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Cosmetics
[llpp.git] / link.c
blob3c1534ac32ce05c2cf1aeea41861f2c8ee71c1ad
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 #include <mupdf/img.h>
38
39 #include FT_FREETYPE_H
40
41 #define PIGGYBACK
42
43 #ifndef __USE_GNU
44 extern char **environ;
45 #endif
46
47 #define MIN(a,b) ((a) < (b) ? (a) : (b))
48 #define MAX(a,b) ((a) > (b) ? (a) : (b))
49
50 #if defined __GNUC__
51 #define NORETURN_ATTR __attribute__ ((noreturn))
52 #define UNUSED_ATTR __attribute__ ((unused))
53 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
54 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
55 #else
56 #define NORETURN_ATTR
57 #define UNUSED_ATTR
58 #define OPTIMIZE_ATTR(n)
59 #define GCC_FMT_ATTR(a, b)
60 #endif
61
62 #define FMT_s "zu"
63
64 #define FMT_ptr "p"
65 #define FMT_ptr_cast(p) (p)
66 #define FMT_ptr_cast2(p) (p)
67
68 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
69 err (int exitcode, const char *fmt, ...)
70 {
71 va_list ap;
72 int savederrno;
73
74 savederrno = errno;
75 va_start (ap, fmt);
76 vfprintf (stderr, fmt, ap);
77 va_end (ap);
78 fprintf (stderr, ": %s\n", strerror (savederrno));
79 fflush (stderr);
80 _exit (exitcode);
81 }
82
83 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
84 errx (int exitcode, const char *fmt, ...)
85 {
86 va_list ap;
87
88 va_start (ap, fmt);
89 vfprintf (stderr, fmt, ap);
90 va_end (ap);
91 fputc ('\n', stderr);
92 fflush (stderr);
93 _exit (exitcode);
94 }
95
96 #ifndef GL_TEXTURE_RECTANGLE_ARB
97 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
98 #endif
99
100 #ifndef GL_BGRA
101 #define GL_BGRA 0x80E1
102 #endif
103
104 #ifndef GL_UNSIGNED_INT_8_8_8_8
105 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
106 #endif
107
108 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
109 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
110 #endif
111
112 #if 0
113 #define lprintf printf
114 #else
115 #define lprintf(...)
116 #endif
117
118 #define ARSERT(cond) for (;;) { \
119 if (!(cond)) { \
120 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
121 } \
122 break; \
123 }
124
125 struct slice {
126 int h;
127 int texindex;
128 };
129
130 struct tile {
131 int w, h;
132 int slicecount;
133 int sliceheight;
134 struct pbo *pbo;
135 fz_pixmap *pixmap;
136 struct slice slices[1];
137 };
138
139 struct pagedim {
140 int pageno;
141 int rotate;
142 int left;
143 int tctmready;
144 fz_irect bounds;
145 fz_rect pagebox;
146 fz_rect mediabox;
147 fz_matrix ctm, zoomctm, lctm, tctm;
148 };
149
150 struct slink {
151 fz_irect bbox;
152 fz_link *link;
153 };
154
155 enum { DPDF, DXPS, DCBZ, DIMG };
156
157 struct page {
158 int tgen;
159 int sgen;
160 int type;
161 int pageno;
162 int pdimno;
163 fz_text_page *text;
164 fz_text_sheet *sheet;
165 union {
166 void *ptr;
167 pdf_page *pdfpage;
168 xps_page *xpspage;
169 cbz_page *cbzpage;
170 image_page *imgpage;
171 } u;
172 fz_display_list *dlist;
173 int slinkcount;
174 struct slink *slinks;
175 struct mark {
176 int i;
177 fz_text_span *span;
178 } fmark, lmark;
179 void (*freepage) (void *);
180 };
181
182 struct {
183 int type;
184 int sliceheight;
185 struct pagedim *pagedims;
186 int pagecount;
187 int pagedimcount;
188 union {
189 pdf_document *pdf;
190 xps_document *xps;
191 cbz_document *cbz;
192 image_document *img;
193 } u;
194 fz_context *ctx;
195 int w, h;
196
197 int texindex;
198 int texcount;
199 GLuint *texids;
200
201 GLenum texiform;
202 GLenum texform;
203 GLenum texty;
204
205 fz_colorspace *colorspace;
206
207 struct {
208 int w, h;
209 struct slice *slice;
210 } *texowners;
211
212 int rotate;
213 enum { FitWidth, FitProportional, FitPage } fitmodel;
214 int trimmargins;
215 int needoutline;
216 int gen;
217 int aalevel;
218
219 int trimanew;
220 fz_irect trimfuzz;
221 fz_pixmap *pig;
222
223 pthread_t thread;
224 int cr, cw;
225 FT_Face face;
226
227 void (*closedoc) (void);
228 void (*freepage) (void *);
229
230 char *trimcachepath;
231 int cxack;
232
233 GLuint stid;
234
235 int pbo_usable;
236 void (*glBindBufferARB) (GLenum, GLuint);
237 GLboolean (*glUnmapBufferARB) (GLenum);
238 void *(*glMapBufferARB) (GLenum, GLenum);
239 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
240 void (*glGenBuffersARB) (GLsizei, GLuint *);
241 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
242
243 GLfloat texcoords[8];
244 GLfloat vertices[16];
245 } state;
246
247 struct pbo {
248 GLuint id;
249 void *ptr;
250 size_t size;
251 };
252
253 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
254 {
255 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
256 }
257
258 static void UNUSED_ATTR debug_bbox (const char *cap, fz_irect r)
259 {
260 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
261 }
262
263 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
264 {
265 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
266 m.a, m.b, m.c, m.d, m.e, m.f);
267 }
268
269 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
270
271 static void lock (const char *cap)
272 {
273 int ret = pthread_mutex_lock (&mutex);
274 if (ret) {
275 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
276 }
277 }
278
279 static void unlock (const char *cap)
280 {
281 int ret = pthread_mutex_unlock (&mutex);
282 if (ret) {
283 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
284 }
285 }
286
287 static int trylock (const char *cap)
288 {
289 int ret = pthread_mutex_trylock (&mutex);
290 if (ret && ret != EBUSY) {
291 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
292 }
293 return ret == EBUSY;
294 }
295
296 static void *parse_pointer (const char *cap, const char *s)
297 {
298 int ret;
299 void *ptr;
300
301 ret = sscanf (s, "%" FMT_ptr, FMT_ptr_cast (&ptr));
302 if (ret != 1) {
303 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
304 }
305 return ptr;
306 }
307
308 static double now (void)
309 {
310 struct timeval tv;
311
312 if (gettimeofday (&tv, NULL)) {
313 err (1, "gettimeofday");
314 }
315 return tv.tv_sec + tv.tv_usec*1e-6;
316 }
317
318 static int hasdata (void)
319 {
320 int ret, avail;
321 ret = ioctl (state.cr, FIONREAD, &avail);
322 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
323 return avail > 0;
324 }
325
326 CAMLprim value ml_hasdata (value fd_v)
327 {
328 CAMLparam1 (fd_v);
329 int ret, avail;
330
331 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
332 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
333 CAMLreturn (Val_bool (avail > 0));
334 }
335
336 static void readdata (void *p, int size)
337 {
338 ssize_t n;
339
340 again:
341 n = read (state.cr, p, size);
342 if (n < 0) {
343 if (errno == EINTR) goto again;
344 err (1, "read (req %d, ret %zd)", size, n);
345 }
346 if (n - size) {
347 if (!n) errx (1, "EOF while reading");
348 errx (1, "read (req %d, ret %zd)", size, n);
349 }
350 }
351
352 static void writedata (char *p, int size)
353 {
354 ssize_t n;
355
356 p[0] = (size >> 24) & 0xff;
357 p[1] = (size >> 16) & 0xff;
358 p[2] = (size >> 8) & 0xff;
359 p[3] = (size >> 0) & 0xff;
360
361 n = write (state.cw, p, size + 4);
362 if (n - size - 4) {
363 if (!n) errx (1, "EOF while writing data");
364 err (1, "write (req %d, ret %zd)", size + 4, n);
365 }
366 }
367
368 static int readlen (void)
369 {
370 unsigned char p[4];
371
372 readdata (p, 4);
373 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
374 }
375
376 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
377 {
378 int size = 200, len;
379 va_list ap;
380 char *buf;
381
382 buf = malloc (size);
383 for (;;) {
384 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
385
386 va_start (ap, fmt);
387 len = vsnprintf (buf + 4, size - 4, fmt, ap);
388 va_end (ap);
389
390 if (len > -1) {
391 if (len < size - 4) {
392 writedata (buf, len);
393 break;
394 }
395 else size = len + 5;
396 }
397 else {
398 err (1, "vsnprintf for `%s' failed", fmt);
399 }
400 buf = realloc (buf, size);
401 }
402 free (buf);
403 }
404
405 static void closepdf (void)
406 {
407 if (state.u.pdf) {
408 pdf_close_document (state.u.pdf);
409 state.u.pdf = NULL;
410 }
411 }
412
413 static void closexps (void)
414 {
415 if (state.u.xps) {
416 xps_close_document (state.u.xps);
417 state.u.xps = NULL;
418 }
419 }
420
421 static void closecbz (void)
422 {
423 if (state.u.cbz) {
424 cbz_close_document (state.u.cbz);
425 state.u.cbz = NULL;
426 }
427 }
428
429 static void closeimg (void)
430 {
431 if (state.u.img) {
432 image_close_document (state.u.img);
433 state.u.img = NULL;
434 }
435 }
436
437 static void freepdfpage (void *ptr)
438 {
439 pdf_free_page (state.u.pdf, ptr);
440 }
441
442 static void freeemptyxxxpage (void *ptr)
443 {
444 (void) ptr;
445 }
446
447 static void freexpspage (void *ptr)
448 {
449 xps_free_page (state.u.xps, ptr);
450 }
451
452 static void freecbzpage (void *ptr)
453 {
454 cbz_free_page (state.u.cbz, ptr);
455 }
456
457 static void freeimgpage (void *ptr)
458 {
459 image_free_page (state.u.img, ptr);
460 }
461
462 static void openxref (char *filename, char *password)
463 {
464 int i, len;
465
466 for (i = 0; i < state.texcount; ++i) {
467 state.texowners[i].w = -1;
468 state.texowners[i].slice = NULL;
469 }
470
471 if (state.closedoc) state.closedoc ();
472
473 len = strlen (filename);
474
475 state.type = DPDF;
476 {
477 int i;
478 struct {
479 char *ext;
480 int type;
481 } tbl[] = {
482 { "xps", DXPS },
483 { "cbz", DCBZ },
484 { "jpg", DIMG },
485 { "jpeg", DIMG },
486 { "png", DIMG }
487 };
488
489 for (i = 0; i < sizeof (tbl) / sizeof (*tbl); ++i) {
490 int len2 = strlen (tbl[i].ext);
491
492 if (len2 < len && !strcasecmp (tbl[i].ext, filename + len -len2)) {
493 state.type = tbl[i].type;
494 break;
495 }
496 }
497 }
498
499 if (state.pagedims) {
500 free (state.pagedims);
501 state.pagedims = NULL;
502 }
503 state.pagedimcount = 0;
504
505 fz_set_aa_level (state.ctx, state.aalevel);
506 switch (state.type) {
507 case DPDF:
508 state.u.pdf = pdf_open_document (state.ctx, filename);
509 if (pdf_needs_password (state.u.pdf)) {
510 int okay = pdf_authenticate_password (state.u.pdf, password);
511 if (!okay) {
512 errx (1, "invalid password");
513 }
514 }
515 state.pagecount = pdf_count_pages (state.u.pdf);
516 state.closedoc = closepdf;
517 state.freepage = freepdfpage;
518 break;
519
520 case DXPS:
521 state.u.xps = xps_open_document (state.ctx, filename);
522 state.pagecount = xps_count_pages (state.u.xps);
523 state.closedoc = closexps;
524 state.freepage = freexpspage;
525 break;
526
527 case DCBZ:
528 state.u.cbz = cbz_open_document (state.ctx, filename);
529 state.pagecount = cbz_count_pages (state.u.cbz);
530 state.closedoc = closecbz;
531 state.freepage = freecbzpage;
532 break;
533
534 case DIMG:
535 state.u.img = image_open_document (state.ctx, filename);
536 state.pagecount = 1;
537 state.closedoc = closeimg;
538 state.freepage = freeimgpage;
539 break;
540 }
541 }
542
543 static void pdfinfo (void)
544 {
545 if (state.type == DPDF) {
546 pdf_obj *infoobj;
547
548 printd ("info PDF version\t%d.%d",
549 state.u.pdf->version / 10, state.u.pdf->version % 10);
550
551 infoobj = pdf_dict_gets (pdf_trailer (state.u.pdf), "Info");
552 if (infoobj) {
553 int i;
554 char *s;
555 char *items[] = { "Title", "Author", "Creator",
556 "Producer", "CreationDate" };
557
558 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
559 pdf_obj *obj = pdf_dict_gets (infoobj, items[i]);
560 s = pdf_to_utf8 (state.u.pdf, obj);
561 if (*s) {
562 if (i == 0) {
563 printd ("title %s", s);
564 }
565 printd ("info %s\t%s", items[i], s);
566 }
567 fz_free (state.ctx, s);
568 }
569 }
570 printd ("infoend");
571 }
572 }
573
574 static void unlinktile (struct tile *tile)
575 {
576 int i;
577
578 for (i = 0; i < tile->slicecount; ++i) {
579 struct slice *s = &tile->slices[i];
580
581 if (s->texindex != -1) {
582 if (state.texowners[s->texindex].slice == s) {
583 state.texowners[s->texindex].slice = NULL;
584 }
585 }
586 }
587 }
588
589 static void freepage (struct page *page)
590 {
591 if (page->text) {
592 fz_free_text_page (state.ctx, page->text);
593 }
594 if (page->sheet) {
595 fz_free_text_sheet (state.ctx, page->sheet);
596 }
597 if (page->slinks) {
598 free (page->slinks);
599 }
600 fz_drop_display_list (state.ctx, page->dlist);
601 page->freepage (page->u.ptr);
602 free (page);
603 }
604
605 static void freetile (struct tile *tile)
606 {
607 unlinktile (tile);
608 if (!tile->pbo) {
609 #ifndef PIGGYBACK
610 fz_drop_pixmap (state.ctx, tile->pixmap);
611 #else
612 if (state.pig) {
613 fz_drop_pixmap (state.ctx, state.pig);
614 }
615 state.pig = tile->pixmap;
616 #endif
617 }
618 else {
619 free (tile->pbo);
620 fz_drop_pixmap (state.ctx, tile->pixmap);
621 }
622 free (tile);
623 }
624
625 #ifdef __ALTIVEC__
626 #include <stdint.h>
627 #include <altivec.h>
628
629 static int cacheline32bytes;
630
631 static void __attribute__ ((constructor)) clcheck (void)
632 {
633 char **envp = environ;
634 unsigned long *auxv;
635
636 while (*envp++);
637
638 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
639 if (*auxv == 19) {
640 cacheline32bytes = auxv[1] == 32;
641 return;
642 }
643 }
644 }
645
646 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
647 {
648 size_t size = pixmap->w * pixmap->h * pixmap->n;
649 if (cacheline32bytes && size > 32) {
650 intptr_t a1, a2, diff;
651 size_t sizea, i;
652 vector unsigned char v = vec_splat_u8 (-1);
653 vector unsigned char *p;
654
655 a1 = a2 = (intptr_t) pixmap->samples;
656 a2 = (a1 + 31) & ~31;
657 diff = a2 - a1;
658 sizea = size - diff;
659 p = (void *) a2;
660
661 while (a1 != a2) *(char *) a1++ = 0xff;
662 for (i = 0; i < (sizea & ~31); i += 32) {
663 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
664 vec_st (v, i, p);
665 vec_st (v, i + 16, p);
666 }
667 while (i < sizea) *((char *) a1 + i++) = 0xff;
668 }
669 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
670 }
671 #else
672 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
673 #endif
674
675 static void trimctm (pdf_page *page, int pindex)
676 {
677 fz_matrix ctm;
678 struct pagedim *pdim = &state.pagedims[pindex];
679
680 if (!pdim->tctmready) {
681 if (state.trimmargins) {
682 fz_rect realbox;
683 fz_matrix rm, sm, tm, im, ctm1;
684
685 fz_rotate (&rm, -pdim->rotate);
686 fz_scale (&sm, 1, -1);
687 fz_concat (&ctm, &rm, &sm);
688 realbox = pdim->mediabox;
689 fz_transform_rect (&realbox, &ctm);
690 fz_translate (&tm, -realbox.x0, -realbox.y0);
691 fz_concat (&ctm1, &ctm, &tm);
692 fz_invert_matrix (&im, &page->ctm);
693 fz_concat (&ctm, &im, &ctm1);
694 }
695 else {
696 ctm = fz_identity;
697 }
698 pdim->tctm = ctm;
699 pdim->tctmready = 1;
700 }
701 }
702
703 static fz_matrix pagectm (struct page *page)
704 {
705 fz_matrix ctm, tm;
706
707 if (page->type == DPDF) {
708 trimctm (page->u.pdfpage, page->pdimno);
709 fz_concat (&ctm,
710 &state.pagedims[page->pdimno].tctm,
711 &state.pagedims[page->pdimno].ctm);
712 }
713 else {
714 struct pagedim *pdim = &state.pagedims[page->pdimno];
715
716 fz_translate (&tm, -pdim->mediabox.x0, -pdim->mediabox.y0);
717 fz_concat (&ctm, &tm, &state.pagedims[page->pdimno].ctm);
718 }
719 return ctm;
720 }
721
722 static void *loadpage (int pageno, int pindex)
723 {
724 fz_device *dev;
725 struct page *page;
726
727 page = calloc (sizeof (struct page), 1);
728 if (!page) {
729 err (1, "calloc page %d", pageno);
730 }
731
732 page->dlist = fz_new_display_list (state.ctx);
733 dev = fz_new_list_device (state.ctx, page->dlist);
734 fz_try (state.ctx) {
735 switch (state.type) {
736 case DPDF:
737 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
738 pdf_run_page (state.u.pdf, page->u.pdfpage, dev,
739 &fz_identity, NULL);
740 page->freepage = freepdfpage;
741 break;
742
743 case DXPS:
744 page->u.xpspage = xps_load_page (state.u.xps, pageno);
745 xps_run_page (state.u.xps, page->u.xpspage, dev,
746 &fz_identity, NULL);
747 page->freepage = freexpspage;
748 break;
749
750 case DCBZ:
751 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
752 cbz_run_page (state.u.cbz, page->u.cbzpage, dev,
753 &fz_identity, NULL);
754 page->freepage = freecbzpage;
755 break;
756
757 case DIMG:
758 page->u.imgpage = image_load_page (state.u.img, pageno);
759 image_run_page (state.u.img, page->u.imgpage, dev,
760 &fz_identity, NULL);
761 page->freepage = freeimgpage;
762 break;
763 }
764 }
765 fz_catch (state.ctx) {
766 page->u.ptr = NULL;
767 page->freepage = freeemptyxxxpage;
768 }
769 fz_free_device (dev);
770
771 page->pdimno = pindex;
772 page->pageno = pageno;
773 page->sgen = state.gen;
774 page->tgen = state.gen;
775 page->type = state.type;
776
777 return page;
778 }
779
780 static struct tile *alloctile (int h)
781 {
782 int i;
783 int slicecount;
784 size_t tilesize;
785 struct tile *tile;
786
787 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
788 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
789 tile = calloc (tilesize, 1);
790 if (!tile) {
791 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
792 }
793 for (i = 0; i < slicecount; ++i) {
794 int sh = MIN (h, state.sliceheight);
795 tile->slices[i].h = sh;
796 tile->slices[i].texindex = -1;
797 h -= sh;
798 }
799 tile->slicecount = slicecount;
800 tile->sliceheight = state.sliceheight;
801 return tile;
802 }
803
804 #ifdef OBSCURED_OPT
805 struct obs {
806 int cured;
807 fz_irect b;
808 };
809
810 static void obs_fill_image (fz_device *dev, fz_image *image,
811 const fz_matrix *ctm, float alpha)
812 {
813 struct obs *obs = dev->user;
814
815 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
816 fz_irect b;
817 fz_rect rect = fz_unit_rect;
818
819 fz_transform_rect (&rect, ctm);
820 fz_round_rect (&b, &rect);
821 fz_intersect_irect (&b, &obs->b);
822 obs->cured = b.x0 == obs->b.x0
823 && b.x1 == obs->b.x1
824 && b.y0 == obs->b.y0
825 && b.y1 == obs->b.y1;
826 }
827 }
828
829 static int obscured (struct page *page, fz_irect bbox)
830 {
831 fz_rect rect;
832 fz_matrix ctm;
833 fz_device dev;
834 struct obs obs;
835
836 memset (&dev, 0, sizeof (dev));
837 memset (&obs, 0, sizeof (obs));
838 dev.hints = 0;
839 dev.flags = 0;
840 dev.user = &obs;
841 dev.ctx = state.ctx;
842 dev.fill_image = obs_fill_image;
843 obs.b = bbox;
844 fz_rect_from_irect (&rect, &bbox);
845 ctm = pagectm (page);
846 fz_run_display_list (page->dlist, &dev, &ctm, &rect, NULL);
847 return obs.cured;
848 }
849 #define OBSCURED obscured
850 #else
851 #define OBSCURED(a, b) 0
852 #endif
853
854 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
855 struct pbo *pbo)
856 {
857 fz_rect rect;
858 fz_irect bbox;
859 fz_matrix ctm;
860 fz_device *dev;
861 struct tile *tile;
862 struct pagedim *pdim;
863
864 tile = alloctile (h);
865 pdim = &state.pagedims[page->pdimno];
866
867 bbox = pdim->bounds;
868 bbox.x0 += x;
869 bbox.y0 += y;
870 bbox.x1 = bbox.x0 + w;
871 bbox.y1 = bbox.y0 + h;
872
873 if (state.pig) {
874 if (state.pig->w == w
875 && state.pig->h == h
876 && state.pig->colorspace == state.colorspace) {
877 tile->pixmap = state.pig;
878 tile->pixmap->x = bbox.x0;
879 tile->pixmap->y = bbox.y0;
880 }
881 else {
882 fz_drop_pixmap (state.ctx, state.pig);
883 }
884 state.pig = NULL;
885 }
886 if (!tile->pixmap) {
887 if (pbo) {
888 tile->pixmap =
889 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
890 &bbox, pbo->ptr);
891 tile->pbo = pbo;
892 }
893 else {
894 tile->pixmap =
895 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox);
896 }
897 }
898
899 tile->w = w;
900 tile->h = h;
901 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
902 clearpixmap (tile->pixmap);
903 }
904 dev = fz_new_draw_device (state.ctx, tile->pixmap);
905 ctm = pagectm (page);
906 fz_rect_from_irect (&rect, &bbox);
907 fz_run_display_list (page->dlist, dev, &ctm, &rect, NULL);
908 fz_free_device (dev);
909
910 return tile;
911 }
912
913 static void initpdims (void)
914 {
915 double start, end;
916 FILE *trimf = NULL;
917 fz_rect rootmediabox;
918 int pageno, trim, show;
919 int trimw = 0, cxcount;
920
921 start = now ();
922
923 if (state.trimmargins && state.trimcachepath) {
924 trimf = fopen (state.trimcachepath, "rb");
925 if (!trimf) {
926 trimf = fopen (state.trimcachepath, "wb");
927 trimw = 1;
928 }
929 }
930
931 if (state.trimmargins || state.type == DPDF || !state.cxack)
932 cxcount = state.pagecount;
933 else
934 cxcount = MIN (state.pagecount, 1);
935
936 if (state.type == DPDF) {
937 pdf_obj *obj;
938 obj = pdf_dict_getp (pdf_trailer (state.u.pdf),
939 "Root/Pages/MediaBox");
940 pdf_to_rect (state.ctx, obj, &rootmediabox);
941 }
942
943 for (pageno = 0; pageno < cxcount; ++pageno) {
944 int rotate = 0;
945 struct pagedim *p;
946 fz_rect mediabox;
947
948 switch (state.type) {
949 case DPDF: {
950 pdf_obj *pageref = pdf_lookup_page_obj (state.u.pdf, pageno);
951 pdf_obj *pageobj = pdf_resolve_indirect (pageref);
952
953 if (state.trimmargins) {
954 pdf_obj *obj;
955 pdf_page *page;
956
957 fz_try (state.ctx) {
958 page = pdf_load_page (state.u.pdf, pageno);
959 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
960 trim = state.trimanew || !obj;
961 if (trim) {
962 fz_rect rect;
963 fz_matrix ctm;
964 fz_device *dev;
965
966 dev = fz_new_bbox_device (state.ctx, &rect);
967 dev->hints |= FZ_IGNORE_SHADE;
968 fz_invert_matrix (&ctm, &page->ctm);
969 pdf_run_page (state.u.pdf, page, dev,
970 &fz_identity, NULL);
971 fz_free_device (dev);
972
973 rect.x0 += state.trimfuzz.x0;
974 rect.x1 += state.trimfuzz.x1;
975 rect.y0 += state.trimfuzz.y0;
976 rect.y1 += state.trimfuzz.y1;
977 fz_transform_rect (&rect, &ctm);
978 fz_intersect_rect (&rect, &page->mediabox);
979
980 if (fz_is_empty_rect (&rect)) {
981 mediabox = page->mediabox;
982 }
983 else {
984 mediabox = rect;
985 }
986
987 obj = pdf_new_array (state.u.pdf, 4);
988 pdf_array_push (obj, pdf_new_real (state.u.pdf,
989 mediabox.x0));
990 pdf_array_push (obj, pdf_new_real (state.u.pdf,
991 mediabox.y0));
992 pdf_array_push (obj, pdf_new_real (state.u.pdf,
993 mediabox.x1));
994 pdf_array_push (obj, pdf_new_real (state.u.pdf,
995 mediabox.y1));
996 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
997 }
998 else {
999 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
1000 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
1001 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
1002 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
1003 }
1004
1005 rotate = page->rotate;
1006 pdf_free_page (state.u.pdf, page);
1007
1008 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
1009 if (show) {
1010 printd ("progress %f Trimming %d",
1011 (double) (pageno + 1) / state.pagecount,
1012 pageno + 1);
1013 }
1014 }
1015 fz_catch (state.ctx) {
1016 fprintf (stderr, "failed to load page %d\n", pageno+1);
1017 }
1018 }
1019 else {
1020 int empty = 0;
1021 fz_rect cropbox;
1022
1023 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "MediaBox"),
1024 &mediabox);
1025 if (fz_is_empty_rect (&mediabox)) {
1026 mediabox.x0 = 0;
1027 mediabox.y0 = 0;
1028 mediabox.x1 = 612;
1029 mediabox.y1 = 792;
1030 empty = 1;
1031 }
1032
1033 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "CropBox"),
1034 &cropbox);
1035 if (!fz_is_empty_rect (&cropbox)) {
1036 fz_intersect_rect (&mediabox, &cropbox);
1037 }
1038 else {
1039 if (empty) {
1040 if (fz_is_empty_rect (&rootmediabox)) {
1041 fprintf (stderr,
1042 "cannot find page size for page %d\n",
1043 pageno+1);
1044 }
1045 else {
1046 mediabox = rootmediabox;
1047 }
1048 }
1049 }
1050 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
1051 }
1052 break;
1053 }
1054
1055 case DXPS:
1056 {
1057 xps_page *page;
1058
1059 fz_try (state.ctx) {
1060 page = xps_load_page (state.u.xps, pageno);
1061 xps_bound_page (state.u.xps, page, &mediabox);
1062 rotate = 0;
1063 if (state.trimmargins) {
1064 fz_rect rect;
1065 fz_device *dev;
1066
1067 dev = fz_new_bbox_device (state.ctx, &rect);
1068 dev->hints |= FZ_IGNORE_SHADE;
1069 xps_run_page (state.u.xps, page, dev,
1070 &fz_identity, NULL);
1071 fz_free_device (dev);
1072
1073 rect.x0 += state.trimfuzz.x0;
1074 rect.x1 += state.trimfuzz.x1;
1075 rect.y0 += state.trimfuzz.y0;
1076 rect.y1 += state.trimfuzz.y1;
1077 fz_intersect_rect (&rect, &mediabox);
1078
1079 if (!fz_is_empty_rect (&rect)) {
1080 mediabox = rect;
1081 }
1082 }
1083 xps_free_page (state.u.xps, page);
1084 if (!state.cxack) {
1085 printd ("progress %f loading %d",
1086 (double) (pageno + 1) / state.pagecount,
1087 pageno + 1);
1088 }
1089 }
1090 fz_catch (state.ctx) {
1091 }
1092 }
1093 break;
1094
1095 case DCBZ:
1096 {
1097 rotate = 0;
1098 mediabox.x0 = 0;
1099 mediabox.y0 = 0;
1100 mediabox.x1 = 900;
1101 mediabox.y1 = 900;
1102 if (state.trimmargins && trimw) {
1103 cbz_page *page;
1104
1105 fz_try (state.ctx) {
1106 page = cbz_load_page (state.u.cbz, pageno);
1107 cbz_bound_page (state.u.cbz, page, &mediabox);
1108 cbz_free_page (state.u.cbz, page);
1109 printd ("progress %f Trimming %d",
1110 (double) (pageno + 1) / state.pagecount,
1111 pageno + 1);
1112 }
1113 fz_catch (state.ctx) {
1114 fprintf (stderr, "failed to load page %d\n", pageno+1);
1115 }
1116 if (trimf) {
1117 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1118 if (n - 1) {
1119 err (1, "fwrite trim mediabox");
1120 }
1121 }
1122 }
1123 else {
1124 if (trimf) {
1125 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1126 if (n - 1) {
1127 err (1, "fread trim mediabox");
1128 }
1129 }
1130 else {
1131 if (state.cxack) {
1132 cbz_page *page;
1133 fz_try (state.ctx) {
1134 page = cbz_load_page (state.u.cbz, pageno);
1135 cbz_bound_page (state.u.cbz, page, &mediabox);
1136 cbz_free_page (state.u.cbz, page);
1137 }
1138 fz_catch (state.ctx) {
1139 fprintf (stderr, "failed to load cbz page\n");
1140 }
1141 }
1142 }
1143 }
1144 }
1145 break;
1146
1147 case DIMG:
1148 {
1149 image_page *page;
1150
1151 rotate = 0;
1152 mediabox.x0 = 0;
1153 mediabox.y0 = 0;
1154 mediabox.x1 = 900;
1155 mediabox.y1 = 900;
1156
1157 fz_try (state.ctx) {
1158 page = image_load_page (state.u.img, pageno);
1159 image_bound_page (state.u.img, page, &mediabox);
1160 image_free_page (state.u.img, page);
1161 }
1162 fz_catch (state.ctx) {
1163 fprintf (stderr, "failed to load page %d\n", pageno+1);
1164 }
1165 }
1166 break;
1167
1168 default:
1169 ARSERT (0 && state.type);
1170 }
1171
1172 if (state.pagedimcount == 0
1173 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1174 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1175 size_t size;
1176
1177 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1178 state.pagedims = realloc (state.pagedims, size);
1179 if (!state.pagedims) {
1180 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1181 size, state.pagedimcount + 1);
1182 }
1183
1184 p = &state.pagedims[state.pagedimcount++];
1185 p->rotate = rotate;
1186 p->mediabox = mediabox;
1187 p->pageno = pageno;
1188 }
1189 }
1190 end = now ();
1191 if (state.trimmargins) {
1192 printd ("progress 1 Trimmed %d pages in %f seconds",
1193 state.pagecount, end - start);
1194 }
1195 else {
1196 printd ("vmsg Processed %d pages in %f seconds",
1197 state.pagecount, end - start);
1198 }
1199 state.trimanew = 0;
1200 if (trimf) {
1201 if (fclose (trimf)) {
1202 err (1, "fclose");
1203 }
1204 }
1205 }
1206
1207 static void layout (void)
1208 {
1209 int pindex;
1210 fz_rect box;
1211 fz_matrix ctm, rm;
1212 struct pagedim *p = p;
1213 double zw, w, maxw = 0.0, zoom = zoom;
1214
1215 if (state.pagedimcount == 0) return;
1216
1217 switch (state.fitmodel) {
1218 case FitProportional:
1219 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1220 double x0, x1;
1221
1222 p = &state.pagedims[pindex];
1223 fz_rotate (&rm, p->rotate + state.rotate);
1224 box = p->mediabox;
1225 fz_transform_rect (&box, &rm);
1226
1227 x0 = MIN (box.x0, box.x1);
1228 x1 = MAX (box.x0, box.x1);
1229
1230 w = x1 - x0;
1231 maxw = MAX (w, maxw);
1232 zoom = state.w / maxw;
1233 }
1234 break;
1235
1236 case FitPage:
1237 maxw = state.w;
1238 break;
1239
1240 case FitWidth:
1241 break;
1242
1243 default:
1244 ARSERT (0 && state.fitmodel);
1245 }
1246
1247 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1248 fz_rect rect;
1249 fz_matrix tm, sm;
1250
1251 p = &state.pagedims[pindex];
1252 fz_rotate (&ctm, state.rotate);
1253 fz_rotate (&rm, p->rotate + state.rotate);
1254 box = p->mediabox;
1255 fz_transform_rect (&box, &rm);
1256 w = box.x1 - box.x0;
1257 switch (state.fitmodel) {
1258 case FitProportional:
1259 p->left = ((maxw - w) * zoom) / 2.0;
1260 break;
1261 case FitPage:
1262 {
1263 double zh, h;
1264 zw = maxw / w;
1265 h = box.y1 - box.y0;
1266 zh = state.h / h;
1267 zoom = MIN (zw, zh);
1268 p->left = (maxw - (w * zoom)) / 2.0;
1269 }
1270 break;
1271 case FitWidth:
1272 p->left = 0;
1273 zoom = state.w / w;
1274 break;
1275 }
1276
1277 fz_scale (&p->zoomctm, zoom, zoom);
1278 fz_concat (&ctm, &p->zoomctm, &ctm);
1279
1280 fz_rotate (&rm, p->rotate);
1281 p->pagebox = p->mediabox;
1282 fz_transform_rect (&p->pagebox, &rm);
1283 p->pagebox.x1 -= p->pagebox.x0;
1284 p->pagebox.y1 -= p->pagebox.y0;
1285 p->pagebox.x0 = 0;
1286 p->pagebox.y0 = 0;
1287 rect = p->pagebox;
1288 fz_transform_rect (&rect, &ctm);
1289 fz_round_rect (&p->bounds, &rect);
1290 p->ctm = ctm;
1291
1292 fz_translate (&tm, 0, -p->mediabox.y1);
1293 fz_scale (&sm, zoom, -zoom);
1294 fz_concat (&ctm, &tm, &sm);
1295 fz_concat (&p->lctm, &ctm, &rm);
1296
1297 p->tctmready = 0;
1298 }
1299
1300 do {
1301 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1302 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1303 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1304 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1305 int w = x1 - x0;
1306 int h = y1 - y0;
1307
1308 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1309 } while (p-- != state.pagedims);
1310 }
1311
1312 static
1313 struct anchor { int n; int x; int y; int w; int h; }
1314 desttoanchor (fz_link_dest *dest)
1315 {
1316 int i;
1317 struct anchor a;
1318 struct pagedim *pdim = state.pagedims;
1319
1320 a.n = -1;
1321 a.x = 0;
1322 a.y = 0;
1323 for (i = 0; i < state.pagedimcount; ++i) {
1324 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1325 break;
1326 pdim = &state.pagedims[i];
1327 }
1328 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1329 fz_point p;
1330 if (dest->ld.gotor.flags & fz_link_flag_l_valid)
1331 p.x = dest->ld.gotor.lt.x;
1332 else
1333 p.x = 0.0;
1334 p.y = dest->ld.gotor.lt.y;
1335 fz_transform_point (&p, &pdim->lctm);
1336 a.y = p.y;
1337 a.x = p.x;
1338 }
1339 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1340 double x0, x1, y0, y1;
1341
1342 x0 = MIN (pdim->bounds.x0, pdim->bounds.x1);
1343 x1 = MAX (pdim->bounds.x0, pdim->bounds.x1);
1344 a.w = x1 - x0;
1345 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1346 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1347 a.h = y1 - y0;
1348 a.n = dest->ld.gotor.page;
1349 }
1350 return a;
1351 }
1352
1353 static void recurse_outline (fz_outline *outline, int level)
1354 {
1355 while (outline) {
1356 if (outline->dest.kind == FZ_LINK_GOTO) {
1357 struct anchor a = desttoanchor (&outline->dest);
1358
1359 if (a.n >= 0) {
1360 printd ("o %d %d %d %d %s",
1361 level, a.n, a.y, a.h, outline->title);
1362 }
1363 }
1364 else {
1365 printd ("emsg Unhandled outline kind %d for %s\n",
1366 outline->dest.kind, outline->title);
1367 }
1368 if (outline->down) {
1369 recurse_outline (outline->down, level + 1);
1370 }
1371 outline = outline->next;
1372 }
1373 }
1374
1375 static void process_outline (void)
1376 {
1377 fz_outline *outline;
1378
1379 if (!state.needoutline) return;
1380
1381 state.needoutline = 0;
1382 switch (state.type) {
1383 case DPDF:
1384 outline = pdf_load_outline (state.u.pdf);
1385 break;
1386 case DXPS:
1387 outline = xps_load_outline (state.u.xps);
1388 break;
1389 default:
1390 outline = NULL;
1391 break;
1392 }
1393 if (outline) {
1394 recurse_outline (outline, 0);
1395 fz_free_outline (state.ctx, outline);
1396 }
1397 }
1398
1399 static char *strofspan (fz_text_span *span)
1400 {
1401 char *p;
1402 char utf8[10];
1403 fz_text_char *ch;
1404 size_t size = 0, cap = 80;
1405
1406 p = malloc (cap + 1);
1407 if (!p) return NULL;
1408
1409 for (ch = span->text; ch < span->text + span->len; ++ch) {
1410 int n = fz_runetochar (utf8, ch->c);
1411 if (size + n > cap) {
1412 cap *= 2;
1413 p = realloc (p, cap + 1);
1414 if (!p) return NULL;
1415 }
1416
1417 memcpy (p + size, utf8, n);
1418 size += n;
1419 }
1420 p[size] = 0;
1421 return p;
1422 }
1423
1424 static int matchspan (regex_t *re, fz_text_page *page,
1425 fz_text_span *span, fz_matrix ctm,
1426 int stop, int pageno, double start)
1427 {
1428 int ret;
1429 char *p;
1430 regmatch_t rm;
1431 int a, b, c;
1432 fz_rect sb, eb;
1433 fz_point p1, p2, p3, p4;
1434
1435 p = strofspan (span);
1436 if (!p) return -1;
1437
1438 ret = regexec (re, p, 1, &rm, 0);
1439 if (ret) {
1440 free (p);
1441 if (ret != REG_NOMATCH) {
1442 size_t size;
1443 char errbuf[80];
1444 size = regerror (ret, re, errbuf, sizeof (errbuf));
1445 printd ("msg regexec error `%.*s'",
1446 (int) size, errbuf);
1447 return -1;
1448 }
1449 return 0;
1450 }
1451 else {
1452 int l = span->len;
1453
1454 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1455 c += fz_runelen (span->text[a].c);
1456 }
1457 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1458 c += fz_runelen (span->text[b].c);
1459 }
1460
1461 if (fz_runelen (span->text[b].c) > 1) {
1462 b = MAX (0, b-1);
1463 }
1464
1465 fz_text_char_bbox (&sb, span, a);
1466 fz_text_char_bbox (&eb, span, b);
1467
1468 p1.x = sb.x0;
1469 p1.y = sb.y0;
1470 p2.x = eb.x1;
1471 p2.y = sb.y0;
1472 p3.x = eb.x1;
1473 p3.y = eb.y1;
1474 p4.x = sb.x0;
1475 p4.y = eb.y1;
1476
1477 if (!stop) {
1478 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1479 pageno, 1,
1480 p1.x, p1.y,
1481 p2.x, p2.y,
1482 p3.x, p3.y,
1483 p4.x, p4.y);
1484
1485 printd ("progress 1 found at %d `%.*s' in %f sec",
1486 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1487 now () - start);
1488 }
1489 else {
1490 printd ("match %d %d %f %f %f %f %f %f %f %f",
1491 pageno, 2,
1492 p1.x, p1.y,
1493 p2.x, p2.y,
1494 p3.x, p3.y,
1495 p4.x, p4.y);
1496 }
1497 free (p);
1498 return 1;
1499 }
1500 }
1501
1502 static int compareblocks (const void *l, const void *r)
1503 {
1504 fz_text_block const *ls = l;
1505 fz_text_block const* rs = r;
1506 return ls->bbox.y0 - rs->bbox.y0;
1507 }
1508
1509 /* wishful thinking function */
1510 static void search (regex_t *re, int pageno, int y, int forward)
1511 {
1512 int i, j;
1513 fz_matrix ctm;
1514 fz_device *tdev;
1515 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1516 fz_text_page *text;
1517 fz_text_sheet *sheet;
1518 struct pagedim *pdim, *pdimprev;
1519 int stop = 0, niters = 0;
1520 double start, end;
1521
1522 if (!(state.type == DPDF || state.type == DXPS))
1523 return;
1524
1525 start = now ();
1526 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1527 if (niters++ == 5) {
1528 niters = 0;
1529 if (hasdata ()) {
1530 printd ("progress 1 attention requested aborting search at %d",
1531 pageno);
1532 stop = 1;
1533 }
1534 else {
1535 printd ("progress %f searching in page %d",
1536 (double) (pageno + 1) / state.pagecount,
1537 pageno);
1538 }
1539 }
1540 pdimprev = NULL;
1541 for (i = 0; i < state.pagedimcount; ++i) {
1542 pdim = &state.pagedims[i];
1543 if (pdim->pageno == pageno) {
1544 goto found;
1545 }
1546 if (pdim->pageno > pageno) {
1547 pdim = pdimprev;
1548 goto found;
1549 }
1550 pdimprev = pdim;
1551 }
1552 pdim = pdimprev;
1553 found:
1554
1555 sheet = fz_new_text_sheet (state.ctx);
1556 text = fz_new_text_page (state.ctx);
1557 tdev = fz_new_text_device (state.ctx, sheet, text);
1558
1559 switch (state.type) {
1560 case DPDF:
1561 u.ptr = NULL;
1562 fz_try (state.ctx) {
1563 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1564 trimctm (u.pdfpage, pdim - state.pagedims);
1565 fz_concat (&ctm, &pdim->tctm, &pdim->zoomctm);
1566 fz_begin_page (tdev, &fz_infinite_rect, &ctm);
1567 pdf_run_page (state.u.pdf, u.pdfpage, tdev, &ctm, NULL);
1568 fz_end_page (tdev);
1569 }
1570 fz_catch (state.ctx) {
1571 fz_free_device (tdev);
1572 u.ptr = NULL;
1573 goto nextiter;
1574 }
1575 break;
1576
1577 case DXPS:
1578 u.xpspage = xps_load_page (state.u.xps, pageno);
1579 xps_run_page (state.u.xps, u.xpspage, tdev, &pdim->ctm, NULL);
1580 break;
1581
1582 default:
1583 ARSERT (0 && state.type);
1584 }
1585
1586 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1587 fz_free_device (tdev);
1588
1589 for (j = 0; j < text->len; ++j) {
1590 int k;
1591 fz_page_block *pb;
1592 fz_text_block *block;
1593
1594 pb = &text->blocks[forward ? j : text->len - 1 - j];
1595 if (pb->type != FZ_PAGE_BLOCK_TEXT) continue;
1596 block = pb->u.text;
1597
1598 for (k = 0; k < block->len; ++k) {
1599 fz_text_line *line;
1600 fz_text_span *span;
1601
1602 if (forward) {
1603 line = &block->lines[k];
1604 if (line->bbox.y0 < y + 1) continue;
1605 }
1606 else {
1607 line = &block->lines[block->len - 1 - k];
1608 if (line->bbox.y0 > y - 1) continue;
1609 }
1610
1611 for (span = line->first_span; span; span = span->next) {
1612 switch (matchspan (re, text, span, ctm,
1613 stop, pageno, start)) {
1614 case 0: break;
1615 case 1: stop = 1; break;
1616 case -1: stop = 1; goto endloop;
1617 }
1618 }
1619 }
1620 }
1621 nextiter:
1622 if (forward) {
1623 pageno += 1;
1624 y = 0;
1625 }
1626 else {
1627 pageno -= 1;
1628 y = INT_MAX;
1629 }
1630 endloop:
1631 fz_free_text_page (state.ctx, text);
1632 fz_free_text_sheet (state.ctx, sheet);
1633 if (u.ptr) {
1634 state.freepage (u.ptr);
1635 }
1636 }
1637 end = now ();
1638 if (!stop) {
1639 printd ("progress 1 no matches %f sec", end - start);
1640 }
1641 printd ("clearrects");
1642 }
1643
1644 static void set_tex_params (int colorspace)
1645 {
1646 union {
1647 unsigned char b;
1648 unsigned int s;
1649 } endianness = {1};
1650
1651 switch (colorspace) {
1652 case 0:
1653 state.texiform = GL_RGBA8;
1654 state.texform = GL_RGBA;
1655 state.texty = GL_UNSIGNED_BYTE;
1656 state.colorspace = fz_device_rgb (state.ctx);
1657 break;
1658 case 1:
1659 state.texiform = GL_RGBA8;
1660 state.texform = GL_BGRA;
1661 state.texty = endianness.s > 1
1662 ? GL_UNSIGNED_INT_8_8_8_8
1663 : GL_UNSIGNED_INT_8_8_8_8_REV;
1664 state.colorspace = fz_device_bgr (state.ctx);
1665 break;
1666 case 2:
1667 state.texiform = GL_LUMINANCE_ALPHA;
1668 state.texform = GL_LUMINANCE_ALPHA;
1669 state.texty = GL_UNSIGNED_BYTE;
1670 state.colorspace = fz_device_gray (state.ctx);
1671 break;
1672 default:
1673 errx (1, "invalid colorspce %d", colorspace);
1674 }
1675 }
1676
1677 static void realloctexts (int texcount)
1678 {
1679 size_t size;
1680
1681 if (texcount == state.texcount) return;
1682
1683 if (texcount < state.texcount) {
1684 glDeleteTextures (state.texcount - texcount,
1685 state.texids + texcount);
1686 }
1687
1688 size = texcount * sizeof (*state.texids);
1689 state.texids = realloc (state.texids, size);
1690 if (!state.texids) {
1691 err (1, "realloc texids %" FMT_s, size);
1692 }
1693
1694 size = texcount * sizeof (*state.texowners);
1695 state.texowners = realloc (state.texowners, size);
1696 if (!state.texowners) {
1697 err (1, "realloc texowners %" FMT_s, size);
1698 }
1699 if (texcount > state.texcount) {
1700 int i;
1701
1702 glGenTextures (texcount - state.texcount,
1703 state.texids + state.texcount);
1704 for (i = state.texcount; i < texcount; ++i) {
1705 state.texowners[i].w = -1;
1706 state.texowners[i].slice = NULL;
1707 }
1708 }
1709 state.texcount = texcount;
1710 state.texindex = 0;
1711 }
1712
1713 static char *mbtoutf8 (char *s)
1714 {
1715 char *p, *r;
1716 wchar_t *tmp;
1717 size_t i, ret, len;
1718
1719 len = mbstowcs (NULL, s, strlen (s));
1720 if (len == 0) {
1721 return s;
1722 }
1723 else {
1724 if (len == (size_t) -1) {
1725 return s;
1726 }
1727 }
1728
1729 tmp = malloc (len * sizeof (wchar_t));
1730 if (!tmp) {
1731 return s;
1732 }
1733
1734 ret = mbstowcs (tmp, s, len);
1735 if (ret == (size_t) -1) {
1736 free (tmp);
1737 return s;
1738 }
1739
1740 len = 0;
1741 for (i = 0; i < ret; ++i) {
1742 len += fz_runelen (tmp[i]);
1743 }
1744
1745 p = r = malloc (len + 1);
1746 if (!r) {
1747 free (tmp);
1748 return s;
1749 }
1750
1751 for (i = 0; i < ret; ++i) {
1752 p += fz_runetochar (p, tmp[i]);
1753 }
1754 *p = 0;
1755 free (tmp);
1756 return r;
1757 }
1758
1759 CAMLprim value ml_mbtoutf8 (value s_v)
1760 {
1761 CAMLparam1 (s_v);
1762 CAMLlocal1 (ret_v);
1763 char *s, *r;
1764
1765 s = String_val (s_v);
1766 r = mbtoutf8 (s);
1767 if (r == s) {
1768 ret_v = s_v;
1769 }
1770 else {
1771 ret_v = caml_copy_string (r);
1772 free (r);
1773 }
1774 CAMLreturn (ret_v);
1775 }
1776
1777 static void * mainloop (void *unused)
1778 {
1779 char *p = NULL;
1780 int len, ret, oldlen = 0;
1781
1782 for (;;) {
1783 len = readlen ();
1784 if (len == 0) {
1785 errx (1, "readlen returned 0");
1786 }
1787
1788 if (oldlen < len + 1) {
1789 p = realloc (p, len + 1);
1790 if (!p) {
1791 err (1, "realloc %d failed", len + 1);
1792 }
1793 oldlen = len + 1;
1794 }
1795 readdata (p, len);
1796 p[len] = 0;
1797
1798 if (!strncmp ("open", p, 4)) {
1799 int wthack, off;
1800 char *password;
1801 char *filename;
1802 char *utf8filename;
1803 size_t filenamelen;
1804
1805 ret = sscanf (p + 5, " %d %d %n", &wthack, &state.cxack, &off);
1806 if (ret != 2) {
1807 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1808 }
1809
1810 filename = p + 5 + off;
1811 filenamelen = strlen (filename);
1812 password = filename + filenamelen + 1;
1813
1814 lock ("open");
1815 openxref (filename, password);
1816 pdfinfo ();
1817 initpdims ();
1818 unlock ("open");
1819
1820 if (!wthack) {
1821 utf8filename = mbtoutf8 (filename);
1822 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1823 if (utf8filename != filename) {
1824 free (utf8filename);
1825 }
1826 }
1827 state.needoutline = 1;
1828 }
1829 else if (!strncmp ("cs", p, 2)) {
1830 int i, colorspace;
1831
1832 ret = sscanf (p + 2, " %d", &colorspace);
1833 if (ret != 1) {
1834 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1835 }
1836 lock ("cs");
1837 set_tex_params (colorspace);
1838 for (i = 0; i < state.texcount; ++i) {
1839 state.texowners[i].w = -1;
1840 state.texowners[i].slice = NULL;
1841 }
1842 unlock ("cs");
1843 }
1844 else if (!strncmp ("freepage", p, 8)) {
1845 void *ptr;
1846
1847 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1848 if (ret != 1) {
1849 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1850 }
1851 freepage (ptr);
1852 }
1853 else if (!strncmp ("freetile", p, 8)) {
1854 void *ptr;
1855
1856 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1857 if (ret != 1) {
1858 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1859 }
1860 freetile (ptr);
1861 }
1862 else if (!strncmp ("search", p, 6)) {
1863 int icase, pageno, y, ret, len2, forward;
1864 char *pattern;
1865 regex_t re;
1866
1867 ret = sscanf (p + 6, " %d %d %d %d,%n",
1868 &icase, &pageno, &y, &forward, &len2);
1869 if (ret != 4) {
1870 errx (1, "malformed search `%s' ret=%d", p, ret);
1871 }
1872
1873 pattern = p + 6 + len2;
1874 ret = regcomp (&re, pattern,
1875 REG_EXTENDED | (icase ? REG_ICASE : 0));
1876 if (ret) {
1877 char errbuf[80];
1878 size_t size;
1879
1880 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1881 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1882 }
1883 else {
1884 search (&re, pageno, y, forward);
1885 regfree (&re);
1886 }
1887 }
1888 else if (!strncmp ("geometry", p, 8)) {
1889 int w, h, fitmodel;
1890
1891 printd ("clear");
1892 ret = sscanf (p + 8, " %d %d %d", &w, &h, &fitmodel);
1893 if (ret != 3) {
1894 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1895 }
1896
1897 lock ("geometry");
1898 state.h = h;
1899 if (w != state.w) {
1900 int i;
1901 state.w = w;
1902 for (i = 0; i < state.texcount; ++i) {
1903 state.texowners[i].slice = NULL;
1904 }
1905 }
1906 state.fitmodel = fitmodel;
1907 layout ();
1908 process_outline ();
1909
1910 state.gen++;
1911 unlock ("geometry");
1912 printd ("continue %d", state.pagecount);
1913 }
1914 else if (!strncmp ("reqlayout", p, 9)) {
1915 char *nameddest;
1916 int rotate, fitmodel, off, h;
1917
1918 printd ("clear");
1919 ret = sscanf (p + 9, " %d %d %d %n",
1920 &rotate, &fitmodel, &h, &off);
1921 if (ret != 3) {
1922 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1923 }
1924 lock ("reqlayout");
1925 if (state.rotate != rotate || state.fitmodel != fitmodel) {
1926 state.gen += 1;
1927 }
1928 state.rotate = rotate;
1929 state.fitmodel = fitmodel;
1930 state.h = h;
1931 layout ();
1932 process_outline ();
1933
1934 nameddest = p + 9 + off;
1935 if (state.type == DPDF && nameddest && *nameddest) {
1936 struct anchor a;
1937 fz_link_dest dest;
1938 pdf_obj *needle, *obj;
1939
1940 needle = pdf_new_string (state.u.pdf, nameddest,
1941 strlen (nameddest));
1942 obj = pdf_lookup_dest (state.u.pdf, needle);
1943 if (obj) {
1944 dest = pdf_parse_link_dest (state.u.pdf, FZ_LINK_GOTO, obj);
1945
1946 a = desttoanchor (&dest);
1947 if (a.n >= 0) {
1948 printd ("a %d %d %d", a.n, a.x, a.y);
1949 }
1950 else {
1951 printd ("emsg failed to parse destination `%s'\n",
1952 nameddest);
1953 }
1954 }
1955 else {
1956 printd ("emsg destination `%s' not found\n",
1957 nameddest);
1958 }
1959 pdf_drop_obj (needle);
1960 }
1961
1962 state.gen++;
1963 unlock ("reqlayout");
1964 printd ("continue %d", state.pagecount);
1965 }
1966 else if (!strncmp ("page", p, 4)) {
1967 double a, b;
1968 struct page *page;
1969 int pageno, pindex, ret;
1970
1971 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1972 if (ret != 2) {
1973 errx (1, "bad page line `%.*s' ret=%d", len, p, ret);
1974 }
1975
1976 lock ("page");
1977 a = now ();
1978 page = loadpage (pageno, pindex);
1979 b = now ();
1980 unlock ("page");
1981
1982 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1983 }
1984 else if (!strncmp ("tile", p, 4)) {
1985 int x, y, w, h, ret;
1986 struct page *page;
1987 struct tile *tile;
1988 double a, b;
1989 void *data;
1990
1991 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1992 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1993 if (ret != 6) {
1994 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1995 }
1996
1997 lock ("tile");
1998 a = now ();
1999 tile = rendertile (page, x, y, w, h, data);
2000 b = now ();
2001 unlock ("tile");
2002
2003 printd ("tile %d %d %" FMT_ptr " %u %f",
2004 x, y,
2005 FMT_ptr_cast2 (tile),
2006 tile->w * tile->h * tile->pixmap->n,
2007 b - a);
2008 }
2009 else if (!strncmp ("settrim", p, 7)) {
2010 fz_irect fuzz;
2011 int trimmargins;
2012
2013 ret = sscanf (p + 7, " %d %d %d %d %d",
2014 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
2015 if (ret != 5) {
2016 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
2017 }
2018 printd ("clear");
2019 lock ("settrim");
2020 state.trimmargins = trimmargins;
2021 state.needoutline = 1;
2022 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
2023 state.trimanew = 1;
2024 state.trimfuzz = fuzz;
2025 }
2026 state.pagedimcount = 0;
2027 free (state.pagedims);
2028 state.pagedims = NULL;
2029 initpdims ();
2030 layout ();
2031 process_outline ();
2032 unlock ("settrim");
2033 printd ("continue %d", state.pagecount);
2034 }
2035 else if (!strncmp ("sliceh", p, 6)) {
2036 int h;
2037
2038 ret = sscanf (p + 6, " %d", &h);
2039 if (ret != 1) {
2040 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
2041 }
2042 if (h != state.sliceheight) {
2043 int i;
2044
2045 state.sliceheight = h;
2046 for (i = 0; i < state.texcount; ++i) {
2047 state.texowners[i].w = -1;
2048 state.texowners[i].h = -1;
2049 state.texowners[i].slice = NULL;
2050 }
2051 }
2052 }
2053 else if (!strncmp ("interrupt", p, 9)) {
2054 printd ("vmsg interrupted");
2055 }
2056 else {
2057 errx (1, "unknown command %.*s", len, p);
2058 }
2059 }
2060 return 0;
2061 }
2062
2063 CAMLprim value ml_realloctexts (value texcount_v)
2064 {
2065 CAMLparam1 (texcount_v);
2066 int ok;
2067
2068 if (trylock ("ml_realloctexts")) {
2069 ok = 0;
2070 goto done;
2071 }
2072 realloctexts (Int_val (texcount_v));
2073 ok = 1;
2074 unlock ("ml_realloctexts");
2075
2076 done:
2077 CAMLreturn (Val_bool (ok));
2078 }
2079
2080 static void recti (int x0, int y0, int x1, int y1)
2081 {
2082 GLfloat *v = state.vertices;
2083
2084 glVertexPointer (2, GL_FLOAT, 0, v);
2085 v[0] = x0; v[1] = y0;
2086 v[2] = x1; v[3] = y0;
2087 v[4] = x0; v[5] = y1;
2088 v[6] = x1; v[7] = y1;
2089 glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
2090 }
2091
2092 static void showsel (struct page *page, int ox, int oy)
2093 {
2094 int seen = 0;
2095 fz_irect bbox;
2096 fz_rect rect;
2097 fz_text_line *line;
2098 fz_page_block *pageb;
2099 fz_text_block *block;
2100 struct mark first, last;
2101
2102 first = page->fmark;
2103 last = page->lmark;
2104
2105 if (!first.span || !last.span) return;
2106
2107 glEnable (GL_BLEND);
2108 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
2109 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
2110
2111 ox += state.pagedims[page->pdimno].bounds.x0;
2112 oy += state.pagedims[page->pdimno].bounds.y0;
2113 for (pageb = page->text->blocks;
2114 pageb < page->text->blocks + page->text->len;
2115 ++pageb) {
2116 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2117 block = pageb->u.text;
2118
2119 for (line = block->lines;
2120 line < block->lines + block->len;
2121 ++line) {
2122 fz_text_span *span;
2123 rect = fz_empty_rect;
2124
2125 for (span = line->first_span; span; span = span->next) {
2126 int i, j, k;
2127 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
2128
2129 j = 0;
2130 k = span->len - 1;
2131
2132 if (span == page->fmark.span && span == page->lmark.span) {
2133 seen = 1;
2134 j = MIN (first.i, last.i);
2135 k = MAX (first.i, last.i);
2136 }
2137 else if (span == first.span) {
2138 seen = 1;
2139 j = first.i;
2140 }
2141 else if (span == last.span) {
2142 seen = 1;
2143 k = last.i;
2144 }
2145
2146 if (seen) {
2147 for (i = j; i <= k; ++i) {
2148 fz_rect bbox;
2149 fz_union_rect (&rect,
2150 fz_text_char_bbox (&bbox, span, i));
2151 }
2152 fz_round_rect (&bbox, &rect);
2153 lprintf ("%d %d %d %d oy=%d ox=%d\n",
2154 bbox.x0,
2155 bbox.y0,
2156 bbox.x1,
2157 bbox.y1,
2158 oy, ox);
2159
2160 recti (bbox.x0 + ox, bbox.y0 + oy,
2161 bbox.x1 + ox, bbox.y1 + oy);
2162 if (span == last.span) {
2163 goto done;
2164 }
2165 }
2166 }
2167 }
2168 }
2169 done:
2170 glDisable (GL_BLEND);
2171 }
2172
2173 #include "glfont.c"
2174
2175 static void highlightlinks (struct page *page, int xoff, int yoff)
2176 {
2177 fz_matrix ctm, tm, pm;
2178 fz_link *link, *links;
2179 GLfloat *texcoords = state.texcoords;
2180 GLfloat *vertices = state.vertices;
2181
2182 switch (page->type) {
2183 case DPDF:
2184 links = page->u.pdfpage->links;
2185 break;
2186
2187 case DXPS:
2188 links = page->u.xpspage->links;
2189 break;
2190
2191 default:
2192 return;
2193 }
2194
2195 glEnable (GL_TEXTURE_1D);
2196 glEnable (GL_BLEND);
2197 glBindTexture (GL_TEXTURE_1D, state.stid);
2198
2199 xoff -= state.pagedims[page->pdimno].bounds.x0;
2200 yoff -= state.pagedims[page->pdimno].bounds.y0;
2201 fz_translate (&tm, xoff, yoff);
2202 pm = pagectm (page);
2203 fz_concat (&ctm, &pm, &tm);
2204
2205 glTexCoordPointer (1, GL_FLOAT, 0, texcoords);
2206 glVertexPointer (2, GL_FLOAT, 0, vertices);
2207
2208 for (link = links; link; link = link->next) {
2209 fz_point p1, p2, p3, p4;
2210
2211 p1.x = link->rect.x0;
2212 p1.y = link->rect.y0;
2213
2214 p2.x = link->rect.x1;
2215 p2.y = link->rect.y0;
2216
2217 p3.x = link->rect.x1;
2218 p3.y = link->rect.y1;
2219
2220 p4.x = link->rect.x0;
2221 p4.y = link->rect.y1;
2222
2223 fz_transform_point (&p1, &ctm);
2224 fz_transform_point (&p2, &ctm);
2225 fz_transform_point (&p3, &ctm);
2226 fz_transform_point (&p4, &ctm);
2227
2228 switch (link->dest.kind) {
2229 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2230 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2231 case FZ_LINK_LAUNCH: glColor3ub (0, 255, 0); break;
2232 default: glColor3ub (0, 0, 0); break;
2233 }
2234
2235 {
2236 float w, h, s, t;
2237
2238 w = p2.x - p1.x;
2239 h = p2.y - p1.y;
2240 t = sqrtf (w*w + h*h) * .25f;
2241
2242 w = p3.x - p2.x;
2243 h = p3.y - p2.y;
2244 s = sqrtf (w*w + h*h) * .25f;
2245
2246 texcoords[0] = 0; vertices[0] = p1.x; vertices[1] = p1.y;
2247 texcoords[1] = t; vertices[2] = p2.x; vertices[3] = p2.y;
2248
2249 texcoords[2] = 0; vertices[4] = p2.x; vertices[5] = p2.y;
2250 texcoords[3] = s; vertices[6] = p3.x; vertices[7] = p3.y;
2251
2252 texcoords[4] = 0; vertices[8] = p3.x; vertices[9] = p3.y;
2253 texcoords[5] = t; vertices[10] = p4.x; vertices[11] = p4.y;
2254
2255 texcoords[6] = 0; vertices[12] = p4.x; vertices[13] = p4.y;
2256 texcoords[7] = s; vertices[14] = p1.x; vertices[15] = p1.y;
2257 }
2258 glDrawArrays (GL_LINES, 0, 8);
2259 }
2260
2261 glDisable (GL_BLEND);
2262 glDisable (GL_TEXTURE_1D);
2263 }
2264
2265 static int compareslinks (const void *l, const void *r)
2266 {
2267 struct slink const *ls = l;
2268 struct slink const *rs = r;
2269 if (ls->bbox.y0 == rs->bbox.y0) {
2270 return rs->bbox.x0 - rs->bbox.x0;
2271 }
2272 return ls->bbox.y0 - rs->bbox.y0;
2273 }
2274
2275 static void droptext (struct page *page)
2276 {
2277 if (page->text) {
2278 fz_free_text_page (state.ctx, page->text);
2279 page->fmark.i = -1;
2280 page->lmark.i = -1;
2281 page->fmark.span = NULL;
2282 page->lmark.span = NULL;
2283 page->text = NULL;
2284 }
2285 if (page->sheet) {
2286 fz_free_text_sheet (state.ctx, page->sheet);
2287 page->sheet = NULL;
2288 }
2289 }
2290
2291 static void dropslinks (struct page *page)
2292 {
2293 if (page->slinks) {
2294 free (page->slinks);
2295 page->slinks = NULL;
2296 page->slinkcount = 0;
2297 }
2298 }
2299
2300 static void ensureslinks (struct page *page)
2301 {
2302 fz_matrix ctm;
2303 int i, count = 0;
2304 size_t slinksize = sizeof (*page->slinks);
2305 fz_link *link, *links;
2306
2307 if (state.gen != page->sgen) {
2308 dropslinks (page);
2309 page->sgen = state.gen;
2310 }
2311 if (page->slinks) return;
2312
2313 switch (page->type) {
2314 case DPDF:
2315 links = page->u.pdfpage->links;
2316 trimctm (page->u.pdfpage, page->pdimno);
2317 fz_concat (&ctm,
2318 &state.pagedims[page->pdimno].tctm,
2319 &state.pagedims[page->pdimno].ctm);
2320 break;
2321
2322 case DXPS:
2323 links = page->u.xpspage->links;
2324 ctm = state.pagedims[page->pdimno].ctm;
2325 break;
2326
2327 default:
2328 return;
2329 }
2330
2331 for (link = links; link; link = link->next) {
2332 count++;
2333 }
2334 if (count > 0) {
2335 page->slinkcount = count;
2336 page->slinks = calloc (count, slinksize);
2337 if (!page->slinks) {
2338 err (1, "realloc slinks %d", count);
2339 }
2340
2341 for (i = 0, link = links; link; ++i, link = link->next) {
2342 fz_rect rect;
2343
2344 rect = link->rect;
2345 fz_transform_rect (&rect, &ctm);
2346 page->slinks[i].link = link;
2347 fz_round_rect (&page->slinks[i].bbox, &rect);
2348 }
2349 qsort (page->slinks, count, slinksize, compareslinks);
2350 }
2351 }
2352
2353 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2354 static void fmt_linkn (char *s, unsigned int u)
2355 {
2356 unsigned int len; unsigned int q;
2357 int zma = 'z' - 'a' + 1;
2358 len = 1; q = u;
2359 while (q > zma - 1) { ++len; q /= zma; }
2360 if (s) {
2361 s += len;
2362 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2363 /* handles u == 0 */
2364 }
2365 s[len] = 0;
2366 }
2367
2368 static void highlightslinks (struct page *page, int xoff, int yoff,
2369 int noff, char *targ, int tlen, int hfsize)
2370 {
2371 int i;
2372 char buf[40];
2373 struct slink *slink;
2374 double x0, y0, x1, y1, w;
2375
2376 ensureslinks (page);
2377 glColor3ub (0xc3, 0xb0, 0x91);
2378 for (i = 0; i < page->slinkcount; ++i) {
2379 fmt_linkn (buf, i + noff);
2380 if (!tlen || !strncmp (targ, buf, tlen)) {
2381 slink = &page->slinks[i];
2382
2383 x0 = slink->bbox.x0 + xoff - 5;
2384 y1 = slink->bbox.y0 + yoff - 5;
2385 y0 = y1 + 10 + hfsize;
2386 w = measure_string (state.face, hfsize, buf);
2387 x1 = x0 + w + 10;
2388 recti (x0, y0, x1, y1);
2389 }
2390 }
2391
2392 glEnable (GL_BLEND);
2393 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2394 glEnable (GL_TEXTURE_2D);
2395 glColor3ub (0, 0, 0);
2396 for (i = 0; i < page->slinkcount; ++i) {
2397 fmt_linkn (buf, i + noff);
2398 if (!tlen || !strncmp (targ, buf, tlen)) {
2399 slink = &page->slinks[i];
2400
2401 x0 = slink->bbox.x0 + xoff;
2402 y0 = slink->bbox.y0 + yoff + hfsize;
2403 draw_string (state.face, hfsize, x0, y0, buf);
2404 }
2405 }
2406 glDisable (GL_TEXTURE_2D);
2407 glDisable (GL_BLEND);
2408 }
2409
2410
2411 static void uploadslice (struct tile *tile, struct slice *slice)
2412 {
2413 int offset;
2414 struct slice *slice1;
2415 unsigned char *texdata;
2416
2417 offset = 0;
2418 for (slice1 = tile->slices; slice != slice1; slice1++) {
2419 offset += slice1->h * tile->w * tile->pixmap->n;
2420 }
2421 if (slice->texindex != -1 && slice->texindex < state.texcount
2422 && state.texowners[slice->texindex].slice == slice) {
2423 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2424 }
2425 else {
2426 int subimage = 0;
2427 int texindex = state.texindex++ % state.texcount;
2428
2429 if (state.texowners[texindex].w == tile->w) {
2430 if (state.texowners[texindex].h >= slice->h) {
2431 subimage = 1;
2432 }
2433 else {
2434 state.texowners[texindex].h = slice->h;
2435 }
2436 }
2437 else {
2438 state.texowners[texindex].h = slice->h;
2439 }
2440
2441 state.texowners[texindex].w = tile->w;
2442 state.texowners[texindex].slice = slice;
2443 slice->texindex = texindex;
2444
2445 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2446 if (tile->pbo) {
2447 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2448 texdata = 0;
2449 }
2450 else {
2451 texdata = tile->pixmap->samples;
2452 }
2453 if (subimage) {
2454 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2455 0,
2456 0,
2457 0,
2458 tile->w,
2459 slice->h,
2460 state.texform,
2461 state.texty,
2462 texdata+offset
2463 );
2464 }
2465 else {
2466 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2467 0,
2468 state.texiform,
2469 tile->w,
2470 slice->h,
2471 0,
2472 state.texform,
2473 state.texty,
2474 texdata+offset
2475 );
2476 }
2477 if (tile->pbo) {
2478 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2479 }
2480 }
2481 }
2482
2483 CAMLprim value ml_begintiles (value unit_v)
2484 {
2485 CAMLparam1 (unit_v);
2486 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2487 glTexCoordPointer (2, GL_FLOAT, 0, state.texcoords);
2488 glVertexPointer (2, GL_FLOAT, 0, state.vertices);
2489 CAMLreturn (unit_v);
2490 }
2491
2492 CAMLprim value ml_endtiles (value unit_v)
2493 {
2494 CAMLparam1 (unit_v);
2495 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2496 CAMLreturn (unit_v);
2497 }
2498
2499 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2500 {
2501 CAMLparam2 (args_v, ptr_v);
2502 int dispx = Int_val (Field (args_v, 0));
2503 int dispy = Int_val (Field (args_v, 1));
2504 int dispw = Int_val (Field (args_v, 2));
2505 int disph = Int_val (Field (args_v, 3));
2506 int tilex = Int_val (Field (args_v, 4));
2507 int tiley = Int_val (Field (args_v, 5));
2508 char *s = String_val (ptr_v);
2509 struct tile *tile = parse_pointer ("ml_drawtile", s);
2510 int slicey, firstslice;
2511 struct slice *slice;
2512 GLfloat *texcoords = state.texcoords;
2513 GLfloat *vertices = state.vertices;
2514
2515 firstslice = tiley / tile->sliceheight;
2516 slice = &tile->slices[firstslice];
2517 slicey = tiley % tile->sliceheight;
2518
2519 while (disph > 0) {
2520 int dh;
2521
2522 dh = slice->h - slicey;
2523 dh = MIN (disph, dh);
2524 uploadslice (tile, slice);
2525
2526 texcoords[0] = tilex; texcoords[1] = slicey;
2527 texcoords[2] = tilex+dispw; texcoords[3] = slicey;
2528 texcoords[4] = tilex; texcoords[5] = slicey+dh;
2529 texcoords[6] = tilex+dispw; texcoords[7] = slicey+dh;
2530
2531 vertices[0] = dispx; vertices[1] = dispy;
2532 vertices[2] = dispx+dispw; vertices[3] = dispy;
2533 vertices[4] = dispx; vertices[5] = dispy+dh;
2534 vertices[6] = dispx+dispw; vertices[7] = dispy+dh;
2535
2536 glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
2537 dispy += dh;
2538 disph -= dh;
2539 slice++;
2540 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2541 slicey = 0;
2542 }
2543 CAMLreturn (Val_unit);
2544 }
2545
2546 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2547 value xoff_v, value yoff_v,
2548 value li_v)
2549 {
2550 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2551 int xoff = Int_val (xoff_v);
2552 int yoff = Int_val (yoff_v);
2553 int noff = Int_val (Field (li_v, 0));
2554 char *targ = String_val (Field (li_v, 1));
2555 int tlen = caml_string_length (Field (li_v, 1));
2556 int hfsize = Int_val (Field (li_v, 2));
2557 char *s = String_val (ptr_v);
2558 int hlmask = Int_val (hlinks_v);
2559 struct page *page = parse_pointer ("ml_postprocess", s);
2560
2561 if (!page->u.ptr) {
2562 /* deal with loadpage failed pages */
2563 goto done;
2564 }
2565
2566 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2567 if (trylock ("ml_postprocess")) {
2568 noff = 0;
2569 goto done;
2570 }
2571 if (hlmask & 2) {
2572 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2573 noff = page->slinkcount;
2574 }
2575 if (page->tgen == state.gen) {
2576 showsel (page, xoff, yoff);
2577 }
2578 unlock ("ml_postprocess");
2579
2580 done:
2581 CAMLreturn (Val_int (noff));
2582 }
2583
2584 static fz_link *getlink (struct page *page, int x, int y)
2585 {
2586 fz_point p;
2587 fz_matrix ctm;
2588 const fz_matrix *tctm;
2589 fz_link *link, *links;
2590
2591 switch (page->type) {
2592 case DPDF:
2593 trimctm (page->u.pdfpage, page->pdimno);
2594 tctm = &state.pagedims[page->pdimno].tctm;
2595 links = page->u.pdfpage->links;
2596 break;
2597
2598 case DXPS:
2599 tctm = &fz_identity;
2600 links = page->u.xpspage->links;
2601 break;
2602
2603 default:
2604 return NULL;
2605 }
2606 p.x = x;
2607 p.y = y;
2608
2609 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2610 fz_invert_matrix (&ctm, &ctm);
2611 fz_transform_point (&p, &ctm);
2612
2613 for (link = links; link; link = link->next) {
2614 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2615 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2616 return link;
2617 }
2618 }
2619 }
2620 return NULL;
2621 }
2622
2623 static void ensuretext (struct page *page)
2624 {
2625 if (state.gen != page->tgen) {
2626 droptext (page);
2627 page->tgen = state.gen;
2628 }
2629 if (!page->text) {
2630 fz_matrix ctm;
2631 fz_device *tdev;
2632
2633 page->text = fz_new_text_page (state.ctx);
2634 page->sheet = fz_new_text_sheet (state.ctx);
2635 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2636 ctm = pagectm (page);
2637 fz_begin_page (tdev, &fz_infinite_rect, &ctm);
2638 fz_run_display_list (page->dlist, tdev, &ctm, &fz_infinite_rect, NULL);
2639 qsort (page->text->blocks, page->text->len,
2640 sizeof (*page->text->blocks), compareblocks);
2641 fz_end_page (tdev);
2642 fz_free_device (tdev);
2643 }
2644 }
2645
2646 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2647 {
2648 CAMLparam2 (start_page_v, dir_v);
2649 CAMLlocal1 (ret_v);
2650 int i, dir = Int_val (dir_v);
2651 int start_page = Int_val (start_page_v);
2652 int end_page = dir > 0 ? state.pagecount : -1;
2653
2654 ret_v = Val_int (0);
2655 if (!(state.type == DPDF || state.type == DXPS)) {
2656 goto done;
2657 }
2658
2659 lock ("ml_findpage_with_links");
2660 for (i = start_page + dir; i != end_page; i += dir) {
2661 int found;
2662
2663 switch (state.type) {
2664 case DPDF:
2665 {
2666 pdf_page *page = NULL;
2667
2668 fz_try (state.ctx) {
2669 page = pdf_load_page (state.u.pdf, i);
2670 found = !!page->links;
2671 }
2672 fz_catch (state.ctx) {
2673 found = 0;
2674 }
2675 if (page) {
2676 freepdfpage (page);
2677 }
2678 }
2679 break;
2680 case DXPS:
2681 {
2682 xps_page *page = xps_load_page (state.u.xps, i);
2683 found = !!page->links;
2684 freexpspage (page);
2685 }
2686 break;
2687
2688 default:
2689 ARSERT (0 && "invalid document type");
2690 }
2691
2692 if (found) {
2693 ret_v = caml_alloc_small (1, 1);
2694 Field (ret_v, 0) = Val_int (i);
2695 goto unlock;
2696 }
2697 }
2698 unlock:
2699 unlock ("ml_findpage_with_links");
2700
2701 done:
2702 CAMLreturn (ret_v);
2703 }
2704
2705 enum { dir_first, dir_last};
2706 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2707
2708 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2709 {
2710 CAMLparam2 (ptr_v, dir_v);
2711 CAMLlocal2 (ret_v, pos_v);
2712 struct page *page;
2713 int dirtag, i, slinkindex;
2714 struct slink *found = NULL ,*slink;
2715 char *s = String_val (ptr_v);
2716
2717 page = parse_pointer ("ml_findlink", s);
2718 ret_v = Val_int (0);
2719 if (trylock ("ml_findlink")) {
2720 goto done;
2721 }
2722
2723 ensureslinks (page);
2724
2725 if (Is_block (dir_v)) {
2726 dirtag = Tag_val (dir_v);
2727 switch (dirtag) {
2728 case dir_first_visible:
2729 {
2730 int x0, y0, dir, first_index, last_index;
2731
2732 pos_v = Field (dir_v, 0);
2733 x0 = Int_val (Field (pos_v, 0));
2734 y0 = Int_val (Field (pos_v, 1));
2735 dir = Int_val (Field (pos_v, 2));
2736
2737 if (dir >= 0) {
2738 dir = 1;
2739 first_index = 0;
2740 last_index = page->slinkcount;
2741 }
2742 else {
2743 first_index = page->slinkcount - 1;
2744 last_index = -1;
2745 }
2746
2747 for (i = first_index; i != last_index; i += dir) {
2748 slink = &page->slinks[i];
2749 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2750 found = slink;
2751 break;
2752 }
2753 }
2754 }
2755 break;
2756
2757 case dir_left:
2758 slinkindex = Int_val (Field (dir_v, 0));
2759 found = &page->slinks[slinkindex];
2760 for (i = slinkindex - 1; i >= 0; --i) {
2761 slink = &page->slinks[i];
2762 if (slink->bbox.x0 < found->bbox.x0) {
2763 found = slink;
2764 break;
2765 }
2766 }
2767 break;
2768
2769 case dir_right:
2770 slinkindex = Int_val (Field (dir_v, 0));
2771 found = &page->slinks[slinkindex];
2772 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2773 slink = &page->slinks[i];
2774 if (slink->bbox.x0 > found->bbox.x0) {
2775 found = slink;
2776 break;
2777 }
2778 }
2779 break;
2780
2781 case dir_down:
2782 slinkindex = Int_val (Field (dir_v, 0));
2783 found = &page->slinks[slinkindex];
2784 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2785 slink = &page->slinks[i];
2786 if (slink->bbox.y0 >= found->bbox.y0) {
2787 found = slink;
2788 break;
2789 }
2790 }
2791 break;
2792
2793 case dir_up:
2794 slinkindex = Int_val (Field (dir_v, 0));
2795 found = &page->slinks[slinkindex];
2796 for (i = slinkindex - 1; i >= 0; --i) {
2797 slink = &page->slinks[i];
2798 if (slink->bbox.y0 <= found->bbox.y0) {
2799 found = slink;
2800 break;
2801 }
2802 }
2803 break;
2804 }
2805 }
2806 else {
2807 dirtag = Int_val (dir_v);
2808 switch (dirtag) {
2809 case dir_first:
2810 found = page->slinks;
2811 break;
2812
2813 case dir_last:
2814 if (page->slinks) {
2815 found = page->slinks + (page->slinkcount - 1);
2816 }
2817 break;
2818 }
2819 }
2820 if (found) {
2821 ret_v = caml_alloc_small (2, 1);
2822 Field (ret_v, 0) = Val_int (found - page->slinks);
2823 }
2824
2825 unlock ("ml_findlink");
2826 done:
2827 CAMLreturn (ret_v);
2828 }
2829
2830 enum { uuri, ugoto, utext, uunexpected,
2831 ulaunch, unamed, uremote, uremotedest };
2832
2833 #define LINKTOVAL \
2834 { \
2835 int pageno; \
2836 \
2837 switch (link->dest.kind) { \
2838 case FZ_LINK_GOTO: \
2839 { \
2840 fz_point p; \
2841 \
2842 pageno = link->dest.ld.gotor.page; \
2843 p.x = 0; \
2844 p.y = 0; \
2845 \
2846 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2847 p.y = link->dest.ld.gotor.lt.y; \
2848 fz_transform_point (&p, &pdim->lctm); \
2849 } \
2850 tup_v = caml_alloc_tuple (2); \
2851 ret_v = caml_alloc_small (1, ugoto); \
2852 Field (tup_v, 0) = Val_int (pageno); \
2853 Field (tup_v, 1) = Val_int (p.y); \
2854 Field (ret_v, 0) = tup_v; \
2855 } \
2856 break; \
2857 \
2858 case FZ_LINK_URI: \
2859 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2860 ret_v = caml_alloc_small (1, uuri); \
2861 Field (ret_v, 0) = str_v; \
2862 break; \
2863 \
2864 case FZ_LINK_LAUNCH: \
2865 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2866 ret_v = caml_alloc_small (1, ulaunch); \
2867 Field (ret_v, 0) = str_v; \
2868 break; \
2869 \
2870 case FZ_LINK_NAMED: \
2871 str_v = caml_copy_string (link->dest.ld.named.named); \
2872 ret_v = caml_alloc_small (1, unamed); \
2873 Field (ret_v, 0) = str_v; \
2874 break; \
2875 \
2876 case FZ_LINK_GOTOR: \
2877 { \
2878 int rty; \
2879 \
2880 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2881 pageno = link->dest.ld.gotor.page; \
2882 if (pageno == -1) { \
2883 gr_v = caml_copy_string (link->dest.ld.gotor.dest); \
2884 rty = uremotedest; \
2885 } \
2886 else { \
2887 gr_v = Val_int (pageno); \
2888 rty = uremote; \
2889 } \
2890 tup_v = caml_alloc_tuple (2); \
2891 ret_v = caml_alloc_small (1, rty); \
2892 Field (tup_v, 0) = str_v; \
2893 Field (tup_v, 1) = gr_v; \
2894 Field (ret_v, 0) = tup_v; \
2895 } \
2896 break; \
2897 \
2898 default: \
2899 { \
2900 char buf[80]; \
2901 \
2902 snprintf (buf, sizeof (buf), \
2903 "unhandled link kind %d", link->dest.kind); \
2904 str_v = caml_copy_string (buf); \
2905 ret_v = caml_alloc_small (1, uunexpected); \
2906 Field (ret_v, 0) = str_v; \
2907 } \
2908 break; \
2909 } \
2910 }
2911
2912 CAMLprim value ml_getlink (value ptr_v, value n_v)
2913 {
2914 CAMLparam2 (ptr_v, n_v);
2915 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
2916 fz_link *link;
2917 struct page *page;
2918 struct pagedim *pdim;
2919 char *s = String_val (ptr_v);
2920
2921 ret_v = Val_int (0);
2922 if (trylock ("ml_getlink")) {
2923 goto done;
2924 }
2925
2926 page = parse_pointer ("ml_getlink", s);
2927 ensureslinks (page);
2928 pdim = &state.pagedims[page->pdimno];
2929 link = page->slinks[Int_val (n_v)].link;
2930 LINKTOVAL;
2931
2932 unlock ("ml_getlink");
2933 done:
2934 CAMLreturn (ret_v);
2935 }
2936
2937 CAMLprim value ml_getlinkcount (value ptr_v)
2938 {
2939 CAMLparam1 (ptr_v);
2940 struct page *page;
2941 char *s = String_val (ptr_v);
2942
2943 page = parse_pointer ("ml_getlinkcount", s);
2944 CAMLreturn (Val_int (page->slinkcount));
2945 }
2946
2947 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2948 {
2949 CAMLparam2 (ptr_v, n_v);
2950 CAMLlocal1 (ret_v);
2951 struct page *page;
2952 struct slink *slink;
2953 char *s = String_val (ptr_v);
2954
2955 page = parse_pointer ("ml_getlinkrect", s);
2956 ret_v = caml_alloc_tuple (4);
2957 if (trylock ("ml_getlinkrect")) {
2958 Field (ret_v, 0) = Val_int (0);
2959 Field (ret_v, 1) = Val_int (0);
2960 Field (ret_v, 2) = Val_int (0);
2961 Field (ret_v, 3) = Val_int (0);
2962 goto done;
2963 }
2964 ensureslinks (page);
2965
2966 slink = &page->slinks[Int_val (n_v)];
2967 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2968 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2969 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2970 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2971 unlock ("ml_getlinkrect");
2972
2973 done:
2974 CAMLreturn (ret_v);
2975 }
2976
2977 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2978 {
2979 CAMLparam3 (ptr_v, x_v, y_v);
2980 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
2981 fz_link *link;
2982 struct page *page;
2983 char *s = String_val (ptr_v);
2984 int x = Int_val (x_v), y = Int_val (y_v);
2985 struct pagedim *pdim;
2986
2987 ret_v = Val_int (0);
2988 if (trylock ("ml_whatsunder")) {
2989 goto done;
2990 }
2991
2992 page = parse_pointer ("ml_whatsunder", s);
2993 pdim = &state.pagedims[page->pdimno];
2994 x += pdim->bounds.x0;
2995 y += pdim->bounds.y0;
2996 link = getlink (page, x, y);
2997 if (link) {
2998 LINKTOVAL;
2999 }
3000 else {
3001 fz_rect *b;
3002 fz_page_block *pageb;
3003 fz_text_block *block;
3004
3005 ensuretext (page);
3006 for (pageb = page->text->blocks;
3007 pageb < page->text->blocks + page->text->len;
3008 ++pageb) {
3009 fz_text_line *line;
3010 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3011 block = pageb->u.text;
3012
3013 b = &block->bbox;
3014 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3015 continue;
3016
3017 for (line = block->lines;
3018 line < block->lines + block->len;
3019 ++line) {
3020 fz_text_span *span;
3021
3022 b = &line->bbox;
3023 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3024 continue;
3025
3026 for (span = line->first_span; span; span = span->next) {
3027 int charnum;
3028
3029 b = &span->bbox;
3030 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3031 continue;
3032
3033 for (charnum = 0; charnum < span->len; ++charnum) {
3034 fz_rect bbox;
3035 fz_text_char_bbox (&bbox, span, charnum);
3036 b = &bbox;
3037
3038 if (x >= b->x0 && x <= b->x1
3039 && y >= b->y0 && y <= b->y1) {
3040 fz_text_style *style = span->text->style;
3041 const char *n2 =
3042 style->font && style->font->name
3043 ? style->font->name
3044 : "Span has no font name"
3045 ;
3046 FT_FaceRec *face = style->font->ft_face;
3047 if (face && face->family_name) {
3048 char *s;
3049 char *n1 = face->family_name;
3050 size_t l1 = strlen (n1);
3051 size_t l2 = strlen (n2);
3052
3053 if (l1 != l2 || memcmp (n1, n2, l1)) {
3054 s = malloc (l1 + l2 + 2);
3055 if (s) {
3056 memcpy (s, n2, l2);
3057 s[l2] = '=';
3058 memcpy (s + l2 + 1, n1, l1 + 1);
3059 str_v = caml_copy_string (s);
3060 free (s);
3061 }
3062 }
3063 }
3064 if (str_v == 0) {
3065 str_v = caml_copy_string (n2);
3066 }
3067 ret_v = caml_alloc_small (1, utext);
3068 Field (ret_v, 0) = str_v;
3069 goto unlock;
3070 }
3071 }
3072 }
3073 }
3074 }
3075 }
3076 unlock:
3077 unlock ("ml_whatsunder");
3078
3079 done:
3080 CAMLreturn (ret_v);
3081 }
3082
3083 enum { mark_page, mark_block, mark_line, mark_word };
3084
3085 static int uninteresting (int c)
3086 {
3087 return c == ' ' || c == '\n' || c == '\t' || c == '\n' || c == '\r'
3088 || ispunct (c);
3089 }
3090
3091 CAMLprim value ml_clearmark (value ptr_v)
3092 {
3093 CAMLparam1 (ptr_v);
3094 char *s = String_val (ptr_v);
3095 struct page *page;
3096
3097 if (trylock ("ml_clearmark")) {
3098 goto done;
3099 }
3100
3101 page = parse_pointer ("ml_clearmark", s);
3102 page->fmark.span = NULL;
3103 page->lmark.span = NULL;
3104 page->fmark.i = 0;
3105 page->lmark.i = 0;
3106
3107 unlock ("ml_clearmark");
3108 done:
3109 CAMLreturn (Val_unit);
3110 }
3111
3112 CAMLprim value ml_markunder (value ptr_v, value x_v, value y_v, value mark_v)
3113 {
3114 CAMLparam4 (ptr_v, x_v, y_v, mark_v);
3115 CAMLlocal1 (ret_v);
3116 fz_rect *b;
3117 struct page *page;
3118 fz_text_line *line;
3119 fz_page_block *pageb;
3120 fz_text_block *block;
3121 struct pagedim *pdim;
3122 int mark = Int_val (mark_v);
3123 char *s = String_val (ptr_v);
3124 int x = Int_val (x_v), y = Int_val (y_v);
3125
3126 ret_v = Val_bool (0);
3127 if (trylock ("ml_markunder")) {
3128 goto done;
3129 }
3130
3131 page = parse_pointer ("ml_markunder", s);
3132 pdim = &state.pagedims[page->pdimno];
3133
3134 ensuretext (page);
3135
3136 if (mark == mark_page) {
3137 int i;
3138 fz_page_block *pb1 = NULL, *pb2 = NULL;
3139
3140 for (i = 0; i < page->text->len; ++i) {
3141 if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
3142 pb1 = &page->text->blocks[i];
3143 break;
3144 }
3145 }
3146 if (!pb1) goto unlock;
3147
3148 for (i = page->text->len - 1; i >= 0; --i) {
3149 if (page->text->blocks[i].type == FZ_PAGE_BLOCK_TEXT) {
3150 pb2 = &page->text->blocks[i];
3151 break;
3152 }
3153 }
3154 if (!pb2) goto unlock;
3155
3156 block = pb1->u.text;
3157
3158 page->fmark.i = 0;
3159 page->fmark.span = block->lines->first_span;
3160
3161 block = pb2->u.text;
3162 line = &block->lines[block->len - 1];
3163 page->lmark.i = line->last_span->len - 1;
3164 page->lmark.span = line->last_span;
3165 ret_v = Val_bool (1);
3166 goto unlock;
3167 }
3168
3169 x += pdim->bounds.x0;
3170 y += pdim->bounds.y0;
3171
3172 for (pageb = page->text->blocks;
3173 pageb < page->text->blocks + page->text->len;
3174 ++pageb) {
3175 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3176 block = pageb->u.text;
3177
3178 b = &block->bbox;
3179 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3180 continue;
3181
3182 if (mark == mark_block) {
3183 page->fmark.i = 0;
3184 page->fmark.span = block->lines->first_span;
3185
3186 line = &block->lines[block->len - 1];
3187 page->lmark.i = line->last_span->len - 1;
3188 page->lmark.span = line->last_span;
3189 ret_v = Val_bool (1);
3190 goto unlock;
3191 }
3192
3193 for (line = block->lines;
3194 line < block->lines + block->len;
3195 ++line) {
3196 fz_text_span *span;
3197
3198 b = &line->bbox;
3199 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3200 continue;
3201
3202 if (mark == mark_line) {
3203 page->fmark.i = 0;
3204 page->fmark.span = line->first_span;
3205
3206 page->lmark.i = line->last_span->len - 1;
3207 page->lmark.span = line->last_span;
3208 ret_v = Val_bool (1);
3209 goto unlock;
3210 }
3211
3212 for (span = line->first_span; span; span = span->next) {
3213 int charnum;
3214
3215 b = &span->bbox;
3216 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3217 continue;
3218
3219 for (charnum = 0; charnum < span->len; ++charnum) {
3220 fz_rect bbox;
3221 fz_text_char_bbox (&bbox, span, charnum);
3222 b = &bbox;
3223
3224 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1) {
3225 /* unicode ftw */
3226 int charnum2, charnum3 = -1, charnum4 = -1;
3227
3228 if (uninteresting (span->text[charnum].c)) goto unlock;
3229
3230 for (charnum2 = charnum; charnum2 >= 0; --charnum2) {
3231 if (uninteresting (span->text[charnum2].c)) {
3232 charnum3 = charnum2 + 1;
3233 break;
3234 }
3235 }
3236 if (charnum3 == -1) charnum3 = 0;
3237
3238 for (charnum2 = charnum + 1;
3239 charnum2 < span->len;
3240 ++charnum2) {
3241 if (uninteresting (span->text[charnum2].c)) break;
3242 charnum4 = charnum2;
3243 }
3244 if (charnum4 == -1) goto unlock;
3245
3246 page->fmark.i = charnum3;
3247 page->fmark.span = span;
3248
3249 page->lmark.i = charnum4;
3250 page->lmark.span = span;
3251 ret_v = Val_bool (1);
3252 goto unlock;
3253 }
3254 }
3255 }
3256 }
3257 }
3258 unlock:
3259 if (!Bool_val (ret_v)) {
3260 page->fmark.span = NULL;
3261 page->lmark.span = NULL;
3262 page->fmark.i = 0;
3263 page->lmark.i = 0;
3264 }
3265 unlock ("ml_markunder");
3266
3267 done:
3268 CAMLreturn (ret_v);
3269 }
3270
3271 CAMLprim value ml_rectofblock (value ptr_v, value x_v, value y_v)
3272 {
3273 CAMLparam3 (ptr_v, x_v, y_v);
3274 CAMLlocal2 (ret_v, res_v);
3275 fz_rect *b = NULL;
3276 struct page *page;
3277 fz_page_block *pageb;
3278 struct pagedim *pdim;
3279 char *s = String_val (ptr_v);
3280 int x = Int_val (x_v), y = Int_val (y_v);
3281
3282 ret_v = Val_int (0);
3283 if (trylock ("ml_rectofblock")) {
3284 goto done;
3285 }
3286
3287 page = parse_pointer ("ml_rectofblock", s);
3288 pdim = &state.pagedims[page->pdimno];
3289 x += pdim->bounds.x0;
3290 y += pdim->bounds.y0;
3291
3292 ensuretext (page);
3293
3294 for (pageb = page->text->blocks;
3295 pageb < page->text->blocks + page->text->len;
3296 ++pageb) {
3297 switch (pageb->type) {
3298 case FZ_PAGE_BLOCK_TEXT:
3299 b = &pageb->u.text->bbox;
3300 break;
3301
3302 case FZ_PAGE_BLOCK_IMAGE:
3303 b = &pageb->u.image->bbox;
3304 break;
3305
3306 default:
3307 continue;
3308 }
3309
3310 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1)
3311 break;
3312 b = NULL;
3313 }
3314 if (b) {
3315 res_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3316 ret_v = caml_alloc_small (1, 1);
3317 Store_double_field (res_v, 0, b->x0);
3318 Store_double_field (res_v, 1, b->x1);
3319 Store_double_field (res_v, 2, b->y0);
3320 Store_double_field (res_v, 3, b->y1);
3321 Field (ret_v, 0) = res_v;
3322 }
3323 unlock ("ml_rectofblock");
3324
3325 done:
3326 CAMLreturn (ret_v);
3327 }
3328
3329 CAMLprim value ml_seltext (value ptr_v, value rect_v)
3330 {
3331 CAMLparam2 (ptr_v, rect_v);
3332 fz_rect b;
3333 struct page *page;
3334 struct pagedim *pdim;
3335 char *s = String_val (ptr_v);
3336 int i, x0, x1, y0, y1, fi, li;
3337 fz_page_block *pageb;
3338 fz_text_block *block;
3339 fz_text_span *span, *fspan, *lspan;
3340 fz_text_line *line, *fline = NULL, *lline = NULL;
3341
3342 if (trylock ("ml_seltext")) {
3343 goto done;
3344 }
3345
3346 page = parse_pointer ("ml_seltext", s);
3347 ensuretext (page);
3348
3349 pdim = &state.pagedims[page->pdimno];
3350 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
3351 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
3352 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
3353 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
3354
3355 if (0) {
3356 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3357 glColor3ub (128, 128, 128);
3358 recti (x0, y0, x1, y1);
3359 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3360 }
3361
3362 fi = page->fmark.i;
3363 fspan = page->fmark.span;
3364
3365 li = page->lmark.i;
3366 lspan = page->lmark.span;
3367
3368 for (pageb= page->text->blocks;
3369 pageb < page->text->blocks + page->text->len;
3370 ++pageb) {
3371 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3372 block = pageb->u.text;
3373 for (line = block->lines;
3374 line < block->lines + block->len;
3375 ++line) {
3376 fz_text_span *span;
3377
3378 for (span = line->first_span; span; span = span->next) {
3379 for (i = 0; i < span->len; ++i) {
3380 int selected = 0;
3381
3382 fz_text_char_bbox (&b, span, i);
3383
3384 if (x0 >= b.x0 && x0 <= b.x1
3385 && y0 >= b.y0 && y0 <= b.y1) {
3386 fspan = span;
3387 fline = line;
3388 fi = i;
3389 selected = 1;
3390 }
3391 if (x1 >= b.x0 && x1 <= b.x1
3392 && y1 >= b.y0 && y1 <= b.y1) {
3393 lspan = span;
3394 lline = line;
3395 li = i;
3396 selected = 1;
3397 }
3398 if (0 && selected) {
3399 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3400 glColor3ub (128, 128, 128);
3401 recti (b.x0, b.y0, b.x1, b.y1);
3402 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3403 }
3404 }
3405 }
3406 }
3407 }
3408 if (y1 < y0 || x1 < x0) {
3409 int swap = 0;
3410
3411 if (fspan == lspan) {
3412 swap = 1;
3413 }
3414 else {
3415 if (y1 < y0) {
3416 if (fline != lline) {
3417 swap = 1;
3418 }
3419 }
3420 }
3421
3422 if (swap) {
3423 i = fi;
3424 span = fspan;
3425
3426 fi = li;
3427 fspan = lspan;
3428
3429 li = i;
3430 lspan = span;
3431 }
3432 }
3433
3434 page->fmark.i = fi;
3435 page->fmark.span = fspan;
3436
3437 page->lmark.i = li;
3438 page->lmark.span = lspan;
3439
3440 unlock ("ml_seltext");
3441
3442 done:
3443 CAMLreturn (Val_unit);
3444 }
3445
3446 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
3447 {
3448 char buf[4];
3449 int i, len, ret;
3450
3451 for (i = a; i <= b; ++i) {
3452 len = fz_runetochar (buf, span->text[i].c);
3453 ret = fwrite (buf, len, 1, f);
3454
3455 if (ret != 1) {
3456 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
3457 len, ret, strerror (errno));
3458 return -1;
3459 }
3460 }
3461 return 0;
3462 }
3463
3464 #ifdef __CYGWIN__
3465 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
3466 {
3467 caml_failwith ("ml_popen not implemented under Cygwin");
3468 }
3469 #else
3470 CAMLprim value ml_popen (value command_v, value fds_v)
3471 {
3472 CAMLparam2 (command_v, fds_v);
3473 CAMLlocal2 (l_v, tup_v);
3474 int ret;
3475 char *msg = NULL;
3476 value earg_v = Nothing;
3477 posix_spawnattr_t attr;
3478 posix_spawn_file_actions_t fa;
3479 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
3480
3481 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3482 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3483 }
3484
3485 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3486 msg = "posix_spawnattr_init";
3487 goto fail1;
3488 }
3489
3490 #ifdef POSIX_SPAWN_USEVFORK
3491 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3492 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3493 goto fail;
3494 }
3495 #endif
3496
3497 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3498 int fd1, fd2;
3499
3500 tup_v = Field (l_v, 0);
3501 fd1 = Int_val (Field (tup_v, 0));
3502 fd2 = Int_val (Field (tup_v, 1));
3503 if (fd2 < 0) {
3504 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3505 msg = "posix_spawn_file_actions_addclose";
3506 earg_v = tup_v;
3507 goto fail;
3508 }
3509 }
3510 else {
3511 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3512 msg = "posix_spawn_file_actions_adddup2";
3513 earg_v = tup_v;
3514 goto fail;
3515 }
3516 }
3517 }
3518
3519 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
3520 msg = "posix_spawn";
3521 goto fail;
3522 }
3523
3524 fail:
3525 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3526 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3527 }
3528
3529 fail1:
3530 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3531 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3532 strerror (ret));
3533 }
3534
3535 if (msg)
3536 unix_error (ret, msg, earg_v);
3537
3538 CAMLreturn (Val_unit);
3539 }
3540 #endif
3541
3542 CAMLprim value ml_copysel (value fd_v, value ptr_v, value clear_v)
3543 {
3544 CAMLparam3 (fd_v, ptr_v, clear_v);
3545 FILE *f;
3546 int seen = 0;
3547 struct page *page;
3548 fz_text_line *line;
3549 fz_page_block *pageb;
3550 fz_text_block *block;
3551 int fd = Int_val (fd_v);
3552 char *s = String_val (ptr_v);
3553 int clear = Bool_val (clear_v);
3554
3555 if (trylock ("ml_copysel")) {
3556 goto done;
3557 }
3558
3559 page = parse_pointer ("ml_sopysel", s);
3560
3561 if (!page->fmark.span || !page->lmark.span) {
3562 fprintf (stderr, "nothing to copy\n");
3563 goto unlock;
3564 }
3565
3566 f = fdopen (fd, "w");
3567 if (!f) {
3568 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3569 strerror (errno));
3570 f = stdout;
3571 }
3572
3573 for (pageb = page->text->blocks;
3574 pageb < page->text->blocks + page->text->len;
3575 ++pageb) {
3576 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3577 block = pageb->u.text;
3578 for (line = block->lines;
3579 line < block->lines + block->len;
3580 ++line) {
3581 fz_text_span *span;
3582
3583 for (span = line->first_span; span; span = span->next) {
3584 int a, b;
3585
3586 seen |= span == page->fmark.span || span == page->lmark.span;
3587 a = span == page->fmark.span ? page->fmark.i : 0;
3588 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3589
3590 if (seen) {
3591 if (pipespan (f, span, a, b)) {
3592 goto close;
3593 }
3594 if (span == line->last_span) {
3595 if (putc ('\n', f) == EOF) {
3596 fprintf (stderr,
3597 "failed break line on sel pipe: %s\n",
3598 strerror (errno));
3599 goto close;
3600 }
3601 }
3602 if (span == page->lmark.span) {
3603 goto endloop;
3604 }
3605 }
3606 }
3607 }
3608 }
3609 endloop:
3610 if (clear) {
3611 page->lmark.span = NULL;
3612 page->fmark.span = NULL;
3613 }
3614
3615 close:
3616 if (f != stdout) {
3617 int ret = fclose (f);
3618 fd = -1;
3619 if (ret == -1) {
3620 if (errno != ECHILD) {
3621 fprintf (stderr, "failed to close sel pipe: %s\n",
3622 strerror (errno));
3623 }
3624 }
3625 }
3626 unlock:
3627 unlock ("ml_copysel");
3628
3629 done:
3630 if (fd >= 0) {
3631 if (close (fd)) {
3632 fprintf (stderr, "failed to close sel pipe: %s\n",
3633 strerror (errno));
3634 }
3635 }
3636 CAMLreturn (Val_unit);
3637 }
3638
3639 CAMLprim value ml_getpdimrect (value pagedimno_v)
3640 {
3641 CAMLparam1 (pagedimno_v);
3642 CAMLlocal1 (ret_v);
3643 int pagedimno = Int_val (pagedimno_v);
3644 fz_rect box;
3645
3646 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3647 if (trylock ("ml_getpdimrect")) {
3648 box = fz_empty_rect;
3649 }
3650 else {
3651 box = state.pagedims[pagedimno].mediabox;
3652 unlock ("ml_getpdimrect");
3653 }
3654
3655 Store_double_field (ret_v, 0, box.x0);
3656 Store_double_field (ret_v, 1, box.x1);
3657 Store_double_field (ret_v, 2, box.y0);
3658 Store_double_field (ret_v, 3, box.y1);
3659
3660 CAMLreturn (ret_v);
3661 }
3662
3663 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3664 value dw_v, value cols_v)
3665 {
3666 CAMLparam3 (winw_v, winh_v, dw_v);
3667 CAMLlocal1 (ret_v);
3668 int i;
3669 double zoom = -1.;
3670 double maxh = 0.0;
3671 struct pagedim *p;
3672 double winw = Int_val (winw_v);
3673 double winh = Int_val (winh_v);
3674 double dw = Int_val (dw_v);
3675 double cols = Int_val (cols_v);
3676 double pw = 1.0, ph = 1.0;
3677
3678 if (trylock ("ml_zoom_for_height")) {
3679 goto done;
3680 }
3681
3682 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3683 double w = p->pagebox.x1 / cols;
3684 double h = p->pagebox.y1;
3685 if (h > maxh) {
3686 maxh = h;
3687 ph = h;
3688 if (state.fitmodel != FitProportional) pw = w;
3689 }
3690 if ((state.fitmodel == FitProportional) && w > pw) pw = w;
3691 }
3692
3693 zoom = (((winh / ph) * pw) + dw) / winw;
3694 unlock ("ml_zoom_for_height");
3695 done:
3696 ret_v = caml_copy_double (zoom);
3697 CAMLreturn (ret_v);
3698 }
3699
3700 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3701 {
3702 CAMLparam4 (pt_v, x_v, y_v, string_v);
3703 CAMLlocal1 (ret_v);
3704 int pt = Int_val(pt_v);
3705 int x = Int_val (x_v);
3706 int y = Int_val (y_v);
3707 double w;
3708
3709 w = draw_string (state.face, pt, x, y, String_val (string_v));
3710 ret_v = caml_copy_double (w);
3711 CAMLreturn (ret_v);
3712 }
3713
3714 CAMLprim value ml_measure_string (value pt_v, value string_v)
3715 {
3716 CAMLparam2 (pt_v, string_v);
3717 CAMLlocal1 (ret_v);
3718 int pt = Int_val (pt_v);
3719 double w;
3720
3721 w = measure_string (state.face, pt, String_val (string_v));
3722 ret_v = caml_copy_double (w);
3723 CAMLreturn (ret_v);
3724 }
3725
3726 CAMLprim value ml_getpagebox (value opaque_v)
3727 {
3728 CAMLparam1 (opaque_v);
3729 CAMLlocal1 (ret_v);
3730 fz_rect rect;
3731 fz_irect bbox;
3732 fz_matrix ctm;
3733 fz_device *dev;
3734 char *s = String_val (opaque_v);
3735 struct page *page = parse_pointer ("ml_getpagebox", s);
3736
3737 ret_v = caml_alloc_tuple (4);
3738 dev = fz_new_bbox_device (state.ctx, &rect);
3739 dev->hints |= FZ_IGNORE_SHADE;
3740
3741 switch (page->type) {
3742 case DPDF:
3743 ctm = pagectm (page);
3744 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, &ctm, NULL);
3745 break;
3746
3747 case DXPS:
3748 ctm = pagectm (page);
3749 xps_run_page (state.u.xps, page->u.xpspage, dev, &ctm, NULL);
3750 break;
3751
3752 default:
3753 rect = fz_infinite_rect;
3754 break;
3755 }
3756
3757 fz_free_device (dev);
3758 fz_round_rect (&bbox, &rect);
3759 Field (ret_v, 0) = Val_int (bbox.x0);
3760 Field (ret_v, 1) = Val_int (bbox.y0);
3761 Field (ret_v, 2) = Val_int (bbox.x1);
3762 Field (ret_v, 3) = Val_int (bbox.y1);
3763
3764 CAMLreturn (ret_v);
3765 }
3766
3767 CAMLprim value ml_setaalevel (value level_v)
3768 {
3769 CAMLparam1 (level_v);
3770
3771 state.aalevel = Int_val (level_v);
3772 CAMLreturn (Val_unit);
3773 }
3774
3775 #undef pixel
3776 #include <X11/Xlib.h>
3777 #include <GL/glx.h>
3778
3779 static struct {
3780 Display *dpy;
3781 GLXContext ctx;
3782 GLXDrawable drawable;
3783 } glx;
3784
3785 #include "keysym2ucs.c"
3786
3787 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3788 {
3789 CAMLparam1 (keysym_v);
3790 CAMLlocal1 (str_v);
3791 KeySym keysym = Int_val (keysym_v);
3792 Rune rune;
3793 int len;
3794 char buf[5];
3795
3796 rune = keysym2ucs (keysym);
3797 len = fz_runetochar (buf, rune);
3798 buf[len] = 0;
3799 str_v = caml_copy_string (buf);
3800 CAMLreturn (str_v);
3801 }
3802
3803 CAMLprim value ml_glx (value win_v)
3804 {
3805 CAMLparam1 (win_v);
3806 XVisualInfo *visual;
3807 int screen, wid = Int_val (win_v);
3808 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3809
3810 glx.dpy = XOpenDisplay (NULL);
3811 if (!glx.dpy) {
3812 caml_failwith ("XOpenDisplay");
3813 }
3814
3815 screen = DefaultScreen (glx.dpy);
3816 visual = glXChooseVisual (glx.dpy, screen, attributes);
3817 if (!visual) {
3818 XCloseDisplay (glx.dpy);
3819 glx.dpy = NULL;
3820 caml_failwith ("glXChooseVisual");
3821 }
3822
3823 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3824 XFree (visual);
3825 if (!glx.ctx) {
3826 XCloseDisplay (glx.dpy);
3827 glx.dpy = NULL;
3828 caml_failwith ("glXCreateContext");
3829 }
3830
3831 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3832 glXDestroyContext (glx.dpy, glx.ctx);
3833 XCloseDisplay (glx.dpy);
3834 glx.dpy = NULL;
3835 glx.ctx = NULL;
3836 caml_failwith ("glXMakeCurrent");
3837 }
3838 glx.drawable = wid;
3839 CAMLreturn (Val_unit);
3840 }
3841
3842 CAMLprim value ml_swapb (value unit_v)
3843 {
3844 CAMLparam1 (unit_v);
3845 glXSwapBuffers (glx.dpy, glx.drawable);
3846 CAMLreturn (Val_unit);
3847 }
3848
3849 CAMLprim value ml_glxsync (value unit_v)
3850 {
3851 CAMLparam1 (unit_v);
3852 if (glx.dpy && glx.ctx) {
3853 glXWaitX ();
3854 glXWaitGL ();
3855 }
3856 CAMLreturn (Val_unit);
3857 }
3858
3859 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3860 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3861
3862 CAMLprim value ml_platform (value unit_v)
3863 {
3864 CAMLparam1 (unit_v);
3865 int platid = piunknown;
3866
3867 #if defined __linux__
3868 platid = pilinux;
3869 #elif defined __CYGWIN__
3870 platid = picygwin;
3871 #elif defined __DragonFly__
3872 platid = pidragonflybsd;
3873 #elif defined __FreeBSD__
3874 platid = pifreebsd;
3875 #elif defined __OpenBSD__
3876 platid = piopenbsd;
3877 #elif defined __NetBSD__
3878 platid = pinetbsd;
3879 #elif defined __sun__
3880 platid = pisun;
3881 #elif defined __APPLE__
3882 platid = piosx;
3883 #endif
3884 CAMLreturn (Val_int (platid));
3885 }
3886
3887 CAMLprim value ml_cloexec (value fd_v)
3888 {
3889 CAMLparam1 (fd_v);
3890 int fd = Int_val (fd_v);
3891
3892 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3893 uerror ("fcntl", Nothing);
3894 }
3895 CAMLreturn (Val_unit);
3896 }
3897
3898 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3899 {
3900 CAMLparam2 (w_v, h_v);
3901 CAMLlocal1 (ret_v);
3902 struct pbo *pbo;
3903 int w = Int_val (w_v);
3904 int h = Int_val (h_v);
3905 int cs = Int_val (cs_v);
3906
3907 if (state.pbo_usable) {
3908 pbo = calloc (sizeof (*pbo), 1);
3909 if (!pbo) {
3910 err (1, "calloc pbo");
3911 }
3912
3913 switch (cs) {
3914 case 0:
3915 case 1:
3916 pbo->size = w*h*4;
3917 break;
3918 case 2:
3919 pbo->size = w*h*2;
3920 break;
3921 default:
3922 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3923 }
3924
3925 state.glGenBuffersARB (1, &pbo->id);
3926 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3927 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3928 NULL, GL_STREAM_DRAW);
3929 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3930 GL_READ_WRITE);
3931 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3932 if (!pbo->ptr) {
3933 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3934 state.glDeleteBuffersARB (1, &pbo->id);
3935 free (pbo);
3936 ret_v = caml_copy_string ("0");
3937 }
3938 else {
3939 int res;
3940 char *s;
3941
3942 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3943 if (res < 0) {
3944 err (1, "snprintf %" FMT_ptr " failed", pbo);
3945 }
3946 s = malloc (res+1);
3947 if (!s) {
3948 err (1, "malloc %d bytes failed", res+1);
3949 }
3950 res = sprintf (s, "%" FMT_ptr, pbo);
3951 if (res < 0) {
3952 err (1, "sprintf %" FMT_ptr " failed", pbo);
3953 }
3954 ret_v = caml_copy_string (s);
3955 free (s);
3956 }
3957 }
3958 else {
3959 ret_v = caml_copy_string ("0");
3960 }
3961 CAMLreturn (ret_v);
3962 }
3963
3964 CAMLprim value ml_freepbo (value s_v)
3965 {
3966 CAMLparam1 (s_v);
3967 char *s = String_val (s_v);
3968 struct tile *tile = parse_pointer ("ml_freepbo", s);
3969
3970 if (tile->pbo) {
3971 state.glDeleteBuffersARB (1, &tile->pbo->id);
3972 tile->pbo->id = -1;
3973 tile->pbo->ptr = NULL;
3974 tile->pbo->size = -1;
3975 }
3976 CAMLreturn (Val_unit);
3977 }
3978
3979 CAMLprim value ml_unmappbo (value s_v)
3980 {
3981 CAMLparam1 (s_v);
3982 char *s = String_val (s_v);
3983 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3984
3985 if (tile->pbo) {
3986 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3987 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3988 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3989 }
3990 tile->pbo->ptr = NULL;
3991 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3992 }
3993 CAMLreturn (Val_unit);
3994 }
3995
3996 static void setuppbo (void)
3997 {
3998 #define GGPA(n) (*(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n))
3999 state.pbo_usable = GGPA (glBindBufferARB)
4000 && GGPA (glUnmapBufferARB)
4001 && GGPA (glMapBufferARB)
4002 && GGPA (glBufferDataARB)
4003 && GGPA (glGenBuffersARB)
4004 && GGPA (glDeleteBuffersARB);
4005 #undef GGPA
4006 }
4007
4008 CAMLprim value ml_pbo_usable (value unit_v)
4009 {
4010 CAMLparam1 (unit_v);
4011 CAMLreturn (Val_bool (state.pbo_usable));
4012 }
4013
4014 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
4015 {
4016 CAMLparam3 (ptr_v, x_v, y_v);
4017 CAMLlocal2 (ret_v, tup_v);
4018 struct page *page;
4019 char *s = String_val (ptr_v);
4020 int x = Int_val (x_v), y = Int_val (y_v);
4021 struct pagedim *pdim;
4022 fz_point p;
4023 fz_matrix ctm;
4024
4025 page = parse_pointer ("ml_unproject", s);
4026 pdim = &state.pagedims[page->pdimno];
4027
4028 ret_v = Val_int (0);
4029 if (trylock ("ml_unproject")) {
4030 goto done;
4031 }
4032
4033 switch (page->type) {
4034 case DPDF:
4035 trimctm (page->u.pdfpage, page->pdimno);
4036 break;
4037
4038 default:
4039 break;
4040 }
4041 p.x = x;
4042 p.y = y;
4043
4044 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
4045 fz_invert_matrix (&ctm, &ctm);
4046 fz_transform_point (&p, &ctm);
4047
4048 tup_v = caml_alloc_tuple (2);
4049 ret_v = caml_alloc_small (1, 1);
4050 Field (tup_v, 0) = Val_int (p.x);
4051 Field (tup_v, 1) = Val_int (p.y);
4052 Field (ret_v, 0) = tup_v;
4053
4054 unlock ("ml_unproject");
4055 done:
4056 CAMLreturn (ret_v);
4057 }
4058
4059 static void makestippletex (void)
4060 {
4061 const char pixels[] = "\xff\xff\0\0";
4062 glGenTextures (1, &state.stid);
4063 glBindTexture (GL_TEXTURE_1D, state.stid);
4064 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
4065 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
4066 glTexImage1D (
4067 GL_TEXTURE_1D,
4068 0,
4069 GL_ALPHA,
4070 4,
4071 0,
4072 GL_ALPHA,
4073 GL_UNSIGNED_BYTE,
4074 pixels
4075 );
4076 }
4077
4078 CAMLprim value ml_fz_version (value unit_v)
4079 {
4080 return caml_copy_string (FZ_VERSION);
4081 }
4082
4083 CAMLprim value ml_init (value pipe_v, value params_v)
4084 {
4085 CAMLparam2 (pipe_v, params_v);
4086 CAMLlocal2 (trim_v, fuzz_v);
4087 int ret;
4088 int texcount;
4089 char *fontpath;
4090 int colorspace;
4091 int mustoresize;
4092 int haspboext;
4093 struct sigaction sa;
4094
4095 state.cr = Int_val (Field (pipe_v, 0));
4096 state.cw = Int_val (Field (pipe_v, 1));
4097 state.rotate = Int_val (Field (params_v, 0));
4098 state.fitmodel = Int_val (Field (params_v, 1));
4099 trim_v = Field (params_v, 2);
4100 texcount = Int_val (Field (params_v, 3));
4101 state.sliceheight = Int_val (Field (params_v, 4));
4102 mustoresize = Int_val (Field (params_v, 5));
4103 colorspace = Int_val (Field (params_v, 6));
4104 fontpath = String_val (Field (params_v, 7));
4105
4106 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
4107 if (!state.trimcachepath) {
4108 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
4109 strerror (errno));
4110 }
4111 haspboext = Bool_val (Field (params_v, 9));
4112
4113 state.ctx = fz_new_context (NULL, NULL, mustoresize);
4114
4115 state.trimmargins = Bool_val (Field (trim_v, 0));
4116 fuzz_v = Field (trim_v, 1);
4117 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
4118 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
4119 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
4120 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
4121
4122 set_tex_params (colorspace);
4123
4124 if (*fontpath) {
4125 state.face = load_font (fontpath);
4126 }
4127 else {
4128 unsigned int len;
4129 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
4130
4131 state.face = load_builtin_font (base, len);
4132 }
4133 if (!state.face) _exit (1);
4134
4135 realloctexts (texcount);
4136
4137 if (haspboext) {
4138 setuppbo ();
4139 }
4140
4141 makestippletex ();
4142
4143 #ifdef __CYGWIN__
4144 sa.sa_handler = SIG_IGN;
4145 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
4146 #else
4147 sa.sa_handler = SIG_DFL;
4148 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
4149 #endif
4150 if (sigemptyset (&sa.sa_mask)) {
4151 err (1, "sigemptyset");
4152 }
4153 if (sigaction (SIGCHLD, &sa, NULL)) {
4154 err (1, "sigaction");
4155 }
4156
4157 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
4158 if (ret) {
4159 errx (1, "pthread_create: %s", strerror (ret));
4160 }
4161
4162 CAMLreturn (Val_unit);
4163 }
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