?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
G
[llpp.git] / link.c
blobfb25bedc019caa6e8904781dd6b70bd970dd66f1
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_bbox bounds;
147 fz_rect pagebox;
148 fz_rect mediabox;
149 fz_matrix ctm, zoomctm, lctm, tctm;
150 };
151
152 struct slink {
153 fz_bbox 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_bbox 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 void (*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_bbox 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 freeemptypdfpage (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 }
595 free (tile);
596 }
597
598 #ifdef __ALTIVEC__
599 #include <altivec.h>
600
601 static int cacheline32bytes;
602
603 static void __attribute__ ((constructor)) clcheck (void)
604 {
605 char **envp = environ;
606 unsigned long *auxv;
607
608 while (*envp++);
609
610 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
611 if (*auxv == 19) {
612 cacheline32bytes = auxv[1] == 32;
613 return;
614 }
615 }
616 }
617
618 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
619 {
620 size_t size = pixmap->w * pixmap->h * pixmap->n;
621 if (cacheline32bytes && size > 32) {
622 intptr_t a1, a2, diff;
623 size_t sizea, i;
624 vector unsigned char v = vec_splat_u8 (-1);
625 vector unsigned char *p;
626
627 a1 = a2 = (intptr_t) pixmap->samples;
628 a2 = (a1 + 31) & ~31;
629 diff = a2 - a1;
630 sizea = size - diff;
631 p = (void *) a2;
632
633 while (a1 != a2) *(char *) a1++ = 0xff;
634 for (i = 0; i < (sizea & ~31); i += 32) {
635 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
636 vec_st (v, i, p);
637 vec_st (v, i + 16, p);
638 }
639 while (i < sizea) *((char *) a1 + i++) = 0xff;
640 }
641 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
642 }
643 #else
644 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
645 #endif
646
647 static fz_matrix trimctm (pdf_page *page, int pindex)
648 {
649 fz_matrix ctm;
650 struct pagedim *pdim = &state.pagedims[pindex];
651
652 if (!pdim->tctmready) {
653 if (state.trimmargins) {
654 fz_rect realbox;
655
656 ctm = fz_concat (fz_rotate (-pdim->rotate), fz_scale (1, -1));
657 realbox = fz_transform_rect (ctm, pdim->mediabox);
658 ctm = fz_concat (ctm, fz_translate (-realbox.x0, -realbox.y0));
659 ctm = fz_concat (fz_invert_matrix (page->ctm), ctm);
660 }
661 else {
662 ctm = fz_identity;
663 }
664 pdim->tctm = ctm;
665 pdim->tctmready = 1;
666 }
667 return pdim->tctm;
668 }
669
670 static fz_matrix pagectm (struct page *page)
671 {
672 if (page->type == DPDF) {
673 return fz_concat (trimctm (page->u.pdfpage, page->pdimno),
674 state.pagedims[page->pdimno].ctm);
675 }
676 else {
677 fz_matrix ctm;
678 struct pagedim *pdim = &state.pagedims[page->pdimno];
679
680 ctm = state.pagedims[page->pdimno].ctm;
681 ctm = fz_concat (fz_translate (-pdim->mediabox.x0,
682 -pdim->mediabox.y0), ctm);
683 return ctm;
684 }
685 }
686
687 static void *loadpage (int pageno, int pindex)
688 {
689 fz_device *dev;
690 struct page *page = NULL;
691
692 page = calloc (sizeof (struct page), 1);
693 if (!page) {
694 err (1, "calloc page %d", pageno);
695 }
696
697 page->dlist = fz_new_display_list (state.ctx);
698 dev = fz_new_list_device (state.ctx, page->dlist);
699 switch (state.type) {
700 case DPDF:
701 fz_try (state.ctx) {
702 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
703 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, fz_identity, NULL);
704 page->freepage = freepdfpage;
705 }
706 fz_catch (state.ctx) {
707 page->u.ptr = NULL;
708 page->freepage = freeemptypdfpage;
709 }
710 break;
711
712 case DXPS:
713 page->u.xpspage = xps_load_page (state.u.xps, pageno);
714 xps_run_page (state.u.xps, page->u.xpspage, dev, fz_identity, NULL);
715 page->freepage = freexpspage;
716 break;
717
718 case DCBZ:
719 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
720 cbz_run_page (state.u.cbz, page->u.cbzpage, dev, fz_identity, NULL);
721 page->freepage = freecbzpage;
722 break;
723 }
724 fz_free_device (dev);
725
726 page->pdimno = pindex;
727 page->pageno = pageno;
728 page->sgen = state.gen;
729 page->tgen = state.gen;
730 page->type = state.type;
731
732 return page;
733 }
734
735 static struct tile *alloctile (int h)
736 {
737 int i;
738 int slicecount;
739 size_t tilesize;
740 struct tile *tile;
741
742 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
743 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
744 tile = calloc (tilesize, 1);
745 if (!tile) {
746 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
747 }
748 for (i = 0; i < slicecount; ++i) {
749 int sh = MIN (h, state.sliceheight);
750 tile->slices[i].h = sh;
751 tile->slices[i].texindex = -1;
752 h -= sh;
753 }
754 tile->slicecount = slicecount;
755 tile->sliceheight = state.sliceheight;
756 return tile;
757 }
758
759 #ifdef OBSCURED_OPT
760 struct obs {
761 int cured;
762 fz_bbox b;
763 };
764
765 static void obs_fill_image (fz_device *dev, fz_image *image, fz_matrix ctm,
766 float alpha)
767 {
768 struct obs *obs = dev->user;
769
770 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
771 fz_bbox b = fz_round_rect (fz_transform_rect (ctm, fz_unit_rect));
772 b = fz_intersect_bbox (b, obs->b);
773 obs->cured = b.x0 == obs->b.x0
774 && b.x1 == obs->b.x1
775 && b.y0 == obs->b.y0
776 && b.y1 == obs->b.y1;
777 }
778 }
779
780 static int obscured (struct page *page, fz_bbox bbox)
781 {
782 fz_device dev;
783 struct obs obs;
784
785 memset (&dev, 0, sizeof (dev));
786 memset (&obs, 0, sizeof (obs));
787 dev.hints = 0;
788 dev.flags = 0;
789 dev.user = &obs;
790 dev.ctx = state.ctx;
791 dev.fill_image = obs_fill_image;
792 obs.b = bbox;
793 fz_run_display_list (page->dlist, &dev, pagectm (page), bbox, NULL);
794 return obs.cured;
795 }
796 #define OBSCURED obscured
797 #else
798 #define OBSCURED(a, b) 0
799 #endif
800
801 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
802 struct pbo *pbo)
803 {
804 fz_bbox bbox;
805 fz_device *dev;
806 struct tile *tile;
807 struct pagedim *pdim;
808
809 tile = alloctile (h);
810 pdim = &state.pagedims[page->pdimno];
811
812 bbox = pdim->bounds;
813 bbox.x0 += x;
814 bbox.y0 += y;
815 bbox.x1 = bbox.x0 + w;
816 bbox.y1 = bbox.y0 + h;
817
818 if (state.pig) {
819 if (state.pig->w == w
820 && state.pig->h == h
821 && state.pig->colorspace == state.colorspace) {
822 tile->pixmap = state.pig;
823 tile->pixmap->x = bbox.x0;
824 tile->pixmap->y = bbox.y0;
825 }
826 else {
827 fz_drop_pixmap (state.ctx, state.pig);
828 }
829 state.pig = NULL;
830 }
831 if (!tile->pixmap) {
832 if (pbo) {
833 tile->pixmap =
834 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
835 bbox, pbo->ptr);
836 tile->pbo = pbo;
837 }
838 else {
839 tile->pixmap =
840 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, bbox);
841 }
842 }
843
844 tile->w = w;
845 tile->h = h;
846 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
847 clearpixmap (tile->pixmap);
848 }
849 dev = fz_new_draw_device (state.ctx, tile->pixmap);
850 fz_run_display_list (page->dlist, dev, pagectm (page), bbox, NULL);
851 fz_free_device (dev);
852
853 return tile;
854 }
855
856 static void initpdims (void)
857 {
858 double start, end;
859 int pageno, trim, show;
860 FILE *trimf = NULL;
861 int trimw = 0;
862
863 start = now ();
864
865 if (state.trimmargins && state.trimcachepath) {
866 trimf = fopen (state.trimcachepath, "rb");
867 if (!trimf) {
868 trimf = fopen (state.trimcachepath, "wb");
869 trimw = 1;
870 }
871 }
872 for (pageno = 0; pageno < state.pagecount; ++pageno) {
873 int rotate = 0;
874 struct pagedim *p;
875 fz_rect mediabox;
876
877 switch (state.type) {
878 case DPDF: {
879 pdf_obj *pageobj = state.u.pdf->page_objs[pageno];
880
881 if (state.trimmargins) {
882 pdf_obj *obj;
883 pdf_page *page;
884
885 fz_try (state.ctx) {
886 page = pdf_load_page (state.u.pdf, pageno);
887 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
888 trim = state.trimanew || !obj;
889 if (trim) {
890 fz_rect rect;
891 fz_bbox bbox;
892 fz_matrix ctm;
893 fz_device *dev;
894
895 dev = fz_new_bbox_device (state.ctx, &bbox);
896 dev->hints |= FZ_IGNORE_SHADE;
897 ctm = fz_invert_matrix (page->ctm);
898 pdf_run_page (state.u.pdf, page, dev, fz_identity, NULL);
899 fz_free_device (dev);
900
901 rect.x0 = bbox.x0 + state.trimfuzz.x0;
902 rect.x1 = bbox.x1 + state.trimfuzz.x1;
903 rect.y0 = bbox.y0 + state.trimfuzz.y0;
904 rect.y1 = bbox.y1 + state.trimfuzz.y1;
905 rect = fz_transform_rect (ctm, rect);
906 rect = fz_intersect_rect (rect, page->mediabox);
907
908 if (fz_is_empty_rect (rect)) {
909 mediabox = page->mediabox;
910 }
911 else {
912 mediabox = rect;
913 }
914
915 obj = pdf_new_array (state.ctx, 4);
916 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x0));
917 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y0));
918 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x1));
919 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y1));
920 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
921 }
922 else {
923 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
924 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
925 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
926 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
927 }
928
929 rotate = page->rotate;
930 pdf_free_page (state.u.pdf, page);
931
932 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
933 if (show) {
934 printd ("progress %f Trimming %d",
935 (double) (pageno + 1) / state.pagecount,
936 pageno + 1);
937 }
938 }
939 fz_catch (state.ctx) {
940 }
941 }
942 else {
943 fz_rect cropbox;
944
945 mediabox = pdf_to_rect (state.ctx,
946 pdf_dict_gets (pageobj, "MediaBox"));
947 if (fz_is_empty_rect (mediabox)) {
948 fprintf (stderr, "cannot find page size for page %d\n",
949 pageno+1);
950 mediabox.x0 = 0;
951 mediabox.y0 = 0;
952 mediabox.x1 = 612;
953 mediabox.y1 = 792;
954 }
955
956 cropbox = pdf_to_rect (state.ctx,
957 pdf_dict_gets (pageobj, "CropBox"));
958 if (!fz_is_empty_rect (cropbox)) {
959 mediabox = fz_intersect_rect (mediabox, cropbox);
960 }
961 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
962 }
963 break;
964 }
965
966 case DXPS:
967 {
968 xps_page *page;
969
970 page = xps_load_page (state.u.xps, pageno);
971 mediabox = xps_bound_page (state.u.xps, page);
972 rotate = 0;
973 if (state.trimmargins) {
974 fz_rect rect;
975 fz_bbox bbox;
976 fz_device *dev;
977
978 dev = fz_new_bbox_device (state.ctx, &bbox);
979 dev->hints |= FZ_IGNORE_SHADE;
980 xps_run_page (state.u.xps, page, dev, fz_identity, NULL);
981 fz_free_device (dev);
982
983 rect.x0 = bbox.x0 + state.trimfuzz.x0;
984 rect.x1 = bbox.x1 + state.trimfuzz.x1;
985 rect.y0 = bbox.y0 + state.trimfuzz.y0;
986 rect.y1 = bbox.y1 + state.trimfuzz.y1;
987 rect = fz_intersect_rect (rect, mediabox);
988
989 if (!fz_is_empty_rect (rect)) {
990 mediabox = rect;
991 }
992 }
993 xps_free_page (state.u.xps, page);
994 printd ("progress %f loading %d",
995 (double) (pageno + 1) / state.pagecount,
996 pageno + 1);
997 }
998 break;
999
1000 case DCBZ:
1001 {
1002 rotate = 0;
1003 if (state.trimmargins && trimw) {
1004 cbz_page *page;
1005
1006 page = cbz_load_page (state.u.cbz, pageno);
1007 mediabox = cbz_bound_page (state.u.cbz, page);
1008 cbz_free_page (state.u.cbz, page);
1009 printd ("progress %f Trimming %d",
1010 (double) (pageno + 1) / state.pagecount,
1011 pageno + 1);
1012 if (trimf) {
1013 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1014 if (n - 1) {
1015 err (1, "fwrite trim mediabox");
1016 }
1017 }
1018 }
1019 else {
1020 if (trimf) {
1021 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1022 if (n - 1) {
1023 err (1, "fread trim mediabox");
1024 }
1025 }
1026 else {
1027 mediabox.x0 = mediabox.y0 = 0;
1028 mediabox.x1 = 900;
1029 mediabox.y1 = 900;
1030 }
1031 }
1032 }
1033 break;
1034
1035 default:
1036 ARSERT (0 && state.type);
1037 }
1038
1039 if (state.pagedimcount == 0
1040 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1041 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1042 size_t size;
1043
1044 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1045 state.pagedims = realloc (state.pagedims, size);
1046 if (!state.pagedims) {
1047 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1048 size, state.pagedimcount + 1);
1049 }
1050
1051 p = &state.pagedims[state.pagedimcount++];
1052 p->rotate = rotate;
1053 p->mediabox = mediabox;
1054 p->pageno = pageno;
1055 }
1056 }
1057 end = now ();
1058 if (state.trimmargins) {
1059 printd ("progress 1 Trimmed %d pages in %f seconds",
1060 state.pagecount, end - start);
1061 }
1062 else {
1063 printd ("vmsg Processed %d pages in %f seconds",
1064 state.pagecount, end - start);
1065 }
1066 state.trimanew = 0;
1067 if (trimf) {
1068 if (fclose (trimf)) {
1069 err (1, "fclose");
1070 }
1071 }
1072 }
1073
1074 static void layout (void)
1075 {
1076 int pindex;
1077 fz_rect box;
1078 fz_matrix ctm;
1079 double zoom, w, maxw = 0;
1080 struct pagedim *p = state.pagedims;
1081
1082 if (state.proportional) {
1083 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1084 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1085 p->mediabox);
1086 w = box.x1 - box.x0;
1087 maxw = MAX (w, maxw);
1088 }
1089 }
1090
1091 p = state.pagedims;
1092 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1093 fz_bbox bbox;
1094
1095 ctm = fz_rotate (state.rotate);
1096 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1097 p->mediabox);
1098 w = box.x1 - box.x0;
1099
1100 if (state.proportional) {
1101 double scale = w / maxw;
1102 zoom = (state.w / w) * scale;
1103 }
1104 else {
1105 zoom = state.w / w;
1106 }
1107
1108 p->zoomctm = fz_scale (zoom, zoom);
1109 ctm = fz_concat (p->zoomctm, ctm);
1110
1111 p->pagebox = fz_transform_rect (fz_rotate (p->rotate), p->mediabox);
1112 p->pagebox.x1 -= p->pagebox.x0;
1113 p->pagebox.y1 -= p->pagebox.y0;
1114 p->pagebox.x0 = 0;
1115 p->pagebox.y0 = 0;
1116 bbox = fz_round_rect (fz_transform_rect (ctm, p->pagebox));
1117
1118 p->bounds = bbox;
1119 p->left = state.proportional ? ((maxw - w) * zoom) / 2.0 : 0;
1120 p->ctm = ctm;
1121
1122 ctm = fz_identity;
1123 ctm = fz_concat (ctm, fz_translate (0, -p->mediabox.y1));
1124 ctm = fz_concat (ctm, fz_scale (zoom, -zoom));
1125 ctm = fz_concat (ctm, fz_rotate (p->rotate + state.rotate));
1126 p->lctm = ctm;
1127
1128 p->tctmready = 0;
1129 }
1130
1131 while (p-- != state.pagedims) {
1132 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1133 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1134 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1135 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1136 int w = x1 - x0;
1137 int h = y1 - y0;
1138
1139 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1140 }
1141 }
1142
1143 static void recurse_outline (fz_outline *outline, int level)
1144 {
1145 while (outline) {
1146 fz_link_dest *dest;
1147 int i, top = 0;
1148 struct pagedim *pdim = state.pagedims;
1149
1150 dest = &outline->dest;
1151 for (i = 0; i < state.pagedimcount; ++i) {
1152 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1153 break;
1154 pdim = &state.pagedims[i];
1155 }
1156 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1157 fz_point p;
1158 p.x = 0;
1159 p.y = dest->ld.gotor.lt.y;
1160 p = fz_transform_point (pdim->lctm, p);
1161 top = p.y;
1162 }
1163 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1164 int h;
1165 double y0, y1;
1166
1167 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1168 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1169 h = y1 - y0;
1170 printd ("o %d %d %d %d %s",
1171 level, dest->ld.gotor.page, top, h, outline->title);
1172 }
1173 if (outline->down) {
1174 recurse_outline (outline->down, level + 1);
1175 }
1176 outline = outline->next;
1177 }
1178 }
1179
1180 static void process_outline (void)
1181 {
1182 fz_outline *outline;
1183
1184 if (!state.needoutline) return;
1185
1186 state.needoutline = 0;
1187 switch (state.type) {
1188 case DPDF:
1189 outline = pdf_load_outline (state.u.pdf);
1190 break;
1191 case DXPS:
1192 outline = xps_load_outline (state.u.xps);
1193 break;
1194 default:
1195 outline = NULL;
1196 break;
1197 }
1198 if (outline) {
1199 recurse_outline (outline, 0);
1200 fz_free_outline (state.ctx, outline);
1201 }
1202 }
1203
1204 static char *strofspan (fz_text_span *span)
1205 {
1206 char *p;
1207 char utf8[10];
1208 fz_text_char *ch;
1209 size_t size = 0, cap = 80;
1210
1211 p = malloc (cap + 1);
1212 if (!p) return NULL;
1213
1214 for (ch = span->text; ch < span->text + span->len; ++ch) {
1215 int n = fz_runetochar (utf8, ch->c);
1216 if (size + n > cap) {
1217 cap *= 2;
1218 p = realloc (p, cap + 1);
1219 if (!p) return NULL;
1220 }
1221
1222 memcpy (p + size, utf8, n);
1223 size += n;
1224 }
1225 p[size] = 0;
1226 return p;
1227 }
1228
1229 static int matchspan (regex_t *re, fz_text_span *span, fz_matrix ctm,
1230 int stop, int pageno, double start)
1231 {
1232 int ret;
1233 char *p;
1234 regmatch_t rm;
1235 int a, b, c;
1236 fz_rect *sb, *eb;
1237 fz_point p1, p2, p3, p4;
1238
1239 p = strofspan (span);
1240 if (!p) return -1;
1241
1242 ret = regexec (re, p, 1, &rm, 0);
1243 if (ret) {
1244 free (p);
1245 if (ret != REG_NOMATCH) {
1246 size_t size;
1247 char errbuf[80];
1248 size = regerror (ret, re, errbuf, sizeof (errbuf));
1249 printd ("msg regexec error `%.*s'",
1250 (int) size, errbuf);
1251 return -1;
1252 }
1253 return 0;
1254 }
1255 else {
1256 int l = span->len;
1257 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1258 c += fz_runelen (span->text[a].c);
1259 }
1260 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1261 c += fz_runelen (span->text[b].c);
1262 }
1263
1264 if (fz_runelen (span->text[b].c) > 1) {
1265 b = MAX (0, b-1);
1266 }
1267 sb = &span->text[MIN (a, l-1)].bbox;
1268 eb = &span->text[MIN (b, l-1)].bbox;
1269
1270 p1.x = sb->x0;
1271 p1.y = sb->y0;
1272 p2.x = eb->x1;
1273 p2.y = sb->y0;
1274 p3.x = eb->x1;
1275 p3.y = eb->y1;
1276 p4.x = sb->x0;
1277 p4.y = eb->y1;
1278
1279 if (!stop) {
1280 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1281 pageno, 1,
1282 p1.x, p1.y,
1283 p2.x, p2.y,
1284 p3.x, p3.y,
1285 p4.x, p4.y);
1286
1287 printd ("progress 1 found at %d `%.*s' in %f sec",
1288 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1289 now () - start);
1290 }
1291 else {
1292 printd ("match %d %d %f %f %f %f %f %f %f %f",
1293 pageno, 2,
1294 p1.x, p1.y,
1295 p2.x, p2.y,
1296 p3.x, p3.y,
1297 p4.x, p4.y);
1298 }
1299 free (p);
1300 return 1;
1301 }
1302 }
1303
1304 static int compareblocks (const void *l, const void *r)
1305 {
1306 fz_text_block const *ls = l;
1307 fz_text_block const* rs = r;
1308 return ls->bbox.y0 - rs->bbox.y0;
1309 }
1310
1311 /* wishful thinking function */
1312 static void search (regex_t *re, int pageno, int y, int forward)
1313 {
1314 int i, j;
1315 fz_matrix ctm;
1316 fz_device *tdev;
1317 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1318 fz_text_page *text;
1319 fz_text_sheet *sheet;
1320 struct pagedim *pdim, *pdimprev;
1321 int stop = 0, niters = 0;
1322 double start, end;
1323
1324 if (!(state.type == DPDF || state.type == DXPS))
1325 return;
1326
1327 start = now ();
1328 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1329 if (niters++ == 5) {
1330 niters = 0;
1331 if (hasdata ()) {
1332 printd ("progress 1 attention requested aborting search at %d",
1333 pageno);
1334 stop = 1;
1335 }
1336 else {
1337 printd ("progress %f searching in page %d",
1338 (double) (pageno + 1) / state.pagecount,
1339 pageno);
1340 }
1341 }
1342 pdimprev = NULL;
1343 for (i = 0; i < state.pagedimcount; ++i) {
1344 pdim = &state.pagedims[i];
1345 if (pdim->pageno == pageno) {
1346 goto found;
1347 }
1348 if (pdim->pageno > pageno) {
1349 pdim = pdimprev;
1350 goto found;
1351 }
1352 pdimprev = pdim;
1353 }
1354 pdim = pdimprev;
1355 found:
1356
1357 sheet = fz_new_text_sheet (state.ctx);
1358 text = fz_new_text_page (state.ctx, fz_infinite_rect);
1359 tdev = fz_new_text_device (state.ctx, sheet, text);
1360
1361 switch (state.type) {
1362 case DPDF:
1363 u.ptr = NULL;
1364 fz_try (state.ctx) {
1365 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1366 trimctm (u.pdfpage, pdim - state.pagedims);
1367 ctm = fz_concat (pdim->tctm, pdim->zoomctm);
1368 pdf_run_page (state.u.pdf, u.pdfpage, tdev, ctm, NULL);
1369 }
1370 fz_catch (state.ctx) {
1371 fz_free_device (tdev);
1372 u.ptr = NULL;
1373 goto nextiter;
1374 }
1375 break;
1376
1377 case DXPS:
1378 u.xpspage = xps_load_page (state.u.xps, pageno);
1379 ctm = pdim->ctm;
1380 xps_run_page (state.u.xps, u.xpspage, tdev, ctm, NULL);
1381 break;
1382
1383 default:
1384 ARSERT (0 && state.type);
1385 }
1386
1387 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1388 fz_free_device (tdev);
1389
1390 for (j = 0; j < text->len; ++j) {
1391 int k;
1392 fz_text_block *block;
1393
1394 block = &text->blocks[forward ? j : text->len - 1 - j];
1395
1396 for (k = 0; k < block->len; ++k) {
1397 fz_text_line *line;
1398 fz_text_span *span;
1399
1400 if (forward) {
1401 line = &block->lines[k];
1402 if (line->bbox.y0 < y + 1) continue;
1403 }
1404 else {
1405 line = &block->lines[block->len - 1 - k];
1406 if (line->bbox.y0 > y - 1) continue;
1407 }
1408
1409 for (span = line->spans;
1410 span < line->spans + line->len;
1411 ++span) {
1412
1413 switch (matchspan (re, span, ctm, stop, pageno, start)) {
1414 case 0: break;
1415 case 1: stop = 1; break;
1416 case -1: stop = 1; goto endloop;
1417 }
1418 }
1419 }
1420 }
1421 nextiter:
1422 if (forward) {
1423 pageno += 1;
1424 y = 0;
1425 }
1426 else {
1427 pageno -= 1;
1428 y = INT_MAX;
1429 }
1430 endloop:
1431 fz_free_text_page (state.ctx, text);
1432 fz_free_text_sheet (state.ctx, sheet);
1433 if (u.ptr) {
1434 state.freepage (u.ptr);
1435 }
1436 }
1437 end = now ();
1438 if (!stop) {
1439 printd ("progress 1 no matches %f sec", end - start);
1440 }
1441 printd ("clearrects");
1442 }
1443
1444 static void set_tex_params (int colorspace)
1445 {
1446 union {
1447 unsigned char b;
1448 unsigned int s;
1449 } endianness = {1};
1450
1451 switch (colorspace) {
1452 case 0:
1453 state.texiform = GL_RGBA8;
1454 state.texform = GL_RGBA;
1455 state.texty = GL_UNSIGNED_BYTE;
1456 state.colorspace = fz_device_rgb;
1457 break;
1458 case 1:
1459 state.texiform = GL_RGBA8;
1460 state.texform = GL_BGRA;
1461 state.texty = endianness.s > 1
1462 ? GL_UNSIGNED_INT_8_8_8_8
1463 : GL_UNSIGNED_INT_8_8_8_8_REV;
1464 state.colorspace = fz_device_bgr;
1465 break;
1466 case 2:
1467 state.texiform = GL_LUMINANCE_ALPHA;
1468 state.texform = GL_LUMINANCE_ALPHA;
1469 state.texty = GL_UNSIGNED_BYTE;
1470 state.colorspace = fz_device_gray;
1471 break;
1472 default:
1473 errx (1, "invalid colorspce %d", colorspace);
1474 }
1475 }
1476
1477 static void realloctexts (int texcount)
1478 {
1479 size_t size;
1480
1481 if (texcount == state.texcount) return;
1482
1483 if (texcount < state.texcount) {
1484 glDeleteTextures (state.texcount - texcount,
1485 state.texids + texcount);
1486 }
1487
1488 size = texcount * sizeof (*state.texids);
1489 state.texids = realloc (state.texids, size);
1490 if (!state.texids) {
1491 err (1, "realloc texids %" FMT_s, size);
1492 }
1493
1494 size = texcount * sizeof (*state.texowners);
1495 state.texowners = realloc (state.texowners, size);
1496 if (!state.texowners) {
1497 err (1, "realloc texowners %" FMT_s, size);
1498 }
1499 if (texcount > state.texcount) {
1500 int i;
1501
1502 glGenTextures (texcount - state.texcount,
1503 state.texids + state.texcount);
1504 for (i = state.texcount; i < texcount; ++i) {
1505 state.texowners[i].w = -1;
1506 state.texowners[i].slice = NULL;
1507 }
1508 }
1509 state.texcount = texcount;
1510 state.texindex = 0;
1511 }
1512
1513 static char *mbtoutf8 (char *s)
1514 {
1515 char *p, *r;
1516 wchar_t *tmp;
1517 size_t i, ret, len;
1518
1519 len = mbstowcs (NULL, s, strlen (s));
1520 if (len == 0) {
1521 return s;
1522 }
1523 else {
1524 if (len == (size_t) -1) {
1525 return s;
1526 }
1527 }
1528
1529 tmp = malloc (len * sizeof (wchar_t));
1530 if (!tmp) {
1531 return s;
1532 }
1533
1534 ret = mbstowcs (tmp, s, len);
1535 if (ret == (size_t) -1) {
1536 free (tmp);
1537 return s;
1538 }
1539
1540 len = 0;
1541 for (i = 0; i < ret; ++i) {
1542 len += fz_runelen (tmp[i]);
1543 }
1544
1545 p = r = malloc (len + 1);
1546 if (!r) {
1547 free (tmp);
1548 return s;
1549 }
1550
1551 for (i = 0; i < ret; ++i) {
1552 p += fz_runetochar (p, tmp[i]);
1553 }
1554 *p = 0;
1555 free (tmp);
1556 return r;
1557 }
1558
1559 CAMLprim value ml_mbtoutf8 (value s_v)
1560 {
1561 CAMLparam1 (s_v);
1562 CAMLlocal1 (ret_v);
1563 char *s, *r;
1564
1565 s = String_val (s_v);
1566 r = mbtoutf8 (s);
1567 if (r == s) {
1568 ret_v = s_v;
1569 }
1570 else {
1571 ret_v = caml_copy_string (r);
1572 free (r);
1573 }
1574 CAMLreturn (ret_v);
1575 }
1576
1577 static void * mainloop (void *unused)
1578 {
1579 char *p = NULL;
1580 int len, ret, oldlen = 0;
1581
1582 for (;;) {
1583 len = readlen ();
1584 if (len == 0) {
1585 errx (1, "readlen returned 0");
1586 }
1587
1588 if (oldlen < len + 1) {
1589 p = realloc (p, len + 1);
1590 if (!p) {
1591 err (1, "realloc %d failed", len + 1);
1592 }
1593 oldlen = len + 1;
1594 }
1595 readdata (p, len);
1596 p[len] = 0;
1597
1598 if (!strncmp ("open", p, 4)) {
1599 size_t filenamelen;
1600 char *password;
1601 char *filename = p + 5;
1602 char *utf8filename;
1603
1604 filenamelen = strlen (filename);
1605 password = filename + filenamelen + 1;
1606
1607 openxref (filename, password);
1608 pdfinfo ();
1609 initpdims ();
1610 utf8filename = mbtoutf8 (filename);
1611 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1612 if (utf8filename != filename) {
1613 free (utf8filename);
1614 }
1615 state.needoutline = 1;
1616 }
1617 else if (!strncmp ("cs", p, 2)) {
1618 int i, colorspace;
1619
1620 ret = sscanf (p + 2, " %d", &colorspace);
1621 if (ret != 1) {
1622 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1623 }
1624 lock ("cs");
1625 set_tex_params (colorspace);
1626 for (i = 0; i < state.texcount; ++i) {
1627 state.texowners[i].w = -1;
1628 state.texowners[i].slice = NULL;
1629 }
1630 unlock ("cs");
1631 }
1632 else if (!strncmp ("freepage", p, 8)) {
1633 void *ptr;
1634
1635 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1636 if (ret != 1) {
1637 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1638 }
1639 freepage (ptr);
1640 }
1641 else if (!strncmp ("freetile", p, 8)) {
1642 void *ptr;
1643
1644 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1645 if (ret != 1) {
1646 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1647 }
1648 freetile (ptr);
1649 }
1650 else if (!strncmp ("search", p, 6)) {
1651 int icase, pageno, y, ret, len2, forward;
1652 char *pattern;
1653 regex_t re;
1654
1655 ret = sscanf (p + 6, " %d %d %d %d,%n",
1656 &icase, &pageno, &y, &forward, &len2);
1657 if (ret != 4) {
1658 errx (1, "malformed search `%s' ret=%d", p, ret);
1659 }
1660
1661 pattern = p + 6 + len2;
1662 ret = regcomp (&re, pattern,
1663 REG_EXTENDED | (icase ? REG_ICASE : 0));
1664 if (ret) {
1665 char errbuf[80];
1666 size_t size;
1667
1668 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1669 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1670 }
1671 else {
1672 search (&re, pageno, y, forward);
1673 regfree (&re);
1674 }
1675 }
1676 else if (!strncmp ("geometry", p, 8)) {
1677 int w, h;
1678
1679 printd ("clear");
1680 ret = sscanf (p + 8, " %d %d", &w, &h);
1681 if (ret != 2) {
1682 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1683 }
1684
1685 lock ("geometry");
1686 state.h = h;
1687 if (w != state.w) {
1688 int i;
1689 state.w = w;
1690 for (i = 0; i < state.texcount; ++i) {
1691 state.texowners[i].slice = NULL;
1692 }
1693 }
1694 layout ();
1695 process_outline ();
1696 state.gen++;
1697 unlock ("geometry");
1698 printd ("continue %d", state.pagecount);
1699 }
1700 else if (!strncmp ("reqlayout", p, 9)) {
1701 int rotate, proportional;
1702
1703 printd ("clear");
1704 ret = sscanf (p + 9, " %d %d", &rotate, &proportional);
1705 if (ret != 2) {
1706 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1707 }
1708 lock ("reqlayout");
1709 if (state.rotate != rotate || state.proportional != proportional) {
1710 state.gen += 1;
1711 }
1712 state.rotate = rotate;
1713 state.proportional = proportional;
1714 layout ();
1715 process_outline ();
1716 state.gen++;
1717 unlock ("reqlayout");
1718 printd ("continue %d", state.pagecount);
1719 }
1720 else if (!strncmp ("page", p, 4)) {
1721 double a, b;
1722 struct page *page;
1723 int pageno, pindex, ret;
1724
1725 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1726 if (ret != 2) {
1727 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1728 }
1729
1730 lock ("page");
1731 a = now ();
1732 page = loadpage (pageno, pindex);
1733 b = now ();
1734 unlock ("page");
1735
1736 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1737 }
1738 else if (!strncmp ("tile", p, 4)) {
1739 int x, y, w, h, ret;
1740 struct page *page;
1741 struct tile *tile;
1742 double a, b;
1743 void *data;
1744
1745 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1746 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1747 if (ret != 6) {
1748 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1749 }
1750
1751 lock ("tile");
1752 a = now ();
1753 tile = rendertile (page, x, y, w, h, data);
1754 b = now ();
1755 unlock ("tile");
1756
1757 printd ("tile %d %d %" FMT_ptr " %u %f",
1758 x, y,
1759 FMT_ptr_cast2 (tile),
1760 tile->w * tile->h * tile->pixmap->n,
1761 b - a);
1762 }
1763 else if (!strncmp ("settrim", p, 7)) {
1764 int trimmargins;
1765 fz_bbox fuzz;
1766
1767 ret = sscanf (p + 7, " %d %d %d %d %d", &trimmargins,
1768 &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1769 if (ret != 5) {
1770 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1771 }
1772 printd ("clear");
1773 lock ("settrim");
1774 state.trimmargins = trimmargins;
1775 state.needoutline = 1;
1776 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1777 state.trimanew = 1;
1778 state.trimfuzz = fuzz;
1779 }
1780 state.pagedimcount = 0;
1781 free (state.pagedims);
1782 state.pagedims = NULL;
1783 initpdims ();
1784 layout ();
1785 process_outline ();
1786 unlock ("settrim");
1787 printd ("continue %d", state.pagecount);
1788 }
1789 else if (!strncmp ("sliceh", p, 6)) {
1790 int h;
1791
1792 ret = sscanf (p + 6, " %d", &h);
1793 if (ret != 1) {
1794 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1795 }
1796 if (h != state.sliceheight) {
1797 int i;
1798
1799 state.sliceheight = h;
1800 for (i = 0; i < state.texcount; ++i) {
1801 state.texowners[i].w = -1;
1802 state.texowners[i].h = -1;
1803 state.texowners[i].slice = NULL;
1804 }
1805 }
1806 }
1807 else if (!strncmp ("interrupt", p, 9)) {
1808 printd ("vmsg interrupted");
1809 }
1810 else {
1811 errx (1, "unknown command %.*s", len, p);
1812 }
1813 }
1814 return 0;
1815 }
1816
1817 CAMLprim value ml_realloctexts (value texcount_v)
1818 {
1819 CAMLparam1 (texcount_v);
1820 int ok;
1821
1822 if (trylock ("ml_realloctexts")) {
1823 ok = 0;
1824 goto done;
1825 }
1826 realloctexts (Int_val (texcount_v));
1827 ok = 1;
1828 unlock ("ml_realloctexts");
1829
1830 done:
1831 CAMLreturn (Val_bool (ok));
1832 }
1833
1834 static void showsel (struct page *page, int ox, int oy)
1835 {
1836 int seen = 0;
1837 fz_bbox bbox;
1838 fz_text_line *line;
1839 fz_text_span *span;
1840 fz_text_block *block;
1841 struct mark first, last;
1842
1843 first = page->fmark;
1844 last = page->lmark;
1845
1846 if (!first.span || !last.span) return;
1847
1848 glEnable (GL_BLEND);
1849 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
1850 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
1851
1852 ox += state.pagedims[page->pdimno].bounds.x0;
1853 oy += state.pagedims[page->pdimno].bounds.y0;
1854 for (block = page->text->blocks;
1855 block < page->text->blocks + page->text->len;
1856 ++block) {
1857 for (line = block->lines;
1858 line < block->lines + block->len;
1859 ++line) {
1860 for (span = line->spans;
1861 span < line->spans + line->len;
1862 ++span) {
1863 int i, j, k;
1864
1865 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
1866
1867 j = 0;
1868 k = span->len - 1;
1869
1870 if (span == page->fmark.span && span == page->lmark.span) {
1871 seen = 1;
1872 j = MIN (first.i, last.i);
1873 k = MAX (first.i, last.i);
1874 }
1875 else if (span == first.span) {
1876 seen = 1;
1877 j = first.i;
1878 }
1879 else if (span == last.span) {
1880 seen = 1;
1881 k = last.i;
1882 }
1883
1884 if (seen) {
1885 for (i = j; i <= k; ++i) {
1886 fz_bbox b = fz_round_rect (span->text[i].bbox);
1887 bbox = fz_union_bbox (bbox, b);
1888 }
1889 lprintf ("%d %d %d %d oy=%d ox=%d\n",
1890 bbox.x0,
1891 bbox.y0,
1892 bbox.x1,
1893 bbox.y1,
1894 oy, ox);
1895
1896 glRecti (bbox.x0 + ox, bbox.y0 + oy,
1897 bbox.x1 + ox, bbox.y1 + oy);
1898 if (span == last.span) {
1899 goto done;
1900 }
1901 }
1902 }
1903 }
1904 }
1905 done:
1906 glDisable (GL_BLEND);
1907 }
1908
1909 #include "glfont.c"
1910
1911 static void highlightlinks (struct page *page, int xoff, int yoff)
1912 {
1913 fz_matrix ctm;
1914 fz_link *link, *links;
1915
1916 switch (page->type) {
1917 case DPDF:
1918 links = page->u.pdfpage->links;
1919 break;
1920
1921 case DXPS:
1922 links = page->u.xpspage->links;
1923 break;
1924
1925 default:
1926 return;
1927 }
1928
1929 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
1930 glEnable (GL_LINE_STIPPLE);
1931 glLineStipple (0.5, 0xcccc);
1932
1933 xoff -= state.pagedims[page->pdimno].bounds.x0;
1934 yoff -= state.pagedims[page->pdimno].bounds.y0;
1935 ctm = fz_concat (pagectm (page), fz_translate (xoff, yoff));
1936
1937 glBegin (GL_QUADS);
1938 for (link = links; link; link = link->next) {
1939 fz_point p1, p2, p3, p4;
1940
1941 p1.x = link->rect.x0;
1942 p1.y = link->rect.y0;
1943
1944 p2.x = link->rect.x1;
1945 p2.y = link->rect.y0;
1946
1947 p3.x = link->rect.x1;
1948 p3.y = link->rect.y1;
1949
1950 p4.x = link->rect.x0;
1951 p4.y = link->rect.y1;
1952
1953 p1 = fz_transform_point (ctm, p1);
1954 p2 = fz_transform_point (ctm, p2);
1955 p3 = fz_transform_point (ctm, p3);
1956 p4 = fz_transform_point (ctm, p4);
1957
1958 switch (link->dest.kind) {
1959 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
1960 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
1961 default: glColor3ub (0, 0, 0); break;
1962 }
1963
1964 glVertex2f (p1.x, p1.y);
1965 glVertex2f (p2.x, p2.y);
1966 glVertex2f (p3.x, p3.y);
1967 glVertex2f (p4.x, p4.y);
1968 }
1969 glEnd ();
1970
1971 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
1972 glDisable (GL_LINE_STIPPLE);
1973 }
1974
1975 static int compareslinks (const void *l, const void *r)
1976 {
1977 struct slink const *ls = l;
1978 struct slink const *rs = r;
1979 if (ls->bbox.y0 == rs->bbox.y0) {
1980 return rs->bbox.x0 - rs->bbox.x0;
1981 }
1982 return ls->bbox.y0 - rs->bbox.y0;
1983 }
1984
1985 static void droptext (struct page *page)
1986 {
1987 if (page->text) {
1988 fz_free_text_page (state.ctx, page->text);
1989 page->fmark.i = -1;
1990 page->lmark.i = -1;
1991 page->fmark.span = NULL;
1992 page->lmark.span = NULL;
1993 page->text = NULL;
1994 }
1995 if (page->sheet) {
1996 fz_free_text_sheet (state.ctx, page->sheet);
1997 }
1998 }
1999
2000 static void dropslinks (struct page *page)
2001 {
2002 if (page->slinks) {
2003 free (page->slinks);
2004 page->slinks = NULL;
2005 page->slinkcount = 0;
2006 }
2007 }
2008
2009 static void ensureslinks (struct page *page)
2010 {
2011 fz_matrix ctm;
2012 int i, count = 0;
2013 size_t slinksize = sizeof (*page->slinks);
2014 fz_link *link, *links;
2015
2016 if (state.gen != page->sgen) {
2017 dropslinks (page);
2018 page->sgen = state.gen;
2019 }
2020 if (page->slinks) return;
2021
2022 switch (page->type) {
2023 case DPDF:
2024 links = page->u.pdfpage->links;
2025 ctm = fz_concat (trimctm (page->u.pdfpage, page->pdimno),
2026 state.pagedims[page->pdimno].ctm);
2027 break;
2028
2029 case DXPS:
2030 links = page->u.xpspage->links;
2031 ctm = state.pagedims[page->pdimno].ctm;
2032 break;
2033
2034 default:
2035 return;
2036 }
2037
2038 for (link = links; link; link = link->next) {
2039 count++;
2040 }
2041 if (count > 0) {
2042 page->slinkcount = count;
2043 page->slinks = calloc (count, slinksize);
2044 if (!page->slinks) {
2045 err (1, "realloc slinks %d", count);
2046 }
2047
2048 for (i = 0, link = links; link; ++i, link = link->next) {
2049 page->slinks[i].link = link;
2050 page->slinks[i].bbox =
2051 fz_round_rect (fz_transform_rect (ctm, link->rect));
2052 }
2053 qsort (page->slinks, count, slinksize, compareslinks);
2054 }
2055 }
2056
2057 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2058 static void fmt_linkn (char *s, unsigned int u)
2059 {
2060 unsigned int len; unsigned int q;
2061 int zma = 'z' - 'a' + 1;
2062 len = 1; q = u;
2063 while (q > zma - 1) { ++len; q /= zma; }
2064 if (s) {
2065 s += len;
2066 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2067 /* handles u == 0 */
2068 }
2069 s[len] = 0;
2070 }
2071
2072 static void highlightslinks (struct page *page, int xoff, int yoff,
2073 int noff, char *targ, int tlen, int hfsize)
2074 {
2075 int i;
2076 char buf[40];
2077 struct slink *slink;
2078 double x0, y0, x1, y1, w;
2079
2080 ensureslinks (page);
2081 glColor3ub (0xc3, 0xb0, 0x91);
2082 for (i = 0; i < page->slinkcount; ++i) {
2083 fmt_linkn (buf, i + noff);
2084 if (!tlen || !strncmp (targ, buf, tlen)) {
2085 slink = &page->slinks[i];
2086
2087 x0 = slink->bbox.x0 + xoff - 5;
2088 y1 = slink->bbox.y0 + yoff - 5;
2089 y0 = y1 + 10 + hfsize;
2090 w = measure_string (state.face, hfsize, buf);
2091 x1 = x0 + w + 10;
2092 glRectd (x0, y0, x1, y1);
2093 }
2094 }
2095
2096 glEnable (GL_BLEND);
2097 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2098 glEnable (GL_TEXTURE_2D);
2099 glColor3ub (0, 0, 0);
2100 for (i = 0; i < page->slinkcount; ++i) {
2101 fmt_linkn (buf, i + noff);
2102 if (!tlen || !strncmp (targ, buf, tlen)) {
2103 slink = &page->slinks[i];
2104
2105 x0 = slink->bbox.x0 + xoff;
2106 y0 = slink->bbox.y0 + yoff + hfsize;
2107 draw_string (state.face, hfsize, x0, y0, buf);
2108 }
2109 }
2110 glDisable (GL_TEXTURE_2D);
2111 glDisable (GL_BLEND);
2112 }
2113
2114
2115 static void uploadslice (struct tile *tile, struct slice *slice)
2116 {
2117 int offset;
2118 struct slice *slice1;
2119 unsigned char *texdata;
2120
2121 offset = 0;
2122 for (slice1 = tile->slices; slice != slice1; slice1++) {
2123 offset += slice1->h * tile->w * tile->pixmap->n;
2124 }
2125 if (slice->texindex != -1 && slice->texindex < state.texcount
2126 && state.texowners[slice->texindex].slice == slice) {
2127 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2128 }
2129 else {
2130 int subimage = 0;
2131 int texindex = state.texindex++ % state.texcount;
2132
2133 if (state.texowners[texindex].w == tile->w) {
2134 if (state.texowners[texindex].h >= slice->h) {
2135 subimage = 1;
2136 }
2137 else {
2138 state.texowners[texindex].h = slice->h;
2139 }
2140 }
2141 else {
2142 state.texowners[texindex].h = slice->h;
2143 }
2144
2145 state.texowners[texindex].w = tile->w;
2146 state.texowners[texindex].slice = slice;
2147 slice->texindex = texindex;
2148
2149 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2150 if (tile->pbo) {
2151 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2152 texdata = 0;
2153 }
2154 else {
2155 texdata = tile->pixmap->samples;
2156 }
2157 if (subimage) {
2158 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2159 0,
2160 0,
2161 0,
2162 tile->w,
2163 slice->h,
2164 state.texform,
2165 state.texty,
2166 texdata+offset
2167 );
2168 }
2169 else {
2170 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2171 0,
2172 state.texiform,
2173 tile->w,
2174 slice->h,
2175 0,
2176 state.texform,
2177 state.texty,
2178 texdata+offset
2179 );
2180 }
2181 if (tile->pbo) {
2182 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2183 }
2184 }
2185 }
2186
2187 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2188 {
2189 CAMLparam2 (args_v, ptr_v);
2190 int dispx = Int_val (Field (args_v, 0));
2191 int dispy = Int_val (Field (args_v, 1));
2192 int dispw = Int_val (Field (args_v, 2));
2193 int disph = Int_val (Field (args_v, 3));
2194 int tilex = Int_val (Field (args_v, 4));
2195 int tiley = Int_val (Field (args_v, 5));
2196 char *s = String_val (ptr_v);
2197 struct tile *tile = parse_pointer ("ml_drawtile", s);
2198
2199 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2200 {
2201 int slicey, firstslice;
2202 struct slice *slice;
2203
2204 firstslice = tiley / tile->sliceheight;
2205 slice = &tile->slices[firstslice];
2206 slicey = tiley % tile->sliceheight;
2207
2208 while (disph > 0) {
2209 int dh;
2210
2211 dh = slice->h - slicey;
2212 dh = MIN (disph, dh);
2213 uploadslice (tile, slice);
2214
2215 glBegin (GL_QUADS);
2216 {
2217 glTexCoord2i (tilex, slicey);
2218 glVertex2i (dispx, dispy);
2219
2220 glTexCoord2i (tilex+dispw, slicey);
2221 glVertex2i (dispx+dispw, dispy);
2222
2223 glTexCoord2i (tilex+dispw, slicey+dh);
2224 glVertex2i (dispx+dispw, dispy+dh);
2225
2226 glTexCoord2i (tilex, slicey+dh);
2227 glVertex2i (dispx, dispy+dh);
2228 }
2229 glEnd ();
2230
2231 dispy += dh;
2232 disph -= dh;
2233 slice++;
2234 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2235 slicey = 0;
2236 }
2237 }
2238 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2239 CAMLreturn (Val_unit);
2240 }
2241
2242 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2243 value xoff_v, value yoff_v,
2244 value li_v)
2245 {
2246 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2247 int xoff = Int_val (xoff_v);
2248 int yoff = Int_val (yoff_v);
2249 int noff = Int_val (Field (li_v, 0));
2250 char *targ = String_val (Field (li_v, 1));
2251 int tlen = caml_string_length (Field (li_v, 1));
2252 int hfsize = Int_val (Field (li_v, 2));
2253 char *s = String_val (ptr_v);
2254 int hlmask = Int_val (hlinks_v);
2255 struct page *page = parse_pointer ("ml_postprocess", s);
2256
2257 if (!page->u.ptr) {
2258 /* deal with loadpage failed pages */
2259 goto done;
2260 }
2261
2262 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2263 if (trylock ("ml_postprocess")) {
2264 noff = 0;
2265 goto done;
2266 }
2267 if (hlmask & 2) {
2268 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2269 noff = page->slinkcount;
2270 }
2271 showsel (page, xoff, yoff);
2272 unlock ("ml_postprocess");
2273
2274 done:
2275 CAMLreturn (Val_int (noff));
2276 }
2277
2278 static fz_link *getlink (struct page *page, int x, int y)
2279 {
2280 fz_point p;
2281 fz_matrix ctm;
2282 fz_link *link, *links;
2283
2284 switch (page->type) {
2285 case DPDF:
2286 ctm = trimctm (page->u.pdfpage, page->pdimno);
2287 links = page->u.pdfpage->links;
2288 break;
2289
2290 case DXPS:
2291 ctm = fz_identity;
2292 links = page->u.xpspage->links;
2293 break;
2294
2295 default:
2296 return NULL;
2297 }
2298 p.x = x;
2299 p.y = y;
2300
2301 ctm = fz_concat (ctm, state.pagedims[page->pdimno].ctm);
2302 ctm = fz_invert_matrix (ctm);
2303 p = fz_transform_point (ctm, p);
2304
2305 for (link = links; link; link = link->next) {
2306 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2307 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2308 return link;
2309 }
2310 }
2311 }
2312 return NULL;
2313 }
2314
2315 static void ensuretext (struct page *page)
2316 {
2317 if (state.gen != page->tgen) {
2318 droptext (page);
2319 page->tgen = state.gen;
2320 }
2321 if (!page->text) {
2322 fz_device *tdev;
2323
2324 page->text = fz_new_text_page (state.ctx, fz_infinite_rect);
2325 page->sheet = fz_new_text_sheet (state.ctx);
2326 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2327 fz_run_display_list (page->dlist,
2328 tdev,
2329 pagectm (page),
2330 fz_infinite_bbox, NULL);
2331 qsort (page->text->blocks, page->text->len,
2332 sizeof (*page->text->blocks), compareblocks);
2333 fz_free_device (tdev);
2334 }
2335 }
2336
2337 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2338 {
2339 CAMLparam2 (start_page_v, dir_v);
2340 CAMLlocal1 (ret_v);
2341 int i, dir = Int_val (dir_v);
2342 int start_page = Int_val (start_page_v);
2343 int end_page = dir > 0 ? state.pagecount : -1;
2344
2345 ret_v = Val_int (0);
2346 if (!(state.type == DPDF || state.type == DXPS)) {
2347 goto done;
2348 }
2349
2350 lock ("ml_findpage_with_links");
2351 for (i = start_page + dir; i != end_page; i += dir) {
2352 int found;
2353
2354 switch (state.type) {
2355 case DPDF:
2356 {
2357 pdf_page *page = NULL;
2358
2359 fz_try (state.ctx) {
2360 page = pdf_load_page (state.u.pdf, i);
2361 found = !!page->links;
2362 }
2363 fz_catch (state.ctx) {
2364 found = 0;
2365 }
2366 if (page) {
2367 freepdfpage (page);
2368 }
2369 }
2370 break;
2371 case DXPS:
2372 {
2373 xps_page *page = xps_load_page (state.u.xps, i);
2374 found = !!page->links;
2375 freexpspage (page);
2376 }
2377 break;
2378
2379 default:
2380 ARSERT ("invalid document type");
2381 }
2382
2383 if (found) {
2384 ret_v = caml_alloc_small (1, 1);
2385 Field (ret_v, 0) = Val_int (i);
2386 goto unlock;
2387 }
2388 }
2389 unlock:
2390 unlock ("ml_findpage_with_links");
2391
2392 done:
2393 CAMLreturn (ret_v);
2394 }
2395
2396 enum { dir_first, dir_last};
2397 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2398
2399 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2400 {
2401 CAMLparam2 (ptr_v, dir_v);
2402 CAMLlocal2 (ret_v, pos_v);
2403 struct page *page;
2404 int dirtag, i, slinkindex;
2405 struct slink *found = NULL ,*slink;
2406 char *s = String_val (ptr_v);
2407
2408 page = parse_pointer ("ml_findlink", s);
2409 ret_v = Val_int (0);
2410 if (trylock ("ml_findlink")) {
2411 goto done;
2412 }
2413
2414 ensureslinks (page);
2415
2416 if (Is_block (dir_v)) {
2417 dirtag = Tag_val (dir_v);
2418 switch (dirtag) {
2419 case dir_first_visible:
2420 {
2421 int x0, y0, dir, first_index, last_index;
2422
2423 pos_v = Field (dir_v, 0);
2424 x0 = Int_val (Field (pos_v, 0));
2425 y0 = Int_val (Field (pos_v, 1));
2426 dir = Int_val (Field (pos_v, 2));
2427
2428 if (dir >= 0) {
2429 dir = 1;
2430 first_index = 0;
2431 last_index = page->slinkcount;
2432 }
2433 else {
2434 first_index = page->slinkcount - 1;
2435 last_index = -1;
2436 }
2437
2438 for (i = first_index; i != last_index; i += dir) {
2439 slink = &page->slinks[i];
2440 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2441 found = slink;
2442 break;
2443 }
2444 }
2445 }
2446 break;
2447
2448 case dir_left:
2449 slinkindex = Int_val (Field (dir_v, 0));
2450 found = &page->slinks[slinkindex];
2451 for (i = slinkindex - 1; i >= 0; --i) {
2452 slink = &page->slinks[i];
2453 if (slink->bbox.x0 < found->bbox.x0) {
2454 found = slink;
2455 break;
2456 }
2457 }
2458 break;
2459
2460 case dir_right:
2461 slinkindex = Int_val (Field (dir_v, 0));
2462 found = &page->slinks[slinkindex];
2463 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2464 slink = &page->slinks[i];
2465 if (slink->bbox.x0 > found->bbox.x0) {
2466 found = slink;
2467 break;
2468 }
2469 }
2470 break;
2471
2472 case dir_down:
2473 slinkindex = Int_val (Field (dir_v, 0));
2474 found = &page->slinks[slinkindex];
2475 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2476 slink = &page->slinks[i];
2477 if (slink->bbox.y0 >= found->bbox.y0) {
2478 found = slink;
2479 break;
2480 }
2481 }
2482 break;
2483
2484 case dir_up:
2485 slinkindex = Int_val (Field (dir_v, 0));
2486 found = &page->slinks[slinkindex];
2487 for (i = slinkindex - 1; i >= 0; --i) {
2488 slink = &page->slinks[i];
2489 if (slink->bbox.y0 <= found->bbox.y0) {
2490 found = slink;
2491 break;
2492 }
2493 }
2494 break;
2495 }
2496 }
2497 else {
2498 dirtag = Int_val (dir_v);
2499 switch (dirtag) {
2500 case dir_first:
2501 found = page->slinks;
2502 break;
2503
2504 case dir_last:
2505 if (page->slinks) {
2506 found = page->slinks + (page->slinkcount - 1);
2507 }
2508 break;
2509 }
2510 }
2511 if (found) {
2512 ret_v = caml_alloc_small (2, 1);
2513 Field (ret_v, 0) = Val_int (found - page->slinks);
2514 }
2515
2516 unlock ("ml_findlink");
2517 done:
2518 CAMLreturn (ret_v);
2519 }
2520
2521 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2522
2523 #define LINKTOVAL \
2524 { \
2525 int pageno; \
2526 \
2527 switch (link->dest.kind) { \
2528 case FZ_LINK_GOTO: \
2529 { \
2530 fz_point p; \
2531 \
2532 pageno = link->dest.ld.gotor.page; \
2533 p.x = 0; \
2534 p.y = 0; \
2535 \
2536 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2537 p.y = link->dest.ld.gotor.lt.y; \
2538 p = fz_transform_point (pdim->lctm, p); \
2539 } \
2540 tup_v = caml_alloc_tuple (2); \
2541 ret_v = caml_alloc_small (1, ugoto); \
2542 Field (tup_v, 0) = Val_int (pageno); \
2543 Field (tup_v, 1) = Val_int (p.y); \
2544 Field (ret_v, 0) = tup_v; \
2545 } \
2546 break; \
2547 \
2548 case FZ_LINK_URI: \
2549 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2550 ret_v = caml_alloc_small (1, uuri); \
2551 Field (ret_v, 0) = str_v; \
2552 break; \
2553 \
2554 case FZ_LINK_LAUNCH: \
2555 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2556 ret_v = caml_alloc_small (1, ulaunch); \
2557 Field (ret_v, 0) = str_v; \
2558 break; \
2559 \
2560 case FZ_LINK_NAMED: \
2561 str_v = caml_copy_string (link->dest.ld.named.named); \
2562 ret_v = caml_alloc_small (1, unamed); \
2563 Field (ret_v, 0) = str_v; \
2564 break; \
2565 \
2566 case FZ_LINK_GOTOR: \
2567 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2568 pageno = link->dest.ld.gotor.page; \
2569 tup_v = caml_alloc_tuple (2); \
2570 ret_v = caml_alloc_small (1, uremote); \
2571 Field (tup_v, 0) = str_v; \
2572 Field (tup_v, 1) = Val_int (pageno); \
2573 Field (ret_v, 0) = tup_v; \
2574 break; \
2575 \
2576 default: \
2577 { \
2578 char buf[80]; \
2579 \
2580 snprintf (buf, sizeof (buf), \
2581 "unhandled link kind %d", link->dest.kind); \
2582 str_v = caml_copy_string (buf); \
2583 ret_v = caml_alloc_small (1, uunexpected); \
2584 Field (ret_v, 0) = str_v; \
2585 } \
2586 break; \
2587 } \
2588 }
2589
2590 CAMLprim value ml_getlink (value ptr_v, value n_v)
2591 {
2592 CAMLparam2 (ptr_v, n_v);
2593 CAMLlocal3 (ret_v, tup_v, str_v);
2594 fz_link *link;
2595 struct page *page;
2596 struct pagedim *pdim;
2597 char *s = String_val (ptr_v);
2598
2599 ret_v = Val_int (0);
2600 if (trylock ("ml_getlink")) {
2601 goto done;
2602 }
2603
2604 page = parse_pointer ("ml_getlink", s);
2605 ensureslinks (page);
2606 pdim = &state.pagedims[page->pdimno];
2607 link = page->slinks[Int_val (n_v)].link;
2608 LINKTOVAL;
2609
2610 unlock ("ml_getlink");
2611 done:
2612 CAMLreturn (ret_v);
2613 }
2614
2615 CAMLprim value ml_getlinkcount (value ptr_v)
2616 {
2617 CAMLparam1 (ptr_v);
2618 struct page *page;
2619 char *s = String_val (ptr_v);
2620
2621 page = parse_pointer ("ml_getlinkcount", s);
2622 CAMLreturn (Val_int (page->slinkcount));
2623 }
2624
2625 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2626 {
2627 CAMLparam2 (ptr_v, n_v);
2628 CAMLlocal1 (ret_v);
2629 struct page *page;
2630 struct slink *slink;
2631 char *s = String_val (ptr_v);
2632
2633 page = parse_pointer ("ml_getlinkrect", s);
2634 ret_v = caml_alloc_tuple (4);
2635 if (trylock ("ml_getlinkrect")) {
2636 Field (ret_v, 0) = Val_int (0);
2637 Field (ret_v, 1) = Val_int (0);
2638 Field (ret_v, 2) = Val_int (0);
2639 Field (ret_v, 3) = Val_int (0);
2640 goto done;
2641 }
2642 ensureslinks (page);
2643
2644 slink = &page->slinks[Int_val (n_v)];
2645 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2646 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2647 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2648 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2649 unlock ("ml_getlinkrect");
2650
2651 done:
2652 CAMLreturn (ret_v);
2653 }
2654
2655 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2656 {
2657 CAMLparam3 (ptr_v, x_v, y_v);
2658 CAMLlocal3 (ret_v, tup_v, str_v);
2659 fz_link *link;
2660 struct page *page;
2661 char *s = String_val (ptr_v);
2662 int x = Int_val (x_v), y = Int_val (y_v);
2663 struct pagedim *pdim;
2664
2665 ret_v = Val_int (0);
2666 if (trylock ("ml_whatsunder")) {
2667 goto done;
2668 }
2669
2670 page = parse_pointer ("ml_whatsunder", s);
2671 pdim = &state.pagedims[page->pdimno];
2672 x += pdim->bounds.x0;
2673 y += pdim->bounds.y0;
2674 link = getlink (page, x, y);
2675 if (link) {
2676 LINKTOVAL;
2677 }
2678 else {
2679 fz_rect *b;
2680 fz_text_block *block;
2681
2682 ensuretext (page);
2683 for (block = page->text->blocks;
2684 block < page->text->blocks + page->text->len;
2685 ++block) {
2686 fz_text_line *line;
2687
2688 b = &block->bbox;
2689 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2690 continue;
2691
2692 for (line = block->lines;
2693 line < block->lines + block->len;
2694 ++line) {
2695 fz_text_span *span;
2696
2697 b = &line->bbox;
2698 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2699 continue;
2700
2701 for (span = line->spans;
2702 span < line->spans + line->len;
2703 ++span) {
2704 fz_text_char *ch;
2705
2706 b = &span->bbox;
2707 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2708 continue;
2709
2710 for (ch = span->text; ch < span->text + span->len; ++ch) {
2711 b = &ch->bbox;
2712
2713 if (x >= b->x0 && x <= b->x1
2714 && y >= b->y0 && y <= b->y1) {
2715 const char *n2 =
2716 span->style->font && span->style->font->name
2717 ? span->style->font->name
2718 : "Span has no font name"
2719 ;
2720 FT_FaceRec *face = span->style->font->ft_face;
2721 if (face && face->family_name) {
2722 char *s;
2723 char *n1 = face->family_name;
2724 size_t l1 = strlen (n1);
2725 size_t l2 = strlen (n2);
2726
2727 if (l1 != l2 || memcmp (n1, n2, l1)) {
2728 s = malloc (l1 + l2 + 2);
2729 if (s) {
2730 memcpy (s, n2, l2);
2731 s[l2] = '=';
2732 memcpy (s + l2 + 1, n1, l1 + 1);
2733 str_v = caml_copy_string (s);
2734 free (s);
2735 }
2736 }
2737 }
2738 if (str_v == 0) {
2739 str_v = caml_copy_string (n2);
2740 }
2741 ret_v = caml_alloc_small (1, utext);
2742 Field (ret_v, 0) = str_v;
2743 goto unlock;
2744 }
2745 }
2746 }
2747 }
2748 }
2749 }
2750 unlock:
2751 unlock ("ml_whatsunder");
2752
2753 done:
2754 CAMLreturn (ret_v);
2755 }
2756
2757 CAMLprim value ml_seltext (value ptr_v, value rect_v)
2758 {
2759 CAMLparam2 (ptr_v, rect_v);
2760 fz_rect *b;
2761 struct page *page;
2762 struct pagedim *pdim;
2763 int i, x0, x1, y0, y1;
2764 char *s = String_val (ptr_v);
2765 int fi = 0, li = 0;
2766 fz_text_block *block;
2767 fz_text_span *span, *fspan, *lspan;
2768 fz_text_line *line, *fline = NULL, *lline = NULL;
2769
2770 if (trylock ("ml_seltext")) {
2771 goto done;
2772 }
2773
2774 page = parse_pointer ("ml_seltext", s);
2775 ensuretext (page);
2776
2777 pdim = &state.pagedims[page->pdimno];
2778 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
2779 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
2780 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
2781 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
2782
2783 if (0) {
2784 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2785 glColor3ub (128, 128, 128);
2786 glRecti (x0, y0, x1, y1);
2787 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2788 }
2789
2790 fspan = lspan = NULL;
2791
2792 for (block = page->text->blocks;
2793 block < page->text->blocks + page->text->len;
2794 ++block) {
2795 for (line = block->lines;
2796 line < block->lines + block->len;
2797 ++line) {
2798 for (span = line->spans;
2799 span < line->spans + line->len;
2800 ++span) {
2801 for (i = 0; i < span->len; ++i) {
2802 b = &span->text[i].bbox;
2803 int selected = 0;
2804
2805 if (x0 >= b->x0 && x0 <= b->x1
2806 && y0 >= b->y0 && y0 <= b->y1) {
2807 fspan = span;
2808 fline = line;
2809 fi = i;
2810 selected = 1;
2811 }
2812 if (x1 >= b->x0 && x1 <= b->x1
2813 && y1 >= b->y0 && y1 <= b->y1) {
2814 lspan = span;
2815 lline = line;
2816 li = i;
2817 selected = 1;
2818 }
2819 if (0 && selected) {
2820 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2821 glColor3ub (128, 128, 128);
2822 glRecti (b->x0, b->y0, b->x1, b->y1);
2823 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2824 }
2825 }
2826 }
2827 }
2828 }
2829 if (y1 < y0 || x1 < x0) {
2830 int swap = 0;
2831
2832 if (fspan == lspan) {
2833 swap = 1;
2834 }
2835 else {
2836 if (y1 < y0) {
2837 if (fline != lline) {
2838 swap = 1;
2839 }
2840 }
2841 }
2842
2843 if (swap) {
2844 i = fi;
2845 span = fspan;
2846
2847 fi = li;
2848 fspan = lspan;
2849
2850 li = i;
2851 lspan = span;
2852 }
2853 }
2854
2855 page->fmark.i = fi;
2856 page->fmark.span = fspan;
2857
2858 page->lmark.i = li;
2859 page->lmark.span = lspan;
2860
2861 unlock ("ml_seltext");
2862
2863 done:
2864 CAMLreturn (Val_unit);
2865 }
2866
2867 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
2868 {
2869 char buf[4];
2870 int i, len, ret;
2871
2872 for (i = a; i <= b; ++i) {
2873 len = fz_runetochar (buf, span->text[i].c);
2874 ret = fwrite (buf, len, 1, f);
2875
2876 if (ret != 1) {
2877 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
2878 len, ret, strerror (errno));
2879 return -1;
2880 }
2881 }
2882 return 0;
2883 }
2884
2885 #ifdef __CYGWIN__
2886 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
2887 {
2888 caml_failwith ("ml_popen not implemented under Cygwin");
2889 }
2890 #else
2891 CAMLprim value ml_popen (value command_v, value fds_v)
2892 {
2893 CAMLparam2 (command_v, fds_v);
2894 CAMLlocal2 (l_v, tup_v);
2895 int ret;
2896 char *msg = NULL;
2897 value earg_v = Nothing;
2898 posix_spawnattr_t attr;
2899 posix_spawn_file_actions_t fa;
2900 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
2901
2902 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
2903 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
2904 }
2905
2906 if ((ret = posix_spawnattr_init (&attr)) != 0) {
2907 msg = "posix_spawnattr_init";
2908 goto fail1;
2909 }
2910
2911 #ifdef POSIX_SPAWN_USEVFORK
2912 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
2913 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
2914 goto fail;
2915 }
2916 #endif
2917
2918 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
2919 int fd1, fd2;
2920
2921 tup_v = Field (l_v, 0);
2922 fd1 = Int_val (Field (tup_v, 0));
2923 fd2 = Int_val (Field (tup_v, 1));
2924 if (fd2 < 0) {
2925 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
2926 msg = "posix_spawn_file_actions_addclose";
2927 earg_v = tup_v;
2928 goto fail;
2929 }
2930 }
2931 else {
2932 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
2933 msg = "posix_spawn_file_actions_adddup2";
2934 earg_v = tup_v;
2935 goto fail;
2936 }
2937 }
2938 }
2939
2940 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
2941 msg = "posix_spawn";
2942 goto fail;
2943 }
2944
2945 fail:
2946 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
2947 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
2948 }
2949
2950 fail1:
2951 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
2952 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
2953 strerror (ret));
2954 }
2955
2956 if (msg)
2957 unix_error (ret, msg, earg_v);
2958
2959 CAMLreturn (Val_unit);
2960 }
2961 #endif
2962
2963 CAMLprim value ml_copysel (value fd_v, value ptr_v)
2964 {
2965 CAMLparam1 (ptr_v);
2966 FILE *f;
2967 int seen = 0;
2968 struct page *page;
2969 fz_text_line *line;
2970 fz_text_span *span;
2971 fz_text_block *block;
2972 int fd = Int_val (fd_v);
2973 char *s = String_val (ptr_v);
2974
2975 if (trylock ("ml_copysel")) {
2976 goto done;
2977 }
2978
2979 page = parse_pointer ("ml_sopysel", s);
2980
2981 if (!page->fmark.span || !page->lmark.span) {
2982 fprintf (stderr, "nothing to copy\n");
2983 goto unlock;
2984 }
2985
2986 f = fdopen (fd, "w");
2987 if (!f) {
2988 fprintf (stderr, "failed to fopen sel pipe: %s\n",
2989 strerror (errno));
2990 f = stdout;
2991 }
2992
2993 for (block = page->text->blocks;
2994 block < page->text->blocks + page->text->len;
2995 ++block) {
2996 for (line = block->lines;
2997 line < block->lines + block->len;
2998 ++line) {
2999 for (span = line->spans;
3000 span < line->spans + line->len;
3001 ++span) {
3002 int a, b;
3003
3004 seen |= span == page->fmark.span || span == page->lmark.span;
3005 a = span == page->fmark.span ? page->fmark.i : 0;
3006 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3007
3008 if (seen) {
3009 if (pipespan (f, span, a, b)) {
3010 goto close;
3011 }
3012 if (span == line->spans + line->len - 1) {
3013 if (putc ('\n', f) == EOF) {
3014 fprintf (stderr,
3015 "failed break line on sel pipe: %s\n",
3016 strerror (errno));
3017 goto close;
3018 }
3019 }
3020 if (span == page->lmark.span) {
3021 goto endloop;
3022 }
3023 }
3024 }
3025 }
3026 }
3027 endloop:
3028 page->lmark.span = NULL;
3029 page->fmark.span = NULL;
3030
3031 close:
3032 if (f != stdout) {
3033 int ret = fclose (f);
3034 fd = -1;
3035 if (ret == -1) {
3036 if (errno != ECHILD) {
3037 fprintf (stderr, "failed to close sel pipe: %s\n",
3038 strerror (errno));
3039 }
3040 }
3041 }
3042 unlock:
3043 unlock ("ml_copysel");
3044
3045 done:
3046 if (fd >= 0) {
3047 if (close (fd)) {
3048 fprintf (stderr, "failed to close sel pipe: %s\n",
3049 strerror (errno));
3050 }
3051 }
3052 CAMLreturn (Val_unit);
3053 }
3054
3055 CAMLprim value ml_getpdimrect (value pagedimno_v)
3056 {
3057 CAMLparam1 (pagedimno_v);
3058 CAMLlocal1 (ret_v);
3059 int pagedimno = Int_val (pagedimno_v);
3060 fz_rect box;
3061
3062 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3063 if (trylock ("ml_getpdimrect")) {
3064 box = fz_empty_rect;
3065 }
3066 else {
3067 box = state.pagedims[pagedimno].mediabox;
3068 unlock ("ml_getpdimrect");
3069 }
3070
3071 Store_double_field (ret_v, 0, box.x0);
3072 Store_double_field (ret_v, 1, box.x1);
3073 Store_double_field (ret_v, 2, box.y0);
3074 Store_double_field (ret_v, 3, box.y1);
3075
3076 CAMLreturn (ret_v);
3077 }
3078
3079 static double getmaxw (void)
3080 {
3081 int i;
3082 struct pagedim *p;
3083 double maxw = 0.0;
3084
3085 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3086 double x0, x1, w;
3087
3088 x0 = MIN (p->mediabox.x0, p->mediabox.x1);
3089 x1 = MAX (p->mediabox.x0, p->mediabox.x1);
3090
3091 w = x1 - x0;
3092 maxw = MAX (w, maxw);
3093 }
3094 return maxw;
3095 }
3096
3097 CAMLprim value ml_getmaxw (value unit_v)
3098 {
3099 CAMLparam1 (unit_v);
3100 CAMLlocal1 (ret_v);
3101 double maxw = 0.0;
3102
3103 if (trylock ("ml_getmaxw")) {
3104 goto done;
3105 }
3106 maxw = getmaxw ();
3107 unlock ("ml_getmaxw");
3108 done:
3109 ret_v = caml_copy_double (maxw);
3110 CAMLreturn (ret_v);
3111 }
3112
3113 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3114 value dw_v, value cols_v)
3115 {
3116 CAMLparam3 (winw_v, winh_v, dw_v);
3117 CAMLlocal1 (ret_v);
3118 int i;
3119 double zoom = 1.0;
3120 double maxw = 0.0, maxh = 0.0;
3121 struct pagedim *p;
3122 double winw = Int_val (winw_v);
3123 double winh = Int_val (winh_v);
3124 double dw = Int_val (dw_v);
3125 double cols = Int_val (cols_v);
3126 double pw = 1.0, ph = 1.0, aspect;
3127
3128 if (trylock ("ml_zoom_for_height")) {
3129 goto done;
3130 }
3131
3132 if (state.proportional) {
3133 maxw = getmaxw () / cols;
3134 }
3135
3136 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3137 double x0, x1, y0, y1, w, h, scaledh, scale;
3138 fz_rect rect;
3139
3140 rect = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
3141 p->mediabox);
3142 x0 = MIN (rect.x0, rect.x1);
3143 x1 = MAX (rect.x0, rect.x1);
3144 y0 = MIN (rect.y0, rect.y1);
3145 y1 = MAX (rect.y0, rect.y1);
3146
3147 w = (x1 - x0) / cols;
3148 h = y1 - y0;
3149
3150 if (state.proportional) {
3151 scale = w / maxw;
3152 scaledh = h * scale;
3153 }
3154 else {
3155 scale = 1.0;
3156 scaledh = h;
3157 }
3158
3159 if (scaledh > maxh) {
3160 maxh = scaledh;
3161 ph = scaledh;
3162 pw = w * scale;
3163 }
3164 }
3165
3166 aspect = pw / ph;
3167 zoom = (winh * aspect + dw) / winw;
3168
3169 unlock ("ml_zoom_for_height");
3170 done:
3171 ret_v = caml_copy_double (zoom);
3172 CAMLreturn (ret_v);
3173 }
3174
3175 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3176 {
3177 CAMLparam4 (pt_v, x_v, y_v, string_v);
3178 CAMLlocal1 (ret_v);
3179 int pt = Int_val(pt_v);
3180 int x = Int_val (x_v);
3181 int y = Int_val (y_v);
3182 double w;
3183
3184 w = draw_string (state.face, pt, x, y, String_val (string_v));
3185 ret_v = caml_copy_double (w);
3186 CAMLreturn (ret_v);
3187 }
3188
3189 CAMLprim value ml_measure_string (value pt_v, value string_v)
3190 {
3191 CAMLparam2 (pt_v, string_v);
3192 CAMLlocal1 (ret_v);
3193 int pt = Int_val (pt_v);
3194 double w;
3195
3196 w = measure_string (state.face, pt, String_val (string_v));
3197 ret_v = caml_copy_double (w);
3198 CAMLreturn (ret_v);
3199 }
3200
3201 CAMLprim value ml_getpagebox (value opaque_v)
3202 {
3203 CAMLparam1 (opaque_v);
3204 CAMLlocal1 (ret_v);
3205 fz_bbox bbox;
3206 fz_device *dev;
3207 char *s = String_val (opaque_v);
3208 struct page *page = parse_pointer ("ml_getpagebox", s);
3209
3210 ret_v = caml_alloc_tuple (4);
3211 dev = fz_new_bbox_device (state.ctx, &bbox);
3212 dev->hints |= FZ_IGNORE_SHADE;
3213
3214 switch (page->type) {
3215 case DPDF:
3216 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, pagectm (page), NULL);
3217 break;
3218
3219 case DXPS:
3220 xps_run_page (state.u.xps, page->u.xpspage, dev, pagectm (page), NULL);
3221 break;
3222
3223 default:
3224 bbox = fz_infinite_bbox;
3225 break;
3226 }
3227
3228 fz_free_device (dev);
3229 Field (ret_v, 0) = Val_int (bbox.x0);
3230 Field (ret_v, 1) = Val_int (bbox.y0);
3231 Field (ret_v, 2) = Val_int (bbox.x1);
3232 Field (ret_v, 3) = Val_int (bbox.y1);
3233
3234 CAMLreturn (ret_v);
3235 }
3236
3237 CAMLprim value ml_setaalevel (value level_v)
3238 {
3239 CAMLparam1 (level_v);
3240
3241 state.aalevel = Int_val (level_v);
3242 CAMLreturn (Val_unit);
3243 }
3244
3245 #undef pixel
3246 #include <X11/Xlib.h>
3247 #include <GL/glx.h>
3248
3249 static struct {
3250 Display *dpy;
3251 GLXContext ctx;
3252 GLXDrawable drawable;
3253 } glx;
3254
3255 #include "keysym2ucs.c"
3256
3257 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3258 {
3259 CAMLparam1 (keysym_v);
3260 CAMLlocal1 (str_v);
3261 KeySym keysym = Int_val (keysym_v);
3262 Rune rune;
3263 int len;
3264 char buf[5];
3265
3266 rune = keysym2ucs (keysym);
3267 len = fz_runetochar (buf, rune);
3268 buf[len] = 0;
3269 str_v = caml_copy_string (buf);
3270 CAMLreturn (str_v);
3271 }
3272
3273 CAMLprim value ml_glx (value win_v)
3274 {
3275 CAMLparam1 (win_v);
3276 XVisualInfo *visual;
3277 int screen, wid = Int_val (win_v);
3278 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3279
3280 glx.dpy = XOpenDisplay (NULL);
3281 if (!glx.dpy) {
3282 caml_failwith ("XOpenDisplay");
3283 }
3284
3285 screen = DefaultScreen (glx.dpy);
3286 visual = glXChooseVisual (glx.dpy, screen, attributes);
3287 if (!visual) {
3288 XCloseDisplay (glx.dpy);
3289 glx.dpy = NULL;
3290 caml_failwith ("glXChooseVisual");
3291 }
3292
3293 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3294 XFree (visual);
3295 if (!glx.ctx) {
3296 XCloseDisplay (glx.dpy);
3297 glx.dpy = NULL;
3298 caml_failwith ("glXCreateContext");
3299 }
3300
3301 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3302 glXDestroyContext (glx.dpy, glx.ctx);
3303 XCloseDisplay (glx.dpy);
3304 glx.dpy = NULL;
3305 glx.ctx = NULL;
3306 caml_failwith ("glXMakeCurrent");
3307 }
3308 glx.drawable = wid;
3309 CAMLreturn (Val_unit);
3310 }
3311
3312 CAMLprim value ml_swapb (value unit_v)
3313 {
3314 CAMLparam1 (unit_v);
3315 glXSwapBuffers (glx.dpy, glx.drawable);
3316 CAMLreturn (Val_unit);
3317 }
3318
3319 CAMLprim value ml_glxsync (value unit_v)
3320 {
3321 CAMLparam1 (unit_v);
3322 if (glx.dpy && glx.ctx) {
3323 glXWaitX ();
3324 glXWaitGL ();
3325 }
3326 CAMLreturn (Val_unit);
3327 }
3328
3329 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3330 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3331
3332 CAMLprim value ml_platform (value unit_v)
3333 {
3334 CAMLparam1 (unit_v);
3335 int platid = piunknown;
3336
3337 #if defined __linux__
3338 platid = pilinux;
3339 #elif defined __CYGWIN__
3340 platid = picygwin;
3341 #elif defined __DragonFly__
3342 platid = pidragonflybsd;
3343 #elif defined __FreeBSD__
3344 platid = pifreebsd;
3345 #elif defined __OpenBSD__
3346 platid = piopenbsd;
3347 #elif defined __NetBSD__
3348 platid = pinetbsd;
3349 #elif defined __sun__
3350 platid = pisun;
3351 #elif defined __APPLE__
3352 platid = piosx;
3353 #endif
3354 CAMLreturn (Val_int (platid));
3355 }
3356
3357 CAMLprim value ml_cloexec (value fd_v)
3358 {
3359 CAMLparam1 (fd_v);
3360 int fd = Int_val (fd_v);
3361
3362 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3363 uerror ("fcntl", Nothing);
3364 }
3365 CAMLreturn (Val_unit);
3366 }
3367
3368 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3369 {
3370 CAMLparam2 (w_v, h_v);
3371 CAMLlocal1 (ret_v);
3372 struct pbo *pbo;
3373 int w = Int_val (w_v);
3374 int h = Int_val (h_v);
3375 int cs = Int_val (cs_v);
3376
3377 if (state.pbo_usable) {
3378 pbo = calloc (sizeof (*pbo), 1);
3379 if (!pbo) {
3380 err (1, "calloc pbo");
3381 }
3382
3383 switch (cs) {
3384 case 0:
3385 case 1:
3386 pbo->size = w*h*4;
3387 break;
3388 case 2:
3389 pbo->size = w*h*2;
3390 break;
3391 default:
3392 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3393 }
3394
3395 state.glGenBuffersARB (1, &pbo->id);
3396 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3397 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3398 NULL, GL_STREAM_DRAW);
3399 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3400 GL_READ_WRITE);
3401 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3402 if (!pbo->ptr) {
3403 fprintf (stderr, "glMapBufferARB failed: %#x", glGetError ());
3404 state.glDeleteBuffersARB (1, &pbo->id);
3405 free (pbo);
3406 ret_v = caml_copy_string ("0");
3407 }
3408 else {
3409 int res;
3410 char *s;
3411
3412 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3413 if (res < 0) {
3414 err (1, "snprintf %" FMT_ptr " failed", pbo);
3415 }
3416 s = malloc (res+1);
3417 if (!s) {
3418 err (1, "malloc %d bytes failed", res+1);
3419 }
3420 res = sprintf (s, "%" FMT_ptr, pbo);
3421 if (res < 0) {
3422 err (1, "sprintf %" FMT_ptr " failed", pbo);
3423 }
3424 ret_v = caml_copy_string (s);
3425 free (s);
3426 }
3427 }
3428 else {
3429 ret_v = caml_copy_string ("0");
3430 }
3431 CAMLreturn (ret_v);
3432 }
3433
3434 CAMLprim value ml_freepbo (value s_v)
3435 {
3436 CAMLparam1 (s_v);
3437 char *s = String_val (s_v);
3438 struct tile *tile = parse_pointer ("ml_freepbo", s);
3439
3440 if (tile->pbo) {
3441 state.glDeleteBuffersARB (1, &tile->pbo->id);
3442 tile->pbo->id = -1;
3443 tile->pbo->ptr = NULL;
3444 tile->pbo->size = -1;
3445 }
3446 CAMLreturn (Val_unit);
3447 }
3448
3449 CAMLprim value ml_unmappbo (value s_v)
3450 {
3451 CAMLparam1 (s_v);
3452 char *s = String_val (s_v);
3453 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3454
3455 if (tile->pbo) {
3456 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3457 state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB);
3458 tile->pbo->ptr = NULL;
3459 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3460 }
3461 CAMLreturn (Val_unit);
3462 }
3463
3464 static void setuppbo (void)
3465 {
3466 #define GGPA(n) *(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n)
3467 GGPA (glBindBufferARB);
3468 if (state.glBindBufferARB) {
3469 GGPA (glUnmapBufferARB);
3470 if (state.glUnmapBufferARB) {
3471 GGPA (glMapBufferARB);
3472 if (state.glMapBufferARB) {
3473 GGPA (glBufferDataARB);
3474 if (state.glBufferDataARB) {
3475 GGPA (glGenBuffersARB);
3476 if (state.glGenBuffersARB) {
3477 GGPA (glDeleteBuffersARB);
3478 if (state.glDeleteBuffersARB) {
3479 state.pbo_usable = 1;
3480 }
3481 }
3482 }
3483 }
3484 }
3485 }
3486 #undef GGPA
3487 }
3488
3489 CAMLprim value ml_pbo_usable (value unit_v)
3490 {
3491 CAMLparam1 (unit_v);
3492 CAMLreturn (Val_bool (state.pbo_usable));
3493 }
3494
3495 CAMLprim value ml_init (value pipe_v, value params_v)
3496 {
3497 CAMLparam2 (pipe_v, params_v);
3498 CAMLlocal2 (trim_v, fuzz_v);
3499 int ret;
3500 int texcount;
3501 char *fontpath;
3502 int colorspace;
3503 int mustoresize;
3504 int haspboext;
3505 struct sigaction sa;
3506
3507 state.cr = Int_val (Field (pipe_v, 0));
3508 state.cw = Int_val (Field (pipe_v, 1));
3509 state.rotate = Int_val (Field (params_v, 0));
3510 state.proportional = Bool_val (Field (params_v, 1));
3511 trim_v = Field (params_v, 2);
3512 texcount = Int_val (Field (params_v, 3));
3513 state.sliceheight = Int_val (Field (params_v, 4));
3514 mustoresize = Int_val (Field (params_v, 5));
3515 colorspace = Int_val (Field (params_v, 6));
3516 fontpath = String_val (Field (params_v, 7));
3517 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3518 if (!state.trimcachepath) {
3519 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
3520 strerror (errno));
3521 }
3522 haspboext = Bool_val (Field (params_v, 9));
3523
3524 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3525
3526 state.trimmargins = Bool_val (Field (trim_v, 0));
3527 fuzz_v = Field (trim_v, 1);
3528 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3529 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3530 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3531 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3532
3533 set_tex_params (colorspace);
3534
3535 if (*fontpath) {
3536 state.face = load_font (fontpath);
3537 }
3538 else {
3539 unsigned int len;
3540 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3541
3542 state.face = load_builtin_font (base, len);
3543 }
3544 if (!state.face) _exit (1);
3545
3546 realloctexts (texcount);
3547
3548 if (haspboext) {
3549 setuppbo ();
3550 }
3551
3552 #ifdef __CYGWIN__
3553 sa.sa_handler = SIG_IGN;
3554 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
3555 #else
3556 sa.sa_handler = SIG_DFL;
3557 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
3558 #endif
3559 if (sigemptyset (&sa.sa_mask)) {
3560 err (1, "sigemptyset");
3561 }
3562 if (sigaction (SIGCHLD, &sa, NULL)) {
3563 err (1, "sigaction");
3564 }
3565
3566 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
3567 if (ret) {
3568 errx (1, "pthread_create: %s", strerror (ret));
3569 }
3570
3571 CAMLreturn (Val_unit);
3572 }
PDF pager