1 /*
2 * Copyright © 2019 Ebrahim Byagowi
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 */
24
25 #include "hb-test.h"
26
27 #include <hb-ot.h>
28
29 /* Unit tests for hb_font_[gs]et_var_coords_ */
30
31 static void
test_get_var_coords(void)32 test_get_var_coords (void)
33 {
34 #ifdef HB_EXPERIMENTAL_API
35 #ifndef G_APPROX_VALUE
36 #define G_APPROX_VALUE(a, b, epsilon) \
37 (((a) > (b) ? (a) - (b) : (b) - (a)) < (epsilon))
38 #endif
39
40 #define EPSILON 0.05f
41
42 hb_face_t *face = hb_test_open_font_file ("fonts/TestCFF2VF.otf");
43 hb_font_t *font = hb_font_create (face);
44
45 /* Normalized coords as input */
46 int normalized_coords[] = {100, 0};
47 hb_font_set_var_coords_normalized (font, normalized_coords, 2);
48 g_assert_cmpint ((int) hb_font_get_var_coords_design (font, NULL)[0], ==, 403);
49 g_assert_cmpint ((int) hb_font_get_var_coords_normalized (font, NULL)[0], ==, 100);
50
51 /* Design coords as input */
52 float design_coords[] = {206.f, 0};
53 hb_font_set_var_coords_design (font, design_coords, 2);
54 g_assert_cmpint ((int) hb_font_get_var_coords_normalized (font, NULL)[0], ==, -16117);
55 g_assert_cmpint ((int) hb_font_get_var_coords_design (font, NULL)[0], ==, 206);
56
57 for (float weight = 200; weight < 901; ++weight)
58 {
59 int normalized;
60 hb_ot_var_normalize_coords (face, 1, &weight, &normalized);
61 hb_font_set_var_coords_normalized (font, &normalized, 1);
62 float converted_back = hb_font_get_var_coords_design (font, NULL)[0];
63 // fprintf (stderr, "%f: %d => %f\n", weight, normalized, converted_back);
64 g_assert_true (G_APPROX_VALUE (converted_back, weight, EPSILON));
65 }
66
67 hb_font_destroy (font);
68 hb_face_destroy (face);
69 #endif
70 }
71
72 static void
test_get_var_get_axis_infos(void)73 test_get_var_get_axis_infos (void)
74 {
75 hb_face_t *face = hb_test_open_font_file ("fonts/Estedad-VF.ttf");
76
77 g_assert_cmpint (hb_ot_var_get_axis_count (face), ==, 2);
78
79 hb_ot_var_axis_info_t info;
80 unsigned c = 1;
81
82 g_assert_cmpint (hb_ot_var_get_axis_infos (face, 0, &c, &info), ==, 2);
83 g_assert (info.tag == HB_TAG ('w','g','h','t'));
84 g_assert_cmpint (c, ==, 1);
85
86 hb_ot_var_get_axis_infos (face, 1, &c, &info);
87 g_assert (info.tag == HB_TAG ('w','d','t','h'));
88 g_assert_cmpint (c, ==, 1);
89
90 hb_ot_var_get_axis_infos (face, 2, &c, &info);
91 g_assert_cmpint (c, ==, 0);
92
93 hb_face_destroy (face);
94 }
95
96 int
main(int argc,char ** argv)97 main (int argc, char **argv)
98 {
99 hb_test_init (&argc, &argv);
100 hb_test_add (test_get_var_coords);
101 hb_test_add (test_get_var_get_axis_infos);
102 return hb_test_run ();
103 }
104