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1.26 ! kristaps 1: /* $Id: term_ps.c,v 1.25 2010/07/01 14:23:45 kristaps Exp $ */
1.1 kristaps 2: /*
1.10 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
1.4 kristaps 21: #include <sys/param.h>
22:
1.2 kristaps 23: #include <assert.h>
1.4 kristaps 24: #include <stdarg.h>
1.17 kristaps 25: #include <stdint.h>
1.2 kristaps 26: #include <stdio.h>
1.1 kristaps 27: #include <stdlib.h>
1.4 kristaps 28: #include <string.h>
1.13 kristaps 29: #include <time.h>
1.26 ! kristaps 30: #include <unistd.h>
1.1 kristaps 31:
32: #include "out.h"
33: #include "main.h"
34: #include "term.h"
35:
1.21 kristaps 36: /* Convert PostScript point "x" to an AFM unit. */
1.25 kristaps 37: #define PNT2AFM(p, x) /* LINTED */ \
1.21 kristaps 38: (size_t)((double)(x) * (1000.0 / (double)(p)->engine.ps.scale))
39:
40: /* Convert an AFM unit "x" to a PostScript points */
1.25 kristaps 41: #define AFM2PNT(p, x) /* LINTED */ \
1.21 kristaps 42: (size_t)((double)(x) / (1000.0 / (double)(p)->engine.ps.scale))
43:
1.13 kristaps 44: struct glyph {
1.25 kristaps 45: size_t wx; /* WX in AFM */
1.13 kristaps 46: };
47:
48: struct font {
49: const char *name; /* FontName in AFM */
1.15 kristaps 50: #define MAXCHAR 95 /* total characters we can handle */
1.13 kristaps 51: struct glyph gly[MAXCHAR]; /* glyph metrics */
52: };
53:
54: /*
55: * We define, for the time being, three fonts: bold, oblique/italic, and
56: * normal (roman). The following table hard-codes the font metrics for
57: * ASCII, i.e., 32--127.
58: */
59:
1.16 kristaps 60: static const struct font fonts[TERMFONT__MAX] = {
1.24 kristaps 61: { "Times-Roman", {
62: { 250 },
63: { 333 },
64: { 408 },
65: { 500 },
66: { 500 },
67: { 833 },
68: { 778 },
69: { 333 },
70: { 333 },
71: { 333 },
72: { 500 },
73: { 564 },
74: { 250 },
75: { 333 },
76: { 250 },
77: { 278 },
78: { 500 },
79: { 500 },
80: { 500 },
81: { 500 },
82: { 500 },
83: { 500 },
84: { 500 },
85: { 500 },
86: { 500 },
87: { 500 },
88: { 278 },
89: { 278 },
90: { 564 },
91: { 564 },
92: { 564 },
93: { 444 },
94: { 921 },
95: { 722 },
96: { 667 },
97: { 667 },
98: { 722 },
99: { 611 },
100: { 556 },
101: { 722 },
102: { 722 },
103: { 333 },
104: { 389 },
105: { 722 },
106: { 611 },
107: { 889 },
108: { 722 },
109: { 722 },
110: { 556 },
111: { 722 },
112: { 667 },
113: { 556 },
114: { 611 },
115: { 722 },
116: { 722 },
117: { 944 },
118: { 722 },
119: { 722 },
120: { 611 },
121: { 333 },
122: { 278 },
123: { 333 },
124: { 469 },
125: { 500 },
126: { 333 },
127: { 444 },
128: { 500 },
129: { 444 },
130: { 500},
131: { 444},
132: { 333},
133: { 500},
134: { 500},
135: { 278},
136: { 278},
137: { 500},
138: { 278},
139: { 778},
140: { 500},
141: { 500},
142: { 500},
143: { 500},
144: { 333},
145: { 389},
146: { 278},
147: { 500},
148: { 500},
149: { 722},
150: { 500},
151: { 500},
152: { 444},
153: { 480},
154: { 200},
155: { 480},
156: { 541},
157: } },
158: { "Times-Bold", {
159: { 250 },
160: { 333 },
161: { 555 },
162: { 500 },
163: { 500 },
164: { 1000 },
165: { 833 },
166: { 333 },
167: { 333 },
168: { 333 },
169: { 500 },
170: { 570 },
171: { 250 },
172: { 333 },
173: { 250 },
174: { 278 },
175: { 500 },
176: { 500 },
177: { 500 },
178: { 500 },
179: { 500 },
180: { 500 },
181: { 500 },
182: { 500 },
183: { 500 },
184: { 500 },
185: { 333 },
186: { 333 },
187: { 570 },
188: { 570 },
189: { 570 },
190: { 500 },
191: { 930 },
192: { 722 },
193: { 667 },
194: { 722 },
195: { 722 },
196: { 667 },
197: { 611 },
198: { 778 },
199: { 778 },
200: { 389 },
201: { 500 },
202: { 778 },
203: { 667 },
204: { 944 },
205: { 722 },
206: { 778 },
207: { 611 },
208: { 778 },
209: { 722 },
210: { 556 },
211: { 667 },
212: { 722 },
213: { 722 },
214: { 1000 },
215: { 722 },
216: { 722 },
217: { 667 },
218: { 333 },
219: { 278 },
220: { 333 },
221: { 581 },
222: { 500 },
223: { 333 },
224: { 500 },
225: { 556 },
226: { 444 },
1.22 kristaps 227: { 556 },
1.24 kristaps 228: { 444 },
229: { 333 },
1.22 kristaps 230: { 500 },
1.24 kristaps 231: { 556 },
1.22 kristaps 232: { 278 },
1.24 kristaps 233: { 333 },
234: { 556 },
1.22 kristaps 235: { 278 },
1.24 kristaps 236: { 833 },
1.22 kristaps 237: { 556 },
1.24 kristaps 238: { 500 },
1.22 kristaps 239: { 556 },
240: { 556 },
241: { 444 },
1.24 kristaps 242: { 389 },
243: { 333 },
1.22 kristaps 244: { 556 },
245: { 500 },
1.24 kristaps 246: { 722 },
247: { 500 },
1.22 kristaps 248: { 500 },
1.24 kristaps 249: { 444 },
250: { 394 },
251: { 220 },
252: { 394 },
253: { 520 },
1.13 kristaps 254: } },
1.24 kristaps 255: { "Times-Italic", {
256: { 250 },
257: { 333 },
258: { 420 },
259: { 500 },
260: { 500 },
261: { 833 },
262: { 778 },
263: { 333 },
264: { 333 },
265: { 333 },
266: { 500 },
267: { 675 },
268: { 250 },
269: { 333 },
270: { 250 },
271: { 278 },
272: { 500 },
273: { 500 },
274: { 500 },
275: { 500 },
276: { 500 },
277: { 500 },
278: { 500 },
279: { 500 },
280: { 500 },
281: { 500 },
282: { 333 },
283: { 333 },
284: { 675 },
285: { 675 },
286: { 675 },
287: { 500 },
288: { 920 },
289: { 611 },
290: { 611 },
291: { 667 },
292: { 722 },
293: { 611 },
294: { 611 },
295: { 722 },
296: { 722 },
297: { 333 },
298: { 444 },
299: { 667 },
300: { 556 },
301: { 833 },
302: { 667 },
303: { 722 },
304: { 611 },
305: { 722 },
306: { 611 },
307: { 500 },
308: { 556 },
309: { 722 },
310: { 611 },
311: { 833 },
312: { 611 },
313: { 556 },
314: { 556 },
315: { 389 },
316: { 278 },
317: { 389 },
318: { 422 },
319: { 500 },
320: { 333 },
321: { 500 },
322: { 500 },
323: { 444 },
1.22 kristaps 324: { 500 },
1.24 kristaps 325: { 444 },
326: { 278 },
1.22 kristaps 327: { 500 },
328: { 500 },
329: { 278 },
1.24 kristaps 330: { 278 },
331: { 444 },
332: { 278 },
333: { 722 },
334: { 500 },
335: { 500 },
336: { 500 },
1.22 kristaps 337: { 500 },
1.24 kristaps 338: { 389 },
339: { 389 },
1.22 kristaps 340: { 278 },
341: { 500 },
1.24 kristaps 342: { 444 },
343: { 667 },
344: { 444 },
345: { 444 },
346: { 389 },
347: { 400 },
1.22 kristaps 348: { 275 },
1.24 kristaps 349: { 400 },
350: { 541 },
1.13 kristaps 351: } },
352: };
353:
1.15 kristaps 354: /* These work the buffer used by the header and footer. */
1.4 kristaps 355: #define PS_BUFSLOP 128
356: #define PS_GROWBUF(p, sz) \
357: do if ((p)->engine.ps.psmargcur + (sz) > \
358: (p)->engine.ps.psmargsz) { \
359: (p)->engine.ps.psmargsz += /* CONSTCOND */ \
360: MAX(PS_BUFSLOP, (sz)); \
361: (p)->engine.ps.psmarg = realloc \
362: ((p)->engine.ps.psmarg, \
363: (p)->engine.ps.psmargsz); \
364: if (NULL == (p)->engine.ps.psmarg) { \
365: perror(NULL); \
366: exit(EXIT_FAILURE); \
367: } \
368: } while (/* CONSTCOND */ 0)
369:
1.9 kristaps 370:
1.20 kristaps 371: static double ps_hspan(const struct termp *,
1.19 kristaps 372: const struct roffsu *);
373: static size_t ps_width(const struct termp *, char);
374: static void ps_advance(struct termp *, size_t);
1.2 kristaps 375: static void ps_begin(struct termp *);
376: static void ps_end(struct termp *);
377: static void ps_endline(struct termp *);
1.9 kristaps 378: static void ps_fclose(struct termp *);
1.19 kristaps 379: static void ps_letter(struct termp *, char);
1.9 kristaps 380: static void ps_pclose(struct termp *);
1.13 kristaps 381: static void ps_pletter(struct termp *, int);
1.4 kristaps 382: static void ps_printf(struct termp *, const char *, ...);
383: static void ps_putchar(struct termp *, char);
1.9 kristaps 384: static void ps_setfont(struct termp *, enum termfont);
1.2 kristaps 385:
386:
1.1 kristaps 387: void *
1.17 kristaps 388: ps_alloc(char *outopts)
1.1 kristaps 389: {
390: struct termp *p;
1.18 kristaps 391: size_t pagex, pagey, margin, lineheight;
1.17 kristaps 392: const char *toks[2];
1.25 kristaps 393: const char *pp;
1.17 kristaps 394: char *v;
1.1 kristaps 395:
396: if (NULL == (p = term_alloc(TERMENC_ASCII)))
397: return(NULL);
398:
1.19 kristaps 399: p->advance = ps_advance;
1.2 kristaps 400: p->begin = ps_begin;
401: p->end = ps_end;
402: p->endline = ps_endline;
1.19 kristaps 403: p->hspan = ps_hspan;
404: p->letter = ps_letter;
405: p->type = TERMTYPE_PS;
1.11 kristaps 406: p->width = ps_width;
1.21 kristaps 407:
1.25 kristaps 408: p->engine.ps.scale = 11;
1.17 kristaps 409:
410: toks[0] = "paper";
411: toks[1] = NULL;
412:
1.25 kristaps 413: pp = NULL;
1.19 kristaps 414:
1.17 kristaps 415: while (outopts && *outopts)
416: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
417: case (0):
1.25 kristaps 418: pp = v;
1.17 kristaps 419: break;
420: default:
421: break;
422: }
1.16 kristaps 423:
1.21 kristaps 424: margin = PNT2AFM(p, 72);
425: lineheight = PNT2AFM(p, 12);
426:
1.25 kristaps 427: /* Default to US letter (millimetres). */
428:
429: pagex = 216;
430: pagey = 279;
431:
432: /*
433: * The ISO-269 paper sizes can be calculated automatically, but
434: * it would require bringing in -lm for pow() and I'd rather not
435: * do that. So just do it the easy way for now. Since this
436: * only happens once, I'm not terribly concerned.
437: */
438:
439: if (pp && strcasecmp(pp, "letter")) {
440: if (0 == strcasecmp(pp, "a3")) {
441: pagex = 297;
442: pagey = 420;
443: } else if (0 == strcasecmp(pp, "a4")) {
444: pagex = 210;
445: pagey = 297;
446: } else if (0 == strcasecmp(pp, "a5")) {
447: pagex = 148;
448: pagey = 210;
449: } else if (0 == strcasecmp(pp, "legal")) {
450: pagex = 216;
451: pagey = 356;
452: } else if (2 != sscanf(pp, "%zux%zu", &pagex, &pagey))
453: fprintf(stderr, "%s: Unknown paper\n", pp);
1.18 kristaps 454: }
455:
1.25 kristaps 456: /* Remember millimetres -> AFM units. */
457:
458: pagex = PNT2AFM(p, ((double)pagex * 2.834));
459: pagey = PNT2AFM(p, ((double)pagey * 2.834));
460:
1.16 kristaps 461: assert(margin * 2 < pagex);
462: assert(margin * 2 < pagey);
463:
464: p->engine.ps.width = pagex;
465: p->engine.ps.height = pagey;
466: p->engine.ps.header = pagey - (margin / 2);
467: p->engine.ps.top = pagey - margin;
468: p->engine.ps.footer = (margin / 2);
469: p->engine.ps.bottom = margin;
470: p->engine.ps.left = margin;
1.18 kristaps 471: p->engine.ps.lineheight = lineheight;
1.16 kristaps 472:
473: p->defrmargin = pagex - (margin * 2);
1.1 kristaps 474: return(p);
475: }
476:
477:
478: void
479: ps_free(void *arg)
480: {
1.4 kristaps 481: struct termp *p;
482:
483: p = (struct termp *)arg;
484:
485: if (p->engine.ps.psmarg)
486: free(p->engine.ps.psmarg);
487:
488: term_free(p);
489: }
490:
491:
492: static void
493: ps_printf(struct termp *p, const char *fmt, ...)
494: {
495: va_list ap;
496: int pos;
497:
498: va_start(ap, fmt);
499:
500: /*
501: * If we're running in regular mode, then pipe directly into
502: * vprintf(). If we're processing margins, then push the data
503: * into our growable margin buffer.
504: */
1.1 kristaps 505:
1.4 kristaps 506: if ( ! (PS_MARGINS & p->engine.ps.psstate)) {
507: vprintf(fmt, ap);
508: va_end(ap);
509: return;
510: }
511:
512: /*
513: * XXX: I assume that the in-margin print won't exceed
514: * PS_BUFSLOP (128 bytes), which is reasonable but still an
515: * assumption that will cause pukeage if it's not the case.
516: */
517:
518: PS_GROWBUF(p, PS_BUFSLOP);
519:
520: pos = (int)p->engine.ps.psmargcur;
521: vsnprintf(&p->engine.ps.psmarg[pos], PS_BUFSLOP, fmt, ap);
522: p->engine.ps.psmargcur = strlen(p->engine.ps.psmarg);
1.5 kristaps 523:
524: va_end(ap);
1.4 kristaps 525: }
526:
527:
528: static void
529: ps_putchar(struct termp *p, char c)
530: {
531: int pos;
532:
533: /* See ps_printf(). */
534:
535: if ( ! (PS_MARGINS & p->engine.ps.psstate)) {
536: putchar(c);
537: return;
538: }
539:
540: PS_GROWBUF(p, 2);
541:
542: pos = (int)p->engine.ps.psmargcur++;
1.5 kristaps 543: p->engine.ps.psmarg[pos++] = c;
1.4 kristaps 544: p->engine.ps.psmarg[pos] = '\0';
1.2 kristaps 545: }
546:
547:
1.3 kristaps 548: /* ARGSUSED */
1.2 kristaps 549: static void
550: ps_end(struct termp *p)
551: {
552:
1.4 kristaps 553: /*
554: * At the end of the file, do one last showpage. This is the
555: * same behaviour as groff(1) and works for multiple pages as
556: * well as just one.
557: */
558:
1.8 kristaps 559: assert(0 == p->engine.ps.psstate);
560: assert('\0' == p->engine.ps.last);
1.4 kristaps 561: assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
562: printf("%s", p->engine.ps.psmarg);
1.16 kristaps 563: p->engine.ps.pages++;
1.4 kristaps 564: printf("showpage\n");
1.16 kristaps 565:
566: printf("%%%%Trailer\n");
567: printf("%%%%Pages: %zu\n", p->engine.ps.pages);
568: printf("%%%%EOF\n");
1.2 kristaps 569: }
570:
571:
572: static void
573: ps_begin(struct termp *p)
574: {
1.13 kristaps 575: time_t t;
1.16 kristaps 576: int i;
1.2 kristaps 577:
1.9 kristaps 578: /*
579: * Print margins into margin buffer. Nothing gets output to the
580: * screen yet, so we don't need to initialise the primary state.
1.2 kristaps 581: */
582:
1.4 kristaps 583: if (p->engine.ps.psmarg) {
584: assert(p->engine.ps.psmargsz);
585: p->engine.ps.psmarg[0] = '\0';
586: }
587:
588: p->engine.ps.psmargcur = 0;
1.9 kristaps 589: p->engine.ps.psstate = PS_MARGINS;
1.16 kristaps 590: p->engine.ps.pscol = p->engine.ps.left;
591: p->engine.ps.psrow = p->engine.ps.header;
1.4 kristaps 592:
1.9 kristaps 593: ps_setfont(p, TERMFONT_NONE);
1.4 kristaps 594:
595: (*p->headf)(p, p->argf);
596: (*p->endline)(p);
597:
1.16 kristaps 598: p->engine.ps.pscol = p->engine.ps.left;
599: p->engine.ps.psrow = p->engine.ps.footer;
1.4 kristaps 600:
601: (*p->footf)(p, p->argf);
602: (*p->endline)(p);
603:
604: p->engine.ps.psstate &= ~PS_MARGINS;
1.9 kristaps 605:
1.4 kristaps 606: assert(0 == p->engine.ps.psstate);
1.9 kristaps 607: assert(p->engine.ps.psmarg);
608: assert('\0' != p->engine.ps.psmarg[0]);
609:
610: /*
611: * Print header and initialise page state. Following this,
612: * stuff gets printed to the screen, so make sure we're sane.
613: */
1.4 kristaps 614:
1.13 kristaps 615: t = time(NULL);
616:
1.16 kristaps 617: printf("%%!PS-Adobe-3.0\n");
1.13 kristaps 618: printf("%%%%Creator: mandoc-%s\n", VERSION);
619: printf("%%%%CreationDate: %s", ctime(&t));
1.16 kristaps 620: printf("%%%%DocumentData: Clean7Bit\n");
621: printf("%%%%Orientation: Portrait\n");
622: printf("%%%%Pages: (atend)\n");
1.13 kristaps 623: printf("%%%%PageOrder: Ascend\n");
1.16 kristaps 624: printf("%%%%DocumentMedia: Default %zu %zu 0 () ()\n",
1.23 kristaps 625: AFM2PNT(p, p->engine.ps.width),
626: AFM2PNT(p, p->engine.ps.height));
1.16 kristaps 627: printf("%%%%DocumentNeededResources: font");
628: for (i = 0; i < (int)TERMFONT__MAX; i++)
629: printf(" %s", fonts[i].name);
630: printf("\n%%%%EndComments\n");
631:
632: printf("%%%%Page: %zu %zu\n",
633: p->engine.ps.pages + 1,
634: p->engine.ps.pages + 1);
1.13 kristaps 635:
1.9 kristaps 636: ps_setfont(p, TERMFONT_NONE);
1.16 kristaps 637: p->engine.ps.pscol = p->engine.ps.left;
638: p->engine.ps.psrow = p->engine.ps.top;
1.2 kristaps 639: }
640:
641:
642: static void
1.13 kristaps 643: ps_pletter(struct termp *p, int c)
1.2 kristaps 644: {
1.14 kristaps 645: int f;
1.2 kristaps 646:
1.9 kristaps 647: /*
648: * If we're not in a PostScript "word" context, then open one
649: * now at the current cursor.
650: */
651:
1.2 kristaps 652: if ( ! (PS_INLINE & p->engine.ps.psstate)) {
1.4 kristaps 653: ps_printf(p, "%zu %zu moveto\n(",
1.21 kristaps 654: AFM2PNT(p, p->engine.ps.pscol),
655: AFM2PNT(p, p->engine.ps.psrow));
1.2 kristaps 656: p->engine.ps.psstate |= PS_INLINE;
657: }
658:
659: /*
660: * We need to escape these characters as per the PostScript
661: * specification. We would also escape non-graphable characters
662: * (like tabs), but none of them would get to this point and
663: * it's superfluous to abort() on them.
664: */
665:
666: switch (c) {
667: case ('('):
668: /* FALLTHROUGH */
669: case (')'):
670: /* FALLTHROUGH */
671: case ('\\'):
1.4 kristaps 672: ps_putchar(p, '\\');
1.2 kristaps 673: break;
674: default:
675: break;
676: }
677:
678: /* Write the character and adjust where we are on the page. */
1.9 kristaps 679:
1.14 kristaps 680: f = (int)p->engine.ps.lastf;
1.13 kristaps 681:
1.14 kristaps 682: if (c <= 32 || (c - 32 > MAXCHAR)) {
1.13 kristaps 683: ps_putchar(p, ' ');
1.18 kristaps 684: p->engine.ps.pscol += fonts[f].gly[0].wx;
1.13 kristaps 685: return;
686: }
687:
1.25 kristaps 688: ps_putchar(p, (char)c);
1.14 kristaps 689: c -= 32;
1.18 kristaps 690: p->engine.ps.pscol += fonts[f].gly[c].wx;
1.2 kristaps 691: }
692:
693:
694: static void
1.9 kristaps 695: ps_pclose(struct termp *p)
696: {
697:
698: /*
699: * Spit out that we're exiting a word context (this is a
700: * "partial close" because we don't check the last-char buffer
701: * or anything).
702: */
703:
704: if ( ! (PS_INLINE & p->engine.ps.psstate))
705: return;
706:
707: ps_printf(p, ") show\n");
708: p->engine.ps.psstate &= ~PS_INLINE;
709: }
710:
711:
712: static void
713: ps_fclose(struct termp *p)
714: {
715:
716: /*
717: * Strong closure: if we have a last-char, spit it out after
718: * checking that we're in the right font mode. This will of
719: * course open a new scope, if applicable.
720: *
721: * Following this, close out any scope that's open.
722: */
723:
724: if ('\0' != p->engine.ps.last) {
725: if (p->engine.ps.lastf != TERMFONT_NONE) {
726: ps_pclose(p);
727: ps_setfont(p, TERMFONT_NONE);
728: }
729: ps_pletter(p, p->engine.ps.last);
730: p->engine.ps.last = '\0';
731: }
732:
733: if ( ! (PS_INLINE & p->engine.ps.psstate))
734: return;
735:
736: ps_pclose(p);
737: }
738:
739:
740: static void
1.8 kristaps 741: ps_letter(struct termp *p, char c)
742: {
743: char cc;
1.9 kristaps 744:
745: /*
746: * State machine dictates whether to buffer the last character
747: * or not. Basically, encoded words are detected by checking if
748: * we're an "8" and switching on the buffer. Then we put "8" in
749: * our buffer, and on the next charater, flush both character
750: * and buffer. Thus, "regular" words are detected by having a
751: * regular character and a regular buffer character.
752: */
753:
1.8 kristaps 754: if ('\0' == p->engine.ps.last) {
755: assert(8 != c);
756: p->engine.ps.last = c;
757: return;
758: } else if (8 == p->engine.ps.last) {
759: assert(8 != c);
1.9 kristaps 760: p->engine.ps.last = '\0';
1.8 kristaps 761: } else if (8 == c) {
762: assert(8 != p->engine.ps.last);
1.9 kristaps 763: if ('_' == p->engine.ps.last) {
764: if (p->engine.ps.lastf != TERMFONT_UNDER) {
765: ps_pclose(p);
766: ps_setfont(p, TERMFONT_UNDER);
767: }
768: } else if (p->engine.ps.lastf != TERMFONT_BOLD) {
769: ps_pclose(p);
770: ps_setfont(p, TERMFONT_BOLD);
771: }
1.8 kristaps 772: p->engine.ps.last = c;
773: return;
774: } else {
1.9 kristaps 775: if (p->engine.ps.lastf != TERMFONT_NONE) {
776: ps_pclose(p);
777: ps_setfont(p, TERMFONT_NONE);
778: }
1.8 kristaps 779: cc = p->engine.ps.last;
780: p->engine.ps.last = c;
781: c = cc;
782: }
783:
1.9 kristaps 784: ps_pletter(p, c);
1.8 kristaps 785: }
786:
787:
788: static void
1.2 kristaps 789: ps_advance(struct termp *p, size_t len)
790: {
791:
1.9 kristaps 792: /*
793: * Advance some spaces. This can probably be made smarter,
794: * i.e., to have multiple space-separated words in the same
795: * scope, but this is easier: just close out the current scope
796: * and readjust our column settings.
797: */
1.8 kristaps 798:
1.9 kristaps 799: ps_fclose(p);
1.14 kristaps 800: p->engine.ps.pscol += len;
1.2 kristaps 801: }
802:
803:
804: static void
805: ps_endline(struct termp *p)
806: {
1.8 kristaps 807:
1.9 kristaps 808: /* Close out any scopes we have open: we're at eoln. */
809:
810: ps_fclose(p);
1.2 kristaps 811:
1.9 kristaps 812: /*
813: * If we're in the margin, don't try to recalculate our current
814: * row. XXX: if the column tries to be fancy with multiple
815: * lines, we'll do nasty stuff.
816: */
1.2 kristaps 817:
818: if (PS_MARGINS & p->engine.ps.psstate)
819: return;
820:
1.9 kristaps 821: /*
822: * Put us down a line. If we're at the page bottom, spit out a
823: * showpage and restart our row.
824: */
825:
1.16 kristaps 826: p->engine.ps.pscol = p->engine.ps.left;
827: if (p->engine.ps.psrow >= p->engine.ps.lineheight +
828: p->engine.ps.bottom) {
829: p->engine.ps.psrow -= p->engine.ps.lineheight;
1.2 kristaps 830: return;
831: }
832:
1.4 kristaps 833: assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
834: printf("%s", p->engine.ps.psmarg);
1.23 kristaps 835: printf("showpage\n");
836: p->engine.ps.pages++;
1.16 kristaps 837: printf("%%%%Page: %zu %zu\n",
838: p->engine.ps.pages + 1,
839: p->engine.ps.pages + 1);
840: p->engine.ps.psrow = p->engine.ps.top;
1.1 kristaps 841: }
1.9 kristaps 842:
843:
844: static void
845: ps_setfont(struct termp *p, enum termfont f)
846: {
847:
1.16 kristaps 848: assert(f < TERMFONT__MAX);
1.21 kristaps 849: ps_printf(p, "/%s %zu selectfont\n",
850: fonts[(int)f].name, p->engine.ps.scale);
1.9 kristaps 851: p->engine.ps.lastf = f;
852: }
853:
1.11 kristaps 854:
1.12 kristaps 855: /* ARGSUSED */
1.11 kristaps 856: static size_t
857: ps_width(const struct termp *p, char c)
858: {
859:
1.14 kristaps 860: if (c <= 32 || c - 32 >= MAXCHAR)
1.18 kristaps 861: return(fonts[(int)TERMFONT_NONE].gly[0].wx);
1.14 kristaps 862:
863: c -= 32;
1.18 kristaps 864: return(fonts[(int)TERMFONT_NONE].gly[(int)c].wx);
1.11 kristaps 865: }
1.19 kristaps 866:
867:
1.20 kristaps 868: static double
1.19 kristaps 869: ps_hspan(const struct termp *p, const struct roffsu *su)
870: {
871: double r;
872:
873: /*
874: * All of these measurements are derived by converting from the
1.21 kristaps 875: * native measurement to AFM units.
1.19 kristaps 876: */
877:
878: switch (su->unit) {
879: case (SCALE_CM):
1.21 kristaps 880: r = PNT2AFM(p, su->scale * 28.34);
1.19 kristaps 881: break;
882: case (SCALE_IN):
1.21 kristaps 883: r = PNT2AFM(p, su->scale * 72);
1.19 kristaps 884: break;
885: case (SCALE_PC):
1.21 kristaps 886: r = PNT2AFM(p, su->scale * 12);
1.19 kristaps 887: break;
888: case (SCALE_PT):
1.21 kristaps 889: r = PNT2AFM(p, su->scale * 100);
1.19 kristaps 890: break;
891: case (SCALE_EM):
892: r = su->scale *
893: fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
894: break;
895: case (SCALE_MM):
1.21 kristaps 896: r = PNT2AFM(p, su->scale * 2.834);
1.19 kristaps 897: break;
898: case (SCALE_EN):
899: r = su->scale *
900: fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
901: break;
902: case (SCALE_VS):
903: r = su->scale * p->engine.ps.lineheight;
904: break;
905: default:
906: r = su->scale;
907: break;
908: }
909:
1.20 kristaps 910: return(r);
1.19 kristaps 911: }
912: