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flutter/third_party/harfbuzz/refs/heads/main/./test/api/test-paint.c
blob: e63e2638961ddee7bee68f4143d8931eb4376637 [file] [edit]
/*
* 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-test.h"
#include <hb-features.h>
#include <hb-ot.h>
#ifdef HB_HAS_FREETYPE
#include <hb-ft.h>
#if (FREETYPE_MAJOR*10000 + FREETYPE_MINOR*100 + FREETYPE_PATCH) >= 21300
#include FT_COLOR_H
#endif
#endif
static inline hb_bool_t
have_ft_colrv1 (void)
{
#if defined(HB_HAS_FREETYPE) && (FREETYPE_MAJOR*10000 + FREETYPE_MINOR*100 + FREETYPE_PATCH) >= 21300
return TRUE;
#else
return FALSE;
#endif
}
/* Unit tests for hb-paint.h */
/* ---- */
typedef struct {
int level;
GString *string;
} paint_data_t;
static float
clean_float (float v)
{
/* Keep text fixtures stable across backends that may produce -0.f. */
return v == 0.f ? 0.f : v;
}
static void print (paint_data_t *data, const char *format, ...) G_GNUC_PRINTF (2, 3);
static void
print (paint_data_t *data,
const char *format,
...)
{
va_list args;
g_string_append_printf (data->string, "%*s", 2 * data->level, "");
va_start (args, format);
g_string_append_vprintf (data->string, format, args);
va_end (args);
g_string_append (data->string, "\n");
}
static void
push_transform (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
float xx, float yx,
float xy, float yy,
float dx, float dy,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
xx = clean_float (xx);
yx = clean_float (yx);
xy = clean_float (xy);
yy = clean_float (yy);
dx = clean_float (dx);
dy = clean_float (dy);
print (data, "start transform %.3g %.3g %.3g %.3g %.3g %.3g", xx, yx, xy, yy, dx, dy);
data->level++;
}
static void
pop_transform (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
data->level--;
print (data, "end transform");
}
static void
fill_glyph (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
hb_codepoint_t glyph,
hb_font_t *font HB_UNUSED,
hb_bool_t use_foreground HB_UNUSED,
hb_color_t color,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
print (data, "fill glyph %u solid %d %d %d %d", glyph,
hb_color_get_red (color),
hb_color_get_green (color),
hb_color_get_blue (color),
hb_color_get_alpha (color));
}
static hb_bool_t
paint_color_glyph (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
hb_codepoint_t glyph,
hb_font_t *font HB_UNUSED,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
print (data, "paint color glyph %u; acting as failed", glyph);
return FALSE;
}
static void
push_clip_glyph (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
hb_codepoint_t glyph,
hb_font_t *font HB_UNUSED,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
print (data, "start clip glyph %u", glyph);
data->level++;
}
static void
push_clip_rectangle (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
float xmin, float ymin, float xmax, float ymax,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
print (data, "start clip rectangle %.3g %.3g %.3g %.3g", xmin, ymin, xmax, ymax);
data->level++;
}
static void
pop_clip (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
data->level--;
print (data, "end clip");
}
static void
paint_color (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
hb_bool_t use_foreground HB_UNUSED,
hb_color_t color,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
print (data, "solid %d %d %d %d",
hb_color_get_red (color),
hb_color_get_green (color),
hb_color_get_blue (color),
hb_color_get_alpha (color));
}
static hb_bool_t
paint_image (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
hb_blob_t *blob HB_UNUSED,
unsigned int width,
unsigned int height,
hb_tag_t format,
float slant,
hb_glyph_extents_t *extents,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
char buf[5] = { 0, };
hb_tag_to_string (format, buf);
print (data, "image type %s size %u %u slant %.3g extents %d %d %d %d\n",
buf, width, height, slant,
extents->x_bearing, extents->y_bearing, extents->width, extents->height);
return TRUE;
}
static void
print_color_stops (paint_data_t *data,
hb_paint_extend_t extend,
hb_color_stop_t *stops,
unsigned int len)
{
print (data, "colors %d", extend);
data->level += 1;
for (unsigned int i = 0; i < len; i++)
print (data, "%.3g %d %d %d %d",
stops[i].offset,
hb_color_get_red (stops[i].color),
hb_color_get_green (stops[i].color),
hb_color_get_blue (stops[i].color),
hb_color_get_alpha (stops[i].color));
data->level -= 1;
}
static void
print_color_line (paint_data_t *data,
hb_color_line_t *color_line)
{
hb_color_stop_t *stops;
unsigned int len;
len = hb_color_line_get_color_stops (color_line, 0, NULL, NULL);
stops = malloc (len * sizeof (hb_color_stop_t));
hb_color_line_get_color_stops (color_line, 0, &len, stops);
print_color_stops (data, hb_color_line_get_extend (color_line), stops, len);
free (stops);
}
static void
paint_linear_gradient (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
hb_color_line_t *color_line,
float x0, float y0,
float x1, float y1,
float x2, float y2,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
float xx0, yy0, xx1, yy1;
float xxx0, yyy0, xxx1, yyy1;
float min, max;
hb_color_stop_t *stops;
unsigned int len;
hb_paint_reduce_linear_anchors (x0, y0, x1, y1, x2, y2,
&xx0, &yy0, &xx1, &yy1);
len = hb_color_line_get_color_stops (color_line, 0, NULL, NULL);
stops = malloc (len * sizeof (hb_color_stop_t));
hb_color_line_get_color_stops (color_line, 0, &len, stops);
hb_paint_normalize_color_line (stops, len, &min, &max);
xxx0 = xx0 + min * (xx1 - xx0);
yyy0 = yy0 + min * (yy1 - yy0);
xxx1 = xx0 + max * (xx1 - xx0);
yyy1 = yy0 + max * (yy1 - yy0);
print (data, "linear gradient");
data->level += 1;
print (data, "p0 %.3g %.3g", xxx0, yyy0);
print (data, "p1 %.3g %.3g", xxx1, yyy1);
print_color_stops (data, hb_color_line_get_extend (color_line), stops, len);
data->level -= 1;
free (stops);
}
static void
paint_radial_gradient (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
hb_color_line_t *color_line,
float x0, float y0, float r0,
float x1, float y1, float r1,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
print (data, "radial gradient");
data->level += 1;
print (data, "p0 %.3g %.3g radius %.3g", x0, y0, r0);
print (data, "p1 %.3g %.3g radius %.3g", x1, y1, r1);
print_color_line (data, color_line);
data->level -= 1;
}
static void
paint_sweep_gradient (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
hb_color_line_t *color_line,
float cx, float cy,
float start_angle,
float end_angle,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
print (data, "sweep gradient");
data->level++;
print (data, "center %.3g %.3g", cx, cy);
print (data, "angles %.3g %.3g", start_angle, end_angle);
print_color_line (data, color_line);
data->level -= 1;
}
static void
push_group (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
print (data, "push group");
data->level++;
}
static void
pop_group (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
hb_paint_composite_mode_t mode,
void *user_data HB_UNUSED)
{
paint_data_t *data = paint_data;
data->level--;
print (data, "pop group mode %d", mode);
}
static hb_paint_funcs_t *
get_test_paint_funcs (void)
{
static hb_paint_funcs_t *funcs = NULL;
if (!funcs)
{
funcs = hb_paint_funcs_create ();
hb_paint_funcs_set_push_transform_func (funcs, push_transform, NULL, NULL);
hb_paint_funcs_set_pop_transform_func (funcs, pop_transform, NULL, NULL);
hb_paint_funcs_set_fill_glyph_func (funcs, fill_glyph, NULL, NULL);
hb_paint_funcs_set_color_glyph_func (funcs, paint_color_glyph, NULL, NULL);
hb_paint_funcs_set_push_clip_glyph_func (funcs, push_clip_glyph, NULL, NULL);
hb_paint_funcs_set_push_clip_rectangle_func (funcs, push_clip_rectangle, NULL, NULL);
hb_paint_funcs_set_pop_clip_func (funcs, pop_clip, NULL, NULL);
hb_paint_funcs_set_push_group_func (funcs, push_group, NULL, NULL);
hb_paint_funcs_set_pop_group_func (funcs, pop_group, NULL, NULL);
hb_paint_funcs_set_color_func (funcs, paint_color, NULL, NULL);
hb_paint_funcs_set_image_func (funcs, paint_image, NULL, NULL);
hb_paint_funcs_set_linear_gradient_func (funcs, paint_linear_gradient, NULL, NULL);
hb_paint_funcs_set_radial_gradient_func (funcs, paint_radial_gradient, NULL, NULL);
hb_paint_funcs_set_sweep_gradient_func (funcs, paint_sweep_gradient, NULL, NULL);
hb_paint_funcs_make_immutable (funcs);
}
return funcs;
}
typedef struct {
const char *font_file;
float slant;
hb_codepoint_t glyph;
unsigned int palette;
const char *output;
} paint_test_t;
#define NOTO_HAND "fonts/noto_handwriting-cff2_colr_1.otf"
#define TEST_GLYPHS "fonts/test_glyphs-glyf_colr_1.ttf"
#define TEST_GLYPHS_VF "fonts/test_glyphs-glyf_colr_1_variable.ttf"
#define BAD_COLRV1 "fonts/bad_colrv1.ttf"
#define ROCHER_ABC "fonts/RocherColorGX.abc.ttf"
/* To verify the rendering visually, use
*
* hb-view --font-slant SLANT --font-palette PALETTE FONT --glyphs gidGID
*
* where GID is the glyph value of the test.
*/
static paint_test_t paint_tests[] = {
/* COLRv1 */
{ NOTO_HAND, 0., 10, 0, "hand-10" },
{ NOTO_HAND, 0.2f,10, 0, "hand-10.2" },
{ TEST_GLYPHS, 0, 6, 0, "test-6" }, // linear gradient
{ TEST_GLYPHS, 0, 10, 0, "test-10" }, // sweep gradient
{ TEST_GLYPHS, 0, 92, 0, "test-92" }, // radial gradient
{ TEST_GLYPHS, 0, 106, 0, "test-106" },
{ TEST_GLYPHS, 0, 116, 0, "test-116" }, // compositing
{ TEST_GLYPHS, 0, 123, 0, "test-123" },
{ TEST_GLYPHS, 0, 154, 0, "test-154" },
{ TEST_GLYPHS, 0, 165, 0, "test-165" }, // linear gradient
{ TEST_GLYPHS, 0, 175, 0, "test-175" }, // layers
{ TEST_GLYPHS_VF, 0, 6, 0, "testvf-6" },
{ TEST_GLYPHS_VF, 0, 10, 0, "testvf-10" },
{ TEST_GLYPHS_VF, 0, 92, 0, "testvf-92" },
{ TEST_GLYPHS_VF, 0, 106, 0, "testvf-106" },
{ TEST_GLYPHS_VF, 0, 116, 0, "testvf-116" },
{ TEST_GLYPHS_VF, 0, 123, 0, "testvf-123" },
{ TEST_GLYPHS_VF, 0, 154, 0, "testvf-154" },
{ TEST_GLYPHS_VF, 0, 165, 0, "testvf-165" },
{ TEST_GLYPHS_VF, 0, 175, 0, "testvf-175" },
{ BAD_COLRV1, 0, 154, 0, "bad-154" }, // recursion
/* COLRv0 */
{ ROCHER_ABC, 0.3f, 1, 0, "rocher-1" },
{ ROCHER_ABC, 0.3f, 2, 2, "rocher-2" },
{ ROCHER_ABC, 0, 3, 200, "rocher-3" },
};
static void
test_hb_paint (gconstpointer d,
hb_bool_t use_ft HB_UNUSED)
{
const paint_test_t *test = d;
hb_face_t *face;
hb_font_t *font;
hb_paint_funcs_t *funcs;
paint_data_t data;
char *file;
char *buffer;
gsize len;
GError *error = NULL;
face = hb_test_open_font_file (test->font_file);
font = hb_font_create (face);
hb_font_set_synthetic_slant (font, test->slant);
#ifdef HB_HAS_FREETYPE
if (use_ft)
hb_ft_font_set_funcs (font);
#endif
funcs = get_test_paint_funcs ();
data.string = g_string_new ("");
data.level = 0;
hb_font_paint_glyph (font, test->glyph, funcs, &data, 0, HB_COLOR (0, 0, 0, 255));
/* Run
*
* GENERATE_DATA=1 G_TEST_SRCDIR=./test/api ./build/test/api/test-paint
*
* to regenerate the expected output for all tests.
*/
file = g_test_build_filename (G_TEST_DIST, "results-paint", test->output, NULL);
if (getenv ("GENERATE_DATA"))
{
if (!g_file_set_contents (file, data.string->str, data.string->len, NULL))
g_error ("Failed to write %s.", file);
return;
}
if (!g_file_get_contents (file, &buffer, &len, &error))
{
g_test_message ("File %s not found.", file);
g_test_fail ();
return;
}
char **lines = g_strsplit (data.string->str, "\n", 0);
char **expected;
if (strstr (buffer, "\r\n"))
expected = g_strsplit (buffer, "\r\n", 0);
else
expected = g_strsplit (buffer, "\n", 0);
if (g_strv_length (lines) != g_strv_length (expected))
{
g_test_message ("Unexpected number of lines in output (%d instead of %d):\n%s", g_strv_length (lines), g_strv_length (expected), data.string->str);
g_test_fail ();
}
else
{
unsigned int length = g_strv_length (lines);
for (unsigned int i = 0; i < length; i++)
{
if (strcmp (lines[i], expected[i]) != 0)
{
int pos;
for (pos = 0; lines[i][pos]; pos++)
if (lines[i][pos] != expected[i][pos])
break;
g_test_message ("Unexpected output at %d:%d (%c instead of %c):\n%s", i, pos, lines[i][pos], expected[i][pos], data.string->str);
g_test_fail ();
}
}
}
g_strfreev (lines);
g_strfreev (expected);
g_free (buffer);
g_free (file);
g_string_free (data.string, TRUE);
hb_font_destroy (font);
hb_face_destroy (face);
}
static void
test_compare_to_ot (const char *file, hb_codepoint_t glyph)
{
hb_face_t *face;
hb_font_t *font;
hb_paint_funcs_t *funcs;
GString *ot_str;
paint_data_t data;
face = hb_test_open_font_file (file);
font = hb_font_create (face);
funcs = get_test_paint_funcs ();
data.string = g_string_new ("");
data.level = 0;
hb_font_paint_glyph (font, glyph, funcs, &data, 0, HB_COLOR (0, 0, 0, 255));
g_assert_true (data.level == 0);
ot_str = data.string;
#ifdef HB_HAS_FREETYPE
hb_ft_font_set_funcs (font);
#endif
data.string = g_string_new ("");
data.level = 0;
hb_font_paint_glyph (font, glyph, funcs, &data, 0, HB_COLOR (0, 0, 0, 255));
g_assert_true (data.level == 0);
g_assert_cmpstr (ot_str->str, ==, data.string->str);
g_string_free (data.string, TRUE);
hb_font_destroy (font);
hb_face_destroy (face);
g_string_free (ot_str, TRUE);
}
static void
test_hb_paint_ot (gconstpointer data)
{
test_hb_paint (data, 0);
}
static void
test_hb_paint_ft (gconstpointer data)
{
if (have_ft_colrv1 ())
test_hb_paint (data, 1);
else
g_test_skip ("FreeType COLRv1 support not present");
}
static void
test_compare_to_ot_novf (gconstpointer d)
{
test_compare_to_ot (TEST_GLYPHS, GPOINTER_TO_UINT (d));
}
static void
test_compare_to_ot_vf (gconstpointer d)
{
test_compare_to_ot (TEST_GLYPHS_VF, GPOINTER_TO_UINT (d));
}
static void
scrutinize_linear_gradient (hb_paint_funcs_t *funcs HB_UNUSED,
void *paint_data,
hb_color_line_t *color_line,
float x0 HB_UNUSED, float y0 HB_UNUSED,
float x1 HB_UNUSED, float y1 HB_UNUSED,
float x2 HB_UNUSED, float y2 HB_UNUSED,
void *user_data HB_UNUSED)
{
hb_bool_t *result = paint_data;
hb_color_stop_t *stops;
unsigned int len;
hb_color_stop_t *stops2;
unsigned int len2;
*result = FALSE;
len = hb_color_line_get_color_stops (color_line, 0, NULL, NULL);
if (len == 0)
return;
stops = malloc (len * sizeof (hb_color_stop_t));
stops2 = malloc (len * sizeof (hb_color_stop_t));
hb_color_line_get_color_stops (color_line, 0, &len, stops);
hb_color_line_get_color_stops (color_line, 0, &len, stops2);
// check that we can get stops twice
if (memcmp (stops, stops2, len * sizeof (hb_color_stop_t)) != 0)
{
free (stops);
free (stops2);
return;
}
// check that we can get a single stop in the middle
len2 = 1;
hb_color_line_get_color_stops (color_line, len - 1, &len2, stops2);
if (memcmp (&stops[len - 1], stops2, sizeof (hb_color_stop_t)) != 0)
{
free (stops);
free (stops2);
return;
}
free (stops);
free (stops2);
*result = TRUE;
}
static void
test_color_stops (hb_bool_t use_ft HB_UNUSED)
{
hb_face_t *face;
hb_font_t *font;
hb_paint_funcs_t *funcs;
hb_bool_t result = FALSE;
face = hb_test_open_font_file (NOTO_HAND);
font = hb_font_create (face);
#ifdef HB_HAS_FREETYPE
if (use_ft)
hb_ft_font_set_funcs (font);
#endif
funcs = hb_paint_funcs_create ();
hb_paint_funcs_set_linear_gradient_func (funcs, scrutinize_linear_gradient, NULL, NULL);
hb_font_paint_glyph (font, 10, funcs, &result, 0, HB_COLOR (0, 0, 0, 255));
g_assert_true (result);
hb_paint_funcs_destroy (funcs);
hb_font_destroy (font);
hb_face_destroy (face);
}
static void
test_color_stops_ot (void)
{
test_color_stops (0);
}
static void
test_color_stops_ft (void)
{
if (have_ft_colrv1 ())
test_color_stops (1);
else
g_test_skip ("FreeType COLRv1 support not present");
}
/* ── Arbitrary-path clip API (push_clip_path_start/_end) ─────────── */
static void
test_push_clip_path_nil_returns_null (void)
{
/* Unset callbacks fall through to nil stubs; start must return
* NULL + clear draw_data so callers know the backend can't do
* arbitrary-path clipping. */
hb_paint_funcs_t *funcs = hb_paint_funcs_create ();
void *draw_data = (void *) 0xdeadbeef;
hb_draw_funcs_t *df = hb_paint_push_clip_path_start (funcs, NULL, &draw_data);
g_assert_null (df);
g_assert_null (draw_data);
/* end is a no-op on the nil stub. */
hb_paint_push_clip_path_end (funcs, NULL);
/* Also: NULL draw_data must be accepted; the entry point routes
* it through an internal scratch. */
df = hb_paint_push_clip_path_start (funcs, NULL, NULL);
g_assert_null (df);
hb_paint_funcs_destroy (funcs);
}
typedef struct
{
int move_to_calls;
int line_to_calls;
int close_path_calls;
float last_x, last_y;
hb_bool_t start_called;
hb_bool_t end_called;
int pop_clip_calls;
hb_draw_funcs_t *start_draw_funcs_out;
} clip_path_rec_t;
static void
clip_path_sink_move_to (hb_draw_funcs_t *funcs HB_UNUSED,
void *draw_data,
hb_draw_state_t *st HB_UNUSED,
float x, float y,
void *user_data HB_UNUSED)
{
clip_path_rec_t *r = (clip_path_rec_t *) draw_data;
r->move_to_calls++;
r->last_x = x; r->last_y = y;
}
static void
clip_path_sink_line_to (hb_draw_funcs_t *funcs HB_UNUSED,
void *draw_data,
hb_draw_state_t *st HB_UNUSED,
float x, float y,
void *user_data HB_UNUSED)
{
clip_path_rec_t *r = (clip_path_rec_t *) draw_data;
r->line_to_calls++;
r->last_x = x; r->last_y = y;
}
static void
clip_path_sink_close_path (hb_draw_funcs_t *funcs HB_UNUSED,
void *draw_data,
hb_draw_state_t *st HB_UNUSED,
void *user_data HB_UNUSED)
{
clip_path_rec_t *r = (clip_path_rec_t *) draw_data;
r->close_path_calls++;
}
static hb_draw_funcs_t *
clip_path_start_cb (hb_paint_funcs_t *pfuncs HB_UNUSED,
void *paint_data,
void **draw_data,
void *user_data HB_UNUSED)
{
clip_path_rec_t *r = (clip_path_rec_t *) paint_data;
r->start_called = TRUE;
*draw_data = r;
return r->start_draw_funcs_out;
}
static void
clip_path_end_cb (hb_paint_funcs_t *pfuncs HB_UNUSED,
void *paint_data,
void *user_data HB_UNUSED)
{
clip_path_rec_t *r = (clip_path_rec_t *) paint_data;
r->end_called = TRUE;
}
static void
clip_path_pop_clip_cb (hb_paint_funcs_t *pfuncs HB_UNUSED,
void *paint_data,
void *user_data HB_UNUSED)
{
clip_path_rec_t *r = (clip_path_rec_t *) paint_data;
r->pop_clip_calls++;
}
/* Round-trip: registered start/end fire in order, the returned
* draw-funcs + draw-data propagate to the caller, and every
* hb_draw_*() call on those funcs reaches the accumulator. */
static void
test_push_clip_path_round_trip (void)
{
hb_draw_funcs_t *sink = hb_draw_funcs_create ();
hb_draw_funcs_set_move_to_func (sink, clip_path_sink_move_to, NULL, NULL);
hb_draw_funcs_set_line_to_func (sink, clip_path_sink_line_to, NULL, NULL);
hb_draw_funcs_set_close_path_func (sink, clip_path_sink_close_path, NULL, NULL);
hb_draw_funcs_make_immutable (sink);
clip_path_rec_t r = {0};
r.start_draw_funcs_out = sink;
hb_paint_funcs_t *pfuncs = hb_paint_funcs_create ();
hb_paint_funcs_set_push_clip_path_start_func (pfuncs, clip_path_start_cb, NULL, NULL);
hb_paint_funcs_set_push_clip_path_end_func (pfuncs, clip_path_end_cb, NULL, NULL);
hb_paint_funcs_set_pop_clip_func (pfuncs, clip_path_pop_clip_cb, NULL, NULL);
hb_paint_funcs_make_immutable (pfuncs);
void *draw_data = NULL;
hb_draw_funcs_t *df = hb_paint_push_clip_path_start (pfuncs, &r, &draw_data);
g_assert_true (r.start_called);
g_assert_nonnull (df);
g_assert_true (df == sink);
g_assert_true (draw_data == &r);
hb_draw_state_t st = HB_DRAW_STATE_DEFAULT;
hb_draw_move_to (df, draw_data, &st, 1.f, 2.f);
hb_draw_line_to (df, draw_data, &st, 3.f, 4.f);
hb_draw_line_to (df, draw_data, &st, 5.f, 6.f);
hb_draw_close_path (df, draw_data, &st);
g_assert_cmpint (r.move_to_calls, ==, 1);
/* hb_draw_close_path synthesizes a line_to back to the contour
* start, so our two explicit line_tos show up as three. */
g_assert_cmpint (r.line_to_calls, ==, 3);
g_assert_cmpint (r.close_path_calls, ==, 1);
/* The synthetic closing line_to took the pen back to the
* move_to point (1, 2). */
g_assert_cmpfloat (r.last_x, ==, 1.f);
g_assert_cmpfloat (r.last_y, ==, 2.f);
hb_paint_push_clip_path_end (pfuncs, &r);
g_assert_true (r.end_called);
hb_paint_pop_clip (pfuncs, &r);
g_assert_cmpint (r.pop_clip_calls, ==, 1);
hb_paint_funcs_destroy (pfuncs);
hb_draw_funcs_destroy (sink);
}
/* Test the default implementation of fill_glyph does the
* push_clip_glyph + color + pop_clip sequence. */
static void
test_fill_glyph_nil_decomposes (void)
{
hb_paint_funcs_t *funcs = hb_paint_funcs_create ();
hb_paint_funcs_set_push_clip_glyph_func (funcs, push_clip_glyph, NULL, NULL);
hb_paint_funcs_set_color_func (funcs, paint_color, NULL, NULL);
hb_paint_funcs_set_pop_clip_func (funcs, pop_clip, NULL, NULL);
hb_paint_funcs_make_immutable (funcs);
paint_data_t data;
data.string = g_string_new ("");
data.level = 0;
hb_paint_fill_glyph (funcs, &data, 42, hb_font_get_empty (),
FALSE, HB_COLOR (1, 2, 3, 4));
g_assert_true (data.level == 0);
g_assert_cmpstr (data.string->str, ==,
"start clip glyph 42\n"
" solid 3 2 1 4\n"
"end clip\n");
g_string_free (data.string, TRUE);
hb_paint_funcs_destroy (funcs);
}
int
main (int argc, char **argv)
{
int status = 0;
hb_test_init (&argc, &argv);
/* Register font-free API tests first so the missing-font bail
* below doesn't prevent them from running. */
hb_test_add (test_push_clip_path_nil_returns_null);
hb_test_add (test_push_clip_path_round_trip);
hb_test_add (test_fill_glyph_nil_decomposes);
for (unsigned int i = 0; i < G_N_ELEMENTS (paint_tests); i++)
{
hb_test_add_data_flavor (&paint_tests[i], paint_tests[i].output, test_hb_paint_ot);
hb_test_add_data_flavor (&paint_tests[i], paint_tests[i].output, test_hb_paint_ft);
}
hb_face_t *face = hb_test_open_font_file (TEST_GLYPHS);
unsigned glyph_count = hb_face_get_glyph_count (face);
const char **font_funcs = hb_font_list_funcs ();
for (const char **font_func = font_funcs; *font_func; font_func++)
{
if (strcmp (*font_func, "ot") == 0)
continue;
if (!have_ft_colrv1 () && strcmp (*font_func, "ft") == 0)
continue;
for (unsigned int i = 1; i < glyph_count; i++)
{
char buf[32];
snprintf (buf, 32, "test-%s-%u", *font_func, i);
hb_test_add_data_flavor (GUINT_TO_POINTER (i), buf, test_compare_to_ot_novf);
hb_test_add_data_flavor (GUINT_TO_POINTER (i), buf, test_compare_to_ot_vf);
}
}
hb_face_destroy (face);
hb_test_add (test_color_stops_ot);
hb_test_add (test_color_stops_ft);
status = hb_test_run();
return status;
}