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I feel dirty
[llpp.git] / link.c
blob45d76c496769d0273af994009bdafe9554501e7b
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 enum { FitWidth, FitProportional, FitPage } fitmodel;
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 <stdint.h>
602 #include <altivec.h>
603
604 static int cacheline32bytes;
605
606 static void __attribute__ ((constructor)) clcheck (void)
607 {
608 char **envp = environ;
609 unsigned long *auxv;
610
611 while (*envp++);
612
613 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
614 if (*auxv == 19) {
615 cacheline32bytes = auxv[1] == 32;
616 return;
617 }
618 }
619 }
620
621 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
622 {
623 size_t size = pixmap->w * pixmap->h * pixmap->n;
624 if (cacheline32bytes && size > 32) {
625 intptr_t a1, a2, diff;
626 size_t sizea, i;
627 vector unsigned char v = vec_splat_u8 (-1);
628 vector unsigned char *p;
629
630 a1 = a2 = (intptr_t) pixmap->samples;
631 a2 = (a1 + 31) & ~31;
632 diff = a2 - a1;
633 sizea = size - diff;
634 p = (void *) a2;
635
636 while (a1 != a2) *(char *) a1++ = 0xff;
637 for (i = 0; i < (sizea & ~31); i += 32) {
638 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
639 vec_st (v, i, p);
640 vec_st (v, i + 16, p);
641 }
642 while (i < sizea) *((char *) a1 + i++) = 0xff;
643 }
644 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
645 }
646 #else
647 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
648 #endif
649
650 static void trimctm (pdf_page *page, int pindex)
651 {
652 fz_matrix ctm;
653 struct pagedim *pdim = &state.pagedims[pindex];
654
655 if (!pdim->tctmready) {
656 if (state.trimmargins) {
657 fz_rect realbox;
658 fz_matrix rm, sm, tm, im, ctm1;
659
660 fz_rotate (&rm, -pdim->rotate);
661 fz_scale (&sm, 1, -1);
662 fz_concat (&ctm, &rm, &sm);
663 realbox = pdim->mediabox;
664 fz_transform_rect (&realbox, &ctm);
665 fz_translate (&tm, -realbox.x0, -realbox.y0);
666 fz_concat (&ctm1, &ctm, &tm);
667 fz_invert_matrix (&im, &page->ctm);
668 fz_concat (&ctm, &im, &ctm1);
669 }
670 else {
671 ctm = fz_identity;
672 }
673 pdim->tctm = ctm;
674 pdim->tctmready = 1;
675 }
676 }
677
678 static fz_matrix pagectm (struct page *page)
679 {
680 fz_matrix ctm, tm;
681
682 if (page->type == DPDF) {
683 trimctm (page->u.pdfpage, page->pdimno);
684 fz_concat (&ctm,
685 &state.pagedims[page->pdimno].tctm,
686 &state.pagedims[page->pdimno].ctm);
687 }
688 else {
689 struct pagedim *pdim = &state.pagedims[page->pdimno];
690
691 fz_translate (&tm, -pdim->mediabox.x0, -pdim->mediabox.y0);
692 fz_concat (&ctm, &tm, &state.pagedims[page->pdimno].ctm);
693 }
694 return ctm;
695 }
696
697 static void *loadpage (int pageno, int pindex)
698 {
699 fz_device *dev;
700 struct page *page = NULL;
701
702 page = calloc (sizeof (struct page), 1);
703 if (!page) {
704 err (1, "calloc page %d", pageno);
705 }
706
707 page->dlist = fz_new_display_list (state.ctx);
708 dev = fz_new_list_device (state.ctx, page->dlist);
709 fz_try (state.ctx) {
710 switch (state.type) {
711 case DPDF:
712 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
713 pdf_run_page (state.u.pdf, page->u.pdfpage, dev,
714 &fz_identity, NULL);
715 page->freepage = freepdfpage;
716 break;
717
718 case DXPS:
719 page->u.xpspage = xps_load_page (state.u.xps, pageno);
720 xps_run_page (state.u.xps, page->u.xpspage, dev,
721 &fz_identity, NULL);
722 page->freepage = freexpspage;
723 break;
724
725 case DCBZ:
726 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
727 cbz_run_page (state.u.cbz, page->u.cbzpage, dev,
728 &fz_identity, NULL);
729 page->freepage = freecbzpage;
730 break;
731 }
732 }
733 fz_catch (state.ctx) {
734 page->u.ptr = NULL;
735 page->freepage = freeemptyxxxpage;
736 }
737 fz_free_device (dev);
738
739 page->pdimno = pindex;
740 page->pageno = pageno;
741 page->sgen = state.gen;
742 page->tgen = state.gen;
743 page->type = state.type;
744
745 return page;
746 }
747
748 static struct tile *alloctile (int h)
749 {
750 int i;
751 int slicecount;
752 size_t tilesize;
753 struct tile *tile;
754
755 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
756 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
757 tile = calloc (tilesize, 1);
758 if (!tile) {
759 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
760 }
761 for (i = 0; i < slicecount; ++i) {
762 int sh = MIN (h, state.sliceheight);
763 tile->slices[i].h = sh;
764 tile->slices[i].texindex = -1;
765 h -= sh;
766 }
767 tile->slicecount = slicecount;
768 tile->sliceheight = state.sliceheight;
769 return tile;
770 }
771
772 #ifdef OBSCURED_OPT
773 struct obs {
774 int cured;
775 fz_irect b;
776 };
777
778 static void obs_fill_image (fz_device *dev, fz_image *image,
779 const fz_matrix *ctm, float alpha)
780 {
781 struct obs *obs = dev->user;
782
783 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
784 fz_irect b;
785 fz_rect rect = fz_unit_rect;
786
787 fz_transform_rect (&rect, ctm);
788 fz_round_rect (&b, &rect);
789 fz_intersect_irect (&b, &obs->b);
790 obs->cured = b.x0 == obs->b.x0
791 && b.x1 == obs->b.x1
792 && b.y0 == obs->b.y0
793 && b.y1 == obs->b.y1;
794 }
795 }
796
797 static int obscured (struct page *page, fz_irect bbox)
798 {
799 fz_rect rect;
800 fz_matrix ctm;
801 fz_device dev;
802 struct obs obs;
803
804 memset (&dev, 0, sizeof (dev));
805 memset (&obs, 0, sizeof (obs));
806 dev.hints = 0;
807 dev.flags = 0;
808 dev.user = &obs;
809 dev.ctx = state.ctx;
810 dev.fill_image = obs_fill_image;
811 obs.b = bbox;
812 fz_rect_from_irect (&rect, &bbox);
813 ctm = pagectm (page);
814 fz_run_display_list (page->dlist, &dev, &ctm, &rect, NULL);
815 return obs.cured;
816 }
817 #define OBSCURED obscured
818 #else
819 #define OBSCURED(a, b) 0
820 #endif
821
822 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
823 struct pbo *pbo)
824 {
825 fz_rect rect;
826 fz_irect bbox;
827 fz_matrix ctm;
828 fz_device *dev;
829 struct tile *tile;
830 struct pagedim *pdim;
831
832 tile = alloctile (h);
833 pdim = &state.pagedims[page->pdimno];
834
835 bbox = pdim->bounds;
836 bbox.x0 += x;
837 bbox.y0 += y;
838 bbox.x1 = bbox.x0 + w;
839 bbox.y1 = bbox.y0 + h;
840
841 if (state.pig) {
842 if (state.pig->w == w
843 && state.pig->h == h
844 && state.pig->colorspace == state.colorspace) {
845 tile->pixmap = state.pig;
846 tile->pixmap->x = bbox.x0;
847 tile->pixmap->y = bbox.y0;
848 }
849 else {
850 fz_drop_pixmap (state.ctx, state.pig);
851 }
852 state.pig = NULL;
853 }
854 if (!tile->pixmap) {
855 if (pbo) {
856 tile->pixmap =
857 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
858 &bbox, pbo->ptr);
859 tile->pbo = pbo;
860 }
861 else {
862 tile->pixmap =
863 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox);
864 }
865 }
866
867 tile->w = w;
868 tile->h = h;
869 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
870 clearpixmap (tile->pixmap);
871 }
872 dev = fz_new_draw_device (state.ctx, tile->pixmap);
873 ctm = pagectm (page);
874 fz_rect_from_irect (&rect, &bbox);
875 fz_run_display_list (page->dlist, dev, &ctm, &rect, NULL);
876 fz_free_device (dev);
877
878 return tile;
879 }
880
881 static void initpdims (void)
882 {
883 double start, end;
884 int pageno, trim, show;
885 FILE *trimf = NULL;
886 int trimw = 0;
887
888 start = now ();
889
890 if (state.trimmargins && state.trimcachepath) {
891 trimf = fopen (state.trimcachepath, "rb");
892 if (!trimf) {
893 trimf = fopen (state.trimcachepath, "wb");
894 trimw = 1;
895 }
896 }
897 for (pageno = 0; pageno < state.pagecount; ++pageno) {
898 int rotate = 0;
899 struct pagedim *p;
900 fz_rect mediabox;
901
902 switch (state.type) {
903 case DPDF: {
904 pdf_obj *pageobj = state.u.pdf->page_objs[pageno];
905
906 if (state.trimmargins) {
907 pdf_obj *obj;
908 pdf_page *page;
909
910 fz_try (state.ctx) {
911 page = pdf_load_page (state.u.pdf, pageno);
912 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
913 trim = state.trimanew || !obj;
914 if (trim) {
915 fz_rect rect;
916 fz_matrix ctm;
917 fz_device *dev;
918
919 dev = fz_new_bbox_device (state.ctx, &rect);
920 dev->hints |= FZ_IGNORE_SHADE;
921 fz_invert_matrix (&ctm, &page->ctm);
922 pdf_run_page (state.u.pdf, page, dev, &fz_identity, NULL);
923 fz_free_device (dev);
924
925 rect.x0 += state.trimfuzz.x0;
926 rect.x1 += state.trimfuzz.x1;
927 rect.y0 += state.trimfuzz.y0;
928 rect.y1 += state.trimfuzz.y1;
929 fz_transform_rect (&rect, &ctm);
930 fz_intersect_rect (&rect, &page->mediabox);
931
932 if (fz_is_empty_rect (&rect)) {
933 mediabox = page->mediabox;
934 }
935 else {
936 mediabox = rect;
937 }
938
939 obj = pdf_new_array (state.ctx, 4);
940 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x0));
941 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y0));
942 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x1));
943 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y1));
944 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
945 }
946 else {
947 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
948 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
949 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
950 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
951 }
952
953 rotate = page->rotate;
954 pdf_free_page (state.u.pdf, page);
955
956 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
957 if (show) {
958 printd ("progress %f Trimming %d",
959 (double) (pageno + 1) / state.pagecount,
960 pageno + 1);
961 }
962 }
963 fz_catch (state.ctx) {
964 fprintf (stderr, "failed to load page %d\n", pageno+1);
965 }
966 }
967 else {
968 fz_rect cropbox;
969
970 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "MediaBox"),
971 &mediabox);
972 if (fz_is_empty_rect (&mediabox)) {
973 fprintf (stderr, "cannot find page size for page %d\n",
974 pageno+1);
975 mediabox.x0 = 0;
976 mediabox.y0 = 0;
977 mediabox.x1 = 612;
978 mediabox.y1 = 792;
979 }
980
981 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "CropBox"),
982 &cropbox);
983 if (!fz_is_empty_rect (&cropbox)) {
984 fz_intersect_rect (&mediabox, &cropbox);
985 }
986 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
987 }
988 break;
989 }
990
991 case DXPS:
992 {
993 xps_page *page;
994
995 fz_try (state.ctx) {
996 page = xps_load_page (state.u.xps, pageno);
997 xps_bound_page (state.u.xps, page, &mediabox);
998 rotate = 0;
999 if (state.trimmargins) {
1000 fz_rect rect;
1001 fz_device *dev;
1002
1003 dev = fz_new_bbox_device (state.ctx, &rect);
1004 dev->hints |= FZ_IGNORE_SHADE;
1005 xps_run_page (state.u.xps, page, dev,
1006 &fz_identity, NULL);
1007 fz_free_device (dev);
1008
1009 rect.x0 += state.trimfuzz.x0;
1010 rect.x1 += state.trimfuzz.x1;
1011 rect.y0 += state.trimfuzz.y0;
1012 rect.y1 += state.trimfuzz.y1;
1013 fz_intersect_rect (&rect, &mediabox);
1014
1015 if (!fz_is_empty_rect (&rect)) {
1016 mediabox = rect;
1017 }
1018 }
1019 xps_free_page (state.u.xps, page);
1020 printd ("progress %f loading %d",
1021 (double) (pageno + 1) / state.pagecount,
1022 pageno + 1);
1023 }
1024 fz_catch (state.ctx) {
1025 }
1026 }
1027 break;
1028
1029 case DCBZ:
1030 {
1031 rotate = 0;
1032 if (state.trimmargins && trimw) {
1033 cbz_page *page;
1034
1035 fz_try (state.ctx) {
1036 page = cbz_load_page (state.u.cbz, pageno);
1037 cbz_bound_page (state.u.cbz, page, &mediabox);
1038 cbz_free_page (state.u.cbz, page);
1039 printd ("progress %f Trimming %d",
1040 (double) (pageno + 1) / state.pagecount,
1041 pageno + 1);
1042 }
1043 fz_catch (state.ctx) {
1044 fprintf (stderr, "failed to load page %d\n", pageno+1);
1045 mediabox.x0 = 0;
1046 mediabox.y0 = 0;
1047 mediabox.x1 = 900;
1048 mediabox.y1 = 900;
1049 }
1050 if (trimf) {
1051 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1052 if (n - 1) {
1053 err (1, "fwrite trim mediabox");
1054 }
1055 }
1056 }
1057 else {
1058 if (trimf) {
1059 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1060 if (n - 1) {
1061 err (1, "fread trim mediabox");
1062 }
1063 }
1064 else {
1065 mediabox.x0 = mediabox.y0 = 0;
1066 mediabox.x1 = 900;
1067 mediabox.y1 = 900;
1068 }
1069 }
1070 }
1071 break;
1072
1073 default:
1074 ARSERT (0 && state.type);
1075 }
1076
1077 if (state.pagedimcount == 0
1078 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1079 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1080 size_t size;
1081
1082 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1083 state.pagedims = realloc (state.pagedims, size);
1084 if (!state.pagedims) {
1085 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1086 size, state.pagedimcount + 1);
1087 }
1088
1089 p = &state.pagedims[state.pagedimcount++];
1090 p->rotate = rotate;
1091 p->mediabox = mediabox;
1092 p->pageno = pageno;
1093 }
1094 }
1095 end = now ();
1096 if (state.trimmargins) {
1097 printd ("progress 1 Trimmed %d pages in %f seconds",
1098 state.pagecount, end - start);
1099 }
1100 else {
1101 printd ("vmsg Processed %d pages in %f seconds",
1102 state.pagecount, end - start);
1103 }
1104 state.trimanew = 0;
1105 if (trimf) {
1106 if (fclose (trimf)) {
1107 err (1, "fclose");
1108 }
1109 }
1110 }
1111
1112 static void layout (void)
1113 {
1114 int pindex;
1115 fz_rect box;
1116 fz_matrix ctm, rm;
1117 struct pagedim *p = p;
1118 double zw, w, maxw = 0.0;
1119
1120 if (state.pagedimcount == 0) return;
1121
1122 switch (state.fitmodel) {
1123 case FitProportional:
1124 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1125 double x0, x1;
1126
1127 p = &state.pagedims[pindex];
1128 fz_rotate (&rm, p->rotate + state.rotate);
1129 box = p->mediabox;
1130 fz_transform_rect (&box, &rm);
1131
1132 x0 = MIN (box.x0, box.x1);
1133 x1 = MAX (box.x0, box.x1);
1134
1135 w = x1 - x0;
1136 maxw = MAX (w, maxw);
1137 }
1138 break;
1139
1140 case FitPage:
1141 maxw = state.w;
1142 break;
1143
1144 case FitWidth:
1145 break;
1146
1147 default:
1148 ARSERT (0 && state.fitmodel);
1149 }
1150
1151 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1152 fz_rect rect;
1153 fz_matrix tm, sm;
1154 double zoom = zoom;
1155
1156 p = &state.pagedims[pindex];
1157 fz_rotate (&ctm, state.rotate);
1158 fz_rotate (&rm, p->rotate + state.rotate);
1159 box = p->mediabox;
1160 fz_transform_rect (&box, &rm);
1161 w = box.x1 - box.x0;
1162 switch (state.fitmodel) {
1163 case FitProportional:
1164 zw = state.w / w;
1165 zoom = zw * (w / maxw);
1166 p->left = ((maxw - w) * zoom) / 2.0;
1167 break;
1168 case FitPage:
1169 {
1170 double zh, h;
1171 zw = maxw / w;
1172 h = box.y1 - box.y0;
1173 zh = state.h / h;
1174 zoom = MIN (zw, zh);
1175 p->left = (maxw - (w * zoom)) / 2.0;
1176 }
1177 break;
1178 case FitWidth:
1179 p->left = 0;
1180 zoom = state.w / w;
1181 break;
1182 }
1183
1184 fz_scale (&p->zoomctm, zoom, zoom);
1185 fz_concat (&ctm, &p->zoomctm, &ctm);
1186
1187 fz_rotate (&rm, p->rotate);
1188 p->pagebox = p->mediabox;
1189 fz_transform_rect (&p->pagebox, &rm);
1190 p->pagebox.x1 -= p->pagebox.x0;
1191 p->pagebox.y1 -= p->pagebox.y0;
1192 p->pagebox.x0 = 0;
1193 p->pagebox.y0 = 0;
1194 rect = p->pagebox;
1195 fz_transform_rect (&rect, &ctm);
1196 fz_round_rect (&p->bounds, &rect);
1197 p->ctm = ctm;
1198
1199 fz_translate (&tm, 0, -p->mediabox.y1);
1200 fz_scale (&sm, zoom, -zoom);
1201 fz_concat (&ctm, &tm, &sm);
1202 fz_concat (&p->lctm, &ctm, &rm);
1203
1204 p->tctmready = 0;
1205 }
1206
1207 do {
1208 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1209 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1210 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1211 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1212 int w = x1 - x0;
1213 int h = y1 - y0;
1214
1215 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1216 } while (p-- != state.pagedims);
1217 }
1218
1219 static
1220 struct anchor { int n; int x; int y; int w; int h; }
1221 desttoanchor (fz_link_dest *dest)
1222 {
1223 int i;
1224 struct anchor a;
1225 struct pagedim *pdim = state.pagedims;
1226
1227 a.n = -1;
1228 a.x = 0;
1229 a.y = 0;
1230 for (i = 0; i < state.pagedimcount; ++i) {
1231 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1232 break;
1233 pdim = &state.pagedims[i];
1234 }
1235 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1236 fz_point p;
1237 if (dest->ld.gotor.flags & fz_link_flag_l_valid)
1238 p.x = dest->ld.gotor.lt.x;
1239 p.y = dest->ld.gotor.lt.y;
1240 fz_transform_point (&p, &pdim->lctm);
1241 a.y = p.y;
1242 a.x = p.x;
1243 }
1244 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1245 double x0, x1, y0, y1;
1246
1247 x0 = MIN (pdim->bounds.x0, pdim->bounds.x1);
1248 x1 = MAX (pdim->bounds.x0, pdim->bounds.x1);
1249 a.w = x1 - x0;
1250 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1251 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1252 a.h = y1 - y0;
1253 a.n = dest->ld.gotor.page;
1254 }
1255 return a;
1256 }
1257
1258 static void recurse_outline (fz_outline *outline, int level)
1259 {
1260 while (outline) {
1261 struct anchor a = desttoanchor (&outline->dest);
1262
1263 if (a.n >= 0) {
1264 printd ("o %d %d %d %d %s",
1265 level, a.n, a.y, a.h, outline->title);
1266 }
1267 if (outline->down) {
1268 recurse_outline (outline->down, level + 1);
1269 }
1270 outline = outline->next;
1271 }
1272 }
1273
1274 static void process_outline (void)
1275 {
1276 fz_outline *outline;
1277
1278 if (!state.needoutline) return;
1279
1280 state.needoutline = 0;
1281 switch (state.type) {
1282 case DPDF:
1283 outline = pdf_load_outline (state.u.pdf);
1284 break;
1285 case DXPS:
1286 outline = xps_load_outline (state.u.xps);
1287 break;
1288 default:
1289 outline = NULL;
1290 break;
1291 }
1292 if (outline) {
1293 recurse_outline (outline, 0);
1294 fz_free_outline (state.ctx, outline);
1295 }
1296 }
1297
1298 static char *strofspan (fz_text_span *span)
1299 {
1300 char *p;
1301 char utf8[10];
1302 fz_text_char *ch;
1303 size_t size = 0, cap = 80;
1304
1305 p = malloc (cap + 1);
1306 if (!p) return NULL;
1307
1308 for (ch = span->text; ch < span->text + span->len; ++ch) {
1309 int n = fz_runetochar (utf8, ch->c);
1310 if (size + n > cap) {
1311 cap *= 2;
1312 p = realloc (p, cap + 1);
1313 if (!p) return NULL;
1314 }
1315
1316 memcpy (p + size, utf8, n);
1317 size += n;
1318 }
1319 p[size] = 0;
1320 return p;
1321 }
1322
1323 static int matchspan (regex_t *re, fz_text_page *page,
1324 fz_text_span *span, fz_matrix ctm,
1325 int stop, int pageno, double start)
1326 {
1327 int ret;
1328 char *p;
1329 regmatch_t rm;
1330 int a, b, c;
1331 fz_rect sb, eb;
1332 fz_point p1, p2, p3, p4;
1333
1334 p = strofspan (span);
1335 if (!p) return -1;
1336
1337 ret = regexec (re, p, 1, &rm, 0);
1338 if (ret) {
1339 free (p);
1340 if (ret != REG_NOMATCH) {
1341 size_t size;
1342 char errbuf[80];
1343 size = regerror (ret, re, errbuf, sizeof (errbuf));
1344 printd ("msg regexec error `%.*s'",
1345 (int) size, errbuf);
1346 return -1;
1347 }
1348 return 0;
1349 }
1350 else {
1351 int l = span->len;
1352
1353 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1354 c += fz_runelen (span->text[a].c);
1355 }
1356 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1357 c += fz_runelen (span->text[b].c);
1358 }
1359
1360 if (fz_runelen (span->text[b].c) > 1) {
1361 b = MAX (0, b-1);
1362 }
1363
1364 fz_text_char_bbox (&sb, span, a);
1365 fz_text_char_bbox (&eb, span, b);
1366
1367 p1.x = sb.x0;
1368 p1.y = sb.y0;
1369 p2.x = eb.x1;
1370 p2.y = sb.y0;
1371 p3.x = eb.x1;
1372 p3.y = eb.y1;
1373 p4.x = sb.x0;
1374 p4.y = eb.y1;
1375
1376 if (!stop) {
1377 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1378 pageno, 1,
1379 p1.x, p1.y,
1380 p2.x, p2.y,
1381 p3.x, p3.y,
1382 p4.x, p4.y);
1383
1384 printd ("progress 1 found at %d `%.*s' in %f sec",
1385 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1386 now () - start);
1387 }
1388 else {
1389 printd ("match %d %d %f %f %f %f %f %f %f %f",
1390 pageno, 2,
1391 p1.x, p1.y,
1392 p2.x, p2.y,
1393 p3.x, p3.y,
1394 p4.x, p4.y);
1395 }
1396 free (p);
1397 return 1;
1398 }
1399 }
1400
1401 static int compareblocks (const void *l, const void *r)
1402 {
1403 fz_text_block const *ls = l;
1404 fz_text_block const* rs = r;
1405 return ls->bbox.y0 - rs->bbox.y0;
1406 }
1407
1408 /* wishful thinking function */
1409 static void search (regex_t *re, int pageno, int y, int forward)
1410 {
1411 int i, j;
1412 fz_matrix ctm;
1413 fz_device *tdev;
1414 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1415 fz_text_page *text;
1416 fz_text_sheet *sheet;
1417 struct pagedim *pdim, *pdimprev;
1418 int stop = 0, niters = 0;
1419 double start, end;
1420
1421 if (!(state.type == DPDF || state.type == DXPS))
1422 return;
1423
1424 start = now ();
1425 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1426 if (niters++ == 5) {
1427 niters = 0;
1428 if (hasdata ()) {
1429 printd ("progress 1 attention requested aborting search at %d",
1430 pageno);
1431 stop = 1;
1432 }
1433 else {
1434 printd ("progress %f searching in page %d",
1435 (double) (pageno + 1) / state.pagecount,
1436 pageno);
1437 }
1438 }
1439 pdimprev = NULL;
1440 for (i = 0; i < state.pagedimcount; ++i) {
1441 pdim = &state.pagedims[i];
1442 if (pdim->pageno == pageno) {
1443 goto found;
1444 }
1445 if (pdim->pageno > pageno) {
1446 pdim = pdimprev;
1447 goto found;
1448 }
1449 pdimprev = pdim;
1450 }
1451 pdim = pdimprev;
1452 found:
1453
1454 sheet = fz_new_text_sheet (state.ctx);
1455 text = fz_new_text_page (state.ctx, &fz_infinite_rect);
1456 tdev = fz_new_text_device (state.ctx, sheet, text);
1457
1458 switch (state.type) {
1459 case DPDF:
1460 u.ptr = NULL;
1461 fz_try (state.ctx) {
1462 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1463 trimctm (u.pdfpage, pdim - state.pagedims);
1464 fz_concat (&ctm, &pdim->tctm, &pdim->zoomctm);
1465 pdf_run_page (state.u.pdf, u.pdfpage, tdev, &ctm, NULL);
1466 }
1467 fz_catch (state.ctx) {
1468 fz_free_device (tdev);
1469 u.ptr = NULL;
1470 goto nextiter;
1471 }
1472 break;
1473
1474 case DXPS:
1475 u.xpspage = xps_load_page (state.u.xps, pageno);
1476 xps_run_page (state.u.xps, u.xpspage, tdev, &pdim->ctm, NULL);
1477 break;
1478
1479 default:
1480 ARSERT (0 && state.type);
1481 }
1482
1483 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1484 fz_free_device (tdev);
1485
1486 for (j = 0; j < text->len; ++j) {
1487 int k;
1488 fz_text_block *block;
1489
1490 block = &text->blocks[forward ? j : text->len - 1 - j];
1491
1492 for (k = 0; k < block->len; ++k) {
1493 int spannum;
1494 fz_text_line *line;
1495
1496 if (forward) {
1497 line = &block->lines[k];
1498 if (line->bbox.y0 < y + 1) continue;
1499 }
1500 else {
1501 line = &block->lines[block->len - 1 - k];
1502 if (line->bbox.y0 > y - 1) continue;
1503 }
1504
1505 for (spannum = 0; spannum < line->len; ++spannum) {
1506 fz_text_span *span = line->spans[spannum];
1507
1508 switch (matchspan (re, text, span, ctm,
1509 stop, pageno, start)) {
1510 case 0: break;
1511 case 1: stop = 1; break;
1512 case -1: stop = 1; goto endloop;
1513 }
1514 }
1515 }
1516 }
1517 nextiter:
1518 if (forward) {
1519 pageno += 1;
1520 y = 0;
1521 }
1522 else {
1523 pageno -= 1;
1524 y = INT_MAX;
1525 }
1526 endloop:
1527 fz_free_text_page (state.ctx, text);
1528 fz_free_text_sheet (state.ctx, sheet);
1529 if (u.ptr) {
1530 state.freepage (u.ptr);
1531 }
1532 }
1533 end = now ();
1534 if (!stop) {
1535 printd ("progress 1 no matches %f sec", end - start);
1536 }
1537 printd ("clearrects");
1538 }
1539
1540 static void set_tex_params (int colorspace)
1541 {
1542 union {
1543 unsigned char b;
1544 unsigned int s;
1545 } endianness = {1};
1546
1547 switch (colorspace) {
1548 case 0:
1549 state.texiform = GL_RGBA8;
1550 state.texform = GL_RGBA;
1551 state.texty = GL_UNSIGNED_BYTE;
1552 state.colorspace = fz_device_rgb;
1553 break;
1554 case 1:
1555 state.texiform = GL_RGBA8;
1556 state.texform = GL_BGRA;
1557 state.texty = endianness.s > 1
1558 ? GL_UNSIGNED_INT_8_8_8_8
1559 : GL_UNSIGNED_INT_8_8_8_8_REV;
1560 state.colorspace = fz_device_bgr;
1561 break;
1562 case 2:
1563 state.texiform = GL_LUMINANCE_ALPHA;
1564 state.texform = GL_LUMINANCE_ALPHA;
1565 state.texty = GL_UNSIGNED_BYTE;
1566 state.colorspace = fz_device_gray;
1567 break;
1568 default:
1569 errx (1, "invalid colorspce %d", colorspace);
1570 }
1571 }
1572
1573 static void realloctexts (int texcount)
1574 {
1575 size_t size;
1576
1577 if (texcount == state.texcount) return;
1578
1579 if (texcount < state.texcount) {
1580 glDeleteTextures (state.texcount - texcount,
1581 state.texids + texcount);
1582 }
1583
1584 size = texcount * sizeof (*state.texids);
1585 state.texids = realloc (state.texids, size);
1586 if (!state.texids) {
1587 err (1, "realloc texids %" FMT_s, size);
1588 }
1589
1590 size = texcount * sizeof (*state.texowners);
1591 state.texowners = realloc (state.texowners, size);
1592 if (!state.texowners) {
1593 err (1, "realloc texowners %" FMT_s, size);
1594 }
1595 if (texcount > state.texcount) {
1596 int i;
1597
1598 glGenTextures (texcount - state.texcount,
1599 state.texids + state.texcount);
1600 for (i = state.texcount; i < texcount; ++i) {
1601 state.texowners[i].w = -1;
1602 state.texowners[i].slice = NULL;
1603 }
1604 }
1605 state.texcount = texcount;
1606 state.texindex = 0;
1607 }
1608
1609 static char *mbtoutf8 (char *s)
1610 {
1611 char *p, *r;
1612 wchar_t *tmp;
1613 size_t i, ret, len;
1614
1615 len = mbstowcs (NULL, s, strlen (s));
1616 if (len == 0) {
1617 return s;
1618 }
1619 else {
1620 if (len == (size_t) -1) {
1621 return s;
1622 }
1623 }
1624
1625 tmp = malloc (len * sizeof (wchar_t));
1626 if (!tmp) {
1627 return s;
1628 }
1629
1630 ret = mbstowcs (tmp, s, len);
1631 if (ret == (size_t) -1) {
1632 free (tmp);
1633 return s;
1634 }
1635
1636 len = 0;
1637 for (i = 0; i < ret; ++i) {
1638 len += fz_runelen (tmp[i]);
1639 }
1640
1641 p = r = malloc (len + 1);
1642 if (!r) {
1643 free (tmp);
1644 return s;
1645 }
1646
1647 for (i = 0; i < ret; ++i) {
1648 p += fz_runetochar (p, tmp[i]);
1649 }
1650 *p = 0;
1651 free (tmp);
1652 return r;
1653 }
1654
1655 CAMLprim value ml_mbtoutf8 (value s_v)
1656 {
1657 CAMLparam1 (s_v);
1658 CAMLlocal1 (ret_v);
1659 char *s, *r;
1660
1661 s = String_val (s_v);
1662 r = mbtoutf8 (s);
1663 if (r == s) {
1664 ret_v = s_v;
1665 }
1666 else {
1667 ret_v = caml_copy_string (r);
1668 free (r);
1669 }
1670 CAMLreturn (ret_v);
1671 }
1672
1673 static void * mainloop (void *unused)
1674 {
1675 char *p = NULL;
1676 int len, ret, oldlen = 0;
1677
1678 for (;;) {
1679 len = readlen ();
1680 if (len == 0) {
1681 errx (1, "readlen returned 0");
1682 }
1683
1684 if (oldlen < len + 1) {
1685 p = realloc (p, len + 1);
1686 if (!p) {
1687 err (1, "realloc %d failed", len + 1);
1688 }
1689 oldlen = len + 1;
1690 }
1691 readdata (p, len);
1692 p[len] = 0;
1693
1694 if (!strncmp ("open", p, 4)) {
1695 size_t filenamelen;
1696 int wthack, off;
1697 char *password;
1698 char *filename;
1699 char *utf8filename;
1700
1701 ret = sscanf (p + 5, " %d %n", &wthack, &off);
1702 if (ret != 1) {
1703 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1704 }
1705
1706 filename = p + 5 + off;
1707 filenamelen = strlen (filename);
1708 password = filename + filenamelen + 1;
1709
1710 lock ("open");
1711 openxref (filename, password);
1712 pdfinfo ();
1713 initpdims ();
1714 unlock ("open");
1715
1716 if (!wthack) {
1717 utf8filename = mbtoutf8 (filename);
1718 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1719 if (utf8filename != filename) {
1720 free (utf8filename);
1721 }
1722 }
1723 state.needoutline = 1;
1724 }
1725 else if (!strncmp ("cs", p, 2)) {
1726 int i, colorspace;
1727
1728 ret = sscanf (p + 2, " %d", &colorspace);
1729 if (ret != 1) {
1730 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1731 }
1732 lock ("cs");
1733 set_tex_params (colorspace);
1734 for (i = 0; i < state.texcount; ++i) {
1735 state.texowners[i].w = -1;
1736 state.texowners[i].slice = NULL;
1737 }
1738 unlock ("cs");
1739 }
1740 else if (!strncmp ("freepage", p, 8)) {
1741 void *ptr;
1742
1743 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1744 if (ret != 1) {
1745 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1746 }
1747 freepage (ptr);
1748 }
1749 else if (!strncmp ("freetile", p, 8)) {
1750 void *ptr;
1751
1752 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1753 if (ret != 1) {
1754 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1755 }
1756 freetile (ptr);
1757 }
1758 else if (!strncmp ("search", p, 6)) {
1759 int icase, pageno, y, ret, len2, forward;
1760 char *pattern;
1761 regex_t re;
1762
1763 ret = sscanf (p + 6, " %d %d %d %d,%n",
1764 &icase, &pageno, &y, &forward, &len2);
1765 if (ret != 4) {
1766 errx (1, "malformed search `%s' ret=%d", p, ret);
1767 }
1768
1769 pattern = p + 6 + len2;
1770 ret = regcomp (&re, pattern,
1771 REG_EXTENDED | (icase ? REG_ICASE : 0));
1772 if (ret) {
1773 char errbuf[80];
1774 size_t size;
1775
1776 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1777 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1778 }
1779 else {
1780 search (&re, pageno, y, forward);
1781 regfree (&re);
1782 }
1783 }
1784 else if (!strncmp ("geometry", p, 8)) {
1785 int w, h, fitmodel;
1786
1787 printd ("clear");
1788 ret = sscanf (p + 8, " %d %d %d", &w, &h, &fitmodel);
1789 if (ret != 3) {
1790 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1791 }
1792
1793 lock ("geometry");
1794 state.h = h;
1795 if (w != state.w) {
1796 int i;
1797 state.w = w;
1798 for (i = 0; i < state.texcount; ++i) {
1799 state.texowners[i].slice = NULL;
1800 }
1801 }
1802 state.fitmodel = fitmodel;
1803 layout ();
1804 process_outline ();
1805
1806 state.gen++;
1807 unlock ("geometry");
1808 printd ("continue %d", state.pagecount);
1809 }
1810 else if (!strncmp ("reqlayout", p, 9)) {
1811 char *nameddest;
1812 int rotate, fitmodel, off;
1813
1814 printd ("clear");
1815 ret = sscanf (p + 9, " %d %d %n", &rotate, &fitmodel, &off);
1816 if (ret != 2) {
1817 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1818 }
1819 lock ("reqlayout");
1820 if (state.rotate != rotate || state.fitmodel != fitmodel) {
1821 state.gen += 1;
1822 }
1823 state.rotate = rotate;
1824 state.fitmodel = fitmodel;
1825 layout ();
1826 process_outline ();
1827
1828 nameddest = p + 9 + off;
1829 if (state.type == DPDF && nameddest && *nameddest) {
1830 struct anchor a;
1831 fz_link_dest dest;
1832 pdf_obj *needle, *obj;
1833
1834 needle = pdf_new_string (state.ctx, nameddest,
1835 strlen (nameddest));
1836 obj = pdf_lookup_dest (state.u.pdf, needle);
1837 if (obj) {
1838 dest = pdf_parse_link_dest (state.u.pdf, obj);
1839
1840 a = desttoanchor (&dest);
1841 if (a.n >= 0) {
1842 printd ("a %d %d %d", a.n, a.x, a.y);
1843 }
1844 else {
1845 printd ("emsg failed to parse destination `%s'\n",
1846 nameddest);
1847 }
1848 }
1849 else {
1850 printd ("emsg destination `%s' not found\n",
1851 nameddest);
1852 }
1853 pdf_drop_obj (needle);
1854 }
1855
1856 state.gen++;
1857 unlock ("reqlayout");
1858 printd ("continue %d", state.pagecount);
1859 }
1860 else if (!strncmp ("page", p, 4)) {
1861 double a, b;
1862 struct page *page;
1863 int pageno, pindex, ret;
1864
1865 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1866 if (ret != 2) {
1867 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1868 }
1869
1870 lock ("page");
1871 a = now ();
1872 page = loadpage (pageno, pindex);
1873 b = now ();
1874 unlock ("page");
1875
1876 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1877 }
1878 else if (!strncmp ("tile", p, 4)) {
1879 int x, y, w, h, ret;
1880 struct page *page;
1881 struct tile *tile;
1882 double a, b;
1883 void *data;
1884
1885 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1886 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1887 if (ret != 6) {
1888 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1889 }
1890
1891 lock ("tile");
1892 a = now ();
1893 tile = rendertile (page, x, y, w, h, data);
1894 b = now ();
1895 unlock ("tile");
1896
1897 printd ("tile %d %d %" FMT_ptr " %u %f",
1898 x, y,
1899 FMT_ptr_cast2 (tile),
1900 tile->w * tile->h * tile->pixmap->n,
1901 b - a);
1902 }
1903 else if (!strncmp ("settrim", p, 7)) {
1904 fz_irect fuzz;
1905 int trimmargins;
1906
1907 ret = sscanf (p + 7, " %d %d %d %d %d",
1908 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1909 if (ret != 5) {
1910 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1911 }
1912 printd ("clear");
1913 lock ("settrim");
1914 state.trimmargins = trimmargins;
1915 state.needoutline = 1;
1916 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1917 state.trimanew = 1;
1918 state.trimfuzz = fuzz;
1919 }
1920 state.pagedimcount = 0;
1921 free (state.pagedims);
1922 state.pagedims = NULL;
1923 initpdims ();
1924 layout ();
1925 process_outline ();
1926 unlock ("settrim");
1927 printd ("continue %d", state.pagecount);
1928 }
1929 else if (!strncmp ("sliceh", p, 6)) {
1930 int h;
1931
1932 ret = sscanf (p + 6, " %d", &h);
1933 if (ret != 1) {
1934 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1935 }
1936 if (h != state.sliceheight) {
1937 int i;
1938
1939 state.sliceheight = h;
1940 for (i = 0; i < state.texcount; ++i) {
1941 state.texowners[i].w = -1;
1942 state.texowners[i].h = -1;
1943 state.texowners[i].slice = NULL;
1944 }
1945 }
1946 }
1947 else if (!strncmp ("interrupt", p, 9)) {
1948 printd ("vmsg interrupted");
1949 }
1950 else {
1951 errx (1, "unknown command %.*s", len, p);
1952 }
1953 }
1954 return 0;
1955 }
1956
1957 CAMLprim value ml_realloctexts (value texcount_v)
1958 {
1959 CAMLparam1 (texcount_v);
1960 int ok;
1961
1962 if (trylock ("ml_realloctexts")) {
1963 ok = 0;
1964 goto done;
1965 }
1966 realloctexts (Int_val (texcount_v));
1967 ok = 1;
1968 unlock ("ml_realloctexts");
1969
1970 done:
1971 CAMLreturn (Val_bool (ok));
1972 }
1973
1974 static void showsel (struct page *page, int ox, int oy)
1975 {
1976 int seen = 0;
1977 fz_irect bbox;
1978 fz_rect rect;
1979 fz_text_line *line;
1980 fz_text_block *block;
1981 struct mark first, last;
1982
1983 first = page->fmark;
1984 last = page->lmark;
1985
1986 if (!first.span || !last.span) return;
1987
1988 glEnable (GL_BLEND);
1989 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
1990 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
1991
1992 ox += state.pagedims[page->pdimno].bounds.x0;
1993 oy += state.pagedims[page->pdimno].bounds.y0;
1994 for (block = page->text->blocks;
1995 block < page->text->blocks + page->text->len;
1996 ++block) {
1997 for (line = block->lines;
1998 line < block->lines + block->len;
1999 ++line) {
2000 int spannum;
2001 rect = fz_empty_rect;
2002 for (spannum = 0; spannum < line->len; ++spannum) {
2003 int i, j, k;
2004 fz_text_span *span = line->spans[spannum];
2005
2006 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
2007
2008 j = 0;
2009 k = span->len - 1;
2010
2011 if (span == page->fmark.span && span == page->lmark.span) {
2012 seen = 1;
2013 j = MIN (first.i, last.i);
2014 k = MAX (first.i, last.i);
2015 }
2016 else if (span == first.span) {
2017 seen = 1;
2018 j = first.i;
2019 }
2020 else if (span == last.span) {
2021 seen = 1;
2022 k = last.i;
2023 }
2024
2025 if (seen) {
2026 for (i = j; i <= k; ++i) {
2027 fz_rect bbox;
2028 fz_union_rect (&rect,
2029 fz_text_char_bbox (&bbox, span, i));
2030 }
2031 fz_round_rect (&bbox, &rect);
2032 lprintf ("%d %d %d %d oy=%d ox=%d\n",
2033 bbox.x0,
2034 bbox.y0,
2035 bbox.x1,
2036 bbox.y1,
2037 oy, ox);
2038
2039 glRecti (bbox.x0 + ox, bbox.y0 + oy,
2040 bbox.x1 + ox, bbox.y1 + oy);
2041 if (span == last.span) {
2042 goto done;
2043 }
2044 }
2045 }
2046 }
2047 }
2048 done:
2049 glDisable (GL_BLEND);
2050 }
2051
2052 #include "glfont.c"
2053
2054 static void highlightlinks (struct page *page, int xoff, int yoff)
2055 {
2056 fz_matrix ctm, tm, pm;
2057 fz_link *link, *links;
2058
2059 switch (page->type) {
2060 case DPDF:
2061 links = page->u.pdfpage->links;
2062 break;
2063
2064 case DXPS:
2065 links = page->u.xpspage->links;
2066 break;
2067
2068 default:
2069 return;
2070 }
2071
2072 glEnable (GL_TEXTURE_1D);
2073 glEnable (GL_BLEND);
2074 glBindTexture (GL_TEXTURE_1D, state.stid);
2075
2076 xoff -= state.pagedims[page->pdimno].bounds.x0;
2077 yoff -= state.pagedims[page->pdimno].bounds.y0;
2078 fz_translate (&tm, xoff, yoff);
2079 pm = pagectm (page);
2080 fz_concat (&ctm, &pm, &tm);
2081
2082 glBegin (GL_LINES);
2083 for (link = links; link; link = link->next) {
2084 fz_point p1, p2, p3, p4;
2085
2086 p1.x = link->rect.x0;
2087 p1.y = link->rect.y0;
2088
2089 p2.x = link->rect.x1;
2090 p2.y = link->rect.y0;
2091
2092 p3.x = link->rect.x1;
2093 p3.y = link->rect.y1;
2094
2095 p4.x = link->rect.x0;
2096 p4.y = link->rect.y1;
2097
2098 fz_transform_point (&p1, &ctm);
2099 fz_transform_point (&p2, &ctm);
2100 fz_transform_point (&p3, &ctm);
2101 fz_transform_point (&p4, &ctm);
2102
2103 switch (link->dest.kind) {
2104 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2105 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2106 case FZ_LINK_LAUNCH: glColor3ub (0, 255, 0); break;
2107 default: glColor3ub (0, 0, 0); break;
2108 }
2109
2110 {
2111 float w, h, s, t;
2112
2113 w = p2.x - p1.x;
2114 h = p2.y - p1.y;
2115 t = sqrtf (w*w + h*h) * .25f;
2116
2117 w = p3.x - p2.x;
2118 h = p3.y - p2.y;
2119 s = sqrtf (w*w + h*h) * .25f;
2120
2121 glTexCoord1i (0);
2122 glVertex2f (p1.x, p1.y);
2123 glTexCoord1f (t);
2124 glVertex2f (p2.x, p2.y);
2125
2126 glTexCoord1i (0);
2127 glVertex2f (p2.x, p2.y);
2128 glTexCoord1f (s);
2129 glVertex2f (p3.x, p3.y);
2130
2131 glTexCoord1i (0);
2132 glVertex2f (p3.x, p3.y);
2133 glTexCoord1f (t);
2134 glVertex2f (p4.x, p4.y);
2135
2136 glTexCoord1i (0);
2137 glVertex2f (p4.x, p4.y);
2138 glTexCoord1f (s);
2139 glVertex2f (p1.x, p1.y);
2140 }
2141 }
2142 glEnd ();
2143
2144 glDisable (GL_BLEND);
2145 glDisable (GL_TEXTURE_1D);
2146 }
2147
2148 static int compareslinks (const void *l, const void *r)
2149 {
2150 struct slink const *ls = l;
2151 struct slink const *rs = r;
2152 if (ls->bbox.y0 == rs->bbox.y0) {
2153 return rs->bbox.x0 - rs->bbox.x0;
2154 }
2155 return ls->bbox.y0 - rs->bbox.y0;
2156 }
2157
2158 static void droptext (struct page *page)
2159 {
2160 if (page->text) {
2161 fz_free_text_page (state.ctx, page->text);
2162 page->fmark.i = -1;
2163 page->lmark.i = -1;
2164 page->fmark.span = NULL;
2165 page->lmark.span = NULL;
2166 page->text = NULL;
2167 }
2168 if (page->sheet) {
2169 fz_free_text_sheet (state.ctx, page->sheet);
2170 }
2171 }
2172
2173 static void dropslinks (struct page *page)
2174 {
2175 if (page->slinks) {
2176 free (page->slinks);
2177 page->slinks = NULL;
2178 page->slinkcount = 0;
2179 }
2180 }
2181
2182 static void ensureslinks (struct page *page)
2183 {
2184 fz_matrix ctm;
2185 int i, count = 0;
2186 size_t slinksize = sizeof (*page->slinks);
2187 fz_link *link, *links;
2188
2189 if (state.gen != page->sgen) {
2190 dropslinks (page);
2191 page->sgen = state.gen;
2192 }
2193 if (page->slinks) return;
2194
2195 switch (page->type) {
2196 case DPDF:
2197 links = page->u.pdfpage->links;
2198 trimctm (page->u.pdfpage, page->pdimno);
2199 fz_concat (&ctm,
2200 &state.pagedims[page->pdimno].tctm,
2201 &state.pagedims[page->pdimno].ctm);
2202 break;
2203
2204 case DXPS:
2205 links = page->u.xpspage->links;
2206 ctm = state.pagedims[page->pdimno].ctm;
2207 break;
2208
2209 default:
2210 return;
2211 }
2212
2213 for (link = links; link; link = link->next) {
2214 count++;
2215 }
2216 if (count > 0) {
2217 page->slinkcount = count;
2218 page->slinks = calloc (count, slinksize);
2219 if (!page->slinks) {
2220 err (1, "realloc slinks %d", count);
2221 }
2222
2223 for (i = 0, link = links; link; ++i, link = link->next) {
2224 fz_rect rect;
2225
2226 rect = link->rect;
2227 fz_transform_rect (&rect, &ctm);
2228 page->slinks[i].link = link;
2229 fz_round_rect (&page->slinks[i].bbox, &rect);
2230 }
2231 qsort (page->slinks, count, slinksize, compareslinks);
2232 }
2233 }
2234
2235 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2236 static void fmt_linkn (char *s, unsigned int u)
2237 {
2238 unsigned int len; unsigned int q;
2239 int zma = 'z' - 'a' + 1;
2240 len = 1; q = u;
2241 while (q > zma - 1) { ++len; q /= zma; }
2242 if (s) {
2243 s += len;
2244 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2245 /* handles u == 0 */
2246 }
2247 s[len] = 0;
2248 }
2249
2250 static void highlightslinks (struct page *page, int xoff, int yoff,
2251 int noff, char *targ, int tlen, int hfsize)
2252 {
2253 int i;
2254 char buf[40];
2255 struct slink *slink;
2256 double x0, y0, x1, y1, w;
2257
2258 ensureslinks (page);
2259 glColor3ub (0xc3, 0xb0, 0x91);
2260 for (i = 0; i < page->slinkcount; ++i) {
2261 fmt_linkn (buf, i + noff);
2262 if (!tlen || !strncmp (targ, buf, tlen)) {
2263 slink = &page->slinks[i];
2264
2265 x0 = slink->bbox.x0 + xoff - 5;
2266 y1 = slink->bbox.y0 + yoff - 5;
2267 y0 = y1 + 10 + hfsize;
2268 w = measure_string (state.face, hfsize, buf);
2269 x1 = x0 + w + 10;
2270 glRectd (x0, y0, x1, y1);
2271 }
2272 }
2273
2274 glEnable (GL_BLEND);
2275 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2276 glEnable (GL_TEXTURE_2D);
2277 glColor3ub (0, 0, 0);
2278 for (i = 0; i < page->slinkcount; ++i) {
2279 fmt_linkn (buf, i + noff);
2280 if (!tlen || !strncmp (targ, buf, tlen)) {
2281 slink = &page->slinks[i];
2282
2283 x0 = slink->bbox.x0 + xoff;
2284 y0 = slink->bbox.y0 + yoff + hfsize;
2285 draw_string (state.face, hfsize, x0, y0, buf);
2286 }
2287 }
2288 glDisable (GL_TEXTURE_2D);
2289 glDisable (GL_BLEND);
2290 }
2291
2292
2293 static void uploadslice (struct tile *tile, struct slice *slice)
2294 {
2295 int offset;
2296 struct slice *slice1;
2297 unsigned char *texdata;
2298
2299 offset = 0;
2300 for (slice1 = tile->slices; slice != slice1; slice1++) {
2301 offset += slice1->h * tile->w * tile->pixmap->n;
2302 }
2303 if (slice->texindex != -1 && slice->texindex < state.texcount
2304 && state.texowners[slice->texindex].slice == slice) {
2305 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2306 }
2307 else {
2308 int subimage = 0;
2309 int texindex = state.texindex++ % state.texcount;
2310
2311 if (state.texowners[texindex].w == tile->w) {
2312 if (state.texowners[texindex].h >= slice->h) {
2313 subimage = 1;
2314 }
2315 else {
2316 state.texowners[texindex].h = slice->h;
2317 }
2318 }
2319 else {
2320 state.texowners[texindex].h = slice->h;
2321 }
2322
2323 state.texowners[texindex].w = tile->w;
2324 state.texowners[texindex].slice = slice;
2325 slice->texindex = texindex;
2326
2327 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2328 if (tile->pbo) {
2329 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2330 texdata = 0;
2331 }
2332 else {
2333 texdata = tile->pixmap->samples;
2334 }
2335 if (subimage) {
2336 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2337 0,
2338 0,
2339 0,
2340 tile->w,
2341 slice->h,
2342 state.texform,
2343 state.texty,
2344 texdata+offset
2345 );
2346 }
2347 else {
2348 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2349 0,
2350 state.texiform,
2351 tile->w,
2352 slice->h,
2353 0,
2354 state.texform,
2355 state.texty,
2356 texdata+offset
2357 );
2358 }
2359 if (tile->pbo) {
2360 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2361 }
2362 }
2363 }
2364
2365 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2366 {
2367 CAMLparam2 (args_v, ptr_v);
2368 int dispx = Int_val (Field (args_v, 0));
2369 int dispy = Int_val (Field (args_v, 1));
2370 int dispw = Int_val (Field (args_v, 2));
2371 int disph = Int_val (Field (args_v, 3));
2372 int tilex = Int_val (Field (args_v, 4));
2373 int tiley = Int_val (Field (args_v, 5));
2374 char *s = String_val (ptr_v);
2375 struct tile *tile = parse_pointer ("ml_drawtile", s);
2376
2377 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2378 {
2379 int slicey, firstslice;
2380 struct slice *slice;
2381
2382 firstslice = tiley / tile->sliceheight;
2383 slice = &tile->slices[firstslice];
2384 slicey = tiley % tile->sliceheight;
2385
2386 while (disph > 0) {
2387 int dh;
2388
2389 dh = slice->h - slicey;
2390 dh = MIN (disph, dh);
2391 uploadslice (tile, slice);
2392
2393 glBegin (GL_QUADS);
2394 {
2395 glTexCoord2i (tilex, slicey);
2396 glVertex2i (dispx, dispy);
2397
2398 glTexCoord2i (tilex+dispw, slicey);
2399 glVertex2i (dispx+dispw, dispy);
2400
2401 glTexCoord2i (tilex+dispw, slicey+dh);
2402 glVertex2i (dispx+dispw, dispy+dh);
2403
2404 glTexCoord2i (tilex, slicey+dh);
2405 glVertex2i (dispx, dispy+dh);
2406 }
2407 glEnd ();
2408
2409 dispy += dh;
2410 disph -= dh;
2411 slice++;
2412 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2413 slicey = 0;
2414 }
2415 }
2416 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2417 CAMLreturn (Val_unit);
2418 }
2419
2420 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2421 value xoff_v, value yoff_v,
2422 value li_v)
2423 {
2424 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2425 int xoff = Int_val (xoff_v);
2426 int yoff = Int_val (yoff_v);
2427 int noff = Int_val (Field (li_v, 0));
2428 char *targ = String_val (Field (li_v, 1));
2429 int tlen = caml_string_length (Field (li_v, 1));
2430 int hfsize = Int_val (Field (li_v, 2));
2431 char *s = String_val (ptr_v);
2432 int hlmask = Int_val (hlinks_v);
2433 struct page *page = parse_pointer ("ml_postprocess", s);
2434
2435 if (!page->u.ptr) {
2436 /* deal with loadpage failed pages */
2437 goto done;
2438 }
2439
2440 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2441 if (trylock ("ml_postprocess")) {
2442 noff = 0;
2443 goto done;
2444 }
2445 if (hlmask & 2) {
2446 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2447 noff = page->slinkcount;
2448 }
2449 showsel (page, xoff, yoff);
2450 unlock ("ml_postprocess");
2451
2452 done:
2453 CAMLreturn (Val_int (noff));
2454 }
2455
2456 static fz_link *getlink (struct page *page, int x, int y)
2457 {
2458 fz_point p;
2459 fz_matrix ctm;
2460 const fz_matrix *tctm;
2461 fz_link *link, *links;
2462
2463 switch (page->type) {
2464 case DPDF:
2465 trimctm (page->u.pdfpage, page->pdimno);
2466 tctm = &state.pagedims[page->pdimno].tctm;
2467 links = page->u.pdfpage->links;
2468 break;
2469
2470 case DXPS:
2471 tctm = &fz_identity;
2472 links = page->u.xpspage->links;
2473 break;
2474
2475 default:
2476 return NULL;
2477 }
2478 p.x = x;
2479 p.y = y;
2480
2481 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2482 fz_invert_matrix (&ctm, &ctm);
2483 fz_transform_point (&p, &ctm);
2484
2485 for (link = links; link; link = link->next) {
2486 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2487 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2488 return link;
2489 }
2490 }
2491 }
2492 return NULL;
2493 }
2494
2495 static void ensuretext (struct page *page)
2496 {
2497 if (state.gen != page->tgen) {
2498 droptext (page);
2499 page->tgen = state.gen;
2500 }
2501 if (!page->text) {
2502 fz_matrix ctm;
2503 fz_device *tdev;
2504
2505 page->text = fz_new_text_page (state.ctx, &fz_infinite_rect);
2506 page->sheet = fz_new_text_sheet (state.ctx);
2507 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2508 ctm = pagectm (page);
2509 fz_run_display_list (page->dlist, tdev, &ctm, &fz_infinite_rect, NULL);
2510 qsort (page->text->blocks, page->text->len,
2511 sizeof (*page->text->blocks), compareblocks);
2512 fz_free_device (tdev);
2513 }
2514 }
2515
2516 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2517 {
2518 CAMLparam2 (start_page_v, dir_v);
2519 CAMLlocal1 (ret_v);
2520 int i, dir = Int_val (dir_v);
2521 int start_page = Int_val (start_page_v);
2522 int end_page = dir > 0 ? state.pagecount : -1;
2523
2524 ret_v = Val_int (0);
2525 if (!(state.type == DPDF || state.type == DXPS)) {
2526 goto done;
2527 }
2528
2529 lock ("ml_findpage_with_links");
2530 for (i = start_page + dir; i != end_page; i += dir) {
2531 int found;
2532
2533 switch (state.type) {
2534 case DPDF:
2535 {
2536 pdf_page *page = NULL;
2537
2538 fz_try (state.ctx) {
2539 page = pdf_load_page (state.u.pdf, i);
2540 found = !!page->links;
2541 }
2542 fz_catch (state.ctx) {
2543 found = 0;
2544 }
2545 if (page) {
2546 freepdfpage (page);
2547 }
2548 }
2549 break;
2550 case DXPS:
2551 {
2552 xps_page *page = xps_load_page (state.u.xps, i);
2553 found = !!page->links;
2554 freexpspage (page);
2555 }
2556 break;
2557
2558 default:
2559 ARSERT ("invalid document type");
2560 }
2561
2562 if (found) {
2563 ret_v = caml_alloc_small (1, 1);
2564 Field (ret_v, 0) = Val_int (i);
2565 goto unlock;
2566 }
2567 }
2568 unlock:
2569 unlock ("ml_findpage_with_links");
2570
2571 done:
2572 CAMLreturn (ret_v);
2573 }
2574
2575 enum { dir_first, dir_last};
2576 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2577
2578 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2579 {
2580 CAMLparam2 (ptr_v, dir_v);
2581 CAMLlocal2 (ret_v, pos_v);
2582 struct page *page;
2583 int dirtag, i, slinkindex;
2584 struct slink *found = NULL ,*slink;
2585 char *s = String_val (ptr_v);
2586
2587 page = parse_pointer ("ml_findlink", s);
2588 ret_v = Val_int (0);
2589 if (trylock ("ml_findlink")) {
2590 goto done;
2591 }
2592
2593 ensureslinks (page);
2594
2595 if (Is_block (dir_v)) {
2596 dirtag = Tag_val (dir_v);
2597 switch (dirtag) {
2598 case dir_first_visible:
2599 {
2600 int x0, y0, dir, first_index, last_index;
2601
2602 pos_v = Field (dir_v, 0);
2603 x0 = Int_val (Field (pos_v, 0));
2604 y0 = Int_val (Field (pos_v, 1));
2605 dir = Int_val (Field (pos_v, 2));
2606
2607 if (dir >= 0) {
2608 dir = 1;
2609 first_index = 0;
2610 last_index = page->slinkcount;
2611 }
2612 else {
2613 first_index = page->slinkcount - 1;
2614 last_index = -1;
2615 }
2616
2617 for (i = first_index; i != last_index; i += dir) {
2618 slink = &page->slinks[i];
2619 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2620 found = slink;
2621 break;
2622 }
2623 }
2624 }
2625 break;
2626
2627 case dir_left:
2628 slinkindex = Int_val (Field (dir_v, 0));
2629 found = &page->slinks[slinkindex];
2630 for (i = slinkindex - 1; i >= 0; --i) {
2631 slink = &page->slinks[i];
2632 if (slink->bbox.x0 < found->bbox.x0) {
2633 found = slink;
2634 break;
2635 }
2636 }
2637 break;
2638
2639 case dir_right:
2640 slinkindex = Int_val (Field (dir_v, 0));
2641 found = &page->slinks[slinkindex];
2642 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2643 slink = &page->slinks[i];
2644 if (slink->bbox.x0 > found->bbox.x0) {
2645 found = slink;
2646 break;
2647 }
2648 }
2649 break;
2650
2651 case dir_down:
2652 slinkindex = Int_val (Field (dir_v, 0));
2653 found = &page->slinks[slinkindex];
2654 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2655 slink = &page->slinks[i];
2656 if (slink->bbox.y0 >= found->bbox.y0) {
2657 found = slink;
2658 break;
2659 }
2660 }
2661 break;
2662
2663 case dir_up:
2664 slinkindex = Int_val (Field (dir_v, 0));
2665 found = &page->slinks[slinkindex];
2666 for (i = slinkindex - 1; i >= 0; --i) {
2667 slink = &page->slinks[i];
2668 if (slink->bbox.y0 <= found->bbox.y0) {
2669 found = slink;
2670 break;
2671 }
2672 }
2673 break;
2674 }
2675 }
2676 else {
2677 dirtag = Int_val (dir_v);
2678 switch (dirtag) {
2679 case dir_first:
2680 found = page->slinks;
2681 break;
2682
2683 case dir_last:
2684 if (page->slinks) {
2685 found = page->slinks + (page->slinkcount - 1);
2686 }
2687 break;
2688 }
2689 }
2690 if (found) {
2691 ret_v = caml_alloc_small (2, 1);
2692 Field (ret_v, 0) = Val_int (found - page->slinks);
2693 }
2694
2695 unlock ("ml_findlink");
2696 done:
2697 CAMLreturn (ret_v);
2698 }
2699
2700 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2701
2702 #define LINKTOVAL \
2703 { \
2704 int pageno; \
2705 \
2706 switch (link->dest.kind) { \
2707 case FZ_LINK_GOTO: \
2708 { \
2709 fz_point p; \
2710 \
2711 pageno = link->dest.ld.gotor.page; \
2712 p.x = 0; \
2713 p.y = 0; \
2714 \
2715 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2716 p.y = link->dest.ld.gotor.lt.y; \
2717 fz_transform_point (&p, &pdim->lctm); \
2718 } \
2719 tup_v = caml_alloc_tuple (2); \
2720 ret_v = caml_alloc_small (1, ugoto); \
2721 Field (tup_v, 0) = Val_int (pageno); \
2722 Field (tup_v, 1) = Val_int (p.y); \
2723 Field (ret_v, 0) = tup_v; \
2724 } \
2725 break; \
2726 \
2727 case FZ_LINK_URI: \
2728 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2729 ret_v = caml_alloc_small (1, uuri); \
2730 Field (ret_v, 0) = str_v; \
2731 break; \
2732 \
2733 case FZ_LINK_LAUNCH: \
2734 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2735 ret_v = caml_alloc_small (1, ulaunch); \
2736 Field (ret_v, 0) = str_v; \
2737 break; \
2738 \
2739 case FZ_LINK_NAMED: \
2740 str_v = caml_copy_string (link->dest.ld.named.named); \
2741 ret_v = caml_alloc_small (1, unamed); \
2742 Field (ret_v, 0) = str_v; \
2743 break; \
2744 \
2745 case FZ_LINK_GOTOR: \
2746 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2747 pageno = link->dest.ld.gotor.page; \
2748 tup_v = caml_alloc_tuple (2); \
2749 ret_v = caml_alloc_small (1, uremote); \
2750 Field (tup_v, 0) = str_v; \
2751 Field (tup_v, 1) = Val_int (pageno); \
2752 Field (ret_v, 0) = tup_v; \
2753 break; \
2754 \
2755 default: \
2756 { \
2757 char buf[80]; \
2758 \
2759 snprintf (buf, sizeof (buf), \
2760 "unhandled link kind %d", link->dest.kind); \
2761 str_v = caml_copy_string (buf); \
2762 ret_v = caml_alloc_small (1, uunexpected); \
2763 Field (ret_v, 0) = str_v; \
2764 } \
2765 break; \
2766 } \
2767 }
2768
2769 CAMLprim value ml_getlink (value ptr_v, value n_v)
2770 {
2771 CAMLparam2 (ptr_v, n_v);
2772 CAMLlocal3 (ret_v, tup_v, str_v);
2773 fz_link *link;
2774 struct page *page;
2775 struct pagedim *pdim;
2776 char *s = String_val (ptr_v);
2777
2778 ret_v = Val_int (0);
2779 if (trylock ("ml_getlink")) {
2780 goto done;
2781 }
2782
2783 page = parse_pointer ("ml_getlink", s);
2784 ensureslinks (page);
2785 pdim = &state.pagedims[page->pdimno];
2786 link = page->slinks[Int_val (n_v)].link;
2787 LINKTOVAL;
2788
2789 unlock ("ml_getlink");
2790 done:
2791 CAMLreturn (ret_v);
2792 }
2793
2794 CAMLprim value ml_getlinkcount (value ptr_v)
2795 {
2796 CAMLparam1 (ptr_v);
2797 struct page *page;
2798 char *s = String_val (ptr_v);
2799
2800 page = parse_pointer ("ml_getlinkcount", s);
2801 CAMLreturn (Val_int (page->slinkcount));
2802 }
2803
2804 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2805 {
2806 CAMLparam2 (ptr_v, n_v);
2807 CAMLlocal1 (ret_v);
2808 struct page *page;
2809 struct slink *slink;
2810 char *s = String_val (ptr_v);
2811
2812 page = parse_pointer ("ml_getlinkrect", s);
2813 ret_v = caml_alloc_tuple (4);
2814 if (trylock ("ml_getlinkrect")) {
2815 Field (ret_v, 0) = Val_int (0);
2816 Field (ret_v, 1) = Val_int (0);
2817 Field (ret_v, 2) = Val_int (0);
2818 Field (ret_v, 3) = Val_int (0);
2819 goto done;
2820 }
2821 ensureslinks (page);
2822
2823 slink = &page->slinks[Int_val (n_v)];
2824 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2825 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2826 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2827 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2828 unlock ("ml_getlinkrect");
2829
2830 done:
2831 CAMLreturn (ret_v);
2832 }
2833
2834 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2835 {
2836 CAMLparam3 (ptr_v, x_v, y_v);
2837 CAMLlocal3 (ret_v, tup_v, str_v);
2838 fz_link *link;
2839 struct page *page;
2840 char *s = String_val (ptr_v);
2841 int x = Int_val (x_v), y = Int_val (y_v);
2842 struct pagedim *pdim;
2843
2844 ret_v = Val_int (0);
2845 if (trylock ("ml_whatsunder")) {
2846 goto done;
2847 }
2848
2849 page = parse_pointer ("ml_whatsunder", s);
2850 pdim = &state.pagedims[page->pdimno];
2851 x += pdim->bounds.x0;
2852 y += pdim->bounds.y0;
2853 link = getlink (page, x, y);
2854 if (link) {
2855 LINKTOVAL;
2856 }
2857 else {
2858 fz_rect *b;
2859 fz_text_block *block;
2860
2861 ensuretext (page);
2862 for (block = page->text->blocks;
2863 block < page->text->blocks + page->text->len;
2864 ++block) {
2865 fz_text_line *line;
2866
2867 b = &block->bbox;
2868 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2869 continue;
2870
2871 for (line = block->lines;
2872 line < block->lines + block->len;
2873 ++line) {
2874 int spannum;
2875
2876 b = &line->bbox;
2877 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2878 continue;
2879
2880 for (spannum = 0; spannum < line->len; ++spannum) {
2881 int charnum;
2882 fz_text_span *span = line->spans[spannum];
2883
2884 b = &span->bbox;
2885 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2886 continue;
2887
2888 for (charnum = 0; charnum < span->len; ++charnum) {
2889 fz_rect bbox;
2890 fz_text_char_bbox (&bbox, span, charnum);
2891 b = &bbox;
2892
2893 if (x >= b->x0 && x <= b->x1
2894 && y >= b->y0 && y <= b->y1) {
2895 fz_text_style *style = span->text->style;
2896 const char *n2 =
2897 style->font && style->font->name
2898 ? style->font->name
2899 : "Span has no font name"
2900 ;
2901 FT_FaceRec *face = style->font->ft_face;
2902 if (face && face->family_name) {
2903 char *s;
2904 char *n1 = face->family_name;
2905 size_t l1 = strlen (n1);
2906 size_t l2 = strlen (n2);
2907
2908 if (l1 != l2 || memcmp (n1, n2, l1)) {
2909 s = malloc (l1 + l2 + 2);
2910 if (s) {
2911 memcpy (s, n2, l2);
2912 s[l2] = '=';
2913 memcpy (s + l2 + 1, n1, l1 + 1);
2914 str_v = caml_copy_string (s);
2915 free (s);
2916 }
2917 }
2918 }
2919 if (str_v == 0) {
2920 str_v = caml_copy_string (n2);
2921 }
2922 ret_v = caml_alloc_small (1, utext);
2923 Field (ret_v, 0) = str_v;
2924 goto unlock;
2925 }
2926 }
2927 }
2928 }
2929 }
2930 }
2931 unlock:
2932 unlock ("ml_whatsunder");
2933
2934 done:
2935 CAMLreturn (ret_v);
2936 }
2937
2938 CAMLprim value ml_seltext (value ptr_v, value rect_v)
2939 {
2940 CAMLparam2 (ptr_v, rect_v);
2941 fz_rect b;
2942 struct page *page;
2943 struct pagedim *pdim;
2944 int i, x0, x1, y0, y1;
2945 char *s = String_val (ptr_v);
2946 int fi = 0, li = 0;
2947 fz_text_block *block;
2948 fz_text_span *span, *fspan, *lspan;
2949 fz_text_line *line, *fline = NULL, *lline = NULL;
2950
2951 if (trylock ("ml_seltext")) {
2952 goto done;
2953 }
2954
2955 page = parse_pointer ("ml_seltext", s);
2956 ensuretext (page);
2957
2958 pdim = &state.pagedims[page->pdimno];
2959 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
2960 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
2961 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
2962 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
2963
2964 if (0) {
2965 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2966 glColor3ub (128, 128, 128);
2967 glRecti (x0, y0, x1, y1);
2968 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2969 }
2970
2971 fspan = lspan = NULL;
2972
2973 for (block = page->text->blocks;
2974 block < page->text->blocks + page->text->len;
2975 ++block) {
2976 for (line = block->lines;
2977 line < block->lines + block->len;
2978 ++line) {
2979 int spannum;
2980
2981 for (spannum = 0; spannum < line->len; ++spannum) {
2982 span = line->spans[spannum];
2983
2984 for (i = 0; i < span->len; ++i) {
2985 int selected = 0;
2986
2987 fz_text_char_bbox (&b, span, i);
2988
2989 if (x0 >= b.x0 && x0 <= b.x1
2990 && y0 >= b.y0 && y0 <= b.y1) {
2991 fspan = span;
2992 fline = line;
2993 fi = i;
2994 selected = 1;
2995 }
2996 if (x1 >= b.x0 && x1 <= b.x1
2997 && y1 >= b.y0 && y1 <= b.y1) {
2998 lspan = span;
2999 lline = line;
3000 li = i;
3001 selected = 1;
3002 }
3003 if (0 && selected) {
3004 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3005 glColor3ub (128, 128, 128);
3006 glRecti (b.x0, b.y0, b.x1, b.y1);
3007 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3008 }
3009 }
3010 }
3011 }
3012 }
3013 if (y1 < y0 || x1 < x0) {
3014 int swap = 0;
3015
3016 if (fspan == lspan) {
3017 swap = 1;
3018 }
3019 else {
3020 if (y1 < y0) {
3021 if (fline != lline) {
3022 swap = 1;
3023 }
3024 }
3025 }
3026
3027 if (swap) {
3028 i = fi;
3029 span = fspan;
3030
3031 fi = li;
3032 fspan = lspan;
3033
3034 li = i;
3035 lspan = span;
3036 }
3037 }
3038
3039 page->fmark.i = fi;
3040 page->fmark.span = fspan;
3041
3042 page->lmark.i = li;
3043 page->lmark.span = lspan;
3044
3045 unlock ("ml_seltext");
3046
3047 done:
3048 CAMLreturn (Val_unit);
3049 }
3050
3051 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
3052 {
3053 char buf[4];
3054 int i, len, ret;
3055
3056 for (i = a; i <= b; ++i) {
3057 len = fz_runetochar (buf, span->text[i].c);
3058 ret = fwrite (buf, len, 1, f);
3059
3060 if (ret != 1) {
3061 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
3062 len, ret, strerror (errno));
3063 return -1;
3064 }
3065 }
3066 return 0;
3067 }
3068
3069 #ifdef __CYGWIN__
3070 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
3071 {
3072 caml_failwith ("ml_popen not implemented under Cygwin");
3073 }
3074 #else
3075 CAMLprim value ml_popen (value command_v, value fds_v)
3076 {
3077 CAMLparam2 (command_v, fds_v);
3078 CAMLlocal2 (l_v, tup_v);
3079 int ret;
3080 char *msg = NULL;
3081 value earg_v = Nothing;
3082 posix_spawnattr_t attr;
3083 posix_spawn_file_actions_t fa;
3084 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
3085
3086 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3087 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3088 }
3089
3090 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3091 msg = "posix_spawnattr_init";
3092 goto fail1;
3093 }
3094
3095 #ifdef POSIX_SPAWN_USEVFORK
3096 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3097 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3098 goto fail;
3099 }
3100 #endif
3101
3102 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3103 int fd1, fd2;
3104
3105 tup_v = Field (l_v, 0);
3106 fd1 = Int_val (Field (tup_v, 0));
3107 fd2 = Int_val (Field (tup_v, 1));
3108 if (fd2 < 0) {
3109 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3110 msg = "posix_spawn_file_actions_addclose";
3111 earg_v = tup_v;
3112 goto fail;
3113 }
3114 }
3115 else {
3116 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3117 msg = "posix_spawn_file_actions_adddup2";
3118 earg_v = tup_v;
3119 goto fail;
3120 }
3121 }
3122 }
3123
3124 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
3125 msg = "posix_spawn";
3126 goto fail;
3127 }
3128
3129 fail:
3130 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3131 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3132 }
3133
3134 fail1:
3135 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3136 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3137 strerror (ret));
3138 }
3139
3140 if (msg)
3141 unix_error (ret, msg, earg_v);
3142
3143 CAMLreturn (Val_unit);
3144 }
3145 #endif
3146
3147 CAMLprim value ml_copysel (value fd_v, value ptr_v)
3148 {
3149 CAMLparam1 (ptr_v);
3150 FILE *f;
3151 int seen = 0;
3152 struct page *page;
3153 fz_text_line *line;
3154 fz_text_block *block;
3155 int fd = Int_val (fd_v);
3156 char *s = String_val (ptr_v);
3157
3158 if (trylock ("ml_copysel")) {
3159 goto done;
3160 }
3161
3162 page = parse_pointer ("ml_sopysel", s);
3163
3164 if (!page->fmark.span || !page->lmark.span) {
3165 fprintf (stderr, "nothing to copy\n");
3166 goto unlock;
3167 }
3168
3169 f = fdopen (fd, "w");
3170 if (!f) {
3171 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3172 strerror (errno));
3173 f = stdout;
3174 }
3175
3176 for (block = page->text->blocks;
3177 block < page->text->blocks + page->text->len;
3178 ++block) {
3179 for (line = block->lines;
3180 line < block->lines + block->len;
3181 ++line) {
3182 int spannum;
3183
3184 for (spannum = 0; spannum < line->len; ++spannum) {
3185 int a, b;
3186 fz_text_span *span = line->spans[spannum];
3187
3188 seen |= span == page->fmark.span || span == page->lmark.span;
3189 a = span == page->fmark.span ? page->fmark.i : 0;
3190 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3191
3192 if (seen) {
3193 if (pipespan (f, span, a, b)) {
3194 goto close;
3195 }
3196 if (spannum == line->len - 1) {
3197 if (putc ('\n', f) == EOF) {
3198 fprintf (stderr,
3199 "failed break line on sel pipe: %s\n",
3200 strerror (errno));
3201 goto close;
3202 }
3203 }
3204 if (span == page->lmark.span) {
3205 goto endloop;
3206 }
3207 }
3208 }
3209 }
3210 }
3211 endloop:
3212 page->lmark.span = NULL;
3213 page->fmark.span = NULL;
3214
3215 close:
3216 if (f != stdout) {
3217 int ret = fclose (f);
3218 fd = -1;
3219 if (ret == -1) {
3220 if (errno != ECHILD) {
3221 fprintf (stderr, "failed to close sel pipe: %s\n",
3222 strerror (errno));
3223 }
3224 }
3225 }
3226 unlock:
3227 unlock ("ml_copysel");
3228
3229 done:
3230 if (fd >= 0) {
3231 if (close (fd)) {
3232 fprintf (stderr, "failed to close sel pipe: %s\n",
3233 strerror (errno));
3234 }
3235 }
3236 CAMLreturn (Val_unit);
3237 }
3238
3239 CAMLprim value ml_getpdimrect (value pagedimno_v)
3240 {
3241 CAMLparam1 (pagedimno_v);
3242 CAMLlocal1 (ret_v);
3243 int pagedimno = Int_val (pagedimno_v);
3244 fz_rect box;
3245
3246 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3247 if (trylock ("ml_getpdimrect")) {
3248 box = fz_empty_rect;
3249 }
3250 else {
3251 box = state.pagedims[pagedimno].mediabox;
3252 unlock ("ml_getpdimrect");
3253 }
3254
3255 Store_double_field (ret_v, 0, box.x0);
3256 Store_double_field (ret_v, 1, box.x1);
3257 Store_double_field (ret_v, 2, box.y0);
3258 Store_double_field (ret_v, 3, box.y1);
3259
3260 CAMLreturn (ret_v);
3261 }
3262
3263 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3264 value dw_v, value cols_v)
3265 {
3266 CAMLparam3 (winw_v, winh_v, dw_v);
3267 CAMLlocal1 (ret_v);
3268 int i;
3269 double zoom = -1.;
3270 double maxh = 0.0;
3271 struct pagedim *p;
3272 double winw = Int_val (winw_v);
3273 double winh = Int_val (winh_v);
3274 double dw = Int_val (dw_v);
3275 double cols = Int_val (cols_v);
3276 double pw = 1.0, ph = 1.0;
3277
3278 if (trylock ("ml_zoom_for_height")) {
3279 goto done;
3280 }
3281
3282 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3283 double w = p->pagebox.x1 / cols;
3284 double h = p->pagebox.y1;
3285 if (h > maxh) {
3286 maxh = h;
3287 ph = h;
3288 if (state.fitmodel != FitProportional) pw = w;
3289 }
3290 if ((state.fitmodel == FitProportional) && w > pw) pw = w;
3291 }
3292
3293 zoom = (((winh / ph) * pw) + dw) / winw;
3294 unlock ("ml_zoom_for_height");
3295 done:
3296 ret_v = caml_copy_double (zoom);
3297 CAMLreturn (ret_v);
3298 }
3299
3300 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3301 {
3302 CAMLparam4 (pt_v, x_v, y_v, string_v);
3303 CAMLlocal1 (ret_v);
3304 int pt = Int_val(pt_v);
3305 int x = Int_val (x_v);
3306 int y = Int_val (y_v);
3307 double w;
3308
3309 w = draw_string (state.face, pt, x, y, String_val (string_v));
3310 ret_v = caml_copy_double (w);
3311 CAMLreturn (ret_v);
3312 }
3313
3314 CAMLprim value ml_measure_string (value pt_v, value string_v)
3315 {
3316 CAMLparam2 (pt_v, string_v);
3317 CAMLlocal1 (ret_v);
3318 int pt = Int_val (pt_v);
3319 double w;
3320
3321 w = measure_string (state.face, pt, String_val (string_v));
3322 ret_v = caml_copy_double (w);
3323 CAMLreturn (ret_v);
3324 }
3325
3326 CAMLprim value ml_getpagebox (value opaque_v)
3327 {
3328 CAMLparam1 (opaque_v);
3329 CAMLlocal1 (ret_v);
3330 fz_rect rect;
3331 fz_irect bbox;
3332 fz_matrix ctm;
3333 fz_device *dev;
3334 char *s = String_val (opaque_v);
3335 struct page *page = parse_pointer ("ml_getpagebox", s);
3336
3337 ret_v = caml_alloc_tuple (4);
3338 dev = fz_new_bbox_device (state.ctx, &rect);
3339 dev->hints |= FZ_IGNORE_SHADE;
3340
3341 switch (page->type) {
3342 case DPDF:
3343 ctm = pagectm (page);
3344 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, &ctm, NULL);
3345 break;
3346
3347 case DXPS:
3348 ctm = pagectm (page);
3349 xps_run_page (state.u.xps, page->u.xpspage, dev, &ctm, NULL);
3350 break;
3351
3352 default:
3353 rect = fz_infinite_rect;
3354 break;
3355 }
3356
3357 fz_free_device (dev);
3358 fz_round_rect (&bbox, &rect);
3359 Field (ret_v, 0) = Val_int (bbox.x0);
3360 Field (ret_v, 1) = Val_int (bbox.y0);
3361 Field (ret_v, 2) = Val_int (bbox.x1);
3362 Field (ret_v, 3) = Val_int (bbox.y1);
3363
3364 CAMLreturn (ret_v);
3365 }
3366
3367 CAMLprim value ml_setaalevel (value level_v)
3368 {
3369 CAMLparam1 (level_v);
3370
3371 state.aalevel = Int_val (level_v);
3372 CAMLreturn (Val_unit);
3373 }
3374
3375 #undef pixel
3376 #include <X11/Xlib.h>
3377 #include <GL/glx.h>
3378
3379 static struct {
3380 Display *dpy;
3381 GLXContext ctx;
3382 GLXDrawable drawable;
3383 } glx;
3384
3385 #include "keysym2ucs.c"
3386
3387 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3388 {
3389 CAMLparam1 (keysym_v);
3390 CAMLlocal1 (str_v);
3391 KeySym keysym = Int_val (keysym_v);
3392 Rune rune;
3393 int len;
3394 char buf[5];
3395
3396 rune = keysym2ucs (keysym);
3397 len = fz_runetochar (buf, rune);
3398 buf[len] = 0;
3399 str_v = caml_copy_string (buf);
3400 CAMLreturn (str_v);
3401 }
3402
3403 CAMLprim value ml_glx (value win_v)
3404 {
3405 CAMLparam1 (win_v);
3406 XVisualInfo *visual;
3407 int screen, wid = Int_val (win_v);
3408 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3409
3410 glx.dpy = XOpenDisplay (NULL);
3411 if (!glx.dpy) {
3412 caml_failwith ("XOpenDisplay");
3413 }
3414
3415 screen = DefaultScreen (glx.dpy);
3416 visual = glXChooseVisual (glx.dpy, screen, attributes);
3417 if (!visual) {
3418 XCloseDisplay (glx.dpy);
3419 glx.dpy = NULL;
3420 caml_failwith ("glXChooseVisual");
3421 }
3422
3423 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3424 XFree (visual);
3425 if (!glx.ctx) {
3426 XCloseDisplay (glx.dpy);
3427 glx.dpy = NULL;
3428 caml_failwith ("glXCreateContext");
3429 }
3430
3431 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3432 glXDestroyContext (glx.dpy, glx.ctx);
3433 XCloseDisplay (glx.dpy);
3434 glx.dpy = NULL;
3435 glx.ctx = NULL;
3436 caml_failwith ("glXMakeCurrent");
3437 }
3438 glx.drawable = wid;
3439 CAMLreturn (Val_unit);
3440 }
3441
3442 CAMLprim value ml_swapb (value unit_v)
3443 {
3444 CAMLparam1 (unit_v);
3445 glXSwapBuffers (glx.dpy, glx.drawable);
3446 CAMLreturn (Val_unit);
3447 }
3448
3449 CAMLprim value ml_glxsync (value unit_v)
3450 {
3451 CAMLparam1 (unit_v);
3452 if (glx.dpy && glx.ctx) {
3453 glXWaitX ();
3454 glXWaitGL ();
3455 }
3456 CAMLreturn (Val_unit);
3457 }
3458
3459 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3460 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3461
3462 CAMLprim value ml_platform (value unit_v)
3463 {
3464 CAMLparam1 (unit_v);
3465 int platid = piunknown;
3466
3467 #if defined __linux__
3468 platid = pilinux;
3469 #elif defined __CYGWIN__
3470 platid = picygwin;
3471 #elif defined __DragonFly__
3472 platid = pidragonflybsd;
3473 #elif defined __FreeBSD__
3474 platid = pifreebsd;
3475 #elif defined __OpenBSD__
3476 platid = piopenbsd;
3477 #elif defined __NetBSD__
3478 platid = pinetbsd;
3479 #elif defined __sun__
3480 platid = pisun;
3481 #elif defined __APPLE__
3482 platid = piosx;
3483 #endif
3484 CAMLreturn (Val_int (platid));
3485 }
3486
3487 CAMLprim value ml_cloexec (value fd_v)
3488 {
3489 CAMLparam1 (fd_v);
3490 int fd = Int_val (fd_v);
3491
3492 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3493 uerror ("fcntl", Nothing);
3494 }
3495 CAMLreturn (Val_unit);
3496 }
3497
3498 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3499 {
3500 CAMLparam2 (w_v, h_v);
3501 CAMLlocal1 (ret_v);
3502 struct pbo *pbo;
3503 int w = Int_val (w_v);
3504 int h = Int_val (h_v);
3505 int cs = Int_val (cs_v);
3506
3507 if (state.pbo_usable) {
3508 pbo = calloc (sizeof (*pbo), 1);
3509 if (!pbo) {
3510 err (1, "calloc pbo");
3511 }
3512
3513 switch (cs) {
3514 case 0:
3515 case 1:
3516 pbo->size = w*h*4;
3517 break;
3518 case 2:
3519 pbo->size = w*h*2;
3520 break;
3521 default:
3522 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3523 }
3524
3525 state.glGenBuffersARB (1, &pbo->id);
3526 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3527 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3528 NULL, GL_STREAM_DRAW);
3529 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3530 GL_READ_WRITE);
3531 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3532 if (!pbo->ptr) {
3533 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3534 state.glDeleteBuffersARB (1, &pbo->id);
3535 free (pbo);
3536 ret_v = caml_copy_string ("0");
3537 }
3538 else {
3539 int res;
3540 char *s;
3541
3542 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3543 if (res < 0) {
3544 err (1, "snprintf %" FMT_ptr " failed", pbo);
3545 }
3546 s = malloc (res+1);
3547 if (!s) {
3548 err (1, "malloc %d bytes failed", res+1);
3549 }
3550 res = sprintf (s, "%" FMT_ptr, pbo);
3551 if (res < 0) {
3552 err (1, "sprintf %" FMT_ptr " failed", pbo);
3553 }
3554 ret_v = caml_copy_string (s);
3555 free (s);
3556 }
3557 }
3558 else {
3559 ret_v = caml_copy_string ("0");
3560 }
3561 CAMLreturn (ret_v);
3562 }
3563
3564 CAMLprim value ml_freepbo (value s_v)
3565 {
3566 CAMLparam1 (s_v);
3567 char *s = String_val (s_v);
3568 struct tile *tile = parse_pointer ("ml_freepbo", s);
3569
3570 if (tile->pbo) {
3571 state.glDeleteBuffersARB (1, &tile->pbo->id);
3572 tile->pbo->id = -1;
3573 tile->pbo->ptr = NULL;
3574 tile->pbo->size = -1;
3575 }
3576 CAMLreturn (Val_unit);
3577 }
3578
3579 CAMLprim value ml_unmappbo (value s_v)
3580 {
3581 CAMLparam1 (s_v);
3582 char *s = String_val (s_v);
3583 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3584
3585 if (tile->pbo) {
3586 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3587 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3588 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3589 }
3590 tile->pbo->ptr = NULL;
3591 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3592 }
3593 CAMLreturn (Val_unit);
3594 }
3595
3596 static void setuppbo (void)
3597 {
3598 #define GGPA(n) *(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n)
3599 GGPA (glBindBufferARB);
3600 if (state.glBindBufferARB) {
3601 GGPA (glUnmapBufferARB);
3602 if (state.glUnmapBufferARB) {
3603 GGPA (glMapBufferARB);
3604 if (state.glMapBufferARB) {
3605 GGPA (glBufferDataARB);
3606 if (state.glBufferDataARB) {
3607 GGPA (glGenBuffersARB);
3608 if (state.glGenBuffersARB) {
3609 GGPA (glDeleteBuffersARB);
3610 if (state.glDeleteBuffersARB) {
3611 state.pbo_usable = 1;
3612 }
3613 }
3614 }
3615 }
3616 }
3617 }
3618 #undef GGPA
3619 }
3620
3621 CAMLprim value ml_pbo_usable (value unit_v)
3622 {
3623 CAMLparam1 (unit_v);
3624 CAMLreturn (Val_bool (state.pbo_usable));
3625 }
3626
3627 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
3628 {
3629 CAMLparam3 (ptr_v, x_v, y_v);
3630 CAMLlocal2 (ret_v, tup_v);
3631 struct page *page;
3632 char *s = String_val (ptr_v);
3633 int x = Int_val (x_v), y = Int_val (y_v);
3634 struct pagedim *pdim;
3635 fz_point p;
3636 fz_matrix ctm;
3637
3638 page = parse_pointer ("ml_unproject", s);
3639 pdim = &state.pagedims[page->pdimno];
3640
3641 ret_v = Val_int (0);
3642 if (trylock ("ml_unproject")) {
3643 goto done;
3644 }
3645
3646 switch (page->type) {
3647 case DPDF:
3648 trimctm (page->u.pdfpage, page->pdimno);
3649 break;
3650
3651 default:
3652 break;
3653 }
3654 p.x = x;
3655 p.y = y;
3656
3657 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
3658 fz_invert_matrix (&ctm, &ctm);
3659 fz_transform_point (&p, &ctm);
3660
3661 tup_v = caml_alloc_tuple (2);
3662 ret_v = caml_alloc_small (1, 1);
3663 Field (tup_v, 0) = Val_int (p.x);
3664 Field (tup_v, 1) = Val_int (p.y);
3665 Field (ret_v, 0) = tup_v;
3666
3667 unlock ("ml_unproject");
3668 done:
3669 CAMLreturn (ret_v);
3670 }
3671
3672 static void makestippletex (void)
3673 {
3674 const char *pixels = "\xff\xff\0\0";
3675 glGenTextures (1, &state.stid);
3676 glBindTexture (GL_TEXTURE_1D, state.stid);
3677 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
3678 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
3679 glTexImage1D (
3680 GL_TEXTURE_1D,
3681 0,
3682 GL_ALPHA,
3683 4,
3684 0,
3685 GL_ALPHA,
3686 GL_UNSIGNED_BYTE,
3687 pixels
3688 );
3689 }
3690
3691 CAMLprim value ml_init (value pipe_v, value params_v)
3692 {
3693 CAMLparam2 (pipe_v, params_v);
3694 CAMLlocal2 (trim_v, fuzz_v);
3695 int ret;
3696 int texcount;
3697 char *fontpath;
3698 int colorspace;
3699 int mustoresize;
3700 int haspboext;
3701 struct sigaction sa;
3702
3703 state.cr = Int_val (Field (pipe_v, 0));
3704 state.cw = Int_val (Field (pipe_v, 1));
3705 state.rotate = Int_val (Field (params_v, 0));
3706 state.fitmodel = Int_val (Field (params_v, 1));
3707 trim_v = Field (params_v, 2);
3708 texcount = Int_val (Field (params_v, 3));
3709 state.sliceheight = Int_val (Field (params_v, 4));
3710 mustoresize = Int_val (Field (params_v, 5));
3711 colorspace = Int_val (Field (params_v, 6));
3712 fontpath = String_val (Field (params_v, 7));
3713 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3714 if (!state.trimcachepath) {
3715 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
3716 strerror (errno));
3717 }
3718 haspboext = Bool_val (Field (params_v, 9));
3719
3720 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3721
3722 state.trimmargins = Bool_val (Field (trim_v, 0));
3723 fuzz_v = Field (trim_v, 1);
3724 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3725 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3726 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3727 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3728
3729 set_tex_params (colorspace);
3730
3731 if (*fontpath) {
3732 state.face = load_font (fontpath);
3733 }
3734 else {
3735 unsigned int len;
3736 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3737
3738 state.face = load_builtin_font (base, len);
3739 }
3740 if (!state.face) _exit (1);
3741
3742 realloctexts (texcount);
3743
3744 if (haspboext) {
3745 setuppbo ();
3746 }
3747
3748 makestippletex ();
3749 #ifdef __CYGWIN__
3750 sa.sa_handler = SIG_IGN;
3751 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
3752 #else
3753 sa.sa_handler = SIG_DFL;
3754 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
3755 #endif
3756 if (sigemptyset (&sa.sa_mask)) {
3757 err (1, "sigemptyset");
3758 }
3759 if (sigaction (SIGCHLD, &sa, NULL)) {
3760 err (1, "sigaction");
3761 }
3762
3763 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
3764 if (ret) {
3765 errx (1, "pthread_create: %s", strerror (ret));
3766 }
3767
3768 CAMLreturn (Val_unit);
3769 }
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