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gsk: Add tests for GskPath

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This commit is contained in:
Matthias Clasen 2023-07-08 11:32:47 -04:00
parent a4cbabb80f
commit 785b9541f6
3 changed files with 1033 additions and 0 deletions
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2
testsuite/gsk/meson.build
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@ -359,6 +359,8 @@ endforeach
tests = [
['transform'],
['shader'],
['path'],
['path-special-cases'],
]
test_cargs = []

436
testsuite/gsk/path-special-cases.c Normal file
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@ -0,0 +1,436 @@
/*
* Copyright © 2020 Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include <gtk/gtk.h>
/* testcases from path_parser.rs in librsvg */
static void
test_rsvg_parse (void)
{
struct {
const char *in;
const char *out;
} tests[] = {
{ "", "" },
// numbers
{ "M 10 20", "M 10 20" },
{ "M -10 -20", "M -10 -20" },
{ "M .10 0.20", "M 0.1 0.2" },
{ "M -.10 -0.20", "M -0.1 -0.2" },
{ "M-.10-0.20", "M -0.1 -0.2" },
{ "M10.5.50", "M 10.5 0.5" },
{ "M.10.20", "M 0.1 0.2" },
{ "M .10E1 .20e-4", "M 1 2e-05" },
{ "M-.10E1-.20", "M -1 -0.2" },
{ "M10.10E2 -0.20e3", "M 1010 -200" },
{ "M-10.10E2-0.20e-3", "M -1010 -0.0002" },
{ "M1e2.5", "M 100 0.5" },
{ "M1e-2.5", "M 0.01 0.5" },
{ "M1e+2.5", "M 100 0.5" },
// bogus numbers
{ "M+", NULL },
{ "M-", NULL },
{ "M+x", NULL },
{ "M10e", NULL },
{ "M10ex", NULL },
{ "M10e-", NULL },
{ "M10e+x", NULL },
// numbers with comma
{ "M 10, 20", "M 10 20" },
{ "M -10,-20", "M -10 -20" },
{ "M.10 , 0.20", "M 0.1 0.2" },
{ "M -.10, -0.20 ", "M -0.1 -0.2" },
{ "M-.10-0.20", "M -0.1 -0.2" },
{ "M.10.20", "M 0.1 0.2" },
{ "M .10E1,.20e-4", "M 1 2e-05" },
{ "M-.10E-2,-.20", "M -0.001 -0.2" },
{ "M10.10E2,-0.20e3", "M 1010 -200" },
{ "M-10.10E2,-0.20e-3", "M -1010 -0.0002" },
// single moveto
{ "M 10 20 ", "M 10 20" },
{ "M10,20 ", "M 10 20" },
{ "M10 20 ", "M 10 20" },
{ " M10,20 ", "M 10 20" },
// relative moveto
{ "m10 20", "M 10 20" },
// absolute moveto with implicit lineto
{ "M10 20 30 40", "M 10 20 L 30 40" },
{ "M10,20,30,40", "M 10 20 L 30 40" },
{ "M.1-2,3E2-4", "M 0.1 -2 L 300 -4" },
// relative moveto with implicit lineto
{ "m10 20 30 40", "M 10 20 L 40 60" },
// relative moveto with relative lineto sequence
{ "m 46,447 l 0,0.5 -1,0 -1,0 0,1 0,12",
"M 46 447 L 46 447.5 L 45 447.5 L 44 447.5 L 44 448.5 L 44 460.5" },
// absolute moveto with implicit linetos
{ "M10,20 30,40,50 60", "M 10 20 L 30 40 L 50 60" },
// relative moveto with implicit linetos
{ "m10 20 30 40 50 60", "M 10 20 L 40 60 L 90 120" },
// absolute moveto moveto
{ "M10 20 M 30 40", "M 10 20 M 30 40" },
// relative moveto moveto
{ "m10 20 m 30 40", "M 10 20 M 40 60" },
// relative moveto lineto moveto
{ "m10 20 30 40 m 50 60", "M 10 20 L 40 60 M 90 120" },
// absolute moveto lineto
{ "M10 20 L30,40", "M 10 20 L 30 40" },
// relative moveto lineto
{ "m10 20 l30,40", "M 10 20 L 40 60" },
// relative moveto lineto lineto abs lineto
{ "m10 20 30 40l30,40,50 60L200,300",
"M 10 20 L 40 60 L 70 100 L 120 160 L 200 300" },
// horizontal lineto
{ "M10 20 H30", "M 10 20 L 30 20" },
{ "M 10 20 H 30 40", "M 10 20 L 30 20 L 40 20" },
{ "M10 20 H30,40-50", "M 10 20 L 30 20 L 40 20 L -50 20" },
{ "m10 20 h30,40-50", "M 10 20 L 40 20 L 80 20 L 30 20" },
// vertical lineto
{ "M10 20 V30", "M 10 20 L 10 30" },
{ "M10 20 V30 40", "M 10 20 L 10 30 L 10 40" },
{ "M10 20 V30,40-50", "M 10 20 L 10 30 L 10 40 L 10 -50" },
{ "m10 20 v30,40-50", "M 10 20 L 10 50 L 10 90 L 10 40" },
// curveto
{ "M10 20 C 30,40 50 60-70,80", "M 10 20 C 30 40, 50 60, -70 80" },
{ "M10 20 C 30,40 50 60-70,80,90 100,110 120,130,140",
"M 10 20 C 30 40, 50 60, -70 80 C 90 100, 110 120, 130 140" },
{ "m10 20 c 30,40 50 60-70,80,90 100,110 120,130,140",
"M 10 20 C 40 60, 60 80, -60 100 C 30 200, 50 220, 70 240" },
{ "m10 20 c 30,40 50 60-70,80 90 100,110 120,130,140",
"M 10 20 C 40 60, 60 80, -60 100 C 30 200, 50 220, 70 240" },
// smooth curveto
{ "M10 20 S 30,40-50,60", "M 10 20 C 10 20, 30 40, -50 60" },
{ "M10 20 S 30,40 50 60-70,80,90 100",
"M 10 20 C 10 20, 30 40, 50 60 C 70 80, -70 80, 90 100" },
// quadratic curveto
{ "M10 20 Q30 40 50 60", "M 10 20 Q 30 40, 50 60" },
{ "M10 20 Q30 40 50 60,70,80-90 100",
"M 10 20 Q 30 40, 50 60 Q 70 80, -90 100" },
{ "m10 20 q 30,40 50 60-70,80 90 100",
"M 10 20 Q 40 60, 60 80 Q -10 160, 150 180" },
// smooth quadratic curveto
{ "M10 20 T30 40", "M 10 20 Q 10 20, 30 40" },
{ "M10 20 Q30 40 50 60 T70 80", "M 10 20 Q 30 40, 50 60 Q 70 80, 70 80" },
{ "m10 20 q 30,40 50 60t-70,80",
"M 10 20 Q 40 60, 60 80 Q 80 100, -10 160" },
// elliptical arc. Exact numbers depend on too much math, so just verify
// that these parse successfully
{ "M 1 3 A 1 2 3 00 6 7", "path" },
{ "M 1 2 A 1 2 3 016 7", "path" },
{ "M 1 2 A 1 2 3 10,6 7", "path" },
{ "M 1 2 A 1 2 3 1,1 6 7", "path" },
{ "M 1 2 A 1 2 3 1 1 6 7", "path" },
{ "M 1 2 A 1 2 3 1 16 7", "path" },
// close path
{ "M10 20 Z", "M 10 20 Z" },
{ "m10 20 30 40 m 50 60 70 80 90 100z", "M 10 20 L 40 60 M 90 120 L 160 200 L 250 300 Z" },
// must start with moveto
{ " L10 20", NULL },
// moveto args
{ "M", NULL },
{ "M,", NULL },
{ "M10", NULL },
{ "M10,", NULL },
{ "M10x", NULL },
{ "M10,x", NULL },
{ "M10-20,", NULL },
{ "M10-20-30", NULL },
{ "M10-20-30 x", NULL },
// closepath args
{ "M10-20z10", NULL },
{ "M10-20z,", NULL },
// lineto args
{ "M10-20L10", NULL },
{ "M 10,10 L 20,20,30", NULL },
{ "M 10,10 L 20,20,", NULL },
// horizontal lineto args
{ "M10-20H", NULL },
{ "M10-20H,", NULL },
{ "M10-20H30,", NULL },
// vertical lineto args
{ "M10-20v", NULL },
{ "M10-20v,", NULL },
{ "M10-20v30,", NULL },
// curveto args
{ "M10-20C1", NULL },
{ "M10-20C1,", NULL },
{ "M10-20C1 2", NULL },
{ "M10-20C1,2,", NULL },
{ "M10-20C1 2 3", NULL },
{ "M10-20C1,2,3", NULL },
{ "M10-20C1,2,3,", NULL },
{ "M10-20C1 2 3 4", NULL },
{ "M10-20C1,2,3,4", NULL },
{ "M10-20C1,2,3,4,", NULL },
{ "M10-20C1 2 3 4 5", NULL },
{ "M10-20C1,2,3,4,5", NULL },
{ "M10-20C1,2,3,4,5,", NULL },
{ "M10-20C1,2,3,4,5,6,", NULL },
// smooth curveto args
{ "M10-20S1", NULL },
{ "M10-20S1,", NULL },
{ "M10-20S1 2", NULL },
{ "M10-20S1,2,", NULL },
{ "M10-20S1 2 3", NULL },
{ "M10-20S1,2,3,", NULL },
{ "M10-20S1,2,3,4,", NULL },
// quadratic curveto args
{ "M10-20Q1", NULL },
{ "M10-20Q1,", NULL },
{ "M10-20Q1 2", NULL },
{ "M10-20Q1,2,", NULL },
{ "M10-20Q1 2 3", NULL },
{ "M10-20Q1,2,3", NULL },
{ "M10-20Q1,2,3,", NULL },
{ "M10 20 Q30 40 50 60,", NULL },
// smooth quadratic curveto args
{ "M10-20T1", NULL },
{ "M10-20T1,", NULL },
{ "M10 20 T 30 40,", NULL },
// elliptical arc args
{ "M10-20A1", NULL },
{ "M10-20A1,", NULL },
{ "M10-20A1 2", NULL },
{ "M10-20A1 2,", NULL },
{ "M10-20A1 2 3", NULL },
{ "M10-20A1 2 3,", NULL },
{ "M10-20A1 2 3 4", NULL },
{ "M10-20A1 2 3 1", NULL },
{ "M10-20A1 2 3,1,", NULL },
{ "M10-20A1 2 3 1 5", NULL },
{ "M10-20A1 2 3 1 1", NULL },
{ "M10-20A1 2 3,1,1,", NULL },
{ "M10-20A1 2 3 1 1 6", NULL },
{ "M10-20A1 2 3,1,1,6,", NULL },
{ "M 1 2 A 1 2 3 1.0 0.0 6 7", NULL },
{ "M10-20A1 2 3,1,1,6,7,", NULL },
// misc
{ "M.. 1,0 0,100000", NULL },
{ "M 10 20,M 10 20", NULL },
{ "M 10 20, M 10 20", NULL },
{ "M 10 20, M 10 20", NULL },
{ "M 10 20, ", NULL },
};
int i;
for (i = 0; i < G_N_ELEMENTS (tests); i++)
{
GskPath *path;
char *string;
char *string2;
if (g_test_verbose ())
g_print ("%d: %s\n", i, tests[i].in);
path = gsk_path_parse (tests[i].in);
if (tests[i].out)
{
g_assert_nonnull (path);
string = gsk_path_to_string (path);
gsk_path_unref (path);
if (strcmp (tests[i].out, "path") != 0)
{
/* Preferred, but doesn't work, because gsk_path_print()
* prints numbers with insane accuracy
*/
/* g_assert_cmpstr (tests[i].out, ==, string); */
path = gsk_path_parse (tests[i].out);
g_assert_nonnull (path);
string2 = gsk_path_to_string (path);
gsk_path_unref (path);
g_assert_cmpstr (string, ==, string2);
g_free (string2);
}
path = gsk_path_parse (string);
g_assert_nonnull (path);
string2 = gsk_path_to_string (path);
gsk_path_unref (path);
g_assert_cmpstr (string, ==, string2);
g_free (string);
g_free (string2);
}
else
g_assert_null (path);
}
}
static void
test_empty_path (void)
{
GskPathBuilder *builder;
GskPath *path;
char *s;
graphene_rect_t bounds;
GskPathPoint point;
builder = gsk_path_builder_new ();
path = gsk_path_builder_free_to_path (builder);
g_assert_true (gsk_path_is_empty (path));
g_assert_false (gsk_path_is_closed (path));
s = gsk_path_to_string (path);
g_assert_cmpstr (s, ==, "");
g_free (s);
g_assert_false (gsk_path_get_bounds (path, &bounds));
g_assert_true (graphene_rect_equal (&bounds, graphene_rect_zero ()));
g_assert_false (gsk_path_in_fill (path, &GRAPHENE_POINT_INIT (0, 0), GSK_FILL_RULE_WINDING));
g_assert_false (gsk_path_get_closest_point (path, &GRAPHENE_POINT_INIT (0, 0), INFINITY, &point));
gsk_path_unref (path);
}
static void
test_rect_path (void)
{
GskPathBuilder *builder;
GskPath *path;
char *s;
graphene_rect_t bounds;
GskPathPoint point;
builder = gsk_path_builder_new ();
gsk_path_builder_add_rect (builder, &GRAPHENE_RECT_INIT (0, 0, 200, 100));
path = gsk_path_builder_free_to_path (builder);
g_assert_false (gsk_path_is_empty (path));
g_assert_true (gsk_path_is_closed (path));
s = gsk_path_to_string (path);
g_assert_cmpstr (s, ==, "M 0 0 L 200 0 L 200 100 L 0 100 Z");
g_free (s);
g_assert_true (gsk_path_get_bounds (path, &bounds));
g_assert_true (graphene_rect_equal (&bounds, &GRAPHENE_RECT_INIT (0, 0, 200, 100)));
g_assert_true (gsk_path_in_fill (path, &GRAPHENE_POINT_INIT (50, 50), GSK_FILL_RULE_WINDING));
g_assert_false (gsk_path_in_fill (path, &GRAPHENE_POINT_INIT (200, 200), GSK_FILL_RULE_WINDING));
g_assert_true (gsk_path_get_closest_point (path, &GRAPHENE_POINT_INIT (200, 200), INFINITY, &point));
gsk_path_unref (path);
}
/* test quad <> cubic conversions */
static gboolean
collect_path (GskPathOperation op,
const graphene_point_t *pts,
gsize n_pts,
gpointer user_data)
{
GskPathBuilder *builder = user_data;
if (op == GSK_PATH_MOVE)
return TRUE;
switch (op)
{
case GSK_PATH_MOVE:
break;
case GSK_PATH_CLOSE:
gsk_path_builder_close (builder);
break;
case GSK_PATH_LINE:
gsk_path_builder_line_to (builder, pts[1].x, pts[1].y);
break;
case GSK_PATH_QUAD:
gsk_path_builder_quad_to (builder, pts[1].x, pts[1].y,
pts[2].x, pts[2].y);
break;
case GSK_PATH_CUBIC:
gsk_path_builder_cubic_to (builder, pts[1].x, pts[1].y,
pts[2].x, pts[2].y,
pts[3].x, pts[3].y);
break;
default:
g_assert_not_reached ();
}
return TRUE;
}
static void
test_foreach (void)
{
const char *s = "M 0 0 Q 9 0, 9 9 Q 99 9, 99 18 Z";
const char *sp = "M 0 0 C 6 0, 9 3, 9 9 C 69 9, 99 12, 99 18 Z";
GskPath *path, *path2;
char *s2;
GskPathBuilder *builder;
path = gsk_path_parse (s);
builder = gsk_path_builder_new ();
gsk_path_foreach (path, GSK_PATH_FOREACH_ALLOW_QUAD, collect_path, builder);
path2 = gsk_path_builder_free_to_path (builder);
s2 = gsk_path_to_string (path2);
g_assert_cmpstr (s, ==, s2);
gsk_path_unref (path2);
g_free (s2);
builder = gsk_path_builder_new ();
gsk_path_foreach (path, GSK_PATH_FOREACH_ALLOW_QUAD|GSK_PATH_FOREACH_ALLOW_CUBIC, collect_path, builder);
path2 = gsk_path_builder_free_to_path (builder);
s2 = gsk_path_to_string (path2);
g_assert_cmpstr (s, ==, s2);
gsk_path_unref (path2);
g_free (s2);
builder = gsk_path_builder_new ();
gsk_path_foreach (path, GSK_PATH_FOREACH_ALLOW_CUBIC, collect_path, builder);
path2 = gsk_path_builder_free_to_path (builder);
s2 = gsk_path_to_string (path2);
g_assert_cmpstr (sp, ==, s2);
gsk_path_unref (path2);
g_free (s2);
}
int
main (int argc, char *argv[])
{
gtk_test_init (&argc, &argv, NULL);
g_test_add_func ("/path/rsvg-parse", test_rsvg_parse);
g_test_add_func ("/path/empty", test_empty_path);
g_test_add_func ("/path/rect", test_rect_path);
g_test_add_func ("/path/foreach", test_foreach);
return g_test_run ();
}

595
testsuite/gsk/path.c Normal file
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@ -0,0 +1,595 @@
/*
* Copyright © 2020 Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include <gtk/gtk.h>
static GskPath *
create_random_degenerate_path (guint max_contours)
{
#define N_DEGENERATE_PATHS 14
GskPathBuilder *builder;
guint i;
builder = gsk_path_builder_new ();
switch (g_test_rand_int_range (0, N_DEGENERATE_PATHS))
{
case 0:
/* empty path */
break;
case 1:
/* a single point */
gsk_path_builder_move_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
break;
case 2:
/* N points */
for (i = 0; i < MIN (10, max_contours); i++)
{
gsk_path_builder_move_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
}
break;
case 3:
/* 1 closed point */
gsk_path_builder_move_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
gsk_path_builder_close (builder);
break;
case 4:
/* the same point closed N times */
gsk_path_builder_move_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
for (i = 0; i < MIN (10, max_contours); i++)
{
gsk_path_builder_close (builder);
}
break;
case 5:
/* a zero-width and zero-height rect */
gsk_path_builder_add_rect (builder,
&GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
0, 0));
break;
case 6:
/* a zero-width rect */
gsk_path_builder_add_rect (builder,
&GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
0,
g_test_rand_double_range (-1000, 1000)));
break;
case 7:
/* a zero-height rect */
gsk_path_builder_add_rect (builder,
&GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
0));
break;
case 8:
/* a negative-size rect */
gsk_path_builder_add_rect (builder,
&GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 0),
g_test_rand_double_range (-1000, 0)));
break;
case 9:
/* an absolutely random rect */
gsk_path_builder_add_rect (builder,
&GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000)));
break;
case 10:
/* an absolutely random rect */
gsk_path_builder_add_rect (builder,
&GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000)));
break;
case 11:
/* an absolutely random circle */
gsk_path_builder_add_circle (builder,
&GRAPHENE_POINT_INIT (g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000)),
g_test_rand_double_range (1, 1000));
break;
case 12:
/* a zero-length line */
{
graphene_point_t point = GRAPHENE_POINT_INIT (g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
gsk_path_builder_move_to (builder, point.x, point.y);
gsk_path_builder_line_to (builder, point.x, point.y);
}
break;
case 13:
/* a cubic with start == end */
{
graphene_point_t point = GRAPHENE_POINT_INIT (g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
gsk_path_builder_move_to (builder, point.x, point.y);
gsk_path_builder_cubic_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
point.x, point.y);
}
break;
case N_DEGENERATE_PATHS:
default:
g_assert_not_reached ();
}
return gsk_path_builder_free_to_path (builder);
}
static GskPath *
create_random_path (guint max_contours);
static void
add_shape_contour (GskPathBuilder *builder)
{
#define N_SHAPE_CONTOURS 3
switch (g_test_rand_int_range (0, N_SHAPE_CONTOURS))
{
case 0:
gsk_path_builder_add_rect (builder,
&GRAPHENE_RECT_INIT (g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (1, 1000),
g_test_rand_double_range (1, 1000)));
break;
case 1:
gsk_path_builder_add_circle (builder,
&GRAPHENE_POINT_INIT (g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000)),
g_test_rand_double_range (1, 1000));
break;
case 2:
{
GskPath *path = create_random_path (1);
gsk_path_builder_add_path (builder, path);
gsk_path_unref (path);
}
break;
case N_SHAPE_CONTOURS:
default:
g_assert_not_reached ();
break;
}
}
static void
add_standard_contour (GskPathBuilder *builder)
{
guint i, n;
if (g_test_rand_bit ())
{
if (g_test_rand_bit ())
gsk_path_builder_move_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
else
gsk_path_builder_rel_move_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
}
/* that 20 is random, but should be enough to get some
* crazy self-intersecting shapes */
n = g_test_rand_int_range (1, 20);
for (i = 0; i < n; i++)
{
switch (g_test_rand_int_range (0, 6))
{
case 0:
gsk_path_builder_line_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
break;
case 1:
gsk_path_builder_rel_line_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
break;
case 2:
gsk_path_builder_quad_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
break;
case 3:
gsk_path_builder_rel_quad_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
break;
case 4:
gsk_path_builder_cubic_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
break;
case 5:
gsk_path_builder_rel_cubic_to (builder,
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000),
g_test_rand_double_range (-1000, 1000));
break;
default:
g_assert_not_reached();
break;
}
}
if (g_test_rand_bit ())
gsk_path_builder_close (builder);
}
static GskPath *
create_random_path (guint max_contours)
{
GskPathBuilder *builder;
guint i, n;
/* 5% chance for a weird shape */
if (!g_test_rand_int_range (0, 20))
return create_random_degenerate_path (max_contours);
builder = gsk_path_builder_new ();
n = g_test_rand_int_range (1, 10);
n = MIN (n, max_contours);
for (i = 0; i < n; i++)
{
/* 2/3 of shapes are standard contours */
if (g_test_rand_int_range (0, 3))
add_standard_contour (builder);
else
add_shape_contour (builder);
}
return gsk_path_builder_free_to_path (builder);
}
typedef struct {
GskPathOperation op;
graphene_point_t pts[4];
} PathOperation;
static void
_g_string_append_double (GString *string,
double d)
{
char buf[G_ASCII_DTOSTR_BUF_SIZE];
g_ascii_dtostr (buf, G_ASCII_DTOSTR_BUF_SIZE, d);
g_string_append (string, buf);
}
static void
_g_string_append_point (GString *string,
const graphene_point_t *pt)
{
_g_string_append_double (string, pt->x);
g_string_append_c (string, ' ');
_g_string_append_double (string, pt->y);
}
static void
path_operation_print (const PathOperation *p,
GString *string)
{
switch (p->op)
{
case GSK_PATH_MOVE:
g_string_append (string, "M ");
_g_string_append_point (string, &p->pts[0]);
break;
case GSK_PATH_CLOSE:
g_string_append (string, " Z");
break;
case GSK_PATH_LINE:
g_string_append (string, " L ");
_g_string_append_point (string, &p->pts[1]);
break;
case GSK_PATH_QUAD:
g_string_append (string, " Q ");
_g_string_append_point (string, &p->pts[1]);
g_string_append (string, ", ");
_g_string_append_point (string, &p->pts[2]);
break;
case GSK_PATH_CUBIC:
g_string_append (string, " C ");
_g_string_append_point (string, &p->pts[1]);
g_string_append (string, ", ");
_g_string_append_point (string, &p->pts[2]);
g_string_append (string, ", ");
_g_string_append_point (string, &p->pts[3]);
break;
default:
g_assert_not_reached();
return;
}
}
static gboolean
path_operation_equal (const PathOperation *p1,
const PathOperation *p2,
float epsilon)
{
if (p1->op != p2->op)
return FALSE;
/* No need to compare pts[0] for most ops, that's just
* duplicate work. */
switch (p1->op)
{
case GSK_PATH_MOVE:
return graphene_point_near (&p1->pts[0], &p2->pts[0], epsilon);
case GSK_PATH_LINE:
case GSK_PATH_CLOSE:
return graphene_point_near (&p1->pts[1], &p2->pts[1], epsilon);
case GSK_PATH_QUAD:
return graphene_point_near (&p1->pts[1], &p2->pts[1], epsilon)
&& graphene_point_near (&p1->pts[2], &p2->pts[2], epsilon);
case GSK_PATH_CUBIC:
return graphene_point_near (&p1->pts[1], &p2->pts[1], epsilon)
&& graphene_point_near (&p1->pts[2], &p2->pts[2], epsilon)
&& graphene_point_near (&p1->pts[3], &p2->pts[3], epsilon);
default:
g_return_val_if_reached (FALSE);
}
}
static gboolean
collect_path_operation_cb (GskPathOperation op,
const graphene_point_t *pts,
gsize n_pts,
gpointer user_data)
{
g_array_append_vals (user_data,
(PathOperation[1]) { {
op,
{
GRAPHENE_POINT_INIT(pts[0].x, pts[0].y),
GRAPHENE_POINT_INIT(n_pts > 1 ? pts[1].x : 0,
n_pts > 1 ? pts[1].y : 0),
GRAPHENE_POINT_INIT(n_pts > 2 ? pts[2].x : 0,
n_pts > 2 ? pts[2].y : 0),
GRAPHENE_POINT_INIT(n_pts > 3 ? pts[3].x : 0,
n_pts > 3 ? pts[3].y : 0)
},
} },
1);
return TRUE;
}
static GArray *
collect_path (GskPath *path)
{
GArray *array = g_array_new (FALSE, FALSE, sizeof (PathOperation));
/* Use -1 here because we want all the flags, even future additions */
gsk_path_foreach (path, -1, collect_path_operation_cb, array);
return array;
}
static void
assert_path_equal_func (const char *domain,
const char *file,
int line,
const char *func,
GskPath *path1,
GskPath *path2,
float epsilon)
{
GArray *ops1, *ops2;
guint i;
ops1 = collect_path (path1);
ops2 = collect_path (path2);
for (i = 0; i < MAX (ops1->len, ops2->len); i++)
{
PathOperation *op1 = i < ops1->len ? &g_array_index (ops1, PathOperation, i) : NULL;
PathOperation *op2 = i < ops2->len ? &g_array_index (ops2, PathOperation, i) : NULL;
if (op1 == NULL || op2 == NULL || !path_operation_equal (op1, op2, epsilon))
{
GString *string;
guint j;
/* Find the operation we start to print */
for (j = i; j-- > 0; )
{
PathOperation *op = &g_array_index (ops1, PathOperation, j);
if (op->op == GSK_PATH_MOVE)
break;
if (j + 3 == i)
{
j = i - 1;
break;
}
}
string = g_string_new (j == 0 ? "" : "... ");
for (; j < i; j++)
{
PathOperation *op = &g_array_index (ops1, PathOperation, j);
path_operation_print (op, string);
g_string_append_c (string, ' ');
}
g_string_append (string, "\\\n ");
if (op1)
{
path_operation_print (op1, string);
if (ops1->len > i + 1)
g_string_append (string, " ...");
}
g_string_append (string, "\n ");
if (op1)
{
path_operation_print (op2, string);
if (ops2->len > i + 1)
g_string_append (string, " ...");
}
g_assertion_message (domain, file, line, func, string->str);
g_string_free (string, TRUE);
}
}
g_array_free (ops1, TRUE);
g_array_free (ops2, TRUE);
}
#define assert_path_equal(p1,p2) assert_path_equal_func(G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, (p1),(p2), FLOAT_EPSILON)
#define assert_path_equal_with_epsilon(p1,p2, epsilon) \
assert_path_equal_func(G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, (p1),(p2), (epsilon))
static void
test_create (void)
{
GskPath *path1, *path2, *built;
GskPathBuilder *builder;
guint i;
char *s;
GString *str;
for (i = 0; i < 1000; i++)
{
builder = gsk_path_builder_new ();
path1 = create_random_path (G_MAXUINT);
gsk_path_builder_add_path (builder, path1);
path2 = create_random_path (G_MAXUINT);
gsk_path_builder_add_path (builder, path2);
built = gsk_path_builder_free_to_path (builder);
str = g_string_new (NULL);
gsk_path_print (path1, str);
if (!gsk_path_is_empty (path1) && !gsk_path_is_empty (path2))
g_string_append_c (str, ' ');
gsk_path_print (path2, str);
s = gsk_path_to_string (built);
g_assert_cmpstr (s, ==, str->str);
g_string_free (str, TRUE);
g_free (s);
gsk_path_unref (built);
gsk_path_unref (path2);
gsk_path_unref (path1);
}
}
static void
test_parse (void)
{
int i;
for (i = 0; i < 1000; i++)
{
GskPath *path1, *path2;
char *string1, *string2;
path1 = create_random_path (G_MAXUINT);
string1 = gsk_path_to_string (path1);
g_assert_nonnull (string1);
path2 = gsk_path_parse (string1);
g_assert_nonnull (path2);
string2 = gsk_path_to_string (path2);
g_assert_nonnull (string2);
assert_path_equal_with_epsilon (path1, path2, 1.f / 1024);
gsk_path_unref (path2);
gsk_path_unref (path1);
g_free (string2);
g_free (string1);
}
}
int
main (int argc,
char *argv[])
{
gtk_test_init (&argc, &argv, NULL);
g_test_add_func ("/path/create", test_create);
g_test_add_func ("/path/parse", test_parse);
return g_test_run ();
}