph (c);
}
} /* namespace OT */
#endif /* HB_OT_COLOR_COLR_TABLE_HH */

1
src/meson.build
View File

@ -75,6 +75,7 @@ hb_base_sources = files(
'hb-ot-cmap-table.hh',
'hb-ot-color-cbdt-table.hh',
'hb-ot-color-colr-table.hh',
'hb-ot-color-colr-table.cc',
'hb-ot-color-cpal-table.hh',
'hb-ot-color-sbix-table.hh',
'hb-ot-color-svg-table.hh',