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[draw] Fix draw signatures

This commit is contained in:
Behdad Esfahbod 2022-02-02 21:42:48 -06:00
parent 08e1096609
commit 2bed4f46fb
8 changed files with 448 additions and 345 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/hb-draw-glyph.cc
View File

@ -45,7 +45,7 @@
void
hb_font_draw_glyph (hb_font_t *font,
hb_codepoint_t glyph,
const hb_draw_funcs_t *funcs,
hb_draw_funcs_t *funcs,
void *user_data)
{
if (unlikely (funcs == &Null (hb_draw_funcs_t) ||

141
src/hb-draw.cc
View File

@ -28,6 +28,63 @@
#include "hb-draw.hh"
static void
hb_draw_move_to_nil (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data HB_UNUSED,
float to_x HB_UNUSED, float to_y HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_draw_line_to_nil (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data HB_UNUSED,
float to_x HB_UNUSED, float to_y HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_draw_quadratic_to_nil (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data HB_UNUSED,
float control_x HB_UNUSED, float control_y HB_UNUSED,
float to_x HB_UNUSED, float to_y HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_draw_cubic_to_nil (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data HB_UNUSED,
float control1_x HB_UNUSED, float control1_y HB_UNUSED,
float control2_x HB_UNUSED, float control2_y HB_UNUSED,
float to_x HB_UNUSED, float to_y HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
hb_draw_close_path_nil (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data HB_UNUSED,
void *user_data HB_UNUSED) {}
#define HB_DRAW_FUNC_IMPLEMENT(name) \
\
void \
hb_draw_funcs_set_##name##_func (hb_draw_funcs_t *dfuncs, \
hb_draw_##name##_func_t func, \
void *user_data, \
hb_destroy_func_t destroy) \
{ \
if (hb_object_is_immutable (dfuncs)) \
return; \
\
if (dfuncs->destroy.name) \
dfuncs->destroy.name (dfuncs->user_data.name); \
\
if (func) { \
dfuncs->func.name = func; \
dfuncs->user_data.name = user_data; \
dfuncs->destroy.name = destroy; \
} else { \
dfuncs->func.name = hb_draw_##name##_nil; \
dfuncs->user_data.name = nullptr; \
dfuncs->destroy.name = nullptr; \
} \
}
HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_DRAW_FUNC_IMPLEMENT
/**
* hb_draw_funcs_set_move_to_func:
* @funcs: draw functions object
@ -37,13 +94,6 @@
*
* Since: REPLACEME
**/
void
hb_draw_funcs_set_move_to_func (hb_draw_funcs_t *funcs,
hb_draw_move_to_func_t move_to)
{
if (unlikely (hb_object_is_immutable (funcs))) return;
funcs->move_to = move_to;
}
/**
* hb_draw_funcs_set_line_to_func:
@ -54,13 +104,6 @@ hb_draw_funcs_set_move_to_func (hb_draw_funcs_t *funcs,
*
* Since: REPLACEME
**/
void
hb_draw_funcs_set_line_to_func (hb_draw_funcs_t *funcs,
hb_draw_line_to_func_t line_to)
{
if (unlikely (hb_object_is_immutable (funcs))) return;
funcs->line_to = line_to;
}
/**
* hb_draw_funcs_set_quadratic_to_func:
@ -71,14 +114,6 @@ hb_draw_funcs_set_line_to_func (hb_draw_funcs_t *funcs,
*
* Since: REPLACEME
**/
void
hb_draw_funcs_set_quadratic_to_func (hb_draw_funcs_t *funcs,
hb_draw_quadratic_to_func_t quadratic_to)
{
if (unlikely (hb_object_is_immutable (funcs))) return;
funcs->quadratic_to = quadratic_to;
funcs->is_quadratic_to_set = true;
}
/**
* hb_draw_funcs_set_cubic_to_func:
@ -89,13 +124,6 @@ hb_draw_funcs_set_quadratic_to_func (hb_draw_funcs_t *funcs,
*
* Since: REPLACEME
**/
void
hb_draw_funcs_set_cubic_to_func (hb_draw_funcs_t *funcs,
hb_draw_cubic_to_func_t cubic_to)
{
if (unlikely (hb_object_is_immutable (funcs))) return;
funcs->cubic_to = cubic_to;
}
/**
* hb_draw_funcs_set_close_path_func:
@ -106,33 +134,6 @@ hb_draw_funcs_set_cubic_to_func (hb_draw_funcs_t *funcs,
*
* Since: REPLACEME
**/
void
hb_draw_funcs_set_close_path_func (hb_draw_funcs_t *funcs,
hb_draw_close_path_func_t close_path)
{
if (unlikely (hb_object_is_immutable (funcs))) return;
funcs->close_path = close_path;
}
static void
_move_to_nil (float to_x HB_UNUSED, float to_y HB_UNUSED, void *user_data HB_UNUSED) {}
static void
_line_to_nil (float to_x HB_UNUSED, float to_y HB_UNUSED, void *user_data HB_UNUSED) {}
static void
_quadratic_to_nil (float control_x HB_UNUSED, float control_y HB_UNUSED,
float to_x HB_UNUSED, float to_y HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
_cubic_to_nil (float control1_x HB_UNUSED, float control1_y HB_UNUSED,
float control2_x HB_UNUSED, float control2_y HB_UNUSED,
float to_x HB_UNUSED, float to_y HB_UNUSED,
void *user_data HB_UNUSED) {}
static void
_close_path_nil (void *user_data HB_UNUSED) {}
/**
* hb_draw_funcs_create:
@ -148,15 +149,31 @@ hb_draw_funcs_create ()
if (unlikely (!(funcs = hb_object_create<hb_draw_funcs_t> ())))
return const_cast<hb_draw_funcs_t *> (&Null (hb_draw_funcs_t));
funcs->move_to = (hb_draw_move_to_func_t) _move_to_nil;
funcs->line_to = (hb_draw_line_to_func_t) _line_to_nil;
funcs->quadratic_to = (hb_draw_quadratic_to_func_t) _quadratic_to_nil;
funcs->is_quadratic_to_set = false;
funcs->cubic_to = (hb_draw_cubic_to_func_t) _cubic_to_nil;
funcs->close_path = (hb_draw_close_path_func_t) _close_path_nil;
/* XXX Clean up. Use nil object. */
funcs->func.move_to = hb_draw_move_to_nil;
funcs->func.line_to = hb_draw_line_to_nil;
funcs->func.quadratic_to = hb_draw_quadratic_to_nil;
funcs->func.cubic_to = hb_draw_cubic_to_nil;
funcs->func.close_path = hb_draw_close_path_nil;
return funcs;
}
DEFINE_NULL_INSTANCE (hb_draw_funcs_t) =
{
HB_OBJECT_HEADER_STATIC,
{
#define HB_DRAW_FUNC_IMPLEMENT(name) hb_draw_##name##_nil,
HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_DRAW_FUNC_IMPLEMENT
}
};
/* XXX Remove. */
bool
hb_draw_funcs_t::quadratic_to_is_set () { return func.quadratic_to != hb_draw_quadratic_to_nil; }
/**
* hb_draw_funcs_reference:
* @funcs: draw functions

54
src/hb-draw.h
View File

@ -33,26 +33,6 @@
HB_BEGIN_DECLS
typedef void (*hb_draw_move_to_func_t) (float to_x,
float to_y,
void *user_data);
typedef void (*hb_draw_line_to_func_t) (float to_x,
float to_y,
void *user_data);
typedef void (*hb_draw_quadratic_to_func_t) (float control_x,
float control_y,
float to_x,
float to_y,
void *user_data);
typedef void (*hb_draw_cubic_to_func_t) (float control1_x,
float control1_y,
float control2_x,
float control2_y,
float to_x,
float to_y,
void *user_data);
typedef void (*hb_draw_close_path_func_t) (void *user_data);
/**
* hb_draw_funcs_t:
*
@ -63,27 +43,51 @@ typedef void (*hb_draw_close_path_func_t) (void *user_data);
*
* Since: REPLACEME
**/
typedef struct hb_draw_funcs_t hb_draw_funcs_t;
typedef void (*hb_draw_move_to_func_t) (hb_draw_funcs_t *dfuncs, void *draw_data,
float to_x, float to_y,
void *user_data);
typedef void (*hb_draw_line_to_func_t) (hb_draw_funcs_t *dfuncs, void *draw_data,
float to_x, float to_y,
void *user_data);
typedef void (*hb_draw_quadratic_to_func_t) (hb_draw_funcs_t *dfuncs, void *draw_data,
float control_x, float control_y,
float to_x, float to_y,
void *user_data);
typedef void (*hb_draw_cubic_to_func_t) (hb_draw_funcs_t *dfuncs, void *draw_data,
float control1_x, float control1_y,
float control2_x, float control2_y,
float to_x, float to_y,
void *user_data);
typedef void (*hb_draw_close_path_func_t) (hb_draw_funcs_t *dfuncs, void *draw_data,
void *user_data);
HB_EXTERN void
hb_draw_funcs_set_move_to_func (hb_draw_funcs_t *funcs,
hb_draw_move_to_func_t move_to);
hb_draw_move_to_func_t move_to,
void *user_data, hb_destroy_func_t destroy);
HB_EXTERN void
hb_draw_funcs_set_line_to_func (hb_draw_funcs_t *funcs,
hb_draw_line_to_func_t line_to);
hb_draw_line_to_func_t line_to,
void *user_data, hb_destroy_func_t destroy);
HB_EXTERN void
hb_draw_funcs_set_quadratic_to_func (hb_draw_funcs_t *funcs,
hb_draw_quadratic_to_func_t quadratic_to);
hb_draw_quadratic_to_func_t quadratic_to,
void *user_data, hb_destroy_func_t destroy);
HB_EXTERN void
hb_draw_funcs_set_cubic_to_func (hb_draw_funcs_t *funcs,
hb_draw_cubic_to_func_t cubic_to);
hb_draw_cubic_to_func_t cubic_to,
void *user_data, hb_destroy_func_t destroy);
HB_EXTERN void
hb_draw_funcs_set_close_path_func (hb_draw_funcs_t *funcs,
hb_draw_close_path_func_t close_path);
hb_draw_close_path_func_t close_path,
void *user_data, hb_destroy_func_t destroy);
HB_EXTERN hb_draw_funcs_t *
hb_draw_funcs_create (void);

97
src/hb-draw.hh
View File

@ -27,24 +27,82 @@
#include "hb.hh"
/*
* hb_draw_funcs_t
*/
#define HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS \
HB_DRAW_FUNC_IMPLEMENT (move_to) \
HB_DRAW_FUNC_IMPLEMENT (line_to) \
HB_DRAW_FUNC_IMPLEMENT (quadratic_to) \
HB_DRAW_FUNC_IMPLEMENT (cubic_to) \
HB_DRAW_FUNC_IMPLEMENT (close_path) \
/* ^--- Add new callbacks here */
struct hb_draw_funcs_t
{
hb_object_header_t header;
hb_draw_move_to_func_t move_to;
hb_draw_line_to_func_t line_to;
hb_draw_quadratic_to_func_t quadratic_to;
bool is_quadratic_to_set;
hb_draw_cubic_to_func_t cubic_to;
hb_draw_close_path_func_t close_path;
struct {
#define HB_DRAW_FUNC_IMPLEMENT(name) hb_draw_##name##_func_t name;
HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_DRAW_FUNC_IMPLEMENT
} func;
struct {
#define HB_DRAW_FUNC_IMPLEMENT(name) void *name;
HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_DRAW_FUNC_IMPLEMENT
} user_data;
struct {
#define HB_DRAW_FUNC_IMPLEMENT(name) hb_destroy_func_t name;
HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_DRAW_FUNC_IMPLEMENT
} destroy;
void move_to (void *draw_data,
float to_x, float to_y)
{ func.move_to (this, draw_data,
to_x, to_y,
user_data.move_to); }
void line_to (void *draw_data,
float to_x, float to_y)
{ func.line_to (this, draw_data,
to_x, to_y,
user_data.line_to); }
void quadratic_to (void *draw_data,
float control_x, float control_y,
float to_x, float to_y)
{ func.quadratic_to (this, draw_data,
control_x, control_y,
to_x, to_y,
user_data.quadratic_to); }
void cubic_to (void *draw_data,
float control1_x, float control1_y,
float control2_x, float control2_y,
float to_x, float to_y)
{ func.cubic_to (this, draw_data,
control1_x, control1_y,
control2_x, control2_y,
to_x, to_y,
user_data.cubic_to); }
void close_path (void *draw_data)
{ func.close_path (this, draw_data,
user_data.close_path); }
/* XXX Remove */
HB_INTERNAL bool quadratic_to_is_set ();
};
DECLARE_NULL_INSTANCE (hb_draw_funcs_t);
struct draw_helper_t
{
draw_helper_t (const hb_draw_funcs_t *funcs_, void *user_data_)
draw_helper_t (hb_draw_funcs_t *funcs_, void *draw_data_)
{
funcs = funcs_;
user_data = user_data_;
draw_data = draw_data_;
path_open = false;
path_start_x = current_x = path_start_y = current_y = 0;
}
@ -61,7 +119,7 @@ struct draw_helper_t
{
if (equal_to_current (x, y)) return;
if (!path_open) start_path ();
funcs->line_to (x, y, user_data);
funcs->line_to (draw_data, x, y);
current_x = x;
current_y = y;
}
@ -73,14 +131,15 @@ struct draw_helper_t
if (equal_to_current (control_x, control_y) && equal_to_current (to_x, to_y))
return;
if (!path_open) start_path ();
if (funcs->is_quadratic_to_set)
funcs->quadratic_to (control_x, control_y, to_x, to_y, user_data);
if (funcs->quadratic_to_is_set ())
funcs->quadratic_to (draw_data, control_x, control_y, to_x, to_y);
else
funcs->cubic_to (roundf ((current_x + 2.f * control_x) / 3.f),
funcs->cubic_to (draw_data,
roundf ((current_x + 2.f * control_x) / 3.f),
roundf ((current_y + 2.f * control_y) / 3.f),
roundf ((to_x + 2.f * control_x) / 3.f),
roundf ((to_y + 2.f * control_y) / 3.f),
to_x, to_y, user_data);
to_x, to_y);
current_x = to_x;
current_y = to_y;
}
@ -95,7 +154,7 @@ struct draw_helper_t
equal_to_current (to_x, to_y))
return;
if (!path_open) start_path ();
funcs->cubic_to (control1_x, control1_y, control2_x, control2_y, to_x, to_y, user_data);
funcs->cubic_to (draw_data, control1_x, control1_y, control2_x, control2_y, to_x, to_y);
current_x = to_x;
current_y = to_y;
}
@ -105,8 +164,8 @@ struct draw_helper_t
if (path_open)
{
if ((path_start_x != current_x) || (path_start_y != current_y))
funcs->line_to (path_start_x, path_start_y, user_data);
funcs->close_path (user_data);
funcs->line_to (draw_data, path_start_x, path_start_y);
funcs->close_path (draw_data);
}
path_open = false;
path_start_x = current_x = path_start_y = current_y = 0;
@ -120,7 +179,7 @@ struct draw_helper_t
{
if (path_open) end_path ();
path_open = true;
funcs->move_to (path_start_x, path_start_y, user_data);
funcs->move_to (draw_data, path_start_x, path_start_y);
}
float path_start_x;
@ -130,8 +189,8 @@ struct draw_helper_t
float current_y;
bool path_open;
const hb_draw_funcs_t *funcs;
void *user_data;
hb_draw_funcs_t *funcs;
void *draw_data;
};
#endif /* HB_DRAW_HH */

2
src/hb-font.h
View File

@ -1059,7 +1059,7 @@ hb_font_set_var_named_instance (hb_font_t *font,
HB_EXTERN void
hb_font_draw_glyph (hb_font_t *font,
hb_codepoint_t glyph,
const hb_draw_funcs_t *funcs,
hb_draw_funcs_t *funcs,
void *user_data);
HB_END_DECLS

81
src/main.cc
View File

@ -129,48 +129,55 @@ png_dump (hb_face_t *face, unsigned face_index)
hb_font_destroy (font);
}
struct user_data_t
struct draw_data_t
{
FILE *f;
hb_position_t ascender;
};
static void
move_to (float to_x, float to_y, user_data_t *user_data)
{
fprintf (user_data->f, "M%g,%g", to_x, user_data->ascender - to_y);
}
static void
line_to (float to_x, float to_y, user_data_t *user_data)
{
fprintf (user_data->f, "L%g,%g", to_x, user_data->ascender - to_y);
}
static void
quadratic_to (float control_x, float control_y,
move_to (hb_draw_funcs_t *dfuncs, draw_data_t *draw_data,
float to_x, float to_y,
user_data_t *user_data)
void *)
{
fprintf (user_data->f, "Q%g,%g %g,%g", control_x, user_data->ascender - control_y,
to_x, user_data->ascender - to_y);
fprintf (draw_data->f, "M%g,%g", to_x, draw_data->ascender - to_y);
}
static void
cubic_to (float control1_x, float control1_y,
line_to (hb_draw_funcs_t *dfuncs, draw_data_t *draw_data,
float to_x, float to_y,
void *)
{
fprintf (draw_data->f, "L%g,%g", to_x, draw_data->ascender - to_y);
}
static void
quadratic_to (hb_draw_funcs_t *dfuncs, draw_data_t *draw_data,
float control_x, float control_y,
float to_x, float to_y,
void *)
{
fprintf (draw_data->f, "Q%g,%g %g,%g", control_x, draw_data->ascender - control_y,
to_x, draw_data->ascender - to_y);
}
static void
cubic_to (hb_draw_funcs_t *dfuncs, draw_data_t *draw_data,
float control1_x, float control1_y,
float control2_x, float control2_y,
float to_x, float to_y,
user_data_t *user_data)
void *)
{
fprintf (user_data->f, "C%g,%g %g,%g %g,%g", control1_x, user_data->ascender - control1_y,
control2_x, user_data->ascender - control2_y,
to_x, user_data->ascender - to_y);
fprintf (draw_data->f, "C%g,%g %g,%g %g,%g", control1_x, draw_data->ascender - control1_y,
control2_x, draw_data->ascender - control2_y,
to_x, draw_data->ascender - to_y);
}
static void
close_path (user_data_t *user_data)
close_path (hb_draw_funcs_t *dfuncs, draw_data_t *draw_data,
void *)
{
fprintf (user_data->f, "Z");
fprintf (draw_data->f, "Z");
}
static void
@ -218,9 +225,9 @@ layered_glyph_dump (hb_font_t *font, hb_draw_funcs_t *funcs, unsigned face_index
" viewBox=\"%d %d %d %d\">\n",
extents.x_bearing, 0,
extents.x_bearing + extents.width, -extents.height);
user_data_t user_data;
user_data.ascender = extents.y_bearing;
user_data.f = f;
draw_data_t draw_data;
draw_data.ascender = extents.y_bearing;
draw_data.f = f;
for (unsigned layer = 0; layer < num_layers; ++layer)
{
@ -232,7 +239,7 @@ layered_glyph_dump (hb_font_t *font, hb_draw_funcs_t *funcs, unsigned face_index
if (hb_color_get_alpha (color) != 255)
fprintf (f, "fill-opacity=\"%.3f\"", (double) hb_color_get_alpha (color) / 255.);
fprintf (f, "d=\"");
hb_font_draw_glyph (font, layers[layer].glyph, funcs, &user_data);
hb_font_draw_glyph (font, layers[layer].glyph, funcs, &draw_data);
fprintf (f, "\"/>\n");
}
@ -268,10 +275,10 @@ dump_glyphs (hb_font_t *font, hb_draw_funcs_t *funcs, unsigned face_index)
" viewBox=\"%d %d %d %d\"><path d=\"",
extents.x_bearing, 0,
extents.x_bearing + extents.width, font_extents.ascender - font_extents.descender);
user_data_t user_data;
user_data.ascender = font_extents.ascender;
user_data.f = f;
hb_font_draw_glyph (font, gid, funcs, &user_data);
draw_data_t draw_data;
draw_data.ascender = font_extents.ascender;
draw_data.f = f;
hb_font_draw_glyph (font, gid, funcs, &draw_data);
fprintf (f, "\"/></svg>");
fclose (f);
}
@ -298,11 +305,11 @@ dump_glyphs (hb_blob_t *blob, const char *font_name)
fclose (font_name_file);
hb_draw_funcs_t *funcs = hb_draw_funcs_create ();
hb_draw_funcs_set_move_to_func (funcs, (hb_draw_move_to_func_t) move_to);
hb_draw_funcs_set_line_to_func (funcs, (hb_draw_line_to_func_t) line_to);
hb_draw_funcs_set_quadratic_to_func (funcs, (hb_draw_quadratic_to_func_t) quadratic_to);
hb_draw_funcs_set_cubic_to_func (funcs, (hb_draw_cubic_to_func_t) cubic_to);
hb_draw_funcs_set_close_path_func (funcs, (hb_draw_close_path_func_t) close_path);
hb_draw_funcs_set_move_to_func (funcs, (hb_draw_move_to_func_t) move_to, nullptr, nullptr);
hb_draw_funcs_set_line_to_func (funcs, (hb_draw_line_to_func_t) line_to, nullptr, nullptr);
hb_draw_funcs_set_quadratic_to_func (funcs, (hb_draw_quadratic_to_func_t) quadratic_to, nullptr, nullptr);
hb_draw_funcs_set_cubic_to_func (funcs, (hb_draw_cubic_to_func_t) cubic_to, nullptr, nullptr);
hb_draw_funcs_set_close_path_func (funcs, (hb_draw_close_path_func_t) close_path, nullptr, nullptr);
unsigned num_faces = hb_face_count (blob);
for (unsigned face_index = 0; face_index < num_faces; ++face_index)

337
test/api/test-draw.c
View File

@ -27,12 +27,12 @@
#include <hb.h>
typedef struct user_data_t
typedef struct draw_data_t
{
char *str;
unsigned size;
unsigned consumed;
} user_data_t;
} draw_data_t;
/* Our modified itoa, why not using libc's? it is going to be used
in harfbuzzjs where libc isn't available */
@ -96,69 +96,76 @@ test_itoa (void)
}
static void
move_to (float to_x, float to_y, user_data_t *user_data)
move_to (hb_draw_funcs_t *dfuncs, draw_data_t *draw_data,
float to_x, float to_y,
void *user_data)
{
/* 4 = command character space + comma + array starts with 0 index + nul character space */
if (user_data->consumed + 2 * ITOA_BUF_SIZE + 4 > user_data->size) return;
user_data->str[user_data->consumed++] = 'M';
user_data->consumed += _hb_itoa (to_x, user_data->str + user_data->consumed);
user_data->str[user_data->consumed++] = ',';
user_data->consumed += _hb_itoa (to_y, user_data->str + user_data->consumed);
if (draw_data->consumed + 2 * ITOA_BUF_SIZE + 4 > draw_data->size) return;
draw_data->str[draw_data->consumed++] = 'M';
draw_data->consumed += _hb_itoa (to_x, draw_data->str + draw_data->consumed);
draw_data->str[draw_data->consumed++] = ',';
draw_data->consumed += _hb_itoa (to_y, draw_data->str + draw_data->consumed);
}
static void
line_to (float to_x, float to_y, user_data_t *user_data)
{
if (user_data->consumed + 2 * ITOA_BUF_SIZE + 4 > user_data->size) return;
user_data->str[user_data->consumed++] = 'L';
user_data->consumed += _hb_itoa (to_x, user_data->str + user_data->consumed);
user_data->str[user_data->consumed++] = ',';
user_data->consumed += _hb_itoa (to_y, user_data->str + user_data->consumed);
}
static void
quadratic_to (float control_x, float control_y,
line_to (hb_draw_funcs_t *dfuncs, draw_data_t *draw_data,
float to_x, float to_y,
user_data_t *user_data)
void *user_data)
{
if (user_data->consumed + 4 * ITOA_BUF_SIZE + 6 > user_data->size) return;
user_data->str[user_data->consumed++] = 'Q';
user_data->consumed += _hb_itoa (control_x, user_data->str + user_data->consumed);
user_data->str[user_data->consumed++] = ',';
user_data->consumed += _hb_itoa (control_y, user_data->str + user_data->consumed);
user_data->str[user_data->consumed++] = ' ';
user_data->consumed += _hb_itoa (to_x, user_data->str + user_data->consumed);
user_data->str[user_data->consumed++] = ',';
user_data->consumed += _hb_itoa (to_y, user_data->str + user_data->consumed);
if (draw_data->consumed + 2 * ITOA_BUF_SIZE + 4 > draw_data->size) return;
draw_data->str[draw_data->consumed++] = 'L';
draw_data->consumed += _hb_itoa (to_x, draw_data->str + draw_data->consumed);
draw_data->str[draw_data->consumed++] = ',';
draw_data->consumed += _hb_itoa (to_y, draw_data->str + draw_data->consumed);
}
static void
cubic_to (float control1_x, float control1_y,
quadratic_to (hb_draw_funcs_t *dfuncs, draw_data_t *draw_data,
float control_x, float control_y,
float to_x, float to_y,
void *user_data)
{
if (draw_data->consumed + 4 * ITOA_BUF_SIZE + 6 > draw_data->size) return;
draw_data->str[draw_data->consumed++] = 'Q';
draw_data->consumed += _hb_itoa (control_x, draw_data->str + draw_data->consumed);
draw_data->str[draw_data->consumed++] = ',';
draw_data->consumed += _hb_itoa (control_y, draw_data->str + draw_data->consumed);
draw_data->str[draw_data->consumed++] = ' ';
draw_data->consumed += _hb_itoa (to_x, draw_data->str + draw_data->consumed);
draw_data->str[draw_data->consumed++] = ',';
draw_data->consumed += _hb_itoa (to_y, draw_data->str + draw_data->consumed);
}
static void
cubic_to (hb_draw_funcs_t *dfuncs, draw_data_t *draw_data,
float control1_x, float control1_y,
float control2_x, float control2_y,
float to_x, float to_y,
user_data_t *user_data)
void *user_data)
{
if (user_data->consumed + 6 * ITOA_BUF_SIZE + 8 > user_data->size) return;
user_data->str[user_data->consumed++] = 'C';
user_data->consumed += _hb_itoa (control1_x, user_data->str + user_data->consumed);
user_data->str[user_data->consumed++] = ',';
user_data->consumed += _hb_itoa (control1_y, user_data->str + user_data->consumed);
user_data->str[user_data->consumed++] = ' ';
user_data->consumed += _hb_itoa (control2_x, user_data->str + user_data->consumed);
user_data->str[user_data->consumed++] = ',';
user_data->consumed += _hb_itoa (control2_y, user_data->str + user_data->consumed);
user_data->str[user_data->consumed++] = ' ';
user_data->consumed += _hb_itoa (to_x, user_data->str + user_data->consumed);
user_data->str[user_data->consumed++] = ',';
user_data->consumed += _hb_itoa (to_y, user_data->str + user_data->consumed);
if (draw_data->consumed + 6 * ITOA_BUF_SIZE + 8 > draw_data->size) return;
draw_data->str[draw_data->consumed++] = 'C';
draw_data->consumed += _hb_itoa (control1_x, draw_data->str + draw_data->consumed);
draw_data->str[draw_data->consumed++] = ',';
draw_data->consumed += _hb_itoa (control1_y, draw_data->str + draw_data->consumed);
draw_data->str[draw_data->consumed++] = ' ';
draw_data->consumed += _hb_itoa (control2_x, draw_data->str + draw_data->consumed);
draw_data->str[draw_data->consumed++] = ',';
draw_data->consumed += _hb_itoa (control2_y, draw_data->str + draw_data->consumed);
draw_data->str[draw_data->consumed++] = ' ';
draw_data->consumed += _hb_itoa (to_x, draw_data->str + draw_data->consumed);
draw_data->str[draw_data->consumed++] = ',';
draw_data->consumed += _hb_itoa (to_y, draw_data->str + draw_data->consumed);
}
static void
close_path (user_data_t *user_data)
close_path (hb_draw_funcs_t *dfuncs, draw_data_t *draw_data,
void *user_data)
{
if (user_data->consumed + 2 > user_data->size) return;
user_data->str[user_data->consumed++] = 'Z';
if (draw_data->consumed + 2 > draw_data->size) return;
draw_data->str[draw_data->consumed++] = 'Z';
}
static hb_draw_funcs_t *funcs;
@ -178,17 +185,17 @@ test_hb_draw_glyf (void)
hb_face_destroy (face);
char str[1024];
user_data_t user_data = {
draw_data_t draw_data = {
.str = str,
.size = sizeof (str),
.consumed = 0
};
user_data.consumed = 0;
hb_font_draw_glyph (font, 4, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 4, funcs, &draw_data);
user_data.consumed = 0;
hb_font_draw_glyph (font, 3, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 3, funcs, &draw_data);
char expected[] = "M275,442Q232,442 198,420Q164,397 145,353Q126,309 126,245"
"Q126,182 147,139Q167,95 204,73Q240,50 287,50Q330,50 367,70"
"Q404,90 427,128L451,116Q431,54 384,21Q336,-13 266,-13"
@ -196,11 +203,11 @@ test_hb_draw_glyf (void)
"Q108,427 160,457Q212,487 272,487Q316,487 354,470Q392,453 417,424"
"Q442,395 448,358Q441,321 403,321Q378,321 367,334"
"Q355,347 350,366L325,454L371,417Q346,430 321,436Q296,442 275,442Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
/* Test translating quadratic calls to cubic by a _draw_funcs_t that doesn't set the callback */
user_data.consumed = 0;
hb_font_draw_glyph (font, 3, funcs2, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 3, funcs2, &draw_data);
char expected2[] = "M275,442C246,442 221,435 198,420C175,405 158,382 145,353"
"C132,324 126,288 126,245C126,203 133,168 147,139C160,110 179,88 204,73"
"C228,58 256,50 287,50C316,50 342,57 367,70C392,83 412,103 427,128"
@ -210,15 +217,15 @@ test_hb_draw_glyf (void)
"C379,459 400,443 417,424C434,405 444,383 448,358C443,333 428,321 403,321"
"C386,321 374,325 367,334C359,343 353,353 350,366L325,454L371,417"
"C354,426 338,432 321,436C304,440 289,442 275,442Z";
g_assert_cmpmem (str, user_data.consumed, expected2, sizeof (expected2) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected2, sizeof (expected2) - 1);
hb_variation_t var;
var.tag = HB_TAG ('w','g','h','t');
var.value = 800;
hb_font_set_variations (font, &var, 1);
user_data.consumed = 0;
hb_font_draw_glyph (font, 3, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 3, funcs, &draw_data);
char expected3[] = "M323,448Q297,448 271,430Q244,412 226,371Q209,330 209,261"
"Q209,204 225,166Q242,127 272,107Q303,86 344,86Q378,86 404,101"
"Q430,115 451,137L488,103Q458,42 404,13Q350,-16 279,-16"
@ -226,7 +233,7 @@ test_hb_draw_glyf (void)
"Q99,440 163,470Q226,501 303,501Q357,501 399,480Q440,460 464,426"
"Q488,392 492,352Q475,297 420,297Q390,297 366,319Q342,342 339,401"
"L333,469L411,427Q387,438 367,443Q348,448 323,448Z";
g_assert_cmpmem (str, user_data.consumed, expected3, sizeof (expected3) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected3, sizeof (expected3) - 1);
hb_font_destroy (font);
}
@ -239,16 +246,16 @@ test_hb_draw_cff1 (void)
hb_face_destroy (face);
char str[1024];
user_data_t user_data = {
draw_data_t draw_data = {
.str = str,
.size = sizeof (str),
.consumed = 0
};
hb_font_draw_glyph (font, 3, funcs, &user_data);
hb_font_draw_glyph (font, 3, funcs, &draw_data);
char expected[] = "M203,367C227,440 248,512 268,588L272,588C293,512 314,440 338,367L369,267L172,267L203,367Z"
"M3,0L88,0L151,200L390,200L452,0L541,0L319,656L225,656L3,0Z"
"M300,653L342,694L201,861L143,806L300,653Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
hb_font_destroy (font);
}
@ -262,18 +269,18 @@ test_hb_draw_cff1_rline (void)
hb_face_destroy (face);
char str[1024];
user_data_t user_data = {
draw_data_t draw_data = {
.str = str,
.size = sizeof (str),
.consumed = 0
};
hb_font_draw_glyph (font, 1, funcs, &user_data);
hb_font_draw_glyph (font, 1, funcs, &draw_data);
char expected[] = "M775,400C705,400 650,343 650,274L650,250L391,250L713,572L392,893"
"L287,1000C311,942 296,869 250,823C250,823 286,858 321,823L571,572"
"L150,150L750,150L750,276C750,289 761,300 775,300C789,300 800,289 800,276"
"L800,100L150,100C100,100 100,150 100,150C100,85 58,23 0,0L900,0L900,274"
"C900,343 844,400 775,400Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
hb_font_destroy (font);
}
@ -286,33 +293,33 @@ test_hb_draw_cff2 (void)
hb_face_destroy (face);
char str[1024];
user_data_t user_data = {
draw_data_t draw_data = {
.str = str,
.size = sizeof (str)
};
user_data.consumed = 0;
hb_font_draw_glyph (font, 3, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 3, funcs, &draw_data);
char expected[] = "M275,442C303,442 337,435 371,417L325,454L350,366"
"C357,341 370,321 403,321C428,321 443,333 448,358"
"C435,432 361,487 272,487C153,487 43,393 43,236"
"C43,83 129,-13 266,-13C360,-13 424,33 451,116L427,128"
"C396,78 345,50 287,50C193,50 126,119 126,245C126,373 188,442 275,442Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
hb_variation_t var;
var.tag = HB_TAG ('w','g','h','t');
var.value = 800;
hb_font_set_variations (font, &var, 1);
user_data.consumed = 0;
hb_font_draw_glyph (font, 3, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 3, funcs, &draw_data);
char expected2[] = "M323,448C356,448 380,441 411,427L333,469L339,401"
"C343,322 379,297 420,297C458,297 480,314 492,352"
"C486,433 412,501 303,501C148,501 25,406 25,241"
"C25,70 143,-16 279,-16C374,-16 447,22 488,103L451,137"
"C423,107 390,86 344,86C262,86 209,148 209,261C209,398 271,448 323,448Z";
g_assert_cmpmem (str, user_data.consumed, expected2, sizeof (expected2) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected2, sizeof (expected2) - 1);
hb_font_destroy (font);
}
@ -322,7 +329,7 @@ test_hb_draw_ttf_parser_tests (void)
{
/* https://github.com/RazrFalcon/ttf-parser/blob/337e7d1c/tests/tests.rs#L50-L133 */
char str[1024];
user_data_t user_data = {
draw_data_t draw_data = {
.str = str,
.size = sizeof (str)
};
@ -331,20 +338,20 @@ test_hb_draw_ttf_parser_tests (void)
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
{
user_data.consumed = 0;
hb_font_draw_glyph (font, 0, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 0, funcs, &draw_data);
char expected[] = "M50,0L50,750L450,750L450,0L50,0Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
}
{
user_data.consumed = 0;
hb_font_draw_glyph (font, 1, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 1, funcs, &draw_data);
char expected[] = "M56,416L56,487L514,487L514,416L56,416ZM56,217L56,288L514,288L514,217L56,217Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
}
{
user_data.consumed = 0;
hb_font_draw_glyph (font, 4, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 4, funcs, &draw_data);
char expected[] = "M332,468L197,468L197,0L109,0L109,468L15,468L15,509L109,539"
"L109,570Q109,674 155,720Q201,765 283,765Q315,765 342,760"
"Q368,754 387,747L364,678Q348,683 327,688Q306,693 284,693"
@ -352,22 +359,22 @@ test_hb_draw_ttf_parser_tests (void)
"M474,737Q494,737 510,724Q525,710 525,681Q525,653 510,639"
"Q494,625 474,625Q452,625 437,639Q422,653 422,681"
"Q422,710 437,724Q452,737 474,737ZM517,536L517,0L429,0L429,536L517,536Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
}
{
user_data.consumed = 0;
hb_font_draw_glyph (font, 5, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 5, funcs, &draw_data);
char expected[] = "";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
}
{
user_data.consumed = 0;
hb_font_draw_glyph (font, 6, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 6, funcs, &draw_data);
char expected[] = "M346,468L211,468L211,0L123,0L123,468L29,468L29,509L123,539"
"L123,570Q123,674 169,720Q215,765 297,765Q329,765 356,760"
"Q382,754 401,747L378,678Q362,683 341,688Q320,693 298,693"
"Q254,693 233,664Q211,634 211,571L211,536L346,536L346,468Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
}
hb_font_destroy (font);
@ -377,15 +384,15 @@ test_hb_draw_ttf_parser_tests (void)
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
user_data.consumed = 0;
hb_font_draw_glyph (font, 1, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 1, funcs, &draw_data);
char expected[] = "M0,0C100,0 150,-20 250,-20C350,-20 400,0 500,0C500,100 520,150 520,250"
"C520,350 500,400 500,500C400,500 350,520 250,520C150,520 100,500 0,500"
"C0,400 -20,350 -20,250C-20,150 0,100 0,0ZM50,50C50,130 34,170 34,250"
"C34,330 50,370 50,450C130,450 170,466 250,466C330,466 370,450 450,450"
"C450,370 466,330 466,250C466,170 450,130 450,50C370,50 330,34 250,34"
"C170,34 130,50 50,50Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
hb_font_destroy (font);
}
@ -394,12 +401,12 @@ test_hb_draw_ttf_parser_tests (void)
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
user_data.consumed = 0;
hb_font_draw_glyph (font, 1, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 1, funcs, &draw_data);
char expected[] = "M82,0L164,0L164,486L82,486L82,0Z"
"M124,586C156,586 181,608 181,639C181,671 156,692 124,692"
"C92,692 67,671 67,639C67,608 92,586 124,586Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
hb_font_destroy (font);
}
@ -410,7 +417,7 @@ test_hb_draw_font_kit_glyphs_tests (void)
{
/* https://github.com/foliojs/fontkit/blob/master/test/glyphs.js */
char str[2048];
user_data_t user_data = {
draw_data_t draw_data = {
.str = str,
.size = sizeof (str)
};
@ -421,26 +428,26 @@ test_hb_draw_font_kit_glyphs_tests (void)
hb_face_destroy (face);
/* should get a path for the glyph */
user_data.consumed = 0;
hb_font_draw_glyph (font, 37, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 37, funcs, &draw_data);
char expected[] = "M201,1462L614,1462Q905,1462 1035,1375Q1165,1288 1165,1100"
"Q1165,970 1093,886Q1020,801 881,776L881,766Q1214,709 1214,416"
"Q1214,220 1082,110Q949,0 711,0L201,0L201,1462ZM371,836L651,836"
"Q831,836 910,893Q989,949 989,1083Q989,1206 901,1261"
"Q813,1315 621,1315L371,1315L371,836ZM371,692L371,145L676,145"
"Q853,145 943,214Q1032,282 1032,428Q1032,564 941,628Q849,692 662,692L371,692Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
/* should get a path for the glyph */
user_data.consumed = 0;
hb_font_draw_glyph (font, 171, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 171, funcs, &draw_data);
char expected2[] = "M639,-20Q396,-20 256,128Q115,276 115,539Q115,804 246,960Q376,1116 596,1116"
"Q802,1116 922,981Q1042,845 1042,623L1042,518L287,518Q292,325 385,225"
"Q477,125 645,125Q822,125 995,199L995,51Q907,13 829,-3Q750,-20 639,-20Z"
"M594,977Q462,977 384,891Q305,805 291,653L864,653Q864,810 794,894"
"Q724,977 594,977ZM471,1266Q519,1328 575,1416Q630,1504 662,1569"
"L864,1569L864,1548Q820,1483 733,1388Q646,1293 582,1241L471,1241L471,1266Z";
g_assert_cmpmem (str, user_data.consumed, expected2, sizeof (expected2) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected2, sizeof (expected2) - 1);
hb_font_destroy (font);
}
@ -458,8 +465,8 @@ test_hb_draw_font_kit_glyphs_tests (void)
hb_buffer_destroy (buffer);
/* should resolve composite glyphs recursively */
user_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &draw_data);
char expected[] = "M581,274L443,274Q409,274 384,259Q359,243 348,219Q336,194 340,166"
"Q343,138 365,111L468,-13Q470,-10 473,-6Q475,-3 477,0L253,0Q225,0 203,8"
"Q180,15 168,32Q155,48 155,73L155,269L50,269L50,73Q50,24 69,-10"
@ -471,16 +478,16 @@ test_hb_draw_font_kit_glyphs_tests (void)
"M360,-194Q360,-216 375,-231Q390,-246 412,-246Q434,-246 449,-231"
"Q464,-216 464,-194Q464,-172 449,-157Q434,-142 412,-142"
"Q390,-142 375,-157Q360,-172 360,-194Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
/* should transform points of a composite glyph */
user_data.consumed = 0;
hb_font_draw_glyph (font, 2, funcs, &user_data); /* 2 == arAlef.fina */
draw_data.consumed = 0;
hb_font_draw_glyph (font, 2, funcs, &draw_data); /* 2 == arAlef.fina */
char expected2[] = "M155,624L155,84Q150,90 146,95Q141,99 136,105"
"L292,105L292,0L156,0Q128,0 104,14Q79,27 65,51"
"Q50,74 50,104L50,624L155,624ZM282,105L312,105"
"L312,0L282,0L282,105Z";
g_assert_cmpmem (str, user_data.consumed, expected2, sizeof (expected2) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected2, sizeof (expected2) - 1);
hb_font_destroy (font);
}
@ -490,11 +497,11 @@ test_hb_draw_font_kit_glyphs_tests (void)
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
user_data.consumed = 0;
hb_font_draw_glyph (font, 5, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 5, funcs, &draw_data);
char expected[] = "M90,0L258,0C456,0 564,122 564,331C564,539 456,656 254,656L90,656L90,0Z"
"M173,68L173,588L248,588C401,588 478,496 478,331C478,165 401,68 248,68L173,68Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
hb_font_destroy (font);
}
@ -505,12 +512,12 @@ test_hb_draw_font_kit_glyphs_tests (void)
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
user_data.consumed = 0;
hb_font_draw_glyph (font, 1, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 1, funcs, &draw_data);
char expected[] = "M139,390C175,390 205,419 205,459C205,501 175,530 139,530C103,530 73,501 73,459"
"C73,419 103,390 139,390ZM139,-13C175,-13 205,15 205,56C205,97 175,127 139,127"
"C103,127 73,97 73,56C73,15 103,-13 139,-13Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
hb_font_destroy (font);
}
@ -522,7 +529,7 @@ test_hb_draw_font_kit_variations_tests (void)
{
/* https://github.com/foliojs/fontkit/blob/b310db5/test/variations.js */
char str[2048];
user_data_t user_data = {
draw_data_t draw_data = {
.str = str,
.size = sizeof (str)
};
@ -550,8 +557,8 @@ test_hb_draw_font_kit_variations_tests (void)
codepoint = hb_buffer_get_glyph_infos (buffer, NULL)[0].codepoint;
hb_buffer_destroy (buffer);
user_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &draw_data);
char expected[] = "M371,-102L371,539L914,539L914,-27Q914,-102 840,-102"
"Q796,-102 755,-98L742,-59Q790,-66 836,-66Q871,-66 871,-31L871,504"
"L414,504L414,-102L371,-102ZM203,-94Q138,-94 86,-90L74,-52"
@ -572,7 +579,7 @@ test_hb_draw_font_kit_variations_tests (void)
"Q754,410 775,381Q794,407 813,453L848,434Q826,387 801,352Q823,321 848,281"
"L813,262Q791,301 775,323Q749,288 715,258ZM348,719L348,754L941,754L941,719"
"L348,719ZM936,570Q870,602 817,622Q764,641 727,652L749,688Q852,655 957,605L936,570Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
hb_font_destroy (font);
}
@ -595,8 +602,8 @@ test_hb_draw_font_kit_variations_tests (void)
codepoint = hb_buffer_get_glyph_infos (buffer, NULL)[0].codepoint;
hb_buffer_destroy (buffer);
user_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &draw_data);
char expected[] = "M371,-102L371,539L914,539L914,-27Q914,-102 840,-102Q796,-102 755,-98"
"L742,-59Q790,-66 836,-66Q871,-66 871,-31L871,504L414,504L414,-102"
"L371,-102ZM203,-94Q138,-94 86,-90L74,-52Q137,-59 188,-59Q211,-59 222,-46"
@ -616,7 +623,7 @@ test_hb_draw_font_kit_variations_tests (void)
"L848,434Q826,387 801,352Q823,321 848,281L813,262Q791,301 775,323Q749,288 715,258Z"
"M348,719L348,754L941,754L941,719L348,719ZM936,570Q870,602 817,622"
"Q764,641 727,652L749,688Q852,655 957,605L936,570Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
hb_font_destroy (font);
}
@ -639,8 +646,8 @@ test_hb_draw_font_kit_variations_tests (void)
codepoint = hb_buffer_get_glyph_infos (buffer, NULL)[0].codepoint;
hb_buffer_destroy (buffer);
user_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &draw_data);
char expected[] = "M371,-102L371,539L914,539L914,-27Q914,-102 840,-102Q796,-102 755,-98"
"L742,-59Q790,-66 836,-66Q871,-66 871,-31L871,504L414,504L414,-102"
"L371,-102ZM203,-94Q138,-94 86,-90L74,-52Q137,-59 188,-59Q211,-59 222,-46"
@ -660,7 +667,7 @@ test_hb_draw_font_kit_variations_tests (void)
"Q823,321 848,281L813,262Q791,301 775,323Q749,288 715,258ZM348,719L348,754"
"L941,754L941,719L348,719ZM936,570Q870,602 817,622"
"Q764,641 727,652L749,688Q852,655 957,605L936,570Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
hb_font_destroy (font);
}
@ -686,8 +693,8 @@ test_hb_draw_font_kit_variations_tests (void)
codepoint = hb_buffer_get_glyph_infos (buffer, NULL)[0].codepoint;
hb_buffer_destroy (buffer);
user_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &draw_data);
char expected[] = "M246,15C188,15 147,27 101,68L142,23L117,117C111,143 96,149 81,149"
"C65,149 56,141 52,126C71,40 137,-13 244,-13C348,-13 436,46 436,156"
"C436,229 405,295 271,349L247,359C160,393 119,439 119,506"
@ -696,7 +703,7 @@ test_hb_draw_font_kit_variations_tests (void)
"C161,665 78,606 78,500C78,414 128,361 224,321L261,305C367,259 395,217 395,152"
"C395,65 334,15 246,15ZM267,331L267,759L240,759L240,331L267,331ZM240,-115"
"L267,-115L267,331L240,331L240,-115Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
}
{
var.value = 500;
@ -710,8 +717,8 @@ test_hb_draw_font_kit_variations_tests (void)
codepoint = hb_buffer_get_glyph_infos (buffer, NULL)[0].codepoint;
hb_buffer_destroy (buffer);
user_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &draw_data);
char expected[] = "M251,36C206,36 165,42 118,61L176,21L161,99C151,152 129,167 101,167"
"C78,167 61,155 51,131C54,43 133,-14 247,-14C388,-14 474,64 474,171"
"C474,258 430,321 294,370L257,383C188,406 150,438 150,499"
@ -720,7 +727,7 @@ test_hb_draw_font_kit_variations_tests (void)
"C450,597 370,656 264,656C140,656 57,576 57,474C57,373 119,318 227,279"
"L263,266C345,236 379,208 379,145C379,76 329,36 251,36ZM289,320"
"L289,746L242,746L242,320L289,320ZM240,-115L286,-115L286,320L240,320L240,-115Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
}
/* substitutes GSUB features depending on variations */
{
@ -735,8 +742,8 @@ test_hb_draw_font_kit_variations_tests (void)
codepoint = hb_buffer_get_glyph_infos (buffer, NULL)[0].codepoint;
hb_buffer_destroy (buffer);
user_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, codepoint, funcs, &draw_data);
char expected[] = "M258,38C197,38 167,48 118,71L192,19L183,103C177,155 155,174 115,174"
"C89,174 64,161 51,125C52,36 124,-16 258,-16C417,-16 513,67 513,175"
"C513,278 457,328 322,388L289,403C232,429 203,452 203,500C203,562 244,589 301,589"
@ -744,7 +751,7 @@ test_hb_draw_font_kit_variations_tests (void)
"C491,590 408,643 290,643C141,643 57,563 57,460C57,357 122,307 233,256L265,241"
"C334,209 363,186 363,130C363,77 320,38 258,38ZM318,616L318,734L252,734L252,616"
"L318,616ZM253,-115L319,-115L319,14L253,14L253,-115Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
}
hb_font_destroy (font);
@ -756,7 +763,7 @@ test_hb_draw_estedad_vf (void)
{
/* https://github.com/harfbuzz/harfbuzz/issues/2215 */
char str[2048];
user_data_t user_data = {
draw_data_t draw_data = {
.str = str,
.size = sizeof (str)
};
@ -770,18 +777,18 @@ test_hb_draw_estedad_vf (void)
hb_variation_from_string ("wght=100", -1, &var);
hb_font_set_variations (font, &var, 1);
user_data.consumed = 0;
hb_font_draw_glyph (font, 156, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 156, funcs, &draw_data);
/* Skip empty path where all the points of a path are equal */
char expected[] = "M150,1158L182,1158Q256,1158 317,1170Q377,1182 421,1213L421,430L521,430"
"L521,1490L421,1490L421,1320Q393,1279 344,1262Q294,1244 182,1244L150,1244"
"L150,1158ZM1815,-122L1669,-122L1669,642L1552,642L1055,-117L1055,-206"
"L1569,-206L1569,-458L1669,-458L1669,-206L1815,-206L1815,-122ZM1569,-122"
"L1166,-122L1569,494L1569,-122ZM609,-79L1639,1288L1555,1334L525,-33L609,-79Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
user_data.consumed = 0;
hb_font_draw_glyph (font, 180, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 180, funcs, &draw_data);
/* Skip empty path where all the points of a path are equal */
char expected2[] = "M120,693Q120,545 177,414Q233,282 333,182Q433,81 567,24"
"Q701,-33 856,-33Q1010,-33 1144,24Q1277,81 1377,182Q1477,282 1534,414"
@ -798,17 +805,17 @@ test_hb_draw_estedad_vf (void)
"M1165,334L973,568Q1065,591 1126,658Q1187,725 1187,819"
"Q1187,896 1147,956Q1106,1015 1037,1049Q969,1083 886,1083"
"L590,1083L590,310L690,310L690,557L860,557L1083,286L1165,334Z";
g_assert_cmpmem (str, user_data.consumed, expected2, sizeof (expected2) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected2, sizeof (expected2) - 1);
user_data.consumed = 0;
hb_font_draw_glyph (font, 262, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 262, funcs, &draw_data);
/* Skip empty path where all the points of a path are equal */
char expected3[] = "M422,598Q495,598 545,548Q595,498 595,426Q595,353 545,303Q494,252 422,252"
"Q350,252 300,303Q250,353 250,426Q250,499 300,549Q349,598 422,598ZM422,698"
"Q347,698 285,662Q223,625 187,564Q150,502 150,426Q150,351 187,289"
"Q223,226 285,189Q346,152 422,152Q498,152 560,189Q622,226 658,288"
"Q695,351 695,426Q695,502 658,563Q621,625 559,661Q498,698 422,698Z";
g_assert_cmpmem (str, user_data.consumed, expected3, sizeof (expected3) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected3, sizeof (expected3) - 1);
hb_font_destroy (font);
}
@ -820,7 +827,7 @@ test_hb_draw_stroking (void)
/* https://skia-review.googlesource.com/c/skia/+/266945
https://savannah.nongnu.org/bugs/index.php?57701 */
char str[2048];
user_data_t user_data = {
draw_data_t draw_data = {
.str = str,
.size = sizeof (str)
};
@ -830,8 +837,8 @@ test_hb_draw_stroking (void)
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
user_data.consumed = 0;
hb_font_draw_glyph (font, 6, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 6, funcs, &draw_data);
/* Skip empty path where all the points of a path are equal */
char expected[] = "M436,1522Q436,1280 531,1060Q625,839 784,680Q943,521 1164,427Q1384,332 1626,332"
"Q1868,332 2089,427Q2309,521 2468,680Q2627,839 2722,1060Q2816,1280 2816,1522"
@ -843,10 +850,10 @@ test_hb_draw_stroking (void)
"Q2996,1342 2947,1165Q2897,987 2809,837Q2721,686 2595,560Q2468,433 2318,345"
"Q2167,257 1990,208Q1812,158 1626,158Q1440,158 1263,208Q1085,257 935,345"
"Q784,433 658,560Q531,686 443,837Q355,987 306,1165Q256,1342 256,1528Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
user_data.consumed = 0;
hb_font_draw_glyph (font, 7, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 7, funcs, &draw_data);
char expected2[] = "M436,1522Q436,1280 531,1060Q625,839 784,680Q943,521 1164,427"
"Q1384,332 1626,332Q1868,332 2089,427Q2309,521 2468,680"
"Q2627,839 2722,1060Q2816,1280 2816,1522Q2816,1764 2722,1985"
@ -861,7 +868,7 @@ test_hb_draw_stroking (void)
"Q1812,158 1626,158Q1440,158 1263,208Q1085,257 935,345"
"Q784,433 658,560Q531,686 443,837Q355,987 306,1165"
"Q256,1342 256,1528Z";
g_assert_cmpmem (str, user_data.consumed, expected2, sizeof (expected2) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected2, sizeof (expected2) - 1);
hb_font_destroy (font);
}
@ -871,21 +878,21 @@ test_hb_draw_stroking (void)
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
user_data.consumed = 0;
hb_font_draw_glyph (font, 4, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 4, funcs, &draw_data);
/* Skip empty path in CFF */
char expected[] = "M106,372C106,532 237,662 397,662C557,662 688,532 688,372C688,212 557,81 397,81C237,81 106,212 106,372Z"
"M62,373C62,188 212,39 397,39C582,39 731,188 731,373C731,558 582,708 397,708C212,708 62,558 62,373Z";
g_assert_cmpmem (str, user_data.consumed, expected, sizeof (expected) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected, sizeof (expected) - 1);
user_data.consumed = 0;
hb_font_draw_glyph (font, 5, funcs, &user_data);
draw_data.consumed = 0;
hb_font_draw_glyph (font, 5, funcs, &draw_data);
/* Fold consequent move-to commands */
char expected2[] = "M106,372C106,532 237,662 397,662C557,662 688,532 688,372"
"C688,212 557,81 397,81C237,81 106,212 106,372ZM62,373"
"C62,188 212,39 397,39C582,39 731,188 731,373"
"C731,558 582,708 397,708C212,708 62,558 62,373Z";
g_assert_cmpmem (str, user_data.consumed, expected2, sizeof (expected2) - 1);
g_assert_cmpmem (str, draw_data.consumed, expected2, sizeof (expected2) - 1);
hb_font_destroy (font);
}
@ -905,18 +912,18 @@ int
main (int argc, char **argv)
{
funcs = hb_draw_funcs_create ();
hb_draw_funcs_set_move_to_func (funcs, (hb_draw_move_to_func_t) move_to);
hb_draw_funcs_set_line_to_func (funcs, (hb_draw_line_to_func_t) line_to);
hb_draw_funcs_set_quadratic_to_func (funcs, (hb_draw_quadratic_to_func_t) quadratic_to);
hb_draw_funcs_set_cubic_to_func (funcs, (hb_draw_cubic_to_func_t) cubic_to);
hb_draw_funcs_set_close_path_func (funcs, (hb_draw_close_path_func_t) close_path);
hb_draw_funcs_set_move_to_func (funcs, (hb_draw_move_to_func_t) move_to, NULL, NULL);
hb_draw_funcs_set_line_to_func (funcs, (hb_draw_line_to_func_t) line_to, NULL, NULL);
hb_draw_funcs_set_quadratic_to_func (funcs, (hb_draw_quadratic_to_func_t) quadratic_to, NULL, NULL);
hb_draw_funcs_set_cubic_to_func (funcs, (hb_draw_cubic_to_func_t) cubic_to, NULL, NULL);
hb_draw_funcs_set_close_path_func (funcs, (hb_draw_close_path_func_t) close_path, NULL, NULL);
hb_draw_funcs_make_immutable (funcs);
funcs2 = hb_draw_funcs_create ();
hb_draw_funcs_set_move_to_func (funcs2, (hb_draw_move_to_func_t) move_to);
hb_draw_funcs_set_line_to_func (funcs2, (hb_draw_line_to_func_t) line_to);
hb_draw_funcs_set_cubic_to_func (funcs2, (hb_draw_cubic_to_func_t) cubic_to);
hb_draw_funcs_set_close_path_func (funcs2, (hb_draw_close_path_func_t) close_path);
hb_draw_funcs_set_move_to_func (funcs2, (hb_draw_move_to_func_t) move_to, NULL, NULL);
hb_draw_funcs_set_line_to_func (funcs2, (hb_draw_line_to_func_t) line_to, NULL, NULL);
hb_draw_funcs_set_cubic_to_func (funcs2, (hb_draw_cubic_to_func_t) cubic_to, NULL, NULL);
hb_draw_funcs_set_close_path_func (funcs2, (hb_draw_close_path_func_t) close_path, NULL, NULL);
hb_draw_funcs_make_immutable (funcs2);
hb_test_init (&argc, &argv);

105
test/fuzzing/hb-draw-fuzzer.cc
View File

@ -5,7 +5,7 @@
#include "hb-fuzzer.hh"
struct _user_data_t
struct _draw_data_t
{
bool is_open;
unsigned path_len;
@ -16,63 +16,72 @@ struct _user_data_t
};
static void
_move_to (float to_x, float to_y, void *user_data_)
_move_to (hb_draw_funcs_t *dfuncs, void *draw_data_,
float to_x, float to_y,
void *user_data)
{
_user_data_t *user_data = (_user_data_t *) user_data_;
assert (!user_data->is_open);
user_data->is_open = true;
user_data->path_start_x = user_data->path_last_x = to_x;
user_data->path_start_y = user_data->path_last_y = to_y;
_draw_data_t *draw_data = (_draw_data_t *) draw_data_;
assert (!draw_data->is_open);
draw_data->is_open = true;
draw_data->path_start_x = draw_data->path_last_x = to_x;
draw_data->path_start_y = draw_data->path_last_y = to_y;
}
static void
_line_to (float to_x, float to_y, void *user_data_)
_line_to (hb_draw_funcs_t *dfuncs, void *draw_data_,
float to_x, float to_y,
void *user_data)
{
_user_data_t *user_data = (_user_data_t *) user_data_;
assert (user_data->is_open);
assert (user_data->path_last_x != to_x || user_data->path_last_y != to_y);
++user_data->path_len;
user_data->path_last_x = to_x;
user_data->path_last_y = to_y;
_draw_data_t *draw_data = (_draw_data_t *) draw_data_;
assert (draw_data->is_open);
assert (draw_data->path_last_x != to_x || draw_data->path_last_y != to_y);
++draw_data->path_len;
draw_data->path_last_x = to_x;
draw_data->path_last_y = to_y;
}
static void
_quadratic_to (float control_x, float control_y,
float to_x, float to_y, void *user_data_)
_quadratic_to (hb_draw_funcs_t *dfuncs, void *draw_data_,
float control_x, float control_y,
float to_x, float to_y,
void *user_data)
{
_user_data_t *user_data = (_user_data_t *) user_data_;
assert (user_data->is_open);
assert (user_data->path_last_x != control_x || user_data->path_last_y != control_y ||
user_data->path_last_x != to_x || user_data->path_last_y != to_y);
++user_data->path_len;
user_data->path_last_x = to_x;
user_data->path_last_y = to_y;
_draw_data_t *draw_data = (_draw_data_t *) draw_data_;
assert (draw_data->is_open);
assert (draw_data->path_last_x != control_x || draw_data->path_last_y != control_y ||
draw_data->path_last_x != to_x || draw_data->path_last_y != to_y);
++draw_data->path_len;
draw_data->path_last_x = to_x;
draw_data->path_last_y = to_y;
}
static void
_cubic_to (float control1_x, float control1_y,
_cubic_to (hb_draw_funcs_t *dfuncs, void *draw_data_,
float control1_x, float control1_y,
float control2_x, float control2_y,
float to_x, float to_y, void *user_data_)
float to_x, float to_y,
void *user_data)
{
_user_data_t *user_data = (_user_data_t *) user_data_;
assert (user_data->is_open);
assert (user_data->path_last_x != control1_x || user_data->path_last_y != control1_y ||
user_data->path_last_x != control2_x || user_data->path_last_y != control2_y ||
user_data->path_last_x != to_x || user_data->path_last_y != to_y);
++user_data->path_len;
user_data->path_last_x = to_x;
user_data->path_last_y = to_y;
_draw_data_t *draw_data = (_draw_data_t *) draw_data_;
assert (draw_data->is_open);
assert (draw_data->path_last_x != control1_x || draw_data->path_last_y != control1_y ||
draw_data->path_last_x != control2_x || draw_data->path_last_y != control2_y ||
draw_data->path_last_x != to_x || draw_data->path_last_y != to_y);
++draw_data->path_len;
draw_data->path_last_x = to_x;
draw_data->path_last_y = to_y;
}
static void
_close_path (void *user_data_)
_close_path (hb_draw_funcs_t *dfuncs, void *draw_data_,
void *user_data)
{
_user_data_t *user_data = (_user_data_t *) user_data_;
assert (user_data->is_open && user_data->path_len != 0);
user_data->path_len = 0;
user_data->is_open = false;
assert (user_data->path_start_x == user_data->path_last_x &&
user_data->path_start_y == user_data->path_last_y);
_draw_data_t *draw_data = (_draw_data_t *) draw_data_;
assert (draw_data->is_open && draw_data->path_len != 0);
draw_data->path_len = 0;
draw_data->is_open = false;
assert (draw_data->path_start_x == draw_data->path_last_x &&
draw_data->path_start_y == draw_data->path_last_y);
}
/* Similar to test-ot-face.c's #test_font() */
@ -133,20 +142,20 @@ extern "C" int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size)
unsigned glyph_count = hb_face_get_glyph_count (face);
glyph_count = glyph_count > 16 ? 16 : glyph_count;
_user_data_t user_data = {false, 0, 0, 0, 0, 0};
_draw_data_t draw_data = {false, 0, 0, 0, 0, 0};
hb_draw_funcs_t *funcs = hb_draw_funcs_create ();
hb_draw_funcs_set_move_to_func (funcs, (hb_draw_move_to_func_t) _move_to);
hb_draw_funcs_set_line_to_func (funcs, (hb_draw_line_to_func_t) _line_to);
hb_draw_funcs_set_quadratic_to_func (funcs, (hb_draw_quadratic_to_func_t) _quadratic_to);
hb_draw_funcs_set_cubic_to_func (funcs, (hb_draw_cubic_to_func_t) _cubic_to);
hb_draw_funcs_set_close_path_func (funcs, (hb_draw_close_path_func_t) _close_path);
hb_draw_funcs_set_move_to_func (funcs, (hb_draw_move_to_func_t) _move_to, nullptr, nullptr);
hb_draw_funcs_set_line_to_func (funcs, (hb_draw_line_to_func_t) _line_to, nullptr, nullptr);
hb_draw_funcs_set_quadratic_to_func (funcs, (hb_draw_quadratic_to_func_t) _quadratic_to, nullptr, nullptr);
hb_draw_funcs_set_cubic_to_func (funcs, (hb_draw_cubic_to_func_t) _cubic_to, nullptr, nullptr);
hb_draw_funcs_set_close_path_func (funcs, (hb_draw_close_path_func_t) _close_path, nullptr, nullptr);
volatile unsigned counter = !glyph_count;
hb_set_t *set = hb_set_create ();
for (unsigned gid = 0; gid < glyph_count; ++gid)
{
hb_font_draw_glyph (font, gid, funcs, &user_data);
assert (!user_data.is_open);
hb_font_draw_glyph (font, gid, funcs, &draw_data);
assert (!draw_data.is_open);
/* Glyph extents also may practices the similar path, call it now that is related */
hb_glyph_extents_t extents;