?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Cosmetics
[llpp.git] / link.c
blob45ef3f261b198ff0e10c47072afd2f3efcb51a40
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 <mupdf/fitz.h>
34 #include <mupdf/cbz.h>
35 #include <mupdf/pdf.h>
36 #include <mupdf/xps.h>
37
38 #include FT_FREETYPE_H
39
40 #define PIGGYBACK
41
42 #ifndef __USE_GNU
43 extern char **environ;
44 #endif
45
46 #define MIN(a,b) ((a) < (b) ? (a) : (b))
47 #define MAX(a,b) ((a) > (b) ? (a) : (b))
48
49 #if defined __GNUC__
50 #define NORETURN_ATTR __attribute__ ((noreturn))
51 #define UNUSED_ATTR __attribute__ ((unused))
52 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
53 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
54 #else
55 #define NORETURN_ATTR
56 #define UNUSED_ATTR
57 #define OPTIMIZE_ATTR(n)
58 #define GCC_FMT_ATTR(a, b)
59 #endif
60
61 #define FMT_s "zu"
62
63 #define FMT_ptr "p"
64 #define FMT_ptr_cast(p) (p)
65 #define FMT_ptr_cast2(p) (p)
66
67 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
68 err (int exitcode, const char *fmt, ...)
69 {
70 va_list ap;
71 int savederrno;
72
73 savederrno = errno;
74 va_start (ap, fmt);
75 vfprintf (stderr, fmt, ap);
76 va_end (ap);
77 fprintf (stderr, ": %s\n", strerror (savederrno));
78 fflush (stderr);
79 _exit (exitcode);
80 }
81
82 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
83 errx (int exitcode, const char *fmt, ...)
84 {
85 va_list ap;
86
87 va_start (ap, fmt);
88 vfprintf (stderr, fmt, ap);
89 va_end (ap);
90 fputc ('\n', stderr);
91 fflush (stderr);
92 _exit (exitcode);
93 }
94
95 #ifndef GL_TEXTURE_RECTANGLE_ARB
96 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
97 #endif
98
99 #ifndef GL_BGRA
100 #define GL_BGRA 0x80E1
101 #endif
102
103 #ifndef GL_UNSIGNED_INT_8_8_8_8
104 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
105 #endif
106
107 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
108 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
109 #endif
110
111 #if 0
112 #define lprintf printf
113 #else
114 #define lprintf(...)
115 #endif
116
117 #define ARSERT(cond) for (;;) { \
118 if (!(cond)) { \
119 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
120 } \
121 break; \
122 }
123
124 struct slice {
125 int h;
126 int texindex;
127 };
128
129 struct tile {
130 int w, h;
131 int slicecount;
132 int sliceheight;
133 struct pbo *pbo;
134 fz_pixmap *pixmap;
135 struct slice slices[1];
136 };
137
138 struct pagedim {
139 int pageno;
140 int rotate;
141 int left;
142 int tctmready;
143 fz_irect bounds;
144 fz_rect pagebox;
145 fz_rect mediabox;
146 fz_matrix ctm, zoomctm, lctm, tctm;
147 };
148
149 struct slink {
150 fz_irect bbox;
151 fz_link *link;
152 };
153
154 enum { DPDF, DXPS, DCBZ };
155
156 struct page {
157 int tgen;
158 int sgen;
159 int type;
160 int pageno;
161 int pdimno;
162 fz_text_page *text;
163 fz_text_sheet *sheet;
164 union {
165 void *ptr;
166 pdf_page *pdfpage;
167 xps_page *xpspage;
168 cbz_page *cbzpage;
169 } u;
170 fz_display_list *dlist;
171 int slinkcount;
172 struct slink *slinks;
173 struct mark {
174 int i;
175 fz_text_span *span;
176 } fmark, lmark;
177 void (*freepage) (void *);
178 };
179
180 struct {
181 int type;
182 int sliceheight;
183 struct pagedim *pagedims;
184 int pagecount;
185 int pagedimcount;
186 union {
187 pdf_document *pdf;
188 xps_document *xps;
189 cbz_document *cbz;
190 } u;
191 fz_context *ctx;
192 int w, h;
193
194 int texindex;
195 int texcount;
196 GLuint *texids;
197
198 GLenum texiform;
199 GLenum texform;
200 GLenum texty;
201
202 fz_colorspace *colorspace;
203
204 struct {
205 int w, h;
206 struct slice *slice;
207 } *texowners;
208
209 int rotate;
210 enum { FitWidth, FitProportional, FitPage } fitmodel;
211 int trimmargins;
212 int needoutline;
213 int gen;
214 int aalevel;
215
216 int trimanew;
217 fz_irect trimfuzz;
218 fz_pixmap *pig;
219
220 pthread_t thread;
221 int cr, cw;
222 FT_Face face;
223
224 void (*closedoc) (void);
225 void (*freepage) (void *);
226
227 char *trimcachepath;
228 int cxack;
229
230 GLuint stid;
231
232 int pbo_usable;
233 void (*glBindBufferARB) (GLenum, GLuint);
234 GLboolean (*glUnmapBufferARB) (GLenum);
235 void *(*glMapBufferARB) (GLenum, GLenum);
236 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
237 void (*glGenBuffersARB) (GLsizei, GLuint *);
238 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
239 } state;
240
241 struct pbo {
242 GLuint id;
243 void *ptr;
244 size_t size;
245 };
246
247 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
248 {
249 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
250 }
251
252 static void UNUSED_ATTR debug_bbox (const char *cap, fz_irect r)
253 {
254 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
255 }
256
257 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
258 {
259 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
260 m.a, m.b, m.c, m.d, m.e, m.f);
261 }
262
263 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
264
265 static void lock (const char *cap)
266 {
267 int ret = pthread_mutex_lock (&mutex);
268 if (ret) {
269 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
270 }
271 }
272
273 static void unlock (const char *cap)
274 {
275 int ret = pthread_mutex_unlock (&mutex);
276 if (ret) {
277 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
278 }
279 }
280
281 static int trylock (const char *cap)
282 {
283 int ret = pthread_mutex_trylock (&mutex);
284 if (ret && ret != EBUSY) {
285 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
286 }
287 return ret == EBUSY;
288 }
289
290 static void *parse_pointer (const char *cap, const char *s)
291 {
292 int ret;
293 void *ptr;
294
295 ret = sscanf (s, "%" FMT_ptr, FMT_ptr_cast (&ptr));
296 if (ret != 1) {
297 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
298 }
299 return ptr;
300 }
301
302 static double now (void)
303 {
304 struct timeval tv;
305
306 if (gettimeofday (&tv, NULL)) {
307 err (1, "gettimeofday");
308 }
309 return tv.tv_sec + tv.tv_usec*1e-6;
310 }
311
312 static int hasdata (void)
313 {
314 int ret, avail;
315 ret = ioctl (state.cr, FIONREAD, &avail);
316 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
317 return avail > 0;
318 }
319
320 CAMLprim value ml_hasdata (value fd_v)
321 {
322 CAMLparam1 (fd_v);
323 int ret, avail;
324
325 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
326 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
327 CAMLreturn (Val_bool (avail > 0));
328 }
329
330 static void readdata (void *p, int size)
331 {
332 ssize_t n;
333
334 again:
335 n = read (state.cr, p, size);
336 if (n < 0) {
337 if (errno == EINTR) goto again;
338 err (1, "read (req %d, ret %zd)", size, n);
339 }
340 if (n - size) {
341 if (!n) errx (1, "EOF while reading");
342 errx (1, "read (req %d, ret %zd)", size, n);
343 }
344 }
345
346 static void writedata (char *p, int size)
347 {
348 ssize_t n;
349
350 p[0] = (size >> 24) & 0xff;
351 p[1] = (size >> 16) & 0xff;
352 p[2] = (size >> 8) & 0xff;
353 p[3] = (size >> 0) & 0xff;
354
355 n = write (state.cw, p, size + 4);
356 if (n - size - 4) {
357 if (!n) errx (1, "EOF while writing data");
358 err (1, "write (req %d, ret %zd)", size + 4, n);
359 }
360 }
361
362 static int readlen (void)
363 {
364 unsigned char p[4];
365
366 readdata (p, 4);
367 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
368 }
369
370 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
371 {
372 int size = 200, len;
373 va_list ap;
374 char *buf;
375
376 buf = malloc (size);
377 for (;;) {
378 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
379
380 va_start (ap, fmt);
381 len = vsnprintf (buf + 4, size - 4, fmt, ap);
382 va_end (ap);
383
384 if (len > -1) {
385 if (len < size - 4) {
386 writedata (buf, len);
387 break;
388 }
389 else size = len + 5;
390 }
391 else {
392 err (1, "vsnprintf for `%s' failed", fmt);
393 }
394 buf = realloc (buf, size);
395 }
396 free (buf);
397 }
398
399 static void closepdf (void)
400 {
401 if (state.u.pdf) {
402 pdf_close_document (state.u.pdf);
403 state.u.pdf = NULL;
404 }
405 }
406
407 static void closexps (void)
408 {
409 if (state.u.xps) {
410 xps_close_document (state.u.xps);
411 state.u.xps = NULL;
412 }
413 }
414
415 static void closecbz (void)
416 {
417 if (state.u.cbz) {
418 cbz_close_document (state.u.cbz);
419 state.u.cbz = NULL;
420 }
421 }
422
423 static void freepdfpage (void *ptr)
424 {
425 pdf_free_page (state.u.pdf, ptr);
426 }
427
428 static void freeemptyxxxpage (void *ptr)
429 {
430 (void) ptr;
431 }
432
433 static void freexpspage (void *ptr)
434 {
435 xps_free_page (state.u.xps, ptr);
436 }
437
438 static void freecbzpage (void *ptr)
439 {
440 cbz_free_page (state.u.cbz, ptr);
441 }
442
443 static void openxref (char *filename, char *password)
444 {
445 int i, len;
446
447 for (i = 0; i < state.texcount; ++i) {
448 state.texowners[i].w = -1;
449 state.texowners[i].slice = NULL;
450 }
451
452 if (state.closedoc) state.closedoc ();
453
454 len = strlen (filename);
455
456 state.type = DPDF;
457 if (len > 4) {
458 char ext[4];
459
460 ext[0] = tolower ((int) filename[len-3]);
461 ext[1] = tolower ((int) filename[len-2]);
462 ext[2] = tolower ((int) filename[len-1]);
463
464 /**/ if (ext[0] == 'x' && ext[1] == 'p' && ext[2] == 's') {
465 state.type = DXPS;
466 }
467 else if (ext[0] == 'c' && ext[1] == 'b' && ext[2] == 'z') {
468 state.type = DCBZ;
469 }
470 }
471
472 if (state.pagedims) {
473 free (state.pagedims);
474 state.pagedims = NULL;
475 }
476 state.pagedimcount = 0;
477
478 fz_set_aa_level (state.ctx, state.aalevel);
479 switch (state.type) {
480 case DPDF:
481 state.u.pdf = pdf_open_document (state.ctx, filename);
482 if (pdf_needs_password (state.u.pdf)) {
483 int okay = pdf_authenticate_password (state.u.pdf, password);
484 if (!okay) {
485 errx (1, "invalid password");
486 }
487 }
488 state.pagecount = pdf_count_pages (state.u.pdf);
489 state.closedoc = closepdf;
490 state.freepage = freepdfpage;
491 break;
492
493 case DXPS:
494 state.u.xps = xps_open_document (state.ctx, filename);
495 state.pagecount = xps_count_pages (state.u.xps);
496 state.closedoc = closexps;
497 state.freepage = freexpspage;
498 break;
499
500 case DCBZ:
501 state.u.cbz = cbz_open_document (state.ctx, filename);
502 state.pagecount = cbz_count_pages (state.u.cbz);
503 state.closedoc = closecbz;
504 state.freepage = freecbzpage;
505 break;
506 }
507 }
508
509 static void pdfinfo (void)
510 {
511 if (state.type == DPDF) {
512 pdf_obj *infoobj;
513
514 printd ("info PDF version\t%d.%d",
515 state.u.pdf->version / 10, state.u.pdf->version % 10);
516
517 infoobj = pdf_dict_gets (pdf_trailer (state.u.pdf), "Info");
518 if (infoobj) {
519 int i;
520 char *s;
521 char *items[] = { "Title", "Author", "Creator",
522 "Producer", "CreationDate" };
523
524 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
525 pdf_obj *obj = pdf_dict_gets (infoobj, items[i]);
526 s = pdf_to_utf8 (state.u.pdf, obj);
527 if (*s) {
528 if (i == 0) {
529 printd ("title %s", s);
530 }
531 printd ("info %s\t%s", items[i], s);
532 }
533 fz_free (state.ctx, s);
534 }
535 }
536 printd ("infoend");
537 }
538 }
539
540 static void unlinktile (struct tile *tile)
541 {
542 int i;
543
544 for (i = 0; i < tile->slicecount; ++i) {
545 struct slice *s = &tile->slices[i];
546
547 if (s->texindex != -1) {
548 if (state.texowners[s->texindex].slice == s) {
549 state.texowners[s->texindex].slice = NULL;
550 }
551 }
552 }
553 }
554
555 static void freepage (struct page *page)
556 {
557 if (page->text) {
558 fz_free_text_page (state.ctx, page->text);
559 }
560 if (page->sheet) {
561 fz_free_text_sheet (state.ctx, page->sheet);
562 }
563 if (page->slinks) {
564 free (page->slinks);
565 }
566 fz_drop_display_list (state.ctx, page->dlist);
567 page->freepage (page->u.ptr);
568 free (page);
569 }
570
571 static void freetile (struct tile *tile)
572 {
573 unlinktile (tile);
574 if (!tile->pbo) {
575 #ifndef PIGGYBACK
576 fz_drop_pixmap (state.ctx, tile->pixmap);
577 #else
578 if (state.pig) {
579 fz_drop_pixmap (state.ctx, state.pig);
580 }
581 state.pig = tile->pixmap;
582 #endif
583 }
584 else {
585 free (tile->pbo);
586 fz_drop_pixmap (state.ctx, tile->pixmap);
587 }
588 free (tile);
589 }
590
591 #ifdef __ALTIVEC__
592 #include <stdint.h>
593 #include <altivec.h>
594
595 static int cacheline32bytes;
596
597 static void __attribute__ ((constructor)) clcheck (void)
598 {
599 char **envp = environ;
600 unsigned long *auxv;
601
602 while (*envp++);
603
604 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
605 if (*auxv == 19) {
606 cacheline32bytes = auxv[1] == 32;
607 return;
608 }
609 }
610 }
611
612 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
613 {
614 size_t size = pixmap->w * pixmap->h * pixmap->n;
615 if (cacheline32bytes && size > 32) {
616 intptr_t a1, a2, diff;
617 size_t sizea, i;
618 vector unsigned char v = vec_splat_u8 (-1);
619 vector unsigned char *p;
620
621 a1 = a2 = (intptr_t) pixmap->samples;
622 a2 = (a1 + 31) & ~31;
623 diff = a2 - a1;
624 sizea = size - diff;
625 p = (void *) a2;
626
627 while (a1 != a2) *(char *) a1++ = 0xff;
628 for (i = 0; i < (sizea & ~31); i += 32) {
629 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
630 vec_st (v, i, p);
631 vec_st (v, i + 16, p);
632 }
633 while (i < sizea) *((char *) a1 + i++) = 0xff;
634 }
635 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
636 }
637 #else
638 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
639 #endif
640
641 static void trimctm (pdf_page *page, int pindex)
642 {
643 fz_matrix ctm;
644 struct pagedim *pdim = &state.pagedims[pindex];
645
646 if (!pdim->tctmready) {
647 if (state.trimmargins) {
648 fz_rect realbox;
649 fz_matrix rm, sm, tm, im, ctm1;
650
651 fz_rotate (&rm, -pdim->rotate);
652 fz_scale (&sm, 1, -1);
653 fz_concat (&ctm, &rm, &sm);
654 realbox = pdim->mediabox;
655 fz_transform_rect (&realbox, &ctm);
656 fz_translate (&tm, -realbox.x0, -realbox.y0);
657 fz_concat (&ctm1, &ctm, &tm);
658 fz_invert_matrix (&im, &page->ctm);
659 fz_concat (&ctm, &im, &ctm1);
660 }
661 else {
662 ctm = fz_identity;
663 }
664 pdim->tctm = ctm;
665 pdim->tctmready = 1;
666 }
667 }
668
669 static fz_matrix pagectm (struct page *page)
670 {
671 fz_matrix ctm, tm;
672
673 if (page->type == DPDF) {
674 trimctm (page->u.pdfpage, page->pdimno);
675 fz_concat (&ctm,
676 &state.pagedims[page->pdimno].tctm,
677 &state.pagedims[page->pdimno].ctm);
678 }
679 else {
680 struct pagedim *pdim = &state.pagedims[page->pdimno];
681
682 fz_translate (&tm, -pdim->mediabox.x0, -pdim->mediabox.y0);
683 fz_concat (&ctm, &tm, &state.pagedims[page->pdimno].ctm);
684 }
685 return ctm;
686 }
687
688 static void *loadpage (int pageno, int pindex)
689 {
690 fz_device *dev;
691 struct page *page;
692
693 page = calloc (sizeof (struct page), 1);
694 if (!page) {
695 err (1, "calloc page %d", pageno);
696 }
697
698 page->dlist = fz_new_display_list (state.ctx);
699 dev = fz_new_list_device (state.ctx, page->dlist);
700 fz_try (state.ctx) {
701 switch (state.type) {
702 case DPDF:
703 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
704 pdf_run_page (state.u.pdf, page->u.pdfpage, dev,
705 &fz_identity, NULL);
706 page->freepage = freepdfpage;
707 break;
708
709 case DXPS:
710 page->u.xpspage = xps_load_page (state.u.xps, pageno);
711 xps_run_page (state.u.xps, page->u.xpspage, dev,
712 &fz_identity, NULL);
713 page->freepage = freexpspage;
714 break;
715
716 case DCBZ:
717 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
718 cbz_run_page (state.u.cbz, page->u.cbzpage, dev,
719 &fz_identity, NULL);
720 page->freepage = freecbzpage;
721 break;
722 }
723 }
724 fz_catch (state.ctx) {
725 page->u.ptr = NULL;
726 page->freepage = freeemptyxxxpage;
727 }
728 fz_free_device (dev);
729
730 page->pdimno = pindex;
731 page->pageno = pageno;
732 page->sgen = state.gen;
733 page->tgen = state.gen;
734 page->type = state.type;
735
736 return page;
737 }
738
739 static struct tile *alloctile (int h)
740 {
741 int i;
742 int slicecount;
743 size_t tilesize;
744 struct tile *tile;
745
746 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
747 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
748 tile = calloc (tilesize, 1);
749 if (!tile) {
750 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
751 }
752 for (i = 0; i < slicecount; ++i) {
753 int sh = MIN (h, state.sliceheight);
754 tile->slices[i].h = sh;
755 tile->slices[i].texindex = -1;
756 h -= sh;
757 }
758 tile->slicecount = slicecount;
759 tile->sliceheight = state.sliceheight;
760 return tile;
761 }
762
763 #ifdef OBSCURED_OPT
764 struct obs {
765 int cured;
766 fz_irect b;
767 };
768
769 static void obs_fill_image (fz_device *dev, fz_image *image,
770 const fz_matrix *ctm, float alpha)
771 {
772 struct obs *obs = dev->user;
773
774 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
775 fz_irect b;
776 fz_rect rect = fz_unit_rect;
777
778 fz_transform_rect (&rect, ctm);
779 fz_round_rect (&b, &rect);
780 fz_intersect_irect (&b, &obs->b);
781 obs->cured = b.x0 == obs->b.x0
782 && b.x1 == obs->b.x1
783 && b.y0 == obs->b.y0
784 && b.y1 == obs->b.y1;
785 }
786 }
787
788 static int obscured (struct page *page, fz_irect bbox)
789 {
790 fz_rect rect;
791 fz_matrix ctm;
792 fz_device dev;
793 struct obs obs;
794
795 memset (&dev, 0, sizeof (dev));
796 memset (&obs, 0, sizeof (obs));
797 dev.hints = 0;
798 dev.flags = 0;
799 dev.user = &obs;
800 dev.ctx = state.ctx;
801 dev.fill_image = obs_fill_image;
802 obs.b = bbox;
803 fz_rect_from_irect (&rect, &bbox);
804 ctm = pagectm (page);
805 fz_run_display_list (page->dlist, &dev, &ctm, &rect, NULL);
806 return obs.cured;
807 }
808 #define OBSCURED obscured
809 #else
810 #define OBSCURED(a, b) 0
811 #endif
812
813 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
814 struct pbo *pbo)
815 {
816 fz_rect rect;
817 fz_irect bbox;
818 fz_matrix ctm;
819 fz_device *dev;
820 struct tile *tile;
821 struct pagedim *pdim;
822
823 tile = alloctile (h);
824 pdim = &state.pagedims[page->pdimno];
825
826 bbox = pdim->bounds;
827 bbox.x0 += x;
828 bbox.y0 += y;
829 bbox.x1 = bbox.x0 + w;
830 bbox.y1 = bbox.y0 + h;
831
832 if (state.pig) {
833 if (state.pig->w == w
834 && state.pig->h == h
835 && state.pig->colorspace == state.colorspace) {
836 tile->pixmap = state.pig;
837 tile->pixmap->x = bbox.x0;
838 tile->pixmap->y = bbox.y0;
839 }
840 else {
841 fz_drop_pixmap (state.ctx, state.pig);
842 }
843 state.pig = NULL;
844 }
845 if (!tile->pixmap) {
846 if (pbo) {
847 tile->pixmap =
848 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
849 &bbox, pbo->ptr);
850 tile->pbo = pbo;
851 }
852 else {
853 tile->pixmap =
854 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox);
855 }
856 }
857
858 tile->w = w;
859 tile->h = h;
860 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
861 clearpixmap (tile->pixmap);
862 }
863 dev = fz_new_draw_device (state.ctx, tile->pixmap);
864 ctm = pagectm (page);
865 fz_rect_from_irect (&rect, &bbox);
866 fz_run_display_list (page->dlist, dev, &ctm, &rect, NULL);
867 fz_free_device (dev);
868
869 return tile;
870 }
871
872 static void initpdims (void)
873 {
874 double start, end;
875 FILE *trimf = NULL;
876 fz_rect rootmediabox;
877 int pageno, trim, show;
878 int trimw = 0, cxcount;
879
880 start = now ();
881
882 if (state.trimmargins && state.trimcachepath) {
883 trimf = fopen (state.trimcachepath, "rb");
884 if (!trimf) {
885 trimf = fopen (state.trimcachepath, "wb");
886 trimw = 1;
887 }
888 }
889
890 if (state.trimmargins || state.type == DPDF || !state.cxack)
891 cxcount = state.pagecount;
892 else
893 cxcount = MIN (state.pagecount, 1);
894
895 if (state.type == DPDF) {
896 pdf_obj *obj;
897 obj = pdf_dict_getp (pdf_trailer (state.u.pdf),
898 "Root/Pages/MediaBox");
899 pdf_to_rect (state.ctx, obj, &rootmediabox);
900 }
901
902 for (pageno = 0; pageno < cxcount; ++pageno) {
903 int rotate = 0;
904 struct pagedim *p;
905 fz_rect mediabox;
906
907 switch (state.type) {
908 case DPDF: {
909 pdf_obj *pageref = pdf_lookup_page_obj (state.u.pdf, pageno);
910 pdf_obj *pageobj = pdf_resolve_indirect (pageref);
911
912 if (state.trimmargins) {
913 pdf_obj *obj;
914 pdf_page *page;
915
916 fz_try (state.ctx) {
917 page = pdf_load_page (state.u.pdf, pageno);
918 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
919 trim = state.trimanew || !obj;
920 if (trim) {
921 fz_rect rect;
922 fz_matrix ctm;
923 fz_device *dev;
924
925 dev = fz_new_bbox_device (state.ctx, &rect);
926 dev->hints |= FZ_IGNORE_SHADE;
927 fz_invert_matrix (&ctm, &page->ctm);
928 pdf_run_page (state.u.pdf, page, dev,
929 &fz_identity, NULL);
930 fz_free_device (dev);
931
932 rect.x0 += state.trimfuzz.x0;
933 rect.x1 += state.trimfuzz.x1;
934 rect.y0 += state.trimfuzz.y0;
935 rect.y1 += state.trimfuzz.y1;
936 fz_transform_rect (&rect, &ctm);
937 fz_intersect_rect (&rect, &page->mediabox);
938
939 if (fz_is_empty_rect (&rect)) {
940 mediabox = page->mediabox;
941 }
942 else {
943 mediabox = rect;
944 }
945
946 obj = pdf_new_array (state.u.pdf, 4);
947 pdf_array_push (obj, pdf_new_real (state.u.pdf,
948 mediabox.x0));
949 pdf_array_push (obj, pdf_new_real (state.u.pdf,
950 mediabox.y0));
951 pdf_array_push (obj, pdf_new_real (state.u.pdf,
952 mediabox.x1));
953 pdf_array_push (obj, pdf_new_real (state.u.pdf,
954 mediabox.y1));
955 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
956 }
957 else {
958 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
959 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
960 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
961 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
962 }
963
964 rotate = page->rotate;
965 pdf_free_page (state.u.pdf, page);
966
967 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
968 if (show) {
969 printd ("progress %f Trimming %d",
970 (double) (pageno + 1) / state.pagecount,
971 pageno + 1);
972 }
973 }
974 fz_catch (state.ctx) {
975 fprintf (stderr, "failed to load page %d\n", pageno+1);
976 }
977 }
978 else {
979 int empty = 0;
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 mediabox.x0 = 0;
986 mediabox.y0 = 0;
987 mediabox.x1 = 612;
988 mediabox.y1 = 792;
989 empty = 1;
990 }
991
992 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "CropBox"),
993 &cropbox);
994 if (!fz_is_empty_rect (&cropbox)) {
995 fz_intersect_rect (&mediabox, &cropbox);
996 }
997 else {
998 if (empty) {
999 if (fz_is_empty_rect (&rootmediabox)) {
1000 fprintf (stderr,
1001 "cannot find page size for page %d\n",
1002 pageno+1);
1003 }
1004 else {
1005 mediabox = rootmediabox;
1006 }
1007 }
1008 }
1009 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
1010 }
1011 break;
1012 }
1013
1014 case DXPS:
1015 {
1016 xps_page *page;
1017
1018 fz_try (state.ctx) {
1019 page = xps_load_page (state.u.xps, pageno);
1020 xps_bound_page (state.u.xps, page, &mediabox);
1021 rotate = 0;
1022 if (state.trimmargins) {
1023 fz_rect rect;
1024 fz_device *dev;
1025
1026 dev = fz_new_bbox_device (state.ctx, &rect);
1027 dev->hints |= FZ_IGNORE_SHADE;
1028 xps_run_page (state.u.xps, page, dev,
1029 &fz_identity, NULL);
1030 fz_free_device (dev);
1031
1032 rect.x0 += state.trimfuzz.x0;
1033 rect.x1 += state.trimfuzz.x1;
1034 rect.y0 += state.trimfuzz.y0;
1035 rect.y1 += state.trimfuzz.y1;
1036 fz_intersect_rect (&rect, &mediabox);
1037
1038 if (!fz_is_empty_rect (&rect)) {
1039 mediabox = rect;
1040 }
1041 }
1042 xps_free_page (state.u.xps, page);
1043 if (!state.cxack) {
1044 printd ("progress %f loading %d",
1045 (double) (pageno + 1) / state.pagecount,
1046 pageno + 1);
1047 }
1048 }
1049 fz_catch (state.ctx) {
1050 }
1051 }
1052 break;
1053
1054 case DCBZ:
1055 {
1056 rotate = 0;
1057 mediabox.x0 = 0;
1058 mediabox.y0 = 0;
1059 mediabox.x1 = 900;
1060 mediabox.y1 = 900;
1061 if (state.trimmargins && trimw) {
1062 cbz_page *page;
1063
1064 fz_try (state.ctx) {
1065 page = cbz_load_page (state.u.cbz, pageno);
1066 cbz_bound_page (state.u.cbz, page, &mediabox);
1067 cbz_free_page (state.u.cbz, page);
1068 printd ("progress %f Trimming %d",
1069 (double) (pageno + 1) / state.pagecount,
1070 pageno + 1);
1071 }
1072 fz_catch (state.ctx) {
1073 fprintf (stderr, "failed to load page %d\n", pageno+1);
1074 }
1075 if (trimf) {
1076 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1077 if (n - 1) {
1078 err (1, "fwrite trim mediabox");
1079 }
1080 }
1081 }
1082 else {
1083 if (trimf) {
1084 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1085 if (n - 1) {
1086 err (1, "fread trim mediabox");
1087 }
1088 }
1089 else {
1090 if (state.cxack) {
1091 cbz_page *page;
1092 fz_try (state.ctx) {
1093 page = cbz_load_page (state.u.cbz, pageno);
1094 cbz_bound_page (state.u.cbz, page, &mediabox);
1095 cbz_free_page (state.u.cbz, page);
1096 }
1097 fz_catch (state.ctx) {
1098 fprintf (stderr, "failed to load cbz page\n");
1099 }
1100 }
1101 }
1102 }
1103 }
1104 break;
1105
1106 default:
1107 ARSERT (0 && state.type);
1108 }
1109
1110 if (state.pagedimcount == 0
1111 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1112 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1113 size_t size;
1114
1115 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1116 state.pagedims = realloc (state.pagedims, size);
1117 if (!state.pagedims) {
1118 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1119 size, state.pagedimcount + 1);
1120 }
1121
1122 p = &state.pagedims[state.pagedimcount++];
1123 p->rotate = rotate;
1124 p->mediabox = mediabox;
1125 p->pageno = pageno;
1126 }
1127 }
1128 end = now ();
1129 if (state.trimmargins) {
1130 printd ("progress 1 Trimmed %d pages in %f seconds",
1131 state.pagecount, end - start);
1132 }
1133 else {
1134 printd ("vmsg Processed %d pages in %f seconds",
1135 state.pagecount, end - start);
1136 }
1137 state.trimanew = 0;
1138 if (trimf) {
1139 if (fclose (trimf)) {
1140 err (1, "fclose");
1141 }
1142 }
1143 }
1144
1145 static void layout (void)
1146 {
1147 int pindex;
1148 fz_rect box;
1149 fz_matrix ctm, rm;
1150 struct pagedim *p = p;
1151 double zw, w, maxw = 0.0, zoom = zoom;
1152
1153 if (state.pagedimcount == 0) return;
1154
1155 switch (state.fitmodel) {
1156 case FitProportional:
1157 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1158 double x0, x1;
1159
1160 p = &state.pagedims[pindex];
1161 fz_rotate (&rm, p->rotate + state.rotate);
1162 box = p->mediabox;
1163 fz_transform_rect (&box, &rm);
1164
1165 x0 = MIN (box.x0, box.x1);
1166 x1 = MAX (box.x0, box.x1);
1167
1168 w = x1 - x0;
1169 maxw = MAX (w, maxw);
1170 zoom = state.w / maxw;
1171 }
1172 break;
1173
1174 case FitPage:
1175 maxw = state.w;
1176 break;
1177
1178 case FitWidth:
1179 break;
1180
1181 default:
1182 ARSERT (0 && state.fitmodel);
1183 }
1184
1185 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1186 fz_rect rect;
1187 fz_matrix tm, sm;
1188
1189 p = &state.pagedims[pindex];
1190 fz_rotate (&ctm, state.rotate);
1191 fz_rotate (&rm, p->rotate + state.rotate);
1192 box = p->mediabox;
1193 fz_transform_rect (&box, &rm);
1194 w = box.x1 - box.x0;
1195 switch (state.fitmodel) {
1196 case FitProportional:
1197 p->left = ((maxw - w) * zoom) / 2.0;
1198 break;
1199 case FitPage:
1200 {
1201 double zh, h;
1202 zw = maxw / w;
1203 h = box.y1 - box.y0;
1204 zh = state.h / h;
1205 zoom = MIN (zw, zh);
1206 p->left = (maxw - (w * zoom)) / 2.0;
1207 }
1208 break;
1209 case FitWidth:
1210 p->left = 0;
1211 zoom = state.w / w;
1212 break;
1213 }
1214
1215 fz_scale (&p->zoomctm, zoom, zoom);
1216 fz_concat (&ctm, &p->zoomctm, &ctm);
1217
1218 fz_rotate (&rm, p->rotate);
1219 p->pagebox = p->mediabox;
1220 fz_transform_rect (&p->pagebox, &rm);
1221 p->pagebox.x1 -= p->pagebox.x0;
1222 p->pagebox.y1 -= p->pagebox.y0;
1223 p->pagebox.x0 = 0;
1224 p->pagebox.y0 = 0;
1225 rect = p->pagebox;
1226 fz_transform_rect (&rect, &ctm);
1227 fz_round_rect (&p->bounds, &rect);
1228 p->ctm = ctm;
1229
1230 fz_translate (&tm, 0, -p->mediabox.y1);
1231 fz_scale (&sm, zoom, -zoom);
1232 fz_concat (&ctm, &tm, &sm);
1233 fz_concat (&p->lctm, &ctm, &rm);
1234
1235 p->tctmready = 0;
1236 }
1237
1238 do {
1239 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1240 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1241 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1242 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1243 int w = x1 - x0;
1244 int h = y1 - y0;
1245
1246 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1247 } while (p-- != state.pagedims);
1248 }
1249
1250 static
1251 struct anchor { int n; int x; int y; int w; int h; }
1252 desttoanchor (fz_link_dest *dest)
1253 {
1254 int i;
1255 struct anchor a;
1256 struct pagedim *pdim = state.pagedims;
1257
1258 a.n = -1;
1259 a.x = 0;
1260 a.y = 0;
1261 for (i = 0; i < state.pagedimcount; ++i) {
1262 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1263 break;
1264 pdim = &state.pagedims[i];
1265 }
1266 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1267 fz_point p;
1268 if (dest->ld.gotor.flags & fz_link_flag_l_valid)
1269 p.x = dest->ld.gotor.lt.x;
1270 else
1271 p.x = 0.0;
1272 p.y = dest->ld.gotor.lt.y;
1273 fz_transform_point (&p, &pdim->lctm);
1274 a.y = p.y;
1275 a.x = p.x;
1276 }
1277 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1278 double x0, x1, y0, y1;
1279
1280 x0 = MIN (pdim->bounds.x0, pdim->bounds.x1);
1281 x1 = MAX (pdim->bounds.x0, pdim->bounds.x1);
1282 a.w = x1 - x0;
1283 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1284 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1285 a.h = y1 - y0;
1286 a.n = dest->ld.gotor.page;
1287 }
1288 return a;
1289 }
1290
1291 static void recurse_outline (fz_outline *outline, int level)
1292 {
1293 while (outline) {
1294 if (outline->dest.kind == FZ_LINK_GOTO) {
1295 struct anchor a = desttoanchor (&outline->dest);
1296
1297 if (a.n >= 0) {
1298 printd ("o %d %d %d %d %s",
1299 level, a.n, a.y, a.h, outline->title);
1300 }
1301 }
1302 else {
1303 printd ("emsg Unhandled outline kind %d for %s\n",
1304 outline->dest.kind, outline->title);
1305 }
1306 if (outline->down) {
1307 recurse_outline (outline->down, level + 1);
1308 }
1309 outline = outline->next;
1310 }
1311 }
1312
1313 static void process_outline (void)
1314 {
1315 fz_outline *outline;
1316
1317 if (!state.needoutline) return;
1318
1319 state.needoutline = 0;
1320 switch (state.type) {
1321 case DPDF:
1322 outline = pdf_load_outline (state.u.pdf);
1323 break;
1324 case DXPS:
1325 outline = xps_load_outline (state.u.xps);
1326 break;
1327 default:
1328 outline = NULL;
1329 break;
1330 }
1331 if (outline) {
1332 recurse_outline (outline, 0);
1333 fz_free_outline (state.ctx, outline);
1334 }
1335 }
1336
1337 static char *strofspan (fz_text_span *span)
1338 {
1339 char *p;
1340 char utf8[10];
1341 fz_text_char *ch;
1342 size_t size = 0, cap = 80;
1343
1344 p = malloc (cap + 1);
1345 if (!p) return NULL;
1346
1347 for (ch = span->text; ch < span->text + span->len; ++ch) {
1348 int n = fz_runetochar (utf8, ch->c);
1349 if (size + n > cap) {
1350 cap *= 2;
1351 p = realloc (p, cap + 1);
1352 if (!p) return NULL;
1353 }
1354
1355 memcpy (p + size, utf8, n);
1356 size += n;
1357 }
1358 p[size] = 0;
1359 return p;
1360 }
1361
1362 static int matchspan (regex_t *re, fz_text_page *page,
1363 fz_text_span *span, fz_matrix ctm,
1364 int stop, int pageno, double start)
1365 {
1366 int ret;
1367 char *p;
1368 regmatch_t rm;
1369 int a, b, c;
1370 fz_rect sb, eb;
1371 fz_point p1, p2, p3, p4;
1372
1373 p = strofspan (span);
1374 if (!p) return -1;
1375
1376 ret = regexec (re, p, 1, &rm, 0);
1377 if (ret) {
1378 free (p);
1379 if (ret != REG_NOMATCH) {
1380 size_t size;
1381 char errbuf[80];
1382 size = regerror (ret, re, errbuf, sizeof (errbuf));
1383 printd ("msg regexec error `%.*s'",
1384 (int) size, errbuf);
1385 return -1;
1386 }
1387 return 0;
1388 }
1389 else {
1390 int l = span->len;
1391
1392 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1393 c += fz_runelen (span->text[a].c);
1394 }
1395 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1396 c += fz_runelen (span->text[b].c);
1397 }
1398
1399 if (fz_runelen (span->text[b].c) > 1) {
1400 b = MAX (0, b-1);
1401 }
1402
1403 fz_text_char_bbox (&sb, span, a);
1404 fz_text_char_bbox (&eb, span, b);
1405
1406 p1.x = sb.x0;
1407 p1.y = sb.y0;
1408 p2.x = eb.x1;
1409 p2.y = sb.y0;
1410 p3.x = eb.x1;
1411 p3.y = eb.y1;
1412 p4.x = sb.x0;
1413 p4.y = eb.y1;
1414
1415 if (!stop) {
1416 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1417 pageno, 1,
1418 p1.x, p1.y,
1419 p2.x, p2.y,
1420 p3.x, p3.y,
1421 p4.x, p4.y);
1422
1423 printd ("progress 1 found at %d `%.*s' in %f sec",
1424 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1425 now () - start);
1426 }
1427 else {
1428 printd ("match %d %d %f %f %f %f %f %f %f %f",
1429 pageno, 2,
1430 p1.x, p1.y,
1431 p2.x, p2.y,
1432 p3.x, p3.y,
1433 p4.x, p4.y);
1434 }
1435 free (p);
1436 return 1;
1437 }
1438 }
1439
1440 static int compareblocks (const void *l, const void *r)
1441 {
1442 fz_text_block const *ls = l;
1443 fz_text_block const* rs = r;
1444 return ls->bbox.y0 - rs->bbox.y0;
1445 }
1446
1447 /* wishful thinking function */
1448 static void search (regex_t *re, int pageno, int y, int forward)
1449 {
1450 int i, j;
1451 fz_matrix ctm;
1452 fz_device *tdev;
1453 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1454 fz_text_page *text;
1455 fz_text_sheet *sheet;
1456 struct pagedim *pdim, *pdimprev;
1457 int stop = 0, niters = 0;
1458 double start, end;
1459
1460 if (!(state.type == DPDF || state.type == DXPS))
1461 return;
1462
1463 start = now ();
1464 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1465 if (niters++ == 5) {
1466 niters = 0;
1467 if (hasdata ()) {
1468 printd ("progress 1 attention requested aborting search at %d",
1469 pageno);
1470 stop = 1;
1471 }
1472 else {
1473 printd ("progress %f searching in page %d",
1474 (double) (pageno + 1) / state.pagecount,
1475 pageno);
1476 }
1477 }
1478 pdimprev = NULL;
1479 for (i = 0; i < state.pagedimcount; ++i) {
1480 pdim = &state.pagedims[i];
1481 if (pdim->pageno == pageno) {
1482 goto found;
1483 }
1484 if (pdim->pageno > pageno) {
1485 pdim = pdimprev;
1486 goto found;
1487 }
1488 pdimprev = pdim;
1489 }
1490 pdim = pdimprev;
1491 found:
1492
1493 sheet = fz_new_text_sheet (state.ctx);
1494 text = fz_new_text_page (state.ctx);
1495 tdev = fz_new_text_device (state.ctx, sheet, text);
1496
1497 switch (state.type) {
1498 case DPDF:
1499 u.ptr = NULL;
1500 fz_try (state.ctx) {
1501 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1502 trimctm (u.pdfpage, pdim - state.pagedims);
1503 fz_concat (&ctm, &pdim->tctm, &pdim->zoomctm);
1504 fz_begin_page (tdev, &fz_infinite_rect, &ctm);
1505 pdf_run_page (state.u.pdf, u.pdfpage, tdev, &ctm, NULL);
1506 fz_end_page (tdev);
1507 }
1508 fz_catch (state.ctx) {
1509 fz_free_device (tdev);
1510 u.ptr = NULL;
1511 goto nextiter;
1512 }
1513 break;
1514
1515 case DXPS:
1516 u.xpspage = xps_load_page (state.u.xps, pageno);
1517 xps_run_page (state.u.xps, u.xpspage, tdev, &pdim->ctm, NULL);
1518 break;
1519
1520 default:
1521 ARSERT (0 && state.type);
1522 }
1523
1524 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1525 fz_free_device (tdev);
1526
1527 for (j = 0; j < text->len; ++j) {
1528 int k;
1529 fz_page_block *pb;
1530 fz_text_block *block;
1531
1532 pb = &text->blocks[forward ? j : text->len - 1 - j];
1533 if (pb->type != FZ_PAGE_BLOCK_TEXT) continue;
1534 block = pb->u.text;
1535
1536 for (k = 0; k < block->len; ++k) {
1537 fz_text_line *line;
1538 fz_text_span *span;
1539
1540 if (forward) {
1541 line = &block->lines[k];
1542 if (line->bbox.y0 < y + 1) continue;
1543 }
1544 else {
1545 line = &block->lines[block->len - 1 - k];
1546 if (line->bbox.y0 > y - 1) continue;
1547 }
1548
1549 for (span = line->first_span; span; span = span->next) {
1550 switch (matchspan (re, text, span, ctm,
1551 stop, pageno, start)) {
1552 case 0: break;
1553 case 1: stop = 1; break;
1554 case -1: stop = 1; goto endloop;
1555 }
1556 }
1557 }
1558 }
1559 nextiter:
1560 if (forward) {
1561 pageno += 1;
1562 y = 0;
1563 }
1564 else {
1565 pageno -= 1;
1566 y = INT_MAX;
1567 }
1568 endloop:
1569 fz_free_text_page (state.ctx, text);
1570 fz_free_text_sheet (state.ctx, sheet);
1571 if (u.ptr) {
1572 state.freepage (u.ptr);
1573 }
1574 }
1575 end = now ();
1576 if (!stop) {
1577 printd ("progress 1 no matches %f sec", end - start);
1578 }
1579 printd ("clearrects");
1580 }
1581
1582 static void set_tex_params (int colorspace)
1583 {
1584 union {
1585 unsigned char b;
1586 unsigned int s;
1587 } endianness = {1};
1588
1589 switch (colorspace) {
1590 case 0:
1591 state.texiform = GL_RGBA8;
1592 state.texform = GL_RGBA;
1593 state.texty = GL_UNSIGNED_BYTE;
1594 state.colorspace = fz_device_rgb (state.ctx);
1595 break;
1596 case 1:
1597 state.texiform = GL_RGBA8;
1598 state.texform = GL_BGRA;
1599 state.texty = endianness.s > 1
1600 ? GL_UNSIGNED_INT_8_8_8_8
1601 : GL_UNSIGNED_INT_8_8_8_8_REV;
1602 state.colorspace = fz_device_bgr (state.ctx);
1603 break;
1604 case 2:
1605 state.texiform = GL_LUMINANCE_ALPHA;
1606 state.texform = GL_LUMINANCE_ALPHA;
1607 state.texty = GL_UNSIGNED_BYTE;
1608 state.colorspace = fz_device_gray (state.ctx);
1609 break;
1610 default:
1611 errx (1, "invalid colorspce %d", colorspace);
1612 }
1613 }
1614
1615 static void realloctexts (int texcount)
1616 {
1617 size_t size;
1618
1619 if (texcount == state.texcount) return;
1620
1621 if (texcount < state.texcount) {
1622 glDeleteTextures (state.texcount - texcount,
1623 state.texids + texcount);
1624 }
1625
1626 size = texcount * sizeof (*state.texids);
1627 state.texids = realloc (state.texids, size);
1628 if (!state.texids) {
1629 err (1, "realloc texids %" FMT_s, size);
1630 }
1631
1632 size = texcount * sizeof (*state.texowners);
1633 state.texowners = realloc (state.texowners, size);
1634 if (!state.texowners) {
1635 err (1, "realloc texowners %" FMT_s, size);
1636 }
1637 if (texcount > state.texcount) {
1638 int i;
1639
1640 glGenTextures (texcount - state.texcount,
1641 state.texids + state.texcount);
1642 for (i = state.texcount; i < texcount; ++i) {
1643 state.texowners[i].w = -1;
1644 state.texowners[i].slice = NULL;
1645 }
1646 }
1647 state.texcount = texcount;
1648 state.texindex = 0;
1649 }
1650
1651 static char *mbtoutf8 (char *s)
1652 {
1653 char *p, *r;
1654 wchar_t *tmp;
1655 size_t i, ret, len;
1656
1657 len = mbstowcs (NULL, s, strlen (s));
1658 if (len == 0) {
1659 return s;
1660 }
1661 else {
1662 if (len == (size_t) -1) {
1663 return s;
1664 }
1665 }
1666
1667 tmp = malloc (len * sizeof (wchar_t));
1668 if (!tmp) {
1669 return s;
1670 }
1671
1672 ret = mbstowcs (tmp, s, len);
1673 if (ret == (size_t) -1) {
1674 free (tmp);
1675 return s;
1676 }
1677
1678 len = 0;
1679 for (i = 0; i < ret; ++i) {
1680 len += fz_runelen (tmp[i]);
1681 }
1682
1683 p = r = malloc (len + 1);
1684 if (!r) {
1685 free (tmp);
1686 return s;
1687 }
1688
1689 for (i = 0; i < ret; ++i) {
1690 p += fz_runetochar (p, tmp[i]);
1691 }
1692 *p = 0;
1693 free (tmp);
1694 return r;
1695 }
1696
1697 CAMLprim value ml_mbtoutf8 (value s_v)
1698 {
1699 CAMLparam1 (s_v);
1700 CAMLlocal1 (ret_v);
1701 char *s, *r;
1702
1703 s = String_val (s_v);
1704 r = mbtoutf8 (s);
1705 if (r == s) {
1706 ret_v = s_v;
1707 }
1708 else {
1709 ret_v = caml_copy_string (r);
1710 free (r);
1711 }
1712 CAMLreturn (ret_v);
1713 }
1714
1715 static void * mainloop (void *unused)
1716 {
1717 char *p = NULL;
1718 int len, ret, oldlen = 0;
1719
1720 for (;;) {
1721 len = readlen ();
1722 if (len == 0) {
1723 errx (1, "readlen returned 0");
1724 }
1725
1726 if (oldlen < len + 1) {
1727 p = realloc (p, len + 1);
1728 if (!p) {
1729 err (1, "realloc %d failed", len + 1);
1730 }
1731 oldlen = len + 1;
1732 }
1733 readdata (p, len);
1734 p[len] = 0;
1735
1736 if (!strncmp ("open", p, 4)) {
1737 int wthack, off;
1738 char *password;
1739 char *filename;
1740 char *utf8filename;
1741 size_t filenamelen;
1742
1743 ret = sscanf (p + 5, " %d %d %n", &wthack, &state.cxack, &off);
1744 if (ret != 2) {
1745 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1746 }
1747
1748 filename = p + 5 + off;
1749 filenamelen = strlen (filename);
1750 password = filename + filenamelen + 1;
1751
1752 lock ("open");
1753 openxref (filename, password);
1754 pdfinfo ();
1755 initpdims ();
1756 unlock ("open");
1757
1758 if (!wthack) {
1759 utf8filename = mbtoutf8 (filename);
1760 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1761 if (utf8filename != filename) {
1762 free (utf8filename);
1763 }
1764 }
1765 state.needoutline = 1;
1766 }
1767 else if (!strncmp ("cs", p, 2)) {
1768 int i, colorspace;
1769
1770 ret = sscanf (p + 2, " %d", &colorspace);
1771 if (ret != 1) {
1772 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1773 }
1774 lock ("cs");
1775 set_tex_params (colorspace);
1776 for (i = 0; i < state.texcount; ++i) {
1777 state.texowners[i].w = -1;
1778 state.texowners[i].slice = NULL;
1779 }
1780 unlock ("cs");
1781 }
1782 else if (!strncmp ("freepage", p, 8)) {
1783 void *ptr;
1784
1785 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1786 if (ret != 1) {
1787 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1788 }
1789 freepage (ptr);
1790 }
1791 else if (!strncmp ("freetile", p, 8)) {
1792 void *ptr;
1793
1794 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1795 if (ret != 1) {
1796 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1797 }
1798 freetile (ptr);
1799 }
1800 else if (!strncmp ("search", p, 6)) {
1801 int icase, pageno, y, ret, len2, forward;
1802 char *pattern;
1803 regex_t re;
1804
1805 ret = sscanf (p + 6, " %d %d %d %d,%n",
1806 &icase, &pageno, &y, &forward, &len2);
1807 if (ret != 4) {
1808 errx (1, "malformed search `%s' ret=%d", p, ret);
1809 }
1810
1811 pattern = p + 6 + len2;
1812 ret = regcomp (&re, pattern,
1813 REG_EXTENDED | (icase ? REG_ICASE : 0));
1814 if (ret) {
1815 char errbuf[80];
1816 size_t size;
1817
1818 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1819 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1820 }
1821 else {
1822 search (&re, pageno, y, forward);
1823 regfree (&re);
1824 }
1825 }
1826 else if (!strncmp ("geometry", p, 8)) {
1827 int w, h, fitmodel;
1828
1829 printd ("clear");
1830 ret = sscanf (p + 8, " %d %d %d", &w, &h, &fitmodel);
1831 if (ret != 3) {
1832 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1833 }
1834
1835 lock ("geometry");
1836 state.h = h;
1837 if (w != state.w) {
1838 int i;
1839 state.w = w;
1840 for (i = 0; i < state.texcount; ++i) {
1841 state.texowners[i].slice = NULL;
1842 }
1843 }
1844 state.fitmodel = fitmodel;
1845 layout ();
1846 process_outline ();
1847
1848 state.gen++;
1849 unlock ("geometry");
1850 printd ("continue %d", state.pagecount);
1851 }
1852 else if (!strncmp ("reqlayout", p, 9)) {
1853 char *nameddest;
1854 int rotate, fitmodel, off, h;
1855
1856 printd ("clear");
1857 ret = sscanf (p + 9, " %d %d %d %n",
1858 &rotate, &fitmodel, &h, &off);
1859 if (ret != 3) {
1860 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1861 }
1862 lock ("reqlayout");
1863 if (state.rotate != rotate || state.fitmodel != fitmodel) {
1864 state.gen += 1;
1865 }
1866 state.rotate = rotate;
1867 state.fitmodel = fitmodel;
1868 state.h = h;
1869 layout ();
1870 process_outline ();
1871
1872 nameddest = p + 9 + off;
1873 if (state.type == DPDF && nameddest && *nameddest) {
1874 struct anchor a;
1875 fz_link_dest dest;
1876 pdf_obj *needle, *obj;
1877
1878 needle = pdf_new_string (state.u.pdf, nameddest,
1879 strlen (nameddest));
1880 obj = pdf_lookup_dest (state.u.pdf, needle);
1881 if (obj) {
1882 dest = pdf_parse_link_dest (state.u.pdf, FZ_LINK_GOTO, obj);
1883
1884 a = desttoanchor (&dest);
1885 if (a.n >= 0) {
1886 printd ("a %d %d %d", a.n, a.x, a.y);
1887 }
1888 else {
1889 printd ("emsg failed to parse destination `%s'\n",
1890 nameddest);
1891 }
1892 }
1893 else {
1894 printd ("emsg destination `%s' not found\n",
1895 nameddest);
1896 }
1897 pdf_drop_obj (needle);
1898 }
1899
1900 state.gen++;
1901 unlock ("reqlayout");
1902 printd ("continue %d", state.pagecount);
1903 }
1904 else if (!strncmp ("page", p, 4)) {
1905 double a, b;
1906 struct page *page;
1907 int pageno, pindex, ret;
1908
1909 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1910 if (ret != 2) {
1911 errx (1, "bad page line `%.*s' ret=%d", len, p, ret);
1912 }
1913
1914 lock ("page");
1915 a = now ();
1916 page = loadpage (pageno, pindex);
1917 b = now ();
1918 unlock ("page");
1919
1920 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1921 }
1922 else if (!strncmp ("tile", p, 4)) {
1923 int x, y, w, h, ret;
1924 struct page *page;
1925 struct tile *tile;
1926 double a, b;
1927 void *data;
1928
1929 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1930 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1931 if (ret != 6) {
1932 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1933 }
1934
1935 lock ("tile");
1936 a = now ();
1937 tile = rendertile (page, x, y, w, h, data);
1938 b = now ();
1939 unlock ("tile");
1940
1941 printd ("tile %d %d %" FMT_ptr " %u %f",
1942 x, y,
1943 FMT_ptr_cast2 (tile),
1944 tile->w * tile->h * tile->pixmap->n,
1945 b - a);
1946 }
1947 else if (!strncmp ("settrim", p, 7)) {
1948 fz_irect fuzz;
1949 int trimmargins;
1950
1951 ret = sscanf (p + 7, " %d %d %d %d %d",
1952 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1953 if (ret != 5) {
1954 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1955 }
1956 printd ("clear");
1957 lock ("settrim");
1958 state.trimmargins = trimmargins;
1959 state.needoutline = 1;
1960 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1961 state.trimanew = 1;
1962 state.trimfuzz = fuzz;
1963 }
1964 state.pagedimcount = 0;
1965 free (state.pagedims);
1966 state.pagedims = NULL;
1967 initpdims ();
1968 layout ();
1969 process_outline ();
1970 unlock ("settrim");
1971 printd ("continue %d", state.pagecount);
1972 }
1973 else if (!strncmp ("sliceh", p, 6)) {
1974 int h;
1975
1976 ret = sscanf (p + 6, " %d", &h);
1977 if (ret != 1) {
1978 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1979 }
1980 if (h != state.sliceheight) {
1981 int i;
1982
1983 state.sliceheight = h;
1984 for (i = 0; i < state.texcount; ++i) {
1985 state.texowners[i].w = -1;
1986 state.texowners[i].h = -1;
1987 state.texowners[i].slice = NULL;
1988 }
1989 }
1990 }
1991 else if (!strncmp ("interrupt", p, 9)) {
1992 printd ("vmsg interrupted");
1993 }
1994 else {
1995 errx (1, "unknown command %.*s", len, p);
1996 }
1997 }
1998 return 0;
1999 }
2000
2001 CAMLprim value ml_realloctexts (value texcount_v)
2002 {
2003 CAMLparam1 (texcount_v);
2004 int ok;
2005
2006 if (trylock ("ml_realloctexts")) {
2007 ok = 0;
2008 goto done;
2009 }
2010 realloctexts (Int_val (texcount_v));
2011 ok = 1;
2012 unlock ("ml_realloctexts");
2013
2014 done:
2015 CAMLreturn (Val_bool (ok));
2016 }
2017
2018 static void showsel (struct page *page, int ox, int oy)
2019 {
2020 int seen = 0;
2021 fz_irect bbox;
2022 fz_rect rect;
2023 fz_text_line *line;
2024 fz_page_block *pageb;
2025 fz_text_block *block;
2026 struct mark first, last;
2027
2028 first = page->fmark;
2029 last = page->lmark;
2030
2031 if (!first.span || !last.span) return;
2032
2033 glEnable (GL_BLEND);
2034 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
2035 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
2036
2037 ox += state.pagedims[page->pdimno].bounds.x0;
2038 oy += state.pagedims[page->pdimno].bounds.y0;
2039 for (pageb = page->text->blocks;
2040 pageb < page->text->blocks + page->text->len;
2041 ++pageb) {
2042 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2043 block = pageb->u.text;
2044
2045 for (line = block->lines;
2046 line < block->lines + block->len;
2047 ++line) {
2048 fz_text_span *span;
2049 rect = fz_empty_rect;
2050
2051 for (span = line->first_span; span; span = span->next) {
2052 int i, j, k;
2053 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
2054
2055 j = 0;
2056 k = span->len - 1;
2057
2058 if (span == page->fmark.span && span == page->lmark.span) {
2059 seen = 1;
2060 j = MIN (first.i, last.i);
2061 k = MAX (first.i, last.i);
2062 }
2063 else if (span == first.span) {
2064 seen = 1;
2065 j = first.i;
2066 }
2067 else if (span == last.span) {
2068 seen = 1;
2069 k = last.i;
2070 }
2071
2072 if (seen) {
2073 for (i = j; i <= k; ++i) {
2074 fz_rect bbox;
2075 fz_union_rect (&rect,
2076 fz_text_char_bbox (&bbox, span, i));
2077 }
2078 fz_round_rect (&bbox, &rect);
2079 lprintf ("%d %d %d %d oy=%d ox=%d\n",
2080 bbox.x0,
2081 bbox.y0,
2082 bbox.x1,
2083 bbox.y1,
2084 oy, ox);
2085
2086 glRecti (bbox.x0 + ox, bbox.y0 + oy,
2087 bbox.x1 + ox, bbox.y1 + oy);
2088 if (span == last.span) {
2089 goto done;
2090 }
2091 }
2092 }
2093 }
2094 }
2095 done:
2096 glDisable (GL_BLEND);
2097 }
2098
2099 #include "glfont.c"
2100
2101 static void highlightlinks (struct page *page, int xoff, int yoff)
2102 {
2103 fz_matrix ctm, tm, pm;
2104 fz_link *link, *links;
2105
2106 switch (page->type) {
2107 case DPDF:
2108 links = page->u.pdfpage->links;
2109 break;
2110
2111 case DXPS:
2112 links = page->u.xpspage->links;
2113 break;
2114
2115 default:
2116 return;
2117 }
2118
2119 glEnable (GL_TEXTURE_1D);
2120 glEnable (GL_BLEND);
2121 glBindTexture (GL_TEXTURE_1D, state.stid);
2122
2123 xoff -= state.pagedims[page->pdimno].bounds.x0;
2124 yoff -= state.pagedims[page->pdimno].bounds.y0;
2125 fz_translate (&tm, xoff, yoff);
2126 pm = pagectm (page);
2127 fz_concat (&ctm, &pm, &tm);
2128
2129 glBegin (GL_LINES);
2130 for (link = links; link; link = link->next) {
2131 fz_point p1, p2, p3, p4;
2132
2133 p1.x = link->rect.x0;
2134 p1.y = link->rect.y0;
2135
2136 p2.x = link->rect.x1;
2137 p2.y = link->rect.y0;
2138
2139 p3.x = link->rect.x1;
2140 p3.y = link->rect.y1;
2141
2142 p4.x = link->rect.x0;
2143 p4.y = link->rect.y1;
2144
2145 fz_transform_point (&p1, &ctm);
2146 fz_transform_point (&p2, &ctm);
2147 fz_transform_point (&p3, &ctm);
2148 fz_transform_point (&p4, &ctm);
2149
2150 switch (link->dest.kind) {
2151 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2152 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2153 case FZ_LINK_LAUNCH: glColor3ub (0, 255, 0); break;
2154 default: glColor3ub (0, 0, 0); break;
2155 }
2156
2157 {
2158 float w, h, s, t;
2159
2160 w = p2.x - p1.x;
2161 h = p2.y - p1.y;
2162 t = sqrtf (w*w + h*h) * .25f;
2163
2164 w = p3.x - p2.x;
2165 h = p3.y - p2.y;
2166 s = sqrtf (w*w + h*h) * .25f;
2167
2168 glTexCoord1i (0);
2169 glVertex2f (p1.x, p1.y);
2170 glTexCoord1f (t);
2171 glVertex2f (p2.x, p2.y);
2172
2173 glTexCoord1i (0);
2174 glVertex2f (p2.x, p2.y);
2175 glTexCoord1f (s);
2176 glVertex2f (p3.x, p3.y);
2177
2178 glTexCoord1i (0);
2179 glVertex2f (p3.x, p3.y);
2180 glTexCoord1f (t);
2181 glVertex2f (p4.x, p4.y);
2182
2183 glTexCoord1i (0);
2184 glVertex2f (p4.x, p4.y);
2185 glTexCoord1f (s);
2186 glVertex2f (p1.x, p1.y);
2187 }
2188 }
2189 glEnd ();
2190
2191 glDisable (GL_BLEND);
2192 glDisable (GL_TEXTURE_1D);
2193 }
2194
2195 static int compareslinks (const void *l, const void *r)
2196 {
2197 struct slink const *ls = l;
2198 struct slink const *rs = r;
2199 if (ls->bbox.y0 == rs->bbox.y0) {
2200 return rs->bbox.x0 - rs->bbox.x0;
2201 }
2202 return ls->bbox.y0 - rs->bbox.y0;
2203 }
2204
2205 static void droptext (struct page *page)
2206 {
2207 if (page->text) {
2208 fz_free_text_page (state.ctx, page->text);
2209 page->fmark.i = -1;
2210 page->lmark.i = -1;
2211 page->fmark.span = NULL;
2212 page->lmark.span = NULL;
2213 page->text = NULL;
2214 }
2215 if (page->sheet) {
2216 fz_free_text_sheet (state.ctx, page->sheet);
2217 page->sheet = NULL;
2218 }
2219 }
2220
2221 static void dropslinks (struct page *page)
2222 {
2223 if (page->slinks) {
2224 free (page->slinks);
2225 page->slinks = NULL;
2226 page->slinkcount = 0;
2227 }
2228 }
2229
2230 static void ensureslinks (struct page *page)
2231 {
2232 fz_matrix ctm;
2233 int i, count = 0;
2234 size_t slinksize = sizeof (*page->slinks);
2235 fz_link *link, *links;
2236
2237 if (state.gen != page->sgen) {
2238 dropslinks (page);
2239 page->sgen = state.gen;
2240 }
2241 if (page->slinks) return;
2242
2243 switch (page->type) {
2244 case DPDF:
2245 links = page->u.pdfpage->links;
2246 trimctm (page->u.pdfpage, page->pdimno);
2247 fz_concat (&ctm,
2248 &state.pagedims[page->pdimno].tctm,
2249 &state.pagedims[page->pdimno].ctm);
2250 break;
2251
2252 case DXPS:
2253 links = page->u.xpspage->links;
2254 ctm = state.pagedims[page->pdimno].ctm;
2255 break;
2256
2257 default:
2258 return;
2259 }
2260
2261 for (link = links; link; link = link->next) {
2262 count++;
2263 }
2264 if (count > 0) {
2265 page->slinkcount = count;
2266 page->slinks = calloc (count, slinksize);
2267 if (!page->slinks) {
2268 err (1, "realloc slinks %d", count);
2269 }
2270
2271 for (i = 0, link = links; link; ++i, link = link->next) {
2272 fz_rect rect;
2273
2274 rect = link->rect;
2275 fz_transform_rect (&rect, &ctm);
2276 page->slinks[i].link = link;
2277 fz_round_rect (&page->slinks[i].bbox, &rect);
2278 }
2279 qsort (page->slinks, count, slinksize, compareslinks);
2280 }
2281 }
2282
2283 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2284 static void fmt_linkn (char *s, unsigned int u)
2285 {
2286 unsigned int len; unsigned int q;
2287 int zma = 'z' - 'a' + 1;
2288 len = 1; q = u;
2289 while (q > zma - 1) { ++len; q /= zma; }
2290 if (s) {
2291 s += len;
2292 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2293 /* handles u == 0 */
2294 }
2295 s[len] = 0;
2296 }
2297
2298 static void highlightslinks (struct page *page, int xoff, int yoff,
2299 int noff, char *targ, int tlen, int hfsize)
2300 {
2301 int i;
2302 char buf[40];
2303 struct slink *slink;
2304 double x0, y0, x1, y1, w;
2305
2306 ensureslinks (page);
2307 glColor3ub (0xc3, 0xb0, 0x91);
2308 for (i = 0; i < page->slinkcount; ++i) {
2309 fmt_linkn (buf, i + noff);
2310 if (!tlen || !strncmp (targ, buf, tlen)) {
2311 slink = &page->slinks[i];
2312
2313 x0 = slink->bbox.x0 + xoff - 5;
2314 y1 = slink->bbox.y0 + yoff - 5;
2315 y0 = y1 + 10 + hfsize;
2316 w = measure_string (state.face, hfsize, buf);
2317 x1 = x0 + w + 10;
2318 glRectd (x0, y0, x1, y1);
2319 }
2320 }
2321
2322 glEnable (GL_BLEND);
2323 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2324 glEnable (GL_TEXTURE_2D);
2325 glColor3ub (0, 0, 0);
2326 for (i = 0; i < page->slinkcount; ++i) {
2327 fmt_linkn (buf, i + noff);
2328 if (!tlen || !strncmp (targ, buf, tlen)) {
2329 slink = &page->slinks[i];
2330
2331 x0 = slink->bbox.x0 + xoff;
2332 y0 = slink->bbox.y0 + yoff + hfsize;
2333 draw_string (state.face, hfsize, x0, y0, buf);
2334 }
2335 }
2336 glDisable (GL_TEXTURE_2D);
2337 glDisable (GL_BLEND);
2338 }
2339
2340
2341 static void uploadslice (struct tile *tile, struct slice *slice)
2342 {
2343 int offset;
2344 struct slice *slice1;
2345 unsigned char *texdata;
2346
2347 offset = 0;
2348 for (slice1 = tile->slices; slice != slice1; slice1++) {
2349 offset += slice1->h * tile->w * tile->pixmap->n;
2350 }
2351 if (slice->texindex != -1 && slice->texindex < state.texcount
2352 && state.texowners[slice->texindex].slice == slice) {
2353 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2354 }
2355 else {
2356 int subimage = 0;
2357 int texindex = state.texindex++ % state.texcount;
2358
2359 if (state.texowners[texindex].w == tile->w) {
2360 if (state.texowners[texindex].h >= slice->h) {
2361 subimage = 1;
2362 }
2363 else {
2364 state.texowners[texindex].h = slice->h;
2365 }
2366 }
2367 else {
2368 state.texowners[texindex].h = slice->h;
2369 }
2370
2371 state.texowners[texindex].w = tile->w;
2372 state.texowners[texindex].slice = slice;
2373 slice->texindex = texindex;
2374
2375 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2376 if (tile->pbo) {
2377 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2378 texdata = 0;
2379 }
2380 else {
2381 texdata = tile->pixmap->samples;
2382 }
2383 if (subimage) {
2384 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2385 0,
2386 0,
2387 0,
2388 tile->w,
2389 slice->h,
2390 state.texform,
2391 state.texty,
2392 texdata+offset
2393 );
2394 }
2395 else {
2396 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2397 0,
2398 state.texiform,
2399 tile->w,
2400 slice->h,
2401 0,
2402 state.texform,
2403 state.texty,
2404 texdata+offset
2405 );
2406 }
2407 if (tile->pbo) {
2408 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2409 }
2410 }
2411 }
2412
2413 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2414 {
2415 CAMLparam2 (args_v, ptr_v);
2416 int dispx = Int_val (Field (args_v, 0));
2417 int dispy = Int_val (Field (args_v, 1));
2418 int dispw = Int_val (Field (args_v, 2));
2419 int disph = Int_val (Field (args_v, 3));
2420 int tilex = Int_val (Field (args_v, 4));
2421 int tiley = Int_val (Field (args_v, 5));
2422 char *s = String_val (ptr_v);
2423 struct tile *tile = parse_pointer ("ml_drawtile", s);
2424
2425 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2426 {
2427 int slicey, firstslice;
2428 struct slice *slice;
2429
2430 firstslice = tiley / tile->sliceheight;
2431 slice = &tile->slices[firstslice];
2432 slicey = tiley % tile->sliceheight;
2433
2434 while (disph > 0) {
2435 int dh;
2436
2437 dh = slice->h - slicey;
2438 dh = MIN (disph, dh);
2439 uploadslice (tile, slice);
2440
2441 glBegin (GL_QUADS);
2442 {
2443 glTexCoord2i (tilex, slicey);
2444 glVertex2i (dispx, dispy);
2445
2446 glTexCoord2i (tilex+dispw, slicey);
2447 glVertex2i (dispx+dispw, dispy);
2448
2449 glTexCoord2i (tilex+dispw, slicey+dh);
2450 glVertex2i (dispx+dispw, dispy+dh);
2451
2452 glTexCoord2i (tilex, slicey+dh);
2453 glVertex2i (dispx, dispy+dh);
2454 }
2455 glEnd ();
2456
2457 dispy += dh;
2458 disph -= dh;
2459 slice++;
2460 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2461 slicey = 0;
2462 }
2463 }
2464 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2465 CAMLreturn (Val_unit);
2466 }
2467
2468 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2469 value xoff_v, value yoff_v,
2470 value li_v)
2471 {
2472 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2473 int xoff = Int_val (xoff_v);
2474 int yoff = Int_val (yoff_v);
2475 int noff = Int_val (Field (li_v, 0));
2476 char *targ = String_val (Field (li_v, 1));
2477 int tlen = caml_string_length (Field (li_v, 1));
2478 int hfsize = Int_val (Field (li_v, 2));
2479 char *s = String_val (ptr_v);
2480 int hlmask = Int_val (hlinks_v);
2481 struct page *page = parse_pointer ("ml_postprocess", s);
2482
2483 if (!page->u.ptr) {
2484 /* deal with loadpage failed pages */
2485 goto done;
2486 }
2487
2488 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2489 if (trylock ("ml_postprocess")) {
2490 noff = 0;
2491 goto done;
2492 }
2493 if (hlmask & 2) {
2494 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2495 noff = page->slinkcount;
2496 }
2497 if (page->tgen == state.gen) {
2498 showsel (page, xoff, yoff);
2499 }
2500 unlock ("ml_postprocess");
2501
2502 done:
2503 CAMLreturn (Val_int (noff));
2504 }
2505
2506 static fz_link *getlink (struct page *page, int x, int y)
2507 {
2508 fz_point p;
2509 fz_matrix ctm;
2510 const fz_matrix *tctm;
2511 fz_link *link, *links;
2512
2513 switch (page->type) {
2514 case DPDF:
2515 trimctm (page->u.pdfpage, page->pdimno);
2516 tctm = &state.pagedims[page->pdimno].tctm;
2517 links = page->u.pdfpage->links;
2518 break;
2519
2520 case DXPS:
2521 tctm = &fz_identity;
2522 links = page->u.xpspage->links;
2523 break;
2524
2525 default:
2526 return NULL;
2527 }
2528 p.x = x;
2529 p.y = y;
2530
2531 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2532 fz_invert_matrix (&ctm, &ctm);
2533 fz_transform_point (&p, &ctm);
2534
2535 for (link = links; link; link = link->next) {
2536 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2537 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2538 return link;
2539 }
2540 }
2541 }
2542 return NULL;
2543 }
2544
2545 static void ensuretext (struct page *page)
2546 {
2547 if (state.gen != page->tgen) {
2548 droptext (page);
2549 page->tgen = state.gen;
2550 }
2551 if (!page->text) {
2552 fz_matrix ctm;
2553 fz_device *tdev;
2554
2555 page->text = fz_new_text_page (state.ctx);
2556 page->sheet = fz_new_text_sheet (state.ctx);
2557 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2558 ctm = pagectm (page);
2559 fz_begin_page (tdev, &fz_infinite_rect, &ctm);
2560 fz_run_display_list (page->dlist, tdev, &ctm, &fz_infinite_rect, NULL);
2561 qsort (page->text->blocks, page->text->len,
2562 sizeof (*page->text->blocks), compareblocks);
2563 fz_end_page (tdev);
2564 fz_free_device (tdev);
2565 }
2566 }
2567
2568 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2569 {
2570 CAMLparam2 (start_page_v, dir_v);
2571 CAMLlocal1 (ret_v);
2572 int i, dir = Int_val (dir_v);
2573 int start_page = Int_val (start_page_v);
2574 int end_page = dir > 0 ? state.pagecount : -1;
2575
2576 ret_v = Val_int (0);
2577 if (!(state.type == DPDF || state.type == DXPS)) {
2578 goto done;
2579 }
2580
2581 lock ("ml_findpage_with_links");
2582 for (i = start_page + dir; i != end_page; i += dir) {
2583 int found;
2584
2585 switch (state.type) {
2586 case DPDF:
2587 {
2588 pdf_page *page = NULL;
2589
2590 fz_try (state.ctx) {
2591 page = pdf_load_page (state.u.pdf, i);
2592 found = !!page->links;
2593 }
2594 fz_catch (state.ctx) {
2595 found = 0;
2596 }
2597 if (page) {
2598 freepdfpage (page);
2599 }
2600 }
2601 break;
2602 case DXPS:
2603 {
2604 xps_page *page = xps_load_page (state.u.xps, i);
2605 found = !!page->links;
2606 freexpspage (page);
2607 }
2608 break;
2609
2610 default:
2611 ARSERT (0 && "invalid document type");
2612 }
2613
2614 if (found) {
2615 ret_v = caml_alloc_small (1, 1);
2616 Field (ret_v, 0) = Val_int (i);
2617 goto unlock;
2618 }
2619 }
2620 unlock:
2621 unlock ("ml_findpage_with_links");
2622
2623 done:
2624 CAMLreturn (ret_v);
2625 }
2626
2627 enum { dir_first, dir_last};
2628 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2629
2630 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2631 {
2632 CAMLparam2 (ptr_v, dir_v);
2633 CAMLlocal2 (ret_v, pos_v);
2634 struct page *page;
2635 int dirtag, i, slinkindex;
2636 struct slink *found = NULL ,*slink;
2637 char *s = String_val (ptr_v);
2638
2639 page = parse_pointer ("ml_findlink", s);
2640 ret_v = Val_int (0);
2641 if (trylock ("ml_findlink")) {
2642 goto done;
2643 }
2644
2645 ensureslinks (page);
2646
2647 if (Is_block (dir_v)) {
2648 dirtag = Tag_val (dir_v);
2649 switch (dirtag) {
2650 case dir_first_visible:
2651 {
2652 int x0, y0, dir, first_index, last_index;
2653
2654 pos_v = Field (dir_v, 0);
2655 x0 = Int_val (Field (pos_v, 0));
2656 y0 = Int_val (Field (pos_v, 1));
2657 dir = Int_val (Field (pos_v, 2));
2658
2659 if (dir >= 0) {
2660 dir = 1;
2661 first_index = 0;
2662 last_index = page->slinkcount;
2663 }
2664 else {
2665 first_index = page->slinkcount - 1;
2666 last_index = -1;
2667 }
2668
2669 for (i = first_index; i != last_index; i += dir) {
2670 slink = &page->slinks[i];
2671 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2672 found = slink;
2673 break;
2674 }
2675 }
2676 }
2677 break;
2678
2679 case dir_left:
2680 slinkindex = Int_val (Field (dir_v, 0));
2681 found = &page->slinks[slinkindex];
2682 for (i = slinkindex - 1; i >= 0; --i) {
2683 slink = &page->slinks[i];
2684 if (slink->bbox.x0 < found->bbox.x0) {
2685 found = slink;
2686 break;
2687 }
2688 }
2689 break;
2690
2691 case dir_right:
2692 slinkindex = Int_val (Field (dir_v, 0));
2693 found = &page->slinks[slinkindex];
2694 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2695 slink = &page->slinks[i];
2696 if (slink->bbox.x0 > found->bbox.x0) {
2697 found = slink;
2698 break;
2699 }
2700 }
2701 break;
2702
2703 case dir_down:
2704 slinkindex = Int_val (Field (dir_v, 0));
2705 found = &page->slinks[slinkindex];
2706 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2707 slink = &page->slinks[i];
2708 if (slink->bbox.y0 >= found->bbox.y0) {
2709 found = slink;
2710 break;
2711 }
2712 }
2713 break;
2714
2715 case dir_up:
2716 slinkindex = Int_val (Field (dir_v, 0));
2717 found = &page->slinks[slinkindex];
2718 for (i = slinkindex - 1; i >= 0; --i) {
2719 slink = &page->slinks[i];
2720 if (slink->bbox.y0 <= found->bbox.y0) {
2721 found = slink;
2722 break;
2723 }
2724 }
2725 break;
2726 }
2727 }
2728 else {
2729 dirtag = Int_val (dir_v);
2730 switch (dirtag) {
2731 case dir_first:
2732 found = page->slinks;
2733 break;
2734
2735 case dir_last:
2736 if (page->slinks) {
2737 found = page->slinks + (page->slinkcount - 1);
2738 }
2739 break;
2740 }
2741 }
2742 if (found) {
2743 ret_v = caml_alloc_small (2, 1);
2744 Field (ret_v, 0) = Val_int (found - page->slinks);
2745 }
2746
2747 unlock ("ml_findlink");
2748 done:
2749 CAMLreturn (ret_v);
2750 }
2751
2752 enum { uuri, ugoto, utext, uunexpected,
2753 ulaunch, unamed, uremote, uremotedest };
2754
2755 #define LINKTOVAL \
2756 { \
2757 int pageno; \
2758 \
2759 switch (link->dest.kind) { \
2760 case FZ_LINK_GOTO: \
2761 { \
2762 fz_point p; \
2763 \
2764 pageno = link->dest.ld.gotor.page; \
2765 p.x = 0; \
2766 p.y = 0; \
2767 \
2768 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2769 p.y = link->dest.ld.gotor.lt.y; \
2770 fz_transform_point (&p, &pdim->lctm); \
2771 } \
2772 tup_v = caml_alloc_tuple (2); \
2773 ret_v = caml_alloc_small (1, ugoto); \
2774 Field (tup_v, 0) = Val_int (pageno); \
2775 Field (tup_v, 1) = Val_int (p.y); \
2776 Field (ret_v, 0) = tup_v; \
2777 } \
2778 break; \
2779 \
2780 case FZ_LINK_URI: \
2781 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2782 ret_v = caml_alloc_small (1, uuri); \
2783 Field (ret_v, 0) = str_v; \
2784 break; \
2785 \
2786 case FZ_LINK_LAUNCH: \
2787 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2788 ret_v = caml_alloc_small (1, ulaunch); \
2789 Field (ret_v, 0) = str_v; \
2790 break; \
2791 \
2792 case FZ_LINK_NAMED: \
2793 str_v = caml_copy_string (link->dest.ld.named.named); \
2794 ret_v = caml_alloc_small (1, unamed); \
2795 Field (ret_v, 0) = str_v; \
2796 break; \
2797 \
2798 case FZ_LINK_GOTOR: \
2799 { \
2800 int rty; \
2801 \
2802 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2803 pageno = link->dest.ld.gotor.page; \
2804 if (pageno == -1) { \
2805 gr_v = caml_copy_string (link->dest.ld.gotor.dest); \
2806 rty = uremotedest; \
2807 } \
2808 else { \
2809 gr_v = Val_int (pageno); \
2810 rty = uremote; \
2811 } \
2812 tup_v = caml_alloc_tuple (2); \
2813 ret_v = caml_alloc_small (1, rty); \
2814 Field (tup_v, 0) = str_v; \
2815 Field (tup_v, 1) = gr_v; \
2816 Field (ret_v, 0) = tup_v; \
2817 } \
2818 break; \
2819 \
2820 default: \
2821 { \
2822 char buf[80]; \
2823 \
2824 snprintf (buf, sizeof (buf), \
2825 "unhandled link kind %d", link->dest.kind); \
2826 str_v = caml_copy_string (buf); \
2827 ret_v = caml_alloc_small (1, uunexpected); \
2828 Field (ret_v, 0) = str_v; \
2829 } \
2830 break; \
2831 } \
2832 }
2833
2834 CAMLprim value ml_getlink (value ptr_v, value n_v)
2835 {
2836 CAMLparam2 (ptr_v, n_v);
2837 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
2838 fz_link *link;
2839 struct page *page;
2840 struct pagedim *pdim;
2841 char *s = String_val (ptr_v);
2842
2843 ret_v = Val_int (0);
2844 if (trylock ("ml_getlink")) {
2845 goto done;
2846 }
2847
2848 page = parse_pointer ("ml_getlink", s);
2849 ensureslinks (page);
2850 pdim = &state.pagedims[page->pdimno];
2851 link = page->slinks[Int_val (n_v)].link;
2852 LINKTOVAL;
2853
2854 unlock ("ml_getlink");
2855 done:
2856 CAMLreturn (ret_v);
2857 }
2858
2859 CAMLprim value ml_getlinkcount (value ptr_v)
2860 {
2861 CAMLparam1 (ptr_v);
2862 struct page *page;
2863 char *s = String_val (ptr_v);
2864
2865 page = parse_pointer ("ml_getlinkcount", s);
2866 CAMLreturn (Val_int (page->slinkcount));
2867 }
2868
2869 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2870 {
2871 CAMLparam2 (ptr_v, n_v);
2872 CAMLlocal1 (ret_v);
2873 struct page *page;
2874 struct slink *slink;
2875 char *s = String_val (ptr_v);
2876
2877 page = parse_pointer ("ml_getlinkrect", s);
2878 ret_v = caml_alloc_tuple (4);
2879 if (trylock ("ml_getlinkrect")) {
2880 Field (ret_v, 0) = Val_int (0);
2881 Field (ret_v, 1) = Val_int (0);
2882 Field (ret_v, 2) = Val_int (0);
2883 Field (ret_v, 3) = Val_int (0);
2884 goto done;
2885 }
2886 ensureslinks (page);
2887
2888 slink = &page->slinks[Int_val (n_v)];
2889 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2890 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2891 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2892 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2893 unlock ("ml_getlinkrect");
2894
2895 done:
2896 CAMLreturn (ret_v);
2897 }
2898
2899 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2900 {
2901 CAMLparam3 (ptr_v, x_v, y_v);
2902 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
2903 fz_link *link;
2904 struct page *page;
2905 char *s = String_val (ptr_v);
2906 int x = Int_val (x_v), y = Int_val (y_v);
2907 struct pagedim *pdim;
2908
2909 ret_v = Val_int (0);
2910 if (trylock ("ml_whatsunder")) {
2911 goto done;
2912 }
2913
2914 page = parse_pointer ("ml_whatsunder", s);
2915 pdim = &state.pagedims[page->pdimno];
2916 x += pdim->bounds.x0;
2917 y += pdim->bounds.y0;
2918 link = getlink (page, x, y);
2919 if (link) {
2920 LINKTOVAL;
2921 }
2922 else {
2923 fz_rect *b;
2924 fz_page_block *pageb;
2925 fz_text_block *block;
2926
2927 ensuretext (page);
2928 for (pageb = page->text->blocks;
2929 pageb < page->text->blocks + page->text->len;
2930 ++pageb) {
2931 fz_text_line *line;
2932 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2933 block = pageb->u.text;
2934
2935 b = &block->bbox;
2936 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2937 continue;
2938
2939 for (line = block->lines;
2940 line < block->lines + block->len;
2941 ++line) {
2942 fz_text_span *span;
2943
2944 b = &line->bbox;
2945 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2946 continue;
2947
2948 for (span = line->first_span; span; span = span->next) {
2949 int charnum;
2950
2951 b = &span->bbox;
2952 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2953 continue;
2954
2955 for (charnum = 0; charnum < span->len; ++charnum) {
2956 fz_rect bbox;
2957 fz_text_char_bbox (&bbox, span, charnum);
2958 b = &bbox;
2959
2960 if (x >= b->x0 && x <= b->x1
2961 && y >= b->y0 && y <= b->y1) {
2962 fz_text_style *style = span->text->style;
2963 const char *n2 =
2964 style->font && style->font->name
2965 ? style->font->name
2966 : "Span has no font name"
2967 ;
2968 FT_FaceRec *face = style->font->ft_face;
2969 if (face && face->family_name) {
2970 char *s;
2971 char *n1 = face->family_name;
2972 size_t l1 = strlen (n1);
2973 size_t l2 = strlen (n2);
2974
2975 if (l1 != l2 || memcmp (n1, n2, l1)) {
2976 s = malloc (l1 + l2 + 2);
2977 if (s) {
2978 memcpy (s, n2, l2);
2979 s[l2] = '=';
2980 memcpy (s + l2 + 1, n1, l1 + 1);
2981 str_v = caml_copy_string (s);
2982 free (s);
2983 }
2984 }
2985 }
2986 if (str_v == 0) {
2987 str_v = caml_copy_string (n2);
2988 }
2989 ret_v = caml_alloc_small (1, utext);
2990 Field (ret_v, 0) = str_v;
2991 goto unlock;
2992 }
2993 }
2994 }
2995 }
2996 }
2997 }
2998 unlock:
2999 unlock ("ml_whatsunder");
3000
3001 done:
3002 CAMLreturn (ret_v);
3003 }
3004
3005 enum { mark_page, mark_block, mark_line, mark_word };
3006
3007 static int uninteresting (int c)
3008 {
3009 return c == ' ' || c == '\n' || c == '\t' || c == '\n' || c == '\r'
3010 || ispunct (c);
3011 }
3012
3013 CAMLprim value ml_clearmark (value ptr_v)
3014 {
3015 CAMLparam1 (ptr_v);
3016 char *s = String_val (ptr_v);
3017 struct page *page;
3018
3019 if (trylock ("ml_clearmark")) {
3020 goto done;
3021 }
3022
3023 page = parse_pointer ("ml_clearmark", s);
3024 page->fmark.span = NULL;
3025 page->lmark.span = NULL;
3026 page->fmark.i = 0;
3027 page->lmark.i = 0;
3028
3029 unlock ("ml_clearmark");
3030 done:
3031 CAMLreturn (Val_unit);
3032 }
3033
3034 CAMLprim value ml_markunder (value ptr_v, value x_v, value y_v, value mark_v)
3035 {
3036 CAMLparam4 (ptr_v, x_v, y_v, mark_v);
3037 CAMLlocal1 (ret_v);
3038 fz_rect *b;
3039 struct page *page;
3040 fz_text_line *line;
3041 fz_page_block *pageb;
3042 fz_text_block *block;
3043 struct pagedim *pdim;
3044 int mark = Int_val (mark_v);
3045 char *s = String_val (ptr_v);
3046 int x = Int_val (x_v), y = Int_val (y_v);
3047
3048 ret_v = Val_bool (0);
3049 if (trylock ("ml_markunder")) {
3050 goto done;
3051 }
3052
3053 page = parse_pointer ("ml_markunder", s);
3054 pdim = &state.pagedims[page->pdimno];
3055
3056 ensuretext (page);
3057
3058 if (mark == mark_page) {
3059 int i;
3060 fz_page_block *pb1 = NULL, *pb2 = NULL;
3061
3062 for (i = 0; i < page->text->len; ++i) {
3063 if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
3064 pb1 = &page->text->blocks[i];
3065 break;
3066 }
3067 }
3068 if (!pb1) goto unlock;
3069
3070 for (i = page->text->len - 1; i >= 0; --i) {
3071 if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
3072 pb2 = &page->text->blocks[i];
3073 break;
3074 }
3075 }
3076 if (!pb2) goto unlock;
3077
3078 block = pb1->u.text;
3079
3080 page->fmark.i = 0;
3081 page->fmark.span = block->lines->first_span;
3082
3083 block = pb2->u.text;
3084 line = &block->lines[block->len - 1];
3085 page->lmark.i = line->last_span->len - 1;
3086 page->lmark.span = line->last_span;
3087 ret_v = Val_bool (1);
3088 goto unlock;
3089 }
3090
3091 x += pdim->bounds.x0;
3092 y += pdim->bounds.y0;
3093
3094 for (pageb = page->text->blocks;
3095 pageb < page->text->blocks + page->text->len;
3096 ++pageb) {
3097 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3098 block = pageb->u.text;
3099
3100 b = &block->bbox;
3101 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3102 continue;
3103
3104 if (mark == mark_block) {
3105 page->fmark.i = 0;
3106 page->fmark.span = block->lines->first_span;
3107
3108 line = &block->lines[block->len - 1];
3109 page->lmark.i = line->last_span->len - 1;
3110 page->lmark.span = line->last_span;
3111 ret_v = Val_bool (1);
3112 goto unlock;
3113 }
3114
3115 for (line = block->lines;
3116 line < block->lines + block->len;
3117 ++line) {
3118 fz_text_span *span;
3119
3120 b = &line->bbox;
3121 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3122 continue;
3123
3124 if (mark == mark_line) {
3125 page->fmark.i = 0;
3126 page->fmark.span = line->first_span;
3127
3128 page->lmark.i = line->last_span->len - 1;
3129 page->lmark.span = line->last_span;
3130 ret_v = Val_bool (1);
3131 goto unlock;
3132 }
3133
3134 for (span = line->first_span; span; span = span->next) {
3135 int charnum;
3136
3137 b = &span->bbox;
3138 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3139 continue;
3140
3141 for (charnum = 0; charnum < span->len; ++charnum) {
3142 fz_rect bbox;
3143 fz_text_char_bbox (&bbox, span, charnum);
3144 b = &bbox;
3145
3146 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1) {
3147 /* unicode ftw */
3148 int charnum2, charnum3 = -1, charnum4 = -1;
3149
3150 if (uninteresting (span->text[charnum].c)) goto unlock;
3151
3152 for (charnum2 = charnum; charnum2 >= 0; --charnum2) {
3153 if (uninteresting (span->text[charnum2].c)) {
3154 charnum3 = charnum2 + 1;
3155 break;
3156 }
3157 }
3158 if (charnum3 == -1) charnum3 = 0;
3159
3160 for (charnum2 = charnum + 1;
3161 charnum2 < span->len;
3162 ++charnum2) {
3163 if (uninteresting (span->text[charnum2].c)) break;
3164 charnum4 = charnum2;
3165 }
3166 if (charnum4 == -1) goto unlock;
3167
3168 page->fmark.i = charnum3;
3169 page->fmark.span = span;
3170
3171 page->lmark.i = charnum4;
3172 page->lmark.span = span;
3173 ret_v = Val_bool (1);
3174 goto unlock;
3175 }
3176 }
3177 }
3178 }
3179 }
3180 unlock:
3181 if (!Bool_val (ret_v)) {
3182 page->fmark.span = NULL;
3183 page->lmark.span = NULL;
3184 page->fmark.i = 0;
3185 page->lmark.i = 0;
3186 }
3187 unlock ("ml_markunder");
3188
3189 done:
3190 CAMLreturn (ret_v);
3191 }
3192
3193 CAMLprim value ml_rectofblock (value ptr_v, value x_v, value y_v)
3194 {
3195 CAMLparam3 (ptr_v, x_v, y_v);
3196 CAMLlocal2 (ret_v, res_v);
3197 fz_rect *b = NULL;
3198 struct page *page;
3199 fz_page_block *pageb;
3200 struct pagedim *pdim;
3201 char *s = String_val (ptr_v);
3202 int x = Int_val (x_v), y = Int_val (y_v);
3203
3204 ret_v = Val_int (0);
3205 if (trylock ("ml_rectofblock")) {
3206 goto done;
3207 }
3208
3209 page = parse_pointer ("ml_rectofblock", s);
3210 pdim = &state.pagedims[page->pdimno];
3211 x += pdim->bounds.x0;
3212 y += pdim->bounds.y0;
3213
3214 ensuretext (page);
3215
3216 for (pageb = page->text->blocks;
3217 pageb < page->text->blocks + page->text->len;
3218 ++pageb) {
3219 switch (pageb->type) {
3220 case FZ_PAGE_BLOCK_TEXT:
3221 b = &pageb->u.text->bbox;
3222 break;
3223
3224 case FZ_PAGE_BLOCK_IMAGE:
3225 b = &pageb->u.image->bbox;
3226 break;
3227
3228 default:
3229 continue;
3230 }
3231
3232 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1)
3233 break;
3234 b = NULL;
3235 }
3236 if (b) {
3237 res_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3238 ret_v = caml_alloc_small (1, 1);
3239 Store_double_field (res_v, 0, b->x0);
3240 Store_double_field (res_v, 1, b->x1);
3241 Store_double_field (res_v, 2, b->y0);
3242 Store_double_field (res_v, 3, b->y1);
3243 Field (ret_v, 0) = res_v;
3244 }
3245 unlock ("ml_rectofblock");
3246
3247 done:
3248 CAMLreturn (ret_v);
3249 }
3250
3251 CAMLprim value ml_seltext (value ptr_v, value rect_v)
3252 {
3253 CAMLparam2 (ptr_v, rect_v);
3254 fz_rect b;
3255 struct page *page;
3256 struct pagedim *pdim;
3257 int i, x0, x1, y0, y1;
3258 char *s = String_val (ptr_v);
3259 int fi = 0, li = 0;
3260 fz_page_block *pageb;
3261 fz_text_block *block;
3262 fz_text_span *span, *fspan, *lspan;
3263 fz_text_line *line, *fline = NULL, *lline = NULL;
3264
3265 if (trylock ("ml_seltext")) {
3266 goto done;
3267 }
3268
3269 page = parse_pointer ("ml_seltext", s);
3270 ensuretext (page);
3271
3272 pdim = &state.pagedims[page->pdimno];
3273 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
3274 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
3275 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
3276 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
3277
3278 if (0) {
3279 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3280 glColor3ub (128, 128, 128);
3281 glRecti (x0, y0, x1, y1);
3282 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3283 }
3284
3285 fspan = lspan = NULL;
3286
3287 for (pageb= page->text->blocks;
3288 pageb < page->text->blocks + page->text->len;
3289 ++pageb) {
3290 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3291 block = pageb->u.text;
3292 for (line = block->lines;
3293 line < block->lines + block->len;
3294 ++line) {
3295 fz_text_span *span;
3296
3297 for (span = line->first_span; span; span = span->next) {
3298 for (i = 0; i < span->len; ++i) {
3299 int selected = 0;
3300
3301 fz_text_char_bbox (&b, span, i);
3302
3303 if (x0 >= b.x0 && x0 <= b.x1
3304 && y0 >= b.y0 && y0 <= b.y1) {
3305 fspan = span;
3306 fline = line;
3307 fi = i;
3308 selected = 1;
3309 }
3310 if (x1 >= b.x0 && x1 <= b.x1
3311 && y1 >= b.y0 && y1 <= b.y1) {
3312 lspan = span;
3313 lline = line;
3314 li = i;
3315 selected = 1;
3316 }
3317 if (0 && selected) {
3318 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3319 glColor3ub (128, 128, 128);
3320 glRecti (b.x0, b.y0, b.x1, b.y1);
3321 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3322 }
3323 }
3324 }
3325 }
3326 }
3327 if (y1 < y0 || x1 < x0) {
3328 int swap = 0;
3329
3330 if (fspan == lspan) {
3331 swap = 1;
3332 }
3333 else {
3334 if (y1 < y0) {
3335 if (fline != lline) {
3336 swap = 1;
3337 }
3338 }
3339 }
3340
3341 if (swap) {
3342 i = fi;
3343 span = fspan;
3344
3345 fi = li;
3346 fspan = lspan;
3347
3348 li = i;
3349 lspan = span;
3350 }
3351 }
3352
3353 page->fmark.i = fi;
3354 page->fmark.span = fspan;
3355
3356 page->lmark.i = li;
3357 page->lmark.span = lspan;
3358
3359 unlock ("ml_seltext");
3360
3361 done:
3362 CAMLreturn (Val_unit);
3363 }
3364
3365 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
3366 {
3367 char buf[4];
3368 int i, len, ret;
3369
3370 for (i = a; i <= b; ++i) {
3371 len = fz_runetochar (buf, span->text[i].c);
3372 ret = fwrite (buf, len, 1, f);
3373
3374 if (ret != 1) {
3375 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
3376 len, ret, strerror (errno));
3377 return -1;
3378 }
3379 }
3380 return 0;
3381 }
3382
3383 #ifdef __CYGWIN__
3384 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
3385 {
3386 caml_failwith ("ml_popen not implemented under Cygwin");
3387 }
3388 #else
3389 CAMLprim value ml_popen (value command_v, value fds_v)
3390 {
3391 CAMLparam2 (command_v, fds_v);
3392 CAMLlocal2 (l_v, tup_v);
3393 int ret;
3394 char *msg = NULL;
3395 value earg_v = Nothing;
3396 posix_spawnattr_t attr;
3397 posix_spawn_file_actions_t fa;
3398 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
3399
3400 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3401 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3402 }
3403
3404 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3405 msg = "posix_spawnattr_init";
3406 goto fail1;
3407 }
3408
3409 #ifdef POSIX_SPAWN_USEVFORK
3410 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3411 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3412 goto fail;
3413 }
3414 #endif
3415
3416 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3417 int fd1, fd2;
3418
3419 tup_v = Field (l_v, 0);
3420 fd1 = Int_val (Field (tup_v, 0));
3421 fd2 = Int_val (Field (tup_v, 1));
3422 if (fd2 < 0) {
3423 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3424 msg = "posix_spawn_file_actions_addclose";
3425 earg_v = tup_v;
3426 goto fail;
3427 }
3428 }
3429 else {
3430 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3431 msg = "posix_spawn_file_actions_adddup2";
3432 earg_v = tup_v;
3433 goto fail;
3434 }
3435 }
3436 }
3437
3438 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
3439 msg = "posix_spawn";
3440 goto fail;
3441 }
3442
3443 fail:
3444 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3445 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3446 }
3447
3448 fail1:
3449 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3450 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3451 strerror (ret));
3452 }
3453
3454 if (msg)
3455 unix_error (ret, msg, earg_v);
3456
3457 CAMLreturn (Val_unit);
3458 }
3459 #endif
3460
3461 CAMLprim value ml_copysel (value fd_v, value ptr_v, value clear_v)
3462 {
3463 CAMLparam3 (fd_v, ptr_v, clear_v);
3464 FILE *f;
3465 int seen = 0;
3466 struct page *page;
3467 fz_text_line *line;
3468 fz_page_block *pageb;
3469 fz_text_block *block;
3470 int fd = Int_val (fd_v);
3471 char *s = String_val (ptr_v);
3472 int clear = Bool_val (clear_v);
3473
3474 if (trylock ("ml_copysel")) {
3475 goto done;
3476 }
3477
3478 page = parse_pointer ("ml_sopysel", s);
3479
3480 if (!page->fmark.span || !page->lmark.span) {
3481 fprintf (stderr, "nothing to copy\n");
3482 goto unlock;
3483 }
3484
3485 f = fdopen (fd, "w");
3486 if (!f) {
3487 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3488 strerror (errno));
3489 f = stdout;
3490 }
3491
3492 for (pageb = page->text->blocks;
3493 pageb < page->text->blocks + page->text->len;
3494 ++pageb) {
3495 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3496 block = pageb->u.text;
3497 for (line = block->lines;
3498 line < block->lines + block->len;
3499 ++line) {
3500 fz_text_span *span;
3501
3502 for (span = line->first_span; span; span = span->next) {
3503 int a, b;
3504
3505 seen |= span == page->fmark.span || span == page->lmark.span;
3506 a = span == page->fmark.span ? page->fmark.i : 0;
3507 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3508
3509 if (seen) {
3510 if (pipespan (f, span, a, b)) {
3511 goto close;
3512 }
3513 if (span == line->last_span) {
3514 if (putc ('\n', f) == EOF) {
3515 fprintf (stderr,
3516 "failed break line on sel pipe: %s\n",
3517 strerror (errno));
3518 goto close;
3519 }
3520 }
3521 if (span == page->lmark.span) {
3522 goto endloop;
3523 }
3524 }
3525 }
3526 }
3527 }
3528 endloop:
3529 if (clear) {
3530 page->lmark.span = NULL;
3531 page->fmark.span = NULL;
3532 }
3533
3534 close:
3535 if (f != stdout) {
3536 int ret = fclose (f);
3537 fd = -1;
3538 if (ret == -1) {
3539 if (errno != ECHILD) {
3540 fprintf (stderr, "failed to close sel pipe: %s\n",
3541 strerror (errno));
3542 }
3543 }
3544 }
3545 unlock:
3546 unlock ("ml_copysel");
3547
3548 done:
3549 if (fd >= 0) {
3550 if (close (fd)) {
3551 fprintf (stderr, "failed to close sel pipe: %s\n",
3552 strerror (errno));
3553 }
3554 }
3555 CAMLreturn (Val_unit);
3556 }
3557
3558 CAMLprim value ml_getpdimrect (value pagedimno_v)
3559 {
3560 CAMLparam1 (pagedimno_v);
3561 CAMLlocal1 (ret_v);
3562 int pagedimno = Int_val (pagedimno_v);
3563 fz_rect box;
3564
3565 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3566 if (trylock ("ml_getpdimrect")) {
3567 box = fz_empty_rect;
3568 }
3569 else {
3570 box = state.pagedims[pagedimno].mediabox;
3571 unlock ("ml_getpdimrect");
3572 }
3573
3574 Store_double_field (ret_v, 0, box.x0);
3575 Store_double_field (ret_v, 1, box.x1);
3576 Store_double_field (ret_v, 2, box.y0);
3577 Store_double_field (ret_v, 3, box.y1);
3578
3579 CAMLreturn (ret_v);
3580 }
3581
3582 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3583 value dw_v, value cols_v)
3584 {
3585 CAMLparam3 (winw_v, winh_v, dw_v);
3586 CAMLlocal1 (ret_v);
3587 int i;
3588 double zoom = -1.;
3589 double maxh = 0.0;
3590 struct pagedim *p;
3591 double winw = Int_val (winw_v);
3592 double winh = Int_val (winh_v);
3593 double dw = Int_val (dw_v);
3594 double cols = Int_val (cols_v);
3595 double pw = 1.0, ph = 1.0;
3596
3597 if (trylock ("ml_zoom_for_height")) {
3598 goto done;
3599 }
3600
3601 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3602 double w = p->pagebox.x1 / cols;
3603 double h = p->pagebox.y1;
3604 if (h > maxh) {
3605 maxh = h;
3606 ph = h;
3607 if (state.fitmodel != FitProportional) pw = w;
3608 }
3609 if ((state.fitmodel == FitProportional) && w > pw) pw = w;
3610 }
3611
3612 zoom = (((winh / ph) * pw) + dw) / winw;
3613 unlock ("ml_zoom_for_height");
3614 done:
3615 ret_v = caml_copy_double (zoom);
3616 CAMLreturn (ret_v);
3617 }
3618
3619 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3620 {
3621 CAMLparam4 (pt_v, x_v, y_v, string_v);
3622 CAMLlocal1 (ret_v);
3623 int pt = Int_val(pt_v);
3624 int x = Int_val (x_v);
3625 int y = Int_val (y_v);
3626 double w;
3627
3628 w = draw_string (state.face, pt, x, y, String_val (string_v));
3629 ret_v = caml_copy_double (w);
3630 CAMLreturn (ret_v);
3631 }
3632
3633 CAMLprim value ml_measure_string (value pt_v, value string_v)
3634 {
3635 CAMLparam2 (pt_v, string_v);
3636 CAMLlocal1 (ret_v);
3637 int pt = Int_val (pt_v);
3638 double w;
3639
3640 w = measure_string (state.face, pt, String_val (string_v));
3641 ret_v = caml_copy_double (w);
3642 CAMLreturn (ret_v);
3643 }
3644
3645 CAMLprim value ml_getpagebox (value opaque_v)
3646 {
3647 CAMLparam1 (opaque_v);
3648 CAMLlocal1 (ret_v);
3649 fz_rect rect;
3650 fz_irect bbox;
3651 fz_matrix ctm;
3652 fz_device *dev;
3653 char *s = String_val (opaque_v);
3654 struct page *page = parse_pointer ("ml_getpagebox", s);
3655
3656 ret_v = caml_alloc_tuple (4);
3657 dev = fz_new_bbox_device (state.ctx, &rect);
3658 dev->hints |= FZ_IGNORE_SHADE;
3659
3660 switch (page->type) {
3661 case DPDF:
3662 ctm = pagectm (page);
3663 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, &ctm, NULL);
3664 break;
3665
3666 case DXPS:
3667 ctm = pagectm (page);
3668 xps_run_page (state.u.xps, page->u.xpspage, dev, &ctm, NULL);
3669 break;
3670
3671 default:
3672 rect = fz_infinite_rect;
3673 break;
3674 }
3675
3676 fz_free_device (dev);
3677 fz_round_rect (&bbox, &rect);
3678 Field (ret_v, 0) = Val_int (bbox.x0);
3679 Field (ret_v, 1) = Val_int (bbox.y0);
3680 Field (ret_v, 2) = Val_int (bbox.x1);
3681 Field (ret_v, 3) = Val_int (bbox.y1);
3682
3683 CAMLreturn (ret_v);
3684 }
3685
3686 CAMLprim value ml_setaalevel (value level_v)
3687 {
3688 CAMLparam1 (level_v);
3689
3690 state.aalevel = Int_val (level_v);
3691 CAMLreturn (Val_unit);
3692 }
3693
3694 #undef pixel
3695 #include <X11/Xlib.h>
3696 #include <GL/glx.h>
3697
3698 static struct {
3699 Display *dpy;
3700 GLXContext ctx;
3701 GLXDrawable drawable;
3702 } glx;
3703
3704 #include "keysym2ucs.c"
3705
3706 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3707 {
3708 CAMLparam1 (keysym_v);
3709 CAMLlocal1 (str_v);
3710 KeySym keysym = Int_val (keysym_v);
3711 Rune rune;
3712 int len;
3713 char buf[5];
3714
3715 rune = keysym2ucs (keysym);
3716 len = fz_runetochar (buf, rune);
3717 buf[len] = 0;
3718 str_v = caml_copy_string (buf);
3719 CAMLreturn (str_v);
3720 }
3721
3722 CAMLprim value ml_glx (value win_v)
3723 {
3724 CAMLparam1 (win_v);
3725 XVisualInfo *visual;
3726 int screen, wid = Int_val (win_v);
3727 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3728
3729 glx.dpy = XOpenDisplay (NULL);
3730 if (!glx.dpy) {
3731 caml_failwith ("XOpenDisplay");
3732 }
3733
3734 screen = DefaultScreen (glx.dpy);
3735 visual = glXChooseVisual (glx.dpy, screen, attributes);
3736 if (!visual) {
3737 XCloseDisplay (glx.dpy);
3738 glx.dpy = NULL;
3739 caml_failwith ("glXChooseVisual");
3740 }
3741
3742 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3743 XFree (visual);
3744 if (!glx.ctx) {
3745 XCloseDisplay (glx.dpy);
3746 glx.dpy = NULL;
3747 caml_failwith ("glXCreateContext");
3748 }
3749
3750 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3751 glXDestroyContext (glx.dpy, glx.ctx);
3752 XCloseDisplay (glx.dpy);
3753 glx.dpy = NULL;
3754 glx.ctx = NULL;
3755 caml_failwith ("glXMakeCurrent");
3756 }
3757 glx.drawable = wid;
3758 CAMLreturn (Val_unit);
3759 }
3760
3761 CAMLprim value ml_swapb (value unit_v)
3762 {
3763 CAMLparam1 (unit_v);
3764 glXSwapBuffers (glx.dpy, glx.drawable);
3765 CAMLreturn (Val_unit);
3766 }
3767
3768 CAMLprim value ml_glxsync (value unit_v)
3769 {
3770 CAMLparam1 (unit_v);
3771 if (glx.dpy && glx.ctx) {
3772 glXWaitX ();
3773 glXWaitGL ();
3774 }
3775 CAMLreturn (Val_unit);
3776 }
3777
3778 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3779 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3780
3781 CAMLprim value ml_platform (value unit_v)
3782 {
3783 CAMLparam1 (unit_v);
3784 int platid = piunknown;
3785
3786 #if defined __linux__
3787 platid = pilinux;
3788 #elif defined __CYGWIN__
3789 platid = picygwin;
3790 #elif defined __DragonFly__
3791 platid = pidragonflybsd;
3792 #elif defined __FreeBSD__
3793 platid = pifreebsd;
3794 #elif defined __OpenBSD__
3795 platid = piopenbsd;
3796 #elif defined __NetBSD__
3797 platid = pinetbsd;
3798 #elif defined __sun__
3799 platid = pisun;
3800 #elif defined __APPLE__
3801 platid = piosx;
3802 #endif
3803 CAMLreturn (Val_int (platid));
3804 }
3805
3806 CAMLprim value ml_cloexec (value fd_v)
3807 {
3808 CAMLparam1 (fd_v);
3809 int fd = Int_val (fd_v);
3810
3811 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3812 uerror ("fcntl", Nothing);
3813 }
3814 CAMLreturn (Val_unit);
3815 }
3816
3817 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3818 {
3819 CAMLparam2 (w_v, h_v);
3820 CAMLlocal1 (ret_v);
3821 struct pbo *pbo;
3822 int w = Int_val (w_v);
3823 int h = Int_val (h_v);
3824 int cs = Int_val (cs_v);
3825
3826 if (state.pbo_usable) {
3827 pbo = calloc (sizeof (*pbo), 1);
3828 if (!pbo) {
3829 err (1, "calloc pbo");
3830 }
3831
3832 switch (cs) {
3833 case 0:
3834 case 1:
3835 pbo->size = w*h*4;
3836 break;
3837 case 2:
3838 pbo->size = w*h*2;
3839 break;
3840 default:
3841 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3842 }
3843
3844 state.glGenBuffersARB (1, &pbo->id);
3845 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3846 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3847 NULL, GL_STREAM_DRAW);
3848 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3849 GL_READ_WRITE);
3850 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3851 if (!pbo->ptr) {
3852 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3853 state.glDeleteBuffersARB (1, &pbo->id);
3854 free (pbo);
3855 ret_v = caml_copy_string ("0");
3856 }
3857 else {
3858 int res;
3859 char *s;
3860
3861 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3862 if (res < 0) {
3863 err (1, "snprintf %" FMT_ptr " failed", pbo);
3864 }
3865 s = malloc (res+1);
3866 if (!s) {
3867 err (1, "malloc %d bytes failed", res+1);
3868 }
3869 res = sprintf (s, "%" FMT_ptr, pbo);
3870 if (res < 0) {
3871 err (1, "sprintf %" FMT_ptr " failed", pbo);
3872 }
3873 ret_v = caml_copy_string (s);
3874 free (s);
3875 }
3876 }
3877 else {
3878 ret_v = caml_copy_string ("0");
3879 }
3880 CAMLreturn (ret_v);
3881 }
3882
3883 CAMLprim value ml_freepbo (value s_v)
3884 {
3885 CAMLparam1 (s_v);
3886 char *s = String_val (s_v);
3887 struct tile *tile = parse_pointer ("ml_freepbo", s);
3888
3889 if (tile->pbo) {
3890 state.glDeleteBuffersARB (1, &tile->pbo->id);
3891 tile->pbo->id = -1;
3892 tile->pbo->ptr = NULL;
3893 tile->pbo->size = -1;
3894 }
3895 CAMLreturn (Val_unit);
3896 }
3897
3898 CAMLprim value ml_unmappbo (value s_v)
3899 {
3900 CAMLparam1 (s_v);
3901 char *s = String_val (s_v);
3902 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3903
3904 if (tile->pbo) {
3905 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3906 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3907 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3908 }
3909 tile->pbo->ptr = NULL;
3910 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3911 }
3912 CAMLreturn (Val_unit);
3913 }
3914
3915 static void setuppbo (void)
3916 {
3917 #define GGPA(n) (*(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n))
3918 state.pbo_usable = GGPA (glBindBufferARB)
3919 && GGPA (glUnmapBufferARB)
3920 && GGPA (glMapBufferARB)
3921 && GGPA (glBufferDataARB)
3922 && GGPA (glGenBuffersARB)
3923 && GGPA (glDeleteBuffersARB);
3924 #undef GGPA
3925 }
3926
3927 CAMLprim value ml_pbo_usable (value unit_v)
3928 {
3929 CAMLparam1 (unit_v);
3930 CAMLreturn (Val_bool (state.pbo_usable));
3931 }
3932
3933 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
3934 {
3935 CAMLparam3 (ptr_v, x_v, y_v);
3936 CAMLlocal2 (ret_v, tup_v);
3937 struct page *page;
3938 char *s = String_val (ptr_v);
3939 int x = Int_val (x_v), y = Int_val (y_v);
3940 struct pagedim *pdim;
3941 fz_point p;
3942 fz_matrix ctm;
3943
3944 page = parse_pointer ("ml_unproject", s);
3945 pdim = &state.pagedims[page->pdimno];
3946
3947 ret_v = Val_int (0);
3948 if (trylock ("ml_unproject")) {
3949 goto done;
3950 }
3951
3952 switch (page->type) {
3953 case DPDF:
3954 trimctm (page->u.pdfpage, page->pdimno);
3955 break;
3956
3957 default:
3958 break;
3959 }
3960 p.x = x;
3961 p.y = y;
3962
3963 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
3964 fz_invert_matrix (&ctm, &ctm);
3965 fz_transform_point (&p, &ctm);
3966
3967 tup_v = caml_alloc_tuple (2);
3968 ret_v = caml_alloc_small (1, 1);
3969 Field (tup_v, 0) = Val_int (p.x);
3970 Field (tup_v, 1) = Val_int (p.y);
3971 Field (ret_v, 0) = tup_v;
3972
3973 unlock ("ml_unproject");
3974 done:
3975 CAMLreturn (ret_v);
3976 }
3977
3978 static void makestippletex (void)
3979 {
3980 const char pixels[] = "\xff\xff\0\0";
3981 glGenTextures (1, &state.stid);
3982 glBindTexture (GL_TEXTURE_1D, state.stid);
3983 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
3984 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
3985 glTexImage1D (
3986 GL_TEXTURE_1D,
3987 0,
3988 GL_ALPHA,
3989 4,
3990 0,
3991 GL_ALPHA,
3992 GL_UNSIGNED_BYTE,
3993 pixels
3994 );
3995 }
3996
3997 CAMLprim value ml_init (value pipe_v, value params_v)
3998 {
3999 CAMLparam2 (pipe_v, params_v);
4000 CAMLlocal2 (trim_v, fuzz_v);
4001 int ret;
4002 int texcount;
4003 char *fontpath;
4004 int colorspace;
4005 int mustoresize;
4006 int haspboext;
4007 struct sigaction sa;
4008
4009 state.cr = Int_val (Field (pipe_v, 0));
4010 state.cw = Int_val (Field (pipe_v, 1));
4011 state.rotate = Int_val (Field (params_v, 0));
4012 state.fitmodel = Int_val (Field (params_v, 1));
4013 trim_v = Field (params_v, 2);
4014 texcount = Int_val (Field (params_v, 3));
4015 state.sliceheight = Int_val (Field (params_v, 4));
4016 mustoresize = Int_val (Field (params_v, 5));
4017 colorspace = Int_val (Field (params_v, 6));
4018 fontpath = String_val (Field (params_v, 7));
4019
4020 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
4021 if (!state.trimcachepath) {
4022 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
4023 strerror (errno));
4024 }
4025 haspboext = Bool_val (Field (params_v, 9));
4026
4027 state.ctx = fz_new_context (NULL, NULL, mustoresize);
4028
4029 state.trimmargins = Bool_val (Field (trim_v, 0));
4030 fuzz_v = Field (trim_v, 1);
4031 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
4032 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
4033 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
4034 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
4035
4036 set_tex_params (colorspace);
4037
4038 if (*fontpath) {
4039 state.face = load_font (fontpath);
4040 }
4041 else {
4042 unsigned int len;
4043 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
4044
4045 state.face = load_builtin_font (base, len);
4046 }
4047 if (!state.face) _exit (1);
4048
4049 realloctexts (texcount);
4050
4051 if (haspboext) {
4052 setuppbo ();
4053 }
4054
4055 makestippletex ();
4056 #ifdef __CYGWIN__
4057 sa.sa_handler = SIG_IGN;
4058 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
4059 #else
4060 sa.sa_handler = SIG_DFL;
4061 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
4062 #endif
4063 if (sigemptyset (&sa.sa_mask)) {
4064 err (1, "sigemptyset");
4065 }
4066 if (sigaction (SIGCHLD, &sa, NULL)) {
4067 err (1, "sigaction");
4068 }
4069
4070 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
4071 if (ret) {
4072 errx (1, "pthread_create: %s", strerror (ret));
4073 }
4074
4075 CAMLreturn (Val_unit);
4076 }
PDF pager