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[llpp.git] / link.c
blob375ed40523c9f178d3953b3a95120303c8e56891
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 <stdarg.h>
24 #include <limits.h>
25
26 #include <GL/gl.h>
27
28 #include <caml/fail.h>
29 #include <caml/alloc.h>
30 #include <caml/memory.h>
31 #include <caml/unixsupport.h>
32
33 #include <fitz.h>
34 #include <mupdf.h>
35 #include <mupdf-internal.h>
36 #include <muxps.h>
37 #include <muxps-internal.h>
38 #include <mucbz.h>
39
40 #include FT_FREETYPE_H
41
42 #define PIGGYBACK
43
44 #ifndef __USE_GNU
45 extern char **environ;
46 #endif
47
48 #define MIN(a,b) ((a) < (b) ? (a) : (b))
49 #define MAX(a,b) ((a) > (b) ? (a) : (b))
50
51 #if defined __GNUC__
52 #define NORETURN_ATTR __attribute__ ((noreturn))
53 #define UNUSED_ATTR __attribute__ ((unused))
54 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
55 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
56 #else
57 #define NORETURN_ATTR
58 #define UNUSED_ATTR
59 #define OPTIMIZE_ATTR(n)
60 #define GCC_FMT_ATTR(a, b)
61 #endif
62
63 #define FMT_s "zu"
64
65 #define FMT_ptr "p"
66 #define FMT_ptr_cast(p) (p)
67 #define FMT_ptr_cast2(p) (p)
68
69 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
70 err (int exitcode, const char *fmt, ...)
71 {
72 va_list ap;
73 int savederrno;
74
75 savederrno = errno;
76 va_start (ap, fmt);
77 vfprintf (stderr, fmt, ap);
78 va_end (ap);
79 fprintf (stderr, ": %s\n", strerror (savederrno));
80 fflush (stderr);
81 _exit (exitcode);
82 }
83
84 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
85 errx (int exitcode, const char *fmt, ...)
86 {
87 va_list ap;
88
89 va_start (ap, fmt);
90 vfprintf (stderr, fmt, ap);
91 va_end (ap);
92 fputc ('\n', stderr);
93 fflush (stderr);
94 _exit (exitcode);
95 }
96
97 #ifndef GL_TEXTURE_RECTANGLE_ARB
98 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
99 #endif
100
101 #ifndef GL_BGRA
102 #define GL_BGRA 0x80E1
103 #endif
104
105 #ifndef GL_UNSIGNED_INT_8_8_8_8
106 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
107 #endif
108
109 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
110 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
111 #endif
112
113 #if 0
114 #define lprintf printf
115 #else
116 #define lprintf(...)
117 #endif
118
119 #define ARSERT(cond) for (;;) { \
120 if (!(cond)) { \
121 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
122 } \
123 break; \
124 }
125
126 struct slice {
127 int h;
128 int texindex;
129 };
130
131 struct tile {
132 int x, y, w, h;
133 int slicecount;
134 int sliceheight;
135 struct pbo *pbo;
136 fz_pixmap *pixmap;
137 struct slice slices[1];
138 };
139
140 struct pagedim {
141 int pageno;
142 int rotate;
143 int left;
144 int tctmready;
145 fz_irect bounds;
146 fz_rect pagebox;
147 fz_rect mediabox;
148 fz_matrix ctm, zoomctm, lctm, tctm;
149 };
150
151 struct slink {
152 fz_irect bbox;
153 fz_link *link;
154 };
155
156 enum { DPDF, DXPS, DCBZ };
157
158 struct page {
159 int tgen;
160 int sgen;
161 int type;
162 int pageno;
163 int pdimno;
164 fz_text_page *text;
165 fz_text_sheet *sheet;
166 union {
167 void *ptr;
168 pdf_page *pdfpage;
169 xps_page *xpspage;
170 cbz_page *cbzpage;
171 } u;
172 fz_display_list *dlist;
173 int slinkcount;
174 struct slink *slinks;
175 struct mark {
176 int i;
177 fz_text_span *span;
178 } fmark, lmark;
179 void (*freepage) (void *);
180 };
181
182 struct {
183 int type;
184 int sliceheight;
185 struct pagedim *pagedims;
186 int pagecount;
187 int pagedimcount;
188 union {
189 pdf_document *pdf;
190 xps_document *xps;
191 cbz_document *cbz;
192 } u;
193 fz_context *ctx;
194 int w, h;
195
196 int texindex;
197 int texcount;
198 GLuint *texids;
199
200 GLenum texiform;
201 GLenum texform;
202 GLenum texty;
203
204 fz_colorspace *colorspace;
205
206 struct {
207 int w, h;
208 struct slice *slice;
209 } *texowners;
210
211 int rotate;
212 enum { FitWidth, FitProportional, FitPage } fitmodel;
213 int trimmargins;
214 int needoutline;
215 int gen;
216 int aalevel;
217
218 int trimanew;
219 fz_irect trimfuzz;
220 fz_pixmap *pig;
221
222 pthread_t thread;
223 int cr, cw;
224 FT_Face face;
225
226 void (*closedoc) (void);
227 void (*freepage) (void *);
228
229 char *trimcachepath;
230 int cxack;
231
232 GLuint stid;
233
234 int pbo_usable;
235 void (*glBindBufferARB) (GLenum, GLuint);
236 GLboolean (*glUnmapBufferARB) (GLenum);
237 void *(*glMapBufferARB) (GLenum, GLenum);
238 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
239 void (*glGenBuffersARB) (GLsizei, GLuint *);
240 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
241 } state;
242
243 struct pbo {
244 GLuint id;
245 void *ptr;
246 size_t size;
247 };
248
249 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
250 {
251 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
252 }
253
254 static void UNUSED_ATTR debug_bbox (const char *cap, fz_irect r)
255 {
256 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
257 }
258
259 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
260 {
261 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
262 m.a, m.b, m.c, m.d, m.e, m.f);
263 }
264
265 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
266
267 static void lock (const char *cap)
268 {
269 int ret = pthread_mutex_lock (&mutex);
270 if (ret) {
271 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
272 }
273 }
274
275 static void unlock (const char *cap)
276 {
277 int ret = pthread_mutex_unlock (&mutex);
278 if (ret) {
279 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
280 }
281 }
282
283 static int trylock (const char *cap)
284 {
285 int ret = pthread_mutex_trylock (&mutex);
286 if (ret && ret != EBUSY) {
287 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
288 }
289 return ret == EBUSY;
290 }
291
292 static void *parse_pointer (const char *cap, const char *s)
293 {
294 int ret;
295 void *ptr;
296
297 ret = sscanf (s, "%" FMT_ptr, FMT_ptr_cast (&ptr));
298 if (ret != 1) {
299 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
300 }
301 return ptr;
302 }
303
304 static double now (void)
305 {
306 struct timeval tv;
307
308 if (gettimeofday (&tv, NULL)) {
309 err (1, "gettimeofday");
310 }
311 return tv.tv_sec + tv.tv_usec*1e-6;
312 }
313
314 static int hasdata (void)
315 {
316 int ret, avail;
317 ret = ioctl (state.cr, FIONREAD, &avail);
318 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
319 return avail > 0;
320 }
321
322 CAMLprim value ml_hasdata (value fd_v)
323 {
324 CAMLparam1 (fd_v);
325 int ret, avail;
326
327 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
328 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
329 CAMLreturn (Val_bool (avail > 0));
330 }
331
332 static void readdata (void *p, int size)
333 {
334 ssize_t n;
335
336 again:
337 n = read (state.cr, p, size);
338 if (n < 0) {
339 if (errno == EINTR) goto again;
340 err (1, "read (req %d, ret %zd)", size, n);
341 }
342 if (n - size) {
343 if (!n) errx (1, "EOF while reading");
344 errx (1, "read (req %d, ret %zd)", size, n);
345 }
346 }
347
348 static void writedata (char *p, int size)
349 {
350 char buf[4];
351 ssize_t n;
352
353 buf[0] = (size >> 24) & 0xff;
354 buf[1] = (size >> 16) & 0xff;
355 buf[2] = (size >> 8) & 0xff;
356 buf[3] = (size >> 0) & 0xff;
357
358 n = write (state.cw, buf, 4);
359 if (n != 4) {
360 if (!n) errx (1, "EOF while writing length");
361 err (1, "write %zd", n);
362 }
363
364 n = write (state.cw, p, size);
365 if (n - size) {
366 if (!n) errx (1, "EOF while writing data");
367 err (1, "write (req %d, ret %zd)", size, n);
368 }
369 }
370
371 static int readlen (void)
372 {
373 unsigned char p[4];
374
375 readdata (p, 4);
376 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
377 }
378
379 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
380 {
381 int size = 200, len;
382 va_list ap;
383 char *buf;
384
385 buf = malloc (size);
386 for (;;) {
387 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
388
389 va_start (ap, fmt);
390 len = vsnprintf (buf, size, fmt, ap);
391 va_end (ap);
392
393 if (len > -1 && len < size) {
394 writedata (buf, len);
395 break;
396 }
397
398 if (len > -1) {
399 size = len + 1;
400 }
401 else {
402 size *= 2;
403 }
404 buf = realloc (buf, size);
405 }
406 free (buf);
407 }
408
409 static void closepdf (void)
410 {
411 if (state.u.pdf) {
412 pdf_close_document (state.u.pdf);
413 state.u.pdf = NULL;
414 }
415 }
416
417 static void closexps (void)
418 {
419 if (state.u.xps) {
420 xps_close_document (state.u.xps);
421 state.u.xps = NULL;
422 }
423 }
424
425 static void closecbz (void)
426 {
427 if (state.u.cbz) {
428 cbz_close_document (state.u.cbz);
429 state.u.cbz = NULL;
430 }
431 }
432
433 static void freepdfpage (void *ptr)
434 {
435 pdf_free_page (state.u.pdf, ptr);
436 }
437
438 static void freeemptyxxxpage (void *ptr)
439 {
440 (void) ptr;
441 }
442
443 static void freexpspage (void *ptr)
444 {
445 xps_free_page (state.u.xps, ptr);
446 }
447
448 static void freecbzpage (void *ptr)
449 {
450 cbz_free_page (state.u.cbz, ptr);
451 }
452
453 static void openxref (char *filename, char *password)
454 {
455 int i, len;
456
457 for (i = 0; i < state.texcount; ++i) {
458 state.texowners[i].w = -1;
459 state.texowners[i].slice = NULL;
460 }
461
462 if (state.closedoc) state.closedoc ();
463
464 len = strlen (filename);
465
466 state.type = DPDF;
467 if (len > 4) {
468 char ext[4];
469
470 ext[0] = tolower ((int) filename[len-3]);
471 ext[1] = tolower ((int) filename[len-2]);
472 ext[2] = tolower ((int) filename[len-1]);
473
474 /**/ if (ext[0] == 'x' && ext[1] == 'p' && ext[2] == 's') {
475 state.type = DXPS;
476 }
477 else if (ext[0] == 'c' && ext[1] == 'b' && ext[2] == 'z') {
478 state.type = DCBZ;
479 }
480 }
481
482 if (state.pagedims) {
483 free (state.pagedims);
484 state.pagedims = NULL;
485 }
486 state.pagedimcount = 0;
487
488 fz_set_aa_level (state.ctx, state.aalevel);
489 switch (state.type) {
490 case DPDF:
491 state.u.pdf = pdf_open_document (state.ctx, filename);
492 if (pdf_needs_password (state.u.pdf)) {
493 int okay = pdf_authenticate_password (state.u.pdf, password);
494 if (!okay) {
495 errx (1, "invalid password");
496 }
497 }
498 state.pagecount = pdf_count_pages (state.u.pdf);
499 state.closedoc = closepdf;
500 state.freepage = freepdfpage;
501 break;
502
503 case DXPS:
504 state.u.xps = xps_open_document (state.ctx, filename);
505 state.pagecount = xps_count_pages (state.u.xps);
506 state.closedoc = closexps;
507 state.freepage = freexpspage;
508 break;
509
510 case DCBZ:
511 state.u.cbz = cbz_open_document (state.ctx, filename);
512 state.pagecount = cbz_count_pages (state.u.cbz);
513 state.closedoc = closecbz;
514 state.freepage = freecbzpage;
515 break;
516 }
517 }
518
519 static void pdfinfo (void)
520 {
521 if (state.type == DPDF) {
522 pdf_obj *infoobj;
523
524 printd ("info PDF version\t%d.%d",
525 state.u.pdf->version / 10, state.u.pdf->version % 10);
526
527 infoobj = pdf_dict_gets (pdf_trailer (state.u.pdf), "Info");
528 if (infoobj) {
529 int i;
530 char *s;
531 char *items[] = { "Title", "Author", "Creator",
532 "Producer", "CreationDate" };
533
534 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
535 pdf_obj *obj = pdf_dict_gets (infoobj, items[i]);
536 s = pdf_to_utf8 (state.u.pdf, obj);
537 if (*s) {
538 if (i == 0) {
539 printd ("title %s", s);
540 }
541 printd ("info %s\t%s", items[i], s);
542 }
543 fz_free (state.ctx, s);
544 }
545 }
546 printd ("infoend");
547 }
548 }
549
550 static void unlinktile (struct tile *tile)
551 {
552 int i;
553
554 for (i = 0; i < tile->slicecount; ++i) {
555 struct slice *s = &tile->slices[i];
556
557 if (s->texindex != -1) {
558 if (state.texowners[s->texindex].slice == s) {
559 state.texowners[s->texindex].slice = NULL;
560 }
561 }
562 }
563 }
564
565 static void freepage (struct page *page)
566 {
567 if (page->text) {
568 fz_free_text_page (state.ctx, page->text);
569 }
570 if (page->sheet) {
571 fz_free_text_sheet (state.ctx, page->sheet);
572 }
573 if (page->slinks) {
574 free (page->slinks);
575 }
576 page->freepage (page->u.ptr);
577 fz_free_display_list (state.ctx, page->dlist);
578 free (page);
579 }
580
581 static void freetile (struct tile *tile)
582 {
583 unlinktile (tile);
584 if (!tile->pbo) {
585 #ifndef PIGGYBACK
586 fz_drop_pixmap (state.ctx, tile->pixmap);
587 #else
588 if (state.pig) {
589 fz_drop_pixmap (state.ctx, state.pig);
590 }
591 state.pig = tile->pixmap;
592 #endif
593 }
594 else {
595 free (tile->pbo);
596 fz_drop_pixmap (state.ctx, tile->pixmap);
597 }
598 free (tile);
599 }
600
601 #ifdef __ALTIVEC__
602 #include <stdint.h>
603 #include <altivec.h>
604
605 static int cacheline32bytes;
606
607 static void __attribute__ ((constructor)) clcheck (void)
608 {
609 char **envp = environ;
610 unsigned long *auxv;
611
612 while (*envp++);
613
614 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
615 if (*auxv == 19) {
616 cacheline32bytes = auxv[1] == 32;
617 return;
618 }
619 }
620 }
621
622 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
623 {
624 size_t size = pixmap->w * pixmap->h * pixmap->n;
625 if (cacheline32bytes && size > 32) {
626 intptr_t a1, a2, diff;
627 size_t sizea, i;
628 vector unsigned char v = vec_splat_u8 (-1);
629 vector unsigned char *p;
630
631 a1 = a2 = (intptr_t) pixmap->samples;
632 a2 = (a1 + 31) & ~31;
633 diff = a2 - a1;
634 sizea = size - diff;
635 p = (void *) a2;
636
637 while (a1 != a2) *(char *) a1++ = 0xff;
638 for (i = 0; i < (sizea & ~31); i += 32) {
639 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
640 vec_st (v, i, p);
641 vec_st (v, i + 16, p);
642 }
643 while (i < sizea) *((char *) a1 + i++) = 0xff;
644 }
645 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
646 }
647 #else
648 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
649 #endif
650
651 static void trimctm (pdf_page *page, int pindex)
652 {
653 fz_matrix ctm;
654 struct pagedim *pdim = &state.pagedims[pindex];
655
656 if (!pdim->tctmready) {
657 if (state.trimmargins) {
658 fz_rect realbox;
659 fz_matrix rm, sm, tm, im, ctm1;
660
661 fz_rotate (&rm, -pdim->rotate);
662 fz_scale (&sm, 1, -1);
663 fz_concat (&ctm, &rm, &sm);
664 realbox = pdim->mediabox;
665 fz_transform_rect (&realbox, &ctm);
666 fz_translate (&tm, -realbox.x0, -realbox.y0);
667 fz_concat (&ctm1, &ctm, &tm);
668 fz_invert_matrix (&im, &page->ctm);
669 fz_concat (&ctm, &im, &ctm1);
670 }
671 else {
672 ctm = fz_identity;
673 }
674 pdim->tctm = ctm;
675 pdim->tctmready = 1;
676 }
677 }
678
679 static fz_matrix pagectm (struct page *page)
680 {
681 fz_matrix ctm, tm;
682
683 if (page->type == DPDF) {
684 trimctm (page->u.pdfpage, page->pdimno);
685 fz_concat (&ctm,
686 &state.pagedims[page->pdimno].tctm,
687 &state.pagedims[page->pdimno].ctm);
688 }
689 else {
690 struct pagedim *pdim = &state.pagedims[page->pdimno];
691
692 fz_translate (&tm, -pdim->mediabox.x0, -pdim->mediabox.y0);
693 fz_concat (&ctm, &tm, &state.pagedims[page->pdimno].ctm);
694 }
695 return ctm;
696 }
697
698 static void *loadpage (int pageno, int pindex)
699 {
700 fz_device *dev;
701 struct page *page = NULL;
702
703 page = calloc (sizeof (struct page), 1);
704 if (!page) {
705 err (1, "calloc page %d", pageno);
706 }
707
708 page->dlist = fz_new_display_list (state.ctx);
709 dev = fz_new_list_device (state.ctx, page->dlist);
710 fz_try (state.ctx) {
711 switch (state.type) {
712 case DPDF:
713 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
714 pdf_run_page (state.u.pdf, page->u.pdfpage, dev,
715 &fz_identity, NULL);
716 page->freepage = freepdfpage;
717 break;
718
719 case DXPS:
720 page->u.xpspage = xps_load_page (state.u.xps, pageno);
721 xps_run_page (state.u.xps, page->u.xpspage, dev,
722 &fz_identity, NULL);
723 page->freepage = freexpspage;
724 break;
725
726 case DCBZ:
727 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
728 cbz_run_page (state.u.cbz, page->u.cbzpage, dev,
729 &fz_identity, NULL);
730 page->freepage = freecbzpage;
731 break;
732 }
733 }
734 fz_catch (state.ctx) {
735 page->u.ptr = NULL;
736 page->freepage = freeemptyxxxpage;
737 }
738 fz_free_device (dev);
739
740 page->pdimno = pindex;
741 page->pageno = pageno;
742 page->sgen = state.gen;
743 page->tgen = state.gen;
744 page->type = state.type;
745
746 return page;
747 }
748
749 static struct tile *alloctile (int h)
750 {
751 int i;
752 int slicecount;
753 size_t tilesize;
754 struct tile *tile;
755
756 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
757 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
758 tile = calloc (tilesize, 1);
759 if (!tile) {
760 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
761 }
762 for (i = 0; i < slicecount; ++i) {
763 int sh = MIN (h, state.sliceheight);
764 tile->slices[i].h = sh;
765 tile->slices[i].texindex = -1;
766 h -= sh;
767 }
768 tile->slicecount = slicecount;
769 tile->sliceheight = state.sliceheight;
770 return tile;
771 }
772
773 #ifdef OBSCURED_OPT
774 struct obs {
775 int cured;
776 fz_irect b;
777 };
778
779 static void obs_fill_image (fz_device *dev, fz_image *image,
780 const fz_matrix *ctm, float alpha)
781 {
782 struct obs *obs = dev->user;
783
784 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
785 fz_irect b;
786 fz_rect rect = fz_unit_rect;
787
788 fz_transform_rect (&rect, ctm);
789 fz_round_rect (&b, &rect);
790 fz_intersect_irect (&b, &obs->b);
791 obs->cured = b.x0 == obs->b.x0
792 && b.x1 == obs->b.x1
793 && b.y0 == obs->b.y0
794 && b.y1 == obs->b.y1;
795 }
796 }
797
798 static int obscured (struct page *page, fz_irect bbox)
799 {
800 fz_rect rect;
801 fz_matrix ctm;
802 fz_device dev;
803 struct obs obs;
804
805 memset (&dev, 0, sizeof (dev));
806 memset (&obs, 0, sizeof (obs));
807 dev.hints = 0;
808 dev.flags = 0;
809 dev.user = &obs;
810 dev.ctx = state.ctx;
811 dev.fill_image = obs_fill_image;
812 obs.b = bbox;
813 fz_rect_from_irect (&rect, &bbox);
814 ctm = pagectm (page);
815 fz_run_display_list (page->dlist, &dev, &ctm, &rect, NULL);
816 return obs.cured;
817 }
818 #define OBSCURED obscured
819 #else
820 #define OBSCURED(a, b) 0
821 #endif
822
823 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
824 struct pbo *pbo)
825 {
826 fz_rect rect;
827 fz_irect bbox;
828 fz_matrix ctm;
829 fz_device *dev;
830 struct tile *tile;
831 struct pagedim *pdim;
832
833 tile = alloctile (h);
834 pdim = &state.pagedims[page->pdimno];
835
836 bbox = pdim->bounds;
837 bbox.x0 += x;
838 bbox.y0 += y;
839 bbox.x1 = bbox.x0 + w;
840 bbox.y1 = bbox.y0 + h;
841
842 if (state.pig) {
843 if (state.pig->w == w
844 && state.pig->h == h
845 && state.pig->colorspace == state.colorspace) {
846 tile->pixmap = state.pig;
847 tile->pixmap->x = bbox.x0;
848 tile->pixmap->y = bbox.y0;
849 }
850 else {
851 fz_drop_pixmap (state.ctx, state.pig);
852 }
853 state.pig = NULL;
854 }
855 if (!tile->pixmap) {
856 if (pbo) {
857 tile->pixmap =
858 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
859 &bbox, pbo->ptr);
860 tile->pbo = pbo;
861 }
862 else {
863 tile->pixmap =
864 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox);
865 }
866 }
867
868 tile->w = w;
869 tile->h = h;
870 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
871 clearpixmap (tile->pixmap);
872 }
873 dev = fz_new_draw_device (state.ctx, tile->pixmap);
874 ctm = pagectm (page);
875 fz_rect_from_irect (&rect, &bbox);
876 fz_run_display_list (page->dlist, dev, &ctm, &rect, NULL);
877 fz_free_device (dev);
878
879 return tile;
880 }
881
882 static void initpdims (void)
883 {
884 double start, end;
885 int pageno, trim, show;
886 FILE *trimf = NULL;
887 int trimw = 0, cxcount;
888
889 start = now ();
890
891 if (state.trimmargins && state.trimcachepath) {
892 trimf = fopen (state.trimcachepath, "rb");
893 if (!trimf) {
894 trimf = fopen (state.trimcachepath, "wb");
895 trimw = 1;
896 }
897 }
898
899 if (state.trimmargins || state.type == DPDF || !state.cxack)
900 cxcount = state.pagecount;
901 else
902 cxcount = MIN (state.pagecount, 1);
903
904 for (pageno = 0; pageno < cxcount; ++pageno) {
905 int rotate = 0;
906 struct pagedim *p;
907 fz_rect mediabox;
908
909 switch (state.type) {
910 case DPDF: {
911 pdf_obj *pageobj = state.u.pdf->page_objs[pageno];
912
913 if (state.trimmargins) {
914 pdf_obj *obj;
915 pdf_page *page;
916
917 fz_try (state.ctx) {
918 page = pdf_load_page (state.u.pdf, pageno);
919 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
920 trim = state.trimanew || !obj;
921 if (trim) {
922 fz_rect rect;
923 fz_matrix ctm;
924 fz_device *dev;
925
926 dev = fz_new_bbox_device (state.ctx, &rect);
927 dev->hints |= FZ_IGNORE_SHADE;
928 fz_invert_matrix (&ctm, &page->ctm);
929 pdf_run_page (state.u.pdf, page, dev,
930 &fz_identity, NULL);
931 fz_free_device (dev);
932
933 rect.x0 += state.trimfuzz.x0;
934 rect.x1 += state.trimfuzz.x1;
935 rect.y0 += state.trimfuzz.y0;
936 rect.y1 += state.trimfuzz.y1;
937 fz_transform_rect (&rect, &ctm);
938 fz_intersect_rect (&rect, &page->mediabox);
939
940 if (fz_is_empty_rect (&rect)) {
941 mediabox = page->mediabox;
942 }
943 else {
944 mediabox = rect;
945 }
946
947 obj = pdf_new_array (state.ctx, 4);
948 pdf_array_push (obj,
949 pdf_new_real (state.ctx, mediabox.x0));
950 pdf_array_push (obj,
951 pdf_new_real (state.ctx, mediabox.y0));
952 pdf_array_push (obj,
953 pdf_new_real (state.ctx, mediabox.x1));
954 pdf_array_push (obj,
955 pdf_new_real (state.ctx, mediabox.y1));
956 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
957 }
958 else {
959 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
960 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
961 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
962 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
963 }
964
965 rotate = page->rotate;
966 pdf_free_page (state.u.pdf, page);
967
968 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
969 if (show) {
970 printd ("progress %f Trimming %d",
971 (double) (pageno + 1) / state.pagecount,
972 pageno + 1);
973 }
974 }
975 fz_catch (state.ctx) {
976 fprintf (stderr, "failed to load page %d\n", pageno+1);
977 }
978 }
979 else {
980 fz_rect cropbox;
981
982 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "MediaBox"),
983 &mediabox);
984 if (fz_is_empty_rect (&mediabox)) {
985 fprintf (stderr, "cannot find page size for page %d\n",
986 pageno+1);
987 mediabox.x0 = 0;
988 mediabox.y0 = 0;
989 mediabox.x1 = 612;
990 mediabox.y1 = 792;
991 }
992
993 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "CropBox"),
994 &cropbox);
995 if (!fz_is_empty_rect (&cropbox)) {
996 fz_intersect_rect (&mediabox, &cropbox);
997 }
998 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
999 }
1000 break;
1001 }
1002
1003 case DXPS:
1004 {
1005 xps_page *page;
1006
1007 fz_try (state.ctx) {
1008 page = xps_load_page (state.u.xps, pageno);
1009 xps_bound_page (state.u.xps, page, &mediabox);
1010 rotate = 0;
1011 if (state.trimmargins) {
1012 fz_rect rect;
1013 fz_device *dev;
1014
1015 dev = fz_new_bbox_device (state.ctx, &rect);
1016 dev->hints |= FZ_IGNORE_SHADE;
1017 xps_run_page (state.u.xps, page, dev,
1018 &fz_identity, NULL);
1019 fz_free_device (dev);
1020
1021 rect.x0 += state.trimfuzz.x0;
1022 rect.x1 += state.trimfuzz.x1;
1023 rect.y0 += state.trimfuzz.y0;
1024 rect.y1 += state.trimfuzz.y1;
1025 fz_intersect_rect (&rect, &mediabox);
1026
1027 if (!fz_is_empty_rect (&rect)) {
1028 mediabox = rect;
1029 }
1030 }
1031 xps_free_page (state.u.xps, page);
1032 if (!state.cxack) {
1033 printd ("progress %f loading %d",
1034 (double) (pageno + 1) / state.pagecount,
1035 pageno + 1);
1036 }
1037 }
1038 fz_catch (state.ctx) {
1039 }
1040 }
1041 break;
1042
1043 case DCBZ:
1044 {
1045 rotate = 0;
1046 mediabox.x0 = 0;
1047 mediabox.y0 = 0;
1048 mediabox.x1 = 900;
1049 mediabox.y1 = 900;
1050 if (state.trimmargins && trimw) {
1051 cbz_page *page;
1052
1053 fz_try (state.ctx) {
1054 page = cbz_load_page (state.u.cbz, pageno);
1055 cbz_bound_page (state.u.cbz, page, &mediabox);
1056 cbz_free_page (state.u.cbz, page);
1057 printd ("progress %f Trimming %d",
1058 (double) (pageno + 1) / state.pagecount,
1059 pageno + 1);
1060 }
1061 fz_catch (state.ctx) {
1062 fprintf (stderr, "failed to load page %d\n", pageno+1);
1063 }
1064 if (trimf) {
1065 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1066 if (n - 1) {
1067 err (1, "fwrite trim mediabox");
1068 }
1069 }
1070 }
1071 else {
1072 if (trimf) {
1073 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1074 if (n - 1) {
1075 err (1, "fread trim mediabox");
1076 }
1077 }
1078 else {
1079 if (state.cxack) {
1080 cbz_page *page;
1081 fz_try (state.ctx) {
1082 page = cbz_load_page (state.u.cbz, pageno);
1083 cbz_bound_page (state.u.cbz, page, &mediabox);
1084 cbz_free_page (state.u.cbz, page);
1085 }
1086 fz_catch (state.ctx) {
1087 fprintf (stderr, "failed to load cbz page\n");
1088 }
1089 }
1090 }
1091 }
1092 }
1093 break;
1094
1095 default:
1096 ARSERT (0 && state.type);
1097 }
1098
1099 if (state.pagedimcount == 0
1100 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1101 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1102 size_t size;
1103
1104 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1105 state.pagedims = realloc (state.pagedims, size);
1106 if (!state.pagedims) {
1107 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1108 size, state.pagedimcount + 1);
1109 }
1110
1111 p = &state.pagedims[state.pagedimcount++];
1112 p->rotate = rotate;
1113 p->mediabox = mediabox;
1114 p->pageno = pageno;
1115 }
1116 }
1117 end = now ();
1118 if (state.trimmargins) {
1119 printd ("progress 1 Trimmed %d pages in %f seconds",
1120 state.pagecount, end - start);
1121 }
1122 else {
1123 printd ("vmsg Processed %d pages in %f seconds",
1124 state.pagecount, end - start);
1125 }
1126 state.trimanew = 0;
1127 if (trimf) {
1128 if (fclose (trimf)) {
1129 err (1, "fclose");
1130 }
1131 }
1132 }
1133
1134 static void layout (void)
1135 {
1136 int pindex;
1137 fz_rect box;
1138 fz_matrix ctm, rm;
1139 struct pagedim *p = p;
1140 double zw, w, maxw = 0.0, zoom = zoom;
1141
1142 if (state.pagedimcount == 0) return;
1143
1144 switch (state.fitmodel) {
1145 case FitProportional:
1146 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1147 double x0, x1;
1148
1149 p = &state.pagedims[pindex];
1150 fz_rotate (&rm, p->rotate + state.rotate);
1151 box = p->mediabox;
1152 fz_transform_rect (&box, &rm);
1153
1154 x0 = MIN (box.x0, box.x1);
1155 x1 = MAX (box.x0, box.x1);
1156
1157 w = x1 - x0;
1158 maxw = MAX (w, maxw);
1159 zoom = state.w / maxw;
1160 }
1161 break;
1162
1163 case FitPage:
1164 maxw = state.w;
1165 break;
1166
1167 case FitWidth:
1168 break;
1169
1170 default:
1171 ARSERT (0 && state.fitmodel);
1172 }
1173
1174 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1175 fz_rect rect;
1176 fz_matrix tm, sm;
1177
1178 p = &state.pagedims[pindex];
1179 fz_rotate (&ctm, state.rotate);
1180 fz_rotate (&rm, p->rotate + state.rotate);
1181 box = p->mediabox;
1182 fz_transform_rect (&box, &rm);
1183 w = box.x1 - box.x0;
1184 switch (state.fitmodel) {
1185 case FitProportional:
1186 p->left = ((maxw - w) * zoom) / 2.0;
1187 break;
1188 case FitPage:
1189 {
1190 double zh, h;
1191 zw = maxw / w;
1192 h = box.y1 - box.y0;
1193 zh = state.h / h;
1194 zoom = MIN (zw, zh);
1195 p->left = (maxw - (w * zoom)) / 2.0;
1196 }
1197 break;
1198 case FitWidth:
1199 p->left = 0;
1200 zoom = state.w / w;
1201 break;
1202 }
1203
1204 fz_scale (&p->zoomctm, zoom, zoom);
1205 fz_concat (&ctm, &p->zoomctm, &ctm);
1206
1207 fz_rotate (&rm, p->rotate);
1208 p->pagebox = p->mediabox;
1209 fz_transform_rect (&p->pagebox, &rm);
1210 p->pagebox.x1 -= p->pagebox.x0;
1211 p->pagebox.y1 -= p->pagebox.y0;
1212 p->pagebox.x0 = 0;
1213 p->pagebox.y0 = 0;
1214 rect = p->pagebox;
1215 fz_transform_rect (&rect, &ctm);
1216 fz_round_rect (&p->bounds, &rect);
1217 p->ctm = ctm;
1218
1219 fz_translate (&tm, 0, -p->mediabox.y1);
1220 fz_scale (&sm, zoom, -zoom);
1221 fz_concat (&ctm, &tm, &sm);
1222 fz_concat (&p->lctm, &ctm, &rm);
1223
1224 p->tctmready = 0;
1225 }
1226
1227 do {
1228 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1229 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1230 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1231 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1232 int w = x1 - x0;
1233 int h = y1 - y0;
1234
1235 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1236 } while (p-- != state.pagedims);
1237 }
1238
1239 static
1240 struct anchor { int n; int x; int y; int w; int h; }
1241 desttoanchor (fz_link_dest *dest)
1242 {
1243 int i;
1244 struct anchor a;
1245 struct pagedim *pdim = state.pagedims;
1246
1247 a.n = -1;
1248 a.x = 0;
1249 a.y = 0;
1250 for (i = 0; i < state.pagedimcount; ++i) {
1251 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1252 break;
1253 pdim = &state.pagedims[i];
1254 }
1255 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1256 fz_point p;
1257 if (dest->ld.gotor.flags & fz_link_flag_l_valid)
1258 p.x = dest->ld.gotor.lt.x;
1259 else
1260 p.x = 0.0;
1261 p.y = dest->ld.gotor.lt.y;
1262 fz_transform_point (&p, &pdim->lctm);
1263 a.y = p.y;
1264 a.x = p.x;
1265 }
1266 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1267 double x0, x1, y0, y1;
1268
1269 x0 = MIN (pdim->bounds.x0, pdim->bounds.x1);
1270 x1 = MAX (pdim->bounds.x0, pdim->bounds.x1);
1271 a.w = x1 - x0;
1272 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1273 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1274 a.h = y1 - y0;
1275 a.n = dest->ld.gotor.page;
1276 }
1277 return a;
1278 }
1279
1280 static void recurse_outline (fz_outline *outline, int level)
1281 {
1282 while (outline) {
1283 if (outline->dest.kind == FZ_LINK_GOTO) {
1284 struct anchor a = desttoanchor (&outline->dest);
1285
1286 if (a.n >= 0) {
1287 printd ("o %d %d %d %d %s",
1288 level, a.n, a.y, a.h, outline->title);
1289 }
1290 }
1291 else {
1292 printd ("emsg Unhandled outline kind %d for %s\n",
1293 outline->dest.kind, outline->title);
1294 }
1295 if (outline->down) {
1296 recurse_outline (outline->down, level + 1);
1297 }
1298 outline = outline->next;
1299 }
1300 }
1301
1302 static void process_outline (void)
1303 {
1304 fz_outline *outline;
1305
1306 if (!state.needoutline) return;
1307
1308 state.needoutline = 0;
1309 switch (state.type) {
1310 case DPDF:
1311 outline = pdf_load_outline (state.u.pdf);
1312 break;
1313 case DXPS:
1314 outline = xps_load_outline (state.u.xps);
1315 break;
1316 default:
1317 outline = NULL;
1318 break;
1319 }
1320 if (outline) {
1321 recurse_outline (outline, 0);
1322 fz_free_outline (state.ctx, outline);
1323 }
1324 }
1325
1326 static char *strofspan (fz_text_span *span)
1327 {
1328 char *p;
1329 char utf8[10];
1330 fz_text_char *ch;
1331 size_t size = 0, cap = 80;
1332
1333 p = malloc (cap + 1);
1334 if (!p) return NULL;
1335
1336 for (ch = span->text; ch < span->text + span->len; ++ch) {
1337 int n = fz_runetochar (utf8, ch->c);
1338 if (size + n > cap) {
1339 cap *= 2;
1340 p = realloc (p, cap + 1);
1341 if (!p) return NULL;
1342 }
1343
1344 memcpy (p + size, utf8, n);
1345 size += n;
1346 }
1347 p[size] = 0;
1348 return p;
1349 }
1350
1351 static int matchspan (regex_t *re, fz_text_page *page,
1352 fz_text_span *span, fz_matrix ctm,
1353 int stop, int pageno, double start)
1354 {
1355 int ret;
1356 char *p;
1357 regmatch_t rm;
1358 int a, b, c;
1359 fz_rect sb, eb;
1360 fz_point p1, p2, p3, p4;
1361
1362 p = strofspan (span);
1363 if (!p) return -1;
1364
1365 ret = regexec (re, p, 1, &rm, 0);
1366 if (ret) {
1367 free (p);
1368 if (ret != REG_NOMATCH) {
1369 size_t size;
1370 char errbuf[80];
1371 size = regerror (ret, re, errbuf, sizeof (errbuf));
1372 printd ("msg regexec error `%.*s'",
1373 (int) size, errbuf);
1374 return -1;
1375 }
1376 return 0;
1377 }
1378 else {
1379 int l = span->len;
1380
1381 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1382 c += fz_runelen (span->text[a].c);
1383 }
1384 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1385 c += fz_runelen (span->text[b].c);
1386 }
1387
1388 if (fz_runelen (span->text[b].c) > 1) {
1389 b = MAX (0, b-1);
1390 }
1391
1392 fz_text_char_bbox (&sb, span, a);
1393 fz_text_char_bbox (&eb, span, b);
1394
1395 p1.x = sb.x0;
1396 p1.y = sb.y0;
1397 p2.x = eb.x1;
1398 p2.y = sb.y0;
1399 p3.x = eb.x1;
1400 p3.y = eb.y1;
1401 p4.x = sb.x0;
1402 p4.y = eb.y1;
1403
1404 if (!stop) {
1405 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1406 pageno, 1,
1407 p1.x, p1.y,
1408 p2.x, p2.y,
1409 p3.x, p3.y,
1410 p4.x, p4.y);
1411
1412 printd ("progress 1 found at %d `%.*s' in %f sec",
1413 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1414 now () - start);
1415 }
1416 else {
1417 printd ("match %d %d %f %f %f %f %f %f %f %f",
1418 pageno, 2,
1419 p1.x, p1.y,
1420 p2.x, p2.y,
1421 p3.x, p3.y,
1422 p4.x, p4.y);
1423 }
1424 free (p);
1425 return 1;
1426 }
1427 }
1428
1429 static int compareblocks (const void *l, const void *r)
1430 {
1431 fz_text_block const *ls = l;
1432 fz_text_block const* rs = r;
1433 return ls->bbox.y0 - rs->bbox.y0;
1434 }
1435
1436 /* wishful thinking function */
1437 static void search (regex_t *re, int pageno, int y, int forward)
1438 {
1439 int i, j;
1440 fz_matrix ctm;
1441 fz_device *tdev;
1442 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1443 fz_text_page *text;
1444 fz_text_sheet *sheet;
1445 struct pagedim *pdim, *pdimprev;
1446 int stop = 0, niters = 0;
1447 double start, end;
1448
1449 if (!(state.type == DPDF || state.type == DXPS))
1450 return;
1451
1452 start = now ();
1453 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1454 if (niters++ == 5) {
1455 niters = 0;
1456 if (hasdata ()) {
1457 printd ("progress 1 attention requested aborting search at %d",
1458 pageno);
1459 stop = 1;
1460 }
1461 else {
1462 printd ("progress %f searching in page %d",
1463 (double) (pageno + 1) / state.pagecount,
1464 pageno);
1465 }
1466 }
1467 pdimprev = NULL;
1468 for (i = 0; i < state.pagedimcount; ++i) {
1469 pdim = &state.pagedims[i];
1470 if (pdim->pageno == pageno) {
1471 goto found;
1472 }
1473 if (pdim->pageno > pageno) {
1474 pdim = pdimprev;
1475 goto found;
1476 }
1477 pdimprev = pdim;
1478 }
1479 pdim = pdimprev;
1480 found:
1481
1482 sheet = fz_new_text_sheet (state.ctx);
1483 text = fz_new_text_page (state.ctx, &fz_infinite_rect);
1484 tdev = fz_new_text_device (state.ctx, sheet, text);
1485
1486 switch (state.type) {
1487 case DPDF:
1488 u.ptr = NULL;
1489 fz_try (state.ctx) {
1490 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1491 trimctm (u.pdfpage, pdim - state.pagedims);
1492 fz_concat (&ctm, &pdim->tctm, &pdim->zoomctm);
1493 pdf_run_page (state.u.pdf, u.pdfpage, tdev, &ctm, NULL);
1494 }
1495 fz_catch (state.ctx) {
1496 fz_free_device (tdev);
1497 u.ptr = NULL;
1498 goto nextiter;
1499 }
1500 break;
1501
1502 case DXPS:
1503 u.xpspage = xps_load_page (state.u.xps, pageno);
1504 xps_run_page (state.u.xps, u.xpspage, tdev, &pdim->ctm, NULL);
1505 break;
1506
1507 default:
1508 ARSERT (0 && state.type);
1509 }
1510
1511 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1512 fz_free_device (tdev);
1513
1514 for (j = 0; j < text->len; ++j) {
1515 int k;
1516 fz_page_block *pb;
1517 fz_text_block *block;
1518
1519 pb = &text->blocks[forward ? j : text->len - 1 - j];
1520 if (pb->type != FZ_PAGE_BLOCK_TEXT) continue;
1521 block = pb->u.text;
1522
1523 for (k = 0; k < block->len; ++k) {
1524 fz_text_line *line;
1525 fz_text_span *span;
1526
1527 if (forward) {
1528 line = &block->lines[k];
1529 if (line->bbox.y0 < y + 1) continue;
1530 }
1531 else {
1532 line = &block->lines[block->len - 1 - k];
1533 if (line->bbox.y0 > y - 1) continue;
1534 }
1535
1536 for (span = line->first_span; span; span = span->next) {
1537 switch (matchspan (re, text, span, ctm,
1538 stop, pageno, start)) {
1539 case 0: break;
1540 case 1: stop = 1; break;
1541 case -1: stop = 1; goto endloop;
1542 }
1543 }
1544 }
1545 }
1546 nextiter:
1547 if (forward) {
1548 pageno += 1;
1549 y = 0;
1550 }
1551 else {
1552 pageno -= 1;
1553 y = INT_MAX;
1554 }
1555 endloop:
1556 fz_free_text_page (state.ctx, text);
1557 fz_free_text_sheet (state.ctx, sheet);
1558 if (u.ptr) {
1559 state.freepage (u.ptr);
1560 }
1561 }
1562 end = now ();
1563 if (!stop) {
1564 printd ("progress 1 no matches %f sec", end - start);
1565 }
1566 printd ("clearrects");
1567 }
1568
1569 static void set_tex_params (int colorspace)
1570 {
1571 union {
1572 unsigned char b;
1573 unsigned int s;
1574 } endianness = {1};
1575
1576 switch (colorspace) {
1577 case 0:
1578 state.texiform = GL_RGBA8;
1579 state.texform = GL_RGBA;
1580 state.texty = GL_UNSIGNED_BYTE;
1581 state.colorspace = fz_device_rgb (state.ctx);
1582 break;
1583 case 1:
1584 state.texiform = GL_RGBA8;
1585 state.texform = GL_BGRA;
1586 state.texty = endianness.s > 1
1587 ? GL_UNSIGNED_INT_8_8_8_8
1588 : GL_UNSIGNED_INT_8_8_8_8_REV;
1589 state.colorspace = fz_device_bgr (state.ctx);
1590 break;
1591 case 2:
1592 state.texiform = GL_LUMINANCE_ALPHA;
1593 state.texform = GL_LUMINANCE_ALPHA;
1594 state.texty = GL_UNSIGNED_BYTE;
1595 state.colorspace = fz_device_gray (state.ctx);
1596 break;
1597 default:
1598 errx (1, "invalid colorspce %d", colorspace);
1599 }
1600 }
1601
1602 static void realloctexts (int texcount)
1603 {
1604 size_t size;
1605
1606 if (texcount == state.texcount) return;
1607
1608 if (texcount < state.texcount) {
1609 glDeleteTextures (state.texcount - texcount,
1610 state.texids + texcount);
1611 }
1612
1613 size = texcount * sizeof (*state.texids);
1614 state.texids = realloc (state.texids, size);
1615 if (!state.texids) {
1616 err (1, "realloc texids %" FMT_s, size);
1617 }
1618
1619 size = texcount * sizeof (*state.texowners);
1620 state.texowners = realloc (state.texowners, size);
1621 if (!state.texowners) {
1622 err (1, "realloc texowners %" FMT_s, size);
1623 }
1624 if (texcount > state.texcount) {
1625 int i;
1626
1627 glGenTextures (texcount - state.texcount,
1628 state.texids + state.texcount);
1629 for (i = state.texcount; i < texcount; ++i) {
1630 state.texowners[i].w = -1;
1631 state.texowners[i].slice = NULL;
1632 }
1633 }
1634 state.texcount = texcount;
1635 state.texindex = 0;
1636 }
1637
1638 static char *mbtoutf8 (char *s)
1639 {
1640 char *p, *r;
1641 wchar_t *tmp;
1642 size_t i, ret, len;
1643
1644 len = mbstowcs (NULL, s, strlen (s));
1645 if (len == 0) {
1646 return s;
1647 }
1648 else {
1649 if (len == (size_t) -1) {
1650 return s;
1651 }
1652 }
1653
1654 tmp = malloc (len * sizeof (wchar_t));
1655 if (!tmp) {
1656 return s;
1657 }
1658
1659 ret = mbstowcs (tmp, s, len);
1660 if (ret == (size_t) -1) {
1661 free (tmp);
1662 return s;
1663 }
1664
1665 len = 0;
1666 for (i = 0; i < ret; ++i) {
1667 len += fz_runelen (tmp[i]);
1668 }
1669
1670 p = r = malloc (len + 1);
1671 if (!r) {
1672 free (tmp);
1673 return s;
1674 }
1675
1676 for (i = 0; i < ret; ++i) {
1677 p += fz_runetochar (p, tmp[i]);
1678 }
1679 *p = 0;
1680 free (tmp);
1681 return r;
1682 }
1683
1684 CAMLprim value ml_mbtoutf8 (value s_v)
1685 {
1686 CAMLparam1 (s_v);
1687 CAMLlocal1 (ret_v);
1688 char *s, *r;
1689
1690 s = String_val (s_v);
1691 r = mbtoutf8 (s);
1692 if (r == s) {
1693 ret_v = s_v;
1694 }
1695 else {
1696 ret_v = caml_copy_string (r);
1697 free (r);
1698 }
1699 CAMLreturn (ret_v);
1700 }
1701
1702 static void * mainloop (void *unused)
1703 {
1704 char *p = NULL;
1705 int len, ret, oldlen = 0;
1706
1707 for (;;) {
1708 len = readlen ();
1709 if (len == 0) {
1710 errx (1, "readlen returned 0");
1711 }
1712
1713 if (oldlen < len + 1) {
1714 p = realloc (p, len + 1);
1715 if (!p) {
1716 err (1, "realloc %d failed", len + 1);
1717 }
1718 oldlen = len + 1;
1719 }
1720 readdata (p, len);
1721 p[len] = 0;
1722
1723 if (!strncmp ("open", p, 4)) {
1724 int wthack, off;
1725 char *password;
1726 char *filename;
1727 char *utf8filename;
1728 size_t filenamelen;
1729
1730 ret = sscanf (p + 5, " %d %d %n", &wthack, &state.cxack, &off);
1731 if (ret != 2) {
1732 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1733 }
1734
1735 filename = p + 5 + off;
1736 filenamelen = strlen (filename);
1737 password = filename + filenamelen + 1;
1738
1739 lock ("open");
1740 openxref (filename, password);
1741 pdfinfo ();
1742 initpdims ();
1743 unlock ("open");
1744
1745 if (!wthack) {
1746 utf8filename = mbtoutf8 (filename);
1747 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1748 if (utf8filename != filename) {
1749 free (utf8filename);
1750 }
1751 }
1752 state.needoutline = 1;
1753 }
1754 else if (!strncmp ("cs", p, 2)) {
1755 int i, colorspace;
1756
1757 ret = sscanf (p + 2, " %d", &colorspace);
1758 if (ret != 1) {
1759 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1760 }
1761 lock ("cs");
1762 set_tex_params (colorspace);
1763 for (i = 0; i < state.texcount; ++i) {
1764 state.texowners[i].w = -1;
1765 state.texowners[i].slice = NULL;
1766 }
1767 unlock ("cs");
1768 }
1769 else if (!strncmp ("freepage", p, 8)) {
1770 void *ptr;
1771
1772 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1773 if (ret != 1) {
1774 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1775 }
1776 freepage (ptr);
1777 }
1778 else if (!strncmp ("freetile", p, 8)) {
1779 void *ptr;
1780
1781 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1782 if (ret != 1) {
1783 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1784 }
1785 freetile (ptr);
1786 }
1787 else if (!strncmp ("search", p, 6)) {
1788 int icase, pageno, y, ret, len2, forward;
1789 char *pattern;
1790 regex_t re;
1791
1792 ret = sscanf (p + 6, " %d %d %d %d,%n",
1793 &icase, &pageno, &y, &forward, &len2);
1794 if (ret != 4) {
1795 errx (1, "malformed search `%s' ret=%d", p, ret);
1796 }
1797
1798 pattern = p + 6 + len2;
1799 ret = regcomp (&re, pattern,
1800 REG_EXTENDED | (icase ? REG_ICASE : 0));
1801 if (ret) {
1802 char errbuf[80];
1803 size_t size;
1804
1805 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1806 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1807 }
1808 else {
1809 search (&re, pageno, y, forward);
1810 regfree (&re);
1811 }
1812 }
1813 else if (!strncmp ("geometry", p, 8)) {
1814 int w, h, fitmodel;
1815
1816 printd ("clear");
1817 ret = sscanf (p + 8, " %d %d %d", &w, &h, &fitmodel);
1818 if (ret != 3) {
1819 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1820 }
1821
1822 lock ("geometry");
1823 state.h = h;
1824 if (w != state.w) {
1825 int i;
1826 state.w = w;
1827 for (i = 0; i < state.texcount; ++i) {
1828 state.texowners[i].slice = NULL;
1829 }
1830 }
1831 state.fitmodel = fitmodel;
1832 layout ();
1833 process_outline ();
1834
1835 state.gen++;
1836 unlock ("geometry");
1837 printd ("continue %d", state.pagecount);
1838 }
1839 else if (!strncmp ("reqlayout", p, 9)) {
1840 char *nameddest;
1841 int rotate, fitmodel, off, h;
1842
1843 printd ("clear");
1844 ret = sscanf (p + 9, " %d %d %d %n",
1845 &rotate, &fitmodel, &h, &off);
1846 if (ret != 3) {
1847 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1848 }
1849 lock ("reqlayout");
1850 if (state.rotate != rotate || state.fitmodel != fitmodel) {
1851 state.gen += 1;
1852 }
1853 state.rotate = rotate;
1854 state.fitmodel = fitmodel;
1855 state.h = h;
1856 layout ();
1857 process_outline ();
1858
1859 nameddest = p + 9 + off;
1860 if (state.type == DPDF && nameddest && *nameddest) {
1861 struct anchor a;
1862 fz_link_dest dest;
1863 pdf_obj *needle, *obj;
1864
1865 needle = pdf_new_string (state.ctx, nameddest,
1866 strlen (nameddest));
1867 obj = pdf_lookup_dest (state.u.pdf, needle);
1868 if (obj) {
1869 dest = pdf_parse_link_dest (state.u.pdf, obj);
1870
1871 a = desttoanchor (&dest);
1872 if (a.n >= 0) {
1873 printd ("a %d %d %d", a.n, a.x, a.y);
1874 }
1875 else {
1876 printd ("emsg failed to parse destination `%s'\n",
1877 nameddest);
1878 }
1879 }
1880 else {
1881 printd ("emsg destination `%s' not found\n",
1882 nameddest);
1883 }
1884 pdf_drop_obj (needle);
1885 }
1886
1887 state.gen++;
1888 unlock ("reqlayout");
1889 printd ("continue %d", state.pagecount);
1890 }
1891 else if (!strncmp ("page", p, 4)) {
1892 double a, b;
1893 struct page *page;
1894 int pageno, pindex, ret;
1895
1896 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1897 if (ret != 2) {
1898 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1899 }
1900
1901 lock ("page");
1902 a = now ();
1903 page = loadpage (pageno, pindex);
1904 b = now ();
1905 unlock ("page");
1906
1907 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1908 }
1909 else if (!strncmp ("tile", p, 4)) {
1910 int x, y, w, h, ret;
1911 struct page *page;
1912 struct tile *tile;
1913 double a, b;
1914 void *data;
1915
1916 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1917 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1918 if (ret != 6) {
1919 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1920 }
1921
1922 lock ("tile");
1923 a = now ();
1924 tile = rendertile (page, x, y, w, h, data);
1925 b = now ();
1926 unlock ("tile");
1927
1928 printd ("tile %d %d %" FMT_ptr " %u %f",
1929 x, y,
1930 FMT_ptr_cast2 (tile),
1931 tile->w * tile->h * tile->pixmap->n,
1932 b - a);
1933 }
1934 else if (!strncmp ("settrim", p, 7)) {
1935 fz_irect fuzz;
1936 int trimmargins;
1937
1938 ret = sscanf (p + 7, " %d %d %d %d %d",
1939 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1940 if (ret != 5) {
1941 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1942 }
1943 printd ("clear");
1944 lock ("settrim");
1945 state.trimmargins = trimmargins;
1946 state.needoutline = 1;
1947 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1948 state.trimanew = 1;
1949 state.trimfuzz = fuzz;
1950 }
1951 state.pagedimcount = 0;
1952 free (state.pagedims);
1953 state.pagedims = NULL;
1954 initpdims ();
1955 layout ();
1956 process_outline ();
1957 unlock ("settrim");
1958 printd ("continue %d", state.pagecount);
1959 }
1960 else if (!strncmp ("sliceh", p, 6)) {
1961 int h;
1962
1963 ret = sscanf (p + 6, " %d", &h);
1964 if (ret != 1) {
1965 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1966 }
1967 if (h != state.sliceheight) {
1968 int i;
1969
1970 state.sliceheight = h;
1971 for (i = 0; i < state.texcount; ++i) {
1972 state.texowners[i].w = -1;
1973 state.texowners[i].h = -1;
1974 state.texowners[i].slice = NULL;
1975 }
1976 }
1977 }
1978 else if (!strncmp ("interrupt", p, 9)) {
1979 printd ("vmsg interrupted");
1980 }
1981 else {
1982 errx (1, "unknown command %.*s", len, p);
1983 }
1984 }
1985 return 0;
1986 }
1987
1988 CAMLprim value ml_realloctexts (value texcount_v)
1989 {
1990 CAMLparam1 (texcount_v);
1991 int ok;
1992
1993 if (trylock ("ml_realloctexts")) {
1994 ok = 0;
1995 goto done;
1996 }
1997 realloctexts (Int_val (texcount_v));
1998 ok = 1;
1999 unlock ("ml_realloctexts");
2000
2001 done:
2002 CAMLreturn (Val_bool (ok));
2003 }
2004
2005 static void showsel (struct page *page, int ox, int oy)
2006 {
2007 int seen = 0;
2008 fz_irect bbox;
2009 fz_rect rect;
2010 fz_text_line *line;
2011 fz_page_block *pageb;
2012 fz_text_block *block;
2013 struct mark first, last;
2014
2015 first = page->fmark;
2016 last = page->lmark;
2017
2018 if (!first.span || !last.span) return;
2019
2020 glEnable (GL_BLEND);
2021 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
2022 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
2023
2024 ox += state.pagedims[page->pdimno].bounds.x0;
2025 oy += state.pagedims[page->pdimno].bounds.y0;
2026 for (pageb = page->text->blocks;
2027 pageb < page->text->blocks + page->text->len;
2028 ++pageb) {
2029 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2030 block = pageb->u.text;
2031
2032 for (line = block->lines;
2033 line < block->lines + block->len;
2034 ++line) {
2035 fz_text_span *span;
2036 rect = fz_empty_rect;
2037
2038 for (span = line->first_span; span; span = span->next) {
2039 int i, j, k;
2040 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
2041
2042 j = 0;
2043 k = span->len - 1;
2044
2045 if (span == page->fmark.span && span == page->lmark.span) {
2046 seen = 1;
2047 j = MIN (first.i, last.i);
2048 k = MAX (first.i, last.i);
2049 }
2050 else if (span == first.span) {
2051 seen = 1;
2052 j = first.i;
2053 }
2054 else if (span == last.span) {
2055 seen = 1;
2056 k = last.i;
2057 }
2058
2059 if (seen) {
2060 for (i = j; i <= k; ++i) {
2061 fz_rect bbox;
2062 fz_union_rect (&rect,
2063 fz_text_char_bbox (&bbox, span, i));
2064 }
2065 fz_round_rect (&bbox, &rect);
2066 lprintf ("%d %d %d %d oy=%d ox=%d\n",
2067 bbox.x0,
2068 bbox.y0,
2069 bbox.x1,
2070 bbox.y1,
2071 oy, ox);
2072
2073 glRecti (bbox.x0 + ox, bbox.y0 + oy,
2074 bbox.x1 + ox, bbox.y1 + oy);
2075 if (span == last.span) {
2076 goto done;
2077 }
2078 }
2079 }
2080 }
2081 }
2082 done:
2083 glDisable (GL_BLEND);
2084 }
2085
2086 #include "glfont.c"
2087
2088 static void highlightlinks (struct page *page, int xoff, int yoff)
2089 {
2090 fz_matrix ctm, tm, pm;
2091 fz_link *link, *links;
2092
2093 switch (page->type) {
2094 case DPDF:
2095 links = page->u.pdfpage->links;
2096 break;
2097
2098 case DXPS:
2099 links = page->u.xpspage->links;
2100 break;
2101
2102 default:
2103 return;
2104 }
2105
2106 glEnable (GL_TEXTURE_1D);
2107 glEnable (GL_BLEND);
2108 glBindTexture (GL_TEXTURE_1D, state.stid);
2109
2110 xoff -= state.pagedims[page->pdimno].bounds.x0;
2111 yoff -= state.pagedims[page->pdimno].bounds.y0;
2112 fz_translate (&tm, xoff, yoff);
2113 pm = pagectm (page);
2114 fz_concat (&ctm, &pm, &tm);
2115
2116 glBegin (GL_LINES);
2117 for (link = links; link; link = link->next) {
2118 fz_point p1, p2, p3, p4;
2119
2120 p1.x = link->rect.x0;
2121 p1.y = link->rect.y0;
2122
2123 p2.x = link->rect.x1;
2124 p2.y = link->rect.y0;
2125
2126 p3.x = link->rect.x1;
2127 p3.y = link->rect.y1;
2128
2129 p4.x = link->rect.x0;
2130 p4.y = link->rect.y1;
2131
2132 fz_transform_point (&p1, &ctm);
2133 fz_transform_point (&p2, &ctm);
2134 fz_transform_point (&p3, &ctm);
2135 fz_transform_point (&p4, &ctm);
2136
2137 switch (link->dest.kind) {
2138 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2139 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2140 case FZ_LINK_LAUNCH: glColor3ub (0, 255, 0); break;
2141 default: glColor3ub (0, 0, 0); break;
2142 }
2143
2144 {
2145 float w, h, s, t;
2146
2147 w = p2.x - p1.x;
2148 h = p2.y - p1.y;
2149 t = sqrtf (w*w + h*h) * .25f;
2150
2151 w = p3.x - p2.x;
2152 h = p3.y - p2.y;
2153 s = sqrtf (w*w + h*h) * .25f;
2154
2155 glTexCoord1i (0);
2156 glVertex2f (p1.x, p1.y);
2157 glTexCoord1f (t);
2158 glVertex2f (p2.x, p2.y);
2159
2160 glTexCoord1i (0);
2161 glVertex2f (p2.x, p2.y);
2162 glTexCoord1f (s);
2163 glVertex2f (p3.x, p3.y);
2164
2165 glTexCoord1i (0);
2166 glVertex2f (p3.x, p3.y);
2167 glTexCoord1f (t);
2168 glVertex2f (p4.x, p4.y);
2169
2170 glTexCoord1i (0);
2171 glVertex2f (p4.x, p4.y);
2172 glTexCoord1f (s);
2173 glVertex2f (p1.x, p1.y);
2174 }
2175 }
2176 glEnd ();
2177
2178 glDisable (GL_BLEND);
2179 glDisable (GL_TEXTURE_1D);
2180 }
2181
2182 static int compareslinks (const void *l, const void *r)
2183 {
2184 struct slink const *ls = l;
2185 struct slink const *rs = r;
2186 if (ls->bbox.y0 == rs->bbox.y0) {
2187 return rs->bbox.x0 - rs->bbox.x0;
2188 }
2189 return ls->bbox.y0 - rs->bbox.y0;
2190 }
2191
2192 static void droptext (struct page *page)
2193 {
2194 if (page->text) {
2195 fz_free_text_page (state.ctx, page->text);
2196 page->fmark.i = -1;
2197 page->lmark.i = -1;
2198 page->fmark.span = NULL;
2199 page->lmark.span = NULL;
2200 page->text = NULL;
2201 }
2202 if (page->sheet) {
2203 fz_free_text_sheet (state.ctx, page->sheet);
2204 page->sheet = NULL;
2205 }
2206 }
2207
2208 static void dropslinks (struct page *page)
2209 {
2210 if (page->slinks) {
2211 free (page->slinks);
2212 page->slinks = NULL;
2213 page->slinkcount = 0;
2214 }
2215 }
2216
2217 static void ensureslinks (struct page *page)
2218 {
2219 fz_matrix ctm;
2220 int i, count = 0;
2221 size_t slinksize = sizeof (*page->slinks);
2222 fz_link *link, *links;
2223
2224 if (state.gen != page->sgen) {
2225 dropslinks (page);
2226 page->sgen = state.gen;
2227 }
2228 if (page->slinks) return;
2229
2230 switch (page->type) {
2231 case DPDF:
2232 links = page->u.pdfpage->links;
2233 trimctm (page->u.pdfpage, page->pdimno);
2234 fz_concat (&ctm,
2235 &state.pagedims[page->pdimno].tctm,
2236 &state.pagedims[page->pdimno].ctm);
2237 break;
2238
2239 case DXPS:
2240 links = page->u.xpspage->links;
2241 ctm = state.pagedims[page->pdimno].ctm;
2242 break;
2243
2244 default:
2245 return;
2246 }
2247
2248 for (link = links; link; link = link->next) {
2249 count++;
2250 }
2251 if (count > 0) {
2252 page->slinkcount = count;
2253 page->slinks = calloc (count, slinksize);
2254 if (!page->slinks) {
2255 err (1, "realloc slinks %d", count);
2256 }
2257
2258 for (i = 0, link = links; link; ++i, link = link->next) {
2259 fz_rect rect;
2260
2261 rect = link->rect;
2262 fz_transform_rect (&rect, &ctm);
2263 page->slinks[i].link = link;
2264 fz_round_rect (&page->slinks[i].bbox, &rect);
2265 }
2266 qsort (page->slinks, count, slinksize, compareslinks);
2267 }
2268 }
2269
2270 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2271 static void fmt_linkn (char *s, unsigned int u)
2272 {
2273 unsigned int len; unsigned int q;
2274 int zma = 'z' - 'a' + 1;
2275 len = 1; q = u;
2276 while (q > zma - 1) { ++len; q /= zma; }
2277 if (s) {
2278 s += len;
2279 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2280 /* handles u == 0 */
2281 }
2282 s[len] = 0;
2283 }
2284
2285 static void highlightslinks (struct page *page, int xoff, int yoff,
2286 int noff, char *targ, int tlen, int hfsize)
2287 {
2288 int i;
2289 char buf[40];
2290 struct slink *slink;
2291 double x0, y0, x1, y1, w;
2292
2293 ensureslinks (page);
2294 glColor3ub (0xc3, 0xb0, 0x91);
2295 for (i = 0; i < page->slinkcount; ++i) {
2296 fmt_linkn (buf, i + noff);
2297 if (!tlen || !strncmp (targ, buf, tlen)) {
2298 slink = &page->slinks[i];
2299
2300 x0 = slink->bbox.x0 + xoff - 5;
2301 y1 = slink->bbox.y0 + yoff - 5;
2302 y0 = y1 + 10 + hfsize;
2303 w = measure_string (state.face, hfsize, buf);
2304 x1 = x0 + w + 10;
2305 glRectd (x0, y0, x1, y1);
2306 }
2307 }
2308
2309 glEnable (GL_BLEND);
2310 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2311 glEnable (GL_TEXTURE_2D);
2312 glColor3ub (0, 0, 0);
2313 for (i = 0; i < page->slinkcount; ++i) {
2314 fmt_linkn (buf, i + noff);
2315 if (!tlen || !strncmp (targ, buf, tlen)) {
2316 slink = &page->slinks[i];
2317
2318 x0 = slink->bbox.x0 + xoff;
2319 y0 = slink->bbox.y0 + yoff + hfsize;
2320 draw_string (state.face, hfsize, x0, y0, buf);
2321 }
2322 }
2323 glDisable (GL_TEXTURE_2D);
2324 glDisable (GL_BLEND);
2325 }
2326
2327
2328 static void uploadslice (struct tile *tile, struct slice *slice)
2329 {
2330 int offset;
2331 struct slice *slice1;
2332 unsigned char *texdata;
2333
2334 offset = 0;
2335 for (slice1 = tile->slices; slice != slice1; slice1++) {
2336 offset += slice1->h * tile->w * tile->pixmap->n;
2337 }
2338 if (slice->texindex != -1 && slice->texindex < state.texcount
2339 && state.texowners[slice->texindex].slice == slice) {
2340 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2341 }
2342 else {
2343 int subimage = 0;
2344 int texindex = state.texindex++ % state.texcount;
2345
2346 if (state.texowners[texindex].w == tile->w) {
2347 if (state.texowners[texindex].h >= slice->h) {
2348 subimage = 1;
2349 }
2350 else {
2351 state.texowners[texindex].h = slice->h;
2352 }
2353 }
2354 else {
2355 state.texowners[texindex].h = slice->h;
2356 }
2357
2358 state.texowners[texindex].w = tile->w;
2359 state.texowners[texindex].slice = slice;
2360 slice->texindex = texindex;
2361
2362 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2363 if (tile->pbo) {
2364 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2365 texdata = 0;
2366 }
2367 else {
2368 texdata = tile->pixmap->samples;
2369 }
2370 if (subimage) {
2371 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2372 0,
2373 0,
2374 0,
2375 tile->w,
2376 slice->h,
2377 state.texform,
2378 state.texty,
2379 texdata+offset
2380 );
2381 }
2382 else {
2383 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2384 0,
2385 state.texiform,
2386 tile->w,
2387 slice->h,
2388 0,
2389 state.texform,
2390 state.texty,
2391 texdata+offset
2392 );
2393 }
2394 if (tile->pbo) {
2395 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2396 }
2397 }
2398 }
2399
2400 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2401 {
2402 CAMLparam2 (args_v, ptr_v);
2403 int dispx = Int_val (Field (args_v, 0));
2404 int dispy = Int_val (Field (args_v, 1));
2405 int dispw = Int_val (Field (args_v, 2));
2406 int disph = Int_val (Field (args_v, 3));
2407 int tilex = Int_val (Field (args_v, 4));
2408 int tiley = Int_val (Field (args_v, 5));
2409 char *s = String_val (ptr_v);
2410 struct tile *tile = parse_pointer ("ml_drawtile", s);
2411
2412 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2413 {
2414 int slicey, firstslice;
2415 struct slice *slice;
2416
2417 firstslice = tiley / tile->sliceheight;
2418 slice = &tile->slices[firstslice];
2419 slicey = tiley % tile->sliceheight;
2420
2421 while (disph > 0) {
2422 int dh;
2423
2424 dh = slice->h - slicey;
2425 dh = MIN (disph, dh);
2426 uploadslice (tile, slice);
2427
2428 glBegin (GL_QUADS);
2429 {
2430 glTexCoord2i (tilex, slicey);
2431 glVertex2i (dispx, dispy);
2432
2433 glTexCoord2i (tilex+dispw, slicey);
2434 glVertex2i (dispx+dispw, dispy);
2435
2436 glTexCoord2i (tilex+dispw, slicey+dh);
2437 glVertex2i (dispx+dispw, dispy+dh);
2438
2439 glTexCoord2i (tilex, slicey+dh);
2440 glVertex2i (dispx, dispy+dh);
2441 }
2442 glEnd ();
2443
2444 dispy += dh;
2445 disph -= dh;
2446 slice++;
2447 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2448 slicey = 0;
2449 }
2450 }
2451 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2452 CAMLreturn (Val_unit);
2453 }
2454
2455 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2456 value xoff_v, value yoff_v,
2457 value li_v)
2458 {
2459 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2460 int xoff = Int_val (xoff_v);
2461 int yoff = Int_val (yoff_v);
2462 int noff = Int_val (Field (li_v, 0));
2463 char *targ = String_val (Field (li_v, 1));
2464 int tlen = caml_string_length (Field (li_v, 1));
2465 int hfsize = Int_val (Field (li_v, 2));
2466 char *s = String_val (ptr_v);
2467 int hlmask = Int_val (hlinks_v);
2468 struct page *page = parse_pointer ("ml_postprocess", s);
2469
2470 if (!page->u.ptr) {
2471 /* deal with loadpage failed pages */
2472 goto done;
2473 }
2474
2475 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2476 if (trylock ("ml_postprocess")) {
2477 noff = 0;
2478 goto done;
2479 }
2480 if (hlmask & 2) {
2481 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2482 noff = page->slinkcount;
2483 }
2484 if (page->tgen == state.gen) {
2485 showsel (page, xoff, yoff);
2486 }
2487 unlock ("ml_postprocess");
2488
2489 done:
2490 CAMLreturn (Val_int (noff));
2491 }
2492
2493 static fz_link *getlink (struct page *page, int x, int y)
2494 {
2495 fz_point p;
2496 fz_matrix ctm;
2497 const fz_matrix *tctm;
2498 fz_link *link, *links;
2499
2500 switch (page->type) {
2501 case DPDF:
2502 trimctm (page->u.pdfpage, page->pdimno);
2503 tctm = &state.pagedims[page->pdimno].tctm;
2504 links = page->u.pdfpage->links;
2505 break;
2506
2507 case DXPS:
2508 tctm = &fz_identity;
2509 links = page->u.xpspage->links;
2510 break;
2511
2512 default:
2513 return NULL;
2514 }
2515 p.x = x;
2516 p.y = y;
2517
2518 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2519 fz_invert_matrix (&ctm, &ctm);
2520 fz_transform_point (&p, &ctm);
2521
2522 for (link = links; link; link = link->next) {
2523 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2524 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2525 return link;
2526 }
2527 }
2528 }
2529 return NULL;
2530 }
2531
2532 static void ensuretext (struct page *page)
2533 {
2534 if (state.gen != page->tgen) {
2535 droptext (page);
2536 page->tgen = state.gen;
2537 }
2538 if (!page->text) {
2539 fz_matrix ctm;
2540 fz_device *tdev;
2541
2542 page->text = fz_new_text_page (state.ctx, &fz_infinite_rect);
2543 page->sheet = fz_new_text_sheet (state.ctx);
2544 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2545 ctm = pagectm (page);
2546 fz_run_display_list (page->dlist, tdev, &ctm, &fz_infinite_rect, NULL);
2547 qsort (page->text->blocks, page->text->len,
2548 sizeof (*page->text->blocks), compareblocks);
2549 fz_free_device (tdev);
2550 }
2551 }
2552
2553 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2554 {
2555 CAMLparam2 (start_page_v, dir_v);
2556 CAMLlocal1 (ret_v);
2557 int i, dir = Int_val (dir_v);
2558 int start_page = Int_val (start_page_v);
2559 int end_page = dir > 0 ? state.pagecount : -1;
2560
2561 ret_v = Val_int (0);
2562 if (!(state.type == DPDF || state.type == DXPS)) {
2563 goto done;
2564 }
2565
2566 lock ("ml_findpage_with_links");
2567 for (i = start_page + dir; i != end_page; i += dir) {
2568 int found;
2569
2570 switch (state.type) {
2571 case DPDF:
2572 {
2573 pdf_page *page = NULL;
2574
2575 fz_try (state.ctx) {
2576 page = pdf_load_page (state.u.pdf, i);
2577 found = !!page->links;
2578 }
2579 fz_catch (state.ctx) {
2580 found = 0;
2581 }
2582 if (page) {
2583 freepdfpage (page);
2584 }
2585 }
2586 break;
2587 case DXPS:
2588 {
2589 xps_page *page = xps_load_page (state.u.xps, i);
2590 found = !!page->links;
2591 freexpspage (page);
2592 }
2593 break;
2594
2595 default:
2596 ARSERT (0 && "invalid document type");
2597 }
2598
2599 if (found) {
2600 ret_v = caml_alloc_small (1, 1);
2601 Field (ret_v, 0) = Val_int (i);
2602 goto unlock;
2603 }
2604 }
2605 unlock:
2606 unlock ("ml_findpage_with_links");
2607
2608 done:
2609 CAMLreturn (ret_v);
2610 }
2611
2612 enum { dir_first, dir_last};
2613 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2614
2615 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2616 {
2617 CAMLparam2 (ptr_v, dir_v);
2618 CAMLlocal2 (ret_v, pos_v);
2619 struct page *page;
2620 int dirtag, i, slinkindex;
2621 struct slink *found = NULL ,*slink;
2622 char *s = String_val (ptr_v);
2623
2624 page = parse_pointer ("ml_findlink", s);
2625 ret_v = Val_int (0);
2626 if (trylock ("ml_findlink")) {
2627 goto done;
2628 }
2629
2630 ensureslinks (page);
2631
2632 if (Is_block (dir_v)) {
2633 dirtag = Tag_val (dir_v);
2634 switch (dirtag) {
2635 case dir_first_visible:
2636 {
2637 int x0, y0, dir, first_index, last_index;
2638
2639 pos_v = Field (dir_v, 0);
2640 x0 = Int_val (Field (pos_v, 0));
2641 y0 = Int_val (Field (pos_v, 1));
2642 dir = Int_val (Field (pos_v, 2));
2643
2644 if (dir >= 0) {
2645 dir = 1;
2646 first_index = 0;
2647 last_index = page->slinkcount;
2648 }
2649 else {
2650 first_index = page->slinkcount - 1;
2651 last_index = -1;
2652 }
2653
2654 for (i = first_index; i != last_index; i += dir) {
2655 slink = &page->slinks[i];
2656 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2657 found = slink;
2658 break;
2659 }
2660 }
2661 }
2662 break;
2663
2664 case dir_left:
2665 slinkindex = Int_val (Field (dir_v, 0));
2666 found = &page->slinks[slinkindex];
2667 for (i = slinkindex - 1; i >= 0; --i) {
2668 slink = &page->slinks[i];
2669 if (slink->bbox.x0 < found->bbox.x0) {
2670 found = slink;
2671 break;
2672 }
2673 }
2674 break;
2675
2676 case dir_right:
2677 slinkindex = Int_val (Field (dir_v, 0));
2678 found = &page->slinks[slinkindex];
2679 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2680 slink = &page->slinks[i];
2681 if (slink->bbox.x0 > found->bbox.x0) {
2682 found = slink;
2683 break;
2684 }
2685 }
2686 break;
2687
2688 case dir_down:
2689 slinkindex = Int_val (Field (dir_v, 0));
2690 found = &page->slinks[slinkindex];
2691 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2692 slink = &page->slinks[i];
2693 if (slink->bbox.y0 >= found->bbox.y0) {
2694 found = slink;
2695 break;
2696 }
2697 }
2698 break;
2699
2700 case dir_up:
2701 slinkindex = Int_val (Field (dir_v, 0));
2702 found = &page->slinks[slinkindex];
2703 for (i = slinkindex - 1; i >= 0; --i) {
2704 slink = &page->slinks[i];
2705 if (slink->bbox.y0 <= found->bbox.y0) {
2706 found = slink;
2707 break;
2708 }
2709 }
2710 break;
2711 }
2712 }
2713 else {
2714 dirtag = Int_val (dir_v);
2715 switch (dirtag) {
2716 case dir_first:
2717 found = page->slinks;
2718 break;
2719
2720 case dir_last:
2721 if (page->slinks) {
2722 found = page->slinks + (page->slinkcount - 1);
2723 }
2724 break;
2725 }
2726 }
2727 if (found) {
2728 ret_v = caml_alloc_small (2, 1);
2729 Field (ret_v, 0) = Val_int (found - page->slinks);
2730 }
2731
2732 unlock ("ml_findlink");
2733 done:
2734 CAMLreturn (ret_v);
2735 }
2736
2737 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2738
2739 #define LINKTOVAL \
2740 { \
2741 int pageno; \
2742 \
2743 switch (link->dest.kind) { \
2744 case FZ_LINK_GOTO: \
2745 { \
2746 fz_point p; \
2747 \
2748 pageno = link->dest.ld.gotor.page; \
2749 p.x = 0; \
2750 p.y = 0; \
2751 \
2752 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2753 p.y = link->dest.ld.gotor.lt.y; \
2754 fz_transform_point (&p, &pdim->lctm); \
2755 } \
2756 tup_v = caml_alloc_tuple (2); \
2757 ret_v = caml_alloc_small (1, ugoto); \
2758 Field (tup_v, 0) = Val_int (pageno); \
2759 Field (tup_v, 1) = Val_int (p.y); \
2760 Field (ret_v, 0) = tup_v; \
2761 } \
2762 break; \
2763 \
2764 case FZ_LINK_URI: \
2765 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2766 ret_v = caml_alloc_small (1, uuri); \
2767 Field (ret_v, 0) = str_v; \
2768 break; \
2769 \
2770 case FZ_LINK_LAUNCH: \
2771 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2772 ret_v = caml_alloc_small (1, ulaunch); \
2773 Field (ret_v, 0) = str_v; \
2774 break; \
2775 \
2776 case FZ_LINK_NAMED: \
2777 str_v = caml_copy_string (link->dest.ld.named.named); \
2778 ret_v = caml_alloc_small (1, unamed); \
2779 Field (ret_v, 0) = str_v; \
2780 break; \
2781 \
2782 case FZ_LINK_GOTOR: \
2783 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2784 pageno = link->dest.ld.gotor.page; \
2785 tup_v = caml_alloc_tuple (2); \
2786 ret_v = caml_alloc_small (1, uremote); \
2787 Field (tup_v, 0) = str_v; \
2788 Field (tup_v, 1) = Val_int (pageno); \
2789 Field (ret_v, 0) = tup_v; \
2790 break; \
2791 \
2792 default: \
2793 { \
2794 char buf[80]; \
2795 \
2796 snprintf (buf, sizeof (buf), \
2797 "unhandled link kind %d", link->dest.kind); \
2798 str_v = caml_copy_string (buf); \
2799 ret_v = caml_alloc_small (1, uunexpected); \
2800 Field (ret_v, 0) = str_v; \
2801 } \
2802 break; \
2803 } \
2804 }
2805
2806 CAMLprim value ml_getlink (value ptr_v, value n_v)
2807 {
2808 CAMLparam2 (ptr_v, n_v);
2809 CAMLlocal3 (ret_v, tup_v, str_v);
2810 fz_link *link;
2811 struct page *page;
2812 struct pagedim *pdim;
2813 char *s = String_val (ptr_v);
2814
2815 ret_v = Val_int (0);
2816 if (trylock ("ml_getlink")) {
2817 goto done;
2818 }
2819
2820 page = parse_pointer ("ml_getlink", s);
2821 ensureslinks (page);
2822 pdim = &state.pagedims[page->pdimno];
2823 link = page->slinks[Int_val (n_v)].link;
2824 LINKTOVAL;
2825
2826 unlock ("ml_getlink");
2827 done:
2828 CAMLreturn (ret_v);
2829 }
2830
2831 CAMLprim value ml_getlinkcount (value ptr_v)
2832 {
2833 CAMLparam1 (ptr_v);
2834 struct page *page;
2835 char *s = String_val (ptr_v);
2836
2837 page = parse_pointer ("ml_getlinkcount", s);
2838 CAMLreturn (Val_int (page->slinkcount));
2839 }
2840
2841 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2842 {
2843 CAMLparam2 (ptr_v, n_v);
2844 CAMLlocal1 (ret_v);
2845 struct page *page;
2846 struct slink *slink;
2847 char *s = String_val (ptr_v);
2848
2849 page = parse_pointer ("ml_getlinkrect", s);
2850 ret_v = caml_alloc_tuple (4);
2851 if (trylock ("ml_getlinkrect")) {
2852 Field (ret_v, 0) = Val_int (0);
2853 Field (ret_v, 1) = Val_int (0);
2854 Field (ret_v, 2) = Val_int (0);
2855 Field (ret_v, 3) = Val_int (0);
2856 goto done;
2857 }
2858 ensureslinks (page);
2859
2860 slink = &page->slinks[Int_val (n_v)];
2861 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2862 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2863 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2864 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2865 unlock ("ml_getlinkrect");
2866
2867 done:
2868 CAMLreturn (ret_v);
2869 }
2870
2871 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2872 {
2873 CAMLparam3 (ptr_v, x_v, y_v);
2874 CAMLlocal3 (ret_v, tup_v, str_v);
2875 fz_link *link;
2876 struct page *page;
2877 char *s = String_val (ptr_v);
2878 int x = Int_val (x_v), y = Int_val (y_v);
2879 struct pagedim *pdim;
2880
2881 ret_v = Val_int (0);
2882 if (trylock ("ml_whatsunder")) {
2883 goto done;
2884 }
2885
2886 page = parse_pointer ("ml_whatsunder", s);
2887 pdim = &state.pagedims[page->pdimno];
2888 x += pdim->bounds.x0;
2889 y += pdim->bounds.y0;
2890 link = getlink (page, x, y);
2891 if (link) {
2892 LINKTOVAL;
2893 }
2894 else {
2895 fz_rect *b;
2896 fz_page_block *pageb;
2897 fz_text_block *block;
2898
2899 ensuretext (page);
2900 for (pageb = page->text->blocks;
2901 pageb < page->text->blocks + page->text->len;
2902 ++pageb) {
2903 fz_text_line *line;
2904 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2905 block = pageb->u.text;
2906
2907 b = &block->bbox;
2908 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2909 continue;
2910
2911 for (line = block->lines;
2912 line < block->lines + block->len;
2913 ++line) {
2914 fz_text_span *span;
2915
2916 b = &line->bbox;
2917 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2918 continue;
2919
2920 for (span = line->first_span; span; span = span->next) {
2921 int charnum;
2922
2923 b = &span->bbox;
2924 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2925 continue;
2926
2927 for (charnum = 0; charnum < span->len; ++charnum) {
2928 fz_rect bbox;
2929 fz_text_char_bbox (&bbox, span, charnum);
2930 b = &bbox;
2931
2932 if (x >= b->x0 && x <= b->x1
2933 && y >= b->y0 && y <= b->y1) {
2934 fz_text_style *style = span->text->style;
2935 const char *n2 =
2936 style->font && style->font->name
2937 ? style->font->name
2938 : "Span has no font name"
2939 ;
2940 FT_FaceRec *face = style->font->ft_face;
2941 if (face && face->family_name) {
2942 char *s;
2943 char *n1 = face->family_name;
2944 size_t l1 = strlen (n1);
2945 size_t l2 = strlen (n2);
2946
2947 if (l1 != l2 || memcmp (n1, n2, l1)) {
2948 s = malloc (l1 + l2 + 2);
2949 if (s) {
2950 memcpy (s, n2, l2);
2951 s[l2] = '=';
2952 memcpy (s + l2 + 1, n1, l1 + 1);
2953 str_v = caml_copy_string (s);
2954 free (s);
2955 }
2956 }
2957 }
2958 if (str_v == 0) {
2959 str_v = caml_copy_string (n2);
2960 }
2961 ret_v = caml_alloc_small (1, utext);
2962 Field (ret_v, 0) = str_v;
2963 goto unlock;
2964 }
2965 }
2966 }
2967 }
2968 }
2969 }
2970 unlock:
2971 unlock ("ml_whatsunder");
2972
2973 done:
2974 CAMLreturn (ret_v);
2975 }
2976
2977 enum { mark_page, mark_block, mark_line, mark_word };
2978
2979 static int uninteresting (int c)
2980 {
2981 return c == ' ' || c == '\n' || c == '\t' || c == '\n' || c == '\r'
2982 || ispunct (c);
2983 }
2984
2985 CAMLprim value ml_markunder (value ptr_v, value x_v, value y_v, value mark_v)
2986 {
2987 CAMLparam4 (ptr_v, x_v, y_v, mark_v);
2988 CAMLlocal1 (ret_v);
2989 fz_rect *b;
2990 struct page *page;
2991 fz_text_line *line;
2992 fz_page_block *pageb;
2993 fz_text_block *block;
2994 struct pagedim *pdim;
2995 int mark = Int_val (mark_v);
2996 char *s = String_val (ptr_v);
2997 int x = Int_val (x_v), y = Int_val (y_v);
2998
2999 ret_v = Val_bool (0);
3000 if (trylock ("ml_markunder")) {
3001 goto done;
3002 }
3003
3004 page = parse_pointer ("ml_markunder", s);
3005 pdim = &state.pagedims[page->pdimno];
3006 x += pdim->bounds.x0;
3007 y += pdim->bounds.y0;
3008
3009 ensuretext (page);
3010
3011 if (mark == mark_page) {
3012 int i;
3013
3014 for (i = page->text->len - 1; i >= 0; --i) {
3015 pageb = &page->text->blocks[i];
3016 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3017 }
3018 if (i < 0) goto unlock;
3019
3020 block = pageb->u.text;
3021
3022 page->fmark.i = 0;
3023 page->fmark.span = block->lines->first_span;
3024
3025 line = &block->lines[block->len - 1];
3026 page->lmark.i = line->last_span->len - 1;
3027 page->lmark.span = line->last_span;
3028 ret_v = Val_bool (1);
3029 goto unlock;
3030 }
3031
3032 for (pageb = page->text->blocks;
3033 pageb < page->text->blocks + page->text->len;
3034 ++pageb) {
3035 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3036 block = pageb->u.text;
3037
3038 b = &block->bbox;
3039 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3040 continue;
3041
3042 if (mark == mark_block) {
3043 page->fmark.i = 0;
3044 page->fmark.span = block->lines->first_span;
3045
3046 line = &block->lines[block->len - 1];
3047 page->lmark.i = line->last_span->len - 1;
3048 page->lmark.span = line->last_span;
3049 ret_v = Val_bool (1);
3050 goto unlock;
3051 }
3052
3053 for (line = block->lines;
3054 line < block->lines + block->len;
3055 ++line) {
3056 fz_text_span *span;
3057
3058 b = &line->bbox;
3059 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3060 continue;
3061
3062 if (mark == mark_line) {
3063 page->fmark.i = 0;
3064 page->fmark.span = line->first_span;
3065
3066 page->lmark.i = line->last_span->len - 1;
3067 page->lmark.span = line->last_span;
3068 ret_v = Val_bool (1);
3069 goto unlock;
3070 }
3071
3072 for (span = line->first_span; span; span = span->next) {
3073 int charnum;
3074
3075 b = &span->bbox;
3076 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3077 continue;
3078
3079 for (charnum = 0; charnum < span->len; ++charnum) {
3080 fz_rect bbox;
3081 fz_text_char_bbox (&bbox, span, charnum);
3082 b = &bbox;
3083
3084 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1) {
3085 /* unicode ftw */
3086 int charnum2, charnum3 = -1, charnum4 = -1;
3087
3088 if (uninteresting (span->text[charnum].c)) goto unlock;
3089
3090 for (charnum2 = charnum; charnum2 >= 0; --charnum2) {
3091 if (uninteresting (span->text[charnum2].c)) {
3092 charnum3 = charnum2 + 1;
3093 break;
3094 }
3095 }
3096 if (charnum3 == -1) charnum3 = 0;
3097
3098 for (charnum2 = charnum + 1;
3099 charnum2 < span->len;
3100 ++charnum2) {
3101 if (uninteresting (span->text[charnum2].c)) break;
3102 charnum4 = charnum2;
3103 }
3104 if (charnum4 == -1) goto unlock;
3105
3106 page->fmark.i = charnum3;
3107 page->fmark.span = span;
3108
3109 page->lmark.i = charnum4;
3110 page->lmark.span = span;
3111 ret_v = Val_bool (1);
3112 goto unlock;
3113 }
3114 }
3115 }
3116 }
3117 }
3118 unlock:
3119 if (!Bool_val (ret_v)) {
3120 page->fmark.span = NULL;
3121 page->lmark.span = NULL;
3122 page->fmark.i = 0;
3123 page->lmark.i = 0;
3124 }
3125 unlock ("ml_markunder");
3126
3127 done:
3128 CAMLreturn (ret_v);
3129 }
3130
3131 CAMLprim value ml_rectofblock (value ptr_v, value x_v, value y_v)
3132 {
3133 CAMLparam3 (ptr_v, x_v, y_v);
3134 CAMLlocal2 (ret_v, res_v);
3135 fz_rect *b = NULL;
3136 struct page *page;
3137 fz_page_block *pageb;
3138 struct pagedim *pdim;
3139 char *s = String_val (ptr_v);
3140 int x = Int_val (x_v), y = Int_val (y_v);
3141
3142 ret_v = Val_int (0);
3143 if (trylock ("ml_rectofblock")) {
3144 goto done;
3145 }
3146
3147 page = parse_pointer ("ml_rectofblock", s);
3148 pdim = &state.pagedims[page->pdimno];
3149 x += pdim->bounds.x0;
3150 y += pdim->bounds.y0;
3151
3152 ensuretext (page);
3153
3154 for (pageb = page->text->blocks;
3155 pageb < page->text->blocks + page->text->len;
3156 ++pageb) {
3157 switch (pageb->type) {
3158 case FZ_PAGE_BLOCK_TEXT:
3159 b = &pageb->u.text->bbox;
3160 break;
3161
3162 case FZ_PAGE_BLOCK_IMAGE:
3163 b = &pageb->u.image->bbox;
3164 break;
3165
3166 default:
3167 continue;
3168 }
3169
3170 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1)
3171 break;
3172 b = NULL;
3173 }
3174 if (b) {
3175 res_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3176 ret_v = caml_alloc_small (1, 1);
3177 Store_double_field (res_v, 0, b->x0);
3178 Store_double_field (res_v, 1, b->x1);
3179 Store_double_field (res_v, 2, b->y0);
3180 Store_double_field (res_v, 3, b->y1);
3181 Field (ret_v, 0) = res_v;
3182 }
3183 unlock ("ml_rectofblock");
3184
3185 done:
3186 CAMLreturn (ret_v);
3187 }
3188
3189 CAMLprim value ml_seltext (value ptr_v, value rect_v)
3190 {
3191 CAMLparam2 (ptr_v, rect_v);
3192 fz_rect b;
3193 struct page *page;
3194 struct pagedim *pdim;
3195 int i, x0, x1, y0, y1;
3196 char *s = String_val (ptr_v);
3197 int fi = 0, li = 0;
3198 fz_page_block *pageb;
3199 fz_text_block *block;
3200 fz_text_span *span, *fspan, *lspan;
3201 fz_text_line *line, *fline = NULL, *lline = NULL;
3202
3203 if (trylock ("ml_seltext")) {
3204 goto done;
3205 }
3206
3207 page = parse_pointer ("ml_seltext", s);
3208 ensuretext (page);
3209
3210 pdim = &state.pagedims[page->pdimno];
3211 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
3212 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
3213 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
3214 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
3215
3216 if (0) {
3217 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3218 glColor3ub (128, 128, 128);
3219 glRecti (x0, y0, x1, y1);
3220 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3221 }
3222
3223 fspan = lspan = NULL;
3224
3225 for (pageb= page->text->blocks;
3226 pageb < page->text->blocks + page->text->len;
3227 ++pageb) {
3228 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3229 block = pageb->u.text;
3230 for (line = block->lines;
3231 line < block->lines + block->len;
3232 ++line) {
3233 fz_text_span *span;
3234
3235 for (span = line->first_span; span; span = span->next) {
3236 for (i = 0; i < span->len; ++i) {
3237 int selected = 0;
3238
3239 fz_text_char_bbox (&b, span, i);
3240
3241 if (x0 >= b.x0 && x0 <= b.x1
3242 && y0 >= b.y0 && y0 <= b.y1) {
3243 fspan = span;
3244 fline = line;
3245 fi = i;
3246 selected = 1;
3247 }
3248 if (x1 >= b.x0 && x1 <= b.x1
3249 && y1 >= b.y0 && y1 <= b.y1) {
3250 lspan = span;
3251 lline = line;
3252 li = i;
3253 selected = 1;
3254 }
3255 if (0 && selected) {
3256 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3257 glColor3ub (128, 128, 128);
3258 glRecti (b.x0, b.y0, b.x1, b.y1);
3259 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3260 }
3261 }
3262 }
3263 }
3264 }
3265 if (y1 < y0 || x1 < x0) {
3266 int swap = 0;
3267
3268 if (fspan == lspan) {
3269 swap = 1;
3270 }
3271 else {
3272 if (y1 < y0) {
3273 if (fline != lline) {
3274 swap = 1;
3275 }
3276 }
3277 }
3278
3279 if (swap) {
3280 i = fi;
3281 span = fspan;
3282
3283 fi = li;
3284 fspan = lspan;
3285
3286 li = i;
3287 lspan = span;
3288 }
3289 }
3290
3291 page->fmark.i = fi;
3292 page->fmark.span = fspan;
3293
3294 page->lmark.i = li;
3295 page->lmark.span = lspan;
3296
3297 unlock ("ml_seltext");
3298
3299 done:
3300 CAMLreturn (Val_unit);
3301 }
3302
3303 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
3304 {
3305 char buf[4];
3306 int i, len, ret;
3307
3308 for (i = a; i <= b; ++i) {
3309 len = fz_runetochar (buf, span->text[i].c);
3310 ret = fwrite (buf, len, 1, f);
3311
3312 if (ret != 1) {
3313 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
3314 len, ret, strerror (errno));
3315 return -1;
3316 }
3317 }
3318 return 0;
3319 }
3320
3321 #ifdef __CYGWIN__
3322 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
3323 {
3324 caml_failwith ("ml_popen not implemented under Cygwin");
3325 }
3326 #else
3327 CAMLprim value ml_popen (value command_v, value fds_v)
3328 {
3329 CAMLparam2 (command_v, fds_v);
3330 CAMLlocal2 (l_v, tup_v);
3331 int ret;
3332 char *msg = NULL;
3333 value earg_v = Nothing;
3334 posix_spawnattr_t attr;
3335 posix_spawn_file_actions_t fa;
3336 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
3337
3338 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3339 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3340 }
3341
3342 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3343 msg = "posix_spawnattr_init";
3344 goto fail1;
3345 }
3346
3347 #ifdef POSIX_SPAWN_USEVFORK
3348 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3349 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3350 goto fail;
3351 }
3352 #endif
3353
3354 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3355 int fd1, fd2;
3356
3357 tup_v = Field (l_v, 0);
3358 fd1 = Int_val (Field (tup_v, 0));
3359 fd2 = Int_val (Field (tup_v, 1));
3360 if (fd2 < 0) {
3361 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3362 msg = "posix_spawn_file_actions_addclose";
3363 earg_v = tup_v;
3364 goto fail;
3365 }
3366 }
3367 else {
3368 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3369 msg = "posix_spawn_file_actions_adddup2";
3370 earg_v = tup_v;
3371 goto fail;
3372 }
3373 }
3374 }
3375
3376 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
3377 msg = "posix_spawn";
3378 goto fail;
3379 }
3380
3381 fail:
3382 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3383 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3384 }
3385
3386 fail1:
3387 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3388 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3389 strerror (ret));
3390 }
3391
3392 if (msg)
3393 unix_error (ret, msg, earg_v);
3394
3395 CAMLreturn (Val_unit);
3396 }
3397 #endif
3398
3399 CAMLprim value ml_copysel (value fd_v, value ptr_v, value clear_v)
3400 {
3401 CAMLparam3 (fd_v, ptr_v, clear_v);
3402 FILE *f;
3403 int seen = 0;
3404 struct page *page;
3405 fz_text_line *line;
3406 fz_page_block *pageb;
3407 fz_text_block *block;
3408 int fd = Int_val (fd_v);
3409 char *s = String_val (ptr_v);
3410 int clear = Bool_val (clear_v);
3411
3412 if (trylock ("ml_copysel")) {
3413 goto done;
3414 }
3415
3416 page = parse_pointer ("ml_sopysel", s);
3417
3418 if (!page->fmark.span || !page->lmark.span) {
3419 fprintf (stderr, "nothing to copy\n");
3420 goto unlock;
3421 }
3422
3423 f = fdopen (fd, "w");
3424 if (!f) {
3425 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3426 strerror (errno));
3427 f = stdout;
3428 }
3429
3430 for (pageb = page->text->blocks;
3431 pageb < page->text->blocks + page->text->len;
3432 ++pageb) {
3433 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3434 block = pageb->u.text;
3435 for (line = block->lines;
3436 line < block->lines + block->len;
3437 ++line) {
3438 fz_text_span *span;
3439
3440 for (span = line->first_span; span; span = span->next) {
3441 int a, b;
3442
3443 seen |= span == page->fmark.span || span == page->lmark.span;
3444 a = span == page->fmark.span ? page->fmark.i : 0;
3445 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3446
3447 if (seen) {
3448 if (pipespan (f, span, a, b)) {
3449 goto close;
3450 }
3451 if (span == line->last_span) {
3452 if (putc ('\n', f) == EOF) {
3453 fprintf (stderr,
3454 "failed break line on sel pipe: %s\n",
3455 strerror (errno));
3456 goto close;
3457 }
3458 }
3459 if (span == page->lmark.span) {
3460 goto endloop;
3461 }
3462 }
3463 }
3464 }
3465 }
3466 endloop:
3467 if (clear) {
3468 page->lmark.span = NULL;
3469 page->fmark.span = NULL;
3470 }
3471
3472 close:
3473 if (f != stdout) {
3474 int ret = fclose (f);
3475 fd = -1;
3476 if (ret == -1) {
3477 if (errno != ECHILD) {
3478 fprintf (stderr, "failed to close sel pipe: %s\n",
3479 strerror (errno));
3480 }
3481 }
3482 }
3483 unlock:
3484 unlock ("ml_copysel");
3485
3486 done:
3487 if (fd >= 0) {
3488 if (close (fd)) {
3489 fprintf (stderr, "failed to close sel pipe: %s\n",
3490 strerror (errno));
3491 }
3492 }
3493 CAMLreturn (Val_unit);
3494 }
3495
3496 CAMLprim value ml_getpdimrect (value pagedimno_v)
3497 {
3498 CAMLparam1 (pagedimno_v);
3499 CAMLlocal1 (ret_v);
3500 int pagedimno = Int_val (pagedimno_v);
3501 fz_rect box;
3502
3503 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3504 if (trylock ("ml_getpdimrect")) {
3505 box = fz_empty_rect;
3506 }
3507 else {
3508 box = state.pagedims[pagedimno].mediabox;
3509 unlock ("ml_getpdimrect");
3510 }
3511
3512 Store_double_field (ret_v, 0, box.x0);
3513 Store_double_field (ret_v, 1, box.x1);
3514 Store_double_field (ret_v, 2, box.y0);
3515 Store_double_field (ret_v, 3, box.y1);
3516
3517 CAMLreturn (ret_v);
3518 }
3519
3520 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3521 value dw_v, value cols_v)
3522 {
3523 CAMLparam3 (winw_v, winh_v, dw_v);
3524 CAMLlocal1 (ret_v);
3525 int i;
3526 double zoom = -1.;
3527 double maxh = 0.0;
3528 struct pagedim *p;
3529 double winw = Int_val (winw_v);
3530 double winh = Int_val (winh_v);
3531 double dw = Int_val (dw_v);
3532 double cols = Int_val (cols_v);
3533 double pw = 1.0, ph = 1.0;
3534
3535 if (trylock ("ml_zoom_for_height")) {
3536 goto done;
3537 }
3538
3539 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3540 double w = p->pagebox.x1 / cols;
3541 double h = p->pagebox.y1;
3542 if (h > maxh) {
3543 maxh = h;
3544 ph = h;
3545 if (state.fitmodel != FitProportional) pw = w;
3546 }
3547 if ((state.fitmodel == FitProportional) && w > pw) pw = w;
3548 }
3549
3550 zoom = (((winh / ph) * pw) + dw) / winw;
3551 unlock ("ml_zoom_for_height");
3552 done:
3553 ret_v = caml_copy_double (zoom);
3554 CAMLreturn (ret_v);
3555 }
3556
3557 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3558 {
3559 CAMLparam4 (pt_v, x_v, y_v, string_v);
3560 CAMLlocal1 (ret_v);
3561 int pt = Int_val(pt_v);
3562 int x = Int_val (x_v);
3563 int y = Int_val (y_v);
3564 double w;
3565
3566 w = draw_string (state.face, pt, x, y, String_val (string_v));
3567 ret_v = caml_copy_double (w);
3568 CAMLreturn (ret_v);
3569 }
3570
3571 CAMLprim value ml_measure_string (value pt_v, value string_v)
3572 {
3573 CAMLparam2 (pt_v, string_v);
3574 CAMLlocal1 (ret_v);
3575 int pt = Int_val (pt_v);
3576 double w;
3577
3578 w = measure_string (state.face, pt, String_val (string_v));
3579 ret_v = caml_copy_double (w);
3580 CAMLreturn (ret_v);
3581 }
3582
3583 CAMLprim value ml_getpagebox (value opaque_v)
3584 {
3585 CAMLparam1 (opaque_v);
3586 CAMLlocal1 (ret_v);
3587 fz_rect rect;
3588 fz_irect bbox;
3589 fz_matrix ctm;
3590 fz_device *dev;
3591 char *s = String_val (opaque_v);
3592 struct page *page = parse_pointer ("ml_getpagebox", s);
3593
3594 ret_v = caml_alloc_tuple (4);
3595 dev = fz_new_bbox_device (state.ctx, &rect);
3596 dev->hints |= FZ_IGNORE_SHADE;
3597
3598 switch (page->type) {
3599 case DPDF:
3600 ctm = pagectm (page);
3601 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, &ctm, NULL);
3602 break;
3603
3604 case DXPS:
3605 ctm = pagectm (page);
3606 xps_run_page (state.u.xps, page->u.xpspage, dev, &ctm, NULL);
3607 break;
3608
3609 default:
3610 rect = fz_infinite_rect;
3611 break;
3612 }
3613
3614 fz_free_device (dev);
3615 fz_round_rect (&bbox, &rect);
3616 Field (ret_v, 0) = Val_int (bbox.x0);
3617 Field (ret_v, 1) = Val_int (bbox.y0);
3618 Field (ret_v, 2) = Val_int (bbox.x1);
3619 Field (ret_v, 3) = Val_int (bbox.y1);
3620
3621 CAMLreturn (ret_v);
3622 }
3623
3624 CAMLprim value ml_setaalevel (value level_v)
3625 {
3626 CAMLparam1 (level_v);
3627
3628 state.aalevel = Int_val (level_v);
3629 CAMLreturn (Val_unit);
3630 }
3631
3632 #undef pixel
3633 #include <X11/Xlib.h>
3634 #include <GL/glx.h>
3635
3636 static struct {
3637 Display *dpy;
3638 GLXContext ctx;
3639 GLXDrawable drawable;
3640 } glx;
3641
3642 #include "keysym2ucs.c"
3643
3644 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3645 {
3646 CAMLparam1 (keysym_v);
3647 CAMLlocal1 (str_v);
3648 KeySym keysym = Int_val (keysym_v);
3649 Rune rune;
3650 int len;
3651 char buf[5];
3652
3653 rune = keysym2ucs (keysym);
3654 len = fz_runetochar (buf, rune);
3655 buf[len] = 0;
3656 str_v = caml_copy_string (buf);
3657 CAMLreturn (str_v);
3658 }
3659
3660 CAMLprim value ml_glx (value win_v)
3661 {
3662 CAMLparam1 (win_v);
3663 XVisualInfo *visual;
3664 int screen, wid = Int_val (win_v);
3665 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3666
3667 glx.dpy = XOpenDisplay (NULL);
3668 if (!glx.dpy) {
3669 caml_failwith ("XOpenDisplay");
3670 }
3671
3672 screen = DefaultScreen (glx.dpy);
3673 visual = glXChooseVisual (glx.dpy, screen, attributes);
3674 if (!visual) {
3675 XCloseDisplay (glx.dpy);
3676 glx.dpy = NULL;
3677 caml_failwith ("glXChooseVisual");
3678 }
3679
3680 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3681 XFree (visual);
3682 if (!glx.ctx) {
3683 XCloseDisplay (glx.dpy);
3684 glx.dpy = NULL;
3685 caml_failwith ("glXCreateContext");
3686 }
3687
3688 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3689 glXDestroyContext (glx.dpy, glx.ctx);
3690 XCloseDisplay (glx.dpy);
3691 glx.dpy = NULL;
3692 glx.ctx = NULL;
3693 caml_failwith ("glXMakeCurrent");
3694 }
3695 glx.drawable = wid;
3696 CAMLreturn (Val_unit);
3697 }
3698
3699 CAMLprim value ml_swapb (value unit_v)
3700 {
3701 CAMLparam1 (unit_v);
3702 glXSwapBuffers (glx.dpy, glx.drawable);
3703 CAMLreturn (Val_unit);
3704 }
3705
3706 CAMLprim value ml_glxsync (value unit_v)
3707 {
3708 CAMLparam1 (unit_v);
3709 if (glx.dpy && glx.ctx) {
3710 glXWaitX ();
3711 glXWaitGL ();
3712 }
3713 CAMLreturn (Val_unit);
3714 }
3715
3716 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3717 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3718
3719 CAMLprim value ml_platform (value unit_v)
3720 {
3721 CAMLparam1 (unit_v);
3722 int platid = piunknown;
3723
3724 #if defined __linux__
3725 platid = pilinux;
3726 #elif defined __CYGWIN__
3727 platid = picygwin;
3728 #elif defined __DragonFly__
3729 platid = pidragonflybsd;
3730 #elif defined __FreeBSD__
3731 platid = pifreebsd;
3732 #elif defined __OpenBSD__
3733 platid = piopenbsd;
3734 #elif defined __NetBSD__
3735 platid = pinetbsd;
3736 #elif defined __sun__
3737 platid = pisun;
3738 #elif defined __APPLE__
3739 platid = piosx;
3740 #endif
3741 CAMLreturn (Val_int (platid));
3742 }
3743
3744 CAMLprim value ml_cloexec (value fd_v)
3745 {
3746 CAMLparam1 (fd_v);
3747 int fd = Int_val (fd_v);
3748
3749 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3750 uerror ("fcntl", Nothing);
3751 }
3752 CAMLreturn (Val_unit);
3753 }
3754
3755 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3756 {
3757 CAMLparam2 (w_v, h_v);
3758 CAMLlocal1 (ret_v);
3759 struct pbo *pbo;
3760 int w = Int_val (w_v);
3761 int h = Int_val (h_v);
3762 int cs = Int_val (cs_v);
3763
3764 if (state.pbo_usable) {
3765 pbo = calloc (sizeof (*pbo), 1);
3766 if (!pbo) {
3767 err (1, "calloc pbo");
3768 }
3769
3770 switch (cs) {
3771 case 0:
3772 case 1:
3773 pbo->size = w*h*4;
3774 break;
3775 case 2:
3776 pbo->size = w*h*2;
3777 break;
3778 default:
3779 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3780 }
3781
3782 state.glGenBuffersARB (1, &pbo->id);
3783 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3784 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3785 NULL, GL_STREAM_DRAW);
3786 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3787 GL_READ_WRITE);
3788 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3789 if (!pbo->ptr) {
3790 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3791 state.glDeleteBuffersARB (1, &pbo->id);
3792 free (pbo);
3793 ret_v = caml_copy_string ("0");
3794 }
3795 else {
3796 int res;
3797 char *s;
3798
3799 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3800 if (res < 0) {
3801 err (1, "snprintf %" FMT_ptr " failed", pbo);
3802 }
3803 s = malloc (res+1);
3804 if (!s) {
3805 err (1, "malloc %d bytes failed", res+1);
3806 }
3807 res = sprintf (s, "%" FMT_ptr, pbo);
3808 if (res < 0) {
3809 err (1, "sprintf %" FMT_ptr " failed", pbo);
3810 }
3811 ret_v = caml_copy_string (s);
3812 free (s);
3813 }
3814 }
3815 else {
3816 ret_v = caml_copy_string ("0");
3817 }
3818 CAMLreturn (ret_v);
3819 }
3820
3821 CAMLprim value ml_freepbo (value s_v)
3822 {
3823 CAMLparam1 (s_v);
3824 char *s = String_val (s_v);
3825 struct tile *tile = parse_pointer ("ml_freepbo", s);
3826
3827 if (tile->pbo) {
3828 state.glDeleteBuffersARB (1, &tile->pbo->id);
3829 tile->pbo->id = -1;
3830 tile->pbo->ptr = NULL;
3831 tile->pbo->size = -1;
3832 }
3833 CAMLreturn (Val_unit);
3834 }
3835
3836 CAMLprim value ml_unmappbo (value s_v)
3837 {
3838 CAMLparam1 (s_v);
3839 char *s = String_val (s_v);
3840 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3841
3842 if (tile->pbo) {
3843 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3844 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3845 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3846 }
3847 tile->pbo->ptr = NULL;
3848 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3849 }
3850 CAMLreturn (Val_unit);
3851 }
3852
3853 static void setuppbo (void)
3854 {
3855 #define GGPA(n) *(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n)
3856 GGPA (glBindBufferARB);
3857 if (state.glBindBufferARB) {
3858 GGPA (glUnmapBufferARB);
3859 if (state.glUnmapBufferARB) {
3860 GGPA (glMapBufferARB);
3861 if (state.glMapBufferARB) {
3862 GGPA (glBufferDataARB);
3863 if (state.glBufferDataARB) {
3864 GGPA (glGenBuffersARB);
3865 if (state.glGenBuffersARB) {
3866 GGPA (glDeleteBuffersARB);
3867 if (state.glDeleteBuffersARB) {
3868 state.pbo_usable = 1;
3869 }
3870 }
3871 }
3872 }
3873 }
3874 }
3875 #undef GGPA
3876 }
3877
3878 CAMLprim value ml_pbo_usable (value unit_v)
3879 {
3880 CAMLparam1 (unit_v);
3881 CAMLreturn (Val_bool (state.pbo_usable));
3882 }
3883
3884 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
3885 {
3886 CAMLparam3 (ptr_v, x_v, y_v);
3887 CAMLlocal2 (ret_v, tup_v);
3888 struct page *page;
3889 char *s = String_val (ptr_v);
3890 int x = Int_val (x_v), y = Int_val (y_v);
3891 struct pagedim *pdim;
3892 fz_point p;
3893 fz_matrix ctm;
3894
3895 page = parse_pointer ("ml_unproject", s);
3896 pdim = &state.pagedims[page->pdimno];
3897
3898 ret_v = Val_int (0);
3899 if (trylock ("ml_unproject")) {
3900 goto done;
3901 }
3902
3903 switch (page->type) {
3904 case DPDF:
3905 trimctm (page->u.pdfpage, page->pdimno);
3906 break;
3907
3908 default:
3909 break;
3910 }
3911 p.x = x;
3912 p.y = y;
3913
3914 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
3915 fz_invert_matrix (&ctm, &ctm);
3916 fz_transform_point (&p, &ctm);
3917
3918 tup_v = caml_alloc_tuple (2);
3919 ret_v = caml_alloc_small (1, 1);
3920 Field (tup_v, 0) = Val_int (p.x);
3921 Field (tup_v, 1) = Val_int (p.y);
3922 Field (ret_v, 0) = tup_v;
3923
3924 unlock ("ml_unproject");
3925 done:
3926 CAMLreturn (ret_v);
3927 }
3928
3929 static void makestippletex (void)
3930 {
3931 const char pixels[] = "\xff\xff\0\0";
3932 glGenTextures (1, &state.stid);
3933 glBindTexture (GL_TEXTURE_1D, state.stid);
3934 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
3935 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
3936 glTexImage1D (
3937 GL_TEXTURE_1D,
3938 0,
3939 GL_ALPHA,
3940 4,
3941 0,
3942 GL_ALPHA,
3943 GL_UNSIGNED_BYTE,
3944 pixels
3945 );
3946 }
3947
3948 CAMLprim value ml_init (value pipe_v, value params_v)
3949 {
3950 CAMLparam2 (pipe_v, params_v);
3951 CAMLlocal2 (trim_v, fuzz_v);
3952 int ret;
3953 int texcount;
3954 char *fontpath;
3955 int colorspace;
3956 int mustoresize;
3957 int haspboext;
3958 struct sigaction sa;
3959
3960 state.cr = Int_val (Field (pipe_v, 0));
3961 state.cw = Int_val (Field (pipe_v, 1));
3962 state.rotate = Int_val (Field (params_v, 0));
3963 state.fitmodel = Int_val (Field (params_v, 1));
3964 trim_v = Field (params_v, 2);
3965 texcount = Int_val (Field (params_v, 3));
3966 state.sliceheight = Int_val (Field (params_v, 4));
3967 mustoresize = Int_val (Field (params_v, 5));
3968 colorspace = Int_val (Field (params_v, 6));
3969 fontpath = String_val (Field (params_v, 7));
3970 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3971 if (!state.trimcachepath) {
3972 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
3973 strerror (errno));
3974 }
3975 haspboext = Bool_val (Field (params_v, 9));
3976
3977 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3978
3979 state.trimmargins = Bool_val (Field (trim_v, 0));
3980 fuzz_v = Field (trim_v, 1);
3981 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3982 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3983 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3984 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3985
3986 set_tex_params (colorspace);
3987
3988 if (*fontpath) {
3989 state.face = load_font (fontpath);
3990 }
3991 else {
3992 unsigned int len;
3993 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3994
3995 state.face = load_builtin_font (base, len);
3996 }
3997 if (!state.face) _exit (1);
3998
3999 realloctexts (texcount);
4000
4001 if (haspboext) {
4002 setuppbo ();
4003 }
4004
4005 makestippletex ();
4006 #ifdef __CYGWIN__
4007 sa.sa_handler = SIG_IGN;
4008 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
4009 #else
4010 sa.sa_handler = SIG_DFL;
4011 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
4012 #endif
4013 if (sigemptyset (&sa.sa_mask)) {
4014 err (1, "sigemptyset");
4015 }
4016 if (sigaction (SIGCHLD, &sa, NULL)) {
4017 err (1, "sigaction");
4018 }
4019
4020 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
4021 if (ret) {
4022 errx (1, "pthread_create: %s", strerror (ret));
4023 }
4024
4025 CAMLreturn (Val_unit);
4026 }
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