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[llpp.git] / link.c
bloba6f6327da42a5e44a966175fe5dfb460d727faab
1 /* lots of code c&p-ed directly from mupdf */
2 #include <errno.h>
3 #include <stdio.h>
4 #include <ctype.h>
5 #include <string.h>
6 #include <stdlib.h>
7 #include <signal.h>
8 #include <wchar.h>
9
10 #include <unistd.h>
11 #include <pthread.h>
12 #include <sys/time.h>
13 #include <sys/types.h>
14 #include <sys/ioctl.h>
15
16 #ifdef __CYGWIN__
17 #include <cygwin/socket.h> /* FIONREAD */
18 #else
19 #include <spawn.h>
20 #endif
21
22 #include <regex.h>
23 #include <ctype.h>
24 #include <stdarg.h>
25 #include <limits.h>
26
27 #include <GL/gl.h>
28
29 #include <caml/fail.h>
30 #include <caml/alloc.h>
31 #include <caml/memory.h>
32 #include <caml/unixsupport.h>
33
34 #include <fitz.h>
35 #include <mupdf.h>
36 #include <mupdf-internal.h>
37 #include <muxps.h>
38 #include <muxps-internal.h>
39 #include <mucbz.h>
40
41 #include FT_FREETYPE_H
42
43 #define PIGGYBACK
44
45 #ifndef __USE_GNU
46 extern char **environ;
47 #endif
48
49 #define MIN(a,b) ((a) < (b) ? (a) : (b))
50 #define MAX(a,b) ((a) > (b) ? (a) : (b))
51
52 #if defined __GNUC__
53 #define NORETURN_ATTR __attribute__ ((noreturn))
54 #define UNUSED_ATTR __attribute__ ((unused))
55 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
56 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
57 #else
58 #define NORETURN_ATTR
59 #define UNUSED_ATTR
60 #define OPTIMIZE_ATTR(n)
61 #define GCC_FMT_ATTR(a, b)
62 #endif
63
64 #define FMT_s "zu"
65
66 #define FMT_ptr "p"
67 #define FMT_ptr_cast(p) (p)
68 #define FMT_ptr_cast2(p) (p)
69
70 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
71 err (int exitcode, const char *fmt, ...)
72 {
73 va_list ap;
74 int savederrno;
75
76 savederrno = errno;
77 va_start (ap, fmt);
78 vfprintf (stderr, fmt, ap);
79 va_end (ap);
80 fprintf (stderr, ": %s\n", strerror (savederrno));
81 fflush (stderr);
82 _exit (exitcode);
83 }
84
85 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
86 errx (int exitcode, const char *fmt, ...)
87 {
88 va_list ap;
89
90 va_start (ap, fmt);
91 vfprintf (stderr, fmt, ap);
92 va_end (ap);
93 fputc ('\n', stderr);
94 fflush (stderr);
95 _exit (exitcode);
96 }
97
98 #ifndef GL_TEXTURE_RECTANGLE_ARB
99 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
100 #endif
101
102 #ifndef GL_BGRA
103 #define GL_BGRA 0x80E1
104 #endif
105
106 #ifndef GL_UNSIGNED_INT_8_8_8_8
107 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
108 #endif
109
110 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
111 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
112 #endif
113
114 #if 0
115 #define lprintf printf
116 #else
117 #define lprintf(...)
118 #endif
119
120 #define ARSERT(cond) for (;;) { \
121 if (!(cond)) { \
122 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
123 } \
124 break; \
125 }
126
127 struct slice {
128 int h;
129 int texindex;
130 };
131
132 struct tile {
133 int x, y, w, h;
134 int slicecount;
135 int sliceheight;
136 struct pbo *pbo;
137 fz_pixmap *pixmap;
138 struct slice slices[1];
139 };
140
141 struct pagedim {
142 int pageno;
143 int rotate;
144 int left;
145 int tctmready;
146 fz_irect bounds;
147 fz_rect pagebox;
148 fz_rect mediabox;
149 fz_matrix ctm, zoomctm, lctm, tctm;
150 };
151
152 struct slink {
153 fz_irect bbox;
154 fz_link *link;
155 };
156
157 enum { DPDF, DXPS, DCBZ };
158
159 struct page {
160 int tgen;
161 int sgen;
162 int type;
163 int pageno;
164 int pdimno;
165 fz_text_page *text;
166 fz_text_sheet *sheet;
167 union {
168 void *ptr;
169 pdf_page *pdfpage;
170 xps_page *xpspage;
171 cbz_page *cbzpage;
172 } u;
173 fz_display_list *dlist;
174 int slinkcount;
175 struct slink *slinks;
176 struct mark {
177 int i;
178 fz_text_span *span;
179 } fmark, lmark;
180 void (*freepage) (void *);
181 };
182
183 struct {
184 int type;
185 int sliceheight;
186 struct pagedim *pagedims;
187 int pagecount;
188 int pagedimcount;
189 union {
190 pdf_document *pdf;
191 xps_document *xps;
192 cbz_document *cbz;
193 } u;
194 fz_context *ctx;
195 int w, h;
196
197 int texindex;
198 int texcount;
199 GLuint *texids;
200
201 GLenum texiform;
202 GLenum texform;
203 GLenum texty;
204
205 fz_colorspace *colorspace;
206
207 struct {
208 int w, h;
209 struct slice *slice;
210 } *texowners;
211
212 int rotate;
213 int proportional;
214 int trimmargins;
215 int needoutline;
216 int gen;
217 int aalevel;
218
219 int trimanew;
220 fz_irect trimfuzz;
221 fz_pixmap *pig;
222
223 pthread_t thread;
224 int cr, cw;
225 FT_Face face;
226
227 void (*closedoc) (void);
228 void (*freepage) (void *);
229
230 char *trimcachepath;
231
232 int pbo_usable;
233 void (*glBindBufferARB) (GLenum, GLuint);
234 GLboolean (*glUnmapBufferARB) (GLenum);
235 void *(*glMapBufferARB) (GLenum, GLenum);
236 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
237 void (*glGenBuffersARB) (GLsizei, GLuint *);
238 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
239 } state;
240
241 struct pbo {
242 GLuint id;
243 void *ptr;
244 size_t size;
245 };
246
247 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
248 {
249 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
250 }
251
252 static void UNUSED_ATTR debug_bbox (const char *cap, fz_irect r)
253 {
254 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
255 }
256
257 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
258 {
259 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
260 m.a, m.b, m.c, m.d, m.e, m.f);
261 }
262
263 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
264
265 static void lock (const char *cap)
266 {
267 int ret = pthread_mutex_lock (&mutex);
268 if (ret) {
269 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
270 }
271 }
272
273 static void unlock (const char *cap)
274 {
275 int ret = pthread_mutex_unlock (&mutex);
276 if (ret) {
277 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
278 }
279 }
280
281 static int trylock (const char *cap)
282 {
283 int ret = pthread_mutex_trylock (&mutex);
284 if (ret && ret != EBUSY) {
285 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
286 }
287 return ret == EBUSY;
288 }
289
290 static void *parse_pointer (const char *cap, const char *s)
291 {
292 int ret;
293 void *ptr;
294
295 ret = sscanf (s, "%" FMT_ptr, FMT_ptr_cast (&ptr));
296 if (ret != 1) {
297 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
298 }
299 return ptr;
300 }
301
302 static double now (void)
303 {
304 struct timeval tv;
305
306 if (gettimeofday (&tv, NULL)) {
307 err (1, "gettimeofday");
308 }
309 return tv.tv_sec + tv.tv_usec*1e-6;
310 }
311
312 static int hasdata (void)
313 {
314 int ret, avail;
315 ret = ioctl (state.cr, FIONREAD, &avail);
316 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
317 return avail > 0;
318 }
319
320 CAMLprim value ml_hasdata (value fd_v)
321 {
322 CAMLparam1 (fd_v);
323 int ret, avail;
324
325 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
326 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
327 CAMLreturn (Val_bool (avail > 0));
328 }
329
330 static void readdata (void *p, int size)
331 {
332 ssize_t n;
333
334 again:
335 n = read (state.cr, p, size);
336 if (n < 0) {
337 if (errno == EINTR) goto again;
338 err (1, "read (req %d, ret %zd)", size, n);
339 }
340 if (n - size) {
341 if (!n) errx (1, "EOF while reading");
342 errx (1, "read (req %d, ret %zd)", size, n);
343 }
344 }
345
346 static void writedata (char *p, int size)
347 {
348 char buf[4];
349 ssize_t n;
350
351 buf[0] = (size >> 24) & 0xff;
352 buf[1] = (size >> 16) & 0xff;
353 buf[2] = (size >> 8) & 0xff;
354 buf[3] = (size >> 0) & 0xff;
355
356 n = write (state.cw, buf, 4);
357 if (n != 4) {
358 if (!n) errx (1, "EOF while writing length");
359 err (1, "write %zd", n);
360 }
361
362 n = write (state.cw, p, size);
363 if (n - size) {
364 if (!n) errx (1, "EOF while writing data");
365 err (1, "write (req %d, ret %zd)", size, n);
366 }
367 }
368
369 static int readlen (void)
370 {
371 unsigned char p[4];
372
373 readdata (p, 4);
374 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
375 }
376
377 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
378 {
379 int size = 200, len;
380 va_list ap;
381 char *buf;
382
383 buf = malloc (size);
384 for (;;) {
385 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
386
387 va_start (ap, fmt);
388 len = vsnprintf (buf, size, fmt, ap);
389 va_end (ap);
390
391 if (len > -1 && len < size) {
392 writedata (buf, len);
393 break;
394 }
395
396 if (len > -1) {
397 size = len + 1;
398 }
399 else {
400 size *= 2;
401 }
402 buf = realloc (buf, size);
403 }
404 free (buf);
405 }
406
407 static void closepdf (void)
408 {
409 if (state.u.pdf) {
410 pdf_close_document (state.u.pdf);
411 state.u.pdf = NULL;
412 }
413 }
414
415 static void closexps (void)
416 {
417 if (state.u.xps) {
418 xps_close_document (state.u.xps);
419 state.u.xps = NULL;
420 }
421 }
422
423 static void closecbz (void)
424 {
425 if (state.u.cbz) {
426 cbz_close_document (state.u.cbz);
427 state.u.cbz = NULL;
428 }
429 }
430
431 static void freepdfpage (void *ptr)
432 {
433 pdf_free_page (state.u.pdf, ptr);
434 }
435
436 static void freeemptyxxxpage (void *ptr)
437 {
438 (void) ptr;
439 }
440
441 static void freexpspage (void *ptr)
442 {
443 xps_free_page (state.u.xps, ptr);
444 }
445
446 static void freecbzpage (void *ptr)
447 {
448 cbz_free_page (state.u.cbz, ptr);
449 }
450
451 static void openxref (char *filename, char *password)
452 {
453 int i, len;
454
455 for (i = 0; i < state.texcount; ++i) {
456 state.texowners[i].w = -1;
457 state.texowners[i].slice = NULL;
458 }
459
460 if (state.closedoc) state.closedoc ();
461
462 len = strlen (filename);
463
464 state.type = DPDF;
465 if (len > 4) {
466 char ext[4];
467
468 ext[0] = tolower ((int) filename[len-3]);
469 ext[1] = tolower ((int) filename[len-2]);
470 ext[2] = tolower ((int) filename[len-1]);
471
472 /**/ if (ext[0] == 'x' && ext[1] == 'p' && ext[2] == 's') {
473 state.type = DXPS;
474 }
475 else if (ext[0] == 'c' && ext[1] == 'b' && ext[2] == 'z') {
476 state.type = DCBZ;
477 }
478 }
479
480 if (state.pagedims) {
481 free (state.pagedims);
482 state.pagedims = NULL;
483 }
484 state.pagedimcount = 0;
485
486 fz_set_aa_level (state.ctx, state.aalevel);
487 switch (state.type) {
488 case DPDF:
489 state.u.pdf = pdf_open_document (state.ctx, filename);
490 if (pdf_needs_password (state.u.pdf)) {
491 int okay = pdf_authenticate_password (state.u.pdf, password);
492 if (!okay) {
493 errx (1, "invalid password");
494 }
495 }
496 state.pagecount = pdf_count_pages (state.u.pdf);
497 state.closedoc = closepdf;
498 state.freepage = freepdfpage;
499 break;
500
501 case DXPS:
502 state.u.xps = xps_open_document (state.ctx, filename);
503 state.pagecount = xps_count_pages (state.u.xps);
504 state.closedoc = closexps;
505 state.freepage = freexpspage;
506 break;
507
508 case DCBZ:
509 state.u.cbz = cbz_open_document (state.ctx, filename);
510 state.pagecount = cbz_count_pages (state.u.cbz);
511 state.closedoc = closecbz;
512 state.freepage = freecbzpage;
513 break;
514 }
515 }
516
517 static void pdfinfo (void)
518 {
519 if (state.type == DPDF) {
520 pdf_obj *infoobj;
521
522 printd ("info PDF version\t%d.%d",
523 state.u.pdf->version / 10, state.u.pdf->version % 10);
524
525 infoobj = pdf_dict_gets (state.u.pdf->trailer, "Info");
526 if (infoobj) {
527 int i;
528 char *s;
529 char *items[] = { "Title", "Author", "Creator",
530 "Producer", "CreationDate" };
531
532 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
533 pdf_obj *obj = pdf_dict_gets (infoobj, items[i]);
534 s = pdf_to_utf8 (state.u.pdf, obj);
535 if (*s) {
536 if (i == 0) {
537 printd ("title %s", s);
538 }
539 printd ("info %s\t%s", items[i], s);
540 }
541 fz_free (state.ctx, s);
542 }
543 }
544 printd ("infoend");
545 }
546 }
547
548 static void unlinktile (struct tile *tile)
549 {
550 int i;
551
552 for (i = 0; i < tile->slicecount; ++i) {
553 struct slice *s = &tile->slices[i];
554
555 if (s->texindex != -1) {
556 if (state.texowners[s->texindex].slice == s) {
557 state.texowners[s->texindex].slice = NULL;
558 }
559 }
560 }
561 }
562
563 static void freepage (struct page *page)
564 {
565 if (page->text) {
566 fz_free_text_page (state.ctx, page->text);
567 }
568 if (page->sheet) {
569 fz_free_text_sheet (state.ctx, page->sheet);
570 }
571 if (page->slinks) {
572 free (page->slinks);
573 }
574 page->freepage (page->u.ptr);
575 fz_free_display_list (state.ctx, page->dlist);
576 free (page);
577 }
578
579 static void freetile (struct tile *tile)
580 {
581 unlinktile (tile);
582 if (!tile->pbo) {
583 #ifndef PIGGYBACK
584 fz_drop_pixmap (state.ctx, tile->pixmap);
585 #else
586 if (state.pig) {
587 fz_drop_pixmap (state.ctx, state.pig);
588 }
589 state.pig = tile->pixmap;
590 #endif
591 }
592 else {
593 free (tile->pbo);
594 fz_drop_pixmap (state.ctx, tile->pixmap);
595 }
596 free (tile);
597 }
598
599 #ifdef __ALTIVEC__
600 #include <altivec.h>
601
602 static int cacheline32bytes;
603
604 static void __attribute__ ((constructor)) clcheck (void)
605 {
606 char **envp = environ;
607 unsigned long *auxv;
608
609 while (*envp++);
610
611 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
612 if (*auxv == 19) {
613 cacheline32bytes = auxv[1] == 32;
614 return;
615 }
616 }
617 }
618
619 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
620 {
621 size_t size = pixmap->w * pixmap->h * pixmap->n;
622 if (cacheline32bytes && size > 32) {
623 intptr_t a1, a2, diff;
624 size_t sizea, i;
625 vector unsigned char v = vec_splat_u8 (-1);
626 vector unsigned char *p;
627
628 a1 = a2 = (intptr_t) pixmap->samples;
629 a2 = (a1 + 31) & ~31;
630 diff = a2 - a1;
631 sizea = size - diff;
632 p = (void *) a2;
633
634 while (a1 != a2) *(char *) a1++ = 0xff;
635 for (i = 0; i < (sizea & ~31); i += 32) {
636 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
637 vec_st (v, i, p);
638 vec_st (v, i + 16, p);
639 }
640 while (i < sizea) *((char *) a1 + i++) = 0xff;
641 }
642 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
643 }
644 #else
645 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
646 #endif
647
648 static fz_matrix trimctm (pdf_page *page, int pindex)
649 {
650 fz_matrix ctm;
651 struct pagedim *pdim = &state.pagedims[pindex];
652
653 if (!pdim->tctmready) {
654 if (state.trimmargins) {
655 fz_rect realbox;
656 fz_matrix rm, sm, tm, im, ctm1;
657
658 fz_rotate (&rm, -pdim->rotate);
659 fz_scale (&sm, 1, -1);
660 fz_concat (&ctm, &rm, &sm);
661 realbox = pdim->mediabox;
662 fz_transform_rect (&realbox, &ctm);
663 fz_translate (&tm, -realbox.x0, -realbox.y0);
664 fz_concat (&ctm1, &ctm, &tm);
665 fz_invert_matrix (&im, &ctm1);
666 fz_concat (&ctm, &im, &ctm);
667 }
668 else {
669 ctm = fz_identity;
670 }
671 pdim->tctm = ctm;
672 pdim->tctmready = 1;
673 }
674 return pdim->tctm;
675 }
676
677 static fz_matrix pagectm (struct page *page)
678 {
679 fz_matrix ctm, tm;
680
681 if (page->type == DPDF) {
682 tm = trimctm (page->u.pdfpage, page->pdimno);
683 fz_concat (&ctm, &tm, &state.pagedims[page->pdimno].ctm);
684 }
685 else {
686 struct pagedim *pdim = &state.pagedims[page->pdimno];
687
688 fz_translate (&tm, -pdim->mediabox.x0, -pdim->mediabox.y0);
689 fz_concat (&ctm, &tm, &state.pagedims[page->pdimno].ctm);
690 }
691 return ctm;
692 }
693
694 static void *loadpage (int pageno, int pindex)
695 {
696 fz_device *dev;
697 struct page *page = NULL;
698
699 page = calloc (sizeof (struct page), 1);
700 if (!page) {
701 err (1, "calloc page %d", pageno);
702 }
703
704 page->dlist = fz_new_display_list (state.ctx);
705 dev = fz_new_list_device (state.ctx, page->dlist);
706 fz_try (state.ctx) {
707 switch (state.type) {
708 case DPDF:
709 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
710 pdf_run_page (state.u.pdf, page->u.pdfpage, dev,
711 &fz_identity, NULL);
712 page->freepage = freepdfpage;
713 break;
714
715 case DXPS:
716 page->u.xpspage = xps_load_page (state.u.xps, pageno);
717 xps_run_page (state.u.xps, page->u.xpspage, dev,
718 &fz_identity, NULL);
719 page->freepage = freexpspage;
720 break;
721
722 case DCBZ:
723 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
724 cbz_run_page (state.u.cbz, page->u.cbzpage, dev,
725 &fz_identity, NULL);
726 page->freepage = freecbzpage;
727 break;
728 }
729 }
730 fz_catch (state.ctx) {
731 page->u.ptr = NULL;
732 page->freepage = freeemptyxxxpage;
733 }
734 fz_free_device (dev);
735
736 page->pdimno = pindex;
737 page->pageno = pageno;
738 page->sgen = state.gen;
739 page->tgen = state.gen;
740 page->type = state.type;
741
742 return page;
743 }
744
745 static struct tile *alloctile (int h)
746 {
747 int i;
748 int slicecount;
749 size_t tilesize;
750 struct tile *tile;
751
752 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
753 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
754 tile = calloc (tilesize, 1);
755 if (!tile) {
756 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
757 }
758 for (i = 0; i < slicecount; ++i) {
759 int sh = MIN (h, state.sliceheight);
760 tile->slices[i].h = sh;
761 tile->slices[i].texindex = -1;
762 h -= sh;
763 }
764 tile->slicecount = slicecount;
765 tile->sliceheight = state.sliceheight;
766 return tile;
767 }
768
769 #ifdef OBSCURED_OPT
770 struct obs {
771 int cured;
772 fz_irect b;
773 };
774
775 static void obs_fill_image (fz_device *dev, fz_image *image,
776 const fz_matrix *ctm, float alpha)
777 {
778 struct obs *obs = dev->user;
779
780 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
781 fz_irect b;
782 fz_rect rect = fz_unit_rect;
783
784 fz_transform_rect (&rect, ctm);
785 fz_round_rect (&b, &rect);
786 fz_intersect_irect (&b, &obs->b);
787 obs->cured = b.x0 == obs->b.x0
788 && b.x1 == obs->b.x1
789 && b.y0 == obs->b.y0
790 && b.y1 == obs->b.y1;
791 }
792 }
793
794 static int obscured (struct page *page, fz_irect bbox)
795 {
796 fz_rect rect;
797 fz_matrix ctm;
798 fz_device dev;
799 struct obs obs;
800
801 memset (&dev, 0, sizeof (dev));
802 memset (&obs, 0, sizeof (obs));
803 dev.hints = 0;
804 dev.flags = 0;
805 dev.user = &obs;
806 dev.ctx = state.ctx;
807 dev.fill_image = obs_fill_image;
808 obs.b = bbox;
809 fz_rect_from_irect (&rect, &bbox);
810 ctm = pagectm (page);
811 fz_run_display_list (page->dlist, &dev, &ctm, &rect, NULL);
812 return obs.cured;
813 }
814 #define OBSCURED obscured
815 #else
816 #define OBSCURED(a, b) 0
817 #endif
818
819 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
820 struct pbo *pbo)
821 {
822 fz_rect rect;
823 fz_irect bbox;
824 fz_matrix ctm;
825 fz_device *dev;
826 struct tile *tile;
827 struct pagedim *pdim;
828
829 tile = alloctile (h);
830 pdim = &state.pagedims[page->pdimno];
831
832 bbox = pdim->bounds;
833 bbox.x0 += x;
834 bbox.y0 += y;
835 bbox.x1 = bbox.x0 + w;
836 bbox.y1 = bbox.y0 + h;
837
838 if (state.pig) {
839 if (state.pig->w == w
840 && state.pig->h == h
841 && state.pig->colorspace == state.colorspace) {
842 tile->pixmap = state.pig;
843 tile->pixmap->x = bbox.x0;
844 tile->pixmap->y = bbox.y0;
845 }
846 else {
847 fz_drop_pixmap (state.ctx, state.pig);
848 }
849 state.pig = NULL;
850 }
851 if (!tile->pixmap) {
852 if (pbo) {
853 tile->pixmap =
854 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
855 &bbox, pbo->ptr);
856 tile->pbo = pbo;
857 }
858 else {
859 tile->pixmap =
860 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox);
861 }
862 }
863
864 tile->w = w;
865 tile->h = h;
866 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
867 clearpixmap (tile->pixmap);
868 }
869 dev = fz_new_draw_device (state.ctx, tile->pixmap);
870 ctm = pagectm (page);
871 fz_rect_from_irect (&rect, &bbox);
872 fz_run_display_list (page->dlist, dev, &ctm, &rect, NULL);
873 fz_free_device (dev);
874
875 return tile;
876 }
877
878 static void initpdims (void)
879 {
880 double start, end;
881 int pageno, trim, show;
882 FILE *trimf = NULL;
883 int trimw = 0;
884
885 start = now ();
886
887 if (state.trimmargins && state.trimcachepath) {
888 trimf = fopen (state.trimcachepath, "rb");
889 if (!trimf) {
890 trimf = fopen (state.trimcachepath, "wb");
891 trimw = 1;
892 }
893 }
894 for (pageno = 0; pageno < state.pagecount; ++pageno) {
895 int rotate = 0;
896 struct pagedim *p;
897 fz_rect mediabox;
898
899 switch (state.type) {
900 case DPDF: {
901 pdf_obj *pageobj = state.u.pdf->page_objs[pageno];
902
903 if (state.trimmargins) {
904 pdf_obj *obj;
905 pdf_page *page;
906
907 fz_try (state.ctx) {
908 page = pdf_load_page (state.u.pdf, pageno);
909 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
910 trim = state.trimanew || !obj;
911 if (trim) {
912 fz_rect rect;
913 fz_matrix ctm;
914 fz_device *dev;
915
916 dev = fz_new_bbox_device (state.ctx, &rect);
917 dev->hints |= FZ_IGNORE_SHADE;
918 fz_invert_matrix (&ctm, &page->ctm);
919 pdf_run_page (state.u.pdf, page, dev, &fz_identity, NULL);
920 fz_free_device (dev);
921
922 rect.x0 += state.trimfuzz.x0;
923 rect.x1 += state.trimfuzz.x1;
924 rect.y0 += state.trimfuzz.y0;
925 rect.y1 += state.trimfuzz.y1;
926 fz_transform_rect (&rect, &ctm);
927 fz_intersect_rect (&rect, &page->mediabox);
928
929 if (fz_is_empty_rect (&rect)) {
930 mediabox = page->mediabox;
931 }
932 else {
933 mediabox = rect;
934 }
935
936 obj = pdf_new_array (state.ctx, 4);
937 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x0));
938 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y0));
939 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x1));
940 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y1));
941 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
942 }
943 else {
944 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
945 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
946 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
947 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
948 }
949
950 rotate = page->rotate;
951 pdf_free_page (state.u.pdf, page);
952
953 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
954 if (show) {
955 printd ("progress %f Trimming %d",
956 (double) (pageno + 1) / state.pagecount,
957 pageno + 1);
958 }
959 }
960 fz_catch (state.ctx) {
961 fprintf (stderr, "failed to load page %d\n", pageno+1);
962 }
963 }
964 else {
965 fz_rect cropbox;
966
967 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "MediaBox"),
968 &mediabox);
969 if (fz_is_empty_rect (&mediabox)) {
970 fprintf (stderr, "cannot find page size for page %d\n",
971 pageno+1);
972 mediabox.x0 = 0;
973 mediabox.y0 = 0;
974 mediabox.x1 = 612;
975 mediabox.y1 = 792;
976 }
977
978 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "CropBox"),
979 &cropbox);
980 if (!fz_is_empty_rect (&cropbox)) {
981 fz_intersect_rect (&mediabox, &cropbox);
982 }
983 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
984 }
985 break;
986 }
987
988 case DXPS:
989 {
990 xps_page *page;
991
992 fz_try (state.ctx) {
993 page = xps_load_page (state.u.xps, pageno);
994 xps_bound_page (state.u.xps, page, &mediabox);
995 rotate = 0;
996 if (state.trimmargins) {
997 fz_rect rect;
998 fz_device *dev;
999
1000 dev = fz_new_bbox_device (state.ctx, &rect);
1001 dev->hints |= FZ_IGNORE_SHADE;
1002 xps_run_page (state.u.xps, page, dev,
1003 &fz_identity, NULL);
1004 fz_free_device (dev);
1005
1006 rect.x0 += state.trimfuzz.x0;
1007 rect.x1 += state.trimfuzz.x1;
1008 rect.y0 += state.trimfuzz.y0;
1009 rect.y1 += state.trimfuzz.y1;
1010 fz_intersect_rect (&rect, &mediabox);
1011
1012 if (!fz_is_empty_rect (&rect)) {
1013 mediabox = rect;
1014 }
1015 }
1016 xps_free_page (state.u.xps, page);
1017 printd ("progress %f loading %d",
1018 (double) (pageno + 1) / state.pagecount,
1019 pageno + 1);
1020 }
1021 fz_catch (state.ctx) {
1022 }
1023 }
1024 break;
1025
1026 case DCBZ:
1027 {
1028 rotate = 0;
1029 if (state.trimmargins && trimw) {
1030 cbz_page *page;
1031
1032 fz_try (state.ctx) {
1033 page = cbz_load_page (state.u.cbz, pageno);
1034 cbz_bound_page (state.u.cbz, page, &mediabox);
1035 cbz_free_page (state.u.cbz, page);
1036 printd ("progress %f Trimming %d",
1037 (double) (pageno + 1) / state.pagecount,
1038 pageno + 1);
1039 }
1040 fz_catch (state.ctx) {
1041 fprintf (stderr, "failed to load page %d\n", pageno+1);
1042 mediabox.x0 = 0;
1043 mediabox.y0 = 0;
1044 mediabox.x1 = 900;
1045 mediabox.y1 = 900;
1046 }
1047 if (trimf) {
1048 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1049 if (n - 1) {
1050 err (1, "fwrite trim mediabox");
1051 }
1052 }
1053 }
1054 else {
1055 if (trimf) {
1056 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1057 if (n - 1) {
1058 err (1, "fread trim mediabox");
1059 }
1060 }
1061 else {
1062 mediabox.x0 = mediabox.y0 = 0;
1063 mediabox.x1 = 900;
1064 mediabox.y1 = 900;
1065 }
1066 }
1067 }
1068 break;
1069
1070 default:
1071 ARSERT (0 && state.type);
1072 }
1073
1074 if (state.pagedimcount == 0
1075 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1076 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1077 size_t size;
1078
1079 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1080 state.pagedims = realloc (state.pagedims, size);
1081 if (!state.pagedims) {
1082 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1083 size, state.pagedimcount + 1);
1084 }
1085
1086 p = &state.pagedims[state.pagedimcount++];
1087 p->rotate = rotate;
1088 p->mediabox = mediabox;
1089 p->pageno = pageno;
1090 }
1091 }
1092 end = now ();
1093 if (state.trimmargins) {
1094 printd ("progress 1 Trimmed %d pages in %f seconds",
1095 state.pagecount, end - start);
1096 }
1097 else {
1098 printd ("vmsg Processed %d pages in %f seconds",
1099 state.pagecount, end - start);
1100 }
1101 state.trimanew = 0;
1102 if (trimf) {
1103 if (fclose (trimf)) {
1104 err (1, "fclose");
1105 }
1106 }
1107 }
1108
1109 static void layout (void)
1110 {
1111 int pindex;
1112 fz_rect box;
1113 fz_matrix ctm;
1114 double zoom, w, maxw = 0;
1115 struct pagedim *p = state.pagedims;
1116
1117 if (state.proportional) {
1118 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1119 fz_matrix rm;
1120
1121 fz_rotate (&rm, p->rotate + state.rotate);
1122 box = p->mediabox;
1123 fz_transform_rect (&box, &rm);
1124 w = box.x1 - box.x0;
1125 maxw = MAX (w, maxw);
1126 }
1127 }
1128
1129 p = state.pagedims;
1130 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1131 fz_rect rect;
1132 fz_matrix tm, sm, rm;
1133
1134 fz_rotate (&ctm, state.rotate);
1135 fz_rotate (&rm, p->rotate + state.rotate);
1136 box = p->mediabox;
1137 fz_transform_rect (&box, &rm);
1138 w = box.x1 - box.x0;
1139
1140 if (state.proportional) {
1141 double scale = w / maxw;
1142 zoom = (state.w / w) * scale;
1143 }
1144 else {
1145 zoom = state.w / w;
1146 }
1147
1148 fz_scale (&p->zoomctm, zoom, zoom);
1149 fz_concat (&ctm, &p->zoomctm, &ctm);
1150
1151 fz_rotate (&rm, p->rotate);
1152 p->pagebox = p->mediabox;
1153 fz_transform_rect (&p->pagebox, &rm);
1154 p->pagebox.x1 -= p->pagebox.x0;
1155 p->pagebox.y1 -= p->pagebox.y0;
1156 p->pagebox.x0 = 0;
1157 p->pagebox.y0 = 0;
1158 rect = p->pagebox;
1159 fz_transform_rect (&rect, &ctm);
1160 fz_round_rect (&p->bounds, &rect);
1161
1162 p->left = state.proportional ? ((maxw - w) * zoom) / 2.0 : 0;
1163 p->ctm = ctm;
1164
1165 fz_translate (&tm, 0, -p->mediabox.y1);
1166 fz_scale (&sm, zoom, -zoom);
1167 fz_concat (&ctm, &tm, &sm);
1168 fz_concat (&p->lctm, &ctm, &rm);
1169
1170 p->tctmready = 0;
1171 }
1172
1173 while (p-- != state.pagedims) {
1174 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1175 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1176 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1177 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1178 int w = x1 - x0;
1179 int h = y1 - y0;
1180
1181 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1182 }
1183 }
1184
1185 static struct anchor { int n; int y; int h; } desttoanchor (fz_link_dest *dest)
1186 {
1187 int i;
1188 struct anchor a;
1189 struct pagedim *pdim = state.pagedims;
1190
1191 a.n = -1;
1192 a.y = 0;
1193 for (i = 0; i < state.pagedimcount; ++i) {
1194 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1195 break;
1196 pdim = &state.pagedims[i];
1197 }
1198 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1199 fz_point p;
1200 p.x = 0;
1201 p.y = dest->ld.gotor.lt.y;
1202 fz_transform_point (&p, &pdim->lctm);
1203 a.y = p.y;
1204 }
1205 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1206 double y0, y1;
1207
1208 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1209 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1210 a.h = y1 - y0;
1211 a.n = dest->ld.gotor.page;
1212 }
1213 return a;
1214 }
1215
1216 static void recurse_outline (fz_outline *outline, int level)
1217 {
1218 while (outline) {
1219 struct anchor a = desttoanchor (&outline->dest);
1220
1221 if (a.n >= 0) {
1222 printd ("o %d %d %d %d %s",
1223 level, a.n, a.y, a.h, outline->title);
1224 }
1225 if (outline->down) {
1226 recurse_outline (outline->down, level + 1);
1227 }
1228 outline = outline->next;
1229 }
1230 }
1231
1232 static void process_outline (void)
1233 {
1234 fz_outline *outline;
1235
1236 if (!state.needoutline) return;
1237
1238 state.needoutline = 0;
1239 switch (state.type) {
1240 case DPDF:
1241 outline = pdf_load_outline (state.u.pdf);
1242 break;
1243 case DXPS:
1244 outline = xps_load_outline (state.u.xps);
1245 break;
1246 default:
1247 outline = NULL;
1248 break;
1249 }
1250 if (outline) {
1251 recurse_outline (outline, 0);
1252 fz_free_outline (state.ctx, outline);
1253 }
1254 }
1255
1256 static char *strofspan (fz_text_span *span)
1257 {
1258 char *p;
1259 char utf8[10];
1260 fz_text_char *ch;
1261 size_t size = 0, cap = 80;
1262
1263 p = malloc (cap + 1);
1264 if (!p) return NULL;
1265
1266 for (ch = span->text; ch < span->text + span->len; ++ch) {
1267 int n = fz_runetochar (utf8, ch->c);
1268 if (size + n > cap) {
1269 cap *= 2;
1270 p = realloc (p, cap + 1);
1271 if (!p) return NULL;
1272 }
1273
1274 memcpy (p + size, utf8, n);
1275 size += n;
1276 }
1277 p[size] = 0;
1278 return p;
1279 }
1280
1281 static int matchspan (regex_t *re, fz_text_span *span, fz_matrix ctm,
1282 int stop, int pageno, double start)
1283 {
1284 int ret;
1285 char *p;
1286 regmatch_t rm;
1287 int a, b, c;
1288 fz_rect *sb, *eb;
1289 fz_point p1, p2, p3, p4;
1290
1291 p = strofspan (span);
1292 if (!p) return -1;
1293
1294 ret = regexec (re, p, 1, &rm, 0);
1295 if (ret) {
1296 free (p);
1297 if (ret != REG_NOMATCH) {
1298 size_t size;
1299 char errbuf[80];
1300 size = regerror (ret, re, errbuf, sizeof (errbuf));
1301 printd ("msg regexec error `%.*s'",
1302 (int) size, errbuf);
1303 return -1;
1304 }
1305 return 0;
1306 }
1307 else {
1308 int l = span->len;
1309 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1310 c += fz_runelen (span->text[a].c);
1311 }
1312 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1313 c += fz_runelen (span->text[b].c);
1314 }
1315
1316 if (fz_runelen (span->text[b].c) > 1) {
1317 b = MAX (0, b-1);
1318 }
1319 sb = &span->text[MIN (a, l-1)].bbox;
1320 eb = &span->text[MIN (b, l-1)].bbox;
1321
1322 p1.x = sb->x0;
1323 p1.y = sb->y0;
1324 p2.x = eb->x1;
1325 p2.y = sb->y0;
1326 p3.x = eb->x1;
1327 p3.y = eb->y1;
1328 p4.x = sb->x0;
1329 p4.y = eb->y1;
1330
1331 if (!stop) {
1332 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1333 pageno, 1,
1334 p1.x, p1.y,
1335 p2.x, p2.y,
1336 p3.x, p3.y,
1337 p4.x, p4.y);
1338
1339 printd ("progress 1 found at %d `%.*s' in %f sec",
1340 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1341 now () - start);
1342 }
1343 else {
1344 printd ("match %d %d %f %f %f %f %f %f %f %f",
1345 pageno, 2,
1346 p1.x, p1.y,
1347 p2.x, p2.y,
1348 p3.x, p3.y,
1349 p4.x, p4.y);
1350 }
1351 free (p);
1352 return 1;
1353 }
1354 }
1355
1356 static int compareblocks (const void *l, const void *r)
1357 {
1358 fz_text_block const *ls = l;
1359 fz_text_block const* rs = r;
1360 return ls->bbox.y0 - rs->bbox.y0;
1361 }
1362
1363 /* wishful thinking function */
1364 static void search (regex_t *re, int pageno, int y, int forward)
1365 {
1366 int i, j;
1367 fz_matrix ctm;
1368 fz_device *tdev;
1369 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1370 fz_text_page *text;
1371 fz_text_sheet *sheet;
1372 struct pagedim *pdim, *pdimprev;
1373 int stop = 0, niters = 0;
1374 double start, end;
1375
1376 if (!(state.type == DPDF || state.type == DXPS))
1377 return;
1378
1379 start = now ();
1380 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1381 if (niters++ == 5) {
1382 niters = 0;
1383 if (hasdata ()) {
1384 printd ("progress 1 attention requested aborting search at %d",
1385 pageno);
1386 stop = 1;
1387 }
1388 else {
1389 printd ("progress %f searching in page %d",
1390 (double) (pageno + 1) / state.pagecount,
1391 pageno);
1392 }
1393 }
1394 pdimprev = NULL;
1395 for (i = 0; i < state.pagedimcount; ++i) {
1396 pdim = &state.pagedims[i];
1397 if (pdim->pageno == pageno) {
1398 goto found;
1399 }
1400 if (pdim->pageno > pageno) {
1401 pdim = pdimprev;
1402 goto found;
1403 }
1404 pdimprev = pdim;
1405 }
1406 pdim = pdimprev;
1407 found:
1408
1409 sheet = fz_new_text_sheet (state.ctx);
1410 text = fz_new_text_page (state.ctx, &fz_infinite_rect);
1411 tdev = fz_new_text_device (state.ctx, sheet, text);
1412
1413 switch (state.type) {
1414 case DPDF:
1415 u.ptr = NULL;
1416 fz_try (state.ctx) {
1417 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1418 trimctm (u.pdfpage, pdim - state.pagedims);
1419 fz_concat (&ctm, &pdim->tctm, &pdim->zoomctm);
1420 pdf_run_page (state.u.pdf, u.pdfpage, tdev, &ctm, NULL);
1421 }
1422 fz_catch (state.ctx) {
1423 fz_free_device (tdev);
1424 u.ptr = NULL;
1425 goto nextiter;
1426 }
1427 break;
1428
1429 case DXPS:
1430 u.xpspage = xps_load_page (state.u.xps, pageno);
1431 xps_run_page (state.u.xps, u.xpspage, tdev, &pdim->ctm, NULL);
1432 break;
1433
1434 default:
1435 ARSERT (0 && state.type);
1436 }
1437
1438 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1439 fz_free_device (tdev);
1440
1441 for (j = 0; j < text->len; ++j) {
1442 int k;
1443 fz_text_block *block;
1444
1445 block = &text->blocks[forward ? j : text->len - 1 - j];
1446
1447 for (k = 0; k < block->len; ++k) {
1448 fz_text_line *line;
1449 fz_text_span *span;
1450
1451 if (forward) {
1452 line = &block->lines[k];
1453 if (line->bbox.y0 < y + 1) continue;
1454 }
1455 else {
1456 line = &block->lines[block->len - 1 - k];
1457 if (line->bbox.y0 > y - 1) continue;
1458 }
1459
1460 for (span = line->spans;
1461 span < line->spans + line->len;
1462 ++span) {
1463
1464 switch (matchspan (re, span, ctm, stop, pageno, start)) {
1465 case 0: break;
1466 case 1: stop = 1; break;
1467 case -1: stop = 1; goto endloop;
1468 }
1469 }
1470 }
1471 }
1472 nextiter:
1473 if (forward) {
1474 pageno += 1;
1475 y = 0;
1476 }
1477 else {
1478 pageno -= 1;
1479 y = INT_MAX;
1480 }
1481 endloop:
1482 fz_free_text_page (state.ctx, text);
1483 fz_free_text_sheet (state.ctx, sheet);
1484 if (u.ptr) {
1485 state.freepage (u.ptr);
1486 }
1487 }
1488 end = now ();
1489 if (!stop) {
1490 printd ("progress 1 no matches %f sec", end - start);
1491 }
1492 printd ("clearrects");
1493 }
1494
1495 static void set_tex_params (int colorspace)
1496 {
1497 union {
1498 unsigned char b;
1499 unsigned int s;
1500 } endianness = {1};
1501
1502 switch (colorspace) {
1503 case 0:
1504 state.texiform = GL_RGBA8;
1505 state.texform = GL_RGBA;
1506 state.texty = GL_UNSIGNED_BYTE;
1507 state.colorspace = fz_device_rgb;
1508 break;
1509 case 1:
1510 state.texiform = GL_RGBA8;
1511 state.texform = GL_BGRA;
1512 state.texty = endianness.s > 1
1513 ? GL_UNSIGNED_INT_8_8_8_8
1514 : GL_UNSIGNED_INT_8_8_8_8_REV;
1515 state.colorspace = fz_device_bgr;
1516 break;
1517 case 2:
1518 state.texiform = GL_LUMINANCE_ALPHA;
1519 state.texform = GL_LUMINANCE_ALPHA;
1520 state.texty = GL_UNSIGNED_BYTE;
1521 state.colorspace = fz_device_gray;
1522 break;
1523 default:
1524 errx (1, "invalid colorspce %d", colorspace);
1525 }
1526 }
1527
1528 static void realloctexts (int texcount)
1529 {
1530 size_t size;
1531
1532 if (texcount == state.texcount) return;
1533
1534 if (texcount < state.texcount) {
1535 glDeleteTextures (state.texcount - texcount,
1536 state.texids + texcount);
1537 }
1538
1539 size = texcount * sizeof (*state.texids);
1540 state.texids = realloc (state.texids, size);
1541 if (!state.texids) {
1542 err (1, "realloc texids %" FMT_s, size);
1543 }
1544
1545 size = texcount * sizeof (*state.texowners);
1546 state.texowners = realloc (state.texowners, size);
1547 if (!state.texowners) {
1548 err (1, "realloc texowners %" FMT_s, size);
1549 }
1550 if (texcount > state.texcount) {
1551 int i;
1552
1553 glGenTextures (texcount - state.texcount,
1554 state.texids + state.texcount);
1555 for (i = state.texcount; i < texcount; ++i) {
1556 state.texowners[i].w = -1;
1557 state.texowners[i].slice = NULL;
1558 }
1559 }
1560 state.texcount = texcount;
1561 state.texindex = 0;
1562 }
1563
1564 static char *mbtoutf8 (char *s)
1565 {
1566 char *p, *r;
1567 wchar_t *tmp;
1568 size_t i, ret, len;
1569
1570 len = mbstowcs (NULL, s, strlen (s));
1571 if (len == 0) {
1572 return s;
1573 }
1574 else {
1575 if (len == (size_t) -1) {
1576 return s;
1577 }
1578 }
1579
1580 tmp = malloc (len * sizeof (wchar_t));
1581 if (!tmp) {
1582 return s;
1583 }
1584
1585 ret = mbstowcs (tmp, s, len);
1586 if (ret == (size_t) -1) {
1587 free (tmp);
1588 return s;
1589 }
1590
1591 len = 0;
1592 for (i = 0; i < ret; ++i) {
1593 len += fz_runelen (tmp[i]);
1594 }
1595
1596 p = r = malloc (len + 1);
1597 if (!r) {
1598 free (tmp);
1599 return s;
1600 }
1601
1602 for (i = 0; i < ret; ++i) {
1603 p += fz_runetochar (p, tmp[i]);
1604 }
1605 *p = 0;
1606 free (tmp);
1607 return r;
1608 }
1609
1610 CAMLprim value ml_mbtoutf8 (value s_v)
1611 {
1612 CAMLparam1 (s_v);
1613 CAMLlocal1 (ret_v);
1614 char *s, *r;
1615
1616 s = String_val (s_v);
1617 r = mbtoutf8 (s);
1618 if (r == s) {
1619 ret_v = s_v;
1620 }
1621 else {
1622 ret_v = caml_copy_string (r);
1623 free (r);
1624 }
1625 CAMLreturn (ret_v);
1626 }
1627
1628 static void * mainloop (void *unused)
1629 {
1630 char *p = NULL;
1631 int len, ret, oldlen = 0;
1632
1633 for (;;) {
1634 len = readlen ();
1635 if (len == 0) {
1636 errx (1, "readlen returned 0");
1637 }
1638
1639 if (oldlen < len + 1) {
1640 p = realloc (p, len + 1);
1641 if (!p) {
1642 err (1, "realloc %d failed", len + 1);
1643 }
1644 oldlen = len + 1;
1645 }
1646 readdata (p, len);
1647 p[len] = 0;
1648
1649 if (!strncmp ("open", p, 4)) {
1650 size_t filenamelen;
1651 int wthack, off;
1652 char *password;
1653 char *filename;
1654 char *utf8filename;
1655
1656 ret = sscanf (p + 5, " %d %n", &wthack, &off);
1657 if (ret != 1) {
1658 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1659 }
1660
1661 filename = p + 5 + off;
1662 filenamelen = strlen (filename);
1663 password = filename + filenamelen + 1;
1664
1665 lock ("open");
1666 openxref (filename, password);
1667 pdfinfo ();
1668 initpdims ();
1669 unlock ("open");
1670
1671 if (!wthack) {
1672 utf8filename = mbtoutf8 (filename);
1673 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1674 if (utf8filename != filename) {
1675 free (utf8filename);
1676 }
1677 }
1678 state.needoutline = 1;
1679 }
1680 else if (!strncmp ("cs", p, 2)) {
1681 int i, colorspace;
1682
1683 ret = sscanf (p + 2, " %d", &colorspace);
1684 if (ret != 1) {
1685 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1686 }
1687 lock ("cs");
1688 set_tex_params (colorspace);
1689 for (i = 0; i < state.texcount; ++i) {
1690 state.texowners[i].w = -1;
1691 state.texowners[i].slice = NULL;
1692 }
1693 unlock ("cs");
1694 }
1695 else if (!strncmp ("freepage", p, 8)) {
1696 void *ptr;
1697
1698 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1699 if (ret != 1) {
1700 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1701 }
1702 freepage (ptr);
1703 }
1704 else if (!strncmp ("freetile", p, 8)) {
1705 void *ptr;
1706
1707 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1708 if (ret != 1) {
1709 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1710 }
1711 freetile (ptr);
1712 }
1713 else if (!strncmp ("search", p, 6)) {
1714 int icase, pageno, y, ret, len2, forward;
1715 char *pattern;
1716 regex_t re;
1717
1718 ret = sscanf (p + 6, " %d %d %d %d,%n",
1719 &icase, &pageno, &y, &forward, &len2);
1720 if (ret != 4) {
1721 errx (1, "malformed search `%s' ret=%d", p, ret);
1722 }
1723
1724 pattern = p + 6 + len2;
1725 ret = regcomp (&re, pattern,
1726 REG_EXTENDED | (icase ? REG_ICASE : 0));
1727 if (ret) {
1728 char errbuf[80];
1729 size_t size;
1730
1731 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1732 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1733 }
1734 else {
1735 search (&re, pageno, y, forward);
1736 regfree (&re);
1737 }
1738 }
1739 else if (!strncmp ("geometry", p, 8)) {
1740 int w, h;
1741
1742 printd ("clear");
1743 ret = sscanf (p + 8, " %d %d", &w, &h);
1744 if (ret != 2) {
1745 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1746 }
1747
1748 lock ("geometry");
1749 state.h = h;
1750 if (w != state.w) {
1751 int i;
1752 state.w = w;
1753 for (i = 0; i < state.texcount; ++i) {
1754 state.texowners[i].slice = NULL;
1755 }
1756 }
1757 layout ();
1758 process_outline ();
1759
1760 state.gen++;
1761 unlock ("geometry");
1762 printd ("continue %d", state.pagecount);
1763 }
1764 else if (!strncmp ("reqlayout", p, 9)) {
1765 char *nameddest;
1766 int rotate, proportional, off;
1767
1768 printd ("clear");
1769 ret = sscanf (p + 9, " %d %d %n", &rotate, &proportional, &off);
1770 if (ret != 2) {
1771 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1772 }
1773 lock ("reqlayout");
1774 if (state.rotate != rotate || state.proportional != proportional) {
1775 state.gen += 1;
1776 }
1777 state.rotate = rotate;
1778 state.proportional = proportional;
1779 layout ();
1780 process_outline ();
1781
1782 nameddest = p + 9 + off;
1783 if (state.type == DPDF && nameddest && *nameddest) {
1784 struct anchor a;
1785 fz_link_dest dest;
1786 pdf_obj *needle, *obj;
1787
1788 needle = pdf_new_string (state.ctx, nameddest,
1789 strlen (nameddest));
1790 obj = pdf_lookup_dest (state.u.pdf, needle);
1791 if (obj) {
1792 dest = pdf_parse_link_dest (state.u.pdf, obj);
1793
1794 a = desttoanchor (&dest);
1795 if (a.n >= 0) {
1796 printd ("a %d %d %d", a.n, a.y, a.h);
1797 }
1798 else {
1799 printd ("emsg failed to parse destination `%s'\n",
1800 nameddest);
1801 }
1802 }
1803 else {
1804 printd ("emsg destination `%s' not found\n",
1805 nameddest);
1806 }
1807 pdf_drop_obj (needle);
1808 }
1809
1810 state.gen++;
1811 unlock ("reqlayout");
1812 printd ("continue %d", state.pagecount);
1813 }
1814 else if (!strncmp ("page", p, 4)) {
1815 double a, b;
1816 struct page *page;
1817 int pageno, pindex, ret;
1818
1819 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1820 if (ret != 2) {
1821 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1822 }
1823
1824 lock ("page");
1825 a = now ();
1826 page = loadpage (pageno, pindex);
1827 b = now ();
1828 unlock ("page");
1829
1830 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1831 }
1832 else if (!strncmp ("tile", p, 4)) {
1833 int x, y, w, h, ret;
1834 struct page *page;
1835 struct tile *tile;
1836 double a, b;
1837 void *data;
1838
1839 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1840 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1841 if (ret != 6) {
1842 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1843 }
1844
1845 lock ("tile");
1846 a = now ();
1847 tile = rendertile (page, x, y, w, h, data);
1848 b = now ();
1849 unlock ("tile");
1850
1851 printd ("tile %d %d %" FMT_ptr " %u %f",
1852 x, y,
1853 FMT_ptr_cast2 (tile),
1854 tile->w * tile->h * tile->pixmap->n,
1855 b - a);
1856 }
1857 else if (!strncmp ("settrim", p, 7)) {
1858 int trimmargins;
1859 fz_irect fuzz;
1860
1861 ret = sscanf (p + 7, " %d %d %d %d %d", &trimmargins,
1862 &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1863 if (ret != 5) {
1864 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1865 }
1866 printd ("clear");
1867 lock ("settrim");
1868 state.trimmargins = trimmargins;
1869 state.needoutline = 1;
1870 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1871 state.trimanew = 1;
1872 state.trimfuzz = fuzz;
1873 }
1874 state.pagedimcount = 0;
1875 free (state.pagedims);
1876 state.pagedims = NULL;
1877 initpdims ();
1878 layout ();
1879 process_outline ();
1880 unlock ("settrim");
1881 printd ("continue %d", state.pagecount);
1882 }
1883 else if (!strncmp ("sliceh", p, 6)) {
1884 int h;
1885
1886 ret = sscanf (p + 6, " %d", &h);
1887 if (ret != 1) {
1888 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1889 }
1890 if (h != state.sliceheight) {
1891 int i;
1892
1893 state.sliceheight = h;
1894 for (i = 0; i < state.texcount; ++i) {
1895 state.texowners[i].w = -1;
1896 state.texowners[i].h = -1;
1897 state.texowners[i].slice = NULL;
1898 }
1899 }
1900 }
1901 else if (!strncmp ("interrupt", p, 9)) {
1902 printd ("vmsg interrupted");
1903 }
1904 else {
1905 errx (1, "unknown command %.*s", len, p);
1906 }
1907 }
1908 return 0;
1909 }
1910
1911 CAMLprim value ml_realloctexts (value texcount_v)
1912 {
1913 CAMLparam1 (texcount_v);
1914 int ok;
1915
1916 if (trylock ("ml_realloctexts")) {
1917 ok = 0;
1918 goto done;
1919 }
1920 realloctexts (Int_val (texcount_v));
1921 ok = 1;
1922 unlock ("ml_realloctexts");
1923
1924 done:
1925 CAMLreturn (Val_bool (ok));
1926 }
1927
1928 static void showsel (struct page *page, int ox, int oy)
1929 {
1930 int seen = 0;
1931 fz_irect bbox;
1932 fz_rect rect;
1933 fz_text_line *line;
1934 fz_text_span *span;
1935 fz_text_block *block;
1936 struct mark first, last;
1937
1938 first = page->fmark;
1939 last = page->lmark;
1940
1941 if (!first.span || !last.span) return;
1942
1943 glEnable (GL_BLEND);
1944 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
1945 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
1946
1947 ox += state.pagedims[page->pdimno].bounds.x0;
1948 oy += state.pagedims[page->pdimno].bounds.y0;
1949 for (block = page->text->blocks;
1950 block < page->text->blocks + page->text->len;
1951 ++block) {
1952 for (line = block->lines;
1953 line < block->lines + block->len;
1954 ++line) {
1955 rect = fz_empty_rect;
1956 for (span = line->spans;
1957 span < line->spans + line->len;
1958 ++span) {
1959 int i, j, k;
1960
1961 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
1962
1963 j = 0;
1964 k = span->len - 1;
1965
1966 if (span == page->fmark.span && span == page->lmark.span) {
1967 seen = 1;
1968 j = MIN (first.i, last.i);
1969 k = MAX (first.i, last.i);
1970 }
1971 else if (span == first.span) {
1972 seen = 1;
1973 j = first.i;
1974 }
1975 else if (span == last.span) {
1976 seen = 1;
1977 k = last.i;
1978 }
1979
1980 if (seen) {
1981 for (i = j; i <= k; ++i) {
1982 fz_union_rect (&rect, &span->text[i].bbox);
1983 }
1984 fz_round_rect (&bbox, &rect);
1985 lprintf ("%d %d %d %d oy=%d ox=%d\n",
1986 bbox.x0,
1987 bbox.y0,
1988 bbox.x1,
1989 bbox.y1,
1990 oy, ox);
1991
1992 glRecti (bbox.x0 + ox, bbox.y0 + oy,
1993 bbox.x1 + ox, bbox.y1 + oy);
1994 if (span == last.span) {
1995 goto done;
1996 }
1997 }
1998 }
1999 }
2000 }
2001 done:
2002 glDisable (GL_BLEND);
2003 }
2004
2005 #include "glfont.c"
2006
2007 static void highlightlinks (struct page *page, int xoff, int yoff)
2008 {
2009 fz_matrix ctm, tm, pm;
2010 fz_link *link, *links;
2011
2012 switch (page->type) {
2013 case DPDF:
2014 links = page->u.pdfpage->links;
2015 break;
2016
2017 case DXPS:
2018 links = page->u.xpspage->links;
2019 break;
2020
2021 default:
2022 return;
2023 }
2024
2025 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2026 glEnable (GL_LINE_STIPPLE);
2027 glLineStipple (0.5, 0xcccc);
2028
2029 xoff -= state.pagedims[page->pdimno].bounds.x0;
2030 yoff -= state.pagedims[page->pdimno].bounds.y0;
2031 fz_translate (&tm, xoff, yoff);
2032 pm = pagectm (page);
2033 fz_concat (&ctm, &pm, &tm);
2034
2035 glBegin (GL_QUADS);
2036 for (link = links; link; link = link->next) {
2037 fz_point p1, p2, p3, p4;
2038
2039 p1.x = link->rect.x0;
2040 p1.y = link->rect.y0;
2041
2042 p2.x = link->rect.x1;
2043 p2.y = link->rect.y0;
2044
2045 p3.x = link->rect.x1;
2046 p3.y = link->rect.y1;
2047
2048 p4.x = link->rect.x0;
2049 p4.y = link->rect.y1;
2050
2051 fz_transform_point (&p1, &ctm);
2052 fz_transform_point (&p2, &ctm);
2053 fz_transform_point (&p3, &ctm);
2054 fz_transform_point (&p4, &ctm);
2055
2056 switch (link->dest.kind) {
2057 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2058 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2059 default: glColor3ub (0, 0, 0); break;
2060 }
2061
2062 glVertex2f (p1.x, p1.y);
2063 glVertex2f (p2.x, p2.y);
2064 glVertex2f (p3.x, p3.y);
2065 glVertex2f (p4.x, p4.y);
2066 }
2067 glEnd ();
2068
2069 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2070 glDisable (GL_LINE_STIPPLE);
2071 }
2072
2073 static int compareslinks (const void *l, const void *r)
2074 {
2075 struct slink const *ls = l;
2076 struct slink const *rs = r;
2077 if (ls->bbox.y0 == rs->bbox.y0) {
2078 return rs->bbox.x0 - rs->bbox.x0;
2079 }
2080 return ls->bbox.y0 - rs->bbox.y0;
2081 }
2082
2083 static void droptext (struct page *page)
2084 {
2085 if (page->text) {
2086 fz_free_text_page (state.ctx, page->text);
2087 page->fmark.i = -1;
2088 page->lmark.i = -1;
2089 page->fmark.span = NULL;
2090 page->lmark.span = NULL;
2091 page->text = NULL;
2092 }
2093 if (page->sheet) {
2094 fz_free_text_sheet (state.ctx, page->sheet);
2095 }
2096 }
2097
2098 static void dropslinks (struct page *page)
2099 {
2100 if (page->slinks) {
2101 free (page->slinks);
2102 page->slinks = NULL;
2103 page->slinkcount = 0;
2104 }
2105 }
2106
2107 static void ensureslinks (struct page *page)
2108 {
2109 fz_matrix ctm;
2110 int i, count = 0;
2111 size_t slinksize = sizeof (*page->slinks);
2112 fz_link *link, *links;
2113
2114 if (state.gen != page->sgen) {
2115 dropslinks (page);
2116 page->sgen = state.gen;
2117 }
2118 if (page->slinks) return;
2119
2120 switch (page->type) {
2121 case DPDF:
2122 links = page->u.pdfpage->links;
2123 ctm = trimctm (page->u.pdfpage, page->pdimno);
2124 fz_concat (&ctm, &ctm, &state.pagedims[page->pdimno].ctm);
2125 break;
2126
2127 case DXPS:
2128 links = page->u.xpspage->links;
2129 ctm = state.pagedims[page->pdimno].ctm;
2130 break;
2131
2132 default:
2133 return;
2134 }
2135
2136 for (link = links; link; link = link->next) {
2137 count++;
2138 }
2139 if (count > 0) {
2140 page->slinkcount = count;
2141 page->slinks = calloc (count, slinksize);
2142 if (!page->slinks) {
2143 err (1, "realloc slinks %d", count);
2144 }
2145
2146 for (i = 0, link = links; link; ++i, link = link->next) {
2147 fz_rect rect;
2148
2149 rect = link->rect;
2150 fz_transform_rect (&rect, &ctm);
2151 page->slinks[i].link = link;
2152 fz_round_rect (&page->slinks[i].bbox, &rect);
2153 }
2154 qsort (page->slinks, count, slinksize, compareslinks);
2155 }
2156 }
2157
2158 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2159 static void fmt_linkn (char *s, unsigned int u)
2160 {
2161 unsigned int len; unsigned int q;
2162 int zma = 'z' - 'a' + 1;
2163 len = 1; q = u;
2164 while (q > zma - 1) { ++len; q /= zma; }
2165 if (s) {
2166 s += len;
2167 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2168 /* handles u == 0 */
2169 }
2170 s[len] = 0;
2171 }
2172
2173 static void highlightslinks (struct page *page, int xoff, int yoff,
2174 int noff, char *targ, int tlen, int hfsize)
2175 {
2176 int i;
2177 char buf[40];
2178 struct slink *slink;
2179 double x0, y0, x1, y1, w;
2180
2181 ensureslinks (page);
2182 glColor3ub (0xc3, 0xb0, 0x91);
2183 for (i = 0; i < page->slinkcount; ++i) {
2184 fmt_linkn (buf, i + noff);
2185 if (!tlen || !strncmp (targ, buf, tlen)) {
2186 slink = &page->slinks[i];
2187
2188 x0 = slink->bbox.x0 + xoff - 5;
2189 y1 = slink->bbox.y0 + yoff - 5;
2190 y0 = y1 + 10 + hfsize;
2191 w = measure_string (state.face, hfsize, buf);
2192 x1 = x0 + w + 10;
2193 glRectd (x0, y0, x1, y1);
2194 }
2195 }
2196
2197 glEnable (GL_BLEND);
2198 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2199 glEnable (GL_TEXTURE_2D);
2200 glColor3ub (0, 0, 0);
2201 for (i = 0; i < page->slinkcount; ++i) {
2202 fmt_linkn (buf, i + noff);
2203 if (!tlen || !strncmp (targ, buf, tlen)) {
2204 slink = &page->slinks[i];
2205
2206 x0 = slink->bbox.x0 + xoff;
2207 y0 = slink->bbox.y0 + yoff + hfsize;
2208 draw_string (state.face, hfsize, x0, y0, buf);
2209 }
2210 }
2211 glDisable (GL_TEXTURE_2D);
2212 glDisable (GL_BLEND);
2213 }
2214
2215
2216 static void uploadslice (struct tile *tile, struct slice *slice)
2217 {
2218 int offset;
2219 struct slice *slice1;
2220 unsigned char *texdata;
2221
2222 offset = 0;
2223 for (slice1 = tile->slices; slice != slice1; slice1++) {
2224 offset += slice1->h * tile->w * tile->pixmap->n;
2225 }
2226 if (slice->texindex != -1 && slice->texindex < state.texcount
2227 && state.texowners[slice->texindex].slice == slice) {
2228 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2229 }
2230 else {
2231 int subimage = 0;
2232 int texindex = state.texindex++ % state.texcount;
2233
2234 if (state.texowners[texindex].w == tile->w) {
2235 if (state.texowners[texindex].h >= slice->h) {
2236 subimage = 1;
2237 }
2238 else {
2239 state.texowners[texindex].h = slice->h;
2240 }
2241 }
2242 else {
2243 state.texowners[texindex].h = slice->h;
2244 }
2245
2246 state.texowners[texindex].w = tile->w;
2247 state.texowners[texindex].slice = slice;
2248 slice->texindex = texindex;
2249
2250 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2251 if (tile->pbo) {
2252 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2253 texdata = 0;
2254 }
2255 else {
2256 texdata = tile->pixmap->samples;
2257 }
2258 if (subimage) {
2259 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2260 0,
2261 0,
2262 0,
2263 tile->w,
2264 slice->h,
2265 state.texform,
2266 state.texty,
2267 texdata+offset
2268 );
2269 }
2270 else {
2271 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2272 0,
2273 state.texiform,
2274 tile->w,
2275 slice->h,
2276 0,
2277 state.texform,
2278 state.texty,
2279 texdata+offset
2280 );
2281 }
2282 if (tile->pbo) {
2283 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2284 }
2285 }
2286 }
2287
2288 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2289 {
2290 CAMLparam2 (args_v, ptr_v);
2291 int dispx = Int_val (Field (args_v, 0));
2292 int dispy = Int_val (Field (args_v, 1));
2293 int dispw = Int_val (Field (args_v, 2));
2294 int disph = Int_val (Field (args_v, 3));
2295 int tilex = Int_val (Field (args_v, 4));
2296 int tiley = Int_val (Field (args_v, 5));
2297 char *s = String_val (ptr_v);
2298 struct tile *tile = parse_pointer ("ml_drawtile", s);
2299
2300 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2301 {
2302 int slicey, firstslice;
2303 struct slice *slice;
2304
2305 firstslice = tiley / tile->sliceheight;
2306 slice = &tile->slices[firstslice];
2307 slicey = tiley % tile->sliceheight;
2308
2309 while (disph > 0) {
2310 int dh;
2311
2312 dh = slice->h - slicey;
2313 dh = MIN (disph, dh);
2314 uploadslice (tile, slice);
2315
2316 glBegin (GL_QUADS);
2317 {
2318 glTexCoord2i (tilex, slicey);
2319 glVertex2i (dispx, dispy);
2320
2321 glTexCoord2i (tilex+dispw, slicey);
2322 glVertex2i (dispx+dispw, dispy);
2323
2324 glTexCoord2i (tilex+dispw, slicey+dh);
2325 glVertex2i (dispx+dispw, dispy+dh);
2326
2327 glTexCoord2i (tilex, slicey+dh);
2328 glVertex2i (dispx, dispy+dh);
2329 }
2330 glEnd ();
2331
2332 dispy += dh;
2333 disph -= dh;
2334 slice++;
2335 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2336 slicey = 0;
2337 }
2338 }
2339 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2340 CAMLreturn (Val_unit);
2341 }
2342
2343 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2344 value xoff_v, value yoff_v,
2345 value li_v)
2346 {
2347 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2348 int xoff = Int_val (xoff_v);
2349 int yoff = Int_val (yoff_v);
2350 int noff = Int_val (Field (li_v, 0));
2351 char *targ = String_val (Field (li_v, 1));
2352 int tlen = caml_string_length (Field (li_v, 1));
2353 int hfsize = Int_val (Field (li_v, 2));
2354 char *s = String_val (ptr_v);
2355 int hlmask = Int_val (hlinks_v);
2356 struct page *page = parse_pointer ("ml_postprocess", s);
2357
2358 if (!page->u.ptr) {
2359 /* deal with loadpage failed pages */
2360 goto done;
2361 }
2362
2363 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2364 if (trylock ("ml_postprocess")) {
2365 noff = 0;
2366 goto done;
2367 }
2368 if (hlmask & 2) {
2369 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2370 noff = page->slinkcount;
2371 }
2372 showsel (page, xoff, yoff);
2373 unlock ("ml_postprocess");
2374
2375 done:
2376 CAMLreturn (Val_int (noff));
2377 }
2378
2379 static fz_link *getlink (struct page *page, int x, int y)
2380 {
2381 fz_point p;
2382 fz_matrix ctm;
2383 fz_link *link, *links;
2384
2385 switch (page->type) {
2386 case DPDF:
2387 ctm = trimctm (page->u.pdfpage, page->pdimno);
2388 links = page->u.pdfpage->links;
2389 break;
2390
2391 case DXPS:
2392 ctm = fz_identity;
2393 links = page->u.xpspage->links;
2394 break;
2395
2396 default:
2397 return NULL;
2398 }
2399 p.x = x;
2400 p.y = y;
2401
2402 fz_concat (&ctm, &ctm, &state.pagedims[page->pdimno].ctm);
2403 fz_invert_matrix (&ctm, &ctm);
2404 fz_transform_point (&p, &ctm);
2405
2406 for (link = links; link; link = link->next) {
2407 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2408 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2409 return link;
2410 }
2411 }
2412 }
2413 return NULL;
2414 }
2415
2416 static void ensuretext (struct page *page)
2417 {
2418 if (state.gen != page->tgen) {
2419 droptext (page);
2420 page->tgen = state.gen;
2421 }
2422 if (!page->text) {
2423 fz_matrix ctm;
2424 fz_device *tdev;
2425
2426 page->text = fz_new_text_page (state.ctx, &fz_infinite_rect);
2427 page->sheet = fz_new_text_sheet (state.ctx);
2428 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2429 ctm = pagectm (page);
2430 fz_run_display_list (page->dlist, tdev, &ctm, &fz_infinite_rect, NULL);
2431 qsort (page->text->blocks, page->text->len,
2432 sizeof (*page->text->blocks), compareblocks);
2433 fz_free_device (tdev);
2434 }
2435 }
2436
2437 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2438 {
2439 CAMLparam2 (start_page_v, dir_v);
2440 CAMLlocal1 (ret_v);
2441 int i, dir = Int_val (dir_v);
2442 int start_page = Int_val (start_page_v);
2443 int end_page = dir > 0 ? state.pagecount : -1;
2444
2445 ret_v = Val_int (0);
2446 if (!(state.type == DPDF || state.type == DXPS)) {
2447 goto done;
2448 }
2449
2450 lock ("ml_findpage_with_links");
2451 for (i = start_page + dir; i != end_page; i += dir) {
2452 int found;
2453
2454 switch (state.type) {
2455 case DPDF:
2456 {
2457 pdf_page *page = NULL;
2458
2459 fz_try (state.ctx) {
2460 page = pdf_load_page (state.u.pdf, i);
2461 found = !!page->links;
2462 }
2463 fz_catch (state.ctx) {
2464 found = 0;
2465 }
2466 if (page) {
2467 freepdfpage (page);
2468 }
2469 }
2470 break;
2471 case DXPS:
2472 {
2473 xps_page *page = xps_load_page (state.u.xps, i);
2474 found = !!page->links;
2475 freexpspage (page);
2476 }
2477 break;
2478
2479 default:
2480 ARSERT ("invalid document type");
2481 }
2482
2483 if (found) {
2484 ret_v = caml_alloc_small (1, 1);
2485 Field (ret_v, 0) = Val_int (i);
2486 goto unlock;
2487 }
2488 }
2489 unlock:
2490 unlock ("ml_findpage_with_links");
2491
2492 done:
2493 CAMLreturn (ret_v);
2494 }
2495
2496 enum { dir_first, dir_last};
2497 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2498
2499 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2500 {
2501 CAMLparam2 (ptr_v, dir_v);
2502 CAMLlocal2 (ret_v, pos_v);
2503 struct page *page;
2504 int dirtag, i, slinkindex;
2505 struct slink *found = NULL ,*slink;
2506 char *s = String_val (ptr_v);
2507
2508 page = parse_pointer ("ml_findlink", s);
2509 ret_v = Val_int (0);
2510 if (trylock ("ml_findlink")) {
2511 goto done;
2512 }
2513
2514 ensureslinks (page);
2515
2516 if (Is_block (dir_v)) {
2517 dirtag = Tag_val (dir_v);
2518 switch (dirtag) {
2519 case dir_first_visible:
2520 {
2521 int x0, y0, dir, first_index, last_index;
2522
2523 pos_v = Field (dir_v, 0);
2524 x0 = Int_val (Field (pos_v, 0));
2525 y0 = Int_val (Field (pos_v, 1));
2526 dir = Int_val (Field (pos_v, 2));
2527
2528 if (dir >= 0) {
2529 dir = 1;
2530 first_index = 0;
2531 last_index = page->slinkcount;
2532 }
2533 else {
2534 first_index = page->slinkcount - 1;
2535 last_index = -1;
2536 }
2537
2538 for (i = first_index; i != last_index; i += dir) {
2539 slink = &page->slinks[i];
2540 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2541 found = slink;
2542 break;
2543 }
2544 }
2545 }
2546 break;
2547
2548 case dir_left:
2549 slinkindex = Int_val (Field (dir_v, 0));
2550 found = &page->slinks[slinkindex];
2551 for (i = slinkindex - 1; i >= 0; --i) {
2552 slink = &page->slinks[i];
2553 if (slink->bbox.x0 < found->bbox.x0) {
2554 found = slink;
2555 break;
2556 }
2557 }
2558 break;
2559
2560 case dir_right:
2561 slinkindex = Int_val (Field (dir_v, 0));
2562 found = &page->slinks[slinkindex];
2563 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2564 slink = &page->slinks[i];
2565 if (slink->bbox.x0 > found->bbox.x0) {
2566 found = slink;
2567 break;
2568 }
2569 }
2570 break;
2571
2572 case dir_down:
2573 slinkindex = Int_val (Field (dir_v, 0));
2574 found = &page->slinks[slinkindex];
2575 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2576 slink = &page->slinks[i];
2577 if (slink->bbox.y0 >= found->bbox.y0) {
2578 found = slink;
2579 break;
2580 }
2581 }
2582 break;
2583
2584 case dir_up:
2585 slinkindex = Int_val (Field (dir_v, 0));
2586 found = &page->slinks[slinkindex];
2587 for (i = slinkindex - 1; i >= 0; --i) {
2588 slink = &page->slinks[i];
2589 if (slink->bbox.y0 <= found->bbox.y0) {
2590 found = slink;
2591 break;
2592 }
2593 }
2594 break;
2595 }
2596 }
2597 else {
2598 dirtag = Int_val (dir_v);
2599 switch (dirtag) {
2600 case dir_first:
2601 found = page->slinks;
2602 break;
2603
2604 case dir_last:
2605 if (page->slinks) {
2606 found = page->slinks + (page->slinkcount - 1);
2607 }
2608 break;
2609 }
2610 }
2611 if (found) {
2612 ret_v = caml_alloc_small (2, 1);
2613 Field (ret_v, 0) = Val_int (found - page->slinks);
2614 }
2615
2616 unlock ("ml_findlink");
2617 done:
2618 CAMLreturn (ret_v);
2619 }
2620
2621 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2622
2623 #define LINKTOVAL \
2624 { \
2625 int pageno; \
2626 \
2627 switch (link->dest.kind) { \
2628 case FZ_LINK_GOTO: \
2629 { \
2630 fz_point p; \
2631 \
2632 pageno = link->dest.ld.gotor.page; \
2633 p.x = 0; \
2634 p.y = 0; \
2635 \
2636 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2637 p.y = link->dest.ld.gotor.lt.y; \
2638 fz_transform_point (&p, &pdim->lctm); \
2639 } \
2640 tup_v = caml_alloc_tuple (2); \
2641 ret_v = caml_alloc_small (1, ugoto); \
2642 Field (tup_v, 0) = Val_int (pageno); \
2643 Field (tup_v, 1) = Val_int (p.y); \
2644 Field (ret_v, 0) = tup_v; \
2645 } \
2646 break; \
2647 \
2648 case FZ_LINK_URI: \
2649 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2650 ret_v = caml_alloc_small (1, uuri); \
2651 Field (ret_v, 0) = str_v; \
2652 break; \
2653 \
2654 case FZ_LINK_LAUNCH: \
2655 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2656 ret_v = caml_alloc_small (1, ulaunch); \
2657 Field (ret_v, 0) = str_v; \
2658 break; \
2659 \
2660 case FZ_LINK_NAMED: \
2661 str_v = caml_copy_string (link->dest.ld.named.named); \
2662 ret_v = caml_alloc_small (1, unamed); \
2663 Field (ret_v, 0) = str_v; \
2664 break; \
2665 \
2666 case FZ_LINK_GOTOR: \
2667 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2668 pageno = link->dest.ld.gotor.page; \
2669 tup_v = caml_alloc_tuple (2); \
2670 ret_v = caml_alloc_small (1, uremote); \
2671 Field (tup_v, 0) = str_v; \
2672 Field (tup_v, 1) = Val_int (pageno); \
2673 Field (ret_v, 0) = tup_v; \
2674 break; \
2675 \
2676 default: \
2677 { \
2678 char buf[80]; \
2679 \
2680 snprintf (buf, sizeof (buf), \
2681 "unhandled link kind %d", link->dest.kind); \
2682 str_v = caml_copy_string (buf); \
2683 ret_v = caml_alloc_small (1, uunexpected); \
2684 Field (ret_v, 0) = str_v; \
2685 } \
2686 break; \
2687 } \
2688 }
2689
2690 CAMLprim value ml_getlink (value ptr_v, value n_v)
2691 {
2692 CAMLparam2 (ptr_v, n_v);
2693 CAMLlocal3 (ret_v, tup_v, str_v);
2694 fz_link *link;
2695 struct page *page;
2696 struct pagedim *pdim;
2697 char *s = String_val (ptr_v);
2698
2699 ret_v = Val_int (0);
2700 if (trylock ("ml_getlink")) {
2701 goto done;
2702 }
2703
2704 page = parse_pointer ("ml_getlink", s);
2705 ensureslinks (page);
2706 pdim = &state.pagedims[page->pdimno];
2707 link = page->slinks[Int_val (n_v)].link;
2708 LINKTOVAL;
2709
2710 unlock ("ml_getlink");
2711 done:
2712 CAMLreturn (ret_v);
2713 }
2714
2715 CAMLprim value ml_getlinkcount (value ptr_v)
2716 {
2717 CAMLparam1 (ptr_v);
2718 struct page *page;
2719 char *s = String_val (ptr_v);
2720
2721 page = parse_pointer ("ml_getlinkcount", s);
2722 CAMLreturn (Val_int (page->slinkcount));
2723 }
2724
2725 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2726 {
2727 CAMLparam2 (ptr_v, n_v);
2728 CAMLlocal1 (ret_v);
2729 struct page *page;
2730 struct slink *slink;
2731 char *s = String_val (ptr_v);
2732
2733 page = parse_pointer ("ml_getlinkrect", s);
2734 ret_v = caml_alloc_tuple (4);
2735 if (trylock ("ml_getlinkrect")) {
2736 Field (ret_v, 0) = Val_int (0);
2737 Field (ret_v, 1) = Val_int (0);
2738 Field (ret_v, 2) = Val_int (0);
2739 Field (ret_v, 3) = Val_int (0);
2740 goto done;
2741 }
2742 ensureslinks (page);
2743
2744 slink = &page->slinks[Int_val (n_v)];
2745 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2746 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2747 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2748 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2749 unlock ("ml_getlinkrect");
2750
2751 done:
2752 CAMLreturn (ret_v);
2753 }
2754
2755 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2756 {
2757 CAMLparam3 (ptr_v, x_v, y_v);
2758 CAMLlocal3 (ret_v, tup_v, str_v);
2759 fz_link *link;
2760 struct page *page;
2761 char *s = String_val (ptr_v);
2762 int x = Int_val (x_v), y = Int_val (y_v);
2763 struct pagedim *pdim;
2764
2765 ret_v = Val_int (0);
2766 if (trylock ("ml_whatsunder")) {
2767 goto done;
2768 }
2769
2770 page = parse_pointer ("ml_whatsunder", s);
2771 pdim = &state.pagedims[page->pdimno];
2772 x += pdim->bounds.x0;
2773 y += pdim->bounds.y0;
2774 link = getlink (page, x, y);
2775 if (link) {
2776 LINKTOVAL;
2777 }
2778 else {
2779 fz_rect *b;
2780 fz_text_block *block;
2781
2782 ensuretext (page);
2783 for (block = page->text->blocks;
2784 block < page->text->blocks + page->text->len;
2785 ++block) {
2786 fz_text_line *line;
2787
2788 b = &block->bbox;
2789 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2790 continue;
2791
2792 for (line = block->lines;
2793 line < block->lines + block->len;
2794 ++line) {
2795 fz_text_span *span;
2796
2797 b = &line->bbox;
2798 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2799 continue;
2800
2801 for (span = line->spans;
2802 span < line->spans + line->len;
2803 ++span) {
2804 fz_text_char *ch;
2805
2806 b = &span->bbox;
2807 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2808 continue;
2809
2810 for (ch = span->text; ch < span->text + span->len; ++ch) {
2811 b = &ch->bbox;
2812
2813 if (x >= b->x0 && x <= b->x1
2814 && y >= b->y0 && y <= b->y1) {
2815 const char *n2 =
2816 span->style->font && span->style->font->name
2817 ? span->style->font->name
2818 : "Span has no font name"
2819 ;
2820 FT_FaceRec *face = span->style->font->ft_face;
2821 if (face && face->family_name) {
2822 char *s;
2823 char *n1 = face->family_name;
2824 size_t l1 = strlen (n1);
2825 size_t l2 = strlen (n2);
2826
2827 if (l1 != l2 || memcmp (n1, n2, l1)) {
2828 s = malloc (l1 + l2 + 2);
2829 if (s) {
2830 memcpy (s, n2, l2);
2831 s[l2] = '=';
2832 memcpy (s + l2 + 1, n1, l1 + 1);
2833 str_v = caml_copy_string (s);
2834 free (s);
2835 }
2836 }
2837 }
2838 if (str_v == 0) {
2839 str_v = caml_copy_string (n2);
2840 }
2841 ret_v = caml_alloc_small (1, utext);
2842 Field (ret_v, 0) = str_v;
2843 goto unlock;
2844 }
2845 }
2846 }
2847 }
2848 }
2849 }
2850 unlock:
2851 unlock ("ml_whatsunder");
2852
2853 done:
2854 CAMLreturn (ret_v);
2855 }
2856
2857 CAMLprim value ml_seltext (value ptr_v, value rect_v)
2858 {
2859 CAMLparam2 (ptr_v, rect_v);
2860 fz_rect *b;
2861 struct page *page;
2862 struct pagedim *pdim;
2863 int i, x0, x1, y0, y1;
2864 char *s = String_val (ptr_v);
2865 int fi = 0, li = 0;
2866 fz_text_block *block;
2867 fz_text_span *span, *fspan, *lspan;
2868 fz_text_line *line, *fline = NULL, *lline = NULL;
2869
2870 if (trylock ("ml_seltext")) {
2871 goto done;
2872 }
2873
2874 page = parse_pointer ("ml_seltext", s);
2875 ensuretext (page);
2876
2877 pdim = &state.pagedims[page->pdimno];
2878 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
2879 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
2880 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
2881 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
2882
2883 if (0) {
2884 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2885 glColor3ub (128, 128, 128);
2886 glRecti (x0, y0, x1, y1);
2887 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2888 }
2889
2890 fspan = lspan = NULL;
2891
2892 for (block = page->text->blocks;
2893 block < page->text->blocks + page->text->len;
2894 ++block) {
2895 for (line = block->lines;
2896 line < block->lines + block->len;
2897 ++line) {
2898 for (span = line->spans;
2899 span < line->spans + line->len;
2900 ++span) {
2901 for (i = 0; i < span->len; ++i) {
2902 b = &span->text[i].bbox;
2903 int selected = 0;
2904
2905 if (x0 >= b->x0 && x0 <= b->x1
2906 && y0 >= b->y0 && y0 <= b->y1) {
2907 fspan = span;
2908 fline = line;
2909 fi = i;
2910 selected = 1;
2911 }
2912 if (x1 >= b->x0 && x1 <= b->x1
2913 && y1 >= b->y0 && y1 <= b->y1) {
2914 lspan = span;
2915 lline = line;
2916 li = i;
2917 selected = 1;
2918 }
2919 if (0 && selected) {
2920 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2921 glColor3ub (128, 128, 128);
2922 glRecti (b->x0, b->y0, b->x1, b->y1);
2923 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2924 }
2925 }
2926 }
2927 }
2928 }
2929 if (y1 < y0 || x1 < x0) {
2930 int swap = 0;
2931
2932 if (fspan == lspan) {
2933 swap = 1;
2934 }
2935 else {
2936 if (y1 < y0) {
2937 if (fline != lline) {
2938 swap = 1;
2939 }
2940 }
2941 }
2942
2943 if (swap) {
2944 i = fi;
2945 span = fspan;
2946
2947 fi = li;
2948 fspan = lspan;
2949
2950 li = i;
2951 lspan = span;
2952 }
2953 }
2954
2955 page->fmark.i = fi;
2956 page->fmark.span = fspan;
2957
2958 page->lmark.i = li;
2959 page->lmark.span = lspan;
2960
2961 unlock ("ml_seltext");
2962
2963 done:
2964 CAMLreturn (Val_unit);
2965 }
2966
2967 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
2968 {
2969 char buf[4];
2970 int i, len, ret;
2971
2972 for (i = a; i <= b; ++i) {
2973 len = fz_runetochar (buf, span->text[i].c);
2974 ret = fwrite (buf, len, 1, f);
2975
2976 if (ret != 1) {
2977 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
2978 len, ret, strerror (errno));
2979 return -1;
2980 }
2981 }
2982 return 0;
2983 }
2984
2985 #ifdef __CYGWIN__
2986 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
2987 {
2988 caml_failwith ("ml_popen not implemented under Cygwin");
2989 }
2990 #else
2991 CAMLprim value ml_popen (value command_v, value fds_v)
2992 {
2993 CAMLparam2 (command_v, fds_v);
2994 CAMLlocal2 (l_v, tup_v);
2995 int ret;
2996 char *msg = NULL;
2997 value earg_v = Nothing;
2998 posix_spawnattr_t attr;
2999 posix_spawn_file_actions_t fa;
3000 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
3001
3002 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3003 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3004 }
3005
3006 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3007 msg = "posix_spawnattr_init";
3008 goto fail1;
3009 }
3010
3011 #ifdef POSIX_SPAWN_USEVFORK
3012 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3013 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3014 goto fail;
3015 }
3016 #endif
3017
3018 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3019 int fd1, fd2;
3020
3021 tup_v = Field (l_v, 0);
3022 fd1 = Int_val (Field (tup_v, 0));
3023 fd2 = Int_val (Field (tup_v, 1));
3024 if (fd2 < 0) {
3025 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3026 msg = "posix_spawn_file_actions_addclose";
3027 earg_v = tup_v;
3028 goto fail;
3029 }
3030 }
3031 else {
3032 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3033 msg = "posix_spawn_file_actions_adddup2";
3034 earg_v = tup_v;
3035 goto fail;
3036 }
3037 }
3038 }
3039
3040 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
3041 msg = "posix_spawn";
3042 goto fail;
3043 }
3044
3045 fail:
3046 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3047 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3048 }
3049
3050 fail1:
3051 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3052 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3053 strerror (ret));
3054 }
3055
3056 if (msg)
3057 unix_error (ret, msg, earg_v);
3058
3059 CAMLreturn (Val_unit);
3060 }
3061 #endif
3062
3063 CAMLprim value ml_copysel (value fd_v, value ptr_v)
3064 {
3065 CAMLparam1 (ptr_v);
3066 FILE *f;
3067 int seen = 0;
3068 struct page *page;
3069 fz_text_line *line;
3070 fz_text_span *span;
3071 fz_text_block *block;
3072 int fd = Int_val (fd_v);
3073 char *s = String_val (ptr_v);
3074
3075 if (trylock ("ml_copysel")) {
3076 goto done;
3077 }
3078
3079 page = parse_pointer ("ml_sopysel", s);
3080
3081 if (!page->fmark.span || !page->lmark.span) {
3082 fprintf (stderr, "nothing to copy\n");
3083 goto unlock;
3084 }
3085
3086 f = fdopen (fd, "w");
3087 if (!f) {
3088 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3089 strerror (errno));
3090 f = stdout;
3091 }
3092
3093 for (block = page->text->blocks;
3094 block < page->text->blocks + page->text->len;
3095 ++block) {
3096 for (line = block->lines;
3097 line < block->lines + block->len;
3098 ++line) {
3099 for (span = line->spans;
3100 span < line->spans + line->len;
3101 ++span) {
3102 int a, b;
3103
3104 seen |= span == page->fmark.span || span == page->lmark.span;
3105 a = span == page->fmark.span ? page->fmark.i : 0;
3106 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3107
3108 if (seen) {
3109 if (pipespan (f, span, a, b)) {
3110 goto close;
3111 }
3112 if (span == line->spans + line->len - 1) {
3113 if (putc ('\n', f) == EOF) {
3114 fprintf (stderr,
3115 "failed break line on sel pipe: %s\n",
3116 strerror (errno));
3117 goto close;
3118 }
3119 }
3120 if (span == page->lmark.span) {
3121 goto endloop;
3122 }
3123 }
3124 }
3125 }
3126 }
3127 endloop:
3128 page->lmark.span = NULL;
3129 page->fmark.span = NULL;
3130
3131 close:
3132 if (f != stdout) {
3133 int ret = fclose (f);
3134 fd = -1;
3135 if (ret == -1) {
3136 if (errno != ECHILD) {
3137 fprintf (stderr, "failed to close sel pipe: %s\n",
3138 strerror (errno));
3139 }
3140 }
3141 }
3142 unlock:
3143 unlock ("ml_copysel");
3144
3145 done:
3146 if (fd >= 0) {
3147 if (close (fd)) {
3148 fprintf (stderr, "failed to close sel pipe: %s\n",
3149 strerror (errno));
3150 }
3151 }
3152 CAMLreturn (Val_unit);
3153 }
3154
3155 CAMLprim value ml_getpdimrect (value pagedimno_v)
3156 {
3157 CAMLparam1 (pagedimno_v);
3158 CAMLlocal1 (ret_v);
3159 int pagedimno = Int_val (pagedimno_v);
3160 fz_rect box;
3161
3162 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3163 if (trylock ("ml_getpdimrect")) {
3164 box = fz_empty_rect;
3165 }
3166 else {
3167 box = state.pagedims[pagedimno].mediabox;
3168 unlock ("ml_getpdimrect");
3169 }
3170
3171 Store_double_field (ret_v, 0, box.x0);
3172 Store_double_field (ret_v, 1, box.x1);
3173 Store_double_field (ret_v, 2, box.y0);
3174 Store_double_field (ret_v, 3, box.y1);
3175
3176 CAMLreturn (ret_v);
3177 }
3178
3179 static double getmaxw (void)
3180 {
3181 int i;
3182 struct pagedim *p;
3183 double maxw = 0.0;
3184
3185 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3186 double x0, x1, w;
3187
3188 x0 = MIN (p->mediabox.x0, p->mediabox.x1);
3189 x1 = MAX (p->mediabox.x0, p->mediabox.x1);
3190
3191 w = x1 - x0;
3192 maxw = MAX (w, maxw);
3193 }
3194 return maxw;
3195 }
3196
3197 CAMLprim value ml_getmaxw (value unit_v)
3198 {
3199 CAMLparam1 (unit_v);
3200 CAMLlocal1 (ret_v);
3201 double maxw = 0.0;
3202
3203 if (trylock ("ml_getmaxw")) {
3204 goto done;
3205 }
3206 maxw = getmaxw ();
3207 unlock ("ml_getmaxw");
3208 done:
3209 ret_v = caml_copy_double (maxw);
3210 CAMLreturn (ret_v);
3211 }
3212
3213 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3214 value dw_v, value cols_v)
3215 {
3216 CAMLparam3 (winw_v, winh_v, dw_v);
3217 CAMLlocal1 (ret_v);
3218 int i;
3219 double zoom = 1.0;
3220 double maxw = 0.0, maxh = 0.0;
3221 struct pagedim *p;
3222 double winw = Int_val (winw_v);
3223 double winh = Int_val (winh_v);
3224 double dw = Int_val (dw_v);
3225 double cols = Int_val (cols_v);
3226 double pw = 1.0, ph = 1.0, aspect;
3227
3228 if (trylock ("ml_zoom_for_height")) {
3229 goto done;
3230 }
3231
3232 if (state.proportional) {
3233 maxw = getmaxw () / cols;
3234 }
3235
3236 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3237 fz_rect rect;
3238 fz_matrix rm;
3239 double x0, x1, y0, y1, w, h, scaledh, scale;
3240
3241 fz_rotate (&rm, p->rotate + state.rotate);
3242 rect = p->mediabox;
3243 fz_transform_rect (&rect, &rm);
3244 x0 = MIN (rect.x0, rect.x1);
3245 x1 = MAX (rect.x0, rect.x1);
3246 y0 = MIN (rect.y0, rect.y1);
3247 y1 = MAX (rect.y0, rect.y1);
3248
3249 w = (x1 - x0) / cols;
3250 h = y1 - y0;
3251
3252 if (state.proportional) {
3253 scale = w / maxw;
3254 scaledh = h * scale;
3255 }
3256 else {
3257 scale = 1.0;
3258 scaledh = h;
3259 }
3260
3261 if (scaledh > maxh) {
3262 maxh = scaledh;
3263 ph = scaledh;
3264 pw = w * scale;
3265 }
3266 }
3267
3268 aspect = pw / ph;
3269 zoom = (winh * aspect + dw) / winw;
3270
3271 unlock ("ml_zoom_for_height");
3272 done:
3273 ret_v = caml_copy_double (zoom);
3274 CAMLreturn (ret_v);
3275 }
3276
3277 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3278 {
3279 CAMLparam4 (pt_v, x_v, y_v, string_v);
3280 CAMLlocal1 (ret_v);
3281 int pt = Int_val(pt_v);
3282 int x = Int_val (x_v);
3283 int y = Int_val (y_v);
3284 double w;
3285
3286 w = draw_string (state.face, pt, x, y, String_val (string_v));
3287 ret_v = caml_copy_double (w);
3288 CAMLreturn (ret_v);
3289 }
3290
3291 CAMLprim value ml_measure_string (value pt_v, value string_v)
3292 {
3293 CAMLparam2 (pt_v, string_v);
3294 CAMLlocal1 (ret_v);
3295 int pt = Int_val (pt_v);
3296 double w;
3297
3298 w = measure_string (state.face, pt, String_val (string_v));
3299 ret_v = caml_copy_double (w);
3300 CAMLreturn (ret_v);
3301 }
3302
3303 CAMLprim value ml_getpagebox (value opaque_v)
3304 {
3305 CAMLparam1 (opaque_v);
3306 CAMLlocal1 (ret_v);
3307 fz_rect rect;
3308 fz_irect bbox;
3309 fz_matrix ctm;
3310 fz_device *dev;
3311 char *s = String_val (opaque_v);
3312 struct page *page = parse_pointer ("ml_getpagebox", s);
3313
3314 ret_v = caml_alloc_tuple (4);
3315 dev = fz_new_bbox_device (state.ctx, &rect);
3316 dev->hints |= FZ_IGNORE_SHADE;
3317
3318 switch (page->type) {
3319 case DPDF:
3320 ctm = pagectm (page);
3321 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, &ctm, NULL);
3322 break;
3323
3324 case DXPS:
3325 ctm = pagectm (page);
3326 xps_run_page (state.u.xps, page->u.xpspage, dev, &ctm, NULL);
3327 break;
3328
3329 default:
3330 rect = fz_infinite_rect;
3331 break;
3332 }
3333
3334 fz_free_device (dev);
3335 fz_round_rect (&bbox, &rect);
3336 Field (ret_v, 0) = Val_int (bbox.x0);
3337 Field (ret_v, 1) = Val_int (bbox.y0);
3338 Field (ret_v, 2) = Val_int (bbox.x1);
3339 Field (ret_v, 3) = Val_int (bbox.y1);
3340
3341 CAMLreturn (ret_v);
3342 }
3343
3344 CAMLprim value ml_setaalevel (value level_v)
3345 {
3346 CAMLparam1 (level_v);
3347
3348 state.aalevel = Int_val (level_v);
3349 CAMLreturn (Val_unit);
3350 }
3351
3352 #undef pixel
3353 #include <X11/Xlib.h>
3354 #include <GL/glx.h>
3355
3356 static struct {
3357 Display *dpy;
3358 GLXContext ctx;
3359 GLXDrawable drawable;
3360 } glx;
3361
3362 #include "keysym2ucs.c"
3363
3364 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3365 {
3366 CAMLparam1 (keysym_v);
3367 CAMLlocal1 (str_v);
3368 KeySym keysym = Int_val (keysym_v);
3369 Rune rune;
3370 int len;
3371 char buf[5];
3372
3373 rune = keysym2ucs (keysym);
3374 len = fz_runetochar (buf, rune);
3375 buf[len] = 0;
3376 str_v = caml_copy_string (buf);
3377 CAMLreturn (str_v);
3378 }
3379
3380 CAMLprim value ml_glx (value win_v)
3381 {
3382 CAMLparam1 (win_v);
3383 XVisualInfo *visual;
3384 int screen, wid = Int_val (win_v);
3385 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3386
3387 glx.dpy = XOpenDisplay (NULL);
3388 if (!glx.dpy) {
3389 caml_failwith ("XOpenDisplay");
3390 }
3391
3392 screen = DefaultScreen (glx.dpy);
3393 visual = glXChooseVisual (glx.dpy, screen, attributes);
3394 if (!visual) {
3395 XCloseDisplay (glx.dpy);
3396 glx.dpy = NULL;
3397 caml_failwith ("glXChooseVisual");
3398 }
3399
3400 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3401 XFree (visual);
3402 if (!glx.ctx) {
3403 XCloseDisplay (glx.dpy);
3404 glx.dpy = NULL;
3405 caml_failwith ("glXCreateContext");
3406 }
3407
3408 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3409 glXDestroyContext (glx.dpy, glx.ctx);
3410 XCloseDisplay (glx.dpy);
3411 glx.dpy = NULL;
3412 glx.ctx = NULL;
3413 caml_failwith ("glXMakeCurrent");
3414 }
3415 glx.drawable = wid;
3416 CAMLreturn (Val_unit);
3417 }
3418
3419 CAMLprim value ml_swapb (value unit_v)
3420 {
3421 CAMLparam1 (unit_v);
3422 glXSwapBuffers (glx.dpy, glx.drawable);
3423 CAMLreturn (Val_unit);
3424 }
3425
3426 CAMLprim value ml_glxsync (value unit_v)
3427 {
3428 CAMLparam1 (unit_v);
3429 if (glx.dpy && glx.ctx) {
3430 glXWaitX ();
3431 glXWaitGL ();
3432 }
3433 CAMLreturn (Val_unit);
3434 }
3435
3436 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3437 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3438
3439 CAMLprim value ml_platform (value unit_v)
3440 {
3441 CAMLparam1 (unit_v);
3442 int platid = piunknown;
3443
3444 #if defined __linux__
3445 platid = pilinux;
3446 #elif defined __CYGWIN__
3447 platid = picygwin;
3448 #elif defined __DragonFly__
3449 platid = pidragonflybsd;
3450 #elif defined __FreeBSD__
3451 platid = pifreebsd;
3452 #elif defined __OpenBSD__
3453 platid = piopenbsd;
3454 #elif defined __NetBSD__
3455 platid = pinetbsd;
3456 #elif defined __sun__
3457 platid = pisun;
3458 #elif defined __APPLE__
3459 platid = piosx;
3460 #endif
3461 CAMLreturn (Val_int (platid));
3462 }
3463
3464 CAMLprim value ml_cloexec (value fd_v)
3465 {
3466 CAMLparam1 (fd_v);
3467 int fd = Int_val (fd_v);
3468
3469 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3470 uerror ("fcntl", Nothing);
3471 }
3472 CAMLreturn (Val_unit);
3473 }
3474
3475 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3476 {
3477 CAMLparam2 (w_v, h_v);
3478 CAMLlocal1 (ret_v);
3479 struct pbo *pbo;
3480 int w = Int_val (w_v);
3481 int h = Int_val (h_v);
3482 int cs = Int_val (cs_v);
3483
3484 if (state.pbo_usable) {
3485 pbo = calloc (sizeof (*pbo), 1);
3486 if (!pbo) {
3487 err (1, "calloc pbo");
3488 }
3489
3490 switch (cs) {
3491 case 0:
3492 case 1:
3493 pbo->size = w*h*4;
3494 break;
3495 case 2:
3496 pbo->size = w*h*2;
3497 break;
3498 default:
3499 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3500 }
3501
3502 state.glGenBuffersARB (1, &pbo->id);
3503 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3504 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3505 NULL, GL_STREAM_DRAW);
3506 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3507 GL_READ_WRITE);
3508 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3509 if (!pbo->ptr) {
3510 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3511 state.glDeleteBuffersARB (1, &pbo->id);
3512 free (pbo);
3513 ret_v = caml_copy_string ("0");
3514 }
3515 else {
3516 int res;
3517 char *s;
3518
3519 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3520 if (res < 0) {
3521 err (1, "snprintf %" FMT_ptr " failed", pbo);
3522 }
3523 s = malloc (res+1);
3524 if (!s) {
3525 err (1, "malloc %d bytes failed", res+1);
3526 }
3527 res = sprintf (s, "%" FMT_ptr, pbo);
3528 if (res < 0) {
3529 err (1, "sprintf %" FMT_ptr " failed", pbo);
3530 }
3531 ret_v = caml_copy_string (s);
3532 free (s);
3533 }
3534 }
3535 else {
3536 ret_v = caml_copy_string ("0");
3537 }
3538 CAMLreturn (ret_v);
3539 }
3540
3541 CAMLprim value ml_freepbo (value s_v)
3542 {
3543 CAMLparam1 (s_v);
3544 char *s = String_val (s_v);
3545 struct tile *tile = parse_pointer ("ml_freepbo", s);
3546
3547 if (tile->pbo) {
3548 state.glDeleteBuffersARB (1, &tile->pbo->id);
3549 tile->pbo->id = -1;
3550 tile->pbo->ptr = NULL;
3551 tile->pbo->size = -1;
3552 }
3553 CAMLreturn (Val_unit);
3554 }
3555
3556 CAMLprim value ml_unmappbo (value s_v)
3557 {
3558 CAMLparam1 (s_v);
3559 char *s = String_val (s_v);
3560 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3561
3562 if (tile->pbo) {
3563 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3564 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3565 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3566 }
3567 tile->pbo->ptr = NULL;
3568 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3569 }
3570 CAMLreturn (Val_unit);
3571 }
3572
3573 static void setuppbo (void)
3574 {
3575 #define GGPA(n) *(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n)
3576 GGPA (glBindBufferARB);
3577 if (state.glBindBufferARB) {
3578 GGPA (glUnmapBufferARB);
3579 if (state.glUnmapBufferARB) {
3580 GGPA (glMapBufferARB);
3581 if (state.glMapBufferARB) {
3582 GGPA (glBufferDataARB);
3583 if (state.glBufferDataARB) {
3584 GGPA (glGenBuffersARB);
3585 if (state.glGenBuffersARB) {
3586 GGPA (glDeleteBuffersARB);
3587 if (state.glDeleteBuffersARB) {
3588 state.pbo_usable = 1;
3589 }
3590 }
3591 }
3592 }
3593 }
3594 }
3595 #undef GGPA
3596 }
3597
3598 CAMLprim value ml_pbo_usable (value unit_v)
3599 {
3600 CAMLparam1 (unit_v);
3601 CAMLreturn (Val_bool (state.pbo_usable));
3602 }
3603
3604 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
3605 {
3606 CAMLparam3 (ptr_v, x_v, y_v);
3607 CAMLlocal2 (ret_v, tup_v);
3608 struct page *page;
3609 char *s = String_val (ptr_v);
3610 int x = Int_val (x_v), y = Int_val (y_v);
3611 struct pagedim *pdim;
3612 fz_point p;
3613 fz_matrix ctm;
3614
3615 page = parse_pointer ("ml_unproject", s);
3616 pdim = &state.pagedims[page->pdimno];
3617
3618 ret_v = Val_int (0);
3619 if (trylock ("ml_unproject")) {
3620 goto done;
3621 }
3622
3623 switch (page->type) {
3624 case DPDF:
3625 ctm = trimctm (page->u.pdfpage, page->pdimno);
3626 break;
3627
3628 default:
3629 ctm = fz_identity;
3630 break;
3631 }
3632 p.x = x;
3633 p.y = y;
3634
3635 fz_concat (&ctm, &ctm, &pdim->ctm);
3636 fz_invert_matrix (&ctm, &ctm);
3637 fz_transform_point (&p, &ctm);
3638
3639 tup_v = caml_alloc_tuple (2);
3640 ret_v = caml_alloc_small (1, 1);
3641 Field (tup_v, 0) = Val_int (p.x);
3642 Field (tup_v, 1) = Val_int (p.y);
3643 Field (ret_v, 0) = tup_v;
3644
3645 unlock ("ml_unproject");
3646 done:
3647 CAMLreturn (ret_v);
3648 }
3649
3650 CAMLprim value ml_init (value pipe_v, value params_v)
3651 {
3652 CAMLparam2 (pipe_v, params_v);
3653 CAMLlocal2 (trim_v, fuzz_v);
3654 int ret;
3655 int texcount;
3656 char *fontpath;
3657 int colorspace;
3658 int mustoresize;
3659 int haspboext;
3660 struct sigaction sa;
3661
3662 state.cr = Int_val (Field (pipe_v, 0));
3663 state.cw = Int_val (Field (pipe_v, 1));
3664 state.rotate = Int_val (Field (params_v, 0));
3665 state.proportional = Bool_val (Field (params_v, 1));
3666 trim_v = Field (params_v, 2);
3667 texcount = Int_val (Field (params_v, 3));
3668 state.sliceheight = Int_val (Field (params_v, 4));
3669 mustoresize = Int_val (Field (params_v, 5));
3670 colorspace = Int_val (Field (params_v, 6));
3671 fontpath = String_val (Field (params_v, 7));
3672 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3673 if (!state.trimcachepath) {
3674 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
3675 strerror (errno));
3676 }
3677 haspboext = Bool_val (Field (params_v, 9));
3678
3679 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3680
3681 state.trimmargins = Bool_val (Field (trim_v, 0));
3682 fuzz_v = Field (trim_v, 1);
3683 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3684 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3685 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3686 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3687
3688 set_tex_params (colorspace);
3689
3690 if (*fontpath) {
3691 state.face = load_font (fontpath);
3692 }
3693 else {
3694 unsigned int len;
3695 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3696
3697 state.face = load_builtin_font (base, len);
3698 }
3699 if (!state.face) _exit (1);
3700
3701 realloctexts (texcount);
3702
3703 if (haspboext) {
3704 setuppbo ();
3705 }
3706
3707 #ifdef __CYGWIN__
3708 sa.sa_handler = SIG_IGN;
3709 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
3710 #else
3711 sa.sa_handler = SIG_DFL;
3712 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
3713 #endif
3714 if (sigemptyset (&sa.sa_mask)) {
3715 err (1, "sigemptyset");
3716 }
3717 if (sigaction (SIGCHLD, &sa, NULL)) {
3718 err (1, "sigaction");
3719 }
3720
3721 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
3722 if (ret) {
3723 errx (1, "pthread_create: %s", strerror (ret));
3724 }
3725
3726 CAMLreturn (Val_unit);
3727 }
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