1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>cairo_font_options_t: Cairo: A Vector Graphics Library</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="Cairo: A Vector Graphics Library">
<link rel="up" href="cairo-fonts.html" title="Fonts">
<link rel="prev" href="cairo-cairo-scaled-font-t.html" title="cairo_scaled_font_t">
<link rel="next" href="cairo-FreeType-Fonts.html" title="FreeType Fonts">
<meta name="generator" content="GTK-Doc V1.27 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span>
<a href="#cairo-cairo-font-options-t.description" class="shortcut">Description</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="cairo-fonts.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="cairo-cairo-scaled-font-t.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="cairo-FreeType-Fonts.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="cairo-cairo-font-options-t"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="cairo-cairo-font-options-t.top_of_page"></a>cairo_font_options_t</span></h2>
<p>cairo_font_options_t — How a font should be rendered</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="cairo-cairo-font-options-t.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="returnvalue">cairo_font_options_t</span></a> *
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-create" title="cairo_font_options_create ()">cairo_font_options_create</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="returnvalue">cairo_font_options_t</span></a> *
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-copy" title="cairo_font_options_copy ()">cairo_font_options_copy</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-destroy" title="cairo_font_options_destroy ()">cairo_font_options_destroy</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-Error-handling.html#cairo-status-t" title="enum cairo_status_t"><span class="returnvalue">cairo_status_t</span></a>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-status" title="cairo_font_options_status ()">cairo_font_options_status</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-merge" title="cairo_font_options_merge ()">cairo_font_options_merge</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">unsigned <span class="returnvalue">long</span>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-hash" title="cairo_font_options_hash ()">cairo_font_options_hash</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-Types.html#cairo-bool-t" title="cairo_bool_t"><span class="returnvalue">cairo_bool_t</span></a>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-equal" title="cairo_font_options_equal ()">cairo_font_options_equal</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-set-antialias" title="cairo_font_options_set_antialias ()">cairo_font_options_set_antialias</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-cairo-t.html#cairo-antialias-t" title="enum cairo_antialias_t"><span class="returnvalue">cairo_antialias_t</span></a>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-get-antialias" title="cairo_font_options_get_antialias ()">cairo_font_options_get_antialias</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-set-subpixel-order" title="cairo_font_options_set_subpixel_order ()">cairo_font_options_set_subpixel_order</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-subpixel-order-t" title="enum cairo_subpixel_order_t"><span class="returnvalue">cairo_subpixel_order_t</span></a>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-get-subpixel-order" title="cairo_font_options_get_subpixel_order ()">cairo_font_options_get_subpixel_order</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-set-hint-style" title="cairo_font_options_set_hint_style ()">cairo_font_options_set_hint_style</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-style-t" title="enum cairo_hint_style_t"><span class="returnvalue">cairo_hint_style_t</span></a>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-get-hint-style" title="cairo_font_options_get_hint_style ()">cairo_font_options_get_hint_style</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-set-hint-metrics" title="cairo_font_options_set_hint_metrics ()">cairo_font_options_set_hint_metrics</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-metrics-t" title="enum cairo_hint_metrics_t"><span class="returnvalue">cairo_hint_metrics_t</span></a>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-get-hint-metrics" title="cairo_font_options_get_hint_metrics ()">cairo_font_options_get_hint_metrics</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <span class="returnvalue">char</span> *
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-get-variations" title="cairo_font_options_get_variations ()">cairo_font_options_get_variations</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-set-variations" title="cairo_font_options_set_variations ()">cairo_font_options_set_variations</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="cairo-cairo-font-options-t.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="typedef_keyword">typedef</td>
<td class="function_name"><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t">cairo_font_options_t</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="cairo-cairo-font-options-t.html#cairo-subpixel-order-t" title="enum cairo_subpixel_order_t">cairo_subpixel_order_t</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-style-t" title="enum cairo_hint_style_t">cairo_hint_style_t</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-metrics-t" title="enum cairo_hint_metrics_t">cairo_hint_metrics_t</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="cairo-cairo-font-options-t.description"></a><h2>Description</h2>
<p>The font options specify how fonts should be rendered. Most of the
time the font options implied by a surface are just right and do not
need any changes, but for pixel-based targets tweaking font options
may result in superior output on a particular display.</p>
</div>
<div class="refsect1">
<a name="cairo-cairo-font-options-t.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="cairo-font-options-create"></a><h3>cairo_font_options_create ()</h3>
<pre class="programlisting"><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="returnvalue">cairo_font_options_t</span></a> *
cairo_font_options_create (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Allocates a new font options object with all options initialized
to default values.</p>
<div class="refsect3">
<a name="cairo-font-options-create.returns"></a><h4>Returns</h4>
<p> a newly allocated <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a>. Free with
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-destroy" title="cairo_font_options_destroy ()"><code class="function">cairo_font_options_destroy()</code></a>. This function always returns a
valid pointer; if memory cannot be allocated, then a special
error object is returned where all operations on the object do nothing.
You can check for this with <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-status" title="cairo_font_options_status ()"><code class="function">cairo_font_options_status()</code></a>.</p>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-copy"></a><h3>cairo_font_options_copy ()</h3>
<pre class="programlisting"><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="returnvalue">cairo_font_options_t</span></a> *
cairo_font_options_copy (<em class="parameter"><code>const <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *original</code></em>);</pre>
<p>Allocates a new font options object copying the option values from
<em class="parameter"><code>original</code></em>
.</p>
<div class="refsect3">
<a name="cairo-font-options-copy.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>original</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-font-options-copy.returns"></a><h4>Returns</h4>
<p> a newly allocated <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a>. Free with
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-destroy" title="cairo_font_options_destroy ()"><code class="function">cairo_font_options_destroy()</code></a>. This function always returns a
valid pointer; if memory cannot be allocated, then a special
error object is returned where all operations on the object do nothing.
You can check for this with <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-status" title="cairo_font_options_status ()"><code class="function">cairo_font_options_status()</code></a>.</p>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-destroy"></a><h3>cairo_font_options_destroy ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cairo_font_options_destroy (<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>);</pre>
<p>Destroys a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> object created with
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-create" title="cairo_font_options_create ()"><code class="function">cairo_font_options_create()</code></a> or <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-copy" title="cairo_font_options_copy ()"><code class="function">cairo_font_options_copy()</code></a>.</p>
<div class="refsect3">
<a name="cairo-font-options-destroy.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-status"></a><h3>cairo_font_options_status ()</h3>
<pre class="programlisting"><a class="link" href="cairo-Error-handling.html#cairo-status-t" title="enum cairo_status_t"><span class="returnvalue">cairo_status_t</span></a>
cairo_font_options_status (<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>);</pre>
<p>Checks whether an error has previously occurred for this
font options object</p>
<div class="refsect3">
<a name="cairo-font-options-status.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-font-options-status.returns"></a><h4>Returns</h4>
<p> <a class="link" href="cairo-Error-handling.html#CAIRO-STATUS-SUCCESS:CAPS"><code class="literal">CAIRO_STATUS_SUCCESS</code></a> or <a class="link" href="cairo-Error-handling.html#CAIRO-STATUS-NO-MEMORY:CAPS"><code class="literal">CAIRO_STATUS_NO_MEMORY</code></a></p>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-merge"></a><h3>cairo_font_options_merge ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cairo_font_options_merge (<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>,
<em class="parameter"><code>const <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *other</code></em>);</pre>
<p>Merges non-default options from <em class="parameter"><code>other</code></em>
into <em class="parameter"><code>options</code></em>
, replacing
existing values. This operation can be thought of as somewhat
similar to compositing <em class="parameter"><code>other</code></em>
onto <em class="parameter"><code>options</code></em>
with the operation
of <a class="link" href="cairo-cairo-t.html#CAIRO-OPERATOR-OVER:CAPS"><code class="literal">CAIRO_OPERATOR_OVER</code></a>.</p>
<div class="refsect3">
<a name="cairo-font-options-merge.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>other</p></td>
<td class="parameter_description"><p>another <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-hash"></a><h3>cairo_font_options_hash ()</h3>
<pre class="programlisting">unsigned <span class="returnvalue">long</span>
cairo_font_options_hash (<em class="parameter"><code>const <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>);</pre>
<p>Compute a hash for the font options object; this value will
be useful when storing an object containing a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a>
in a hash table.</p>
<div class="refsect3">
<a name="cairo-font-options-hash.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-font-options-hash.returns"></a><h4>Returns</h4>
<p> the hash value for the font options object.
The return value can be cast to a 32-bit type if a
32-bit hash value is needed.</p>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-equal"></a><h3>cairo_font_options_equal ()</h3>
<pre class="programlisting"><a class="link" href="cairo-Types.html#cairo-bool-t" title="cairo_bool_t"><span class="returnvalue">cairo_bool_t</span></a>
cairo_font_options_equal (<em class="parameter"><code>const <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>,
<em class="parameter"><code>const <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *other</code></em>);</pre>
<p>Compares two font options objects for equality.</p>
<div class="refsect3">
<a name="cairo-font-options-equal.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>other</p></td>
<td class="parameter_description"><p>another <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-font-options-equal.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if all fields of the two font options objects match.
Note that this function will return <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if either object is in
error.</p>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-set-antialias"></a><h3>cairo_font_options_set_antialias ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cairo_font_options_set_antialias (<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>,
<em class="parameter"><code><a class="link" href="cairo-cairo-t.html#cairo-antialias-t" title="enum cairo_antialias_t"><span class="type">cairo_antialias_t</span></a> antialias</code></em>);</pre>
<p>Sets the antialiasing mode for the font options object. This
specifies the type of antialiasing to do when rendering text.</p>
<div class="refsect3">
<a name="cairo-font-options-set-antialias.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>antialias</p></td>
<td class="parameter_description"><p>the new antialiasing mode</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-get-antialias"></a><h3>cairo_font_options_get_antialias ()</h3>
<pre class="programlisting"><a class="link" href="cairo-cairo-t.html#cairo-antialias-t" title="enum cairo_antialias_t"><span class="returnvalue">cairo_antialias_t</span></a>
cairo_font_options_get_antialias (<em class="parameter"><code>const <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>);</pre>
<p>Gets the antialiasing mode for the font options object.</p>
<div class="refsect3">
<a name="cairo-font-options-get-antialias.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-font-options-get-antialias.returns"></a><h4>Returns</h4>
<p> the antialiasing mode</p>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-set-subpixel-order"></a><h3>cairo_font_options_set_subpixel_order ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cairo_font_options_set_subpixel_order (<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>,
<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-subpixel-order-t" title="enum cairo_subpixel_order_t"><span class="type">cairo_subpixel_order_t</span></a> subpixel_order</code></em>);</pre>
<p>Sets the subpixel order for the font options object. The subpixel
order specifies the order of color elements within each pixel on
the display device when rendering with an antialiasing mode of
<a class="link" href="cairo-cairo-t.html#CAIRO-ANTIALIAS-SUBPIXEL:CAPS"><code class="literal">CAIRO_ANTIALIAS_SUBPIXEL</code></a>. See the documentation for
<a class="link" href="cairo-cairo-font-options-t.html#cairo-subpixel-order-t" title="enum cairo_subpixel_order_t"><span class="type">cairo_subpixel_order_t</span></a> for full details.</p>
<div class="refsect3">
<a name="cairo-font-options-set-subpixel-order.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>subpixel_order</p></td>
<td class="parameter_description"><p>the new subpixel order</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-get-subpixel-order"></a><h3>cairo_font_options_get_subpixel_order ()</h3>
<pre class="programlisting"><a class="link" href="cairo-cairo-font-options-t.html#cairo-subpixel-order-t" title="enum cairo_subpixel_order_t"><span class="returnvalue">cairo_subpixel_order_t</span></a>
cairo_font_options_get_subpixel_order (<em class="parameter"><code>const <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>);</pre>
<p>Gets the subpixel order for the font options object.
See the documentation for <a class="link" href="cairo-cairo-font-options-t.html#cairo-subpixel-order-t" title="enum cairo_subpixel_order_t"><span class="type">cairo_subpixel_order_t</span></a> for full details.</p>
<div class="refsect3">
<a name="cairo-font-options-get-subpixel-order.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-font-options-get-subpixel-order.returns"></a><h4>Returns</h4>
<p> the subpixel order for the font options object</p>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-set-hint-style"></a><h3>cairo_font_options_set_hint_style ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cairo_font_options_set_hint_style (<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>,
<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-style-t" title="enum cairo_hint_style_t"><span class="type">cairo_hint_style_t</span></a> hint_style</code></em>);</pre>
<p>Sets the hint style for font outlines for the font options object.
This controls whether to fit font outlines to the pixel grid,
and if so, whether to optimize for fidelity or contrast.
See the documentation for <a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-style-t" title="enum cairo_hint_style_t"><span class="type">cairo_hint_style_t</span></a> for full details.</p>
<div class="refsect3">
<a name="cairo-font-options-set-hint-style.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>hint_style</p></td>
<td class="parameter_description"><p>the new hint style</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-get-hint-style"></a><h3>cairo_font_options_get_hint_style ()</h3>
<pre class="programlisting"><a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-style-t" title="enum cairo_hint_style_t"><span class="returnvalue">cairo_hint_style_t</span></a>
cairo_font_options_get_hint_style (<em class="parameter"><code>const <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>);</pre>
<p>Gets the hint style for font outlines for the font options object.
See the documentation for <a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-style-t" title="enum cairo_hint_style_t"><span class="type">cairo_hint_style_t</span></a> for full details.</p>
<div class="refsect3">
<a name="cairo-font-options-get-hint-style.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-font-options-get-hint-style.returns"></a><h4>Returns</h4>
<p> the hint style for the font options object</p>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-set-hint-metrics"></a><h3>cairo_font_options_set_hint_metrics ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cairo_font_options_set_hint_metrics (<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>,
<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-metrics-t" title="enum cairo_hint_metrics_t"><span class="type">cairo_hint_metrics_t</span></a> hint_metrics</code></em>);</pre>
<p>Sets the metrics hinting mode for the font options object. This
controls whether metrics are quantized to integer values in
device units.
See the documentation for <a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-metrics-t" title="enum cairo_hint_metrics_t"><span class="type">cairo_hint_metrics_t</span></a> for full details.</p>
<div class="refsect3">
<a name="cairo-font-options-set-hint-metrics.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>hint_metrics</p></td>
<td class="parameter_description"><p>the new metrics hinting mode</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-get-hint-metrics"></a><h3>cairo_font_options_get_hint_metrics ()</h3>
<pre class="programlisting"><a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-metrics-t" title="enum cairo_hint_metrics_t"><span class="returnvalue">cairo_hint_metrics_t</span></a>
cairo_font_options_get_hint_metrics (<em class="parameter"><code>const <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>);</pre>
<p>Gets the metrics hinting mode for the font options object.
See the documentation for <a class="link" href="cairo-cairo-font-options-t.html#cairo-hint-metrics-t" title="enum cairo_hint_metrics_t"><span class="type">cairo_hint_metrics_t</span></a> for full details.</p>
<div class="refsect3">
<a name="cairo-font-options-get-hint-metrics.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-font-options-get-hint-metrics.returns"></a><h4>Returns</h4>
<p> the metrics hinting mode for the font options object</p>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-get-variations"></a><h3>cairo_font_options_get_variations ()</h3>
<pre class="programlisting">const <span class="returnvalue">char</span> *
cairo_font_options_get_variations (<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>);</pre>
<p>Gets the OpenType font variations for the font options object.
See <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-set-variations" title="cairo_font_options_set_variations ()"><code class="function">cairo_font_options_set_variations()</code></a> for details about the
string format.</p>
<div class="refsect3">
<a name="cairo-font-options-get-variations.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-font-options-get-variations.returns"></a><h4>Returns</h4>
<p> the font variations for the font options object. The
returned string belongs to the <em class="parameter"><code>options</code></em>
and must not be modified.
It is valid until either the font options object is destroyed or
the font variations in this object is modified with
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-set-variations" title="cairo_font_options_set_variations ()"><code class="function">cairo_font_options_set_variations()</code></a>.</p>
</div>
<p class="since">Since: 1.16</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-font-options-set-variations"></a><h3>cairo_font_options_set_variations ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cairo_font_options_set_variations (<em class="parameter"><code><a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *variations</code></em>);</pre>
<p>Sets the OpenType font variations for the font options object.
Font variations are specified as a string with a format that
is similar to the CSS font-variation-settings. The string contains
a comma-separated list of axis assignments, which each assignment
consists of a 4-character axis name and a value, separated by
whitespace and optional equals sign.</p>
<p>Examples:</p>
<p>wght=200,wdth=140.5</p>
<p>wght 200 , wdth 140.5</p>
<div class="refsect3">
<a name="cairo-font-options-set-variations.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>variations</p></td>
<td class="parameter_description"><p>the new font variations, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.16</p>
</div>
</div>
<div class="refsect1">
<a name="cairo-cairo-font-options-t.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="cairo-font-options-t"></a><h3>cairo_font_options_t</h3>
<pre class="programlisting">typedef struct _cairo_font_options cairo_font_options_t;
</pre>
<p>An opaque structure holding all options that are used when
rendering fonts.</p>
<p>Individual features of a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> can be set or
accessed using functions named
<code class="function">cairo_font_options_set_<span class="emphasis"><em>feature_name</em></span>()</code> and
<code class="function">cairo_font_options_get_<span class="emphasis"><em>feature_name</em></span>()</code>, like
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-set-antialias" title="cairo_font_options_set_antialias ()"><code class="function">cairo_font_options_set_antialias()</code></a> and
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-get-antialias" title="cairo_font_options_get_antialias ()"><code class="function">cairo_font_options_get_antialias()</code></a>.</p>
<p>New features may be added to a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> in the
future. For this reason, <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-copy" title="cairo_font_options_copy ()"><code class="function">cairo_font_options_copy()</code></a>,
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-equal" title="cairo_font_options_equal ()"><code class="function">cairo_font_options_equal()</code></a>, <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-merge" title="cairo_font_options_merge ()"><code class="function">cairo_font_options_merge()</code></a>, and
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-hash" title="cairo_font_options_hash ()"><code class="function">cairo_font_options_hash()</code></a> should be used to copy, check
for equality, merge, or compute a hash value of
<a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> objects.</p>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-subpixel-order-t"></a><h3>enum cairo_subpixel_order_t</h3>
<p>The subpixel order specifies the order of color elements within
each pixel on the display device when rendering with an
antialiasing mode of <a class="link" href="cairo-cairo-t.html#CAIRO-ANTIALIAS-SUBPIXEL:CAPS"><code class="literal">CAIRO_ANTIALIAS_SUBPIXEL</code></a>.</p>
<div class="refsect3">
<a name="cairo-subpixel-order-t.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-SUBPIXEL-ORDER-DEFAULT:CAPS"></a>CAIRO_SUBPIXEL_ORDER_DEFAULT</p></td>
<td class="enum_member_description">
<p>Use the default subpixel order for
for the target device, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-SUBPIXEL-ORDER-RGB:CAPS"></a>CAIRO_SUBPIXEL_ORDER_RGB</p></td>
<td class="enum_member_description">
<p>Subpixel elements are arranged horizontally
with red at the left, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-SUBPIXEL-ORDER-BGR:CAPS"></a>CAIRO_SUBPIXEL_ORDER_BGR</p></td>
<td class="enum_member_description">
<p>Subpixel elements are arranged horizontally
with blue at the left, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-SUBPIXEL-ORDER-VRGB:CAPS"></a>CAIRO_SUBPIXEL_ORDER_VRGB</p></td>
<td class="enum_member_description">
<p>Subpixel elements are arranged vertically
with red at the top, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-SUBPIXEL-ORDER-VBGR:CAPS"></a>CAIRO_SUBPIXEL_ORDER_VBGR</p></td>
<td class="enum_member_description">
<p>Subpixel elements are arranged vertically
with blue at the top, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-hint-style-t"></a><h3>enum cairo_hint_style_t</h3>
<p>Specifies the type of hinting to do on font outlines. Hinting
is the process of fitting outlines to the pixel grid in order
to improve the appearance of the result. Since hinting outlines
involves distorting them, it also reduces the faithfulness
to the original outline shapes. Not all of the outline hinting
styles are supported by all font backends.</p>
<p>New entries may be added in future versions.</p>
<div class="refsect3">
<a name="cairo-hint-style-t.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-HINT-STYLE-DEFAULT:CAPS"></a>CAIRO_HINT_STYLE_DEFAULT</p></td>
<td class="enum_member_description">
<p>Use the default hint style for
font backend and target device, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-HINT-STYLE-NONE:CAPS"></a>CAIRO_HINT_STYLE_NONE</p></td>
<td class="enum_member_description">
<p>Do not hint outlines, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-HINT-STYLE-SLIGHT:CAPS"></a>CAIRO_HINT_STYLE_SLIGHT</p></td>
<td class="enum_member_description">
<p>Hint outlines slightly to improve
contrast while retaining good fidelity to the original
shapes, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-HINT-STYLE-MEDIUM:CAPS"></a>CAIRO_HINT_STYLE_MEDIUM</p></td>
<td class="enum_member_description">
<p>Hint outlines with medium strength
giving a compromise between fidelity to the original shapes
and contrast, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-HINT-STYLE-FULL:CAPS"></a>CAIRO_HINT_STYLE_FULL</p></td>
<td class="enum_member_description">
<p>Hint outlines to maximize contrast, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-hint-metrics-t"></a><h3>enum cairo_hint_metrics_t</h3>
<p>Specifies whether to hint font metrics; hinting font metrics
means quantizing them so that they are integer values in
device space. Doing this improves the consistency of
letter and line spacing, however it also means that text
will be laid out differently at different zoom factors.</p>
<div class="refsect3">
<a name="cairo-hint-metrics-t.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-HINT-METRICS-DEFAULT:CAPS"></a>CAIRO_HINT_METRICS_DEFAULT</p></td>
<td class="enum_member_description">
<p>Hint metrics in the default
manner for the font backend and target device, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-HINT-METRICS-OFF:CAPS"></a>CAIRO_HINT_METRICS_OFF</p></td>
<td class="enum_member_description">
<p>Do not hint font metrics, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-HINT-METRICS-ON:CAPS"></a>CAIRO_HINT_METRICS_ON</p></td>
<td class="enum_member_description">
<p>Hint font metrics, since 1.0</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.0</p>
</div>
</div>
<div class="refsect1">
<a name="cairo-cairo-font-options-t.see-also"></a><h2>See Also</h2>
<p><a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-t" title="cairo_scaled_font_t"><span class="type">cairo_scaled_font_t</span></a></p>
</div>
</div>
<div class="footer">
<hr>Generated by GTK-Doc V1.27</div>
</body>
</html>
|
