1 /* 2 * Copyright 2011 Google, Inc. 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 * Google Author(s): Behdad Esfahbod 25 */ 26 27 #include "hb-test.h" 28 29 /* Unit tests for hb-shape.h */ 30 31 /* 32 * This test provides a framework to test aspects of hb_shape() that are 33 * font-independent. Please add tests for any feature that fits that 34 * description. 35 */ 36 37 /* TODO Make this test data-driven and add some real test data */ 38 /* TODO Test positions too. And test non-native direction. Test commit 2e18c6dbdfb */ 39 40 41 static const char test_data[] = "test\0data"; 42 43 static hb_position_t 44 glyph_h_advance_func (hb_font_t *font, void *font_data, 45 hb_codepoint_t glyph, 46 void *user_data) 47 { 48 switch (glyph) { 49 case 1: return 10; 50 case 2: return 6; 51 case 3: return 5; 52 } 53 return 0; 54 } 55 56 static hb_bool_t 57 glyph_func (hb_font_t *font, void *font_data, 58 hb_codepoint_t unicode, hb_codepoint_t variant_selector, 59 hb_codepoint_t *glyph, 60 void *user_data) 61 { 62 switch (unicode) { 63 case 'T': *glyph = 1; return TRUE; 64 case 'e': *glyph = 2; return TRUE; 65 case 's': *glyph = 3; return TRUE; 66 } 67 return FALSE; 68 } 69 70 static hb_position_t 71 glyph_h_kerning_func (hb_font_t *font, void *font_data, 72 hb_codepoint_t left, hb_codepoint_t right, 73 void *user_data) 74 { 75 if (left == 1 && right == 2) 76 return -2; 77 78 return 0; 79 } 80 81 static const char TesT[] = "TesT"; 82 83 static void 84 test_shape (void) 85 { 86 hb_blob_t *blob; 87 hb_face_t *face; 88 hb_font_funcs_t *ffuncs; 89 hb_font_t *font; 90 hb_buffer_t *buffer; 91 unsigned int len; 92 hb_glyph_info_t *glyphs; 93 hb_glyph_position_t *positions; 94 95 blob = hb_blob_create (test_data, sizeof (test_data), HB_MEMORY_MODE_READONLY, NULL, NULL); 96 face = hb_face_create (blob, 0); 97 hb_blob_destroy (blob); 98 font = hb_font_create (face); 99 hb_face_destroy (face); 100 hb_font_set_scale (font, 10, 10); 101 102 ffuncs = hb_font_funcs_create (); 103 hb_font_funcs_set_glyph_h_advance_func (ffuncs, glyph_h_advance_func, NULL, NULL); 104 hb_font_funcs_set_glyph_func (ffuncs, glyph_func, malloc (10), free); 105 hb_font_funcs_set_glyph_h_kerning_func (ffuncs, glyph_h_kerning_func, NULL, NULL); 106 hb_font_set_funcs (font, ffuncs, NULL, NULL); 107 hb_font_funcs_destroy (ffuncs); 108 109 buffer = hb_buffer_create (); 110 hb_buffer_set_direction (buffer, HB_DIRECTION_LTR); 111 hb_buffer_add_utf8 (buffer, TesT, 4, 0, 4); 112 113 hb_shape (font, buffer, NULL, 0); 114 115 len = hb_buffer_get_length (buffer); 116 glyphs = hb_buffer_get_glyph_infos (buffer, NULL); 117 positions = hb_buffer_get_glyph_positions (buffer, NULL); 118 119 { 120 const hb_codepoint_t output_glyphs[] = {1, 2, 3, 1}; 121 const hb_position_t output_x_advances[] = {9, 5, 5, 10}; 122 const hb_position_t output_x_offsets[] = {0, -1, 0, 0}; 123 unsigned int i; 124 g_assert_cmpint (len, ==, 4); 125 for (i = 0; i < len; i++) { 126 g_assert_cmphex (glyphs[i].codepoint, ==, output_glyphs[i]); 127 g_assert_cmphex (glyphs[i].cluster, ==, i); 128 } 129 for (i = 0; i < len; i++) { 130 g_assert_cmpint (output_x_advances[i], ==, positions[i].x_advance); 131 g_assert_cmpint (output_x_offsets [i], ==, positions[i].x_offset); 132 g_assert_cmpint (0, ==, positions[i].y_advance); 133 g_assert_cmpint (0, ==, positions[i].y_offset); 134 } 135 } 136 137 hb_buffer_destroy (buffer); 138 hb_font_destroy (font); 139 } 140 141 static void 142 test_shape_clusters (void) 143 { 144 hb_face_t *face; 145 hb_font_t *font; 146 hb_buffer_t *buffer; 147 unsigned int len; 148 hb_glyph_info_t *glyphs; 149 150 face = hb_face_create (NULL, 0); 151 font = hb_font_create (face); 152 hb_face_destroy (face); 153 154 buffer = hb_buffer_create (); 155 hb_buffer_set_direction (buffer, HB_DIRECTION_LTR); 156 { 157 /* https://code.google.com/p/chromium/issues/detail?id=497578 */ 158 hb_codepoint_t test[] = {0xFFF1, 0xF0B6}; 159 hb_buffer_add_utf32 (buffer, test, 2, 0, 2); 160 } 161 162 hb_shape (font, buffer, NULL, 0); 163 164 len = hb_buffer_get_length (buffer); 165 glyphs = hb_buffer_get_glyph_infos (buffer, NULL); 166 167 { 168 const hb_codepoint_t output_glyphs[] = {0}; 169 const hb_position_t output_clusters[] = {0}; 170 unsigned int i; 171 g_assert_cmpint (len, ==, 1); 172 for (i = 0; i < len; i++) { 173 g_assert_cmphex (glyphs[i].codepoint, ==, output_glyphs[i]); 174 g_assert_cmphex (glyphs[i].cluster, ==, output_clusters[i]); 175 } 176 } 177 178 hb_buffer_destroy (buffer); 179 hb_font_destroy (font); 180 } 181 182 183 static void 184 test_shape_list (void) 185 { 186 const char **shapers = hb_shape_list_shapers (); 187 188 unsigned int i; 189 for (i = 0; shapers[i]; i++) 190 ; 191 192 g_assert_cmpint (i, >, 1); 193 g_assert (!strcmp (shapers[i - 1], "fallback")); 194 } 195 196 int 197 main (int argc, char **argv) 198 { 199 hb_test_init (&argc, &argv); 200 201 hb_test_add (test_shape); 202 hb_test_add (test_shape_clusters); 203 /* TODO test fallback shaper */ 204 /* TODO test shaper_full */ 205 hb_test_add (test_shape_list); 206 207 return hb_test_run(); 208 } 209
