1 /*
2 * Copyright © 2018 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
26 #include "hb-test.h"
27
28 #include <hb-ot.h>
29
30 static void
31 test_ot_layout_get_ligature_carets_ot_gdef (void)
32 {
33 hb_face_t *face = hb_test_open_font_file ("fonts/NotoNastaliqUrdu-Regular.ttf");
34 hb_font_t *font = hb_font_create (face);
35 hb_font_set_scale (font, hb_face_get_upem (face) * 2, hb_face_get_upem (face) * 4);
36
37 hb_position_t caret_array[16];
38
39 /* call with no result */
40 {
41 unsigned caret_count = 16;
42 g_assert_cmpuint (0, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
43 188, 0, &caret_count,
44 caret_array));
45
46 g_assert_cmpuint (0, ==, caret_count);
47 }
48
49 /* call with no result and some offset */
50 {
51 unsigned caret_count = 16;
52 g_assert_cmpuint (0, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
53 188, 10, &caret_count,
54 caret_array));
55
56 g_assert_cmpuint (0, ==, caret_count);
57 }
58
59 /* a glyph with 3 ligature carets */
60 {
61 unsigned caret_count = 16;
62 g_assert_cmpuint (3, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
63 1020, 0, &caret_count,
64 caret_array));
65
66 g_assert_cmpuint (3, ==, caret_count);
67 g_assert_cmpuint (2718, ==, caret_array[0]);
68 g_assert_cmpuint (5438, ==, caret_array[1]);
69 g_assert_cmpuint (8156, ==, caret_array[2]);
70 }
71
72 /* the same glyph as above but with offset */
73 {
74 caret_array[2] = 123;
75
76 unsigned caret_count = 16;
77 g_assert_cmpuint (3, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
78 1020, 1, &caret_count,
79 caret_array));
80
81 g_assert_cmpuint (2, ==, caret_count);
82 g_assert_cmpuint (5438, ==, caret_array[0]);
83 g_assert_cmpuint (8156, ==, caret_array[1]);
84
85 g_assert_cmpuint (123, ==, caret_array[2]);
86 }
87
88 /* the same glyph as above but with another offset */
89 {
90 unsigned caret_count = 16;
91 g_assert_cmpuint (3, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
92 1020, 2, &caret_count,
93 caret_array));
94
95 g_assert_cmpuint (1, ==, caret_count);
96 g_assert_cmpuint (8156, ==, caret_array[0]);
97 }
98
99 /* call with no result */
100 {
101 unsigned caret_count = 16;
102 g_assert_cmpuint (0, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
103 1021, 0, &caret_count,
104 caret_array));
105
106 g_assert_cmpuint (0, ==, caret_count);
107 }
108
109 /* a glyph with 1 ligature caret */
110 {
111 unsigned caret_count = 16;
112 g_assert_cmpuint (1, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
113 1022, 0, &caret_count,
114 caret_array));
115
116 g_assert_cmpuint (1, ==, caret_count);
117 g_assert_cmpuint (3530, ==, caret_array[0]);
118 }
119
120 /* the same glyph as above but with offset */
121 {
122 unsigned caret_count = 16;
123 g_assert_cmpuint (1, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
124 1022, 1, &caret_count,
125 caret_array));
126
127 g_assert_cmpuint (0, ==, caret_count);
128 }
129
130 /* a glyph with 2 ligature carets */
131 {
132 unsigned caret_count = 16;
133 g_assert_cmpuint (2, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
134 1023, 0, &caret_count,
135 caret_array));
136
137 g_assert_cmpuint (2, ==, caret_count);
138 g_assert_cmpuint (2352, ==, caret_array[0]);
139 g_assert_cmpuint (4706, ==, caret_array[1]);
140 }
141
142 hb_font_destroy (font);
143 hb_face_destroy (face);
144 }
145
146 static void
147 test_ot_layout_get_ligature_carets_empty (void)
148 {
149 hb_face_t *face = hb_face_get_empty ();
150 hb_font_t *font = hb_font_create (face);
151 hb_font_set_scale (font, hb_face_get_upem (face) * 2, hb_face_get_upem (face) * 4);
152
153 hb_position_t caret_array[3];
154 unsigned int caret_count = 3;
155 g_assert_cmpuint (0, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_RTL,
156 1024, 0, &caret_count,
157 caret_array));
158
159 g_assert_cmpuint (0, ==, caret_count);
160
161 hb_font_destroy (font);
162 hb_face_destroy (face);
163 }
164
165 int
166 main (int argc, char **argv)
167 {
168 g_test_init (&argc, &argv, NULL);
169
170 hb_test_add (test_ot_layout_get_ligature_carets_ot_gdef);
171 hb_test_add (test_ot_layout_get_ligature_carets_empty);
172
173 return hb_test_run ();
174 }