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/* Copyright (C) 2023 Red Hat, Inc.
*
* 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 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/>.
*/
#include <gtk/gtk.h>
#include <gtk/gtkcolorutils.h>
struct {
float r, g, b;
float h, s, v;
} tests[] = {
{ 0, 0, 0, 0, 0, 0 },
{ 1, 1, 1, 0, 0, 1 },
{ 1, 0, 0, 0, 1, 1 },
{ 1, 1, 0, 1.0 / 6.0, 1, 1 },
{ 0, 1, 0, 2.0 / 6.0, 1, 1 },
{ 0, 1, 1, 3.0 / 6.0, 1, 1 },
{ 0, 0, 1, 4.0 / 6.0, 1, 1 },
{ 1, 0, 1, 5.0 / 6.0, 1, 1 },
};
static void
test_roundtrips (void)
{
for (unsigned int i = 0; i < G_N_ELEMENTS (tests); i++)
{
float r, g, b;
float h, s, v;
g_print ("color %u\n", i);
gtk_hsv_to_rgb (tests[i].h, tests[i].s, tests[i].v, &r, &g, &b);
g_assert_cmpfloat_with_epsilon (r, tests[i].r, FLT_EPSILON);
g_assert_cmpfloat_with_epsilon (g, tests[i].g, FLT_EPSILON);
g_assert_cmpfloat_with_epsilon (b, tests[i].b, FLT_EPSILON);
gtk_rgb_to_hsv (tests[i].r, tests[i].g, tests[i].b, &h, &s, &v);
g_assert_cmpfloat_with_epsilon (h, tests[i].h, FLT_EPSILON);
g_assert_cmpfloat_with_epsilon (s, tests[i].s, FLT_EPSILON);
g_assert_cmpfloat_with_epsilon (v, tests[i].v, FLT_EPSILON);
}
}
int
main (int argc,
char *argv[])
{
gtk_test_init (&argc, &argv);
g_test_add_func ("/color/roundtrips", test_roundtrips);
return g_test_run();
}
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