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Remove stderr redirection code
[llpp.git] / link.c
blob137691c30ca34ecb3aebcad310ce2a05cac357ec
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 #include <mupdf/fitz.h>
40 #pragma GCC diagnostic pop
41 #include <mupdf/pdf.h>
42
43 #include <ft2build.h>
44 #include FT_FREETYPE_H
45
46 #ifdef USE_FONTCONFIG
47 #include <fontconfig/fontconfig.h>
48 #endif
49
50 #define PIGGYBACK
51 #define CACHE_PAGEREFS
52
53 #ifndef __USE_GNU
54 extern char **environ;
55 #endif
56
57 #define MIN(a,b) ((a) < (b) ? (a) : (b))
58 #define MAX(a,b) ((a) > (b) ? (a) : (b))
59
60 #if defined __GNUC__
61 #define NORETURN_ATTR __attribute__ ((noreturn))
62 #define UNUSED_ATTR __attribute__ ((unused))
63 #if !defined __clang__
64 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
65 #else
66 #define OPTIMIZE_ATTR(n)
67 #endif
68 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
69 #else
70 #define NORETURN_ATTR
71 #define UNUSED_ATTR
72 #define OPTIMIZE_ATTR(n)
73 #define GCC_FMT_ATTR(a, b)
74 #endif
75
76 #define FMT_s "zu"
77
78 #define FMT_ptr PRIxPTR
79 #define SCN_ptr SCNxPTR
80 #define FMT_ptr_cast(p) ((uintptr_t) (p))
81 #define SCN_ptr_cast(p) ((uintptr_t *) (p))
82
83 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
84 err (int exitcode, const char *fmt, ...)
85 {
86 va_list ap;
87 int savederrno;
88
89 savederrno = errno;
90 va_start (ap, fmt);
91 vfprintf (stderr, fmt, ap);
92 va_end (ap);
93 fprintf (stderr, ": %s\n", strerror (savederrno));
94 fflush (stderr);
95 _exit (exitcode);
96 }
97
98 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
99 errx (int exitcode, const char *fmt, ...)
100 {
101 va_list ap;
102
103 va_start (ap, fmt);
104 vfprintf (stderr, fmt, ap);
105 va_end (ap);
106 fputc ('\n', stderr);
107 fflush (stderr);
108 _exit (exitcode);
109 }
110
111 #ifndef GL_TEXTURE_RECTANGLE_ARB
112 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
113 #endif
114
115 #ifndef GL_BGRA
116 #define GL_BGRA 0x80E1
117 #endif
118
119 #ifndef GL_UNSIGNED_INT_8_8_8_8
120 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
121 #endif
122
123 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
124 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
125 #endif
126
127 #if 0
128 #define lprintf printf
129 #else
130 #define lprintf(...)
131 #endif
132
133 #define ARSERT(cond) for (;;) { \
134 if (!(cond)) { \
135 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
136 } \
137 break; \
138 }
139
140 struct slice {
141 int h;
142 int texindex;
143 };
144
145 struct tile {
146 int w, h;
147 int slicecount;
148 int sliceheight;
149 struct pbo *pbo;
150 fz_pixmap *pixmap;
151 struct slice slices[1];
152 };
153
154 struct pagedim {
155 int pageno;
156 int rotate;
157 int left;
158 int tctmready;
159 fz_irect bounds;
160 fz_rect pagebox;
161 fz_rect mediabox;
162 fz_matrix ctm, zoomctm, lctm, tctm;
163 };
164
165 struct slink {
166 enum { SLINK, SANNOT } tag;
167 fz_irect bbox;
168 union {
169 fz_link *link;
170 fz_annot *annot;
171 } u;
172 };
173
174 struct annot {
175 fz_irect bbox;
176 fz_annot *annot;
177 };
178
179 struct page {
180 int tgen;
181 int sgen;
182 int agen;
183 int pageno;
184 int pdimno;
185 fz_text_page *text;
186 fz_text_sheet *sheet;
187 fz_page *fzpage;
188 fz_display_list *dlist;
189 int slinkcount;
190 struct slink *slinks;
191 int annotcount;
192 struct annot *annots;
193 struct mark {
194 int i;
195 fz_text_span *span;
196 } fmark, lmark;
197 };
198
199 struct {
200 int sliceheight;
201 struct pagedim *pagedims;
202 int pagecount;
203 int pagedimcount;
204 fz_document *doc;
205 fz_context *ctx;
206 int w, h;
207
208 int texindex;
209 int texcount;
210 GLuint *texids;
211
212 GLenum texiform;
213 GLenum texform;
214 GLenum texty;
215
216 fz_colorspace *colorspace;
217
218 struct {
219 int w, h;
220 struct slice *slice;
221 } *texowners;
222
223 int rotate;
224 enum { FitWidth, FitProportional, FitPage } fitmodel;
225 int trimmargins;
226 int needoutline;
227 int gen;
228 int aalevel;
229
230 int trimanew;
231 fz_irect trimfuzz;
232 fz_pixmap *pig;
233
234 pthread_t thread;
235 int csock;
236 FT_Face face;
237
238 char *trimcachepath;
239 int cxack;
240 int dirty;
241
242 GLuint stid;
243
244 int pbo_usable;
245 void (*glBindBufferARB) (GLenum, GLuint);
246 GLboolean (*glUnmapBufferARB) (GLenum);
247 void *(*glMapBufferARB) (GLenum, GLenum);
248 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
249 void (*glGenBuffersARB) (GLsizei, GLuint *);
250 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
251
252 GLfloat texcoords[8];
253 GLfloat vertices[16];
254
255 #ifdef CACHE_PAGEREFS
256 struct {
257 int idx;
258 int count;
259 pdf_obj **objs;
260 pdf_document *pdf;
261 } pdflut;
262 #endif
263 } state;
264
265 struct pbo {
266 GLuint id;
267 void *ptr;
268 size_t size;
269 };
270
271 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
272 {
273 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
274 }
275
276 static void UNUSED_ATTR debug_bbox (const char *cap, fz_irect r)
277 {
278 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
279 }
280
281 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
282 {
283 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
284 m.a, m.b, m.c, m.d, m.e, m.f);
285 }
286
287 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
288
289 static void lock (const char *cap)
290 {
291 int ret = pthread_mutex_lock (&mutex);
292 if (ret) {
293 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
294 }
295 }
296
297 static void unlock (const char *cap)
298 {
299 int ret = pthread_mutex_unlock (&mutex);
300 if (ret) {
301 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
302 }
303 }
304
305 static int trylock (const char *cap)
306 {
307 int ret = pthread_mutex_trylock (&mutex);
308 if (ret && ret != EBUSY) {
309 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
310 }
311 return ret == EBUSY;
312 }
313
314 static void *parse_pointer (const char *cap, const char *s)
315 {
316 int ret;
317 void *ptr;
318
319 ret = sscanf (s, "%" SCN_ptr, SCN_ptr_cast (&ptr));
320 if (ret != 1) {
321 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
322 }
323 return ptr;
324 }
325
326 static double now (void)
327 {
328 struct timeval tv;
329
330 if (gettimeofday (&tv, NULL)) {
331 err (1, "gettimeofday");
332 }
333 return tv.tv_sec + tv.tv_usec*1e-6;
334 }
335
336 static int hasdata (void)
337 {
338 int ret, avail;
339 ret = ioctl (state.csock, FIONREAD, &avail);
340 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
341 return avail > 0;
342 }
343
344 CAMLprim value ml_hasdata (value fd_v)
345 {
346 CAMLparam1 (fd_v);
347 int ret, avail;
348
349 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
350 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
351 CAMLreturn (Val_bool (avail > 0));
352 }
353
354 static void readdata (void *p, int size)
355 {
356 ssize_t n;
357
358 again:
359 n = read (state.csock, p, size);
360 if (n < 0) {
361 if (errno == EINTR) goto again;
362 err (1, "read (req %d, ret %zd)", size, n);
363 }
364 if (n - size) {
365 if (!n) errx (1, "EOF while reading");
366 errx (1, "read (req %d, ret %zd)", size, n);
367 }
368 }
369
370 static void writedata (char *p, int size)
371 {
372 ssize_t n;
373
374 p[0] = (size >> 24) & 0xff;
375 p[1] = (size >> 16) & 0xff;
376 p[2] = (size >> 8) & 0xff;
377 p[3] = (size >> 0) & 0xff;
378
379 n = write (state.csock, p, size + 4);
380 if (n - size - 4) {
381 if (!n) errx (1, "EOF while writing data");
382 err (1, "write (req %d, ret %zd)", size + 4, n);
383 }
384 }
385
386 static int readlen (void)
387 {
388 unsigned char p[4];
389
390 readdata (p, 4);
391 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
392 }
393
394 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
395 {
396 int size = 200, len;
397 va_list ap;
398 char *buf;
399
400 buf = malloc (size);
401 for (;;) {
402 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
403
404 va_start (ap, fmt);
405 len = vsnprintf (buf + 4, size - 4, fmt, ap);
406 va_end (ap);
407
408 if (len > -1) {
409 if (len < size - 4) {
410 writedata (buf, len);
411 break;
412 }
413 else size = len + 5;
414 }
415 else {
416 err (1, "vsnprintf for `%s' failed", fmt);
417 }
418 buf = realloc (buf, size);
419 }
420 free (buf);
421 }
422
423 static void closedoc (void)
424 {
425 #ifdef CACHE_PAGEREFS
426 if (state.pdflut.objs) {
427 int i;
428
429 for (i = 0; i < state.pdflut.count; ++i) {
430 pdf_drop_obj (state.ctx, state.pdflut.objs[i]);
431 }
432 free (state.pdflut.objs);
433 state.pdflut.objs = NULL;
434 state.pdflut.idx = 0;
435 }
436 #endif
437 if (state.doc) {
438 fz_drop_document (state.ctx, state.doc);
439 state.doc = NULL;
440 }
441 }
442
443 static int openxref (char *filename, char *password)
444 {
445 int i;
446
447 for (i = 0; i < state.texcount; ++i) {
448 state.texowners[i].w = -1;
449 state.texowners[i].slice = NULL;
450 }
451
452 closedoc ();
453
454 state.dirty = 0;
455 if (state.pagedims) {
456 free (state.pagedims);
457 state.pagedims = NULL;
458 }
459 state.pagedimcount = 0;
460
461 fz_set_aa_level (state.ctx, state.aalevel);
462 state.doc = fz_open_document (state.ctx, filename);
463 if (fz_needs_password (state.ctx, state.doc)) {
464 if (password && !*password) {
465 printd ("pass");
466 return 0;
467 }
468 else {
469 int ok = fz_authenticate_password (state.ctx, state.doc, password);
470 if (!ok) {
471 printd ("pass fail");
472 return 0;
473 }
474 }
475 }
476 state.pagecount = fz_count_pages (state.ctx, state.doc);
477 return 1;
478 }
479
480 static void pdfinfo (void)
481 {
482 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
483 if (pdf) {
484 pdf_obj *infoobj;
485
486 printd ("info PDF version\t%d.%d",
487 pdf->version / 10, pdf->version % 10);
488
489 infoobj = pdf_dict_gets (state.ctx, pdf_trailer (state.ctx,
490 pdf), "Info");
491 if (infoobj) {
492 unsigned int i;
493 char *s;
494 char *items[] = { "Title", "Author", "Creator",
495 "Producer", "CreationDate" };
496
497 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
498 pdf_obj *obj = pdf_dict_gets (state.ctx, infoobj, items[i]);
499 s = pdf_to_utf8 (state.ctx, pdf, obj);
500 if (*s) printd ("info %s\t%s", items[i], s);
501 fz_free (state.ctx, s);
502 }
503 }
504 printd ("infoend");
505 }
506 }
507
508 static void unlinktile (struct tile *tile)
509 {
510 int i;
511
512 for (i = 0; i < tile->slicecount; ++i) {
513 struct slice *s = &tile->slices[i];
514
515 if (s->texindex != -1) {
516 if (state.texowners[s->texindex].slice == s) {
517 state.texowners[s->texindex].slice = NULL;
518 }
519 }
520 }
521 }
522
523 static void freepage (struct page *page)
524 {
525 if (!page) return;
526 if (page->text) {
527 fz_drop_text_page (state.ctx, page->text);
528 }
529 if (page->sheet) {
530 fz_drop_text_sheet (state.ctx, page->sheet);
531 }
532 if (page->slinks) {
533 free (page->slinks);
534 }
535 fz_drop_display_list (state.ctx, page->dlist);
536 fz_drop_page (state.ctx, page->fzpage);
537 free (page);
538 }
539
540 static void freetile (struct tile *tile)
541 {
542 unlinktile (tile);
543 if (!tile->pbo) {
544 #ifndef PIGGYBACK
545 fz_drop_pixmap (state.ctx, tile->pixmap);
546 #else
547 if (state.pig) {
548 fz_drop_pixmap (state.ctx, state.pig);
549 }
550 state.pig = tile->pixmap;
551 #endif
552 }
553 else {
554 free (tile->pbo);
555 fz_drop_pixmap (state.ctx, tile->pixmap);
556 }
557 free (tile);
558 }
559
560 #ifdef __ALTIVEC__
561 #include <stdint.h>
562 #include <altivec.h>
563
564 static int cacheline32bytes;
565
566 static void __attribute__ ((constructor)) clcheck (void)
567 {
568 char **envp = environ;
569 unsigned long *auxv;
570
571 while (*envp++);
572
573 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
574 if (*auxv == 19) {
575 cacheline32bytes = auxv[1] == 32;
576 return;
577 }
578 }
579 }
580
581 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
582 {
583 size_t size = pixmap->w * pixmap->h * pixmap->n;
584 if (cacheline32bytes && size > 32) {
585 intptr_t a1, a2, diff;
586 size_t sizea, i;
587 vector unsigned char v = vec_splat_u8 (-1);
588 vector unsigned char *p;
589
590 a1 = a2 = (intptr_t) pixmap->samples;
591 a2 = (a1 + 31) & ~31;
592 diff = a2 - a1;
593 sizea = size - diff;
594 p = (void *) a2;
595
596 while (a1 != a2) *(char *) a1++ = 0xff;
597 for (i = 0; i < (sizea & ~31); i += 32) {
598 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
599 vec_st (v, i, p);
600 vec_st (v, i + 16, p);
601 }
602 while (i < sizea) *((char *) a1 + i++) = 0xff;
603 }
604 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
605 }
606 #else
607 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
608 #endif
609
610 static void trimctm (pdf_page *page, int pindex)
611 {
612 fz_matrix ctm;
613 struct pagedim *pdim = &state.pagedims[pindex];
614
615 if (!pdim->tctmready) {
616 if (state.trimmargins) {
617 fz_rect realbox;
618 fz_matrix rm, sm, tm, im, ctm1;
619
620 fz_rotate (&rm, -pdim->rotate);
621 fz_scale (&sm, 1, -1);
622 fz_concat (&ctm, &rm, &sm);
623 realbox = pdim->mediabox;
624 fz_transform_rect (&realbox, &ctm);
625 fz_translate (&tm, -realbox.x0, -realbox.y0);
626 fz_concat (&ctm1, &ctm, &tm);
627 fz_invert_matrix (&im, &page->ctm);
628 fz_concat (&ctm, &im, &ctm1);
629 }
630 else {
631 ctm = fz_identity;
632 }
633 pdim->tctm = ctm;
634 pdim->tctmready = 1;
635 }
636 }
637
638 static fz_matrix pagectm1 (fz_page *fzpage, struct pagedim *pdim)
639 {
640 fz_matrix ctm, tm;
641 int pdimno = pdim - state.pagedims;
642
643 if (pdf_specifics (state.ctx, state.doc)) {
644 trimctm ((pdf_page *) fzpage, pdimno);
645 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
646 }
647 else {
648 fz_translate (&tm, -pdim->mediabox.x0, -pdim->mediabox.y0);
649 fz_concat (&ctm, &tm, &pdim->ctm);
650 }
651 return ctm;
652 }
653
654 static fz_matrix pagectm (struct page *page)
655 {
656 return pagectm1 (page->fzpage, &state.pagedims[page->pdimno]);
657 }
658
659 static void *loadpage (int pageno, int pindex)
660 {
661 fz_device *dev;
662 struct page *page;
663
664 page = calloc (sizeof (struct page), 1);
665 if (!page) {
666 err (1, "calloc page %d", pageno);
667 }
668
669 page->dlist = fz_new_display_list (state.ctx);
670 dev = fz_new_list_device (state.ctx, page->dlist);
671 fz_try (state.ctx) {
672 page->fzpage = fz_load_page (state.ctx, state.doc, pageno);
673 fz_run_page (state.ctx, page->fzpage, dev,
674 &fz_identity, NULL);
675 }
676 fz_catch (state.ctx) {
677 page->fzpage = NULL;
678 }
679 fz_drop_device (state.ctx, dev);
680
681 page->pdimno = pindex;
682 page->pageno = pageno;
683 page->sgen = state.gen;
684 page->agen = state.gen;
685 page->tgen = state.gen;
686 return page;
687 }
688
689 static struct tile *alloctile (int h)
690 {
691 int i;
692 int slicecount;
693 size_t tilesize;
694 struct tile *tile;
695
696 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
697 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
698 tile = calloc (tilesize, 1);
699 if (!tile) {
700 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
701 }
702 for (i = 0; i < slicecount; ++i) {
703 int sh = MIN (h, state.sliceheight);
704 tile->slices[i].h = sh;
705 tile->slices[i].texindex = -1;
706 h -= sh;
707 }
708 tile->slicecount = slicecount;
709 tile->sliceheight = state.sliceheight;
710 return tile;
711 }
712
713 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
714 struct pbo *pbo)
715 {
716 fz_rect rect;
717 fz_irect bbox;
718 fz_matrix ctm;
719 fz_device *dev;
720 struct tile *tile;
721 struct pagedim *pdim;
722
723 tile = alloctile (h);
724 pdim = &state.pagedims[page->pdimno];
725
726 bbox = pdim->bounds;
727 bbox.x0 += x;
728 bbox.y0 += y;
729 bbox.x1 = bbox.x0 + w;
730 bbox.y1 = bbox.y0 + h;
731
732 if (state.pig) {
733 if (state.pig->w == w
734 && state.pig->h == h
735 && state.pig->colorspace == state.colorspace) {
736 tile->pixmap = state.pig;
737 tile->pixmap->x = bbox.x0;
738 tile->pixmap->y = bbox.y0;
739 }
740 else {
741 fz_drop_pixmap (state.ctx, state.pig);
742 }
743 state.pig = NULL;
744 }
745 if (!tile->pixmap) {
746 if (pbo) {
747 tile->pixmap =
748 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
749 &bbox, pbo->ptr);
750 tile->pbo = pbo;
751 }
752 else {
753 tile->pixmap =
754 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox);
755 }
756 }
757
758 tile->w = w;
759 tile->h = h;
760 clearpixmap (tile->pixmap);
761
762 dev = fz_new_draw_device (state.ctx, tile->pixmap);
763 ctm = pagectm (page);
764 fz_rect_from_irect (&rect, &bbox);
765 fz_run_display_list (state.ctx, page->dlist, dev, &ctm, &rect, NULL);
766 fz_drop_device (state.ctx, dev);
767
768 return tile;
769 }
770
771 #ifdef CACHE_PAGEREFS
772 /* modified mupdf/source/pdf/pdf-page.c:pdf_lookup_page_loc_imp
773 thanks to Robin Watts */
774 static void
775 pdf_collect_pages(pdf_document *doc, pdf_obj *node)
776 {
777 fz_context *ctx = state.ctx; /* doc->ctx; */
778 pdf_obj *kids;
779 int i, len;
780
781 if (state.pdflut.idx == state.pagecount) return;
782
783 kids = pdf_dict_gets (ctx, node, "Kids");
784 len = pdf_array_len (ctx, kids);
785
786 if (len == 0)
787 fz_throw (ctx, FZ_ERROR_GENERIC, "Malformed pages tree");
788
789 if (pdf_mark_obj (ctx, node))
790 fz_throw (ctx, FZ_ERROR_GENERIC, "cycle in page tree");
791 for (i = 0; i < len; i++) {
792 pdf_obj *kid = pdf_array_get (ctx, kids, i);
793 char *type = pdf_to_name (ctx, pdf_dict_gets (ctx, kid, "Type"));
794 if (*type
795 ? !strcmp (type, "Pages")
796 : pdf_dict_gets (ctx, kid, "Kids")
797 && !pdf_dict_gets (ctx, kid, "MediaBox")) {
798 pdf_collect_pages (doc, kid);
799 }
800 else {
801 if (*type
802 ? strcmp (type, "Page") != 0
803 : !pdf_dict_gets (ctx, kid, "MediaBox"))
804 fz_warn (ctx, "non-page object in page tree (%s)", type);
805 state.pdflut.objs[state.pdflut.idx++] = pdf_keep_obj (ctx, kid);
806 }
807 }
808 pdf_unmark_obj (ctx, node);
809 }
810
811 static void
812 pdf_load_page_objs (pdf_document *doc)
813 {
814 pdf_obj *root = pdf_dict_gets (state.ctx,
815 pdf_trailer (state.ctx, doc), "Root");
816 pdf_obj *node = pdf_dict_gets (state.ctx, root, "Pages");
817
818 if (!node)
819 fz_throw (state.ctx, FZ_ERROR_GENERIC, "cannot find page tree");
820
821 state.pdflut.idx = 0;
822 pdf_collect_pages (doc, node);
823 }
824 #endif
825
826 static void initpdims (void)
827 {
828 double start, end;
829 FILE *trimf = NULL;
830 fz_rect rootmediabox;
831 int pageno, trim, show;
832 int trimw = 0, cxcount;
833 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
834
835 start = now ();
836
837 if (state.trimmargins && state.trimcachepath) {
838 trimf = fopen (state.trimcachepath, "rb");
839 if (!trimf) {
840 trimf = fopen (state.trimcachepath, "wb");
841 trimw = 1;
842 }
843 }
844
845 if (state.trimmargins || pdf || !state.cxack)
846 cxcount = state.pagecount;
847 else
848 cxcount = MIN (state.pagecount, 1);
849
850 if (pdf) {
851 pdf_obj *obj;
852 obj = pdf_dict_getp (state.ctx, pdf_trailer (state.ctx, pdf),
853 "Root/Pages/MediaBox");
854 pdf_to_rect (state.ctx, obj, &rootmediabox);
855 }
856
857 #ifdef CACHE_PAGEREFS
858 if (pdf && (!state.pdflut.objs || state.pdflut.pdf != pdf)) {
859 state.pdflut.objs = calloc (sizeof (*state.pdflut.objs), cxcount);
860 if (!state.pdflut.objs) {
861 err (1, "malloc pageobjs %zu %d %zu failed",
862 sizeof (*state.pdflut.objs), cxcount,
863 sizeof (*state.pdflut.objs) * cxcount);
864 }
865 state.pdflut.count = cxcount;
866 pdf_load_page_objs (pdf);
867 state.pdflut.pdf = pdf;
868 }
869 #endif
870
871 for (pageno = 0; pageno < cxcount; ++pageno) {
872 int rotate = 0;
873 struct pagedim *p;
874 fz_rect mediabox;
875
876 if (pdf) {
877 pdf_obj *pageref, *pageobj;
878
879 #ifdef CACHE_PAGEREFS
880 pageref = state.pdflut.objs[pageno];
881 #else
882 pageref = pdf_lookup_page_obj (state.ctx, pdf, pageno);
883 #endif
884 pageobj = pdf_resolve_indirect (state.ctx, pageref);
885
886 if (state.trimmargins) {
887 fz_context *ctx = state.ctx;
888 pdf_obj *obj;
889 pdf_page *page;
890
891 fz_try (state.ctx) {
892 page = pdf_load_page (ctx, pdf, pageno);
893 obj = pdf_dict_gets (ctx, pageobj, "llpp.TrimBox");
894 trim = state.trimanew || !obj;
895 if (trim) {
896 fz_rect rect;
897 fz_matrix ctm;
898 fz_device *dev;
899
900 dev = fz_new_bbox_device (ctx, &rect);
901 dev->hints |= FZ_IGNORE_SHADE;
902 fz_invert_matrix (&ctm, &page->ctm);
903 pdf_run_page (ctx, page, dev, &fz_identity, NULL);
904 fz_drop_device (ctx, dev);
905
906 rect.x0 += state.trimfuzz.x0;
907 rect.x1 += state.trimfuzz.x1;
908 rect.y0 += state.trimfuzz.y0;
909 rect.y1 += state.trimfuzz.y1;
910 fz_transform_rect (&rect, &ctm);
911 fz_intersect_rect (&rect, &page->mediabox);
912
913 if (fz_is_empty_rect (&rect)) {
914 mediabox = page->mediabox;
915 }
916 else {
917 mediabox = rect;
918 }
919
920 obj = pdf_new_array (ctx, pdf, 4);
921 pdf_array_push (ctx, obj, pdf_new_real (state.ctx, pdf,
922 mediabox.x0));
923 pdf_array_push (ctx, obj, pdf_new_real (state.ctx, pdf,
924 mediabox.y0));
925 pdf_array_push (ctx, obj, pdf_new_real (state.ctx, pdf,
926 mediabox.x1));
927 pdf_array_push (ctx, obj, pdf_new_real (state.ctx, pdf,
928 mediabox.y1));
929 pdf_dict_puts (state.ctx, pageobj, "llpp.TrimBox", obj);
930 }
931 else {
932 mediabox.x0 = pdf_to_real (ctx,
933 pdf_array_get (ctx, obj, 0));
934 mediabox.y0 = pdf_to_real (ctx,
935 pdf_array_get (ctx, obj, 1));
936 mediabox.x1 = pdf_to_real (ctx,
937 pdf_array_get (ctx, obj, 2));
938 mediabox.y1 = pdf_to_real (ctx,
939 pdf_array_get (ctx, obj, 3));
940 }
941
942 rotate = page->rotate;
943 fz_drop_page (ctx, &page->super);
944
945 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
946 if (show) {
947 printd ("progress %f Trimming %d",
948 (double) (pageno + 1) / state.pagecount,
949 pageno + 1);
950 }
951 }
952 fz_catch (state.ctx) {
953 fprintf (stderr, "failed to load page %d\n", pageno+1);
954 }
955 }
956 else {
957 int empty = 0;
958 fz_rect cropbox;
959
960 pdf_to_rect (state.ctx,
961 pdf_dict_gets (state.ctx, pageobj, "MediaBox"),
962 &mediabox);
963 if (fz_is_empty_rect (&mediabox)) {
964 mediabox.x0 = 0;
965 mediabox.y0 = 0;
966 mediabox.x1 = 612;
967 mediabox.y1 = 792;
968 empty = 1;
969 }
970
971 pdf_to_rect (state.ctx,
972 pdf_dict_gets (state.ctx, pageobj, "CropBox"),
973 &cropbox);
974 if (!fz_is_empty_rect (&cropbox)) {
975 if (empty) {
976 mediabox = cropbox;
977 }
978 else {
979 fz_intersect_rect (&mediabox, &cropbox);
980 }
981 }
982 else {
983 if (empty) {
984 if (fz_is_empty_rect (&rootmediabox)) {
985 fprintf (stderr,
986 "cannot find page size for page %d\n",
987 pageno+1);
988 }
989 else {
990 mediabox = rootmediabox;
991 }
992 }
993 }
994 rotate = pdf_to_int (state.ctx,
995 pdf_dict_gets (state.ctx,
996 pageobj, "Rotate"));
997 }
998 }
999 else {
1000 if (state.trimmargins && trimw) {
1001 fz_page *page;
1002
1003 fz_try (state.ctx) {
1004 page = fz_load_page (state.ctx, state.doc, pageno);
1005 fz_bound_page (state.ctx, page, &mediabox);
1006 rotate = 0;
1007 if (state.trimmargins) {
1008 fz_rect rect;
1009 fz_device *dev;
1010
1011 dev = fz_new_bbox_device (state.ctx, &rect);
1012 dev->hints |= FZ_IGNORE_SHADE;
1013 fz_run_page (state.ctx, page, dev,
1014 &fz_identity, NULL);
1015 fz_drop_device (state.ctx, dev);
1016
1017 rect.x0 += state.trimfuzz.x0;
1018 rect.x1 += state.trimfuzz.x1;
1019 rect.y0 += state.trimfuzz.y0;
1020 rect.y1 += state.trimfuzz.y1;
1021 fz_intersect_rect (&rect, &mediabox);
1022
1023 if (!fz_is_empty_rect (&rect)) {
1024 mediabox = rect;
1025 }
1026 }
1027 fz_drop_page (state.ctx, page);
1028 if (!state.cxack) {
1029 printd ("progress %f loading %d",
1030 (double) (pageno + 1) / state.pagecount,
1031 pageno + 1);
1032 }
1033 }
1034 fz_catch (state.ctx) {
1035 }
1036 if (trimf) {
1037 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1038 if (n - 1) {
1039 err (1, "fwrite trim mediabox");
1040 }
1041 }
1042 }
1043 else {
1044 if (trimf) {
1045 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1046 if (n - 1) {
1047 err (1, "fread trim mediabox %d", pageno);
1048 }
1049 }
1050 else {
1051 fz_page *page;
1052 fz_try (state.ctx) {
1053 page = fz_load_page (state.ctx,
1054 state.doc, pageno);
1055 fz_bound_page (state.ctx, page, &mediabox);
1056 fz_drop_page (state.ctx, page);
1057
1058 show = !state.trimmargins && pageno % 20 == 0;
1059 if (show) {
1060 printd ("progress %f Gathering dimensions %d",
1061 (double) (pageno) / state.pagecount,
1062 pageno);
1063 }
1064 }
1065 fz_catch (state.ctx) {
1066 fprintf (stderr, "failed to load page %d\n", pageno);
1067 }
1068 }
1069 }
1070 }
1071
1072 if (state.pagedimcount == 0
1073 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1074 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1075 size_t size;
1076
1077 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1078 state.pagedims = realloc (state.pagedims, size);
1079 if (!state.pagedims) {
1080 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1081 size, state.pagedimcount + 1);
1082 }
1083
1084 p = &state.pagedims[state.pagedimcount++];
1085 p->rotate = rotate;
1086 p->mediabox = mediabox;
1087 p->pageno = pageno;
1088 }
1089 }
1090 end = now ();
1091 printd ("progress 1 %s %d pages in %f seconds",
1092 state.trimmargins ? "Trimmed" : "Processed",
1093 state.pagecount, end - start);
1094 state.trimanew = 0;
1095 if (trimf) {
1096 if (fclose (trimf)) {
1097 err (1, "fclose");
1098 }
1099 }
1100 }
1101
1102 static void layout (void)
1103 {
1104 int pindex;
1105 fz_rect box;
1106 fz_matrix ctm, rm;
1107 struct pagedim *p = p;
1108 double zw, w, maxw = 0.0, zoom = zoom;
1109
1110 if (state.pagedimcount == 0) return;
1111
1112 switch (state.fitmodel) {
1113 case FitProportional:
1114 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1115 double x0, x1;
1116
1117 p = &state.pagedims[pindex];
1118 fz_rotate (&rm, p->rotate + state.rotate);
1119 box = p->mediabox;
1120 fz_transform_rect (&box, &rm);
1121
1122 x0 = MIN (box.x0, box.x1);
1123 x1 = MAX (box.x0, box.x1);
1124
1125 w = x1 - x0;
1126 maxw = MAX (w, maxw);
1127 zoom = state.w / maxw;
1128 }
1129 break;
1130
1131 case FitPage:
1132 maxw = state.w;
1133 break;
1134
1135 case FitWidth:
1136 break;
1137
1138 default:
1139 ARSERT (0 && state.fitmodel);
1140 }
1141
1142 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1143 fz_rect rect;
1144 fz_matrix tm, sm;
1145
1146 p = &state.pagedims[pindex];
1147 fz_rotate (&ctm, state.rotate);
1148 fz_rotate (&rm, p->rotate + state.rotate);
1149 box = p->mediabox;
1150 fz_transform_rect (&box, &rm);
1151 w = box.x1 - box.x0;
1152 switch (state.fitmodel) {
1153 case FitProportional:
1154 p->left = ((maxw - w) * zoom) / 2.0;
1155 break;
1156 case FitPage:
1157 {
1158 double zh, h;
1159 zw = maxw / w;
1160 h = box.y1 - box.y0;
1161 zh = state.h / h;
1162 zoom = MIN (zw, zh);
1163 p->left = (maxw - (w * zoom)) / 2.0;
1164 }
1165 break;
1166 case FitWidth:
1167 p->left = 0;
1168 zoom = state.w / w;
1169 break;
1170 }
1171
1172 fz_scale (&p->zoomctm, zoom, zoom);
1173 fz_concat (&ctm, &p->zoomctm, &ctm);
1174
1175 fz_rotate (&rm, p->rotate);
1176 p->pagebox = p->mediabox;
1177 fz_transform_rect (&p->pagebox, &rm);
1178 p->pagebox.x1 -= p->pagebox.x0;
1179 p->pagebox.y1 -= p->pagebox.y0;
1180 p->pagebox.x0 = 0;
1181 p->pagebox.y0 = 0;
1182 rect = p->pagebox;
1183 fz_transform_rect (&rect, &ctm);
1184 fz_round_rect (&p->bounds, &rect);
1185 p->ctm = ctm;
1186
1187 fz_translate (&tm, 0, -p->mediabox.y1);
1188 fz_scale (&sm, zoom, -zoom);
1189 fz_concat (&ctm, &tm, &sm);
1190 fz_concat (&p->lctm, &ctm, &rm);
1191
1192 p->tctmready = 0;
1193 }
1194
1195 do {
1196 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1197 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1198 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1199 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1200 int boundw = x1 - x0;
1201 int boundh = y1 - y0;
1202
1203 printd ("pdim %d %d %d %d", p->pageno, boundw, boundh, p->left);
1204 } while (p-- != state.pagedims);
1205 }
1206
1207 static
1208 struct anchor { int n; int x; int y; int w; int h; }
1209 desttoanchor (fz_link_dest *dest)
1210 {
1211 int i;
1212 struct anchor a;
1213 struct pagedim *pdim = state.pagedims;
1214
1215 a.n = -1;
1216 a.x = 0;
1217 a.y = 0;
1218 for (i = 0; i < state.pagedimcount; ++i) {
1219 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1220 break;
1221 pdim = &state.pagedims[i];
1222 }
1223 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1224 fz_point p;
1225 if (dest->ld.gotor.flags & fz_link_flag_l_valid)
1226 p.x = dest->ld.gotor.lt.x;
1227 else
1228 p.x = 0.0;
1229 p.y = dest->ld.gotor.lt.y;
1230 fz_transform_point (&p, &pdim->lctm);
1231 a.x = p.x;
1232 a.y = p.y;
1233 }
1234 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1235 double x0, x1, y0, y1;
1236
1237 x0 = MIN (pdim->bounds.x0, pdim->bounds.x1);
1238 x1 = MAX (pdim->bounds.x0, pdim->bounds.x1);
1239 a.w = x1 - x0;
1240 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1241 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1242 a.h = y1 - y0;
1243 a.n = dest->ld.gotor.page;
1244 }
1245 return a;
1246 }
1247
1248 static void recurse_outline (fz_outline *outline, int level)
1249 {
1250 while (outline) {
1251 switch (outline->dest.kind) {
1252 case FZ_LINK_GOTO:
1253 {
1254 struct anchor a = desttoanchor (&outline->dest);
1255
1256 if (a.n >= 0) {
1257 printd ("o %d %d %d %d %s",
1258 level, a.n, a.y, a.h, outline->title);
1259 }
1260 }
1261 break;
1262
1263 case FZ_LINK_URI:
1264 printd ("ou %d %" FMT_s " %s %s", level,
1265 strlen (outline->title), outline->title,
1266 outline->dest.ld.uri.uri);
1267 break;
1268
1269 case FZ_LINK_NONE:
1270 printd ("on %d %s", level, outline->title);
1271 break;
1272
1273 default:
1274 printd ("emsg Unhandled outline kind %d for %s\n",
1275 outline->dest.kind, outline->title);
1276 break;
1277 }
1278 if (outline->down) {
1279 recurse_outline (outline->down, level + 1);
1280 }
1281 outline = outline->next;
1282 }
1283 }
1284
1285 static void process_outline (void)
1286 {
1287 fz_outline *outline;
1288
1289 if (!state.needoutline || !state.pagedimcount) return;
1290
1291 state.needoutline = 0;
1292 outline = fz_load_outline (state.ctx, state.doc);
1293 if (outline) {
1294 recurse_outline (outline, 0);
1295 fz_drop_outline (state.ctx, outline);
1296 }
1297 }
1298
1299 static char *strofspan (fz_text_span *span)
1300 {
1301 char *p;
1302 char utf8[10];
1303 fz_text_char *ch;
1304 size_t size = 0, cap = 80;
1305
1306 p = malloc (cap + 1);
1307 if (!p) return NULL;
1308
1309 for (ch = span->text; ch < span->text + span->len; ++ch) {
1310 int n = fz_runetochar (utf8, ch->c);
1311 if (size + n > cap) {
1312 cap *= 2;
1313 p = realloc (p, cap + 1);
1314 if (!p) return NULL;
1315 }
1316
1317 memcpy (p + size, utf8, n);
1318 size += n;
1319 }
1320 p[size] = 0;
1321 return p;
1322 }
1323
1324 static int matchspan (regex_t *re, fz_text_span *span,
1325 int stop, int pageno, double start)
1326 {
1327 int ret;
1328 char *p;
1329 regmatch_t rm;
1330 int a, b, c;
1331 fz_rect sb, eb;
1332 fz_point p1, p2, p3, p4;
1333
1334 p = strofspan (span);
1335 if (!p) return -1;
1336
1337 ret = regexec (re, p, 1, &rm, 0);
1338 if (ret) {
1339 free (p);
1340 if (ret != REG_NOMATCH) {
1341 size_t size;
1342 char errbuf[80];
1343 size = regerror (ret, re, errbuf, sizeof (errbuf));
1344 printd ("msg regexec error `%.*s'",
1345 (int) size, errbuf);
1346 return -1;
1347 }
1348 return 0;
1349 }
1350 else {
1351 int l = span->len;
1352
1353 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1354 c += fz_runelen (span->text[a].c);
1355 }
1356 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1357 c += fz_runelen (span->text[b].c);
1358 }
1359
1360 if (fz_runelen (span->text[b].c) > 1) {
1361 b = MAX (0, b-1);
1362 }
1363
1364 fz_text_char_bbox (state.ctx, &sb, span, a);
1365 fz_text_char_bbox (state.ctx, &eb, span, b);
1366
1367 p1.x = sb.x0;
1368 p1.y = sb.y0;
1369 p2.x = eb.x1;
1370 p2.y = sb.y0;
1371 p3.x = eb.x1;
1372 p3.y = eb.y1;
1373 p4.x = sb.x0;
1374 p4.y = eb.y1;
1375
1376 if (!stop) {
1377 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1378 pageno, 1,
1379 p1.x, p1.y,
1380 p2.x, p2.y,
1381 p3.x, p3.y,
1382 p4.x, p4.y);
1383
1384 printd ("progress 1 found at %d `%.*s' in %f sec",
1385 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1386 now () - start);
1387 }
1388 else {
1389 printd ("match %d %d %f %f %f %f %f %f %f %f",
1390 pageno, 2,
1391 p1.x, p1.y,
1392 p2.x, p2.y,
1393 p3.x, p3.y,
1394 p4.x, p4.y);
1395 }
1396 free (p);
1397 return 1;
1398 }
1399 }
1400
1401 static int compareblocks (const void *l, const void *r)
1402 {
1403 fz_text_block const *ls = l;
1404 fz_text_block const* rs = r;
1405 return ls->bbox.y0 - rs->bbox.y0;
1406 }
1407
1408 /* wishful thinking function */
1409 static void search (regex_t *re, int pageno, int y, int forward)
1410 {
1411 int i, j;
1412 fz_device *tdev;
1413 fz_text_page *text;
1414 fz_text_sheet *sheet;
1415 struct pagedim *pdim, *pdimprev;
1416 int stop = 0, niters = 0;
1417 double start, end;
1418 fz_page *page;
1419
1420 start = now ();
1421 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1422 if (niters++ == 5) {
1423 niters = 0;
1424 if (hasdata ()) {
1425 printd ("progress 1 attention requested aborting search at %d",
1426 pageno);
1427 stop = 1;
1428 }
1429 else {
1430 printd ("progress %f searching in page %d",
1431 (double) (pageno + 1) / state.pagecount,
1432 pageno);
1433 }
1434 }
1435 pdimprev = NULL;
1436 for (i = 0; i < state.pagedimcount; ++i) {
1437 pdim = &state.pagedims[i];
1438 if (pdim->pageno == pageno) {
1439 goto found;
1440 }
1441 if (pdim->pageno > pageno) {
1442 pdim = pdimprev;
1443 goto found;
1444 }
1445 pdimprev = pdim;
1446 }
1447 pdim = pdimprev;
1448 found:
1449
1450 sheet = fz_new_text_sheet (state.ctx);
1451 text = fz_new_text_page (state.ctx);
1452 tdev = fz_new_text_device (state.ctx, sheet, text);
1453
1454 page = fz_load_page (state.ctx, state.doc, pageno);
1455 {
1456 fz_matrix ctm = pagectm1 (page, pdim);
1457 fz_run_page (state.ctx, page, tdev, &ctm, NULL);
1458 }
1459
1460 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1461 fz_drop_device (state.ctx, tdev);
1462
1463 for (j = 0; j < text->len; ++j) {
1464 int k;
1465 fz_page_block *pb;
1466 fz_text_block *block;
1467
1468 pb = &text->blocks[forward ? j : text->len - 1 - j];
1469 if (pb->type != FZ_PAGE_BLOCK_TEXT) continue;
1470 block = pb->u.text;
1471
1472 for (k = 0; k < block->len; ++k) {
1473 fz_text_line *line;
1474 fz_text_span *span;
1475
1476 if (forward) {
1477 line = &block->lines[k];
1478 if (line->bbox.y0 < y + 1) continue;
1479 }
1480 else {
1481 line = &block->lines[block->len - 1 - k];
1482 if (line->bbox.y0 > y - 1) continue;
1483 }
1484
1485 for (span = line->first_span; span; span = span->next) {
1486 switch (matchspan (re, span, stop, pageno, start)) {
1487 case 0: break;
1488 case 1: stop = 1; break;
1489 case -1: stop = 1; goto endloop;
1490 }
1491 }
1492 }
1493 }
1494 if (forward) {
1495 pageno += 1;
1496 y = 0;
1497 }
1498 else {
1499 pageno -= 1;
1500 y = INT_MAX;
1501 }
1502 endloop:
1503 fz_drop_text_page (state.ctx, text);
1504 fz_drop_text_sheet (state.ctx, sheet);
1505 fz_drop_page (state.ctx, page);
1506 }
1507 end = now ();
1508 if (!stop) {
1509 printd ("progress 1 no matches %f sec", end - start);
1510 }
1511 printd ("clearrects");
1512 }
1513
1514 static void set_tex_params (int colorspace)
1515 {
1516 union {
1517 unsigned char b;
1518 unsigned int s;
1519 } endianness = {1};
1520
1521 switch (colorspace) {
1522 case 0:
1523 state.texiform = GL_RGBA8;
1524 state.texform = GL_RGBA;
1525 state.texty = GL_UNSIGNED_BYTE;
1526 state.colorspace = fz_device_rgb (state.ctx);
1527 break;
1528 case 1:
1529 state.texiform = GL_RGBA8;
1530 state.texform = GL_BGRA;
1531 state.texty = endianness.s > 1
1532 ? GL_UNSIGNED_INT_8_8_8_8
1533 : GL_UNSIGNED_INT_8_8_8_8_REV;
1534 state.colorspace = fz_device_bgr (state.ctx);
1535 break;
1536 case 2:
1537 state.texiform = GL_LUMINANCE_ALPHA;
1538 state.texform = GL_LUMINANCE_ALPHA;
1539 state.texty = GL_UNSIGNED_BYTE;
1540 state.colorspace = fz_device_gray (state.ctx);
1541 break;
1542 default:
1543 errx (1, "invalid colorspce %d", colorspace);
1544 }
1545 }
1546
1547 static void realloctexts (int texcount)
1548 {
1549 size_t size;
1550
1551 if (texcount == state.texcount) return;
1552
1553 if (texcount < state.texcount) {
1554 glDeleteTextures (state.texcount - texcount,
1555 state.texids + texcount);
1556 }
1557
1558 size = texcount * sizeof (*state.texids);
1559 state.texids = realloc (state.texids, size);
1560 if (!state.texids) {
1561 err (1, "realloc texids %" FMT_s, size);
1562 }
1563
1564 size = texcount * sizeof (*state.texowners);
1565 state.texowners = realloc (state.texowners, size);
1566 if (!state.texowners) {
1567 err (1, "realloc texowners %" FMT_s, size);
1568 }
1569 if (texcount > state.texcount) {
1570 int i;
1571
1572 glGenTextures (texcount - state.texcount,
1573 state.texids + state.texcount);
1574 for (i = state.texcount; i < texcount; ++i) {
1575 state.texowners[i].w = -1;
1576 state.texowners[i].slice = NULL;
1577 }
1578 }
1579 state.texcount = texcount;
1580 state.texindex = 0;
1581 }
1582
1583 static char *mbtoutf8 (char *s)
1584 {
1585 char *p, *r;
1586 wchar_t *tmp;
1587 size_t i, ret, len;
1588
1589 len = mbstowcs (NULL, s, strlen (s));
1590 if (len == 0) {
1591 return s;
1592 }
1593 else {
1594 if (len == (size_t) -1) {
1595 return s;
1596 }
1597 }
1598
1599 tmp = malloc (len * sizeof (wchar_t));
1600 if (!tmp) {
1601 return s;
1602 }
1603
1604 ret = mbstowcs (tmp, s, len);
1605 if (ret == (size_t) -1) {
1606 free (tmp);
1607 return s;
1608 }
1609
1610 len = 0;
1611 for (i = 0; i < ret; ++i) {
1612 len += fz_runelen (tmp[i]);
1613 }
1614
1615 p = r = malloc (len + 1);
1616 if (!r) {
1617 free (tmp);
1618 return s;
1619 }
1620
1621 for (i = 0; i < ret; ++i) {
1622 p += fz_runetochar (p, tmp[i]);
1623 }
1624 *p = 0;
1625 free (tmp);
1626 return r;
1627 }
1628
1629 CAMLprim value ml_mbtoutf8 (value s_v)
1630 {
1631 CAMLparam1 (s_v);
1632 CAMLlocal1 (ret_v);
1633 char *s, *r;
1634
1635 s = String_val (s_v);
1636 r = mbtoutf8 (s);
1637 if (r == s) {
1638 ret_v = s_v;
1639 }
1640 else {
1641 ret_v = caml_copy_string (r);
1642 free (r);
1643 }
1644 CAMLreturn (ret_v);
1645 }
1646
1647 static void * mainloop (void UNUSED_ATTR *unused)
1648 {
1649 char *p = NULL;
1650 int len, ret, oldlen = 0;
1651
1652 for (;;) {
1653 len = readlen ();
1654 if (len == 0) {
1655 errx (1, "readlen returned 0");
1656 }
1657
1658 if (oldlen < len + 1) {
1659 p = realloc (p, len + 1);
1660 if (!p) {
1661 err (1, "realloc %d failed", len + 1);
1662 }
1663 oldlen = len + 1;
1664 }
1665 readdata (p, len);
1666 p[len] = 0;
1667
1668 if (!strncmp ("open", p, 4)) {
1669 int wthack, off, ok = 0;
1670 char *password;
1671 char *filename;
1672 char *utf8filename;
1673 size_t filenamelen;
1674
1675 ret = sscanf (p + 5, " %d %d %n", &wthack, &state.cxack, &off);
1676 if (ret != 2) {
1677 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1678 }
1679
1680 filename = p + 5 + off;
1681 filenamelen = strlen (filename);
1682 password = filename + filenamelen + 1;
1683
1684 lock ("open");
1685 fz_try (state.ctx) {
1686 ok = openxref (filename, password);
1687 }
1688 fz_catch (state.ctx) {
1689 utf8filename = mbtoutf8 (filename);
1690 printd ("msg Could not open %s", utf8filename);
1691 }
1692 if (ok) {
1693 pdfinfo ();
1694 initpdims ();
1695 }
1696 unlock ("open");
1697
1698 if (ok) {
1699 if (!wthack) {
1700 utf8filename = mbtoutf8 (filename);
1701 printd ("msg Opened %s (press h/F1 to get help)",
1702 utf8filename);
1703 if (utf8filename != filename) {
1704 free (utf8filename);
1705 }
1706 }
1707 state.needoutline = 1;
1708 }
1709 }
1710 else if (!strncmp ("cs", p, 2)) {
1711 int i, colorspace;
1712
1713 ret = sscanf (p + 2, " %d", &colorspace);
1714 if (ret != 1) {
1715 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1716 }
1717 lock ("cs");
1718 set_tex_params (colorspace);
1719 for (i = 0; i < state.texcount; ++i) {
1720 state.texowners[i].w = -1;
1721 state.texowners[i].slice = NULL;
1722 }
1723 unlock ("cs");
1724 }
1725 else if (!strncmp ("freepage", p, 8)) {
1726 void *ptr;
1727
1728 ret = sscanf (p + 8, " %" SCN_ptr, SCN_ptr_cast (&ptr));
1729 if (ret != 1) {
1730 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1731 }
1732 freepage (ptr);
1733 }
1734 else if (!strncmp ("freetile", p, 8)) {
1735 void *ptr;
1736
1737 ret = sscanf (p + 8, " %" SCN_ptr, SCN_ptr_cast (&ptr));
1738 if (ret != 1) {
1739 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1740 }
1741 freetile (ptr);
1742 }
1743 else if (!strncmp ("search", p, 6)) {
1744 int icase, pageno, y, len2, forward;
1745 char *pattern;
1746 regex_t re;
1747
1748 ret = sscanf (p + 6, " %d %d %d %d,%n",
1749 &icase, &pageno, &y, &forward, &len2);
1750 if (ret != 4) {
1751 errx (1, "malformed search `%s' ret=%d", p, ret);
1752 }
1753
1754 pattern = p + 6 + len2;
1755 ret = regcomp (&re, pattern,
1756 REG_EXTENDED | (icase ? REG_ICASE : 0));
1757 if (ret) {
1758 char errbuf[80];
1759 size_t size;
1760
1761 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1762 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1763 }
1764 else {
1765 search (&re, pageno, y, forward);
1766 regfree (&re);
1767 }
1768 }
1769 else if (!strncmp ("geometry", p, 8)) {
1770 int w, h, fitmodel;
1771
1772 printd ("clear");
1773 ret = sscanf (p + 8, " %d %d %d", &w, &h, &fitmodel);
1774 if (ret != 3) {
1775 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1776 }
1777
1778 lock ("geometry");
1779 state.h = h;
1780 if (w != state.w) {
1781 int i;
1782 state.w = w;
1783 for (i = 0; i < state.texcount; ++i) {
1784 state.texowners[i].slice = NULL;
1785 }
1786 }
1787 state.fitmodel = fitmodel;
1788 layout ();
1789 process_outline ();
1790
1791 state.gen++;
1792 unlock ("geometry");
1793 printd ("continue %d", state.pagecount);
1794 }
1795 else if (!strncmp ("reqlayout", p, 9)) {
1796 char *nameddest;
1797 int rotate, off, h;
1798 unsigned int fitmodel;
1799 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
1800
1801 printd ("clear");
1802 ret = sscanf (p + 9, " %d %u %d %n",
1803 &rotate, &fitmodel, &h, &off);
1804 if (ret != 3) {
1805 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1806 }
1807 lock ("reqlayout");
1808 if (state.rotate != rotate || state.fitmodel != fitmodel) {
1809 state.gen += 1;
1810 }
1811 state.rotate = rotate;
1812 state.fitmodel = fitmodel;
1813 state.h = h;
1814 layout ();
1815 process_outline ();
1816
1817 nameddest = p + 9 + off;
1818 if (pdf && nameddest && *nameddest) {
1819 struct anchor a;
1820 fz_link_dest dest;
1821 pdf_obj *needle, *obj;
1822
1823 needle = pdf_new_string (state.ctx, pdf, nameddest,
1824 strlen (nameddest));
1825 obj = pdf_lookup_dest (state.ctx, pdf, needle);
1826 if (obj) {
1827 dest = pdf_parse_link_dest (state.ctx, pdf,
1828 FZ_LINK_GOTO, obj);
1829
1830 a = desttoanchor (&dest);
1831 if (a.n >= 0) {
1832 printd ("a %d %d %d", a.n, a.x, a.y);
1833 }
1834 else {
1835 printd ("emsg failed to parse destination `%s'\n",
1836 nameddest);
1837 }
1838 }
1839 else {
1840 printd ("emsg destination `%s' not found\n",
1841 nameddest);
1842 }
1843 pdf_drop_obj (state.ctx, needle);
1844 }
1845
1846 state.gen++;
1847 unlock ("reqlayout");
1848 printd ("continue %d", state.pagecount);
1849 }
1850 else if (!strncmp ("page", p, 4)) {
1851 double a, b;
1852 struct page *page;
1853 int pageno, pindex;
1854
1855 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1856 if (ret != 2) {
1857 errx (1, "bad page line `%.*s' ret=%d", len, p, ret);
1858 }
1859
1860 lock ("page");
1861 a = now ();
1862 page = loadpage (pageno, pindex);
1863 b = now ();
1864 unlock ("page");
1865
1866 printd ("page %" FMT_ptr " %f", FMT_ptr_cast (page), b - a);
1867 }
1868 else if (!strncmp ("tile", p, 4)) {
1869 int x, y, w, h;
1870 struct page *page;
1871 struct tile *tile;
1872 double a, b;
1873 void *data;
1874
1875 ret = sscanf (p + 4, " %" SCN_ptr " %d %d %d %d %" SCN_ptr,
1876 SCN_ptr_cast (&page), &x, &y, &w, &h,
1877 SCN_ptr_cast (&data));
1878 if (ret != 6) {
1879 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1880 }
1881
1882 lock ("tile");
1883 a = now ();
1884 tile = rendertile (page, x, y, w, h, data);
1885 b = now ();
1886 unlock ("tile");
1887
1888 printd ("tile %d %d %" FMT_ptr " %u %f",
1889 x, y,
1890 FMT_ptr_cast (tile),
1891 tile->w * tile->h * tile->pixmap->n,
1892 b - a);
1893 }
1894 else if (!strncmp ("trimset", p, 7)) {
1895 fz_irect fuzz;
1896 int trimmargins;
1897
1898 ret = sscanf (p + 7, " %d %d %d %d %d",
1899 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1900 if (ret != 5) {
1901 errx (1, "malformed trimset `%.*s' ret=%d", len, p, ret);
1902 }
1903 lock ("trimset");
1904 state.trimmargins = trimmargins;
1905 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1906 state.trimanew = 1;
1907 state.trimfuzz = fuzz;
1908 }
1909 unlock ("trimset");
1910 }
1911 else if (!strncmp ("settrim", p, 7)) {
1912 fz_irect fuzz;
1913 int trimmargins;
1914
1915 ret = sscanf (p + 7, " %d %d %d %d %d",
1916 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1917 if (ret != 5) {
1918 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1919 }
1920 printd ("clear");
1921 lock ("settrim");
1922 state.trimmargins = trimmargins;
1923 state.needoutline = 1;
1924 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1925 state.trimanew = 1;
1926 state.trimfuzz = fuzz;
1927 }
1928 state.pagedimcount = 0;
1929 free (state.pagedims);
1930 state.pagedims = NULL;
1931 initpdims ();
1932 layout ();
1933 process_outline ();
1934 unlock ("settrim");
1935 printd ("continue %d", state.pagecount);
1936 }
1937 else if (!strncmp ("sliceh", p, 6)) {
1938 int h;
1939
1940 ret = sscanf (p + 6, " %d", &h);
1941 if (ret != 1) {
1942 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1943 }
1944 if (h != state.sliceheight) {
1945 int i;
1946
1947 state.sliceheight = h;
1948 for (i = 0; i < state.texcount; ++i) {
1949 state.texowners[i].w = -1;
1950 state.texowners[i].h = -1;
1951 state.texowners[i].slice = NULL;
1952 }
1953 }
1954 }
1955 else if (!strncmp ("interrupt", p, 9)) {
1956 printd ("vmsg interrupted");
1957 }
1958 else {
1959 errx (1, "unknown command %.*s", len, p);
1960 }
1961 }
1962 return 0;
1963 }
1964
1965 CAMLprim value ml_realloctexts (value texcount_v)
1966 {
1967 CAMLparam1 (texcount_v);
1968 int ok;
1969
1970 if (trylock ("ml_realloctexts")) {
1971 ok = 0;
1972 goto done;
1973 }
1974 realloctexts (Int_val (texcount_v));
1975 ok = 1;
1976 unlock ("ml_realloctexts");
1977
1978 done:
1979 CAMLreturn (Val_bool (ok));
1980 }
1981
1982 static void recti (int x0, int y0, int x1, int y1)
1983 {
1984 GLfloat *v = state.vertices;
1985
1986 glVertexPointer (2, GL_FLOAT, 0, v);
1987 v[0] = x0; v[1] = y0;
1988 v[2] = x1; v[3] = y0;
1989 v[4] = x0; v[5] = y1;
1990 v[6] = x1; v[7] = y1;
1991 glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
1992 }
1993
1994 static void showsel (struct page *page, int ox, int oy)
1995 {
1996 int seen = 0;
1997 fz_irect bbox;
1998 fz_rect rect;
1999 fz_text_line *line;
2000 fz_page_block *pageb;
2001 fz_text_block *block;
2002 struct mark first, last;
2003 unsigned char selcolor[] = {15,15,15,140};
2004
2005 first = page->fmark;
2006 last = page->lmark;
2007
2008 if (!first.span || !last.span) return;
2009
2010 glEnable (GL_BLEND);
2011 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
2012 glColor4ubv (selcolor);
2013
2014 ox += state.pagedims[page->pdimno].bounds.x0;
2015 oy += state.pagedims[page->pdimno].bounds.y0;
2016 for (pageb = page->text->blocks;
2017 pageb < page->text->blocks + page->text->len;
2018 ++pageb) {
2019 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2020 block = pageb->u.text;
2021
2022 for (line = block->lines;
2023 line < block->lines + block->len;
2024 ++line) {
2025 fz_text_span *span;
2026 rect = fz_empty_rect;
2027
2028 for (span = line->first_span; span; span = span->next) {
2029 int i, j, k;
2030 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
2031
2032 j = 0;
2033 k = span->len - 1;
2034
2035 if (span == page->fmark.span && span == page->lmark.span) {
2036 seen = 1;
2037 j = MIN (first.i, last.i);
2038 k = MAX (first.i, last.i);
2039 }
2040 else {
2041 if (span == first.span) {
2042 seen = 1;
2043 j = first.i;
2044 }
2045 else if (span == last.span) {
2046 seen = 1;
2047 k = last.i;
2048 }
2049 }
2050
2051 if (seen) {
2052 for (i = j; i <= k; ++i) {
2053 fz_rect bbox1;
2054 fz_union_rect (&rect,
2055 fz_text_char_bbox (state.ctx, &bbox1,
2056 span, i));
2057 }
2058 fz_round_rect (&bbox, &rect);
2059 lprintf ("%d %d %d %d oy=%d ox=%d\n",
2060 bbox.x0,
2061 bbox.y0,
2062 bbox.x1,
2063 bbox.y1,
2064 oy, ox);
2065
2066 recti (bbox.x0 + ox, bbox.y0 + oy,
2067 bbox.x1 + ox, bbox.y1 + oy);
2068 if (span == last.span) {
2069 goto done;
2070 }
2071 rect = fz_empty_rect;
2072 }
2073 }
2074 }
2075 }
2076 done:
2077 glDisable (GL_BLEND);
2078 }
2079
2080 #include "glfont.c"
2081
2082 static void stipplerect (fz_matrix *m,
2083 fz_point *p1,
2084 fz_point *p2,
2085 fz_point *p3,
2086 fz_point *p4,
2087 GLfloat *texcoords,
2088 GLfloat *vertices)
2089 {
2090 fz_transform_point (p1, m);
2091 fz_transform_point (p2, m);
2092 fz_transform_point (p3, m);
2093 fz_transform_point (p4, m);
2094 {
2095 float w, h, s, t;
2096
2097 w = p2->x - p1->x;
2098 h = p2->y - p1->y;
2099 t = sqrtf (w*w + h*h) * .25f;
2100
2101 w = p3->x - p2->x;
2102 h = p3->y - p2->y;
2103 s = sqrtf (w*w + h*h) * .25f;
2104
2105 texcoords[0] = 0; vertices[0] = p1->x; vertices[1] = p1->y;
2106 texcoords[1] = t; vertices[2] = p2->x; vertices[3] = p2->y;
2107
2108 texcoords[2] = 0; vertices[4] = p2->x; vertices[5] = p2->y;
2109 texcoords[3] = s; vertices[6] = p3->x; vertices[7] = p3->y;
2110
2111 texcoords[4] = 0; vertices[8] = p3->x; vertices[9] = p3->y;
2112 texcoords[5] = t; vertices[10] = p4->x; vertices[11] = p4->y;
2113
2114 texcoords[6] = 0; vertices[12] = p4->x; vertices[13] = p4->y;
2115 texcoords[7] = s; vertices[14] = p1->x; vertices[15] = p1->y;
2116 }
2117 glDrawArrays (GL_LINES, 0, 8);
2118 }
2119
2120 static void highlightlinks (struct page *page, int xoff, int yoff)
2121 {
2122 int i;
2123 fz_matrix ctm, tm, pm;
2124 fz_link *link, *links;
2125 GLfloat *texcoords = state.texcoords;
2126 GLfloat *vertices = state.vertices;
2127
2128 links = fz_load_links (state.ctx, page->fzpage);
2129
2130 glEnable (GL_TEXTURE_1D);
2131 glEnable (GL_BLEND);
2132 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2133 glBindTexture (GL_TEXTURE_1D, state.stid);
2134
2135 xoff -= state.pagedims[page->pdimno].bounds.x0;
2136 yoff -= state.pagedims[page->pdimno].bounds.y0;
2137 fz_translate (&tm, xoff, yoff);
2138 pm = pagectm (page);
2139 fz_concat (&ctm, &pm, &tm);
2140
2141 glTexCoordPointer (1, GL_FLOAT, 0, texcoords);
2142 glVertexPointer (2, GL_FLOAT, 0, vertices);
2143
2144 for (link = links; link; link = link->next) {
2145 fz_point p1, p2, p3, p4;
2146
2147 p1.x = link->rect.x0;
2148 p1.y = link->rect.y0;
2149
2150 p2.x = link->rect.x1;
2151 p2.y = link->rect.y0;
2152
2153 p3.x = link->rect.x1;
2154 p3.y = link->rect.y1;
2155
2156 p4.x = link->rect.x0;
2157 p4.y = link->rect.y1;
2158
2159 switch (link->dest.kind) {
2160 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2161 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2162 case FZ_LINK_LAUNCH: glColor3ub (0, 255, 0); break;
2163 default: glColor3ub (0, 0, 0); break;
2164 }
2165 stipplerect (&ctm, &p1, &p2, &p3, &p4, texcoords, vertices);
2166 }
2167
2168 for (i = 0; i < page->annotcount; ++i) {
2169 fz_point p1, p2, p3, p4;
2170 struct annot *annot = &page->annots[i];
2171
2172 p1.x = annot->bbox.x0;
2173 p1.y = annot->bbox.y0;
2174
2175 p2.x = annot->bbox.x1;
2176 p2.y = annot->bbox.y0;
2177
2178 p3.x = annot->bbox.x1;
2179 p3.y = annot->bbox.y1;
2180
2181 p4.x = annot->bbox.x0;
2182 p4.y = annot->bbox.y1;
2183
2184 glColor3ub (0, 0, 128);
2185 stipplerect (&ctm, &p1, &p2, &p3, &p4, texcoords, vertices);
2186 }
2187
2188 glDisable (GL_BLEND);
2189 glDisable (GL_TEXTURE_1D);
2190 }
2191
2192 static int compareslinks (const void *l, const void *r)
2193 {
2194 struct slink const *ls = l;
2195 struct slink const *rs = r;
2196 if (ls->bbox.y0 == rs->bbox.y0) {
2197 return rs->bbox.x0 - rs->bbox.x0;
2198 }
2199 return ls->bbox.y0 - rs->bbox.y0;
2200 }
2201
2202 static void droptext (struct page *page)
2203 {
2204 if (page->text) {
2205 fz_drop_text_page (state.ctx, page->text);
2206 page->fmark.i = -1;
2207 page->lmark.i = -1;
2208 page->fmark.span = NULL;
2209 page->lmark.span = NULL;
2210 page->text = NULL;
2211 }
2212 if (page->sheet) {
2213 fz_drop_text_sheet (state.ctx, page->sheet);
2214 page->sheet = NULL;
2215 }
2216 }
2217
2218 static void dropannots (struct page *page)
2219 {
2220 if (page->annots) {
2221 free (page->annots);
2222 page->annots = NULL;
2223 page->annotcount = 0;
2224 }
2225 }
2226
2227 static void ensureannots (struct page *page)
2228 {
2229 int i, count = 0;
2230 size_t annotsize = sizeof (*page->annots);
2231 fz_annot *annot;
2232
2233 if (state.gen != page->agen) {
2234 dropannots (page);
2235 page->agen = state.gen;
2236 }
2237 if (page->annots) return;
2238
2239 for (annot = fz_first_annot (state.ctx, page->fzpage);
2240 annot;
2241 annot = fz_next_annot (state.ctx, page->fzpage, annot)) {
2242 count++;
2243 }
2244
2245 if (count > 0) {
2246 page->annotcount = count;
2247 page->annots = calloc (count, annotsize);
2248 if (!page->annots) {
2249 err (1, "calloc annots %d", count);
2250 }
2251
2252 for (annot = fz_first_annot (state.ctx, page->fzpage), i = 0;
2253 annot;
2254 annot = fz_next_annot (state.ctx, page->fzpage, annot), i++) {
2255 fz_rect rect;
2256
2257 fz_bound_annot (state.ctx, page->fzpage, annot, &rect);
2258 page->annots[i].annot = annot;
2259 fz_round_rect (&page->annots[i].bbox, &rect);
2260 }
2261 }
2262 }
2263
2264 static void dropslinks (struct page *page)
2265 {
2266 if (page->slinks) {
2267 free (page->slinks);
2268 page->slinks = NULL;
2269 page->slinkcount = 0;
2270 }
2271 }
2272
2273 static void ensureslinks (struct page *page)
2274 {
2275 fz_matrix ctm;
2276 int i, count;
2277 size_t slinksize = sizeof (*page->slinks);
2278 fz_link *link, *links;
2279
2280 ensureannots (page);
2281 if (state.gen != page->sgen) {
2282 dropslinks (page);
2283 page->sgen = state.gen;
2284 }
2285 if (page->slinks) return;
2286
2287 links = fz_load_links (state.ctx, page->fzpage);
2288 ctm = state.pagedims[page->pdimno].ctm;
2289
2290 count = page->annotcount;
2291 for (link = links; link; link = link->next) {
2292 count++;
2293 }
2294 if (count > 0) {
2295 int j;
2296
2297 page->slinkcount = count;
2298 page->slinks = calloc (count, slinksize);
2299 if (!page->slinks) {
2300 err (1, "calloc slinks %d", count);
2301 }
2302
2303 for (i = 0, link = links; link; ++i, link = link->next) {
2304 fz_rect rect;
2305
2306 rect = link->rect;
2307 fz_transform_rect (&rect, &ctm);
2308 page->slinks[i].tag = SLINK;
2309 page->slinks[i].u.link = link;
2310 fz_round_rect (&page->slinks[i].bbox, &rect);
2311 }
2312 for (j = 0; j < page->annotcount; ++j, ++i) {
2313 fz_rect rect;
2314 fz_bound_annot (state.ctx,
2315 page->fzpage,
2316 page->annots[j].annot,
2317 &rect);
2318 fz_transform_rect (&rect, &ctm);
2319 fz_round_rect (&page->slinks[i].bbox, &rect);
2320
2321 page->slinks[i].tag = SANNOT;
2322 page->slinks[i].u.annot = page->annots[j].annot;
2323 }
2324 qsort (page->slinks, count, slinksize, compareslinks);
2325 }
2326 }
2327
2328 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2329 static void fmt_linkn (char *s, unsigned int u)
2330 {
2331 unsigned int len; unsigned int q;
2332 unsigned int zma = 'z' - 'a' + 1;
2333 len = 1; q = u;
2334 while (q > zma - 1) { ++len; q /= zma; }
2335 if (s) {
2336 s += len;
2337 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2338 /* handles u == 0 */
2339 }
2340 s[len] = 0;
2341 }
2342
2343 static void highlightslinks (struct page *page, int xoff, int yoff,
2344 int noff, char *targ, int tlen, int hfsize)
2345 {
2346 int i;
2347 char buf[40];
2348 struct slink *slink;
2349 double x0, y0, x1, y1, w;
2350
2351 ensureslinks (page);
2352 glColor3ub (0xc3, 0xb0, 0x91);
2353 for (i = 0; i < page->slinkcount; ++i) {
2354 fmt_linkn (buf, i + noff);
2355 if (!tlen || !strncmp (targ, buf, tlen)) {
2356 slink = &page->slinks[i];
2357
2358 x0 = slink->bbox.x0 + xoff - 5;
2359 y1 = slink->bbox.y0 + yoff - 5;
2360 y0 = y1 + 10 + hfsize;
2361 w = measure_string (state.face, hfsize, buf);
2362 x1 = x0 + w + 10;
2363 recti (x0, y0, x1, y1);
2364 }
2365 }
2366
2367 glEnable (GL_BLEND);
2368 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2369 glEnable (GL_TEXTURE_2D);
2370 glColor3ub (0, 0, 0);
2371 for (i = 0; i < page->slinkcount; ++i) {
2372 fmt_linkn (buf, i + noff);
2373 if (!tlen || !strncmp (targ, buf, tlen)) {
2374 slink = &page->slinks[i];
2375
2376 x0 = slink->bbox.x0 + xoff;
2377 y0 = slink->bbox.y0 + yoff + hfsize;
2378 draw_string (state.face, hfsize, x0, y0, buf);
2379 }
2380 }
2381 glDisable (GL_TEXTURE_2D);
2382 glDisable (GL_BLEND);
2383 }
2384
2385 static void uploadslice (struct tile *tile, struct slice *slice)
2386 {
2387 int offset;
2388 struct slice *slice1;
2389 unsigned char *texdata;
2390
2391 offset = 0;
2392 for (slice1 = tile->slices; slice != slice1; slice1++) {
2393 offset += slice1->h * tile->w * tile->pixmap->n;
2394 }
2395 if (slice->texindex != -1 && slice->texindex < state.texcount
2396 && state.texowners[slice->texindex].slice == slice) {
2397 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2398 }
2399 else {
2400 int subimage = 0;
2401 int texindex = state.texindex++ % state.texcount;
2402
2403 if (state.texowners[texindex].w == tile->w) {
2404 if (state.texowners[texindex].h >= slice->h) {
2405 subimage = 1;
2406 }
2407 else {
2408 state.texowners[texindex].h = slice->h;
2409 }
2410 }
2411 else {
2412 state.texowners[texindex].h = slice->h;
2413 }
2414
2415 state.texowners[texindex].w = tile->w;
2416 state.texowners[texindex].slice = slice;
2417 slice->texindex = texindex;
2418
2419 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2420 if (tile->pbo) {
2421 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2422 texdata = 0;
2423 }
2424 else {
2425 texdata = tile->pixmap->samples;
2426 }
2427 if (subimage) {
2428 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2429 0,
2430 0,
2431 0,
2432 tile->w,
2433 slice->h,
2434 state.texform,
2435 state.texty,
2436 texdata+offset
2437 );
2438 }
2439 else {
2440 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2441 0,
2442 state.texiform,
2443 tile->w,
2444 slice->h,
2445 0,
2446 state.texform,
2447 state.texty,
2448 texdata+offset
2449 );
2450 }
2451 if (tile->pbo) {
2452 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2453 }
2454 }
2455 }
2456
2457 CAMLprim value ml_begintiles (value unit_v)
2458 {
2459 CAMLparam1 (unit_v);
2460 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2461 glTexCoordPointer (2, GL_FLOAT, 0, state.texcoords);
2462 glVertexPointer (2, GL_FLOAT, 0, state.vertices);
2463 CAMLreturn (unit_v);
2464 }
2465
2466 CAMLprim value ml_endtiles (value unit_v)
2467 {
2468 CAMLparam1 (unit_v);
2469 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2470 CAMLreturn (unit_v);
2471 }
2472
2473 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2474 {
2475 CAMLparam2 (args_v, ptr_v);
2476 int dispx = Int_val (Field (args_v, 0));
2477 int dispy = Int_val (Field (args_v, 1));
2478 int dispw = Int_val (Field (args_v, 2));
2479 int disph = Int_val (Field (args_v, 3));
2480 int tilex = Int_val (Field (args_v, 4));
2481 int tiley = Int_val (Field (args_v, 5));
2482 char *s = String_val (ptr_v);
2483 struct tile *tile = parse_pointer ("ml_drawtile", s);
2484 int slicey, firstslice;
2485 struct slice *slice;
2486 GLfloat *texcoords = state.texcoords;
2487 GLfloat *vertices = state.vertices;
2488
2489 firstslice = tiley / tile->sliceheight;
2490 slice = &tile->slices[firstslice];
2491 slicey = tiley % tile->sliceheight;
2492
2493 while (disph > 0) {
2494 int dh;
2495
2496 dh = slice->h - slicey;
2497 dh = MIN (disph, dh);
2498 uploadslice (tile, slice);
2499
2500 texcoords[0] = tilex; texcoords[1] = slicey;
2501 texcoords[2] = tilex+dispw; texcoords[3] = slicey;
2502 texcoords[4] = tilex; texcoords[5] = slicey+dh;
2503 texcoords[6] = tilex+dispw; texcoords[7] = slicey+dh;
2504
2505 vertices[0] = dispx; vertices[1] = dispy;
2506 vertices[2] = dispx+dispw; vertices[3] = dispy;
2507 vertices[4] = dispx; vertices[5] = dispy+dh;
2508 vertices[6] = dispx+dispw; vertices[7] = dispy+dh;
2509
2510 glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
2511 dispy += dh;
2512 disph -= dh;
2513 slice++;
2514 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2515 slicey = 0;
2516 }
2517 CAMLreturn (Val_unit);
2518 }
2519
2520 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2521 value xoff_v, value yoff_v,
2522 value li_v)
2523 {
2524 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2525 int xoff = Int_val (xoff_v);
2526 int yoff = Int_val (yoff_v);
2527 int noff = Int_val (Field (li_v, 0));
2528 char *targ = String_val (Field (li_v, 1));
2529 int tlen = caml_string_length (Field (li_v, 1));
2530 int hfsize = Int_val (Field (li_v, 2));
2531 char *s = String_val (ptr_v);
2532 int hlmask = Int_val (hlinks_v);
2533 struct page *page = parse_pointer ("ml_postprocess", s);
2534
2535 if (!page->fzpage) {
2536 /* deal with loadpage failed pages */
2537 goto done;
2538 }
2539
2540 ensureannots (page);
2541
2542 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2543 if (trylock ("ml_postprocess")) {
2544 noff = 0;
2545 goto done;
2546 }
2547 if (hlmask & 2) {
2548 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2549 noff = page->slinkcount;
2550 }
2551 if (page->tgen == state.gen) {
2552 showsel (page, xoff, yoff);
2553 }
2554 unlock ("ml_postprocess");
2555
2556 done:
2557 CAMLreturn (Val_int (noff));
2558 }
2559
2560 static struct annot *getannot (struct page *page, int x, int y)
2561 {
2562 int i;
2563 fz_point p;
2564 fz_matrix ctm;
2565 const fz_matrix *tctm;
2566 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
2567
2568 if (!page->annots) return NULL;
2569
2570 if (pdf) {
2571 trimctm ((pdf_page *) page->fzpage, page->pdimno);
2572 tctm = &state.pagedims[page->pdimno].tctm;
2573 }
2574 else {
2575 tctm = &fz_identity;
2576 }
2577
2578 p.x = x;
2579 p.y = y;
2580
2581 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2582 fz_invert_matrix (&ctm, &ctm);
2583 fz_transform_point (&p, &ctm);
2584
2585 if (pdf) {
2586 for (i = 0; i < page->annotcount; ++i) {
2587 struct annot *a = &page->annots[i];
2588 pdf_annot *annot = (pdf_annot *) a->annot;
2589 if (p.x >= annot->pagerect.x0 && p.x <= annot->pagerect.x1) {
2590 if (p.y >= annot->pagerect.y0 && p.y <= annot->pagerect.y1) {
2591 return a;
2592 }
2593 }
2594 }
2595 }
2596 return NULL;
2597 }
2598
2599 static fz_link *getlink (struct page *page, int x, int y)
2600 {
2601 fz_point p;
2602 fz_matrix ctm;
2603 const fz_matrix *tctm;
2604 fz_link *link, *links;
2605
2606 tctm = &fz_identity;
2607 links = fz_load_links (state.ctx, page->fzpage);
2608
2609 p.x = x;
2610 p.y = y;
2611
2612 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2613 fz_invert_matrix (&ctm, &ctm);
2614 fz_transform_point (&p, &ctm);
2615
2616 for (link = links; link; link = link->next) {
2617 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2618 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2619 return link;
2620 }
2621 }
2622 }
2623 return NULL;
2624 }
2625
2626 static void ensuretext (struct page *page)
2627 {
2628 if (state.gen != page->tgen) {
2629 droptext (page);
2630 page->tgen = state.gen;
2631 }
2632 if (!page->text) {
2633 fz_matrix ctm;
2634 fz_device *tdev;
2635
2636 page->text = fz_new_text_page (state.ctx);
2637 page->sheet = fz_new_text_sheet (state.ctx);
2638 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2639 ctm = pagectm (page);
2640 fz_begin_page (state.ctx, tdev, &fz_infinite_rect, &ctm);
2641 fz_run_display_list (state.ctx, page->dlist,
2642 tdev, &ctm, &fz_infinite_rect, NULL);
2643 qsort (page->text->blocks, page->text->len,
2644 sizeof (*page->text->blocks), compareblocks);
2645 fz_end_page (state.ctx, tdev);
2646 fz_drop_device (state.ctx, tdev);
2647 }
2648 }
2649
2650 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2651 {
2652 CAMLparam2 (start_page_v, dir_v);
2653 CAMLlocal1 (ret_v);
2654 int i, dir = Int_val (dir_v);
2655 int start_page = Int_val (start_page_v);
2656 int end_page = dir > 0 ? state.pagecount : -1;
2657 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
2658
2659 ret_v = Val_int (0);
2660 lock ("ml_findpage_with_links");
2661 for (i = start_page + dir; i != end_page; i += dir) {
2662 int found;
2663
2664 if (pdf) {
2665 pdf_page *page = NULL;
2666
2667 fz_try (state.ctx) {
2668 page = pdf_load_page (state.ctx, pdf, i);
2669 found = !!page->links || !!page->annots;
2670 }
2671 fz_catch (state.ctx) {
2672 found = 0;
2673 }
2674 if (page) {
2675 fz_drop_page (state.ctx, &page->super);
2676 }
2677 }
2678 else {
2679 fz_page *page = fz_load_page (state.ctx, state.doc, i);
2680 found = !!fz_load_links (state.ctx, page);
2681 fz_drop_page (state.ctx, page);
2682 }
2683
2684 if (found) {
2685 ret_v = caml_alloc_small (1, 1);
2686 Field (ret_v, 0) = Val_int (i);
2687 goto unlock;
2688 }
2689 }
2690 unlock:
2691 unlock ("ml_findpage_with_links");
2692 CAMLreturn (ret_v);
2693 }
2694
2695 enum { dir_first, dir_last };
2696 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2697
2698 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2699 {
2700 CAMLparam2 (ptr_v, dir_v);
2701 CAMLlocal2 (ret_v, pos_v);
2702 struct page *page;
2703 int dirtag, i, slinkindex;
2704 struct slink *found = NULL ,*slink;
2705 char *s = String_val (ptr_v);
2706
2707 page = parse_pointer ("ml_findlink", s);
2708 ret_v = Val_int (0);
2709 /* This is scary we are not taking locks here ensureslinks does
2710 not modify state and given that we obtained the page it can not
2711 disappear under us either */
2712 lock ("ml_findlink");
2713 ensureslinks (page);
2714
2715 if (Is_block (dir_v)) {
2716 dirtag = Tag_val (dir_v);
2717 switch (dirtag) {
2718 case dir_first_visible:
2719 {
2720 int x0, y0, dir, first_index, last_index;
2721
2722 pos_v = Field (dir_v, 0);
2723 x0 = Int_val (Field (pos_v, 0));
2724 y0 = Int_val (Field (pos_v, 1));
2725 dir = Int_val (Field (pos_v, 2));
2726
2727 if (dir >= 0) {
2728 dir = 1;
2729 first_index = 0;
2730 last_index = page->slinkcount;
2731 }
2732 else {
2733 first_index = page->slinkcount - 1;
2734 last_index = -1;
2735 }
2736
2737 for (i = first_index; i != last_index; i += dir) {
2738 slink = &page->slinks[i];
2739 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2740 found = slink;
2741 break;
2742 }
2743 }
2744 }
2745 break;
2746
2747 case dir_left:
2748 slinkindex = Int_val (Field (dir_v, 0));
2749 found = &page->slinks[slinkindex];
2750 for (i = slinkindex - 1; i >= 0; --i) {
2751 slink = &page->slinks[i];
2752 if (slink->bbox.x0 < found->bbox.x0) {
2753 found = slink;
2754 break;
2755 }
2756 }
2757 break;
2758
2759 case dir_right:
2760 slinkindex = Int_val (Field (dir_v, 0));
2761 found = &page->slinks[slinkindex];
2762 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2763 slink = &page->slinks[i];
2764 if (slink->bbox.x0 > found->bbox.x0) {
2765 found = slink;
2766 break;
2767 }
2768 }
2769 break;
2770
2771 case dir_down:
2772 slinkindex = Int_val (Field (dir_v, 0));
2773 found = &page->slinks[slinkindex];
2774 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2775 slink = &page->slinks[i];
2776 if (slink->bbox.y0 >= found->bbox.y0) {
2777 found = slink;
2778 break;
2779 }
2780 }
2781 break;
2782
2783 case dir_up:
2784 slinkindex = Int_val (Field (dir_v, 0));
2785 found = &page->slinks[slinkindex];
2786 for (i = slinkindex - 1; i >= 0; --i) {
2787 slink = &page->slinks[i];
2788 if (slink->bbox.y0 <= found->bbox.y0) {
2789 found = slink;
2790 break;
2791 }
2792 }
2793 break;
2794 }
2795 }
2796 else {
2797 dirtag = Int_val (dir_v);
2798 switch (dirtag) {
2799 case dir_first:
2800 found = page->slinks;
2801 break;
2802
2803 case dir_last:
2804 if (page->slinks) {
2805 found = page->slinks + (page->slinkcount - 1);
2806 }
2807 break;
2808 }
2809 }
2810 if (found) {
2811 ret_v = caml_alloc_small (2, 1);
2812 Field (ret_v, 0) = Val_int (found - page->slinks);
2813 }
2814
2815 unlock ("ml_findlink");
2816 CAMLreturn (ret_v);
2817 }
2818
2819 enum { uuri, ugoto, utext, uunexpected, ulaunch,
2820 unamed, uremote, uremotedest, uannot };
2821
2822 #define LINKTOVAL \
2823 { \
2824 int pageno; \
2825 \
2826 switch (link->dest.kind) { \
2827 case FZ_LINK_GOTO: \
2828 { \
2829 fz_point p; \
2830 \
2831 pageno = link->dest.ld.gotor.page; \
2832 p.x = 0; \
2833 p.y = 0; \
2834 \
2835 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2836 p.y = link->dest.ld.gotor.lt.y; \
2837 fz_transform_point (&p, &pdim->lctm); \
2838 if (p.y < 0) p.y = 0; \
2839 } \
2840 tup_v = caml_alloc_tuple (2); \
2841 ret_v = caml_alloc_small (1, ugoto); \
2842 Field (tup_v, 0) = Val_int (pageno); \
2843 Field (tup_v, 1) = Val_int (p.y); \
2844 Field (ret_v, 0) = tup_v; \
2845 } \
2846 break; \
2847 \
2848 case FZ_LINK_URI: \
2849 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2850 ret_v = caml_alloc_small (1, uuri); \
2851 Field (ret_v, 0) = str_v; \
2852 break; \
2853 \
2854 case FZ_LINK_LAUNCH: \
2855 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2856 ret_v = caml_alloc_small (1, ulaunch); \
2857 Field (ret_v, 0) = str_v; \
2858 break; \
2859 \
2860 case FZ_LINK_NAMED: \
2861 str_v = caml_copy_string (link->dest.ld.named.named); \
2862 ret_v = caml_alloc_small (1, unamed); \
2863 Field (ret_v, 0) = str_v; \
2864 break; \
2865 \
2866 case FZ_LINK_GOTOR: \
2867 { \
2868 int rty; \
2869 \
2870 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2871 pageno = link->dest.ld.gotor.page; \
2872 if (pageno == -1) { \
2873 gr_v = caml_copy_string (link->dest.ld.gotor.dest); \
2874 rty = uremotedest; \
2875 } \
2876 else { \
2877 gr_v = Val_int (pageno); \
2878 rty = uremote; \
2879 } \
2880 tup_v = caml_alloc_tuple (2); \
2881 ret_v = caml_alloc_small (1, rty); \
2882 Field (tup_v, 0) = str_v; \
2883 Field (tup_v, 1) = gr_v; \
2884 Field (ret_v, 0) = tup_v; \
2885 } \
2886 break; \
2887 \
2888 default: \
2889 { \
2890 char buf[80]; \
2891 \
2892 snprintf (buf, sizeof (buf), \
2893 "unhandled link kind %d", link->dest.kind); \
2894 str_v = caml_copy_string (buf); \
2895 ret_v = caml_alloc_small (1, uunexpected); \
2896 Field (ret_v, 0) = str_v; \
2897 } \
2898 break; \
2899 } \
2900 }
2901
2902 CAMLprim value ml_getlink (value ptr_v, value n_v)
2903 {
2904 CAMLparam2 (ptr_v, n_v);
2905 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
2906 fz_link *link;
2907 struct page *page;
2908 struct pagedim *pdim;
2909 char *s = String_val (ptr_v);
2910 struct slink *slink;
2911
2912 /* See ml_findlink for caveat */
2913
2914 ret_v = Val_int (0);
2915 page = parse_pointer ("ml_getlink", s);
2916 ensureslinks (page);
2917 pdim = &state.pagedims[page->pdimno];
2918 slink = &page->slinks[Int_val (n_v)];
2919 if (slink->tag == SLINK) {
2920 link = slink->u.link;
2921 LINKTOVAL;
2922 }
2923 else {
2924 ret_v = caml_alloc_small (1, uannot);
2925 tup_v = caml_alloc_tuple (2);
2926 Field (ret_v, 0) = tup_v;
2927 Field (tup_v, 0) = ptr_v;
2928 Field (tup_v, 1) = n_v;
2929 }
2930
2931 CAMLreturn (ret_v);
2932 }
2933
2934 CAMLprim value ml_getannotcontents (value ptr_v, value n_v)
2935 {
2936 CAMLparam2 (ptr_v, n_v);
2937 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
2938 if (pdf) {
2939 char *s = String_val (ptr_v);
2940 struct page *page;
2941 struct slink *slink;
2942
2943 page = parse_pointer ("ml_getannotcontent", s);
2944 slink = &page->slinks[Int_val (n_v)];
2945 CAMLreturn (caml_copy_string (
2946 pdf_annot_contents (state.ctx, pdf,
2947 (pdf_annot *) slink->u.annot)));
2948 }
2949 else {
2950 CAMLreturn (caml_copy_string (""));
2951 }
2952 }
2953
2954 CAMLprim value ml_getlinkcount (value ptr_v)
2955 {
2956 CAMLparam1 (ptr_v);
2957 struct page *page;
2958 char *s = String_val (ptr_v);
2959
2960 page = parse_pointer ("ml_getlinkcount", s);
2961 CAMLreturn (Val_int (page->slinkcount));
2962 }
2963
2964 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2965 {
2966 CAMLparam2 (ptr_v, n_v);
2967 CAMLlocal1 (ret_v);
2968 struct page *page;
2969 struct slink *slink;
2970 char *s = String_val (ptr_v);
2971 /* See ml_findlink for caveat */
2972
2973 page = parse_pointer ("ml_getlinkrect", s);
2974 ret_v = caml_alloc_tuple (4);
2975 ensureslinks (page);
2976
2977 slink = &page->slinks[Int_val (n_v)];
2978 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2979 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2980 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2981 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2982 unlock ("ml_getlinkrect");
2983 CAMLreturn (ret_v);
2984 }
2985
2986 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2987 {
2988 CAMLparam3 (ptr_v, x_v, y_v);
2989 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
2990 fz_link *link;
2991 struct annot *annot;
2992 struct page *page;
2993 char *ptr = String_val (ptr_v);
2994 int x = Int_val (x_v), y = Int_val (y_v);
2995 struct pagedim *pdim;
2996
2997 ret_v = Val_int (0);
2998 if (trylock ("ml_whatsunder")) {
2999 goto done;
3000 }
3001
3002 page = parse_pointer ("ml_whatsunder", ptr);
3003 pdim = &state.pagedims[page->pdimno];
3004 x += pdim->bounds.x0;
3005 y += pdim->bounds.y0;
3006
3007 {
3008 annot = getannot (page, x, y);
3009 if (annot) {
3010 int i, n = -1;
3011
3012 ensureslinks (page);
3013 for (i = 0; i < page->slinkcount; ++i) {
3014 if (page->slinks[i].tag == SANNOT
3015 && page->slinks[i].u.annot == annot->annot) {
3016 n = i;
3017 break;
3018 }
3019 }
3020 ret_v = caml_alloc_small (1, uannot);
3021 tup_v = caml_alloc_tuple (2);
3022 Field (ret_v, 0) = tup_v;
3023 Field (tup_v, 0) = ptr_v;
3024 Field (tup_v, 1) = Val_int (n);
3025 goto unlock;
3026 }
3027 }
3028
3029 link = getlink (page, x, y);
3030 if (link) {
3031 LINKTOVAL;
3032 }
3033 else {
3034 fz_rect *b;
3035 fz_page_block *pageb;
3036 fz_text_block *block;
3037
3038 ensuretext (page);
3039 for (pageb = page->text->blocks;
3040 pageb < page->text->blocks + page->text->len;
3041 ++pageb) {
3042 fz_text_line *line;
3043 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3044 block = pageb->u.text;
3045
3046 b = &block->bbox;
3047 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3048 continue;
3049
3050 for (line = block->lines;
3051 line < block->lines + block->len;
3052 ++line) {
3053 fz_text_span *span;
3054
3055 b = &line->bbox;
3056 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3057 continue;
3058
3059 for (span = line->first_span; span; span = span->next) {
3060 int charnum;
3061
3062 b = &span->bbox;
3063 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3064 continue;
3065
3066 for (charnum = 0; charnum < span->len; ++charnum) {
3067 fz_rect bbox;
3068 fz_text_char_bbox (state.ctx, &bbox, span, charnum);
3069 b = &bbox;
3070
3071 if (x >= b->x0 && x <= b->x1
3072 && y >= b->y0 && y <= b->y1) {
3073 fz_text_style *style = span->text->style;
3074 const char *n2 =
3075 style->font && style->font->name
3076 ? style->font->name
3077 : "Span has no font name"
3078 ;
3079 FT_FaceRec *face = style->font->ft_face;
3080 if (face && face->family_name) {
3081 char *s;
3082 char *n1 = face->family_name;
3083 size_t l1 = strlen (n1);
3084 size_t l2 = strlen (n2);
3085
3086 if (l1 != l2 || memcmp (n1, n2, l1)) {
3087 s = malloc (l1 + l2 + 2);
3088 if (s) {
3089 memcpy (s, n2, l2);
3090 s[l2] = '=';
3091 memcpy (s + l2 + 1, n1, l1 + 1);
3092 str_v = caml_copy_string (s);
3093 free (s);
3094 }
3095 }
3096 }
3097 if (str_v == Val_unit) {
3098 str_v = caml_copy_string (n2);
3099 }
3100 ret_v = caml_alloc_small (1, utext);
3101 Field (ret_v, 0) = str_v;
3102 goto unlock;
3103 }
3104 }
3105 }
3106 }
3107 }
3108 }
3109 unlock:
3110 unlock ("ml_whatsunder");
3111
3112 done:
3113 CAMLreturn (ret_v);
3114 }
3115
3116 enum { mark_page, mark_block, mark_line, mark_word };
3117
3118 static int uninteresting (int c)
3119 {
3120 return c == ' ' || c == '\n' || c == '\t' || c == '\n' || c == '\r'
3121 || ispunct (c);
3122 }
3123
3124 CAMLprim value ml_clearmark (value ptr_v)
3125 {
3126 CAMLparam1 (ptr_v);
3127 char *s = String_val (ptr_v);
3128 struct page *page;
3129
3130 if (trylock ("ml_clearmark")) {
3131 goto done;
3132 }
3133
3134 page = parse_pointer ("ml_clearmark", s);
3135 page->fmark.span = NULL;
3136 page->lmark.span = NULL;
3137 page->fmark.i = 0;
3138 page->lmark.i = 0;
3139
3140 unlock ("ml_clearmark");
3141 done:
3142 CAMLreturn (Val_unit);
3143 }
3144
3145 CAMLprim value ml_markunder (value ptr_v, value x_v, value y_v, value mark_v)
3146 {
3147 CAMLparam4 (ptr_v, x_v, y_v, mark_v);
3148 CAMLlocal1 (ret_v);
3149 fz_rect *b;
3150 struct page *page;
3151 fz_text_line *line;
3152 fz_page_block *pageb;
3153 fz_text_block *block;
3154 struct pagedim *pdim;
3155 int mark = Int_val (mark_v);
3156 char *s = String_val (ptr_v);
3157 int x = Int_val (x_v), y = Int_val (y_v);
3158
3159 ret_v = Val_bool (0);
3160 if (trylock ("ml_markunder")) {
3161 goto done;
3162 }
3163
3164 page = parse_pointer ("ml_markunder", s);
3165 pdim = &state.pagedims[page->pdimno];
3166
3167 ensuretext (page);
3168
3169 if (mark == mark_page) {
3170 int i;
3171 fz_page_block *pb1 = NULL, *pb2 = NULL;
3172
3173 for (i = 0; i < page->text->len; ++i) {
3174 if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
3175 pb1 = &page->text->blocks[i];
3176 break;
3177 }
3178 }
3179 if (!pb1) goto unlock;
3180
3181 for (i = page->text->len - 1; i >= 0; --i) {
3182 if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
3183 pb2 = &page->text->blocks[i];
3184 break;
3185 }
3186 }
3187 if (!pb2) goto unlock;
3188
3189 block = pb1->u.text;
3190
3191 page->fmark.i = 0;
3192 page->fmark.span = block->lines->first_span;
3193
3194 block = pb2->u.text;
3195 line = &block->lines[block->len - 1];
3196 page->lmark.i = line->last_span->len - 1;
3197 page->lmark.span = line->last_span;
3198 ret_v = Val_bool (1);
3199 goto unlock;
3200 }
3201
3202 x += pdim->bounds.x0;
3203 y += pdim->bounds.y0;
3204
3205 for (pageb = page->text->blocks;
3206 pageb < page->text->blocks + page->text->len;
3207 ++pageb) {
3208 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3209 block = pageb->u.text;
3210
3211 b = &block->bbox;
3212 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3213 continue;
3214
3215 if (mark == mark_block) {
3216 page->fmark.i = 0;
3217 page->fmark.span = block->lines->first_span;
3218
3219 line = &block->lines[block->len - 1];
3220 page->lmark.i = line->last_span->len - 1;
3221 page->lmark.span = line->last_span;
3222 ret_v = Val_bool (1);
3223 goto unlock;
3224 }
3225
3226 for (line = block->lines;
3227 line < block->lines + block->len;
3228 ++line) {
3229 fz_text_span *span;
3230
3231 b = &line->bbox;
3232 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3233 continue;
3234
3235 if (mark == mark_line) {
3236 page->fmark.i = 0;
3237 page->fmark.span = line->first_span;
3238
3239 page->lmark.i = line->last_span->len - 1;
3240 page->lmark.span = line->last_span;
3241 ret_v = Val_bool (1);
3242 goto unlock;
3243 }
3244
3245 for (span = line->first_span; span; span = span->next) {
3246 int charnum;
3247
3248 b = &span->bbox;
3249 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3250 continue;
3251
3252 for (charnum = 0; charnum < span->len; ++charnum) {
3253 fz_rect bbox;
3254 fz_text_char_bbox (state.ctx, &bbox, span, charnum);
3255 b = &bbox;
3256
3257 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1) {
3258 /* unicode ftw */
3259 int charnum2, charnum3 = -1, charnum4 = -1;
3260
3261 if (uninteresting (span->text[charnum].c)) goto unlock;
3262
3263 for (charnum2 = charnum; charnum2 >= 0; --charnum2) {
3264 if (uninteresting (span->text[charnum2].c)) {
3265 charnum3 = charnum2 + 1;
3266 break;
3267 }
3268 }
3269 if (charnum3 == -1) charnum3 = 0;
3270
3271 for (charnum2 = charnum + 1;
3272 charnum2 < span->len;
3273 ++charnum2) {
3274 if (uninteresting (span->text[charnum2].c)) break;
3275 charnum4 = charnum2;
3276 }
3277 if (charnum4 == -1) goto unlock;
3278
3279 page->fmark.i = charnum3;
3280 page->fmark.span = span;
3281
3282 page->lmark.i = charnum4;
3283 page->lmark.span = span;
3284 ret_v = Val_bool (1);
3285 goto unlock;
3286 }
3287 }
3288 }
3289 }
3290 }
3291 unlock:
3292 if (!Bool_val (ret_v)) {
3293 page->fmark.span = NULL;
3294 page->lmark.span = NULL;
3295 page->fmark.i = 0;
3296 page->lmark.i = 0;
3297 }
3298 unlock ("ml_markunder");
3299
3300 done:
3301 CAMLreturn (ret_v);
3302 }
3303
3304 CAMLprim value ml_rectofblock (value ptr_v, value x_v, value y_v)
3305 {
3306 CAMLparam3 (ptr_v, x_v, y_v);
3307 CAMLlocal2 (ret_v, res_v);
3308 fz_rect *b = NULL;
3309 struct page *page;
3310 fz_page_block *pageb;
3311 struct pagedim *pdim;
3312 char *s = String_val (ptr_v);
3313 int x = Int_val (x_v), y = Int_val (y_v);
3314
3315 ret_v = Val_int (0);
3316 if (trylock ("ml_rectofblock")) {
3317 goto done;
3318 }
3319
3320 page = parse_pointer ("ml_rectofblock", s);
3321 pdim = &state.pagedims[page->pdimno];
3322 x += pdim->bounds.x0;
3323 y += pdim->bounds.y0;
3324
3325 ensuretext (page);
3326
3327 for (pageb = page->text->blocks;
3328 pageb < page->text->blocks + page->text->len;
3329 ++pageb) {
3330 switch (pageb->type) {
3331 case FZ_PAGE_BLOCK_TEXT:
3332 b = &pageb->u.text->bbox;
3333 break;
3334
3335 case FZ_PAGE_BLOCK_IMAGE:
3336 b = &pageb->u.image->bbox;
3337 break;
3338
3339 default:
3340 continue;
3341 }
3342
3343 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1)
3344 break;
3345 b = NULL;
3346 }
3347 if (b) {
3348 res_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3349 ret_v = caml_alloc_small (1, 1);
3350 Store_double_field (res_v, 0, b->x0);
3351 Store_double_field (res_v, 1, b->x1);
3352 Store_double_field (res_v, 2, b->y0);
3353 Store_double_field (res_v, 3, b->y1);
3354 Field (ret_v, 0) = res_v;
3355 }
3356 unlock ("ml_rectofblock");
3357
3358 done:
3359 CAMLreturn (ret_v);
3360 }
3361
3362 CAMLprim value ml_seltext (value ptr_v, value rect_v)
3363 {
3364 CAMLparam2 (ptr_v, rect_v);
3365 fz_rect b;
3366 struct page *page;
3367 struct pagedim *pdim;
3368 char *s = String_val (ptr_v);
3369 int i, x0, x1, y0, y1, fi, li;
3370 fz_text_line *line;
3371 fz_page_block *pageb;
3372 fz_text_block *block;
3373 fz_text_span *span, *fspan, *lspan;
3374
3375 if (trylock ("ml_seltext")) {
3376 goto done;
3377 }
3378
3379 page = parse_pointer ("ml_seltext", s);
3380 ensuretext (page);
3381
3382 pdim = &state.pagedims[page->pdimno];
3383 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;
3384 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
3385 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
3386 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
3387
3388 if (y0 > y1) {
3389 int t = y0;
3390 y0 = y1;
3391 y1 = t;
3392 x0 = x1;
3393 x1 = t;
3394 }
3395
3396 if (0) {
3397 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3398 glColor3ub (128, 128, 128);
3399 recti (x0, y0, x1, y1);
3400 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3401 }
3402
3403 fi = page->fmark.i;
3404 fspan = page->fmark.span;
3405
3406 li = page->lmark.i;
3407 lspan = page->lmark.span;
3408
3409 for (pageb = page->text->blocks;
3410 pageb < page->text->blocks + page->text->len;
3411 ++pageb) {
3412 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3413 block = pageb->u.text;
3414 for (line = block->lines;
3415 line < block->lines + block->len;
3416 ++line) {
3417
3418 for (span = line->first_span; span; span = span->next) {
3419 for (i = 0; i < span->len; ++i) {
3420 int selected = 0;
3421
3422 fz_text_char_bbox (state.ctx, &b, span, i);
3423
3424 if (x0 >= b.x0 && x0 <= b.x1
3425 && y0 >= b.y0 && y0 <= b.y1) {
3426 fspan = span;
3427 fi = i;
3428 selected = 1;
3429 }
3430 if (x1 >= b.x0 && x1 <= b.x1
3431 && y1 >= b.y0 && y1 <= b.y1) {
3432 lspan = span;
3433 li = i;
3434 selected = 1;
3435 }
3436 if (0 && selected) {
3437 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3438 glColor3ub (128, 128, 128);
3439 recti (b.x0, b.y0, b.x1, b.y1);
3440 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3441 }
3442 }
3443 }
3444 }
3445 }
3446 if (x1 < x0 && fspan == lspan) {
3447 i = fi;
3448 span = fspan;
3449
3450 fi = li;
3451 fspan = lspan;
3452
3453 li = i;
3454 lspan = span;
3455 }
3456
3457 page->fmark.i = fi;
3458 page->fmark.span = fspan;
3459
3460 page->lmark.i = li;
3461 page->lmark.span = lspan;
3462
3463 unlock ("ml_seltext");
3464
3465 done:
3466 CAMLreturn (Val_unit);
3467 }
3468
3469 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
3470 {
3471 char buf[4];
3472 int i, len, ret;
3473
3474 for (i = a; i <= b; ++i) {
3475 len = fz_runetochar (buf, span->text[i].c);
3476 ret = fwrite (buf, len, 1, f);
3477
3478 if (ret != 1) {
3479 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
3480 len, ret, strerror (errno));
3481 return -1;
3482 }
3483 }
3484 return 0;
3485 }
3486
3487 #ifdef __CYGWIN__
3488 CAMLprim value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
3489 {
3490 caml_failwith ("ml_popen not implemented under Cygwin");
3491 }
3492 #else
3493 CAMLprim value ml_popen (value command_v, value fds_v)
3494 {
3495 CAMLparam2 (command_v, fds_v);
3496 CAMLlocal2 (l_v, tup_v);
3497 int ret;
3498 pid_t pid;
3499 char *msg = NULL;
3500 value earg_v = Nothing;
3501 posix_spawnattr_t attr;
3502 posix_spawn_file_actions_t fa;
3503 char *argv[] = { "/bin/sh", "-c", NULL, NULL };
3504
3505 argv[2] = String_val (command_v);
3506
3507 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3508 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3509 }
3510
3511 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3512 msg = "posix_spawnattr_init";
3513 goto fail1;
3514 }
3515
3516 #ifdef POSIX_SPAWN_USEVFORK
3517 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3518 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3519 goto fail;
3520 }
3521 #endif
3522
3523 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3524 int fd1, fd2;
3525
3526 tup_v = Field (l_v, 0);
3527 fd1 = Int_val (Field (tup_v, 0));
3528 fd2 = Int_val (Field (tup_v, 1));
3529 if (fd2 < 0) {
3530 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3531 msg = "posix_spawn_file_actions_addclose";
3532 earg_v = tup_v;
3533 goto fail;
3534 }
3535 }
3536 else {
3537 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3538 msg = "posix_spawn_file_actions_adddup2";
3539 earg_v = tup_v;
3540 goto fail;
3541 }
3542 }
3543 }
3544
3545 if ((ret = posix_spawn (&pid, "/bin/sh", &fa, &attr, argv, environ))) {
3546 msg = "posix_spawn";
3547 goto fail;
3548 }
3549
3550 fail:
3551 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3552 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3553 }
3554
3555 fail1:
3556 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3557 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3558 strerror (ret));
3559 }
3560
3561 if (msg)
3562 unix_error (ret, msg, earg_v);
3563
3564 CAMLreturn (Val_int (pid));
3565 }
3566 #endif
3567
3568 CAMLprim value ml_hassel (value ptr_v)
3569 {
3570 CAMLparam1 (ptr_v);
3571 CAMLlocal1 (ret_v);
3572 struct page *page;
3573 char *s = String_val (ptr_v);
3574
3575 ret_v = Val_bool (0);
3576 if (trylock ("ml_hassel")) {
3577 goto done;
3578 }
3579
3580 page = parse_pointer ("ml_hassel", s);
3581 ret_v = Val_bool (page->fmark.span && page->lmark.span);
3582 unlock ("ml_hassel");
3583 done:
3584 CAMLreturn (ret_v);
3585 }
3586
3587 CAMLprim value ml_copysel (value fd_v, value ptr_v)
3588 {
3589 CAMLparam2 (fd_v, ptr_v);
3590 FILE *f;
3591 int seen = 0;
3592 struct page *page;
3593 fz_text_line *line;
3594 fz_page_block *pageb;
3595 fz_text_block *block;
3596 int fd = Int_val (fd_v);
3597 char *s = String_val (ptr_v);
3598
3599 if (trylock ("ml_copysel")) {
3600 goto done;
3601 }
3602
3603 page = parse_pointer ("ml_copysel", s);
3604
3605 if (!page->fmark.span || !page->lmark.span) {
3606 fprintf (stderr, "nothing to copy on page %d\n", page->pageno);
3607 goto unlock;
3608 }
3609
3610 f = fdopen (fd, "w");
3611 if (!f) {
3612 fprintf (stderr, "failed to fdopen sel pipe (from fd %d): %s\n",
3613 fd, strerror (errno));
3614 f = stdout;
3615 }
3616
3617 for (pageb = page->text->blocks;
3618 pageb < page->text->blocks + page->text->len;
3619 ++pageb) {
3620 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3621 block = pageb->u.text;
3622 for (line = block->lines;
3623 line < block->lines + block->len;
3624 ++line) {
3625 fz_text_span *span;
3626
3627 for (span = line->first_span; span; span = span->next) {
3628 int a, b;
3629
3630 seen |= span == page->fmark.span || span == page->lmark.span;
3631 a = span == page->fmark.span ? page->fmark.i : 0;
3632 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3633
3634 if (seen) {
3635 if (pipespan (f, span, a, b)) {
3636 goto close;
3637 }
3638 if (span == page->lmark.span) {
3639 goto close;
3640 }
3641 if (span == line->last_span) {
3642 if (putc ('\n', f) == EOF) {
3643 fprintf (stderr,
3644 "failed break line on sel pipe: %s\n",
3645 strerror (errno));
3646 goto close;
3647 }
3648 }
3649 }
3650 }
3651 }
3652 }
3653 close:
3654 if (f != stdout) {
3655 int ret = fclose (f);
3656 fd = -1;
3657 if (ret == -1) {
3658 if (errno != ECHILD) {
3659 fprintf (stderr, "failed to close sel pipe: %s\n",
3660 strerror (errno));
3661 }
3662 }
3663 }
3664 unlock:
3665 unlock ("ml_copysel");
3666
3667 done:
3668 if (fd >= 0) {
3669 if (close (fd)) {
3670 fprintf (stderr, "failed to close sel pipe: %s\n",
3671 strerror (errno));
3672 }
3673 }
3674 CAMLreturn (Val_unit);
3675 }
3676
3677 CAMLprim value ml_getpdimrect (value pagedimno_v)
3678 {
3679 CAMLparam1 (pagedimno_v);
3680 CAMLlocal1 (ret_v);
3681 int pagedimno = Int_val (pagedimno_v);
3682 fz_rect box;
3683
3684 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3685 if (trylock ("ml_getpdimrect")) {
3686 box = fz_empty_rect;
3687 }
3688 else {
3689 box = state.pagedims[pagedimno].mediabox;
3690 unlock ("ml_getpdimrect");
3691 }
3692
3693 Store_double_field (ret_v, 0, box.x0);
3694 Store_double_field (ret_v, 1, box.x1);
3695 Store_double_field (ret_v, 2, box.y0);
3696 Store_double_field (ret_v, 3, box.y1);
3697
3698 CAMLreturn (ret_v);
3699 }
3700
3701 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3702 value dw_v, value cols_v)
3703 {
3704 CAMLparam4 (winw_v, winh_v, dw_v, cols_v);
3705 CAMLlocal1 (ret_v);
3706 int i;
3707 double zoom = -1.;
3708 double maxh = 0.0;
3709 struct pagedim *p;
3710 double winw = Int_val (winw_v);
3711 double winh = Int_val (winh_v);
3712 double dw = Int_val (dw_v);
3713 double cols = Int_val (cols_v);
3714 double pw = 1.0, ph = 1.0;
3715
3716 if (trylock ("ml_zoom_for_height")) {
3717 goto done;
3718 }
3719
3720 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3721 double w = p->pagebox.x1 / cols;
3722 double h = p->pagebox.y1;
3723 if (h > maxh) {
3724 maxh = h;
3725 ph = h;
3726 if (state.fitmodel != FitProportional) pw = w;
3727 }
3728 if ((state.fitmodel == FitProportional) && w > pw) pw = w;
3729 }
3730
3731 zoom = (((winh / ph) * pw) + dw) / winw;
3732 unlock ("ml_zoom_for_height");
3733 done:
3734 ret_v = caml_copy_double (zoom);
3735 CAMLreturn (ret_v);
3736 }
3737
3738 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3739 {
3740 CAMLparam4 (pt_v, x_v, y_v, string_v);
3741 CAMLlocal1 (ret_v);
3742 int pt = Int_val(pt_v);
3743 int x = Int_val (x_v);
3744 int y = Int_val (y_v);
3745 double w;
3746
3747 w = draw_string (state.face, pt, x, y, String_val (string_v));
3748 ret_v = caml_copy_double (w);
3749 CAMLreturn (ret_v);
3750 }
3751
3752 CAMLprim value ml_measure_string (value pt_v, value string_v)
3753 {
3754 CAMLparam2 (pt_v, string_v);
3755 CAMLlocal1 (ret_v);
3756 int pt = Int_val (pt_v);
3757 double w;
3758
3759 w = measure_string (state.face, pt, String_val (string_v));
3760 ret_v = caml_copy_double (w);
3761 CAMLreturn (ret_v);
3762 }
3763
3764 CAMLprim value ml_getpagebox (value opaque_v)
3765 {
3766 CAMLparam1 (opaque_v);
3767 CAMLlocal1 (ret_v);
3768 fz_rect rect;
3769 fz_irect bbox;
3770 fz_matrix ctm;
3771 fz_device *dev;
3772 char *s = String_val (opaque_v);
3773 struct page *page = parse_pointer ("ml_getpagebox", s);
3774
3775 ret_v = caml_alloc_tuple (4);
3776 dev = fz_new_bbox_device (state.ctx, &rect);
3777 dev->hints |= FZ_IGNORE_SHADE;
3778
3779 ctm = pagectm (page);
3780 fz_run_page (state.ctx, page->fzpage, dev, &ctm, NULL);
3781
3782 fz_drop_device (state.ctx, dev);
3783 fz_round_rect (&bbox, &rect);
3784 Field (ret_v, 0) = Val_int (bbox.x0);
3785 Field (ret_v, 1) = Val_int (bbox.y0);
3786 Field (ret_v, 2) = Val_int (bbox.x1);
3787 Field (ret_v, 3) = Val_int (bbox.y1);
3788
3789 CAMLreturn (ret_v);
3790 }
3791
3792 CAMLprim value ml_setaalevel (value level_v)
3793 {
3794 CAMLparam1 (level_v);
3795
3796 state.aalevel = Int_val (level_v);
3797 CAMLreturn (Val_unit);
3798 }
3799
3800 #pragma GCC diagnostic push
3801 #pragma GCC diagnostic ignored "-Wvariadic-macros"
3802 #include <X11/Xlib.h>
3803 #include <X11/cursorfont.h>
3804 #pragma GCC diagnostic pop
3805
3806 #include <GL/glx.h>
3807
3808 static const int shapes[] = {
3809 XC_arrow, XC_hand2, XC_exchange, XC_fleur, XC_xterm
3810 };
3811
3812 #define CURS_COUNT (sizeof (shapes) / sizeof (shapes[0]))
3813
3814 static struct {
3815 Window wid;
3816 Display *dpy;
3817 GLXContext ctx;
3818 XVisualInfo *visual;
3819 Cursor curs[CURS_COUNT];
3820 } glx;
3821
3822 CAMLprim value ml_glxinit (value display_v, value wid_v, value screen_v)
3823 {
3824 CAMLparam3 (display_v, wid_v, screen_v);
3825 int attribs[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3826
3827 glx.dpy = XOpenDisplay (String_val (display_v));
3828 if (!glx.dpy) {
3829 caml_failwith ("XOpenDisplay");
3830 }
3831
3832 glx.visual = glXChooseVisual (glx.dpy, Int_val (screen_v), attribs);
3833 if (!glx.visual) {
3834 XCloseDisplay (glx.dpy);
3835 caml_failwith ("glXChooseVisual");
3836 }
3837
3838 for (size_t n = 0; n < CURS_COUNT; ++n) {
3839 glx.curs[n] = XCreateFontCursor (glx.dpy, shapes[n]);
3840 }
3841
3842 glx.wid = Int_val (wid_v);
3843 CAMLreturn (Val_int (glx.visual->visualid));
3844 }
3845
3846 CAMLprim value ml_glxcompleteinit (value unit_v)
3847 {
3848 CAMLparam1 (unit_v);
3849
3850 glx.ctx = glXCreateContext (glx.dpy, glx.visual, NULL, True);
3851 if (!glx.ctx) {
3852 caml_failwith ("glXCreateContext");
3853 }
3854
3855 XFree (glx.visual);
3856 glx.visual = NULL;
3857
3858 if (!glXMakeCurrent (glx.dpy, glx.wid, glx.ctx)) {
3859 glXDestroyContext (glx.dpy, glx.ctx);
3860 glx.ctx = NULL;
3861 caml_failwith ("glXMakeCurrent");
3862 }
3863 CAMLreturn (Val_unit);
3864 }
3865
3866 CAMLprim value ml_setcursor (value cursor_v)
3867 {
3868 CAMLparam1 (cursor_v);
3869 size_t cursn = Int_val (cursor_v);
3870 XSetWindowAttributes wa;
3871
3872 if (cursn >= CURS_COUNT) caml_failwith ("cursor index out of range");
3873 wa.cursor = glx.curs[cursn];
3874 XChangeWindowAttributes (glx.dpy, glx.wid, CWCursor, &wa);
3875 XFlush (glx.dpy);
3876 CAMLreturn (Val_unit);
3877 }
3878
3879 CAMLprim value ml_swapb (value unit_v)
3880 {
3881 CAMLparam1 (unit_v);
3882 glXSwapBuffers (glx.dpy, glx.wid);
3883 CAMLreturn (Val_unit);
3884 }
3885
3886 #include "keysym2ucs.c"
3887
3888 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3889 {
3890 CAMLparam1 (keysym_v);
3891 CAMLlocal1 (str_v);
3892 KeySym keysym = Int_val (keysym_v);
3893 Rune rune;
3894 int len;
3895 char buf[5];
3896
3897 rune = keysym2ucs (keysym);
3898 len = fz_runetochar (buf, rune);
3899 buf[len] = 0;
3900 str_v = caml_copy_string (buf);
3901 CAMLreturn (str_v);
3902 }
3903
3904 enum { piunknown, pilinux, piosx, pisun, pibsd, picygwin };
3905
3906 CAMLprim value ml_platform (value unit_v)
3907 {
3908 CAMLparam1 (unit_v);
3909 CAMLlocal2 (tup_v, arr_v);
3910 int platid = piunknown;
3911 struct utsname buf;
3912
3913 #if defined __linux__
3914 platid = pilinux;
3915 #elif defined __CYGWIN__
3916 platid = picygwin;
3917 #elif defined __DragonFly__ || defined __FreeBSD__
3918 || defined __OpenBSD__ || defined __NetBSD__
3919 platid = pibsd;
3920 #elif defined __sun__
3921 platid = pisun;
3922 #elif defined __APPLE__
3923 platid = piosx;
3924 #endif
3925 if (uname (&buf)) err (1, "uname");
3926
3927 tup_v = caml_alloc_tuple (2);
3928 {
3929 char const *sar[] = {
3930 buf.sysname,
3931 buf.release,
3932 buf.version,
3933 buf.machine,
3934 NULL
3935 };
3936 arr_v = caml_copy_string_array (sar);
3937 }
3938 Field (tup_v, 0) = Val_int (platid);
3939 Field (tup_v, 1) = arr_v;
3940 CAMLreturn (tup_v);
3941 }
3942
3943 CAMLprim value ml_cloexec (value fd_v)
3944 {
3945 CAMLparam1 (fd_v);
3946 int fd = Int_val (fd_v);
3947
3948 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3949 uerror ("fcntl", Nothing);
3950 }
3951 CAMLreturn (Val_unit);
3952 }
3953
3954 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3955 {
3956 CAMLparam2 (w_v, h_v);
3957 CAMLlocal1 (ret_v);
3958 struct pbo *pbo;
3959 int w = Int_val (w_v);
3960 int h = Int_val (h_v);
3961 int cs = Int_val (cs_v);
3962
3963 if (state.pbo_usable) {
3964 pbo = calloc (sizeof (*pbo), 1);
3965 if (!pbo) {
3966 err (1, "calloc pbo");
3967 }
3968
3969 switch (cs) {
3970 case 0:
3971 case 1:
3972 pbo->size = w*h*4;
3973 break;
3974 case 2:
3975 pbo->size = w*h*2;
3976 break;
3977 default:
3978 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3979 }
3980
3981 state.glGenBuffersARB (1, &pbo->id);
3982 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3983 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3984 NULL, GL_STREAM_DRAW);
3985 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3986 GL_READ_WRITE);
3987 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3988 if (!pbo->ptr) {
3989 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3990 state.glDeleteBuffersARB (1, &pbo->id);
3991 free (pbo);
3992 ret_v = caml_copy_string ("0");
3993 }
3994 else {
3995 int res;
3996 char *s;
3997
3998 res = snprintf (NULL, 0, "%" FMT_ptr, FMT_ptr_cast (pbo));
3999 if (res < 0) {
4000 err (1, "snprintf %" FMT_ptr " failed", FMT_ptr_cast (pbo));
4001 }
4002 s = malloc (res+1);
4003 if (!s) {
4004 err (1, "malloc %d bytes failed", res+1);
4005 }
4006 res = sprintf (s, "%" FMT_ptr, FMT_ptr_cast (pbo));
4007 if (res < 0) {
4008 err (1, "sprintf %" FMT_ptr " failed", FMT_ptr_cast (pbo));
4009 }
4010 ret_v = caml_copy_string (s);
4011 free (s);
4012 }
4013 }
4014 else {
4015 ret_v = caml_copy_string ("0");
4016 }
4017 CAMLreturn (ret_v);
4018 }
4019
4020 CAMLprim value ml_freepbo (value s_v)
4021 {
4022 CAMLparam1 (s_v);
4023 char *s = String_val (s_v);
4024 struct tile *tile = parse_pointer ("ml_freepbo", s);
4025
4026 if (tile->pbo) {
4027 state.glDeleteBuffersARB (1, &tile->pbo->id);
4028 tile->pbo->id = -1;
4029 tile->pbo->ptr = NULL;
4030 tile->pbo->size = -1;
4031 }
4032 CAMLreturn (Val_unit);
4033 }
4034
4035 CAMLprim value ml_unmappbo (value s_v)
4036 {
4037 CAMLparam1 (s_v);
4038 char *s = String_val (s_v);
4039 struct tile *tile = parse_pointer ("ml_unmappbo", s);
4040
4041 if (tile->pbo) {
4042 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
4043 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
4044 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
4045 }
4046 tile->pbo->ptr = NULL;
4047 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
4048 }
4049 CAMLreturn (Val_unit);
4050 }
4051
4052 static void setuppbo (void)
4053 {
4054 #define GGPA(n) (*(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n))
4055 state.pbo_usable = GGPA (glBindBufferARB)
4056 && GGPA (glUnmapBufferARB)
4057 && GGPA (glMapBufferARB)
4058 && GGPA (glBufferDataARB)
4059 && GGPA (glGenBuffersARB)
4060 && GGPA (glDeleteBuffersARB);
4061 #undef GGPA
4062 }
4063
4064 CAMLprim value ml_pbo_usable (value unit_v)
4065 {
4066 CAMLparam1 (unit_v);
4067 CAMLreturn (Val_bool (state.pbo_usable));
4068 }
4069
4070 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
4071 {
4072 CAMLparam3 (ptr_v, x_v, y_v);
4073 CAMLlocal2 (ret_v, tup_v);
4074 struct page *page;
4075 char *s = String_val (ptr_v);
4076 int x = Int_val (x_v), y = Int_val (y_v);
4077 struct pagedim *pdim;
4078 fz_point p;
4079 fz_matrix ctm;
4080
4081 page = parse_pointer ("ml_unproject", s);
4082 pdim = &state.pagedims[page->pdimno];
4083
4084 ret_v = Val_int (0);
4085 if (trylock ("ml_unproject")) {
4086 goto done;
4087 }
4088
4089 if (pdf_specifics (state.ctx, state.doc)) {
4090 trimctm ((pdf_page *) page->fzpage, page->pdimno);
4091 ctm = state.pagedims[page->pdimno].tctm;
4092 }
4093 else {
4094 ctm = fz_identity;
4095 }
4096 p.x = x + pdim->bounds.x0;
4097 p.y = y + pdim->bounds.y0;
4098
4099 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
4100 fz_invert_matrix (&ctm, &ctm);
4101 fz_transform_point (&p, &ctm);
4102
4103 tup_v = caml_alloc_tuple (2);
4104 ret_v = caml_alloc_small (1, 1);
4105 Field (tup_v, 0) = Val_int (p.x);
4106 Field (tup_v, 1) = Val_int (p.y);
4107 Field (ret_v, 0) = tup_v;
4108
4109 unlock ("ml_unproject");
4110 done:
4111 CAMLreturn (ret_v);
4112 }
4113
4114 CAMLprim value ml_addannot (value ptr_v, value x_v, value y_v,
4115 value contents_v)
4116 {
4117 CAMLparam4 (ptr_v, x_v, y_v, contents_v);
4118 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
4119
4120 if (pdf) {
4121 pdf_annot *annot;
4122 struct page *page;
4123 fz_point p;
4124 char *s = String_val (ptr_v);
4125
4126 page = parse_pointer ("ml_addannot", s);
4127 annot = pdf_create_annot (state.ctx, pdf,
4128 (pdf_page *) page->fzpage, FZ_ANNOT_TEXT);
4129 p.x = Int_val (x_v);
4130 p.y = Int_val (y_v);
4131 pdf_set_annot_contents (state.ctx, pdf, annot, String_val (contents_v));
4132 pdf_set_text_annot_position (state.ctx, pdf, annot, p);
4133 state.dirty = 1;
4134 }
4135 CAMLreturn (Val_unit);
4136 }
4137
4138 CAMLprim value ml_delannot (value ptr_v, value n_v)
4139 {
4140 CAMLparam2 (ptr_v, n_v);
4141 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
4142
4143 if (pdf) {
4144 struct page *page;
4145 char *s = String_val (ptr_v);
4146 struct slink *slink;
4147
4148 page = parse_pointer ("ml_delannot", s);
4149 slink = &page->slinks[Int_val (n_v)];
4150 pdf_delete_annot (state.ctx, pdf,
4151 (pdf_page *) page->fzpage,
4152 (pdf_annot *) slink->u.annot);
4153 state.dirty = 1;
4154 }
4155 CAMLreturn (Val_unit);
4156 }
4157
4158 CAMLprim value ml_modannot (value ptr_v, value n_v, value str_v)
4159 {
4160 CAMLparam3 (ptr_v, n_v, str_v);
4161 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
4162
4163 if (pdf) {
4164 struct page *page;
4165 char *s = String_val (ptr_v);
4166 struct slink *slink;
4167
4168 page = parse_pointer ("ml_modannot", s);
4169 slink = &page->slinks[Int_val (n_v)];
4170 pdf_set_annot_contents (state.ctx, pdf, (pdf_annot *) slink->u.annot,
4171 String_val (str_v));
4172 state.dirty = 1;
4173 }
4174 CAMLreturn (Val_unit);
4175 }
4176
4177 CAMLprim value ml_hasunsavedchanges (value unit_v)
4178 {
4179 CAMLparam1 (unit_v);
4180 CAMLreturn (Val_bool (state.dirty));
4181 }
4182
4183 CAMLprim value ml_savedoc (value path_v)
4184 {
4185 CAMLparam1 (path_v);
4186 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
4187
4188 if (pdf) {
4189 pdf_write_document (state.ctx, pdf, String_val (path_v), NULL);
4190 }
4191 CAMLreturn (Val_unit);
4192 }
4193
4194 static void makestippletex (void)
4195 {
4196 const char pixels[] = "\xff\xff\0\0";
4197 glGenTextures (1, &state.stid);
4198 glBindTexture (GL_TEXTURE_1D, state.stid);
4199 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
4200 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
4201 glTexImage1D (
4202 GL_TEXTURE_1D,
4203 0,
4204 GL_ALPHA,
4205 4,
4206 0,
4207 GL_ALPHA,
4208 GL_UNSIGNED_BYTE,
4209 pixels
4210 );
4211 }
4212
4213 CAMLprim value ml_fz_version (value UNUSED_ATTR unit_v)
4214 {
4215 return caml_copy_string (FZ_VERSION);
4216 }
4217
4218 #ifdef USE_FONTCONFIG
4219 static struct {
4220 int inited;
4221 FcConfig *config;
4222 } fc;
4223
4224 static fz_font *fc_load_system_font_func (fz_context *ctx,
4225 const char *name,
4226 int bold,
4227 int italic,
4228 int UNUSED_ATTR needs_exact_metrics)
4229 {
4230 char *buf;
4231 size_t i, size;
4232 fz_font *font;
4233 FcChar8 *path;
4234 FcResult result;
4235 FcPattern *pat, *pat1;
4236
4237 lprintf ("looking up %s bold:%d italic:%d needs_exact_metrics:%d\n",
4238 name, bold, italic, needs_exact_metrics);
4239 if (!fc.inited) {
4240 fc.inited = 1;
4241 fc.config = FcInitLoadConfigAndFonts ();
4242 if (!fc.config) {
4243 lprintf ("FcInitLoadConfigAndFonts failed\n");
4244 return NULL;
4245 }
4246 }
4247 if (!fc.config) return NULL;
4248
4249 size = strlen (name);
4250 if (bold) size += sizeof (":bold") - 1;
4251 if (italic) size += sizeof (":italic") - 1;
4252 size += 1;
4253
4254 buf = malloc (size);
4255 if (!buf) {
4256 err (1, "malloc %zu failed", size);
4257 }
4258
4259 strcpy (buf, name);
4260 if (bold && italic) {
4261 strcat (buf, ":bold:italic");
4262 }
4263 else {
4264 if (bold) strcat (buf, ":bold");
4265 if (italic) strcat (buf, ":italic");
4266 }
4267 for (i = 0; i < size; ++i) {
4268 if (buf[i] == ',' || buf[i] == '-') buf[i] = ':';
4269 }
4270
4271 lprintf ("fcbuf=%s\n", buf);
4272 pat = FcNameParse ((FcChar8 *) buf);
4273 if (!pat) {
4274 printd ("emsg FcNameParse failed\n");
4275 free (buf);
4276 return NULL;
4277 }
4278
4279 if (!FcConfigSubstitute (fc.config, pat, FcMatchPattern)) {
4280 printd ("emsg FcConfigSubstitute failed\n");
4281 free (buf);
4282 return NULL;
4283 }
4284 FcDefaultSubstitute (pat);
4285
4286 pat1 = FcFontMatch (fc.config, pat, &result);
4287 if (!pat1) {
4288 printd ("emsg FcFontMatch failed\n");
4289 FcPatternDestroy (pat);
4290 free (buf);
4291 return NULL;
4292 }
4293
4294 if (FcPatternGetString (pat1, FC_FILE, 0, &path) != FcResultMatch) {
4295 printd ("emsg FcPatternGetString failed\n");
4296 FcPatternDestroy (pat);
4297 FcPatternDestroy (pat1);
4298 free (buf);
4299 return NULL;
4300 }
4301
4302 #if 0
4303 printd ("emsg name=%s path=%s\n", name, path);
4304 #endif
4305 font = fz_new_font_from_file (ctx, name, (char *) path, 0, 0);
4306 FcPatternDestroy (pat);
4307 FcPatternDestroy (pat1);
4308 free (buf);
4309 return font;
4310 }
4311 #endif
4312
4313 CAMLprim value ml_init (value csock_v, value params_v)
4314 {
4315 CAMLparam2 (csock_v, params_v);
4316 CAMLlocal2 (trim_v, fuzz_v);
4317 int ret;
4318 int texcount;
4319 char *fontpath;
4320 int colorspace;
4321 int mustoresize;
4322 int haspboext;
4323
4324 state.csock = Int_val (csock_v);
4325 state.rotate = Int_val (Field (params_v, 0));
4326 state.fitmodel = Int_val (Field (params_v, 1));
4327 trim_v = Field (params_v, 2);
4328 texcount = Int_val (Field (params_v, 3));
4329 state.sliceheight = Int_val (Field (params_v, 4));
4330 mustoresize = Int_val (Field (params_v, 5));
4331 colorspace = Int_val (Field (params_v, 6));
4332 fontpath = String_val (Field (params_v, 7));
4333
4334 if (caml_string_length (Field (params_v, 8)) > 0) {
4335 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
4336
4337 if (!state.trimcachepath) {
4338 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
4339 strerror (errno));
4340 }
4341 }
4342 haspboext = Bool_val (Field (params_v, 9));
4343
4344 state.ctx = fz_new_context (NULL, NULL, mustoresize);
4345 fz_register_document_handlers (state.ctx);
4346
4347 #ifdef USE_FONTCONFIG
4348 if (Bool_val (Field (params_v, 10))) {
4349 fz_install_load_system_font_funcs (
4350 state.ctx, fc_load_system_font_func, NULL
4351 );
4352 }
4353 #endif
4354
4355 state.trimmargins = Bool_val (Field (trim_v, 0));
4356 fuzz_v = Field (trim_v, 1);
4357 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
4358 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
4359 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
4360 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
4361
4362 set_tex_params (colorspace);
4363
4364 if (*fontpath) {
4365 #ifndef USE_FONTCONFIG
4366 state.face = load_font (fontpath);
4367 #else
4368 FcChar8 *path;
4369 FcResult result;
4370 char *buf = fontpath;
4371 FcPattern *pat, *pat1;
4372
4373 fc.inited = 1;
4374 fc.config = FcInitLoadConfigAndFonts ();
4375 if (!fc.config) {
4376 errx (1, "FcInitLoadConfigAndFonts failed");
4377 }
4378
4379 pat = FcNameParse ((FcChar8 *) buf);
4380 if (!pat) {
4381 errx (1, "FcNameParse failed");
4382 }
4383
4384 if (!FcConfigSubstitute (fc.config, pat, FcMatchPattern)) {
4385 errx (1, "FcConfigSubstitute failed");
4386 }
4387 FcDefaultSubstitute (pat);
4388
4389 pat1 = FcFontMatch (fc.config, pat, &result);
4390 if (!pat1) {
4391 errx (1, "FcFontMatch failed");
4392 }
4393
4394 if (FcPatternGetString (pat1, FC_FILE, 0, &path) != FcResultMatch) {
4395 errx (1, "FcPatternGetString failed");
4396 }
4397
4398 state.face = load_font ((char *) path);
4399 FcPatternDestroy (pat);
4400 FcPatternDestroy (pat1);
4401 #endif
4402 }
4403 else {
4404 unsigned int len;
4405 void *base = pdf_lookup_substitute_font (state.ctx, 0, 0, 0, 0, &len);
4406
4407 state.face = load_builtin_font (base, len);
4408 }
4409 if (!state.face) _exit (1);
4410
4411 realloctexts (texcount);
4412
4413 if (haspboext) {
4414 setuppbo ();
4415 }
4416
4417 makestippletex ();
4418
4419 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
4420 if (ret) {
4421 errx (1, "pthread_create: %s", strerror (ret));
4422 }
4423
4424 CAMLreturn (Val_unit);
4425 }
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