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[llpp.git] / link.c
blobd8a64a6128b455fdea978393e7f39ba299fbe6e3
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 printd ("progress %f loading %d",
1033 (double) (pageno + 1) / state.pagecount,
1034 pageno + 1);
1035 }
1036 fz_catch (state.ctx) {
1037 }
1038 }
1039 break;
1040
1041 case DCBZ:
1042 {
1043 rotate = 0;
1044 if (state.trimmargins && trimw) {
1045 cbz_page *page;
1046
1047 fz_try (state.ctx) {
1048 page = cbz_load_page (state.u.cbz, pageno);
1049 cbz_bound_page (state.u.cbz, page, &mediabox);
1050 cbz_free_page (state.u.cbz, page);
1051 printd ("progress %f Trimming %d",
1052 (double) (pageno + 1) / state.pagecount,
1053 pageno + 1);
1054 }
1055 fz_catch (state.ctx) {
1056 fprintf (stderr, "failed to load page %d\n", pageno+1);
1057 mediabox.x0 = 0;
1058 mediabox.y0 = 0;
1059 mediabox.x1 = 900;
1060 mediabox.y1 = 900;
1061 }
1062 if (trimf) {
1063 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1064 if (n - 1) {
1065 err (1, "fwrite trim mediabox");
1066 }
1067 }
1068 }
1069 else {
1070 if (trimf) {
1071 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1072 if (n - 1) {
1073 err (1, "fread trim mediabox");
1074 }
1075 }
1076 else {
1077 mediabox.x0 = mediabox.y0 = 0;
1078 mediabox.x1 = 900;
1079 mediabox.y1 = 900;
1080 }
1081 }
1082 }
1083 break;
1084
1085 default:
1086 ARSERT (0 && state.type);
1087 }
1088
1089 if (state.pagedimcount == 0
1090 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1091 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1092 size_t size;
1093
1094 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1095 state.pagedims = realloc (state.pagedims, size);
1096 if (!state.pagedims) {
1097 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1098 size, state.pagedimcount + 1);
1099 }
1100
1101 p = &state.pagedims[state.pagedimcount++];
1102 p->rotate = rotate;
1103 p->mediabox = mediabox;
1104 p->pageno = pageno;
1105 }
1106 }
1107 end = now ();
1108 if (state.trimmargins) {
1109 printd ("progress 1 Trimmed %d pages in %f seconds",
1110 state.pagecount, end - start);
1111 }
1112 else {
1113 printd ("vmsg Processed %d pages in %f seconds",
1114 state.pagecount, end - start);
1115 }
1116 state.trimanew = 0;
1117 if (trimf) {
1118 if (fclose (trimf)) {
1119 err (1, "fclose");
1120 }
1121 }
1122 }
1123
1124 static void layout (void)
1125 {
1126 int pindex;
1127 fz_rect box;
1128 fz_matrix ctm, rm;
1129 struct pagedim *p = p;
1130 double zw, w, maxw = 0.0, zoom = zoom;
1131
1132 if (state.pagedimcount == 0) return;
1133
1134 switch (state.fitmodel) {
1135 case FitProportional:
1136 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1137 double x0, x1;
1138
1139 p = &state.pagedims[pindex];
1140 fz_rotate (&rm, p->rotate + state.rotate);
1141 box = p->mediabox;
1142 fz_transform_rect (&box, &rm);
1143
1144 x0 = MIN (box.x0, box.x1);
1145 x1 = MAX (box.x0, box.x1);
1146
1147 w = x1 - x0;
1148 maxw = MAX (w, maxw);
1149 zoom = state.w / maxw;
1150 }
1151 break;
1152
1153 case FitPage:
1154 maxw = state.w;
1155 break;
1156
1157 case FitWidth:
1158 break;
1159
1160 default:
1161 ARSERT (0 && state.fitmodel);
1162 }
1163
1164 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1165 fz_rect rect;
1166 fz_matrix tm, sm;
1167
1168 p = &state.pagedims[pindex];
1169 fz_rotate (&ctm, state.rotate);
1170 fz_rotate (&rm, p->rotate + state.rotate);
1171 box = p->mediabox;
1172 fz_transform_rect (&box, &rm);
1173 w = box.x1 - box.x0;
1174 switch (state.fitmodel) {
1175 case FitProportional:
1176 p->left = ((maxw - w) * zoom) / 2.0;
1177 break;
1178 case FitPage:
1179 {
1180 double zh, h;
1181 zw = maxw / w;
1182 h = box.y1 - box.y0;
1183 zh = state.h / h;
1184 zoom = MIN (zw, zh);
1185 p->left = (maxw - (w * zoom)) / 2.0;
1186 }
1187 break;
1188 case FitWidth:
1189 p->left = 0;
1190 zoom = state.w / w;
1191 break;
1192 }
1193
1194 fz_scale (&p->zoomctm, zoom, zoom);
1195 fz_concat (&ctm, &p->zoomctm, &ctm);
1196
1197 fz_rotate (&rm, p->rotate);
1198 p->pagebox = p->mediabox;
1199 fz_transform_rect (&p->pagebox, &rm);
1200 p->pagebox.x1 -= p->pagebox.x0;
1201 p->pagebox.y1 -= p->pagebox.y0;
1202 p->pagebox.x0 = 0;
1203 p->pagebox.y0 = 0;
1204 rect = p->pagebox;
1205 fz_transform_rect (&rect, &ctm);
1206 fz_round_rect (&p->bounds, &rect);
1207 p->ctm = ctm;
1208
1209 fz_translate (&tm, 0, -p->mediabox.y1);
1210 fz_scale (&sm, zoom, -zoom);
1211 fz_concat (&ctm, &tm, &sm);
1212 fz_concat (&p->lctm, &ctm, &rm);
1213
1214 p->tctmready = 0;
1215 }
1216
1217 do {
1218 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1219 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1220 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1221 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1222 int w = x1 - x0;
1223 int h = y1 - y0;
1224
1225 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1226 } while (p-- != state.pagedims);
1227 }
1228
1229 static
1230 struct anchor { int n; int x; int y; int w; int h; }
1231 desttoanchor (fz_link_dest *dest)
1232 {
1233 int i;
1234 struct anchor a;
1235 struct pagedim *pdim = state.pagedims;
1236
1237 a.n = -1;
1238 a.x = 0;
1239 a.y = 0;
1240 for (i = 0; i < state.pagedimcount; ++i) {
1241 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1242 break;
1243 pdim = &state.pagedims[i];
1244 }
1245 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1246 fz_point p;
1247 if (dest->ld.gotor.flags & fz_link_flag_l_valid)
1248 p.x = dest->ld.gotor.lt.x;
1249 else
1250 p.x = 0.0;
1251 p.y = dest->ld.gotor.lt.y;
1252 fz_transform_point (&p, &pdim->lctm);
1253 a.y = p.y;
1254 a.x = p.x;
1255 }
1256 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1257 double x0, x1, y0, y1;
1258
1259 x0 = MIN (pdim->bounds.x0, pdim->bounds.x1);
1260 x1 = MAX (pdim->bounds.x0, pdim->bounds.x1);
1261 a.w = x1 - x0;
1262 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1263 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1264 a.h = y1 - y0;
1265 a.n = dest->ld.gotor.page;
1266 }
1267 return a;
1268 }
1269
1270 static void recurse_outline (fz_outline *outline, int level)
1271 {
1272 while (outline) {
1273 if (outline->dest.kind == FZ_LINK_GOTO) {
1274 struct anchor a = desttoanchor (&outline->dest);
1275
1276 if (a.n >= 0) {
1277 printd ("o %d %d %d %d %s",
1278 level, a.n, a.y, a.h, outline->title);
1279 }
1280 }
1281 else {
1282 printd ("emsg Unhandled outline kind %d for %s\n",
1283 outline->dest.kind, outline->title);
1284 }
1285 if (outline->down) {
1286 recurse_outline (outline->down, level + 1);
1287 }
1288 outline = outline->next;
1289 }
1290 }
1291
1292 static void process_outline (void)
1293 {
1294 fz_outline *outline;
1295
1296 if (!state.needoutline) return;
1297
1298 state.needoutline = 0;
1299 switch (state.type) {
1300 case DPDF:
1301 outline = pdf_load_outline (state.u.pdf);
1302 break;
1303 case DXPS:
1304 outline = xps_load_outline (state.u.xps);
1305 break;
1306 default:
1307 outline = NULL;
1308 break;
1309 }
1310 if (outline) {
1311 recurse_outline (outline, 0);
1312 fz_free_outline (state.ctx, outline);
1313 }
1314 }
1315
1316 static char *strofspan (fz_text_span *span)
1317 {
1318 char *p;
1319 char utf8[10];
1320 fz_text_char *ch;
1321 size_t size = 0, cap = 80;
1322
1323 p = malloc (cap + 1);
1324 if (!p) return NULL;
1325
1326 for (ch = span->text; ch < span->text + span->len; ++ch) {
1327 int n = fz_runetochar (utf8, ch->c);
1328 if (size + n > cap) {
1329 cap *= 2;
1330 p = realloc (p, cap + 1);
1331 if (!p) return NULL;
1332 }
1333
1334 memcpy (p + size, utf8, n);
1335 size += n;
1336 }
1337 p[size] = 0;
1338 return p;
1339 }
1340
1341 static int matchspan (regex_t *re, fz_text_page *page,
1342 fz_text_span *span, fz_matrix ctm,
1343 int stop, int pageno, double start)
1344 {
1345 int ret;
1346 char *p;
1347 regmatch_t rm;
1348 int a, b, c;
1349 fz_rect sb, eb;
1350 fz_point p1, p2, p3, p4;
1351
1352 p = strofspan (span);
1353 if (!p) return -1;
1354
1355 ret = regexec (re, p, 1, &rm, 0);
1356 if (ret) {
1357 free (p);
1358 if (ret != REG_NOMATCH) {
1359 size_t size;
1360 char errbuf[80];
1361 size = regerror (ret, re, errbuf, sizeof (errbuf));
1362 printd ("msg regexec error `%.*s'",
1363 (int) size, errbuf);
1364 return -1;
1365 }
1366 return 0;
1367 }
1368 else {
1369 int l = span->len;
1370
1371 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1372 c += fz_runelen (span->text[a].c);
1373 }
1374 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1375 c += fz_runelen (span->text[b].c);
1376 }
1377
1378 if (fz_runelen (span->text[b].c) > 1) {
1379 b = MAX (0, b-1);
1380 }
1381
1382 fz_text_char_bbox (&sb, span, a);
1383 fz_text_char_bbox (&eb, span, b);
1384
1385 p1.x = sb.x0;
1386 p1.y = sb.y0;
1387 p2.x = eb.x1;
1388 p2.y = sb.y0;
1389 p3.x = eb.x1;
1390 p3.y = eb.y1;
1391 p4.x = sb.x0;
1392 p4.y = eb.y1;
1393
1394 if (!stop) {
1395 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1396 pageno, 1,
1397 p1.x, p1.y,
1398 p2.x, p2.y,
1399 p3.x, p3.y,
1400 p4.x, p4.y);
1401
1402 printd ("progress 1 found at %d `%.*s' in %f sec",
1403 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1404 now () - start);
1405 }
1406 else {
1407 printd ("match %d %d %f %f %f %f %f %f %f %f",
1408 pageno, 2,
1409 p1.x, p1.y,
1410 p2.x, p2.y,
1411 p3.x, p3.y,
1412 p4.x, p4.y);
1413 }
1414 free (p);
1415 return 1;
1416 }
1417 }
1418
1419 static int compareblocks (const void *l, const void *r)
1420 {
1421 fz_text_block const *ls = l;
1422 fz_text_block const* rs = r;
1423 return ls->bbox.y0 - rs->bbox.y0;
1424 }
1425
1426 /* wishful thinking function */
1427 static void search (regex_t *re, int pageno, int y, int forward)
1428 {
1429 int i, j;
1430 fz_matrix ctm;
1431 fz_device *tdev;
1432 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1433 fz_text_page *text;
1434 fz_text_sheet *sheet;
1435 struct pagedim *pdim, *pdimprev;
1436 int stop = 0, niters = 0;
1437 double start, end;
1438
1439 if (!(state.type == DPDF || state.type == DXPS))
1440 return;
1441
1442 start = now ();
1443 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1444 if (niters++ == 5) {
1445 niters = 0;
1446 if (hasdata ()) {
1447 printd ("progress 1 attention requested aborting search at %d",
1448 pageno);
1449 stop = 1;
1450 }
1451 else {
1452 printd ("progress %f searching in page %d",
1453 (double) (pageno + 1) / state.pagecount,
1454 pageno);
1455 }
1456 }
1457 pdimprev = NULL;
1458 for (i = 0; i < state.pagedimcount; ++i) {
1459 pdim = &state.pagedims[i];
1460 if (pdim->pageno == pageno) {
1461 goto found;
1462 }
1463 if (pdim->pageno > pageno) {
1464 pdim = pdimprev;
1465 goto found;
1466 }
1467 pdimprev = pdim;
1468 }
1469 pdim = pdimprev;
1470 found:
1471
1472 sheet = fz_new_text_sheet (state.ctx);
1473 text = fz_new_text_page (state.ctx, &fz_infinite_rect);
1474 tdev = fz_new_text_device (state.ctx, sheet, text);
1475
1476 switch (state.type) {
1477 case DPDF:
1478 u.ptr = NULL;
1479 fz_try (state.ctx) {
1480 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1481 trimctm (u.pdfpage, pdim - state.pagedims);
1482 fz_concat (&ctm, &pdim->tctm, &pdim->zoomctm);
1483 pdf_run_page (state.u.pdf, u.pdfpage, tdev, &ctm, NULL);
1484 }
1485 fz_catch (state.ctx) {
1486 fz_free_device (tdev);
1487 u.ptr = NULL;
1488 goto nextiter;
1489 }
1490 break;
1491
1492 case DXPS:
1493 u.xpspage = xps_load_page (state.u.xps, pageno);
1494 xps_run_page (state.u.xps, u.xpspage, tdev, &pdim->ctm, NULL);
1495 break;
1496
1497 default:
1498 ARSERT (0 && state.type);
1499 }
1500
1501 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1502 fz_free_device (tdev);
1503
1504 for (j = 0; j < text->len; ++j) {
1505 int k;
1506 fz_page_block *pb;
1507 fz_text_block *block;
1508
1509 pb = &text->blocks[forward ? j : text->len - 1 - j];
1510 if (pb->type != FZ_PAGE_BLOCK_TEXT) continue;
1511 block = pb->u.text;
1512
1513 for (k = 0; k < block->len; ++k) {
1514 fz_text_line *line;
1515 fz_text_span *span;
1516
1517 if (forward) {
1518 line = &block->lines[k];
1519 if (line->bbox.y0 < y + 1) continue;
1520 }
1521 else {
1522 line = &block->lines[block->len - 1 - k];
1523 if (line->bbox.y0 > y - 1) continue;
1524 }
1525
1526 for (span = line->first_span; span; span = span->next) {
1527 switch (matchspan (re, text, span, ctm,
1528 stop, pageno, start)) {
1529 case 0: break;
1530 case 1: stop = 1; break;
1531 case -1: stop = 1; goto endloop;
1532 }
1533 }
1534 }
1535 }
1536 nextiter:
1537 if (forward) {
1538 pageno += 1;
1539 y = 0;
1540 }
1541 else {
1542 pageno -= 1;
1543 y = INT_MAX;
1544 }
1545 endloop:
1546 fz_free_text_page (state.ctx, text);
1547 fz_free_text_sheet (state.ctx, sheet);
1548 if (u.ptr) {
1549 state.freepage (u.ptr);
1550 }
1551 }
1552 end = now ();
1553 if (!stop) {
1554 printd ("progress 1 no matches %f sec", end - start);
1555 }
1556 printd ("clearrects");
1557 }
1558
1559 static void set_tex_params (int colorspace)
1560 {
1561 union {
1562 unsigned char b;
1563 unsigned int s;
1564 } endianness = {1};
1565
1566 switch (colorspace) {
1567 case 0:
1568 state.texiform = GL_RGBA8;
1569 state.texform = GL_RGBA;
1570 state.texty = GL_UNSIGNED_BYTE;
1571 state.colorspace = fz_device_rgb (state.ctx);
1572 break;
1573 case 1:
1574 state.texiform = GL_RGBA8;
1575 state.texform = GL_BGRA;
1576 state.texty = endianness.s > 1
1577 ? GL_UNSIGNED_INT_8_8_8_8
1578 : GL_UNSIGNED_INT_8_8_8_8_REV;
1579 state.colorspace = fz_device_bgr (state.ctx);
1580 break;
1581 case 2:
1582 state.texiform = GL_LUMINANCE_ALPHA;
1583 state.texform = GL_LUMINANCE_ALPHA;
1584 state.texty = GL_UNSIGNED_BYTE;
1585 state.colorspace = fz_device_gray (state.ctx);
1586 break;
1587 default:
1588 errx (1, "invalid colorspce %d", colorspace);
1589 }
1590 }
1591
1592 static void realloctexts (int texcount)
1593 {
1594 size_t size;
1595
1596 if (texcount == state.texcount) return;
1597
1598 if (texcount < state.texcount) {
1599 glDeleteTextures (state.texcount - texcount,
1600 state.texids + texcount);
1601 }
1602
1603 size = texcount * sizeof (*state.texids);
1604 state.texids = realloc (state.texids, size);
1605 if (!state.texids) {
1606 err (1, "realloc texids %" FMT_s, size);
1607 }
1608
1609 size = texcount * sizeof (*state.texowners);
1610 state.texowners = realloc (state.texowners, size);
1611 if (!state.texowners) {
1612 err (1, "realloc texowners %" FMT_s, size);
1613 }
1614 if (texcount > state.texcount) {
1615 int i;
1616
1617 glGenTextures (texcount - state.texcount,
1618 state.texids + state.texcount);
1619 for (i = state.texcount; i < texcount; ++i) {
1620 state.texowners[i].w = -1;
1621 state.texowners[i].slice = NULL;
1622 }
1623 }
1624 state.texcount = texcount;
1625 state.texindex = 0;
1626 }
1627
1628 static char *mbtoutf8 (char *s)
1629 {
1630 char *p, *r;
1631 wchar_t *tmp;
1632 size_t i, ret, len;
1633
1634 len = mbstowcs (NULL, s, strlen (s));
1635 if (len == 0) {
1636 return s;
1637 }
1638 else {
1639 if (len == (size_t) -1) {
1640 return s;
1641 }
1642 }
1643
1644 tmp = malloc (len * sizeof (wchar_t));
1645 if (!tmp) {
1646 return s;
1647 }
1648
1649 ret = mbstowcs (tmp, s, len);
1650 if (ret == (size_t) -1) {
1651 free (tmp);
1652 return s;
1653 }
1654
1655 len = 0;
1656 for (i = 0; i < ret; ++i) {
1657 len += fz_runelen (tmp[i]);
1658 }
1659
1660 p = r = malloc (len + 1);
1661 if (!r) {
1662 free (tmp);
1663 return s;
1664 }
1665
1666 for (i = 0; i < ret; ++i) {
1667 p += fz_runetochar (p, tmp[i]);
1668 }
1669 *p = 0;
1670 free (tmp);
1671 return r;
1672 }
1673
1674 CAMLprim value ml_mbtoutf8 (value s_v)
1675 {
1676 CAMLparam1 (s_v);
1677 CAMLlocal1 (ret_v);
1678 char *s, *r;
1679
1680 s = String_val (s_v);
1681 r = mbtoutf8 (s);
1682 if (r == s) {
1683 ret_v = s_v;
1684 }
1685 else {
1686 ret_v = caml_copy_string (r);
1687 free (r);
1688 }
1689 CAMLreturn (ret_v);
1690 }
1691
1692 static void * mainloop (void *unused)
1693 {
1694 char *p = NULL;
1695 int len, ret, oldlen = 0;
1696
1697 for (;;) {
1698 len = readlen ();
1699 if (len == 0) {
1700 errx (1, "readlen returned 0");
1701 }
1702
1703 if (oldlen < len + 1) {
1704 p = realloc (p, len + 1);
1705 if (!p) {
1706 err (1, "realloc %d failed", len + 1);
1707 }
1708 oldlen = len + 1;
1709 }
1710 readdata (p, len);
1711 p[len] = 0;
1712
1713 if (!strncmp ("open", p, 4)) {
1714 int wthack, off;
1715 char *password;
1716 char *filename;
1717 char *utf8filename;
1718 size_t filenamelen;
1719
1720 ret = sscanf (p + 5, " %d %d %n", &wthack, &state.cxack, &off);
1721 if (ret != 2) {
1722 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1723 }
1724
1725 filename = p + 5 + off;
1726 filenamelen = strlen (filename);
1727 password = filename + filenamelen + 1;
1728
1729 lock ("open");
1730 openxref (filename, password);
1731 pdfinfo ();
1732 initpdims ();
1733 unlock ("open");
1734
1735 if (!wthack) {
1736 utf8filename = mbtoutf8 (filename);
1737 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1738 if (utf8filename != filename) {
1739 free (utf8filename);
1740 }
1741 }
1742 state.needoutline = 1;
1743 }
1744 else if (!strncmp ("cs", p, 2)) {
1745 int i, colorspace;
1746
1747 ret = sscanf (p + 2, " %d", &colorspace);
1748 if (ret != 1) {
1749 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1750 }
1751 lock ("cs");
1752 set_tex_params (colorspace);
1753 for (i = 0; i < state.texcount; ++i) {
1754 state.texowners[i].w = -1;
1755 state.texowners[i].slice = NULL;
1756 }
1757 unlock ("cs");
1758 }
1759 else if (!strncmp ("freepage", p, 8)) {
1760 void *ptr;
1761
1762 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1763 if (ret != 1) {
1764 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1765 }
1766 freepage (ptr);
1767 }
1768 else if (!strncmp ("freetile", p, 8)) {
1769 void *ptr;
1770
1771 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1772 if (ret != 1) {
1773 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1774 }
1775 freetile (ptr);
1776 }
1777 else if (!strncmp ("search", p, 6)) {
1778 int icase, pageno, y, ret, len2, forward;
1779 char *pattern;
1780 regex_t re;
1781
1782 ret = sscanf (p + 6, " %d %d %d %d,%n",
1783 &icase, &pageno, &y, &forward, &len2);
1784 if (ret != 4) {
1785 errx (1, "malformed search `%s' ret=%d", p, ret);
1786 }
1787
1788 pattern = p + 6 + len2;
1789 ret = regcomp (&re, pattern,
1790 REG_EXTENDED | (icase ? REG_ICASE : 0));
1791 if (ret) {
1792 char errbuf[80];
1793 size_t size;
1794
1795 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1796 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1797 }
1798 else {
1799 search (&re, pageno, y, forward);
1800 regfree (&re);
1801 }
1802 }
1803 else if (!strncmp ("geometry", p, 8)) {
1804 int w, h, fitmodel;
1805
1806 printd ("clear");
1807 ret = sscanf (p + 8, " %d %d %d", &w, &h, &fitmodel);
1808 if (ret != 3) {
1809 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1810 }
1811
1812 lock ("geometry");
1813 state.h = h;
1814 if (w != state.w) {
1815 int i;
1816 state.w = w;
1817 for (i = 0; i < state.texcount; ++i) {
1818 state.texowners[i].slice = NULL;
1819 }
1820 }
1821 state.fitmodel = fitmodel;
1822 layout ();
1823 process_outline ();
1824
1825 state.gen++;
1826 unlock ("geometry");
1827 printd ("continue %d", state.pagecount);
1828 }
1829 else if (!strncmp ("reqlayout", p, 9)) {
1830 char *nameddest;
1831 int rotate, fitmodel, off, h;
1832
1833 printd ("clear");
1834 ret = sscanf (p + 9, " %d %d %d %n",
1835 &rotate, &fitmodel, &h, &off);
1836 if (ret != 3) {
1837 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1838 }
1839 lock ("reqlayout");
1840 if (state.rotate != rotate || state.fitmodel != fitmodel) {
1841 state.gen += 1;
1842 }
1843 state.rotate = rotate;
1844 state.fitmodel = fitmodel;
1845 state.h = h;
1846 layout ();
1847 process_outline ();
1848
1849 nameddest = p + 9 + off;
1850 if (state.type == DPDF && nameddest && *nameddest) {
1851 struct anchor a;
1852 fz_link_dest dest;
1853 pdf_obj *needle, *obj;
1854
1855 needle = pdf_new_string (state.ctx, nameddest,
1856 strlen (nameddest));
1857 obj = pdf_lookup_dest (state.u.pdf, needle);
1858 if (obj) {
1859 dest = pdf_parse_link_dest (state.u.pdf, obj);
1860
1861 a = desttoanchor (&dest);
1862 if (a.n >= 0) {
1863 printd ("a %d %d %d", a.n, a.x, a.y);
1864 }
1865 else {
1866 printd ("emsg failed to parse destination `%s'\n",
1867 nameddest);
1868 }
1869 }
1870 else {
1871 printd ("emsg destination `%s' not found\n",
1872 nameddest);
1873 }
1874 pdf_drop_obj (needle);
1875 }
1876
1877 state.gen++;
1878 unlock ("reqlayout");
1879 printd ("continue %d", state.pagecount);
1880 }
1881 else if (!strncmp ("page", p, 4)) {
1882 double a, b;
1883 struct page *page;
1884 int pageno, pindex, ret;
1885
1886 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1887 if (ret != 2) {
1888 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1889 }
1890
1891 lock ("page");
1892 a = now ();
1893 page = loadpage (pageno, pindex);
1894 b = now ();
1895 unlock ("page");
1896
1897 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1898 }
1899 else if (!strncmp ("tile", p, 4)) {
1900 int x, y, w, h, ret;
1901 struct page *page;
1902 struct tile *tile;
1903 double a, b;
1904 void *data;
1905
1906 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1907 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1908 if (ret != 6) {
1909 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1910 }
1911
1912 lock ("tile");
1913 a = now ();
1914 tile = rendertile (page, x, y, w, h, data);
1915 b = now ();
1916 unlock ("tile");
1917
1918 printd ("tile %d %d %" FMT_ptr " %u %f",
1919 x, y,
1920 FMT_ptr_cast2 (tile),
1921 tile->w * tile->h * tile->pixmap->n,
1922 b - a);
1923 }
1924 else if (!strncmp ("settrim", p, 7)) {
1925 fz_irect fuzz;
1926 int trimmargins;
1927
1928 ret = sscanf (p + 7, " %d %d %d %d %d",
1929 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1930 if (ret != 5) {
1931 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1932 }
1933 printd ("clear");
1934 lock ("settrim");
1935 state.trimmargins = trimmargins;
1936 state.needoutline = 1;
1937 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1938 state.trimanew = 1;
1939 state.trimfuzz = fuzz;
1940 }
1941 state.pagedimcount = 0;
1942 free (state.pagedims);
1943 state.pagedims = NULL;
1944 initpdims ();
1945 layout ();
1946 process_outline ();
1947 unlock ("settrim");
1948 printd ("continue %d", state.pagecount);
1949 }
1950 else if (!strncmp ("sliceh", p, 6)) {
1951 int h;
1952
1953 ret = sscanf (p + 6, " %d", &h);
1954 if (ret != 1) {
1955 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1956 }
1957 if (h != state.sliceheight) {
1958 int i;
1959
1960 state.sliceheight = h;
1961 for (i = 0; i < state.texcount; ++i) {
1962 state.texowners[i].w = -1;
1963 state.texowners[i].h = -1;
1964 state.texowners[i].slice = NULL;
1965 }
1966 }
1967 }
1968 else if (!strncmp ("interrupt", p, 9)) {
1969 printd ("vmsg interrupted");
1970 }
1971 else {
1972 errx (1, "unknown command %.*s", len, p);
1973 }
1974 }
1975 return 0;
1976 }
1977
1978 CAMLprim value ml_realloctexts (value texcount_v)
1979 {
1980 CAMLparam1 (texcount_v);
1981 int ok;
1982
1983 if (trylock ("ml_realloctexts")) {
1984 ok = 0;
1985 goto done;
1986 }
1987 realloctexts (Int_val (texcount_v));
1988 ok = 1;
1989 unlock ("ml_realloctexts");
1990
1991 done:
1992 CAMLreturn (Val_bool (ok));
1993 }
1994
1995 static void showsel (struct page *page, int ox, int oy)
1996 {
1997 int seen = 0;
1998 fz_irect bbox;
1999 fz_rect rect;
2000 fz_text_line *line;
2001 fz_page_block *pageb;
2002 fz_text_block *block;
2003 struct mark first, last;
2004
2005 first = page->fmark;
2006 last = page->lmark;
2007
2008 if (!first.span || !last.span) return;
2009
2010 glEnable (GL_BLEND);
2011 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
2012 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
2013
2014 ox += state.pagedims[page->pdimno].bounds.x0;
2015 oy += state.pagedims[page->pdimno].bounds.y0;
2016 for (pageb = page->text->blocks;
2017 pageb < page->text->blocks + page->text->len;
2018 ++pageb) {
2019 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2020 block = pageb->u.text;
2021
2022 for (line = block->lines;
2023 line < block->lines + block->len;
2024 ++line) {
2025 fz_text_span *span;
2026 rect = fz_empty_rect;
2027
2028 for (span = line->first_span; span; span = span->next) {
2029 int i, j, k;
2030 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
2031
2032 j = 0;
2033 k = span->len - 1;
2034
2035 if (span == page->fmark.span && span == page->lmark.span) {
2036 seen = 1;
2037 j = MIN (first.i, last.i);
2038 k = MAX (first.i, last.i);
2039 }
2040 else if (span == first.span) {
2041 seen = 1;
2042 j = first.i;
2043 }
2044 else if (span == last.span) {
2045 seen = 1;
2046 k = last.i;
2047 }
2048
2049 if (seen) {
2050 for (i = j; i <= k; ++i) {
2051 fz_rect bbox;
2052 fz_union_rect (&rect,
2053 fz_text_char_bbox (&bbox, span, i));
2054 }
2055 fz_round_rect (&bbox, &rect);
2056 lprintf ("%d %d %d %d oy=%d ox=%d\n",
2057 bbox.x0,
2058 bbox.y0,
2059 bbox.x1,
2060 bbox.y1,
2061 oy, ox);
2062
2063 glRecti (bbox.x0 + ox, bbox.y0 + oy,
2064 bbox.x1 + ox, bbox.y1 + oy);
2065 if (span == last.span) {
2066 goto done;
2067 }
2068 }
2069 }
2070 }
2071 }
2072 done:
2073 glDisable (GL_BLEND);
2074 }
2075
2076 #include "glfont.c"
2077
2078 static void highlightlinks (struct page *page, int xoff, int yoff)
2079 {
2080 fz_matrix ctm, tm, pm;
2081 fz_link *link, *links;
2082
2083 switch (page->type) {
2084 case DPDF:
2085 links = page->u.pdfpage->links;
2086 break;
2087
2088 case DXPS:
2089 links = page->u.xpspage->links;
2090 break;
2091
2092 default:
2093 return;
2094 }
2095
2096 glEnable (GL_TEXTURE_1D);
2097 glEnable (GL_BLEND);
2098 glBindTexture (GL_TEXTURE_1D, state.stid);
2099
2100 xoff -= state.pagedims[page->pdimno].bounds.x0;
2101 yoff -= state.pagedims[page->pdimno].bounds.y0;
2102 fz_translate (&tm, xoff, yoff);
2103 pm = pagectm (page);
2104 fz_concat (&ctm, &pm, &tm);
2105
2106 glBegin (GL_LINES);
2107 for (link = links; link; link = link->next) {
2108 fz_point p1, p2, p3, p4;
2109
2110 p1.x = link->rect.x0;
2111 p1.y = link->rect.y0;
2112
2113 p2.x = link->rect.x1;
2114 p2.y = link->rect.y0;
2115
2116 p3.x = link->rect.x1;
2117 p3.y = link->rect.y1;
2118
2119 p4.x = link->rect.x0;
2120 p4.y = link->rect.y1;
2121
2122 fz_transform_point (&p1, &ctm);
2123 fz_transform_point (&p2, &ctm);
2124 fz_transform_point (&p3, &ctm);
2125 fz_transform_point (&p4, &ctm);
2126
2127 switch (link->dest.kind) {
2128 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2129 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2130 case FZ_LINK_LAUNCH: glColor3ub (0, 255, 0); break;
2131 default: glColor3ub (0, 0, 0); break;
2132 }
2133
2134 {
2135 float w, h, s, t;
2136
2137 w = p2.x - p1.x;
2138 h = p2.y - p1.y;
2139 t = sqrtf (w*w + h*h) * .25f;
2140
2141 w = p3.x - p2.x;
2142 h = p3.y - p2.y;
2143 s = sqrtf (w*w + h*h) * .25f;
2144
2145 glTexCoord1i (0);
2146 glVertex2f (p1.x, p1.y);
2147 glTexCoord1f (t);
2148 glVertex2f (p2.x, p2.y);
2149
2150 glTexCoord1i (0);
2151 glVertex2f (p2.x, p2.y);
2152 glTexCoord1f (s);
2153 glVertex2f (p3.x, p3.y);
2154
2155 glTexCoord1i (0);
2156 glVertex2f (p3.x, p3.y);
2157 glTexCoord1f (t);
2158 glVertex2f (p4.x, p4.y);
2159
2160 glTexCoord1i (0);
2161 glVertex2f (p4.x, p4.y);
2162 glTexCoord1f (s);
2163 glVertex2f (p1.x, p1.y);
2164 }
2165 }
2166 glEnd ();
2167
2168 glDisable (GL_BLEND);
2169 glDisable (GL_TEXTURE_1D);
2170 }
2171
2172 static int compareslinks (const void *l, const void *r)
2173 {
2174 struct slink const *ls = l;
2175 struct slink const *rs = r;
2176 if (ls->bbox.y0 == rs->bbox.y0) {
2177 return rs->bbox.x0 - rs->bbox.x0;
2178 }
2179 return ls->bbox.y0 - rs->bbox.y0;
2180 }
2181
2182 static void droptext (struct page *page)
2183 {
2184 if (page->text) {
2185 fz_free_text_page (state.ctx, page->text);
2186 page->fmark.i = -1;
2187 page->lmark.i = -1;
2188 page->fmark.span = NULL;
2189 page->lmark.span = NULL;
2190 page->text = NULL;
2191 }
2192 if (page->sheet) {
2193 fz_free_text_sheet (state.ctx, page->sheet);
2194 page->sheet = NULL;
2195 }
2196 }
2197
2198 static void dropslinks (struct page *page)
2199 {
2200 if (page->slinks) {
2201 free (page->slinks);
2202 page->slinks = NULL;
2203 page->slinkcount = 0;
2204 }
2205 }
2206
2207 static void ensureslinks (struct page *page)
2208 {
2209 fz_matrix ctm;
2210 int i, count = 0;
2211 size_t slinksize = sizeof (*page->slinks);
2212 fz_link *link, *links;
2213
2214 if (state.gen != page->sgen) {
2215 dropslinks (page);
2216 page->sgen = state.gen;
2217 }
2218 if (page->slinks) return;
2219
2220 switch (page->type) {
2221 case DPDF:
2222 links = page->u.pdfpage->links;
2223 trimctm (page->u.pdfpage, page->pdimno);
2224 fz_concat (&ctm,
2225 &state.pagedims[page->pdimno].tctm,
2226 &state.pagedims[page->pdimno].ctm);
2227 break;
2228
2229 case DXPS:
2230 links = page->u.xpspage->links;
2231 ctm = state.pagedims[page->pdimno].ctm;
2232 break;
2233
2234 default:
2235 return;
2236 }
2237
2238 for (link = links; link; link = link->next) {
2239 count++;
2240 }
2241 if (count > 0) {
2242 page->slinkcount = count;
2243 page->slinks = calloc (count, slinksize);
2244 if (!page->slinks) {
2245 err (1, "realloc slinks %d", count);
2246 }
2247
2248 for (i = 0, link = links; link; ++i, link = link->next) {
2249 fz_rect rect;
2250
2251 rect = link->rect;
2252 fz_transform_rect (&rect, &ctm);
2253 page->slinks[i].link = link;
2254 fz_round_rect (&page->slinks[i].bbox, &rect);
2255 }
2256 qsort (page->slinks, count, slinksize, compareslinks);
2257 }
2258 }
2259
2260 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2261 static void fmt_linkn (char *s, unsigned int u)
2262 {
2263 unsigned int len; unsigned int q;
2264 int zma = 'z' - 'a' + 1;
2265 len = 1; q = u;
2266 while (q > zma - 1) { ++len; q /= zma; }
2267 if (s) {
2268 s += len;
2269 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2270 /* handles u == 0 */
2271 }
2272 s[len] = 0;
2273 }
2274
2275 static void highlightslinks (struct page *page, int xoff, int yoff,
2276 int noff, char *targ, int tlen, int hfsize)
2277 {
2278 int i;
2279 char buf[40];
2280 struct slink *slink;
2281 double x0, y0, x1, y1, w;
2282
2283 ensureslinks (page);
2284 glColor3ub (0xc3, 0xb0, 0x91);
2285 for (i = 0; i < page->slinkcount; ++i) {
2286 fmt_linkn (buf, i + noff);
2287 if (!tlen || !strncmp (targ, buf, tlen)) {
2288 slink = &page->slinks[i];
2289
2290 x0 = slink->bbox.x0 + xoff - 5;
2291 y1 = slink->bbox.y0 + yoff - 5;
2292 y0 = y1 + 10 + hfsize;
2293 w = measure_string (state.face, hfsize, buf);
2294 x1 = x0 + w + 10;
2295 glRectd (x0, y0, x1, y1);
2296 }
2297 }
2298
2299 glEnable (GL_BLEND);
2300 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2301 glEnable (GL_TEXTURE_2D);
2302 glColor3ub (0, 0, 0);
2303 for (i = 0; i < page->slinkcount; ++i) {
2304 fmt_linkn (buf, i + noff);
2305 if (!tlen || !strncmp (targ, buf, tlen)) {
2306 slink = &page->slinks[i];
2307
2308 x0 = slink->bbox.x0 + xoff;
2309 y0 = slink->bbox.y0 + yoff + hfsize;
2310 draw_string (state.face, hfsize, x0, y0, buf);
2311 }
2312 }
2313 glDisable (GL_TEXTURE_2D);
2314 glDisable (GL_BLEND);
2315 }
2316
2317
2318 static void uploadslice (struct tile *tile, struct slice *slice)
2319 {
2320 int offset;
2321 struct slice *slice1;
2322 unsigned char *texdata;
2323
2324 offset = 0;
2325 for (slice1 = tile->slices; slice != slice1; slice1++) {
2326 offset += slice1->h * tile->w * tile->pixmap->n;
2327 }
2328 if (slice->texindex != -1 && slice->texindex < state.texcount
2329 && state.texowners[slice->texindex].slice == slice) {
2330 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2331 }
2332 else {
2333 int subimage = 0;
2334 int texindex = state.texindex++ % state.texcount;
2335
2336 if (state.texowners[texindex].w == tile->w) {
2337 if (state.texowners[texindex].h >= slice->h) {
2338 subimage = 1;
2339 }
2340 else {
2341 state.texowners[texindex].h = slice->h;
2342 }
2343 }
2344 else {
2345 state.texowners[texindex].h = slice->h;
2346 }
2347
2348 state.texowners[texindex].w = tile->w;
2349 state.texowners[texindex].slice = slice;
2350 slice->texindex = texindex;
2351
2352 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2353 if (tile->pbo) {
2354 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2355 texdata = 0;
2356 }
2357 else {
2358 texdata = tile->pixmap->samples;
2359 }
2360 if (subimage) {
2361 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2362 0,
2363 0,
2364 0,
2365 tile->w,
2366 slice->h,
2367 state.texform,
2368 state.texty,
2369 texdata+offset
2370 );
2371 }
2372 else {
2373 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2374 0,
2375 state.texiform,
2376 tile->w,
2377 slice->h,
2378 0,
2379 state.texform,
2380 state.texty,
2381 texdata+offset
2382 );
2383 }
2384 if (tile->pbo) {
2385 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2386 }
2387 }
2388 }
2389
2390 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2391 {
2392 CAMLparam2 (args_v, ptr_v);
2393 int dispx = Int_val (Field (args_v, 0));
2394 int dispy = Int_val (Field (args_v, 1));
2395 int dispw = Int_val (Field (args_v, 2));
2396 int disph = Int_val (Field (args_v, 3));
2397 int tilex = Int_val (Field (args_v, 4));
2398 int tiley = Int_val (Field (args_v, 5));
2399 char *s = String_val (ptr_v);
2400 struct tile *tile = parse_pointer ("ml_drawtile", s);
2401
2402 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2403 {
2404 int slicey, firstslice;
2405 struct slice *slice;
2406
2407 firstslice = tiley / tile->sliceheight;
2408 slice = &tile->slices[firstslice];
2409 slicey = tiley % tile->sliceheight;
2410
2411 while (disph > 0) {
2412 int dh;
2413
2414 dh = slice->h - slicey;
2415 dh = MIN (disph, dh);
2416 uploadslice (tile, slice);
2417
2418 glBegin (GL_QUADS);
2419 {
2420 glTexCoord2i (tilex, slicey);
2421 glVertex2i (dispx, dispy);
2422
2423 glTexCoord2i (tilex+dispw, slicey);
2424 glVertex2i (dispx+dispw, dispy);
2425
2426 glTexCoord2i (tilex+dispw, slicey+dh);
2427 glVertex2i (dispx+dispw, dispy+dh);
2428
2429 glTexCoord2i (tilex, slicey+dh);
2430 glVertex2i (dispx, dispy+dh);
2431 }
2432 glEnd ();
2433
2434 dispy += dh;
2435 disph -= dh;
2436 slice++;
2437 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2438 slicey = 0;
2439 }
2440 }
2441 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2442 CAMLreturn (Val_unit);
2443 }
2444
2445 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2446 value xoff_v, value yoff_v,
2447 value li_v)
2448 {
2449 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2450 int xoff = Int_val (xoff_v);
2451 int yoff = Int_val (yoff_v);
2452 int noff = Int_val (Field (li_v, 0));
2453 char *targ = String_val (Field (li_v, 1));
2454 int tlen = caml_string_length (Field (li_v, 1));
2455 int hfsize = Int_val (Field (li_v, 2));
2456 char *s = String_val (ptr_v);
2457 int hlmask = Int_val (hlinks_v);
2458 struct page *page = parse_pointer ("ml_postprocess", s);
2459
2460 if (!page->u.ptr) {
2461 /* deal with loadpage failed pages */
2462 goto done;
2463 }
2464
2465 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2466 if (trylock ("ml_postprocess")) {
2467 noff = 0;
2468 goto done;
2469 }
2470 if (hlmask & 2) {
2471 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2472 noff = page->slinkcount;
2473 }
2474 if (page->tgen == state.gen) {
2475 showsel (page, xoff, yoff);
2476 }
2477 unlock ("ml_postprocess");
2478
2479 done:
2480 CAMLreturn (Val_int (noff));
2481 }
2482
2483 static fz_link *getlink (struct page *page, int x, int y)
2484 {
2485 fz_point p;
2486 fz_matrix ctm;
2487 const fz_matrix *tctm;
2488 fz_link *link, *links;
2489
2490 switch (page->type) {
2491 case DPDF:
2492 trimctm (page->u.pdfpage, page->pdimno);
2493 tctm = &state.pagedims[page->pdimno].tctm;
2494 links = page->u.pdfpage->links;
2495 break;
2496
2497 case DXPS:
2498 tctm = &fz_identity;
2499 links = page->u.xpspage->links;
2500 break;
2501
2502 default:
2503 return NULL;
2504 }
2505 p.x = x;
2506 p.y = y;
2507
2508 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2509 fz_invert_matrix (&ctm, &ctm);
2510 fz_transform_point (&p, &ctm);
2511
2512 for (link = links; link; link = link->next) {
2513 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2514 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2515 return link;
2516 }
2517 }
2518 }
2519 return NULL;
2520 }
2521
2522 static void ensuretext (struct page *page)
2523 {
2524 if (state.gen != page->tgen) {
2525 droptext (page);
2526 page->tgen = state.gen;
2527 }
2528 if (!page->text) {
2529 fz_matrix ctm;
2530 fz_device *tdev;
2531
2532 page->text = fz_new_text_page (state.ctx, &fz_infinite_rect);
2533 page->sheet = fz_new_text_sheet (state.ctx);
2534 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2535 ctm = pagectm (page);
2536 fz_run_display_list (page->dlist, tdev, &ctm, &fz_infinite_rect, NULL);
2537 qsort (page->text->blocks, page->text->len,
2538 sizeof (*page->text->blocks), compareblocks);
2539 fz_free_device (tdev);
2540 }
2541 }
2542
2543 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2544 {
2545 CAMLparam2 (start_page_v, dir_v);
2546 CAMLlocal1 (ret_v);
2547 int i, dir = Int_val (dir_v);
2548 int start_page = Int_val (start_page_v);
2549 int end_page = dir > 0 ? state.pagecount : -1;
2550
2551 ret_v = Val_int (0);
2552 if (!(state.type == DPDF || state.type == DXPS)) {
2553 goto done;
2554 }
2555
2556 lock ("ml_findpage_with_links");
2557 for (i = start_page + dir; i != end_page; i += dir) {
2558 int found;
2559
2560 switch (state.type) {
2561 case DPDF:
2562 {
2563 pdf_page *page = NULL;
2564
2565 fz_try (state.ctx) {
2566 page = pdf_load_page (state.u.pdf, i);
2567 found = !!page->links;
2568 }
2569 fz_catch (state.ctx) {
2570 found = 0;
2571 }
2572 if (page) {
2573 freepdfpage (page);
2574 }
2575 }
2576 break;
2577 case DXPS:
2578 {
2579 xps_page *page = xps_load_page (state.u.xps, i);
2580 found = !!page->links;
2581 freexpspage (page);
2582 }
2583 break;
2584
2585 default:
2586 ARSERT (0 && "invalid document type");
2587 }
2588
2589 if (found) {
2590 ret_v = caml_alloc_small (1, 1);
2591 Field (ret_v, 0) = Val_int (i);
2592 goto unlock;
2593 }
2594 }
2595 unlock:
2596 unlock ("ml_findpage_with_links");
2597
2598 done:
2599 CAMLreturn (ret_v);
2600 }
2601
2602 enum { dir_first, dir_last};
2603 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2604
2605 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2606 {
2607 CAMLparam2 (ptr_v, dir_v);
2608 CAMLlocal2 (ret_v, pos_v);
2609 struct page *page;
2610 int dirtag, i, slinkindex;
2611 struct slink *found = NULL ,*slink;
2612 char *s = String_val (ptr_v);
2613
2614 page = parse_pointer ("ml_findlink", s);
2615 ret_v = Val_int (0);
2616 if (trylock ("ml_findlink")) {
2617 goto done;
2618 }
2619
2620 ensureslinks (page);
2621
2622 if (Is_block (dir_v)) {
2623 dirtag = Tag_val (dir_v);
2624 switch (dirtag) {
2625 case dir_first_visible:
2626 {
2627 int x0, y0, dir, first_index, last_index;
2628
2629 pos_v = Field (dir_v, 0);
2630 x0 = Int_val (Field (pos_v, 0));
2631 y0 = Int_val (Field (pos_v, 1));
2632 dir = Int_val (Field (pos_v, 2));
2633
2634 if (dir >= 0) {
2635 dir = 1;
2636 first_index = 0;
2637 last_index = page->slinkcount;
2638 }
2639 else {
2640 first_index = page->slinkcount - 1;
2641 last_index = -1;
2642 }
2643
2644 for (i = first_index; i != last_index; i += dir) {
2645 slink = &page->slinks[i];
2646 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2647 found = slink;
2648 break;
2649 }
2650 }
2651 }
2652 break;
2653
2654 case dir_left:
2655 slinkindex = Int_val (Field (dir_v, 0));
2656 found = &page->slinks[slinkindex];
2657 for (i = slinkindex - 1; i >= 0; --i) {
2658 slink = &page->slinks[i];
2659 if (slink->bbox.x0 < found->bbox.x0) {
2660 found = slink;
2661 break;
2662 }
2663 }
2664 break;
2665
2666 case dir_right:
2667 slinkindex = Int_val (Field (dir_v, 0));
2668 found = &page->slinks[slinkindex];
2669 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2670 slink = &page->slinks[i];
2671 if (slink->bbox.x0 > found->bbox.x0) {
2672 found = slink;
2673 break;
2674 }
2675 }
2676 break;
2677
2678 case dir_down:
2679 slinkindex = Int_val (Field (dir_v, 0));
2680 found = &page->slinks[slinkindex];
2681 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2682 slink = &page->slinks[i];
2683 if (slink->bbox.y0 >= found->bbox.y0) {
2684 found = slink;
2685 break;
2686 }
2687 }
2688 break;
2689
2690 case dir_up:
2691 slinkindex = Int_val (Field (dir_v, 0));
2692 found = &page->slinks[slinkindex];
2693 for (i = slinkindex - 1; i >= 0; --i) {
2694 slink = &page->slinks[i];
2695 if (slink->bbox.y0 <= found->bbox.y0) {
2696 found = slink;
2697 break;
2698 }
2699 }
2700 break;
2701 }
2702 }
2703 else {
2704 dirtag = Int_val (dir_v);
2705 switch (dirtag) {
2706 case dir_first:
2707 found = page->slinks;
2708 break;
2709
2710 case dir_last:
2711 if (page->slinks) {
2712 found = page->slinks + (page->slinkcount - 1);
2713 }
2714 break;
2715 }
2716 }
2717 if (found) {
2718 ret_v = caml_alloc_small (2, 1);
2719 Field (ret_v, 0) = Val_int (found - page->slinks);
2720 }
2721
2722 unlock ("ml_findlink");
2723 done:
2724 CAMLreturn (ret_v);
2725 }
2726
2727 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2728
2729 #define LINKTOVAL \
2730 { \
2731 int pageno; \
2732 \
2733 switch (link->dest.kind) { \
2734 case FZ_LINK_GOTO: \
2735 { \
2736 fz_point p; \
2737 \
2738 pageno = link->dest.ld.gotor.page; \
2739 p.x = 0; \
2740 p.y = 0; \
2741 \
2742 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2743 p.y = link->dest.ld.gotor.lt.y; \
2744 fz_transform_point (&p, &pdim->lctm); \
2745 } \
2746 tup_v = caml_alloc_tuple (2); \
2747 ret_v = caml_alloc_small (1, ugoto); \
2748 Field (tup_v, 0) = Val_int (pageno); \
2749 Field (tup_v, 1) = Val_int (p.y); \
2750 Field (ret_v, 0) = tup_v; \
2751 } \
2752 break; \
2753 \
2754 case FZ_LINK_URI: \
2755 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2756 ret_v = caml_alloc_small (1, uuri); \
2757 Field (ret_v, 0) = str_v; \
2758 break; \
2759 \
2760 case FZ_LINK_LAUNCH: \
2761 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2762 ret_v = caml_alloc_small (1, ulaunch); \
2763 Field (ret_v, 0) = str_v; \
2764 break; \
2765 \
2766 case FZ_LINK_NAMED: \
2767 str_v = caml_copy_string (link->dest.ld.named.named); \
2768 ret_v = caml_alloc_small (1, unamed); \
2769 Field (ret_v, 0) = str_v; \
2770 break; \
2771 \
2772 case FZ_LINK_GOTOR: \
2773 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2774 pageno = link->dest.ld.gotor.page; \
2775 tup_v = caml_alloc_tuple (2); \
2776 ret_v = caml_alloc_small (1, uremote); \
2777 Field (tup_v, 0) = str_v; \
2778 Field (tup_v, 1) = Val_int (pageno); \
2779 Field (ret_v, 0) = tup_v; \
2780 break; \
2781 \
2782 default: \
2783 { \
2784 char buf[80]; \
2785 \
2786 snprintf (buf, sizeof (buf), \
2787 "unhandled link kind %d", link->dest.kind); \
2788 str_v = caml_copy_string (buf); \
2789 ret_v = caml_alloc_small (1, uunexpected); \
2790 Field (ret_v, 0) = str_v; \
2791 } \
2792 break; \
2793 } \
2794 }
2795
2796 CAMLprim value ml_getlink (value ptr_v, value n_v)
2797 {
2798 CAMLparam2 (ptr_v, n_v);
2799 CAMLlocal3 (ret_v, tup_v, str_v);
2800 fz_link *link;
2801 struct page *page;
2802 struct pagedim *pdim;
2803 char *s = String_val (ptr_v);
2804
2805 ret_v = Val_int (0);
2806 if (trylock ("ml_getlink")) {
2807 goto done;
2808 }
2809
2810 page = parse_pointer ("ml_getlink", s);
2811 ensureslinks (page);
2812 pdim = &state.pagedims[page->pdimno];
2813 link = page->slinks[Int_val (n_v)].link;
2814 LINKTOVAL;
2815
2816 unlock ("ml_getlink");
2817 done:
2818 CAMLreturn (ret_v);
2819 }
2820
2821 CAMLprim value ml_getlinkcount (value ptr_v)
2822 {
2823 CAMLparam1 (ptr_v);
2824 struct page *page;
2825 char *s = String_val (ptr_v);
2826
2827 page = parse_pointer ("ml_getlinkcount", s);
2828 CAMLreturn (Val_int (page->slinkcount));
2829 }
2830
2831 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2832 {
2833 CAMLparam2 (ptr_v, n_v);
2834 CAMLlocal1 (ret_v);
2835 struct page *page;
2836 struct slink *slink;
2837 char *s = String_val (ptr_v);
2838
2839 page = parse_pointer ("ml_getlinkrect", s);
2840 ret_v = caml_alloc_tuple (4);
2841 if (trylock ("ml_getlinkrect")) {
2842 Field (ret_v, 0) = Val_int (0);
2843 Field (ret_v, 1) = Val_int (0);
2844 Field (ret_v, 2) = Val_int (0);
2845 Field (ret_v, 3) = Val_int (0);
2846 goto done;
2847 }
2848 ensureslinks (page);
2849
2850 slink = &page->slinks[Int_val (n_v)];
2851 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2852 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2853 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2854 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2855 unlock ("ml_getlinkrect");
2856
2857 done:
2858 CAMLreturn (ret_v);
2859 }
2860
2861 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2862 {
2863 CAMLparam3 (ptr_v, x_v, y_v);
2864 CAMLlocal3 (ret_v, tup_v, str_v);
2865 fz_link *link;
2866 struct page *page;
2867 char *s = String_val (ptr_v);
2868 int x = Int_val (x_v), y = Int_val (y_v);
2869 struct pagedim *pdim;
2870
2871 ret_v = Val_int (0);
2872 if (trylock ("ml_whatsunder")) {
2873 goto done;
2874 }
2875
2876 page = parse_pointer ("ml_whatsunder", s);
2877 pdim = &state.pagedims[page->pdimno];
2878 x += pdim->bounds.x0;
2879 y += pdim->bounds.y0;
2880 link = getlink (page, x, y);
2881 if (link) {
2882 LINKTOVAL;
2883 }
2884 else {
2885 fz_rect *b;
2886 fz_page_block *pageb;
2887 fz_text_block *block;
2888
2889 ensuretext (page);
2890 for (pageb = page->text->blocks;
2891 pageb < page->text->blocks + page->text->len;
2892 ++pageb) {
2893 fz_text_line *line;
2894 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2895 block = pageb->u.text;
2896
2897 b = &block->bbox;
2898 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2899 continue;
2900
2901 for (line = block->lines;
2902 line < block->lines + block->len;
2903 ++line) {
2904 fz_text_span *span;
2905
2906 b = &line->bbox;
2907 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2908 continue;
2909
2910 for (span = line->first_span; span; span = span->next) {
2911 int charnum;
2912
2913 b = &span->bbox;
2914 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2915 continue;
2916
2917 for (charnum = 0; charnum < span->len; ++charnum) {
2918 fz_rect bbox;
2919 fz_text_char_bbox (&bbox, span, charnum);
2920 b = &bbox;
2921
2922 if (x >= b->x0 && x <= b->x1
2923 && y >= b->y0 && y <= b->y1) {
2924 fz_text_style *style = span->text->style;
2925 const char *n2 =
2926 style->font && style->font->name
2927 ? style->font->name
2928 : "Span has no font name"
2929 ;
2930 FT_FaceRec *face = style->font->ft_face;
2931 if (face && face->family_name) {
2932 char *s;
2933 char *n1 = face->family_name;
2934 size_t l1 = strlen (n1);
2935 size_t l2 = strlen (n2);
2936
2937 if (l1 != l2 || memcmp (n1, n2, l1)) {
2938 s = malloc (l1 + l2 + 2);
2939 if (s) {
2940 memcpy (s, n2, l2);
2941 s[l2] = '=';
2942 memcpy (s + l2 + 1, n1, l1 + 1);
2943 str_v = caml_copy_string (s);
2944 free (s);
2945 }
2946 }
2947 }
2948 if (str_v == 0) {
2949 str_v = caml_copy_string (n2);
2950 }
2951 ret_v = caml_alloc_small (1, utext);
2952 Field (ret_v, 0) = str_v;
2953 goto unlock;
2954 }
2955 }
2956 }
2957 }
2958 }
2959 }
2960 unlock:
2961 unlock ("ml_whatsunder");
2962
2963 done:
2964 CAMLreturn (ret_v);
2965 }
2966
2967 enum { mark_page, mark_block, mark_line, mark_word };
2968
2969 static int uninteresting (int c)
2970 {
2971 return c == ' ' || c == '\n' || c == '\t' || c == '\n' || c == '\r'
2972 || ispunct (c);
2973 }
2974
2975 CAMLprim value ml_markunder (value ptr_v, value x_v, value y_v, value mark_v)
2976 {
2977 CAMLparam4 (ptr_v, x_v, y_v, mark_v);
2978 CAMLlocal1 (ret_v);
2979 fz_rect *b;
2980 struct page *page;
2981 fz_text_line *line;
2982 fz_page_block *pageb;
2983 fz_text_block *block;
2984 struct pagedim *pdim;
2985 int mark = Int_val (mark_v);
2986 char *s = String_val (ptr_v);
2987 int x = Int_val (x_v), y = Int_val (y_v);
2988
2989 ret_v = Val_bool (0);
2990 if (trylock ("ml_markunder")) {
2991 goto done;
2992 }
2993
2994 page = parse_pointer ("ml_markunder", s);
2995 pdim = &state.pagedims[page->pdimno];
2996 x += pdim->bounds.x0;
2997 y += pdim->bounds.y0;
2998
2999 ensuretext (page);
3000
3001 if (mark == mark_page) {
3002 int i;
3003
3004 for (i = page->text->len - 1; i >= 0; --i) {
3005 pageb = &page->text->blocks[i];
3006 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3007 }
3008 if (i < 0) goto unlock;
3009
3010 block = pageb->u.text;
3011
3012 page->fmark.i = 0;
3013 page->fmark.span = block->lines->first_span;
3014
3015 line = &block->lines[block->len - 1];
3016 page->lmark.i = line->last_span->len - 1;
3017 page->lmark.span = line->last_span;
3018 ret_v = Val_bool (1);
3019 goto unlock;
3020 }
3021
3022 for (pageb = page->text->blocks;
3023 pageb < page->text->blocks + page->text->len;
3024 ++pageb) {
3025 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3026 block = pageb->u.text;
3027
3028 b = &block->bbox;
3029 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3030 continue;
3031
3032 if (mark == mark_block) {
3033 page->fmark.i = 0;
3034 page->fmark.span = block->lines->first_span;
3035
3036 line = &block->lines[block->len - 1];
3037 page->lmark.i = line->last_span->len - 1;
3038 page->lmark.span = line->last_span;
3039 ret_v = Val_bool (1);
3040 goto unlock;
3041 }
3042
3043 for (line = block->lines;
3044 line < block->lines + block->len;
3045 ++line) {
3046 fz_text_span *span;
3047
3048 b = &line->bbox;
3049 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3050 continue;
3051
3052 if (mark == mark_line) {
3053 page->fmark.i = 0;
3054 page->fmark.span = line->first_span;
3055
3056 page->lmark.i = line->last_span->len - 1;
3057 page->lmark.span = line->last_span;
3058 ret_v = Val_bool (1);
3059 goto unlock;
3060 }
3061
3062 for (span = line->first_span; span; span = span->next) {
3063 int charnum;
3064
3065 b = &span->bbox;
3066 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3067 continue;
3068
3069 for (charnum = 0; charnum < span->len; ++charnum) {
3070 fz_rect bbox;
3071 fz_text_char_bbox (&bbox, span, charnum);
3072 b = &bbox;
3073
3074 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1) {
3075 /* unicode ftw */
3076 int charnum2, charnum3 = -1, charnum4 = -1;
3077
3078 if (uninteresting (span->text[charnum].c)) goto unlock;
3079
3080 for (charnum2 = charnum; charnum2 >= 0; --charnum2) {
3081 if (uninteresting (span->text[charnum2].c)) {
3082 charnum3 = charnum2 + 1;
3083 break;
3084 }
3085 }
3086 if (charnum3 == -1) charnum3 = 0;
3087
3088 for (charnum2 = charnum + 1;
3089 charnum2 < span->len;
3090 ++charnum2) {
3091 if (uninteresting (span->text[charnum2].c)) break;
3092 charnum4 = charnum2;
3093 }
3094 if (charnum4 == -1) goto unlock;
3095
3096 page->fmark.i = charnum3;
3097 page->fmark.span = span;
3098
3099 page->lmark.i = charnum4;
3100 page->lmark.span = span;
3101 ret_v = Val_bool (1);
3102 goto unlock;
3103 }
3104 }
3105 }
3106 }
3107 }
3108 unlock:
3109 if (!Bool_val (ret_v)) {
3110 page->fmark.span = NULL;
3111 page->lmark.span = NULL;
3112 page->fmark.i = 0;
3113 page->lmark.i = 0;
3114 }
3115 unlock ("ml_markunder");
3116
3117 done:
3118 CAMLreturn (ret_v);
3119 }
3120
3121 CAMLprim value ml_rectofblock (value ptr_v, value x_v, value y_v)
3122 {
3123 CAMLparam3 (ptr_v, x_v, y_v);
3124 CAMLlocal2 (ret_v, res_v);
3125 fz_rect *b = NULL;
3126 struct page *page;
3127 fz_page_block *pageb;
3128 struct pagedim *pdim;
3129 char *s = String_val (ptr_v);
3130 int x = Int_val (x_v), y = Int_val (y_v);
3131
3132 ret_v = Val_int (0);
3133 if (trylock ("ml_rectofblock")) {
3134 goto done;
3135 }
3136
3137 page = parse_pointer ("ml_rectofblock", s);
3138 pdim = &state.pagedims[page->pdimno];
3139 x += pdim->bounds.x0;
3140 y += pdim->bounds.y0;
3141
3142 ensuretext (page);
3143
3144 for (pageb = page->text->blocks;
3145 pageb < page->text->blocks + page->text->len;
3146 ++pageb) {
3147 switch (pageb->type) {
3148 case FZ_PAGE_BLOCK_TEXT:
3149 b = &pageb->u.text->bbox;
3150 break;
3151
3152 case FZ_PAGE_BLOCK_IMAGE:
3153 b = &pageb->u.image->bbox;
3154 break;
3155
3156 default:
3157 continue;
3158 }
3159
3160 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1)
3161 break;
3162 b = NULL;
3163 }
3164 if (b) {
3165 res_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3166 ret_v = caml_alloc_small (1, 1);
3167 Store_double_field (res_v, 0, b->x0);
3168 Store_double_field (res_v, 1, b->x1);
3169 Store_double_field (res_v, 2, b->y0);
3170 Store_double_field (res_v, 3, b->y1);
3171 Field (ret_v, 0) = res_v;
3172 }
3173 unlock ("ml_rectofblock");
3174
3175 done:
3176 CAMLreturn (ret_v);
3177 }
3178
3179 CAMLprim value ml_seltext (value ptr_v, value rect_v)
3180 {
3181 CAMLparam2 (ptr_v, rect_v);
3182 fz_rect b;
3183 struct page *page;
3184 struct pagedim *pdim;
3185 int i, x0, x1, y0, y1;
3186 char *s = String_val (ptr_v);
3187 int fi = 0, li = 0;
3188 fz_page_block *pageb;
3189 fz_text_block *block;
3190 fz_text_span *span, *fspan, *lspan;
3191 fz_text_line *line, *fline = NULL, *lline = NULL;
3192
3193 if (trylock ("ml_seltext")) {
3194 goto done;
3195 }
3196
3197 page = parse_pointer ("ml_seltext", s);
3198 ensuretext (page);
3199
3200 pdim = &state.pagedims[page->pdimno];
3201 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
3202 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
3203 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
3204 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
3205
3206 if (0) {
3207 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3208 glColor3ub (128, 128, 128);
3209 glRecti (x0, y0, x1, y1);
3210 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3211 }
3212
3213 fspan = lspan = NULL;
3214
3215 for (pageb= page->text->blocks;
3216 pageb < page->text->blocks + page->text->len;
3217 ++pageb) {
3218 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3219 block = pageb->u.text;
3220 for (line = block->lines;
3221 line < block->lines + block->len;
3222 ++line) {
3223 fz_text_span *span;
3224
3225 for (span = line->first_span; span; span = span->next) {
3226 for (i = 0; i < span->len; ++i) {
3227 int selected = 0;
3228
3229 fz_text_char_bbox (&b, span, i);
3230
3231 if (x0 >= b.x0 && x0 <= b.x1
3232 && y0 >= b.y0 && y0 <= b.y1) {
3233 fspan = span;
3234 fline = line;
3235 fi = i;
3236 selected = 1;
3237 }
3238 if (x1 >= b.x0 && x1 <= b.x1
3239 && y1 >= b.y0 && y1 <= b.y1) {
3240 lspan = span;
3241 lline = line;
3242 li = i;
3243 selected = 1;
3244 }
3245 if (0 && selected) {
3246 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3247 glColor3ub (128, 128, 128);
3248 glRecti (b.x0, b.y0, b.x1, b.y1);
3249 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3250 }
3251 }
3252 }
3253 }
3254 }
3255 if (y1 < y0 || x1 < x0) {
3256 int swap = 0;
3257
3258 if (fspan == lspan) {
3259 swap = 1;
3260 }
3261 else {
3262 if (y1 < y0) {
3263 if (fline != lline) {
3264 swap = 1;
3265 }
3266 }
3267 }
3268
3269 if (swap) {
3270 i = fi;
3271 span = fspan;
3272
3273 fi = li;
3274 fspan = lspan;
3275
3276 li = i;
3277 lspan = span;
3278 }
3279 }
3280
3281 page->fmark.i = fi;
3282 page->fmark.span = fspan;
3283
3284 page->lmark.i = li;
3285 page->lmark.span = lspan;
3286
3287 unlock ("ml_seltext");
3288
3289 done:
3290 CAMLreturn (Val_unit);
3291 }
3292
3293 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
3294 {
3295 char buf[4];
3296 int i, len, ret;
3297
3298 for (i = a; i <= b; ++i) {
3299 len = fz_runetochar (buf, span->text[i].c);
3300 ret = fwrite (buf, len, 1, f);
3301
3302 if (ret != 1) {
3303 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
3304 len, ret, strerror (errno));
3305 return -1;
3306 }
3307 }
3308 return 0;
3309 }
3310
3311 #ifdef __CYGWIN__
3312 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
3313 {
3314 caml_failwith ("ml_popen not implemented under Cygwin");
3315 }
3316 #else
3317 CAMLprim value ml_popen (value command_v, value fds_v)
3318 {
3319 CAMLparam2 (command_v, fds_v);
3320 CAMLlocal2 (l_v, tup_v);
3321 int ret;
3322 char *msg = NULL;
3323 value earg_v = Nothing;
3324 posix_spawnattr_t attr;
3325 posix_spawn_file_actions_t fa;
3326 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
3327
3328 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3329 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3330 }
3331
3332 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3333 msg = "posix_spawnattr_init";
3334 goto fail1;
3335 }
3336
3337 #ifdef POSIX_SPAWN_USEVFORK
3338 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3339 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3340 goto fail;
3341 }
3342 #endif
3343
3344 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3345 int fd1, fd2;
3346
3347 tup_v = Field (l_v, 0);
3348 fd1 = Int_val (Field (tup_v, 0));
3349 fd2 = Int_val (Field (tup_v, 1));
3350 if (fd2 < 0) {
3351 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3352 msg = "posix_spawn_file_actions_addclose";
3353 earg_v = tup_v;
3354 goto fail;
3355 }
3356 }
3357 else {
3358 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3359 msg = "posix_spawn_file_actions_adddup2";
3360 earg_v = tup_v;
3361 goto fail;
3362 }
3363 }
3364 }
3365
3366 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
3367 msg = "posix_spawn";
3368 goto fail;
3369 }
3370
3371 fail:
3372 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3373 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3374 }
3375
3376 fail1:
3377 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3378 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3379 strerror (ret));
3380 }
3381
3382 if (msg)
3383 unix_error (ret, msg, earg_v);
3384
3385 CAMLreturn (Val_unit);
3386 }
3387 #endif
3388
3389 CAMLprim value ml_copysel (value fd_v, value ptr_v, value clear_v)
3390 {
3391 CAMLparam3 (fd_v, ptr_v, clear_v);
3392 FILE *f;
3393 int seen = 0;
3394 struct page *page;
3395 fz_text_line *line;
3396 fz_page_block *pageb;
3397 fz_text_block *block;
3398 int fd = Int_val (fd_v);
3399 char *s = String_val (ptr_v);
3400 int clear = Bool_val (clear_v);
3401
3402 if (trylock ("ml_copysel")) {
3403 goto done;
3404 }
3405
3406 page = parse_pointer ("ml_sopysel", s);
3407
3408 if (!page->fmark.span || !page->lmark.span) {
3409 fprintf (stderr, "nothing to copy\n");
3410 goto unlock;
3411 }
3412
3413 f = fdopen (fd, "w");
3414 if (!f) {
3415 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3416 strerror (errno));
3417 f = stdout;
3418 }
3419
3420 for (pageb = page->text->blocks;
3421 pageb < page->text->blocks + page->text->len;
3422 ++pageb) {
3423 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3424 block = pageb->u.text;
3425 for (line = block->lines;
3426 line < block->lines + block->len;
3427 ++line) {
3428 fz_text_span *span;
3429
3430 for (span = line->first_span; span; span = span->next) {
3431 int a, b;
3432
3433 seen |= span == page->fmark.span || span == page->lmark.span;
3434 a = span == page->fmark.span ? page->fmark.i : 0;
3435 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3436
3437 if (seen) {
3438 if (pipespan (f, span, a, b)) {
3439 goto close;
3440 }
3441 if (span == line->last_span) {
3442 if (putc ('\n', f) == EOF) {
3443 fprintf (stderr,
3444 "failed break line on sel pipe: %s\n",
3445 strerror (errno));
3446 goto close;
3447 }
3448 }
3449 if (span == page->lmark.span) {
3450 goto endloop;
3451 }
3452 }
3453 }
3454 }
3455 }
3456 endloop:
3457 if (clear) {
3458 page->lmark.span = NULL;
3459 page->fmark.span = NULL;
3460 }
3461
3462 close:
3463 if (f != stdout) {
3464 int ret = fclose (f);
3465 fd = -1;
3466 if (ret == -1) {
3467 if (errno != ECHILD) {
3468 fprintf (stderr, "failed to close sel pipe: %s\n",
3469 strerror (errno));
3470 }
3471 }
3472 }
3473 unlock:
3474 unlock ("ml_copysel");
3475
3476 done:
3477 if (fd >= 0) {
3478 if (close (fd)) {
3479 fprintf (stderr, "failed to close sel pipe: %s\n",
3480 strerror (errno));
3481 }
3482 }
3483 CAMLreturn (Val_unit);
3484 }
3485
3486 CAMLprim value ml_getpdimrect (value pagedimno_v)
3487 {
3488 CAMLparam1 (pagedimno_v);
3489 CAMLlocal1 (ret_v);
3490 int pagedimno = Int_val (pagedimno_v);
3491 fz_rect box;
3492
3493 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3494 if (trylock ("ml_getpdimrect")) {
3495 box = fz_empty_rect;
3496 }
3497 else {
3498 box = state.pagedims[pagedimno].mediabox;
3499 unlock ("ml_getpdimrect");
3500 }
3501
3502 Store_double_field (ret_v, 0, box.x0);
3503 Store_double_field (ret_v, 1, box.x1);
3504 Store_double_field (ret_v, 2, box.y0);
3505 Store_double_field (ret_v, 3, box.y1);
3506
3507 CAMLreturn (ret_v);
3508 }
3509
3510 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3511 value dw_v, value cols_v)
3512 {
3513 CAMLparam3 (winw_v, winh_v, dw_v);
3514 CAMLlocal1 (ret_v);
3515 int i;
3516 double zoom = -1.;
3517 double maxh = 0.0;
3518 struct pagedim *p;
3519 double winw = Int_val (winw_v);
3520 double winh = Int_val (winh_v);
3521 double dw = Int_val (dw_v);
3522 double cols = Int_val (cols_v);
3523 double pw = 1.0, ph = 1.0;
3524
3525 if (trylock ("ml_zoom_for_height")) {
3526 goto done;
3527 }
3528
3529 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3530 double w = p->pagebox.x1 / cols;
3531 double h = p->pagebox.y1;
3532 if (h > maxh) {
3533 maxh = h;
3534 ph = h;
3535 if (state.fitmodel != FitProportional) pw = w;
3536 }
3537 if ((state.fitmodel == FitProportional) && w > pw) pw = w;
3538 }
3539
3540 zoom = (((winh / ph) * pw) + dw) / winw;
3541 unlock ("ml_zoom_for_height");
3542 done:
3543 ret_v = caml_copy_double (zoom);
3544 CAMLreturn (ret_v);
3545 }
3546
3547 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3548 {
3549 CAMLparam4 (pt_v, x_v, y_v, string_v);
3550 CAMLlocal1 (ret_v);
3551 int pt = Int_val(pt_v);
3552 int x = Int_val (x_v);
3553 int y = Int_val (y_v);
3554 double w;
3555
3556 w = draw_string (state.face, pt, x, y, String_val (string_v));
3557 ret_v = caml_copy_double (w);
3558 CAMLreturn (ret_v);
3559 }
3560
3561 CAMLprim value ml_measure_string (value pt_v, value string_v)
3562 {
3563 CAMLparam2 (pt_v, string_v);
3564 CAMLlocal1 (ret_v);
3565 int pt = Int_val (pt_v);
3566 double w;
3567
3568 w = measure_string (state.face, pt, String_val (string_v));
3569 ret_v = caml_copy_double (w);
3570 CAMLreturn (ret_v);
3571 }
3572
3573 CAMLprim value ml_getpagebox (value opaque_v)
3574 {
3575 CAMLparam1 (opaque_v);
3576 CAMLlocal1 (ret_v);
3577 fz_rect rect;
3578 fz_irect bbox;
3579 fz_matrix ctm;
3580 fz_device *dev;
3581 char *s = String_val (opaque_v);
3582 struct page *page = parse_pointer ("ml_getpagebox", s);
3583
3584 ret_v = caml_alloc_tuple (4);
3585 dev = fz_new_bbox_device (state.ctx, &rect);
3586 dev->hints |= FZ_IGNORE_SHADE;
3587
3588 switch (page->type) {
3589 case DPDF:
3590 ctm = pagectm (page);
3591 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, &ctm, NULL);
3592 break;
3593
3594 case DXPS:
3595 ctm = pagectm (page);
3596 xps_run_page (state.u.xps, page->u.xpspage, dev, &ctm, NULL);
3597 break;
3598
3599 default:
3600 rect = fz_infinite_rect;
3601 break;
3602 }
3603
3604 fz_free_device (dev);
3605 fz_round_rect (&bbox, &rect);
3606 Field (ret_v, 0) = Val_int (bbox.x0);
3607 Field (ret_v, 1) = Val_int (bbox.y0);
3608 Field (ret_v, 2) = Val_int (bbox.x1);
3609 Field (ret_v, 3) = Val_int (bbox.y1);
3610
3611 CAMLreturn (ret_v);
3612 }
3613
3614 CAMLprim value ml_setaalevel (value level_v)
3615 {
3616 CAMLparam1 (level_v);
3617
3618 state.aalevel = Int_val (level_v);
3619 CAMLreturn (Val_unit);
3620 }
3621
3622 #undef pixel
3623 #include <X11/Xlib.h>
3624 #include <GL/glx.h>
3625
3626 static struct {
3627 Display *dpy;
3628 GLXContext ctx;
3629 GLXDrawable drawable;
3630 } glx;
3631
3632 #include "keysym2ucs.c"
3633
3634 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3635 {
3636 CAMLparam1 (keysym_v);
3637 CAMLlocal1 (str_v);
3638 KeySym keysym = Int_val (keysym_v);
3639 Rune rune;
3640 int len;
3641 char buf[5];
3642
3643 rune = keysym2ucs (keysym);
3644 len = fz_runetochar (buf, rune);
3645 buf[len] = 0;
3646 str_v = caml_copy_string (buf);
3647 CAMLreturn (str_v);
3648 }
3649
3650 CAMLprim value ml_glx (value win_v)
3651 {
3652 CAMLparam1 (win_v);
3653 XVisualInfo *visual;
3654 int screen, wid = Int_val (win_v);
3655 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3656
3657 glx.dpy = XOpenDisplay (NULL);
3658 if (!glx.dpy) {
3659 caml_failwith ("XOpenDisplay");
3660 }
3661
3662 screen = DefaultScreen (glx.dpy);
3663 visual = glXChooseVisual (glx.dpy, screen, attributes);
3664 if (!visual) {
3665 XCloseDisplay (glx.dpy);
3666 glx.dpy = NULL;
3667 caml_failwith ("glXChooseVisual");
3668 }
3669
3670 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3671 XFree (visual);
3672 if (!glx.ctx) {
3673 XCloseDisplay (glx.dpy);
3674 glx.dpy = NULL;
3675 caml_failwith ("glXCreateContext");
3676 }
3677
3678 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3679 glXDestroyContext (glx.dpy, glx.ctx);
3680 XCloseDisplay (glx.dpy);
3681 glx.dpy = NULL;
3682 glx.ctx = NULL;
3683 caml_failwith ("glXMakeCurrent");
3684 }
3685 glx.drawable = wid;
3686 CAMLreturn (Val_unit);
3687 }
3688
3689 CAMLprim value ml_swapb (value unit_v)
3690 {
3691 CAMLparam1 (unit_v);
3692 glXSwapBuffers (glx.dpy, glx.drawable);
3693 CAMLreturn (Val_unit);
3694 }
3695
3696 CAMLprim value ml_glxsync (value unit_v)
3697 {
3698 CAMLparam1 (unit_v);
3699 if (glx.dpy && glx.ctx) {
3700 glXWaitX ();
3701 glXWaitGL ();
3702 }
3703 CAMLreturn (Val_unit);
3704 }
3705
3706 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3707 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3708
3709 CAMLprim value ml_platform (value unit_v)
3710 {
3711 CAMLparam1 (unit_v);
3712 int platid = piunknown;
3713
3714 #if defined __linux__
3715 platid = pilinux;
3716 #elif defined __CYGWIN__
3717 platid = picygwin;
3718 #elif defined __DragonFly__
3719 platid = pidragonflybsd;
3720 #elif defined __FreeBSD__
3721 platid = pifreebsd;
3722 #elif defined __OpenBSD__
3723 platid = piopenbsd;
3724 #elif defined __NetBSD__
3725 platid = pinetbsd;
3726 #elif defined __sun__
3727 platid = pisun;
3728 #elif defined __APPLE__
3729 platid = piosx;
3730 #endif
3731 CAMLreturn (Val_int (platid));
3732 }
3733
3734 CAMLprim value ml_cloexec (value fd_v)
3735 {
3736 CAMLparam1 (fd_v);
3737 int fd = Int_val (fd_v);
3738
3739 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3740 uerror ("fcntl", Nothing);
3741 }
3742 CAMLreturn (Val_unit);
3743 }
3744
3745 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3746 {
3747 CAMLparam2 (w_v, h_v);
3748 CAMLlocal1 (ret_v);
3749 struct pbo *pbo;
3750 int w = Int_val (w_v);
3751 int h = Int_val (h_v);
3752 int cs = Int_val (cs_v);
3753
3754 if (state.pbo_usable) {
3755 pbo = calloc (sizeof (*pbo), 1);
3756 if (!pbo) {
3757 err (1, "calloc pbo");
3758 }
3759
3760 switch (cs) {
3761 case 0:
3762 case 1:
3763 pbo->size = w*h*4;
3764 break;
3765 case 2:
3766 pbo->size = w*h*2;
3767 break;
3768 default:
3769 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3770 }
3771
3772 state.glGenBuffersARB (1, &pbo->id);
3773 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3774 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3775 NULL, GL_STREAM_DRAW);
3776 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3777 GL_READ_WRITE);
3778 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3779 if (!pbo->ptr) {
3780 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3781 state.glDeleteBuffersARB (1, &pbo->id);
3782 free (pbo);
3783 ret_v = caml_copy_string ("0");
3784 }
3785 else {
3786 int res;
3787 char *s;
3788
3789 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3790 if (res < 0) {
3791 err (1, "snprintf %" FMT_ptr " failed", pbo);
3792 }
3793 s = malloc (res+1);
3794 if (!s) {
3795 err (1, "malloc %d bytes failed", res+1);
3796 }
3797 res = sprintf (s, "%" FMT_ptr, pbo);
3798 if (res < 0) {
3799 err (1, "sprintf %" FMT_ptr " failed", pbo);
3800 }
3801 ret_v = caml_copy_string (s);
3802 free (s);
3803 }
3804 }
3805 else {
3806 ret_v = caml_copy_string ("0");
3807 }
3808 CAMLreturn (ret_v);
3809 }
3810
3811 CAMLprim value ml_freepbo (value s_v)
3812 {
3813 CAMLparam1 (s_v);
3814 char *s = String_val (s_v);
3815 struct tile *tile = parse_pointer ("ml_freepbo", s);
3816
3817 if (tile->pbo) {
3818 state.glDeleteBuffersARB (1, &tile->pbo->id);
3819 tile->pbo->id = -1;
3820 tile->pbo->ptr = NULL;
3821 tile->pbo->size = -1;
3822 }
3823 CAMLreturn (Val_unit);
3824 }
3825
3826 CAMLprim value ml_unmappbo (value s_v)
3827 {
3828 CAMLparam1 (s_v);
3829 char *s = String_val (s_v);
3830 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3831
3832 if (tile->pbo) {
3833 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3834 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3835 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3836 }
3837 tile->pbo->ptr = NULL;
3838 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3839 }
3840 CAMLreturn (Val_unit);
3841 }
3842
3843 static void setuppbo (void)
3844 {
3845 #define GGPA(n) *(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n)
3846 GGPA (glBindBufferARB);
3847 if (state.glBindBufferARB) {
3848 GGPA (glUnmapBufferARB);
3849 if (state.glUnmapBufferARB) {
3850 GGPA (glMapBufferARB);
3851 if (state.glMapBufferARB) {
3852 GGPA (glBufferDataARB);
3853 if (state.glBufferDataARB) {
3854 GGPA (glGenBuffersARB);
3855 if (state.glGenBuffersARB) {
3856 GGPA (glDeleteBuffersARB);
3857 if (state.glDeleteBuffersARB) {
3858 state.pbo_usable = 1;
3859 }
3860 }
3861 }
3862 }
3863 }
3864 }
3865 #undef GGPA
3866 }
3867
3868 CAMLprim value ml_pbo_usable (value unit_v)
3869 {
3870 CAMLparam1 (unit_v);
3871 CAMLreturn (Val_bool (state.pbo_usable));
3872 }
3873
3874 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
3875 {
3876 CAMLparam3 (ptr_v, x_v, y_v);
3877 CAMLlocal2 (ret_v, tup_v);
3878 struct page *page;
3879 char *s = String_val (ptr_v);
3880 int x = Int_val (x_v), y = Int_val (y_v);
3881 struct pagedim *pdim;
3882 fz_point p;
3883 fz_matrix ctm;
3884
3885 page = parse_pointer ("ml_unproject", s);
3886 pdim = &state.pagedims[page->pdimno];
3887
3888 ret_v = Val_int (0);
3889 if (trylock ("ml_unproject")) {
3890 goto done;
3891 }
3892
3893 switch (page->type) {
3894 case DPDF:
3895 trimctm (page->u.pdfpage, page->pdimno);
3896 break;
3897
3898 default:
3899 break;
3900 }
3901 p.x = x;
3902 p.y = y;
3903
3904 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
3905 fz_invert_matrix (&ctm, &ctm);
3906 fz_transform_point (&p, &ctm);
3907
3908 tup_v = caml_alloc_tuple (2);
3909 ret_v = caml_alloc_small (1, 1);
3910 Field (tup_v, 0) = Val_int (p.x);
3911 Field (tup_v, 1) = Val_int (p.y);
3912 Field (ret_v, 0) = tup_v;
3913
3914 unlock ("ml_unproject");
3915 done:
3916 CAMLreturn (ret_v);
3917 }
3918
3919 static void makestippletex (void)
3920 {
3921 const char pixels[] = "\xff\xff\0\0";
3922 glGenTextures (1, &state.stid);
3923 glBindTexture (GL_TEXTURE_1D, state.stid);
3924 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
3925 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
3926 glTexImage1D (
3927 GL_TEXTURE_1D,
3928 0,
3929 GL_ALPHA,
3930 4,
3931 0,
3932 GL_ALPHA,
3933 GL_UNSIGNED_BYTE,
3934 pixels
3935 );
3936 }
3937
3938 CAMLprim value ml_init (value pipe_v, value params_v)
3939 {
3940 CAMLparam2 (pipe_v, params_v);
3941 CAMLlocal2 (trim_v, fuzz_v);
3942 int ret;
3943 int texcount;
3944 char *fontpath;
3945 int colorspace;
3946 int mustoresize;
3947 int haspboext;
3948 struct sigaction sa;
3949
3950 state.cr = Int_val (Field (pipe_v, 0));
3951 state.cw = Int_val (Field (pipe_v, 1));
3952 state.rotate = Int_val (Field (params_v, 0));
3953 state.fitmodel = Int_val (Field (params_v, 1));
3954 trim_v = Field (params_v, 2);
3955 texcount = Int_val (Field (params_v, 3));
3956 state.sliceheight = Int_val (Field (params_v, 4));
3957 mustoresize = Int_val (Field (params_v, 5));
3958 colorspace = Int_val (Field (params_v, 6));
3959 fontpath = String_val (Field (params_v, 7));
3960 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3961 if (!state.trimcachepath) {
3962 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
3963 strerror (errno));
3964 }
3965 haspboext = Bool_val (Field (params_v, 9));
3966
3967 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3968
3969 state.trimmargins = Bool_val (Field (trim_v, 0));
3970 fuzz_v = Field (trim_v, 1);
3971 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3972 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3973 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3974 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3975
3976 set_tex_params (colorspace);
3977
3978 if (*fontpath) {
3979 state.face = load_font (fontpath);
3980 }
3981 else {
3982 unsigned int len;
3983 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3984
3985 state.face = load_builtin_font (base, len);
3986 }
3987 if (!state.face) _exit (1);
3988
3989 realloctexts (texcount);
3990
3991 if (haspboext) {
3992 setuppbo ();
3993 }
3994
3995 makestippletex ();
3996 #ifdef __CYGWIN__
3997 sa.sa_handler = SIG_IGN;
3998 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
3999 #else
4000 sa.sa_handler = SIG_DFL;
4001 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
4002 #endif
4003 if (sigemptyset (&sa.sa_mask)) {
4004 err (1, "sigemptyset");
4005 }
4006 if (sigaction (SIGCHLD, &sa, NULL)) {
4007 err (1, "sigaction");
4008 }
4009
4010 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
4011 if (ret) {
4012 errx (1, "pthread_create: %s", strerror (ret));
4013 }
4014
4015 CAMLreturn (Val_unit);
4016 }
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