-
Notifications
You must be signed in to change notification settings - Fork 0
/
fontutils.c
1202 lines (1076 loc) · 29.8 KB
/
fontutils.c
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
/*
* $XFree86: xc/programs/xterm/fontutils.c,v 1.16 2000/03/03 20:02:31 dawes Exp $
*/
/************************************************************
Copyright 1998-2000 by Thomas E. Dickey <dickey@clark.net>
All Rights Reserved
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name(s) of the above copyright
holders shall not be used in advertising or otherwise to promote the
sale, use or other dealings in this Software without prior written
authorization.
********************************************************/
/*
* A portion of this module (for FontNameProperties) is adapted from EMU 1.3;
* it constructs font names with specific properties changed, e.g., for bold
* and double-size characters.
*/
#include <fontutils.h>
#include <data.h>
#include <menu.h>
#include <xterm.h>
#include <stdio.h>
/* from X11/Xlibint.h - not all vendors install this file */
#define CI_NONEXISTCHAR(cs) (((cs)->width == 0) && \
(((cs)->rbearing|(cs)->lbearing| \
(cs)->ascent|(cs)->descent) == 0))
#define CI_GET_CHAR_INFO_1D(fs,col,def,cs) \
{ \
cs = def; \
if (col >= fs->min_char_or_byte2 && col <= fs->max_char_or_byte2) { \
if (fs->per_char == NULL) { \
cs = &fs->min_bounds; \
} else { \
cs = &fs->per_char[(col - fs->min_char_or_byte2)]; \
if (CI_NONEXISTCHAR(cs)) cs = def; \
} \
} \
}
#define CI_GET_CHAR_INFO_2D(fs,row,col,def,cs) \
{ \
cs = def; \
if (row >= fs->min_byte1 && row <= fs->max_byte1 && \
col >= fs->min_char_or_byte2 && col <= fs->max_char_or_byte2) { \
if (fs->per_char == NULL) { \
cs = &fs->min_bounds; \
} else { \
cs = &fs->per_char[((row - fs->min_byte1) * \
(fs->max_char_or_byte2 - \
fs->min_char_or_byte2 + 1)) + \
(col - fs->min_char_or_byte2)]; \
if (CI_NONEXISTCHAR(cs)) cs = def; \
} \
} \
}
#define MAX_FONTNAME 200
/*
* A structure to hold the relevant properties from a font
* we need to make a well formed font name for it.
*/
typedef struct {
/* registry, foundry, family */
char *beginning;
char *width;
/* slant, width, add_style */
char *middle;
int pixel_size;
char *point_size;
int res_x;
int res_y;
char *spacing;
/* charset registry, charset encoding */
char *end;
} FontNameProperties;
/*
* Returns the fields from start to stop in a dash- separated string. This
* function will modify the source, putting '\0's in the appropiate place and
* moving the beginning forward to after the '\0'
*
* This will NOT work for the last field (but we won't need it).
*/
static char *
n_fields(char **source, int start, int stop)
{
int i;
char *str , *str1;
/*
* find the start-1th dash
*/
for (i = start-1, str = *source; i; i--, str++)
if ((str = strchr(str, '-')) == 0)
return 0;
/*
* find the stopth dash
*/
for (i = stop - start + 1, str1 = str; i; i--, str1++)
if ((str1 = strchr(str1, '-')) == 0)
return 0;
/*
* put a \0 at the end of the fields
*/
*(str1 - 1) = '\0';
/*
* move source forward
*/
*source = str1;
return str;
}
/*
* Gets the font properties from a given font structure. We use the FONT name
* to find them out, since that seems easier.
*
* Returns a pointer to a static FontNameProperties structure
* or NULL on error.
*/
static FontNameProperties *
get_font_name_props(Display *dpy, XFontStruct *fs, char *result)
{
static FontNameProperties props;
static char *last_name;
register XFontProp *fp;
register int i;
Atom fontatom = XInternAtom (dpy, "FONT", False);
char *name;
char *str;
/*
* first get the full font name
*/
for (name = 0, i = 0, fp = fs->properties;
i < fs->n_properties;
i++, fp++)
if (fp->name == fontatom)
name = XGetAtomName (dpy, fp->card32);
if (name == 0)
return 0;
/*
* XGetAtomName allocates memory - don't leak
*/
if (last_name != 0)
XFree(last_name);
last_name = name;
if (result != 0)
strcpy(result, name);
/*
* Now split it up into parts and put them in
* their places. Since we are using parts of
* the original string, we must not free the Atom Name
*/
/* registry, foundry, family */
if ((props.beginning = n_fields(&name, 1, 3)) == 0)
return 0;
/* weight is the next */
if ((props.width = n_fields(&name, 1, 1)) == 0)
return 0;
/* slant, width, add style */
if ((props.middle = n_fields(&name, 1, 3)) == 0)
return 0;
/* pixel size */
if ((str = n_fields(&name, 1, 1)) == 0)
return 0;
if ((props.pixel_size = atoi(str)) == 0)
return 0;
/* point size */
if ((props.point_size = n_fields(&name, 1, 1)) == 0)
return 0;
/* res_x */
if ((str = n_fields(&name, 1, 1)) == 0)
return 0;
if ((props.res_x = atoi(str)) == 0)
return 0;
/* res_y */
if ((str = n_fields(&name, 1, 1)) == 0)
return 0;
if ((props.res_y = atoi(str)) == 0)
return 0;
/* spacing */
if ((props.spacing = n_fields(&name, 1, 1)) == 0)
return 0;
/* skip the average width */
if ((str = n_fields(&name, 1, 1)) == 0)
return 0;
/* the rest: charset registry and charset encoding */
props.end = name;
return &props;
}
/*
* Take the given font props and try to make a well formed font name specifying
* the same base font and size and everything, but in bold. The return value
* comes from a static variable, so be careful if you reuse it.
*/
static char *
bold_font_name(FontNameProperties *props)
{
static char ret[MAX_FONTNAME];
/*
* Put together something in the form
* "<beginning>-bold-<middle>-<pixel_size>-<point_size>-<res_x>-<res_y>"\
* "-<spacing>-*-<end>"
*/
sprintf(ret, "%s-bold-%s-%d-%s-%d-%d-%s-*-%s",
props->beginning,
props->middle,
props->pixel_size,
props->point_size,
props->res_x,
props->res_y,
props->spacing,
props->end);
return ret;
}
#if OPT_DEC_CHRSET
/*
* Take the given font props and try to make a well formed font name specifying
* the same base font but changed depending on the given attributes and chrset.
*
* For double width fonts, we just double the X-resolution, for double height
* fonts we double the pixel-size and Y-resolution
*/
char *
xtermSpecialFont(unsigned atts, unsigned chrset)
{
#if OPT_TRACE
static char old_spacing[80];
static FontNameProperties old_props;
#endif
TScreen *screen = &term->screen;
FontNameProperties *props;
char tmp[MAX_FONTNAME];
char *ret;
char *width;
int pixel_size;
int res_x;
int res_y;
props = get_font_name_props(screen->display, screen->fnt_norm, (char *)0);
if (props == 0)
return 0;
pixel_size = props->pixel_size;
res_x = props->res_x;
res_y = props->res_y;
if (atts & BOLD)
width = "bold";
else
width = props->width;
if (CSET_DOUBLE(chrset))
res_x *= 2;
if (chrset == CSET_DHL_TOP
|| chrset == CSET_DHL_BOT) {
res_y *= 2;
pixel_size *= 2;
}
#if OPT_TRACE
if (old_props.res_x != res_x
|| old_props.res_x != res_y
|| old_props.pixel_size != pixel_size
|| strcmp(old_props.spacing, props->spacing)) {
TRACE(("xtermSpecialFont(atts = %#x, chrset = %#x)\n", atts, chrset));
TRACE(("res_x = %d\n", res_x));
TRACE(("res_y = %d\n", res_y));
TRACE(("point_size = %s\n", props->point_size));
TRACE(("pixel_size = %d\n", pixel_size));
TRACE(("spacing = %s\n", props->spacing));
old_props.res_x = res_x;
old_props.res_x = res_y;
old_props.pixel_size = pixel_size;
old_props.spacing = strcpy(old_spacing, props->spacing);
}
#endif
sprintf(tmp, "%s-%s-%s-%d-%s-%d-%d-%s-*-%s",
props->beginning,
width,
props->middle,
pixel_size,
props->point_size,
res_x,
res_y,
props->spacing,
props->end);
ret = XtMalloc(strlen(tmp) + 1);
strcpy(ret, tmp);
return ret;
}
#endif /* OPT_DEC_CHRSET */
/*
* Case-independent comparison for font-names, including wildcards.
*/
static Boolean
same_font_name(char *pattern, char *match)
{
while (*pattern && *match) {
if (*pattern == '*') {
if (same_font_name(pattern+1, match)) {
return True;
} else if (same_font_name(pattern, match+1)) {
return True;
} else {
return False;
}
} else {
if (char2lower(*pattern++) != char2lower(*match++))
return False;
}
}
return (*pattern == *match); /* both should be NUL */
}
/*
* Double-check the fontname that we asked for versus what the font server
* actually gave us. The larger fixed fonts do not always have a matching bold
* font, and the font server may try to scale another font or otherwise
* substitute a mismatched font.
*
* If we cannot get what we requested, we will fallback to the original
* behavior, which simulates bold by overstriking each character at one pixel
* offset.
*/
static int
got_bold_font(Display *dpy, XFontStruct *fs, char *requested)
{
FontNameProperties *fp;
char actual[MAX_FONTNAME];
int got;
if ((fp = get_font_name_props(dpy, fs, actual)) == 0)
got = 0;
else
got = same_font_name(requested, actual);
return got;
}
/*
* If the font server tries to adjust another font, it may not adjust it
* properly. Check that the bounding boxes are compatible. Otherwise we'll
* leave trash on the display when we mix normal and bold fonts.
*/
static int
same_font_size(XFontStruct *nfs, XFontStruct *bfs)
{
return (
nfs->ascent == bfs->ascent
&& nfs->descent == bfs->descent
&& nfs->min_bounds.width == bfs->min_bounds.width
&& nfs->min_bounds.width == bfs->min_bounds.width
&& nfs->max_bounds.width == bfs->max_bounds.width
&& nfs->max_bounds.width == bfs->max_bounds.width);
}
/*
* Check if the font looks like it has fixed width
*/
static int
is_fixed_font(XFontStruct *fs)
{
return (fs->min_bounds.width == fs->max_bounds.width
&& fs->min_bounds.width == fs->min_bounds.width);
}
#define EmptyFont(fs) ((fs)->ascent + (fs)->descent == 0 \
|| (fs)->max_bounds.width == 0)
#define FontSize(fs) (((fs)->ascent + (fs)->descent) \
* (fs)->max_bounds.width)
int
xtermLoadFont (
TScreen *screen,
char *nfontname,
char *bfontname,
Bool doresize,
int fontnum)
{
/* FIXME: use XFreeFontInfo */
FontNameProperties *fp;
XFontStruct *nfs = NULL;
XFontStruct *bfs = NULL;
XGCValues xgcv;
unsigned long mask;
GC new_normalGC = NULL;
GC new_normalboldGC = NULL;
GC new_reverseGC = NULL;
GC new_reverseboldGC = NULL;
Pixel new_normal;
Pixel new_revers;
char *tmpname = NULL;
char normal[MAX_FONTNAME];
Boolean proportional = False;
int ch;
if (!nfontname) return 0;
if (fontnum == fontMenu_fontescape
&& nfontname != screen->menu_font_names[fontnum]) {
tmpname = (char *) malloc (strlen(nfontname) + 1);
if (!tmpname)
return 0;
strcpy (tmpname, nfontname);
}
TRACE(("xtermLoadFont normal %s\n", nfontname));
if (!(nfs = XLoadQueryFont (screen->display, nfontname))) goto bad;
if (EmptyFont(nfs))
goto bad; /* can't use a 0-sized font */
strcpy(normal, nfontname);
if (bfontname == 0) {
fp = get_font_name_props(screen->display, nfs, normal);
if (fp != 0) {
bfontname = bold_font_name(fp);
TRACE(("...derived bold %s\n", bfontname));
}
if (bfontname == 0
|| (bfs = XLoadQueryFont (screen->display, bfontname)) == 0) {
bfs = nfs;
TRACE(("...cannot load a matching bold font\n"));
} else if (!same_font_size(nfs, bfs)
|| !got_bold_font(screen->display, bfs, bfontname)) {
XFreeFont(screen->display, bfs);
bfs = nfs;
TRACE(("...did not get a matching bold font\n"));
}
} else if ((bfs = XLoadQueryFont (screen->display, bfontname)) == 0) {
bfs = nfs;
TRACE(("...cannot load bold font %s\n", bfontname));
}
if (EmptyFont(bfs))
goto bad; /* can't use a 0-sized font */
if (!same_font_size(nfs, bfs)
&& (is_fixed_font(nfs) && is_fixed_font(bfs))) {
XFreeFont(screen->display, bfs);
bfs = nfs;
TRACE(("...fixing mismatched normal/bold fonts\n"));
/*
* If we're given a nonnull bfontname here, it came from a
* resource setting. Perhaps the user did something like set
* the "*font" in a resource file. But they would be startled
* to see a mismatched bold font. Try again, asking the font
* server for the appropriate font.
*/
if (bfontname != 0) {
return xtermLoadFont (screen,
nfontname,
NULL, /* throw it away! */
doresize,
fontnum);
}
}
/*
* Normal/bold fonts should be the same width. Also, the min/max
* values should be the same.
*/
if (!is_fixed_font(nfs)
|| !is_fixed_font(bfs)
|| nfs->max_bounds.width != bfs->max_bounds.width) {
TRACE(("Proportional font! normal %d/%d, bold %d/%d\n",
nfs->min_bounds.width,
nfs->max_bounds.width,
bfs->min_bounds.width,
bfs->max_bounds.width));
proportional = True;
}
mask = (GCFont | GCForeground | GCBackground | GCGraphicsExposures |
GCFunction);
new_normal = getXtermForeground(term->flags, term->cur_foreground);
new_revers = getXtermBackground(term->flags, term->cur_background);
xgcv.font = nfs->fid;
xgcv.foreground = new_normal;
xgcv.background = new_revers;
xgcv.graphics_exposures = TRUE; /* default */
xgcv.function = GXcopy;
new_normalGC = XtGetGC((Widget)term, mask, &xgcv);
if (!new_normalGC) goto bad;
if (nfs == bfs) { /* there is no bold font */
new_normalboldGC = new_normalGC;
} else {
xgcv.font = bfs->fid;
new_normalboldGC = XtGetGC((Widget)term, mask, &xgcv);
if (!new_normalboldGC) goto bad;
}
xgcv.font = nfs->fid;
xgcv.foreground = new_revers;
xgcv.background = new_normal;
new_reverseGC = XtGetGC((Widget)term, mask, &xgcv);
if (!new_reverseGC) goto bad;
if (nfs == bfs) { /* there is no bold font */
new_reverseboldGC = new_reverseGC;
} else {
xgcv.font = bfs->fid;
new_reverseboldGC = XtGetGC((Widget)term, mask, &xgcv);
if (!new_reverseboldGC) goto bad;
}
if (NormalGC(screen) != NormalBoldGC(screen))
XtReleaseGC ((Widget) term, NormalBoldGC(screen));
XtReleaseGC ((Widget) term, NormalGC(screen));
if (ReverseGC(screen) != ReverseBoldGC(screen))
XtReleaseGC ((Widget) term, ReverseBoldGC(screen));
XtReleaseGC ((Widget) term, ReverseGC(screen));
NormalGC(screen) = new_normalGC;
NormalBoldGC(screen) = new_normalboldGC;
ReverseGC(screen) = new_reverseGC;
ReverseBoldGC(screen) = new_reverseboldGC;
/*
* If we're switching fonts, free the old ones. Otherwise we'll leak
* the memory that is associated with the old fonts. The
* XLoadQueryFont call allocates a new XFontStruct.
*/
if (screen->fnt_bold != 0
&& screen->fnt_bold != screen->fnt_norm)
XFreeFont(screen->display, screen->fnt_bold);
if (screen->fnt_norm != 0)
XFreeFont(screen->display, screen->fnt_norm);
screen->fnt_norm = nfs;
screen->fnt_bold = bfs;
screen->fnt_prop = proportional;
screen->fnt_boxes = True;
#if OPT_BOX_CHARS
/*
* Xterm uses character positions 1-31 of a font for the line-drawing
* characters. Check that they are all present. The null character
* (0) is special, and is not used.
*/
screen->force_box_chars = False;
for (ch = 1; ch < 32; ch++) {
int n = ch;
#if OPT_WIDE_CHARS
if (screen->utf8_mode) {
n = dec2ucs[ch];
if (n == UCS_REPL)
continue;
}
#endif
if (xtermMissingChar(n, nfs)
|| xtermMissingChar(n, bfs)) {
screen->fnt_boxes = False;
break;
}
}
TRACE(("Will %suse internal line-drawing characters\n", screen->fnt_boxes ? "not " : ""));
#endif
screen->force_box_chars = !screen->fnt_boxes;
screen->enbolden = screen->bold_mode
&& ((nfs == bfs) || same_font_name(normal, bfontname));
TRACE(("Will %suse 1-pixel offset/overstrike to simulate bold\n", screen->enbolden ? "" : "not "));
set_menu_font (False);
screen->menu_font_number = fontnum;
set_menu_font (True);
if (tmpname) { /* if setting escape or sel */
if (screen->menu_font_names[fontnum])
free (screen->menu_font_names[fontnum]);
screen->menu_font_names[fontnum] = tmpname;
if (fontnum == fontMenu_fontescape) {
set_sensitivity (term->screen.fontMenu,
fontMenuEntries[fontMenu_fontescape].widget,
TRUE);
}
#if OPT_SHIFT_KEYS
screen->menu_font_sizes[fontnum] = FontSize(nfs);
#endif
}
set_cursor_gcs (screen);
xtermUpdateFontInfo (screen, doresize);
return 1;
bad:
if (tmpname)
free (tmpname);
if (new_normalGC)
XtReleaseGC ((Widget) term, screen->fullVwin.normalGC);
if (new_normalGC && new_normalGC != new_normalboldGC)
XtReleaseGC ((Widget) term, new_normalboldGC);
if (new_reverseGC)
XtReleaseGC ((Widget) term, new_reverseGC);
if (new_reverseGC && new_reverseGC != new_reverseboldGC)
XtReleaseGC ((Widget) term, new_reverseboldGC);
if (nfs)
XFreeFont (screen->display, nfs);
if (bfs && nfs != bfs)
XFreeFont (screen->display, bfs);
return 0;
}
/*
* Set the limits for the box that outlines the cursor.
*/
void
xtermSetCursorBox (TScreen *screen)
{
static XPoint VTbox[NBOX];
XPoint *vp;
vp = &VTbox[1];
(vp++)->x = FontWidth(screen) - 1;
(vp++)->y = FontHeight(screen) - 1;
(vp++)->x = -(FontWidth(screen) - 1);
vp->y = -(FontHeight(screen) - 1);
screen->box = VTbox;
}
/*
* Compute useful values for the font/window sizes
*/
void
xtermComputeFontInfo (TScreen *screen, struct _vtwin *win, XFontStruct *font, int sbwidth)
{
int i, j, width, height;
win->f_width = (font->max_bounds.width);
win->f_height = (font->ascent + font->descent);
i = 2 * screen->border + sbwidth;
j = 2 * screen->border;
width = (screen->max_col + 1) * win->f_width + i;
height = (screen->max_row + 1) * win->f_height + j;
win->fullwidth = width;
win->fullheight = height;
win->width = width - i;
win->height = height - j;
}
/* save this information as a side-effect for double-sized characters */
void
xtermSaveFontInfo (TScreen *screen, XFontStruct *font)
{
screen->fnt_wide = (font->max_bounds.width);
screen->fnt_high = (font->ascent + font->descent);
}
/*
* After loading a new font, update the structures that use its size.
*/
void
xtermUpdateFontInfo (TScreen *screen, Bool doresize)
{
int scrollbar_width;
struct _vtwin *win = &(screen->fullVwin);
scrollbar_width = (term->misc.scrollbar
? screen->scrollWidget->core.width +
screen->scrollWidget->core.border_width
: 0);
xtermComputeFontInfo (screen, win, screen->fnt_norm, scrollbar_width);
xtermSaveFontInfo(screen, screen->fnt_norm);
if (doresize) {
if (VWindow(screen)) {
XClearWindow (screen->display, VWindow(screen));
}
DoResizeScreen (term); /* set to the new natural size */
if (screen->scrollWidget)
ResizeScrollBar (screen);
Redraw ();
}
xtermSetCursorBox (screen);
}
#if OPT_BOX_CHARS
/*
* Returns true if the given character is missing from the specified font.
*/
Bool
xtermMissingChar(unsigned ch, XFontStruct *font)
{
if (font != 0
&& font->per_char != 0
&& !font->all_chars_exist) {
static XCharStruct dft, *tmp = &dft, *pc = 0;
if (font->max_byte1 == 0) {
#if OPT_WIDE_CHARS
if (ch > 255) {
TRACE(("xtermMissingChar %#04x (row)\n", ch));
return True;
}
#endif
CI_GET_CHAR_INFO_1D (font, ch, tmp, pc);
}
#if OPT_WIDE_CHARS
else {
CI_GET_CHAR_INFO_2D (font, (ch >> 8), (ch & 0xff), tmp, pc);
}
#endif
if (CI_NONEXISTCHAR(pc)) {
TRACE(("xtermMissingChar %#04x (!exists)\n", ch));
return True;
}
}
if (ch < 32
&& term->screen.force_box_chars) {
TRACE(("xtermMissingChar %#04x (forced off)\n", ch));
return True;
}
return False;
}
/*
* The grid is abitrary, enough resolution that nothing's lost in initialization.
*/
#define BOX_HIGH 60
#define BOX_WIDE 60
#define MID_HIGH (BOX_HIGH/2)
#define MID_WIDE (BOX_WIDE/2)
/*
* ...since we'll scale the values anyway.
*/
#define SCALE_X(n) n = (n * (screen->fnt_wide-1)) / (BOX_WIDE-1)
#define SCALE_Y(n) n = (n * (screen->fnt_high-1)) / (BOX_HIGH-1)
/*
* Draw the given graphic character, if it is simple enough (i.e., a
* line-drawing character).
*/
void
xtermDrawBoxChar(TScreen *screen, int ch, unsigned flags, GC gc, int x, int y)
{
static const short
diamond[] = {
MID_WIDE, BOX_HIGH/4, 3*BOX_WIDE/4, MID_WIDE,
3*BOX_WIDE/4, MID_WIDE, MID_WIDE, 3*BOX_HIGH/4,
MID_WIDE, 3*BOX_HIGH/4, BOX_WIDE/4, MID_HIGH,
BOX_WIDE/4, MID_HIGH, MID_WIDE, BOX_HIGH/4,
MID_WIDE, BOX_HIGH/3, 2*BOX_WIDE/3, MID_WIDE,
2*BOX_WIDE/3, MID_WIDE, MID_WIDE, 2*BOX_HIGH/3,
MID_WIDE, 2*BOX_HIGH/3, BOX_WIDE/3, MID_HIGH,
BOX_WIDE/3, MID_HIGH, MID_WIDE, BOX_HIGH/3,
BOX_WIDE/4, MID_HIGH, 3*BOX_WIDE/4, MID_HIGH,
MID_WIDE, BOX_HIGH/4, MID_WIDE, 3*BOX_HIGH/4,
-1
},
degrees[] = {
MID_WIDE, BOX_HIGH/4, 2*BOX_WIDE/3, 3*BOX_HIGH/8,
2*BOX_WIDE/3, 3*BOX_HIGH/8, MID_WIDE, MID_HIGH,
MID_WIDE, MID_HIGH, BOX_WIDE/3, 3*BOX_HIGH/8,
BOX_WIDE/3, 3*BOX_HIGH/8, MID_WIDE, BOX_HIGH/4,
-1
},
lower_right_corner[] = {
0, MID_HIGH, MID_WIDE, MID_HIGH,
MID_WIDE, MID_HIGH, MID_WIDE, 0,
-1
},
upper_right_corner[] = {
0, MID_HIGH, MID_WIDE, MID_HIGH,
MID_WIDE, MID_HIGH, MID_WIDE, BOX_HIGH,
-1
},
upper_left_corner[] = {
MID_WIDE, MID_HIGH, BOX_WIDE, MID_HIGH,
MID_WIDE, MID_HIGH, MID_WIDE, BOX_HIGH,
-1
},
lower_left_corner[] = {
MID_WIDE, 0, MID_WIDE, MID_HIGH,
MID_WIDE, MID_WIDE, BOX_WIDE, MID_HIGH,
-1
},
cross[] = {
0, MID_HIGH, BOX_WIDE, MID_HIGH,
MID_WIDE, 0, MID_WIDE, BOX_HIGH,
-1
},
scan_line_1[] = {
0, 0, BOX_WIDE, 0,
-1
},
scan_line_3[] = {
0, BOX_HIGH/4, BOX_WIDE, BOX_HIGH/4,
-1
},
scan_line_7[] = {
0, MID_HIGH, BOX_WIDE, MID_HIGH,
-1
},
scan_line_9[] = {
0, 3*BOX_HIGH/4, BOX_WIDE, 3*BOX_HIGH/4,
-1
},
horizontal_line[] = {
0, BOX_HIGH, BOX_WIDE, BOX_HIGH,
-1
},
left_tee[] = {
MID_WIDE, 0, MID_WIDE, BOX_HIGH,
MID_WIDE, MID_HIGH, BOX_WIDE, MID_HIGH,
-1
},
right_tee[] = {
MID_WIDE, 0, MID_WIDE, BOX_HIGH,
MID_WIDE, MID_HIGH, 0, MID_HIGH,
-1
},
bottom_tee[] = {
0, MID_HIGH, BOX_WIDE, MID_HIGH,
MID_WIDE, 0, MID_WIDE, MID_HIGH,
-1
},
top_tee[] = {
0, MID_HIGH, BOX_WIDE, MID_HIGH,
MID_WIDE, MID_HIGH, MID_WIDE, BOX_HIGH,
-1
},
vertical_line[] = {
MID_WIDE, 0, MID_WIDE, BOX_HIGH,
-1
},
less_than_or_equal[] = {
5*BOX_WIDE/6, BOX_HIGH/6, BOX_WIDE/5, MID_HIGH,
5*BOX_WIDE/6, 5*BOX_HIGH/6, BOX_WIDE/5, MID_HIGH,
BOX_WIDE/6, 5*BOX_HIGH/6, 5*BOX_WIDE/6, 5*BOX_HIGH/6,
-1
},
greater_than_or_equal[] = {
BOX_WIDE/6, BOX_HIGH/6, 5*BOX_WIDE/6, MID_HIGH,
BOX_WIDE/6, 5*BOX_HIGH/6, 5*BOX_WIDE/6, MID_HIGH,
BOX_WIDE/6, 5*BOX_HIGH/6, 5*BOX_WIDE/6, 5*BOX_HIGH/6,
-1
};
static const short *lines[] = {
0, /* 00 */
diamond, /* 01 */
0, /* 02 */
0, /* 03 */
0, /* 04 */
0, /* 05 */
0, /* 06 */
degrees, /* 07 */
0, /* 08 */
0, /* 09 */
0, /* 0A */
lower_right_corner, /* 0B */
upper_right_corner, /* 0C */
upper_left_corner, /* 0D */
lower_left_corner, /* 0E */
cross, /* 0F */
scan_line_1, /* 10 */
scan_line_3, /* 11 */
scan_line_7, /* 12 */
scan_line_9, /* 13 */
horizontal_line, /* 14 */
left_tee, /* 15 */
right_tee, /* 16 */
bottom_tee, /* 17 */
top_tee, /* 18 */
vertical_line, /* 19 */
less_than_or_equal, /* 1A */
greater_than_or_equal, /* 1B */
0, /* 1C */
0, /* 1D */
0, /* 1E */
0, /* 1F */
};
XGCValues values;
GC gc2;
const short *p;
#if OPT_WIDE_CHARS
/*
* Try to show line-drawing characters if we happen to be in UTF-8
* mode, but have gotten an old-style font.
*/
if (screen->utf8_mode
&& (ch > 127)
&& (ch != UCS_REPL)) {
unsigned n;
for (n = 1; n < 32; n++) {
if (dec2ucs[n] == ch
&& !xtermMissingChar(n, (flags & BOLD)
? screen->fnt_bold
: screen->fnt_norm)) {
TRACE(("...use xterm-style linedrawing\n"));
ch = n;
break;
}
}
}
#endif
TRACE(("DRAW_BOX(%d) cell %dx%d at %d,%d%s\n",
ch, screen->fnt_high, screen->fnt_wide, y, x,
(ch < 0 || ch >= (int)(sizeof(lines)/sizeof(lines[0]))) ? "-BAD": ""));
if (!XGetGCValues(screen->display, gc, GCBackground, &values))
return;
values.foreground = values.background;
gc2 = XCreateGC(screen->display, VWindow(screen), GCForeground, &values);
XFillRectangle(
screen->display, VWindow(screen), gc2, x, y,
screen->fnt_wide,
screen->fnt_high);
XCopyGC(screen->display, gc, (1<<GCLastBit)-1, gc2);
XSetLineAttributes(screen->display, gc2,
(flags&BOLD)
? ((screen->fnt_high > 6)
? screen->fnt_high/6
: 1)
: ((screen->fnt_high > 8)
? screen->fnt_high/8
: 1),
LineSolid,
CapProjecting,
JoinMiter);
if (ch >= 0
&& ch < (int)(sizeof(lines)/sizeof(lines[0]))
&& (p = lines[ch]) != 0) {
int coord[4];
int n = 0;
while (*p >= 0) {