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
32 static const char test_data[] = "test\0data";
33
34
35 static void
test_face_empty(void)36 test_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
47 static void
test_face_create(void)48 test_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
65 static void
free_up(void * user_data)66 free_up (void *user_data)
67 {
68 int *freed = (int *) user_data;
69
70 g_assert (!*freed);
71
72 (*freed)++;
73 }
74
75 static hb_blob_t *
get_table(hb_face_t * face,hb_tag_t tag,void * user_data)76 get_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
84 static void
test_face_createfortables(void)85 test_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
112 static void
_test_font_nil_funcs(hb_font_t * font)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 unsigned int upem = hb_face_get_upem (hb_font_get_face (font));
119
120 x = y = 13;
121 g_assert (!hb_font_get_glyph_contour_point (font, 17, 2, &x, &y));
122 g_assert_cmpint (x, ==, 0);
123 g_assert_cmpint (y, ==, 0);
124
125 x = hb_font_get_glyph_h_advance (font, 17);
126 g_assert_cmpint (x, ==, upem);
127
128 extents.x_bearing = extents.y_bearing = 13;
129 extents.width = extents.height = 15;
130 hb_font_get_glyph_extents (font, 17, &extents);
131 g_assert_cmpint (extents.x_bearing, ==, 0);
132 g_assert_cmpint (extents.y_bearing, ==, 0);
133 g_assert_cmpint (extents.width, ==, 0);
134 g_assert_cmpint (extents.height, ==, 0);
135
136 glyph = 3;
137 g_assert (!hb_font_get_glyph (font, 17, 2, &glyph));
138 g_assert_cmpint (glyph, ==, 0);
139
140 x = hb_font_get_glyph_h_kerning (font, 17, 19);
141 g_assert_cmpint (x, ==, 0);
142 }
143
144 static void
_test_fontfuncs_nil(hb_font_funcs_t * ffuncs)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
181 static void
test_fontfuncs_empty(void)182 test_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
189 static void
test_fontfuncs_nil(void)190 test_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
202 static hb_bool_t
contour_point_func1(hb_font_t * font,void * font_data,hb_codepoint_t glyph,unsigned int point_index,hb_position_t * x,hb_position_t * y,void * user_data)203 contour_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
222 static hb_bool_t
contour_point_func2(hb_font_t * font,void * font_data,hb_codepoint_t glyph,unsigned int point_index,hb_position_t * x,hb_position_t * y,void * user_data)223 contour_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
238 static hb_position_t
glyph_h_advance_func1(hb_font_t * font,void * font_data,hb_codepoint_t glyph,void * user_data)239 glyph_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
249 static void
test_fontfuncs_subclassing(void)250 test_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 /* creating sub-font doesn't make the parent font immutable;
295 * making a font immutable however makes it's lineage immutable.
296 */
297 font2 = hb_font_create_sub_font (font1);
298 font3 = hb_font_create_sub_font (font2);
299 g_assert (!hb_font_is_immutable (font1));
300 g_assert (!hb_font_is_immutable (font2));
301 g_assert (!hb_font_is_immutable (font3));
302 hb_font_make_immutable (font3);
303 g_assert (hb_font_is_immutable (font1));
304 g_assert (hb_font_is_immutable (font2));
305 g_assert (hb_font_is_immutable (font3));
306 hb_font_destroy (font2);
307 hb_font_destroy (font3);
308
309 font2 = hb_font_create_sub_font (font1);
310 hb_font_destroy (font1);
311
312 /* setup font2 to override some funcs */
313 ffuncs2 = hb_font_funcs_create ();
314 hb_font_funcs_set_glyph_contour_point_func (ffuncs2, contour_point_func2, NULL, NULL);
315 hb_font_set_funcs (font2, ffuncs2, NULL, NULL);
316 hb_font_funcs_destroy (ffuncs2);
317
318 x = y = 1;
319 g_assert (hb_font_get_glyph_contour_point_for_origin (font2, 1, 2, HB_DIRECTION_LTR, &x, &y));
320 g_assert_cmpint (x, ==, 6);
321 g_assert_cmpint (y, ==, 7);
322 g_assert (hb_font_get_glyph_contour_point_for_origin (font2, 2, 5, HB_DIRECTION_RTL, &x, &y));
323 g_assert_cmpint (x, ==, 4);
324 g_assert_cmpint (y, ==, 5);
325 g_assert (!hb_font_get_glyph_contour_point_for_origin (font2, 3, 7, HB_DIRECTION_LTR, &x, &y));
326 g_assert_cmpint (x, ==, 0);
327 g_assert_cmpint (y, ==, 0);
328 x = hb_font_get_glyph_h_advance (font2, 1);
329 g_assert_cmpint (x, ==, 8);
330 x = hb_font_get_glyph_h_advance (font2, 2);
331 g_assert_cmpint (x, ==, 0);
332
333 /* setup font3 to override scale */
334 font3 = hb_font_create_sub_font (font2);
335 hb_font_set_scale (font3, 20, 30);
336
337 x = y = 1;
338 g_assert (hb_font_get_glyph_contour_point_for_origin (font3, 1, 2, HB_DIRECTION_RTL, &x, &y));
339 g_assert_cmpint (x, ==, 6*2);
340 g_assert_cmpint (y, ==, 7*3);
341 g_assert (hb_font_get_glyph_contour_point_for_origin (font3, 2, 5, HB_DIRECTION_LTR, &x, &y));
342 g_assert_cmpint (x, ==, 4*2);
343 g_assert_cmpint (y, ==, 5*3);
344 g_assert (!hb_font_get_glyph_contour_point_for_origin (font3, 3, 7, HB_DIRECTION_LTR, &x, &y));
345 g_assert_cmpint (x, ==, 0*2);
346 g_assert_cmpint (y, ==, 0*3);
347 x = hb_font_get_glyph_h_advance (font3, 1);
348 g_assert_cmpint (x, ==, 8*2);
349 x = hb_font_get_glyph_h_advance (font3, 2);
350 g_assert_cmpint (x, ==, 0*2);
351
352
353 hb_font_destroy (font3);
354 }
355
356
357 static void
test_font_empty(void)358 test_font_empty (void)
359 {
360 g_assert (hb_font_get_empty ());
361 g_assert (hb_font_get_empty () != hb_font_create (hb_face_get_empty ()));
362 g_assert (hb_font_get_empty () != hb_font_create (NULL));
363 g_assert (hb_font_get_empty () != hb_font_create_sub_font (NULL));
364 g_assert (hb_font_is_immutable (hb_font_get_empty ()));
365
366 g_assert (hb_font_get_face (hb_font_get_empty ()) == hb_face_get_empty ());
367 g_assert (hb_font_get_parent (hb_font_get_empty ()) == NULL);
368 }
369
370 static void
test_font_properties(void)371 test_font_properties (void)
372 {
373 hb_blob_t *blob;
374 hb_face_t *face;
375 hb_font_t *font;
376 hb_font_t *subfont;
377 int x_scale, y_scale;
378 unsigned int x_ppem, y_ppem;
379 unsigned int upem;
380
381 blob = hb_blob_create (test_data, sizeof (test_data), HB_MEMORY_MODE_READONLY, NULL, NULL);
382 face = hb_face_create (blob, 0);
383 hb_blob_destroy (blob);
384 font = hb_font_create (face);
385 hb_face_destroy (face);
386
387
388 g_assert (hb_font_get_face (font) == face);
389 g_assert (hb_font_get_parent (font) == hb_font_get_empty ());
390 subfont = hb_font_create_sub_font (font);
391 g_assert (hb_font_get_parent (subfont) == font);
392 hb_font_set_parent(subfont, NULL);
393 g_assert (hb_font_get_parent (subfont) == hb_font_get_empty());
394 hb_font_set_parent(subfont, font);
395 g_assert (hb_font_get_parent (subfont) == font);
396 hb_font_set_parent(subfont, NULL);
397 hb_font_make_immutable (subfont);
398 g_assert (hb_font_get_parent (subfont) == hb_font_get_empty());
399 hb_font_set_parent(subfont, font);
400 g_assert (hb_font_get_parent (subfont) == hb_font_get_empty());
401 hb_font_destroy (subfont);
402
403
404 /* Check scale */
405
406 upem = hb_face_get_upem (hb_font_get_face (font));
407 hb_font_get_scale (font, NULL, NULL);
408 x_scale = y_scale = 13;
409 hb_font_get_scale (font, &x_scale, NULL);
410 g_assert_cmpint (x_scale, ==, upem);
411 x_scale = y_scale = 13;
412 hb_font_get_scale (font, NULL, &y_scale);
413 g_assert_cmpint (y_scale, ==, upem);
414 x_scale = y_scale = 13;
415 hb_font_get_scale (font, &x_scale, &y_scale);
416 g_assert_cmpint (x_scale, ==, upem);
417 g_assert_cmpint (y_scale, ==, upem);
418
419 hb_font_set_scale (font, 17, 19);
420
421 x_scale = y_scale = 13;
422 hb_font_get_scale (font, &x_scale, &y_scale);
423 g_assert_cmpint (x_scale, ==, 17);
424 g_assert_cmpint (y_scale, ==, 19);
425
426
427 /* Check ppem */
428
429 hb_font_get_ppem (font, NULL, NULL);
430 x_ppem = y_ppem = 13;
431 hb_font_get_ppem (font, &x_ppem, NULL);
432 g_assert_cmpint (x_ppem, ==, 0);
433 x_ppem = y_ppem = 13;
434 hb_font_get_ppem (font, NULL, &y_ppem);
435 g_assert_cmpint (y_ppem, ==, 0);
436 x_ppem = y_ppem = 13;
437 hb_font_get_ppem (font, &x_ppem, &y_ppem);
438 g_assert_cmpint (x_ppem, ==, 0);
439 g_assert_cmpint (y_ppem, ==, 0);
440
441 hb_font_set_ppem (font, 17, 19);
442
443 x_ppem = y_ppem = 13;
444 hb_font_get_ppem (font, &x_ppem, &y_ppem);
445 g_assert_cmpint (x_ppem, ==, 17);
446 g_assert_cmpint (y_ppem, ==, 19);
447
448
449 /* Check immutable */
450
451 g_assert (!hb_font_is_immutable (font));
452 hb_font_make_immutable (font);
453 g_assert (hb_font_is_immutable (font));
454
455 hb_font_set_scale (font, 10, 12);
456 x_scale = y_scale = 13;
457 hb_font_get_scale (font, &x_scale, &y_scale);
458 g_assert_cmpint (x_scale, ==, 17);
459 g_assert_cmpint (y_scale, ==, 19);
460
461 hb_font_set_ppem (font, 10, 12);
462 x_ppem = y_ppem = 13;
463 hb_font_get_ppem (font, &x_ppem, &y_ppem);
464 g_assert_cmpint (x_ppem, ==, 17);
465 g_assert_cmpint (y_ppem, ==, 19);
466
467
468 /* sub_font now */
469 subfont = hb_font_create_sub_font (font);
470 hb_font_destroy (font);
471
472 g_assert (hb_font_get_parent (subfont) == font);
473 g_assert (hb_font_get_face (subfont) == face);
474
475 /* scale */
476 x_scale = y_scale = 13;
477 hb_font_get_scale (subfont, &x_scale, &y_scale);
478 g_assert_cmpint (x_scale, ==, 17);
479 g_assert_cmpint (y_scale, ==, 19);
480 hb_font_set_scale (subfont, 10, 12);
481 x_scale = y_scale = 13;
482 hb_font_get_scale (subfont, &x_scale, &y_scale);
483 g_assert_cmpint (x_scale, ==, 10);
484 g_assert_cmpint (y_scale, ==, 12);
485 x_scale = y_scale = 13;
486 hb_font_get_scale (font, &x_scale, &y_scale);
487 g_assert_cmpint (x_scale, ==, 17);
488 g_assert_cmpint (y_scale, ==, 19);
489
490 /* ppem */
491 x_ppem = y_ppem = 13;
492 hb_font_get_ppem (subfont, &x_ppem, &y_ppem);
493 g_assert_cmpint (x_ppem, ==, 17);
494 g_assert_cmpint (y_ppem, ==, 19);
495 hb_font_set_ppem (subfont, 10, 12);
496 x_ppem = y_ppem = 13;
497 hb_font_get_ppem (subfont, &x_ppem, &y_ppem);
498 g_assert_cmpint (x_ppem, ==, 10);
499 g_assert_cmpint (y_ppem, ==, 12);
500 x_ppem = y_ppem = 13;
501 hb_font_get_ppem (font, &x_ppem, &y_ppem);
502 g_assert_cmpint (x_ppem, ==, 17);
503 g_assert_cmpint (y_ppem, ==, 19);
504
505 hb_font_destroy (subfont);
506 }
507
508 int
main(int argc,char ** argv)509 main (int argc, char **argv)
510 {
511 hb_test_init (&argc, &argv);
512
513 hb_test_add (test_face_empty);
514 hb_test_add (test_face_create);
515 hb_test_add (test_face_createfortables);
516
517 hb_test_add (test_fontfuncs_empty);
518 hb_test_add (test_fontfuncs_nil);
519 hb_test_add (test_fontfuncs_subclassing);
520
521 hb_test_add (test_font_empty);
522 hb_test_add (test_font_properties);
523
524 return hb_test_run();
525 }
526