summaryrefslogtreecommitdiff
path: root/support/qfig/src/qfigsub3.bas
blob: 9232e56c5fed8a67d746a62257d09bf48a11c2d8 (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
' qfigsub3.bas

'$INCLUDE: 'QB.BI'
'REM $INCLUDE: 'MOUSE.BI'
'$INCLUDE: 'QFIG.BI'

SUB IO.Eepic
'                                                               eepic format
PRINT #1, "% Output of qfig.bas in eepic format"
PRINT #1, "% \hspace{"; fnor$(xmax% - xmin%, .25); "mm}"
PRINT #1, "% \vspace{"; fnor$(ymax% - ymin% + 10, .25); "mm}"
PRINT #1, "\unitlength=.25mm"
IF emulation% = 0 AND nocheat% = 0 THEN                     'define \shade[]
  PRINT #1, "\makeatletter"
  PRINT #1, "\def\shade{\@ifnextchar[{\shade@special}{\@killglue\special{sh}\ignorespaces}}"
  PRINT #1, "\def\shade@special[#1]{\@killglue\special{sh #1}\ignorespaces}"
  PRINT #1, "\makeatother"
END IF
PRINT #1, "\begin{picture}("; fnor$(xmax% - xmin%, 1!); ",";
PRINT #1, fnor$(ymax% - ymin% + 10, 1!); ")(";
PRINT #1, fnor$(xmin%, 1!); ","; fnor$(-5!, 1!); ")"
PRINT #1, "\thinlines"
PRINT #1, "\typeout{\space\space\space eepic-ture exported by 'qfig'.";
IF emulation% = 0 THEN PRINT #1, "}" ELSE PRINT #1, " (emulated)}"
PRINT #1, "\font\FonttenBI=cmbxti10\relax"
PRINT #1, "\font\FonttwlBI=cmbxti10 scaled \magstep1\relax"
FOR i% = 0 TO nobj% - 1
ON fnoo%(i%) GOSUB eepline, eepline, eepline, eepline, eepcirc, eeparc, eepellps, eepbox, eepbox, eepmsgs, eepline
NEXT i%: PRINT #1, "%"
PRINT #1, "\end{picture}": EXIT SUB
'                                                                line object
eepline:
PRINT #1, "% object #"; i%;
SELECT CASE fnoo%(i%)
  CASE 1, 2
	PRINT #1, " (line)"
  CASE 3, 4
	PRINT #1, " (curve)"
  CASE 11
	PRINT #1, " (arrow of #"; STR$(obj%(i%, 5)); " at"; STR$(obj%(i%, 6)); ")"
END SELECT
GOSUB eeplinethickness
IF fnoo%(i%) = 11 OR obj%(i%, 5) = 0 THEN
  PRINT #1, "\path ";
ELSE
  PRINT #1, eepicpattern$(obj%(i%, 5));
END IF
IF fnoo%(i%) = 3 OR fnoo%(i%) = 4 THEN
  FOR k% = 0 TO obj%(i%, 1) - 2
  x0% = xx(i%, k%): x1% = xx(i%, k% + 1): x2% = xx(i%, k% + 2)
  y0% = yy(i%, k%): y1% = yy(i%, k% + 1): y2% = yy(i%, k% + 2)
  G.XYparam x0%, y0%, x1%, y1%, x2%, y2%, ax, bx, cx, ay, by, cy
  jlast% = interpolcurve% - 1
  IF k% = obj%(i%, 1) - 2 THEN jlast% = 2 * interpolcurve%
  FOR j% = 0 TO jlast%: t = CSNG(j%) / CSNG(interpolcurve%)
  sx = ax * t * t + bx * t + cx: sy = ay * t * t + by * t + cy
  PRINT #1, "("; fnor$(sx, 1!); ","; fnor$(ymax% - sy, 1!); ")";
  IF j% <> jlast% AND INT((j% + 1) / 5) * 5 = j% + 1 THEN PRINT #1,
  NEXT j%: PRINT #1, : NEXT k%
ELSE
  FOR j% = 0 TO obj%(i%, 1)
  PRINT #1, "("; fnor$(xx(i%, j%), 1!); ","; fnor$(ymax% - yy(i%, j%), 1!); ")";
  IF j% <> obj%(i%, 1) AND INT((j% + 1) / 5) * 5 = j% + 1 THEN PRINT #1,
  NEXT j%: PRINT #1,
END IF
GOSUB eepobjectdone: RETURN
'                                                              circle object
eepcirc: PRINT #1, "% object #"; i%; " (circle)": GOSUB eeplinethickness
PRINT #1, "\put("; fnor$(xx(i%, 0), 1!); ","; fnor$(ymax% - yy(i%, 0), 1!); ")";
PRINT #1, "{\circle{"; fnor$(xx(i%, 2), 2!); "}}"
GOSUB eepobjectdone: RETURN
'                                                                 arc object
eeparc: PRINT #1, "% object #"; i%; " (arc)": GOSUB eeplinethickness
emu$ = "": IF nocheat% = 0 AND emulation% = 1 THEN emu$ = "%"
rr13 = yy(i%, 4) - yy(i%, 3): IF rr13 < 0! THEN rr13 = 2! * pi + rr13
PRINT #1, emu$; "\put("; fnor$(xx(i%, 1), 1!); ","; fnor$(ymax% - yy(i%, 1), 1!); ")";
PRINT #1, "{\arc{"; fnor$(xx(i%, 3), 2!); "}{"; fnor$(2! * pi - yy(i%, 4), 1!);
PRINT #1, "}{"; fnor$(2! * pi - yy(i%, 4) + rr13, 1!); "}}"
IF nocheat% = 0 AND emulation% = 1 THEN
  PRINT #1, "\path";                                          'approximation
  rad = xx(i%, 3): rr1 = yy(i%, 3): rr3 = yy(i%, 4)
  IF rr1 > rr3 THEN rr1 = rr1 - 2! * pi
  jj% = INT((rr3 - rr1) / (pi / CSNG(interpolang%)))      'every 5-degrees
  FOR j% = 0 TO jj%: t = rr1 + j% * (rr3 - rr1) / jj%
	x1 = xx(i%, 1) + rad * COS(t): y1 = yy(i%, 1) - rad * SIN(t)
	PRINT #1, "("; fnor$(x1, 1!); ","; fnor$(ymax% - y1, 1!); ")";
	IF j% <> jj% AND INT((j% + 1) / 4) * 4 = j% + 1 THEN PRINT #1,
  NEXT j%: PRINT #1,
END IF
GOSUB eepobjectdone: RETURN
'                                                             ellipse object
eepellps: PRINT #1, "% object #"; i%; " (ellipse)": GOSUB eeplinethickness
IF yy(i%, 2) > 1! THEN
  rrty = xx(i%, 2): rrtx = xx(i%, 2) / yy(i%, 2)
ELSE
  rrtx = xx(i%, 2): rrty = xx(i%, 2) * yy(i%, 2)
END IF
emu$ = "": IF nocheat% = 0 AND emulation% = 1 THEN emu$ = "%"
PRINT #1, emu$; "\put("; fnor$(xx(i%, 0), 1!); ","; fnor$(ymax% - yy(i%, 0), 1!); ")";
PRINT #1, "{\ellipse{";
IF emulation% = 0 THEN
  PRINT #1, fnor$(rrtx, 2!); "}{"; fnor$(rrty, 2!);
ELSE
  PRINT #1, fno$(rrtx, 2!); "}{"; fno$(rrty, 2!);
END IF
PRINT #1, "}}"
IF nocheat% = 0 AND emulation% = 1 THEN                       'approximation
  PRINT #1, "\path";
  x1 = xx(i%, 0) + rrtx: y1 = yy(i%, 0)
  FOR jj% = 0 TO 2 * interpolang%
	t = jj% * pi / CSNG(interpolang%)                       'every 5 degrees
	x1 = xx(i%, 0) + rrtx * COS(t): y1 = yy(i%, 0) - rrty * SIN(t)
	PRINT #1, "("; fnor$(x1, 1!); ","; fno$(ymax% - y1, 1!); ")";
	IF jj% <> 2 * interpolang% AND INT((jj% + 1) / 5) * 5 = jj% + 1 THEN PRINT #1,
  NEXT jj%: PRINT #1,
END IF
GOSUB eepobjectdone: RETURN
'                                             box object with or w/o filling
eepbox: PRINT #1, "% object #"; i%; " (rectangle)";
IF fnoo%(i%) = 8 THEN PRINT #1,  ELSE PRINT #1, " with filling"
GOSUB eeplinethickness
IF fnoo%(i%) = 9 THEN
  PRINT #1, "\shade";
  IF emulation% = 0 AND nocheat% = 0 THEN PRINT #1, tpicshade$(tpicshade%);
END IF
IF obj%(i%, 5) = 0 THEN
  PRINT #1, "\path ";
ELSE
  PRINT #1, eepicpattern$(obj%(i%, 5));
END IF
PRINT #1, "("; fnor$(xx(i%, 0), 1!); ","; fnor$(ymax% - yy(i%, 0), 1!); ")";
PRINT #1, "("; fnor$(xx(i%, 0), 1!); ","; fnor$(ymax% - yy(i%, 1), 1!); ")"
PRINT #1, "("; fnor$(xx(i%, 1), 1!); ","; fnor$(ymax% - yy(i%, 1), 1!); ")";
PRINT #1, "("; fnor$(xx(i%, 1), 1!); ","; fnor$(ymax% - yy(i%, 0), 1!); ")";
PRINT #1, "("; fnor$(xx(i%, 0), 1!); ","; fnor$(ymax% - yy(i%, 0), 1!); ")"
'
IF nocheat% = 0 AND fnoo%(i%) = 9 AND obj%(i%, 6) <> 0 THEN
  emu$ = "": IF emulation% = 0 THEN emu$ = "%"             'for ecleepic.sty
  ji% = 5 - obj%(i%, 6)
  ij% = ji% * SGN(yy(i%, 1) - yy(i%, 0))
  jj% = INT(ABS(yy(i%, 0) - yy(i%, 1)) / ji% - .4)
  jk% = ji% * SGN(xx(i%, 1) - xx(i%, 0)) / 2
  IF jj% <= 1 THEN
	jj% = 1
	ij% = (yy(i%, 1) - yy(i%, 0)) / 2
  END IF
  PRINT #1, emu$; "\thinlines     % substitute for shade pattern"
  FOR j% = 1 TO jj%
	PRINT #1, emu$; "\dottedline{"; fno$(ji%, 1); "}";
	PRINT #1, "("; fnor$(xx(i%, 0) + jk%, 1!); ","; fnor$(ymax% - yy(i%, 0) - j% * ij%, 1!); ")";
	PRINT #1, "("; fnor$(xx(i%, 1) - jk%, 1!); ","; fnor$(ymax% - yy(i%, 0) - j% * ij%, 1!); ")"
  NEXT j%
END IF
GOSUB eepobjectdone: RETURN
'                                                                   messages
eepmsgs: PRINT #1, "% object #"; i%; " (string)"
ams$ = "": kanji% = 0: special% = 0: script% = 0
FOR j% = 1 TO obj%(i%, 1)
 IF wspec% = 1 THEN
  TeX.Characters i%, j%, ams$, kanji%, special%, script%
 ELSE
  IF yy(i%, j%) = 0! THEN
    a$ = CHR$(xx(i%, j%))
    ams$ = ams$ + a$
  END IF
 END IF
 NEXT j%
IF script% <> 0 THEN ams$ = ams$ + "}}$"
IF kanji% = 0 THEN
  xy% = eheight(obj%(i%, 5)) * obj%(i%, 4) * ptmm / .25
ELSE
  xy% = jheight(obj%(i%, 5)) * obj%(i%, 4) * ptmm / .25
END IF
PRINT #1, "\put("; fnor$(xx(i%, 0), 1!); ",";
PRINT #1, fnor$(ymax% - yy(i%, 0) - xy%, 1!); ")";
IF obj%(i%, 6) <> 0 THEN
   PRINT #1, "{\makebox(0,0)[cc]{"; chartex$((obj%(i%, 4) - 10) / 2, obj%(i%, 5));
ELSE
   PRINT #1, "{{"; chartex$((obj%(i%, 4) - 10) / 2, obj%(i%, 5));
END IF
IF kanji% <> 0 THEN PRINT #1, charjtex$((obj%(i%, 4) - 10) / 2, obj%(i%, 5));
PRINT #1, ams$; "}}"
RETURN
'                                          line thickness / line pattern set
eeplinethickness:
IF fnoo%(i%) = 9 THEN tpicshade% = obj%(i%, 6)
'
IF obj%(i%, 4) = 0 THEN RETURN
IF obj%(i%, 4) = 1 THEN PRINT #1, "\thicklines": RETURN
PRINT #1, "\Thicklines": RETURN
'                              object save done : it is tedious but ..... OK
eepobjectdone:
IF obj%(i%, 4) = 0 THEN RETURN
PRINT #1, "\thinlines": RETURN
'
END SUB

SUB IO.Export
'                                                              PiCTeX format
PRINT #1, "% Output of qfig.bas in PiCTeX format"
PRINT #1, "% \hspace{"; fno$(xmax% - xmin%, .25); "mm}"
PRINT #1, "% \vspace{"; fno$(ymax% - ymin% + 10, .25); "mm}"
PRINT #1, "\mbox{\beginpicture"
PRINT #1, "\setcoordinatesystem units <.25mm,.25mm>"
PRINT #1, "\unitlength=.25mm"
PRINT #1, "\linethickness = .5pt"
PRINT #1, "\setplotsymbol({\fiverm .})"
PRINT #1, "\setplotarea x from "; xmin%; " to "; xmax%; ", y from ";
PRINT #1, "0 to "; ymax% - ymin% + 10      'approx. 7pt is added for spacing
PRINT #1, "\typeout{\space\space\space Picture exported by 'qfig'.}"
PRINT #1, "\font\FonttenBI=cmbxti10\relax"
PRINT #1, "\font\FonttwlBI=cmbxti10 scaled \magstep1\relax"
FOR i% = 0 TO nobj% - 1
ON fnoo%(i%) GOSUB expline, expline, expline, expline, expcirc, exparc, expellps, expbox, expbox, expmsgs, expline
NEXT i%: PRINT #1, "%"
PRINT #1, "\endpicture}": EXIT SUB
'                                                                line object
expline:
PRINT #1, "% object #"; i%;
SELECT CASE fnoo%(i%)
  CASE 1, 2
	PRINT #1, " (line)"
  CASE 3, 4
	PRINT #1, " (curve)"
  CASE 11
	PRINT #1, " (arrow of #"; STR$(obj%(i%, 5)); " at"; STR$(obj%(i%, 6)); ")"
END SELECT
GOSUB linethickness
IF fnoo%(i%) = 3 OR fnoo%(i%) = 4 THEN
  PRINT #1, "\setquadratic": PRINT #1, "\plot ";
  FOR k% = 0 TO obj%(i%, 1) - 2
  x0% = xx(i%, k%): x1% = xx(i%, k% + 1): x2% = xx(i%, k% + 2)
  y0% = yy(i%, k%): y1% = yy(i%, k% + 1): y2% = yy(i%, k% + 2)
  G.XYparam x0%, y0%, x1%, y1%, x2%, y2%, ax, bx, cx, ay, by, cy
  jlast% = 4: IF k% = obj%(i%, 1) - 2 THEN jlast% = 10
  FOR j% = 0 TO jlast%
  t = j% / 5!: sx = ax * t * t + bx * t + cx: sy = ay * t * t + by * t + cy
  PRINT #1, sx; ymax% - sy;
  IF INT((j% + 1) / 5) * 5 = j% + 1 THEN PRINT #1,
  NEXT j%: NEXT k%: PRINT #1, "/"
ELSE
  PRINT #1, "\setlinear"
  FOR j% = 0 TO obj%(i%, 1) - 1: k% = j% + 1
  IF xx(i%, j%) = xx(i%, k%) OR yy(i%, j%) = yy(i%, k%) THEN
	PRINT #1, "\putrule from "; xx(i%, j%); ymax% - yy(i%, j%); " to "; xx(i%, k%); ymax% - yy(i%, k%)
  ELSE
	PRINT #1, "\plot "; xx(i%, j%); ymax% - yy(i%, j%); xx(i%, k%); ymax% - yy(i%, k%); "/"
  END IF
  NEXT j%
END IF
GOSUB objectdone: RETURN
'                                                              circle object
expcirc: PRINT #1, "% object #"; i%; " (circle)": GOSUB linethickness
PRINT #1, "\circulararc 360 degrees from "; xx(i%, 1); ymax% - yy(i%, 1);
PRINT #1, " center at "; xx(i%, 0); ymax% - yy(i%, 0)
GOSUB objectdone: RETURN
'                                                                 arc object
exparc: PRINT #1, "% object #"; i%; " (arc)": GOSUB linethickness
rr13 = (yy(i%, 4) - yy(i%, 3)) * 180! / pi
IF rr13 < 0! THEN rr13 = 360! + rr13
PRINT #1, "\circulararc "; rr13; " degrees from ";
PRINT #1, xx(i%, 0); ymax% - yy(i%, 0); " center at ";
PRINT #1, xx(i%, 1); ymax% - yy(i%, 1)
GOSUB objectdone: RETURN
'                                                             ellipse object
expellps: PRINT #1, "% object #"; i%; " (ellipse)": GOSUB linethickness
IF yy(i%, 2) > 1! THEN
  rrtx = 1!: rrty = yy(i%, 2)
ELSE
  rrty = 1!: rrtx = 1! / yy(i%, 2)
END IF
PRINT #1, "\ellipticalarc axes ratio "; MID$(STR$(rrtx), 2); ":"; MID$(STR$(rrty), 2);
PRINT #1, " 360 degrees from "; xx(i%, 1); ymax% - yy(i%, 1)
PRINT #1, "center at "; xx(i%, 0); ymax% - yy(i%, 0)
GOSUB objectdone: RETURN
'                                             box object with or w/o filling
expbox: PRINT #1, "% object #"; i%; " (rectangle)";
IF fnoo%(i%) = 8 THEN PRINT #1,  ELSE PRINT #1, " with filling"
GOSUB linethickness
IF fnoo%(i%) = 9 THEN
  PRINT #1, "\setshadegrid span <"; SQR(2 ^ (3 - obj%(i%, 6))); "pt>"
  PRINT #1, "\shaderectangleson"
END IF
PRINT #1, "\putrectangle ";
PRINT #1, "corners at "; xx(i%, 0); ymax% - yy(i%, 0); " and "; xx(i%, 1); ymax% - yy(i%, 1)
IF fnoo%(i%) = 9 THEN PRINT #1, "\shaderectanglesoff"
GOSUB objectdone: RETURN
'                                                                   messages
expmsgs: PRINT #1, "% object #"; i%; " (string)"
ams$ = "": kanji% = 0: special% = 0: script% = 0
FOR j% = 1 TO obj%(i%, 1)
 IF wspec% = 1 THEN
    TeX.Characters i%, j%, ams$, kanji%, special%, script%
 ELSE
   IF yy(i%, j%) = 0! THEN
     a$ = CHR$(xx(i%, j%))
     ams$ = ams$ + a$
   END IF
 END IF
NEXT j%
IF script% <> 0 THEN ams$ = ams$ + "}}$"
PRINT #1, "\put{{"; chartex$((obj%(i%, 4) - 10) / 2, obj%(i%, 5));
IF kanji% <> 0 THEN PRINT #1, charjtex$((obj%(i%, 4) - 10) / 2, obj%(i%, 5));
'bbbbbbbbbbbbbbbbbbb
IF kanji% = 0 THEN
  xy% = eheight(obj%(i%, 5)) * obj%(i%, 4) * ptmm / .25
ELSE
  xy% = jheight(obj%(i%, 5)) * obj%(i%, 4) * ptmm / .25
END IF
IF obj%(i%, 6) <> 0 THEN
	PRINT #1, ams$; "}}[cc] at "; xx(i%, 0); ymax% - yy(i%, 0) - xy%
ELSE
	PRINT #1, ams$; "}}[lt] at "; xx(i%, 0); ymax% - yy(i%, 0)
END IF
RETURN
'                                          line thickness / line pattern set
linethickness:
IF obj%(i%, 4) = 0 THEN GOTO dashpattern
x1 = obj%(i%, 4): IF x1 = 0 THEN x1 = .5
PRINT #1, "\linethickness ="; x1; "pt"
IF fnoo%(i%) = 8 OR fnoo%(i%) = 9 THEN GOTO dashpattern
'                                      plotsymbol stolen from "xfig" on UNIX
PRINT #1, "\setplotsymbol({\makebox(0,0)[l]{\tencirc\symbol{'16";
PRINT #1, RIGHT$(STR$(obj%(i%, 4) - 1), 1); "}}})"
dashpattern:
IF obj%(i%, 5) = 0 OR fnoo%(i%) = 11 THEN RETURN
PRINT #1, "\setdashpattern < "; dpattern$(obj%(i%, 5)); " >"
RETURN
'                              object save done : it is tedious but ..... OK
objectdone:
IF obj%(i%, 4) = 0 THEN GOTO objectdone1
PRINT #1, "\linethickness = .5pt"
PRINT #1, "\setplotsymbol({\fiverm .})"
objectdone1:
IF obj%(i%, 5) <> 0 AND fnoo%(i%) <> 11 THEN PRINT #1, "\setsolid"
RETURN
'
END SUB

SUB IO.File
'                                                             file operation
STATIC nfilenoext$
'
KeySwitch 0
KEY(17) OFF: KEY(19) OFF
CursorDisplay px%, py%: SCREEN scrtype%
CLS 0
SCREEN scrtype%
COLOR 7
PRINT "File Operations:    Select one or [ESC] to quit": PRINT
FOR i% = 1 TO UBOUND(iomessages$)
PRINT TAB(20); fno$(i%, 1); ". "; iomessages$(i%): NEXT i%
'
ifile% = 1: jfile% = 1
rowold% = row%: colold% = col%
savepx% = px%: savepy% = py%: savepxold% = pxold%: savepyold% = pyold%
px% = pxo% + windowx%(wndwfctr%) / 2: py% = pyo% + windowy%(wndwfctr%) / 2
col% = px%: row% = py%: rowrow% = row%
'IF mouswitch% THEN MouseLocate py%, px%             '<=== when Mouse is used
'
LOCATE 3, 19: COLOR 3: PRINT " 1.";
COLOR 3: PRINT " "; iomessages$(1); : COLOR 7
DO: a$ = KeyIsTouched$
  IF jfile% <> ifile% THEN
	LOCATE 2 + jfile%, 19: PRINT " "; fno$(jfile%, 1); ". "; iomessages$(jfile%);
	LOCATE 2 + ifile%, 19: COLOR 3: PRINT " "; fno$(ifile%, 1); ".";
	COLOR 3: PRINT " "; iomessages$(ifile%); : COLOR 7: jfile% = ifile%
  END IF
  SELECT CASE a$
	CASE CHR$(&H0) + CHR$(UP)
	  IF ifile% > 1 THEN ifile% = ifile% - 1 ELSE ifile% = UBOUND(iomessages$)
	CASE CHR$(&H0) + CHR$(DOWN)
	  IF ifile% < UBOUND(iomessages$) THEN ifile% = ifile% + 1 ELSE ifile% = 1
	CASE CHR$(SP)
	  EXIT DO
	CASE CHR$(CR)
	  EXIT DO
	CASE IS >= CHR$(&H31)
	  IF a$ <= CHR$(&H37) THEN
		ifile% = VAL(a$)
		LOCATE 2 + jfile%, 19: PRINT " "; fno$(jfile%, 1); ". "; iomessages$(jfile%);
		LOCATE 2 + ifile%, 19: COLOR 11: PRINT " "; fno$(ifile%, 1); ".";
		COLOR 3: PRINT " "; iomessages$(ifile%);
		COLOR 7: EXIT DO
	  END IF
	CASE CHR$(&H1B)
	  GOTO filedone
	CASE ""
	  IF mouswitch% THEN
'       MousePoll row%, col%, lbut%, rbut%         '<=== when Mouse is used
		IF lbut% <> 0 OR rbut% <> 0 THEN
		  EXIT DO
		END IF
		IF ABS(row% - rowrow%) > 4 THEN
		  IF row% > rowrow% THEN
			IF ifile% < UBOUND(iomessages$) THEN ifile% = ifile% + 1 ELSE ifile% = 1
		  END IF
		  IF row% < rowrow% THEN
			IF ifile% > 1 THEN ifile% = ifile% - 1 ELSE ifile% = UBOUND(iomessages$)
		  END IF
		  rowrow% = row%
		END IF
	  END IF
  END SELECT
LOOP
'
LOCATE 4 + UBOUND(iomessages$), 1
'
SELECT CASE ifile%
CASE 1 TO 3
  shlcmd$ = "dir *.qfg  /w"
CASE 4 TO 6 'ELSE
  shlcmd$ = "dir *.tex /w"
CASE 7
  QUIT0
  EXIT SUB
END SELECT
'
displaydirectory:
SHELL shlcmd$
PRINT : PRINT "Enter the file name : "; : Chr.Input nfilenoext$
nfile$ = nfilenoext$
IF nfile$ = "" THEN nfile$ = "$$gifq$$"
i% = INSTR(nfile$, ":")
pfile$ = LEFT$(nfile$, i%): nfile$ = MID$(nfile$, i% + 1)
DO UNTIL INSTR(nfile$, "\") = 0
  i% = INSTR(nfile$, "\")
  pfile$ = pfile$ + LEFT$(nfile$, i%)
  nfile$ = MID$(nfile$, i% + 1)
LOOP
i% = INSTR(nfile$, ".")
IF i% <> 0 THEN
  nfilenoext$ = LEFT$(LEFT$(nfile$, i% - 1), 8)
  nfile$ = nfilenoext$ + LEFT$(MID$(nfile$, i%), 4)
  IF ifile% >= 4 THEN nfile1$ = nfilenoext$: nfile1$ = nfile1$ + ".tex"
ELSE
  nfilenoext$ = LEFT$(nfile$, 8): nfile$ = nfilenoext$
  nfile1$ = nfile$
  IF ifile% >= 3 THEN nfile$ = nfile$ + ".qfg"
  IF ifile% >= 4 THEN nfile1$ = nfile1$ + ".tex"
END IF
'
nfilenoext$ = pfile$ + nfilenoext$: nfile$ = pfile$ + nfile$
IF INSTR(nfile$, "*") <> 0 THEN
  shlcmd$ = "dir /w " + nfile$
  nfilenoext$ = nfile$
  GOTO displaydirectory
END IF
'
both% = 1
 notexist% = 0: OPEN nfile$ FOR RANDOM AS #1 ' check the existence
 IF LOF(1) = 0 THEN notexist% = 1: both% = 0 ' non-existent
 CLOSE : IF notexist% = 1 THEN KILL nfile$

 IF ifile% > 3 THEN
   OPEN nfile1$ FOR RANDOM AS #1 ' check the existence
   IF LOF(1) <> 0 THEN notexist% = 0: both% = both% + 2 ' existent
   CLOSE : IF both% < 2 THEN KILL nfile1$
 END IF

IF notexist% = 0 AND ifile% < 3 THEN
  OPEN nfile$ FOR INPUT AS #1
  IO.Load ifile%: CLOSE
ELSEIF ifile% > 2 THEN
  IF notexist% = 0 THEN
	PRINT : PRINT : PRINT TAB(10); "The file(s) '"; : COLOR 14
	SELECT CASE both%
	CASE 1
	  PRINT nfile$; : COLOR 7: PRINT "' already exists.": PRINT
	CASE 2
	  PRINT nfile1$; : COLOR 7: PRINT "' already exists.": PRINT
	CASE 3
	  PRINT nfile$; " & "; nfile1$; : COLOR 7: PRINT "' already exist.": PRINT
	END SELECT
	PRINT TAB(25); " ..... Do you want to overwrite (y/n)? ";
	DO: res$ = INKEY$
	LOOP UNTIL UCASE$(res$) = "Y" OR UCASE$(res$) = "N"
	IF UCASE$(res$) = "N" THEN GOTO filedone
  END IF
  IF ifile% = 3 THEN
    OPEN nfile$ FOR OUTPUT AS #1
    IO.Save 3: CLOSE
  ELSEIF ifile% >= 4 THEN
   OPEN nfile$ FOR OUTPUT AS #1
   IO.Save 3: CLOSE
   OPEN nfile1$ FOR OUTPUT AS #1
   IO.Save ifile%: CLOSE
 END IF
END IF
filedone:
row% = rowold%: col% = colold%
px% = savepx%: py% = savepy%: pxold% = savepxold%: pyold% = savepyold%
KeySwitch 1
SCREEN scrtype%: CL.R.edraw 0, 0: CursorDisplay px%, py%
KeyDisplay
KEY(17) ON: KEY(19) ON
'
END SUB

SUB IO.Load (ifile%)
'                                                                  load data

IF nobj% <> 0 THEN
 PRINT : PRINT CHR$(7); "Are you sure you don't want to save"
 PRINT "current file...(y/n)"
 DO: aaa$ = INKEY$: LOOP UNTIL (aaa$ <> "" AND INSTR("yYnN", aaa$))
 IF (aaa$ = "n") OR (aaa$ = "N") THEN EXIT SUB
END IF

nobjstart% = 0: IF ifile% = 2 THEN nobjstart% = nobj%
INPUT #1, aaa$
IF aaa$ <> FILE.CHECK$ THEN
  PRINT : PRINT CHR$(7); "This is not a QFIG file."
  PRINT "hit any key...": CLOSE
  DO: aaa$ = INKEY$: LOOP UNTIL aaa$ <> ""
ELSE
  nobj% = nobjstart%
  CLS 0
  IF ifile% = 2 THEN
	INPUT #1, i%, j%, k%, L%
'        CLS 0
  ELSE
	INPUT #1, xmin%, xmax%, ymin%, ymax%
  END IF
  LOCATE 12, 30: COLOR 10: PRINT msgload$; : COLOR 7
  SLEEP 1
  DO UNTIL EOF(1)
	INPUT #1, obj%(nobj%, 0), obj%(nobj%, 1), obj%(nobj%, 2), obj%(nobj%, 3), obj%(nobj%, 4), obj%(nobj%, 5), obj%(nobj%, 6)
	IF obj%(nobj%, 0) = 11 THEN obj%(nobj%, 5) = obj%(nobj%, 5) + nobjstart%
	'check to see if loaded string is boxtext.
	IF obj%(nobj%, 0) = 10 THEN
	 IF obj%(nobj%, 6) <> 0 THEN
	  obj%(nobj%, 6) = obj%(nobj%, 6) + nobjstart%
	 END IF
	END IF
	FOR i% = 0 TO obj%(nobj%, 1)
	INPUT #1, xx(nobj%, i%), yy(nobj%, i%): NEXT i%
	nobj% = nobj% + 1
  LOOP
END IF
'
END SUB

SUB IO.Save (ifile%)
'                                                                  save data
IF wrong% <> 1 THEN
  CL.R.edraw -1, 1
  CursorDisplay px%, py%
END IF
CLS 0
LOCATE 12, 30: COLOR 10: PRINT msgsave$; : COLOR 7
SELECT CASE ifile%
  CASE 3
'                                                              simple format
	PRINT #1, FILE.CHECK$
	PRINT #1, xmin%; xmax%; ymin%; ymax%
	FOR i% = 0 TO nobj% - 1
	PRINT #1, fnoo%(i%); obj%(i%, 1); obj%(i%, 2); obj%(i%, 3); obj%(i%, 4); obj%(i%, 5); obj%(i%, 6)
	FOR j% = 0 TO obj%(i%, 1): PRINT #1, xx(i%, j%); yy(i%, j%): NEXT j%
	NEXT i%
  CASE 4
	IO.Export
  CASE 5
	emulation% = 0
	IO.Eepic
  CASE 6
	emulation% = 1
	IO.Eepic
END SELECT
'
END SUB

SUB TeX.Characters (i%, j%, ams$, kanji%, special%, script%)
'                                              output TeX Special Characters
kanji% = kanji% + INT(yy(i%, j%))
IF yy(i%, j%) = 0! THEN
  a$ = CHR$(xx(i%, j%))
  IF special% = 0 AND a$ = "\" THEN special% = 1: EXIT SUB
  IF INSTR("^\@_", a$) <> 0 THEN
	IF special% = 0 AND INSTR("^@_", a$) <> 0 THEN
	  SELECT CASE a$
		CASE "@"
		  IF script% = 0 THEN EXIT SUB
		  a$ = "}}$"
		  script% = 0
		CASE ELSE
		  IF a$ = "^" AND script% = 1 THEN EXIT SUB
		  IF a$ = "_" AND script% = 2 THEN EXIT SUB
		  IF a$ = "^" THEN script% = 1 ELSE script% = 2
		  a$ = "$" + a$ + "{\mbox{"
		  IF obj%(i%, 4) = 10 THEN a$ = a$ + "\viipt " ELSE a$ = a$ + "\viiipt "
	  END SELECT
	ELSE
	  special% = 0
	  IF a$ = "^" THEN
		a$ = "{\tt\symbol{'136}}"
	  ELSEIF a$ = "\" THEN
		a$ = "{\tt\symbol{'134}}"
	  ELSEIF a$ = "_" THEN
		a$ = "\_"
	  END IF
	END IF
  ELSE
	IF special% = 1 THEN special% = 0
	IF INSTR("#$%&{}", a$) <> 0 THEN
	  a$ = "\" + a$
	ELSEIF INSTR("<>-|", a$) <> 0 THEN
	  a$ = "$" + a$ + "$"
	ELSEIF a$ = "~" THEN
	  a$ = "{\tt\symbol{'176}}"
	END IF
  END IF
  IF ASC(a$) < &H20 OR ASC(a$) > &H7E THEN a$ = " "
  ams$ = ams$ + a$
ELSE
  ams$ = ams$ + STRING$(1, VAL("&j" + HEX$(yy(i%, j%)) + HEX$(xx(i%, j%))))
END IF
'
END SUB