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Handle non utf8 paths
[llpp.git] / link.c
blob70e10d2afad2fb52e219396b84313ce00c753d65
1 /* lots of code c&p-ed directly from mupdf */
2 #include <errno.h>
3 #include <stdio.h>
4 #include <ctype.h>
5 #include <string.h>
6 #include <stdlib.h>
7 #include <signal.h>
8 #include <wchar.h>
9
10 #include <unistd.h>
11 #include <pthread.h>
12 #include <sys/time.h>
13 #include <sys/types.h>
14 #include <sys/ioctl.h>
15
16 #ifdef __CYGWIN__
17 #include <cygwin/socket.h> /* FIONREAD */
18 #else
19 #include <spawn.h>
20 #endif
21
22 #include <regex.h>
23 #include <ctype.h>
24 #include <stdarg.h>
25 #include <limits.h>
26
27 #include <GL/gl.h>
28
29 #include <caml/fail.h>
30 #include <caml/alloc.h>
31 #include <caml/memory.h>
32 #include <caml/unixsupport.h>
33
34 #include <fitz.h>
35 #include <mupdf.h>
36 #include <mupdf-internal.h>
37 #include <muxps.h>
38 #include <muxps-internal.h>
39 #include <mucbz.h>
40
41 #include FT_FREETYPE_H
42
43 #define PIGGYBACK
44
45 #ifndef __USE_GNU
46 extern char **environ;
47 #endif
48
49 #define MIN(a,b) ((a) < (b) ? (a) : (b))
50 #define MAX(a,b) ((a) > (b) ? (a) : (b))
51
52 #if defined __GNUC__
53 #define NORETURN_ATTR __attribute__ ((noreturn))
54 #define UNUSED_ATTR __attribute__ ((unused))
55 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
56 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
57 #else
58 #define NORETURN_ATTR
59 #define UNUSED_ATTR
60 #define OPTIMIZE_ATTR(n)
61 #define GCC_FMT_ATTR(a, b)
62 #endif
63
64 #define FMT_s "zu"
65
66 #define FMT_ptr "p"
67 #define FMT_ptr_cast(p) (p)
68 #define FMT_ptr_cast2(p) (p)
69
70 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
71 err (int exitcode, const char *fmt, ...)
72 {
73 va_list ap;
74 int savederrno;
75
76 savederrno = errno;
77 va_start (ap, fmt);
78 vfprintf (stderr, fmt, ap);
79 va_end (ap);
80 fprintf (stderr, ": %s\n", strerror (savederrno));
81 fflush (stderr);
82 _exit (exitcode);
83 }
84
85 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
86 errx (int exitcode, const char *fmt, ...)
87 {
88 va_list ap;
89
90 va_start (ap, fmt);
91 vfprintf (stderr, fmt, ap);
92 va_end (ap);
93 fputc ('\n', stderr);
94 fflush (stderr);
95 _exit (exitcode);
96 }
97
98 #ifndef GL_TEXTURE_RECTANGLE_ARB
99 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
100 #endif
101
102 #ifndef GL_BGRA
103 #define GL_BGRA 0x80E1
104 #endif
105
106 #ifndef GL_UNSIGNED_INT_8_8_8_8
107 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
108 #endif
109
110 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
111 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
112 #endif
113
114 #if 0
115 #define lprintf printf
116 #else
117 #define lprintf(...)
118 #endif
119
120 #define ARSERT(cond) for (;;) { \
121 if (!(cond)) { \
122 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
123 } \
124 break; \
125 }
126
127 struct slice {
128 int h;
129 int texindex;
130 };
131
132 struct tile {
133 int x, y, w, h;
134 int slicecount;
135 int sliceheight;
136 fz_pixmap *pixmap;
137 struct slice slices[1];
138 };
139
140 struct pagedim {
141 int pageno;
142 int rotate;
143 int left;
144 int tctmready;
145 fz_bbox bounds;
146 fz_rect pagebox;
147 fz_rect mediabox;
148 fz_matrix ctm, zoomctm, lctm, tctm;
149 };
150
151 struct slink {
152 fz_bbox bbox;
153 fz_link *link;
154 };
155
156 enum { DPDF, DXPS, DCBZ };
157
158 struct page {
159 int tgen;
160 int sgen;
161 int type;
162 int pageno;
163 int pdimno;
164 fz_text_page *text;
165 fz_text_sheet *sheet;
166 union {
167 void *ptr;
168 pdf_page *pdfpage;
169 xps_page *xpspage;
170 cbz_page *cbzpage;
171 } u;
172 fz_display_list *dlist;
173 int slinkcount;
174 struct slink *slinks;
175 struct mark {
176 int i;
177 fz_text_span *span;
178 } fmark, lmark;
179 void (*freepage) (void *);
180 };
181
182 struct {
183 int type;
184 int sliceheight;
185 struct pagedim *pagedims;
186 int pagecount;
187 int pagedimcount;
188 union {
189 pdf_document *pdf;
190 xps_document *xps;
191 cbz_document *cbz;
192 } u;
193 fz_context *ctx;
194 int w, h;
195
196 int texindex;
197 int texcount;
198 GLuint *texids;
199
200 GLenum texiform;
201 GLenum texform;
202 GLenum texty;
203
204 fz_colorspace *colorspace;
205
206 struct {
207 int w, h;
208 struct slice *slice;
209 } *texowners;
210
211 int rotate;
212 int proportional;
213 int trimmargins;
214 int needoutline;
215 int gen;
216 int aalevel;
217
218 int trimanew;
219 fz_bbox trimfuzz;
220 fz_pixmap *pig;
221
222 pthread_t thread;
223 int cr, cw;
224 FT_Face face;
225
226 void (*closedoc) (void);
227 void (*freepage) (void *);
228
229 char *trimcachepath;
230 } state;
231
232 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
233 {
234 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
235 }
236
237 static void UNUSED_ATTR debug_bbox (const char *cap, fz_bbox r)
238 {
239 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
240 }
241
242 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
243 {
244 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
245 m.a, m.b, m.c, m.d, m.e, m.f);
246 }
247
248 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
249
250 static void lock (const char *cap)
251 {
252 int ret = pthread_mutex_lock (&mutex);
253 if (ret) {
254 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
255 }
256 }
257
258 static void unlock (const char *cap)
259 {
260 int ret = pthread_mutex_unlock (&mutex);
261 if (ret) {
262 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
263 }
264 }
265
266 static int trylock (const char *cap)
267 {
268 int ret = pthread_mutex_trylock (&mutex);
269 if (ret && ret != EBUSY) {
270 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
271 }
272 return ret == EBUSY;
273 }
274
275 static void *parse_pointer (const char *cap, const char *s)
276 {
277 int ret;
278 void *ptr;
279
280 ret = sscanf (s, "%" FMT_ptr, FMT_ptr_cast (&ptr));
281 if (ret != 1) {
282 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
283 }
284 return ptr;
285 }
286
287 static double now (void)
288 {
289 struct timeval tv;
290
291 if (gettimeofday (&tv, NULL)) {
292 err (1, "gettimeofday");
293 }
294 return tv.tv_sec + tv.tv_usec*1e-6;
295 }
296
297 static int hasdata (void)
298 {
299 int ret, avail;
300 ret = ioctl (state.cr, FIONREAD, &avail);
301 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
302 return avail > 0;
303 }
304
305 CAMLprim value ml_hasdata (value fd_v)
306 {
307 CAMLparam1 (fd_v);
308 int ret, avail;
309
310 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
311 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
312 CAMLreturn (Val_bool (avail > 0));
313 }
314
315 static void readdata (void *p, int size)
316 {
317 ssize_t n;
318
319 again:
320 n = read (state.cr, p, size);
321 if (n < 0) {
322 if (errno == EINTR) goto again;
323 err (1, "read (req %d, ret %zd)", size, n);
324 }
325 if (n - size) {
326 if (!n) errx (1, "EOF while reading");
327 errx (1, "read (req %d, ret %zd)", size, n);
328 }
329 }
330
331 static void writedata (char *p, int size)
332 {
333 char buf[4];
334 ssize_t n;
335
336 buf[0] = (size >> 24) & 0xff;
337 buf[1] = (size >> 16) & 0xff;
338 buf[2] = (size >> 8) & 0xff;
339 buf[3] = (size >> 0) & 0xff;
340
341 n = write (state.cw, buf, 4);
342 if (n != 4) {
343 if (!n) errx (1, "EOF while writing length");
344 err (1, "write %zd", n);
345 }
346
347 n = write (state.cw, p, size);
348 if (n - size) {
349 if (!n) errx (1, "EOF while writing data");
350 err (1, "write (req %d, ret %zd)", size, n);
351 }
352 }
353
354 static int readlen (void)
355 {
356 unsigned char p[4];
357
358 readdata (p, 4);
359 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
360 }
361
362 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
363 {
364 int size = 200, len;
365 va_list ap;
366 char *buf;
367
368 buf = malloc (size);
369 for (;;) {
370 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
371
372 va_start (ap, fmt);
373 len = vsnprintf (buf, size, fmt, ap);
374 va_end (ap);
375
376 if (len > -1 && len < size) {
377 writedata (buf, len);
378 break;
379 }
380
381 if (len > -1) {
382 size = len + 1;
383 }
384 else {
385 size *= 2;
386 }
387 buf = realloc (buf, size);
388 }
389 free (buf);
390 }
391
392 static void closepdf (void)
393 {
394 if (state.u.pdf) {
395 pdf_close_document (state.u.pdf);
396 state.u.pdf = NULL;
397 }
398 }
399
400 static void closexps (void)
401 {
402 if (state.u.xps) {
403 xps_close_document (state.u.xps);
404 state.u.xps = NULL;
405 }
406 }
407
408 static void closecbz (void)
409 {
410 if (state.u.cbz) {
411 cbz_close_document (state.u.cbz);
412 state.u.cbz = NULL;
413 }
414 }
415
416 static void freepdfpage (void *ptr)
417 {
418 pdf_free_page (state.u.pdf, ptr);
419 }
420
421 static void freeemptypdfpage (void *ptr)
422 {
423 (void) ptr;
424 }
425
426 static void freexpspage (void *ptr)
427 {
428 xps_free_page (state.u.xps, ptr);
429 }
430
431 static void freecbzpage (void *ptr)
432 {
433 cbz_free_page (state.u.cbz, ptr);
434 }
435
436 static void openxref (char *filename, char *password)
437 {
438 int i, len;
439
440 for (i = 0; i < state.texcount; ++i) {
441 state.texowners[i].w = -1;
442 state.texowners[i].slice = NULL;
443 }
444
445 if (state.closedoc) state.closedoc ();
446
447 len = strlen (filename);
448
449 state.type = DPDF;
450 if (len > 4) {
451 char ext[4];
452
453 ext[0] = tolower ((int) filename[len-3]);
454 ext[1] = tolower ((int) filename[len-2]);
455 ext[2] = tolower ((int) filename[len-1]);
456
457 /**/ if (ext[0] == 'x' && ext[1] == 'p' && ext[2] == 's') {
458 state.type = DXPS;
459 }
460 else if (ext[0] == 'c' && ext[1] == 'b' && ext[2] == 'z') {
461 state.type = DCBZ;
462 }
463 }
464
465 if (state.pagedims) {
466 free (state.pagedims);
467 state.pagedims = NULL;
468 }
469 state.pagedimcount = 0;
470
471 fz_set_aa_level (state.ctx, state.aalevel);
472 switch (state.type) {
473 case DPDF:
474 state.u.pdf = pdf_open_document (state.ctx, filename);
475 if (pdf_needs_password (state.u.pdf)) {
476 int okay = pdf_authenticate_password (state.u.pdf, password);
477 if (!okay) {
478 errx (1, "invalid password");
479 }
480 }
481 state.pagecount = pdf_count_pages (state.u.pdf);
482 state.closedoc = closepdf;
483 state.freepage = freepdfpage;
484 break;
485
486 case DXPS:
487 state.u.xps = xps_open_document (state.ctx, filename);
488 state.pagecount = xps_count_pages (state.u.xps);
489 state.closedoc = closexps;
490 state.freepage = freexpspage;
491 break;
492
493 case DCBZ:
494 state.u.cbz = cbz_open_document (state.ctx, filename);
495 state.pagecount = cbz_count_pages (state.u.cbz);
496 state.closedoc = closecbz;
497 state.freepage = freecbzpage;
498 break;
499 }
500 }
501
502 static void pdfinfo (void)
503 {
504 if (state.type == DPDF) {
505 pdf_obj *infoobj;
506
507 printd ("info PDF version\t%d.%d",
508 state.u.pdf->version / 10, state.u.pdf->version % 10);
509
510 infoobj = pdf_dict_gets (state.u.pdf->trailer, "Info");
511 if (infoobj) {
512 int i;
513 char *s;
514 char *items[] = { "Title", "Author", "Creator",
515 "Producer", "CreationDate" };
516
517 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
518 pdf_obj *obj = pdf_dict_gets (infoobj, items[i]);
519 s = pdf_to_utf8 (state.u.pdf, obj);
520 if (*s) {
521 if (i == 0) {
522 printd ("title %s", s);
523 }
524 printd ("info %s\t%s", items[i], s);
525 }
526 fz_free (state.ctx, s);
527 }
528 }
529 printd ("infoend");
530 }
531 }
532
533 static void unlinktile (struct tile *tile)
534 {
535 int i;
536
537 for (i = 0; i < tile->slicecount; ++i) {
538 struct slice *s = &tile->slices[i];
539
540 if (s->texindex != -1) {
541 if (state.texowners[s->texindex].slice == s) {
542 state.texowners[s->texindex].slice = NULL;
543 }
544 }
545 }
546 }
547
548 static void freepage (struct page *page)
549 {
550 if (page->text) {
551 fz_free_text_page (state.ctx, page->text);
552 }
553 if (page->sheet) {
554 fz_free_text_sheet (state.ctx, page->sheet);
555 }
556 if (page->slinks) {
557 free (page->slinks);
558 }
559 page->freepage (page->u.ptr);
560 fz_free_display_list (state.ctx, page->dlist);
561 free (page);
562 }
563
564 static void freetile (struct tile *tile)
565 {
566 unlinktile (tile);
567 #ifndef PIGGYBACK
568 fz_drop_pixmap (state.ctx, tile->pixmap);
569 #else
570 if (state.pig) {
571 fz_drop_pixmap (state.ctx, state.pig);
572 }
573 state.pig = tile->pixmap;
574 #endif
575 free (tile);
576 }
577
578 #ifdef __ALTIVEC__
579 #include <altivec.h>
580
581 static int cacheline32bytes;
582
583 static void __attribute__ ((constructor)) clcheck (void)
584 {
585 char **envp = environ;
586 unsigned long *auxv;
587
588 while (*envp++);
589
590 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
591 if (*auxv == 19) {
592 cacheline32bytes = auxv[1] == 32;
593 return;
594 }
595 }
596 }
597
598 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
599 {
600 size_t size = pixmap->w * pixmap->h * pixmap->n;
601 if (cacheline32bytes && size > 32) {
602 intptr_t a1, a2, diff;
603 size_t sizea, i;
604 vector unsigned char v = vec_splat_u8 (-1);
605 vector unsigned char *p;
606
607 a1 = a2 = (intptr_t) pixmap->samples;
608 a2 = (a1 + 31) & ~31;
609 diff = a2 - a1;
610 sizea = size - diff;
611 p = (void *) a2;
612
613 while (a1 != a2) *(char *) a1++ = 0xff;
614 for (i = 0; i < (sizea & ~31); i += 32) {
615 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
616 vec_st (v, i, p);
617 vec_st (v, i + 16, p);
618 }
619 while (i < sizea) *((char *) a1 + i++) = 0xff;
620 }
621 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
622 }
623 #else
624 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
625 #endif
626
627 static fz_matrix trimctm (pdf_page *page, int pindex)
628 {
629 fz_matrix ctm;
630 struct pagedim *pdim = &state.pagedims[pindex];
631
632 if (!pdim->tctmready) {
633 if (state.trimmargins) {
634 fz_rect realbox;
635
636 ctm = fz_concat (fz_rotate (-pdim->rotate), fz_scale (1, -1));
637 realbox = fz_transform_rect (ctm, pdim->mediabox);
638 ctm = fz_concat (ctm, fz_translate (-realbox.x0, -realbox.y0));
639 ctm = fz_concat (fz_invert_matrix (page->ctm), ctm);
640 }
641 else {
642 ctm = fz_identity;
643 }
644 pdim->tctm = ctm;
645 pdim->tctmready = 1;
646 }
647 return pdim->tctm;
648 }
649
650 static fz_matrix pagectm (struct page *page)
651 {
652 if (page->type == DPDF) {
653 return fz_concat (trimctm (page->u.pdfpage, page->pdimno),
654 state.pagedims[page->pdimno].ctm);
655 }
656 else {
657 fz_matrix ctm;
658 struct pagedim *pdim = &state.pagedims[page->pdimno];
659
660 ctm = state.pagedims[page->pdimno].ctm;
661 ctm = fz_concat (fz_translate (-pdim->mediabox.x0,
662 -pdim->mediabox.y0), ctm);
663 return ctm;
664 }
665 }
666
667 static void *loadpage (int pageno, int pindex)
668 {
669 fz_device *dev;
670 struct page *page = NULL;
671
672 page = calloc (sizeof (struct page), 1);
673 if (!page) {
674 err (1, "calloc page %d", pageno);
675 }
676
677 page->dlist = fz_new_display_list (state.ctx);
678 dev = fz_new_list_device (state.ctx, page->dlist);
679 switch (state.type) {
680 case DPDF:
681 fz_try (state.ctx) {
682 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
683 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, fz_identity, NULL);
684 page->freepage = freepdfpage;
685 }
686 fz_catch (state.ctx) {
687 page->u.ptr = NULL;
688 page->freepage = freeemptypdfpage;
689 }
690 break;
691
692 case DXPS:
693 page->u.xpspage = xps_load_page (state.u.xps, pageno);
694 xps_run_page (state.u.xps, page->u.xpspage, dev, fz_identity, NULL);
695 page->freepage = freexpspage;
696 break;
697
698 case DCBZ:
699 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
700 cbz_run_page (state.u.cbz, page->u.cbzpage, dev, fz_identity, NULL);
701 page->freepage = freecbzpage;
702 break;
703 }
704 fz_free_device (dev);
705
706 page->pdimno = pindex;
707 page->pageno = pageno;
708 page->sgen = state.gen;
709 page->tgen = state.gen;
710 page->type = state.type;
711
712 return page;
713 }
714
715 static struct tile *alloctile (int h)
716 {
717 int i;
718 int slicecount;
719 size_t tilesize;
720 struct tile *tile;
721
722 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
723 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
724 tile = calloc (tilesize, 1);
725 if (!tile) {
726 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
727 }
728 for (i = 0; i < slicecount; ++i) {
729 int sh = MIN (h, state.sliceheight);
730 tile->slices[i].h = sh;
731 tile->slices[i].texindex = -1;
732 h -= sh;
733 }
734 tile->slicecount = slicecount;
735 tile->sliceheight = state.sliceheight;
736 return tile;
737 }
738
739 #ifdef OBSCURED_OPT
740 struct obs {
741 int cured;
742 fz_bbox b;
743 };
744
745 static void obs_fill_image (fz_device *dev, fz_image *image, fz_matrix ctm,
746 float alpha)
747 {
748 struct obs *obs = dev->user;
749
750 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
751 fz_bbox b = fz_round_rect (fz_transform_rect (ctm, fz_unit_rect));
752 b = fz_intersect_bbox (b, obs->b);
753 obs->cured = b.x0 == obs->b.x0
754 && b.x1 == obs->b.x1
755 && b.y0 == obs->b.y0
756 && b.y1 == obs->b.y1;
757 }
758 }
759
760 static int obscured (struct page *page, fz_bbox bbox)
761 {
762 fz_device dev;
763 struct obs obs;
764
765 memset (&dev, 0, sizeof (dev));
766 memset (&obs, 0, sizeof (obs));
767 dev.hints = 0;
768 dev.flags = 0;
769 dev.user = &obs;
770 dev.ctx = state.ctx;
771 dev.fill_image = obs_fill_image;
772 obs.b = bbox;
773 fz_run_display_list (page->dlist, &dev, pagectm (page), bbox, NULL);
774 return obs.cured;
775 }
776 #define OBSCURED obscured
777 #else
778 #define OBSCURED(a, b) 0
779 #endif
780
781 static struct tile *rendertile (struct page *page, int x, int y, int w, int h)
782 {
783 fz_bbox bbox;
784 fz_device *dev;
785 struct tile *tile;
786 struct pagedim *pdim;
787
788 tile = alloctile (h);
789 pdim = &state.pagedims[page->pdimno];
790
791 bbox = pdim->bounds;
792 bbox.x0 += x;
793 bbox.y0 += y;
794 bbox.x1 = bbox.x0 + w;
795 bbox.y1 = bbox.y0 + h;
796
797 if (state.pig) {
798 if (state.pig->w == w
799 && state.pig->h == h
800 && state.pig->colorspace == state.colorspace) {
801 tile->pixmap = state.pig;
802 tile->pixmap->x = bbox.x0;
803 tile->pixmap->y = bbox.y0;
804 }
805 else {
806 fz_drop_pixmap (state.ctx, state.pig);
807 }
808 state.pig = NULL;
809 }
810 if (!tile->pixmap) {
811 tile->pixmap =
812 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, bbox);
813 }
814
815 tile->w = w;
816 tile->h = h;
817 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
818 clearpixmap (tile->pixmap);
819 }
820 dev = fz_new_draw_device (state.ctx, tile->pixmap);
821 fz_run_display_list (page->dlist, dev, pagectm (page), bbox, NULL);
822 fz_free_device (dev);
823
824 return tile;
825 }
826
827 static void initpdims (void)
828 {
829 double start, end;
830 int pageno, trim, show;
831 FILE *trimf = NULL;
832 int trimw = 0;
833
834 start = now ();
835
836 if (state.trimmargins && state.trimcachepath) {
837 trimf = fopen (state.trimcachepath, "rb");
838 if (!trimf) {
839 trimf = fopen (state.trimcachepath, "wb");
840 trimw = 1;
841 }
842 }
843 for (pageno = 0; pageno < state.pagecount; ++pageno) {
844 int rotate = 0;
845 struct pagedim *p;
846 fz_rect mediabox;
847
848 switch (state.type) {
849 case DPDF: {
850 pdf_obj *pageobj = state.u.pdf->page_objs[pageno];
851
852 if (state.trimmargins) {
853 pdf_obj *obj;
854 pdf_page *page;
855
856 fz_try (state.ctx) {
857 page = pdf_load_page (state.u.pdf, pageno);
858 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
859 trim = state.trimanew || !obj;
860 if (trim) {
861 fz_rect rect;
862 fz_bbox bbox;
863 fz_matrix ctm;
864 fz_device *dev;
865
866 dev = fz_new_bbox_device (state.ctx, &bbox);
867 dev->hints |= FZ_IGNORE_SHADE;
868 ctm = fz_invert_matrix (page->ctm);
869 pdf_run_page (state.u.pdf, page, dev, fz_identity, NULL);
870 fz_free_device (dev);
871
872 rect.x0 = bbox.x0 + state.trimfuzz.x0;
873 rect.x1 = bbox.x1 + state.trimfuzz.x1;
874 rect.y0 = bbox.y0 + state.trimfuzz.y0;
875 rect.y1 = bbox.y1 + state.trimfuzz.y1;
876 rect = fz_transform_rect (ctm, rect);
877 rect = fz_intersect_rect (rect, page->mediabox);
878
879 if (fz_is_empty_rect (rect)) {
880 mediabox = page->mediabox;
881 }
882 else {
883 mediabox = rect;
884 }
885
886 obj = pdf_new_array (state.ctx, 4);
887 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x0));
888 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y0));
889 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x1));
890 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y1));
891 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
892 }
893 else {
894 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
895 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
896 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
897 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
898 }
899
900 rotate = page->rotate;
901 pdf_free_page (state.u.pdf, page);
902
903 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
904 if (show) {
905 printd ("progress %f Trimming %d",
906 (double) (pageno + 1) / state.pagecount,
907 pageno + 1);
908 }
909 }
910 fz_catch (state.ctx) {
911 }
912 }
913 else {
914 fz_rect cropbox;
915
916 mediabox = pdf_to_rect (state.ctx,
917 pdf_dict_gets (pageobj, "MediaBox"));
918 if (fz_is_empty_rect (mediabox)) {
919 fprintf (stderr, "cannot find page size for page %d\n",
920 pageno+1);
921 mediabox.x0 = 0;
922 mediabox.y0 = 0;
923 mediabox.x1 = 612;
924 mediabox.y1 = 792;
925 }
926
927 cropbox = pdf_to_rect (state.ctx,
928 pdf_dict_gets (pageobj, "CropBox"));
929 if (!fz_is_empty_rect (cropbox)) {
930 mediabox = fz_intersect_rect (mediabox, cropbox);
931 }
932 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
933 }
934 break;
935 }
936
937 case DXPS:
938 {
939 xps_page *page;
940
941 page = xps_load_page (state.u.xps, pageno);
942 mediabox = xps_bound_page (state.u.xps, page);
943 rotate = 0;
944 if (state.trimmargins) {
945 fz_rect rect;
946 fz_bbox bbox;
947 fz_device *dev;
948
949 dev = fz_new_bbox_device (state.ctx, &bbox);
950 dev->hints |= FZ_IGNORE_SHADE;
951 xps_run_page (state.u.xps, page, dev, fz_identity, NULL);
952 fz_free_device (dev);
953
954 rect.x0 = bbox.x0 + state.trimfuzz.x0;
955 rect.x1 = bbox.x1 + state.trimfuzz.x1;
956 rect.y0 = bbox.y0 + state.trimfuzz.y0;
957 rect.y1 = bbox.y1 + state.trimfuzz.y1;
958 rect = fz_intersect_rect (rect, mediabox);
959
960 if (!fz_is_empty_rect (rect)) {
961 mediabox = rect;
962 }
963 }
964 xps_free_page (state.u.xps, page);
965 printd ("progress %f loading %d",
966 (double) (pageno + 1) / state.pagecount,
967 pageno + 1);
968 }
969 break;
970
971 case DCBZ:
972 {
973 rotate = 0;
974 if (state.trimmargins && trimw) {
975 cbz_page *page;
976
977 page = cbz_load_page (state.u.cbz, pageno);
978 mediabox = cbz_bound_page (state.u.cbz, page);
979 cbz_free_page (state.u.cbz, page);
980 printd ("progress %f Trimming %d",
981 (double) (pageno + 1) / state.pagecount,
982 pageno + 1);
983 if (trimf) {
984 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
985 if (n - 1) {
986 err (1, "fwrite trim mediabox");
987 }
988 }
989 }
990 else {
991 if (trimf) {
992 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
993 if (n - 1) {
994 err (1, "fread trim mediabox");
995 }
996 }
997 else {
998 mediabox.x0 = mediabox.y0 = 0;
999 mediabox.x1 = 900;
1000 mediabox.y1 = 900;
1001 }
1002 }
1003 }
1004 break;
1005
1006 default:
1007 ARSERT (0 && state.type);
1008 }
1009
1010 if (state.pagedimcount == 0
1011 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1012 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1013 size_t size;
1014
1015 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1016 state.pagedims = realloc (state.pagedims, size);
1017 if (!state.pagedims) {
1018 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1019 size, state.pagedimcount + 1);
1020 }
1021
1022 p = &state.pagedims[state.pagedimcount++];
1023 p->rotate = rotate;
1024 p->mediabox = mediabox;
1025 p->pageno = pageno;
1026 }
1027 }
1028 end = now ();
1029 if (state.trimmargins) {
1030 printd ("progress 1 Trimmed %d pages in %f seconds",
1031 state.pagecount, end - start);
1032 }
1033 else {
1034 printd ("vmsg Processed %d pages in %f seconds",
1035 state.pagecount, end - start);
1036 }
1037 state.trimanew = 0;
1038 if (trimf) {
1039 if (fclose (trimf)) {
1040 err (1, "fclose");
1041 }
1042 }
1043 }
1044
1045 static void layout (void)
1046 {
1047 int pindex;
1048 fz_rect box;
1049 fz_matrix ctm;
1050 double zoom, w, maxw = 0;
1051 struct pagedim *p = state.pagedims;
1052
1053 if (state.proportional) {
1054 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1055 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1056 p->mediabox);
1057 w = box.x1 - box.x0;
1058 maxw = MAX (w, maxw);
1059 }
1060 }
1061
1062 p = state.pagedims;
1063 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1064 fz_bbox bbox;
1065
1066 ctm = fz_rotate (state.rotate);
1067 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1068 p->mediabox);
1069 w = box.x1 - box.x0;
1070
1071 if (state.proportional) {
1072 double scale = w / maxw;
1073 zoom = (state.w / w) * scale;
1074 }
1075 else {
1076 zoom = state.w / w;
1077 }
1078
1079 p->zoomctm = fz_scale (zoom, zoom);
1080 ctm = fz_concat (p->zoomctm, ctm);
1081
1082 p->pagebox = fz_transform_rect (fz_rotate (p->rotate), p->mediabox);
1083 p->pagebox.x1 -= p->pagebox.x0;
1084 p->pagebox.y1 -= p->pagebox.y0;
1085 p->pagebox.x0 = 0;
1086 p->pagebox.y0 = 0;
1087 bbox = fz_round_rect (fz_transform_rect (ctm, p->pagebox));
1088
1089 p->bounds = bbox;
1090 p->left = state.proportional ? ((maxw - w) * zoom) / 2.0 : 0;
1091 p->ctm = ctm;
1092
1093 ctm = fz_identity;
1094 ctm = fz_concat (ctm, fz_translate (0, -p->mediabox.y1));
1095 ctm = fz_concat (ctm, fz_scale (zoom, -zoom));
1096 ctm = fz_concat (ctm, fz_rotate (p->rotate + state.rotate));
1097 p->lctm = ctm;
1098
1099 p->tctmready = 0;
1100 }
1101
1102 while (p-- != state.pagedims) {
1103 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1104 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1105 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1106 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1107 int w = x1 - x0;
1108 int h = y1 - y0;
1109
1110 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1111 }
1112 }
1113
1114 static void recurse_outline (fz_outline *outline, int level)
1115 {
1116 while (outline) {
1117 fz_link_dest *dest;
1118 int i, top = 0;
1119 struct pagedim *pdim = state.pagedims;
1120
1121 dest = &outline->dest;
1122 for (i = 0; i < state.pagedimcount; ++i) {
1123 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1124 break;
1125 pdim = &state.pagedims[i];
1126 }
1127 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1128 fz_point p;
1129 p.x = 0;
1130 p.y = dest->ld.gotor.lt.y;
1131 p = fz_transform_point (pdim->lctm, p);
1132 top = p.y;
1133 }
1134 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1135 int h;
1136 double y0, y1;
1137
1138 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1139 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1140 h = y1 - y0;
1141 printd ("o %d %d %d %d %s",
1142 level, dest->ld.gotor.page, top, h, outline->title);
1143 }
1144 if (outline->down) {
1145 recurse_outline (outline->down, level + 1);
1146 }
1147 outline = outline->next;
1148 }
1149 }
1150
1151 static void process_outline (void)
1152 {
1153 fz_outline *outline;
1154
1155 if (!state.needoutline) return;
1156
1157 state.needoutline = 0;
1158 switch (state.type) {
1159 case DPDF:
1160 outline = pdf_load_outline (state.u.pdf);
1161 break;
1162 case DXPS:
1163 outline = xps_load_outline (state.u.xps);
1164 break;
1165 default:
1166 outline = NULL;
1167 break;
1168 }
1169 if (outline) {
1170 recurse_outline (outline, 0);
1171 fz_free_outline (state.ctx, outline);
1172 }
1173 }
1174
1175 static char *strofspan (fz_text_span *span)
1176 {
1177 char *p;
1178 char utf8[10];
1179 fz_text_char *ch;
1180 size_t size = 0, cap = 80;
1181
1182 p = malloc (cap + 1);
1183 if (!p) return NULL;
1184
1185 for (ch = span->text; ch < span->text + span->len; ++ch) {
1186 int n = fz_runetochar (utf8, ch->c);
1187 if (size + n > cap) {
1188 cap *= 2;
1189 p = realloc (p, cap + 1);
1190 if (!p) return NULL;
1191 }
1192
1193 memcpy (p + size, utf8, n);
1194 size += n;
1195 }
1196 p[size] = 0;
1197 return p;
1198 }
1199
1200 static int matchspan (regex_t *re, fz_text_span *span, fz_matrix ctm,
1201 int stop, int pageno, double start)
1202 {
1203 int ret;
1204 char *p;
1205 regmatch_t rm;
1206 int a, b, c;
1207 fz_rect *sb, *eb;
1208 fz_point p1, p2, p3, p4;
1209
1210 p = strofspan (span);
1211 if (!p) return -1;
1212
1213 ret = regexec (re, p, 1, &rm, 0);
1214 if (ret) {
1215 free (p);
1216 if (ret != REG_NOMATCH) {
1217 size_t size;
1218 char errbuf[80];
1219 size = regerror (ret, re, errbuf, sizeof (errbuf));
1220 printd ("msg regexec error `%.*s'",
1221 (int) size, errbuf);
1222 return -1;
1223 }
1224 return 0;
1225 }
1226 else {
1227 int l = span->len;
1228 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1229 c += fz_runelen (span->text[a].c);
1230 }
1231 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1232 c += fz_runelen (span->text[b].c);
1233 }
1234
1235 if (fz_runelen (span->text[b].c) > 1) {
1236 b = MAX (0, b-1);
1237 }
1238 sb = &span->text[MIN (a, l-1)].bbox;
1239 eb = &span->text[MIN (b, l-1)].bbox;
1240
1241 p1.x = sb->x0;
1242 p1.y = sb->y0;
1243 p2.x = eb->x1;
1244 p2.y = sb->y0;
1245 p3.x = eb->x1;
1246 p3.y = eb->y1;
1247 p4.x = sb->x0;
1248 p4.y = eb->y1;
1249
1250 if (!stop) {
1251 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1252 pageno, 1,
1253 p1.x, p1.y,
1254 p2.x, p2.y,
1255 p3.x, p3.y,
1256 p4.x, p4.y);
1257
1258 printd ("progress 1 found at %d `%.*s' in %f sec",
1259 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1260 now () - start);
1261 }
1262 else {
1263 printd ("match %d %d %f %f %f %f %f %f %f %f",
1264 pageno, 2,
1265 p1.x, p1.y,
1266 p2.x, p2.y,
1267 p3.x, p3.y,
1268 p4.x, p4.y);
1269 }
1270 free (p);
1271 return 1;
1272 }
1273 }
1274
1275 static int compareblocks (const void *l, const void *r)
1276 {
1277 fz_text_block const *ls = l;
1278 fz_text_block const* rs = r;
1279 return ls->bbox.y0 - rs->bbox.y0;
1280 }
1281
1282 /* wishful thinking function */
1283 static void search (regex_t *re, int pageno, int y, int forward)
1284 {
1285 int i, j;
1286 fz_matrix ctm;
1287 fz_device *tdev;
1288 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1289 fz_text_page *text;
1290 fz_text_sheet *sheet;
1291 struct pagedim *pdim, *pdimprev;
1292 int stop = 0, niters = 0;
1293 double start, end;
1294
1295 if (!(state.type == DPDF || state.type == DXPS))
1296 return;
1297
1298 start = now ();
1299 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1300 if (niters++ == 5) {
1301 niters = 0;
1302 if (hasdata ()) {
1303 printd ("progress 1 attention requested aborting search at %d",
1304 pageno);
1305 stop = 1;
1306 }
1307 else {
1308 printd ("progress %f searching in page %d",
1309 (double) (pageno + 1) / state.pagecount,
1310 pageno);
1311 }
1312 }
1313 pdimprev = NULL;
1314 for (i = 0; i < state.pagedimcount; ++i) {
1315 pdim = &state.pagedims[i];
1316 if (pdim->pageno == pageno) {
1317 goto found;
1318 }
1319 if (pdim->pageno > pageno) {
1320 pdim = pdimprev;
1321 goto found;
1322 }
1323 pdimprev = pdim;
1324 }
1325 pdim = pdimprev;
1326 found:
1327
1328 sheet = fz_new_text_sheet (state.ctx);
1329 text = fz_new_text_page (state.ctx, fz_infinite_rect);
1330 tdev = fz_new_text_device (state.ctx, sheet, text);
1331
1332 switch (state.type) {
1333 case DPDF:
1334 u.ptr = NULL;
1335 fz_try (state.ctx) {
1336 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1337 trimctm (u.pdfpage, pdim - state.pagedims);
1338 ctm = fz_concat (pdim->tctm, pdim->zoomctm);
1339 pdf_run_page (state.u.pdf, u.pdfpage, tdev, ctm, NULL);
1340 }
1341 fz_catch (state.ctx) {
1342 fz_free_device (tdev);
1343 u.ptr = NULL;
1344 goto nextiter;
1345 }
1346 break;
1347
1348 case DXPS:
1349 u.xpspage = xps_load_page (state.u.xps, pageno);
1350 ctm = pdim->ctm;
1351 xps_run_page (state.u.xps, u.xpspage, tdev, ctm, NULL);
1352 break;
1353
1354 default:
1355 ARSERT (0 && state.type);
1356 }
1357
1358 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1359 fz_free_device (tdev);
1360
1361 for (j = 0; j < text->len; ++j) {
1362 int k;
1363 fz_text_block *block;
1364
1365 block = &text->blocks[forward ? j : text->len - 1 - j];
1366
1367 for (k = 0; k < block->len; ++k) {
1368 fz_text_line *line;
1369 fz_text_span *span;
1370
1371 if (forward) {
1372 line = &block->lines[k];
1373 if (line->bbox.y0 < y + 1) continue;
1374 }
1375 else {
1376 line = &block->lines[block->len - 1 - k];
1377 if (line->bbox.y0 > y - 1) continue;
1378 }
1379
1380 for (span = line->spans;
1381 span < line->spans + line->len;
1382 ++span) {
1383
1384 switch (matchspan (re, span, ctm, stop, pageno, start)) {
1385 case 0: break;
1386 case 1: stop = 1; break;
1387 case -1: stop = 1; goto endloop;
1388 }
1389 }
1390 }
1391 }
1392 nextiter:
1393 if (forward) {
1394 pageno += 1;
1395 y = 0;
1396 }
1397 else {
1398 pageno -= 1;
1399 y = INT_MAX;
1400 }
1401 endloop:
1402 fz_free_text_page (state.ctx, text);
1403 fz_free_text_sheet (state.ctx, sheet);
1404 if (u.ptr) {
1405 state.freepage (u.ptr);
1406 }
1407 }
1408 end = now ();
1409 if (!stop) {
1410 printd ("progress 1 no matches %f sec", end - start);
1411 }
1412 printd ("clearrects");
1413 }
1414
1415 static void set_tex_params (int colorspace)
1416 {
1417 union {
1418 unsigned char b;
1419 unsigned int s;
1420 } endianness = {1};
1421
1422 switch (colorspace) {
1423 case 0:
1424 state.texiform = GL_RGBA8;
1425 state.texform = GL_RGBA;
1426 state.texty = GL_UNSIGNED_BYTE;
1427 state.colorspace = fz_device_rgb;
1428 break;
1429 case 1:
1430 state.texiform = GL_RGBA8;
1431 state.texform = GL_BGRA;
1432 state.texty = endianness.s > 1
1433 ? GL_UNSIGNED_INT_8_8_8_8
1434 : GL_UNSIGNED_INT_8_8_8_8_REV;
1435 state.colorspace = fz_device_bgr;
1436 break;
1437 case 2:
1438 state.texiform = GL_LUMINANCE_ALPHA;
1439 state.texform = GL_LUMINANCE_ALPHA;
1440 state.texty = GL_UNSIGNED_BYTE;
1441 state.colorspace = fz_device_gray;
1442 break;
1443 default:
1444 errx (1, "invalid colorspce %d", colorspace);
1445 }
1446 }
1447
1448 static void realloctexts (int texcount)
1449 {
1450 size_t size;
1451
1452 if (texcount == state.texcount) return;
1453
1454 if (texcount < state.texcount) {
1455 glDeleteTextures (state.texcount - texcount,
1456 state.texids + texcount);
1457 }
1458
1459 size = texcount * sizeof (*state.texids);
1460 state.texids = realloc (state.texids, size);
1461 if (!state.texids) {
1462 err (1, "realloc texids %" FMT_s, size);
1463 }
1464
1465 size = texcount * sizeof (*state.texowners);
1466 state.texowners = realloc (state.texowners, size);
1467 if (!state.texowners) {
1468 err (1, "realloc texowners %" FMT_s, size);
1469 }
1470 if (texcount > state.texcount) {
1471 int i;
1472
1473 glGenTextures (texcount - state.texcount,
1474 state.texids + state.texcount);
1475 for (i = state.texcount; i < texcount; ++i) {
1476 state.texowners[i].w = -1;
1477 state.texowners[i].slice = NULL;
1478 }
1479 }
1480 state.texcount = texcount;
1481 state.texindex = 0;
1482 }
1483
1484 static char *mbtoutf8 (char *s)
1485 {
1486 char *p, *r;
1487 wchar_t *tmp;
1488 size_t i, ret, len;
1489
1490 len = mbstowcs (NULL, s, strlen (s));
1491 if (len == 0) {
1492 return s;
1493 }
1494 else {
1495 if (len == (size_t) -1) {
1496 return s;
1497 }
1498 }
1499
1500 tmp = malloc (len * sizeof (wchar_t));
1501 if (!tmp) {
1502 return s;
1503 }
1504
1505 ret = mbstowcs (tmp, s, len);
1506 if (ret == (size_t) -1) {
1507 free (tmp);
1508 return s;
1509 }
1510
1511 len = 0;
1512 for (i = 0; i < ret; ++i) {
1513 len += fz_runelen (tmp[i]);
1514 }
1515
1516 p = r = malloc (len);
1517 if (!r) {
1518 free (tmp);
1519 return s;
1520 }
1521
1522 for (i = 0; i < ret; ++i) {
1523 p += fz_runetochar (p, tmp[i]);
1524 }
1525 return r;
1526 }
1527
1528 static void * mainloop (void *unused)
1529 {
1530 char *p = NULL;
1531 int len, ret, oldlen = 0;
1532
1533 for (;;) {
1534 len = readlen ();
1535 if (len == 0) {
1536 errx (1, "readlen returned 0");
1537 }
1538
1539 if (oldlen < len + 1) {
1540 p = realloc (p, len + 1);
1541 if (!p) {
1542 err (1, "realloc %d failed", len + 1);
1543 }
1544 oldlen = len + 1;
1545 }
1546 readdata (p, len);
1547 p[len] = 0;
1548
1549 if (!strncmp ("open", p, 4)) {
1550 size_t filenamelen;
1551 char *password;
1552 char *filename = p + 5;
1553 char *utf8filename;
1554
1555 filenamelen = strlen (filename);
1556 password = filename + filenamelen + 1;
1557
1558 openxref (filename, password);
1559 pdfinfo ();
1560 initpdims ();
1561 utf8filename = mbtoutf8 (filename);
1562 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1563 if (utf8filename != filename) {
1564 free (utf8filename);
1565 }
1566 state.needoutline = 1;
1567 }
1568 else if (!strncmp ("cs", p, 2)) {
1569 int i, colorspace;
1570
1571 ret = sscanf (p + 2, " %d", &colorspace);
1572 if (ret != 1) {
1573 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1574 }
1575 lock ("cs");
1576 set_tex_params (colorspace);
1577 for (i = 0; i < state.texcount; ++i) {
1578 state.texowners[i].w = -1;
1579 state.texowners[i].slice = NULL;
1580 }
1581 unlock ("cs");
1582 }
1583 else if (!strncmp ("freepage", p, 8)) {
1584 void *ptr;
1585
1586 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1587 if (ret != 1) {
1588 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1589 }
1590 freepage (ptr);
1591 }
1592 else if (!strncmp ("freetile", p, 8)) {
1593 void *ptr;
1594
1595 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1596 if (ret != 1) {
1597 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1598 }
1599 freetile (ptr);
1600 }
1601 else if (!strncmp ("search", p, 6)) {
1602 int icase, pageno, y, ret, len2, forward;
1603 char *pattern;
1604 regex_t re;
1605
1606 ret = sscanf (p + 6, " %d %d %d %d,%n",
1607 &icase, &pageno, &y, &forward, &len2);
1608 if (ret != 4) {
1609 errx (1, "malformed search `%s' ret=%d", p, ret);
1610 }
1611
1612 pattern = p + 6 + len2;
1613 ret = regcomp (&re, pattern,
1614 REG_EXTENDED | (icase ? REG_ICASE : 0));
1615 if (ret) {
1616 char errbuf[80];
1617 size_t size;
1618
1619 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1620 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1621 }
1622 else {
1623 search (&re, pageno, y, forward);
1624 regfree (&re);
1625 }
1626 }
1627 else if (!strncmp ("geometry", p, 8)) {
1628 int w, h;
1629
1630 printd ("clear");
1631 ret = sscanf (p + 8, " %d %d", &w, &h);
1632 if (ret != 2) {
1633 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1634 }
1635
1636 lock ("geometry");
1637 state.h = h;
1638 if (w != state.w) {
1639 int i;
1640 state.w = w;
1641 for (i = 0; i < state.texcount; ++i) {
1642 state.texowners[i].slice = NULL;
1643 }
1644 }
1645 layout ();
1646 process_outline ();
1647 state.gen++;
1648 unlock ("geometry");
1649 printd ("continue %d", state.pagecount);
1650 }
1651 else if (!strncmp ("reqlayout", p, 9)) {
1652 int rotate, proportional;
1653
1654 printd ("clear");
1655 ret = sscanf (p + 9, " %d %d", &rotate, &proportional);
1656 if (ret != 2) {
1657 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1658 }
1659 lock ("reqlayout");
1660 if (state.rotate != rotate || state.proportional != proportional) {
1661 state.gen += 1;
1662 }
1663 state.rotate = rotate;
1664 state.proportional = proportional;
1665 layout ();
1666 process_outline ();
1667 state.gen++;
1668 unlock ("reqlayout");
1669 printd ("continue %d", state.pagecount);
1670 }
1671 else if (!strncmp ("page", p, 4)) {
1672 double a, b;
1673 struct page *page;
1674 int pageno, pindex, ret;
1675
1676 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1677 if (ret != 2) {
1678 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1679 }
1680
1681 lock ("page");
1682 a = now ();
1683 page = loadpage (pageno, pindex);
1684 b = now ();
1685 unlock ("page");
1686
1687 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1688 }
1689 else if (!strncmp ("tile", p, 4)) {
1690 int x, y, w, h, ret;
1691 struct page *page;
1692 struct tile *tile;
1693 double a, b;
1694
1695 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d",
1696 FMT_ptr_cast (&page), &x, &y, &w, &h);
1697 if (ret != 5) {
1698 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1699 }
1700
1701 lock ("tile");
1702 a = now ();
1703 tile = rendertile (page, x, y, w, h);
1704 b = now ();
1705 unlock ("tile");
1706
1707 printd ("tile %d %d %" FMT_ptr " %u %f",
1708 x, y,
1709 FMT_ptr_cast2 (tile),
1710 tile->w * tile->h * tile->pixmap->n,
1711 b - a);
1712 }
1713 else if (!strncmp ("settrim", p, 7)) {
1714 int trimmargins;
1715 fz_bbox fuzz;
1716
1717 ret = sscanf (p + 7, " %d %d %d %d %d", &trimmargins,
1718 &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1719 if (ret != 5) {
1720 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1721 }
1722 printd ("clear");
1723 lock ("settrim");
1724 state.trimmargins = trimmargins;
1725 state.needoutline = 1;
1726 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1727 state.trimanew = 1;
1728 state.trimfuzz = fuzz;
1729 }
1730 state.pagedimcount = 0;
1731 free (state.pagedims);
1732 state.pagedims = NULL;
1733 initpdims ();
1734 layout ();
1735 process_outline ();
1736 unlock ("settrim");
1737 printd ("continue %d", state.pagecount);
1738 }
1739 else if (!strncmp ("sliceh", p, 6)) {
1740 int h;
1741
1742 ret = sscanf (p + 6, " %d", &h);
1743 if (ret != 1) {
1744 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1745 }
1746 if (h != state.sliceheight) {
1747 int i;
1748
1749 state.sliceheight = h;
1750 for (i = 0; i < state.texcount; ++i) {
1751 state.texowners[i].w = -1;
1752 state.texowners[i].h = -1;
1753 state.texowners[i].slice = NULL;
1754 }
1755 }
1756 }
1757 else if (!strncmp ("interrupt", p, 9)) {
1758 printd ("vmsg interrupted");
1759 }
1760 else {
1761 errx (1, "unknown command %.*s", len, p);
1762 }
1763 }
1764 return 0;
1765 }
1766
1767 CAMLprim value ml_realloctexts (value texcount_v)
1768 {
1769 CAMLparam1 (texcount_v);
1770 int ok;
1771
1772 if (trylock ("ml_realloctexts")) {
1773 ok = 0;
1774 goto done;
1775 }
1776 realloctexts (Int_val (texcount_v));
1777 ok = 1;
1778 unlock ("ml_realloctexts");
1779
1780 done:
1781 CAMLreturn (Val_bool (ok));
1782 }
1783
1784 static void showsel (struct page *page, int ox, int oy)
1785 {
1786 int seen = 0;
1787 fz_bbox bbox;
1788 fz_text_line *line;
1789 fz_text_span *span;
1790 fz_text_block *block;
1791 struct mark first, last;
1792
1793 first = page->fmark;
1794 last = page->lmark;
1795
1796 if (!first.span || !last.span) return;
1797
1798 glEnable (GL_BLEND);
1799 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
1800 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
1801
1802 ox += state.pagedims[page->pdimno].bounds.x0;
1803 oy += state.pagedims[page->pdimno].bounds.y0;
1804 for (block = page->text->blocks;
1805 block < page->text->blocks + page->text->len;
1806 ++block) {
1807 for (line = block->lines;
1808 line < block->lines + block->len;
1809 ++line) {
1810 for (span = line->spans;
1811 span < line->spans + line->len;
1812 ++span) {
1813 int i, j, k;
1814
1815 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
1816
1817 j = 0;
1818 k = span->len - 1;
1819
1820 if (span == page->fmark.span && span == page->lmark.span) {
1821 seen = 1;
1822 j = MIN (first.i, last.i);
1823 k = MAX (first.i, last.i);
1824 }
1825 else if (span == first.span) {
1826 seen = 1;
1827 j = first.i;
1828 }
1829 else if (span == last.span) {
1830 seen = 1;
1831 k = last.i;
1832 }
1833
1834 if (seen) {
1835 for (i = j; i <= k; ++i) {
1836 fz_bbox b = fz_round_rect (span->text[i].bbox);
1837 bbox = fz_union_bbox (bbox, b);
1838 }
1839 lprintf ("%d %d %d %d oy=%d ox=%d\n",
1840 bbox.x0,
1841 bbox.y0,
1842 bbox.x1,
1843 bbox.y1,
1844 oy, ox);
1845
1846 glRecti (bbox.x0 + ox, bbox.y0 + oy,
1847 bbox.x1 + ox, bbox.y1 + oy);
1848 if (span == last.span) {
1849 goto done;
1850 }
1851 }
1852 }
1853 }
1854 }
1855 done:
1856 glDisable (GL_BLEND);
1857 }
1858
1859 #include "glfont.c"
1860
1861 static void highlightlinks (struct page *page, int xoff, int yoff)
1862 {
1863 fz_matrix ctm;
1864 fz_link *link, *links;
1865
1866 switch (page->type) {
1867 case DPDF:
1868 links = page->u.pdfpage->links;
1869 break;
1870
1871 case DXPS:
1872 links = page->u.xpspage->links;
1873 break;
1874
1875 default:
1876 return;
1877 }
1878
1879 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
1880 glEnable (GL_LINE_STIPPLE);
1881 glLineStipple (0.5, 0xcccc);
1882
1883 xoff -= state.pagedims[page->pdimno].bounds.x0;
1884 yoff -= state.pagedims[page->pdimno].bounds.y0;
1885 ctm = fz_concat (pagectm (page), fz_translate (xoff, yoff));
1886
1887 glBegin (GL_QUADS);
1888 for (link = links; link; link = link->next) {
1889 fz_point p1, p2, p3, p4;
1890
1891 p1.x = link->rect.x0;
1892 p1.y = link->rect.y0;
1893
1894 p2.x = link->rect.x1;
1895 p2.y = link->rect.y0;
1896
1897 p3.x = link->rect.x1;
1898 p3.y = link->rect.y1;
1899
1900 p4.x = link->rect.x0;
1901 p4.y = link->rect.y1;
1902
1903 p1 = fz_transform_point (ctm, p1);
1904 p2 = fz_transform_point (ctm, p2);
1905 p3 = fz_transform_point (ctm, p3);
1906 p4 = fz_transform_point (ctm, p4);
1907
1908 switch (link->dest.kind) {
1909 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
1910 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
1911 default: glColor3ub (0, 0, 0); break;
1912 }
1913
1914 glVertex2f (p1.x, p1.y);
1915 glVertex2f (p2.x, p2.y);
1916 glVertex2f (p3.x, p3.y);
1917 glVertex2f (p4.x, p4.y);
1918 }
1919 glEnd ();
1920
1921 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
1922 glDisable (GL_LINE_STIPPLE);
1923 }
1924
1925 static int compareslinks (const void *l, const void *r)
1926 {
1927 struct slink const *ls = l;
1928 struct slink const *rs = r;
1929 if (ls->bbox.y0 == rs->bbox.y0) {
1930 return rs->bbox.x0 - rs->bbox.x0;
1931 }
1932 return ls->bbox.y0 - rs->bbox.y0;
1933 }
1934
1935 static void droptext (struct page *page)
1936 {
1937 if (page->text) {
1938 fz_free_text_page (state.ctx, page->text);
1939 page->fmark.i = -1;
1940 page->lmark.i = -1;
1941 page->fmark.span = NULL;
1942 page->lmark.span = NULL;
1943 page->text = NULL;
1944 }
1945 if (page->sheet) {
1946 fz_free_text_sheet (state.ctx, page->sheet);
1947 }
1948 }
1949
1950 static void dropslinks (struct page *page)
1951 {
1952 if (page->slinks) {
1953 free (page->slinks);
1954 page->slinks = NULL;
1955 page->slinkcount = 0;
1956 }
1957 }
1958
1959 static void ensureslinks (struct page *page)
1960 {
1961 fz_matrix ctm;
1962 int i, count = 0;
1963 size_t slinksize = sizeof (*page->slinks);
1964 fz_link *link, *links;
1965
1966 if (state.gen != page->sgen) {
1967 dropslinks (page);
1968 page->sgen = state.gen;
1969 }
1970 if (page->slinks) return;
1971
1972 switch (page->type) {
1973 case DPDF:
1974 links = page->u.pdfpage->links;
1975 ctm = fz_concat (trimctm (page->u.pdfpage, page->pdimno),
1976 state.pagedims[page->pdimno].ctm);
1977 break;
1978
1979 case DXPS:
1980 links = page->u.xpspage->links;
1981 ctm = state.pagedims[page->pdimno].ctm;
1982 break;
1983
1984 default:
1985 return;
1986 }
1987
1988 for (link = links; link; link = link->next) {
1989 count++;
1990 }
1991 if (count > 0) {
1992 page->slinkcount = count;
1993 page->slinks = calloc (count, slinksize);
1994 if (!page->slinks) {
1995 err (1, "realloc slinks %d", count);
1996 }
1997
1998 for (i = 0, link = links; link; ++i, link = link->next) {
1999 page->slinks[i].link = link;
2000 page->slinks[i].bbox =
2001 fz_round_rect (fz_transform_rect (ctm, link->rect));
2002 }
2003 qsort (page->slinks, count, slinksize, compareslinks);
2004 }
2005 }
2006
2007 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2008 static void fmt_linkn (char *s, unsigned int u)
2009 {
2010 unsigned int len; unsigned int q;
2011 int zma = 'z' - 'a' + 1;
2012 len = 1; q = u;
2013 while (q > zma - 1) { ++len; q /= zma; }
2014 if (s) {
2015 s += len;
2016 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2017 /* handles u == 0 */
2018 }
2019 s[len] = 0;
2020 }
2021
2022 static void highlightslinks (struct page *page, int xoff, int yoff,
2023 int noff, char *targ, int tlen, int hfsize)
2024 {
2025 int i;
2026 char buf[40];
2027 struct slink *slink;
2028 double x0, y0, x1, y1, w;
2029
2030 ensureslinks (page);
2031 glColor3ub (0xc3, 0xb0, 0x91);
2032 for (i = 0; i < page->slinkcount; ++i) {
2033 fmt_linkn (buf, i + noff);
2034 if (!tlen || !strncmp (targ, buf, tlen)) {
2035 slink = &page->slinks[i];
2036
2037 x0 = slink->bbox.x0 + xoff - 5;
2038 y1 = slink->bbox.y0 + yoff - 5;
2039 y0 = y1 + 10 + hfsize;
2040 w = measure_string (state.face, hfsize, buf);
2041 x1 = x0 + w + 10;
2042 glRectd (x0, y0, x1, y1);
2043 }
2044 }
2045
2046 glEnable (GL_BLEND);
2047 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2048 glEnable (GL_TEXTURE_2D);
2049 glColor3ub (0, 0, 0);
2050 for (i = 0; i < page->slinkcount; ++i) {
2051 fmt_linkn (buf, i + noff);
2052 if (!tlen || !strncmp (targ, buf, tlen)) {
2053 slink = &page->slinks[i];
2054
2055 x0 = slink->bbox.x0 + xoff;
2056 y0 = slink->bbox.y0 + yoff + hfsize;
2057 draw_string (state.face, hfsize, x0, y0, buf);
2058 }
2059 }
2060 glDisable (GL_TEXTURE_2D);
2061 glDisable (GL_BLEND);
2062 }
2063
2064
2065 static void uploadslice (struct tile *tile, struct slice *slice)
2066 {
2067 int offset;
2068 struct slice *slice1;
2069
2070 offset = 0;
2071 for (slice1 = tile->slices; slice != slice1; slice1++) {
2072 offset += slice1->h * tile->w * tile->pixmap->n;
2073 }
2074 if (slice->texindex != -1 && slice->texindex < state.texcount
2075 && state.texowners[slice->texindex].slice == slice) {
2076 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2077 }
2078 else {
2079 int subimage = 0;
2080 int texindex = state.texindex++ % state.texcount;
2081
2082 if (state.texowners[texindex].w == tile->w) {
2083 if (state.texowners[texindex].h >= slice->h) {
2084 subimage = 1;
2085 }
2086 else {
2087 state.texowners[texindex].h = slice->h;
2088 }
2089 }
2090 else {
2091 state.texowners[texindex].h = slice->h;
2092 }
2093
2094 state.texowners[texindex].w = tile->w;
2095 state.texowners[texindex].slice = slice;
2096 slice->texindex = texindex;
2097
2098 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2099 if (subimage) {
2100 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2101 0,
2102 0,
2103 0,
2104 tile->w,
2105 slice->h,
2106 state.texform,
2107 state.texty,
2108 tile->pixmap->samples+offset
2109 );
2110 }
2111 else {
2112 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2113 0,
2114 state.texiform,
2115 tile->w,
2116 slice->h,
2117 0,
2118 state.texform,
2119 state.texty,
2120 tile->pixmap->samples+offset
2121 );
2122 }
2123 }
2124 }
2125
2126 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2127 {
2128 CAMLparam2 (args_v, ptr_v);
2129 int dispx = Int_val (Field (args_v, 0));
2130 int dispy = Int_val (Field (args_v, 1));
2131 int dispw = Int_val (Field (args_v, 2));
2132 int disph = Int_val (Field (args_v, 3));
2133 int tilex = Int_val (Field (args_v, 4));
2134 int tiley = Int_val (Field (args_v, 5));
2135 char *s = String_val (ptr_v);
2136 struct tile *tile = parse_pointer ("ml_drawtile", s);
2137
2138 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2139 {
2140 int slicey, firstslice;
2141 struct slice *slice;
2142
2143 firstslice = tiley / tile->sliceheight;
2144 slice = &tile->slices[firstslice];
2145 slicey = tiley % tile->sliceheight;
2146
2147 while (disph > 0) {
2148 int dh;
2149
2150 dh = slice->h - slicey;
2151 dh = MIN (disph, dh);
2152 uploadslice (tile, slice);
2153
2154 glBegin (GL_QUADS);
2155 {
2156 glTexCoord2i (tilex, slicey);
2157 glVertex2i (dispx, dispy);
2158
2159 glTexCoord2i (tilex+dispw, slicey);
2160 glVertex2i (dispx+dispw, dispy);
2161
2162 glTexCoord2i (tilex+dispw, slicey+dh);
2163 glVertex2i (dispx+dispw, dispy+dh);
2164
2165 glTexCoord2i (tilex, slicey+dh);
2166 glVertex2i (dispx, dispy+dh);
2167 }
2168 glEnd ();
2169
2170 dispy += dh;
2171 disph -= dh;
2172 slice++;
2173 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2174 slicey = 0;
2175 }
2176 }
2177 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2178 CAMLreturn (Val_unit);
2179 }
2180
2181 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2182 value xoff_v, value yoff_v,
2183 value li_v)
2184 {
2185 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2186 int xoff = Int_val (xoff_v);
2187 int yoff = Int_val (yoff_v);
2188 int noff = Int_val (Field (li_v, 0));
2189 char *targ = String_val (Field (li_v, 1));
2190 int tlen = caml_string_length (Field (li_v, 1));
2191 int hfsize = Int_val (Field (li_v, 2));
2192 char *s = String_val (ptr_v);
2193 int hlmask = Int_val (hlinks_v);
2194 struct page *page = parse_pointer ("ml_postprocess", s);
2195
2196 if (!page->u.ptr) {
2197 /* deal with loadpage failed pages */
2198 goto done;
2199 }
2200
2201 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2202 if (trylock ("ml_postprocess")) {
2203 noff = 0;
2204 goto done;
2205 }
2206 if (hlmask & 2) {
2207 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2208 noff = page->slinkcount;
2209 }
2210 showsel (page, xoff, yoff);
2211 unlock ("ml_postprocess");
2212
2213 done:
2214 CAMLreturn (Val_int (noff));
2215 }
2216
2217 static fz_link *getlink (struct page *page, int x, int y)
2218 {
2219 fz_point p;
2220 fz_matrix ctm;
2221 fz_link *link, *links;
2222
2223 switch (page->type) {
2224 case DPDF:
2225 ctm = trimctm (page->u.pdfpage, page->pdimno);
2226 links = page->u.pdfpage->links;
2227 break;
2228
2229 case DXPS:
2230 ctm = fz_identity;
2231 links = page->u.xpspage->links;
2232 break;
2233
2234 default:
2235 return NULL;
2236 }
2237 p.x = x;
2238 p.y = y;
2239
2240 ctm = fz_concat (ctm, state.pagedims[page->pdimno].ctm);
2241 ctm = fz_invert_matrix (ctm);
2242 p = fz_transform_point (ctm, p);
2243
2244 for (link = links; link; link = link->next) {
2245 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2246 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2247 return link;
2248 }
2249 }
2250 }
2251 return NULL;
2252 }
2253
2254 static void ensuretext (struct page *page)
2255 {
2256 if (state.gen != page->tgen) {
2257 droptext (page);
2258 page->tgen = state.gen;
2259 }
2260 if (!page->text) {
2261 fz_device *tdev;
2262
2263 page->text = fz_new_text_page (state.ctx, fz_infinite_rect);
2264 page->sheet = fz_new_text_sheet (state.ctx);
2265 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2266 fz_run_display_list (page->dlist,
2267 tdev,
2268 pagectm (page),
2269 fz_infinite_bbox, NULL);
2270 qsort (page->text->blocks, page->text->len,
2271 sizeof (*page->text->blocks), compareblocks);
2272 fz_free_device (tdev);
2273 }
2274 }
2275
2276 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2277 {
2278 CAMLparam2 (start_page_v, dir_v);
2279 CAMLlocal1 (ret_v);
2280 int i, dir = Int_val (dir_v);
2281 int start_page = Int_val (start_page_v);
2282 int end_page = dir > 0 ? state.pagecount : -1;
2283
2284 ret_v = Val_int (0);
2285 if (!(state.type == DPDF || state.type == DXPS)) {
2286 goto done;
2287 }
2288
2289 lock ("ml_findpage_with_links");
2290 for (i = start_page + dir; i != end_page; i += dir) {
2291 int found;
2292
2293 switch (state.type) {
2294 case DPDF:
2295 {
2296 pdf_page *page = NULL;
2297
2298 fz_try (state.ctx) {
2299 page = pdf_load_page (state.u.pdf, i);
2300 found = !!page->links;
2301 }
2302 fz_catch (state.ctx) {
2303 found = 0;
2304 }
2305 if (page) {
2306 freepdfpage (page);
2307 }
2308 }
2309 break;
2310 case DXPS:
2311 {
2312 xps_page *page = xps_load_page (state.u.xps, i);
2313 found = !!page->links;
2314 freexpspage (page);
2315 }
2316 break;
2317
2318 default:
2319 ARSERT ("invalid document type");
2320 }
2321
2322 if (found) {
2323 ret_v = caml_alloc_small (1, 1);
2324 Field (ret_v, 0) = Val_int (i);
2325 goto unlock;
2326 }
2327 }
2328 unlock:
2329 unlock ("ml_findpage_with_links");
2330
2331 done:
2332 CAMLreturn (ret_v);
2333 }
2334
2335 enum { dir_first, dir_last};
2336 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2337
2338 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2339 {
2340 CAMLparam2 (ptr_v, dir_v);
2341 CAMLlocal2 (ret_v, pos_v);
2342 struct page *page;
2343 int dirtag, i, slinkindex;
2344 struct slink *found = NULL ,*slink;
2345 char *s = String_val (ptr_v);
2346
2347 page = parse_pointer ("ml_findlink", s);
2348 ret_v = Val_int (0);
2349 if (trylock ("ml_findlink")) {
2350 goto done;
2351 }
2352
2353 ensureslinks (page);
2354
2355 if (Is_block (dir_v)) {
2356 dirtag = Tag_val (dir_v);
2357 switch (dirtag) {
2358 case dir_first_visible:
2359 {
2360 int x0, y0, dir, first_index, last_index;
2361
2362 pos_v = Field (dir_v, 0);
2363 x0 = Int_val (Field (pos_v, 0));
2364 y0 = Int_val (Field (pos_v, 1));
2365 dir = Int_val (Field (pos_v, 2));
2366
2367 if (dir >= 0) {
2368 dir = 1;
2369 first_index = 0;
2370 last_index = page->slinkcount;
2371 }
2372 else {
2373 first_index = page->slinkcount - 1;
2374 last_index = -1;
2375 }
2376
2377 for (i = first_index; i != last_index; i += dir) {
2378 slink = &page->slinks[i];
2379 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2380 found = slink;
2381 break;
2382 }
2383 }
2384 }
2385 break;
2386
2387 case dir_left:
2388 slinkindex = Int_val (Field (dir_v, 0));
2389 found = &page->slinks[slinkindex];
2390 for (i = slinkindex - 1; i >= 0; --i) {
2391 slink = &page->slinks[i];
2392 if (slink->bbox.x0 < found->bbox.x0) {
2393 found = slink;
2394 break;
2395 }
2396 }
2397 break;
2398
2399 case dir_right:
2400 slinkindex = Int_val (Field (dir_v, 0));
2401 found = &page->slinks[slinkindex];
2402 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2403 slink = &page->slinks[i];
2404 if (slink->bbox.x0 > found->bbox.x0) {
2405 found = slink;
2406 break;
2407 }
2408 }
2409 break;
2410
2411 case dir_down:
2412 slinkindex = Int_val (Field (dir_v, 0));
2413 found = &page->slinks[slinkindex];
2414 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2415 slink = &page->slinks[i];
2416 if (slink->bbox.y0 >= found->bbox.y0) {
2417 found = slink;
2418 break;
2419 }
2420 }
2421 break;
2422
2423 case dir_up:
2424 slinkindex = Int_val (Field (dir_v, 0));
2425 found = &page->slinks[slinkindex];
2426 for (i = slinkindex - 1; i >= 0; --i) {
2427 slink = &page->slinks[i];
2428 if (slink->bbox.y0 <= found->bbox.y0) {
2429 found = slink;
2430 break;
2431 }
2432 }
2433 break;
2434 }
2435 }
2436 else {
2437 dirtag = Int_val (dir_v);
2438 switch (dirtag) {
2439 case dir_first:
2440 found = page->slinks;
2441 break;
2442
2443 case dir_last:
2444 if (page->slinks) {
2445 found = page->slinks + (page->slinkcount - 1);
2446 }
2447 break;
2448 }
2449 }
2450 if (found) {
2451 ret_v = caml_alloc_small (2, 1);
2452 Field (ret_v, 0) = Val_int (found - page->slinks);
2453 }
2454
2455 unlock ("ml_findlink");
2456 done:
2457 CAMLreturn (ret_v);
2458 }
2459
2460 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2461
2462 #define LINKTOVAL \
2463 { \
2464 int pageno; \
2465 \
2466 switch (link->dest.kind) { \
2467 case FZ_LINK_GOTO: \
2468 { \
2469 fz_point p; \
2470 \
2471 pageno = link->dest.ld.gotor.page; \
2472 p.x = 0; \
2473 p.y = 0; \
2474 \
2475 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2476 p.y = link->dest.ld.gotor.lt.y; \
2477 p = fz_transform_point (pdim->lctm, p); \
2478 } \
2479 tup_v = caml_alloc_tuple (2); \
2480 ret_v = caml_alloc_small (1, ugoto); \
2481 Field (tup_v, 0) = Val_int (pageno); \
2482 Field (tup_v, 1) = Val_int (p.y); \
2483 Field (ret_v, 0) = tup_v; \
2484 } \
2485 break; \
2486 \
2487 case FZ_LINK_URI: \
2488 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2489 ret_v = caml_alloc_small (1, uuri); \
2490 Field (ret_v, 0) = str_v; \
2491 break; \
2492 \
2493 case FZ_LINK_LAUNCH: \
2494 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2495 ret_v = caml_alloc_small (1, ulaunch); \
2496 Field (ret_v, 0) = str_v; \
2497 break; \
2498 \
2499 case FZ_LINK_NAMED: \
2500 str_v = caml_copy_string (link->dest.ld.named.named); \
2501 ret_v = caml_alloc_small (1, unamed); \
2502 Field (ret_v, 0) = str_v; \
2503 break; \
2504 \
2505 case FZ_LINK_GOTOR: \
2506 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2507 pageno = link->dest.ld.gotor.page; \
2508 tup_v = caml_alloc_tuple (2); \
2509 ret_v = caml_alloc_small (1, uremote); \
2510 Field (tup_v, 0) = str_v; \
2511 Field (tup_v, 1) = Val_int (pageno); \
2512 Field (ret_v, 0) = tup_v; \
2513 break; \
2514 \
2515 default: \
2516 { \
2517 char buf[80]; \
2518 \
2519 snprintf (buf, sizeof (buf), \
2520 "unhandled link kind %d", link->dest.kind); \
2521 str_v = caml_copy_string (buf); \
2522 ret_v = caml_alloc_small (1, uunexpected); \
2523 Field (ret_v, 0) = str_v; \
2524 } \
2525 break; \
2526 } \
2527 }
2528
2529 CAMLprim value ml_getlink (value ptr_v, value n_v)
2530 {
2531 CAMLparam2 (ptr_v, n_v);
2532 CAMLlocal3 (ret_v, tup_v, str_v);
2533 fz_link *link;
2534 struct page *page;
2535 struct pagedim *pdim;
2536 char *s = String_val (ptr_v);
2537
2538 ret_v = Val_int (0);
2539 if (trylock ("ml_getlink")) {
2540 goto done;
2541 }
2542
2543 page = parse_pointer ("ml_getlink", s);
2544 ensureslinks (page);
2545 pdim = &state.pagedims[page->pdimno];
2546 link = page->slinks[Int_val (n_v)].link;
2547 LINKTOVAL;
2548
2549 unlock ("ml_getlink");
2550 done:
2551 CAMLreturn (ret_v);
2552 }
2553
2554 CAMLprim value ml_getlinkcount (value ptr_v)
2555 {
2556 CAMLparam1 (ptr_v);
2557 struct page *page;
2558 char *s = String_val (ptr_v);
2559
2560 page = parse_pointer ("ml_getlinkcount", s);
2561 CAMLreturn (Val_int (page->slinkcount));
2562 }
2563
2564 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2565 {
2566 CAMLparam2 (ptr_v, n_v);
2567 CAMLlocal1 (ret_v);
2568 struct page *page;
2569 struct slink *slink;
2570 char *s = String_val (ptr_v);
2571
2572 page = parse_pointer ("ml_getlinkrect", s);
2573 ret_v = caml_alloc_tuple (4);
2574 if (trylock ("ml_getlinkrect")) {
2575 Field (ret_v, 0) = Val_int (0);
2576 Field (ret_v, 1) = Val_int (0);
2577 Field (ret_v, 2) = Val_int (0);
2578 Field (ret_v, 3) = Val_int (0);
2579 goto done;
2580 }
2581 ensureslinks (page);
2582
2583 slink = &page->slinks[Int_val (n_v)];
2584 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2585 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2586 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2587 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2588 unlock ("ml_getlinkrect");
2589
2590 done:
2591 CAMLreturn (ret_v);
2592 }
2593
2594 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2595 {
2596 CAMLparam3 (ptr_v, x_v, y_v);
2597 CAMLlocal3 (ret_v, tup_v, str_v);
2598 fz_link *link;
2599 struct page *page;
2600 char *s = String_val (ptr_v);
2601 int x = Int_val (x_v), y = Int_val (y_v);
2602 struct pagedim *pdim;
2603
2604 ret_v = Val_int (0);
2605 if (trylock ("ml_whatsunder")) {
2606 goto done;
2607 }
2608
2609 page = parse_pointer ("ml_whatsunder", s);
2610 pdim = &state.pagedims[page->pdimno];
2611 x += pdim->bounds.x0;
2612 y += pdim->bounds.y0;
2613 link = getlink (page, x, y);
2614 if (link) {
2615 LINKTOVAL;
2616 }
2617 else {
2618 fz_rect *b;
2619 fz_text_block *block;
2620
2621 ensuretext (page);
2622 for (block = page->text->blocks;
2623 block < page->text->blocks + page->text->len;
2624 ++block) {
2625 fz_text_line *line;
2626
2627 b = &block->bbox;
2628 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2629 continue;
2630
2631 for (line = block->lines;
2632 line < block->lines + block->len;
2633 ++line) {
2634 fz_text_span *span;
2635
2636 b = &line->bbox;
2637 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2638 continue;
2639
2640 for (span = line->spans;
2641 span < line->spans + line->len;
2642 ++span) {
2643 fz_text_char *ch;
2644
2645 b = &span->bbox;
2646 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2647 continue;
2648
2649 for (ch = span->text; ch < span->text + span->len; ++ch) {
2650 b = &ch->bbox;
2651
2652 if (x >= b->x0 && x <= b->x1
2653 && y >= b->y0 && y <= b->y1) {
2654 const char *n2 =
2655 span->style->font && span->style->font->name
2656 ? span->style->font->name
2657 : "Span has no font name"
2658 ;
2659 FT_FaceRec *face = span->style->font->ft_face;
2660 if (face && face->family_name) {
2661 char *s;
2662 char *n1 = face->family_name;
2663 size_t l1 = strlen (n1);
2664 size_t l2 = strlen (n2);
2665
2666 if (l1 != l2 || memcmp (n1, n2, l1)) {
2667 s = malloc (l1 + l2 + 2);
2668 if (s) {
2669 memcpy (s, n2, l2);
2670 s[l2] = '=';
2671 memcpy (s + l2 + 1, n1, l1 + 1);
2672 str_v = caml_copy_string (s);
2673 free (s);
2674 }
2675 }
2676 }
2677 if (str_v == 0) {
2678 str_v = caml_copy_string (n2);
2679 }
2680 ret_v = caml_alloc_small (1, utext);
2681 Field (ret_v, 0) = str_v;
2682 goto unlock;
2683 }
2684 }
2685 }
2686 }
2687 }
2688 }
2689 unlock:
2690 unlock ("ml_whatsunder");
2691
2692 done:
2693 CAMLreturn (ret_v);
2694 }
2695
2696 CAMLprim value ml_seltext (value ptr_v, value rect_v)
2697 {
2698 CAMLparam2 (ptr_v, rect_v);
2699 fz_rect *b;
2700 struct page *page;
2701 struct pagedim *pdim;
2702 int i, x0, x1, y0, y1;
2703 char *s = String_val (ptr_v);
2704 int fi = 0, li = 0;
2705 fz_text_block *block;
2706 fz_text_span *span, *fspan, *lspan;
2707 fz_text_line *line, *fline = NULL, *lline = NULL;
2708
2709 if (trylock ("ml_seltext")) {
2710 goto done;
2711 }
2712
2713 page = parse_pointer ("ml_seltext", s);
2714 ensuretext (page);
2715
2716 pdim = &state.pagedims[page->pdimno];
2717 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
2718 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
2719 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
2720 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
2721
2722 if (0) {
2723 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2724 glColor3ub (128, 128, 128);
2725 glRecti (x0, y0, x1, y1);
2726 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2727 }
2728
2729 fspan = lspan = NULL;
2730
2731 for (block = page->text->blocks;
2732 block < page->text->blocks + page->text->len;
2733 ++block) {
2734 for (line = block->lines;
2735 line < block->lines + block->len;
2736 ++line) {
2737 for (span = line->spans;
2738 span < line->spans + line->len;
2739 ++span) {
2740 for (i = 0; i < span->len; ++i) {
2741 b = &span->text[i].bbox;
2742 int selected = 0;
2743
2744 if (x0 >= b->x0 && x0 <= b->x1
2745 && y0 >= b->y0 && y0 <= b->y1) {
2746 fspan = span;
2747 fline = line;
2748 fi = i;
2749 selected = 1;
2750 }
2751 if (x1 >= b->x0 && x1 <= b->x1
2752 && y1 >= b->y0 && y1 <= b->y1) {
2753 lspan = span;
2754 lline = line;
2755 li = i;
2756 selected = 1;
2757 }
2758 if (0 && selected) {
2759 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2760 glColor3ub (128, 128, 128);
2761 glRecti (b->x0, b->y0, b->x1, b->y1);
2762 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2763 }
2764 }
2765 }
2766 }
2767 }
2768 if (y1 < y0 || x1 < x0) {
2769 int swap = 0;
2770
2771 if (fspan == lspan) {
2772 swap = 1;
2773 }
2774 else {
2775 if (y1 < y0) {
2776 if (fline != lline) {
2777 swap = 1;
2778 }
2779 }
2780 }
2781
2782 if (swap) {
2783 i = fi;
2784 span = fspan;
2785
2786 fi = li;
2787 fspan = lspan;
2788
2789 li = i;
2790 lspan = span;
2791 }
2792 }
2793
2794 page->fmark.i = fi;
2795 page->fmark.span = fspan;
2796
2797 page->lmark.i = li;
2798 page->lmark.span = lspan;
2799
2800 unlock ("ml_seltext");
2801
2802 done:
2803 CAMLreturn (Val_unit);
2804 }
2805
2806 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
2807 {
2808 char buf[4];
2809 int i, len, ret;
2810
2811 for (i = a; i <= b; ++i) {
2812 len = fz_runetochar (buf, span->text[i].c);
2813 ret = fwrite (buf, len, 1, f);
2814
2815 if (ret != 1) {
2816 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
2817 len, ret, strerror (errno));
2818 return -1;
2819 }
2820 }
2821 return 0;
2822 }
2823
2824 #ifdef __CYGWIN__
2825 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
2826 {
2827 caml_failwith ("ml_popen not implemented under Cygwin");
2828 }
2829 #else
2830 CAMLprim value ml_popen (value command_v, value fds_v)
2831 {
2832 CAMLparam2 (command_v, fds_v);
2833 CAMLlocal2 (l_v, tup_v);
2834 int ret;
2835 char *msg = NULL;
2836 value earg_v = Nothing;
2837 posix_spawnattr_t attr;
2838 posix_spawn_file_actions_t fa;
2839 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
2840
2841 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
2842 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
2843 }
2844
2845 if ((ret = posix_spawnattr_init (&attr)) != 0) {
2846 msg = "posix_spawnattr_init";
2847 goto fail1;
2848 }
2849
2850 #ifdef POSIX_SPAWN_USEVFORK
2851 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
2852 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
2853 goto fail;
2854 }
2855 #endif
2856
2857 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
2858 int fd1, fd2;
2859
2860 tup_v = Field (l_v, 0);
2861 fd1 = Int_val (Field (tup_v, 0));
2862 fd2 = Int_val (Field (tup_v, 1));
2863 if (fd2 < 0) {
2864 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
2865 msg = "posix_spawn_file_actions_addclose";
2866 earg_v = tup_v;
2867 goto fail;
2868 }
2869 }
2870 else {
2871 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
2872 msg = "posix_spawn_file_actions_adddup2";
2873 earg_v = tup_v;
2874 goto fail;
2875 }
2876 }
2877 }
2878
2879 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
2880 msg = "posix_spawn";
2881 goto fail;
2882 }
2883
2884 fail:
2885 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
2886 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
2887 }
2888
2889 fail1:
2890 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
2891 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
2892 strerror (ret));
2893 }
2894
2895 if (msg)
2896 unix_error (ret, msg, earg_v);
2897
2898 CAMLreturn (Val_unit);
2899 }
2900 #endif
2901
2902 CAMLprim value ml_copysel (value fd_v, value ptr_v)
2903 {
2904 CAMLparam1 (ptr_v);
2905 FILE *f;
2906 int seen = 0;
2907 struct page *page;
2908 fz_text_line *line;
2909 fz_text_span *span;
2910 fz_text_block *block;
2911 int fd = Int_val (fd_v);
2912 char *s = String_val (ptr_v);
2913
2914 if (trylock ("ml_copysel")) {
2915 goto done;
2916 }
2917
2918 page = parse_pointer ("ml_sopysel", s);
2919
2920 if (!page->fmark.span || !page->lmark.span) {
2921 fprintf (stderr, "nothing to copy\n");
2922 goto unlock;
2923 }
2924
2925 f = fdopen (fd, "w");
2926 if (!f) {
2927 fprintf (stderr, "failed to fopen sel pipe: %s\n",
2928 strerror (errno));
2929 f = stdout;
2930 }
2931
2932 for (block = page->text->blocks;
2933 block < page->text->blocks + page->text->len;
2934 ++block) {
2935 for (line = block->lines;
2936 line < block->lines + block->len;
2937 ++line) {
2938 for (span = line->spans;
2939 span < line->spans + line->len;
2940 ++span) {
2941 int a, b;
2942
2943 seen |= span == page->fmark.span || span == page->lmark.span;
2944 a = span == page->fmark.span ? page->fmark.i : 0;
2945 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
2946
2947 if (seen) {
2948 if (pipespan (f, span, a, b)) {
2949 goto close;
2950 }
2951 if (span == line->spans + line->len - 1) {
2952 if (putc ('\n', f) == EOF) {
2953 fprintf (stderr,
2954 "failed break line on sel pipe: %s\n",
2955 strerror (errno));
2956 goto close;
2957 }
2958 }
2959 if (span == page->lmark.span) {
2960 goto endloop;
2961 }
2962 }
2963 }
2964 }
2965 }
2966 endloop:
2967 page->lmark.span = NULL;
2968 page->fmark.span = NULL;
2969
2970 close:
2971 if (f != stdout) {
2972 int ret = fclose (f);
2973 fd = -1;
2974 if (ret == -1) {
2975 if (errno != ECHILD) {
2976 fprintf (stderr, "failed to close sel pipe: %s\n",
2977 strerror (errno));
2978 }
2979 }
2980 }
2981 unlock:
2982 unlock ("ml_copysel");
2983
2984 done:
2985 if (fd >= 0) {
2986 if (close (fd)) {
2987 fprintf (stderr, "failed to close sel pipe: %s\n",
2988 strerror (errno));
2989 }
2990 }
2991 CAMLreturn (Val_unit);
2992 }
2993
2994 CAMLprim value ml_getpdimrect (value pagedimno_v)
2995 {
2996 CAMLparam1 (pagedimno_v);
2997 CAMLlocal1 (ret_v);
2998 int pagedimno = Int_val (pagedimno_v);
2999 fz_rect box;
3000
3001 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3002 if (trylock ("ml_getpdimrect")) {
3003 box = fz_empty_rect;
3004 }
3005 else {
3006 box = state.pagedims[pagedimno].mediabox;
3007 unlock ("ml_getpdimrect");
3008 }
3009
3010 Store_double_field (ret_v, 0, box.x0);
3011 Store_double_field (ret_v, 1, box.x1);
3012 Store_double_field (ret_v, 2, box.y0);
3013 Store_double_field (ret_v, 3, box.y1);
3014
3015 CAMLreturn (ret_v);
3016 }
3017
3018 static double getmaxw (void)
3019 {
3020 int i;
3021 struct pagedim *p;
3022 double maxw = 0.0;
3023
3024 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3025 double x0, x1, w;
3026
3027 x0 = MIN (p->mediabox.x0, p->mediabox.x1);
3028 x1 = MAX (p->mediabox.x0, p->mediabox.x1);
3029
3030 w = x1 - x0;
3031 maxw = MAX (w, maxw);
3032 }
3033 return maxw;
3034 }
3035
3036 CAMLprim value ml_getmaxw (value unit_v)
3037 {
3038 CAMLparam1 (unit_v);
3039 CAMLlocal1 (ret_v);
3040 double maxw = 0.0;
3041
3042 if (trylock ("ml_getmaxw")) {
3043 goto done;
3044 }
3045 maxw = getmaxw ();
3046 unlock ("ml_getmaxw");
3047 done:
3048 ret_v = caml_copy_double (maxw);
3049 CAMLreturn (ret_v);
3050 }
3051
3052 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3053 value dw_v, value cols_v)
3054 {
3055 CAMLparam3 (winw_v, winh_v, dw_v);
3056 CAMLlocal1 (ret_v);
3057 int i;
3058 double zoom = 1.0;
3059 double maxw = 0.0, maxh = 0.0;
3060 struct pagedim *p;
3061 double winw = Int_val (winw_v);
3062 double winh = Int_val (winh_v);
3063 double dw = Int_val (dw_v);
3064 double cols = Int_val (cols_v);
3065 double pw = 1.0, ph = 1.0, aspect;
3066
3067 if (trylock ("ml_zoom_for_height")) {
3068 goto done;
3069 }
3070
3071 if (state.proportional) {
3072 maxw = getmaxw () / cols;
3073 }
3074
3075 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3076 double x0, x1, y0, y1, w, h, scaledh, scale;
3077 fz_rect rect;
3078
3079 rect = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
3080 p->mediabox);
3081 x0 = MIN (rect.x0, rect.x1);
3082 x1 = MAX (rect.x0, rect.x1);
3083 y0 = MIN (rect.y0, rect.y1);
3084 y1 = MAX (rect.y0, rect.y1);
3085
3086 w = (x1 - x0) / cols;
3087 h = y1 - y0;
3088
3089 if (state.proportional) {
3090 scale = w / maxw;
3091 scaledh = h * scale;
3092 }
3093 else {
3094 scale = 1.0;
3095 scaledh = h;
3096 }
3097
3098 if (scaledh > maxh) {
3099 maxh = scaledh;
3100 ph = scaledh;
3101 pw = w * scale;
3102 }
3103 }
3104
3105 aspect = pw / ph;
3106 zoom = (winh * aspect + dw) / winw;
3107
3108 unlock ("ml_zoom_for_height");
3109 done:
3110 ret_v = caml_copy_double (zoom);
3111 CAMLreturn (ret_v);
3112 }
3113
3114 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3115 {
3116 CAMLparam4 (pt_v, x_v, y_v, string_v);
3117 CAMLlocal1 (ret_v);
3118 int pt = Int_val(pt_v);
3119 int x = Int_val (x_v);
3120 int y = Int_val (y_v);
3121 double w;
3122
3123 w = draw_string (state.face, pt, x, y, String_val (string_v));
3124 ret_v = caml_copy_double (w);
3125 CAMLreturn (ret_v);
3126 }
3127
3128 CAMLprim value ml_measure_string (value pt_v, value string_v)
3129 {
3130 CAMLparam2 (pt_v, string_v);
3131 CAMLlocal1 (ret_v);
3132 int pt = Int_val (pt_v);
3133 double w;
3134
3135 w = measure_string (state.face, pt, String_val (string_v));
3136 ret_v = caml_copy_double (w);
3137 CAMLreturn (ret_v);
3138 }
3139
3140 CAMLprim value ml_getpagebox (value opaque_v)
3141 {
3142 CAMLparam1 (opaque_v);
3143 CAMLlocal1 (ret_v);
3144 fz_bbox bbox;
3145 fz_device *dev;
3146 char *s = String_val (opaque_v);
3147 struct page *page = parse_pointer ("ml_getpagebox", s);
3148
3149 ret_v = caml_alloc_tuple (4);
3150 dev = fz_new_bbox_device (state.ctx, &bbox);
3151 dev->hints |= FZ_IGNORE_SHADE;
3152
3153 switch (page->type) {
3154 case DPDF:
3155 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, pagectm (page), NULL);
3156 break;
3157
3158 case DXPS:
3159 xps_run_page (state.u.xps, page->u.xpspage, dev, pagectm (page), NULL);
3160 break;
3161
3162 default:
3163 bbox = fz_infinite_bbox;
3164 break;
3165 }
3166
3167 fz_free_device (dev);
3168 Field (ret_v, 0) = Val_int (bbox.x0);
3169 Field (ret_v, 1) = Val_int (bbox.y0);
3170 Field (ret_v, 2) = Val_int (bbox.x1);
3171 Field (ret_v, 3) = Val_int (bbox.y1);
3172
3173 CAMLreturn (ret_v);
3174 }
3175
3176 CAMLprim value ml_setaalevel (value level_v)
3177 {
3178 CAMLparam1 (level_v);
3179
3180 state.aalevel = Int_val (level_v);
3181 CAMLreturn (Val_unit);
3182 }
3183
3184 #undef pixel
3185 #include <X11/Xlib.h>
3186 #include <GL/glx.h>
3187
3188 static struct {
3189 Display *dpy;
3190 GLXContext ctx;
3191 GLXDrawable drawable;
3192 } glx;
3193
3194 #include "keysym2ucs.c"
3195
3196 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3197 {
3198 CAMLparam1 (keysym_v);
3199 CAMLlocal1 (str_v);
3200 KeySym keysym = Int_val (keysym_v);
3201 Rune rune;
3202 int len;
3203 char buf[5];
3204
3205 rune = keysym2ucs (keysym);
3206 len = fz_runetochar (buf, rune);
3207 buf[len] = 0;
3208 str_v = caml_copy_string (buf);
3209 CAMLreturn (str_v);
3210 }
3211
3212 CAMLprim value ml_glx (value win_v)
3213 {
3214 CAMLparam1 (win_v);
3215 XVisualInfo *visual;
3216 int screen, wid = Int_val (win_v);
3217 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3218
3219 glx.dpy = XOpenDisplay (NULL);
3220 if (!glx.dpy) {
3221 caml_failwith ("XOpenDisplay");
3222 }
3223
3224 screen = DefaultScreen (glx.dpy);
3225 visual = glXChooseVisual (glx.dpy, screen, attributes);
3226 if (!visual) {
3227 XCloseDisplay (glx.dpy);
3228 glx.dpy = NULL;
3229 caml_failwith ("glXChooseVisual");
3230 }
3231
3232 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3233 XFree (visual);
3234 if (!glx.ctx) {
3235 XCloseDisplay (glx.dpy);
3236 glx.dpy = NULL;
3237 caml_failwith ("glXCreateContext");
3238 }
3239
3240 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3241 glXDestroyContext (glx.dpy, glx.ctx);
3242 XCloseDisplay (glx.dpy);
3243 glx.dpy = NULL;
3244 glx.ctx = NULL;
3245 caml_failwith ("glXMakeCurrent");
3246 }
3247 glx.drawable = wid;
3248 CAMLreturn (Val_unit);
3249 }
3250
3251 CAMLprim value ml_swapb (value unit_v)
3252 {
3253 CAMLparam1 (unit_v);
3254 glXSwapBuffers (glx.dpy, glx.drawable);
3255 CAMLreturn (Val_unit);
3256 }
3257
3258 CAMLprim value ml_glxsync (value unit_v)
3259 {
3260 CAMLparam1 (unit_v);
3261 if (glx.dpy && glx.ctx) {
3262 glXWaitX ();
3263 glXWaitGL ();
3264 }
3265 CAMLreturn (Val_unit);
3266 }
3267
3268 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3269 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3270
3271 CAMLprim value ml_platform (value unit_v)
3272 {
3273 CAMLparam1 (unit_v);
3274 int platid = piunknown;
3275
3276 #if defined __linux__
3277 platid = pilinux;
3278 #elif defined __CYGWIN__
3279 platid = picygwin;
3280 #elif defined __DragonFly__
3281 platid = pidragonflybsd;
3282 #elif defined __FreeBSD__
3283 platid = pifreebsd;
3284 #elif defined __OpenBSD__
3285 platid = piopenbsd;
3286 #elif defined __NetBSD__
3287 platid = pinetbsd;
3288 #elif defined __sun__
3289 platid = pisun;
3290 #elif defined __APPLE__
3291 platid = piosx;
3292 #endif
3293 CAMLreturn (Val_int (platid));
3294 }
3295
3296 CAMLprim value ml_cloexec (value fd_v)
3297 {
3298 CAMLparam1 (fd_v);
3299 int fd = Int_val (fd_v);
3300
3301 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3302 uerror ("fcntl", Nothing);
3303 }
3304 CAMLreturn (Val_unit);
3305 }
3306
3307 CAMLprim value ml_init (value pipe_v, value params_v)
3308 {
3309 CAMLparam2 (pipe_v, params_v);
3310 CAMLlocal2 (trim_v, fuzz_v);
3311 int ret;
3312 int texcount;
3313 char *fontpath;
3314 int colorspace;
3315 int mustoresize;
3316 struct sigaction sa;
3317
3318 state.cr = Int_val (Field (pipe_v, 0));
3319 state.cw = Int_val (Field (pipe_v, 1));
3320 state.rotate = Int_val (Field (params_v, 0));
3321 state.proportional = Bool_val (Field (params_v, 1));
3322 trim_v = Field (params_v, 2);
3323 texcount = Int_val (Field (params_v, 3));
3324 state.sliceheight = Int_val (Field (params_v, 4));
3325 mustoresize = Int_val (Field (params_v, 5));
3326 colorspace = Int_val (Field (params_v, 6));
3327 fontpath = String_val (Field (params_v, 7));
3328 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3329
3330 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3331
3332 state.trimmargins = Bool_val (Field (trim_v, 0));
3333 fuzz_v = Field (trim_v, 1);
3334 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3335 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3336 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3337 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3338
3339 set_tex_params (colorspace);
3340
3341 if (*fontpath) {
3342 state.face = load_font (fontpath);
3343 }
3344 else {
3345 unsigned int len;
3346 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3347
3348 state.face = load_builtin_font (base, len);
3349 }
3350 if (!state.face) _exit (1);
3351
3352 realloctexts (texcount);
3353
3354 #ifdef __CYGWIN__
3355 sa.sa_handler = SIG_IGN;
3356 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
3357 #else
3358 sa.sa_handler = SIG_DFL;
3359 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
3360 #endif
3361 if (sigemptyset (&sa.sa_mask)) {
3362 err (1, "sigemptyset");
3363 }
3364 if (sigaction (SIGCHLD, &sa, NULL)) {
3365 err (1, "sigaction");
3366 }
3367
3368 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
3369 if (ret) {
3370 errx (1, "pthread_create: %s", strerror (ret));
3371 }
3372
3373 CAMLreturn (Val_unit);
3374 }
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