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Properly cleanup pdflut
[llpp.git] / link.c
blobd5b965a95309097517ec5ad010a55aaef84787db
1 /* lots of code c&p-ed directly from mupdf */
2 #include <errno.h>
3 #include <stdio.h>
4 #include <ctype.h>
5 #include <string.h>
6 #include <stdlib.h>
7 #include <signal.h>
8 #include <wchar.h>
9
10 #include <unistd.h>
11 #include <pthread.h>
12 #include <sys/time.h>
13 #include <sys/types.h>
14 #include <sys/ioctl.h>
15 #include <sys/utsname.h>
16
17 #ifdef __CYGWIN__
18 #include <cygwin/socket.h> /* FIONREAD */
19 #else
20 #include <spawn.h>
21 #endif
22
23 #include <regex.h>
24 #include <stdarg.h>
25 #include <limits.h>
26 #include <inttypes.h>
27
28 #include <GL/gl.h>
29
30 #include <caml/fail.h>
31 #include <caml/alloc.h>
32 #include <caml/memory.h>
33 #include <caml/unixsupport.h>
34
35 #include <mupdf/fitz.h>
36 #include <mupdf/cbz.h>
37 #include <mupdf/pdf.h>
38 #include <mupdf/xps.h>
39 #include <mupdf/img.h>
40
41 #include <ft2build.h>
42 #include FT_FREETYPE_H
43
44 #ifdef USE_FONTCONFIG
45 #include <fontconfig/fontconfig.h>
46 #endif
47
48 #define PIGGYBACK
49 #define CACHE_PAGEREFS
50
51 #ifndef __USE_GNU
52 extern char **environ;
53 #endif
54
55 #define MIN(a,b) ((a) < (b) ? (a) : (b))
56 #define MAX(a,b) ((a) > (b) ? (a) : (b))
57
58 #if defined __GNUC__
59 #define NORETURN_ATTR __attribute__ ((noreturn))
60 #define UNUSED_ATTR __attribute__ ((unused))
61 #if !defined __clang__
62 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
63 #else
64 #define OPTIMIZE_ATTR(n)
65 #endif
66 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
67 #else
68 #define NORETURN_ATTR
69 #define UNUSED_ATTR
70 #define OPTIMIZE_ATTR(n)
71 #define GCC_FMT_ATTR(a, b)
72 #endif
73
74 #define FMT_s "zu"
75
76 #define FMT_ptr PRIxPTR
77 #define SCN_ptr SCNxPTR
78 #define FMT_ptr_cast(p) ((uintptr_t) (p))
79 #define SCN_ptr_cast(p) ((uintptr_t *) (p))
80
81 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
82 err (int exitcode, const char *fmt, ...)
83 {
84 va_list ap;
85 int savederrno;
86
87 savederrno = errno;
88 va_start (ap, fmt);
89 vfprintf (stderr, fmt, ap);
90 va_end (ap);
91 fprintf (stderr, ": %s\n", strerror (savederrno));
92 fflush (stderr);
93 _exit (exitcode);
94 }
95
96 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
97 errx (int exitcode, const char *fmt, ...)
98 {
99 va_list ap;
100
101 va_start (ap, fmt);
102 vfprintf (stderr, fmt, ap);
103 va_end (ap);
104 fputc ('\n', stderr);
105 fflush (stderr);
106 _exit (exitcode);
107 }
108
109 #ifndef GL_TEXTURE_RECTANGLE_ARB
110 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
111 #endif
112
113 #ifndef GL_BGRA
114 #define GL_BGRA 0x80E1
115 #endif
116
117 #ifndef GL_UNSIGNED_INT_8_8_8_8
118 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
119 #endif
120
121 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
122 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
123 #endif
124
125 #if 0
126 #define lprintf printf
127 #else
128 #define lprintf(...)
129 #endif
130
131 #define ARSERT(cond) for (;;) { \
132 if (!(cond)) { \
133 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
134 } \
135 break; \
136 }
137
138 struct slice {
139 int h;
140 int texindex;
141 };
142
143 struct tile {
144 int w, h;
145 int slicecount;
146 int sliceheight;
147 struct pbo *pbo;
148 fz_pixmap *pixmap;
149 struct slice slices[1];
150 };
151
152 struct pagedim {
153 int pageno;
154 int rotate;
155 int left;
156 int tctmready;
157 fz_irect bounds;
158 fz_rect pagebox;
159 fz_rect mediabox;
160 fz_matrix ctm, zoomctm, lctm, tctm;
161 };
162
163 struct slink {
164 fz_irect bbox;
165 fz_link *link;
166 };
167
168 enum { DNONE, DPDF, DXPS, DCBZ, DIMG };
169
170 struct page {
171 int tgen;
172 int sgen;
173 int type;
174 int pageno;
175 int pdimno;
176 fz_text_page *text;
177 fz_text_sheet *sheet;
178 union {
179 void *ptr;
180 pdf_page *pdfpage;
181 xps_page *xpspage;
182 cbz_page *cbzpage;
183 image_page *imgpage;
184 } u;
185 fz_display_list *dlist;
186 int slinkcount;
187 struct slink *slinks;
188 struct mark {
189 int i;
190 fz_text_span *span;
191 } fmark, lmark;
192 void (*freepage) (void *);
193 };
194
195 struct {
196 int type;
197 int sliceheight;
198 struct pagedim *pagedims;
199 int pagecount;
200 int pagedimcount;
201 union {
202 pdf_document *pdf;
203 xps_document *xps;
204 cbz_document *cbz;
205 image_document *img;
206 } u;
207 fz_context *ctx;
208 int w, h;
209
210 int texindex;
211 int texcount;
212 GLuint *texids;
213
214 GLenum texiform;
215 GLenum texform;
216 GLenum texty;
217
218 fz_colorspace *colorspace;
219
220 struct {
221 int w, h;
222 struct slice *slice;
223 } *texowners;
224
225 int rotate;
226 enum { FitWidth, FitProportional, FitPage } fitmodel;
227 int trimmargins;
228 int needoutline;
229 int gen;
230 int aalevel;
231
232 int trimanew;
233 fz_irect trimfuzz;
234 fz_pixmap *pig;
235
236 pthread_t thread;
237 int csock;
238 FT_Face face;
239
240 void (*closedoc) (void);
241 void (*freepage) (void *);
242
243 char *trimcachepath;
244 int cxack;
245
246 GLuint stid;
247
248 int pbo_usable;
249 void (*glBindBufferARB) (GLenum, GLuint);
250 GLboolean (*glUnmapBufferARB) (GLenum);
251 void *(*glMapBufferARB) (GLenum, GLenum);
252 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
253 void (*glGenBuffersARB) (GLsizei, GLuint *);
254 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
255
256 GLfloat texcoords[8];
257 GLfloat vertices[16];
258
259 #ifdef CACHE_PAGEREFS
260 struct {
261 int idx;
262 int count;
263 pdf_obj **objs;
264 pdf_document *pdf;
265 } pdflut;
266 #endif
267 } state;
268
269 struct pbo {
270 GLuint id;
271 void *ptr;
272 size_t size;
273 };
274
275 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
276 {
277 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
278 }
279
280 static void UNUSED_ATTR debug_bbox (const char *cap, fz_irect r)
281 {
282 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
283 }
284
285 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
286 {
287 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
288 m.a, m.b, m.c, m.d, m.e, m.f);
289 }
290
291 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
292
293 static void lock (const char *cap)
294 {
295 int ret = pthread_mutex_lock (&mutex);
296 if (ret) {
297 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
298 }
299 }
300
301 static void unlock (const char *cap)
302 {
303 int ret = pthread_mutex_unlock (&mutex);
304 if (ret) {
305 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
306 }
307 }
308
309 static int trylock (const char *cap)
310 {
311 int ret = pthread_mutex_trylock (&mutex);
312 if (ret && ret != EBUSY) {
313 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
314 }
315 return ret == EBUSY;
316 }
317
318 static void *parse_pointer (const char *cap, const char *s)
319 {
320 int ret;
321 void *ptr;
322
323 ret = sscanf (s, "%" SCN_ptr, SCN_ptr_cast (&ptr));
324 if (ret != 1) {
325 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
326 }
327 return ptr;
328 }
329
330 static double now (void)
331 {
332 struct timeval tv;
333
334 if (gettimeofday (&tv, NULL)) {
335 err (1, "gettimeofday");
336 }
337 return tv.tv_sec + tv.tv_usec*1e-6;
338 }
339
340 static int hasdata (void)
341 {
342 int ret, avail;
343 ret = ioctl (state.csock, FIONREAD, &avail);
344 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
345 return avail > 0;
346 }
347
348 CAMLprim value ml_hasdata (value fd_v)
349 {
350 CAMLparam1 (fd_v);
351 int ret, avail;
352
353 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
354 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
355 CAMLreturn (Val_bool (avail > 0));
356 }
357
358 static void readdata (void *p, int size)
359 {
360 ssize_t n;
361
362 again:
363 n = read (state.csock, p, size);
364 if (n < 0) {
365 if (errno == EINTR) goto again;
366 err (1, "read (req %d, ret %zd)", size, n);
367 }
368 if (n - size) {
369 if (!n) errx (1, "EOF while reading");
370 errx (1, "read (req %d, ret %zd)", size, n);
371 }
372 }
373
374 static void writedata (char *p, int size)
375 {
376 ssize_t n;
377
378 p[0] = (size >> 24) & 0xff;
379 p[1] = (size >> 16) & 0xff;
380 p[2] = (size >> 8) & 0xff;
381 p[3] = (size >> 0) & 0xff;
382
383 n = write (state.csock, p, size + 4);
384 if (n - size - 4) {
385 if (!n) errx (1, "EOF while writing data");
386 err (1, "write (req %d, ret %zd)", size + 4, n);
387 }
388 }
389
390 static int readlen (void)
391 {
392 unsigned char p[4];
393
394 readdata (p, 4);
395 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
396 }
397
398 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
399 {
400 int size = 200, len;
401 va_list ap;
402 char *buf;
403
404 buf = malloc (size);
405 for (;;) {
406 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
407
408 va_start (ap, fmt);
409 len = vsnprintf (buf + 4, size - 4, fmt, ap);
410 va_end (ap);
411
412 if (len > -1) {
413 if (len < size - 4) {
414 writedata (buf, len);
415 break;
416 }
417 else size = len + 5;
418 }
419 else {
420 err (1, "vsnprintf for `%s' failed", fmt);
421 }
422 buf = realloc (buf, size);
423 }
424 free (buf);
425 }
426
427 static void closepdf (void)
428 {
429 #ifdef CACHE_PAGEREFS
430 if (state.pdflut.objs) {
431 int i;
432
433 for (i = 0; i < state.pdflut.count; ++i) {
434 pdf_drop_obj (state.pdflut.objs[i]);
435 }
436 free (state.pdflut.objs);
437 state.pdflut.objs = NULL;
438 state.pdflut.idx = 0;
439 }
440 #endif
441
442 if (state.u.pdf) {
443 pdf_close_document (state.u.pdf);
444 state.u.pdf = NULL;
445 }
446 }
447
448 static void closexps (void)
449 {
450 if (state.u.xps) {
451 xps_close_document (state.u.xps);
452 state.u.xps = NULL;
453 }
454 }
455
456 static void closecbz (void)
457 {
458 if (state.u.cbz) {
459 cbz_close_document (state.u.cbz);
460 state.u.cbz = NULL;
461 }
462 }
463
464 static void closeimg (void)
465 {
466 if (state.u.img) {
467 image_close_document (state.u.img);
468 state.u.img = NULL;
469 }
470 }
471
472 static void freepdfpage (void *ptr)
473 {
474 pdf_free_page (state.u.pdf, ptr);
475 }
476
477 static void freeemptyxxxpage (void *ptr)
478 {
479 (void) ptr;
480 }
481
482 static void freexpspage (void *ptr)
483 {
484 xps_free_page (state.u.xps, ptr);
485 }
486
487 static void freecbzpage (void *ptr)
488 {
489 cbz_free_page (state.u.cbz, ptr);
490 }
491
492 static void freeimgpage (void *ptr)
493 {
494 image_free_page (state.u.img, ptr);
495 }
496
497 static void openxref (char *filename, char *password)
498 {
499 int i, len;
500
501 for (i = 0; i < state.texcount; ++i) {
502 state.texowners[i].w = -1;
503 state.texowners[i].slice = NULL;
504 }
505
506 if (state.closedoc) state.closedoc ();
507
508 len = strlen (filename);
509
510 state.type = DPDF;
511 {
512 size_t j;
513 struct {
514 char *ext;
515 int type;
516 } tbl[] = {
517 { "pdf", DPDF },
518 { "xps", DXPS },
519 { "zip", DCBZ },
520 { "cbz", DCBZ },
521 { "jpg", DIMG },
522 { "jpeg", DIMG },
523 { "png", DIMG }
524 };
525
526 for (j = 0; j < sizeof (tbl) / sizeof (*tbl); ++j) {
527 const char *ext = tbl[j].ext;
528 int len2 = strlen (ext);
529
530 if (len2 < len && !strcasecmp (ext, filename + len - len2)) {
531 state.type = tbl[j].type;
532 break;
533 }
534 }
535 }
536
537 if (state.pagedims) {
538 free (state.pagedims);
539 state.pagedims = NULL;
540 }
541 state.pagedimcount = 0;
542
543 fz_set_aa_level (state.ctx, state.aalevel);
544 switch (state.type) {
545 case DPDF:
546 state.u.pdf = pdf_open_document (state.ctx, filename);
547 if (pdf_needs_password (state.u.pdf)) {
548 int okay = pdf_authenticate_password (state.u.pdf, password);
549 if (!okay) {
550 errx (1, "invalid password");
551 }
552 }
553 state.pagecount = pdf_count_pages (state.u.pdf);
554 state.closedoc = closepdf;
555 state.freepage = freepdfpage;
556 break;
557
558 case DXPS:
559 state.u.xps = xps_open_document (state.ctx, filename);
560 state.pagecount = xps_count_pages (state.u.xps);
561 state.closedoc = closexps;
562 state.freepage = freexpspage;
563 break;
564
565 case DCBZ:
566 state.u.cbz = cbz_open_document (state.ctx, filename);
567 state.pagecount = cbz_count_pages (state.u.cbz);
568 state.closedoc = closecbz;
569 state.freepage = freecbzpage;
570 break;
571
572 case DIMG:
573 state.u.img = image_open_document (state.ctx, filename);
574 state.pagecount = 1;
575 state.closedoc = closeimg;
576 state.freepage = freeimgpage;
577 break;
578 }
579 }
580
581 static void pdfinfo (void)
582 {
583 if (state.type == DPDF) {
584 pdf_obj *infoobj;
585
586 printd ("info PDF version\t%d.%d",
587 state.u.pdf->version / 10, state.u.pdf->version % 10);
588
589 infoobj = pdf_dict_gets (pdf_trailer (state.u.pdf), "Info");
590 if (infoobj) {
591 unsigned int i;
592 char *s;
593 char *items[] = { "Title", "Author", "Creator",
594 "Producer", "CreationDate" };
595
596 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
597 pdf_obj *obj = pdf_dict_gets (infoobj, items[i]);
598 s = pdf_to_utf8 (state.u.pdf, obj);
599 if (*s) printd ("info %s\t%s", items[i], s);
600 fz_free (state.ctx, s);
601 }
602 }
603 printd ("infoend");
604 }
605 }
606
607 static void unlinktile (struct tile *tile)
608 {
609 int i;
610
611 for (i = 0; i < tile->slicecount; ++i) {
612 struct slice *s = &tile->slices[i];
613
614 if (s->texindex != -1) {
615 if (state.texowners[s->texindex].slice == s) {
616 state.texowners[s->texindex].slice = NULL;
617 }
618 }
619 }
620 }
621
622 static void freepage (struct page *page)
623 {
624 if (page->text) {
625 fz_free_text_page (state.ctx, page->text);
626 }
627 if (page->sheet) {
628 fz_free_text_sheet (state.ctx, page->sheet);
629 }
630 if (page->slinks) {
631 free (page->slinks);
632 }
633 fz_drop_display_list (state.ctx, page->dlist);
634 page->freepage (page->u.ptr);
635 free (page);
636 }
637
638 static void freetile (struct tile *tile)
639 {
640 unlinktile (tile);
641 if (!tile->pbo) {
642 #ifndef PIGGYBACK
643 fz_drop_pixmap (state.ctx, tile->pixmap);
644 #else
645 if (state.pig) {
646 fz_drop_pixmap (state.ctx, state.pig);
647 }
648 state.pig = tile->pixmap;
649 #endif
650 }
651 else {
652 free (tile->pbo);
653 fz_drop_pixmap (state.ctx, tile->pixmap);
654 }
655 free (tile);
656 }
657
658 #ifdef __ALTIVEC__
659 #include <stdint.h>
660 #include <altivec.h>
661
662 static int cacheline32bytes;
663
664 static void __attribute__ ((constructor)) clcheck (void)
665 {
666 char **envp = environ;
667 unsigned long *auxv;
668
669 while (*envp++);
670
671 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
672 if (*auxv == 19) {
673 cacheline32bytes = auxv[1] == 32;
674 return;
675 }
676 }
677 }
678
679 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
680 {
681 size_t size = pixmap->w * pixmap->h * pixmap->n;
682 if (cacheline32bytes && size > 32) {
683 intptr_t a1, a2, diff;
684 size_t sizea, i;
685 vector unsigned char v = vec_splat_u8 (-1);
686 vector unsigned char *p;
687
688 a1 = a2 = (intptr_t) pixmap->samples;
689 a2 = (a1 + 31) & ~31;
690 diff = a2 - a1;
691 sizea = size - diff;
692 p = (void *) a2;
693
694 while (a1 != a2) *(char *) a1++ = 0xff;
695 for (i = 0; i < (sizea & ~31); i += 32) {
696 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
697 vec_st (v, i, p);
698 vec_st (v, i + 16, p);
699 }
700 while (i < sizea) *((char *) a1 + i++) = 0xff;
701 }
702 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
703 }
704 #else
705 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
706 #endif
707
708 static void trimctm (pdf_page *page, int pindex)
709 {
710 fz_matrix ctm;
711 struct pagedim *pdim = &state.pagedims[pindex];
712
713 if (!pdim->tctmready) {
714 if (state.trimmargins) {
715 fz_rect realbox;
716 fz_matrix rm, sm, tm, im, ctm1;
717
718 fz_rotate (&rm, -pdim->rotate);
719 fz_scale (&sm, 1, -1);
720 fz_concat (&ctm, &rm, &sm);
721 realbox = pdim->mediabox;
722 fz_transform_rect (&realbox, &ctm);
723 fz_translate (&tm, -realbox.x0, -realbox.y0);
724 fz_concat (&ctm1, &ctm, &tm);
725 fz_invert_matrix (&im, &page->ctm);
726 fz_concat (&ctm, &im, &ctm1);
727 }
728 else {
729 ctm = fz_identity;
730 }
731 pdim->tctm = ctm;
732 pdim->tctmready = 1;
733 }
734 }
735
736 static fz_matrix pagectm (struct page *page)
737 {
738 fz_matrix ctm, tm;
739
740 if (page->type == DPDF) {
741 trimctm (page->u.pdfpage, page->pdimno);
742 fz_concat (&ctm,
743 &state.pagedims[page->pdimno].tctm,
744 &state.pagedims[page->pdimno].ctm);
745 }
746 else {
747 struct pagedim *pdim = &state.pagedims[page->pdimno];
748
749 fz_translate (&tm, -pdim->mediabox.x0, -pdim->mediabox.y0);
750 fz_concat (&ctm, &tm, &state.pagedims[page->pdimno].ctm);
751 }
752 return ctm;
753 }
754
755 static void *loadpage (int pageno, int pindex)
756 {
757 fz_device *dev;
758 struct page *page;
759
760 page = calloc (sizeof (struct page), 1);
761 if (!page) {
762 err (1, "calloc page %d", pageno);
763 }
764
765 page->dlist = fz_new_display_list (state.ctx);
766 dev = fz_new_list_device (state.ctx, page->dlist);
767 fz_try (state.ctx) {
768 switch (state.type) {
769 case DPDF:
770 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
771 pdf_run_page (state.u.pdf, page->u.pdfpage, dev,
772 &fz_identity, NULL);
773 page->freepage = freepdfpage;
774 break;
775
776 case DXPS:
777 page->u.xpspage = xps_load_page (state.u.xps, pageno);
778 xps_run_page (state.u.xps, page->u.xpspage, dev,
779 &fz_identity, NULL);
780 page->freepage = freexpspage;
781 break;
782
783 case DCBZ:
784 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
785 cbz_run_page (state.u.cbz, page->u.cbzpage, dev,
786 &fz_identity, NULL);
787 page->freepage = freecbzpage;
788 break;
789
790 case DIMG:
791 page->u.imgpage = image_load_page (state.u.img, pageno);
792 image_run_page (state.u.img, page->u.imgpage, dev,
793 &fz_identity, NULL);
794 page->freepage = freeimgpage;
795 break;
796 }
797 }
798 fz_catch (state.ctx) {
799 page->u.ptr = NULL;
800 page->freepage = freeemptyxxxpage;
801 }
802 fz_free_device (dev);
803
804 page->pdimno = pindex;
805 page->pageno = pageno;
806 page->sgen = state.gen;
807 page->tgen = state.gen;
808 page->type = state.type;
809
810 return page;
811 }
812
813 static struct tile *alloctile (int h)
814 {
815 int i;
816 int slicecount;
817 size_t tilesize;
818 struct tile *tile;
819
820 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
821 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
822 tile = calloc (tilesize, 1);
823 if (!tile) {
824 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
825 }
826 for (i = 0; i < slicecount; ++i) {
827 int sh = MIN (h, state.sliceheight);
828 tile->slices[i].h = sh;
829 tile->slices[i].texindex = -1;
830 h -= sh;
831 }
832 tile->slicecount = slicecount;
833 tile->sliceheight = state.sliceheight;
834 return tile;
835 }
836
837 #ifdef OBSCURED_OPT
838 struct obs {
839 int cured;
840 fz_irect b;
841 };
842
843 static void obs_fill_image (fz_device *dev, fz_image UNUSED_ATTR *image,
844 const fz_matrix *ctm, float alpha)
845 {
846 struct obs *obs = dev->user;
847
848 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
849 fz_irect b;
850 fz_rect rect = fz_unit_rect;
851
852 fz_transform_rect (&rect, ctm);
853 fz_round_rect (&b, &rect);
854 fz_intersect_irect (&b, &obs->b);
855 obs->cured = b.x0 == obs->b.x0
856 && b.x1 == obs->b.x1
857 && b.y0 == obs->b.y0
858 && b.y1 == obs->b.y1;
859 }
860 }
861
862 static int obscured (struct page *page, fz_irect bbox)
863 {
864 fz_rect rect;
865 fz_matrix ctm;
866 fz_device dev;
867 struct obs obs;
868
869 memset (&dev, 0, sizeof (dev));
870 memset (&obs, 0, sizeof (obs));
871 dev.hints = 0;
872 dev.flags = 0;
873 dev.user = &obs;
874 dev.ctx = state.ctx;
875 dev.fill_image = obs_fill_image;
876 obs.b = bbox;
877 fz_rect_from_irect (&rect, &bbox);
878 ctm = pagectm (page);
879 fz_run_display_list (page->dlist, &dev, &ctm, &rect, NULL);
880 return obs.cured;
881 }
882 #define OBSCURED obscured
883 #else
884 #define OBSCURED(a, b) 0
885 #endif
886
887 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
888 struct pbo *pbo)
889 {
890 fz_rect rect;
891 fz_irect bbox;
892 fz_matrix ctm;
893 fz_device *dev;
894 struct tile *tile;
895 struct pagedim *pdim;
896
897 tile = alloctile (h);
898 pdim = &state.pagedims[page->pdimno];
899
900 bbox = pdim->bounds;
901 bbox.x0 += x;
902 bbox.y0 += y;
903 bbox.x1 = bbox.x0 + w;
904 bbox.y1 = bbox.y0 + h;
905
906 if (state.pig) {
907 if (state.pig->w == w
908 && state.pig->h == h
909 && state.pig->colorspace == state.colorspace) {
910 tile->pixmap = state.pig;
911 tile->pixmap->x = bbox.x0;
912 tile->pixmap->y = bbox.y0;
913 }
914 else {
915 fz_drop_pixmap (state.ctx, state.pig);
916 }
917 state.pig = NULL;
918 }
919 if (!tile->pixmap) {
920 if (pbo) {
921 tile->pixmap =
922 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
923 &bbox, pbo->ptr);
924 tile->pbo = pbo;
925 }
926 else {
927 tile->pixmap =
928 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox);
929 }
930 }
931
932 tile->w = w;
933 tile->h = h;
934 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
935 clearpixmap (tile->pixmap);
936 }
937 dev = fz_new_draw_device (state.ctx, tile->pixmap);
938 ctm = pagectm (page);
939 fz_rect_from_irect (&rect, &bbox);
940 fz_run_display_list (page->dlist, dev, &ctm, &rect, NULL);
941 fz_free_device (dev);
942
943 return tile;
944 }
945
946 #ifdef CACHE_PAGEREFS
947 /* modified mupdf/source/pdf/pdf-page.c:pdf_lookup_page_loc_imp
948 thanks to Robin Watts */
949 static void
950 pdf_collect_pages(pdf_document *doc, pdf_obj *node)
951 {
952 fz_context *ctx = doc->ctx;
953 pdf_obj *kids;
954 int i, len;
955
956 if (state.pdflut.idx == state.pagecount) return;
957
958 kids = pdf_dict_gets (node, "Kids");
959 len = pdf_array_len (kids);
960
961 if (len == 0)
962 fz_throw (ctx, FZ_ERROR_GENERIC, "Malformed pages tree");
963
964 if (pdf_mark_obj (node))
965 fz_throw (ctx, FZ_ERROR_GENERIC, "cycle in page tree");
966 for (i = 0; i < len; i++) {
967 pdf_obj *kid = pdf_array_get (kids, i);
968 char *type = pdf_to_name (pdf_dict_gets (kid, "Type"));
969 if (*type
970 ? !strcmp (type, "Pages")
971 : pdf_dict_gets (kid, "Kids")
972 && !pdf_dict_gets (kid, "MediaBox")) {
973 pdf_collect_pages (doc, kid);
974 }
975 else {
976 if (*type
977 ? strcmp (type, "Page") != 0
978 : !pdf_dict_gets (kid, "MediaBox"))
979 fz_warn (ctx, "non-page object in page tree (%s)", type);
980 state.pdflut.objs[state.pdflut.idx++] = pdf_keep_obj (kid);
981 }
982 }
983 pdf_unmark_obj (node);
984 }
985
986 static void
987 pdf_load_page_objs (pdf_document *doc)
988 {
989 pdf_obj *root = pdf_dict_gets (pdf_trailer (doc), "Root");
990 pdf_obj *node = pdf_dict_gets (root, "Pages");
991
992 if (!node)
993 fz_throw (doc->ctx, FZ_ERROR_GENERIC, "cannot find page tree");
994
995 state.pdflut.idx = 0;
996 pdf_collect_pages (doc, node);
997 }
998 #endif
999
1000 static void initpdims (void)
1001 {
1002 double start, end;
1003 FILE *trimf = NULL;
1004 fz_rect rootmediabox;
1005 int pageno, trim, show;
1006 int trimw = 0, cxcount;
1007
1008 start = now ();
1009
1010 if (state.trimmargins && state.trimcachepath) {
1011 trimf = fopen (state.trimcachepath, "rb");
1012 if (!trimf) {
1013 trimf = fopen (state.trimcachepath, "wb");
1014 trimw = 1;
1015 }
1016 }
1017
1018 if (state.trimmargins || state.type == DPDF || !state.cxack)
1019 cxcount = state.pagecount;
1020 else
1021 cxcount = MIN (state.pagecount, 1);
1022
1023 if (state.type == DPDF) {
1024 pdf_obj *obj;
1025 obj = pdf_dict_getp (pdf_trailer (state.u.pdf),
1026 "Root/Pages/MediaBox");
1027 pdf_to_rect (state.ctx, obj, &rootmediabox);
1028 }
1029
1030 #ifdef CACHE_PAGEREFS
1031 if (state.type == DPDF
1032 && (!state.pdflut.objs || state.pdflut.pdf != state.u.pdf)) {
1033 state.pdflut.objs = calloc (sizeof (*state.pdflut.objs), cxcount);
1034 if (!state.pdflut.objs) {
1035 err (1, "malloc pageobjs %zu %d %zu failed",
1036 sizeof (*state.pdflut.objs), cxcount,
1037 sizeof (*state.pdflut.objs) * cxcount);
1038 }
1039 state.pdflut.count = cxcount;
1040 pdf_load_page_objs (state.u.pdf);
1041 state.pdflut.pdf = state.u.pdf;
1042 }
1043 #endif
1044
1045 for (pageno = 0; pageno < cxcount; ++pageno) {
1046 int rotate = 0;
1047 struct pagedim *p;
1048 fz_rect mediabox;
1049
1050 switch (state.type) {
1051 case DPDF: {
1052 pdf_document *pdf = state.u.pdf;
1053 pdf_obj *pageref, *pageobj;
1054
1055 #ifdef CACHE_PAGEREFS
1056 pageref = state.pdflut.objs[pageno];
1057 #else
1058 pageref = pdf_lookup_page_obj (pdf, pageno);
1059 show = !state.trimmargins && pageno % 20 == 0;
1060 if (show) {
1061 printd ("progress %f Gathering dimensions %d",
1062 (double) (pageno) / state.pagecount,
1063 pageno);
1064 }
1065 #endif
1066 pageobj = pdf_resolve_indirect (pageref);
1067
1068 if (state.trimmargins) {
1069 pdf_obj *obj;
1070 pdf_page *page;
1071
1072 fz_try (state.ctx) {
1073 page = pdf_load_page (pdf, pageno);
1074 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
1075 trim = state.trimanew || !obj;
1076 if (trim) {
1077 fz_rect rect;
1078 fz_matrix ctm;
1079 fz_device *dev;
1080
1081 dev = fz_new_bbox_device (state.ctx, &rect);
1082 dev->hints |= FZ_IGNORE_SHADE;
1083 fz_invert_matrix (&ctm, &page->ctm);
1084 pdf_run_page (pdf, page, dev, &fz_identity, NULL);
1085 fz_free_device (dev);
1086
1087 rect.x0 += state.trimfuzz.x0;
1088 rect.x1 += state.trimfuzz.x1;
1089 rect.y0 += state.trimfuzz.y0;
1090 rect.y1 += state.trimfuzz.y1;
1091 fz_transform_rect (&rect, &ctm);
1092 fz_intersect_rect (&rect, &page->mediabox);
1093
1094 if (fz_is_empty_rect (&rect)) {
1095 mediabox = page->mediabox;
1096 }
1097 else {
1098 mediabox = rect;
1099 }
1100
1101 obj = pdf_new_array (pdf, 4);
1102 pdf_array_push (obj, pdf_new_real (pdf, mediabox.x0));
1103 pdf_array_push (obj, pdf_new_real (pdf, mediabox.y0));
1104 pdf_array_push (obj, pdf_new_real (pdf, mediabox.x1));
1105 pdf_array_push (obj, pdf_new_real (pdf, mediabox.y1));
1106 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
1107 }
1108 else {
1109 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
1110 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
1111 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
1112 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
1113 }
1114
1115 rotate = page->rotate;
1116 pdf_free_page (pdf, page);
1117
1118 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
1119 if (show) {
1120 printd ("progress %f Trimming %d",
1121 (double) (pageno + 1) / state.pagecount,
1122 pageno + 1);
1123 }
1124 }
1125 fz_catch (state.ctx) {
1126 fprintf (stderr, "failed to load page %d\n", pageno+1);
1127 }
1128 }
1129 else {
1130 int empty = 0;
1131 fz_rect cropbox;
1132
1133 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "MediaBox"),
1134 &mediabox);
1135 if (fz_is_empty_rect (&mediabox)) {
1136 mediabox.x0 = 0;
1137 mediabox.y0 = 0;
1138 mediabox.x1 = 612;
1139 mediabox.y1 = 792;
1140 empty = 1;
1141 }
1142
1143 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "CropBox"),
1144 &cropbox);
1145 if (!fz_is_empty_rect (&cropbox)) {
1146 if (empty) {
1147 mediabox = cropbox;
1148 }
1149 else {
1150 fz_intersect_rect (&mediabox, &cropbox);
1151 }
1152 }
1153 else {
1154 if (empty) {
1155 if (fz_is_empty_rect (&rootmediabox)) {
1156 fprintf (stderr,
1157 "cannot find page size for page %d\n",
1158 pageno+1);
1159 }
1160 else {
1161 mediabox = rootmediabox;
1162 }
1163 }
1164 }
1165 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
1166 }
1167 break;
1168 }
1169
1170 case DXPS:
1171 {
1172 xps_page *page;
1173
1174 fz_try (state.ctx) {
1175 page = xps_load_page (state.u.xps, pageno);
1176 xps_bound_page (state.u.xps, page, &mediabox);
1177 rotate = 0;
1178 if (state.trimmargins) {
1179 fz_rect rect;
1180 fz_device *dev;
1181
1182 dev = fz_new_bbox_device (state.ctx, &rect);
1183 dev->hints |= FZ_IGNORE_SHADE;
1184 xps_run_page (state.u.xps, page, dev,
1185 &fz_identity, NULL);
1186 fz_free_device (dev);
1187
1188 rect.x0 += state.trimfuzz.x0;
1189 rect.x1 += state.trimfuzz.x1;
1190 rect.y0 += state.trimfuzz.y0;
1191 rect.y1 += state.trimfuzz.y1;
1192 fz_intersect_rect (&rect, &mediabox);
1193
1194 if (!fz_is_empty_rect (&rect)) {
1195 mediabox = rect;
1196 }
1197 }
1198 xps_free_page (state.u.xps, page);
1199 if (!state.cxack) {
1200 printd ("progress %f loading %d",
1201 (double) (pageno + 1) / state.pagecount,
1202 pageno + 1);
1203 }
1204 }
1205 fz_catch (state.ctx) {
1206 }
1207 }
1208 break;
1209
1210 case DCBZ:
1211 {
1212 rotate = 0;
1213 mediabox.x0 = 0;
1214 mediabox.y0 = 0;
1215 mediabox.x1 = 900;
1216 mediabox.y1 = 900;
1217 if (state.trimmargins && trimw) {
1218 cbz_page *page;
1219
1220 fz_try (state.ctx) {
1221 page = cbz_load_page (state.u.cbz, pageno);
1222 cbz_bound_page (state.u.cbz, page, &mediabox);
1223 cbz_free_page (state.u.cbz, page);
1224 printd ("progress %f Trimming %d",
1225 (double) (pageno + 1) / state.pagecount,
1226 pageno + 1);
1227 }
1228 fz_catch (state.ctx) {
1229 fprintf (stderr, "failed to load page %d\n", pageno+1);
1230 }
1231 if (trimf) {
1232 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1233 if (n - 1) {
1234 err (1, "fwrite trim mediabox");
1235 }
1236 }
1237 }
1238 else {
1239 if (trimf) {
1240 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1241 if (n - 1) {
1242 err (1, "fread trim mediabox");
1243 }
1244 }
1245 else {
1246 if (state.cxack) {
1247 cbz_page *page;
1248 fz_try (state.ctx) {
1249 page = cbz_load_page (state.u.cbz, pageno);
1250 cbz_bound_page (state.u.cbz, page, &mediabox);
1251 cbz_free_page (state.u.cbz, page);
1252 }
1253 fz_catch (state.ctx) {
1254 fprintf (stderr, "failed to load cbz page\n");
1255 }
1256 }
1257 }
1258 }
1259 }
1260 break;
1261
1262 case DIMG:
1263 {
1264 image_page *page;
1265
1266 rotate = 0;
1267 mediabox.x0 = 0;
1268 mediabox.y0 = 0;
1269 mediabox.x1 = 900;
1270 mediabox.y1 = 900;
1271
1272 fz_try (state.ctx) {
1273 page = image_load_page (state.u.img, pageno);
1274 image_bound_page (state.u.img, page, &mediabox);
1275 image_free_page (state.u.img, page);
1276 }
1277 fz_catch (state.ctx) {
1278 fprintf (stderr, "failed to load page %d\n", pageno+1);
1279 }
1280 }
1281 break;
1282
1283 default:
1284 ARSERT (0 && state.type);
1285 }
1286
1287 if (state.pagedimcount == 0
1288 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1289 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1290 size_t size;
1291
1292 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1293 state.pagedims = realloc (state.pagedims, size);
1294 if (!state.pagedims) {
1295 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1296 size, state.pagedimcount + 1);
1297 }
1298
1299 p = &state.pagedims[state.pagedimcount++];
1300 p->rotate = rotate;
1301 p->mediabox = mediabox;
1302 p->pageno = pageno;
1303 }
1304 }
1305 end = now ();
1306 if (state.trimmargins) {
1307 printd ("progress 1 Trimmed %d pages in %f seconds",
1308 state.pagecount, end - start);
1309 }
1310 else {
1311 if (state.type == DPDF)
1312 printd ("progress 1 Processed %d pages in %f seconds",
1313 state.pagecount, end - start);
1314 else
1315 printd ("vmsg Processed %d pages in %f seconds",
1316 state.pagecount, end - start);
1317 }
1318 state.trimanew = 0;
1319 if (trimf) {
1320 if (fclose (trimf)) {
1321 err (1, "fclose");
1322 }
1323 }
1324 }
1325
1326 static void layout (void)
1327 {
1328 int pindex;
1329 fz_rect box;
1330 fz_matrix ctm, rm;
1331 struct pagedim *p = p;
1332 double zw, w, maxw = 0.0, zoom = zoom;
1333
1334 if (state.pagedimcount == 0) return;
1335
1336 switch (state.fitmodel) {
1337 case FitProportional:
1338 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1339 double x0, x1;
1340
1341 p = &state.pagedims[pindex];
1342 fz_rotate (&rm, p->rotate + state.rotate);
1343 box = p->mediabox;
1344 fz_transform_rect (&box, &rm);
1345
1346 x0 = MIN (box.x0, box.x1);
1347 x1 = MAX (box.x0, box.x1);
1348
1349 w = x1 - x0;
1350 maxw = MAX (w, maxw);
1351 zoom = state.w / maxw;
1352 }
1353 break;
1354
1355 case FitPage:
1356 maxw = state.w;
1357 break;
1358
1359 case FitWidth:
1360 break;
1361
1362 default:
1363 ARSERT (0 && state.fitmodel);
1364 }
1365
1366 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1367 fz_rect rect;
1368 fz_matrix tm, sm;
1369
1370 p = &state.pagedims[pindex];
1371 fz_rotate (&ctm, state.rotate);
1372 fz_rotate (&rm, p->rotate + state.rotate);
1373 box = p->mediabox;
1374 fz_transform_rect (&box, &rm);
1375 w = box.x1 - box.x0;
1376 switch (state.fitmodel) {
1377 case FitProportional:
1378 p->left = ((maxw - w) * zoom) / 2.0;
1379 break;
1380 case FitPage:
1381 {
1382 double zh, h;
1383 zw = maxw / w;
1384 h = box.y1 - box.y0;
1385 zh = state.h / h;
1386 zoom = MIN (zw, zh);
1387 p->left = (maxw - (w * zoom)) / 2.0;
1388 }
1389 break;
1390 case FitWidth:
1391 p->left = 0;
1392 zoom = state.w / w;
1393 break;
1394 }
1395
1396 fz_scale (&p->zoomctm, zoom, zoom);
1397 fz_concat (&ctm, &p->zoomctm, &ctm);
1398
1399 fz_rotate (&rm, p->rotate);
1400 p->pagebox = p->mediabox;
1401 fz_transform_rect (&p->pagebox, &rm);
1402 p->pagebox.x1 -= p->pagebox.x0;
1403 p->pagebox.y1 -= p->pagebox.y0;
1404 p->pagebox.x0 = 0;
1405 p->pagebox.y0 = 0;
1406 rect = p->pagebox;
1407 fz_transform_rect (&rect, &ctm);
1408 fz_round_rect (&p->bounds, &rect);
1409 p->ctm = ctm;
1410
1411 fz_translate (&tm, 0, -p->mediabox.y1);
1412 fz_scale (&sm, zoom, -zoom);
1413 fz_concat (&ctm, &tm, &sm);
1414 fz_concat (&p->lctm, &ctm, &rm);
1415
1416 p->tctmready = 0;
1417 }
1418
1419 do {
1420 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1421 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1422 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1423 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1424 int boundw = x1 - x0;
1425 int boundh = y1 - y0;
1426
1427 printd ("pdim %d %d %d %d", p->pageno, boundw, boundh, p->left);
1428 } while (p-- != state.pagedims);
1429 }
1430
1431 static
1432 struct anchor { int n; int x; int y; int w; int h; }
1433 desttoanchor (fz_link_dest *dest)
1434 {
1435 int i;
1436 struct anchor a;
1437 struct pagedim *pdim = state.pagedims;
1438
1439 a.n = -1;
1440 a.x = 0;
1441 a.y = 0;
1442 for (i = 0; i < state.pagedimcount; ++i) {
1443 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1444 break;
1445 pdim = &state.pagedims[i];
1446 }
1447 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1448 fz_point p;
1449 if (dest->ld.gotor.flags & fz_link_flag_l_valid)
1450 p.x = dest->ld.gotor.lt.x;
1451 else
1452 p.x = 0.0;
1453 p.y = dest->ld.gotor.lt.y;
1454 fz_transform_point (&p, &pdim->lctm);
1455 a.x = p.x;
1456 a.y = p.y;
1457 }
1458 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1459 double x0, x1, y0, y1;
1460
1461 x0 = MIN (pdim->bounds.x0, pdim->bounds.x1);
1462 x1 = MAX (pdim->bounds.x0, pdim->bounds.x1);
1463 a.w = x1 - x0;
1464 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1465 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1466 a.h = y1 - y0;
1467 a.n = dest->ld.gotor.page;
1468 }
1469 return a;
1470 }
1471
1472 static void recurse_outline (fz_outline *outline, int level)
1473 {
1474 while (outline) {
1475 switch (outline->dest.kind) {
1476 case FZ_LINK_GOTO:
1477 {
1478 struct anchor a = desttoanchor (&outline->dest);
1479
1480 if (a.n >= 0) {
1481 printd ("o %d %d %d %d %s",
1482 level, a.n, a.y, a.h, outline->title);
1483 }
1484 }
1485 break;
1486
1487 case FZ_LINK_URI:
1488 printd ("ou %d %" FMT_s " %s %s", level,
1489 strlen (outline->title), outline->title,
1490 outline->dest.ld.uri.uri);
1491 break;
1492
1493 case FZ_LINK_NONE:
1494 printd ("on %d %s", level, outline->title);
1495 break;
1496
1497 default:
1498 printd ("emsg Unhandled outline kind %d for %s\n",
1499 outline->dest.kind, outline->title);
1500 break;
1501 }
1502 if (outline->down) {
1503 recurse_outline (outline->down, level + 1);
1504 }
1505 outline = outline->next;
1506 }
1507 }
1508
1509 static void process_outline (void)
1510 {
1511 fz_outline *outline;
1512
1513 if (!state.needoutline || !state.pagedimcount) return;
1514
1515 state.needoutline = 0;
1516 switch (state.type) {
1517 case DPDF:
1518 outline = pdf_load_outline (state.u.pdf);
1519 break;
1520 case DXPS:
1521 outline = xps_load_outline (state.u.xps);
1522 break;
1523 default:
1524 outline = NULL;
1525 break;
1526 }
1527 if (outline) {
1528 recurse_outline (outline, 0);
1529 fz_free_outline (state.ctx, outline);
1530 }
1531 }
1532
1533 static char *strofspan (fz_text_span *span)
1534 {
1535 char *p;
1536 char utf8[10];
1537 fz_text_char *ch;
1538 size_t size = 0, cap = 80;
1539
1540 p = malloc (cap + 1);
1541 if (!p) return NULL;
1542
1543 for (ch = span->text; ch < span->text + span->len; ++ch) {
1544 int n = fz_runetochar (utf8, ch->c);
1545 if (size + n > cap) {
1546 cap *= 2;
1547 p = realloc (p, cap + 1);
1548 if (!p) return NULL;
1549 }
1550
1551 memcpy (p + size, utf8, n);
1552 size += n;
1553 }
1554 p[size] = 0;
1555 return p;
1556 }
1557
1558 static int matchspan (regex_t *re, fz_text_page UNUSED_ATTR *page,
1559 fz_text_span *span, fz_matrix UNUSED_ATTR ctm,
1560 int stop, int pageno, double start)
1561 {
1562 int ret;
1563 char *p;
1564 regmatch_t rm;
1565 int a, b, c;
1566 fz_rect sb, eb;
1567 fz_point p1, p2, p3, p4;
1568
1569 p = strofspan (span);
1570 if (!p) return -1;
1571
1572 ret = regexec (re, p, 1, &rm, 0);
1573 if (ret) {
1574 free (p);
1575 if (ret != REG_NOMATCH) {
1576 size_t size;
1577 char errbuf[80];
1578 size = regerror (ret, re, errbuf, sizeof (errbuf));
1579 printd ("msg regexec error `%.*s'",
1580 (int) size, errbuf);
1581 return -1;
1582 }
1583 return 0;
1584 }
1585 else {
1586 int l = span->len;
1587
1588 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1589 c += fz_runelen (span->text[a].c);
1590 }
1591 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1592 c += fz_runelen (span->text[b].c);
1593 }
1594
1595 if (fz_runelen (span->text[b].c) > 1) {
1596 b = MAX (0, b-1);
1597 }
1598
1599 fz_text_char_bbox (&sb, span, a);
1600 fz_text_char_bbox (&eb, span, b);
1601
1602 p1.x = sb.x0;
1603 p1.y = sb.y0;
1604 p2.x = eb.x1;
1605 p2.y = sb.y0;
1606 p3.x = eb.x1;
1607 p3.y = eb.y1;
1608 p4.x = sb.x0;
1609 p4.y = eb.y1;
1610
1611 if (!stop) {
1612 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1613 pageno, 1,
1614 p1.x, p1.y,
1615 p2.x, p2.y,
1616 p3.x, p3.y,
1617 p4.x, p4.y);
1618
1619 printd ("progress 1 found at %d `%.*s' in %f sec",
1620 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1621 now () - start);
1622 }
1623 else {
1624 printd ("match %d %d %f %f %f %f %f %f %f %f",
1625 pageno, 2,
1626 p1.x, p1.y,
1627 p2.x, p2.y,
1628 p3.x, p3.y,
1629 p4.x, p4.y);
1630 }
1631 free (p);
1632 return 1;
1633 }
1634 }
1635
1636 static int compareblocks (const void *l, const void *r)
1637 {
1638 fz_text_block const *ls = l;
1639 fz_text_block const* rs = r;
1640 return ls->bbox.y0 - rs->bbox.y0;
1641 }
1642
1643 /* wishful thinking function */
1644 static void search (regex_t *re, int pageno, int y, int forward)
1645 {
1646 int i, j;
1647 fz_matrix ctm;
1648 fz_device *tdev;
1649 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1650 fz_text_page *text;
1651 fz_text_sheet *sheet;
1652 struct pagedim *pdim, *pdimprev;
1653 int stop = 0, niters = 0;
1654 double start, end;
1655
1656 if (!(state.type == DPDF || state.type == DXPS))
1657 return;
1658
1659 start = now ();
1660 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1661 if (niters++ == 5) {
1662 niters = 0;
1663 if (hasdata ()) {
1664 printd ("progress 1 attention requested aborting search at %d",
1665 pageno);
1666 stop = 1;
1667 }
1668 else {
1669 printd ("progress %f searching in page %d",
1670 (double) (pageno + 1) / state.pagecount,
1671 pageno);
1672 }
1673 }
1674 pdimprev = NULL;
1675 for (i = 0; i < state.pagedimcount; ++i) {
1676 pdim = &state.pagedims[i];
1677 if (pdim->pageno == pageno) {
1678 goto found;
1679 }
1680 if (pdim->pageno > pageno) {
1681 pdim = pdimprev;
1682 goto found;
1683 }
1684 pdimprev = pdim;
1685 }
1686 pdim = pdimprev;
1687 found:
1688
1689 sheet = fz_new_text_sheet (state.ctx);
1690 text = fz_new_text_page (state.ctx);
1691 tdev = fz_new_text_device (state.ctx, sheet, text);
1692
1693 switch (state.type) {
1694 case DPDF:
1695 u.ptr = NULL;
1696 fz_try (state.ctx) {
1697 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1698 trimctm (u.pdfpage, pdim - state.pagedims);
1699 fz_concat (&ctm, &pdim->tctm, &pdim->zoomctm);
1700 fz_begin_page (tdev, &fz_infinite_rect, &ctm);
1701 pdf_run_page (state.u.pdf, u.pdfpage, tdev, &ctm, NULL);
1702 fz_end_page (tdev);
1703 }
1704 fz_catch (state.ctx) {
1705 fz_free_device (tdev);
1706 u.ptr = NULL;
1707 goto nextiter;
1708 }
1709 break;
1710
1711 case DXPS:
1712 u.xpspage = xps_load_page (state.u.xps, pageno);
1713 xps_run_page (state.u.xps, u.xpspage, tdev, &pdim->ctm, NULL);
1714 break;
1715
1716 default:
1717 ARSERT (0 && state.type);
1718 }
1719
1720 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1721 fz_free_device (tdev);
1722
1723 for (j = 0; j < text->len; ++j) {
1724 int k;
1725 fz_page_block *pb;
1726 fz_text_block *block;
1727
1728 pb = &text->blocks[forward ? j : text->len - 1 - j];
1729 if (pb->type != FZ_PAGE_BLOCK_TEXT) continue;
1730 block = pb->u.text;
1731
1732 for (k = 0; k < block->len; ++k) {
1733 fz_text_line *line;
1734 fz_text_span *span;
1735
1736 if (forward) {
1737 line = &block->lines[k];
1738 if (line->bbox.y0 < y + 1) continue;
1739 }
1740 else {
1741 line = &block->lines[block->len - 1 - k];
1742 if (line->bbox.y0 > y - 1) continue;
1743 }
1744
1745 for (span = line->first_span; span; span = span->next) {
1746 switch (matchspan (re, text, span, ctm,
1747 stop, pageno, start)) {
1748 case 0: break;
1749 case 1: stop = 1; break;
1750 case -1: stop = 1; goto endloop;
1751 }
1752 }
1753 }
1754 }
1755 nextiter:
1756 if (forward) {
1757 pageno += 1;
1758 y = 0;
1759 }
1760 else {
1761 pageno -= 1;
1762 y = INT_MAX;
1763 }
1764 endloop:
1765 fz_free_text_page (state.ctx, text);
1766 fz_free_text_sheet (state.ctx, sheet);
1767 if (u.ptr) {
1768 state.freepage (u.ptr);
1769 }
1770 }
1771 end = now ();
1772 if (!stop) {
1773 printd ("progress 1 no matches %f sec", end - start);
1774 }
1775 printd ("clearrects");
1776 }
1777
1778 static void set_tex_params (int colorspace)
1779 {
1780 union {
1781 unsigned char b;
1782 unsigned int s;
1783 } endianness = {1};
1784
1785 switch (colorspace) {
1786 case 0:
1787 state.texiform = GL_RGBA8;
1788 state.texform = GL_RGBA;
1789 state.texty = GL_UNSIGNED_BYTE;
1790 state.colorspace = fz_device_rgb (state.ctx);
1791 break;
1792 case 1:
1793 state.texiform = GL_RGBA8;
1794 state.texform = GL_BGRA;
1795 state.texty = endianness.s > 1
1796 ? GL_UNSIGNED_INT_8_8_8_8
1797 : GL_UNSIGNED_INT_8_8_8_8_REV;
1798 state.colorspace = fz_device_bgr (state.ctx);
1799 break;
1800 case 2:
1801 state.texiform = GL_LUMINANCE_ALPHA;
1802 state.texform = GL_LUMINANCE_ALPHA;
1803 state.texty = GL_UNSIGNED_BYTE;
1804 state.colorspace = fz_device_gray (state.ctx);
1805 break;
1806 default:
1807 errx (1, "invalid colorspce %d", colorspace);
1808 }
1809 }
1810
1811 static void realloctexts (int texcount)
1812 {
1813 size_t size;
1814
1815 if (texcount == state.texcount) return;
1816
1817 if (texcount < state.texcount) {
1818 glDeleteTextures (state.texcount - texcount,
1819 state.texids + texcount);
1820 }
1821
1822 size = texcount * sizeof (*state.texids);
1823 state.texids = realloc (state.texids, size);
1824 if (!state.texids) {
1825 err (1, "realloc texids %" FMT_s, size);
1826 }
1827
1828 size = texcount * sizeof (*state.texowners);
1829 state.texowners = realloc (state.texowners, size);
1830 if (!state.texowners) {
1831 err (1, "realloc texowners %" FMT_s, size);
1832 }
1833 if (texcount > state.texcount) {
1834 int i;
1835
1836 glGenTextures (texcount - state.texcount,
1837 state.texids + state.texcount);
1838 for (i = state.texcount; i < texcount; ++i) {
1839 state.texowners[i].w = -1;
1840 state.texowners[i].slice = NULL;
1841 }
1842 }
1843 state.texcount = texcount;
1844 state.texindex = 0;
1845 }
1846
1847 static char *mbtoutf8 (char *s)
1848 {
1849 char *p, *r;
1850 wchar_t *tmp;
1851 size_t i, ret, len;
1852
1853 len = mbstowcs (NULL, s, strlen (s));
1854 if (len == 0) {
1855 return s;
1856 }
1857 else {
1858 if (len == (size_t) -1) {
1859 return s;
1860 }
1861 }
1862
1863 tmp = malloc (len * sizeof (wchar_t));
1864 if (!tmp) {
1865 return s;
1866 }
1867
1868 ret = mbstowcs (tmp, s, len);
1869 if (ret == (size_t) -1) {
1870 free (tmp);
1871 return s;
1872 }
1873
1874 len = 0;
1875 for (i = 0; i < ret; ++i) {
1876 len += fz_runelen (tmp[i]);
1877 }
1878
1879 p = r = malloc (len + 1);
1880 if (!r) {
1881 free (tmp);
1882 return s;
1883 }
1884
1885 for (i = 0; i < ret; ++i) {
1886 p += fz_runetochar (p, tmp[i]);
1887 }
1888 *p = 0;
1889 free (tmp);
1890 return r;
1891 }
1892
1893 CAMLprim value ml_mbtoutf8 (value s_v)
1894 {
1895 CAMLparam1 (s_v);
1896 CAMLlocal1 (ret_v);
1897 char *s, *r;
1898
1899 s = String_val (s_v);
1900 r = mbtoutf8 (s);
1901 if (r == s) {
1902 ret_v = s_v;
1903 }
1904 else {
1905 ret_v = caml_copy_string (r);
1906 free (r);
1907 }
1908 CAMLreturn (ret_v);
1909 }
1910
1911 static void * mainloop (void UNUSED_ATTR *unused)
1912 {
1913 char *p = NULL;
1914 int len, ret, oldlen = 0;
1915
1916 for (;;) {
1917 len = readlen ();
1918 if (len == 0) {
1919 errx (1, "readlen returned 0");
1920 }
1921
1922 if (oldlen < len + 1) {
1923 p = realloc (p, len + 1);
1924 if (!p) {
1925 err (1, "realloc %d failed", len + 1);
1926 }
1927 oldlen = len + 1;
1928 }
1929 readdata (p, len);
1930 p[len] = 0;
1931
1932 if (!strncmp ("open", p, 4)) {
1933 int wthack, off, ok = 0;
1934 char *password;
1935 char *filename;
1936 char *utf8filename;
1937 size_t filenamelen;
1938
1939 ret = sscanf (p + 5, " %d %d %n", &wthack, &state.cxack, &off);
1940 if (ret != 2) {
1941 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1942 }
1943
1944 filename = p + 5 + off;
1945 filenamelen = strlen (filename);
1946 password = filename + filenamelen + 1;
1947
1948 lock ("open");
1949 fz_try (state.ctx) {
1950 openxref (filename, password);
1951 ok = 1;
1952 }
1953 fz_catch (state.ctx) {
1954 utf8filename = mbtoutf8 (filename);
1955 printd ("msg Could not open %s", utf8filename);
1956 }
1957 if (ok) {
1958 pdfinfo ();
1959 initpdims ();
1960 }
1961 unlock ("open");
1962
1963 if (ok) {
1964 if (!wthack) {
1965 utf8filename = mbtoutf8 (filename);
1966 printd ("msg Opened %s (press h/F1 to get help)",
1967 utf8filename);
1968 if (utf8filename != filename) {
1969 free (utf8filename);
1970 }
1971 }
1972 state.needoutline = 1;
1973 }
1974 }
1975 else if (!strncmp ("cs", p, 2)) {
1976 int i, colorspace;
1977
1978 ret = sscanf (p + 2, " %d", &colorspace);
1979 if (ret != 1) {
1980 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1981 }
1982 lock ("cs");
1983 set_tex_params (colorspace);
1984 for (i = 0; i < state.texcount; ++i) {
1985 state.texowners[i].w = -1;
1986 state.texowners[i].slice = NULL;
1987 }
1988 unlock ("cs");
1989 }
1990 else if (!strncmp ("freepage", p, 8)) {
1991 void *ptr;
1992
1993 ret = sscanf (p + 8, " %" SCN_ptr, SCN_ptr_cast (&ptr));
1994 if (ret != 1) {
1995 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1996 }
1997 freepage (ptr);
1998 }
1999 else if (!strncmp ("freetile", p, 8)) {
2000 void *ptr;
2001
2002 ret = sscanf (p + 8, " %" SCN_ptr, SCN_ptr_cast (&ptr));
2003 if (ret != 1) {
2004 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
2005 }
2006 freetile (ptr);
2007 }
2008 else if (!strncmp ("search", p, 6)) {
2009 int icase, pageno, y, len2, forward;
2010 char *pattern;
2011 regex_t re;
2012
2013 ret = sscanf (p + 6, " %d %d %d %d,%n",
2014 &icase, &pageno, &y, &forward, &len2);
2015 if (ret != 4) {
2016 errx (1, "malformed search `%s' ret=%d", p, ret);
2017 }
2018
2019 pattern = p + 6 + len2;
2020 ret = regcomp (&re, pattern,
2021 REG_EXTENDED | (icase ? REG_ICASE : 0));
2022 if (ret) {
2023 char errbuf[80];
2024 size_t size;
2025
2026 size = regerror (ret, &re, errbuf, sizeof (errbuf));
2027 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
2028 }
2029 else {
2030 search (&re, pageno, y, forward);
2031 regfree (&re);
2032 }
2033 }
2034 else if (!strncmp ("geometry", p, 8)) {
2035 int w, h, fitmodel;
2036
2037 printd ("clear");
2038 ret = sscanf (p + 8, " %d %d %d", &w, &h, &fitmodel);
2039 if (ret != 3) {
2040 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
2041 }
2042
2043 lock ("geometry");
2044 state.h = h;
2045 if (w != state.w) {
2046 int i;
2047 state.w = w;
2048 for (i = 0; i < state.texcount; ++i) {
2049 state.texowners[i].slice = NULL;
2050 }
2051 }
2052 state.fitmodel = fitmodel;
2053 layout ();
2054 process_outline ();
2055
2056 state.gen++;
2057 unlock ("geometry");
2058 printd ("continue %d", state.pagecount);
2059 }
2060 else if (!strncmp ("reqlayout", p, 9)) {
2061 char *nameddest;
2062 int rotate, off, h;
2063 unsigned int fitmodel;
2064
2065 printd ("clear");
2066 ret = sscanf (p + 9, " %d %u %d %n",
2067 &rotate, &fitmodel, &h, &off);
2068 if (ret != 3) {
2069 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
2070 }
2071 lock ("reqlayout");
2072 if (state.rotate != rotate || state.fitmodel != fitmodel) {
2073 state.gen += 1;
2074 }
2075 state.rotate = rotate;
2076 state.fitmodel = fitmodel;
2077 state.h = h;
2078 layout ();
2079 process_outline ();
2080
2081 nameddest = p + 9 + off;
2082 if (state.type == DPDF && nameddest && *nameddest) {
2083 struct anchor a;
2084 fz_link_dest dest;
2085 pdf_obj *needle, *obj;
2086
2087 needle = pdf_new_string (state.u.pdf, nameddest,
2088 strlen (nameddest));
2089 obj = pdf_lookup_dest (state.u.pdf, needle);
2090 if (obj) {
2091 dest = pdf_parse_link_dest (state.u.pdf, FZ_LINK_GOTO, obj);
2092
2093 a = desttoanchor (&dest);
2094 if (a.n >= 0) {
2095 printd ("a %d %d %d", a.n, a.x, a.y);
2096 }
2097 else {
2098 printd ("emsg failed to parse destination `%s'\n",
2099 nameddest);
2100 }
2101 }
2102 else {
2103 printd ("emsg destination `%s' not found\n",
2104 nameddest);
2105 }
2106 pdf_drop_obj (needle);
2107 }
2108
2109 state.gen++;
2110 unlock ("reqlayout");
2111 printd ("continue %d", state.pagecount);
2112 }
2113 else if (!strncmp ("page", p, 4)) {
2114 double a, b;
2115 struct page *page;
2116 int pageno, pindex;
2117
2118 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
2119 if (ret != 2) {
2120 errx (1, "bad page line `%.*s' ret=%d", len, p, ret);
2121 }
2122
2123 lock ("page");
2124 a = now ();
2125 page = loadpage (pageno, pindex);
2126 b = now ();
2127 unlock ("page");
2128
2129 printd ("page %" FMT_ptr " %f", FMT_ptr_cast (page), b - a);
2130 }
2131 else if (!strncmp ("tile", p, 4)) {
2132 int x, y, w, h;
2133 struct page *page;
2134 struct tile *tile;
2135 double a, b;
2136 void *data;
2137
2138 ret = sscanf (p + 4, " %" SCN_ptr " %d %d %d %d %" SCN_ptr,
2139 SCN_ptr_cast (&page), &x, &y, &w, &h,
2140 SCN_ptr_cast (&data));
2141 if (ret != 6) {
2142 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
2143 }
2144
2145 lock ("tile");
2146 a = now ();
2147 tile = rendertile (page, x, y, w, h, data);
2148 b = now ();
2149 unlock ("tile");
2150
2151 printd ("tile %d %d %" FMT_ptr " %u %f",
2152 x, y,
2153 FMT_ptr_cast (tile),
2154 tile->w * tile->h * tile->pixmap->n,
2155 b - a);
2156 }
2157 else if (!strncmp ("trimset", p, 7)) {
2158 fz_irect fuzz;
2159 int trimmargins;
2160
2161 ret = sscanf (p + 7, " %d %d %d %d %d",
2162 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
2163 if (ret != 5) {
2164 errx (1, "malformed trimset `%.*s' ret=%d", len, p, ret);
2165 }
2166 lock ("trimset");
2167 state.trimmargins = trimmargins;
2168 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
2169 state.trimanew = 1;
2170 state.trimfuzz = fuzz;
2171 }
2172 unlock ("trimset");
2173 }
2174 else if (!strncmp ("settrim", p, 7)) {
2175 fz_irect fuzz;
2176 int trimmargins;
2177
2178 ret = sscanf (p + 7, " %d %d %d %d %d",
2179 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
2180 if (ret != 5) {
2181 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
2182 }
2183 printd ("clear");
2184 lock ("settrim");
2185 state.trimmargins = trimmargins;
2186 state.needoutline = 1;
2187 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
2188 state.trimanew = 1;
2189 state.trimfuzz = fuzz;
2190 }
2191 state.pagedimcount = 0;
2192 free (state.pagedims);
2193 state.pagedims = NULL;
2194 initpdims ();
2195 layout ();
2196 process_outline ();
2197 unlock ("settrim");
2198 printd ("continue %d", state.pagecount);
2199 }
2200 else if (!strncmp ("sliceh", p, 6)) {
2201 int h;
2202
2203 ret = sscanf (p + 6, " %d", &h);
2204 if (ret != 1) {
2205 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
2206 }
2207 if (h != state.sliceheight) {
2208 int i;
2209
2210 state.sliceheight = h;
2211 for (i = 0; i < state.texcount; ++i) {
2212 state.texowners[i].w = -1;
2213 state.texowners[i].h = -1;
2214 state.texowners[i].slice = NULL;
2215 }
2216 }
2217 }
2218 else if (!strncmp ("interrupt", p, 9)) {
2219 printd ("vmsg interrupted");
2220 }
2221 else {
2222 errx (1, "unknown command %.*s", len, p);
2223 }
2224 }
2225 return 0;
2226 }
2227
2228 CAMLprim value ml_realloctexts (value texcount_v)
2229 {
2230 CAMLparam1 (texcount_v);
2231 int ok;
2232
2233 if (trylock ("ml_realloctexts")) {
2234 ok = 0;
2235 goto done;
2236 }
2237 realloctexts (Int_val (texcount_v));
2238 ok = 1;
2239 unlock ("ml_realloctexts");
2240
2241 done:
2242 CAMLreturn (Val_bool (ok));
2243 }
2244
2245 static void recti (int x0, int y0, int x1, int y1)
2246 {
2247 GLfloat *v = state.vertices;
2248
2249 glVertexPointer (2, GL_FLOAT, 0, v);
2250 v[0] = x0; v[1] = y0;
2251 v[2] = x1; v[3] = y0;
2252 v[4] = x0; v[5] = y1;
2253 v[6] = x1; v[7] = y1;
2254 glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
2255 }
2256
2257 static void showsel (struct page *page, int ox, int oy)
2258 {
2259 int seen = 0;
2260 fz_irect bbox;
2261 fz_rect rect;
2262 fz_text_line *line;
2263 fz_page_block *pageb;
2264 fz_text_block *block;
2265 struct mark first, last;
2266 unsigned char selcolor[] = {15,15,15,140};
2267
2268 first = page->fmark;
2269 last = page->lmark;
2270
2271 if (!first.span || !last.span) return;
2272
2273 glEnable (GL_BLEND);
2274 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
2275 glColor4ubv (selcolor);
2276
2277 ox += state.pagedims[page->pdimno].bounds.x0;
2278 oy += state.pagedims[page->pdimno].bounds.y0;
2279 for (pageb = page->text->blocks;
2280 pageb < page->text->blocks + page->text->len;
2281 ++pageb) {
2282 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2283 block = pageb->u.text;
2284
2285 for (line = block->lines;
2286 line < block->lines + block->len;
2287 ++line) {
2288 fz_text_span *span;
2289 rect = fz_empty_rect;
2290
2291 for (span = line->first_span; span; span = span->next) {
2292 int i, j, k;
2293 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
2294
2295 j = 0;
2296 k = span->len - 1;
2297
2298 if (span == page->fmark.span && span == page->lmark.span) {
2299 seen = 1;
2300 j = MIN (first.i, last.i);
2301 k = MAX (first.i, last.i);
2302 }
2303 else {
2304 if (span == first.span) {
2305 seen = 1;
2306 j = first.i;
2307 }
2308 else if (span == last.span) {
2309 seen = 1;
2310 k = last.i;
2311 }
2312 }
2313
2314 if (seen) {
2315 for (i = j; i <= k; ++i) {
2316 fz_rect bbox1;
2317 fz_union_rect (&rect,
2318 fz_text_char_bbox (&bbox1, span, i));
2319 }
2320 fz_round_rect (&bbox, &rect);
2321 lprintf ("%d %d %d %d oy=%d ox=%d\n",
2322 bbox.x0,
2323 bbox.y0,
2324 bbox.x1,
2325 bbox.y1,
2326 oy, ox);
2327
2328 recti (bbox.x0 + ox, bbox.y0 + oy,
2329 bbox.x1 + ox, bbox.y1 + oy);
2330 if (span == last.span) {
2331 goto done;
2332 }
2333 rect = fz_empty_rect;
2334 }
2335 }
2336 }
2337 }
2338 done:
2339 glDisable (GL_BLEND);
2340 }
2341
2342 #include "glfont.c"
2343
2344 static void highlightlinks (struct page *page, int xoff, int yoff)
2345 {
2346 fz_matrix ctm, tm, pm;
2347 fz_link *link, *links;
2348 GLfloat *texcoords = state.texcoords;
2349 GLfloat *vertices = state.vertices;
2350
2351 switch (page->type) {
2352 case DPDF:
2353 links = page->u.pdfpage->links;
2354 break;
2355
2356 case DXPS:
2357 links = page->u.xpspage->links;
2358 break;
2359
2360 default:
2361 return;
2362 }
2363
2364 glEnable (GL_TEXTURE_1D);
2365 glEnable (GL_BLEND);
2366 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2367 glBindTexture (GL_TEXTURE_1D, state.stid);
2368
2369 xoff -= state.pagedims[page->pdimno].bounds.x0;
2370 yoff -= state.pagedims[page->pdimno].bounds.y0;
2371 fz_translate (&tm, xoff, yoff);
2372 pm = pagectm (page);
2373 fz_concat (&ctm, &pm, &tm);
2374
2375 glTexCoordPointer (1, GL_FLOAT, 0, texcoords);
2376 glVertexPointer (2, GL_FLOAT, 0, vertices);
2377
2378 for (link = links; link; link = link->next) {
2379 fz_point p1, p2, p3, p4;
2380
2381 p1.x = link->rect.x0;
2382 p1.y = link->rect.y0;
2383
2384 p2.x = link->rect.x1;
2385 p2.y = link->rect.y0;
2386
2387 p3.x = link->rect.x1;
2388 p3.y = link->rect.y1;
2389
2390 p4.x = link->rect.x0;
2391 p4.y = link->rect.y1;
2392
2393 fz_transform_point (&p1, &ctm);
2394 fz_transform_point (&p2, &ctm);
2395 fz_transform_point (&p3, &ctm);
2396 fz_transform_point (&p4, &ctm);
2397
2398 switch (link->dest.kind) {
2399 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2400 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2401 case FZ_LINK_LAUNCH: glColor3ub (0, 255, 0); break;
2402 default: glColor3ub (0, 0, 0); break;
2403 }
2404
2405 {
2406 float w, h, s, t;
2407
2408 w = p2.x - p1.x;
2409 h = p2.y - p1.y;
2410 t = sqrtf (w*w + h*h) * .25f;
2411
2412 w = p3.x - p2.x;
2413 h = p3.y - p2.y;
2414 s = sqrtf (w*w + h*h) * .25f;
2415
2416 texcoords[0] = 0; vertices[0] = p1.x; vertices[1] = p1.y;
2417 texcoords[1] = t; vertices[2] = p2.x; vertices[3] = p2.y;
2418
2419 texcoords[2] = 0; vertices[4] = p2.x; vertices[5] = p2.y;
2420 texcoords[3] = s; vertices[6] = p3.x; vertices[7] = p3.y;
2421
2422 texcoords[4] = 0; vertices[8] = p3.x; vertices[9] = p3.y;
2423 texcoords[5] = t; vertices[10] = p4.x; vertices[11] = p4.y;
2424
2425 texcoords[6] = 0; vertices[12] = p4.x; vertices[13] = p4.y;
2426 texcoords[7] = s; vertices[14] = p1.x; vertices[15] = p1.y;
2427 }
2428 glDrawArrays (GL_LINES, 0, 8);
2429 }
2430
2431 glDisable (GL_BLEND);
2432 glDisable (GL_TEXTURE_1D);
2433 }
2434
2435 static int compareslinks (const void *l, const void *r)
2436 {
2437 struct slink const *ls = l;
2438 struct slink const *rs = r;
2439 if (ls->bbox.y0 == rs->bbox.y0) {
2440 return rs->bbox.x0 - rs->bbox.x0;
2441 }
2442 return ls->bbox.y0 - rs->bbox.y0;
2443 }
2444
2445 static void droptext (struct page *page)
2446 {
2447 if (page->text) {
2448 fz_free_text_page (state.ctx, page->text);
2449 page->fmark.i = -1;
2450 page->lmark.i = -1;
2451 page->fmark.span = NULL;
2452 page->lmark.span = NULL;
2453 page->text = NULL;
2454 }
2455 if (page->sheet) {
2456 fz_free_text_sheet (state.ctx, page->sheet);
2457 page->sheet = NULL;
2458 }
2459 }
2460
2461 static void dropslinks (struct page *page)
2462 {
2463 if (page->slinks) {
2464 free (page->slinks);
2465 page->slinks = NULL;
2466 page->slinkcount = 0;
2467 }
2468 }
2469
2470 static void ensureslinks (struct page *page)
2471 {
2472 fz_matrix ctm;
2473 int i, count = 0;
2474 size_t slinksize = sizeof (*page->slinks);
2475 fz_link *link, *links;
2476
2477 if (state.gen != page->sgen) {
2478 dropslinks (page);
2479 page->sgen = state.gen;
2480 }
2481 if (page->slinks) return;
2482
2483 switch (page->type) {
2484 case DPDF:
2485 links = page->u.pdfpage->links;
2486 trimctm (page->u.pdfpage, page->pdimno);
2487 fz_concat (&ctm,
2488 &state.pagedims[page->pdimno].tctm,
2489 &state.pagedims[page->pdimno].ctm);
2490 break;
2491
2492 case DXPS:
2493 links = page->u.xpspage->links;
2494 ctm = state.pagedims[page->pdimno].ctm;
2495 break;
2496
2497 default:
2498 return;
2499 }
2500
2501 for (link = links; link; link = link->next) {
2502 count++;
2503 }
2504 if (count > 0) {
2505 page->slinkcount = count;
2506 page->slinks = calloc (count, slinksize);
2507 if (!page->slinks) {
2508 err (1, "realloc slinks %d", count);
2509 }
2510
2511 for (i = 0, link = links; link; ++i, link = link->next) {
2512 fz_rect rect;
2513
2514 rect = link->rect;
2515 fz_transform_rect (&rect, &ctm);
2516 page->slinks[i].link = link;
2517 fz_round_rect (&page->slinks[i].bbox, &rect);
2518 }
2519 qsort (page->slinks, count, slinksize, compareslinks);
2520 }
2521 }
2522
2523 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2524 static void fmt_linkn (char *s, unsigned int u)
2525 {
2526 unsigned int len; unsigned int q;
2527 unsigned int zma = 'z' - 'a' + 1;
2528 len = 1; q = u;
2529 while (q > zma - 1) { ++len; q /= zma; }
2530 if (s) {
2531 s += len;
2532 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2533 /* handles u == 0 */
2534 }
2535 s[len] = 0;
2536 }
2537
2538 static void highlightslinks (struct page *page, int xoff, int yoff,
2539 int noff, char *targ, int tlen, int hfsize)
2540 {
2541 int i;
2542 char buf[40];
2543 struct slink *slink;
2544 double x0, y0, x1, y1, w;
2545
2546 ensureslinks (page);
2547 glColor3ub (0xc3, 0xb0, 0x91);
2548 for (i = 0; i < page->slinkcount; ++i) {
2549 fmt_linkn (buf, i + noff);
2550 if (!tlen || !strncmp (targ, buf, tlen)) {
2551 slink = &page->slinks[i];
2552
2553 x0 = slink->bbox.x0 + xoff - 5;
2554 y1 = slink->bbox.y0 + yoff - 5;
2555 y0 = y1 + 10 + hfsize;
2556 w = measure_string (state.face, hfsize, buf);
2557 x1 = x0 + w + 10;
2558 recti (x0, y0, x1, y1);
2559 }
2560 }
2561
2562 glEnable (GL_BLEND);
2563 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2564 glEnable (GL_TEXTURE_2D);
2565 glColor3ub (0, 0, 0);
2566 for (i = 0; i < page->slinkcount; ++i) {
2567 fmt_linkn (buf, i + noff);
2568 if (!tlen || !strncmp (targ, buf, tlen)) {
2569 slink = &page->slinks[i];
2570
2571 x0 = slink->bbox.x0 + xoff;
2572 y0 = slink->bbox.y0 + yoff + hfsize;
2573 draw_string (state.face, hfsize, x0, y0, buf);
2574 }
2575 }
2576 glDisable (GL_TEXTURE_2D);
2577 glDisable (GL_BLEND);
2578 }
2579
2580 static void uploadslice (struct tile *tile, struct slice *slice)
2581 {
2582 int offset;
2583 struct slice *slice1;
2584 unsigned char *texdata;
2585
2586 offset = 0;
2587 for (slice1 = tile->slices; slice != slice1; slice1++) {
2588 offset += slice1->h * tile->w * tile->pixmap->n;
2589 }
2590 if (slice->texindex != -1 && slice->texindex < state.texcount
2591 && state.texowners[slice->texindex].slice == slice) {
2592 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2593 }
2594 else {
2595 int subimage = 0;
2596 int texindex = state.texindex++ % state.texcount;
2597
2598 if (state.texowners[texindex].w == tile->w) {
2599 if (state.texowners[texindex].h >= slice->h) {
2600 subimage = 1;
2601 }
2602 else {
2603 state.texowners[texindex].h = slice->h;
2604 }
2605 }
2606 else {
2607 state.texowners[texindex].h = slice->h;
2608 }
2609
2610 state.texowners[texindex].w = tile->w;
2611 state.texowners[texindex].slice = slice;
2612 slice->texindex = texindex;
2613
2614 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2615 if (tile->pbo) {
2616 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2617 texdata = 0;
2618 }
2619 else {
2620 texdata = tile->pixmap->samples;
2621 }
2622 if (subimage) {
2623 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2624 0,
2625 0,
2626 0,
2627 tile->w,
2628 slice->h,
2629 state.texform,
2630 state.texty,
2631 texdata+offset
2632 );
2633 }
2634 else {
2635 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2636 0,
2637 state.texiform,
2638 tile->w,
2639 slice->h,
2640 0,
2641 state.texform,
2642 state.texty,
2643 texdata+offset
2644 );
2645 }
2646 if (tile->pbo) {
2647 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2648 }
2649 }
2650 }
2651
2652 CAMLprim value ml_begintiles (value unit_v)
2653 {
2654 CAMLparam1 (unit_v);
2655 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2656 glTexCoordPointer (2, GL_FLOAT, 0, state.texcoords);
2657 glVertexPointer (2, GL_FLOAT, 0, state.vertices);
2658 CAMLreturn (unit_v);
2659 }
2660
2661 CAMLprim value ml_endtiles (value unit_v)
2662 {
2663 CAMLparam1 (unit_v);
2664 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2665 CAMLreturn (unit_v);
2666 }
2667
2668 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2669 {
2670 CAMLparam2 (args_v, ptr_v);
2671 int dispx = Int_val (Field (args_v, 0));
2672 int dispy = Int_val (Field (args_v, 1));
2673 int dispw = Int_val (Field (args_v, 2));
2674 int disph = Int_val (Field (args_v, 3));
2675 int tilex = Int_val (Field (args_v, 4));
2676 int tiley = Int_val (Field (args_v, 5));
2677 char *s = String_val (ptr_v);
2678 struct tile *tile = parse_pointer ("ml_drawtile", s);
2679 int slicey, firstslice;
2680 struct slice *slice;
2681 GLfloat *texcoords = state.texcoords;
2682 GLfloat *vertices = state.vertices;
2683
2684 firstslice = tiley / tile->sliceheight;
2685 slice = &tile->slices[firstslice];
2686 slicey = tiley % tile->sliceheight;
2687
2688 while (disph > 0) {
2689 int dh;
2690
2691 dh = slice->h - slicey;
2692 dh = MIN (disph, dh);
2693 uploadslice (tile, slice);
2694
2695 texcoords[0] = tilex; texcoords[1] = slicey;
2696 texcoords[2] = tilex+dispw; texcoords[3] = slicey;
2697 texcoords[4] = tilex; texcoords[5] = slicey+dh;
2698 texcoords[6] = tilex+dispw; texcoords[7] = slicey+dh;
2699
2700 vertices[0] = dispx; vertices[1] = dispy;
2701 vertices[2] = dispx+dispw; vertices[3] = dispy;
2702 vertices[4] = dispx; vertices[5] = dispy+dh;
2703 vertices[6] = dispx+dispw; vertices[7] = dispy+dh;
2704
2705 glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
2706 dispy += dh;
2707 disph -= dh;
2708 slice++;
2709 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2710 slicey = 0;
2711 }
2712 CAMLreturn (Val_unit);
2713 }
2714
2715 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2716 value xoff_v, value yoff_v,
2717 value li_v)
2718 {
2719 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2720 int xoff = Int_val (xoff_v);
2721 int yoff = Int_val (yoff_v);
2722 int noff = Int_val (Field (li_v, 0));
2723 char *targ = String_val (Field (li_v, 1));
2724 int tlen = caml_string_length (Field (li_v, 1));
2725 int hfsize = Int_val (Field (li_v, 2));
2726 char *s = String_val (ptr_v);
2727 int hlmask = Int_val (hlinks_v);
2728 struct page *page = parse_pointer ("ml_postprocess", s);
2729
2730 if (!page->u.ptr) {
2731 /* deal with loadpage failed pages */
2732 goto done;
2733 }
2734
2735 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2736 if (trylock ("ml_postprocess")) {
2737 noff = 0;
2738 goto done;
2739 }
2740 if (hlmask & 2) {
2741 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2742 noff = page->slinkcount;
2743 }
2744 if (page->tgen == state.gen) {
2745 showsel (page, xoff, yoff);
2746 }
2747 unlock ("ml_postprocess");
2748
2749 done:
2750 CAMLreturn (Val_int (noff));
2751 }
2752
2753 static fz_link *getlink (struct page *page, int x, int y)
2754 {
2755 fz_point p;
2756 fz_matrix ctm;
2757 const fz_matrix *tctm;
2758 fz_link *link, *links;
2759
2760 switch (page->type) {
2761 case DPDF:
2762 trimctm (page->u.pdfpage, page->pdimno);
2763 tctm = &state.pagedims[page->pdimno].tctm;
2764 links = page->u.pdfpage->links;
2765 break;
2766
2767 case DXPS:
2768 tctm = &fz_identity;
2769 links = page->u.xpspage->links;
2770 break;
2771
2772 default:
2773 return NULL;
2774 }
2775 p.x = x;
2776 p.y = y;
2777
2778 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2779 fz_invert_matrix (&ctm, &ctm);
2780 fz_transform_point (&p, &ctm);
2781
2782 for (link = links; link; link = link->next) {
2783 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2784 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2785 return link;
2786 }
2787 }
2788 }
2789 return NULL;
2790 }
2791
2792 static void ensuretext (struct page *page)
2793 {
2794 if (state.gen != page->tgen) {
2795 droptext (page);
2796 page->tgen = state.gen;
2797 }
2798 if (!page->text) {
2799 fz_matrix ctm;
2800 fz_device *tdev;
2801
2802 page->text = fz_new_text_page (state.ctx);
2803 page->sheet = fz_new_text_sheet (state.ctx);
2804 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2805 ctm = pagectm (page);
2806 fz_begin_page (tdev, &fz_infinite_rect, &ctm);
2807 fz_run_display_list (page->dlist, tdev, &ctm, &fz_infinite_rect, NULL);
2808 qsort (page->text->blocks, page->text->len,
2809 sizeof (*page->text->blocks), compareblocks);
2810 fz_end_page (tdev);
2811 fz_free_device (tdev);
2812 }
2813 }
2814
2815 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2816 {
2817 CAMLparam2 (start_page_v, dir_v);
2818 CAMLlocal1 (ret_v);
2819 int i, dir = Int_val (dir_v);
2820 int start_page = Int_val (start_page_v);
2821 int end_page = dir > 0 ? state.pagecount : -1;
2822
2823 ret_v = Val_int (0);
2824 if (!(state.type == DPDF || state.type == DXPS)) {
2825 goto done;
2826 }
2827
2828 lock ("ml_findpage_with_links");
2829 for (i = start_page + dir; i != end_page; i += dir) {
2830 int found;
2831
2832 switch (state.type) {
2833 case DPDF:
2834 {
2835 pdf_page *page = NULL;
2836
2837 fz_try (state.ctx) {
2838 page = pdf_load_page (state.u.pdf, i);
2839 found = !!page->links;
2840 }
2841 fz_catch (state.ctx) {
2842 found = 0;
2843 }
2844 if (page) {
2845 freepdfpage (page);
2846 }
2847 }
2848 break;
2849 case DXPS:
2850 {
2851 xps_page *page = xps_load_page (state.u.xps, i);
2852 found = !!page->links;
2853 freexpspage (page);
2854 }
2855 break;
2856
2857 default:
2858 ARSERT (0 && "invalid document type");
2859 }
2860
2861 if (found) {
2862 ret_v = caml_alloc_small (1, 1);
2863 Field (ret_v, 0) = Val_int (i);
2864 goto unlock;
2865 }
2866 }
2867 unlock:
2868 unlock ("ml_findpage_with_links");
2869
2870 done:
2871 CAMLreturn (ret_v);
2872 }
2873
2874 enum { dir_first, dir_last };
2875 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2876
2877 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2878 {
2879 CAMLparam2 (ptr_v, dir_v);
2880 CAMLlocal2 (ret_v, pos_v);
2881 struct page *page;
2882 int dirtag, i, slinkindex;
2883 struct slink *found = NULL ,*slink;
2884 char *s = String_val (ptr_v);
2885
2886 page = parse_pointer ("ml_findlink", s);
2887 ret_v = Val_int (0);
2888 if (trylock ("ml_findlink")) {
2889 goto done;
2890 }
2891
2892 ensureslinks (page);
2893
2894 if (Is_block (dir_v)) {
2895 dirtag = Tag_val (dir_v);
2896 switch (dirtag) {
2897 case dir_first_visible:
2898 {
2899 int x0, y0, dir, first_index, last_index;
2900
2901 pos_v = Field (dir_v, 0);
2902 x0 = Int_val (Field (pos_v, 0));
2903 y0 = Int_val (Field (pos_v, 1));
2904 dir = Int_val (Field (pos_v, 2));
2905
2906 if (dir >= 0) {
2907 dir = 1;
2908 first_index = 0;
2909 last_index = page->slinkcount;
2910 }
2911 else {
2912 first_index = page->slinkcount - 1;
2913 last_index = -1;
2914 }
2915
2916 for (i = first_index; i != last_index; i += dir) {
2917 slink = &page->slinks[i];
2918 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2919 found = slink;
2920 break;
2921 }
2922 }
2923 }
2924 break;
2925
2926 case dir_left:
2927 slinkindex = Int_val (Field (dir_v, 0));
2928 found = &page->slinks[slinkindex];
2929 for (i = slinkindex - 1; i >= 0; --i) {
2930 slink = &page->slinks[i];
2931 if (slink->bbox.x0 < found->bbox.x0) {
2932 found = slink;
2933 break;
2934 }
2935 }
2936 break;
2937
2938 case dir_right:
2939 slinkindex = Int_val (Field (dir_v, 0));
2940 found = &page->slinks[slinkindex];
2941 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2942 slink = &page->slinks[i];
2943 if (slink->bbox.x0 > found->bbox.x0) {
2944 found = slink;
2945 break;
2946 }
2947 }
2948 break;
2949
2950 case dir_down:
2951 slinkindex = Int_val (Field (dir_v, 0));
2952 found = &page->slinks[slinkindex];
2953 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2954 slink = &page->slinks[i];
2955 if (slink->bbox.y0 >= found->bbox.y0) {
2956 found = slink;
2957 break;
2958 }
2959 }
2960 break;
2961
2962 case dir_up:
2963 slinkindex = Int_val (Field (dir_v, 0));
2964 found = &page->slinks[slinkindex];
2965 for (i = slinkindex - 1; i >= 0; --i) {
2966 slink = &page->slinks[i];
2967 if (slink->bbox.y0 <= found->bbox.y0) {
2968 found = slink;
2969 break;
2970 }
2971 }
2972 break;
2973 }
2974 }
2975 else {
2976 dirtag = Int_val (dir_v);
2977 switch (dirtag) {
2978 case dir_first:
2979 found = page->slinks;
2980 break;
2981
2982 case dir_last:
2983 if (page->slinks) {
2984 found = page->slinks + (page->slinkcount - 1);
2985 }
2986 break;
2987 }
2988 }
2989 if (found) {
2990 ret_v = caml_alloc_small (2, 1);
2991 Field (ret_v, 0) = Val_int (found - page->slinks);
2992 }
2993
2994 unlock ("ml_findlink");
2995 done:
2996 CAMLreturn (ret_v);
2997 }
2998
2999 enum { uuri, ugoto, utext, uunexpected,
3000 ulaunch, unamed, uremote, uremotedest };
3001
3002 #define LINKTOVAL \
3003 { \
3004 int pageno; \
3005 \
3006 switch (link->dest.kind) { \
3007 case FZ_LINK_GOTO: \
3008 { \
3009 fz_point p; \
3010 \
3011 pageno = link->dest.ld.gotor.page; \
3012 p.x = 0; \
3013 p.y = 0; \
3014 \
3015 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
3016 p.y = link->dest.ld.gotor.lt.y; \
3017 fz_transform_point (&p, &pdim->lctm); \
3018 if (p.y < 0) p.y = 0; \
3019 } \
3020 tup_v = caml_alloc_tuple (2); \
3021 ret_v = caml_alloc_small (1, ugoto); \
3022 Field (tup_v, 0) = Val_int (pageno); \
3023 Field (tup_v, 1) = Val_int (p.y); \
3024 Field (ret_v, 0) = tup_v; \
3025 } \
3026 break; \
3027 \
3028 case FZ_LINK_URI: \
3029 str_v = caml_copy_string (link->dest.ld.uri.uri); \
3030 ret_v = caml_alloc_small (1, uuri); \
3031 Field (ret_v, 0) = str_v; \
3032 break; \
3033 \
3034 case FZ_LINK_LAUNCH: \
3035 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
3036 ret_v = caml_alloc_small (1, ulaunch); \
3037 Field (ret_v, 0) = str_v; \
3038 break; \
3039 \
3040 case FZ_LINK_NAMED: \
3041 str_v = caml_copy_string (link->dest.ld.named.named); \
3042 ret_v = caml_alloc_small (1, unamed); \
3043 Field (ret_v, 0) = str_v; \
3044 break; \
3045 \
3046 case FZ_LINK_GOTOR: \
3047 { \
3048 int rty; \
3049 \
3050 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
3051 pageno = link->dest.ld.gotor.page; \
3052 if (pageno == -1) { \
3053 gr_v = caml_copy_string (link->dest.ld.gotor.dest); \
3054 rty = uremotedest; \
3055 } \
3056 else { \
3057 gr_v = Val_int (pageno); \
3058 rty = uremote; \
3059 } \
3060 tup_v = caml_alloc_tuple (2); \
3061 ret_v = caml_alloc_small (1, rty); \
3062 Field (tup_v, 0) = str_v; \
3063 Field (tup_v, 1) = gr_v; \
3064 Field (ret_v, 0) = tup_v; \
3065 } \
3066 break; \
3067 \
3068 default: \
3069 { \
3070 char buf[80]; \
3071 \
3072 snprintf (buf, sizeof (buf), \
3073 "unhandled link kind %d", link->dest.kind); \
3074 str_v = caml_copy_string (buf); \
3075 ret_v = caml_alloc_small (1, uunexpected); \
3076 Field (ret_v, 0) = str_v; \
3077 } \
3078 break; \
3079 } \
3080 }
3081
3082 CAMLprim value ml_getlink (value ptr_v, value n_v)
3083 {
3084 CAMLparam2 (ptr_v, n_v);
3085 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
3086 fz_link *link;
3087 struct page *page;
3088 struct pagedim *pdim;
3089 char *s = String_val (ptr_v);
3090
3091 ret_v = Val_int (0);
3092 if (trylock ("ml_getlink")) {
3093 goto done;
3094 }
3095
3096 page = parse_pointer ("ml_getlink", s);
3097 ensureslinks (page);
3098 pdim = &state.pagedims[page->pdimno];
3099 link = page->slinks[Int_val (n_v)].link;
3100 LINKTOVAL;
3101
3102 unlock ("ml_getlink");
3103 done:
3104 CAMLreturn (ret_v);
3105 }
3106
3107 CAMLprim value ml_getlinkcount (value ptr_v)
3108 {
3109 CAMLparam1 (ptr_v);
3110 struct page *page;
3111 char *s = String_val (ptr_v);
3112
3113 page = parse_pointer ("ml_getlinkcount", s);
3114 CAMLreturn (Val_int (page->slinkcount));
3115 }
3116
3117 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
3118 {
3119 CAMLparam2 (ptr_v, n_v);
3120 CAMLlocal1 (ret_v);
3121 struct page *page;
3122 struct slink *slink;
3123 char *s = String_val (ptr_v);
3124
3125 page = parse_pointer ("ml_getlinkrect", s);
3126 ret_v = caml_alloc_tuple (4);
3127 if (trylock ("ml_getlinkrect")) {
3128 Field (ret_v, 0) = Val_int (0);
3129 Field (ret_v, 1) = Val_int (0);
3130 Field (ret_v, 2) = Val_int (0);
3131 Field (ret_v, 3) = Val_int (0);
3132 goto done;
3133 }
3134 ensureslinks (page);
3135
3136 slink = &page->slinks[Int_val (n_v)];
3137 Field (ret_v, 0) = Val_int (slink->bbox.x0);
3138 Field (ret_v, 1) = Val_int (slink->bbox.y0);
3139 Field (ret_v, 2) = Val_int (slink->bbox.x1);
3140 Field (ret_v, 3) = Val_int (slink->bbox.y1);
3141 unlock ("ml_getlinkrect");
3142
3143 done:
3144 CAMLreturn (ret_v);
3145 }
3146
3147 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
3148 {
3149 CAMLparam3 (ptr_v, x_v, y_v);
3150 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
3151 fz_link *link;
3152 struct page *page;
3153 char *ptr = String_val (ptr_v);
3154 int x = Int_val (x_v), y = Int_val (y_v);
3155 struct pagedim *pdim;
3156
3157 ret_v = Val_int (0);
3158 if (trylock ("ml_whatsunder")) {
3159 goto done;
3160 }
3161
3162 page = parse_pointer ("ml_whatsunder", ptr);
3163 pdim = &state.pagedims[page->pdimno];
3164 x += pdim->bounds.x0;
3165 y += pdim->bounds.y0;
3166 link = getlink (page, x, y);
3167 if (link) {
3168 LINKTOVAL;
3169 }
3170 else {
3171 fz_rect *b;
3172 fz_page_block *pageb;
3173 fz_text_block *block;
3174
3175 ensuretext (page);
3176 for (pageb = page->text->blocks;
3177 pageb < page->text->blocks + page->text->len;
3178 ++pageb) {
3179 fz_text_line *line;
3180 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3181 block = pageb->u.text;
3182
3183 b = &block->bbox;
3184 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3185 continue;
3186
3187 for (line = block->lines;
3188 line < block->lines + block->len;
3189 ++line) {
3190 fz_text_span *span;
3191
3192 b = &line->bbox;
3193 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3194 continue;
3195
3196 for (span = line->first_span; span; span = span->next) {
3197 int charnum;
3198
3199 b = &span->bbox;
3200 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3201 continue;
3202
3203 for (charnum = 0; charnum < span->len; ++charnum) {
3204 fz_rect bbox;
3205 fz_text_char_bbox (&bbox, span, charnum);
3206 b = &bbox;
3207
3208 if (x >= b->x0 && x <= b->x1
3209 && y >= b->y0 && y <= b->y1) {
3210 fz_text_style *style = span->text->style;
3211 const char *n2 =
3212 style->font && style->font->name
3213 ? style->font->name
3214 : "Span has no font name"
3215 ;
3216 FT_FaceRec *face = style->font->ft_face;
3217 if (face && face->family_name) {
3218 char *s;
3219 char *n1 = face->family_name;
3220 size_t l1 = strlen (n1);
3221 size_t l2 = strlen (n2);
3222
3223 if (l1 != l2 || memcmp (n1, n2, l1)) {
3224 s = malloc (l1 + l2 + 2);
3225 if (s) {
3226 memcpy (s, n2, l2);
3227 s[l2] = '=';
3228 memcpy (s + l2 + 1, n1, l1 + 1);
3229 str_v = caml_copy_string (s);
3230 free (s);
3231 }
3232 }
3233 }
3234 if (str_v == Val_unit) {
3235 str_v = caml_copy_string (n2);
3236 }
3237 ret_v = caml_alloc_small (1, utext);
3238 Field (ret_v, 0) = str_v;
3239 goto unlock;
3240 }
3241 }
3242 }
3243 }
3244 }
3245 }
3246 unlock:
3247 unlock ("ml_whatsunder");
3248
3249 done:
3250 CAMLreturn (ret_v);
3251 }
3252
3253 enum { mark_page, mark_block, mark_line, mark_word };
3254
3255 static int uninteresting (int c)
3256 {
3257 return c == ' ' || c == '\n' || c == '\t' || c == '\n' || c == '\r'
3258 || ispunct (c);
3259 }
3260
3261 CAMLprim value ml_clearmark (value ptr_v)
3262 {
3263 CAMLparam1 (ptr_v);
3264 char *s = String_val (ptr_v);
3265 struct page *page;
3266
3267 if (trylock ("ml_clearmark")) {
3268 goto done;
3269 }
3270
3271 page = parse_pointer ("ml_clearmark", s);
3272 page->fmark.span = NULL;
3273 page->lmark.span = NULL;
3274 page->fmark.i = 0;
3275 page->lmark.i = 0;
3276
3277 unlock ("ml_clearmark");
3278 done:
3279 CAMLreturn (Val_unit);
3280 }
3281
3282 CAMLprim value ml_markunder (value ptr_v, value x_v, value y_v, value mark_v)
3283 {
3284 CAMLparam4 (ptr_v, x_v, y_v, mark_v);
3285 CAMLlocal1 (ret_v);
3286 fz_rect *b;
3287 struct page *page;
3288 fz_text_line *line;
3289 fz_page_block *pageb;
3290 fz_text_block *block;
3291 struct pagedim *pdim;
3292 int mark = Int_val (mark_v);
3293 char *s = String_val (ptr_v);
3294 int x = Int_val (x_v), y = Int_val (y_v);
3295
3296 ret_v = Val_bool (0);
3297 if (trylock ("ml_markunder")) {
3298 goto done;
3299 }
3300
3301 page = parse_pointer ("ml_markunder", s);
3302 pdim = &state.pagedims[page->pdimno];
3303
3304 ensuretext (page);
3305
3306 if (mark == mark_page) {
3307 int i;
3308 fz_page_block *pb1 = NULL, *pb2 = NULL;
3309
3310 for (i = 0; i < page->text->len; ++i) {
3311 if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
3312 pb1 = &page->text->blocks[i];
3313 break;
3314 }
3315 }
3316 if (!pb1) goto unlock;
3317
3318 for (i = page->text->len - 1; i >= 0; --i) {
3319 if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
3320 pb2 = &page->text->blocks[i];
3321 break;
3322 }
3323 }
3324 if (!pb2) goto unlock;
3325
3326 block = pb1->u.text;
3327
3328 page->fmark.i = 0;
3329 page->fmark.span = block->lines->first_span;
3330
3331 block = pb2->u.text;
3332 line = &block->lines[block->len - 1];
3333 page->lmark.i = line->last_span->len - 1;
3334 page->lmark.span = line->last_span;
3335 ret_v = Val_bool (1);
3336 goto unlock;
3337 }
3338
3339 x += pdim->bounds.x0;
3340 y += pdim->bounds.y0;
3341
3342 for (pageb = page->text->blocks;
3343 pageb < page->text->blocks + page->text->len;
3344 ++pageb) {
3345 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3346 block = pageb->u.text;
3347
3348 b = &block->bbox;
3349 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3350 continue;
3351
3352 if (mark == mark_block) {
3353 page->fmark.i = 0;
3354 page->fmark.span = block->lines->first_span;
3355
3356 line = &block->lines[block->len - 1];
3357 page->lmark.i = line->last_span->len - 1;
3358 page->lmark.span = line->last_span;
3359 ret_v = Val_bool (1);
3360 goto unlock;
3361 }
3362
3363 for (line = block->lines;
3364 line < block->lines + block->len;
3365 ++line) {
3366 fz_text_span *span;
3367
3368 b = &line->bbox;
3369 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3370 continue;
3371
3372 if (mark == mark_line) {
3373 page->fmark.i = 0;
3374 page->fmark.span = line->first_span;
3375
3376 page->lmark.i = line->last_span->len - 1;
3377 page->lmark.span = line->last_span;
3378 ret_v = Val_bool (1);
3379 goto unlock;
3380 }
3381
3382 for (span = line->first_span; span; span = span->next) {
3383 int charnum;
3384
3385 b = &span->bbox;
3386 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3387 continue;
3388
3389 for (charnum = 0; charnum < span->len; ++charnum) {
3390 fz_rect bbox;
3391 fz_text_char_bbox (&bbox, span, charnum);
3392 b = &bbox;
3393
3394 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1) {
3395 /* unicode ftw */
3396 int charnum2, charnum3 = -1, charnum4 = -1;
3397
3398 if (uninteresting (span->text[charnum].c)) goto unlock;
3399
3400 for (charnum2 = charnum; charnum2 >= 0; --charnum2) {
3401 if (uninteresting (span->text[charnum2].c)) {
3402 charnum3 = charnum2 + 1;
3403 break;
3404 }
3405 }
3406 if (charnum3 == -1) charnum3 = 0;
3407
3408 for (charnum2 = charnum + 1;
3409 charnum2 < span->len;
3410 ++charnum2) {
3411 if (uninteresting (span->text[charnum2].c)) break;
3412 charnum4 = charnum2;
3413 }
3414 if (charnum4 == -1) goto unlock;
3415
3416 page->fmark.i = charnum3;
3417 page->fmark.span = span;
3418
3419 page->lmark.i = charnum4;
3420 page->lmark.span = span;
3421 ret_v = Val_bool (1);
3422 goto unlock;
3423 }
3424 }
3425 }
3426 }
3427 }
3428 unlock:
3429 if (!Bool_val (ret_v)) {
3430 page->fmark.span = NULL;
3431 page->lmark.span = NULL;
3432 page->fmark.i = 0;
3433 page->lmark.i = 0;
3434 }
3435 unlock ("ml_markunder");
3436
3437 done:
3438 CAMLreturn (ret_v);
3439 }
3440
3441 CAMLprim value ml_rectofblock (value ptr_v, value x_v, value y_v)
3442 {
3443 CAMLparam3 (ptr_v, x_v, y_v);
3444 CAMLlocal2 (ret_v, res_v);
3445 fz_rect *b = NULL;
3446 struct page *page;
3447 fz_page_block *pageb;
3448 struct pagedim *pdim;
3449 char *s = String_val (ptr_v);
3450 int x = Int_val (x_v), y = Int_val (y_v);
3451
3452 ret_v = Val_int (0);
3453 if (trylock ("ml_rectofblock")) {
3454 goto done;
3455 }
3456
3457 page = parse_pointer ("ml_rectofblock", s);
3458 pdim = &state.pagedims[page->pdimno];
3459 x += pdim->bounds.x0;
3460 y += pdim->bounds.y0;
3461
3462 ensuretext (page);
3463
3464 for (pageb = page->text->blocks;
3465 pageb < page->text->blocks + page->text->len;
3466 ++pageb) {
3467 switch (pageb->type) {
3468 case FZ_PAGE_BLOCK_TEXT:
3469 b = &pageb->u.text->bbox;
3470 break;
3471
3472 case FZ_PAGE_BLOCK_IMAGE:
3473 b = &pageb->u.image->bbox;
3474 break;
3475
3476 default:
3477 continue;
3478 }
3479
3480 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1)
3481 break;
3482 b = NULL;
3483 }
3484 if (b) {
3485 res_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3486 ret_v = caml_alloc_small (1, 1);
3487 Store_double_field (res_v, 0, b->x0);
3488 Store_double_field (res_v, 1, b->x1);
3489 Store_double_field (res_v, 2, b->y0);
3490 Store_double_field (res_v, 3, b->y1);
3491 Field (ret_v, 0) = res_v;
3492 }
3493 unlock ("ml_rectofblock");
3494
3495 done:
3496 CAMLreturn (ret_v);
3497 }
3498
3499 CAMLprim value ml_seltext (value ptr_v, value rect_v)
3500 {
3501 CAMLparam2 (ptr_v, rect_v);
3502 fz_rect b;
3503 struct page *page;
3504 struct pagedim *pdim;
3505 char *s = String_val (ptr_v);
3506 int i, x0, x1, y0, y1, fi, li;
3507 fz_text_line *line;
3508 fz_page_block *pageb;
3509 fz_text_block *block;
3510 fz_text_span *span, *fspan, *lspan;
3511
3512 if (trylock ("ml_seltext")) {
3513 goto done;
3514 }
3515
3516 page = parse_pointer ("ml_seltext", s);
3517 ensuretext (page);
3518
3519 pdim = &state.pagedims[page->pdimno];
3520 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;
3521 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
3522 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
3523 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
3524
3525 if (y0 > y1) {
3526 int t = y0;
3527 y0 = y1;
3528 y1 = t;
3529 x0 = x1;
3530 x1 = t;
3531 }
3532
3533 if (0) {
3534 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3535 glColor3ub (128, 128, 128);
3536 recti (x0, y0, x1, y1);
3537 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3538 }
3539
3540 fi = page->fmark.i;
3541 fspan = page->fmark.span;
3542
3543 li = page->lmark.i;
3544 lspan = page->lmark.span;
3545
3546 for (pageb = page->text->blocks;
3547 pageb < page->text->blocks + page->text->len;
3548 ++pageb) {
3549 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3550 block = pageb->u.text;
3551 for (line = block->lines;
3552 line < block->lines + block->len;
3553 ++line) {
3554
3555 for (span = line->first_span; span; span = span->next) {
3556 for (i = 0; i < span->len; ++i) {
3557 int selected = 0;
3558
3559 fz_text_char_bbox (&b, span, i);
3560
3561 if (x0 >= b.x0 && x0 <= b.x1
3562 && y0 >= b.y0 && y0 <= b.y1) {
3563 fspan = span;
3564 fi = i;
3565 selected = 1;
3566 }
3567 if (x1 >= b.x0 && x1 <= b.x1
3568 && y1 >= b.y0 && y1 <= b.y1) {
3569 lspan = span;
3570 li = i;
3571 selected = 1;
3572 }
3573 if (0 && selected) {
3574 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3575 glColor3ub (128, 128, 128);
3576 recti (b.x0, b.y0, b.x1, b.y1);
3577 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3578 }
3579 }
3580 }
3581 }
3582 }
3583 if (x1 < x0 && fspan == lspan) {
3584 i = fi;
3585 span = fspan;
3586
3587 fi = li;
3588 fspan = lspan;
3589
3590 li = i;
3591 lspan = span;
3592 }
3593
3594 page->fmark.i = fi;
3595 page->fmark.span = fspan;
3596
3597 page->lmark.i = li;
3598 page->lmark.span = lspan;
3599
3600 unlock ("ml_seltext");
3601
3602 done:
3603 CAMLreturn (Val_unit);
3604 }
3605
3606 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
3607 {
3608 char buf[4];
3609 int i, len, ret;
3610
3611 for (i = a; i <= b; ++i) {
3612 len = fz_runetochar (buf, span->text[i].c);
3613 ret = fwrite (buf, len, 1, f);
3614
3615 if (ret != 1) {
3616 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
3617 len, ret, strerror (errno));
3618 return -1;
3619 }
3620 }
3621 return 0;
3622 }
3623
3624 #ifdef __CYGWIN__
3625 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
3626 {
3627 caml_failwith ("ml_popen not implemented under Cygwin");
3628 }
3629 #else
3630 CAMLprim value ml_popen (value command_v, value fds_v)
3631 {
3632 CAMLparam2 (command_v, fds_v);
3633 CAMLlocal2 (l_v, tup_v);
3634 int ret;
3635 char *msg = NULL;
3636 value earg_v = Nothing;
3637 posix_spawnattr_t attr;
3638 posix_spawn_file_actions_t fa;
3639 char *argv[] = { "/bin/sh", "-c", NULL, NULL };
3640
3641 argv[2] = String_val (command_v);
3642
3643 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3644 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3645 }
3646
3647 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3648 msg = "posix_spawnattr_init";
3649 goto fail1;
3650 }
3651
3652 #ifdef POSIX_SPAWN_USEVFORK
3653 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3654 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3655 goto fail;
3656 }
3657 #endif
3658
3659 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3660 int fd1, fd2;
3661
3662 tup_v = Field (l_v, 0);
3663 fd1 = Int_val (Field (tup_v, 0));
3664 fd2 = Int_val (Field (tup_v, 1));
3665 if (fd2 < 0) {
3666 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3667 msg = "posix_spawn_file_actions_addclose";
3668 earg_v = tup_v;
3669 goto fail;
3670 }
3671 }
3672 else {
3673 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3674 msg = "posix_spawn_file_actions_adddup2";
3675 earg_v = tup_v;
3676 goto fail;
3677 }
3678 }
3679 }
3680
3681 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
3682 msg = "posix_spawn";
3683 goto fail;
3684 }
3685
3686 fail:
3687 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3688 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3689 }
3690
3691 fail1:
3692 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3693 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3694 strerror (ret));
3695 }
3696
3697 if (msg)
3698 unix_error (ret, msg, earg_v);
3699
3700 CAMLreturn (Val_unit);
3701 }
3702 #endif
3703
3704 CAMLprim value ml_hassel (value ptr_v)
3705 {
3706 CAMLparam1 (ptr_v);
3707 CAMLlocal1 (ret_v);
3708 struct page *page;
3709 char *s = String_val (ptr_v);
3710
3711 ret_v = Val_bool (0);
3712 if (trylock ("ml_hassel")) {
3713 goto done;
3714 }
3715
3716 page = parse_pointer ("ml_hassel", s);
3717 ret_v = Val_bool (page->fmark.span && page->lmark.span);
3718 unlock ("ml_hassel");
3719 done:
3720 CAMLreturn (ret_v);
3721 }
3722
3723 CAMLprim value ml_copysel (value fd_v, value ptr_v)
3724 {
3725 CAMLparam2 (fd_v, ptr_v);
3726 FILE *f;
3727 int seen = 0;
3728 struct page *page;
3729 fz_text_line *line;
3730 fz_page_block *pageb;
3731 fz_text_block *block;
3732 int fd = Int_val (fd_v);
3733 char *s = String_val (ptr_v);
3734
3735 if (trylock ("ml_copysel")) {
3736 goto done;
3737 }
3738
3739 page = parse_pointer ("ml_copysel", s);
3740
3741 if (!page->fmark.span || !page->lmark.span) {
3742 fprintf (stderr, "nothing to copy on page %d\n", page->pageno);
3743 goto unlock;
3744 }
3745
3746 f = fdopen (fd, "w");
3747 if (!f) {
3748 fprintf (stderr, "failed to fdopen sel pipe (from fd %d): %s\n",
3749 fd, strerror (errno));
3750 f = stdout;
3751 }
3752
3753 for (pageb = page->text->blocks;
3754 pageb < page->text->blocks + page->text->len;
3755 ++pageb) {
3756 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3757 block = pageb->u.text;
3758 for (line = block->lines;
3759 line < block->lines + block->len;
3760 ++line) {
3761 fz_text_span *span;
3762
3763 for (span = line->first_span; span; span = span->next) {
3764 int a, b;
3765
3766 seen |= span == page->fmark.span || span == page->lmark.span;
3767 a = span == page->fmark.span ? page->fmark.i : 0;
3768 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3769
3770 if (seen) {
3771 if (pipespan (f, span, a, b)) {
3772 goto close;
3773 }
3774 if (span == page->lmark.span) {
3775 goto close;
3776 }
3777 if (span == line->last_span) {
3778 if (putc ('\n', f) == EOF) {
3779 fprintf (stderr,
3780 "failed break line on sel pipe: %s\n",
3781 strerror (errno));
3782 goto close;
3783 }
3784 }
3785 }
3786 }
3787 }
3788 }
3789 close:
3790 if (f != stdout) {
3791 int ret = fclose (f);
3792 fd = -1;
3793 if (ret == -1) {
3794 if (errno != ECHILD) {
3795 fprintf (stderr, "failed to close sel pipe: %s\n",
3796 strerror (errno));
3797 }
3798 }
3799 }
3800 unlock:
3801 unlock ("ml_copysel");
3802
3803 done:
3804 if (fd >= 0) {
3805 if (close (fd)) {
3806 fprintf (stderr, "failed to close sel pipe: %s\n",
3807 strerror (errno));
3808 }
3809 }
3810 CAMLreturn (Val_unit);
3811 }
3812
3813 CAMLprim value ml_getpdimrect (value pagedimno_v)
3814 {
3815 CAMLparam1 (pagedimno_v);
3816 CAMLlocal1 (ret_v);
3817 int pagedimno = Int_val (pagedimno_v);
3818 fz_rect box;
3819
3820 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3821 if (trylock ("ml_getpdimrect")) {
3822 box = fz_empty_rect;
3823 }
3824 else {
3825 box = state.pagedims[pagedimno].mediabox;
3826 unlock ("ml_getpdimrect");
3827 }
3828
3829 Store_double_field (ret_v, 0, box.x0);
3830 Store_double_field (ret_v, 1, box.x1);
3831 Store_double_field (ret_v, 2, box.y0);
3832 Store_double_field (ret_v, 3, box.y1);
3833
3834 CAMLreturn (ret_v);
3835 }
3836
3837 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3838 value dw_v, value cols_v)
3839 {
3840 CAMLparam3 (winw_v, winh_v, dw_v);
3841 CAMLlocal1 (ret_v);
3842 int i;
3843 double zoom = -1.;
3844 double maxh = 0.0;
3845 struct pagedim *p;
3846 double winw = Int_val (winw_v);
3847 double winh = Int_val (winh_v);
3848 double dw = Int_val (dw_v);
3849 double cols = Int_val (cols_v);
3850 double pw = 1.0, ph = 1.0;
3851
3852 if (trylock ("ml_zoom_for_height")) {
3853 goto done;
3854 }
3855
3856 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3857 double w = p->pagebox.x1 / cols;
3858 double h = p->pagebox.y1;
3859 if (h > maxh) {
3860 maxh = h;
3861 ph = h;
3862 if (state.fitmodel != FitProportional) pw = w;
3863 }
3864 if ((state.fitmodel == FitProportional) && w > pw) pw = w;
3865 }
3866
3867 zoom = (((winh / ph) * pw) + dw) / winw;
3868 unlock ("ml_zoom_for_height");
3869 done:
3870 ret_v = caml_copy_double (zoom);
3871 CAMLreturn (ret_v);
3872 }
3873
3874 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3875 {
3876 CAMLparam4 (pt_v, x_v, y_v, string_v);
3877 CAMLlocal1 (ret_v);
3878 int pt = Int_val(pt_v);
3879 int x = Int_val (x_v);
3880 int y = Int_val (y_v);
3881 double w;
3882
3883 w = draw_string (state.face, pt, x, y, String_val (string_v));
3884 ret_v = caml_copy_double (w);
3885 CAMLreturn (ret_v);
3886 }
3887
3888 CAMLprim value ml_measure_string (value pt_v, value string_v)
3889 {
3890 CAMLparam2 (pt_v, string_v);
3891 CAMLlocal1 (ret_v);
3892 int pt = Int_val (pt_v);
3893 double w;
3894
3895 w = measure_string (state.face, pt, String_val (string_v));
3896 ret_v = caml_copy_double (w);
3897 CAMLreturn (ret_v);
3898 }
3899
3900 CAMLprim value ml_getpagebox (value opaque_v)
3901 {
3902 CAMLparam1 (opaque_v);
3903 CAMLlocal1 (ret_v);
3904 fz_rect rect;
3905 fz_irect bbox;
3906 fz_matrix ctm;
3907 fz_device *dev;
3908 char *s = String_val (opaque_v);
3909 struct page *page = parse_pointer ("ml_getpagebox", s);
3910
3911 ret_v = caml_alloc_tuple (4);
3912 dev = fz_new_bbox_device (state.ctx, &rect);
3913 dev->hints |= FZ_IGNORE_SHADE;
3914
3915 switch (page->type) {
3916 case DPDF:
3917 ctm = pagectm (page);
3918 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, &ctm, NULL);
3919 break;
3920
3921 case DXPS:
3922 ctm = pagectm (page);
3923 xps_run_page (state.u.xps, page->u.xpspage, dev, &ctm, NULL);
3924 break;
3925
3926 default:
3927 rect = fz_infinite_rect;
3928 break;
3929 }
3930
3931 fz_free_device (dev);
3932 fz_round_rect (&bbox, &rect);
3933 Field (ret_v, 0) = Val_int (bbox.x0);
3934 Field (ret_v, 1) = Val_int (bbox.y0);
3935 Field (ret_v, 2) = Val_int (bbox.x1);
3936 Field (ret_v, 3) = Val_int (bbox.y1);
3937
3938 CAMLreturn (ret_v);
3939 }
3940
3941 CAMLprim value ml_setaalevel (value level_v)
3942 {
3943 CAMLparam1 (level_v);
3944
3945 state.aalevel = Int_val (level_v);
3946 CAMLreturn (Val_unit);
3947 }
3948
3949 #pragma GCC diagnostic push
3950 #pragma GCC diagnostic ignored "-Wvariadic-macros"
3951 #include <X11/Xlib.h>
3952 #pragma GCC diagnostic pop
3953
3954 #include <GL/glx.h>
3955
3956 static struct {
3957 Window wid;
3958 Display *dpy;
3959 GLXContext ctx;
3960 XVisualInfo *visual;
3961 } glx;
3962
3963 CAMLprim value ml_glxinit (value display_v, value wid_v, value screen_v)
3964 {
3965 CAMLparam3 (display_v, wid_v, screen_v);
3966 int attribs[] = {GLX_RGBA, GLX_DOUBLEBUFFER, None};
3967
3968 glx.dpy = XOpenDisplay (String_val (display_v));
3969 if (!glx.dpy) {
3970 caml_failwith ("XOpenDisplay");
3971 }
3972
3973 glx.visual = glXChooseVisual (glx.dpy, Int_val (screen_v), attribs);
3974 if (!glx.visual) {
3975 XCloseDisplay (glx.dpy);
3976 caml_failwith ("glXChooseVisual");
3977 }
3978
3979 glx.wid = Int_val (wid_v);
3980 CAMLreturn (Val_int (glx.visual->visualid));
3981 }
3982
3983 CAMLprim value ml_glxcompleteinit (value unit_v)
3984 {
3985 CAMLparam1 (unit_v);
3986
3987 glx.ctx = glXCreateContext (glx.dpy, glx.visual, NULL, True);
3988 if (!glx.ctx) {
3989 caml_failwith ("glXCreateContext");
3990 }
3991
3992 XFree (glx.visual);
3993 glx.visual = NULL;
3994
3995 if (!glXMakeCurrent (glx.dpy, glx.wid, glx.ctx)) {
3996 glXDestroyContext (glx.dpy, glx.ctx);
3997 glx.ctx = NULL;
3998 caml_failwith ("glXMakeCurrent");
3999 }
4000 CAMLreturn (Val_unit);
4001 }
4002
4003 CAMLprim value ml_swapb (value unit_v)
4004 {
4005 CAMLparam1 (unit_v);
4006 glXSwapBuffers (glx.dpy, glx.wid);
4007 CAMLreturn (Val_unit);
4008 }
4009
4010 #include "keysym2ucs.c"
4011
4012 CAMLprim value ml_keysymtoutf8 (value keysym_v)
4013 {
4014 CAMLparam1 (keysym_v);
4015 CAMLlocal1 (str_v);
4016 KeySym keysym = Int_val (keysym_v);
4017 Rune rune;
4018 int len;
4019 char buf[5];
4020
4021 rune = keysym2ucs (keysym);
4022 len = fz_runetochar (buf, rune);
4023 buf[len] = 0;
4024 str_v = caml_copy_string (buf);
4025 CAMLreturn (str_v);
4026 }
4027
4028 enum { piunknown, pilinux, piosx, pisun, pibsd, picygwin };
4029
4030 CAMLprim value ml_platform (value unit_v)
4031 {
4032 CAMLparam1 (unit_v);
4033 CAMLlocal2 (tup_v, arr_v);
4034 int platid = piunknown;
4035 struct utsname buf;
4036
4037 #if defined __linux__
4038 platid = pilinux;
4039 #elif defined __CYGWIN__
4040 platid = picygwin;
4041 #elif defined __DragonFly__ || defined __FreeBSD__
4042 || defined __OpenBSD__ || defined __NetBSD__
4043 platid = pibsd;
4044 #elif defined __sun__
4045 platid = pisun;
4046 #elif defined __APPLE__
4047 platid = piosx;
4048 #endif
4049 if (uname (&buf)) err (1, "uname");
4050
4051 tup_v = caml_alloc_tuple (2);
4052 {
4053 char const *sar[] = {
4054 buf.sysname,
4055 buf.release,
4056 buf.version,
4057 buf.machine,
4058 NULL
4059 };
4060 arr_v = caml_copy_string_array (sar);
4061 }
4062 Field (tup_v, 0) = Val_int (platid);
4063 Field (tup_v, 1) = arr_v;
4064 CAMLreturn (tup_v);
4065 }
4066
4067 CAMLprim value ml_cloexec (value fd_v)
4068 {
4069 CAMLparam1 (fd_v);
4070 int fd = Int_val (fd_v);
4071
4072 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
4073 uerror ("fcntl", Nothing);
4074 }
4075 CAMLreturn (Val_unit);
4076 }
4077
4078 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
4079 {
4080 CAMLparam2 (w_v, h_v);
4081 CAMLlocal1 (ret_v);
4082 struct pbo *pbo;
4083 int w = Int_val (w_v);
4084 int h = Int_val (h_v);
4085 int cs = Int_val (cs_v);
4086
4087 if (state.pbo_usable) {
4088 pbo = calloc (sizeof (*pbo), 1);
4089 if (!pbo) {
4090 err (1, "calloc pbo");
4091 }
4092
4093 switch (cs) {
4094 case 0:
4095 case 1:
4096 pbo->size = w*h*4;
4097 break;
4098 case 2:
4099 pbo->size = w*h*2;
4100 break;
4101 default:
4102 errx (1, "ml_getpbo: invalid colorspace %d", cs);
4103 }
4104
4105 state.glGenBuffersARB (1, &pbo->id);
4106 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
4107 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
4108 NULL, GL_STREAM_DRAW);
4109 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
4110 GL_READ_WRITE);
4111 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
4112 if (!pbo->ptr) {
4113 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
4114 state.glDeleteBuffersARB (1, &pbo->id);
4115 free (pbo);
4116 ret_v = caml_copy_string ("0");
4117 }
4118 else {
4119 int res;
4120 char *s;
4121
4122 res = snprintf (NULL, 0, "%" FMT_ptr, FMT_ptr_cast (pbo));
4123 if (res < 0) {
4124 err (1, "snprintf %" FMT_ptr " failed", FMT_ptr_cast (pbo));
4125 }
4126 s = malloc (res+1);
4127 if (!s) {
4128 err (1, "malloc %d bytes failed", res+1);
4129 }
4130 res = sprintf (s, "%" FMT_ptr, FMT_ptr_cast (pbo));
4131 if (res < 0) {
4132 err (1, "sprintf %" FMT_ptr " failed", FMT_ptr_cast (pbo));
4133 }
4134 ret_v = caml_copy_string (s);
4135 free (s);
4136 }
4137 }
4138 else {
4139 ret_v = caml_copy_string ("0");
4140 }
4141 CAMLreturn (ret_v);
4142 }
4143
4144 CAMLprim value ml_freepbo (value s_v)
4145 {
4146 CAMLparam1 (s_v);
4147 char *s = String_val (s_v);
4148 struct tile *tile = parse_pointer ("ml_freepbo", s);
4149
4150 if (tile->pbo) {
4151 state.glDeleteBuffersARB (1, &tile->pbo->id);
4152 tile->pbo->id = -1;
4153 tile->pbo->ptr = NULL;
4154 tile->pbo->size = -1;
4155 }
4156 CAMLreturn (Val_unit);
4157 }
4158
4159 CAMLprim value ml_unmappbo (value s_v)
4160 {
4161 CAMLparam1 (s_v);
4162 char *s = String_val (s_v);
4163 struct tile *tile = parse_pointer ("ml_unmappbo", s);
4164
4165 if (tile->pbo) {
4166 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
4167 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
4168 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
4169 }
4170 tile->pbo->ptr = NULL;
4171 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
4172 }
4173 CAMLreturn (Val_unit);
4174 }
4175
4176 static void setuppbo (void)
4177 {
4178 #define GGPA(n) (*(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n))
4179 state.pbo_usable = GGPA (glBindBufferARB)
4180 && GGPA (glUnmapBufferARB)
4181 && GGPA (glMapBufferARB)
4182 && GGPA (glBufferDataARB)
4183 && GGPA (glGenBuffersARB)
4184 && GGPA (glDeleteBuffersARB);
4185 #undef GGPA
4186 }
4187
4188 CAMLprim value ml_pbo_usable (value unit_v)
4189 {
4190 CAMLparam1 (unit_v);
4191 CAMLreturn (Val_bool (state.pbo_usable));
4192 }
4193
4194 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
4195 {
4196 CAMLparam3 (ptr_v, x_v, y_v);
4197 CAMLlocal2 (ret_v, tup_v);
4198 struct page *page;
4199 char *s = String_val (ptr_v);
4200 int x = Int_val (x_v), y = Int_val (y_v);
4201 struct pagedim *pdim;
4202 fz_point p;
4203 fz_matrix ctm;
4204
4205 page = parse_pointer ("ml_unproject", s);
4206 pdim = &state.pagedims[page->pdimno];
4207
4208 ret_v = Val_int (0);
4209 if (trylock ("ml_unproject")) {
4210 goto done;
4211 }
4212
4213 switch (page->type) {
4214 case DPDF:
4215 trimctm (page->u.pdfpage, page->pdimno);
4216 break;
4217
4218 default:
4219 break;
4220 }
4221 p.x = x + pdim->bounds.x0;
4222 p.y = y + pdim->bounds.y0;
4223
4224 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
4225 fz_invert_matrix (&ctm, &ctm);
4226 fz_transform_point (&p, &ctm);
4227
4228 tup_v = caml_alloc_tuple (2);
4229 ret_v = caml_alloc_small (1, 1);
4230 Field (tup_v, 0) = Val_int (p.x);
4231 Field (tup_v, 1) = Val_int (p.y);
4232 Field (ret_v, 0) = tup_v;
4233
4234 unlock ("ml_unproject");
4235 done:
4236 CAMLreturn (ret_v);
4237 }
4238
4239 static void makestippletex (void)
4240 {
4241 const char pixels[] = "\xff\xff\0\0";
4242 glGenTextures (1, &state.stid);
4243 glBindTexture (GL_TEXTURE_1D, state.stid);
4244 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
4245 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
4246 glTexImage1D (
4247 GL_TEXTURE_1D,
4248 0,
4249 GL_ALPHA,
4250 4,
4251 0,
4252 GL_ALPHA,
4253 GL_UNSIGNED_BYTE,
4254 pixels
4255 );
4256 }
4257
4258 CAMLprim value ml_fz_version (value UNUSED_ATTR unit_v)
4259 {
4260 return caml_copy_string (FZ_VERSION);
4261 }
4262
4263 #ifdef USE_FONTCONFIG
4264 static struct {
4265 int inited;
4266 FcConfig *config;
4267 } fc;
4268
4269 static fz_font *fc_load_system_font_func (fz_context *ctx,
4270 const char *name,
4271 int bold,
4272 int italic,
4273 int UNUSED_ATTR needs_exact_metrics)
4274 {
4275 char *buf;
4276 size_t i, size;
4277 fz_font *font;
4278 FcChar8 *path;
4279 FcResult result;
4280 FcPattern *pat, *pat1;
4281
4282 lprintf ("looking up %s bold:%d italic:%d needs_exact_metrics:%d\n",
4283 name, bold, italic, needs_exact_metrics);
4284 if (!fc.inited) {
4285 fc.inited = 1;
4286 fc.config = FcInitLoadConfigAndFonts ();
4287 if (!fc.config) {
4288 lprintf ("FcInitLoadConfigAndFonts failed\n");
4289 return NULL;
4290 }
4291 }
4292 if (!fc.config) return NULL;
4293
4294 size = strlen (name);
4295 if (bold) size += sizeof (":bold") - 1;
4296 if (italic) size += sizeof (":italic") - 1;
4297 size += 1;
4298
4299 buf = malloc (size);
4300 if (!buf) {
4301 err (1, "malloc %zu failed", size);
4302 }
4303
4304 strcpy (buf, name);
4305 if (bold && italic) {
4306 strcat (buf, ":bold:italic");
4307 }
4308 else {
4309 if (bold) strcat (buf, ":bold");
4310 if (italic) strcat (buf, ":italic");
4311 }
4312 for (i = 0; i < size; ++i) {
4313 if (buf[i] == ',' || buf[i] == '-') buf[i] = ':';
4314 }
4315
4316 lprintf ("fcbuf=%s\n", buf);
4317 pat = FcNameParse ((FcChar8 *) buf);
4318 if (!pat) {
4319 printd ("emsg FcNameParse failed\n");
4320 free (buf);
4321 return NULL;
4322 }
4323
4324 if (!FcConfigSubstitute (fc.config, pat, FcMatchPattern)) {
4325 printd ("emsg FcConfigSubstitute failed\n");
4326 free (buf);
4327 return NULL;
4328 }
4329 FcDefaultSubstitute (pat);
4330
4331 pat1 = FcFontMatch (fc.config, pat, &result);
4332 if (!pat1) {
4333 printd ("emsg FcFontMatch failed\n");
4334 FcPatternDestroy (pat);
4335 free (buf);
4336 return NULL;
4337 }
4338
4339 if (FcPatternGetString (pat1, FC_FILE, 0, &path) != FcResultMatch) {
4340 printd ("emsg FcPatternGetString failed\n");
4341 FcPatternDestroy (pat);
4342 FcPatternDestroy (pat1);
4343 free (buf);
4344 return NULL;
4345 }
4346
4347 #if 0
4348 printd ("emsg name=%s path=%s\n", name, path);
4349 #endif
4350 font = fz_new_font_from_file (ctx, name, (char *) path, 0, 0);
4351 FcPatternDestroy (pat);
4352 FcPatternDestroy (pat1);
4353 free (buf);
4354 return font;
4355 }
4356 #endif
4357
4358 CAMLprim value ml_init (value csock_v, value params_v)
4359 {
4360 CAMLparam2 (csock_v, params_v);
4361 CAMLlocal2 (trim_v, fuzz_v);
4362 int ret;
4363 int texcount;
4364 char *fontpath;
4365 int colorspace;
4366 int mustoresize;
4367 int haspboext;
4368 struct sigaction sa;
4369
4370 state.csock = Int_val (csock_v);
4371 state.rotate = Int_val (Field (params_v, 0));
4372 state.fitmodel = Int_val (Field (params_v, 1));
4373 trim_v = Field (params_v, 2);
4374 texcount = Int_val (Field (params_v, 3));
4375 state.sliceheight = Int_val (Field (params_v, 4));
4376 mustoresize = Int_val (Field (params_v, 5));
4377 colorspace = Int_val (Field (params_v, 6));
4378 fontpath = String_val (Field (params_v, 7));
4379
4380 if (caml_string_length (Field (params_v, 8)) > 0) {
4381 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
4382
4383 if (!state.trimcachepath) {
4384 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
4385 strerror (errno));
4386 }
4387 }
4388 haspboext = Bool_val (Field (params_v, 9));
4389
4390 state.ctx = fz_new_context (NULL, NULL, mustoresize);
4391
4392 #ifdef USE_FONTCONFIG
4393 if (Bool_val (Field (params_v, 10))) {
4394 fz_install_load_system_font_funcs (
4395 state.ctx, fc_load_system_font_func, NULL
4396 );
4397 }
4398 #endif
4399
4400 state.trimmargins = Bool_val (Field (trim_v, 0));
4401 fuzz_v = Field (trim_v, 1);
4402 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
4403 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
4404 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
4405 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
4406
4407 set_tex_params (colorspace);
4408
4409 if (*fontpath) {
4410 #ifndef USE_FONTCONFIG
4411 state.face = load_font (fontpath);
4412 #else
4413 FcChar8 *path;
4414 FcResult result;
4415 char *buf = fontpath;
4416 FcPattern *pat, *pat1;
4417
4418 fc.inited = 1;
4419 fc.config = FcInitLoadConfigAndFonts ();
4420 if (!fc.config) {
4421 errx (1, "FcInitLoadConfigAndFonts failed");
4422 }
4423
4424 pat = FcNameParse ((FcChar8 *) buf);
4425 if (!pat) {
4426 errx (1, "FcNameParse failed");
4427 }
4428
4429 if (!FcConfigSubstitute (fc.config, pat, FcMatchPattern)) {
4430 errx (1, "FcConfigSubstitute failed");
4431 }
4432 FcDefaultSubstitute (pat);
4433
4434 pat1 = FcFontMatch (fc.config, pat, &result);
4435 if (!pat1) {
4436 errx (1, "FcFontMatch failed");
4437 }
4438
4439 if (FcPatternGetString (pat1, FC_FILE, 0, &path) != FcResultMatch) {
4440 errx (1, "FcPatternGetString failed");
4441 }
4442
4443 state.face = load_font ((char *) path);
4444 FcPatternDestroy (pat);
4445 FcPatternDestroy (pat1);
4446 #endif
4447 }
4448 else {
4449 unsigned int len;
4450 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
4451
4452 state.face = load_builtin_font (base, len);
4453 }
4454 if (!state.face) _exit (1);
4455
4456 realloctexts (texcount);
4457
4458 if (haspboext) {
4459 setuppbo ();
4460 }
4461
4462 makestippletex ();
4463
4464 #ifdef __CYGWIN__
4465 sa.sa_handler = SIG_IGN;
4466 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
4467 #else
4468 sa.sa_handler = SIG_DFL;
4469 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
4470 #endif
4471 if (sigemptyset (&sa.sa_mask)) {
4472 err (1, "sigemptyset");
4473 }
4474 if (sigaction (SIGCHLD, &sa, NULL)) {
4475 err (1, "sigaction");
4476 }
4477
4478 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
4479 if (ret) {
4480 errx (1, "pthread_create: %s", strerror (ret));
4481 }
4482
4483 CAMLreturn (Val_unit);
4484 }
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