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Fix text selection
[llpp.git] / link.c
blob2e928d5e7081cdd0f93e3a7ff76e043c0bd9094c
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 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_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 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
657 ctm = fz_concat (fz_rotate (-pdim->rotate), fz_scale (1, -1));
658 realbox = fz_transform_rect (ctm, pdim->mediabox);
659 ctm = fz_concat (ctm, fz_translate (-realbox.x0, -realbox.y0));
660 ctm = fz_concat (fz_invert_matrix (page->ctm), ctm);
661 }
662 else {
663 ctm = fz_identity;
664 }
665 pdim->tctm = ctm;
666 pdim->tctmready = 1;
667 }
668 return pdim->tctm;
669 }
670
671 static fz_matrix pagectm (struct page *page)
672 {
673 if (page->type == DPDF) {
674 return fz_concat (trimctm (page->u.pdfpage, page->pdimno),
675 state.pagedims[page->pdimno].ctm);
676 }
677 else {
678 fz_matrix ctm;
679 struct pagedim *pdim = &state.pagedims[page->pdimno];
680
681 ctm = state.pagedims[page->pdimno].ctm;
682 ctm = fz_concat (fz_translate (-pdim->mediabox.x0,
683 -pdim->mediabox.y0), ctm);
684 return ctm;
685 }
686 }
687
688 static void *loadpage (int pageno, int pindex)
689 {
690 fz_device *dev;
691 struct page *page = NULL;
692
693 page = calloc (sizeof (struct page), 1);
694 if (!page) {
695 err (1, "calloc page %d", pageno);
696 }
697
698 page->dlist = fz_new_display_list (state.ctx);
699 dev = fz_new_list_device (state.ctx, page->dlist);
700 fz_try (state.ctx) {
701 switch (state.type) {
702 case DPDF:
703 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
704 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, fz_identity, NULL);
705 page->freepage = freepdfpage;
706 break;
707
708 case DXPS:
709 page->u.xpspage = xps_load_page (state.u.xps, pageno);
710 xps_run_page (state.u.xps, page->u.xpspage, dev, fz_identity, NULL);
711 page->freepage = freexpspage;
712 break;
713
714 case DCBZ:
715 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
716 cbz_run_page (state.u.cbz, page->u.cbzpage, dev, fz_identity, NULL);
717 page->freepage = freecbzpage;
718 break;
719 }
720 }
721 fz_catch (state.ctx) {
722 page->u.ptr = NULL;
723 page->freepage = freeemptyxxxpage;
724 }
725 fz_free_device (dev);
726
727 page->pdimno = pindex;
728 page->pageno = pageno;
729 page->sgen = state.gen;
730 page->tgen = state.gen;
731 page->type = state.type;
732
733 return page;
734 }
735
736 static struct tile *alloctile (int h)
737 {
738 int i;
739 int slicecount;
740 size_t tilesize;
741 struct tile *tile;
742
743 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
744 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
745 tile = calloc (tilesize, 1);
746 if (!tile) {
747 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
748 }
749 for (i = 0; i < slicecount; ++i) {
750 int sh = MIN (h, state.sliceheight);
751 tile->slices[i].h = sh;
752 tile->slices[i].texindex = -1;
753 h -= sh;
754 }
755 tile->slicecount = slicecount;
756 tile->sliceheight = state.sliceheight;
757 return tile;
758 }
759
760 #ifdef OBSCURED_OPT
761 struct obs {
762 int cured;
763 fz_bbox b;
764 };
765
766 static void obs_fill_image (fz_device *dev, fz_image *image, fz_matrix ctm,
767 float alpha)
768 {
769 struct obs *obs = dev->user;
770
771 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
772 fz_bbox b = fz_round_rect (fz_transform_rect (ctm, fz_unit_rect));
773 b = fz_intersect_bbox (b, obs->b);
774 obs->cured = b.x0 == obs->b.x0
775 && b.x1 == obs->b.x1
776 && b.y0 == obs->b.y0
777 && b.y1 == obs->b.y1;
778 }
779 }
780
781 static int obscured (struct page *page, fz_bbox bbox)
782 {
783 fz_device dev;
784 struct obs obs;
785
786 memset (&dev, 0, sizeof (dev));
787 memset (&obs, 0, sizeof (obs));
788 dev.hints = 0;
789 dev.flags = 0;
790 dev.user = &obs;
791 dev.ctx = state.ctx;
792 dev.fill_image = obs_fill_image;
793 obs.b = bbox;
794 fz_run_display_list (page->dlist, &dev, pagectm (page),
795 fz_rect_from_bbox (bbox), NULL);
796 return obs.cured;
797 }
798 #define OBSCURED obscured
799 #else
800 #define OBSCURED(a, b) 0
801 #endif
802
803 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
804 struct pbo *pbo)
805 {
806 fz_bbox bbox;
807 fz_device *dev;
808 struct tile *tile;
809 struct pagedim *pdim;
810
811 tile = alloctile (h);
812 pdim = &state.pagedims[page->pdimno];
813
814 bbox = pdim->bounds;
815 bbox.x0 += x;
816 bbox.y0 += y;
817 bbox.x1 = bbox.x0 + w;
818 bbox.y1 = bbox.y0 + h;
819
820 if (state.pig) {
821 if (state.pig->w == w
822 && state.pig->h == h
823 && state.pig->colorspace == state.colorspace) {
824 tile->pixmap = state.pig;
825 tile->pixmap->x = bbox.x0;
826 tile->pixmap->y = bbox.y0;
827 }
828 else {
829 fz_drop_pixmap (state.ctx, state.pig);
830 }
831 state.pig = NULL;
832 }
833 if (!tile->pixmap) {
834 if (pbo) {
835 tile->pixmap =
836 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
837 bbox, pbo->ptr);
838 tile->pbo = pbo;
839 }
840 else {
841 tile->pixmap =
842 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, bbox);
843 }
844 }
845
846 tile->w = w;
847 tile->h = h;
848 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
849 clearpixmap (tile->pixmap);
850 }
851 dev = fz_new_draw_device (state.ctx, tile->pixmap);
852 fz_run_display_list (page->dlist, dev, pagectm (page),
853 fz_rect_from_bbox (bbox), NULL);
854 fz_free_device (dev);
855
856 return tile;
857 }
858
859 static void initpdims (void)
860 {
861 double start, end;
862 int pageno, trim, show;
863 FILE *trimf = NULL;
864 int trimw = 0;
865
866 start = now ();
867
868 if (state.trimmargins && state.trimcachepath) {
869 trimf = fopen (state.trimcachepath, "rb");
870 if (!trimf) {
871 trimf = fopen (state.trimcachepath, "wb");
872 trimw = 1;
873 }
874 }
875 for (pageno = 0; pageno < state.pagecount; ++pageno) {
876 int rotate = 0;
877 struct pagedim *p;
878 fz_rect mediabox;
879
880 switch (state.type) {
881 case DPDF: {
882 pdf_obj *pageobj = state.u.pdf->page_objs[pageno];
883
884 if (state.trimmargins) {
885 pdf_obj *obj;
886 pdf_page *page;
887
888 fz_try (state.ctx) {
889 page = pdf_load_page (state.u.pdf, pageno);
890 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
891 trim = state.trimanew || !obj;
892 if (trim) {
893 fz_rect rect;
894 fz_matrix ctm;
895 fz_device *dev;
896
897 dev = fz_new_bbox_device (state.ctx, &rect);
898 dev->hints |= FZ_IGNORE_SHADE;
899 ctm = fz_invert_matrix (page->ctm);
900 pdf_run_page (state.u.pdf, page, dev, fz_identity, NULL);
901 fz_free_device (dev);
902
903 rect.x0 += state.trimfuzz.x0;
904 rect.x1 += state.trimfuzz.x1;
905 rect.y0 += state.trimfuzz.y0;
906 rect.y1 += state.trimfuzz.y1;
907 rect = fz_transform_rect (ctm, rect);
908 rect = fz_intersect_rect (rect, page->mediabox);
909
910 if (fz_is_empty_rect (rect)) {
911 mediabox = page->mediabox;
912 }
913 else {
914 mediabox = rect;
915 }
916
917 obj = pdf_new_array (state.ctx, 4);
918 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x0));
919 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y0));
920 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x1));
921 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y1));
922 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
923 }
924 else {
925 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
926 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
927 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
928 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
929 }
930
931 rotate = page->rotate;
932 pdf_free_page (state.u.pdf, page);
933
934 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
935 if (show) {
936 printd ("progress %f Trimming %d",
937 (double) (pageno + 1) / state.pagecount,
938 pageno + 1);
939 }
940 }
941 fz_catch (state.ctx) {
942 fprintf (stderr, "failed to load page %d\n", pageno+1);
943 }
944 }
945 else {
946 fz_rect cropbox;
947
948 mediabox = pdf_to_rect (state.ctx,
949 pdf_dict_gets (pageobj, "MediaBox"));
950 if (fz_is_empty_rect (mediabox)) {
951 fprintf (stderr, "cannot find page size for page %d\n",
952 pageno+1);
953 mediabox.x0 = 0;
954 mediabox.y0 = 0;
955 mediabox.x1 = 612;
956 mediabox.y1 = 792;
957 }
958
959 cropbox = pdf_to_rect (state.ctx,
960 pdf_dict_gets (pageobj, "CropBox"));
961 if (!fz_is_empty_rect (cropbox)) {
962 mediabox = fz_intersect_rect (mediabox, cropbox);
963 }
964 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
965 }
966 break;
967 }
968
969 case DXPS:
970 {
971 xps_page *page;
972
973 fz_try (state.ctx) {
974 page = xps_load_page (state.u.xps, pageno);
975 mediabox = xps_bound_page (state.u.xps, page);
976 rotate = 0;
977 if (state.trimmargins) {
978 fz_rect rect;
979 fz_device *dev;
980
981 dev = fz_new_bbox_device (state.ctx, &rect);
982 dev->hints |= FZ_IGNORE_SHADE;
983 xps_run_page (state.u.xps, page, dev, fz_identity, NULL);
984 fz_free_device (dev);
985
986 rect.x0 += state.trimfuzz.x0;
987 rect.x1 += state.trimfuzz.x1;
988 rect.y0 += state.trimfuzz.y0;
989 rect.y1 += state.trimfuzz.y1;
990 rect = fz_intersect_rect (rect, mediabox);
991
992 if (!fz_is_empty_rect (rect)) {
993 mediabox = rect;
994 }
995 }
996 xps_free_page (state.u.xps, page);
997 printd ("progress %f loading %d",
998 (double) (pageno + 1) / state.pagecount,
999 pageno + 1);
1000 }
1001 fz_catch (state.ctx) {
1002 }
1003 }
1004 break;
1005
1006 case DCBZ:
1007 {
1008 rotate = 0;
1009 if (state.trimmargins && trimw) {
1010 cbz_page *page;
1011
1012 fz_try (state.ctx) {
1013 page = cbz_load_page (state.u.cbz, pageno);
1014 mediabox = cbz_bound_page (state.u.cbz, page);
1015 cbz_free_page (state.u.cbz, page);
1016 printd ("progress %f Trimming %d",
1017 (double) (pageno + 1) / state.pagecount,
1018 pageno + 1);
1019 }
1020 fz_catch (state.ctx) {
1021 fprintf (stderr, "failed to load page %d\n", pageno+1);
1022 mediabox.x0 = 0;
1023 mediabox.y0 = 0;
1024 mediabox.x1 = 900;
1025 mediabox.y1 = 900;
1026 }
1027 if (trimf) {
1028 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1029 if (n - 1) {
1030 err (1, "fwrite trim mediabox");
1031 }
1032 }
1033 }
1034 else {
1035 if (trimf) {
1036 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1037 if (n - 1) {
1038 err (1, "fread trim mediabox");
1039 }
1040 }
1041 else {
1042 mediabox.x0 = mediabox.y0 = 0;
1043 mediabox.x1 = 900;
1044 mediabox.y1 = 900;
1045 }
1046 }
1047 }
1048 break;
1049
1050 default:
1051 ARSERT (0 && state.type);
1052 }
1053
1054 if (state.pagedimcount == 0
1055 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1056 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1057 size_t size;
1058
1059 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1060 state.pagedims = realloc (state.pagedims, size);
1061 if (!state.pagedims) {
1062 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1063 size, state.pagedimcount + 1);
1064 }
1065
1066 p = &state.pagedims[state.pagedimcount++];
1067 p->rotate = rotate;
1068 p->mediabox = mediabox;
1069 p->pageno = pageno;
1070 }
1071 }
1072 end = now ();
1073 if (state.trimmargins) {
1074 printd ("progress 1 Trimmed %d pages in %f seconds",
1075 state.pagecount, end - start);
1076 }
1077 else {
1078 printd ("vmsg Processed %d pages in %f seconds",
1079 state.pagecount, end - start);
1080 }
1081 state.trimanew = 0;
1082 if (trimf) {
1083 if (fclose (trimf)) {
1084 err (1, "fclose");
1085 }
1086 }
1087 }
1088
1089 static void layout (void)
1090 {
1091 int pindex;
1092 fz_rect box;
1093 fz_matrix ctm;
1094 double zoom, w, maxw = 0;
1095 struct pagedim *p = state.pagedims;
1096
1097 if (state.proportional) {
1098 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1099 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1100 p->mediabox);
1101 w = box.x1 - box.x0;
1102 maxw = MAX (w, maxw);
1103 }
1104 }
1105
1106 p = state.pagedims;
1107 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1108 fz_bbox bbox;
1109
1110 ctm = fz_rotate (state.rotate);
1111 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1112 p->mediabox);
1113 w = box.x1 - box.x0;
1114
1115 if (state.proportional) {
1116 double scale = w / maxw;
1117 zoom = (state.w / w) * scale;
1118 }
1119 else {
1120 zoom = state.w / w;
1121 }
1122
1123 p->zoomctm = fz_scale (zoom, zoom);
1124 ctm = fz_concat (p->zoomctm, ctm);
1125
1126 p->pagebox = fz_transform_rect (fz_rotate (p->rotate), p->mediabox);
1127 p->pagebox.x1 -= p->pagebox.x0;
1128 p->pagebox.y1 -= p->pagebox.y0;
1129 p->pagebox.x0 = 0;
1130 p->pagebox.y0 = 0;
1131 bbox = fz_round_rect (fz_transform_rect (ctm, p->pagebox));
1132
1133 p->bounds = bbox;
1134 p->left = state.proportional ? ((maxw - w) * zoom) / 2.0 : 0;
1135 p->ctm = ctm;
1136
1137 ctm = fz_identity;
1138 ctm = fz_concat (ctm, fz_translate (0, -p->mediabox.y1));
1139 ctm = fz_concat (ctm, fz_scale (zoom, -zoom));
1140 ctm = fz_concat (ctm, fz_rotate (p->rotate + state.rotate));
1141 p->lctm = ctm;
1142
1143 p->tctmready = 0;
1144 }
1145
1146 while (p-- != state.pagedims) {
1147 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1148 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1149 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1150 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1151 int w = x1 - x0;
1152 int h = y1 - y0;
1153
1154 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1155 }
1156 }
1157
1158 static struct anchor { int n; int y; int h; } desttoanchor (fz_link_dest *dest)
1159 {
1160 int i;
1161 struct anchor a;
1162 struct pagedim *pdim = state.pagedims;
1163
1164 a.n = -1;
1165 a.y = 0;
1166 for (i = 0; i < state.pagedimcount; ++i) {
1167 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1168 break;
1169 pdim = &state.pagedims[i];
1170 }
1171 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1172 fz_point p;
1173 p.x = 0;
1174 p.y = dest->ld.gotor.lt.y;
1175 p = fz_transform_point (pdim->lctm, p);
1176 a.y = p.y;
1177 }
1178 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1179 double y0, y1;
1180
1181 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1182 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1183 a.h = y1 - y0;
1184 a.n = dest->ld.gotor.page;
1185 }
1186 return a;
1187 }
1188
1189 static void recurse_outline (fz_outline *outline, int level)
1190 {
1191 while (outline) {
1192 struct anchor a = desttoanchor (&outline->dest);
1193
1194 if (a.n >= 0) {
1195 printd ("o %d %d %d %d %s",
1196 level, a.n, a.y, a.h, outline->title);
1197 }
1198 if (outline->down) {
1199 recurse_outline (outline->down, level + 1);
1200 }
1201 outline = outline->next;
1202 }
1203 }
1204
1205 static void process_outline (void)
1206 {
1207 fz_outline *outline;
1208
1209 if (!state.needoutline) return;
1210
1211 state.needoutline = 0;
1212 switch (state.type) {
1213 case DPDF:
1214 outline = pdf_load_outline (state.u.pdf);
1215 break;
1216 case DXPS:
1217 outline = xps_load_outline (state.u.xps);
1218 break;
1219 default:
1220 outline = NULL;
1221 break;
1222 }
1223 if (outline) {
1224 recurse_outline (outline, 0);
1225 fz_free_outline (state.ctx, outline);
1226 }
1227 }
1228
1229 static char *strofspan (fz_text_span *span)
1230 {
1231 char *p;
1232 char utf8[10];
1233 fz_text_char *ch;
1234 size_t size = 0, cap = 80;
1235
1236 p = malloc (cap + 1);
1237 if (!p) return NULL;
1238
1239 for (ch = span->text; ch < span->text + span->len; ++ch) {
1240 int n = fz_runetochar (utf8, ch->c);
1241 if (size + n > cap) {
1242 cap *= 2;
1243 p = realloc (p, cap + 1);
1244 if (!p) return NULL;
1245 }
1246
1247 memcpy (p + size, utf8, n);
1248 size += n;
1249 }
1250 p[size] = 0;
1251 return p;
1252 }
1253
1254 static int matchspan (regex_t *re, fz_text_span *span, fz_matrix ctm,
1255 int stop, int pageno, double start)
1256 {
1257 int ret;
1258 char *p;
1259 regmatch_t rm;
1260 int a, b, c;
1261 fz_rect *sb, *eb;
1262 fz_point p1, p2, p3, p4;
1263
1264 p = strofspan (span);
1265 if (!p) return -1;
1266
1267 ret = regexec (re, p, 1, &rm, 0);
1268 if (ret) {
1269 free (p);
1270 if (ret != REG_NOMATCH) {
1271 size_t size;
1272 char errbuf[80];
1273 size = regerror (ret, re, errbuf, sizeof (errbuf));
1274 printd ("msg regexec error `%.*s'",
1275 (int) size, errbuf);
1276 return -1;
1277 }
1278 return 0;
1279 }
1280 else {
1281 int l = span->len;
1282 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1283 c += fz_runelen (span->text[a].c);
1284 }
1285 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1286 c += fz_runelen (span->text[b].c);
1287 }
1288
1289 if (fz_runelen (span->text[b].c) > 1) {
1290 b = MAX (0, b-1);
1291 }
1292 sb = &span->text[MIN (a, l-1)].bbox;
1293 eb = &span->text[MIN (b, l-1)].bbox;
1294
1295 p1.x = sb->x0;
1296 p1.y = sb->y0;
1297 p2.x = eb->x1;
1298 p2.y = sb->y0;
1299 p3.x = eb->x1;
1300 p3.y = eb->y1;
1301 p4.x = sb->x0;
1302 p4.y = eb->y1;
1303
1304 if (!stop) {
1305 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1306 pageno, 1,
1307 p1.x, p1.y,
1308 p2.x, p2.y,
1309 p3.x, p3.y,
1310 p4.x, p4.y);
1311
1312 printd ("progress 1 found at %d `%.*s' in %f sec",
1313 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1314 now () - start);
1315 }
1316 else {
1317 printd ("match %d %d %f %f %f %f %f %f %f %f",
1318 pageno, 2,
1319 p1.x, p1.y,
1320 p2.x, p2.y,
1321 p3.x, p3.y,
1322 p4.x, p4.y);
1323 }
1324 free (p);
1325 return 1;
1326 }
1327 }
1328
1329 static int compareblocks (const void *l, const void *r)
1330 {
1331 fz_text_block const *ls = l;
1332 fz_text_block const* rs = r;
1333 return ls->bbox.y0 - rs->bbox.y0;
1334 }
1335
1336 /* wishful thinking function */
1337 static void search (regex_t *re, int pageno, int y, int forward)
1338 {
1339 int i, j;
1340 fz_matrix ctm;
1341 fz_device *tdev;
1342 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1343 fz_text_page *text;
1344 fz_text_sheet *sheet;
1345 struct pagedim *pdim, *pdimprev;
1346 int stop = 0, niters = 0;
1347 double start, end;
1348
1349 if (!(state.type == DPDF || state.type == DXPS))
1350 return;
1351
1352 start = now ();
1353 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1354 if (niters++ == 5) {
1355 niters = 0;
1356 if (hasdata ()) {
1357 printd ("progress 1 attention requested aborting search at %d",
1358 pageno);
1359 stop = 1;
1360 }
1361 else {
1362 printd ("progress %f searching in page %d",
1363 (double) (pageno + 1) / state.pagecount,
1364 pageno);
1365 }
1366 }
1367 pdimprev = NULL;
1368 for (i = 0; i < state.pagedimcount; ++i) {
1369 pdim = &state.pagedims[i];
1370 if (pdim->pageno == pageno) {
1371 goto found;
1372 }
1373 if (pdim->pageno > pageno) {
1374 pdim = pdimprev;
1375 goto found;
1376 }
1377 pdimprev = pdim;
1378 }
1379 pdim = pdimprev;
1380 found:
1381
1382 sheet = fz_new_text_sheet (state.ctx);
1383 text = fz_new_text_page (state.ctx, fz_infinite_rect);
1384 tdev = fz_new_text_device (state.ctx, sheet, text);
1385
1386 switch (state.type) {
1387 case DPDF:
1388 u.ptr = NULL;
1389 fz_try (state.ctx) {
1390 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1391 trimctm (u.pdfpage, pdim - state.pagedims);
1392 ctm = fz_concat (pdim->tctm, pdim->zoomctm);
1393 pdf_run_page (state.u.pdf, u.pdfpage, tdev, ctm, NULL);
1394 }
1395 fz_catch (state.ctx) {
1396 fz_free_device (tdev);
1397 u.ptr = NULL;
1398 goto nextiter;
1399 }
1400 break;
1401
1402 case DXPS:
1403 u.xpspage = xps_load_page (state.u.xps, pageno);
1404 ctm = pdim->ctm;
1405 xps_run_page (state.u.xps, u.xpspage, tdev, ctm, NULL);
1406 break;
1407
1408 default:
1409 ARSERT (0 && state.type);
1410 }
1411
1412 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1413 fz_free_device (tdev);
1414
1415 for (j = 0; j < text->len; ++j) {
1416 int k;
1417 fz_text_block *block;
1418
1419 block = &text->blocks[forward ? j : text->len - 1 - j];
1420
1421 for (k = 0; k < block->len; ++k) {
1422 fz_text_line *line;
1423 fz_text_span *span;
1424
1425 if (forward) {
1426 line = &block->lines[k];
1427 if (line->bbox.y0 < y + 1) continue;
1428 }
1429 else {
1430 line = &block->lines[block->len - 1 - k];
1431 if (line->bbox.y0 > y - 1) continue;
1432 }
1433
1434 for (span = line->spans;
1435 span < line->spans + line->len;
1436 ++span) {
1437
1438 switch (matchspan (re, span, ctm, stop, pageno, start)) {
1439 case 0: break;
1440 case 1: stop = 1; break;
1441 case -1: stop = 1; goto endloop;
1442 }
1443 }
1444 }
1445 }
1446 nextiter:
1447 if (forward) {
1448 pageno += 1;
1449 y = 0;
1450 }
1451 else {
1452 pageno -= 1;
1453 y = INT_MAX;
1454 }
1455 endloop:
1456 fz_free_text_page (state.ctx, text);
1457 fz_free_text_sheet (state.ctx, sheet);
1458 if (u.ptr) {
1459 state.freepage (u.ptr);
1460 }
1461 }
1462 end = now ();
1463 if (!stop) {
1464 printd ("progress 1 no matches %f sec", end - start);
1465 }
1466 printd ("clearrects");
1467 }
1468
1469 static void set_tex_params (int colorspace)
1470 {
1471 union {
1472 unsigned char b;
1473 unsigned int s;
1474 } endianness = {1};
1475
1476 switch (colorspace) {
1477 case 0:
1478 state.texiform = GL_RGBA8;
1479 state.texform = GL_RGBA;
1480 state.texty = GL_UNSIGNED_BYTE;
1481 state.colorspace = fz_device_rgb;
1482 break;
1483 case 1:
1484 state.texiform = GL_RGBA8;
1485 state.texform = GL_BGRA;
1486 state.texty = endianness.s > 1
1487 ? GL_UNSIGNED_INT_8_8_8_8
1488 : GL_UNSIGNED_INT_8_8_8_8_REV;
1489 state.colorspace = fz_device_bgr;
1490 break;
1491 case 2:
1492 state.texiform = GL_LUMINANCE_ALPHA;
1493 state.texform = GL_LUMINANCE_ALPHA;
1494 state.texty = GL_UNSIGNED_BYTE;
1495 state.colorspace = fz_device_gray;
1496 break;
1497 default:
1498 errx (1, "invalid colorspce %d", colorspace);
1499 }
1500 }
1501
1502 static void realloctexts (int texcount)
1503 {
1504 size_t size;
1505
1506 if (texcount == state.texcount) return;
1507
1508 if (texcount < state.texcount) {
1509 glDeleteTextures (state.texcount - texcount,
1510 state.texids + texcount);
1511 }
1512
1513 size = texcount * sizeof (*state.texids);
1514 state.texids = realloc (state.texids, size);
1515 if (!state.texids) {
1516 err (1, "realloc texids %" FMT_s, size);
1517 }
1518
1519 size = texcount * sizeof (*state.texowners);
1520 state.texowners = realloc (state.texowners, size);
1521 if (!state.texowners) {
1522 err (1, "realloc texowners %" FMT_s, size);
1523 }
1524 if (texcount > state.texcount) {
1525 int i;
1526
1527 glGenTextures (texcount - state.texcount,
1528 state.texids + state.texcount);
1529 for (i = state.texcount; i < texcount; ++i) {
1530 state.texowners[i].w = -1;
1531 state.texowners[i].slice = NULL;
1532 }
1533 }
1534 state.texcount = texcount;
1535 state.texindex = 0;
1536 }
1537
1538 static char *mbtoutf8 (char *s)
1539 {
1540 char *p, *r;
1541 wchar_t *tmp;
1542 size_t i, ret, len;
1543
1544 len = mbstowcs (NULL, s, strlen (s));
1545 if (len == 0) {
1546 return s;
1547 }
1548 else {
1549 if (len == (size_t) -1) {
1550 return s;
1551 }
1552 }
1553
1554 tmp = malloc (len * sizeof (wchar_t));
1555 if (!tmp) {
1556 return s;
1557 }
1558
1559 ret = mbstowcs (tmp, s, len);
1560 if (ret == (size_t) -1) {
1561 free (tmp);
1562 return s;
1563 }
1564
1565 len = 0;
1566 for (i = 0; i < ret; ++i) {
1567 len += fz_runelen (tmp[i]);
1568 }
1569
1570 p = r = malloc (len + 1);
1571 if (!r) {
1572 free (tmp);
1573 return s;
1574 }
1575
1576 for (i = 0; i < ret; ++i) {
1577 p += fz_runetochar (p, tmp[i]);
1578 }
1579 *p = 0;
1580 free (tmp);
1581 return r;
1582 }
1583
1584 CAMLprim value ml_mbtoutf8 (value s_v)
1585 {
1586 CAMLparam1 (s_v);
1587 CAMLlocal1 (ret_v);
1588 char *s, *r;
1589
1590 s = String_val (s_v);
1591 r = mbtoutf8 (s);
1592 if (r == s) {
1593 ret_v = s_v;
1594 }
1595 else {
1596 ret_v = caml_copy_string (r);
1597 free (r);
1598 }
1599 CAMLreturn (ret_v);
1600 }
1601
1602 static void * mainloop (void *unused)
1603 {
1604 char *p = NULL;
1605 int len, ret, oldlen = 0;
1606
1607 for (;;) {
1608 len = readlen ();
1609 if (len == 0) {
1610 errx (1, "readlen returned 0");
1611 }
1612
1613 if (oldlen < len + 1) {
1614 p = realloc (p, len + 1);
1615 if (!p) {
1616 err (1, "realloc %d failed", len + 1);
1617 }
1618 oldlen = len + 1;
1619 }
1620 readdata (p, len);
1621 p[len] = 0;
1622
1623 if (!strncmp ("open", p, 4)) {
1624 size_t filenamelen;
1625 int wthack, off;
1626 char *password;
1627 char *filename;
1628 char *utf8filename;
1629
1630 ret = sscanf (p + 5, " %d %n", &wthack, &off);
1631 if (ret != 1) {
1632 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1633 }
1634
1635 filename = p + 5 + off;
1636 filenamelen = strlen (filename);
1637 password = filename + filenamelen + 1;
1638
1639 lock ("open");
1640 openxref (filename, password);
1641 pdfinfo ();
1642 initpdims ();
1643 unlock ("open");
1644
1645 if (!wthack) {
1646 utf8filename = mbtoutf8 (filename);
1647 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1648 if (utf8filename != filename) {
1649 free (utf8filename);
1650 }
1651 }
1652 state.needoutline = 1;
1653 }
1654 else if (!strncmp ("cs", p, 2)) {
1655 int i, colorspace;
1656
1657 ret = sscanf (p + 2, " %d", &colorspace);
1658 if (ret != 1) {
1659 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1660 }
1661 lock ("cs");
1662 set_tex_params (colorspace);
1663 for (i = 0; i < state.texcount; ++i) {
1664 state.texowners[i].w = -1;
1665 state.texowners[i].slice = NULL;
1666 }
1667 unlock ("cs");
1668 }
1669 else if (!strncmp ("freepage", p, 8)) {
1670 void *ptr;
1671
1672 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1673 if (ret != 1) {
1674 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1675 }
1676 freepage (ptr);
1677 }
1678 else if (!strncmp ("freetile", p, 8)) {
1679 void *ptr;
1680
1681 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1682 if (ret != 1) {
1683 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1684 }
1685 freetile (ptr);
1686 }
1687 else if (!strncmp ("search", p, 6)) {
1688 int icase, pageno, y, ret, len2, forward;
1689 char *pattern;
1690 regex_t re;
1691
1692 ret = sscanf (p + 6, " %d %d %d %d,%n",
1693 &icase, &pageno, &y, &forward, &len2);
1694 if (ret != 4) {
1695 errx (1, "malformed search `%s' ret=%d", p, ret);
1696 }
1697
1698 pattern = p + 6 + len2;
1699 ret = regcomp (&re, pattern,
1700 REG_EXTENDED | (icase ? REG_ICASE : 0));
1701 if (ret) {
1702 char errbuf[80];
1703 size_t size;
1704
1705 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1706 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1707 }
1708 else {
1709 search (&re, pageno, y, forward);
1710 regfree (&re);
1711 }
1712 }
1713 else if (!strncmp ("geometry", p, 8)) {
1714 int w, h;
1715
1716 printd ("clear");
1717 ret = sscanf (p + 8, " %d %d", &w, &h);
1718 if (ret != 2) {
1719 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1720 }
1721
1722 lock ("geometry");
1723 state.h = h;
1724 if (w != state.w) {
1725 int i;
1726 state.w = w;
1727 for (i = 0; i < state.texcount; ++i) {
1728 state.texowners[i].slice = NULL;
1729 }
1730 }
1731 layout ();
1732 process_outline ();
1733
1734 state.gen++;
1735 unlock ("geometry");
1736 printd ("continue %d", state.pagecount);
1737 }
1738 else if (!strncmp ("reqlayout", p, 9)) {
1739 char *nameddest;
1740 int rotate, proportional, off;
1741
1742 printd ("clear");
1743 ret = sscanf (p + 9, " %d %d %n", &rotate, &proportional, &off);
1744 if (ret != 2) {
1745 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1746 }
1747 lock ("reqlayout");
1748 if (state.rotate != rotate || state.proportional != proportional) {
1749 state.gen += 1;
1750 }
1751 state.rotate = rotate;
1752 state.proportional = proportional;
1753 layout ();
1754 process_outline ();
1755
1756 nameddest = p + 9 + off;
1757 if (state.type == DPDF && nameddest && *nameddest) {
1758 struct anchor a;
1759 fz_link_dest dest;
1760 pdf_obj *needle, *obj;
1761
1762 needle = pdf_new_string (state.ctx, nameddest,
1763 strlen (nameddest));
1764 obj = pdf_lookup_dest (state.u.pdf, needle);
1765 if (obj) {
1766 dest = pdf_parse_link_dest (state.u.pdf, obj);
1767
1768 a = desttoanchor (&dest);
1769 if (a.n >= 0) {
1770 printd ("a %d %d %d", a.n, a.y, a.h);
1771 }
1772 else {
1773 printd ("emsg failed to parse destination `%s'\n",
1774 nameddest);
1775 }
1776 }
1777 else {
1778 printd ("emsg destination `%s' not found\n",
1779 nameddest);
1780 }
1781 pdf_drop_obj (needle);
1782 }
1783
1784 state.gen++;
1785 unlock ("reqlayout");
1786 printd ("continue %d", state.pagecount);
1787 }
1788 else if (!strncmp ("page", p, 4)) {
1789 double a, b;
1790 struct page *page;
1791 int pageno, pindex, ret;
1792
1793 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1794 if (ret != 2) {
1795 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1796 }
1797
1798 lock ("page");
1799 a = now ();
1800 page = loadpage (pageno, pindex);
1801 b = now ();
1802 unlock ("page");
1803
1804 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1805 }
1806 else if (!strncmp ("tile", p, 4)) {
1807 int x, y, w, h, ret;
1808 struct page *page;
1809 struct tile *tile;
1810 double a, b;
1811 void *data;
1812
1813 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1814 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1815 if (ret != 6) {
1816 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1817 }
1818
1819 lock ("tile");
1820 a = now ();
1821 tile = rendertile (page, x, y, w, h, data);
1822 b = now ();
1823 unlock ("tile");
1824
1825 printd ("tile %d %d %" FMT_ptr " %u %f",
1826 x, y,
1827 FMT_ptr_cast2 (tile),
1828 tile->w * tile->h * tile->pixmap->n,
1829 b - a);
1830 }
1831 else if (!strncmp ("settrim", p, 7)) {
1832 int trimmargins;
1833 fz_bbox fuzz;
1834
1835 ret = sscanf (p + 7, " %d %d %d %d %d", &trimmargins,
1836 &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1837 if (ret != 5) {
1838 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1839 }
1840 printd ("clear");
1841 lock ("settrim");
1842 state.trimmargins = trimmargins;
1843 state.needoutline = 1;
1844 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1845 state.trimanew = 1;
1846 state.trimfuzz = fuzz;
1847 }
1848 state.pagedimcount = 0;
1849 free (state.pagedims);
1850 state.pagedims = NULL;
1851 initpdims ();
1852 layout ();
1853 process_outline ();
1854 unlock ("settrim");
1855 printd ("continue %d", state.pagecount);
1856 }
1857 else if (!strncmp ("sliceh", p, 6)) {
1858 int h;
1859
1860 ret = sscanf (p + 6, " %d", &h);
1861 if (ret != 1) {
1862 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1863 }
1864 if (h != state.sliceheight) {
1865 int i;
1866
1867 state.sliceheight = h;
1868 for (i = 0; i < state.texcount; ++i) {
1869 state.texowners[i].w = -1;
1870 state.texowners[i].h = -1;
1871 state.texowners[i].slice = NULL;
1872 }
1873 }
1874 }
1875 else if (!strncmp ("interrupt", p, 9)) {
1876 printd ("vmsg interrupted");
1877 }
1878 else {
1879 errx (1, "unknown command %.*s", len, p);
1880 }
1881 }
1882 return 0;
1883 }
1884
1885 CAMLprim value ml_realloctexts (value texcount_v)
1886 {
1887 CAMLparam1 (texcount_v);
1888 int ok;
1889
1890 if (trylock ("ml_realloctexts")) {
1891 ok = 0;
1892 goto done;
1893 }
1894 realloctexts (Int_val (texcount_v));
1895 ok = 1;
1896 unlock ("ml_realloctexts");
1897
1898 done:
1899 CAMLreturn (Val_bool (ok));
1900 }
1901
1902 static void showsel (struct page *page, int ox, int oy)
1903 {
1904 int seen = 0;
1905 fz_bbox bbox;
1906 fz_rect rect;
1907 fz_text_line *line;
1908 fz_text_span *span;
1909 fz_text_block *block;
1910 struct mark first, last;
1911
1912 first = page->fmark;
1913 last = page->lmark;
1914
1915 if (!first.span || !last.span) return;
1916
1917 glEnable (GL_BLEND);
1918 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
1919 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
1920
1921 ox += state.pagedims[page->pdimno].bounds.x0;
1922 oy += state.pagedims[page->pdimno].bounds.y0;
1923 for (block = page->text->blocks;
1924 block < page->text->blocks + page->text->len;
1925 ++block) {
1926 for (line = block->lines;
1927 line < block->lines + block->len;
1928 ++line) {
1929 rect = fz_empty_rect;
1930 for (span = line->spans;
1931 span < line->spans + line->len;
1932 ++span) {
1933 int i, j, k;
1934
1935 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
1936
1937 j = 0;
1938 k = span->len - 1;
1939
1940 if (span == page->fmark.span && span == page->lmark.span) {
1941 seen = 1;
1942 j = MIN (first.i, last.i);
1943 k = MAX (first.i, last.i);
1944 }
1945 else if (span == first.span) {
1946 seen = 1;
1947 j = first.i;
1948 }
1949 else if (span == last.span) {
1950 seen = 1;
1951 k = last.i;
1952 }
1953
1954 if (seen) {
1955 for (i = j; i <= k; ++i) {
1956 rect = fz_union_rect (rect, span->text[i].bbox);
1957 }
1958 bbox = fz_round_rect (rect);
1959 lprintf ("%d %d %d %d oy=%d ox=%d\n",
1960 bbox.x0,
1961 bbox.y0,
1962 bbox.x1,
1963 bbox.y1,
1964 oy, ox);
1965
1966 glRecti (bbox.x0 + ox, bbox.y0 + oy,
1967 bbox.x1 + ox, bbox.y1 + oy);
1968 if (span == last.span) {
1969 goto done;
1970 }
1971 }
1972 }
1973 }
1974 }
1975 done:
1976 glDisable (GL_BLEND);
1977 }
1978
1979 #include "glfont.c"
1980
1981 static void highlightlinks (struct page *page, int xoff, int yoff)
1982 {
1983 fz_matrix ctm;
1984 fz_link *link, *links;
1985
1986 switch (page->type) {
1987 case DPDF:
1988 links = page->u.pdfpage->links;
1989 break;
1990
1991 case DXPS:
1992 links = page->u.xpspage->links;
1993 break;
1994
1995 default:
1996 return;
1997 }
1998
1999 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2000 glEnable (GL_LINE_STIPPLE);
2001 glLineStipple (0.5, 0xcccc);
2002
2003 xoff -= state.pagedims[page->pdimno].bounds.x0;
2004 yoff -= state.pagedims[page->pdimno].bounds.y0;
2005 ctm = fz_concat (pagectm (page), fz_translate (xoff, yoff));
2006
2007 glBegin (GL_QUADS);
2008 for (link = links; link; link = link->next) {
2009 fz_point p1, p2, p3, p4;
2010
2011 p1.x = link->rect.x0;
2012 p1.y = link->rect.y0;
2013
2014 p2.x = link->rect.x1;
2015 p2.y = link->rect.y0;
2016
2017 p3.x = link->rect.x1;
2018 p3.y = link->rect.y1;
2019
2020 p4.x = link->rect.x0;
2021 p4.y = link->rect.y1;
2022
2023 p1 = fz_transform_point (ctm, p1);
2024 p2 = fz_transform_point (ctm, p2);
2025 p3 = fz_transform_point (ctm, p3);
2026 p4 = fz_transform_point (ctm, p4);
2027
2028 switch (link->dest.kind) {
2029 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2030 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2031 default: glColor3ub (0, 0, 0); break;
2032 }
2033
2034 glVertex2f (p1.x, p1.y);
2035 glVertex2f (p2.x, p2.y);
2036 glVertex2f (p3.x, p3.y);
2037 glVertex2f (p4.x, p4.y);
2038 }
2039 glEnd ();
2040
2041 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2042 glDisable (GL_LINE_STIPPLE);
2043 }
2044
2045 static int compareslinks (const void *l, const void *r)
2046 {
2047 struct slink const *ls = l;
2048 struct slink const *rs = r;
2049 if (ls->bbox.y0 == rs->bbox.y0) {
2050 return rs->bbox.x0 - rs->bbox.x0;
2051 }
2052 return ls->bbox.y0 - rs->bbox.y0;
2053 }
2054
2055 static void droptext (struct page *page)
2056 {
2057 if (page->text) {
2058 fz_free_text_page (state.ctx, page->text);
2059 page->fmark.i = -1;
2060 page->lmark.i = -1;
2061 page->fmark.span = NULL;
2062 page->lmark.span = NULL;
2063 page->text = NULL;
2064 }
2065 if (page->sheet) {
2066 fz_free_text_sheet (state.ctx, page->sheet);
2067 }
2068 }
2069
2070 static void dropslinks (struct page *page)
2071 {
2072 if (page->slinks) {
2073 free (page->slinks);
2074 page->slinks = NULL;
2075 page->slinkcount = 0;
2076 }
2077 }
2078
2079 static void ensureslinks (struct page *page)
2080 {
2081 fz_matrix ctm;
2082 int i, count = 0;
2083 size_t slinksize = sizeof (*page->slinks);
2084 fz_link *link, *links;
2085
2086 if (state.gen != page->sgen) {
2087 dropslinks (page);
2088 page->sgen = state.gen;
2089 }
2090 if (page->slinks) return;
2091
2092 switch (page->type) {
2093 case DPDF:
2094 links = page->u.pdfpage->links;
2095 ctm = fz_concat (trimctm (page->u.pdfpage, page->pdimno),
2096 state.pagedims[page->pdimno].ctm);
2097 break;
2098
2099 case DXPS:
2100 links = page->u.xpspage->links;
2101 ctm = state.pagedims[page->pdimno].ctm;
2102 break;
2103
2104 default:
2105 return;
2106 }
2107
2108 for (link = links; link; link = link->next) {
2109 count++;
2110 }
2111 if (count > 0) {
2112 page->slinkcount = count;
2113 page->slinks = calloc (count, slinksize);
2114 if (!page->slinks) {
2115 err (1, "realloc slinks %d", count);
2116 }
2117
2118 for (i = 0, link = links; link; ++i, link = link->next) {
2119 page->slinks[i].link = link;
2120 page->slinks[i].bbox =
2121 fz_round_rect (fz_transform_rect (ctm, link->rect));
2122 }
2123 qsort (page->slinks, count, slinksize, compareslinks);
2124 }
2125 }
2126
2127 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2128 static void fmt_linkn (char *s, unsigned int u)
2129 {
2130 unsigned int len; unsigned int q;
2131 int zma = 'z' - 'a' + 1;
2132 len = 1; q = u;
2133 while (q > zma - 1) { ++len; q /= zma; }
2134 if (s) {
2135 s += len;
2136 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2137 /* handles u == 0 */
2138 }
2139 s[len] = 0;
2140 }
2141
2142 static void highlightslinks (struct page *page, int xoff, int yoff,
2143 int noff, char *targ, int tlen, int hfsize)
2144 {
2145 int i;
2146 char buf[40];
2147 struct slink *slink;
2148 double x0, y0, x1, y1, w;
2149
2150 ensureslinks (page);
2151 glColor3ub (0xc3, 0xb0, 0x91);
2152 for (i = 0; i < page->slinkcount; ++i) {
2153 fmt_linkn (buf, i + noff);
2154 if (!tlen || !strncmp (targ, buf, tlen)) {
2155 slink = &page->slinks[i];
2156
2157 x0 = slink->bbox.x0 + xoff - 5;
2158 y1 = slink->bbox.y0 + yoff - 5;
2159 y0 = y1 + 10 + hfsize;
2160 w = measure_string (state.face, hfsize, buf);
2161 x1 = x0 + w + 10;
2162 glRectd (x0, y0, x1, y1);
2163 }
2164 }
2165
2166 glEnable (GL_BLEND);
2167 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2168 glEnable (GL_TEXTURE_2D);
2169 glColor3ub (0, 0, 0);
2170 for (i = 0; i < page->slinkcount; ++i) {
2171 fmt_linkn (buf, i + noff);
2172 if (!tlen || !strncmp (targ, buf, tlen)) {
2173 slink = &page->slinks[i];
2174
2175 x0 = slink->bbox.x0 + xoff;
2176 y0 = slink->bbox.y0 + yoff + hfsize;
2177 draw_string (state.face, hfsize, x0, y0, buf);
2178 }
2179 }
2180 glDisable (GL_TEXTURE_2D);
2181 glDisable (GL_BLEND);
2182 }
2183
2184
2185 static void uploadslice (struct tile *tile, struct slice *slice)
2186 {
2187 int offset;
2188 struct slice *slice1;
2189 unsigned char *texdata;
2190
2191 offset = 0;
2192 for (slice1 = tile->slices; slice != slice1; slice1++) {
2193 offset += slice1->h * tile->w * tile->pixmap->n;
2194 }
2195 if (slice->texindex != -1 && slice->texindex < state.texcount
2196 && state.texowners[slice->texindex].slice == slice) {
2197 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2198 }
2199 else {
2200 int subimage = 0;
2201 int texindex = state.texindex++ % state.texcount;
2202
2203 if (state.texowners[texindex].w == tile->w) {
2204 if (state.texowners[texindex].h >= slice->h) {
2205 subimage = 1;
2206 }
2207 else {
2208 state.texowners[texindex].h = slice->h;
2209 }
2210 }
2211 else {
2212 state.texowners[texindex].h = slice->h;
2213 }
2214
2215 state.texowners[texindex].w = tile->w;
2216 state.texowners[texindex].slice = slice;
2217 slice->texindex = texindex;
2218
2219 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2220 if (tile->pbo) {
2221 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2222 texdata = 0;
2223 }
2224 else {
2225 texdata = tile->pixmap->samples;
2226 }
2227 if (subimage) {
2228 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2229 0,
2230 0,
2231 0,
2232 tile->w,
2233 slice->h,
2234 state.texform,
2235 state.texty,
2236 texdata+offset
2237 );
2238 }
2239 else {
2240 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2241 0,
2242 state.texiform,
2243 tile->w,
2244 slice->h,
2245 0,
2246 state.texform,
2247 state.texty,
2248 texdata+offset
2249 );
2250 }
2251 if (tile->pbo) {
2252 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2253 }
2254 }
2255 }
2256
2257 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2258 {
2259 CAMLparam2 (args_v, ptr_v);
2260 int dispx = Int_val (Field (args_v, 0));
2261 int dispy = Int_val (Field (args_v, 1));
2262 int dispw = Int_val (Field (args_v, 2));
2263 int disph = Int_val (Field (args_v, 3));
2264 int tilex = Int_val (Field (args_v, 4));
2265 int tiley = Int_val (Field (args_v, 5));
2266 char *s = String_val (ptr_v);
2267 struct tile *tile = parse_pointer ("ml_drawtile", s);
2268
2269 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2270 {
2271 int slicey, firstslice;
2272 struct slice *slice;
2273
2274 firstslice = tiley / tile->sliceheight;
2275 slice = &tile->slices[firstslice];
2276 slicey = tiley % tile->sliceheight;
2277
2278 while (disph > 0) {
2279 int dh;
2280
2281 dh = slice->h - slicey;
2282 dh = MIN (disph, dh);
2283 uploadslice (tile, slice);
2284
2285 glBegin (GL_QUADS);
2286 {
2287 glTexCoord2i (tilex, slicey);
2288 glVertex2i (dispx, dispy);
2289
2290 glTexCoord2i (tilex+dispw, slicey);
2291 glVertex2i (dispx+dispw, dispy);
2292
2293 glTexCoord2i (tilex+dispw, slicey+dh);
2294 glVertex2i (dispx+dispw, dispy+dh);
2295
2296 glTexCoord2i (tilex, slicey+dh);
2297 glVertex2i (dispx, dispy+dh);
2298 }
2299 glEnd ();
2300
2301 dispy += dh;
2302 disph -= dh;
2303 slice++;
2304 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2305 slicey = 0;
2306 }
2307 }
2308 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2309 CAMLreturn (Val_unit);
2310 }
2311
2312 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2313 value xoff_v, value yoff_v,
2314 value li_v)
2315 {
2316 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2317 int xoff = Int_val (xoff_v);
2318 int yoff = Int_val (yoff_v);
2319 int noff = Int_val (Field (li_v, 0));
2320 char *targ = String_val (Field (li_v, 1));
2321 int tlen = caml_string_length (Field (li_v, 1));
2322 int hfsize = Int_val (Field (li_v, 2));
2323 char *s = String_val (ptr_v);
2324 int hlmask = Int_val (hlinks_v);
2325 struct page *page = parse_pointer ("ml_postprocess", s);
2326
2327 if (!page->u.ptr) {
2328 /* deal with loadpage failed pages */
2329 goto done;
2330 }
2331
2332 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2333 if (trylock ("ml_postprocess")) {
2334 noff = 0;
2335 goto done;
2336 }
2337 if (hlmask & 2) {
2338 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2339 noff = page->slinkcount;
2340 }
2341 showsel (page, xoff, yoff);
2342 unlock ("ml_postprocess");
2343
2344 done:
2345 CAMLreturn (Val_int (noff));
2346 }
2347
2348 static fz_link *getlink (struct page *page, int x, int y)
2349 {
2350 fz_point p;
2351 fz_matrix ctm;
2352 fz_link *link, *links;
2353
2354 switch (page->type) {
2355 case DPDF:
2356 ctm = trimctm (page->u.pdfpage, page->pdimno);
2357 links = page->u.pdfpage->links;
2358 break;
2359
2360 case DXPS:
2361 ctm = fz_identity;
2362 links = page->u.xpspage->links;
2363 break;
2364
2365 default:
2366 return NULL;
2367 }
2368 p.x = x;
2369 p.y = y;
2370
2371 ctm = fz_concat (ctm, state.pagedims[page->pdimno].ctm);
2372 ctm = fz_invert_matrix (ctm);
2373 p = fz_transform_point (ctm, p);
2374
2375 for (link = links; link; link = link->next) {
2376 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2377 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2378 return link;
2379 }
2380 }
2381 }
2382 return NULL;
2383 }
2384
2385 static void ensuretext (struct page *page)
2386 {
2387 if (state.gen != page->tgen) {
2388 droptext (page);
2389 page->tgen = state.gen;
2390 }
2391 if (!page->text) {
2392 fz_device *tdev;
2393
2394 page->text = fz_new_text_page (state.ctx, fz_infinite_rect);
2395 page->sheet = fz_new_text_sheet (state.ctx);
2396 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2397 fz_run_display_list (page->dlist,
2398 tdev,
2399 pagectm (page),
2400 fz_infinite_rect, NULL);
2401 qsort (page->text->blocks, page->text->len,
2402 sizeof (*page->text->blocks), compareblocks);
2403 fz_free_device (tdev);
2404 }
2405 }
2406
2407 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2408 {
2409 CAMLparam2 (start_page_v, dir_v);
2410 CAMLlocal1 (ret_v);
2411 int i, dir = Int_val (dir_v);
2412 int start_page = Int_val (start_page_v);
2413 int end_page = dir > 0 ? state.pagecount : -1;
2414
2415 ret_v = Val_int (0);
2416 if (!(state.type == DPDF || state.type == DXPS)) {
2417 goto done;
2418 }
2419
2420 lock ("ml_findpage_with_links");
2421 for (i = start_page + dir; i != end_page; i += dir) {
2422 int found;
2423
2424 switch (state.type) {
2425 case DPDF:
2426 {
2427 pdf_page *page = NULL;
2428
2429 fz_try (state.ctx) {
2430 page = pdf_load_page (state.u.pdf, i);
2431 found = !!page->links;
2432 }
2433 fz_catch (state.ctx) {
2434 found = 0;
2435 }
2436 if (page) {
2437 freepdfpage (page);
2438 }
2439 }
2440 break;
2441 case DXPS:
2442 {
2443 xps_page *page = xps_load_page (state.u.xps, i);
2444 found = !!page->links;
2445 freexpspage (page);
2446 }
2447 break;
2448
2449 default:
2450 ARSERT ("invalid document type");
2451 }
2452
2453 if (found) {
2454 ret_v = caml_alloc_small (1, 1);
2455 Field (ret_v, 0) = Val_int (i);
2456 goto unlock;
2457 }
2458 }
2459 unlock:
2460 unlock ("ml_findpage_with_links");
2461
2462 done:
2463 CAMLreturn (ret_v);
2464 }
2465
2466 enum { dir_first, dir_last};
2467 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2468
2469 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2470 {
2471 CAMLparam2 (ptr_v, dir_v);
2472 CAMLlocal2 (ret_v, pos_v);
2473 struct page *page;
2474 int dirtag, i, slinkindex;
2475 struct slink *found = NULL ,*slink;
2476 char *s = String_val (ptr_v);
2477
2478 page = parse_pointer ("ml_findlink", s);
2479 ret_v = Val_int (0);
2480 if (trylock ("ml_findlink")) {
2481 goto done;
2482 }
2483
2484 ensureslinks (page);
2485
2486 if (Is_block (dir_v)) {
2487 dirtag = Tag_val (dir_v);
2488 switch (dirtag) {
2489 case dir_first_visible:
2490 {
2491 int x0, y0, dir, first_index, last_index;
2492
2493 pos_v = Field (dir_v, 0);
2494 x0 = Int_val (Field (pos_v, 0));
2495 y0 = Int_val (Field (pos_v, 1));
2496 dir = Int_val (Field (pos_v, 2));
2497
2498 if (dir >= 0) {
2499 dir = 1;
2500 first_index = 0;
2501 last_index = page->slinkcount;
2502 }
2503 else {
2504 first_index = page->slinkcount - 1;
2505 last_index = -1;
2506 }
2507
2508 for (i = first_index; i != last_index; i += dir) {
2509 slink = &page->slinks[i];
2510 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2511 found = slink;
2512 break;
2513 }
2514 }
2515 }
2516 break;
2517
2518 case dir_left:
2519 slinkindex = Int_val (Field (dir_v, 0));
2520 found = &page->slinks[slinkindex];
2521 for (i = slinkindex - 1; i >= 0; --i) {
2522 slink = &page->slinks[i];
2523 if (slink->bbox.x0 < found->bbox.x0) {
2524 found = slink;
2525 break;
2526 }
2527 }
2528 break;
2529
2530 case dir_right:
2531 slinkindex = Int_val (Field (dir_v, 0));
2532 found = &page->slinks[slinkindex];
2533 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2534 slink = &page->slinks[i];
2535 if (slink->bbox.x0 > found->bbox.x0) {
2536 found = slink;
2537 break;
2538 }
2539 }
2540 break;
2541
2542 case dir_down:
2543 slinkindex = Int_val (Field (dir_v, 0));
2544 found = &page->slinks[slinkindex];
2545 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2546 slink = &page->slinks[i];
2547 if (slink->bbox.y0 >= found->bbox.y0) {
2548 found = slink;
2549 break;
2550 }
2551 }
2552 break;
2553
2554 case dir_up:
2555 slinkindex = Int_val (Field (dir_v, 0));
2556 found = &page->slinks[slinkindex];
2557 for (i = slinkindex - 1; i >= 0; --i) {
2558 slink = &page->slinks[i];
2559 if (slink->bbox.y0 <= found->bbox.y0) {
2560 found = slink;
2561 break;
2562 }
2563 }
2564 break;
2565 }
2566 }
2567 else {
2568 dirtag = Int_val (dir_v);
2569 switch (dirtag) {
2570 case dir_first:
2571 found = page->slinks;
2572 break;
2573
2574 case dir_last:
2575 if (page->slinks) {
2576 found = page->slinks + (page->slinkcount - 1);
2577 }
2578 break;
2579 }
2580 }
2581 if (found) {
2582 ret_v = caml_alloc_small (2, 1);
2583 Field (ret_v, 0) = Val_int (found - page->slinks);
2584 }
2585
2586 unlock ("ml_findlink");
2587 done:
2588 CAMLreturn (ret_v);
2589 }
2590
2591 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2592
2593 #define LINKTOVAL \
2594 { \
2595 int pageno; \
2596 \
2597 switch (link->dest.kind) { \
2598 case FZ_LINK_GOTO: \
2599 { \
2600 fz_point p; \
2601 \
2602 pageno = link->dest.ld.gotor.page; \
2603 p.x = 0; \
2604 p.y = 0; \
2605 \
2606 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2607 p.y = link->dest.ld.gotor.lt.y; \
2608 p = fz_transform_point (pdim->lctm, p); \
2609 } \
2610 tup_v = caml_alloc_tuple (2); \
2611 ret_v = caml_alloc_small (1, ugoto); \
2612 Field (tup_v, 0) = Val_int (pageno); \
2613 Field (tup_v, 1) = Val_int (p.y); \
2614 Field (ret_v, 0) = tup_v; \
2615 } \
2616 break; \
2617 \
2618 case FZ_LINK_URI: \
2619 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2620 ret_v = caml_alloc_small (1, uuri); \
2621 Field (ret_v, 0) = str_v; \
2622 break; \
2623 \
2624 case FZ_LINK_LAUNCH: \
2625 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2626 ret_v = caml_alloc_small (1, ulaunch); \
2627 Field (ret_v, 0) = str_v; \
2628 break; \
2629 \
2630 case FZ_LINK_NAMED: \
2631 str_v = caml_copy_string (link->dest.ld.named.named); \
2632 ret_v = caml_alloc_small (1, unamed); \
2633 Field (ret_v, 0) = str_v; \
2634 break; \
2635 \
2636 case FZ_LINK_GOTOR: \
2637 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2638 pageno = link->dest.ld.gotor.page; \
2639 tup_v = caml_alloc_tuple (2); \
2640 ret_v = caml_alloc_small (1, uremote); \
2641 Field (tup_v, 0) = str_v; \
2642 Field (tup_v, 1) = Val_int (pageno); \
2643 Field (ret_v, 0) = tup_v; \
2644 break; \
2645 \
2646 default: \
2647 { \
2648 char buf[80]; \
2649 \
2650 snprintf (buf, sizeof (buf), \
2651 "unhandled link kind %d", link->dest.kind); \
2652 str_v = caml_copy_string (buf); \
2653 ret_v = caml_alloc_small (1, uunexpected); \
2654 Field (ret_v, 0) = str_v; \
2655 } \
2656 break; \
2657 } \
2658 }
2659
2660 CAMLprim value ml_getlink (value ptr_v, value n_v)
2661 {
2662 CAMLparam2 (ptr_v, n_v);
2663 CAMLlocal3 (ret_v, tup_v, str_v);
2664 fz_link *link;
2665 struct page *page;
2666 struct pagedim *pdim;
2667 char *s = String_val (ptr_v);
2668
2669 ret_v = Val_int (0);
2670 if (trylock ("ml_getlink")) {
2671 goto done;
2672 }
2673
2674 page = parse_pointer ("ml_getlink", s);
2675 ensureslinks (page);
2676 pdim = &state.pagedims[page->pdimno];
2677 link = page->slinks[Int_val (n_v)].link;
2678 LINKTOVAL;
2679
2680 unlock ("ml_getlink");
2681 done:
2682 CAMLreturn (ret_v);
2683 }
2684
2685 CAMLprim value ml_getlinkcount (value ptr_v)
2686 {
2687 CAMLparam1 (ptr_v);
2688 struct page *page;
2689 char *s = String_val (ptr_v);
2690
2691 page = parse_pointer ("ml_getlinkcount", s);
2692 CAMLreturn (Val_int (page->slinkcount));
2693 }
2694
2695 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2696 {
2697 CAMLparam2 (ptr_v, n_v);
2698 CAMLlocal1 (ret_v);
2699 struct page *page;
2700 struct slink *slink;
2701 char *s = String_val (ptr_v);
2702
2703 page = parse_pointer ("ml_getlinkrect", s);
2704 ret_v = caml_alloc_tuple (4);
2705 if (trylock ("ml_getlinkrect")) {
2706 Field (ret_v, 0) = Val_int (0);
2707 Field (ret_v, 1) = Val_int (0);
2708 Field (ret_v, 2) = Val_int (0);
2709 Field (ret_v, 3) = Val_int (0);
2710 goto done;
2711 }
2712 ensureslinks (page);
2713
2714 slink = &page->slinks[Int_val (n_v)];
2715 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2716 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2717 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2718 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2719 unlock ("ml_getlinkrect");
2720
2721 done:
2722 CAMLreturn (ret_v);
2723 }
2724
2725 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2726 {
2727 CAMLparam3 (ptr_v, x_v, y_v);
2728 CAMLlocal3 (ret_v, tup_v, str_v);
2729 fz_link *link;
2730 struct page *page;
2731 char *s = String_val (ptr_v);
2732 int x = Int_val (x_v), y = Int_val (y_v);
2733 struct pagedim *pdim;
2734
2735 ret_v = Val_int (0);
2736 if (trylock ("ml_whatsunder")) {
2737 goto done;
2738 }
2739
2740 page = parse_pointer ("ml_whatsunder", s);
2741 pdim = &state.pagedims[page->pdimno];
2742 x += pdim->bounds.x0;
2743 y += pdim->bounds.y0;
2744 link = getlink (page, x, y);
2745 if (link) {
2746 LINKTOVAL;
2747 }
2748 else {
2749 fz_rect *b;
2750 fz_text_block *block;
2751
2752 ensuretext (page);
2753 for (block = page->text->blocks;
2754 block < page->text->blocks + page->text->len;
2755 ++block) {
2756 fz_text_line *line;
2757
2758 b = &block->bbox;
2759 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2760 continue;
2761
2762 for (line = block->lines;
2763 line < block->lines + block->len;
2764 ++line) {
2765 fz_text_span *span;
2766
2767 b = &line->bbox;
2768 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2769 continue;
2770
2771 for (span = line->spans;
2772 span < line->spans + line->len;
2773 ++span) {
2774 fz_text_char *ch;
2775
2776 b = &span->bbox;
2777 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2778 continue;
2779
2780 for (ch = span->text; ch < span->text + span->len; ++ch) {
2781 b = &ch->bbox;
2782
2783 if (x >= b->x0 && x <= b->x1
2784 && y >= b->y0 && y <= b->y1) {
2785 const char *n2 =
2786 span->style->font && span->style->font->name
2787 ? span->style->font->name
2788 : "Span has no font name"
2789 ;
2790 FT_FaceRec *face = span->style->font->ft_face;
2791 if (face && face->family_name) {
2792 char *s;
2793 char *n1 = face->family_name;
2794 size_t l1 = strlen (n1);
2795 size_t l2 = strlen (n2);
2796
2797 if (l1 != l2 || memcmp (n1, n2, l1)) {
2798 s = malloc (l1 + l2 + 2);
2799 if (s) {
2800 memcpy (s, n2, l2);
2801 s[l2] = '=';
2802 memcpy (s + l2 + 1, n1, l1 + 1);
2803 str_v = caml_copy_string (s);
2804 free (s);
2805 }
2806 }
2807 }
2808 if (str_v == 0) {
2809 str_v = caml_copy_string (n2);
2810 }
2811 ret_v = caml_alloc_small (1, utext);
2812 Field (ret_v, 0) = str_v;
2813 goto unlock;
2814 }
2815 }
2816 }
2817 }
2818 }
2819 }
2820 unlock:
2821 unlock ("ml_whatsunder");
2822
2823 done:
2824 CAMLreturn (ret_v);
2825 }
2826
2827 CAMLprim value ml_seltext (value ptr_v, value rect_v)
2828 {
2829 CAMLparam2 (ptr_v, rect_v);
2830 fz_rect *b;
2831 struct page *page;
2832 struct pagedim *pdim;
2833 int i, x0, x1, y0, y1;
2834 char *s = String_val (ptr_v);
2835 int fi = 0, li = 0;
2836 fz_text_block *block;
2837 fz_text_span *span, *fspan, *lspan;
2838 fz_text_line *line, *fline = NULL, *lline = NULL;
2839
2840 if (trylock ("ml_seltext")) {
2841 goto done;
2842 }
2843
2844 page = parse_pointer ("ml_seltext", s);
2845 ensuretext (page);
2846
2847 pdim = &state.pagedims[page->pdimno];
2848 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
2849 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
2850 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
2851 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
2852
2853 if (0) {
2854 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2855 glColor3ub (128, 128, 128);
2856 glRecti (x0, y0, x1, y1);
2857 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2858 }
2859
2860 fspan = lspan = NULL;
2861
2862 for (block = page->text->blocks;
2863 block < page->text->blocks + page->text->len;
2864 ++block) {
2865 for (line = block->lines;
2866 line < block->lines + block->len;
2867 ++line) {
2868 for (span = line->spans;
2869 span < line->spans + line->len;
2870 ++span) {
2871 for (i = 0; i < span->len; ++i) {
2872 b = &span->text[i].bbox;
2873 int selected = 0;
2874
2875 if (x0 >= b->x0 && x0 <= b->x1
2876 && y0 >= b->y0 && y0 <= b->y1) {
2877 fspan = span;
2878 fline = line;
2879 fi = i;
2880 selected = 1;
2881 }
2882 if (x1 >= b->x0 && x1 <= b->x1
2883 && y1 >= b->y0 && y1 <= b->y1) {
2884 lspan = span;
2885 lline = line;
2886 li = i;
2887 selected = 1;
2888 }
2889 if (0 && selected) {
2890 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2891 glColor3ub (128, 128, 128);
2892 glRecti (b->x0, b->y0, b->x1, b->y1);
2893 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2894 }
2895 }
2896 }
2897 }
2898 }
2899 if (y1 < y0 || x1 < x0) {
2900 int swap = 0;
2901
2902 if (fspan == lspan) {
2903 swap = 1;
2904 }
2905 else {
2906 if (y1 < y0) {
2907 if (fline != lline) {
2908 swap = 1;
2909 }
2910 }
2911 }
2912
2913 if (swap) {
2914 i = fi;
2915 span = fspan;
2916
2917 fi = li;
2918 fspan = lspan;
2919
2920 li = i;
2921 lspan = span;
2922 }
2923 }
2924
2925 page->fmark.i = fi;
2926 page->fmark.span = fspan;
2927
2928 page->lmark.i = li;
2929 page->lmark.span = lspan;
2930
2931 unlock ("ml_seltext");
2932
2933 done:
2934 CAMLreturn (Val_unit);
2935 }
2936
2937 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
2938 {
2939 char buf[4];
2940 int i, len, ret;
2941
2942 for (i = a; i <= b; ++i) {
2943 len = fz_runetochar (buf, span->text[i].c);
2944 ret = fwrite (buf, len, 1, f);
2945
2946 if (ret != 1) {
2947 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
2948 len, ret, strerror (errno));
2949 return -1;
2950 }
2951 }
2952 return 0;
2953 }
2954
2955 #ifdef __CYGWIN__
2956 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
2957 {
2958 caml_failwith ("ml_popen not implemented under Cygwin");
2959 }
2960 #else
2961 CAMLprim value ml_popen (value command_v, value fds_v)
2962 {
2963 CAMLparam2 (command_v, fds_v);
2964 CAMLlocal2 (l_v, tup_v);
2965 int ret;
2966 char *msg = NULL;
2967 value earg_v = Nothing;
2968 posix_spawnattr_t attr;
2969 posix_spawn_file_actions_t fa;
2970 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
2971
2972 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
2973 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
2974 }
2975
2976 if ((ret = posix_spawnattr_init (&attr)) != 0) {
2977 msg = "posix_spawnattr_init";
2978 goto fail1;
2979 }
2980
2981 #ifdef POSIX_SPAWN_USEVFORK
2982 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
2983 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
2984 goto fail;
2985 }
2986 #endif
2987
2988 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
2989 int fd1, fd2;
2990
2991 tup_v = Field (l_v, 0);
2992 fd1 = Int_val (Field (tup_v, 0));
2993 fd2 = Int_val (Field (tup_v, 1));
2994 if (fd2 < 0) {
2995 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
2996 msg = "posix_spawn_file_actions_addclose";
2997 earg_v = tup_v;
2998 goto fail;
2999 }
3000 }
3001 else {
3002 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3003 msg = "posix_spawn_file_actions_adddup2";
3004 earg_v = tup_v;
3005 goto fail;
3006 }
3007 }
3008 }
3009
3010 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
3011 msg = "posix_spawn";
3012 goto fail;
3013 }
3014
3015 fail:
3016 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3017 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3018 }
3019
3020 fail1:
3021 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3022 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3023 strerror (ret));
3024 }
3025
3026 if (msg)
3027 unix_error (ret, msg, earg_v);
3028
3029 CAMLreturn (Val_unit);
3030 }
3031 #endif
3032
3033 CAMLprim value ml_copysel (value fd_v, value ptr_v)
3034 {
3035 CAMLparam1 (ptr_v);
3036 FILE *f;
3037 int seen = 0;
3038 struct page *page;
3039 fz_text_line *line;
3040 fz_text_span *span;
3041 fz_text_block *block;
3042 int fd = Int_val (fd_v);
3043 char *s = String_val (ptr_v);
3044
3045 if (trylock ("ml_copysel")) {
3046 goto done;
3047 }
3048
3049 page = parse_pointer ("ml_sopysel", s);
3050
3051 if (!page->fmark.span || !page->lmark.span) {
3052 fprintf (stderr, "nothing to copy\n");
3053 goto unlock;
3054 }
3055
3056 f = fdopen (fd, "w");
3057 if (!f) {
3058 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3059 strerror (errno));
3060 f = stdout;
3061 }
3062
3063 for (block = page->text->blocks;
3064 block < page->text->blocks + page->text->len;
3065 ++block) {
3066 for (line = block->lines;
3067 line < block->lines + block->len;
3068 ++line) {
3069 for (span = line->spans;
3070 span < line->spans + line->len;
3071 ++span) {
3072 int a, b;
3073
3074 seen |= span == page->fmark.span || span == page->lmark.span;
3075 a = span == page->fmark.span ? page->fmark.i : 0;
3076 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3077
3078 if (seen) {
3079 if (pipespan (f, span, a, b)) {
3080 goto close;
3081 }
3082 if (span == line->spans + line->len - 1) {
3083 if (putc ('\n', f) == EOF) {
3084 fprintf (stderr,
3085 "failed break line on sel pipe: %s\n",
3086 strerror (errno));
3087 goto close;
3088 }
3089 }
3090 if (span == page->lmark.span) {
3091 goto endloop;
3092 }
3093 }
3094 }
3095 }
3096 }
3097 endloop:
3098 page->lmark.span = NULL;
3099 page->fmark.span = NULL;
3100
3101 close:
3102 if (f != stdout) {
3103 int ret = fclose (f);
3104 fd = -1;
3105 if (ret == -1) {
3106 if (errno != ECHILD) {
3107 fprintf (stderr, "failed to close sel pipe: %s\n",
3108 strerror (errno));
3109 }
3110 }
3111 }
3112 unlock:
3113 unlock ("ml_copysel");
3114
3115 done:
3116 if (fd >= 0) {
3117 if (close (fd)) {
3118 fprintf (stderr, "failed to close sel pipe: %s\n",
3119 strerror (errno));
3120 }
3121 }
3122 CAMLreturn (Val_unit);
3123 }
3124
3125 CAMLprim value ml_getpdimrect (value pagedimno_v)
3126 {
3127 CAMLparam1 (pagedimno_v);
3128 CAMLlocal1 (ret_v);
3129 int pagedimno = Int_val (pagedimno_v);
3130 fz_rect box;
3131
3132 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3133 if (trylock ("ml_getpdimrect")) {
3134 box = fz_empty_rect;
3135 }
3136 else {
3137 box = state.pagedims[pagedimno].mediabox;
3138 unlock ("ml_getpdimrect");
3139 }
3140
3141 Store_double_field (ret_v, 0, box.x0);
3142 Store_double_field (ret_v, 1, box.x1);
3143 Store_double_field (ret_v, 2, box.y0);
3144 Store_double_field (ret_v, 3, box.y1);
3145
3146 CAMLreturn (ret_v);
3147 }
3148
3149 static double getmaxw (void)
3150 {
3151 int i;
3152 struct pagedim *p;
3153 double maxw = 0.0;
3154
3155 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3156 double x0, x1, w;
3157
3158 x0 = MIN (p->mediabox.x0, p->mediabox.x1);
3159 x1 = MAX (p->mediabox.x0, p->mediabox.x1);
3160
3161 w = x1 - x0;
3162 maxw = MAX (w, maxw);
3163 }
3164 return maxw;
3165 }
3166
3167 CAMLprim value ml_getmaxw (value unit_v)
3168 {
3169 CAMLparam1 (unit_v);
3170 CAMLlocal1 (ret_v);
3171 double maxw = 0.0;
3172
3173 if (trylock ("ml_getmaxw")) {
3174 goto done;
3175 }
3176 maxw = getmaxw ();
3177 unlock ("ml_getmaxw");
3178 done:
3179 ret_v = caml_copy_double (maxw);
3180 CAMLreturn (ret_v);
3181 }
3182
3183 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3184 value dw_v, value cols_v)
3185 {
3186 CAMLparam3 (winw_v, winh_v, dw_v);
3187 CAMLlocal1 (ret_v);
3188 int i;
3189 double zoom = 1.0;
3190 double maxw = 0.0, maxh = 0.0;
3191 struct pagedim *p;
3192 double winw = Int_val (winw_v);
3193 double winh = Int_val (winh_v);
3194 double dw = Int_val (dw_v);
3195 double cols = Int_val (cols_v);
3196 double pw = 1.0, ph = 1.0, aspect;
3197
3198 if (trylock ("ml_zoom_for_height")) {
3199 goto done;
3200 }
3201
3202 if (state.proportional) {
3203 maxw = getmaxw () / cols;
3204 }
3205
3206 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3207 double x0, x1, y0, y1, w, h, scaledh, scale;
3208 fz_rect rect;
3209
3210 rect = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
3211 p->mediabox);
3212 x0 = MIN (rect.x0, rect.x1);
3213 x1 = MAX (rect.x0, rect.x1);
3214 y0 = MIN (rect.y0, rect.y1);
3215 y1 = MAX (rect.y0, rect.y1);
3216
3217 w = (x1 - x0) / cols;
3218 h = y1 - y0;
3219
3220 if (state.proportional) {
3221 scale = w / maxw;
3222 scaledh = h * scale;
3223 }
3224 else {
3225 scale = 1.0;
3226 scaledh = h;
3227 }
3228
3229 if (scaledh > maxh) {
3230 maxh = scaledh;
3231 ph = scaledh;
3232 pw = w * scale;
3233 }
3234 }
3235
3236 aspect = pw / ph;
3237 zoom = (winh * aspect + dw) / winw;
3238
3239 unlock ("ml_zoom_for_height");
3240 done:
3241 ret_v = caml_copy_double (zoom);
3242 CAMLreturn (ret_v);
3243 }
3244
3245 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3246 {
3247 CAMLparam4 (pt_v, x_v, y_v, string_v);
3248 CAMLlocal1 (ret_v);
3249 int pt = Int_val(pt_v);
3250 int x = Int_val (x_v);
3251 int y = Int_val (y_v);
3252 double w;
3253
3254 w = draw_string (state.face, pt, x, y, String_val (string_v));
3255 ret_v = caml_copy_double (w);
3256 CAMLreturn (ret_v);
3257 }
3258
3259 CAMLprim value ml_measure_string (value pt_v, value string_v)
3260 {
3261 CAMLparam2 (pt_v, string_v);
3262 CAMLlocal1 (ret_v);
3263 int pt = Int_val (pt_v);
3264 double w;
3265
3266 w = measure_string (state.face, pt, String_val (string_v));
3267 ret_v = caml_copy_double (w);
3268 CAMLreturn (ret_v);
3269 }
3270
3271 CAMLprim value ml_getpagebox (value opaque_v)
3272 {
3273 CAMLparam1 (opaque_v);
3274 CAMLlocal1 (ret_v);
3275 fz_rect rect;
3276 fz_bbox bbox;
3277 fz_device *dev;
3278 char *s = String_val (opaque_v);
3279 struct page *page = parse_pointer ("ml_getpagebox", s);
3280
3281 ret_v = caml_alloc_tuple (4);
3282 dev = fz_new_bbox_device (state.ctx, &rect);
3283 dev->hints |= FZ_IGNORE_SHADE;
3284
3285 switch (page->type) {
3286 case DPDF:
3287 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, pagectm (page), NULL);
3288 break;
3289
3290 case DXPS:
3291 xps_run_page (state.u.xps, page->u.xpspage, dev, pagectm (page), NULL);
3292 break;
3293
3294 default:
3295 rect = fz_infinite_rect;
3296 break;
3297 }
3298
3299 fz_free_device (dev);
3300 bbox = fz_round_rect (rect);
3301 Field (ret_v, 0) = Val_int (bbox.x0);
3302 Field (ret_v, 1) = Val_int (bbox.y0);
3303 Field (ret_v, 2) = Val_int (bbox.x1);
3304 Field (ret_v, 3) = Val_int (bbox.y1);
3305
3306 CAMLreturn (ret_v);
3307 }
3308
3309 CAMLprim value ml_setaalevel (value level_v)
3310 {
3311 CAMLparam1 (level_v);
3312
3313 state.aalevel = Int_val (level_v);
3314 CAMLreturn (Val_unit);
3315 }
3316
3317 #undef pixel
3318 #include <X11/Xlib.h>
3319 #include <GL/glx.h>
3320
3321 static struct {
3322 Display *dpy;
3323 GLXContext ctx;
3324 GLXDrawable drawable;
3325 } glx;
3326
3327 #include "keysym2ucs.c"
3328
3329 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3330 {
3331 CAMLparam1 (keysym_v);
3332 CAMLlocal1 (str_v);
3333 KeySym keysym = Int_val (keysym_v);
3334 Rune rune;
3335 int len;
3336 char buf[5];
3337
3338 rune = keysym2ucs (keysym);
3339 len = fz_runetochar (buf, rune);
3340 buf[len] = 0;
3341 str_v = caml_copy_string (buf);
3342 CAMLreturn (str_v);
3343 }
3344
3345 CAMLprim value ml_glx (value win_v)
3346 {
3347 CAMLparam1 (win_v);
3348 XVisualInfo *visual;
3349 int screen, wid = Int_val (win_v);
3350 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3351
3352 glx.dpy = XOpenDisplay (NULL);
3353 if (!glx.dpy) {
3354 caml_failwith ("XOpenDisplay");
3355 }
3356
3357 screen = DefaultScreen (glx.dpy);
3358 visual = glXChooseVisual (glx.dpy, screen, attributes);
3359 if (!visual) {
3360 XCloseDisplay (glx.dpy);
3361 glx.dpy = NULL;
3362 caml_failwith ("glXChooseVisual");
3363 }
3364
3365 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3366 XFree (visual);
3367 if (!glx.ctx) {
3368 XCloseDisplay (glx.dpy);
3369 glx.dpy = NULL;
3370 caml_failwith ("glXCreateContext");
3371 }
3372
3373 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3374 glXDestroyContext (glx.dpy, glx.ctx);
3375 XCloseDisplay (glx.dpy);
3376 glx.dpy = NULL;
3377 glx.ctx = NULL;
3378 caml_failwith ("glXMakeCurrent");
3379 }
3380 glx.drawable = wid;
3381 CAMLreturn (Val_unit);
3382 }
3383
3384 CAMLprim value ml_swapb (value unit_v)
3385 {
3386 CAMLparam1 (unit_v);
3387 glXSwapBuffers (glx.dpy, glx.drawable);
3388 CAMLreturn (Val_unit);
3389 }
3390
3391 CAMLprim value ml_glxsync (value unit_v)
3392 {
3393 CAMLparam1 (unit_v);
3394 if (glx.dpy && glx.ctx) {
3395 glXWaitX ();
3396 glXWaitGL ();
3397 }
3398 CAMLreturn (Val_unit);
3399 }
3400
3401 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3402 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3403
3404 CAMLprim value ml_platform (value unit_v)
3405 {
3406 CAMLparam1 (unit_v);
3407 int platid = piunknown;
3408
3409 #if defined __linux__
3410 platid = pilinux;
3411 #elif defined __CYGWIN__
3412 platid = picygwin;
3413 #elif defined __DragonFly__
3414 platid = pidragonflybsd;
3415 #elif defined __FreeBSD__
3416 platid = pifreebsd;
3417 #elif defined __OpenBSD__
3418 platid = piopenbsd;
3419 #elif defined __NetBSD__
3420 platid = pinetbsd;
3421 #elif defined __sun__
3422 platid = pisun;
3423 #elif defined __APPLE__
3424 platid = piosx;
3425 #endif
3426 CAMLreturn (Val_int (platid));
3427 }
3428
3429 CAMLprim value ml_cloexec (value fd_v)
3430 {
3431 CAMLparam1 (fd_v);
3432 int fd = Int_val (fd_v);
3433
3434 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3435 uerror ("fcntl", Nothing);
3436 }
3437 CAMLreturn (Val_unit);
3438 }
3439
3440 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3441 {
3442 CAMLparam2 (w_v, h_v);
3443 CAMLlocal1 (ret_v);
3444 struct pbo *pbo;
3445 int w = Int_val (w_v);
3446 int h = Int_val (h_v);
3447 int cs = Int_val (cs_v);
3448
3449 if (state.pbo_usable) {
3450 pbo = calloc (sizeof (*pbo), 1);
3451 if (!pbo) {
3452 err (1, "calloc pbo");
3453 }
3454
3455 switch (cs) {
3456 case 0:
3457 case 1:
3458 pbo->size = w*h*4;
3459 break;
3460 case 2:
3461 pbo->size = w*h*2;
3462 break;
3463 default:
3464 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3465 }
3466
3467 state.glGenBuffersARB (1, &pbo->id);
3468 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3469 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3470 NULL, GL_STREAM_DRAW);
3471 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3472 GL_READ_WRITE);
3473 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3474 if (!pbo->ptr) {
3475 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3476 state.glDeleteBuffersARB (1, &pbo->id);
3477 free (pbo);
3478 ret_v = caml_copy_string ("0");
3479 }
3480 else {
3481 int res;
3482 char *s;
3483
3484 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3485 if (res < 0) {
3486 err (1, "snprintf %" FMT_ptr " failed", pbo);
3487 }
3488 s = malloc (res+1);
3489 if (!s) {
3490 err (1, "malloc %d bytes failed", res+1);
3491 }
3492 res = sprintf (s, "%" FMT_ptr, pbo);
3493 if (res < 0) {
3494 err (1, "sprintf %" FMT_ptr " failed", pbo);
3495 }
3496 ret_v = caml_copy_string (s);
3497 free (s);
3498 }
3499 }
3500 else {
3501 ret_v = caml_copy_string ("0");
3502 }
3503 CAMLreturn (ret_v);
3504 }
3505
3506 CAMLprim value ml_freepbo (value s_v)
3507 {
3508 CAMLparam1 (s_v);
3509 char *s = String_val (s_v);
3510 struct tile *tile = parse_pointer ("ml_freepbo", s);
3511
3512 if (tile->pbo) {
3513 state.glDeleteBuffersARB (1, &tile->pbo->id);
3514 tile->pbo->id = -1;
3515 tile->pbo->ptr = NULL;
3516 tile->pbo->size = -1;
3517 }
3518 CAMLreturn (Val_unit);
3519 }
3520
3521 CAMLprim value ml_unmappbo (value s_v)
3522 {
3523 CAMLparam1 (s_v);
3524 char *s = String_val (s_v);
3525 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3526
3527 if (tile->pbo) {
3528 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3529 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3530 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3531 }
3532 tile->pbo->ptr = NULL;
3533 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3534 }
3535 CAMLreturn (Val_unit);
3536 }
3537
3538 static void setuppbo (void)
3539 {
3540 #define GGPA(n) *(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n)
3541 GGPA (glBindBufferARB);
3542 if (state.glBindBufferARB) {
3543 GGPA (glUnmapBufferARB);
3544 if (state.glUnmapBufferARB) {
3545 GGPA (glMapBufferARB);
3546 if (state.glMapBufferARB) {
3547 GGPA (glBufferDataARB);
3548 if (state.glBufferDataARB) {
3549 GGPA (glGenBuffersARB);
3550 if (state.glGenBuffersARB) {
3551 GGPA (glDeleteBuffersARB);
3552 if (state.glDeleteBuffersARB) {
3553 state.pbo_usable = 1;
3554 }
3555 }
3556 }
3557 }
3558 }
3559 }
3560 #undef GGPA
3561 }
3562
3563 CAMLprim value ml_pbo_usable (value unit_v)
3564 {
3565 CAMLparam1 (unit_v);
3566 CAMLreturn (Val_bool (state.pbo_usable));
3567 }
3568
3569 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
3570 {
3571 CAMLparam3 (ptr_v, x_v, y_v);
3572 CAMLlocal2 (ret_v, tup_v);
3573 struct page *page;
3574 char *s = String_val (ptr_v);
3575 int x = Int_val (x_v), y = Int_val (y_v);
3576 struct pagedim *pdim;
3577 fz_point p;
3578 fz_matrix ctm;
3579
3580 page = parse_pointer ("ml_unproject", s);
3581 pdim = &state.pagedims[page->pdimno];
3582
3583 ret_v = Val_int (0);
3584 if (trylock ("ml_unproject")) {
3585 goto done;
3586 }
3587
3588 switch (page->type) {
3589 case DPDF:
3590 ctm = trimctm (page->u.pdfpage, page->pdimno);
3591 break;
3592
3593 default:
3594 ctm = fz_identity;
3595 break;
3596 }
3597 p.x = x;
3598 p.y = y;
3599
3600 ctm = fz_concat (ctm, pdim->ctm);
3601 ctm = fz_invert_matrix (ctm);
3602 p = fz_transform_point (ctm, p);
3603
3604 tup_v = caml_alloc_tuple (2);
3605 ret_v = caml_alloc_small (1, 1);
3606 Field (tup_v, 0) = Val_int (p.x);
3607 Field (tup_v, 1) = Val_int (p.y);
3608 Field (ret_v, 0) = tup_v;
3609
3610 unlock ("ml_unproject");
3611 done:
3612 CAMLreturn (ret_v);
3613 }
3614
3615 CAMLprim value ml_init (value pipe_v, value params_v)
3616 {
3617 CAMLparam2 (pipe_v, params_v);
3618 CAMLlocal2 (trim_v, fuzz_v);
3619 int ret;
3620 int texcount;
3621 char *fontpath;
3622 int colorspace;
3623 int mustoresize;
3624 int haspboext;
3625 struct sigaction sa;
3626
3627 state.cr = Int_val (Field (pipe_v, 0));
3628 state.cw = Int_val (Field (pipe_v, 1));
3629 state.rotate = Int_val (Field (params_v, 0));
3630 state.proportional = Bool_val (Field (params_v, 1));
3631 trim_v = Field (params_v, 2);
3632 texcount = Int_val (Field (params_v, 3));
3633 state.sliceheight = Int_val (Field (params_v, 4));
3634 mustoresize = Int_val (Field (params_v, 5));
3635 colorspace = Int_val (Field (params_v, 6));
3636 fontpath = String_val (Field (params_v, 7));
3637 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3638 if (!state.trimcachepath) {
3639 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
3640 strerror (errno));
3641 }
3642 haspboext = Bool_val (Field (params_v, 9));
3643
3644 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3645
3646 state.trimmargins = Bool_val (Field (trim_v, 0));
3647 fuzz_v = Field (trim_v, 1);
3648 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3649 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3650 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3651 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3652
3653 set_tex_params (colorspace);
3654
3655 if (*fontpath) {
3656 state.face = load_font (fontpath);
3657 }
3658 else {
3659 unsigned int len;
3660 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3661
3662 state.face = load_builtin_font (base, len);
3663 }
3664 if (!state.face) _exit (1);
3665
3666 realloctexts (texcount);
3667
3668 if (haspboext) {
3669 setuppbo ();
3670 }
3671
3672 #ifdef __CYGWIN__
3673 sa.sa_handler = SIG_IGN;
3674 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
3675 #else
3676 sa.sa_handler = SIG_DFL;
3677 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
3678 #endif
3679 if (sigemptyset (&sa.sa_mask)) {
3680 err (1, "sigemptyset");
3681 }
3682 if (sigaction (SIGCHLD, &sa, NULL)) {
3683 err (1, "sigaction");
3684 }
3685
3686 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
3687 if (ret) {
3688 errx (1, "pthread_create: %s", strerror (ret));
3689 }
3690
3691 CAMLreturn (Val_unit);
3692 }
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