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Remove redundant line
[llpp.git] / link.c
bloba074640ccb233c56e77661399bc0e57d08ac558f
1 /* lots of code c&p-ed directly from mupdf */
2 #define CAML_NAME_SPACE
3
4 #include <errno.h>
5 #include <stdio.h>
6 #include <ctype.h>
7 #include <string.h>
8 #include <stdlib.h>
9 #include <signal.h>
10 #include <wchar.h>
11
12 #include <unistd.h>
13 #include <pthread.h>
14 #include <sys/time.h>
15 #include <sys/types.h>
16 #include <sys/ioctl.h>
17 #include <sys/utsname.h>
18
19 #ifdef __CYGWIN__
20 #include <cygwin/socket.h> /* FIONREAD */
21 #else
22 #include <spawn.h>
23 #endif
24
25 #include <regex.h>
26 #include <stdarg.h>
27 #include <limits.h>
28 #include <inttypes.h>
29
30 #include <GL/gl.h>
31
32 #include <caml/fail.h>
33 #include <caml/alloc.h>
34 #include <caml/memory.h>
35 #include <caml/unixsupport.h>
36
37 #pragma GCC diagnostic push
38 #pragma GCC diagnostic ignored "-Wunused-parameter"
39 #pragma GCC diagnostic ignored "-Wshadow"
40 #include <mupdf/fitz.h>
41 #pragma GCC diagnostic pop
42 #include <mupdf/pdf.h>
43
44 #include <ft2build.h>
45 #include FT_FREETYPE_H
46
47 #ifdef USE_FONTCONFIG
48 #include <fontconfig/fontconfig.h>
49 #endif
50
51 #define PIGGYBACK
52 #define CACHE_PAGEREFS
53
54 #ifndef __USE_GNU
55 extern char **environ;
56 #endif
57
58 #define MIN(a,b) ((a) < (b) ? (a) : (b))
59 #define MAX(a,b) ((a) > (b) ? (a) : (b))
60
61 #if defined __GNUC__
62 #define NORETURN_ATTR __attribute__ ((noreturn))
63 #define UNUSED_ATTR __attribute__ ((unused))
64 #if !defined __clang__
65 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
66 #else
67 #define OPTIMIZE_ATTR(n)
68 #endif
69 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
70 #else
71 #define NORETURN_ATTR
72 #define UNUSED_ATTR
73 #define OPTIMIZE_ATTR(n)
74 #define GCC_FMT_ATTR(a, b)
75 #endif
76
77 #define FMT_s "zu"
78
79 #define FMT_ptr PRIxPTR
80 #define SCN_ptr SCNxPTR
81 #define FMT_ptr_cast(p) ((uintptr_t) (p))
82 #define SCN_ptr_cast(p) ((uintptr_t *) (p))
83
84 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
85 err (int exitcode, const char *fmt, ...)
86 {
87 va_list ap;
88 int savederrno;
89
90 savederrno = errno;
91 va_start (ap, fmt);
92 vfprintf (stderr, fmt, ap);
93 va_end (ap);
94 fprintf (stderr, ": %s\n", strerror (savederrno));
95 fflush (stderr);
96 _exit (exitcode);
97 }
98
99 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
100 errx (int exitcode, const char *fmt, ...)
101 {
102 va_list ap;
103
104 va_start (ap, fmt);
105 vfprintf (stderr, fmt, ap);
106 va_end (ap);
107 fputc ('\n', stderr);
108 fflush (stderr);
109 _exit (exitcode);
110 }
111
112 #ifndef GL_TEXTURE_RECTANGLE_ARB
113 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
114 #endif
115
116 #ifndef GL_BGRA
117 #define GL_BGRA 0x80E1
118 #endif
119
120 #ifndef GL_UNSIGNED_INT_8_8_8_8
121 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
122 #endif
123
124 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
125 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
126 #endif
127
128 #if 0
129 #define lprintf printf
130 #else
131 #define lprintf(...)
132 #endif
133
134 #define ARSERT(cond) for (;;) { \
135 if (!(cond)) { \
136 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
137 } \
138 break; \
139 }
140
141 struct slice {
142 int h;
143 int texindex;
144 };
145
146 struct tile {
147 int w, h;
148 int slicecount;
149 int sliceheight;
150 struct pbo *pbo;
151 fz_pixmap *pixmap;
152 struct slice slices[1];
153 };
154
155 struct pagedim {
156 int pageno;
157 int rotate;
158 int left;
159 int tctmready;
160 fz_irect bounds;
161 fz_rect pagebox;
162 fz_rect mediabox;
163 fz_matrix ctm, zoomctm, lctm, tctm;
164 };
165
166 struct slink {
167 enum { SLINK, SANNOT } tag;
168 fz_irect bbox;
169 union {
170 fz_link *link;
171 fz_annot *annot;
172 } u;
173 };
174
175 struct annot {
176 fz_irect bbox;
177 fz_annot *annot;
178 };
179
180 struct page {
181 int tgen;
182 int sgen;
183 int agen;
184 int pageno;
185 int pdimno;
186 fz_text_page *text;
187 fz_text_sheet *sheet;
188 fz_page *fzpage;
189 fz_display_list *dlist;
190 int slinkcount;
191 struct slink *slinks;
192 int annotcount;
193 struct annot *annots;
194 struct mark {
195 int i;
196 fz_text_span *span;
197 } fmark, lmark;
198 };
199
200 struct {
201 int sliceheight;
202 struct pagedim *pagedims;
203 int pagecount;
204 int pagedimcount;
205 fz_document *doc;
206 fz_context *ctx;
207 int w, h;
208
209 int texindex;
210 int texcount;
211 GLuint *texids;
212
213 GLenum texiform;
214 GLenum texform;
215 GLenum texty;
216
217 fz_colorspace *colorspace;
218
219 struct {
220 int w, h;
221 struct slice *slice;
222 } *texowners;
223
224 int rotate;
225 enum { FitWidth, FitProportional, FitPage } fitmodel;
226 int trimmargins;
227 int needoutline;
228 int gen;
229 int aalevel;
230
231 int trimanew;
232 fz_irect trimfuzz;
233 fz_pixmap *pig;
234
235 pthread_t thread;
236 int csock;
237 FT_Face face;
238
239 char *trimcachepath;
240 int cxack;
241 int dirty;
242
243 GLuint stid;
244
245 int pbo_usable;
246 void (*glBindBufferARB) (GLenum, GLuint);
247 GLboolean (*glUnmapBufferARB) (GLenum);
248 void *(*glMapBufferARB) (GLenum, GLenum);
249 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
250 void (*glGenBuffersARB) (GLsizei, GLuint *);
251 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
252
253 GLfloat texcoords[8];
254 GLfloat vertices[16];
255
256 #ifdef CACHE_PAGEREFS
257 struct {
258 int idx;
259 int count;
260 pdf_obj **objs;
261 pdf_document *pdf;
262 } pdflut;
263 #endif
264 } state;
265
266 struct pbo {
267 GLuint id;
268 void *ptr;
269 size_t size;
270 };
271
272 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
273 {
274 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
275 }
276
277 static void UNUSED_ATTR debug_bbox (const char *cap, fz_irect r)
278 {
279 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
280 }
281
282 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
283 {
284 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
285 m.a, m.b, m.c, m.d, m.e, m.f);
286 }
287
288 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
289
290 static void lock (const char *cap)
291 {
292 int ret = pthread_mutex_lock (&mutex);
293 if (ret) {
294 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
295 }
296 }
297
298 static void unlock (const char *cap)
299 {
300 int ret = pthread_mutex_unlock (&mutex);
301 if (ret) {
302 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
303 }
304 }
305
306 static int trylock (const char *cap)
307 {
308 int ret = pthread_mutex_trylock (&mutex);
309 if (ret && ret != EBUSY) {
310 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
311 }
312 return ret == EBUSY;
313 }
314
315 static void *parse_pointer (const char *cap, const char *s)
316 {
317 int ret;
318 void *ptr;
319
320 ret = sscanf (s, "%" SCN_ptr, SCN_ptr_cast (&ptr));
321 if (ret != 1) {
322 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
323 }
324 return ptr;
325 }
326
327 static double now (void)
328 {
329 struct timeval tv;
330
331 if (gettimeofday (&tv, NULL)) {
332 err (1, "gettimeofday");
333 }
334 return tv.tv_sec + tv.tv_usec*1e-6;
335 }
336
337 static int hasdata (void)
338 {
339 int ret, avail;
340 ret = ioctl (state.csock, FIONREAD, &avail);
341 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
342 return avail > 0;
343 }
344
345 CAMLprim value ml_hasdata (value fd_v)
346 {
347 CAMLparam1 (fd_v);
348 int ret, avail;
349
350 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
351 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
352 CAMLreturn (Val_bool (avail > 0));
353 }
354
355 static void readdata (void *p, int size)
356 {
357 ssize_t n;
358
359 again:
360 n = read (state.csock, p, size);
361 if (n < 0) {
362 if (errno == EINTR) goto again;
363 err (1, "read (req %d, ret %zd)", size, n);
364 }
365 if (n - size) {
366 if (!n) errx (1, "EOF while reading");
367 errx (1, "read (req %d, ret %zd)", size, n);
368 }
369 }
370
371 static void writedata (char *p, int size)
372 {
373 ssize_t n;
374
375 p[0] = (size >> 24) & 0xff;
376 p[1] = (size >> 16) & 0xff;
377 p[2] = (size >> 8) & 0xff;
378 p[3] = (size >> 0) & 0xff;
379
380 n = write (state.csock, p, size + 4);
381 if (n - size - 4) {
382 if (!n) errx (1, "EOF while writing data");
383 err (1, "write (req %d, ret %zd)", size + 4, n);
384 }
385 }
386
387 static int readlen (void)
388 {
389 unsigned char p[4];
390
391 readdata (p, 4);
392 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
393 }
394
395 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
396 {
397 int size = 200, len;
398 va_list ap;
399 char *buf;
400
401 buf = malloc (size);
402 for (;;) {
403 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
404
405 va_start (ap, fmt);
406 len = vsnprintf (buf + 4, size - 4, fmt, ap);
407 va_end (ap);
408
409 if (len > -1) {
410 if (len < size - 4) {
411 writedata (buf, len);
412 break;
413 }
414 else size = len + 5;
415 }
416 else {
417 err (1, "vsnprintf for `%s' failed", fmt);
418 }
419 buf = realloc (buf, size);
420 }
421 free (buf);
422 }
423
424 static void closedoc (void)
425 {
426 #ifdef CACHE_PAGEREFS
427 if (state.pdflut.objs) {
428 int i;
429
430 for (i = 0; i < state.pdflut.count; ++i) {
431 pdf_drop_obj (state.ctx, state.pdflut.objs[i]);
432 }
433 free (state.pdflut.objs);
434 state.pdflut.objs = NULL;
435 state.pdflut.idx = 0;
436 }
437 #endif
438 if (state.doc) {
439 fz_drop_document (state.ctx, state.doc);
440 state.doc = NULL;
441 }
442 }
443
444 static int openxref (char *filename, char *password)
445 {
446 int i;
447
448 for (i = 0; i < state.texcount; ++i) {
449 state.texowners[i].w = -1;
450 state.texowners[i].slice = NULL;
451 }
452
453 closedoc ();
454
455 state.dirty = 0;
456 if (state.pagedims) {
457 free (state.pagedims);
458 state.pagedims = NULL;
459 }
460 state.pagedimcount = 0;
461
462 fz_set_aa_level (state.ctx, state.aalevel);
463 state.doc = fz_open_document (state.ctx, filename);
464 if (fz_needs_password (state.ctx, state.doc)) {
465 if (password && !*password) {
466 printd ("pass");
467 return 0;
468 }
469 else {
470 int ok = fz_authenticate_password (state.ctx, state.doc, password);
471 if (!ok) {
472 printd ("pass fail");
473 return 0;
474 }
475 }
476 }
477 state.pagecount = fz_count_pages (state.ctx, state.doc);
478 return 1;
479 }
480
481 static void pdfinfo (void)
482 {
483 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
484 if (pdf) {
485 pdf_obj *infoobj;
486
487 printd ("info PDF version\t%d.%d",
488 pdf->version / 10, pdf->version % 10);
489
490 infoobj = pdf_dict_gets (state.ctx, pdf_trailer (state.ctx,
491 pdf), "Info");
492 if (infoobj) {
493 unsigned int i;
494 char *s;
495 char *items[] = { "Title", "Author", "Creator",
496 "Producer", "CreationDate" };
497
498 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
499 pdf_obj *obj = pdf_dict_gets (state.ctx, infoobj, items[i]);
500 s = pdf_to_utf8 (state.ctx, pdf, obj);
501 if (*s) printd ("info %s\t%s", items[i], s);
502 fz_free (state.ctx, s);
503 }
504 }
505 printd ("infoend");
506 }
507 }
508
509 static void unlinktile (struct tile *tile)
510 {
511 int i;
512
513 for (i = 0; i < tile->slicecount; ++i) {
514 struct slice *s = &tile->slices[i];
515
516 if (s->texindex != -1) {
517 if (state.texowners[s->texindex].slice == s) {
518 state.texowners[s->texindex].slice = NULL;
519 }
520 }
521 }
522 }
523
524 static void freepage (struct page *page)
525 {
526 if (!page) return;
527 if (page->text) {
528 fz_drop_text_page (state.ctx, page->text);
529 }
530 if (page->sheet) {
531 fz_drop_text_sheet (state.ctx, page->sheet);
532 }
533 if (page->slinks) {
534 free (page->slinks);
535 }
536 fz_drop_display_list (state.ctx, page->dlist);
537 fz_drop_page (state.ctx, page->fzpage);
538 free (page);
539 }
540
541 static void freetile (struct tile *tile)
542 {
543 unlinktile (tile);
544 if (!tile->pbo) {
545 #ifndef PIGGYBACK
546 fz_drop_pixmap (state.ctx, tile->pixmap);
547 #else
548 if (state.pig) {
549 fz_drop_pixmap (state.ctx, state.pig);
550 }
551 state.pig = tile->pixmap;
552 #endif
553 }
554 else {
555 free (tile->pbo);
556 fz_drop_pixmap (state.ctx, tile->pixmap);
557 }
558 free (tile);
559 }
560
561 #ifdef __ALTIVEC__
562 #include <stdint.h>
563 #include <altivec.h>
564
565 static int cacheline32bytes;
566
567 static void __attribute__ ((constructor)) clcheck (void)
568 {
569 char **envp = environ;
570 unsigned long *auxv;
571
572 while (*envp++);
573
574 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
575 if (*auxv == 19) {
576 cacheline32bytes = auxv[1] == 32;
577 return;
578 }
579 }
580 }
581
582 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
583 {
584 size_t size = pixmap->w * pixmap->h * pixmap->n;
585 if (cacheline32bytes && size > 32) {
586 intptr_t a1, a2, diff;
587 size_t sizea, i;
588 vector unsigned char v = vec_splat_u8 (-1);
589 vector unsigned char *p;
590
591 a1 = a2 = (intptr_t) pixmap->samples;
592 a2 = (a1 + 31) & ~31;
593 diff = a2 - a1;
594 sizea = size - diff;
595 p = (void *) a2;
596
597 while (a1 != a2) *(char *) a1++ = 0xff;
598 for (i = 0; i < (sizea & ~31); i += 32) {
599 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
600 vec_st (v, i, p);
601 vec_st (v, i + 16, p);
602 }
603 while (i < sizea) *((char *) a1 + i++) = 0xff;
604 }
605 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
606 }
607 #else
608 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
609 #endif
610
611 static void trimctm (pdf_page *page, int pindex)
612 {
613 fz_matrix ctm;
614 struct pagedim *pdim = &state.pagedims[pindex];
615
616 if (!pdim->tctmready) {
617 if (state.trimmargins) {
618 fz_rect realbox;
619 fz_matrix rm, sm, tm, im, ctm1;
620
621 fz_rotate (&rm, -pdim->rotate);
622 fz_scale (&sm, 1, -1);
623 fz_concat (&ctm, &rm, &sm);
624 realbox = pdim->mediabox;
625 fz_transform_rect (&realbox, &ctm);
626 fz_translate (&tm, -realbox.x0, -realbox.y0);
627 fz_concat (&ctm1, &ctm, &tm);
628 fz_invert_matrix (&im, &page->ctm);
629 fz_concat (&ctm, &im, &ctm1);
630 }
631 else {
632 ctm = fz_identity;
633 }
634 pdim->tctm = ctm;
635 pdim->tctmready = 1;
636 }
637 }
638
639 static fz_matrix pagectm1 (fz_page *fzpage, struct pagedim *pdim)
640 {
641 fz_matrix ctm, tm;
642 int pdimno = pdim - state.pagedims;
643
644 if (pdf_specifics (state.ctx, state.doc)) {
645 trimctm ((pdf_page *) fzpage, pdimno);
646 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
647 }
648 else {
649 fz_translate (&tm, -pdim->mediabox.x0, -pdim->mediabox.y0);
650 fz_concat (&ctm, &tm, &pdim->ctm);
651 }
652 return ctm;
653 }
654
655 static fz_matrix pagectm (struct page *page)
656 {
657 return pagectm1 (page->fzpage, &state.pagedims[page->pdimno]);
658 }
659
660 static void *loadpage (int pageno, int pindex)
661 {
662 fz_device *dev;
663 struct page *page;
664
665 page = calloc (sizeof (struct page), 1);
666 if (!page) {
667 err (1, "calloc page %d", pageno);
668 }
669
670 page->dlist = fz_new_display_list (state.ctx);
671 dev = fz_new_list_device (state.ctx, page->dlist);
672 fz_try (state.ctx) {
673 page->fzpage = fz_load_page (state.ctx, state.doc, pageno);
674 fz_run_page (state.ctx, page->fzpage, dev,
675 &fz_identity, NULL);
676 }
677 fz_catch (state.ctx) {
678 page->fzpage = NULL;
679 }
680 fz_drop_device (state.ctx, dev);
681
682 page->pdimno = pindex;
683 page->pageno = pageno;
684 page->sgen = state.gen;
685 page->agen = state.gen;
686 page->tgen = state.gen;
687 return page;
688 }
689
690 static struct tile *alloctile (int h)
691 {
692 int i;
693 int slicecount;
694 size_t tilesize;
695 struct tile *tile;
696
697 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
698 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
699 tile = calloc (tilesize, 1);
700 if (!tile) {
701 err (1, "cannot allocate tile (%" FMT_s " bytes)", tilesize);
702 }
703 for (i = 0; i < slicecount; ++i) {
704 int sh = MIN (h, state.sliceheight);
705 tile->slices[i].h = sh;
706 tile->slices[i].texindex = -1;
707 h -= sh;
708 }
709 tile->slicecount = slicecount;
710 tile->sliceheight = state.sliceheight;
711 return tile;
712 }
713
714 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
715 struct pbo *pbo)
716 {
717 fz_rect rect;
718 fz_irect bbox;
719 fz_matrix ctm;
720 fz_device *dev;
721 struct tile *tile;
722 struct pagedim *pdim;
723
724 tile = alloctile (h);
725 pdim = &state.pagedims[page->pdimno];
726
727 bbox = pdim->bounds;
728 bbox.x0 += x;
729 bbox.y0 += y;
730 bbox.x1 = bbox.x0 + w;
731 bbox.y1 = bbox.y0 + h;
732
733 if (state.pig) {
734 if (state.pig->w == w
735 && state.pig->h == h
736 && state.pig->colorspace == state.colorspace) {
737 tile->pixmap = state.pig;
738 tile->pixmap->x = bbox.x0;
739 tile->pixmap->y = bbox.y0;
740 }
741 else {
742 fz_drop_pixmap (state.ctx, state.pig);
743 }
744 state.pig = NULL;
745 }
746 if (!tile->pixmap) {
747 if (pbo) {
748 tile->pixmap =
749 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
750 &bbox, pbo->ptr);
751 tile->pbo = pbo;
752 }
753 else {
754 tile->pixmap =
755 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox);
756 }
757 }
758
759 tile->w = w;
760 tile->h = h;
761 clearpixmap (tile->pixmap);
762
763 dev = fz_new_draw_device (state.ctx, tile->pixmap);
764 ctm = pagectm (page);
765 fz_rect_from_irect (&rect, &bbox);
766 fz_run_display_list (state.ctx, page->dlist, dev, &ctm, &rect, NULL);
767 fz_drop_device (state.ctx, dev);
768
769 return tile;
770 }
771
772 #ifdef CACHE_PAGEREFS
773 /* modified mupdf/source/pdf/pdf-page.c:pdf_lookup_page_loc_imp
774 thanks to Robin Watts */
775 static void
776 pdf_collect_pages(pdf_document *doc, pdf_obj *node)
777 {
778 fz_context *ctx = state.ctx; /* doc->ctx; */
779 pdf_obj *kids;
780 int i, len;
781
782 if (state.pdflut.idx == state.pagecount) return;
783
784 kids = pdf_dict_gets (ctx, node, "Kids");
785 len = pdf_array_len (ctx, kids);
786
787 if (len == 0)
788 fz_throw (ctx, FZ_ERROR_GENERIC, "Malformed pages tree");
789
790 if (pdf_mark_obj (ctx, node))
791 fz_throw (ctx, FZ_ERROR_GENERIC, "cycle in page tree");
792 for (i = 0; i < len; i++) {
793 pdf_obj *kid = pdf_array_get (ctx, kids, i);
794 char *type = pdf_to_name (ctx, pdf_dict_gets (ctx, kid, "Type"));
795 if (*type
796 ? !strcmp (type, "Pages")
797 : pdf_dict_gets (ctx, kid, "Kids")
798 && !pdf_dict_gets (ctx, kid, "MediaBox")) {
799 pdf_collect_pages (doc, kid);
800 }
801 else {
802 if (*type
803 ? strcmp (type, "Page") != 0
804 : !pdf_dict_gets (ctx, kid, "MediaBox"))
805 fz_warn (ctx, "non-page object in page tree (%s)", type);
806 state.pdflut.objs[state.pdflut.idx++] = pdf_keep_obj (ctx, kid);
807 }
808 }
809 pdf_unmark_obj (ctx, node);
810 }
811
812 static void
813 pdf_load_page_objs (pdf_document *doc)
814 {
815 pdf_obj *root = pdf_dict_gets (state.ctx,
816 pdf_trailer (state.ctx, doc), "Root");
817 pdf_obj *node = pdf_dict_gets (state.ctx, root, "Pages");
818
819 if (!node)
820 fz_throw (state.ctx, FZ_ERROR_GENERIC, "cannot find page tree");
821
822 state.pdflut.idx = 0;
823 pdf_collect_pages (doc, node);
824 }
825 #endif
826
827 static void initpdims (int wthack)
828 {
829 double start, end;
830 FILE *trimf = NULL;
831 fz_rect rootmediabox;
832 int pageno, trim, show;
833 int trimw = 0, cxcount;
834 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
835
836 fz_var (trimw);
837 fz_var (cxcount);
838 start = now ();
839
840 if (state.trimmargins && state.trimcachepath) {
841 trimf = fopen (state.trimcachepath, "rb");
842 if (!trimf) {
843 trimf = fopen (state.trimcachepath, "wb");
844 trimw = 1;
845 }
846 }
847
848 if (state.trimmargins || pdf || !state.cxack)
849 cxcount = state.pagecount;
850 else
851 cxcount = MIN (state.pagecount, 1);
852
853 if (pdf) {
854 pdf_obj *obj;
855 obj = pdf_dict_getp (state.ctx, pdf_trailer (state.ctx, pdf),
856 "Root/Pages/MediaBox");
857 pdf_to_rect (state.ctx, obj, &rootmediabox);
858 }
859
860 #ifdef CACHE_PAGEREFS
861 if (pdf && (!state.pdflut.objs || state.pdflut.pdf != pdf)) {
862 state.pdflut.objs = calloc (sizeof (*state.pdflut.objs), cxcount);
863 if (!state.pdflut.objs) {
864 err (1, "malloc pageobjs %zu %d %zu failed",
865 sizeof (*state.pdflut.objs), cxcount,
866 sizeof (*state.pdflut.objs) * cxcount);
867 }
868 state.pdflut.count = cxcount;
869 pdf_load_page_objs (pdf);
870 state.pdflut.pdf = pdf;
871 }
872 #endif
873
874 for (pageno = 0; pageno < cxcount; ++pageno) {
875 int rotate = 0;
876 struct pagedim *p;
877 fz_rect mediabox;
878
879 if (pdf) {
880 pdf_obj *pageref, *pageobj;
881
882 #ifdef CACHE_PAGEREFS
883 pageref = state.pdflut.objs[pageno];
884 #else
885 pageref = pdf_lookup_page_obj (state.ctx, pdf, pageno);
886 #endif
887 pageobj = pdf_resolve_indirect (state.ctx, pageref);
888
889 if (state.trimmargins) {
890 fz_context *ctx = state.ctx;
891 pdf_obj *obj;
892 pdf_page *page;
893
894 fz_try (state.ctx) {
895 page = pdf_load_page (ctx, pdf, pageno);
896 obj = pdf_dict_gets (ctx, pageobj, "llpp.TrimBox");
897 trim = state.trimanew || !obj;
898 if (trim) {
899 fz_rect rect;
900 fz_matrix ctm;
901 fz_device *dev;
902
903 dev = fz_new_bbox_device (ctx, &rect);
904 dev->hints |= FZ_IGNORE_SHADE;
905 fz_invert_matrix (&ctm, &page->ctm);
906 pdf_run_page (ctx, page, dev, &fz_identity, NULL);
907 fz_drop_device (ctx, dev);
908
909 rect.x0 += state.trimfuzz.x0;
910 rect.x1 += state.trimfuzz.x1;
911 rect.y0 += state.trimfuzz.y0;
912 rect.y1 += state.trimfuzz.y1;
913 fz_transform_rect (&rect, &ctm);
914 fz_intersect_rect (&rect, &page->mediabox);
915
916 if (fz_is_empty_rect (&rect)) {
917 mediabox = page->mediabox;
918 }
919 else {
920 mediabox = rect;
921 }
922
923 obj = pdf_new_array (ctx, pdf, 4);
924 pdf_array_push (ctx, obj, pdf_new_real (state.ctx, pdf,
925 mediabox.x0));
926 pdf_array_push (ctx, obj, pdf_new_real (state.ctx, pdf,
927 mediabox.y0));
928 pdf_array_push (ctx, obj, pdf_new_real (state.ctx, pdf,
929 mediabox.x1));
930 pdf_array_push (ctx, obj, pdf_new_real (state.ctx, pdf,
931 mediabox.y1));
932 pdf_dict_puts (state.ctx, pageobj, "llpp.TrimBox", obj);
933 }
934 else {
935 mediabox.x0 = pdf_to_real (ctx,
936 pdf_array_get (ctx, obj, 0));
937 mediabox.y0 = pdf_to_real (ctx,
938 pdf_array_get (ctx, obj, 1));
939 mediabox.x1 = pdf_to_real (ctx,
940 pdf_array_get (ctx, obj, 2));
941 mediabox.y1 = pdf_to_real (ctx,
942 pdf_array_get (ctx, obj, 3));
943 }
944
945 rotate = page->rotate;
946 fz_drop_page (ctx, &page->super);
947
948 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
949 if (show) {
950 printd ("progress %f Trimming %d",
951 (double) (pageno + 1) / state.pagecount,
952 pageno + 1);
953 }
954 }
955 fz_catch (state.ctx) {
956 fprintf (stderr, "failed to load page %d\n", pageno+1);
957 }
958 }
959 else {
960 int empty = 0;
961 fz_rect cropbox;
962
963 pdf_to_rect (state.ctx,
964 pdf_dict_gets (state.ctx, pageobj, "MediaBox"),
965 &mediabox);
966 if (fz_is_empty_rect (&mediabox)) {
967 mediabox.x0 = 0;
968 mediabox.y0 = 0;
969 mediabox.x1 = 612;
970 mediabox.y1 = 792;
971 empty = 1;
972 }
973
974 pdf_to_rect (state.ctx,
975 pdf_dict_gets (state.ctx, pageobj, "CropBox"),
976 &cropbox);
977 if (!fz_is_empty_rect (&cropbox)) {
978 if (empty) {
979 mediabox = cropbox;
980 }
981 else {
982 fz_intersect_rect (&mediabox, &cropbox);
983 }
984 }
985 else {
986 if (empty) {
987 if (fz_is_empty_rect (&rootmediabox)) {
988 fprintf (stderr,
989 "cannot find page size for page %d\n",
990 pageno+1);
991 }
992 else {
993 mediabox = rootmediabox;
994 }
995 }
996 }
997 rotate = pdf_to_int (state.ctx,
998 pdf_dict_gets (state.ctx,
999 pageobj, "Rotate"));
1000 }
1001 }
1002 else {
1003 if (state.trimmargins && trimw) {
1004 fz_page *page;
1005
1006 fz_try (state.ctx) {
1007 page = fz_load_page (state.ctx, state.doc, pageno);
1008 fz_bound_page (state.ctx, page, &mediabox);
1009 rotate = 0;
1010 if (state.trimmargins) {
1011 fz_rect rect;
1012 fz_device *dev;
1013
1014 dev = fz_new_bbox_device (state.ctx, &rect);
1015 dev->hints |= FZ_IGNORE_SHADE;
1016 fz_run_page (state.ctx, page, dev,
1017 &fz_identity, NULL);
1018 fz_drop_device (state.ctx, dev);
1019
1020 rect.x0 += state.trimfuzz.x0;
1021 rect.x1 += state.trimfuzz.x1;
1022 rect.y0 += state.trimfuzz.y0;
1023 rect.y1 += state.trimfuzz.y1;
1024 fz_intersect_rect (&rect, &mediabox);
1025
1026 if (!fz_is_empty_rect (&rect)) {
1027 mediabox = rect;
1028 }
1029 }
1030 fz_drop_page (state.ctx, page);
1031 if (!state.cxack) {
1032 printd ("progress %f loading %d",
1033 (double) (pageno + 1) / state.pagecount,
1034 pageno + 1);
1035 }
1036 }
1037 fz_catch (state.ctx) {
1038 }
1039 if (trimf) {
1040 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1041 if (n - 1) {
1042 err (1, "fwrite trim mediabox");
1043 }
1044 }
1045 }
1046 else {
1047 if (trimf) {
1048 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1049 if (n - 1) {
1050 err (1, "fread trim mediabox %d", pageno);
1051 }
1052 }
1053 else {
1054 fz_page *page;
1055 fz_try (state.ctx) {
1056 page = fz_load_page (state.ctx,
1057 state.doc, pageno);
1058 fz_bound_page (state.ctx, page, &mediabox);
1059 fz_drop_page (state.ctx, page);
1060
1061 show = !state.trimmargins && pageno % 20 == 0;
1062 if (show) {
1063 printd ("progress %f Gathering dimensions %d",
1064 (double) (pageno) / state.pagecount,
1065 pageno);
1066 }
1067 }
1068 fz_catch (state.ctx) {
1069 fprintf (stderr, "failed to load page %d\n", pageno);
1070 }
1071 }
1072 }
1073 }
1074
1075 if (state.pagedimcount == 0
1076 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1077 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1078 size_t size;
1079
1080 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1081 state.pagedims = realloc (state.pagedims, size);
1082 if (!state.pagedims) {
1083 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1084 size, state.pagedimcount + 1);
1085 }
1086
1087 p = &state.pagedims[state.pagedimcount++];
1088 p->rotate = rotate;
1089 p->mediabox = mediabox;
1090 p->pageno = pageno;
1091 }
1092 }
1093 end = now ();
1094 if (!wthack) {
1095 printd ("progress 1 %s %d pages in %f seconds",
1096 state.trimmargins ? "Trimmed" : "Processed",
1097 state.pagecount, end - start);
1098 }
1099 state.trimanew = 0;
1100 if (trimf) {
1101 if (fclose (trimf)) {
1102 err (1, "fclose");
1103 }
1104 }
1105 }
1106
1107 static void layout (void)
1108 {
1109 int pindex;
1110 fz_rect box;
1111 fz_matrix ctm, rm;
1112 struct pagedim *p = p;
1113 double zw, w, maxw = 0.0, zoom = zoom;
1114
1115 if (state.pagedimcount == 0) return;
1116
1117 switch (state.fitmodel) {
1118 case FitProportional:
1119 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1120 double x0, x1;
1121
1122 p = &state.pagedims[pindex];
1123 fz_rotate (&rm, p->rotate + state.rotate);
1124 box = p->mediabox;
1125 fz_transform_rect (&box, &rm);
1126
1127 x0 = MIN (box.x0, box.x1);
1128 x1 = MAX (box.x0, box.x1);
1129
1130 w = x1 - x0;
1131 maxw = MAX (w, maxw);
1132 zoom = state.w / maxw;
1133 }
1134 break;
1135
1136 case FitPage:
1137 maxw = state.w;
1138 break;
1139
1140 case FitWidth:
1141 break;
1142
1143 default:
1144 ARSERT (0 && state.fitmodel);
1145 }
1146
1147 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1148 fz_rect rect;
1149 fz_matrix tm, sm;
1150
1151 p = &state.pagedims[pindex];
1152 fz_rotate (&ctm, state.rotate);
1153 fz_rotate (&rm, p->rotate + state.rotate);
1154 box = p->mediabox;
1155 fz_transform_rect (&box, &rm);
1156 w = box.x1 - box.x0;
1157 switch (state.fitmodel) {
1158 case FitProportional:
1159 p->left = ((maxw - w) * zoom) / 2.0;
1160 break;
1161 case FitPage:
1162 {
1163 double zh, h;
1164 zw = maxw / w;
1165 h = box.y1 - box.y0;
1166 zh = state.h / h;
1167 zoom = MIN (zw, zh);
1168 p->left = (maxw - (w * zoom)) / 2.0;
1169 }
1170 break;
1171 case FitWidth:
1172 p->left = 0;
1173 zoom = state.w / w;
1174 break;
1175 }
1176
1177 fz_scale (&p->zoomctm, zoom, zoom);
1178 fz_concat (&ctm, &p->zoomctm, &ctm);
1179
1180 fz_rotate (&rm, p->rotate);
1181 p->pagebox = p->mediabox;
1182 fz_transform_rect (&p->pagebox, &rm);
1183 p->pagebox.x1 -= p->pagebox.x0;
1184 p->pagebox.y1 -= p->pagebox.y0;
1185 p->pagebox.x0 = 0;
1186 p->pagebox.y0 = 0;
1187 rect = p->pagebox;
1188 fz_transform_rect (&rect, &ctm);
1189 fz_round_rect (&p->bounds, &rect);
1190 p->ctm = ctm;
1191
1192 fz_translate (&tm, 0, -p->mediabox.y1);
1193 fz_scale (&sm, zoom, -zoom);
1194 fz_concat (&ctm, &tm, &sm);
1195 fz_concat (&p->lctm, &ctm, &rm);
1196
1197 p->tctmready = 0;
1198 }
1199
1200 do {
1201 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1202 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1203 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1204 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1205 int boundw = x1 - x0;
1206 int boundh = y1 - y0;
1207
1208 printd ("pdim %d %d %d %d", p->pageno, boundw, boundh, p->left);
1209 } while (p-- != state.pagedims);
1210 }
1211
1212 static
1213 struct anchor { int n; int x; int y; int w; int h; }
1214 desttoanchor (fz_link_dest *dest)
1215 {
1216 int i;
1217 struct anchor a;
1218 struct pagedim *pdim = state.pagedims;
1219
1220 a.n = -1;
1221 a.x = 0;
1222 a.y = 0;
1223 for (i = 0; i < state.pagedimcount; ++i) {
1224 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1225 break;
1226 pdim = &state.pagedims[i];
1227 }
1228 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1229 fz_point p;
1230 if (dest->ld.gotor.flags & fz_link_flag_l_valid)
1231 p.x = dest->ld.gotor.lt.x;
1232 else
1233 p.x = 0.0;
1234 p.y = dest->ld.gotor.lt.y;
1235 fz_transform_point (&p, &pdim->lctm);
1236 a.x = p.x;
1237 a.y = p.y;
1238 }
1239 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1240 double x0, x1, y0, y1;
1241
1242 x0 = MIN (pdim->bounds.x0, pdim->bounds.x1);
1243 x1 = MAX (pdim->bounds.x0, pdim->bounds.x1);
1244 a.w = x1 - x0;
1245 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1246 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1247 a.h = y1 - y0;
1248 a.n = dest->ld.gotor.page;
1249 }
1250 return a;
1251 }
1252
1253 static void recurse_outline (fz_outline *outline, int level)
1254 {
1255 while (outline) {
1256 switch (outline->dest.kind) {
1257 case FZ_LINK_GOTO:
1258 {
1259 struct anchor a = desttoanchor (&outline->dest);
1260
1261 if (a.n >= 0) {
1262 printd ("o %d %d %d %d %s",
1263 level, a.n, a.y, a.h, outline->title);
1264 }
1265 }
1266 break;
1267
1268 case FZ_LINK_URI:
1269 printd ("ou %d %" FMT_s " %s %s", level,
1270 strlen (outline->title), outline->title,
1271 outline->dest.ld.uri.uri);
1272 break;
1273
1274 case FZ_LINK_NONE:
1275 printd ("on %d %s", level, outline->title);
1276 break;
1277
1278 default:
1279 printd ("emsg Unhandled outline kind %d for %s\n",
1280 outline->dest.kind, outline->title);
1281 break;
1282 }
1283 if (outline->down) {
1284 recurse_outline (outline->down, level + 1);
1285 }
1286 outline = outline->next;
1287 }
1288 }
1289
1290 static void process_outline (void)
1291 {
1292 fz_outline *outline;
1293
1294 if (!state.needoutline || !state.pagedimcount) return;
1295
1296 state.needoutline = 0;
1297 outline = fz_load_outline (state.ctx, state.doc);
1298 if (outline) {
1299 recurse_outline (outline, 0);
1300 fz_drop_outline (state.ctx, outline);
1301 }
1302 }
1303
1304 static char *strofspan (fz_text_span *span)
1305 {
1306 char *p;
1307 char utf8[10];
1308 fz_text_char *ch;
1309 size_t size = 0, cap = 80;
1310
1311 p = malloc (cap + 1);
1312 if (!p) return NULL;
1313
1314 for (ch = span->text; ch < span->text + span->len; ++ch) {
1315 int n = fz_runetochar (utf8, ch->c);
1316 if (size + n > cap) {
1317 cap *= 2;
1318 p = realloc (p, cap + 1);
1319 if (!p) return NULL;
1320 }
1321
1322 memcpy (p + size, utf8, n);
1323 size += n;
1324 }
1325 p[size] = 0;
1326 return p;
1327 }
1328
1329 static int matchspan (regex_t *re, fz_text_span *span,
1330 int stop, int pageno, double start)
1331 {
1332 int ret;
1333 char *p;
1334 regmatch_t rm;
1335 int a, b, c;
1336 fz_rect sb, eb;
1337 fz_point p1, p2, p3, p4;
1338
1339 p = strofspan (span);
1340 if (!p) return -1;
1341
1342 ret = regexec (re, p, 1, &rm, 0);
1343 if (ret) {
1344 free (p);
1345 if (ret != REG_NOMATCH) {
1346 size_t size;
1347 char errbuf[80];
1348 size = regerror (ret, re, errbuf, sizeof (errbuf));
1349 printd ("msg regexec error `%.*s'",
1350 (int) size, errbuf);
1351 return -1;
1352 }
1353 return 0;
1354 }
1355 else {
1356 int l = span->len;
1357
1358 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1359 c += fz_runelen (span->text[a].c);
1360 }
1361 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1362 c += fz_runelen (span->text[b].c);
1363 }
1364
1365 if (fz_runelen (span->text[b].c) > 1) {
1366 b = MAX (0, b-1);
1367 }
1368
1369 fz_text_char_bbox (state.ctx, &sb, span, a);
1370 fz_text_char_bbox (state.ctx, &eb, span, b);
1371
1372 p1.x = sb.x0;
1373 p1.y = sb.y0;
1374 p2.x = eb.x1;
1375 p2.y = sb.y0;
1376 p3.x = eb.x1;
1377 p3.y = eb.y1;
1378 p4.x = sb.x0;
1379 p4.y = eb.y1;
1380
1381 if (!stop) {
1382 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1383 pageno, 1,
1384 p1.x, p1.y,
1385 p2.x, p2.y,
1386 p3.x, p3.y,
1387 p4.x, p4.y);
1388
1389 printd ("progress 1 found at %d `%.*s' in %f sec",
1390 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1391 now () - start);
1392 }
1393 else {
1394 printd ("match %d %d %f %f %f %f %f %f %f %f",
1395 pageno, 2,
1396 p1.x, p1.y,
1397 p2.x, p2.y,
1398 p3.x, p3.y,
1399 p4.x, p4.y);
1400 }
1401 free (p);
1402 return 1;
1403 }
1404 }
1405
1406 static int compareblocks (const void *l, const void *r)
1407 {
1408 fz_text_block const *ls = l;
1409 fz_text_block const *rs = r;
1410 return ls->bbox.y0 - rs->bbox.y0;
1411 }
1412
1413 /* wishful thinking function */
1414 static void search (regex_t *re, int pageno, int y, int forward)
1415 {
1416 int i, j;
1417 fz_device *tdev;
1418 fz_text_page *text;
1419 fz_text_sheet *sheet;
1420 struct pagedim *pdim, *pdimprev;
1421 int stop = 0, niters = 0;
1422 double start, end;
1423 fz_page *page;
1424
1425 start = now ();
1426 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1427 if (niters++ == 5) {
1428 niters = 0;
1429 if (hasdata ()) {
1430 printd ("progress 1 attention requested aborting search at %d",
1431 pageno);
1432 stop = 1;
1433 }
1434 else {
1435 printd ("progress %f searching in page %d",
1436 (double) (pageno + 1) / state.pagecount,
1437 pageno);
1438 }
1439 }
1440 pdimprev = NULL;
1441 for (i = 0; i < state.pagedimcount; ++i) {
1442 pdim = &state.pagedims[i];
1443 if (pdim->pageno == pageno) {
1444 goto found;
1445 }
1446 if (pdim->pageno > pageno) {
1447 pdim = pdimprev;
1448 goto found;
1449 }
1450 pdimprev = pdim;
1451 }
1452 pdim = pdimprev;
1453 found:
1454
1455 sheet = fz_new_text_sheet (state.ctx);
1456 text = fz_new_text_page (state.ctx);
1457 tdev = fz_new_text_device (state.ctx, sheet, text);
1458
1459 page = fz_load_page (state.ctx, state.doc, pageno);
1460 {
1461 fz_matrix ctm = pagectm1 (page, pdim);
1462 fz_run_page (state.ctx, page, tdev, &ctm, NULL);
1463 }
1464
1465 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1466 fz_drop_device (state.ctx, tdev);
1467
1468 for (j = 0; j < text->len; ++j) {
1469 int k;
1470 fz_page_block *pb;
1471 fz_text_block *block;
1472
1473 pb = &text->blocks[forward ? j : text->len - 1 - j];
1474 if (pb->type != FZ_PAGE_BLOCK_TEXT) continue;
1475 block = pb->u.text;
1476
1477 for (k = 0; k < block->len; ++k) {
1478 fz_text_line *line;
1479 fz_text_span *span;
1480
1481 if (forward) {
1482 line = &block->lines[k];
1483 if (line->bbox.y0 < y + 1) continue;
1484 }
1485 else {
1486 line = &block->lines[block->len - 1 - k];
1487 if (line->bbox.y0 > y - 1) continue;
1488 }
1489
1490 for (span = line->first_span; span; span = span->next) {
1491 switch (matchspan (re, span, stop, pageno, start)) {
1492 case 0: break;
1493 case 1: stop = 1; break;
1494 case -1: stop = 1; goto endloop;
1495 }
1496 }
1497 }
1498 }
1499 if (forward) {
1500 pageno += 1;
1501 y = 0;
1502 }
1503 else {
1504 pageno -= 1;
1505 y = INT_MAX;
1506 }
1507 endloop:
1508 fz_drop_text_page (state.ctx, text);
1509 fz_drop_text_sheet (state.ctx, sheet);
1510 fz_drop_page (state.ctx, page);
1511 }
1512 end = now ();
1513 if (!stop) {
1514 printd ("progress 1 no matches %f sec", end - start);
1515 }
1516 printd ("clearrects");
1517 }
1518
1519 static void set_tex_params (int colorspace)
1520 {
1521 union {
1522 unsigned char b;
1523 unsigned int s;
1524 } endianness = {1};
1525
1526 switch (colorspace) {
1527 case 0:
1528 state.texiform = GL_RGBA8;
1529 state.texform = GL_RGBA;
1530 state.texty = GL_UNSIGNED_BYTE;
1531 state.colorspace = fz_device_rgb (state.ctx);
1532 break;
1533 case 1:
1534 state.texiform = GL_RGBA8;
1535 state.texform = GL_BGRA;
1536 state.texty = endianness.s > 1
1537 ? GL_UNSIGNED_INT_8_8_8_8
1538 : GL_UNSIGNED_INT_8_8_8_8_REV;
1539 state.colorspace = fz_device_bgr (state.ctx);
1540 break;
1541 case 2:
1542 state.texiform = GL_LUMINANCE_ALPHA;
1543 state.texform = GL_LUMINANCE_ALPHA;
1544 state.texty = GL_UNSIGNED_BYTE;
1545 state.colorspace = fz_device_gray (state.ctx);
1546 break;
1547 default:
1548 errx (1, "invalid colorspce %d", colorspace);
1549 }
1550 }
1551
1552 static void realloctexts (int texcount)
1553 {
1554 size_t size;
1555
1556 if (texcount == state.texcount) return;
1557
1558 if (texcount < state.texcount) {
1559 glDeleteTextures (state.texcount - texcount,
1560 state.texids + texcount);
1561 }
1562
1563 size = texcount * sizeof (*state.texids);
1564 state.texids = realloc (state.texids, size);
1565 if (!state.texids) {
1566 err (1, "realloc texids %" FMT_s, size);
1567 }
1568
1569 size = texcount * sizeof (*state.texowners);
1570 state.texowners = realloc (state.texowners, size);
1571 if (!state.texowners) {
1572 err (1, "realloc texowners %" FMT_s, size);
1573 }
1574 if (texcount > state.texcount) {
1575 int i;
1576
1577 glGenTextures (texcount - state.texcount,
1578 state.texids + state.texcount);
1579 for (i = state.texcount; i < texcount; ++i) {
1580 state.texowners[i].w = -1;
1581 state.texowners[i].slice = NULL;
1582 }
1583 }
1584 state.texcount = texcount;
1585 state.texindex = 0;
1586 }
1587
1588 static char *mbtoutf8 (char *s)
1589 {
1590 char *p, *r;
1591 wchar_t *tmp;
1592 size_t i, ret, len;
1593
1594 len = mbstowcs (NULL, s, strlen (s));
1595 if (len == 0) {
1596 return s;
1597 }
1598 else {
1599 if (len == (size_t) -1) {
1600 return s;
1601 }
1602 }
1603
1604 tmp = malloc (len * sizeof (wchar_t));
1605 if (!tmp) {
1606 return s;
1607 }
1608
1609 ret = mbstowcs (tmp, s, len);
1610 if (ret == (size_t) -1) {
1611 free (tmp);
1612 return s;
1613 }
1614
1615 len = 0;
1616 for (i = 0; i < ret; ++i) {
1617 len += fz_runelen (tmp[i]);
1618 }
1619
1620 p = r = malloc (len + 1);
1621 if (!r) {
1622 free (tmp);
1623 return s;
1624 }
1625
1626 for (i = 0; i < ret; ++i) {
1627 p += fz_runetochar (p, tmp[i]);
1628 }
1629 *p = 0;
1630 free (tmp);
1631 return r;
1632 }
1633
1634 CAMLprim value ml_mbtoutf8 (value s_v)
1635 {
1636 CAMLparam1 (s_v);
1637 CAMLlocal1 (ret_v);
1638 char *s, *r;
1639
1640 s = String_val (s_v);
1641 r = mbtoutf8 (s);
1642 if (r == s) {
1643 ret_v = s_v;
1644 }
1645 else {
1646 ret_v = caml_copy_string (r);
1647 free (r);
1648 }
1649 CAMLreturn (ret_v);
1650 }
1651
1652 static void * mainloop (void UNUSED_ATTR *unused)
1653 {
1654 char *p = NULL;
1655 int len, ret, oldlen = 0;
1656
1657 fz_var (p);
1658 fz_var (oldlen);
1659 for (;;) {
1660 len = readlen ();
1661 if (len == 0) {
1662 errx (1, "readlen returned 0");
1663 }
1664
1665 if (oldlen < len + 1) {
1666 p = realloc (p, len + 1);
1667 if (!p) {
1668 err (1, "realloc %d failed", len + 1);
1669 }
1670 oldlen = len + 1;
1671 }
1672 readdata (p, len);
1673 p[len] = 0;
1674
1675 if (!strncmp ("open", p, 4)) {
1676 int wthack, off, ok = 0;
1677 char *password;
1678 char *filename;
1679 char *utf8filename;
1680 size_t filenamelen;
1681
1682 fz_var (ok);
1683 ret = sscanf (p + 5, " %d %d %n", &wthack, &state.cxack, &off);
1684 if (ret != 2) {
1685 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1686 }
1687
1688 filename = p + 5 + off;
1689 filenamelen = strlen (filename);
1690 password = filename + filenamelen + 1;
1691
1692 lock ("open");
1693 fz_try (state.ctx) {
1694 ok = openxref (filename, password);
1695 }
1696 fz_catch (state.ctx) {
1697 utf8filename = mbtoutf8 (filename);
1698 printd ("msg Could not open %s", utf8filename);
1699 }
1700 if (ok) {
1701 pdfinfo ();
1702 initpdims (wthack);
1703 }
1704 unlock ("open");
1705
1706 if (ok) {
1707 if (!wthack) {
1708 utf8filename = mbtoutf8 (filename);
1709 printd ("msg Opened %s (press h/F1 to get help)",
1710 utf8filename);
1711 if (utf8filename != filename) {
1712 free (utf8filename);
1713 }
1714 }
1715 state.needoutline = 1;
1716 }
1717 }
1718 else if (!strncmp ("cs", p, 2)) {
1719 int i, colorspace;
1720
1721 ret = sscanf (p + 2, " %d", &colorspace);
1722 if (ret != 1) {
1723 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1724 }
1725 lock ("cs");
1726 set_tex_params (colorspace);
1727 for (i = 0; i < state.texcount; ++i) {
1728 state.texowners[i].w = -1;
1729 state.texowners[i].slice = NULL;
1730 }
1731 unlock ("cs");
1732 }
1733 else if (!strncmp ("freepage", p, 8)) {
1734 void *ptr;
1735
1736 ret = sscanf (p + 8, " %" SCN_ptr, SCN_ptr_cast (&ptr));
1737 if (ret != 1) {
1738 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1739 }
1740 freepage (ptr);
1741 }
1742 else if (!strncmp ("freetile", p, 8)) {
1743 void *ptr;
1744
1745 ret = sscanf (p + 8, " %" SCN_ptr, SCN_ptr_cast (&ptr));
1746 if (ret != 1) {
1747 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1748 }
1749 freetile (ptr);
1750 }
1751 else if (!strncmp ("search", p, 6)) {
1752 int icase, pageno, y, len2, forward;
1753 char *pattern;
1754 regex_t re;
1755
1756 ret = sscanf (p + 6, " %d %d %d %d,%n",
1757 &icase, &pageno, &y, &forward, &len2);
1758 if (ret != 4) {
1759 errx (1, "malformed search `%s' ret=%d", p, ret);
1760 }
1761
1762 pattern = p + 6 + len2;
1763 ret = regcomp (&re, pattern,
1764 REG_EXTENDED | (icase ? REG_ICASE : 0));
1765 if (ret) {
1766 char errbuf[80];
1767 size_t size;
1768
1769 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1770 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1771 }
1772 else {
1773 search (&re, pageno, y, forward);
1774 regfree (&re);
1775 }
1776 }
1777 else if (!strncmp ("geometry", p, 8)) {
1778 int w, h, fitmodel;
1779
1780 printd ("clear");
1781 ret = sscanf (p + 8, " %d %d %d", &w, &h, &fitmodel);
1782 if (ret != 3) {
1783 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1784 }
1785
1786 lock ("geometry");
1787 state.h = h;
1788 if (w != state.w) {
1789 int i;
1790 state.w = w;
1791 for (i = 0; i < state.texcount; ++i) {
1792 state.texowners[i].slice = NULL;
1793 }
1794 }
1795 state.fitmodel = fitmodel;
1796 layout ();
1797 process_outline ();
1798
1799 state.gen++;
1800 unlock ("geometry");
1801 printd ("continue %d", state.pagecount);
1802 }
1803 else if (!strncmp ("reqlayout", p, 9)) {
1804 char *nameddest;
1805 int rotate, off, h;
1806 unsigned int fitmodel;
1807 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
1808
1809 printd ("clear");
1810 ret = sscanf (p + 9, " %d %u %d %n",
1811 &rotate, &fitmodel, &h, &off);
1812 if (ret != 3) {
1813 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1814 }
1815 lock ("reqlayout");
1816 if (state.rotate != rotate || state.fitmodel != fitmodel) {
1817 state.gen += 1;
1818 }
1819 state.rotate = rotate;
1820 state.fitmodel = fitmodel;
1821 state.h = h;
1822 layout ();
1823 process_outline ();
1824
1825 nameddest = p + 9 + off;
1826 if (pdf && nameddest && *nameddest) {
1827 struct anchor a;
1828 fz_link_dest dest;
1829 pdf_obj *needle, *obj;
1830
1831 needle = pdf_new_string (state.ctx, pdf, nameddest,
1832 strlen (nameddest));
1833 obj = pdf_lookup_dest (state.ctx, pdf, needle);
1834 if (obj) {
1835 dest = pdf_parse_link_dest (state.ctx, pdf,
1836 FZ_LINK_GOTO, obj);
1837
1838 a = desttoanchor (&dest);
1839 if (a.n >= 0) {
1840 printd ("a %d %d %d", a.n, a.x, a.y);
1841 }
1842 else {
1843 printd ("emsg failed to parse destination `%s'\n",
1844 nameddest);
1845 }
1846 }
1847 else {
1848 printd ("emsg destination `%s' not found\n",
1849 nameddest);
1850 }
1851 pdf_drop_obj (state.ctx, needle);
1852 }
1853
1854 state.gen++;
1855 unlock ("reqlayout");
1856 printd ("continue %d", state.pagecount);
1857 }
1858 else if (!strncmp ("page", p, 4)) {
1859 double a, b;
1860 struct page *page;
1861 int pageno, pindex;
1862
1863 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1864 if (ret != 2) {
1865 errx (1, "bad page line `%.*s' ret=%d", len, p, ret);
1866 }
1867
1868 lock ("page");
1869 a = now ();
1870 page = loadpage (pageno, pindex);
1871 b = now ();
1872 unlock ("page");
1873
1874 printd ("page %" FMT_ptr " %f", FMT_ptr_cast (page), b - a);
1875 }
1876 else if (!strncmp ("tile", p, 4)) {
1877 int x, y, w, h;
1878 struct page *page;
1879 struct tile *tile;
1880 double a, b;
1881 void *data;
1882
1883 ret = sscanf (p + 4, " %" SCN_ptr " %d %d %d %d %" SCN_ptr,
1884 SCN_ptr_cast (&page), &x, &y, &w, &h,
1885 SCN_ptr_cast (&data));
1886 if (ret != 6) {
1887 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1888 }
1889
1890 lock ("tile");
1891 a = now ();
1892 tile = rendertile (page, x, y, w, h, data);
1893 b = now ();
1894 unlock ("tile");
1895
1896 printd ("tile %d %d %" FMT_ptr " %u %f",
1897 x, y,
1898 FMT_ptr_cast (tile),
1899 tile->w * tile->h * tile->pixmap->n,
1900 b - a);
1901 }
1902 else if (!strncmp ("trimset", p, 7)) {
1903 fz_irect fuzz;
1904 int trimmargins;
1905
1906 ret = sscanf (p + 7, " %d %d %d %d %d",
1907 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1908 if (ret != 5) {
1909 errx (1, "malformed trimset `%.*s' ret=%d", len, p, ret);
1910 }
1911 lock ("trimset");
1912 state.trimmargins = trimmargins;
1913 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1914 state.trimanew = 1;
1915 state.trimfuzz = fuzz;
1916 }
1917 unlock ("trimset");
1918 }
1919 else if (!strncmp ("settrim", p, 7)) {
1920 fz_irect fuzz;
1921 int trimmargins;
1922
1923 ret = sscanf (p + 7, " %d %d %d %d %d",
1924 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1925 if (ret != 5) {
1926 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1927 }
1928 printd ("clear");
1929 lock ("settrim");
1930 state.trimmargins = trimmargins;
1931 state.needoutline = 1;
1932 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1933 state.trimanew = 1;
1934 state.trimfuzz = fuzz;
1935 }
1936 state.pagedimcount = 0;
1937 free (state.pagedims);
1938 state.pagedims = NULL;
1939 initpdims (0);
1940 layout ();
1941 process_outline ();
1942 unlock ("settrim");
1943 printd ("continue %d", state.pagecount);
1944 }
1945 else if (!strncmp ("sliceh", p, 6)) {
1946 int h;
1947
1948 ret = sscanf (p + 6, " %d", &h);
1949 if (ret != 1) {
1950 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1951 }
1952 if (h != state.sliceheight) {
1953 int i;
1954
1955 state.sliceheight = h;
1956 for (i = 0; i < state.texcount; ++i) {
1957 state.texowners[i].w = -1;
1958 state.texowners[i].h = -1;
1959 state.texowners[i].slice = NULL;
1960 }
1961 }
1962 }
1963 else if (!strncmp ("interrupt", p, 9)) {
1964 printd ("vmsg interrupted");
1965 }
1966 else {
1967 errx (1, "unknown command %.*s", len, p);
1968 }
1969 }
1970 return 0;
1971 }
1972
1973 CAMLprim value ml_realloctexts (value texcount_v)
1974 {
1975 CAMLparam1 (texcount_v);
1976 int ok;
1977
1978 if (trylock ("ml_realloctexts")) {
1979 ok = 0;
1980 goto done;
1981 }
1982 realloctexts (Int_val (texcount_v));
1983 ok = 1;
1984 unlock ("ml_realloctexts");
1985
1986 done:
1987 CAMLreturn (Val_bool (ok));
1988 }
1989
1990 static void recti (int x0, int y0, int x1, int y1)
1991 {
1992 GLfloat *v = state.vertices;
1993
1994 glVertexPointer (2, GL_FLOAT, 0, v);
1995 v[0] = x0; v[1] = y0;
1996 v[2] = x1; v[3] = y0;
1997 v[4] = x0; v[5] = y1;
1998 v[6] = x1; v[7] = y1;
1999 glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
2000 }
2001
2002 static void showsel (struct page *page, int ox, int oy)
2003 {
2004 int seen = 0;
2005 fz_irect bbox;
2006 fz_rect rect;
2007 fz_text_line *line;
2008 fz_page_block *pageb;
2009 fz_text_block *block;
2010 struct mark first, last;
2011 unsigned char selcolor[] = {15,15,15,140};
2012
2013 first = page->fmark;
2014 last = page->lmark;
2015
2016 if (!first.span || !last.span) return;
2017
2018 glEnable (GL_BLEND);
2019 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
2020 glColor4ubv (selcolor);
2021
2022 ox += state.pagedims[page->pdimno].bounds.x0;
2023 oy += state.pagedims[page->pdimno].bounds.y0;
2024 for (pageb = page->text->blocks;
2025 pageb < page->text->blocks + page->text->len;
2026 ++pageb) {
2027 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2028 block = pageb->u.text;
2029
2030 for (line = block->lines;
2031 line < block->lines + block->len;
2032 ++line) {
2033 fz_text_span *span;
2034 rect = fz_empty_rect;
2035
2036 for (span = line->first_span; span; span = span->next) {
2037 int i, j, k;
2038 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
2039
2040 j = 0;
2041 k = span->len - 1;
2042
2043 if (span == page->fmark.span && span == page->lmark.span) {
2044 seen = 1;
2045 j = MIN (first.i, last.i);
2046 k = MAX (first.i, last.i);
2047 }
2048 else {
2049 if (span == first.span) {
2050 seen = 1;
2051 j = first.i;
2052 }
2053 else if (span == last.span) {
2054 seen = 1;
2055 k = last.i;
2056 }
2057 }
2058
2059 if (seen) {
2060 for (i = j; i <= k; ++i) {
2061 fz_rect bbox1;
2062 fz_union_rect (&rect,
2063 fz_text_char_bbox (state.ctx, &bbox1,
2064 span, i));
2065 }
2066 fz_round_rect (&bbox, &rect);
2067 lprintf ("%d %d %d %d oy=%d ox=%d\n",
2068 bbox.x0,
2069 bbox.y0,
2070 bbox.x1,
2071 bbox.y1,
2072 oy, ox);
2073
2074 recti (bbox.x0 + ox, bbox.y0 + oy,
2075 bbox.x1 + ox, bbox.y1 + oy);
2076 if (span == last.span) {
2077 goto done;
2078 }
2079 rect = fz_empty_rect;
2080 }
2081 }
2082 }
2083 }
2084 done:
2085 glDisable (GL_BLEND);
2086 }
2087
2088 #include "glfont.c"
2089
2090 static void stipplerect (fz_matrix *m,
2091 fz_point *p1,
2092 fz_point *p2,
2093 fz_point *p3,
2094 fz_point *p4,
2095 GLfloat *texcoords,
2096 GLfloat *vertices)
2097 {
2098 fz_transform_point (p1, m);
2099 fz_transform_point (p2, m);
2100 fz_transform_point (p3, m);
2101 fz_transform_point (p4, m);
2102 {
2103 float w, h, s, t;
2104
2105 w = p2->x - p1->x;
2106 h = p2->y - p1->y;
2107 t = sqrtf (w*w + h*h) * .25f;
2108
2109 w = p3->x - p2->x;
2110 h = p3->y - p2->y;
2111 s = sqrtf (w*w + h*h) * .25f;
2112
2113 texcoords[0] = 0; vertices[0] = p1->x; vertices[1] = p1->y;
2114 texcoords[1] = t; vertices[2] = p2->x; vertices[3] = p2->y;
2115
2116 texcoords[2] = 0; vertices[4] = p2->x; vertices[5] = p2->y;
2117 texcoords[3] = s; vertices[6] = p3->x; vertices[7] = p3->y;
2118
2119 texcoords[4] = 0; vertices[8] = p3->x; vertices[9] = p3->y;
2120 texcoords[5] = t; vertices[10] = p4->x; vertices[11] = p4->y;
2121
2122 texcoords[6] = 0; vertices[12] = p4->x; vertices[13] = p4->y;
2123 texcoords[7] = s; vertices[14] = p1->x; vertices[15] = p1->y;
2124 }
2125 glDrawArrays (GL_LINES, 0, 8);
2126 }
2127
2128 static void highlightlinks (struct page *page, int xoff, int yoff)
2129 {
2130 int i;
2131 fz_matrix ctm, tm, pm;
2132 fz_link *link, *links;
2133 GLfloat *texcoords = state.texcoords;
2134 GLfloat *vertices = state.vertices;
2135
2136 links = fz_load_links (state.ctx, page->fzpage);
2137
2138 glEnable (GL_TEXTURE_1D);
2139 glEnable (GL_BLEND);
2140 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2141 glBindTexture (GL_TEXTURE_1D, state.stid);
2142
2143 xoff -= state.pagedims[page->pdimno].bounds.x0;
2144 yoff -= state.pagedims[page->pdimno].bounds.y0;
2145 fz_translate (&tm, xoff, yoff);
2146 pm = pagectm (page);
2147 fz_concat (&ctm, &pm, &tm);
2148
2149 glTexCoordPointer (1, GL_FLOAT, 0, texcoords);
2150 glVertexPointer (2, GL_FLOAT, 0, vertices);
2151
2152 for (link = links; link; link = link->next) {
2153 fz_point p1, p2, p3, p4;
2154
2155 p1.x = link->rect.x0;
2156 p1.y = link->rect.y0;
2157
2158 p2.x = link->rect.x1;
2159 p2.y = link->rect.y0;
2160
2161 p3.x = link->rect.x1;
2162 p3.y = link->rect.y1;
2163
2164 p4.x = link->rect.x0;
2165 p4.y = link->rect.y1;
2166
2167 switch (link->dest.kind) {
2168 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2169 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2170 case FZ_LINK_LAUNCH: glColor3ub (0, 255, 0); break;
2171 default: glColor3ub (0, 0, 0); break;
2172 }
2173 stipplerect (&ctm, &p1, &p2, &p3, &p4, texcoords, vertices);
2174 }
2175
2176 for (i = 0; i < page->annotcount; ++i) {
2177 fz_point p1, p2, p3, p4;
2178 struct annot *annot = &page->annots[i];
2179
2180 p1.x = annot->bbox.x0;
2181 p1.y = annot->bbox.y0;
2182
2183 p2.x = annot->bbox.x1;
2184 p2.y = annot->bbox.y0;
2185
2186 p3.x = annot->bbox.x1;
2187 p3.y = annot->bbox.y1;
2188
2189 p4.x = annot->bbox.x0;
2190 p4.y = annot->bbox.y1;
2191
2192 glColor3ub (0, 0, 128);
2193 stipplerect (&ctm, &p1, &p2, &p3, &p4, texcoords, vertices);
2194 }
2195
2196 glDisable (GL_BLEND);
2197 glDisable (GL_TEXTURE_1D);
2198 }
2199
2200 static int compareslinks (const void *l, const void *r)
2201 {
2202 struct slink const *ls = l;
2203 struct slink const *rs = r;
2204 if (ls->bbox.y0 == rs->bbox.y0) {
2205 return rs->bbox.x0 - rs->bbox.x0;
2206 }
2207 return ls->bbox.y0 - rs->bbox.y0;
2208 }
2209
2210 static void droptext (struct page *page)
2211 {
2212 if (page->text) {
2213 fz_drop_text_page (state.ctx, page->text);
2214 page->fmark.i = -1;
2215 page->lmark.i = -1;
2216 page->fmark.span = NULL;
2217 page->lmark.span = NULL;
2218 page->text = NULL;
2219 }
2220 if (page->sheet) {
2221 fz_drop_text_sheet (state.ctx, page->sheet);
2222 page->sheet = NULL;
2223 }
2224 }
2225
2226 static void dropannots (struct page *page)
2227 {
2228 if (page->annots) {
2229 free (page->annots);
2230 page->annots = NULL;
2231 page->annotcount = 0;
2232 }
2233 }
2234
2235 static void ensureannots (struct page *page)
2236 {
2237 int i, count = 0;
2238 size_t annotsize = sizeof (*page->annots);
2239 fz_annot *annot;
2240
2241 if (state.gen != page->agen) {
2242 dropannots (page);
2243 page->agen = state.gen;
2244 }
2245 if (page->annots) return;
2246
2247 for (annot = fz_first_annot (state.ctx, page->fzpage);
2248 annot;
2249 annot = fz_next_annot (state.ctx, page->fzpage, annot)) {
2250 count++;
2251 }
2252
2253 if (count > 0) {
2254 page->annotcount = count;
2255 page->annots = calloc (count, annotsize);
2256 if (!page->annots) {
2257 err (1, "calloc annots %d", count);
2258 }
2259
2260 for (annot = fz_first_annot (state.ctx, page->fzpage), i = 0;
2261 annot;
2262 annot = fz_next_annot (state.ctx, page->fzpage, annot), i++) {
2263 fz_rect rect;
2264
2265 fz_bound_annot (state.ctx, page->fzpage, annot, &rect);
2266 page->annots[i].annot = annot;
2267 fz_round_rect (&page->annots[i].bbox, &rect);
2268 }
2269 }
2270 }
2271
2272 static void dropslinks (struct page *page)
2273 {
2274 if (page->slinks) {
2275 free (page->slinks);
2276 page->slinks = NULL;
2277 page->slinkcount = 0;
2278 }
2279 }
2280
2281 static void ensureslinks (struct page *page)
2282 {
2283 fz_matrix ctm;
2284 int i, count;
2285 size_t slinksize = sizeof (*page->slinks);
2286 fz_link *link, *links;
2287
2288 ensureannots (page);
2289 if (state.gen != page->sgen) {
2290 dropslinks (page);
2291 page->sgen = state.gen;
2292 }
2293 if (page->slinks) return;
2294
2295 links = fz_load_links (state.ctx, page->fzpage);
2296 ctm = state.pagedims[page->pdimno].ctm;
2297
2298 count = page->annotcount;
2299 for (link = links; link; link = link->next) {
2300 count++;
2301 }
2302 if (count > 0) {
2303 int j;
2304
2305 page->slinkcount = count;
2306 page->slinks = calloc (count, slinksize);
2307 if (!page->slinks) {
2308 err (1, "calloc slinks %d", count);
2309 }
2310
2311 for (i = 0, link = links; link; ++i, link = link->next) {
2312 fz_rect rect;
2313
2314 rect = link->rect;
2315 fz_transform_rect (&rect, &ctm);
2316 page->slinks[i].tag = SLINK;
2317 page->slinks[i].u.link = link;
2318 fz_round_rect (&page->slinks[i].bbox, &rect);
2319 }
2320 for (j = 0; j < page->annotcount; ++j, ++i) {
2321 fz_rect rect;
2322 fz_bound_annot (state.ctx,
2323 page->fzpage,
2324 page->annots[j].annot,
2325 &rect);
2326 fz_transform_rect (&rect, &ctm);
2327 fz_round_rect (&page->slinks[i].bbox, &rect);
2328
2329 page->slinks[i].tag = SANNOT;
2330 page->slinks[i].u.annot = page->annots[j].annot;
2331 }
2332 qsort (page->slinks, count, slinksize, compareslinks);
2333 }
2334 }
2335
2336 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2337 static void fmt_linkn (char *s, unsigned int u)
2338 {
2339 unsigned int len; unsigned int q;
2340 unsigned int zma = 'z' - 'a' + 1;
2341 len = 1; q = u;
2342 while (q > zma - 1) { ++len; q /= zma; }
2343 if (s) {
2344 s += len;
2345 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2346 /* handles u == 0 */
2347 }
2348 s[len] = 0;
2349 }
2350
2351 static void highlightslinks (struct page *page, int xoff, int yoff,
2352 int noff, char *targ, int tlen, int hfsize)
2353 {
2354 int i;
2355 char buf[40];
2356 struct slink *slink;
2357 double x0, y0, x1, y1, w;
2358
2359 ensureslinks (page);
2360 glColor3ub (0xc3, 0xb0, 0x91);
2361 for (i = 0; i < page->slinkcount; ++i) {
2362 fmt_linkn (buf, i + noff);
2363 if (!tlen || !strncmp (targ, buf, tlen)) {
2364 slink = &page->slinks[i];
2365
2366 x0 = slink->bbox.x0 + xoff - 5;
2367 y1 = slink->bbox.y0 + yoff - 5;
2368 y0 = y1 + 10 + hfsize;
2369 w = measure_string (state.face, hfsize, buf);
2370 x1 = x0 + w + 10;
2371 recti (x0, y0, x1, y1);
2372 }
2373 }
2374
2375 glEnable (GL_BLEND);
2376 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2377 glEnable (GL_TEXTURE_2D);
2378 glColor3ub (0, 0, 0);
2379 for (i = 0; i < page->slinkcount; ++i) {
2380 fmt_linkn (buf, i + noff);
2381 if (!tlen || !strncmp (targ, buf, tlen)) {
2382 slink = &page->slinks[i];
2383
2384 x0 = slink->bbox.x0 + xoff;
2385 y0 = slink->bbox.y0 + yoff + hfsize;
2386 draw_string (state.face, hfsize, x0, y0, buf);
2387 }
2388 }
2389 glDisable (GL_TEXTURE_2D);
2390 glDisable (GL_BLEND);
2391 }
2392
2393 static void uploadslice (struct tile *tile, struct slice *slice)
2394 {
2395 int offset;
2396 struct slice *slice1;
2397 unsigned char *texdata;
2398
2399 offset = 0;
2400 for (slice1 = tile->slices; slice != slice1; slice1++) {
2401 offset += slice1->h * tile->w * tile->pixmap->n;
2402 }
2403 if (slice->texindex != -1 && slice->texindex < state.texcount
2404 && state.texowners[slice->texindex].slice == slice) {
2405 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2406 }
2407 else {
2408 int subimage = 0;
2409 int texindex = state.texindex++ % state.texcount;
2410
2411 if (state.texowners[texindex].w == tile->w) {
2412 if (state.texowners[texindex].h >= slice->h) {
2413 subimage = 1;
2414 }
2415 else {
2416 state.texowners[texindex].h = slice->h;
2417 }
2418 }
2419 else {
2420 state.texowners[texindex].h = slice->h;
2421 }
2422
2423 state.texowners[texindex].w = tile->w;
2424 state.texowners[texindex].slice = slice;
2425 slice->texindex = texindex;
2426
2427 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2428 if (tile->pbo) {
2429 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2430 texdata = 0;
2431 }
2432 else {
2433 texdata = tile->pixmap->samples;
2434 }
2435 if (subimage) {
2436 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2437 0,
2438 0,
2439 0,
2440 tile->w,
2441 slice->h,
2442 state.texform,
2443 state.texty,
2444 texdata+offset
2445 );
2446 }
2447 else {
2448 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2449 0,
2450 state.texiform,
2451 tile->w,
2452 slice->h,
2453 0,
2454 state.texform,
2455 state.texty,
2456 texdata+offset
2457 );
2458 }
2459 if (tile->pbo) {
2460 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2461 }
2462 }
2463 }
2464
2465 CAMLprim value ml_begintiles (value unit_v)
2466 {
2467 CAMLparam1 (unit_v);
2468 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2469 glTexCoordPointer (2, GL_FLOAT, 0, state.texcoords);
2470 glVertexPointer (2, GL_FLOAT, 0, state.vertices);
2471 CAMLreturn (unit_v);
2472 }
2473
2474 CAMLprim value ml_endtiles (value unit_v)
2475 {
2476 CAMLparam1 (unit_v);
2477 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2478 CAMLreturn (unit_v);
2479 }
2480
2481 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2482 {
2483 CAMLparam2 (args_v, ptr_v);
2484 int dispx = Int_val (Field (args_v, 0));
2485 int dispy = Int_val (Field (args_v, 1));
2486 int dispw = Int_val (Field (args_v, 2));
2487 int disph = Int_val (Field (args_v, 3));
2488 int tilex = Int_val (Field (args_v, 4));
2489 int tiley = Int_val (Field (args_v, 5));
2490 char *s = String_val (ptr_v);
2491 struct tile *tile = parse_pointer ("ml_drawtile", s);
2492 int slicey, firstslice;
2493 struct slice *slice;
2494 GLfloat *texcoords = state.texcoords;
2495 GLfloat *vertices = state.vertices;
2496
2497 firstslice = tiley / tile->sliceheight;
2498 slice = &tile->slices[firstslice];
2499 slicey = tiley % tile->sliceheight;
2500
2501 while (disph > 0) {
2502 int dh;
2503
2504 dh = slice->h - slicey;
2505 dh = MIN (disph, dh);
2506 uploadslice (tile, slice);
2507
2508 texcoords[0] = tilex; texcoords[1] = slicey;
2509 texcoords[2] = tilex+dispw; texcoords[3] = slicey;
2510 texcoords[4] = tilex; texcoords[5] = slicey+dh;
2511 texcoords[6] = tilex+dispw; texcoords[7] = slicey+dh;
2512
2513 vertices[0] = dispx; vertices[1] = dispy;
2514 vertices[2] = dispx+dispw; vertices[3] = dispy;
2515 vertices[4] = dispx; vertices[5] = dispy+dh;
2516 vertices[6] = dispx+dispw; vertices[7] = dispy+dh;
2517
2518 glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
2519 dispy += dh;
2520 disph -= dh;
2521 slice++;
2522 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2523 slicey = 0;
2524 }
2525 CAMLreturn (Val_unit);
2526 }
2527
2528 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2529 value xoff_v, value yoff_v,
2530 value li_v)
2531 {
2532 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2533 int xoff = Int_val (xoff_v);
2534 int yoff = Int_val (yoff_v);
2535 int noff = Int_val (Field (li_v, 0));
2536 char *targ = String_val (Field (li_v, 1));
2537 int tlen = caml_string_length (Field (li_v, 1));
2538 int hfsize = Int_val (Field (li_v, 2));
2539 char *s = String_val (ptr_v);
2540 int hlmask = Int_val (hlinks_v);
2541 struct page *page = parse_pointer ("ml_postprocess", s);
2542
2543 if (!page->fzpage) {
2544 /* deal with loadpage failed pages */
2545 goto done;
2546 }
2547
2548 ensureannots (page);
2549
2550 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2551 if (trylock ("ml_postprocess")) {
2552 noff = 0;
2553 goto done;
2554 }
2555 if (hlmask & 2) {
2556 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2557 noff = page->slinkcount;
2558 }
2559 if (page->tgen == state.gen) {
2560 showsel (page, xoff, yoff);
2561 }
2562 unlock ("ml_postprocess");
2563
2564 done:
2565 CAMLreturn (Val_int (noff));
2566 }
2567
2568 static struct annot *getannot (struct page *page, int x, int y)
2569 {
2570 int i;
2571 fz_point p;
2572 fz_matrix ctm;
2573 const fz_matrix *tctm;
2574 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
2575
2576 if (!page->annots) return NULL;
2577
2578 if (pdf) {
2579 trimctm ((pdf_page *) page->fzpage, page->pdimno);
2580 tctm = &state.pagedims[page->pdimno].tctm;
2581 }
2582 else {
2583 tctm = &fz_identity;
2584 }
2585
2586 p.x = x;
2587 p.y = y;
2588
2589 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2590 fz_invert_matrix (&ctm, &ctm);
2591 fz_transform_point (&p, &ctm);
2592
2593 if (pdf) {
2594 for (i = 0; i < page->annotcount; ++i) {
2595 struct annot *a = &page->annots[i];
2596 pdf_annot *annot = (pdf_annot *) a->annot;
2597 if (p.x >= annot->pagerect.x0 && p.x <= annot->pagerect.x1) {
2598 if (p.y >= annot->pagerect.y0 && p.y <= annot->pagerect.y1) {
2599 return a;
2600 }
2601 }
2602 }
2603 }
2604 return NULL;
2605 }
2606
2607 static fz_link *getlink (struct page *page, int x, int y)
2608 {
2609 fz_point p;
2610 fz_matrix ctm;
2611 const fz_matrix *tctm;
2612 fz_link *link, *links;
2613
2614 tctm = &fz_identity;
2615 links = fz_load_links (state.ctx, page->fzpage);
2616
2617 p.x = x;
2618 p.y = y;
2619
2620 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2621 fz_invert_matrix (&ctm, &ctm);
2622 fz_transform_point (&p, &ctm);
2623
2624 for (link = links; link; link = link->next) {
2625 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2626 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2627 return link;
2628 }
2629 }
2630 }
2631 return NULL;
2632 }
2633
2634 static void ensuretext (struct page *page)
2635 {
2636 if (state.gen != page->tgen) {
2637 droptext (page);
2638 page->tgen = state.gen;
2639 }
2640 if (!page->text) {
2641 fz_matrix ctm;
2642 fz_device *tdev;
2643
2644 page->text = fz_new_text_page (state.ctx);
2645 page->sheet = fz_new_text_sheet (state.ctx);
2646 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2647 ctm = pagectm (page);
2648 fz_begin_page (state.ctx, tdev, &fz_infinite_rect, &ctm);
2649 fz_run_display_list (state.ctx, page->dlist,
2650 tdev, &ctm, &fz_infinite_rect, NULL);
2651 qsort (page->text->blocks, page->text->len,
2652 sizeof (*page->text->blocks), compareblocks);
2653 fz_end_page (state.ctx, tdev);
2654 fz_drop_device (state.ctx, tdev);
2655 }
2656 }
2657
2658 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2659 {
2660 CAMLparam2 (start_page_v, dir_v);
2661 CAMLlocal1 (ret_v);
2662 int i, dir = Int_val (dir_v);
2663 int start_page = Int_val (start_page_v);
2664 int end_page = dir > 0 ? state.pagecount : -1;
2665 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
2666
2667 fz_var (end_page);
2668 ret_v = Val_int (0);
2669 lock ("ml_findpage_with_links");
2670 for (i = start_page + dir; i != end_page; i += dir) {
2671 int found;
2672
2673 fz_var (found);
2674 if (pdf) {
2675 pdf_page *page = NULL;
2676
2677 fz_try (state.ctx) {
2678 page = pdf_load_page (state.ctx, pdf, i);
2679 found = !!page->links || !!page->annots;
2680 }
2681 fz_catch (state.ctx) {
2682 found = 0;
2683 }
2684 if (page) {
2685 fz_drop_page (state.ctx, &page->super);
2686 }
2687 }
2688 else {
2689 fz_page *page = fz_load_page (state.ctx, state.doc, i);
2690 found = !!fz_load_links (state.ctx, page);
2691 fz_drop_page (state.ctx, page);
2692 }
2693
2694 if (found) {
2695 ret_v = caml_alloc_small (1, 1);
2696 Field (ret_v, 0) = Val_int (i);
2697 goto unlock;
2698 }
2699 }
2700 unlock:
2701 unlock ("ml_findpage_with_links");
2702 CAMLreturn (ret_v);
2703 }
2704
2705 enum { dir_first, dir_last };
2706 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2707
2708 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2709 {
2710 CAMLparam2 (ptr_v, dir_v);
2711 CAMLlocal2 (ret_v, pos_v);
2712 struct page *page;
2713 int dirtag, i, slinkindex;
2714 struct slink *found = NULL ,*slink;
2715 char *s = String_val (ptr_v);
2716
2717 page = parse_pointer ("ml_findlink", s);
2718 ret_v = Val_int (0);
2719 /* This is scary we are not taking locks here ensureslinks does
2720 not modify state and given that we obtained the page it can not
2721 disappear under us either */
2722 lock ("ml_findlink");
2723 ensureslinks (page);
2724
2725 if (Is_block (dir_v)) {
2726 dirtag = Tag_val (dir_v);
2727 switch (dirtag) {
2728 case dir_first_visible:
2729 {
2730 int x0, y0, dir, first_index, last_index;
2731
2732 pos_v = Field (dir_v, 0);
2733 x0 = Int_val (Field (pos_v, 0));
2734 y0 = Int_val (Field (pos_v, 1));
2735 dir = Int_val (Field (pos_v, 2));
2736
2737 if (dir >= 0) {
2738 dir = 1;
2739 first_index = 0;
2740 last_index = page->slinkcount;
2741 }
2742 else {
2743 first_index = page->slinkcount - 1;
2744 last_index = -1;
2745 }
2746
2747 for (i = first_index; i != last_index; i += dir) {
2748 slink = &page->slinks[i];
2749 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2750 found = slink;
2751 break;
2752 }
2753 }
2754 }
2755 break;
2756
2757 case dir_left:
2758 slinkindex = Int_val (Field (dir_v, 0));
2759 found = &page->slinks[slinkindex];
2760 for (i = slinkindex - 1; i >= 0; --i) {
2761 slink = &page->slinks[i];
2762 if (slink->bbox.x0 < found->bbox.x0) {
2763 found = slink;
2764 break;
2765 }
2766 }
2767 break;
2768
2769 case dir_right:
2770 slinkindex = Int_val (Field (dir_v, 0));
2771 found = &page->slinks[slinkindex];
2772 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2773 slink = &page->slinks[i];
2774 if (slink->bbox.x0 > found->bbox.x0) {
2775 found = slink;
2776 break;
2777 }
2778 }
2779 break;
2780
2781 case dir_down:
2782 slinkindex = Int_val (Field (dir_v, 0));
2783 found = &page->slinks[slinkindex];
2784 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2785 slink = &page->slinks[i];
2786 if (slink->bbox.y0 >= found->bbox.y0) {
2787 found = slink;
2788 break;
2789 }
2790 }
2791 break;
2792
2793 case dir_up:
2794 slinkindex = Int_val (Field (dir_v, 0));
2795 found = &page->slinks[slinkindex];
2796 for (i = slinkindex - 1; i >= 0; --i) {
2797 slink = &page->slinks[i];
2798 if (slink->bbox.y0 <= found->bbox.y0) {
2799 found = slink;
2800 break;
2801 }
2802 }
2803 break;
2804 }
2805 }
2806 else {
2807 dirtag = Int_val (dir_v);
2808 switch (dirtag) {
2809 case dir_first:
2810 found = page->slinks;
2811 break;
2812
2813 case dir_last:
2814 if (page->slinks) {
2815 found = page->slinks + (page->slinkcount - 1);
2816 }
2817 break;
2818 }
2819 }
2820 if (found) {
2821 ret_v = caml_alloc_small (2, 1);
2822 Field (ret_v, 0) = Val_int (found - page->slinks);
2823 }
2824
2825 unlock ("ml_findlink");
2826 CAMLreturn (ret_v);
2827 }
2828
2829 enum { uuri, ugoto, utext, uunexpected, ulaunch,
2830 unamed, uremote, uremotedest, uannot };
2831
2832 #define LINKTOVAL \
2833 { \
2834 int pageno; \
2835 \
2836 switch (link->dest.kind) { \
2837 case FZ_LINK_GOTO: \
2838 { \
2839 fz_point p; \
2840 \
2841 pageno = link->dest.ld.gotor.page; \
2842 p.x = 0; \
2843 p.y = 0; \
2844 \
2845 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2846 p.y = link->dest.ld.gotor.lt.y; \
2847 fz_transform_point (&p, &pdim->lctm); \
2848 if (p.y < 0) p.y = 0; \
2849 } \
2850 tup_v = caml_alloc_tuple (2); \
2851 ret_v = caml_alloc_small (1, ugoto); \
2852 Field (tup_v, 0) = Val_int (pageno); \
2853 Field (tup_v, 1) = Val_int (p.y); \
2854 Field (ret_v, 0) = tup_v; \
2855 } \
2856 break; \
2857 \
2858 case FZ_LINK_URI: \
2859 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2860 ret_v = caml_alloc_small (1, uuri); \
2861 Field (ret_v, 0) = str_v; \
2862 break; \
2863 \
2864 case FZ_LINK_LAUNCH: \
2865 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2866 ret_v = caml_alloc_small (1, ulaunch); \
2867 Field (ret_v, 0) = str_v; \
2868 break; \
2869 \
2870 case FZ_LINK_NAMED: \
2871 str_v = caml_copy_string (link->dest.ld.named.named); \
2872 ret_v = caml_alloc_small (1, unamed); \
2873 Field (ret_v, 0) = str_v; \
2874 break; \
2875 \
2876 case FZ_LINK_GOTOR: \
2877 { \
2878 int rty; \
2879 \
2880 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2881 pageno = link->dest.ld.gotor.page; \
2882 if (pageno == -1) { \
2883 gr_v = caml_copy_string (link->dest.ld.gotor.dest); \
2884 rty = uremotedest; \
2885 } \
2886 else { \
2887 gr_v = Val_int (pageno); \
2888 rty = uremote; \
2889 } \
2890 tup_v = caml_alloc_tuple (2); \
2891 ret_v = caml_alloc_small (1, rty); \
2892 Field (tup_v, 0) = str_v; \
2893 Field (tup_v, 1) = gr_v; \
2894 Field (ret_v, 0) = tup_v; \
2895 } \
2896 break; \
2897 \
2898 default: \
2899 { \
2900 char buf[80]; \
2901 \
2902 snprintf (buf, sizeof (buf), \
2903 "unhandled link kind %d", link->dest.kind); \
2904 str_v = caml_copy_string (buf); \
2905 ret_v = caml_alloc_small (1, uunexpected); \
2906 Field (ret_v, 0) = str_v; \
2907 } \
2908 break; \
2909 } \
2910 }
2911
2912 CAMLprim value ml_getlink (value ptr_v, value n_v)
2913 {
2914 CAMLparam2 (ptr_v, n_v);
2915 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
2916 fz_link *link;
2917 struct page *page;
2918 struct pagedim *pdim;
2919 char *s = String_val (ptr_v);
2920 struct slink *slink;
2921
2922 /* See ml_findlink for caveat */
2923
2924 ret_v = Val_int (0);
2925 page = parse_pointer ("ml_getlink", s);
2926 ensureslinks (page);
2927 pdim = &state.pagedims[page->pdimno];
2928 slink = &page->slinks[Int_val (n_v)];
2929 if (slink->tag == SLINK) {
2930 link = slink->u.link;
2931 LINKTOVAL;
2932 }
2933 else {
2934 ret_v = caml_alloc_small (1, uannot);
2935 tup_v = caml_alloc_tuple (2);
2936 Field (ret_v, 0) = tup_v;
2937 Field (tup_v, 0) = ptr_v;
2938 Field (tup_v, 1) = n_v;
2939 }
2940
2941 CAMLreturn (ret_v);
2942 }
2943
2944 CAMLprim value ml_getannotcontents (value ptr_v, value n_v)
2945 {
2946 CAMLparam2 (ptr_v, n_v);
2947 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
2948 if (pdf) {
2949 char *s = String_val (ptr_v);
2950 struct page *page;
2951 struct slink *slink;
2952
2953 page = parse_pointer ("ml_getannotcontent", s);
2954 slink = &page->slinks[Int_val (n_v)];
2955 CAMLreturn (caml_copy_string (
2956 pdf_annot_contents (state.ctx, pdf,
2957 (pdf_annot *) slink->u.annot)));
2958 }
2959 else {
2960 CAMLreturn (caml_copy_string (""));
2961 }
2962 }
2963
2964 CAMLprim value ml_getlinkcount (value ptr_v)
2965 {
2966 CAMLparam1 (ptr_v);
2967 struct page *page;
2968 char *s = String_val (ptr_v);
2969
2970 page = parse_pointer ("ml_getlinkcount", s);
2971 CAMLreturn (Val_int (page->slinkcount));
2972 }
2973
2974 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2975 {
2976 CAMLparam2 (ptr_v, n_v);
2977 CAMLlocal1 (ret_v);
2978 struct page *page;
2979 struct slink *slink;
2980 char *s = String_val (ptr_v);
2981 /* See ml_findlink for caveat */
2982
2983 page = parse_pointer ("ml_getlinkrect", s);
2984 ret_v = caml_alloc_tuple (4);
2985 ensureslinks (page);
2986
2987 slink = &page->slinks[Int_val (n_v)];
2988 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2989 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2990 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2991 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2992 unlock ("ml_getlinkrect");
2993 CAMLreturn (ret_v);
2994 }
2995
2996 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2997 {
2998 CAMLparam3 (ptr_v, x_v, y_v);
2999 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
3000 fz_link *link;
3001 struct annot *annot;
3002 struct page *page;
3003 char *ptr = String_val (ptr_v);
3004 int x = Int_val (x_v), y = Int_val (y_v);
3005 struct pagedim *pdim;
3006
3007 ret_v = Val_int (0);
3008 if (trylock ("ml_whatsunder")) {
3009 goto done;
3010 }
3011
3012 page = parse_pointer ("ml_whatsunder", ptr);
3013 pdim = &state.pagedims[page->pdimno];
3014 x += pdim->bounds.x0;
3015 y += pdim->bounds.y0;
3016
3017 {
3018 annot = getannot (page, x, y);
3019 if (annot) {
3020 int i, n = -1;
3021
3022 ensureslinks (page);
3023 for (i = 0; i < page->slinkcount; ++i) {
3024 if (page->slinks[i].tag == SANNOT
3025 && page->slinks[i].u.annot == annot->annot) {
3026 n = i;
3027 break;
3028 }
3029 }
3030 ret_v = caml_alloc_small (1, uannot);
3031 tup_v = caml_alloc_tuple (2);
3032 Field (ret_v, 0) = tup_v;
3033 Field (tup_v, 0) = ptr_v;
3034 Field (tup_v, 1) = Val_int (n);
3035 goto unlock;
3036 }
3037 }
3038
3039 link = getlink (page, x, y);
3040 if (link) {
3041 LINKTOVAL;
3042 }
3043 else {
3044 fz_rect *b;
3045 fz_page_block *pageb;
3046 fz_text_block *block;
3047
3048 ensuretext (page);
3049 for (pageb = page->text->blocks;
3050 pageb < page->text->blocks + page->text->len;
3051 ++pageb) {
3052 fz_text_line *line;
3053 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3054 block = pageb->u.text;
3055
3056 b = &block->bbox;
3057 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3058 continue;
3059
3060 for (line = block->lines;
3061 line < block->lines + block->len;
3062 ++line) {
3063 fz_text_span *span;
3064
3065 b = &line->bbox;
3066 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3067 continue;
3068
3069 for (span = line->first_span; span; span = span->next) {
3070 int charnum;
3071
3072 b = &span->bbox;
3073 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3074 continue;
3075
3076 for (charnum = 0; charnum < span->len; ++charnum) {
3077 fz_rect bbox;
3078 fz_text_char_bbox (state.ctx, &bbox, span, charnum);
3079 b = &bbox;
3080
3081 if (x >= b->x0 && x <= b->x1
3082 && y >= b->y0 && y <= b->y1) {
3083 fz_text_style *style = span->text->style;
3084 const char *n2 =
3085 style->font
3086 ? style->font->name
3087 : "Span has no font name"
3088 ;
3089 FT_FaceRec *face = style->font->ft_face;
3090 if (face && face->family_name) {
3091 char *s;
3092 char *n1 = face->family_name;
3093 size_t l1 = strlen (n1);
3094 size_t l2 = strlen (n2);
3095
3096 if (l1 != l2 || memcmp (n1, n2, l1)) {
3097 s = malloc (l1 + l2 + 2);
3098 if (s) {
3099 memcpy (s, n2, l2);
3100 s[l2] = '=';
3101 memcpy (s + l2 + 1, n1, l1 + 1);
3102 str_v = caml_copy_string (s);
3103 free (s);
3104 }
3105 }
3106 }
3107 if (str_v == Val_unit) {
3108 str_v = caml_copy_string (n2);
3109 }
3110 ret_v = caml_alloc_small (1, utext);
3111 Field (ret_v, 0) = str_v;
3112 goto unlock;
3113 }
3114 }
3115 }
3116 }
3117 }
3118 }
3119 unlock:
3120 unlock ("ml_whatsunder");
3121
3122 done:
3123 CAMLreturn (ret_v);
3124 }
3125
3126 enum { mark_page, mark_block, mark_line, mark_word };
3127
3128 static int uninteresting (int c)
3129 {
3130 return c == ' ' || c == '\n' || c == '\t' || c == '\n' || c == '\r'
3131 || ispunct (c);
3132 }
3133
3134 CAMLprim value ml_clearmark (value ptr_v)
3135 {
3136 CAMLparam1 (ptr_v);
3137 char *s = String_val (ptr_v);
3138 struct page *page;
3139
3140 if (trylock ("ml_clearmark")) {
3141 goto done;
3142 }
3143
3144 page = parse_pointer ("ml_clearmark", s);
3145 page->fmark.span = NULL;
3146 page->lmark.span = NULL;
3147 page->fmark.i = 0;
3148 page->lmark.i = 0;
3149
3150 unlock ("ml_clearmark");
3151 done:
3152 CAMLreturn (Val_unit);
3153 }
3154
3155 CAMLprim value ml_markunder (value ptr_v, value x_v, value y_v, value mark_v)
3156 {
3157 CAMLparam4 (ptr_v, x_v, y_v, mark_v);
3158 CAMLlocal1 (ret_v);
3159 fz_rect *b;
3160 struct page *page;
3161 fz_text_line *line;
3162 fz_page_block *pageb;
3163 fz_text_block *block;
3164 struct pagedim *pdim;
3165 int mark = Int_val (mark_v);
3166 char *s = String_val (ptr_v);
3167 int x = Int_val (x_v), y = Int_val (y_v);
3168
3169 ret_v = Val_bool (0);
3170 if (trylock ("ml_markunder")) {
3171 goto done;
3172 }
3173
3174 page = parse_pointer ("ml_markunder", s);
3175 pdim = &state.pagedims[page->pdimno];
3176
3177 ensuretext (page);
3178
3179 if (mark == mark_page) {
3180 int i;
3181 fz_page_block *pb1 = NULL, *pb2 = NULL;
3182
3183 for (i = 0; i < page->text->len; ++i) {
3184 if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
3185 pb1 = &page->text->blocks[i];
3186 break;
3187 }
3188 }
3189 if (!pb1) goto unlock;
3190
3191 for (i = page->text->len - 1; i >= 0; --i) {
3192 if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
3193 pb2 = &page->text->blocks[i];
3194 break;
3195 }
3196 }
3197 if (!pb2) goto unlock;
3198
3199 block = pb1->u.text;
3200
3201 page->fmark.i = 0;
3202 page->fmark.span = block->lines->first_span;
3203
3204 block = pb2->u.text;
3205 line = &block->lines[block->len - 1];
3206 page->lmark.i = line->last_span->len - 1;
3207 page->lmark.span = line->last_span;
3208 ret_v = Val_bool (1);
3209 goto unlock;
3210 }
3211
3212 x += pdim->bounds.x0;
3213 y += pdim->bounds.y0;
3214
3215 for (pageb = page->text->blocks;
3216 pageb < page->text->blocks + page->text->len;
3217 ++pageb) {
3218 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3219 block = pageb->u.text;
3220
3221 b = &block->bbox;
3222 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3223 continue;
3224
3225 if (mark == mark_block) {
3226 page->fmark.i = 0;
3227 page->fmark.span = block->lines->first_span;
3228
3229 line = &block->lines[block->len - 1];
3230 page->lmark.i = line->last_span->len - 1;
3231 page->lmark.span = line->last_span;
3232 ret_v = Val_bool (1);
3233 goto unlock;
3234 }
3235
3236 for (line = block->lines;
3237 line < block->lines + block->len;
3238 ++line) {
3239 fz_text_span *span;
3240
3241 b = &line->bbox;
3242 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3243 continue;
3244
3245 if (mark == mark_line) {
3246 page->fmark.i = 0;
3247 page->fmark.span = line->first_span;
3248
3249 page->lmark.i = line->last_span->len - 1;
3250 page->lmark.span = line->last_span;
3251 ret_v = Val_bool (1);
3252 goto unlock;
3253 }
3254
3255 for (span = line->first_span; span; span = span->next) {
3256 int charnum;
3257
3258 b = &span->bbox;
3259 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3260 continue;
3261
3262 for (charnum = 0; charnum < span->len; ++charnum) {
3263 fz_rect bbox;
3264 fz_text_char_bbox (state.ctx, &bbox, span, charnum);
3265 b = &bbox;
3266
3267 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1) {
3268 /* unicode ftw */
3269 int charnum2, charnum3 = -1, charnum4 = -1;
3270
3271 if (uninteresting (span->text[charnum].c)) goto unlock;
3272
3273 for (charnum2 = charnum; charnum2 >= 0; --charnum2) {
3274 if (uninteresting (span->text[charnum2].c)) {
3275 charnum3 = charnum2 + 1;
3276 break;
3277 }
3278 }
3279 if (charnum3 == -1) charnum3 = 0;
3280
3281 for (charnum2 = charnum + 1;
3282 charnum2 < span->len;
3283 ++charnum2) {
3284 if (uninteresting (span->text[charnum2].c)) break;
3285 charnum4 = charnum2;
3286 }
3287 if (charnum4 == -1) goto unlock;
3288
3289 page->fmark.i = charnum3;
3290 page->fmark.span = span;
3291
3292 page->lmark.i = charnum4;
3293 page->lmark.span = span;
3294 ret_v = Val_bool (1);
3295 goto unlock;
3296 }
3297 }
3298 }
3299 }
3300 }
3301 unlock:
3302 if (!Bool_val (ret_v)) {
3303 page->fmark.span = NULL;
3304 page->lmark.span = NULL;
3305 page->fmark.i = 0;
3306 page->lmark.i = 0;
3307 }
3308 unlock ("ml_markunder");
3309
3310 done:
3311 CAMLreturn (ret_v);
3312 }
3313
3314 CAMLprim value ml_rectofblock (value ptr_v, value x_v, value y_v)
3315 {
3316 CAMLparam3 (ptr_v, x_v, y_v);
3317 CAMLlocal2 (ret_v, res_v);
3318 fz_rect *b = NULL;
3319 struct page *page;
3320 fz_page_block *pageb;
3321 struct pagedim *pdim;
3322 char *s = String_val (ptr_v);
3323 int x = Int_val (x_v), y = Int_val (y_v);
3324
3325 ret_v = Val_int (0);
3326 if (trylock ("ml_rectofblock")) {
3327 goto done;
3328 }
3329
3330 page = parse_pointer ("ml_rectofblock", s);
3331 pdim = &state.pagedims[page->pdimno];
3332 x += pdim->bounds.x0;
3333 y += pdim->bounds.y0;
3334
3335 ensuretext (page);
3336
3337 for (pageb = page->text->blocks;
3338 pageb < page->text->blocks + page->text->len;
3339 ++pageb) {
3340 switch (pageb->type) {
3341 case FZ_PAGE_BLOCK_TEXT:
3342 b = &pageb->u.text->bbox;
3343 break;
3344
3345 case FZ_PAGE_BLOCK_IMAGE:
3346 b = &pageb->u.image->bbox;
3347 break;
3348
3349 default:
3350 continue;
3351 }
3352
3353 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1)
3354 break;
3355 b = NULL;
3356 }
3357 if (b) {
3358 res_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3359 ret_v = caml_alloc_small (1, 1);
3360 Store_double_field (res_v, 0, b->x0);
3361 Store_double_field (res_v, 1, b->x1);
3362 Store_double_field (res_v, 2, b->y0);
3363 Store_double_field (res_v, 3, b->y1);
3364 Field (ret_v, 0) = res_v;
3365 }
3366 unlock ("ml_rectofblock");
3367
3368 done:
3369 CAMLreturn (ret_v);
3370 }
3371
3372 CAMLprim value ml_seltext (value ptr_v, value rect_v)
3373 {
3374 CAMLparam2 (ptr_v, rect_v);
3375 fz_rect b;
3376 struct page *page;
3377 struct pagedim *pdim;
3378 char *s = String_val (ptr_v);
3379 int i, x0, x1, y0, y1, fi, li;
3380 fz_text_line *line;
3381 fz_page_block *pageb;
3382 fz_text_block *block;
3383 fz_text_span *span, *fspan, *lspan;
3384
3385 if (trylock ("ml_seltext")) {
3386 goto done;
3387 }
3388
3389 page = parse_pointer ("ml_seltext", s);
3390 ensuretext (page);
3391
3392 pdim = &state.pagedims[page->pdimno];
3393 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;
3394 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
3395 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
3396 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
3397
3398 if (y0 > y1) {
3399 int t = y0;
3400 y0 = y1;
3401 y1 = t;
3402 x0 = x1;
3403 x1 = t;
3404 }
3405
3406 fi = page->fmark.i;
3407 fspan = page->fmark.span;
3408
3409 li = page->lmark.i;
3410 lspan = page->lmark.span;
3411
3412 for (pageb = page->text->blocks;
3413 pageb < page->text->blocks + page->text->len;
3414 ++pageb) {
3415 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3416 block = pageb->u.text;
3417 for (line = block->lines;
3418 line < block->lines + block->len;
3419 ++line) {
3420
3421 for (span = line->first_span; span; span = span->next) {
3422 for (i = 0; i < span->len; ++i) {
3423 fz_text_char_bbox (state.ctx, &b, span, i);
3424
3425 if (x0 >= b.x0 && x0 <= b.x1
3426 && y0 >= b.y0 && y0 <= b.y1) {
3427 fspan = span;
3428 fi = i;
3429 }
3430 if (x1 >= b.x0 && x1 <= b.x1
3431 && y1 >= b.y0 && y1 <= b.y1) {
3432 lspan = span;
3433 li = i;
3434 }
3435 }
3436 }
3437 }
3438 }
3439 if (x1 < x0 && fspan == lspan) {
3440 i = fi;
3441 span = fspan;
3442
3443 fi = li;
3444 fspan = lspan;
3445
3446 li = i;
3447 lspan = span;
3448 }
3449
3450 page->fmark.i = fi;
3451 page->fmark.span = fspan;
3452
3453 page->lmark.i = li;
3454 page->lmark.span = lspan;
3455
3456 unlock ("ml_seltext");
3457
3458 done:
3459 CAMLreturn (Val_unit);
3460 }
3461
3462 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
3463 {
3464 char buf[4];
3465 int i, len, ret;
3466
3467 for (i = a; i <= b; ++i) {
3468 len = fz_runetochar (buf, span->text[i].c);
3469 ret = fwrite (buf, len, 1, f);
3470
3471 if (ret != 1) {
3472 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
3473 len, ret, strerror (errno));
3474 return -1;
3475 }
3476 }
3477 return 0;
3478 }
3479
3480 #ifdef __CYGWIN__
3481 CAMLprim value ml_spawn (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
3482 {
3483 caml_failwith ("ml_popen not implemented under Cygwin");
3484 }
3485 #else
3486 CAMLprim value ml_spawn (value command_v, value fds_v)
3487 {
3488 CAMLparam2 (command_v, fds_v);
3489 CAMLlocal2 (l_v, tup_v);
3490 int ret, ret1;
3491 pid_t pid;
3492 char *msg = NULL;
3493 value earg_v = Nothing;
3494 posix_spawnattr_t attr;
3495 posix_spawn_file_actions_t fa;
3496 char *argv[] = { "/bin/sh", "-c", NULL, NULL };
3497
3498 argv[2] = String_val (command_v);
3499
3500 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3501 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3502 }
3503
3504 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3505 msg = "posix_spawnattr_init";
3506 goto fail1;
3507 }
3508
3509 #ifdef POSIX_SPAWN_USEVFORK
3510 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3511 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3512 goto fail;
3513 }
3514 #endif
3515
3516 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3517 int fd1, fd2;
3518
3519 tup_v = Field (l_v, 0);
3520 fd1 = Int_val (Field (tup_v, 0));
3521 fd2 = Int_val (Field (tup_v, 1));
3522 if (fd2 < 0) {
3523 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3524 msg = "posix_spawn_file_actions_addclose";
3525 earg_v = tup_v;
3526 goto fail;
3527 }
3528 }
3529 else {
3530 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3531 msg = "posix_spawn_file_actions_adddup2";
3532 earg_v = tup_v;
3533 goto fail;
3534 }
3535 }
3536 }
3537
3538 if ((ret = posix_spawn (&pid, "/bin/sh", &fa, &attr, argv, environ))) {
3539 msg = "posix_spawn";
3540 goto fail;
3541 }
3542
3543 fail:
3544 if ((ret1 = posix_spawnattr_destroy (&attr)) != 0) {
3545 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret1));
3546 }
3547
3548 fail1:
3549 if ((ret1 = posix_spawn_file_actions_destroy (&fa)) != 0) {
3550 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3551 strerror (ret1));
3552 }
3553
3554 if (msg)
3555 unix_error (ret, msg, earg_v);
3556
3557 CAMLreturn (Val_int (pid));
3558 }
3559 #endif
3560
3561 CAMLprim value ml_hassel (value ptr_v)
3562 {
3563 CAMLparam1 (ptr_v);
3564 CAMLlocal1 (ret_v);
3565 struct page *page;
3566 char *s = String_val (ptr_v);
3567
3568 ret_v = Val_bool (0);
3569 if (trylock ("ml_hassel")) {
3570 goto done;
3571 }
3572
3573 page = parse_pointer ("ml_hassel", s);
3574 ret_v = Val_bool (page->fmark.span && page->lmark.span);
3575 unlock ("ml_hassel");
3576 done:
3577 CAMLreturn (ret_v);
3578 }
3579
3580 CAMLprim value ml_copysel (value fd_v, value ptr_v)
3581 {
3582 CAMLparam2 (fd_v, ptr_v);
3583 FILE *f;
3584 int seen = 0;
3585 struct page *page;
3586 fz_text_line *line;
3587 fz_page_block *pageb;
3588 fz_text_block *block;
3589 int fd = Int_val (fd_v);
3590 char *s = String_val (ptr_v);
3591
3592 if (trylock ("ml_copysel")) {
3593 goto done;
3594 }
3595
3596 page = parse_pointer ("ml_copysel", s);
3597
3598 if (!page->fmark.span || !page->lmark.span) {
3599 fprintf (stderr, "nothing to copy on page %d\n", page->pageno);
3600 goto unlock;
3601 }
3602
3603 f = fdopen (fd, "w");
3604 if (!f) {
3605 fprintf (stderr, "failed to fdopen sel pipe (from fd %d): %s\n",
3606 fd, strerror (errno));
3607 f = stdout;
3608 }
3609
3610 for (pageb = page->text->blocks;
3611 pageb < page->text->blocks + page->text->len;
3612 ++pageb) {
3613 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3614 block = pageb->u.text;
3615 for (line = block->lines;
3616 line < block->lines + block->len;
3617 ++line) {
3618 fz_text_span *span;
3619
3620 for (span = line->first_span; span; span = span->next) {
3621 int a, b;
3622
3623 seen |= span == page->fmark.span || span == page->lmark.span;
3624 a = span == page->fmark.span ? page->fmark.i : 0;
3625 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3626
3627 if (seen) {
3628 if (pipespan (f, span, a, b)) {
3629 goto close;
3630 }
3631 if (span == page->lmark.span) {
3632 goto close;
3633 }
3634 if (span == line->last_span) {
3635 if (putc ('\n', f) == EOF) {
3636 fprintf (stderr,
3637 "failed break line on sel pipe: %s\n",
3638 strerror (errno));
3639 goto close;
3640 }
3641 }
3642 }
3643 }
3644 }
3645 }
3646 close:
3647 if (f != stdout) {
3648 int ret = fclose (f);
3649 fd = -1;
3650 if (ret == -1) {
3651 if (errno != ECHILD) {
3652 fprintf (stderr, "failed to close sel pipe: %s\n",
3653 strerror (errno));
3654 }
3655 }
3656 }
3657 unlock:
3658 unlock ("ml_copysel");
3659
3660 done:
3661 if (fd >= 0) {
3662 if (close (fd)) {
3663 fprintf (stderr, "failed to close sel pipe: %s\n",
3664 strerror (errno));
3665 }
3666 }
3667 CAMLreturn (Val_unit);
3668 }
3669
3670 CAMLprim value ml_getpdimrect (value pagedimno_v)
3671 {
3672 CAMLparam1 (pagedimno_v);
3673 CAMLlocal1 (ret_v);
3674 int pagedimno = Int_val (pagedimno_v);
3675 fz_rect box;
3676
3677 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3678 if (trylock ("ml_getpdimrect")) {
3679 box = fz_empty_rect;
3680 }
3681 else {
3682 box = state.pagedims[pagedimno].mediabox;
3683 unlock ("ml_getpdimrect");
3684 }
3685
3686 Store_double_field (ret_v, 0, box.x0);
3687 Store_double_field (ret_v, 1, box.x1);
3688 Store_double_field (ret_v, 2, box.y0);
3689 Store_double_field (ret_v, 3, box.y1);
3690
3691 CAMLreturn (ret_v);
3692 }
3693
3694 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3695 value dw_v, value cols_v)
3696 {
3697 CAMLparam4 (winw_v, winh_v, dw_v, cols_v);
3698 CAMLlocal1 (ret_v);
3699 int i;
3700 double zoom = -1.;
3701 double maxh = 0.0;
3702 struct pagedim *p;
3703 double winw = Int_val (winw_v);
3704 double winh = Int_val (winh_v);
3705 double dw = Int_val (dw_v);
3706 double cols = Int_val (cols_v);
3707 double pw = 1.0, ph = 1.0;
3708
3709 if (trylock ("ml_zoom_for_height")) {
3710 goto done;
3711 }
3712
3713 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3714 double w = p->pagebox.x1 / cols;
3715 double h = p->pagebox.y1;
3716 if (h > maxh) {
3717 maxh = h;
3718 ph = h;
3719 if (state.fitmodel != FitProportional) pw = w;
3720 }
3721 if ((state.fitmodel == FitProportional) && w > pw) pw = w;
3722 }
3723
3724 zoom = (((winh / ph) * pw) + dw) / winw;
3725 unlock ("ml_zoom_for_height");
3726 done:
3727 ret_v = caml_copy_double (zoom);
3728 CAMLreturn (ret_v);
3729 }
3730
3731 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3732 {
3733 CAMLparam4 (pt_v, x_v, y_v, string_v);
3734 CAMLlocal1 (ret_v);
3735 int pt = Int_val(pt_v);
3736 int x = Int_val (x_v);
3737 int y = Int_val (y_v);
3738 double w;
3739
3740 w = draw_string (state.face, pt, x, y, String_val (string_v));
3741 ret_v = caml_copy_double (w);
3742 CAMLreturn (ret_v);
3743 }
3744
3745 CAMLprim value ml_measure_string (value pt_v, value string_v)
3746 {
3747 CAMLparam2 (pt_v, string_v);
3748 CAMLlocal1 (ret_v);
3749 int pt = Int_val (pt_v);
3750 double w;
3751
3752 w = measure_string (state.face, pt, String_val (string_v));
3753 ret_v = caml_copy_double (w);
3754 CAMLreturn (ret_v);
3755 }
3756
3757 CAMLprim value ml_getpagebox (value opaque_v)
3758 {
3759 CAMLparam1 (opaque_v);
3760 CAMLlocal1 (ret_v);
3761 fz_rect rect;
3762 fz_irect bbox;
3763 fz_matrix ctm;
3764 fz_device *dev;
3765 char *s = String_val (opaque_v);
3766 struct page *page = parse_pointer ("ml_getpagebox", s);
3767
3768 ret_v = caml_alloc_tuple (4);
3769 dev = fz_new_bbox_device (state.ctx, &rect);
3770 dev->hints |= FZ_IGNORE_SHADE;
3771
3772 ctm = pagectm (page);
3773 fz_run_page (state.ctx, page->fzpage, dev, &ctm, NULL);
3774
3775 fz_drop_device (state.ctx, dev);
3776 fz_round_rect (&bbox, &rect);
3777 Field (ret_v, 0) = Val_int (bbox.x0);
3778 Field (ret_v, 1) = Val_int (bbox.y0);
3779 Field (ret_v, 2) = Val_int (bbox.x1);
3780 Field (ret_v, 3) = Val_int (bbox.y1);
3781
3782 CAMLreturn (ret_v);
3783 }
3784
3785 CAMLprim value ml_setaalevel (value level_v)
3786 {
3787 CAMLparam1 (level_v);
3788
3789 state.aalevel = Int_val (level_v);
3790 CAMLreturn (Val_unit);
3791 }
3792
3793 #pragma GCC diagnostic push
3794 #pragma GCC diagnostic ignored "-Wvariadic-macros"
3795 #include <X11/Xlib.h>
3796 #include <X11/cursorfont.h>
3797 #pragma GCC diagnostic pop
3798
3799 #include <GL/glx.h>
3800
3801 static const int shapes[] = {
3802 XC_arrow, XC_hand2, XC_exchange, XC_fleur, XC_xterm
3803 };
3804
3805 #define CURS_COUNT (sizeof (shapes) / sizeof (shapes[0]))
3806
3807 static struct {
3808 Window wid;
3809 Display *dpy;
3810 GLXContext ctx;
3811 XVisualInfo *visual;
3812 Cursor curs[CURS_COUNT];
3813 } glx;
3814
3815 CAMLprim value ml_glxinit (value display_v, value wid_v, value screen_v)
3816 {
3817 CAMLparam3 (display_v, wid_v, screen_v);
3818 int attribs[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3819
3820 glx.dpy = XOpenDisplay (String_val (display_v));
3821 if (!glx.dpy) {
3822 caml_failwith ("XOpenDisplay");
3823 }
3824
3825 glx.visual = glXChooseVisual (glx.dpy, Int_val (screen_v), attribs);
3826 if (!glx.visual) {
3827 XCloseDisplay (glx.dpy);
3828 caml_failwith ("glXChooseVisual");
3829 }
3830
3831 for (size_t n = 0; n < CURS_COUNT; ++n) {
3832 glx.curs[n] = XCreateFontCursor (glx.dpy, shapes[n]);
3833 }
3834
3835 glx.wid = Int_val (wid_v);
3836 CAMLreturn (Val_int (glx.visual->visualid));
3837 }
3838
3839 CAMLprim value ml_glxcompleteinit (value unit_v)
3840 {
3841 CAMLparam1 (unit_v);
3842
3843 glx.ctx = glXCreateContext (glx.dpy, glx.visual, NULL, True);
3844 if (!glx.ctx) {
3845 caml_failwith ("glXCreateContext");
3846 }
3847
3848 XFree (glx.visual);
3849 glx.visual = NULL;
3850
3851 if (!glXMakeCurrent (glx.dpy, glx.wid, glx.ctx)) {
3852 glXDestroyContext (glx.dpy, glx.ctx);
3853 glx.ctx = NULL;
3854 caml_failwith ("glXMakeCurrent");
3855 }
3856 CAMLreturn (Val_unit);
3857 }
3858
3859 CAMLprim value ml_setcursor (value cursor_v)
3860 {
3861 CAMLparam1 (cursor_v);
3862 size_t cursn = Int_val (cursor_v);
3863 XSetWindowAttributes wa;
3864
3865 if (cursn >= CURS_COUNT) caml_failwith ("cursor index out of range");
3866 wa.cursor = glx.curs[cursn];
3867 XChangeWindowAttributes (glx.dpy, glx.wid, CWCursor, &wa);
3868 XFlush (glx.dpy);
3869 CAMLreturn (Val_unit);
3870 }
3871
3872 CAMLprim value ml_swapb (value unit_v)
3873 {
3874 CAMLparam1 (unit_v);
3875 glXSwapBuffers (glx.dpy, glx.wid);
3876 CAMLreturn (Val_unit);
3877 }
3878
3879 #include "keysym2ucs.c"
3880
3881 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3882 {
3883 CAMLparam1 (keysym_v);
3884 CAMLlocal1 (str_v);
3885 KeySym keysym = Int_val (keysym_v);
3886 Rune rune;
3887 int len;
3888 char buf[5];
3889
3890 rune = keysym2ucs (keysym);
3891 len = fz_runetochar (buf, rune);
3892 buf[len] = 0;
3893 str_v = caml_copy_string (buf);
3894 CAMLreturn (str_v);
3895 }
3896
3897 enum { piunknown, pilinux, piosx, pisun, pibsd, picygwin };
3898
3899 CAMLprim value ml_platform (value unit_v)
3900 {
3901 CAMLparam1 (unit_v);
3902 CAMLlocal2 (tup_v, arr_v);
3903 int platid = piunknown;
3904 struct utsname buf;
3905
3906 #if defined __linux__
3907 platid = pilinux;
3908 #elif defined __CYGWIN__
3909 platid = picygwin;
3910 #elif defined __DragonFly__ || defined __FreeBSD__
3911 || defined __OpenBSD__ || defined __NetBSD__
3912 platid = pibsd;
3913 #elif defined __sun__
3914 platid = pisun;
3915 #elif defined __APPLE__
3916 platid = piosx;
3917 #endif
3918 if (uname (&buf)) err (1, "uname");
3919
3920 tup_v = caml_alloc_tuple (2);
3921 {
3922 char const *sar[] = {
3923 buf.sysname,
3924 buf.release,
3925 buf.version,
3926 buf.machine,
3927 NULL
3928 };
3929 arr_v = caml_copy_string_array (sar);
3930 }
3931 Field (tup_v, 0) = Val_int (platid);
3932 Field (tup_v, 1) = arr_v;
3933 CAMLreturn (tup_v);
3934 }
3935
3936 CAMLprim value ml_cloexec (value fd_v)
3937 {
3938 CAMLparam1 (fd_v);
3939 int fd = Int_val (fd_v);
3940
3941 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3942 uerror ("fcntl", Nothing);
3943 }
3944 CAMLreturn (Val_unit);
3945 }
3946
3947 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3948 {
3949 CAMLparam2 (w_v, h_v);
3950 CAMLlocal1 (ret_v);
3951 struct pbo *pbo;
3952 int w = Int_val (w_v);
3953 int h = Int_val (h_v);
3954 int cs = Int_val (cs_v);
3955
3956 if (state.pbo_usable) {
3957 pbo = calloc (sizeof (*pbo), 1);
3958 if (!pbo) {
3959 err (1, "calloc pbo");
3960 }
3961
3962 switch (cs) {
3963 case 0:
3964 case 1:
3965 pbo->size = w*h*4;
3966 break;
3967 case 2:
3968 pbo->size = w*h*2;
3969 break;
3970 default:
3971 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3972 }
3973
3974 state.glGenBuffersARB (1, &pbo->id);
3975 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3976 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3977 NULL, GL_STREAM_DRAW);
3978 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3979 GL_READ_WRITE);
3980 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3981 if (!pbo->ptr) {
3982 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3983 state.glDeleteBuffersARB (1, &pbo->id);
3984 free (pbo);
3985 ret_v = caml_copy_string ("0");
3986 }
3987 else {
3988 int res;
3989 char *s;
3990
3991 res = snprintf (NULL, 0, "%" FMT_ptr, FMT_ptr_cast (pbo));
3992 if (res < 0) {
3993 err (1, "snprintf %" FMT_ptr " failed", FMT_ptr_cast (pbo));
3994 }
3995 s = malloc (res+1);
3996 if (!s) {
3997 err (1, "malloc %d bytes failed", res+1);
3998 }
3999 res = sprintf (s, "%" FMT_ptr, FMT_ptr_cast (pbo));
4000 if (res < 0) {
4001 err (1, "sprintf %" FMT_ptr " failed", FMT_ptr_cast (pbo));
4002 }
4003 ret_v = caml_copy_string (s);
4004 free (s);
4005 }
4006 }
4007 else {
4008 ret_v = caml_copy_string ("0");
4009 }
4010 CAMLreturn (ret_v);
4011 }
4012
4013 CAMLprim value ml_freepbo (value s_v)
4014 {
4015 CAMLparam1 (s_v);
4016 char *s = String_val (s_v);
4017 struct tile *tile = parse_pointer ("ml_freepbo", s);
4018
4019 if (tile->pbo) {
4020 state.glDeleteBuffersARB (1, &tile->pbo->id);
4021 tile->pbo->id = -1;
4022 tile->pbo->ptr = NULL;
4023 tile->pbo->size = -1;
4024 }
4025 CAMLreturn (Val_unit);
4026 }
4027
4028 CAMLprim value ml_unmappbo (value s_v)
4029 {
4030 CAMLparam1 (s_v);
4031 char *s = String_val (s_v);
4032 struct tile *tile = parse_pointer ("ml_unmappbo", s);
4033
4034 if (tile->pbo) {
4035 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
4036 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
4037 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
4038 }
4039 tile->pbo->ptr = NULL;
4040 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
4041 }
4042 CAMLreturn (Val_unit);
4043 }
4044
4045 static void setuppbo (void)
4046 {
4047 #define GGPA(n) (*(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n))
4048 state.pbo_usable = GGPA (glBindBufferARB)
4049 && GGPA (glUnmapBufferARB)
4050 && GGPA (glMapBufferARB)
4051 && GGPA (glBufferDataARB)
4052 && GGPA (glGenBuffersARB)
4053 && GGPA (glDeleteBuffersARB);
4054 #undef GGPA
4055 }
4056
4057 CAMLprim value ml_pbo_usable (value unit_v)
4058 {
4059 CAMLparam1 (unit_v);
4060 CAMLreturn (Val_bool (state.pbo_usable));
4061 }
4062
4063 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
4064 {
4065 CAMLparam3 (ptr_v, x_v, y_v);
4066 CAMLlocal2 (ret_v, tup_v);
4067 struct page *page;
4068 char *s = String_val (ptr_v);
4069 int x = Int_val (x_v), y = Int_val (y_v);
4070 struct pagedim *pdim;
4071 fz_point p;
4072 fz_matrix ctm;
4073
4074 page = parse_pointer ("ml_unproject", s);
4075 pdim = &state.pagedims[page->pdimno];
4076
4077 ret_v = Val_int (0);
4078 if (trylock ("ml_unproject")) {
4079 goto done;
4080 }
4081
4082 if (pdf_specifics (state.ctx, state.doc)) {
4083 trimctm ((pdf_page *) page->fzpage, page->pdimno);
4084 ctm = state.pagedims[page->pdimno].tctm;
4085 }
4086 else {
4087 ctm = fz_identity;
4088 }
4089 p.x = x + pdim->bounds.x0;
4090 p.y = y + pdim->bounds.y0;
4091
4092 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
4093 fz_invert_matrix (&ctm, &ctm);
4094 fz_transform_point (&p, &ctm);
4095
4096 tup_v = caml_alloc_tuple (2);
4097 ret_v = caml_alloc_small (1, 1);
4098 Field (tup_v, 0) = Val_int (p.x);
4099 Field (tup_v, 1) = Val_int (p.y);
4100 Field (ret_v, 0) = tup_v;
4101
4102 unlock ("ml_unproject");
4103 done:
4104 CAMLreturn (ret_v);
4105 }
4106
4107 CAMLprim value ml_addannot (value ptr_v, value x_v, value y_v,
4108 value contents_v)
4109 {
4110 CAMLparam4 (ptr_v, x_v, y_v, contents_v);
4111 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
4112
4113 if (pdf) {
4114 pdf_annot *annot;
4115 struct page *page;
4116 fz_point p;
4117 char *s = String_val (ptr_v);
4118
4119 page = parse_pointer ("ml_addannot", s);
4120 annot = pdf_create_annot (state.ctx, pdf,
4121 (pdf_page *) page->fzpage, FZ_ANNOT_TEXT);
4122 p.x = Int_val (x_v);
4123 p.y = Int_val (y_v);
4124 pdf_set_annot_contents (state.ctx, pdf, annot, String_val (contents_v));
4125 pdf_set_text_annot_position (state.ctx, pdf, annot, p);
4126 state.dirty = 1;
4127 }
4128 CAMLreturn (Val_unit);
4129 }
4130
4131 CAMLprim value ml_delannot (value ptr_v, value n_v)
4132 {
4133 CAMLparam2 (ptr_v, n_v);
4134 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
4135
4136 if (pdf) {
4137 struct page *page;
4138 char *s = String_val (ptr_v);
4139 struct slink *slink;
4140
4141 page = parse_pointer ("ml_delannot", s);
4142 slink = &page->slinks[Int_val (n_v)];
4143 pdf_delete_annot (state.ctx, pdf,
4144 (pdf_page *) page->fzpage,
4145 (pdf_annot *) slink->u.annot);
4146 state.dirty = 1;
4147 }
4148 CAMLreturn (Val_unit);
4149 }
4150
4151 CAMLprim value ml_modannot (value ptr_v, value n_v, value str_v)
4152 {
4153 CAMLparam3 (ptr_v, n_v, str_v);
4154 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
4155
4156 if (pdf) {
4157 struct page *page;
4158 char *s = String_val (ptr_v);
4159 struct slink *slink;
4160
4161 page = parse_pointer ("ml_modannot", s);
4162 slink = &page->slinks[Int_val (n_v)];
4163 pdf_set_annot_contents (state.ctx, pdf, (pdf_annot *) slink->u.annot,
4164 String_val (str_v));
4165 state.dirty = 1;
4166 }
4167 CAMLreturn (Val_unit);
4168 }
4169
4170 CAMLprim value ml_hasunsavedchanges (value unit_v)
4171 {
4172 CAMLparam1 (unit_v);
4173 CAMLreturn (Val_bool (state.dirty));
4174 }
4175
4176 CAMLprim value ml_savedoc (value path_v)
4177 {
4178 CAMLparam1 (path_v);
4179 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
4180
4181 if (pdf) {
4182 pdf_write_document (state.ctx, pdf, String_val (path_v), NULL);
4183 }
4184 CAMLreturn (Val_unit);
4185 }
4186
4187 static void makestippletex (void)
4188 {
4189 const char pixels[] = "\xff\xff\0\0";
4190 glGenTextures (1, &state.stid);
4191 glBindTexture (GL_TEXTURE_1D, state.stid);
4192 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
4193 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
4194 glTexImage1D (
4195 GL_TEXTURE_1D,
4196 0,
4197 GL_ALPHA,
4198 4,
4199 0,
4200 GL_ALPHA,
4201 GL_UNSIGNED_BYTE,
4202 pixels
4203 );
4204 }
4205
4206 CAMLprim value ml_fz_version (value UNUSED_ATTR unit_v)
4207 {
4208 return caml_copy_string (FZ_VERSION);
4209 }
4210
4211 #ifdef USE_FONTCONFIG
4212 static struct {
4213 int inited;
4214 FcConfig *config;
4215 } fc;
4216
4217 static fz_font *fc_load_system_font_func (fz_context *ctx,
4218 const char *name,
4219 int bold,
4220 int italic,
4221 int UNUSED_ATTR needs_exact_metrics)
4222 {
4223 char *buf;
4224 size_t i, size;
4225 fz_font *font;
4226 FcChar8 *path;
4227 FcResult result;
4228 FcPattern *pat, *pat1;
4229
4230 lprintf ("looking up %s bold:%d italic:%d needs_exact_metrics:%d\n",
4231 name, bold, italic, needs_exact_metrics);
4232 if (!fc.inited) {
4233 fc.inited = 1;
4234 fc.config = FcInitLoadConfigAndFonts ();
4235 if (!fc.config) {
4236 lprintf ("FcInitLoadConfigAndFonts failed\n");
4237 return NULL;
4238 }
4239 }
4240 if (!fc.config) return NULL;
4241
4242 size = strlen (name);
4243 if (bold) size += sizeof (":bold") - 1;
4244 if (italic) size += sizeof (":italic") - 1;
4245 size += 1;
4246
4247 buf = malloc (size);
4248 if (!buf) {
4249 err (1, "malloc %zu failed", size);
4250 }
4251
4252 strcpy (buf, name);
4253 if (bold && italic) {
4254 strcat (buf, ":bold:italic");
4255 }
4256 else {
4257 if (bold) strcat (buf, ":bold");
4258 if (italic) strcat (buf, ":italic");
4259 }
4260 for (i = 0; i < size; ++i) {
4261 if (buf[i] == ',' || buf[i] == '-') buf[i] = ':';
4262 }
4263
4264 lprintf ("fcbuf=%s\n", buf);
4265 pat = FcNameParse ((FcChar8 *) buf);
4266 if (!pat) {
4267 printd ("emsg FcNameParse failed\n");
4268 free (buf);
4269 return NULL;
4270 }
4271
4272 if (!FcConfigSubstitute (fc.config, pat, FcMatchPattern)) {
4273 printd ("emsg FcConfigSubstitute failed\n");
4274 free (buf);
4275 return NULL;
4276 }
4277 FcDefaultSubstitute (pat);
4278
4279 pat1 = FcFontMatch (fc.config, pat, &result);
4280 if (!pat1) {
4281 printd ("emsg FcFontMatch failed\n");
4282 FcPatternDestroy (pat);
4283 free (buf);
4284 return NULL;
4285 }
4286
4287 if (FcPatternGetString (pat1, FC_FILE, 0, &path) != FcResultMatch) {
4288 printd ("emsg FcPatternGetString failed\n");
4289 FcPatternDestroy (pat);
4290 FcPatternDestroy (pat1);
4291 free (buf);
4292 return NULL;
4293 }
4294
4295 #if 0
4296 printd ("emsg name=%s path=%s\n", name, path);
4297 #endif
4298 font = fz_new_font_from_file (ctx, name, (char *) path, 0, 0);
4299 FcPatternDestroy (pat);
4300 FcPatternDestroy (pat1);
4301 free (buf);
4302 return font;
4303 }
4304 #endif
4305
4306 CAMLprim value ml_init (value csock_v, value params_v)
4307 {
4308 CAMLparam2 (csock_v, params_v);
4309 CAMLlocal2 (trim_v, fuzz_v);
4310 int ret;
4311 int texcount;
4312 char *fontpath;
4313 int colorspace;
4314 int mustoresize;
4315 int haspboext;
4316
4317 state.csock = Int_val (csock_v);
4318 state.rotate = Int_val (Field (params_v, 0));
4319 state.fitmodel = Int_val (Field (params_v, 1));
4320 trim_v = Field (params_v, 2);
4321 texcount = Int_val (Field (params_v, 3));
4322 state.sliceheight = Int_val (Field (params_v, 4));
4323 mustoresize = Int_val (Field (params_v, 5));
4324 colorspace = Int_val (Field (params_v, 6));
4325 fontpath = String_val (Field (params_v, 7));
4326
4327 if (caml_string_length (Field (params_v, 8)) > 0) {
4328 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
4329
4330 if (!state.trimcachepath) {
4331 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
4332 strerror (errno));
4333 }
4334 }
4335 haspboext = Bool_val (Field (params_v, 9));
4336
4337 state.ctx = fz_new_context (NULL, NULL, mustoresize);
4338 fz_register_document_handlers (state.ctx);
4339
4340 #ifdef USE_FONTCONFIG
4341 if (Bool_val (Field (params_v, 10))) {
4342 fz_install_load_system_font_funcs (
4343 state.ctx, fc_load_system_font_func, NULL
4344 );
4345 }
4346 #endif
4347
4348 state.trimmargins = Bool_val (Field (trim_v, 0));
4349 fuzz_v = Field (trim_v, 1);
4350 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
4351 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
4352 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
4353 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
4354
4355 set_tex_params (colorspace);
4356
4357 if (*fontpath) {
4358 #ifndef USE_FONTCONFIG
4359 state.face = load_font (fontpath);
4360 #else
4361 FcChar8 *path;
4362 FcResult result;
4363 char *buf = fontpath;
4364 FcPattern *pat, *pat1;
4365
4366 fc.inited = 1;
4367 fc.config = FcInitLoadConfigAndFonts ();
4368 if (!fc.config) {
4369 errx (1, "FcInitLoadConfigAndFonts failed");
4370 }
4371
4372 pat = FcNameParse ((FcChar8 *) buf);
4373 if (!pat) {
4374 errx (1, "FcNameParse failed");
4375 }
4376
4377 if (!FcConfigSubstitute (fc.config, pat, FcMatchPattern)) {
4378 errx (1, "FcConfigSubstitute failed");
4379 }
4380 FcDefaultSubstitute (pat);
4381
4382 pat1 = FcFontMatch (fc.config, pat, &result);
4383 if (!pat1) {
4384 errx (1, "FcFontMatch failed");
4385 }
4386
4387 if (FcPatternGetString (pat1, FC_FILE, 0, &path) != FcResultMatch) {
4388 errx (1, "FcPatternGetString failed");
4389 }
4390
4391 state.face = load_font ((char *) path);
4392 FcPatternDestroy (pat);
4393 FcPatternDestroy (pat1);
4394 #endif
4395 }
4396 else {
4397 unsigned int len;
4398 void *base = pdf_lookup_substitute_font (state.ctx, 0, 0, 0, 0, &len);
4399
4400 state.face = load_builtin_font (base, len);
4401 }
4402 if (!state.face) _exit (1);
4403
4404 realloctexts (texcount);
4405
4406 if (haspboext) {
4407 setuppbo ();
4408 }
4409
4410 makestippletex ();
4411
4412 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
4413 if (ret) {
4414 errx (1, "pthread_create: %s", strerror (ret));
4415 }
4416
4417 CAMLreturn (Val_unit);
4418 }
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