summaryrefslogtreecommitdiff
path: root/src/fontcache.cpp
blob: 616c54a9efac055ec807c9e4fb9569bd38ee158f (plain)
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
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
/* $Id$ */

/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file fontcache.cpp Cache for characters from fonts. */

#include "stdafx.h"
#include "fontcache.h"
#include "blitter/factory.hpp"
#include "core/math_func.hpp"

#include "table/sprites.h"
#include "table/control_codes.h"

static const int ASCII_LETTERSTART = 32; ///< First printable ASCII letter.

/** Semi-constant for the height of the different sizes of fonts. */
int _font_height[FS_END];

#ifdef WITH_FREETYPE
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H

#ifdef WITH_FONTCONFIG
#include <fontconfig/fontconfig.h>
#endif

static FT_Library _library = NULL;
static FT_Face _face_small = NULL;
static FT_Face _face_medium = NULL;
static FT_Face _face_large = NULL;
static int _ascender[FS_END];

FreeTypeSettings _freetype;

static const byte FACE_COLOUR   = 1;
static const byte SHADOW_COLOUR = 2;

/**
 * Get the font loaded into a Freetype face by using a font-name.
 * If no appropiate font is found, the function returns an error
 */

/* ========================================================================================
 * Windows support
 * ======================================================================================== */

#ifdef WIN32
#include <windows.h>
#include <shlobj.h> /* SHGetFolderPath */
#include "os/windows/win32.h"

/**
 * Get the short DOS 8.3 format for paths.
 * FreeType doesn't support Unicode filenames and Windows' fopen (as used
 * by FreeType) doesn't support UTF-8 filenames. So we have to convert the
 * filename into something that isn't UTF-8 but represents the Unicode file
 * name. This is the short DOS 8.3 format. This does not contain any
 * characters that fopen doesn't support.
 * @param long_path the path in UTF-8.
 * @return the short path in ANSI (ASCII).
 */
char *GetShortPath(const char *long_path)
{
	static char short_path[MAX_PATH];
#ifdef UNICODE
	/* The non-unicode GetShortPath doesn't support UTF-8...,
	 * so convert the path to wide chars, then get the short
	 * path and convert it back again. */
	wchar_t long_path_w[MAX_PATH];
	MultiByteToWideChar(CP_UTF8, 0, long_path, -1, long_path_w, MAX_PATH);

	wchar_t short_path_w[MAX_PATH];
	GetShortPathNameW(long_path_w, short_path_w, MAX_PATH);

	WideCharToMultiByte(CP_ACP, 0, short_path_w, -1, short_path, MAX_PATH, NULL, NULL);
#else
	/* Technically not needed, but do it for consistency. */
	GetShortPathNameA(long_path, short_path, MAX_PATH);
#endif
	return short_path;
}

/* Get the font file to be loaded into Freetype by looping the registry
 * location where windows lists all installed fonts. Not very nice, will
 * surely break if the registry path changes, but it works. Much better
 * solution would be to use CreateFont, and extract the font data from it
 * by GetFontData. The problem with this is that the font file needs to be
 * kept in memory then until the font is no longer needed. This could mean
 * an additional memory usage of 30MB (just for fonts!) when using an eastern
 * font for all font sizes */
#define FONT_DIR_NT "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Fonts"
#define FONT_DIR_9X "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Fonts"
static FT_Error GetFontByFaceName(const char *font_name, FT_Face *face)
{
	FT_Error err = FT_Err_Cannot_Open_Resource;
	HKEY hKey;
	LONG ret;
	TCHAR vbuffer[MAX_PATH], dbuffer[256];
	TCHAR *font_namep;
	char *font_path;
	uint index;

	/* On windows NT (2000, NT3.5, XP, etc.) the fonts are stored in the
	 * "Windows NT" key, on Windows 9x in the Windows key. To save us having
	 * to retrieve the windows version, we'll just query both */
	ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T(FONT_DIR_NT), 0, KEY_READ, &hKey);
	if (ret != ERROR_SUCCESS) ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T(FONT_DIR_9X), 0, KEY_READ, &hKey);

	if (ret != ERROR_SUCCESS) {
		DEBUG(freetype, 0, "Cannot open registry key HKLM\\SOFTWARE\\Microsoft\\Windows (NT)\\CurrentVersion\\Fonts");
		return err;
	}

	/* For Unicode we need some conversion between widechar and
	 * normal char to match the data returned by RegEnumValue,
	 * otherwise just use parameter */
#if defined(UNICODE)
	font_namep = MallocT<TCHAR>(MAX_PATH);
	MB_TO_WIDE_BUFFER(font_name, font_namep, MAX_PATH * sizeof(TCHAR));
#else
	font_namep = const_cast<char *>(font_name); // only cast because in unicode pointer is not const
#endif

	for (index = 0;; index++) {
		TCHAR *s;
		DWORD vbuflen = lengthof(vbuffer);
		DWORD dbuflen = lengthof(dbuffer);

		ret = RegEnumValue(hKey, index, vbuffer, &vbuflen, NULL, NULL, (byte*)dbuffer, &dbuflen);
		if (ret != ERROR_SUCCESS) goto registry_no_font_found;

		/* The font names in the registry are of the following 3 forms:
		 * - ADMUI3.fon
		 * - Book Antiqua Bold (TrueType)
		 * - Batang & BatangChe & Gungsuh & GungsuhChe (TrueType)
		 * We will strip the font-type '()' if any and work with the font name
		 * itself, which must match exactly; if...
		 * TTC files, font files which contain more than one font are seperated
		 * byt '&'. Our best bet will be to do substr match for the fontname
		 * and then let FreeType figure out which index to load */
		s = _tcschr(vbuffer, _T('('));
		if (s != NULL) s[-1] = '\0';

		if (_tcschr(vbuffer, _T('&')) == NULL) {
			if (_tcsicmp(vbuffer, font_namep) == 0) break;
		} else {
			if (_tcsstr(vbuffer, font_namep) != NULL) break;
		}
	}

	if (!SUCCEEDED(SHGetFolderPath(NULL, CSIDL_FONTS, NULL, SHGFP_TYPE_CURRENT, vbuffer))) {
		DEBUG(freetype, 0, "SHGetFolderPath cannot return fonts directory");
		goto folder_error;
	}

	/* Some fonts are contained in .ttc files, TrueType Collection fonts. These
	 * contain multiple fonts inside this single file. GetFontData however
	 * returns the whole file, so we need to check each font inside to get the
	 * proper font.
	 * Also note that FreeType does not support UNICODE filesnames! */
#if defined(UNICODE)
	/* We need a cast here back from wide because FreeType doesn't support
	 * widechar filenames. Just use the buffer we allocated before for the
	 * font_name search */
	font_path = (char*)font_namep;
	WIDE_TO_MB_BUFFER(vbuffer, font_path, MAX_PATH * sizeof(TCHAR));
#else
	font_path = vbuffer;
#endif

	ttd_strlcat(font_path, "\\", MAX_PATH * sizeof(TCHAR));
	ttd_strlcat(font_path, WIDE_TO_MB(dbuffer), MAX_PATH * sizeof(TCHAR));

	/* Convert the path into something that FreeType understands */
	font_path = GetShortPath(font_path);

	index = 0;
	do {
		err = FT_New_Face(_library, font_path, index, face);
		if (err != FT_Err_Ok) break;

		if (strncasecmp(font_name, (*face)->family_name, strlen((*face)->family_name)) == 0) break;
		/* Try english name if font name failed */
		if (strncasecmp(font_name + strlen(font_name) + 1, (*face)->family_name, strlen((*face)->family_name)) == 0) break;
		err = FT_Err_Cannot_Open_Resource;

	} while ((FT_Long)++index != (*face)->num_faces);


folder_error:
registry_no_font_found:
#if defined(UNICODE)
	free(font_namep);
#endif
	RegCloseKey(hKey);
	return err;
}

/**
 * Fonts can have localised names and when the system locale is the same as
 * one of those localised names Windows will always return that localised name
 * instead of allowing to get the non-localised (English US) name of the font.
 * This will later on give problems as freetype uses the non-localised name of
 * the font and we need to compare based on that name.
 * Windows furthermore DOES NOT have an API to get the non-localised name nor
 * can we override the system locale. This means that we have to actually read
 * the font itself to gather the font name we want.
 * Based on: http://blogs.msdn.com/michkap/archive/2006/02/13/530814.aspx
 * @param logfont the font information to get the english name of.
 * @return the English name (if it could be found).
 */
static const char *GetEnglishFontName(const ENUMLOGFONTEX *logfont)
{
	static char font_name[MAX_PATH];
	const char *ret_font_name = NULL;
	uint pos = 0;
	HDC dc;
	HGDIOBJ oldfont;
	byte *buf;
	DWORD dw;
	uint16 format, count, stringOffset, platformId, encodingId, languageId, nameId, length, offset;

	HFONT font = CreateFontIndirect(&logfont->elfLogFont);
	if (font == NULL) goto err1;

	dc = GetDC(NULL);
	oldfont = SelectObject(dc, font);
	dw = GetFontData(dc, 'eman', 0, NULL, 0);
	if (dw == GDI_ERROR) goto err2;

	buf = MallocT<byte>(dw);
	dw = GetFontData(dc, 'eman', 0, buf, dw);
	if (dw == GDI_ERROR) goto err3;

	format = buf[pos++] << 8;
	format += buf[pos++];
	assert(format == 0);
	count = buf[pos++] << 8;
	count += buf[pos++];
	stringOffset = buf[pos++] << 8;
	stringOffset += buf[pos++];
	for (uint i = 0; i < count; i++) {
		platformId = buf[pos++] << 8;
		platformId += buf[pos++];
		encodingId = buf[pos++] << 8;
		encodingId += buf[pos++];
		languageId = buf[pos++] << 8;
		languageId += buf[pos++];
		nameId = buf[pos++] << 8;
		nameId += buf[pos++];
		if (nameId != 1) {
			pos += 4; // skip length and offset
			continue;
		}
		length = buf[pos++] << 8;
		length += buf[pos++];
		offset = buf[pos++] << 8;
		offset += buf[pos++];

		/* Don't buffer overflow */
		length = min(length, MAX_PATH - 1);
		for (uint j = 0; j < length; j++) font_name[j] = buf[stringOffset + offset + j];
		font_name[length] = '\0';

		if ((platformId == 1 && languageId == 0) ||      // Macintosh English
				(platformId == 3 && languageId == 0x0409)) { // Microsoft English (US)
			ret_font_name = font_name;
			break;
		}
	}

err3:
	free(buf);
err2:
	SelectObject(dc, oldfont);
	ReleaseDC(NULL, dc);
	DeleteObject(font);
err1:
	return ret_font_name == NULL ? WIDE_TO_MB((const TCHAR*)logfont->elfFullName) : ret_font_name;
}

struct EFCParam {
	FreeTypeSettings *settings;
	LOCALESIGNATURE  locale;
	SetFallbackFontCallback *callback;
};

static int CALLBACK EnumFontCallback(const ENUMLOGFONTEX *logfont, const NEWTEXTMETRICEX *metric, DWORD type, LPARAM lParam)
{
	EFCParam *info = (EFCParam *)lParam;

	/* Only use TrueType fonts */
	if (!(type & TRUETYPE_FONTTYPE)) return 1;
	/* Don't use SYMBOL fonts */
	if (logfont->elfLogFont.lfCharSet == SYMBOL_CHARSET) return 1;

	/* The font has to have at least one of the supported locales to be usable. */
	if ((metric->ntmFontSig.fsCsb[0] & info->locale.lsCsbSupported[0]) == 0 && (metric->ntmFontSig.fsCsb[1] & info->locale.lsCsbSupported[1]) == 0) {
		/* On win9x metric->ntmFontSig seems to contain garbage. */
		FONTSIGNATURE fs;
		memset(&fs, 0, sizeof(fs));
		HFONT font = CreateFontIndirect(&logfont->elfLogFont);
		if (font != NULL) {
			HDC dc = GetDC(NULL);
			HGDIOBJ oldfont = SelectObject(dc, font);
			GetTextCharsetInfo(dc, &fs, 0);
			SelectObject(dc, oldfont);
			ReleaseDC(NULL, dc);
			DeleteObject(font);
		}
		if ((fs.fsCsb[0] & info->locale.lsCsbSupported[0]) == 0 && (fs.fsCsb[1] & info->locale.lsCsbSupported[1]) == 0) return 1;
	}

	char font_name[MAX_PATH];
#if defined(UNICODE)
	WIDE_TO_MB_BUFFER((const TCHAR*)logfont->elfFullName, font_name, lengthof(font_name));
#else
	strecpy(font_name, (const TCHAR*)logfont->elfFullName, lastof(font_name));
#endif

	/* Add english name after font name */
	const char *english_name = GetEnglishFontName(logfont);
	strecpy(font_name + strlen(font_name) + 1, english_name, lastof(font_name));

	/* Check whether we can actually load the font. */
	bool ft_init = _library != NULL;
	bool found = false;
	FT_Face face;
	/* Init FreeType if needed. */
	if ((ft_init || FT_Init_FreeType(&_library) == FT_Err_Ok) && GetFontByFaceName(font_name, &face) == FT_Err_Ok) {
		FT_Done_Face(face);
		found = true;
	}
	if (!ft_init) {
		/* Uninit FreeType if we did the init. */
		FT_Done_FreeType(_library);
		_library = NULL;
	}

	if (!found) return 1;

	strecpy(info->settings->small_font,  font_name, lastof(info->settings->small_font));
	strecpy(info->settings->medium_font, font_name, lastof(info->settings->medium_font));
	strecpy(info->settings->large_font,  font_name, lastof(info->settings->large_font));
	if (info->callback(NULL)) return 1;
	DEBUG(freetype, 1, "Fallback font: %s (%s)", font_name, english_name);
	return 0; // stop enumerating
}

bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, SetFallbackFontCallback *callback)
{
	DEBUG(freetype, 1, "Trying fallback fonts");
	EFCParam langInfo;
	if (GetLocaleInfo(MAKELCID(winlangid, SORT_DEFAULT), LOCALE_FONTSIGNATURE, (LPTSTR)&langInfo.locale, sizeof(langInfo.locale) / sizeof(TCHAR)) == 0) {
		/* Invalid langid or some other mysterious error, can't determine fallback font. */
		DEBUG(freetype, 1, "Can't get locale info for fallback font (langid=0x%x)", winlangid);
		return false;
	}
	langInfo.settings = settings;
	langInfo.callback = callback;

	LOGFONT font;
	/* Enumerate all fonts. */
	font.lfCharSet = DEFAULT_CHARSET;
	font.lfFaceName[0] = '\0';
	font.lfPitchAndFamily = 0;

	HDC dc = GetDC(NULL);
	int ret = EnumFontFamiliesEx(dc, &font, (FONTENUMPROC)&EnumFontCallback, (LPARAM)&langInfo, 0);
	ReleaseDC(NULL, dc);
	return ret == 0;
}

#elif defined(__APPLE__) /* end ifdef Win32 */
/* ========================================================================================
 * OSX support
 * ======================================================================================== */

#include "os/macosx/macos.h"
#include <ApplicationServices/ApplicationServices.h>

FT_Error GetFontByFaceName(const char *font_name, FT_Face *face)
{
	FT_Error err = FT_Err_Cannot_Open_Resource;

	/* Get font reference from name. */
	CFStringRef name = CFStringCreateWithCString(kCFAllocatorDefault, font_name, kCFStringEncodingUTF8);
	ATSFontRef font = ATSFontFindFromName(name, kATSOptionFlagsDefault);
	CFRelease(name);
	if (font == kInvalidFont) return err;

	/* Get a file system reference for the font. */
	FSRef ref;
	OSStatus os_err = -1;
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
	if (MacOSVersionIsAtLeast(10, 5, 0)) {
		os_err = ATSFontGetFileReference(font, &ref);
	} else
#endif
	{
#if (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5) && !__LP64__
		/* This type was introduced with the 10.5 SDK. */
#if (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5)
	#define ATSFSSpec FSSpec
#endif
		FSSpec spec;
		os_err = ATSFontGetFileSpecification(font, (ATSFSSpec *)&spec);
		if (os_err == noErr) os_err = FSpMakeFSRef(&spec, &ref);
#endif
	}

	if (os_err == noErr) {
		/* Get unix path for file. */
		UInt8 file_path[PATH_MAX];
		if (FSRefMakePath(&ref, file_path, sizeof(file_path)) == noErr) {
			DEBUG(freetype, 3, "Font path for %s: %s", font_name, file_path);
			err = FT_New_Face(_library, (const char *)file_path, 0, face);
		}
	}

	return err;
}

bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, SetFallbackFontCallback *callback)
{
	const char *str;
	bool result = false;

	callback(&str);

#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
	if (MacOSVersionIsAtLeast(10, 5, 0)) {
		/* Determine fallback font using CoreText. This uses the language isocode
		 * to find a suitable font. CoreText is available from 10.5 onwards. */
		char lang[16];
		if (strcmp(language_isocode, "zh_TW") == 0) {
			/* Traditional Chinese */
			strecpy(lang, "zh-Hant", lastof(lang));
		} else if (strcmp(language_isocode, "zh_CN") == 0) {
			/* Simplified Chinese */
			strecpy(lang, "zh-Hans", lastof(lang));
		} else if (strncmp(language_isocode, "ur", 2) == 0) {
			/* The urdu alphabet is variant of persian. As OS X has no default
			 * font that advertises an urdu language code, search for persian
			 * support instead. */
			strecpy(lang, "fa", lastof(lang));
		} else {
			/* Just copy the first part of the isocode. */
			strecpy(lang, language_isocode, lastof(lang));
			char *sep = strchr(lang, '_');
			if (sep != NULL) *sep = '\0';
		}

		CFStringRef lang_code;
		lang_code = CFStringCreateWithCString(kCFAllocatorDefault, lang, kCFStringEncodingUTF8);

		/* Create a font iterator and iterate over all fonts that
		 * are available to the application. */
		ATSFontIterator itr;
		ATSFontRef font;
		ATSFontIteratorCreate(kATSFontContextLocal, NULL, NULL, kATSOptionFlagsUnRestrictedScope, &itr);
		while (!result && ATSFontIteratorNext(itr, &font) == noErr) {
			/* Get CoreText font handle. */
			CTFontRef font_ref = CTFontCreateWithPlatformFont(font, 0.0, NULL, NULL);
			CFArrayRef langs = CTFontCopySupportedLanguages(font_ref);
			if (langs != NULL) {
				/* Font has a list of supported languages. */
				for (CFIndex i = 0; i < CFArrayGetCount(langs); i++) {
					CFStringRef lang = (CFStringRef)CFArrayGetValueAtIndex(langs, i);
					if (CFStringCompare(lang, lang_code, kCFCompareAnchored) == kCFCompareEqualTo) {
						/* Lang code is supported by font, get full font name. */
						CFStringRef font_name = CTFontCopyFullName(font_ref);
						char name[128];
						CFStringGetCString(font_name, name, lengthof(name), kCFStringEncodingUTF8);
						CFRelease(font_name);
						/* Skip some inappropriate or ugly looking fonts that have better alternatives. */
						if (strncmp(name, "Courier", 7) == 0 || strncmp(name, "Apple Symbols", 13) == 0 ||
								strncmp(name, ".Aqua", 5) == 0 || strncmp(name, "LastResort", 10) == 0 ||
								strncmp(name, "GB18030 Bitmap", 14) == 0) continue;

						/* Save result. */
						strecpy(settings->small_font,  name, lastof(settings->small_font));
						strecpy(settings->medium_font, name, lastof(settings->medium_font));
						strecpy(settings->large_font,  name, lastof(settings->large_font));
						DEBUG(freetype, 2, "CT-Font for %s: %s", language_isocode, name);
						result = true;
						break;
					}
				}
				CFRelease(langs);
			}
			CFRelease(font_ref);
		}
		ATSFontIteratorRelease(&itr);
		CFRelease(lang_code);
	} else
#endif
	{
#if (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5) && !__LP64__
		/* Determine fallback font using ATSUI. This uses a string sample with
		 * missing characters. This is not failure-proof, but a better way like
		 * using the isocode as in the CoreText code path is not available.
		 * ATSUI was deprecated with 10.6 and is only partially available in
		 * 64-bit mode. */

		/* Remove all control characters in the range from SCC_CONTROL_START to
		 * SCC_CONTROL_END as well as all ASCII < 0x20 from the string as it will
		 * mess with the automatic font detection */
		char buff[256]; // This length is enough to find a suitable replacement font
		strecpy(buff, str, lastof(buff));
		str_validate(buff, lastof(buff), true, false);

		/* Extract a UniChar represenation of the sample string. */
		CFStringRef cf_str = CFStringCreateWithCString(kCFAllocatorDefault, buff, kCFStringEncodingUTF8);
		if (cf_str == NULL) {
			/* Something went wrong. Corrupt/invalid sample string? */
			return false;
		}
		CFIndex str_len = CFStringGetLength(cf_str);
		UniChar string[str_len];
		CFStringGetCharacters(cf_str, CFRangeMake(0, str_len), string);

		/* Create a default text style with the default font. */
		ATSUStyle style;
		ATSUCreateStyle(&style);

		/* Create a text layout object from the sample string using the text style. */
		UniCharCount run_len = kATSUToTextEnd;
		ATSUTextLayout text_layout;
		ATSUCreateTextLayoutWithTextPtr(string, kATSUFromTextBeginning, kATSUToTextEnd, str_len, 1, &run_len, &style, &text_layout);

		/* Try to match a font for the sample text. ATSUMatchFontsToText stops after
		 * it finds the first continous character run not renderable with the currently
		 * selected font starting at offset. The matching needs to be repeated until
		 * the end of the string is reached to make sure the fallback font matches for
		 * all characters in the string and not only the first run. */
		UniCharArrayOffset offset = kATSUFromTextBeginning;
		OSStatus os_err;
		do {
			ATSUFontID font;
			UniCharCount run_len;
			os_err = ATSUMatchFontsToText(text_layout, offset, kATSUToTextEnd, &font, &offset, &run_len);
			if (os_err == kATSUFontsMatched) {
				/* Found a better fallback font. Update the text layout
				 * object with the new font. */
				ATSUAttributeTag tag = kATSUFontTag;
				ByteCount size = sizeof(font);
				ATSUAttributeValuePtr val = &font;
				ATSUSetAttributes(style, 1, &tag, &size, &val);
				offset += run_len;
			}
			/* Exit if the end of the string is reached or some other error occurred. */
		} while (os_err == kATSUFontsMatched && offset < (UniCharArrayOffset)str_len);

		if (os_err == noErr || os_err == kATSUFontsMatched) {
			/* ATSUMatchFontsToText exited normally. Extract font
			 * out of the text layout object. */
			ATSUFontID font;
			ByteCount act_len;
			ATSUGetAttribute(style, kATSUFontTag, sizeof(font), &font, &act_len);

			/* Get unique font name. The result is not a c-string, we have
			 * to leave space for a \0 and terminate it ourselves. */
			char name[128];
			ATSUFindFontName(font, kFontUniqueName, kFontNoPlatformCode, kFontNoScriptCode, kFontNoLanguageCode, 127, name, &act_len, NULL);
			name[act_len > 127 ? 127 : act_len] = '\0';

			/* Save Result. */
			strecpy(settings->small_font,  name, lastof(settings->small_font));
			strecpy(settings->medium_font, name, lastof(settings->medium_font));
			strecpy(settings->large_font,  name, lastof(settings->large_font));
			DEBUG(freetype, 2, "ATSUI-Font for %s: %s", language_isocode, name);
			result = true;
		}

		ATSUDisposeTextLayout(text_layout);
		ATSUDisposeStyle(style);
		CFRelease(cf_str);
#endif
	}

	if (result && strncmp(settings->medium_font, "Geeza Pro", 9) == 0) {
		/* The font 'Geeza Pro' is often found for arabic characters, but
		 * it has the 'tiny' problem of not having any latin characters.
		 * 'Arial Unicode MS' on the other hand has arabic and latin glyphs,
		 * but seems to 'forget' to inform the OS about this fact. Manually
		 * substitute the latter for the former if it is loadable. */
		bool ft_init = _library != NULL;
		FT_Face face;
		/* Init FreeType if needed. */
		if ((ft_init || FT_Init_FreeType(&_library) == FT_Err_Ok) && GetFontByFaceName("Arial Unicode MS", &face) == FT_Err_Ok) {
			FT_Done_Face(face);
			strecpy(settings->small_font,  "Arial Unicode MS", lastof(settings->small_font));
			strecpy(settings->medium_font, "Arial Unicode MS", lastof(settings->medium_font));
			strecpy(settings->large_font,  "Arial Unicode MS", lastof(settings->large_font));
			DEBUG(freetype, 1, "Replacing font 'Geeza Pro' with 'Arial Unicode MS'");
		}
		if (!ft_init) {
			/* Uninit FreeType if we did the init. */
			FT_Done_FreeType(_library);
			_library = NULL;
		}
	 }

	callback(NULL);
	return result;
}

#elif defined(WITH_FONTCONFIG) /* end ifdef __APPLE__ */
/* ========================================================================================
 * FontConfig (unix) support
 * ======================================================================================== */
static FT_Error GetFontByFaceName(const char *font_name, FT_Face *face)
{
	FT_Error err = FT_Err_Cannot_Open_Resource;

	if (!FcInit()) {
		ShowInfoF("Unable to load font configuration");
	} else {
		FcPattern *match;
		FcPattern *pat;
		FcFontSet *fs;
		FcResult  result;
		char *font_style;
		char *font_family;

		/* Split & strip the font's style */
		font_family = strdup(font_name);
		font_style = strchr(font_family, ',');
		if (font_style != NULL) {
			font_style[0] = '\0';
			font_style++;
			while (*font_style == ' ' || *font_style == '\t') font_style++;
		}

		/* Resolve the name and populate the information structure */
		pat = FcNameParse((FcChar8*)font_family);
		if (font_style != NULL) FcPatternAddString(pat, FC_STYLE, (FcChar8*)font_style);
		FcConfigSubstitute(0, pat, FcMatchPattern);
		FcDefaultSubstitute(pat);
		fs = FcFontSetCreate();
		match = FcFontMatch(0, pat, &result);

		if (fs != NULL && match != NULL) {
			int i;
			FcChar8 *family;
			FcChar8 *style;
			FcChar8 *file;
			FcFontSetAdd(fs, match);

			for (i = 0; err != FT_Err_Ok && i < fs->nfont; i++) {
				/* Try the new filename */
				if (FcPatternGetString(fs->fonts[i], FC_FILE,   0, &file)   == FcResultMatch &&
						FcPatternGetString(fs->fonts[i], FC_FAMILY, 0, &family) == FcResultMatch &&
						FcPatternGetString(fs->fonts[i], FC_STYLE,  0, &style)  == FcResultMatch) {

					/* The correct style? */
					if (font_style != NULL && strcasecmp(font_style, (char*)style) != 0) continue;

					/* Font config takes the best shot, which, if the family name is spelled
					 * wrongly a 'random' font, so check whether the family name is the
					 * same as the supplied name */
					if (strcasecmp(font_family, (char*)family) == 0) {
						err = FT_New_Face(_library, (char *)file, 0, face);
					}
				}
			}
		}

		free(font_family);
		FcPatternDestroy(pat);
		FcFontSetDestroy(fs);
		FcFini();
	}

	return err;
}

bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, SetFallbackFontCallback *callback)
{
	if (!FcInit()) return false;

	bool ret = false;

	/* Fontconfig doesn't handle full language isocodes, only the part
	 * before the _ of e.g. en_GB is used, so "remove" everything after
	 * the _. */
	char lang[16];
	seprintf(lang, lastof(lang), ":lang=%s", language_isocode);
	char *split = strchr(lang, '_');
	if (split != NULL) *split = '\0';

	/* First create a pattern to match the wanted language. */
	FcPattern *pat = FcNameParse((FcChar8*)lang);
	/* We only want to know the filename. */
	FcObjectSet *os = FcObjectSetBuild(FC_FILE, NULL);
	/* Get the list of filenames matching the wanted language. */
	FcFontSet *fs = FcFontList(NULL, pat, os);

	/* We don't need these anymore. */
	FcObjectSetDestroy(os);
	FcPatternDestroy(pat);

	if (fs != NULL) {
		for (int i = 0; i < fs->nfont; i++) {
			FcPattern *font = fs->fonts[i];

			FcChar8 *file = NULL;
			FcResult res = FcPatternGetString(font, FC_FILE, 0, &file);
			if (res != FcResultMatch || file == NULL) {
				continue;
			}

			strecpy(settings->small_font,  (const char*)file, lastof(settings->small_font));
			strecpy(settings->medium_font, (const char*)file, lastof(settings->medium_font));
			strecpy(settings->large_font,  (const char*)file, lastof(settings->large_font));

			bool missing = callback(NULL);
			DEBUG(freetype, 1, "Font \"%s\" misses%s glyphs", file, missing ? "" : " no");

			if (!missing) {
				ret = true;
				break;
			}
		}

		/* Clean up the list of filenames. */
		FcFontSetDestroy(fs);
	}

	FcFini();
	return ret;
}

#else /* without WITH_FONTCONFIG */
FT_Error GetFontByFaceName(const char *font_name, FT_Face *face) {return FT_Err_Cannot_Open_Resource;}
bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, SetFallbackFontCallback *callback) { return false; }
#endif /* WITH_FONTCONFIG */

static void SetFontGeometry(FT_Face face, FontSize size, int pixels)
{
	FT_Set_Pixel_Sizes(face, 0, pixels);

	if (FT_IS_SCALABLE(face)) {
		int asc = face->ascender * pixels / face->units_per_EM;
		int dec = face->descender * pixels / face->units_per_EM;

		_ascender[size] = asc;
		_font_height[size] = asc - dec;
	} else {
		_ascender[size] = pixels;
		_font_height[size] = pixels;
	}
}

/**
 * Loads the freetype font.
 * First type to load the fontname as if it were a path. If that fails,
 * try to resolve the filename of the font using fontconfig, where the
 * format is 'font family name' or 'font family name, font style'.
 */
static void LoadFreeTypeFont(const char *font_name, FT_Face *face, const char *type)
{
	FT_Error error;

	if (StrEmpty(font_name)) return;

	error = FT_New_Face(_library, font_name, 0, face);

	if (error != FT_Err_Ok) error = GetFontByFaceName(font_name, face);

	if (error == FT_Err_Ok) {
		DEBUG(freetype, 2, "Requested '%s', using '%s %s'", font_name, (*face)->family_name, (*face)->style_name);

		/* Attempt to select the unicode character map */
		error = FT_Select_Charmap(*face, ft_encoding_unicode);
		if (error == FT_Err_Ok) return; // Success

		if (error == FT_Err_Invalid_CharMap_Handle) {
			/* Try to pick a different character map instead. We default to
			 * the first map, but platform_id 0 encoding_id 0 should also
			 * be unicode (strange system...) */
			FT_CharMap found = (*face)->charmaps[0];
			int i;

			for (i = 0; i < (*face)->num_charmaps; i++) {
				FT_CharMap charmap = (*face)->charmaps[i];
				if (charmap->platform_id == 0 && charmap->encoding_id == 0) {
					found = charmap;
				}
			}

			if (found != NULL) {
				error = FT_Set_Charmap(*face, found);
				if (error == FT_Err_Ok) return;
			}
		}
	}

	FT_Done_Face(*face);
	*face = NULL;

	ShowInfoF("Unable to use '%s' for %s font, FreeType reported error 0x%X, using sprite font instead", font_name, type, error);
}


void InitFreeType()
{
	ResetFontSizes();

	if (StrEmpty(_freetype.small_font) && StrEmpty(_freetype.medium_font) && StrEmpty(_freetype.large_font)) {
		DEBUG(freetype, 1, "No font faces specified, using sprite fonts instead");
		return;
	}

	if (FT_Init_FreeType(&_library) != FT_Err_Ok) {
		ShowInfoF("Unable to initialize FreeType, using sprite fonts instead");
		return;
	}

	DEBUG(freetype, 2, "Initialized");

	/* Load each font */
	LoadFreeTypeFont(_freetype.small_font,  &_face_small,  "small");
	LoadFreeTypeFont(_freetype.medium_font, &_face_medium, "medium");
	LoadFreeTypeFont(_freetype.large_font,  &_face_large,  "large");

	/* Set each font size */
	if (_face_small != NULL) {
		SetFontGeometry(_face_small, FS_SMALL, _freetype.small_size);
	}
	if (_face_medium != NULL) {
		SetFontGeometry(_face_medium, FS_NORMAL, _freetype.medium_size);
	}
	if (_face_large != NULL) {
		SetFontGeometry(_face_large, FS_LARGE, _freetype.large_size);
	}
}

static void ResetGlyphCache();

/**
 * Unload a face and set it to NULL.
 * @param face the face to unload
 */
static void UnloadFace(FT_Face *face)
{
	if (*face == NULL) return;

	FT_Done_Face(*face);
	*face = NULL;
}

/**
 * Free everything allocated w.r.t. fonts.
 */
void UninitFreeType()
{
	ResetFontSizes();
	ResetGlyphCache();

	UnloadFace(&_face_small);
	UnloadFace(&_face_medium);
	UnloadFace(&_face_large);

	FT_Done_FreeType(_library);
	_library = NULL;
}


static FT_Face GetFontFace(FontSize size)
{
	switch (size) {
		default: NOT_REACHED();
		case FS_NORMAL: return _face_medium;
		case FS_SMALL:  return _face_small;
		case FS_LARGE:  return _face_large;
	}
}


struct GlyphEntry {
	Sprite *sprite;
	byte width;
	bool duplicate;
};


/* The glyph cache. This is structured to reduce memory consumption.
 * 1) There is a 'segment' table for each font size.
 * 2) Each segment table is a discrete block of characters.
 * 3) Each block contains 256 (aligned) characters sequential characters.
 *
 * The cache is accessed in the following way:
 * For character 0x0041  ('A'): _glyph_ptr[FS_NORMAL][0x00][0x41]
 * For character 0x20AC (Euro): _glyph_ptr[FS_NORMAL][0x20][0xAC]
 *
 * Currently only 256 segments are allocated, "limiting" us to 65536 characters.
 * This can be simply changed in the two functions Get & SetGlyphPtr.
 */
static GlyphEntry **_glyph_ptr[FS_END];

/** Clear the complete cache */
static void ResetGlyphCache()
{
	for (FontSize i = FS_BEGIN; i < FS_END; i++) {
		if (_glyph_ptr[i] == NULL) continue;

		for (int j = 0; j < 256; j++) {
			if (_glyph_ptr[i][j] == NULL) continue;

			for (int k = 0; k < 256; k++) {
				if (_glyph_ptr[i][j][k].duplicate) continue;
				free(_glyph_ptr[i][j][k].sprite);
			}

			free(_glyph_ptr[i][j]);
		}

		free(_glyph_ptr[i]);
		_glyph_ptr[i] = NULL;
	}
}

static GlyphEntry *GetGlyphPtr(FontSize size, WChar key)
{
	if (_glyph_ptr[size] == NULL) return NULL;
	if (_glyph_ptr[size][GB(key, 8, 8)] == NULL) return NULL;
	return &_glyph_ptr[size][GB(key, 8, 8)][GB(key, 0, 8)];
}


static void SetGlyphPtr(FontSize size, WChar key, const GlyphEntry *glyph, bool duplicate = false)
{
	if (_glyph_ptr[size] == NULL) {
		DEBUG(freetype, 3, "Allocating root glyph cache for size %u", size);
		_glyph_ptr[size] = CallocT<GlyphEntry*>(256);
	}

	if (_glyph_ptr[size][GB(key, 8, 8)] == NULL) {
		DEBUG(freetype, 3, "Allocating glyph cache for range 0x%02X00, size %u", GB(key, 8, 8), size);
		_glyph_ptr[size][GB(key, 8, 8)] = CallocT<GlyphEntry>(256);
	}

	DEBUG(freetype, 4, "Set glyph for unicode character 0x%04X, size %u", key, size);
	_glyph_ptr[size][GB(key, 8, 8)][GB(key, 0, 8)].sprite    = glyph->sprite;
	_glyph_ptr[size][GB(key, 8, 8)][GB(key, 0, 8)].width     = glyph->width;
	_glyph_ptr[size][GB(key, 8, 8)][GB(key, 0, 8)].duplicate = duplicate;
}

static void *AllocateFont(size_t size)
{
	return MallocT<byte>(size);
}


/* Check if a glyph should be rendered with antialiasing */
static bool GetFontAAState(FontSize size)
{
	/* AA is only supported for 32 bpp */
	if (BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth() != 32) return false;

	switch (size) {
		default: NOT_REACHED();
		case FS_NORMAL: return _freetype.medium_aa;
		case FS_SMALL:  return _freetype.small_aa;
		case FS_LARGE:  return _freetype.large_aa;
	}
}


const Sprite *GetGlyph(FontSize size, WChar key)
{
	FT_Face face = GetFontFace(size);
	FT_GlyphSlot slot;
	GlyphEntry new_glyph;
	GlyphEntry *glyph;
	SpriteLoader::Sprite sprite;
	int width;
	int height;
	int x;
	int y;

	assert(IsPrintable(key));

	/* Bail out if no face loaded, or for our special characters */
	if (face == NULL || (key >= SCC_SPRITE_START && key <= SCC_SPRITE_END)) {
		SpriteID sprite = GetUnicodeGlyph(size, key);
		if (sprite == 0) sprite = GetUnicodeGlyph(size, '?');
		return GetSprite(sprite, ST_FONT);
	}

	/* Check for the glyph in our cache */
	glyph = GetGlyphPtr(size, key);
	if (glyph != NULL && glyph->sprite != NULL) return glyph->sprite;

	slot = face->glyph;

	bool aa = GetFontAAState(size);

	FT_UInt glyph_index = FT_Get_Char_Index(face, key);
	if (glyph_index == 0) {
		if (key == '?') {
			/* The font misses the '?' character. Use sprite font. */
			SpriteID sprite = GetUnicodeGlyph(size, key);
			Sprite *spr = (Sprite*)GetRawSprite(sprite, ST_FONT, AllocateFont);
			assert(spr != NULL);
			new_glyph.sprite = spr;
			new_glyph.width  = spr->width + (size != FS_NORMAL);
			SetGlyphPtr(size, key, &new_glyph, false);
			return new_glyph.sprite;
		} else {
			/* Use '?' for missing characters. */
			GetGlyph(size, '?');
			glyph = GetGlyphPtr(size, '?');
			SetGlyphPtr(size, key, glyph, true);
			return glyph->sprite;
		}
	}
	FT_Load_Glyph(face, glyph_index, FT_LOAD_DEFAULT);
	FT_Render_Glyph(face->glyph, aa ? FT_RENDER_MODE_NORMAL : FT_RENDER_MODE_MONO);

	/* Despite requesting a normal glyph, FreeType may have returned a bitmap */
	aa = (slot->bitmap.pixel_mode == FT_PIXEL_MODE_GRAY);

	/* Add 1 pixel for the shadow on the medium font. Our sprite must be at least 1x1 pixel */
	width  = max(1, slot->bitmap.width + (size == FS_NORMAL));
	height = max(1, slot->bitmap.rows  + (size == FS_NORMAL));

	/* Limit glyph size to prevent overflows later on. */
	if (width > 256 || height > 256) usererror("Font glyph is too large");

	/* FreeType has rendered the glyph, now we allocate a sprite and copy the image into it */
	sprite.AllocateData(width * height);
	sprite.width = width;
	sprite.height = height;
	sprite.x_offs = slot->bitmap_left;
	sprite.y_offs = _ascender[size] - slot->bitmap_top;

	/* Draw shadow for medium size */
	if (size == FS_NORMAL) {
		for (y = 0; y < slot->bitmap.rows; y++) {
			for (x = 0; x < slot->bitmap.width; x++) {
				if (aa ? (slot->bitmap.buffer[x + y * slot->bitmap.pitch] > 0) : HasBit(slot->bitmap.buffer[(x / 8) + y * slot->bitmap.pitch], 7 - (x % 8))) {
					sprite.data[1 + x + (1 + y) * sprite.width].m = SHADOW_COLOUR;
					sprite.data[1 + x + (1 + y) * sprite.width].a = aa ? slot->bitmap.buffer[x + y * slot->bitmap.pitch] : 0xFF;
				}
			}
		}
	}

	for (y = 0; y < slot->bitmap.rows; y++) {
		for (x = 0; x < slot->bitmap.width; x++) {
			if (aa ? (slot->bitmap.buffer[x + y * slot->bitmap.pitch] > 0) : HasBit(slot->bitmap.buffer[(x / 8) + y * slot->bitmap.pitch], 7 - (x % 8))) {
				sprite.data[x + y * sprite.width].m = FACE_COLOUR;
				sprite.data[x + y * sprite.width].a = aa ? slot->bitmap.buffer[x + y * slot->bitmap.pitch] : 0xFF;
			}
		}
	}

	new_glyph.sprite = BlitterFactoryBase::GetCurrentBlitter()->Encode(&sprite, AllocateFont);
	new_glyph.width  = slot->advance.x >> 6;

	SetGlyphPtr(size, key, &new_glyph);

	return new_glyph.sprite;
}


uint GetGlyphWidth(FontSize size, WChar key)
{
	FT_Face face = GetFontFace(size);
	GlyphEntry *glyph;

	if (face == NULL || (key >= SCC_SPRITE_START && key <= SCC_SPRITE_END)) {
		SpriteID sprite = GetUnicodeGlyph(size, key);
		if (sprite == 0) sprite = GetUnicodeGlyph(size, '?');
		return SpriteExists(sprite) ? GetSprite(sprite, ST_FONT)->width + (size != FS_NORMAL) : 0;
	}

	glyph = GetGlyphPtr(size, key);
	if (glyph == NULL || glyph->sprite == NULL) {
		GetGlyph(size, key);
		glyph = GetGlyphPtr(size, key);
	}

	return glyph->width;
}


#endif /* WITH_FREETYPE */

/** Reset the font sizes to the defaults of the sprite based fonts. */
void ResetFontSizes()
{
	_font_height[FS_SMALL]  =  6;
	_font_height[FS_NORMAL] = 10;
	_font_height[FS_LARGE]  = 18;
}

/* Sprite based glyph mapping */

#include "table/unicode.h"

static SpriteID **_unicode_glyph_map[FS_END];


/** Get the SpriteID of the first glyph for the given font size */
static SpriteID GetFontBase(FontSize size)
{
	switch (size) {
		default: NOT_REACHED();
		case FS_NORMAL: return SPR_ASCII_SPACE;
		case FS_SMALL:  return SPR_ASCII_SPACE_SMALL;
		case FS_LARGE:  return SPR_ASCII_SPACE_BIG;
	}
}


SpriteID GetUnicodeGlyph(FontSize size, uint32 key)
{
	if (_unicode_glyph_map[size][GB(key, 8, 8)] == NULL) return 0;
	return _unicode_glyph_map[size][GB(key, 8, 8)][GB(key, 0, 8)];
}


void SetUnicodeGlyph(FontSize size, uint32 key, SpriteID sprite)
{
	if (_unicode_glyph_map[size] == NULL) _unicode_glyph_map[size] = CallocT<SpriteID*>(256);
	if (_unicode_glyph_map[size][GB(key, 8, 8)] == NULL) _unicode_glyph_map[size][GB(key, 8, 8)] = CallocT<SpriteID>(256);
	_unicode_glyph_map[size][GB(key, 8, 8)][GB(key, 0, 8)] = sprite;
}


void InitializeUnicodeGlyphMap()
{
	for (FontSize size = FS_BEGIN; size != FS_END; size++) {
		/* Clear out existing glyph map if it exists */
		if (_unicode_glyph_map[size] != NULL) {
			for (uint i = 0; i < 256; i++) {
				free(_unicode_glyph_map[size][i]);
			}
			free(_unicode_glyph_map[size]);
			_unicode_glyph_map[size] = NULL;
		}

		SpriteID base = GetFontBase(size);

		for (uint i = ASCII_LETTERSTART; i < 256; i++) {
			SpriteID sprite = base + i - ASCII_LETTERSTART;
			if (!SpriteExists(sprite)) continue;
			SetUnicodeGlyph(size, i, sprite);
			SetUnicodeGlyph(size, i + SCC_SPRITE_START, sprite);
		}

		for (uint i = 0; i < lengthof(_default_unicode_map); i++) {
			byte key = _default_unicode_map[i].key;
			if (key == CLRA || key == CLRL) {
				/* Clear the glyph. This happens if the glyph at this code point
				 * is non-standard and should be accessed by an SCC_xxx enum
				 * entry only. */
				if (key == CLRA || size == FS_LARGE) {
					SetUnicodeGlyph(size, _default_unicode_map[i].code, 0);
				}
			} else {
				SpriteID sprite = base + key - ASCII_LETTERSTART;
				SetUnicodeGlyph(size, _default_unicode_map[i].code, sprite);
			}
		}
	}
}