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wip: hb-paint

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pull/3938/head
Matthias Clasen 2 years ago committed by Behdad Esfahbod
parent 0066e824f0
commit 83d0a49f71
8 changed files with 723 additions and 0 deletions
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  1. 1
      src/harfbuzz-subset.cc
  2. 1
      src/harfbuzz.cc
  3. 5
      src/hb-ot-color-colr-table.hh
  4. 311
      src/hb-paint.cc
  5. 276
      src/hb-paint.h
  6. 125
      src/hb-paint.hh
  7. 1
      src/hb.h
  8. 3
      src/meson.build

1
src/harfbuzz-subset.cc
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@ -40,6 +40,7 @@
#include "hb-ot-shaper-vowel-constraints.cc"
#include "hb-ot-tag.cc"
#include "hb-ot-var.cc"
#include "hb-paint.cc"
#include "hb-set.cc"
#include "hb-shape-plan.cc"
#include "hb-shape.cc"

1
src/harfbuzz.cc
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@ -45,6 +45,7 @@
#include "hb-ot-shaper-vowel-constraints.cc"
#include "hb-ot-tag.cc"
#include "hb-ot-var.cc"
#include "hb-paint.cc"
#include "hb-set.cc"
#include "hb-shape-plan.cc"
#include "hb-shape.cc"

5
src/hb-ot-color-colr-table.hh
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@ -979,6 +979,11 @@ 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 */

311
src/hb-paint.cc
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@ -0,0 +1,311 @@
/*
* Copyright © 2022 Matthias Clasen
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#include "hb.hh"
#ifndef HB_NO_PAINT
#include "hb-paint.hh"
static void
hb_paint_push_transform_nil (hb_paint_funcs_t *funcs HB_UNUSED, void *paint_data HB_UNUSED,
float xx HB_UNUSED, float xy HB_UNUSED,
float yx HB_UNUSED, float yy HB_UNUSED,
float x0 HB_UNUSED, float y0 HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_paint_pop_transform_nil (hb_paint_funcs_t *funcs HB_UNUSED, void *paint_data HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_paint_push_clip_nil (hb_paint_funcs_t *funcs HB_UNUSED, void *paint_data HB_UNUSED,
hb_codepoint_t glyph HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_paint_pop_clip_nil (hb_paint_funcs_t *funcs HB_UNUSED, void *paint_data HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_paint_solid_nil (hb_paint_funcs_t *funcs HB_UNUSED, void *paint_data HB_UNUSED,
unsigned int color_index HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_paint_linear_gradient_nil (hb_paint_funcs_t *funcs HB_UNUSED, void *paint_data HB_UNUSED,
hb_color_line_t *color_line HB_UNUSED,
hb_position_t x0, hb_position_t y0 HB_UNUSED,
hb_position_t x1, hb_position_t y1 HB_UNUSED,
hb_position_t x2, hb_position_t y2 HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_paint_radial_gradient_nil (hb_paint_funcs_t *funcs HB_UNUSED, void *paint_data HB_UNUSED,
hb_color_line_t *color_line HB_UNUSED,
hb_position_t x0, hb_position_t y0 HB_UNUSED,
float r0 HB_UNUSED,
hb_position_t x1 HB_UNUSED, hb_position_t y1 HB_UNUSED,
float r1 HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_paint_sweep_gradient_nil (hb_paint_funcs_t *funcs HB_UNUSED, void *paint_data HB_UNUSED,
hb_color_line_t *color_line HB_UNUSED,
hb_position_t x0, hb_position_t y0 HB_UNUSED,
float start_angle HB_UNUSED,
float end_angle HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_paint_push_group_nil (hb_paint_funcs_t *funcs HB_UNUSED, void *paint_data HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_paint_pop_group_and_composite_nil (hb_paint_funcs_t *funcs HB_UNUSED, void *paint_data HB_UNUSED,
hb_paint_composite_mode_t mode,
void *user_data HB_UNUSED) {}
static bool
_hb_paint_funcs_set_preamble (hb_paint_funcs_t *funcs,
bool func_is_null,
void **user_data,
hb_destroy_func_t *destroy)
{
if (hb_object_is_immutable (funcs))
{
if (*destroy)
(*destroy) (*user_data);
return false;
}
if (func_is_null)
{
if (*destroy)
(*destroy) (*user_data);
*destroy = nullptr;
*user_data = nullptr;
}
return true;
}
static bool
_hb_paint_funcs_set_middle (hb_paint_funcs_t *funcs,
void *user_data,
hb_destroy_func_t destroy)
{
if (user_data && !funcs->user_data)
{
funcs->user_data = (decltype (funcs->user_data)) hb_calloc (1, sizeof (*funcs->user_data));
if (unlikely (!funcs->user_data))
goto fail;
}
if (destroy && !funcs->destroy)
{
funcs->destroy = (decltype (funcs->destroy)) hb_calloc (1, sizeof (*funcs->destroy));
if (unlikely (!funcs->destroy))
goto fail;
}
return true;
fail:
if (destroy)
(destroy) (user_data);
return false;
}
#define HB_PAINT_FUNC_IMPLEMENT(name) \
\
void \
hb_paint_funcs_set_##name##_func (hb_paint_funcs_t *funcs, \
hb_paint_##name##_func_t func, \
void *user_data, \
hb_destroy_func_t destroy) \
{ \
if (!_hb_paint_funcs_set_preamble (funcs, !func, &user_data, &destroy)) \
return; \
\
if (funcs->destroy && funcs->destroy->name) \
funcs->destroy->name (!funcs->user_data ? nullptr : funcs->user_data->name);\
\
if (!_hb_paint_funcs_set_middle (funcs, user_data, destroy)) \
return; \
\
if (func) \
funcs->func.name = func; \
else \
funcs->func.name = hb_paint_##name##_nil; \
\
if (funcs->user_data) \
funcs->user_data->name = user_data; \
if (funcs->destroy) \
funcs->destroy->name = destroy; \
}
HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_PAINT_FUNC_IMPLEMENT
hb_paint_funcs_t *
hb_paint_funcs_create ()
{
hb_paint_funcs_t *funcs;
if (unlikely (!(funcs = hb_object_create<hb_paint_funcs_t> ())))
return const_cast<hb_paint_funcs_t *> (&Null (hb_paint_funcs_t));
funcs->func = Null (hb_paint_funcs_t).func;
return funcs;
}
DEFINE_NULL_INSTANCE (hb_paint_funcs_t) =
{
HB_OBJECT_HEADER_STATIC,
{
#define HB_PAINT_FUNC_IMPLEMENT(name) hb_paint_##name##_nil,
HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_PAINT_FUNC_IMPLEMENT
}
};
hb_paint_funcs_t *
hb_paint_funcs_reference (hb_paint_funcs_t *funcs)
{
return hb_object_reference (funcs);
}
void
hb_paint_funcs_destroy (hb_paint_funcs_t *funcs)
{
if (!hb_object_destroy (funcs)) return;
if (funcs->destroy)
{
#define HB_PAINT_FUNC_IMPLEMENT(name) \
if (funcs->destroy->name) funcs->destroy->name (!funcs->user_data ? nullptr : funcs->user_data->name);
HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_PAINT_FUNC_IMPLEMENT
}
hb_free (funcs->destroy);
hb_free (funcs->user_data);
hb_free (funcs);
}
void
hb_paint_funcs_make_immutable (hb_paint_funcs_t *funcs)
{
if (hb_object_is_immutable (funcs))
return;
hb_object_make_immutable (funcs);
}
hb_bool_t
hb_paint_funcs_is_immutable (hb_paint_funcs_t *funcs)
{
return hb_object_is_immutable (funcs);
}
void
hb_paint_push_transform (hb_paint_funcs_t *funcs, void *paint_data,
float xx, float xy,
float yx, float yy,
float x0, float y0)
{
funcs->push_transform (paint_data, xx, xy, yx, yy, x0, y0);
}
void
hb_paint_pop_transform (hb_paint_funcs_t *funcs, void *paint_data)
{
funcs->pop_transform (paint_data);
}
void
hb_paint_push_clip (hb_paint_funcs_t *funcs, void *paint_data,
hb_codepoint_t glyph)
{
funcs->push_clip (paint_data, glyph);
}
void
hb_paint_pop_clip (hb_paint_funcs_t *funcs, void *paint_data)
{
funcs->pop_clip (paint_data);
}
void
hb_paint_solid (hb_paint_funcs_t *funcs, void *paint_data,
unsigned int color_index)
{
funcs->solid (paint_data, color_index);
}
void
hb_paint_linear_gradient (hb_paint_funcs_t *funcs, void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
hb_position_t x1, hb_position_t y1,
hb_position_t x2, hb_position_t y2)
{
funcs->linear_gradient (paint_data, color_line, x0, y0, x1, y1, x2, y2);
}
void
hb_paint_radial_gradient (hb_paint_funcs_t *funcs, void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
float r0,
hb_position_t x1, hb_position_t y1,
float r1)
{
funcs->radial_gradient (paint_data, color_line, x0, y0, r0, y1, x1, r1);
}
void
hb_paint_sweep_gradient (hb_paint_funcs_t *funcs, void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
float start_angle, float end_angle)
{
funcs->sweep_gradient (paint_data, color_line, x0, y0, start_angle, end_angle);
}
void
hb_paint_push_group (hb_paint_funcs_t *funcs, void *paint_data)
{
funcs->push_group (paint_data);
}
void
hb_paint_pop_group_and_composite (hb_paint_funcs_t *funcs, void *paint_data,
hb_paint_composite_mode_t mode)
{
funcs->pop_group_and_composite (paint_data, mode);
}
#endif

276
src/hb-paint.h
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@ -0,0 +1,276 @@
/*
* Copyright © 2022 Matthias Clasen
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR)
#error "Include <hb.h> instead."
#endif
#ifndef HB_PAINT_H
#define HB_PAINT_H
#include "hb.h"
HB_BEGIN_DECLS
typedef struct hb_paint_funcs_t hb_paint_funcs_t;
HB_EXTERN hb_paint_funcs_t *
hb_paint_funcs_create ();
HB_EXTERN hb_paint_funcs_t *
hb_paint_funcs_reference (hb_paint_funcs_t *funcs);
HB_EXTERN void
hb_paint_funcs_destroy (hb_paint_funcs_t *funcs);
HB_EXTERN void
hb_paint_funcs_make_immutable (hb_paint_funcs_t *funcs);
HB_EXTERN hb_bool_t
hb_paint_funcs_is_immutable (hb_paint_funcs_t *funcs);
typedef void (*hb_paint_push_transform_func_t) (hb_paint_funcs_t *funcs,
void *paint_data,
float xx, float xy,
float yx, float yy,
float x0, float y0,
void *user_data);
typedef void (*hb_paint_pop_transform_func_t) (hb_paint_funcs_t *funcs,
void *paint_data,
void *user_data);
typedef void (*hb_paint_push_clip_func_t) (hb_paint_funcs_t *funcs,
void *paint_data,
hb_codepoint_t glyph,
void *user_data);
typedef void (*hb_paint_pop_clip_func_t) (hb_paint_funcs_t *funcs,
void *paint_data,
void *user_data);
typedef void (*hb_paint_solid_func_t) (hb_paint_funcs_t *funcs,
void *paint_data,
unsigned int color_index,
void *user_data);
typedef struct hb_color_line_t hb_color_line_t;
typedef struct {
float offset;
unsigned int color_index;
} hb_color_stop_t;
HB_EXTERN unsigned int
hb_color_line_get_color_stops (hb_color_line_t color_line,
unsigned int start,
unsigned int count,
hb_color_stop_t *color_stops);
typedef enum {
HB_PAINT_EXTEND_PAD,
HB_PAINT_EXTEND_REPEAT,
HB_PAINT_EXTEND_REFLECT
} hb_paint_extend_t;
HB_EXTERN hb_paint_extend_t
hb_color_line_get_extend (hb_color_line_t *color_line);
typedef void (*hb_paint_linear_gradient_func_t) (hb_paint_funcs_t *funcs,
void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
hb_position_t x1, hb_position_t y1,
hb_position_t x2, hb_position_t y2,
void *user_data);
typedef void (*hb_paint_radial_gradient_func_t) (hb_paint_funcs_t *funcs,
void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
float r0,
hb_position_t x1, hb_position_t y1,
float r1,
void *user_data);
typedef void (*hb_paint_sweep_gradient_func_t) (hb_paint_funcs_t *funcs,
void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
float start_angle,
float end_angle,
void *user_data);
typedef enum {
HB_PAINT_COMPOSITE_MODE_CLEAR,
HB_PAINT_COMPOSITE_MODE_SRC,
HB_PAINT_COMPOSITE_MODE_DEST,
HB_PAINT_COMPOSITE_MODE_SRC_OVER,
HB_PAINT_COMPOSITE_MODE_DEST_OVER,
HB_PAINT_COMPOSITE_MODE_SRC_IN,
HB_PAINT_COMPOSITE_MODE_DEST_IN,
HB_PAINT_COMPOSITE_MODE_SRC_OUT,
HB_PAINT_COMPOSITE_MODE_DEST_OUT,
HB_PAINT_COMPOSITE_MODE_SRC_ATOP,
HB_PAINT_COMPOSITE_MODE_DEST_ATOP,
HB_PAINT_COMPOSITE_MODE_XOR,
HB_PAINT_COMPOSITE_MODE_PLUS,
HB_PAINT_COMPOSITE_MODE_SCREEN,
HB_PAINT_COMPOSITE_MODE_OVERLAY,
HB_PAINT_COMPOSITE_MODE_DARKEN,
HB_PAINT_COMPOSITE_MODE_LIGHTEN,
HB_PAINT_COMPOSITE_MODE_COLOR_DODGE,
HB_PAINT_COMPOSITE_MODE_COLOR_BURN,
HB_PAINT_COMPOSITE_MODE_HARD_LIGHT,
HB_PAINT_COMPOSITE_MODE_SOFT_LIGHT,
HB_PAINT_COMPOSITE_MODE_DIFFERENCE,
HB_PAINT_COMPOSITE_MODE_EXCLUSION,
HB_PAINT_COMPOSITE_MODE_MULTIPLY,
HB_PAINT_COMPOSITE_MODE_HSL_HUE,
HB_PAINT_COMPOSITE_MODE_HSL_SATURATION,
HB_PAINT_COMPOSITE_MODE_HSL_COLOR,
HB_PAINT_COMPOSITE_MODE_HSL_LUMINOSITY,
} hb_paint_composite_mode_t;
typedef void (*hb_paint_push_group_func_t) (hb_paint_funcs_t *funcs,
void *paint_data,
void *user_data);
typedef void (*hb_paint_pop_group_and_composite_func_t) (hb_paint_funcs_t *funcs,
void *paint_data,
hb_paint_composite_mode_t mode,
void *user_data);
HB_EXTERN void
hb_paint_funcs_set_push_transform_func (hb_paint_funcs_t *funcs,
hb_paint_push_transform_func_t func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN void
hb_paint_funcs_set_pop_transform_func (hb_paint_funcs_t *funcs,
hb_paint_pop_transform_func_t func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN void
hb_paint_funcs_set_push_clip_func (hb_paint_funcs_t *funcs,
hb_paint_push_clip_func_t func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN void
hb_paint_funcs_set_pop_clip_func (hb_paint_funcs_t *funcs,
hb_paint_pop_clip_func_t func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN void
hb_paint_funcs_set_solid_func (hb_paint_funcs_t *funcs,
hb_paint_solid_func_t func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN void
hb_paint_funcs_set_linear_gradient_func (hb_paint_funcs_t *funcs,
hb_paint_linear_gradient_func_t func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN void
hb_paint_funcs_set_radial_gradient_func (hb_paint_funcs_t *funcs,
hb_paint_radial_gradient_func_t func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN void
hb_paint_funcs_set_sweep_gradient_func (hb_paint_funcs_t *funcs,
hb_paint_sweep_gradient_func_t func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN void
hb_paint_funcs_set_push_group_func (hb_paint_funcs_t *funcs,
hb_paint_push_group_func_t func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN void
hb_paint_funcs_set_pop_group_and_composite_func (hb_paint_funcs_t *funcs,
hb_paint_pop_group_and_composite_func_t func,
void *user_data,
hb_destroy_func_t destroy);
HB_EXTERN void
hb_paint_push_transform (hb_paint_funcs_t *funcs, void *paint_data,
float xx, float xy,
float yx, float yy,
float x0, float y0);
HB_EXTERN void
hb_paint_pop_transform (hb_paint_funcs_t *funcs, void *paint_data);
HB_EXTERN void
hb_paint_push_clip (hb_paint_funcs_t *funcs, void *paint_data,
hb_codepoint_t glyph);
HB_EXTERN void
hb_paint_pop_clip (hb_paint_funcs_t *funcs, void *paint_data);
HB_EXTERN void
hb_paint_solid (hb_paint_funcs_t *funcs, void *paint_data,
unsigned int color_index);
HB_EXTERN void
hb_paint_linear_gradient (hb_paint_funcs_t *funcs, void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
hb_position_t x1, hb_position_t y1,
hb_position_t x2, hb_position_t y2);
HB_EXTERN void
hb_paint_radial_gradient (hb_paint_funcs_t *funcs, void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
float r0,
hb_position_t x1, hb_position_t y1,
float r1);
HB_EXTERN void
hb_paint_sweep_gradient (hb_paint_funcs_t *funcs, void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
float start_angle, float end_angle);
HB_EXTERN void
hb_paint_push_group (hb_paint_funcs_t *funcs, void *paint_data);
HB_EXTERN void
hb_paint_pop_group_and_composite (hb_paint_funcs_t *funcs, void *paint_data,
hb_paint_composite_mode_t mode);
HB_END_DECLS
#endif /* HB_PAINT_H */

125
src/hb-paint.hh
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/*
* Copyright © 2022 Matthias Clasen
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#ifndef HB_PAINT_HH
#define HB_PAINT_HH
#include "hb.hh"
#define HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS \
HB_PAINT_FUNC_IMPLEMENT (push_transform) \
HB_PAINT_FUNC_IMPLEMENT (pop_transform) \
HB_PAINT_FUNC_IMPLEMENT (push_clip) \
HB_PAINT_FUNC_IMPLEMENT (pop_clip) \
HB_PAINT_FUNC_IMPLEMENT (solid) \
HB_PAINT_FUNC_IMPLEMENT (linear_gradient) \
HB_PAINT_FUNC_IMPLEMENT (radial_gradient) \
HB_PAINT_FUNC_IMPLEMENT (sweep_gradient) \
HB_PAINT_FUNC_IMPLEMENT (push_group) \
HB_PAINT_FUNC_IMPLEMENT (pop_group_and_composite) \
/* ^--- Add new callbacks here */
struct hb_paint_funcs_t
{
hb_object_header_t header;
struct {
#define HB_PAINT_FUNC_IMPLEMENT(name) hb_paint_##name##_func_t name;
HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_PAINT_FUNC_IMPLEMENT
} func;
struct {
#define HB_PAINT_FUNC_IMPLEMENT(name) void *name;
HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_PAINT_FUNC_IMPLEMENT
} *user_data;
struct {
#define HB_PAINT_FUNC_IMPLEMENT(name) hb_destroy_func_t name;
HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_PAINT_FUNC_IMPLEMENT
} *destroy;
void push_transform (void *paint_data,
float xx, float xy,
float yx, float yy,
float x0, float y0)
{ func.push_transform (this, paint_data,
xx, xy, yx, yy, x0, y0,
!user_data ? nullptr : user_data->push_transform); }
void pop_transform (void *paint_data)
{ func.pop_transform (this, paint_data,
!user_data ? nullptr : user_data->pop_transform); }
void push_clip (void *paint_data,
hb_codepoint_t glyph)
{ func.push_clip (this, paint_data,
glyph,
!user_data ? nullptr : user_data->push_clip); }
void pop_clip (void *paint_data)
{ func.pop_clip (this, paint_data,
!user_data ? nullptr : user_data->pop_clip); }
void solid (void *paint_data,
unsigned int color_index)
{ func.solid (this, paint_data,
color_index,
!user_data ? nullptr : user_data->solid); }
void linear_gradient (void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
hb_position_t x1, hb_position_t y1,
hb_position_t x2, hb_position_t y2)
{ func.linear_gradient (this, paint_data,
color_line, x0, y0, x1, y1, x2, y2,
!user_data ? nullptr : user_data->linear_gradient); }
void radial_gradient (void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
float r0,
hb_position_t x1, hb_position_t y1,
float r1)
{ func.radial_gradient (this, paint_data,
color_line, x0, y0, r0, x1, y1, r1,
!user_data ? nullptr : user_data->radial_gradient); }
void sweep_gradient (void *paint_data,
hb_color_line_t *color_line,
hb_position_t x0, hb_position_t y0,
float start_angle,
float end_angle)
{ func.sweep_gradient (this, paint_data,
color_line, x0, y0, start_angle, end_angle,
!user_data ? nullptr : user_data->sweep_gradient); }
void push_group (void *paint_data)
{ func.push_group (this, paint_data,
!user_data ? nullptr : user_data->push_group); }
void pop_group_and_composite (void *paint_data,
hb_paint_composite_mode_t mode)
{ func.pop_group_and_composite (this, paint_data,
mode,
!user_data ? nullptr : user_data->pop_group_and_composite); }
};
DECLARE_NULL_INSTANCE (hb_paint_funcs_t);
#endif /* HB_PAINT_HH */

1
src/hb.h
Unescape View File

@ -33,6 +33,7 @@
#include "hb-common.h"
#include "hb-deprecated.h"
#include "hb-draw.h"
#include "hb-paint.h"
#include "hb-face.h"
#include "hb-font.h"
#include "hb-map.h"

3
src/meson.build
Unescape View File

@ -44,6 +44,8 @@ hb_base_sources = files(
'hb-dispatch.hh',
'hb-draw.cc',
'hb-draw.hh',
'hb-paint.cc',
'hb-paint.hh',
'hb-face.cc',
'hb-face.hh',
'hb-fallback-shape.cc',
@ -276,6 +278,7 @@ hb_base_headers = files(
'hb-cplusplus.hh',
'hb-deprecated.h',
'hb-draw.h',
'hb-paint.h',
'hb-face.h',
'hb-font.h',
'hb-map.h',

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