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7801b8b91fdddfadc2f1f6c11a593582882adedb
[llpp.git] / link.c
blob7801b8b91fdddfadc2f1f6c11a593582882adedb
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 <stdarg.h>
24 #include <limits.h>
25
26 #include <GL/gl.h>
27
28 #include <caml/fail.h>
29 #include <caml/alloc.h>
30 #include <caml/memory.h>
31 #include <caml/unixsupport.h>
32
33 #include <fitz.h>
34 #include <mupdf.h>
35 #include <mupdf-internal.h>
36 #include <muxps.h>
37 #include <muxps-internal.h>
38 #include <mucbz.h>
39
40 #include FT_FREETYPE_H
41
42 #define PIGGYBACK
43
44 #ifndef __USE_GNU
45 extern char **environ;
46 #endif
47
48 #define MIN(a,b) ((a) < (b) ? (a) : (b))
49 #define MAX(a,b) ((a) > (b) ? (a) : (b))
50
51 #if defined __GNUC__
52 #define NORETURN_ATTR __attribute__ ((noreturn))
53 #define UNUSED_ATTR __attribute__ ((unused))
54 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
55 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
56 #else
57 #define NORETURN_ATTR
58 #define UNUSED_ATTR
59 #define OPTIMIZE_ATTR(n)
60 #define GCC_FMT_ATTR(a, b)
61 #endif
62
63 #define FMT_s "zu"
64
65 #define FMT_ptr "p"
66 #define FMT_ptr_cast(p) (p)
67 #define FMT_ptr_cast2(p) (p)
68
69 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
70 err (int exitcode, const char *fmt, ...)
71 {
72 va_list ap;
73 int savederrno;
74
75 savederrno = errno;
76 va_start (ap, fmt);
77 vfprintf (stderr, fmt, ap);
78 va_end (ap);
79 fprintf (stderr, ": %s\n", strerror (savederrno));
80 fflush (stderr);
81 _exit (exitcode);
82 }
83
84 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
85 errx (int exitcode, const char *fmt, ...)
86 {
87 va_list ap;
88
89 va_start (ap, fmt);
90 vfprintf (stderr, fmt, ap);
91 va_end (ap);
92 fputc ('\n', stderr);
93 fflush (stderr);
94 _exit (exitcode);
95 }
96
97 #ifndef GL_TEXTURE_RECTANGLE_ARB
98 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
99 #endif
100
101 #ifndef GL_BGRA
102 #define GL_BGRA 0x80E1
103 #endif
104
105 #ifndef GL_UNSIGNED_INT_8_8_8_8
106 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
107 #endif
108
109 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
110 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
111 #endif
112
113 #if 0
114 #define lprintf printf
115 #else
116 #define lprintf(...)
117 #endif
118
119 #define ARSERT(cond) for (;;) { \
120 if (!(cond)) { \
121 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
122 } \
123 break; \
124 }
125
126 struct slice {
127 int h;
128 int texindex;
129 };
130
131 struct tile {
132 int x, y, w, h;
133 int slicecount;
134 int sliceheight;
135 struct pbo *pbo;
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_irect bounds;
146 fz_rect pagebox;
147 fz_rect mediabox;
148 fz_matrix ctm, zoomctm, lctm, tctm;
149 };
150
151 struct slink {
152 fz_irect 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_irect 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
231 GLuint stid;
232
233 int pbo_usable;
234 void (*glBindBufferARB) (GLenum, GLuint);
235 GLboolean (*glUnmapBufferARB) (GLenum);
236 void *(*glMapBufferARB) (GLenum, GLenum);
237 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
238 void (*glGenBuffersARB) (GLsizei, GLuint *);
239 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
240 } state;
241
242 struct pbo {
243 GLuint id;
244 void *ptr;
245 size_t size;
246 };
247
248 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
249 {
250 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
251 }
252
253 static void UNUSED_ATTR debug_bbox (const char *cap, fz_irect r)
254 {
255 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
256 }
257
258 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
259 {
260 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
261 m.a, m.b, m.c, m.d, m.e, m.f);
262 }
263
264 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
265
266 static void lock (const char *cap)
267 {
268 int ret = pthread_mutex_lock (&mutex);
269 if (ret) {
270 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
271 }
272 }
273
274 static void unlock (const char *cap)
275 {
276 int ret = pthread_mutex_unlock (&mutex);
277 if (ret) {
278 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
279 }
280 }
281
282 static int trylock (const char *cap)
283 {
284 int ret = pthread_mutex_trylock (&mutex);
285 if (ret && ret != EBUSY) {
286 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
287 }
288 return ret == EBUSY;
289 }
290
291 static void *parse_pointer (const char *cap, const char *s)
292 {
293 int ret;
294 void *ptr;
295
296 ret = sscanf (s, "%" FMT_ptr, FMT_ptr_cast (&ptr));
297 if (ret != 1) {
298 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
299 }
300 return ptr;
301 }
302
303 static double now (void)
304 {
305 struct timeval tv;
306
307 if (gettimeofday (&tv, NULL)) {
308 err (1, "gettimeofday");
309 }
310 return tv.tv_sec + tv.tv_usec*1e-6;
311 }
312
313 static int hasdata (void)
314 {
315 int ret, avail;
316 ret = ioctl (state.cr, FIONREAD, &avail);
317 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
318 return avail > 0;
319 }
320
321 CAMLprim value ml_hasdata (value fd_v)
322 {
323 CAMLparam1 (fd_v);
324 int ret, avail;
325
326 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
327 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
328 CAMLreturn (Val_bool (avail > 0));
329 }
330
331 static void readdata (void *p, int size)
332 {
333 ssize_t n;
334
335 again:
336 n = read (state.cr, p, size);
337 if (n < 0) {
338 if (errno == EINTR) goto again;
339 err (1, "read (req %d, ret %zd)", size, n);
340 }
341 if (n - size) {
342 if (!n) errx (1, "EOF while reading");
343 errx (1, "read (req %d, ret %zd)", size, n);
344 }
345 }
346
347 static void writedata (char *p, int size)
348 {
349 char buf[4];
350 ssize_t n;
351
352 buf[0] = (size >> 24) & 0xff;
353 buf[1] = (size >> 16) & 0xff;
354 buf[2] = (size >> 8) & 0xff;
355 buf[3] = (size >> 0) & 0xff;
356
357 n = write (state.cw, buf, 4);
358 if (n != 4) {
359 if (!n) errx (1, "EOF while writing length");
360 err (1, "write %zd", n);
361 }
362
363 n = write (state.cw, p, size);
364 if (n - size) {
365 if (!n) errx (1, "EOF while writing data");
366 err (1, "write (req %d, ret %zd)", size, n);
367 }
368 }
369
370 static int readlen (void)
371 {
372 unsigned char p[4];
373
374 readdata (p, 4);
375 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
376 }
377
378 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
379 {
380 int size = 200, len;
381 va_list ap;
382 char *buf;
383
384 buf = malloc (size);
385 for (;;) {
386 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
387
388 va_start (ap, fmt);
389 len = vsnprintf (buf, size, fmt, ap);
390 va_end (ap);
391
392 if (len > -1 && len < size) {
393 writedata (buf, len);
394 break;
395 }
396
397 if (len > -1) {
398 size = len + 1;
399 }
400 else {
401 size *= 2;
402 }
403 buf = realloc (buf, size);
404 }
405 free (buf);
406 }
407
408 static void closepdf (void)
409 {
410 if (state.u.pdf) {
411 pdf_close_document (state.u.pdf);
412 state.u.pdf = NULL;
413 }
414 }
415
416 static void closexps (void)
417 {
418 if (state.u.xps) {
419 xps_close_document (state.u.xps);
420 state.u.xps = NULL;
421 }
422 }
423
424 static void closecbz (void)
425 {
426 if (state.u.cbz) {
427 cbz_close_document (state.u.cbz);
428 state.u.cbz = NULL;
429 }
430 }
431
432 static void freepdfpage (void *ptr)
433 {
434 pdf_free_page (state.u.pdf, ptr);
435 }
436
437 static void freeemptyxxxpage (void *ptr)
438 {
439 (void) ptr;
440 }
441
442 static void freexpspage (void *ptr)
443 {
444 xps_free_page (state.u.xps, ptr);
445 }
446
447 static void freecbzpage (void *ptr)
448 {
449 cbz_free_page (state.u.cbz, ptr);
450 }
451
452 static void openxref (char *filename, char *password)
453 {
454 int i, len;
455
456 for (i = 0; i < state.texcount; ++i) {
457 state.texowners[i].w = -1;
458 state.texowners[i].slice = NULL;
459 }
460
461 if (state.closedoc) state.closedoc ();
462
463 len = strlen (filename);
464
465 state.type = DPDF;
466 if (len > 4) {
467 char ext[4];
468
469 ext[0] = tolower ((int) filename[len-3]);
470 ext[1] = tolower ((int) filename[len-2]);
471 ext[2] = tolower ((int) filename[len-1]);
472
473 /**/ if (ext[0] == 'x' && ext[1] == 'p' && ext[2] == 's') {
474 state.type = DXPS;
475 }
476 else if (ext[0] == 'c' && ext[1] == 'b' && ext[2] == 'z') {
477 state.type = DCBZ;
478 }
479 }
480
481 if (state.pagedims) {
482 free (state.pagedims);
483 state.pagedims = NULL;
484 }
485 state.pagedimcount = 0;
486
487 fz_set_aa_level (state.ctx, state.aalevel);
488 switch (state.type) {
489 case DPDF:
490 state.u.pdf = pdf_open_document (state.ctx, filename);
491 if (pdf_needs_password (state.u.pdf)) {
492 int okay = pdf_authenticate_password (state.u.pdf, password);
493 if (!okay) {
494 errx (1, "invalid password");
495 }
496 }
497 state.pagecount = pdf_count_pages (state.u.pdf);
498 state.closedoc = closepdf;
499 state.freepage = freepdfpage;
500 break;
501
502 case DXPS:
503 state.u.xps = xps_open_document (state.ctx, filename);
504 state.pagecount = xps_count_pages (state.u.xps);
505 state.closedoc = closexps;
506 state.freepage = freexpspage;
507 break;
508
509 case DCBZ:
510 state.u.cbz = cbz_open_document (state.ctx, filename);
511 state.pagecount = cbz_count_pages (state.u.cbz);
512 state.closedoc = closecbz;
513 state.freepage = freecbzpage;
514 break;
515 }
516 }
517
518 static void pdfinfo (void)
519 {
520 if (state.type == DPDF) {
521 pdf_obj *infoobj;
522
523 printd ("info PDF version\t%d.%d",
524 state.u.pdf->version / 10, state.u.pdf->version % 10);
525
526 infoobj = pdf_dict_gets (state.u.pdf->trailer, "Info");
527 if (infoobj) {
528 int i;
529 char *s;
530 char *items[] = { "Title", "Author", "Creator",
531 "Producer", "CreationDate" };
532
533 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
534 pdf_obj *obj = pdf_dict_gets (infoobj, items[i]);
535 s = pdf_to_utf8 (state.u.pdf, obj);
536 if (*s) {
537 if (i == 0) {
538 printd ("title %s", s);
539 }
540 printd ("info %s\t%s", items[i], s);
541 }
542 fz_free (state.ctx, s);
543 }
544 }
545 printd ("infoend");
546 }
547 }
548
549 static void unlinktile (struct tile *tile)
550 {
551 int i;
552
553 for (i = 0; i < tile->slicecount; ++i) {
554 struct slice *s = &tile->slices[i];
555
556 if (s->texindex != -1) {
557 if (state.texowners[s->texindex].slice == s) {
558 state.texowners[s->texindex].slice = NULL;
559 }
560 }
561 }
562 }
563
564 static void freepage (struct page *page)
565 {
566 if (page->text) {
567 fz_free_text_page (state.ctx, page->text);
568 }
569 if (page->sheet) {
570 fz_free_text_sheet (state.ctx, page->sheet);
571 }
572 if (page->slinks) {
573 free (page->slinks);
574 }
575 page->freepage (page->u.ptr);
576 fz_free_display_list (state.ctx, page->dlist);
577 free (page);
578 }
579
580 static void freetile (struct tile *tile)
581 {
582 unlinktile (tile);
583 if (!tile->pbo) {
584 #ifndef PIGGYBACK
585 fz_drop_pixmap (state.ctx, tile->pixmap);
586 #else
587 if (state.pig) {
588 fz_drop_pixmap (state.ctx, state.pig);
589 }
590 state.pig = tile->pixmap;
591 #endif
592 }
593 else {
594 free (tile->pbo);
595 fz_drop_pixmap (state.ctx, tile->pixmap);
596 }
597 free (tile);
598 }
599
600 #ifdef __ALTIVEC__
601 #include <altivec.h>
602
603 static int cacheline32bytes;
604
605 static void __attribute__ ((constructor)) clcheck (void)
606 {
607 char **envp = environ;
608 unsigned long *auxv;
609
610 while (*envp++);
611
612 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
613 if (*auxv == 19) {
614 cacheline32bytes = auxv[1] == 32;
615 return;
616 }
617 }
618 }
619
620 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
621 {
622 size_t size = pixmap->w * pixmap->h * pixmap->n;
623 if (cacheline32bytes && size > 32) {
624 intptr_t a1, a2, diff;
625 size_t sizea, i;
626 vector unsigned char v = vec_splat_u8 (-1);
627 vector unsigned char *p;
628
629 a1 = a2 = (intptr_t) pixmap->samples;
630 a2 = (a1 + 31) & ~31;
631 diff = a2 - a1;
632 sizea = size - diff;
633 p = (void *) a2;
634
635 while (a1 != a2) *(char *) a1++ = 0xff;
636 for (i = 0; i < (sizea & ~31); i += 32) {
637 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
638 vec_st (v, i, p);
639 vec_st (v, i + 16, p);
640 }
641 while (i < sizea) *((char *) a1 + i++) = 0xff;
642 }
643 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
644 }
645 #else
646 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
647 #endif
648
649 static void trimctm (pdf_page *page, int pindex)
650 {
651 fz_matrix ctm;
652 struct pagedim *pdim = &state.pagedims[pindex];
653
654 if (!pdim->tctmready) {
655 if (state.trimmargins) {
656 fz_rect realbox;
657 fz_matrix rm, sm, tm, im, ctm1;
658
659 fz_rotate (&rm, -pdim->rotate);
660 fz_scale (&sm, 1, -1);
661 fz_concat (&ctm, &rm, &sm);
662 realbox = pdim->mediabox;
663 fz_transform_rect (&realbox, &ctm);
664 fz_translate (&tm, -realbox.x0, -realbox.y0);
665 fz_concat (&ctm1, &ctm, &tm);
666 fz_invert_matrix (&im, &page->ctm);
667 fz_concat (&ctm, &im, &ctm1);
668 }
669 else {
670 ctm = fz_identity;
671 }
672 pdim->tctm = ctm;
673 pdim->tctmready = 1;
674 }
675 }
676
677 static fz_matrix pagectm (struct page *page)
678 {
679 fz_matrix ctm, tm;
680
681 if (page->type == DPDF) {
682 trimctm (page->u.pdfpage, page->pdimno);
683 fz_concat (&ctm,
684 &state.pagedims[page->pdimno].tctm,
685 &state.pagedims[page->pdimno].ctm);
686 }
687 else {
688 struct pagedim *pdim = &state.pagedims[page->pdimno];
689
690 fz_translate (&tm, -pdim->mediabox.x0, -pdim->mediabox.y0);
691 fz_concat (&ctm, &tm, &state.pagedims[page->pdimno].ctm);
692 }
693 return ctm;
694 }
695
696 static void *loadpage (int pageno, int pindex)
697 {
698 fz_device *dev;
699 struct page *page = NULL;
700
701 page = calloc (sizeof (struct page), 1);
702 if (!page) {
703 err (1, "calloc page %d", pageno);
704 }
705
706 page->dlist = fz_new_display_list (state.ctx);
707 dev = fz_new_list_device (state.ctx, page->dlist);
708 fz_try (state.ctx) {
709 switch (state.type) {
710 case DPDF:
711 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
712 pdf_run_page (state.u.pdf, page->u.pdfpage, dev,
713 &fz_identity, NULL);
714 page->freepage = freepdfpage;
715 break;
716
717 case DXPS:
718 page->u.xpspage = xps_load_page (state.u.xps, pageno);
719 xps_run_page (state.u.xps, page->u.xpspage, dev,
720 &fz_identity, NULL);
721 page->freepage = freexpspage;
722 break;
723
724 case DCBZ:
725 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
726 cbz_run_page (state.u.cbz, page->u.cbzpage, dev,
727 &fz_identity, NULL);
728 page->freepage = freecbzpage;
729 break;
730 }
731 }
732 fz_catch (state.ctx) {
733 page->u.ptr = NULL;
734 page->freepage = freeemptyxxxpage;
735 }
736 fz_free_device (dev);
737
738 page->pdimno = pindex;
739 page->pageno = pageno;
740 page->sgen = state.gen;
741 page->tgen = state.gen;
742 page->type = state.type;
743
744 return page;
745 }
746
747 static struct tile *alloctile (int h)
748 {
749 int i;
750 int slicecount;
751 size_t tilesize;
752 struct tile *tile;
753
754 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
755 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
756 tile = calloc (tilesize, 1);
757 if (!tile) {
758 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
759 }
760 for (i = 0; i < slicecount; ++i) {
761 int sh = MIN (h, state.sliceheight);
762 tile->slices[i].h = sh;
763 tile->slices[i].texindex = -1;
764 h -= sh;
765 }
766 tile->slicecount = slicecount;
767 tile->sliceheight = state.sliceheight;
768 return tile;
769 }
770
771 #ifdef OBSCURED_OPT
772 struct obs {
773 int cured;
774 fz_irect b;
775 };
776
777 static void obs_fill_image (fz_device *dev, fz_image *image,
778 const fz_matrix *ctm, float alpha)
779 {
780 struct obs *obs = dev->user;
781
782 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
783 fz_irect b;
784 fz_rect rect = fz_unit_rect;
785
786 fz_transform_rect (&rect, ctm);
787 fz_round_rect (&b, &rect);
788 fz_intersect_irect (&b, &obs->b);
789 obs->cured = b.x0 == obs->b.x0
790 && b.x1 == obs->b.x1
791 && b.y0 == obs->b.y0
792 && b.y1 == obs->b.y1;
793 }
794 }
795
796 static int obscured (struct page *page, fz_irect bbox)
797 {
798 fz_rect rect;
799 fz_matrix ctm;
800 fz_device dev;
801 struct obs obs;
802
803 memset (&dev, 0, sizeof (dev));
804 memset (&obs, 0, sizeof (obs));
805 dev.hints = 0;
806 dev.flags = 0;
807 dev.user = &obs;
808 dev.ctx = state.ctx;
809 dev.fill_image = obs_fill_image;
810 obs.b = bbox;
811 fz_rect_from_irect (&rect, &bbox);
812 ctm = pagectm (page);
813 fz_run_display_list (page->dlist, &dev, &ctm, &rect, NULL);
814 return obs.cured;
815 }
816 #define OBSCURED obscured
817 #else
818 #define OBSCURED(a, b) 0
819 #endif
820
821 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
822 struct pbo *pbo)
823 {
824 fz_rect rect;
825 fz_irect bbox;
826 fz_matrix ctm;
827 fz_device *dev;
828 struct tile *tile;
829 struct pagedim *pdim;
830
831 tile = alloctile (h);
832 pdim = &state.pagedims[page->pdimno];
833
834 bbox = pdim->bounds;
835 bbox.x0 += x;
836 bbox.y0 += y;
837 bbox.x1 = bbox.x0 + w;
838 bbox.y1 = bbox.y0 + h;
839
840 if (state.pig) {
841 if (state.pig->w == w
842 && state.pig->h == h
843 && state.pig->colorspace == state.colorspace) {
844 tile->pixmap = state.pig;
845 tile->pixmap->x = bbox.x0;
846 tile->pixmap->y = bbox.y0;
847 }
848 else {
849 fz_drop_pixmap (state.ctx, state.pig);
850 }
851 state.pig = NULL;
852 }
853 if (!tile->pixmap) {
854 if (pbo) {
855 tile->pixmap =
856 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
857 &bbox, pbo->ptr);
858 tile->pbo = pbo;
859 }
860 else {
861 tile->pixmap =
862 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox);
863 }
864 }
865
866 tile->w = w;
867 tile->h = h;
868 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
869 clearpixmap (tile->pixmap);
870 }
871 dev = fz_new_draw_device (state.ctx, tile->pixmap);
872 ctm = pagectm (page);
873 fz_rect_from_irect (&rect, &bbox);
874 fz_run_display_list (page->dlist, dev, &ctm, &rect, NULL);
875 fz_free_device (dev);
876
877 return tile;
878 }
879
880 static void initpdims (void)
881 {
882 double start, end;
883 int pageno, trim, show;
884 FILE *trimf = NULL;
885 int trimw = 0;
886
887 start = now ();
888
889 if (state.trimmargins && state.trimcachepath) {
890 trimf = fopen (state.trimcachepath, "rb");
891 if (!trimf) {
892 trimf = fopen (state.trimcachepath, "wb");
893 trimw = 1;
894 }
895 }
896 for (pageno = 0; pageno < state.pagecount; ++pageno) {
897 int rotate = 0;
898 struct pagedim *p;
899 fz_rect mediabox;
900
901 switch (state.type) {
902 case DPDF: {
903 pdf_obj *pageobj = state.u.pdf->page_objs[pageno];
904
905 if (state.trimmargins) {
906 pdf_obj *obj;
907 pdf_page *page;
908
909 fz_try (state.ctx) {
910 page = pdf_load_page (state.u.pdf, pageno);
911 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
912 trim = state.trimanew || !obj;
913 if (trim) {
914 fz_rect rect;
915 fz_matrix ctm;
916 fz_device *dev;
917
918 dev = fz_new_bbox_device (state.ctx, &rect);
919 dev->hints |= FZ_IGNORE_SHADE;
920 fz_invert_matrix (&ctm, &page->ctm);
921 pdf_run_page (state.u.pdf, page, dev, &fz_identity, NULL);
922 fz_free_device (dev);
923
924 rect.x0 += state.trimfuzz.x0;
925 rect.x1 += state.trimfuzz.x1;
926 rect.y0 += state.trimfuzz.y0;
927 rect.y1 += state.trimfuzz.y1;
928 fz_transform_rect (&rect, &ctm);
929 fz_intersect_rect (&rect, &page->mediabox);
930
931 if (fz_is_empty_rect (&rect)) {
932 mediabox = page->mediabox;
933 }
934 else {
935 mediabox = rect;
936 }
937
938 obj = pdf_new_array (state.ctx, 4);
939 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x0));
940 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y0));
941 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x1));
942 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y1));
943 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
944 }
945 else {
946 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
947 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
948 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
949 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
950 }
951
952 rotate = page->rotate;
953 pdf_free_page (state.u.pdf, page);
954
955 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
956 if (show) {
957 printd ("progress %f Trimming %d",
958 (double) (pageno + 1) / state.pagecount,
959 pageno + 1);
960 }
961 }
962 fz_catch (state.ctx) {
963 fprintf (stderr, "failed to load page %d\n", pageno+1);
964 }
965 }
966 else {
967 fz_rect cropbox;
968
969 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "MediaBox"),
970 &mediabox);
971 if (fz_is_empty_rect (&mediabox)) {
972 fprintf (stderr, "cannot find page size for page %d\n",
973 pageno+1);
974 mediabox.x0 = 0;
975 mediabox.y0 = 0;
976 mediabox.x1 = 612;
977 mediabox.y1 = 792;
978 }
979
980 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "CropBox"),
981 &cropbox);
982 if (!fz_is_empty_rect (&cropbox)) {
983 fz_intersect_rect (&mediabox, &cropbox);
984 }
985 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
986 }
987 break;
988 }
989
990 case DXPS:
991 {
992 xps_page *page;
993
994 fz_try (state.ctx) {
995 page = xps_load_page (state.u.xps, pageno);
996 xps_bound_page (state.u.xps, page, &mediabox);
997 rotate = 0;
998 if (state.trimmargins) {
999 fz_rect rect;
1000 fz_device *dev;
1001
1002 dev = fz_new_bbox_device (state.ctx, &rect);
1003 dev->hints |= FZ_IGNORE_SHADE;
1004 xps_run_page (state.u.xps, page, dev,
1005 &fz_identity, NULL);
1006 fz_free_device (dev);
1007
1008 rect.x0 += state.trimfuzz.x0;
1009 rect.x1 += state.trimfuzz.x1;
1010 rect.y0 += state.trimfuzz.y0;
1011 rect.y1 += state.trimfuzz.y1;
1012 fz_intersect_rect (&rect, &mediabox);
1013
1014 if (!fz_is_empty_rect (&rect)) {
1015 mediabox = rect;
1016 }
1017 }
1018 xps_free_page (state.u.xps, page);
1019 printd ("progress %f loading %d",
1020 (double) (pageno + 1) / state.pagecount,
1021 pageno + 1);
1022 }
1023 fz_catch (state.ctx) {
1024 }
1025 }
1026 break;
1027
1028 case DCBZ:
1029 {
1030 rotate = 0;
1031 if (state.trimmargins && trimw) {
1032 cbz_page *page;
1033
1034 fz_try (state.ctx) {
1035 page = cbz_load_page (state.u.cbz, pageno);
1036 cbz_bound_page (state.u.cbz, page, &mediabox);
1037 cbz_free_page (state.u.cbz, page);
1038 printd ("progress %f Trimming %d",
1039 (double) (pageno + 1) / state.pagecount,
1040 pageno + 1);
1041 }
1042 fz_catch (state.ctx) {
1043 fprintf (stderr, "failed to load page %d\n", pageno+1);
1044 mediabox.x0 = 0;
1045 mediabox.y0 = 0;
1046 mediabox.x1 = 900;
1047 mediabox.y1 = 900;
1048 }
1049 if (trimf) {
1050 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1051 if (n - 1) {
1052 err (1, "fwrite trim mediabox");
1053 }
1054 }
1055 }
1056 else {
1057 if (trimf) {
1058 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1059 if (n - 1) {
1060 err (1, "fread trim mediabox");
1061 }
1062 }
1063 else {
1064 mediabox.x0 = mediabox.y0 = 0;
1065 mediabox.x1 = 900;
1066 mediabox.y1 = 900;
1067 }
1068 }
1069 }
1070 break;
1071
1072 default:
1073 ARSERT (0 && state.type);
1074 }
1075
1076 if (state.pagedimcount == 0
1077 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1078 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1079 size_t size;
1080
1081 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1082 state.pagedims = realloc (state.pagedims, size);
1083 if (!state.pagedims) {
1084 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1085 size, state.pagedimcount + 1);
1086 }
1087
1088 p = &state.pagedims[state.pagedimcount++];
1089 p->rotate = rotate;
1090 p->mediabox = mediabox;
1091 p->pageno = pageno;
1092 }
1093 }
1094 end = now ();
1095 if (state.trimmargins) {
1096 printd ("progress 1 Trimmed %d pages in %f seconds",
1097 state.pagecount, end - start);
1098 }
1099 else {
1100 printd ("vmsg Processed %d pages in %f seconds",
1101 state.pagecount, end - start);
1102 }
1103 state.trimanew = 0;
1104 if (trimf) {
1105 if (fclose (trimf)) {
1106 err (1, "fclose");
1107 }
1108 }
1109 }
1110
1111 static void layout (void)
1112 {
1113 int pindex;
1114 fz_rect box;
1115 fz_matrix ctm;
1116 double zoom, w, maxw = 0;
1117 struct pagedim *p = state.pagedims;
1118
1119 if (state.proportional) {
1120 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1121 fz_matrix rm;
1122
1123 fz_rotate (&rm, p->rotate + state.rotate);
1124 box = p->mediabox;
1125 fz_transform_rect (&box, &rm);
1126 w = box.x1 - box.x0;
1127 maxw = MAX (w, maxw);
1128 }
1129 }
1130
1131 p = state.pagedims;
1132 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1133 fz_rect rect;
1134 fz_matrix tm, sm, rm;
1135
1136 fz_rotate (&ctm, state.rotate);
1137 fz_rotate (&rm, p->rotate + state.rotate);
1138 box = p->mediabox;
1139 fz_transform_rect (&box, &rm);
1140 w = box.x1 - box.x0;
1141
1142 if (state.proportional) {
1143 double scale = w / maxw;
1144 zoom = (state.w / w) * scale;
1145 }
1146 else {
1147 zoom = state.w / w;
1148 }
1149
1150 fz_scale (&p->zoomctm, zoom, zoom);
1151 fz_concat (&ctm, &p->zoomctm, &ctm);
1152
1153 fz_rotate (&rm, p->rotate);
1154 p->pagebox = p->mediabox;
1155 fz_transform_rect (&p->pagebox, &rm);
1156 p->pagebox.x1 -= p->pagebox.x0;
1157 p->pagebox.y1 -= p->pagebox.y0;
1158 p->pagebox.x0 = 0;
1159 p->pagebox.y0 = 0;
1160 rect = p->pagebox;
1161 fz_transform_rect (&rect, &ctm);
1162 fz_round_rect (&p->bounds, &rect);
1163
1164 p->left = state.proportional ? ((maxw - w) * zoom) / 2.0 : 0;
1165 p->ctm = ctm;
1166
1167 fz_translate (&tm, 0, -p->mediabox.y1);
1168 fz_scale (&sm, zoom, -zoom);
1169 fz_concat (&ctm, &tm, &sm);
1170 fz_concat (&p->lctm, &ctm, &rm);
1171
1172 p->tctmready = 0;
1173 }
1174
1175 while (p-- != state.pagedims) {
1176 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1177 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1178 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1179 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1180 int w = x1 - x0;
1181 int h = y1 - y0;
1182
1183 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1184 }
1185 }
1186
1187 static
1188 struct anchor { int n; int x; int y; int w; int h; }
1189 desttoanchor (fz_link_dest *dest)
1190 {
1191 int i;
1192 struct anchor a;
1193 struct pagedim *pdim = state.pagedims;
1194
1195 a.n = -1;
1196 a.x = 0;
1197 a.y = 0;
1198 for (i = 0; i < state.pagedimcount; ++i) {
1199 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1200 break;
1201 pdim = &state.pagedims[i];
1202 }
1203 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1204 fz_point p;
1205 if (dest->ld.gotor.flags & fz_link_flag_l_valid)
1206 p.x = dest->ld.gotor.lt.x;
1207 p.y = dest->ld.gotor.lt.y;
1208 fz_transform_point (&p, &pdim->lctm);
1209 a.y = p.y;
1210 a.x = p.x;
1211 }
1212 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1213 double x0, x1, y0, y1;
1214
1215 x0 = MIN (pdim->bounds.x0, pdim->bounds.x1);
1216 x1 = MAX (pdim->bounds.x0, pdim->bounds.x1);
1217 a.w = x1 - x0;
1218 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1219 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1220 a.h = y1 - y0;
1221 a.n = dest->ld.gotor.page;
1222 }
1223 return a;
1224 }
1225
1226 static void recurse_outline (fz_outline *outline, int level)
1227 {
1228 while (outline) {
1229 struct anchor a = desttoanchor (&outline->dest);
1230
1231 if (a.n >= 0) {
1232 printd ("o %d %d %d %d %s",
1233 level, a.n, a.y, a.h, outline->title);
1234 }
1235 if (outline->down) {
1236 recurse_outline (outline->down, level + 1);
1237 }
1238 outline = outline->next;
1239 }
1240 }
1241
1242 static void process_outline (void)
1243 {
1244 fz_outline *outline;
1245
1246 if (!state.needoutline) return;
1247
1248 state.needoutline = 0;
1249 switch (state.type) {
1250 case DPDF:
1251 outline = pdf_load_outline (state.u.pdf);
1252 break;
1253 case DXPS:
1254 outline = xps_load_outline (state.u.xps);
1255 break;
1256 default:
1257 outline = NULL;
1258 break;
1259 }
1260 if (outline) {
1261 recurse_outline (outline, 0);
1262 fz_free_outline (state.ctx, outline);
1263 }
1264 }
1265
1266 static char *strofspan (fz_text_span *span)
1267 {
1268 char *p;
1269 char utf8[10];
1270 fz_text_char *ch;
1271 size_t size = 0, cap = 80;
1272
1273 p = malloc (cap + 1);
1274 if (!p) return NULL;
1275
1276 for (ch = span->text; ch < span->text + span->len; ++ch) {
1277 int n = fz_runetochar (utf8, ch->c);
1278 if (size + n > cap) {
1279 cap *= 2;
1280 p = realloc (p, cap + 1);
1281 if (!p) return NULL;
1282 }
1283
1284 memcpy (p + size, utf8, n);
1285 size += n;
1286 }
1287 p[size] = 0;
1288 return p;
1289 }
1290
1291 static int matchspan (regex_t *re, fz_text_span *span, fz_matrix ctm,
1292 int stop, int pageno, double start)
1293 {
1294 int ret;
1295 char *p;
1296 regmatch_t rm;
1297 int a, b, c;
1298 fz_rect *sb, *eb;
1299 fz_point p1, p2, p3, p4;
1300
1301 p = strofspan (span);
1302 if (!p) return -1;
1303
1304 ret = regexec (re, p, 1, &rm, 0);
1305 if (ret) {
1306 free (p);
1307 if (ret != REG_NOMATCH) {
1308 size_t size;
1309 char errbuf[80];
1310 size = regerror (ret, re, errbuf, sizeof (errbuf));
1311 printd ("msg regexec error `%.*s'",
1312 (int) size, errbuf);
1313 return -1;
1314 }
1315 return 0;
1316 }
1317 else {
1318 int l = span->len;
1319 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1320 c += fz_runelen (span->text[a].c);
1321 }
1322 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1323 c += fz_runelen (span->text[b].c);
1324 }
1325
1326 if (fz_runelen (span->text[b].c) > 1) {
1327 b = MAX (0, b-1);
1328 }
1329 sb = &span->text[MIN (a, l-1)].bbox;
1330 eb = &span->text[MIN (b, l-1)].bbox;
1331
1332 p1.x = sb->x0;
1333 p1.y = sb->y0;
1334 p2.x = eb->x1;
1335 p2.y = sb->y0;
1336 p3.x = eb->x1;
1337 p3.y = eb->y1;
1338 p4.x = sb->x0;
1339 p4.y = eb->y1;
1340
1341 if (!stop) {
1342 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1343 pageno, 1,
1344 p1.x, p1.y,
1345 p2.x, p2.y,
1346 p3.x, p3.y,
1347 p4.x, p4.y);
1348
1349 printd ("progress 1 found at %d `%.*s' in %f sec",
1350 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1351 now () - start);
1352 }
1353 else {
1354 printd ("match %d %d %f %f %f %f %f %f %f %f",
1355 pageno, 2,
1356 p1.x, p1.y,
1357 p2.x, p2.y,
1358 p3.x, p3.y,
1359 p4.x, p4.y);
1360 }
1361 free (p);
1362 return 1;
1363 }
1364 }
1365
1366 static int compareblocks (const void *l, const void *r)
1367 {
1368 fz_text_block const *ls = l;
1369 fz_text_block const* rs = r;
1370 return ls->bbox.y0 - rs->bbox.y0;
1371 }
1372
1373 /* wishful thinking function */
1374 static void search (regex_t *re, int pageno, int y, int forward)
1375 {
1376 int i, j;
1377 fz_matrix ctm;
1378 fz_device *tdev;
1379 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1380 fz_text_page *text;
1381 fz_text_sheet *sheet;
1382 struct pagedim *pdim, *pdimprev;
1383 int stop = 0, niters = 0;
1384 double start, end;
1385
1386 if (!(state.type == DPDF || state.type == DXPS))
1387 return;
1388
1389 start = now ();
1390 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1391 if (niters++ == 5) {
1392 niters = 0;
1393 if (hasdata ()) {
1394 printd ("progress 1 attention requested aborting search at %d",
1395 pageno);
1396 stop = 1;
1397 }
1398 else {
1399 printd ("progress %f searching in page %d",
1400 (double) (pageno + 1) / state.pagecount,
1401 pageno);
1402 }
1403 }
1404 pdimprev = NULL;
1405 for (i = 0; i < state.pagedimcount; ++i) {
1406 pdim = &state.pagedims[i];
1407 if (pdim->pageno == pageno) {
1408 goto found;
1409 }
1410 if (pdim->pageno > pageno) {
1411 pdim = pdimprev;
1412 goto found;
1413 }
1414 pdimprev = pdim;
1415 }
1416 pdim = pdimprev;
1417 found:
1418
1419 sheet = fz_new_text_sheet (state.ctx);
1420 text = fz_new_text_page (state.ctx, &fz_infinite_rect);
1421 tdev = fz_new_text_device (state.ctx, sheet, text);
1422
1423 switch (state.type) {
1424 case DPDF:
1425 u.ptr = NULL;
1426 fz_try (state.ctx) {
1427 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1428 trimctm (u.pdfpage, pdim - state.pagedims);
1429 fz_concat (&ctm, &pdim->tctm, &pdim->zoomctm);
1430 pdf_run_page (state.u.pdf, u.pdfpage, tdev, &ctm, NULL);
1431 }
1432 fz_catch (state.ctx) {
1433 fz_free_device (tdev);
1434 u.ptr = NULL;
1435 goto nextiter;
1436 }
1437 break;
1438
1439 case DXPS:
1440 u.xpspage = xps_load_page (state.u.xps, pageno);
1441 xps_run_page (state.u.xps, u.xpspage, tdev, &pdim->ctm, NULL);
1442 break;
1443
1444 default:
1445 ARSERT (0 && state.type);
1446 }
1447
1448 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1449 fz_free_device (tdev);
1450
1451 for (j = 0; j < text->len; ++j) {
1452 int k;
1453 fz_text_block *block;
1454
1455 block = &text->blocks[forward ? j : text->len - 1 - j];
1456
1457 for (k = 0; k < block->len; ++k) {
1458 fz_text_line *line;
1459 fz_text_span *span;
1460
1461 if (forward) {
1462 line = &block->lines[k];
1463 if (line->bbox.y0 < y + 1) continue;
1464 }
1465 else {
1466 line = &block->lines[block->len - 1 - k];
1467 if (line->bbox.y0 > y - 1) continue;
1468 }
1469
1470 for (span = line->spans;
1471 span < line->spans + line->len;
1472 ++span) {
1473
1474 switch (matchspan (re, span, ctm, stop, pageno, start)) {
1475 case 0: break;
1476 case 1: stop = 1; break;
1477 case -1: stop = 1; goto endloop;
1478 }
1479 }
1480 }
1481 }
1482 nextiter:
1483 if (forward) {
1484 pageno += 1;
1485 y = 0;
1486 }
1487 else {
1488 pageno -= 1;
1489 y = INT_MAX;
1490 }
1491 endloop:
1492 fz_free_text_page (state.ctx, text);
1493 fz_free_text_sheet (state.ctx, sheet);
1494 if (u.ptr) {
1495 state.freepage (u.ptr);
1496 }
1497 }
1498 end = now ();
1499 if (!stop) {
1500 printd ("progress 1 no matches %f sec", end - start);
1501 }
1502 printd ("clearrects");
1503 }
1504
1505 static void set_tex_params (int colorspace)
1506 {
1507 union {
1508 unsigned char b;
1509 unsigned int s;
1510 } endianness = {1};
1511
1512 switch (colorspace) {
1513 case 0:
1514 state.texiform = GL_RGBA8;
1515 state.texform = GL_RGBA;
1516 state.texty = GL_UNSIGNED_BYTE;
1517 state.colorspace = fz_device_rgb;
1518 break;
1519 case 1:
1520 state.texiform = GL_RGBA8;
1521 state.texform = GL_BGRA;
1522 state.texty = endianness.s > 1
1523 ? GL_UNSIGNED_INT_8_8_8_8
1524 : GL_UNSIGNED_INT_8_8_8_8_REV;
1525 state.colorspace = fz_device_bgr;
1526 break;
1527 case 2:
1528 state.texiform = GL_LUMINANCE_ALPHA;
1529 state.texform = GL_LUMINANCE_ALPHA;
1530 state.texty = GL_UNSIGNED_BYTE;
1531 state.colorspace = fz_device_gray;
1532 break;
1533 default:
1534 errx (1, "invalid colorspce %d", colorspace);
1535 }
1536 }
1537
1538 static void realloctexts (int texcount)
1539 {
1540 size_t size;
1541
1542 if (texcount == state.texcount) return;
1543
1544 if (texcount < state.texcount) {
1545 glDeleteTextures (state.texcount - texcount,
1546 state.texids + texcount);
1547 }
1548
1549 size = texcount * sizeof (*state.texids);
1550 state.texids = realloc (state.texids, size);
1551 if (!state.texids) {
1552 err (1, "realloc texids %" FMT_s, size);
1553 }
1554
1555 size = texcount * sizeof (*state.texowners);
1556 state.texowners = realloc (state.texowners, size);
1557 if (!state.texowners) {
1558 err (1, "realloc texowners %" FMT_s, size);
1559 }
1560 if (texcount > state.texcount) {
1561 int i;
1562
1563 glGenTextures (texcount - state.texcount,
1564 state.texids + state.texcount);
1565 for (i = state.texcount; i < texcount; ++i) {
1566 state.texowners[i].w = -1;
1567 state.texowners[i].slice = NULL;
1568 }
1569 }
1570 state.texcount = texcount;
1571 state.texindex = 0;
1572 }
1573
1574 static char *mbtoutf8 (char *s)
1575 {
1576 char *p, *r;
1577 wchar_t *tmp;
1578 size_t i, ret, len;
1579
1580 len = mbstowcs (NULL, s, strlen (s));
1581 if (len == 0) {
1582 return s;
1583 }
1584 else {
1585 if (len == (size_t) -1) {
1586 return s;
1587 }
1588 }
1589
1590 tmp = malloc (len * sizeof (wchar_t));
1591 if (!tmp) {
1592 return s;
1593 }
1594
1595 ret = mbstowcs (tmp, s, len);
1596 if (ret == (size_t) -1) {
1597 free (tmp);
1598 return s;
1599 }
1600
1601 len = 0;
1602 for (i = 0; i < ret; ++i) {
1603 len += fz_runelen (tmp[i]);
1604 }
1605
1606 p = r = malloc (len + 1);
1607 if (!r) {
1608 free (tmp);
1609 return s;
1610 }
1611
1612 for (i = 0; i < ret; ++i) {
1613 p += fz_runetochar (p, tmp[i]);
1614 }
1615 *p = 0;
1616 free (tmp);
1617 return r;
1618 }
1619
1620 CAMLprim value ml_mbtoutf8 (value s_v)
1621 {
1622 CAMLparam1 (s_v);
1623 CAMLlocal1 (ret_v);
1624 char *s, *r;
1625
1626 s = String_val (s_v);
1627 r = mbtoutf8 (s);
1628 if (r == s) {
1629 ret_v = s_v;
1630 }
1631 else {
1632 ret_v = caml_copy_string (r);
1633 free (r);
1634 }
1635 CAMLreturn (ret_v);
1636 }
1637
1638 static void * mainloop (void *unused)
1639 {
1640 char *p = NULL;
1641 int len, ret, oldlen = 0;
1642
1643 for (;;) {
1644 len = readlen ();
1645 if (len == 0) {
1646 errx (1, "readlen returned 0");
1647 }
1648
1649 if (oldlen < len + 1) {
1650 p = realloc (p, len + 1);
1651 if (!p) {
1652 err (1, "realloc %d failed", len + 1);
1653 }
1654 oldlen = len + 1;
1655 }
1656 readdata (p, len);
1657 p[len] = 0;
1658
1659 if (!strncmp ("open", p, 4)) {
1660 size_t filenamelen;
1661 int wthack, off;
1662 char *password;
1663 char *filename;
1664 char *utf8filename;
1665
1666 ret = sscanf (p + 5, " %d %n", &wthack, &off);
1667 if (ret != 1) {
1668 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1669 }
1670
1671 filename = p + 5 + off;
1672 filenamelen = strlen (filename);
1673 password = filename + filenamelen + 1;
1674
1675 lock ("open");
1676 openxref (filename, password);
1677 pdfinfo ();
1678 initpdims ();
1679 unlock ("open");
1680
1681 if (!wthack) {
1682 utf8filename = mbtoutf8 (filename);
1683 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1684 if (utf8filename != filename) {
1685 free (utf8filename);
1686 }
1687 }
1688 state.needoutline = 1;
1689 }
1690 else if (!strncmp ("cs", p, 2)) {
1691 int i, colorspace;
1692
1693 ret = sscanf (p + 2, " %d", &colorspace);
1694 if (ret != 1) {
1695 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1696 }
1697 lock ("cs");
1698 set_tex_params (colorspace);
1699 for (i = 0; i < state.texcount; ++i) {
1700 state.texowners[i].w = -1;
1701 state.texowners[i].slice = NULL;
1702 }
1703 unlock ("cs");
1704 }
1705 else if (!strncmp ("freepage", p, 8)) {
1706 void *ptr;
1707
1708 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1709 if (ret != 1) {
1710 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1711 }
1712 freepage (ptr);
1713 }
1714 else if (!strncmp ("freetile", p, 8)) {
1715 void *ptr;
1716
1717 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1718 if (ret != 1) {
1719 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1720 }
1721 freetile (ptr);
1722 }
1723 else if (!strncmp ("search", p, 6)) {
1724 int icase, pageno, y, ret, len2, forward;
1725 char *pattern;
1726 regex_t re;
1727
1728 ret = sscanf (p + 6, " %d %d %d %d,%n",
1729 &icase, &pageno, &y, &forward, &len2);
1730 if (ret != 4) {
1731 errx (1, "malformed search `%s' ret=%d", p, ret);
1732 }
1733
1734 pattern = p + 6 + len2;
1735 ret = regcomp (&re, pattern,
1736 REG_EXTENDED | (icase ? REG_ICASE : 0));
1737 if (ret) {
1738 char errbuf[80];
1739 size_t size;
1740
1741 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1742 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1743 }
1744 else {
1745 search (&re, pageno, y, forward);
1746 regfree (&re);
1747 }
1748 }
1749 else if (!strncmp ("geometry", p, 8)) {
1750 int w, h;
1751
1752 printd ("clear");
1753 ret = sscanf (p + 8, " %d %d", &w, &h);
1754 if (ret != 2) {
1755 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1756 }
1757
1758 lock ("geometry");
1759 state.h = h;
1760 if (w != state.w) {
1761 int i;
1762 state.w = w;
1763 for (i = 0; i < state.texcount; ++i) {
1764 state.texowners[i].slice = NULL;
1765 }
1766 }
1767 layout ();
1768 process_outline ();
1769
1770 state.gen++;
1771 unlock ("geometry");
1772 printd ("continue %d", state.pagecount);
1773 }
1774 else if (!strncmp ("reqlayout", p, 9)) {
1775 char *nameddest;
1776 int rotate, proportional, off;
1777
1778 printd ("clear");
1779 ret = sscanf (p + 9, " %d %d %n", &rotate, &proportional, &off);
1780 if (ret != 2) {
1781 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1782 }
1783 lock ("reqlayout");
1784 if (state.rotate != rotate || state.proportional != proportional) {
1785 state.gen += 1;
1786 }
1787 state.rotate = rotate;
1788 state.proportional = proportional;
1789 layout ();
1790 process_outline ();
1791
1792 nameddest = p + 9 + off;
1793 if (state.type == DPDF && nameddest && *nameddest) {
1794 struct anchor a;
1795 fz_link_dest dest;
1796 pdf_obj *needle, *obj;
1797
1798 needle = pdf_new_string (state.ctx, nameddest,
1799 strlen (nameddest));
1800 obj = pdf_lookup_dest (state.u.pdf, needle);
1801 if (obj) {
1802 dest = pdf_parse_link_dest (state.u.pdf, obj);
1803
1804 a = desttoanchor (&dest);
1805 if (a.n >= 0) {
1806 printd ("a %d %d %d", a.n, a.x, a.y);
1807 }
1808 else {
1809 printd ("emsg failed to parse destination `%s'\n",
1810 nameddest);
1811 }
1812 }
1813 else {
1814 printd ("emsg destination `%s' not found\n",
1815 nameddest);
1816 }
1817 pdf_drop_obj (needle);
1818 }
1819
1820 state.gen++;
1821 unlock ("reqlayout");
1822 printd ("continue %d", state.pagecount);
1823 }
1824 else if (!strncmp ("page", p, 4)) {
1825 double a, b;
1826 struct page *page;
1827 int pageno, pindex, ret;
1828
1829 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1830 if (ret != 2) {
1831 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1832 }
1833
1834 lock ("page");
1835 a = now ();
1836 page = loadpage (pageno, pindex);
1837 b = now ();
1838 unlock ("page");
1839
1840 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1841 }
1842 else if (!strncmp ("tile", p, 4)) {
1843 int x, y, w, h, ret;
1844 struct page *page;
1845 struct tile *tile;
1846 double a, b;
1847 void *data;
1848
1849 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1850 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1851 if (ret != 6) {
1852 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1853 }
1854
1855 lock ("tile");
1856 a = now ();
1857 tile = rendertile (page, x, y, w, h, data);
1858 b = now ();
1859 unlock ("tile");
1860
1861 printd ("tile %d %d %" FMT_ptr " %u %f",
1862 x, y,
1863 FMT_ptr_cast2 (tile),
1864 tile->w * tile->h * tile->pixmap->n,
1865 b - a);
1866 }
1867 else if (!strncmp ("settrim", p, 7)) {
1868 int trimmargins;
1869 fz_irect fuzz;
1870
1871 ret = sscanf (p + 7, " %d %d %d %d %d", &trimmargins,
1872 &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1873 if (ret != 5) {
1874 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1875 }
1876 printd ("clear");
1877 lock ("settrim");
1878 state.trimmargins = trimmargins;
1879 state.needoutline = 1;
1880 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1881 state.trimanew = 1;
1882 state.trimfuzz = fuzz;
1883 }
1884 state.pagedimcount = 0;
1885 free (state.pagedims);
1886 state.pagedims = NULL;
1887 initpdims ();
1888 layout ();
1889 process_outline ();
1890 unlock ("settrim");
1891 printd ("continue %d", state.pagecount);
1892 }
1893 else if (!strncmp ("sliceh", p, 6)) {
1894 int h;
1895
1896 ret = sscanf (p + 6, " %d", &h);
1897 if (ret != 1) {
1898 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1899 }
1900 if (h != state.sliceheight) {
1901 int i;
1902
1903 state.sliceheight = h;
1904 for (i = 0; i < state.texcount; ++i) {
1905 state.texowners[i].w = -1;
1906 state.texowners[i].h = -1;
1907 state.texowners[i].slice = NULL;
1908 }
1909 }
1910 }
1911 else if (!strncmp ("interrupt", p, 9)) {
1912 printd ("vmsg interrupted");
1913 }
1914 else {
1915 errx (1, "unknown command %.*s", len, p);
1916 }
1917 }
1918 return 0;
1919 }
1920
1921 CAMLprim value ml_realloctexts (value texcount_v)
1922 {
1923 CAMLparam1 (texcount_v);
1924 int ok;
1925
1926 if (trylock ("ml_realloctexts")) {
1927 ok = 0;
1928 goto done;
1929 }
1930 realloctexts (Int_val (texcount_v));
1931 ok = 1;
1932 unlock ("ml_realloctexts");
1933
1934 done:
1935 CAMLreturn (Val_bool (ok));
1936 }
1937
1938 static void showsel (struct page *page, int ox, int oy)
1939 {
1940 int seen = 0;
1941 fz_irect bbox;
1942 fz_rect rect;
1943 fz_text_line *line;
1944 fz_text_span *span;
1945 fz_text_block *block;
1946 struct mark first, last;
1947
1948 first = page->fmark;
1949 last = page->lmark;
1950
1951 if (!first.span || !last.span) return;
1952
1953 glEnable (GL_BLEND);
1954 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
1955 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
1956
1957 ox += state.pagedims[page->pdimno].bounds.x0;
1958 oy += state.pagedims[page->pdimno].bounds.y0;
1959 for (block = page->text->blocks;
1960 block < page->text->blocks + page->text->len;
1961 ++block) {
1962 for (line = block->lines;
1963 line < block->lines + block->len;
1964 ++line) {
1965 rect = fz_empty_rect;
1966 for (span = line->spans;
1967 span < line->spans + line->len;
1968 ++span) {
1969 int i, j, k;
1970
1971 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
1972
1973 j = 0;
1974 k = span->len - 1;
1975
1976 if (span == page->fmark.span && span == page->lmark.span) {
1977 seen = 1;
1978 j = MIN (first.i, last.i);
1979 k = MAX (first.i, last.i);
1980 }
1981 else if (span == first.span) {
1982 seen = 1;
1983 j = first.i;
1984 }
1985 else if (span == last.span) {
1986 seen = 1;
1987 k = last.i;
1988 }
1989
1990 if (seen) {
1991 for (i = j; i <= k; ++i) {
1992 fz_union_rect (&rect, &span->text[i].bbox);
1993 }
1994 fz_round_rect (&bbox, &rect);
1995 lprintf ("%d %d %d %d oy=%d ox=%d\n",
1996 bbox.x0,
1997 bbox.y0,
1998 bbox.x1,
1999 bbox.y1,
2000 oy, ox);
2001
2002 glRecti (bbox.x0 + ox, bbox.y0 + oy,
2003 bbox.x1 + ox, bbox.y1 + oy);
2004 if (span == last.span) {
2005 goto done;
2006 }
2007 }
2008 }
2009 }
2010 }
2011 done:
2012 glDisable (GL_BLEND);
2013 }
2014
2015 #include "glfont.c"
2016
2017 static void highlightlinks (struct page *page, int xoff, int yoff)
2018 {
2019 fz_matrix ctm, tm, pm;
2020 fz_link *link, *links;
2021
2022 switch (page->type) {
2023 case DPDF:
2024 links = page->u.pdfpage->links;
2025 break;
2026
2027 case DXPS:
2028 links = page->u.xpspage->links;
2029 break;
2030
2031 default:
2032 return;
2033 }
2034
2035 glEnable (GL_TEXTURE_1D);
2036 glEnable (GL_BLEND);
2037 glBindTexture (GL_TEXTURE_1D, state.stid);
2038
2039 xoff -= state.pagedims[page->pdimno].bounds.x0;
2040 yoff -= state.pagedims[page->pdimno].bounds.y0;
2041 fz_translate (&tm, xoff, yoff);
2042 pm = pagectm (page);
2043 fz_concat (&ctm, &pm, &tm);
2044
2045 glBegin (GL_LINES);
2046 for (link = links; link; link = link->next) {
2047 fz_point p1, p2, p3, p4;
2048
2049 p1.x = link->rect.x0;
2050 p1.y = link->rect.y0;
2051
2052 p2.x = link->rect.x1;
2053 p2.y = link->rect.y0;
2054
2055 p3.x = link->rect.x1;
2056 p3.y = link->rect.y1;
2057
2058 p4.x = link->rect.x0;
2059 p4.y = link->rect.y1;
2060
2061 fz_transform_point (&p1, &ctm);
2062 fz_transform_point (&p2, &ctm);
2063 fz_transform_point (&p3, &ctm);
2064 fz_transform_point (&p4, &ctm);
2065
2066 switch (link->dest.kind) {
2067 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2068 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2069 case FZ_LINK_LAUNCH: glColor3ub (0, 255, 0); break;
2070 default: glColor3ub (0, 0, 0); break;
2071 }
2072
2073 {
2074 float w, h, s, t;
2075
2076 w = p2.x - p1.x;
2077 h = p2.y - p1.y;
2078 t = sqrtf (w*w + h*h) * .25f;
2079
2080 w = p3.x - p2.x;
2081 h = p3.y - p2.y;
2082 s = sqrtf (w*w + h*h) * .25f;
2083
2084 glTexCoord1i (0);
2085 glVertex2f (p1.x, p1.y);
2086 glTexCoord1f (t);
2087 glVertex2f (p2.x, p2.y);
2088
2089 glTexCoord1i (0);
2090 glVertex2f (p2.x, p2.y);
2091 glTexCoord1f (s);
2092 glVertex2f (p3.x, p3.y);
2093
2094 glTexCoord1i (0);
2095 glVertex2f (p3.x, p3.y);
2096 glTexCoord1i (t);
2097 glVertex2f (p4.x, p4.y);
2098
2099 glTexCoord1i (0);
2100 glVertex2f (p4.x, p4.y);
2101 glTexCoord1i (s);
2102 glVertex2f (p1.x, p1.y);
2103 }
2104 }
2105 glEnd ();
2106
2107 glDisable (GL_BLEND);
2108 glDisable (GL_TEXTURE_1D);
2109 }
2110
2111 static int compareslinks (const void *l, const void *r)
2112 {
2113 struct slink const *ls = l;
2114 struct slink const *rs = r;
2115 if (ls->bbox.y0 == rs->bbox.y0) {
2116 return rs->bbox.x0 - rs->bbox.x0;
2117 }
2118 return ls->bbox.y0 - rs->bbox.y0;
2119 }
2120
2121 static void droptext (struct page *page)
2122 {
2123 if (page->text) {
2124 fz_free_text_page (state.ctx, page->text);
2125 page->fmark.i = -1;
2126 page->lmark.i = -1;
2127 page->fmark.span = NULL;
2128 page->lmark.span = NULL;
2129 page->text = NULL;
2130 }
2131 if (page->sheet) {
2132 fz_free_text_sheet (state.ctx, page->sheet);
2133 }
2134 }
2135
2136 static void dropslinks (struct page *page)
2137 {
2138 if (page->slinks) {
2139 free (page->slinks);
2140 page->slinks = NULL;
2141 page->slinkcount = 0;
2142 }
2143 }
2144
2145 static void ensureslinks (struct page *page)
2146 {
2147 fz_matrix ctm;
2148 int i, count = 0;
2149 size_t slinksize = sizeof (*page->slinks);
2150 fz_link *link, *links;
2151
2152 if (state.gen != page->sgen) {
2153 dropslinks (page);
2154 page->sgen = state.gen;
2155 }
2156 if (page->slinks) return;
2157
2158 switch (page->type) {
2159 case DPDF:
2160 links = page->u.pdfpage->links;
2161 trimctm (page->u.pdfpage, page->pdimno);
2162 fz_concat (&ctm,
2163 &state.pagedims[page->pdimno].tctm,
2164 &state.pagedims[page->pdimno].ctm);
2165 break;
2166
2167 case DXPS:
2168 links = page->u.xpspage->links;
2169 ctm = state.pagedims[page->pdimno].ctm;
2170 break;
2171
2172 default:
2173 return;
2174 }
2175
2176 for (link = links; link; link = link->next) {
2177 count++;
2178 }
2179 if (count > 0) {
2180 page->slinkcount = count;
2181 page->slinks = calloc (count, slinksize);
2182 if (!page->slinks) {
2183 err (1, "realloc slinks %d", count);
2184 }
2185
2186 for (i = 0, link = links; link; ++i, link = link->next) {
2187 fz_rect rect;
2188
2189 rect = link->rect;
2190 fz_transform_rect (&rect, &ctm);
2191 page->slinks[i].link = link;
2192 fz_round_rect (&page->slinks[i].bbox, &rect);
2193 }
2194 qsort (page->slinks, count, slinksize, compareslinks);
2195 }
2196 }
2197
2198 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2199 static void fmt_linkn (char *s, unsigned int u)
2200 {
2201 unsigned int len; unsigned int q;
2202 int zma = 'z' - 'a' + 1;
2203 len = 1; q = u;
2204 while (q > zma - 1) { ++len; q /= zma; }
2205 if (s) {
2206 s += len;
2207 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2208 /* handles u == 0 */
2209 }
2210 s[len] = 0;
2211 }
2212
2213 static void highlightslinks (struct page *page, int xoff, int yoff,
2214 int noff, char *targ, int tlen, int hfsize)
2215 {
2216 int i;
2217 char buf[40];
2218 struct slink *slink;
2219 double x0, y0, x1, y1, w;
2220
2221 ensureslinks (page);
2222 glColor3ub (0xc3, 0xb0, 0x91);
2223 for (i = 0; i < page->slinkcount; ++i) {
2224 fmt_linkn (buf, i + noff);
2225 if (!tlen || !strncmp (targ, buf, tlen)) {
2226 slink = &page->slinks[i];
2227
2228 x0 = slink->bbox.x0 + xoff - 5;
2229 y1 = slink->bbox.y0 + yoff - 5;
2230 y0 = y1 + 10 + hfsize;
2231 w = measure_string (state.face, hfsize, buf);
2232 x1 = x0 + w + 10;
2233 glRectd (x0, y0, x1, y1);
2234 }
2235 }
2236
2237 glEnable (GL_BLEND);
2238 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2239 glEnable (GL_TEXTURE_2D);
2240 glColor3ub (0, 0, 0);
2241 for (i = 0; i < page->slinkcount; ++i) {
2242 fmt_linkn (buf, i + noff);
2243 if (!tlen || !strncmp (targ, buf, tlen)) {
2244 slink = &page->slinks[i];
2245
2246 x0 = slink->bbox.x0 + xoff;
2247 y0 = slink->bbox.y0 + yoff + hfsize;
2248 draw_string (state.face, hfsize, x0, y0, buf);
2249 }
2250 }
2251 glDisable (GL_TEXTURE_2D);
2252 glDisable (GL_BLEND);
2253 }
2254
2255
2256 static void uploadslice (struct tile *tile, struct slice *slice)
2257 {
2258 int offset;
2259 struct slice *slice1;
2260 unsigned char *texdata;
2261
2262 offset = 0;
2263 for (slice1 = tile->slices; slice != slice1; slice1++) {
2264 offset += slice1->h * tile->w * tile->pixmap->n;
2265 }
2266 if (slice->texindex != -1 && slice->texindex < state.texcount
2267 && state.texowners[slice->texindex].slice == slice) {
2268 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2269 }
2270 else {
2271 int subimage = 0;
2272 int texindex = state.texindex++ % state.texcount;
2273
2274 if (state.texowners[texindex].w == tile->w) {
2275 if (state.texowners[texindex].h >= slice->h) {
2276 subimage = 1;
2277 }
2278 else {
2279 state.texowners[texindex].h = slice->h;
2280 }
2281 }
2282 else {
2283 state.texowners[texindex].h = slice->h;
2284 }
2285
2286 state.texowners[texindex].w = tile->w;
2287 state.texowners[texindex].slice = slice;
2288 slice->texindex = texindex;
2289
2290 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2291 if (tile->pbo) {
2292 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2293 texdata = 0;
2294 }
2295 else {
2296 texdata = tile->pixmap->samples;
2297 }
2298 if (subimage) {
2299 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2300 0,
2301 0,
2302 0,
2303 tile->w,
2304 slice->h,
2305 state.texform,
2306 state.texty,
2307 texdata+offset
2308 );
2309 }
2310 else {
2311 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2312 0,
2313 state.texiform,
2314 tile->w,
2315 slice->h,
2316 0,
2317 state.texform,
2318 state.texty,
2319 texdata+offset
2320 );
2321 }
2322 if (tile->pbo) {
2323 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2324 }
2325 }
2326 }
2327
2328 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2329 {
2330 CAMLparam2 (args_v, ptr_v);
2331 int dispx = Int_val (Field (args_v, 0));
2332 int dispy = Int_val (Field (args_v, 1));
2333 int dispw = Int_val (Field (args_v, 2));
2334 int disph = Int_val (Field (args_v, 3));
2335 int tilex = Int_val (Field (args_v, 4));
2336 int tiley = Int_val (Field (args_v, 5));
2337 char *s = String_val (ptr_v);
2338 struct tile *tile = parse_pointer ("ml_drawtile", s);
2339
2340 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2341 {
2342 int slicey, firstslice;
2343 struct slice *slice;
2344
2345 firstslice = tiley / tile->sliceheight;
2346 slice = &tile->slices[firstslice];
2347 slicey = tiley % tile->sliceheight;
2348
2349 while (disph > 0) {
2350 int dh;
2351
2352 dh = slice->h - slicey;
2353 dh = MIN (disph, dh);
2354 uploadslice (tile, slice);
2355
2356 glBegin (GL_QUADS);
2357 {
2358 glTexCoord2i (tilex, slicey);
2359 glVertex2i (dispx, dispy);
2360
2361 glTexCoord2i (tilex+dispw, slicey);
2362 glVertex2i (dispx+dispw, dispy);
2363
2364 glTexCoord2i (tilex+dispw, slicey+dh);
2365 glVertex2i (dispx+dispw, dispy+dh);
2366
2367 glTexCoord2i (tilex, slicey+dh);
2368 glVertex2i (dispx, dispy+dh);
2369 }
2370 glEnd ();
2371
2372 dispy += dh;
2373 disph -= dh;
2374 slice++;
2375 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2376 slicey = 0;
2377 }
2378 }
2379 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2380 CAMLreturn (Val_unit);
2381 }
2382
2383 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2384 value xoff_v, value yoff_v,
2385 value li_v)
2386 {
2387 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2388 int xoff = Int_val (xoff_v);
2389 int yoff = Int_val (yoff_v);
2390 int noff = Int_val (Field (li_v, 0));
2391 char *targ = String_val (Field (li_v, 1));
2392 int tlen = caml_string_length (Field (li_v, 1));
2393 int hfsize = Int_val (Field (li_v, 2));
2394 char *s = String_val (ptr_v);
2395 int hlmask = Int_val (hlinks_v);
2396 struct page *page = parse_pointer ("ml_postprocess", s);
2397
2398 if (!page->u.ptr) {
2399 /* deal with loadpage failed pages */
2400 goto done;
2401 }
2402
2403 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2404 if (trylock ("ml_postprocess")) {
2405 noff = 0;
2406 goto done;
2407 }
2408 if (hlmask & 2) {
2409 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2410 noff = page->slinkcount;
2411 }
2412 showsel (page, xoff, yoff);
2413 unlock ("ml_postprocess");
2414
2415 done:
2416 CAMLreturn (Val_int (noff));
2417 }
2418
2419 static fz_link *getlink (struct page *page, int x, int y)
2420 {
2421 fz_point p;
2422 fz_matrix ctm;
2423 const fz_matrix *tctm;
2424 fz_link *link, *links;
2425
2426 switch (page->type) {
2427 case DPDF:
2428 trimctm (page->u.pdfpage, page->pdimno);
2429 tctm = &state.pagedims[page->pdimno].tctm;
2430 links = page->u.pdfpage->links;
2431 break;
2432
2433 case DXPS:
2434 tctm = &fz_identity;
2435 links = page->u.xpspage->links;
2436 break;
2437
2438 default:
2439 return NULL;
2440 }
2441 p.x = x;
2442 p.y = y;
2443
2444 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2445 fz_invert_matrix (&ctm, &ctm);
2446 fz_transform_point (&p, &ctm);
2447
2448 for (link = links; link; link = link->next) {
2449 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2450 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2451 return link;
2452 }
2453 }
2454 }
2455 return NULL;
2456 }
2457
2458 static void ensuretext (struct page *page)
2459 {
2460 if (state.gen != page->tgen) {
2461 droptext (page);
2462 page->tgen = state.gen;
2463 }
2464 if (!page->text) {
2465 fz_matrix ctm;
2466 fz_device *tdev;
2467
2468 page->text = fz_new_text_page (state.ctx, &fz_infinite_rect);
2469 page->sheet = fz_new_text_sheet (state.ctx);
2470 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2471 ctm = pagectm (page);
2472 fz_run_display_list (page->dlist, tdev, &ctm, &fz_infinite_rect, NULL);
2473 qsort (page->text->blocks, page->text->len,
2474 sizeof (*page->text->blocks), compareblocks);
2475 fz_free_device (tdev);
2476 }
2477 }
2478
2479 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2480 {
2481 CAMLparam2 (start_page_v, dir_v);
2482 CAMLlocal1 (ret_v);
2483 int i, dir = Int_val (dir_v);
2484 int start_page = Int_val (start_page_v);
2485 int end_page = dir > 0 ? state.pagecount : -1;
2486
2487 ret_v = Val_int (0);
2488 if (!(state.type == DPDF || state.type == DXPS)) {
2489 goto done;
2490 }
2491
2492 lock ("ml_findpage_with_links");
2493 for (i = start_page + dir; i != end_page; i += dir) {
2494 int found;
2495
2496 switch (state.type) {
2497 case DPDF:
2498 {
2499 pdf_page *page = NULL;
2500
2501 fz_try (state.ctx) {
2502 page = pdf_load_page (state.u.pdf, i);
2503 found = !!page->links;
2504 }
2505 fz_catch (state.ctx) {
2506 found = 0;
2507 }
2508 if (page) {
2509 freepdfpage (page);
2510 }
2511 }
2512 break;
2513 case DXPS:
2514 {
2515 xps_page *page = xps_load_page (state.u.xps, i);
2516 found = !!page->links;
2517 freexpspage (page);
2518 }
2519 break;
2520
2521 default:
2522 ARSERT ("invalid document type");
2523 }
2524
2525 if (found) {
2526 ret_v = caml_alloc_small (1, 1);
2527 Field (ret_v, 0) = Val_int (i);
2528 goto unlock;
2529 }
2530 }
2531 unlock:
2532 unlock ("ml_findpage_with_links");
2533
2534 done:
2535 CAMLreturn (ret_v);
2536 }
2537
2538 enum { dir_first, dir_last};
2539 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2540
2541 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2542 {
2543 CAMLparam2 (ptr_v, dir_v);
2544 CAMLlocal2 (ret_v, pos_v);
2545 struct page *page;
2546 int dirtag, i, slinkindex;
2547 struct slink *found = NULL ,*slink;
2548 char *s = String_val (ptr_v);
2549
2550 page = parse_pointer ("ml_findlink", s);
2551 ret_v = Val_int (0);
2552 if (trylock ("ml_findlink")) {
2553 goto done;
2554 }
2555
2556 ensureslinks (page);
2557
2558 if (Is_block (dir_v)) {
2559 dirtag = Tag_val (dir_v);
2560 switch (dirtag) {
2561 case dir_first_visible:
2562 {
2563 int x0, y0, dir, first_index, last_index;
2564
2565 pos_v = Field (dir_v, 0);
2566 x0 = Int_val (Field (pos_v, 0));
2567 y0 = Int_val (Field (pos_v, 1));
2568 dir = Int_val (Field (pos_v, 2));
2569
2570 if (dir >= 0) {
2571 dir = 1;
2572 first_index = 0;
2573 last_index = page->slinkcount;
2574 }
2575 else {
2576 first_index = page->slinkcount - 1;
2577 last_index = -1;
2578 }
2579
2580 for (i = first_index; i != last_index; i += dir) {
2581 slink = &page->slinks[i];
2582 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2583 found = slink;
2584 break;
2585 }
2586 }
2587 }
2588 break;
2589
2590 case dir_left:
2591 slinkindex = Int_val (Field (dir_v, 0));
2592 found = &page->slinks[slinkindex];
2593 for (i = slinkindex - 1; i >= 0; --i) {
2594 slink = &page->slinks[i];
2595 if (slink->bbox.x0 < found->bbox.x0) {
2596 found = slink;
2597 break;
2598 }
2599 }
2600 break;
2601
2602 case dir_right:
2603 slinkindex = Int_val (Field (dir_v, 0));
2604 found = &page->slinks[slinkindex];
2605 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2606 slink = &page->slinks[i];
2607 if (slink->bbox.x0 > found->bbox.x0) {
2608 found = slink;
2609 break;
2610 }
2611 }
2612 break;
2613
2614 case dir_down:
2615 slinkindex = Int_val (Field (dir_v, 0));
2616 found = &page->slinks[slinkindex];
2617 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2618 slink = &page->slinks[i];
2619 if (slink->bbox.y0 >= found->bbox.y0) {
2620 found = slink;
2621 break;
2622 }
2623 }
2624 break;
2625
2626 case dir_up:
2627 slinkindex = Int_val (Field (dir_v, 0));
2628 found = &page->slinks[slinkindex];
2629 for (i = slinkindex - 1; i >= 0; --i) {
2630 slink = &page->slinks[i];
2631 if (slink->bbox.y0 <= found->bbox.y0) {
2632 found = slink;
2633 break;
2634 }
2635 }
2636 break;
2637 }
2638 }
2639 else {
2640 dirtag = Int_val (dir_v);
2641 switch (dirtag) {
2642 case dir_first:
2643 found = page->slinks;
2644 break;
2645
2646 case dir_last:
2647 if (page->slinks) {
2648 found = page->slinks + (page->slinkcount - 1);
2649 }
2650 break;
2651 }
2652 }
2653 if (found) {
2654 ret_v = caml_alloc_small (2, 1);
2655 Field (ret_v, 0) = Val_int (found - page->slinks);
2656 }
2657
2658 unlock ("ml_findlink");
2659 done:
2660 CAMLreturn (ret_v);
2661 }
2662
2663 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2664
2665 #define LINKTOVAL \
2666 { \
2667 int pageno; \
2668 \
2669 switch (link->dest.kind) { \
2670 case FZ_LINK_GOTO: \
2671 { \
2672 fz_point p; \
2673 \
2674 pageno = link->dest.ld.gotor.page; \
2675 p.x = 0; \
2676 p.y = 0; \
2677 \
2678 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2679 p.y = link->dest.ld.gotor.lt.y; \
2680 fz_transform_point (&p, &pdim->lctm); \
2681 } \
2682 tup_v = caml_alloc_tuple (2); \
2683 ret_v = caml_alloc_small (1, ugoto); \
2684 Field (tup_v, 0) = Val_int (pageno); \
2685 Field (tup_v, 1) = Val_int (p.y); \
2686 Field (ret_v, 0) = tup_v; \
2687 } \
2688 break; \
2689 \
2690 case FZ_LINK_URI: \
2691 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2692 ret_v = caml_alloc_small (1, uuri); \
2693 Field (ret_v, 0) = str_v; \
2694 break; \
2695 \
2696 case FZ_LINK_LAUNCH: \
2697 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2698 ret_v = caml_alloc_small (1, ulaunch); \
2699 Field (ret_v, 0) = str_v; \
2700 break; \
2701 \
2702 case FZ_LINK_NAMED: \
2703 str_v = caml_copy_string (link->dest.ld.named.named); \
2704 ret_v = caml_alloc_small (1, unamed); \
2705 Field (ret_v, 0) = str_v; \
2706 break; \
2707 \
2708 case FZ_LINK_GOTOR: \
2709 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2710 pageno = link->dest.ld.gotor.page; \
2711 tup_v = caml_alloc_tuple (2); \
2712 ret_v = caml_alloc_small (1, uremote); \
2713 Field (tup_v, 0) = str_v; \
2714 Field (tup_v, 1) = Val_int (pageno); \
2715 Field (ret_v, 0) = tup_v; \
2716 break; \
2717 \
2718 default: \
2719 { \
2720 char buf[80]; \
2721 \
2722 snprintf (buf, sizeof (buf), \
2723 "unhandled link kind %d", link->dest.kind); \
2724 str_v = caml_copy_string (buf); \
2725 ret_v = caml_alloc_small (1, uunexpected); \
2726 Field (ret_v, 0) = str_v; \
2727 } \
2728 break; \
2729 } \
2730 }
2731
2732 CAMLprim value ml_getlink (value ptr_v, value n_v)
2733 {
2734 CAMLparam2 (ptr_v, n_v);
2735 CAMLlocal3 (ret_v, tup_v, str_v);
2736 fz_link *link;
2737 struct page *page;
2738 struct pagedim *pdim;
2739 char *s = String_val (ptr_v);
2740
2741 ret_v = Val_int (0);
2742 if (trylock ("ml_getlink")) {
2743 goto done;
2744 }
2745
2746 page = parse_pointer ("ml_getlink", s);
2747 ensureslinks (page);
2748 pdim = &state.pagedims[page->pdimno];
2749 link = page->slinks[Int_val (n_v)].link;
2750 LINKTOVAL;
2751
2752 unlock ("ml_getlink");
2753 done:
2754 CAMLreturn (ret_v);
2755 }
2756
2757 CAMLprim value ml_getlinkcount (value ptr_v)
2758 {
2759 CAMLparam1 (ptr_v);
2760 struct page *page;
2761 char *s = String_val (ptr_v);
2762
2763 page = parse_pointer ("ml_getlinkcount", s);
2764 CAMLreturn (Val_int (page->slinkcount));
2765 }
2766
2767 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2768 {
2769 CAMLparam2 (ptr_v, n_v);
2770 CAMLlocal1 (ret_v);
2771 struct page *page;
2772 struct slink *slink;
2773 char *s = String_val (ptr_v);
2774
2775 page = parse_pointer ("ml_getlinkrect", s);
2776 ret_v = caml_alloc_tuple (4);
2777 if (trylock ("ml_getlinkrect")) {
2778 Field (ret_v, 0) = Val_int (0);
2779 Field (ret_v, 1) = Val_int (0);
2780 Field (ret_v, 2) = Val_int (0);
2781 Field (ret_v, 3) = Val_int (0);
2782 goto done;
2783 }
2784 ensureslinks (page);
2785
2786 slink = &page->slinks[Int_val (n_v)];
2787 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2788 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2789 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2790 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2791 unlock ("ml_getlinkrect");
2792
2793 done:
2794 CAMLreturn (ret_v);
2795 }
2796
2797 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2798 {
2799 CAMLparam3 (ptr_v, x_v, y_v);
2800 CAMLlocal3 (ret_v, tup_v, str_v);
2801 fz_link *link;
2802 struct page *page;
2803 char *s = String_val (ptr_v);
2804 int x = Int_val (x_v), y = Int_val (y_v);
2805 struct pagedim *pdim;
2806
2807 ret_v = Val_int (0);
2808 if (trylock ("ml_whatsunder")) {
2809 goto done;
2810 }
2811
2812 page = parse_pointer ("ml_whatsunder", s);
2813 pdim = &state.pagedims[page->pdimno];
2814 x += pdim->bounds.x0;
2815 y += pdim->bounds.y0;
2816 link = getlink (page, x, y);
2817 if (link) {
2818 LINKTOVAL;
2819 }
2820 else {
2821 fz_rect *b;
2822 fz_text_block *block;
2823
2824 ensuretext (page);
2825 for (block = page->text->blocks;
2826 block < page->text->blocks + page->text->len;
2827 ++block) {
2828 fz_text_line *line;
2829
2830 b = &block->bbox;
2831 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2832 continue;
2833
2834 for (line = block->lines;
2835 line < block->lines + block->len;
2836 ++line) {
2837 fz_text_span *span;
2838
2839 b = &line->bbox;
2840 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2841 continue;
2842
2843 for (span = line->spans;
2844 span < line->spans + line->len;
2845 ++span) {
2846 fz_text_char *ch;
2847
2848 b = &span->bbox;
2849 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2850 continue;
2851
2852 for (ch = span->text; ch < span->text + span->len; ++ch) {
2853 b = &ch->bbox;
2854
2855 if (x >= b->x0 && x <= b->x1
2856 && y >= b->y0 && y <= b->y1) {
2857 const char *n2 =
2858 span->style->font && span->style->font->name
2859 ? span->style->font->name
2860 : "Span has no font name"
2861 ;
2862 FT_FaceRec *face = span->style->font->ft_face;
2863 if (face && face->family_name) {
2864 char *s;
2865 char *n1 = face->family_name;
2866 size_t l1 = strlen (n1);
2867 size_t l2 = strlen (n2);
2868
2869 if (l1 != l2 || memcmp (n1, n2, l1)) {
2870 s = malloc (l1 + l2 + 2);
2871 if (s) {
2872 memcpy (s, n2, l2);
2873 s[l2] = '=';
2874 memcpy (s + l2 + 1, n1, l1 + 1);
2875 str_v = caml_copy_string (s);
2876 free (s);
2877 }
2878 }
2879 }
2880 if (str_v == 0) {
2881 str_v = caml_copy_string (n2);
2882 }
2883 ret_v = caml_alloc_small (1, utext);
2884 Field (ret_v, 0) = str_v;
2885 goto unlock;
2886 }
2887 }
2888 }
2889 }
2890 }
2891 }
2892 unlock:
2893 unlock ("ml_whatsunder");
2894
2895 done:
2896 CAMLreturn (ret_v);
2897 }
2898
2899 CAMLprim value ml_seltext (value ptr_v, value rect_v)
2900 {
2901 CAMLparam2 (ptr_v, rect_v);
2902 fz_rect *b;
2903 struct page *page;
2904 struct pagedim *pdim;
2905 int i, x0, x1, y0, y1;
2906 char *s = String_val (ptr_v);
2907 int fi = 0, li = 0;
2908 fz_text_block *block;
2909 fz_text_span *span, *fspan, *lspan;
2910 fz_text_line *line, *fline = NULL, *lline = NULL;
2911
2912 if (trylock ("ml_seltext")) {
2913 goto done;
2914 }
2915
2916 page = parse_pointer ("ml_seltext", s);
2917 ensuretext (page);
2918
2919 pdim = &state.pagedims[page->pdimno];
2920 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
2921 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
2922 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
2923 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
2924
2925 if (0) {
2926 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2927 glColor3ub (128, 128, 128);
2928 glRecti (x0, y0, x1, y1);
2929 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2930 }
2931
2932 fspan = lspan = NULL;
2933
2934 for (block = page->text->blocks;
2935 block < page->text->blocks + page->text->len;
2936 ++block) {
2937 for (line = block->lines;
2938 line < block->lines + block->len;
2939 ++line) {
2940 for (span = line->spans;
2941 span < line->spans + line->len;
2942 ++span) {
2943 for (i = 0; i < span->len; ++i) {
2944 b = &span->text[i].bbox;
2945 int selected = 0;
2946
2947 if (x0 >= b->x0 && x0 <= b->x1
2948 && y0 >= b->y0 && y0 <= b->y1) {
2949 fspan = span;
2950 fline = line;
2951 fi = i;
2952 selected = 1;
2953 }
2954 if (x1 >= b->x0 && x1 <= b->x1
2955 && y1 >= b->y0 && y1 <= b->y1) {
2956 lspan = span;
2957 lline = line;
2958 li = i;
2959 selected = 1;
2960 }
2961 if (0 && selected) {
2962 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2963 glColor3ub (128, 128, 128);
2964 glRecti (b->x0, b->y0, b->x1, b->y1);
2965 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2966 }
2967 }
2968 }
2969 }
2970 }
2971 if (y1 < y0 || x1 < x0) {
2972 int swap = 0;
2973
2974 if (fspan == lspan) {
2975 swap = 1;
2976 }
2977 else {
2978 if (y1 < y0) {
2979 if (fline != lline) {
2980 swap = 1;
2981 }
2982 }
2983 }
2984
2985 if (swap) {
2986 i = fi;
2987 span = fspan;
2988
2989 fi = li;
2990 fspan = lspan;
2991
2992 li = i;
2993 lspan = span;
2994 }
2995 }
2996
2997 page->fmark.i = fi;
2998 page->fmark.span = fspan;
2999
3000 page->lmark.i = li;
3001 page->lmark.span = lspan;
3002
3003 unlock ("ml_seltext");
3004
3005 done:
3006 CAMLreturn (Val_unit);
3007 }
3008
3009 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
3010 {
3011 char buf[4];
3012 int i, len, ret;
3013
3014 for (i = a; i <= b; ++i) {
3015 len = fz_runetochar (buf, span->text[i].c);
3016 ret = fwrite (buf, len, 1, f);
3017
3018 if (ret != 1) {
3019 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
3020 len, ret, strerror (errno));
3021 return -1;
3022 }
3023 }
3024 return 0;
3025 }
3026
3027 #ifdef __CYGWIN__
3028 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
3029 {
3030 caml_failwith ("ml_popen not implemented under Cygwin");
3031 }
3032 #else
3033 CAMLprim value ml_popen (value command_v, value fds_v)
3034 {
3035 CAMLparam2 (command_v, fds_v);
3036 CAMLlocal2 (l_v, tup_v);
3037 int ret;
3038 char *msg = NULL;
3039 value earg_v = Nothing;
3040 posix_spawnattr_t attr;
3041 posix_spawn_file_actions_t fa;
3042 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
3043
3044 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3045 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3046 }
3047
3048 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3049 msg = "posix_spawnattr_init";
3050 goto fail1;
3051 }
3052
3053 #ifdef POSIX_SPAWN_USEVFORK
3054 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3055 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3056 goto fail;
3057 }
3058 #endif
3059
3060 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3061 int fd1, fd2;
3062
3063 tup_v = Field (l_v, 0);
3064 fd1 = Int_val (Field (tup_v, 0));
3065 fd2 = Int_val (Field (tup_v, 1));
3066 if (fd2 < 0) {
3067 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3068 msg = "posix_spawn_file_actions_addclose";
3069 earg_v = tup_v;
3070 goto fail;
3071 }
3072 }
3073 else {
3074 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3075 msg = "posix_spawn_file_actions_adddup2";
3076 earg_v = tup_v;
3077 goto fail;
3078 }
3079 }
3080 }
3081
3082 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
3083 msg = "posix_spawn";
3084 goto fail;
3085 }
3086
3087 fail:
3088 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3089 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3090 }
3091
3092 fail1:
3093 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3094 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3095 strerror (ret));
3096 }
3097
3098 if (msg)
3099 unix_error (ret, msg, earg_v);
3100
3101 CAMLreturn (Val_unit);
3102 }
3103 #endif
3104
3105 CAMLprim value ml_copysel (value fd_v, value ptr_v)
3106 {
3107 CAMLparam1 (ptr_v);
3108 FILE *f;
3109 int seen = 0;
3110 struct page *page;
3111 fz_text_line *line;
3112 fz_text_span *span;
3113 fz_text_block *block;
3114 int fd = Int_val (fd_v);
3115 char *s = String_val (ptr_v);
3116
3117 if (trylock ("ml_copysel")) {
3118 goto done;
3119 }
3120
3121 page = parse_pointer ("ml_sopysel", s);
3122
3123 if (!page->fmark.span || !page->lmark.span) {
3124 fprintf (stderr, "nothing to copy\n");
3125 goto unlock;
3126 }
3127
3128 f = fdopen (fd, "w");
3129 if (!f) {
3130 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3131 strerror (errno));
3132 f = stdout;
3133 }
3134
3135 for (block = page->text->blocks;
3136 block < page->text->blocks + page->text->len;
3137 ++block) {
3138 for (line = block->lines;
3139 line < block->lines + block->len;
3140 ++line) {
3141 for (span = line->spans;
3142 span < line->spans + line->len;
3143 ++span) {
3144 int a, b;
3145
3146 seen |= span == page->fmark.span || span == page->lmark.span;
3147 a = span == page->fmark.span ? page->fmark.i : 0;
3148 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3149
3150 if (seen) {
3151 if (pipespan (f, span, a, b)) {
3152 goto close;
3153 }
3154 if (span == line->spans + line->len - 1) {
3155 if (putc ('\n', f) == EOF) {
3156 fprintf (stderr,
3157 "failed break line on sel pipe: %s\n",
3158 strerror (errno));
3159 goto close;
3160 }
3161 }
3162 if (span == page->lmark.span) {
3163 goto endloop;
3164 }
3165 }
3166 }
3167 }
3168 }
3169 endloop:
3170 page->lmark.span = NULL;
3171 page->fmark.span = NULL;
3172
3173 close:
3174 if (f != stdout) {
3175 int ret = fclose (f);
3176 fd = -1;
3177 if (ret == -1) {
3178 if (errno != ECHILD) {
3179 fprintf (stderr, "failed to close sel pipe: %s\n",
3180 strerror (errno));
3181 }
3182 }
3183 }
3184 unlock:
3185 unlock ("ml_copysel");
3186
3187 done:
3188 if (fd >= 0) {
3189 if (close (fd)) {
3190 fprintf (stderr, "failed to close sel pipe: %s\n",
3191 strerror (errno));
3192 }
3193 }
3194 CAMLreturn (Val_unit);
3195 }
3196
3197 CAMLprim value ml_getpdimrect (value pagedimno_v)
3198 {
3199 CAMLparam1 (pagedimno_v);
3200 CAMLlocal1 (ret_v);
3201 int pagedimno = Int_val (pagedimno_v);
3202 fz_rect box;
3203
3204 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3205 if (trylock ("ml_getpdimrect")) {
3206 box = fz_empty_rect;
3207 }
3208 else {
3209 box = state.pagedims[pagedimno].mediabox;
3210 unlock ("ml_getpdimrect");
3211 }
3212
3213 Store_double_field (ret_v, 0, box.x0);
3214 Store_double_field (ret_v, 1, box.x1);
3215 Store_double_field (ret_v, 2, box.y0);
3216 Store_double_field (ret_v, 3, box.y1);
3217
3218 CAMLreturn (ret_v);
3219 }
3220
3221 static double getmaxw (void)
3222 {
3223 int i;
3224 struct pagedim *p;
3225 double maxw = 0.0;
3226
3227 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3228 double x0, x1, w;
3229
3230 x0 = MIN (p->mediabox.x0, p->mediabox.x1);
3231 x1 = MAX (p->mediabox.x0, p->mediabox.x1);
3232
3233 w = x1 - x0;
3234 maxw = MAX (w, maxw);
3235 }
3236 return maxw;
3237 }
3238
3239 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3240 value dw_v, value cols_v)
3241 {
3242 CAMLparam3 (winw_v, winh_v, dw_v);
3243 CAMLlocal1 (ret_v);
3244 int i;
3245 double zoom = 1.0;
3246 double maxw = 0.0, maxh = 0.0;
3247 struct pagedim *p;
3248 double winw = Int_val (winw_v);
3249 double winh = Int_val (winh_v);
3250 double dw = Int_val (dw_v);
3251 double cols = Int_val (cols_v);
3252 double pw = 1.0, ph = 1.0, aspect;
3253
3254 if (trylock ("ml_zoom_for_height")) {
3255 goto done;
3256 }
3257
3258 if (state.proportional) {
3259 maxw = getmaxw () / cols;
3260 }
3261
3262 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3263 fz_rect rect;
3264 fz_matrix rm;
3265 double x0, x1, y0, y1, w, h, scaledh, scale;
3266
3267 fz_rotate (&rm, p->rotate + state.rotate);
3268 rect = p->mediabox;
3269 fz_transform_rect (&rect, &rm);
3270 x0 = MIN (rect.x0, rect.x1);
3271 x1 = MAX (rect.x0, rect.x1);
3272 y0 = MIN (rect.y0, rect.y1);
3273 y1 = MAX (rect.y0, rect.y1);
3274
3275 w = (x1 - x0) / cols;
3276 h = y1 - y0;
3277
3278 if (state.proportional) {
3279 scale = w / maxw;
3280 scaledh = h * scale;
3281 }
3282 else {
3283 scale = 1.0;
3284 scaledh = h;
3285 }
3286
3287 if (scaledh > maxh) {
3288 maxh = scaledh;
3289 ph = scaledh;
3290 pw = w * scale;
3291 }
3292 }
3293
3294 aspect = pw / ph;
3295 zoom = (winh * aspect + dw) / winw;
3296
3297 unlock ("ml_zoom_for_height");
3298 done:
3299 ret_v = caml_copy_double (zoom);
3300 CAMLreturn (ret_v);
3301 }
3302
3303 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3304 {
3305 CAMLparam4 (pt_v, x_v, y_v, string_v);
3306 CAMLlocal1 (ret_v);
3307 int pt = Int_val(pt_v);
3308 int x = Int_val (x_v);
3309 int y = Int_val (y_v);
3310 double w;
3311
3312 w = draw_string (state.face, pt, x, y, String_val (string_v));
3313 ret_v = caml_copy_double (w);
3314 CAMLreturn (ret_v);
3315 }
3316
3317 CAMLprim value ml_measure_string (value pt_v, value string_v)
3318 {
3319 CAMLparam2 (pt_v, string_v);
3320 CAMLlocal1 (ret_v);
3321 int pt = Int_val (pt_v);
3322 double w;
3323
3324 w = measure_string (state.face, pt, String_val (string_v));
3325 ret_v = caml_copy_double (w);
3326 CAMLreturn (ret_v);
3327 }
3328
3329 CAMLprim value ml_getpagebox (value opaque_v)
3330 {
3331 CAMLparam1 (opaque_v);
3332 CAMLlocal1 (ret_v);
3333 fz_rect rect;
3334 fz_irect bbox;
3335 fz_matrix ctm;
3336 fz_device *dev;
3337 char *s = String_val (opaque_v);
3338 struct page *page = parse_pointer ("ml_getpagebox", s);
3339
3340 ret_v = caml_alloc_tuple (4);
3341 dev = fz_new_bbox_device (state.ctx, &rect);
3342 dev->hints |= FZ_IGNORE_SHADE;
3343
3344 switch (page->type) {
3345 case DPDF:
3346 ctm = pagectm (page);
3347 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, &ctm, NULL);
3348 break;
3349
3350 case DXPS:
3351 ctm = pagectm (page);
3352 xps_run_page (state.u.xps, page->u.xpspage, dev, &ctm, NULL);
3353 break;
3354
3355 default:
3356 rect = fz_infinite_rect;
3357 break;
3358 }
3359
3360 fz_free_device (dev);
3361 fz_round_rect (&bbox, &rect);
3362 Field (ret_v, 0) = Val_int (bbox.x0);
3363 Field (ret_v, 1) = Val_int (bbox.y0);
3364 Field (ret_v, 2) = Val_int (bbox.x1);
3365 Field (ret_v, 3) = Val_int (bbox.y1);
3366
3367 CAMLreturn (ret_v);
3368 }
3369
3370 CAMLprim value ml_setaalevel (value level_v)
3371 {
3372 CAMLparam1 (level_v);
3373
3374 state.aalevel = Int_val (level_v);
3375 CAMLreturn (Val_unit);
3376 }
3377
3378 #undef pixel
3379 #include <X11/Xlib.h>
3380 #include <GL/glx.h>
3381
3382 static struct {
3383 Display *dpy;
3384 GLXContext ctx;
3385 GLXDrawable drawable;
3386 } glx;
3387
3388 #include "keysym2ucs.c"
3389
3390 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3391 {
3392 CAMLparam1 (keysym_v);
3393 CAMLlocal1 (str_v);
3394 KeySym keysym = Int_val (keysym_v);
3395 Rune rune;
3396 int len;
3397 char buf[5];
3398
3399 rune = keysym2ucs (keysym);
3400 len = fz_runetochar (buf, rune);
3401 buf[len] = 0;
3402 str_v = caml_copy_string (buf);
3403 CAMLreturn (str_v);
3404 }
3405
3406 CAMLprim value ml_glx (value win_v)
3407 {
3408 CAMLparam1 (win_v);
3409 XVisualInfo *visual;
3410 int screen, wid = Int_val (win_v);
3411 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3412
3413 glx.dpy = XOpenDisplay (NULL);
3414 if (!glx.dpy) {
3415 caml_failwith ("XOpenDisplay");
3416 }
3417
3418 screen = DefaultScreen (glx.dpy);
3419 visual = glXChooseVisual (glx.dpy, screen, attributes);
3420 if (!visual) {
3421 XCloseDisplay (glx.dpy);
3422 glx.dpy = NULL;
3423 caml_failwith ("glXChooseVisual");
3424 }
3425
3426 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3427 XFree (visual);
3428 if (!glx.ctx) {
3429 XCloseDisplay (glx.dpy);
3430 glx.dpy = NULL;
3431 caml_failwith ("glXCreateContext");
3432 }
3433
3434 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3435 glXDestroyContext (glx.dpy, glx.ctx);
3436 XCloseDisplay (glx.dpy);
3437 glx.dpy = NULL;
3438 glx.ctx = NULL;
3439 caml_failwith ("glXMakeCurrent");
3440 }
3441 glx.drawable = wid;
3442 CAMLreturn (Val_unit);
3443 }
3444
3445 CAMLprim value ml_swapb (value unit_v)
3446 {
3447 CAMLparam1 (unit_v);
3448 glXSwapBuffers (glx.dpy, glx.drawable);
3449 CAMLreturn (Val_unit);
3450 }
3451
3452 CAMLprim value ml_glxsync (value unit_v)
3453 {
3454 CAMLparam1 (unit_v);
3455 if (glx.dpy && glx.ctx) {
3456 glXWaitX ();
3457 glXWaitGL ();
3458 }
3459 CAMLreturn (Val_unit);
3460 }
3461
3462 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3463 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3464
3465 CAMLprim value ml_platform (value unit_v)
3466 {
3467 CAMLparam1 (unit_v);
3468 int platid = piunknown;
3469
3470 #if defined __linux__
3471 platid = pilinux;
3472 #elif defined __CYGWIN__
3473 platid = picygwin;
3474 #elif defined __DragonFly__
3475 platid = pidragonflybsd;
3476 #elif defined __FreeBSD__
3477 platid = pifreebsd;
3478 #elif defined __OpenBSD__
3479 platid = piopenbsd;
3480 #elif defined __NetBSD__
3481 platid = pinetbsd;
3482 #elif defined __sun__
3483 platid = pisun;
3484 #elif defined __APPLE__
3485 platid = piosx;
3486 #endif
3487 CAMLreturn (Val_int (platid));
3488 }
3489
3490 CAMLprim value ml_cloexec (value fd_v)
3491 {
3492 CAMLparam1 (fd_v);
3493 int fd = Int_val (fd_v);
3494
3495 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3496 uerror ("fcntl", Nothing);
3497 }
3498 CAMLreturn (Val_unit);
3499 }
3500
3501 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3502 {
3503 CAMLparam2 (w_v, h_v);
3504 CAMLlocal1 (ret_v);
3505 struct pbo *pbo;
3506 int w = Int_val (w_v);
3507 int h = Int_val (h_v);
3508 int cs = Int_val (cs_v);
3509
3510 if (state.pbo_usable) {
3511 pbo = calloc (sizeof (*pbo), 1);
3512 if (!pbo) {
3513 err (1, "calloc pbo");
3514 }
3515
3516 switch (cs) {
3517 case 0:
3518 case 1:
3519 pbo->size = w*h*4;
3520 break;
3521 case 2:
3522 pbo->size = w*h*2;
3523 break;
3524 default:
3525 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3526 }
3527
3528 state.glGenBuffersARB (1, &pbo->id);
3529 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3530 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3531 NULL, GL_STREAM_DRAW);
3532 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3533 GL_READ_WRITE);
3534 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3535 if (!pbo->ptr) {
3536 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3537 state.glDeleteBuffersARB (1, &pbo->id);
3538 free (pbo);
3539 ret_v = caml_copy_string ("0");
3540 }
3541 else {
3542 int res;
3543 char *s;
3544
3545 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3546 if (res < 0) {
3547 err (1, "snprintf %" FMT_ptr " failed", pbo);
3548 }
3549 s = malloc (res+1);
3550 if (!s) {
3551 err (1, "malloc %d bytes failed", res+1);
3552 }
3553 res = sprintf (s, "%" FMT_ptr, pbo);
3554 if (res < 0) {
3555 err (1, "sprintf %" FMT_ptr " failed", pbo);
3556 }
3557 ret_v = caml_copy_string (s);
3558 free (s);
3559 }
3560 }
3561 else {
3562 ret_v = caml_copy_string ("0");
3563 }
3564 CAMLreturn (ret_v);
3565 }
3566
3567 CAMLprim value ml_freepbo (value s_v)
3568 {
3569 CAMLparam1 (s_v);
3570 char *s = String_val (s_v);
3571 struct tile *tile = parse_pointer ("ml_freepbo", s);
3572
3573 if (tile->pbo) {
3574 state.glDeleteBuffersARB (1, &tile->pbo->id);
3575 tile->pbo->id = -1;
3576 tile->pbo->ptr = NULL;
3577 tile->pbo->size = -1;
3578 }
3579 CAMLreturn (Val_unit);
3580 }
3581
3582 CAMLprim value ml_unmappbo (value s_v)
3583 {
3584 CAMLparam1 (s_v);
3585 char *s = String_val (s_v);
3586 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3587
3588 if (tile->pbo) {
3589 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3590 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3591 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3592 }
3593 tile->pbo->ptr = NULL;
3594 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3595 }
3596 CAMLreturn (Val_unit);
3597 }
3598
3599 static void setuppbo (void)
3600 {
3601 #define GGPA(n) *(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n)
3602 GGPA (glBindBufferARB);
3603 if (state.glBindBufferARB) {
3604 GGPA (glUnmapBufferARB);
3605 if (state.glUnmapBufferARB) {
3606 GGPA (glMapBufferARB);
3607 if (state.glMapBufferARB) {
3608 GGPA (glBufferDataARB);
3609 if (state.glBufferDataARB) {
3610 GGPA (glGenBuffersARB);
3611 if (state.glGenBuffersARB) {
3612 GGPA (glDeleteBuffersARB);
3613 if (state.glDeleteBuffersARB) {
3614 state.pbo_usable = 1;
3615 }
3616 }
3617 }
3618 }
3619 }
3620 }
3621 #undef GGPA
3622 }
3623
3624 CAMLprim value ml_pbo_usable (value unit_v)
3625 {
3626 CAMLparam1 (unit_v);
3627 CAMLreturn (Val_bool (state.pbo_usable));
3628 }
3629
3630 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
3631 {
3632 CAMLparam3 (ptr_v, x_v, y_v);
3633 CAMLlocal2 (ret_v, tup_v);
3634 struct page *page;
3635 char *s = String_val (ptr_v);
3636 int x = Int_val (x_v), y = Int_val (y_v);
3637 struct pagedim *pdim;
3638 fz_point p;
3639 fz_matrix ctm;
3640
3641 page = parse_pointer ("ml_unproject", s);
3642 pdim = &state.pagedims[page->pdimno];
3643
3644 ret_v = Val_int (0);
3645 if (trylock ("ml_unproject")) {
3646 goto done;
3647 }
3648
3649 switch (page->type) {
3650 case DPDF:
3651 trimctm (page->u.pdfpage, page->pdimno);
3652 break;
3653
3654 default:
3655 break;
3656 }
3657 p.x = x;
3658 p.y = y;
3659
3660 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
3661 fz_invert_matrix (&ctm, &ctm);
3662 fz_transform_point (&p, &ctm);
3663
3664 tup_v = caml_alloc_tuple (2);
3665 ret_v = caml_alloc_small (1, 1);
3666 Field (tup_v, 0) = Val_int (p.x);
3667 Field (tup_v, 1) = Val_int (p.y);
3668 Field (ret_v, 0) = tup_v;
3669
3670 unlock ("ml_unproject");
3671 done:
3672 CAMLreturn (ret_v);
3673 }
3674
3675 static void makestippletex (void)
3676 {
3677 const char *pixels = "\0\0\xff\xff";
3678 glGenTextures (1, &state.stid);
3679 glBindTexture (GL_TEXTURE_1D, state.stid);
3680 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
3681 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
3682 glTexImage1D (
3683 GL_TEXTURE_1D,
3684 0,
3685 GL_ALPHA,
3686 4,
3687 0,
3688 GL_ALPHA,
3689 GL_UNSIGNED_BYTE,
3690 pixels
3691 );
3692 }
3693
3694 CAMLprim value ml_init (value pipe_v, value params_v)
3695 {
3696 CAMLparam2 (pipe_v, params_v);
3697 CAMLlocal2 (trim_v, fuzz_v);
3698 int ret;
3699 int texcount;
3700 char *fontpath;
3701 int colorspace;
3702 int mustoresize;
3703 int haspboext;
3704 struct sigaction sa;
3705
3706 state.cr = Int_val (Field (pipe_v, 0));
3707 state.cw = Int_val (Field (pipe_v, 1));
3708 state.rotate = Int_val (Field (params_v, 0));
3709 state.proportional = Bool_val (Field (params_v, 1));
3710 trim_v = Field (params_v, 2);
3711 texcount = Int_val (Field (params_v, 3));
3712 state.sliceheight = Int_val (Field (params_v, 4));
3713 mustoresize = Int_val (Field (params_v, 5));
3714 colorspace = Int_val (Field (params_v, 6));
3715 fontpath = String_val (Field (params_v, 7));
3716 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3717 if (!state.trimcachepath) {
3718 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
3719 strerror (errno));
3720 }
3721 haspboext = Bool_val (Field (params_v, 9));
3722
3723 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3724
3725 state.trimmargins = Bool_val (Field (trim_v, 0));
3726 fuzz_v = Field (trim_v, 1);
3727 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3728 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3729 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3730 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3731
3732 set_tex_params (colorspace);
3733
3734 if (*fontpath) {
3735 state.face = load_font (fontpath);
3736 }
3737 else {
3738 unsigned int len;
3739 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3740
3741 state.face = load_builtin_font (base, len);
3742 }
3743 if (!state.face) _exit (1);
3744
3745 realloctexts (texcount);
3746
3747 if (haspboext) {
3748 setuppbo ();
3749 }
3750
3751 makestippletex ();
3752 #ifdef __CYGWIN__
3753 sa.sa_handler = SIG_IGN;
3754 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
3755 #else
3756 sa.sa_handler = SIG_DFL;
3757 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
3758 #endif
3759 if (sigemptyset (&sa.sa_mask)) {
3760 err (1, "sigemptyset");
3761 }
3762 if (sigaction (SIGCHLD, &sa, NULL)) {
3763 err (1, "sigaction");
3764 }
3765
3766 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
3767 if (ret) {
3768 errx (1, "pthread_create: %s", strerror (ret));
3769 }
3770
3771 CAMLreturn (Val_unit);
3772 }
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