test-font.c revision 4d6dafd47f4271549e528d2e8047d50562aef399
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-font.h */ 30 31 32static const char test_data[] = "test\0data"; 33 34 35static void 36test_face_empty (void) 37{ 38 g_assert (hb_face_get_empty ()); 39 g_assert (hb_face_get_empty () == hb_face_create (hb_blob_get_empty (), 0)); 40 g_assert (hb_face_get_empty () == hb_face_create (NULL, 0)); 41 42 g_assert (hb_face_reference_table (hb_face_get_empty (), HB_TAG ('h','e','a','d')) == hb_blob_get_empty ()); 43 44 g_assert_cmpint (hb_face_get_upem (hb_face_get_empty ()), ==, 1000); 45} 46 47static void 48test_face_create (void) 49{ 50 hb_face_t *face; 51 hb_blob_t *blob; 52 53 blob = hb_blob_create (test_data, sizeof (test_data), HB_MEMORY_MODE_READONLY, NULL, NULL); 54 face = hb_face_create (blob, 0); 55 hb_blob_destroy (blob); 56 57 g_assert (hb_face_reference_table (face, HB_TAG ('h','e','a','d')) == hb_blob_get_empty ()); 58 59 g_assert_cmpint (hb_face_get_upem (face), ==, 1000); 60 61 hb_face_destroy (face); 62} 63 64 65static void 66free_up (void *user_data) 67{ 68 int *freed = (int *) user_data; 69 70 g_assert (!*freed); 71 72 (*freed)++; 73} 74 75static hb_blob_t * 76get_table (hb_face_t *face, hb_tag_t tag, void *user_data) 77{ 78 if (tag == HB_TAG ('a','b','c','d')) 79 return hb_blob_create (test_data, sizeof (test_data), HB_MEMORY_MODE_READONLY, NULL, NULL); 80 81 return hb_blob_get_empty (); 82} 83 84static void 85test_face_createfortables (void) 86{ 87 hb_face_t *face; 88 hb_blob_t *blob; 89 const char *data; 90 unsigned int len; 91 int freed = 0; 92 93 face = hb_face_create_for_tables (get_table, &freed, free_up); 94 g_assert (!freed); 95 96 g_assert (hb_face_reference_table (face, HB_TAG ('h','e','a','d')) == hb_blob_get_empty ()); 97 98 blob = hb_face_reference_table (face, HB_TAG ('a','b','c','d')); 99 g_assert (blob != hb_blob_get_empty ()); 100 101 data = hb_blob_get_data (blob, &len); 102 g_assert_cmpint (len, ==, sizeof (test_data)); 103 g_assert (0 == memcmp (data, test_data, sizeof (test_data))); 104 hb_blob_destroy (blob); 105 106 g_assert_cmpint (hb_face_get_upem (face), ==, 1000); 107 108 hb_face_destroy (face); 109 g_assert (freed); 110} 111 112static void 113_test_font_nil_funcs (hb_font_t *font) 114{ 115 hb_codepoint_t glyph; 116 hb_position_t x, y; 117 hb_glyph_extents_t extents; 118 119 x = y = 13; 120 g_assert (!hb_font_get_glyph_contour_point (font, 17, 2, &x, &y)); 121 g_assert_cmpint (x, ==, 0); 122 g_assert_cmpint (y, ==, 0); 123 124 x = hb_font_get_glyph_h_advance (font, 17); 125 g_assert_cmpint (x, ==, 0); 126 127 extents.x_bearing = extents.y_bearing = 13; 128 extents.width = extents.height = 15; 129 hb_font_get_glyph_extents (font, 17, &extents); 130 g_assert_cmpint (extents.x_bearing, ==, 0); 131 g_assert_cmpint (extents.y_bearing, ==, 0); 132 g_assert_cmpint (extents.width, ==, 0); 133 g_assert_cmpint (extents.height, ==, 0); 134 135 glyph = 3; 136 g_assert (!hb_font_get_glyph (font, 17, 2, &glyph)); 137 g_assert_cmpint (glyph, ==, 0); 138 139 x = 13; 140 x = hb_font_get_glyph_h_kerning (font, 17, 19); 141 g_assert_cmpint (x, ==, 0); 142} 143 144static void 145_test_fontfuncs_nil (hb_font_funcs_t *ffuncs) 146{ 147 hb_blob_t *blob; 148 hb_face_t *face; 149 hb_font_t *font; 150 hb_font_t *subfont; 151 int freed = 0; 152 153 blob = hb_blob_create (test_data, sizeof (test_data), HB_MEMORY_MODE_READONLY, NULL, NULL); 154 face = hb_face_create (blob, 0); 155 hb_blob_destroy (blob); 156 g_assert (!hb_face_is_immutable (face)); 157 font = hb_font_create (face); 158 g_assert (font); 159 g_assert (hb_face_is_immutable (face)); 160 hb_face_destroy (face); 161 162 163 hb_font_set_funcs (font, ffuncs, &freed, free_up); 164 g_assert_cmpint (freed, ==, 0); 165 166 _test_font_nil_funcs (font); 167 168 subfont = hb_font_create_sub_font (font); 169 g_assert (subfont); 170 171 g_assert_cmpint (freed, ==, 0); 172 hb_font_destroy (font); 173 g_assert_cmpint (freed, ==, 0); 174 175 _test_font_nil_funcs (subfont); 176 177 hb_font_destroy (subfont); 178 g_assert_cmpint (freed, ==, 1); 179} 180 181static void 182test_fontfuncs_empty (void) 183{ 184 g_assert (hb_font_funcs_get_empty ()); 185 g_assert (hb_font_funcs_is_immutable (hb_font_funcs_get_empty ())); 186 _test_fontfuncs_nil (hb_font_funcs_get_empty ()); 187} 188 189static void 190test_fontfuncs_nil (void) 191{ 192 hb_font_funcs_t *ffuncs; 193 194 ffuncs = hb_font_funcs_create (); 195 196 g_assert (!hb_font_funcs_is_immutable (ffuncs)); 197 _test_fontfuncs_nil (hb_font_funcs_get_empty ()); 198 199 hb_font_funcs_destroy (ffuncs); 200} 201 202static hb_bool_t 203contour_point_func1 (hb_font_t *font, void *font_data, 204 hb_codepoint_t glyph, unsigned int point_index, 205 hb_position_t *x, hb_position_t *y, 206 void *user_data) 207{ 208 if (glyph == 1) { 209 *x = 2; 210 *y = 3; 211 return TRUE; 212 } 213 if (glyph == 2) { 214 *x = 4; 215 *y = 5; 216 return TRUE; 217 } 218 219 return FALSE; 220} 221 222static hb_bool_t 223contour_point_func2 (hb_font_t *font, void *font_data, 224 hb_codepoint_t glyph, unsigned int point_index, 225 hb_position_t *x, hb_position_t *y, 226 void *user_data) 227{ 228 if (glyph == 1) { 229 *x = 6; 230 *y = 7; 231 return TRUE; 232 } 233 234 return hb_font_get_glyph_contour_point (hb_font_get_parent (font), 235 glyph, point_index, x, y); 236} 237 238static hb_position_t 239glyph_h_advance_func1 (hb_font_t *font, void *font_data, 240 hb_codepoint_t glyph, 241 void *user_data) 242{ 243 if (glyph == 1) 244 return 8; 245 246 return 0; 247} 248 249static void 250test_fontfuncs_subclassing (void) 251{ 252 hb_blob_t *blob; 253 hb_face_t *face; 254 255 hb_font_funcs_t *ffuncs1; 256 hb_font_funcs_t *ffuncs2; 257 258 hb_font_t *font1; 259 hb_font_t *font2; 260 hb_font_t *font3; 261 262 hb_position_t x; 263 hb_position_t y; 264 265 blob = hb_blob_create (test_data, sizeof (test_data), HB_MEMORY_MODE_READONLY, NULL, NULL); 266 face = hb_face_create (blob, 0); 267 hb_blob_destroy (blob); 268 font1 = hb_font_create (face); 269 hb_face_destroy (face); 270 hb_font_set_scale (font1, 10, 10); 271 272 /* setup font1 */ 273 ffuncs1 = hb_font_funcs_create (); 274 hb_font_funcs_set_glyph_contour_point_func (ffuncs1, contour_point_func1, NULL, NULL); 275 hb_font_funcs_set_glyph_h_advance_func (ffuncs1, glyph_h_advance_func1, NULL, NULL); 276 hb_font_set_funcs (font1, ffuncs1, NULL, NULL); 277 hb_font_funcs_destroy (ffuncs1); 278 279 x = y = 1; 280 g_assert (hb_font_get_glyph_contour_point_for_origin (font1, 1, 2, HB_DIRECTION_LTR, &x, &y)); 281 g_assert_cmpint (x, ==, 2); 282 g_assert_cmpint (y, ==, 3); 283 g_assert (hb_font_get_glyph_contour_point_for_origin (font1, 2, 5, HB_DIRECTION_LTR, &x, &y)); 284 g_assert_cmpint (x, ==, 4); 285 g_assert_cmpint (y, ==, 5); 286 g_assert (!hb_font_get_glyph_contour_point_for_origin (font1, 3, 7, HB_DIRECTION_RTL, &x, &y)); 287 g_assert_cmpint (x, ==, 0); 288 g_assert_cmpint (y, ==, 0); 289 x = hb_font_get_glyph_h_advance (font1, 1); 290 g_assert_cmpint (x, ==, 8); 291 x = hb_font_get_glyph_h_advance (font1, 2); 292 g_assert_cmpint (x, ==, 0); 293 294 295 font2 = hb_font_create_sub_font (font1); 296 g_assert (hb_font_is_immutable (font1)); 297 hb_font_destroy (font1); 298 299 /* setup font2 to override some funcs */ 300 ffuncs2 = hb_font_funcs_create (); 301 hb_font_funcs_set_glyph_contour_point_func (ffuncs2, contour_point_func2, NULL, NULL); 302 hb_font_set_funcs (font2, ffuncs2, NULL, NULL); 303 hb_font_funcs_destroy (ffuncs2); 304 305 x = y = 1; 306 g_assert (hb_font_get_glyph_contour_point_for_origin (font2, 1, 2, HB_DIRECTION_LTR, &x, &y)); 307 g_assert_cmpint (x, ==, 6); 308 g_assert_cmpint (y, ==, 7); 309 g_assert (hb_font_get_glyph_contour_point_for_origin (font2, 2, 5, HB_DIRECTION_RTL, &x, &y)); 310 g_assert_cmpint (x, ==, 4); 311 g_assert_cmpint (y, ==, 5); 312 g_assert (!hb_font_get_glyph_contour_point_for_origin (font2, 3, 7, HB_DIRECTION_LTR, &x, &y)); 313 g_assert_cmpint (x, ==, 0); 314 g_assert_cmpint (y, ==, 0); 315 x = hb_font_get_glyph_h_advance (font2, 1); 316 g_assert_cmpint (x, ==, 8); 317 x = hb_font_get_glyph_h_advance (font2, 2); 318 g_assert_cmpint (x, ==, 0); 319 320 321 font3 = hb_font_create_sub_font (font2); 322 g_assert (hb_font_is_immutable (font2)); 323 hb_font_destroy (font2); 324 325 /* setup font3 to override scale */ 326 hb_font_set_scale (font3, 20, 30); 327 328 x = y = 1; 329 g_assert (hb_font_get_glyph_contour_point_for_origin (font3, 1, 2, HB_DIRECTION_RTL, &x, &y)); 330 g_assert_cmpint (x, ==, 6*2); 331 g_assert_cmpint (y, ==, 7*3); 332 g_assert (hb_font_get_glyph_contour_point_for_origin (font3, 2, 5, HB_DIRECTION_LTR, &x, &y)); 333 g_assert_cmpint (x, ==, 4*2); 334 g_assert_cmpint (y, ==, 5*3); 335 g_assert (!hb_font_get_glyph_contour_point_for_origin (font3, 3, 7, HB_DIRECTION_LTR, &x, &y)); 336 g_assert_cmpint (x, ==, 0*2); 337 g_assert_cmpint (y, ==, 0*3); 338 x = hb_font_get_glyph_h_advance (font3, 1); 339 g_assert_cmpint (x, ==, 8*2); 340 x = hb_font_get_glyph_h_advance (font3, 2); 341 g_assert_cmpint (x, ==, 0*2); 342 343 344 hb_font_destroy (font3); 345} 346 347 348static void 349test_font_empty (void) 350{ 351 g_assert (hb_font_get_empty ()); 352 g_assert (hb_font_get_empty () == hb_font_create (hb_face_get_empty ())); 353 g_assert (hb_font_get_empty () == hb_font_create (NULL)); 354 g_assert (hb_font_get_empty () == hb_font_create_sub_font (NULL)); 355 g_assert (hb_font_is_immutable (hb_font_get_empty ())); 356 357 g_assert (hb_font_get_face (hb_font_get_empty ()) == hb_face_get_empty ()); 358 g_assert (hb_font_get_parent (hb_font_get_empty ()) == NULL); 359} 360 361static void 362test_font_properties (void) 363{ 364 hb_blob_t *blob; 365 hb_face_t *face; 366 hb_font_t *font; 367 hb_font_t *subfont; 368 int x_scale, y_scale; 369 unsigned int x_ppem, y_ppem; 370 371 blob = hb_blob_create (test_data, sizeof (test_data), HB_MEMORY_MODE_READONLY, NULL, NULL); 372 face = hb_face_create (blob, 0); 373 hb_blob_destroy (blob); 374 font = hb_font_create (face); 375 hb_face_destroy (face); 376 377 378 g_assert (hb_font_get_face (font) == face); 379 g_assert (hb_font_get_parent (font) == NULL); 380 381 382 /* Check scale */ 383 384 hb_font_get_scale (font, NULL, NULL); 385 x_scale = y_scale = 13; 386 hb_font_get_scale (font, &x_scale, NULL); 387 g_assert_cmpint (x_scale, ==, 0); 388 x_scale = y_scale = 13; 389 hb_font_get_scale (font, NULL, &y_scale); 390 g_assert_cmpint (y_scale, ==, 0); 391 x_scale = y_scale = 13; 392 hb_font_get_scale (font, &x_scale, &y_scale); 393 g_assert_cmpint (x_scale, ==, 0); 394 g_assert_cmpint (y_scale, ==, 0); 395 396 hb_font_set_scale (font, 17, 19); 397 398 x_scale = y_scale = 13; 399 hb_font_get_scale (font, &x_scale, &y_scale); 400 g_assert_cmpint (x_scale, ==, 17); 401 g_assert_cmpint (y_scale, ==, 19); 402 403 404 /* Check ppem */ 405 406 hb_font_get_ppem (font, NULL, NULL); 407 x_ppem = y_ppem = 13; 408 hb_font_get_ppem (font, &x_ppem, NULL); 409 g_assert_cmpint (x_ppem, ==, 0); 410 x_ppem = y_ppem = 13; 411 hb_font_get_ppem (font, NULL, &y_ppem); 412 g_assert_cmpint (y_ppem, ==, 0); 413 x_ppem = y_ppem = 13; 414 hb_font_get_ppem (font, &x_ppem, &y_ppem); 415 g_assert_cmpint (x_ppem, ==, 0); 416 g_assert_cmpint (y_ppem, ==, 0); 417 418 hb_font_set_ppem (font, 17, 19); 419 420 x_ppem = y_ppem = 13; 421 hb_font_get_ppem (font, &x_ppem, &y_ppem); 422 g_assert_cmpint (x_ppem, ==, 17); 423 g_assert_cmpint (y_ppem, ==, 19); 424 425 426 /* Check immutable */ 427 428 g_assert (!hb_font_is_immutable (font)); 429 hb_font_make_immutable (font); 430 g_assert (hb_font_is_immutable (font)); 431 432 hb_font_set_scale (font, 10, 12); 433 x_scale = y_scale = 13; 434 hb_font_get_scale (font, &x_scale, &y_scale); 435 g_assert_cmpint (x_scale, ==, 17); 436 g_assert_cmpint (y_scale, ==, 19); 437 438 hb_font_set_ppem (font, 10, 12); 439 x_ppem = y_ppem = 13; 440 hb_font_get_ppem (font, &x_ppem, &y_ppem); 441 g_assert_cmpint (x_ppem, ==, 17); 442 g_assert_cmpint (y_ppem, ==, 19); 443 444 445 /* sub_font now */ 446 subfont = hb_font_create_sub_font (font); 447 hb_font_destroy (font); 448 449 g_assert (hb_font_get_parent (subfont) == font); 450 g_assert (hb_font_get_face (subfont) == face); 451 452 /* scale */ 453 x_scale = y_scale = 13; 454 hb_font_get_scale (subfont, &x_scale, &y_scale); 455 g_assert_cmpint (x_scale, ==, 17); 456 g_assert_cmpint (y_scale, ==, 19); 457 hb_font_set_scale (subfont, 10, 12); 458 x_scale = y_scale = 13; 459 hb_font_get_scale (subfont, &x_scale, &y_scale); 460 g_assert_cmpint (x_scale, ==, 10); 461 g_assert_cmpint (y_scale, ==, 12); 462 x_scale = y_scale = 13; 463 hb_font_get_scale (font, &x_scale, &y_scale); 464 g_assert_cmpint (x_scale, ==, 17); 465 g_assert_cmpint (y_scale, ==, 19); 466 467 /* ppem */ 468 x_ppem = y_ppem = 13; 469 hb_font_get_ppem (subfont, &x_ppem, &y_ppem); 470 g_assert_cmpint (x_ppem, ==, 17); 471 g_assert_cmpint (y_ppem, ==, 19); 472 hb_font_set_ppem (subfont, 10, 12); 473 x_ppem = y_ppem = 13; 474 hb_font_get_ppem (subfont, &x_ppem, &y_ppem); 475 g_assert_cmpint (x_ppem, ==, 10); 476 g_assert_cmpint (y_ppem, ==, 12); 477 x_ppem = y_ppem = 13; 478 hb_font_get_ppem (font, &x_ppem, &y_ppem); 479 g_assert_cmpint (x_ppem, ==, 17); 480 g_assert_cmpint (y_ppem, ==, 19); 481 482 hb_font_destroy (subfont); 483} 484 485int 486main (int argc, char **argv) 487{ 488 hb_test_init (&argc, &argv); 489 490 hb_test_add (test_face_empty); 491 hb_test_add (test_face_create); 492 hb_test_add (test_face_createfortables); 493 494 hb_test_add (test_fontfuncs_empty); 495 hb_test_add (test_fontfuncs_nil); 496 hb_test_add (test_fontfuncs_subclassing); 497 498 hb_test_add (test_font_empty); 499 hb_test_add (test_font_properties); 500 501 return hb_test_run(); 502} 503