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Wish i had a better idea how to do that
[llpp.git] / link.c
blob10f7df7e6f0f98f212525834b727f1e50d620321
1 /* lots of code c&p-ed directly from mupdf */
2 #include <errno.h>
3 #include <stdio.h>
4 #include <ctype.h>
5 #include <string.h>
6 #include <stdlib.h>
7 #include <signal.h>
8 #include <wchar.h>
9
10 #include <unistd.h>
11 #include <pthread.h>
12 #include <sys/time.h>
13 #include <sys/types.h>
14 #include <sys/ioctl.h>
15
16 #ifdef __CYGWIN__
17 #include <cygwin/socket.h> /* FIONREAD */
18 #else
19 #include <spawn.h>
20 #endif
21
22 #include <regex.h>
23 #include <stdarg.h>
24 #include <limits.h>
25
26 #include <GL/gl.h>
27
28 #include <caml/fail.h>
29 #include <caml/alloc.h>
30 #include <caml/memory.h>
31 #include <caml/unixsupport.h>
32
33 #include <fitz.h>
34 #include <mupdf.h>
35 #include <mupdf-internal.h>
36 #include <muxps.h>
37 #include <muxps-internal.h>
38 #include <mucbz.h>
39
40 #include FT_FREETYPE_H
41
42 #define PIGGYBACK
43
44 #ifndef __USE_GNU
45 extern char **environ;
46 #endif
47
48 #define MIN(a,b) ((a) < (b) ? (a) : (b))
49 #define MAX(a,b) ((a) > (b) ? (a) : (b))
50
51 #if defined __GNUC__
52 #define NORETURN_ATTR __attribute__ ((noreturn))
53 #define UNUSED_ATTR __attribute__ ((unused))
54 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
55 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
56 #else
57 #define NORETURN_ATTR
58 #define UNUSED_ATTR
59 #define OPTIMIZE_ATTR(n)
60 #define GCC_FMT_ATTR(a, b)
61 #endif
62
63 #define FMT_s "zu"
64
65 #define FMT_ptr "p"
66 #define FMT_ptr_cast(p) (p)
67 #define FMT_ptr_cast2(p) (p)
68
69 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
70 err (int exitcode, const char *fmt, ...)
71 {
72 va_list ap;
73 int savederrno;
74
75 savederrno = errno;
76 va_start (ap, fmt);
77 vfprintf (stderr, fmt, ap);
78 va_end (ap);
79 fprintf (stderr, ": %s\n", strerror (savederrno));
80 fflush (stderr);
81 _exit (exitcode);
82 }
83
84 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
85 errx (int exitcode, const char *fmt, ...)
86 {
87 va_list ap;
88
89 va_start (ap, fmt);
90 vfprintf (stderr, fmt, ap);
91 va_end (ap);
92 fputc ('\n', stderr);
93 fflush (stderr);
94 _exit (exitcode);
95 }
96
97 #ifndef GL_TEXTURE_RECTANGLE_ARB
98 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
99 #endif
100
101 #ifndef GL_BGRA
102 #define GL_BGRA 0x80E1
103 #endif
104
105 #ifndef GL_UNSIGNED_INT_8_8_8_8
106 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
107 #endif
108
109 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
110 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
111 #endif
112
113 #if 0
114 #define lprintf printf
115 #else
116 #define lprintf(...)
117 #endif
118
119 #define ARSERT(cond) for (;;) { \
120 if (!(cond)) { \
121 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
122 } \
123 break; \
124 }
125
126 struct slice {
127 int h;
128 int texindex;
129 };
130
131 struct tile {
132 int x, y, w, h;
133 int slicecount;
134 int sliceheight;
135 struct pbo *pbo;
136 fz_pixmap *pixmap;
137 struct slice slices[1];
138 };
139
140 struct pagedim {
141 int pageno;
142 int rotate;
143 int left;
144 int tctmready;
145 fz_irect bounds;
146 fz_rect pagebox;
147 fz_rect mediabox;
148 fz_matrix ctm, zoomctm, lctm, tctm;
149 };
150
151 struct slink {
152 fz_irect bbox;
153 fz_link *link;
154 };
155
156 enum { DPDF, DXPS, DCBZ };
157
158 struct page {
159 int tgen;
160 int sgen;
161 int type;
162 int pageno;
163 int pdimno;
164 fz_text_page *text;
165 fz_text_sheet *sheet;
166 union {
167 void *ptr;
168 pdf_page *pdfpage;
169 xps_page *xpspage;
170 cbz_page *cbzpage;
171 } u;
172 fz_display_list *dlist;
173 int slinkcount;
174 struct slink *slinks;
175 struct mark {
176 int i;
177 fz_text_span *span;
178 } fmark, lmark;
179 void (*freepage) (void *);
180 };
181
182 struct {
183 int type;
184 int sliceheight;
185 struct pagedim *pagedims;
186 int pagecount;
187 int pagedimcount;
188 union {
189 pdf_document *pdf;
190 xps_document *xps;
191 cbz_document *cbz;
192 } u;
193 fz_context *ctx;
194 int w, h;
195
196 int texindex;
197 int texcount;
198 GLuint *texids;
199
200 GLenum texiform;
201 GLenum texform;
202 GLenum texty;
203
204 fz_colorspace *colorspace;
205
206 struct {
207 int w, h;
208 struct slice *slice;
209 } *texowners;
210
211 int rotate;
212 enum { FitWidth, FitProportional, FitPage } fitmodel;
213 int trimmargins;
214 int needoutline;
215 int gen;
216 int aalevel;
217
218 int trimanew;
219 fz_irect trimfuzz;
220 fz_pixmap *pig;
221
222 pthread_t thread;
223 int cr, cw;
224 FT_Face face;
225
226 void (*closedoc) (void);
227 void (*freepage) (void *);
228
229 char *trimcachepath;
230
231 GLuint stid;
232
233 int pbo_usable;
234 void (*glBindBufferARB) (GLenum, GLuint);
235 GLboolean (*glUnmapBufferARB) (GLenum);
236 void *(*glMapBufferARB) (GLenum, GLenum);
237 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
238 void (*glGenBuffersARB) (GLsizei, GLuint *);
239 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
240 } state;
241
242 struct pbo {
243 GLuint id;
244 void *ptr;
245 size_t size;
246 };
247
248 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
249 {
250 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
251 }
252
253 static void UNUSED_ATTR debug_bbox (const char *cap, fz_irect r)
254 {
255 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
256 }
257
258 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
259 {
260 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
261 m.a, m.b, m.c, m.d, m.e, m.f);
262 }
263
264 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
265
266 static void lock (const char *cap)
267 {
268 int ret = pthread_mutex_lock (&mutex);
269 if (ret) {
270 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
271 }
272 }
273
274 static void unlock (const char *cap)
275 {
276 int ret = pthread_mutex_unlock (&mutex);
277 if (ret) {
278 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
279 }
280 }
281
282 static int trylock (const char *cap)
283 {
284 int ret = pthread_mutex_trylock (&mutex);
285 if (ret && ret != EBUSY) {
286 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
287 }
288 return ret == EBUSY;
289 }
290
291 static void *parse_pointer (const char *cap, const char *s)
292 {
293 int ret;
294 void *ptr;
295
296 ret = sscanf (s, "%" FMT_ptr, FMT_ptr_cast (&ptr));
297 if (ret != 1) {
298 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
299 }
300 return ptr;
301 }
302
303 static double now (void)
304 {
305 struct timeval tv;
306
307 if (gettimeofday (&tv, NULL)) {
308 err (1, "gettimeofday");
309 }
310 return tv.tv_sec + tv.tv_usec*1e-6;
311 }
312
313 static int hasdata (void)
314 {
315 int ret, avail;
316 ret = ioctl (state.cr, FIONREAD, &avail);
317 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
318 return avail > 0;
319 }
320
321 CAMLprim value ml_hasdata (value fd_v)
322 {
323 CAMLparam1 (fd_v);
324 int ret, avail;
325
326 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
327 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
328 CAMLreturn (Val_bool (avail > 0));
329 }
330
331 static void readdata (void *p, int size)
332 {
333 ssize_t n;
334
335 again:
336 n = read (state.cr, p, size);
337 if (n < 0) {
338 if (errno == EINTR) goto again;
339 err (1, "read (req %d, ret %zd)", size, n);
340 }
341 if (n - size) {
342 if (!n) errx (1, "EOF while reading");
343 errx (1, "read (req %d, ret %zd)", size, n);
344 }
345 }
346
347 static void writedata (char *p, int size)
348 {
349 char buf[4];
350 ssize_t n;
351
352 buf[0] = (size >> 24) & 0xff;
353 buf[1] = (size >> 16) & 0xff;
354 buf[2] = (size >> 8) & 0xff;
355 buf[3] = (size >> 0) & 0xff;
356
357 n = write (state.cw, buf, 4);
358 if (n != 4) {
359 if (!n) errx (1, "EOF while writing length");
360 err (1, "write %zd", n);
361 }
362
363 n = write (state.cw, p, size);
364 if (n - size) {
365 if (!n) errx (1, "EOF while writing data");
366 err (1, "write (req %d, ret %zd)", size, n);
367 }
368 }
369
370 static int readlen (void)
371 {
372 unsigned char p[4];
373
374 readdata (p, 4);
375 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
376 }
377
378 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
379 {
380 int size = 200, len;
381 va_list ap;
382 char *buf;
383
384 buf = malloc (size);
385 for (;;) {
386 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
387
388 va_start (ap, fmt);
389 len = vsnprintf (buf, size, fmt, ap);
390 va_end (ap);
391
392 if (len > -1 && len < size) {
393 writedata (buf, len);
394 break;
395 }
396
397 if (len > -1) {
398 size = len + 1;
399 }
400 else {
401 size *= 2;
402 }
403 buf = realloc (buf, size);
404 }
405 free (buf);
406 }
407
408 static void closepdf (void)
409 {
410 if (state.u.pdf) {
411 pdf_close_document (state.u.pdf);
412 state.u.pdf = NULL;
413 }
414 }
415
416 static void closexps (void)
417 {
418 if (state.u.xps) {
419 xps_close_document (state.u.xps);
420 state.u.xps = NULL;
421 }
422 }
423
424 static void closecbz (void)
425 {
426 if (state.u.cbz) {
427 cbz_close_document (state.u.cbz);
428 state.u.cbz = NULL;
429 }
430 }
431
432 static void freepdfpage (void *ptr)
433 {
434 pdf_free_page (state.u.pdf, ptr);
435 }
436
437 static void freeemptyxxxpage (void *ptr)
438 {
439 (void) ptr;
440 }
441
442 static void freexpspage (void *ptr)
443 {
444 xps_free_page (state.u.xps, ptr);
445 }
446
447 static void freecbzpage (void *ptr)
448 {
449 cbz_free_page (state.u.cbz, ptr);
450 }
451
452 static void openxref (char *filename, char *password)
453 {
454 int i, len;
455
456 for (i = 0; i < state.texcount; ++i) {
457 state.texowners[i].w = -1;
458 state.texowners[i].slice = NULL;
459 }
460
461 if (state.closedoc) state.closedoc ();
462
463 len = strlen (filename);
464
465 state.type = DPDF;
466 if (len > 4) {
467 char ext[4];
468
469 ext[0] = tolower ((int) filename[len-3]);
470 ext[1] = tolower ((int) filename[len-2]);
471 ext[2] = tolower ((int) filename[len-1]);
472
473 /**/ if (ext[0] == 'x' && ext[1] == 'p' && ext[2] == 's') {
474 state.type = DXPS;
475 }
476 else if (ext[0] == 'c' && ext[1] == 'b' && ext[2] == 'z') {
477 state.type = DCBZ;
478 }
479 }
480
481 if (state.pagedims) {
482 free (state.pagedims);
483 state.pagedims = NULL;
484 }
485 state.pagedimcount = 0;
486
487 fz_set_aa_level (state.ctx, state.aalevel);
488 switch (state.type) {
489 case DPDF:
490 state.u.pdf = pdf_open_document (state.ctx, filename);
491 if (pdf_needs_password (state.u.pdf)) {
492 int okay = pdf_authenticate_password (state.u.pdf, password);
493 if (!okay) {
494 errx (1, "invalid password");
495 }
496 }
497 state.pagecount = pdf_count_pages (state.u.pdf);
498 state.closedoc = closepdf;
499 state.freepage = freepdfpage;
500 break;
501
502 case DXPS:
503 state.u.xps = xps_open_document (state.ctx, filename);
504 state.pagecount = xps_count_pages (state.u.xps);
505 state.closedoc = closexps;
506 state.freepage = freexpspage;
507 break;
508
509 case DCBZ:
510 state.u.cbz = cbz_open_document (state.ctx, filename);
511 state.pagecount = cbz_count_pages (state.u.cbz);
512 state.closedoc = closecbz;
513 state.freepage = freecbzpage;
514 break;
515 }
516 }
517
518 static void pdfinfo (void)
519 {
520 if (state.type == DPDF) {
521 pdf_obj *infoobj;
522
523 printd ("info PDF version\t%d.%d",
524 state.u.pdf->version / 10, state.u.pdf->version % 10);
525
526 infoobj = pdf_dict_gets (state.u.pdf->trailer, "Info");
527 if (infoobj) {
528 int i;
529 char *s;
530 char *items[] = { "Title", "Author", "Creator",
531 "Producer", "CreationDate" };
532
533 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
534 pdf_obj *obj = pdf_dict_gets (infoobj, items[i]);
535 s = pdf_to_utf8 (state.u.pdf, obj);
536 if (*s) {
537 if (i == 0) {
538 printd ("title %s", s);
539 }
540 printd ("info %s\t%s", items[i], s);
541 }
542 fz_free (state.ctx, s);
543 }
544 }
545 printd ("infoend");
546 }
547 }
548
549 static void unlinktile (struct tile *tile)
550 {
551 int i;
552
553 for (i = 0; i < tile->slicecount; ++i) {
554 struct slice *s = &tile->slices[i];
555
556 if (s->texindex != -1) {
557 if (state.texowners[s->texindex].slice == s) {
558 state.texowners[s->texindex].slice = NULL;
559 }
560 }
561 }
562 }
563
564 static void freepage (struct page *page)
565 {
566 if (page->text) {
567 fz_free_text_page (state.ctx, page->text);
568 }
569 if (page->sheet) {
570 fz_free_text_sheet (state.ctx, page->sheet);
571 }
572 if (page->slinks) {
573 free (page->slinks);
574 }
575 page->freepage (page->u.ptr);
576 fz_free_display_list (state.ctx, page->dlist);
577 free (page);
578 }
579
580 static void freetile (struct tile *tile)
581 {
582 unlinktile (tile);
583 if (!tile->pbo) {
584 #ifndef PIGGYBACK
585 fz_drop_pixmap (state.ctx, tile->pixmap);
586 #else
587 if (state.pig) {
588 fz_drop_pixmap (state.ctx, state.pig);
589 }
590 state.pig = tile->pixmap;
591 #endif
592 }
593 else {
594 free (tile->pbo);
595 fz_drop_pixmap (state.ctx, tile->pixmap);
596 }
597 free (tile);
598 }
599
600 #ifdef __ALTIVEC__
601 #include <stdint.h>
602 #include <altivec.h>
603
604 static int cacheline32bytes;
605
606 static void __attribute__ ((constructor)) clcheck (void)
607 {
608 char **envp = environ;
609 unsigned long *auxv;
610
611 while (*envp++);
612
613 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
614 if (*auxv == 19) {
615 cacheline32bytes = auxv[1] == 32;
616 return;
617 }
618 }
619 }
620
621 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
622 {
623 size_t size = pixmap->w * pixmap->h * pixmap->n;
624 if (cacheline32bytes && size > 32) {
625 intptr_t a1, a2, diff;
626 size_t sizea, i;
627 vector unsigned char v = vec_splat_u8 (-1);
628 vector unsigned char *p;
629
630 a1 = a2 = (intptr_t) pixmap->samples;
631 a2 = (a1 + 31) & ~31;
632 diff = a2 - a1;
633 sizea = size - diff;
634 p = (void *) a2;
635
636 while (a1 != a2) *(char *) a1++ = 0xff;
637 for (i = 0; i < (sizea & ~31); i += 32) {
638 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
639 vec_st (v, i, p);
640 vec_st (v, i + 16, p);
641 }
642 while (i < sizea) *((char *) a1 + i++) = 0xff;
643 }
644 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
645 }
646 #else
647 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
648 #endif
649
650 static void trimctm (pdf_page *page, int pindex)
651 {
652 fz_matrix ctm;
653 struct pagedim *pdim = &state.pagedims[pindex];
654
655 if (!pdim->tctmready) {
656 if (state.trimmargins) {
657 fz_rect realbox;
658 fz_matrix rm, sm, tm, im, ctm1;
659
660 fz_rotate (&rm, -pdim->rotate);
661 fz_scale (&sm, 1, -1);
662 fz_concat (&ctm, &rm, &sm);
663 realbox = pdim->mediabox;
664 fz_transform_rect (&realbox, &ctm);
665 fz_translate (&tm, -realbox.x0, -realbox.y0);
666 fz_concat (&ctm1, &ctm, &tm);
667 fz_invert_matrix (&im, &page->ctm);
668 fz_concat (&ctm, &im, &ctm1);
669 }
670 else {
671 ctm = fz_identity;
672 }
673 pdim->tctm = ctm;
674 pdim->tctmready = 1;
675 }
676 }
677
678 static fz_matrix pagectm (struct page *page)
679 {
680 fz_matrix ctm, tm;
681
682 if (page->type == DPDF) {
683 trimctm (page->u.pdfpage, page->pdimno);
684 fz_concat (&ctm,
685 &state.pagedims[page->pdimno].tctm,
686 &state.pagedims[page->pdimno].ctm);
687 }
688 else {
689 struct pagedim *pdim = &state.pagedims[page->pdimno];
690
691 fz_translate (&tm, -pdim->mediabox.x0, -pdim->mediabox.y0);
692 fz_concat (&ctm, &tm, &state.pagedims[page->pdimno].ctm);
693 }
694 return ctm;
695 }
696
697 static void *loadpage (int pageno, int pindex)
698 {
699 fz_device *dev;
700 struct page *page = NULL;
701
702 page = calloc (sizeof (struct page), 1);
703 if (!page) {
704 err (1, "calloc page %d", pageno);
705 }
706
707 page->dlist = fz_new_display_list (state.ctx);
708 dev = fz_new_list_device (state.ctx, page->dlist);
709 fz_try (state.ctx) {
710 switch (state.type) {
711 case DPDF:
712 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
713 pdf_run_page (state.u.pdf, page->u.pdfpage, dev,
714 &fz_identity, NULL);
715 page->freepage = freepdfpage;
716 break;
717
718 case DXPS:
719 page->u.xpspage = xps_load_page (state.u.xps, pageno);
720 xps_run_page (state.u.xps, page->u.xpspage, dev,
721 &fz_identity, NULL);
722 page->freepage = freexpspage;
723 break;
724
725 case DCBZ:
726 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
727 cbz_run_page (state.u.cbz, page->u.cbzpage, dev,
728 &fz_identity, NULL);
729 page->freepage = freecbzpage;
730 break;
731 }
732 }
733 fz_catch (state.ctx) {
734 page->u.ptr = NULL;
735 page->freepage = freeemptyxxxpage;
736 }
737 fz_free_device (dev);
738
739 page->pdimno = pindex;
740 page->pageno = pageno;
741 page->sgen = state.gen;
742 page->tgen = state.gen;
743 page->type = state.type;
744
745 return page;
746 }
747
748 static struct tile *alloctile (int h)
749 {
750 int i;
751 int slicecount;
752 size_t tilesize;
753 struct tile *tile;
754
755 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
756 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
757 tile = calloc (tilesize, 1);
758 if (!tile) {
759 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
760 }
761 for (i = 0; i < slicecount; ++i) {
762 int sh = MIN (h, state.sliceheight);
763 tile->slices[i].h = sh;
764 tile->slices[i].texindex = -1;
765 h -= sh;
766 }
767 tile->slicecount = slicecount;
768 tile->sliceheight = state.sliceheight;
769 return tile;
770 }
771
772 #ifdef OBSCURED_OPT
773 struct obs {
774 int cured;
775 fz_irect b;
776 };
777
778 static void obs_fill_image (fz_device *dev, fz_image *image,
779 const fz_matrix *ctm, float alpha)
780 {
781 struct obs *obs = dev->user;
782
783 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
784 fz_irect b;
785 fz_rect rect = fz_unit_rect;
786
787 fz_transform_rect (&rect, ctm);
788 fz_round_rect (&b, &rect);
789 fz_intersect_irect (&b, &obs->b);
790 obs->cured = b.x0 == obs->b.x0
791 && b.x1 == obs->b.x1
792 && b.y0 == obs->b.y0
793 && b.y1 == obs->b.y1;
794 }
795 }
796
797 static int obscured (struct page *page, fz_irect bbox)
798 {
799 fz_rect rect;
800 fz_matrix ctm;
801 fz_device dev;
802 struct obs obs;
803
804 memset (&dev, 0, sizeof (dev));
805 memset (&obs, 0, sizeof (obs));
806 dev.hints = 0;
807 dev.flags = 0;
808 dev.user = &obs;
809 dev.ctx = state.ctx;
810 dev.fill_image = obs_fill_image;
811 obs.b = bbox;
812 fz_rect_from_irect (&rect, &bbox);
813 ctm = pagectm (page);
814 fz_run_display_list (page->dlist, &dev, &ctm, &rect, NULL);
815 return obs.cured;
816 }
817 #define OBSCURED obscured
818 #else
819 #define OBSCURED(a, b) 0
820 #endif
821
822 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
823 struct pbo *pbo)
824 {
825 fz_rect rect;
826 fz_irect bbox;
827 fz_matrix ctm;
828 fz_device *dev;
829 struct tile *tile;
830 struct pagedim *pdim;
831
832 tile = alloctile (h);
833 pdim = &state.pagedims[page->pdimno];
834
835 bbox = pdim->bounds;
836 bbox.x0 += x;
837 bbox.y0 += y;
838 bbox.x1 = bbox.x0 + w;
839 bbox.y1 = bbox.y0 + h;
840
841 if (state.pig) {
842 if (state.pig->w == w
843 && state.pig->h == h
844 && state.pig->colorspace == state.colorspace) {
845 tile->pixmap = state.pig;
846 tile->pixmap->x = bbox.x0;
847 tile->pixmap->y = bbox.y0;
848 }
849 else {
850 fz_drop_pixmap (state.ctx, state.pig);
851 }
852 state.pig = NULL;
853 }
854 if (!tile->pixmap) {
855 if (pbo) {
856 tile->pixmap =
857 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
858 &bbox, pbo->ptr);
859 tile->pbo = pbo;
860 }
861 else {
862 tile->pixmap =
863 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, &bbox);
864 }
865 }
866
867 tile->w = w;
868 tile->h = h;
869 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
870 clearpixmap (tile->pixmap);
871 }
872 dev = fz_new_draw_device (state.ctx, tile->pixmap);
873 ctm = pagectm (page);
874 fz_rect_from_irect (&rect, &bbox);
875 fz_run_display_list (page->dlist, dev, &ctm, &rect, NULL);
876 fz_free_device (dev);
877
878 return tile;
879 }
880
881 static void initpdims (void)
882 {
883 double start, end;
884 int pageno, trim, show;
885 FILE *trimf = NULL;
886 int trimw = 0;
887
888 start = now ();
889
890 if (state.trimmargins && state.trimcachepath) {
891 trimf = fopen (state.trimcachepath, "rb");
892 if (!trimf) {
893 trimf = fopen (state.trimcachepath, "wb");
894 trimw = 1;
895 }
896 }
897 for (pageno = 0; pageno < state.pagecount; ++pageno) {
898 int rotate = 0;
899 struct pagedim *p;
900 fz_rect mediabox;
901
902 switch (state.type) {
903 case DPDF: {
904 pdf_obj *pageobj = state.u.pdf->page_objs[pageno];
905
906 if (state.trimmargins) {
907 pdf_obj *obj;
908 pdf_page *page;
909
910 fz_try (state.ctx) {
911 page = pdf_load_page (state.u.pdf, pageno);
912 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
913 trim = state.trimanew || !obj;
914 if (trim) {
915 fz_rect rect;
916 fz_matrix ctm;
917 fz_device *dev;
918
919 dev = fz_new_bbox_device (state.ctx, &rect);
920 dev->hints |= FZ_IGNORE_SHADE;
921 fz_invert_matrix (&ctm, &page->ctm);
922 pdf_run_page (state.u.pdf, page, dev,
923 &fz_identity, NULL);
924 fz_free_device (dev);
925
926 rect.x0 += state.trimfuzz.x0;
927 rect.x1 += state.trimfuzz.x1;
928 rect.y0 += state.trimfuzz.y0;
929 rect.y1 += state.trimfuzz.y1;
930 fz_transform_rect (&rect, &ctm);
931 fz_intersect_rect (&rect, &page->mediabox);
932
933 if (fz_is_empty_rect (&rect)) {
934 mediabox = page->mediabox;
935 }
936 else {
937 mediabox = rect;
938 }
939
940 obj = pdf_new_array (state.ctx, 4);
941 pdf_array_push (obj,
942 pdf_new_real (state.ctx, mediabox.x0));
943 pdf_array_push (obj,
944 pdf_new_real (state.ctx, mediabox.y0));
945 pdf_array_push (obj,
946 pdf_new_real (state.ctx, mediabox.x1));
947 pdf_array_push (obj,
948 pdf_new_real (state.ctx, mediabox.y1));
949 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
950 }
951 else {
952 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
953 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
954 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
955 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
956 }
957
958 rotate = page->rotate;
959 pdf_free_page (state.u.pdf, page);
960
961 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
962 if (show) {
963 printd ("progress %f Trimming %d",
964 (double) (pageno + 1) / state.pagecount,
965 pageno + 1);
966 }
967 }
968 fz_catch (state.ctx) {
969 fprintf (stderr, "failed to load page %d\n", pageno+1);
970 }
971 }
972 else {
973 fz_rect cropbox;
974
975 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "MediaBox"),
976 &mediabox);
977 if (fz_is_empty_rect (&mediabox)) {
978 fprintf (stderr, "cannot find page size for page %d\n",
979 pageno+1);
980 mediabox.x0 = 0;
981 mediabox.y0 = 0;
982 mediabox.x1 = 612;
983 mediabox.y1 = 792;
984 }
985
986 pdf_to_rect (state.ctx, pdf_dict_gets (pageobj, "CropBox"),
987 &cropbox);
988 if (!fz_is_empty_rect (&cropbox)) {
989 fz_intersect_rect (&mediabox, &cropbox);
990 }
991 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
992 }
993 break;
994 }
995
996 case DXPS:
997 {
998 xps_page *page;
999
1000 fz_try (state.ctx) {
1001 page = xps_load_page (state.u.xps, pageno);
1002 xps_bound_page (state.u.xps, page, &mediabox);
1003 rotate = 0;
1004 if (state.trimmargins) {
1005 fz_rect rect;
1006 fz_device *dev;
1007
1008 dev = fz_new_bbox_device (state.ctx, &rect);
1009 dev->hints |= FZ_IGNORE_SHADE;
1010 xps_run_page (state.u.xps, page, dev,
1011 &fz_identity, NULL);
1012 fz_free_device (dev);
1013
1014 rect.x0 += state.trimfuzz.x0;
1015 rect.x1 += state.trimfuzz.x1;
1016 rect.y0 += state.trimfuzz.y0;
1017 rect.y1 += state.trimfuzz.y1;
1018 fz_intersect_rect (&rect, &mediabox);
1019
1020 if (!fz_is_empty_rect (&rect)) {
1021 mediabox = rect;
1022 }
1023 }
1024 xps_free_page (state.u.xps, page);
1025 printd ("progress %f loading %d",
1026 (double) (pageno + 1) / state.pagecount,
1027 pageno + 1);
1028 }
1029 fz_catch (state.ctx) {
1030 }
1031 }
1032 break;
1033
1034 case DCBZ:
1035 {
1036 rotate = 0;
1037 if (state.trimmargins && trimw) {
1038 cbz_page *page;
1039
1040 fz_try (state.ctx) {
1041 page = cbz_load_page (state.u.cbz, pageno);
1042 cbz_bound_page (state.u.cbz, page, &mediabox);
1043 cbz_free_page (state.u.cbz, page);
1044 printd ("progress %f Trimming %d",
1045 (double) (pageno + 1) / state.pagecount,
1046 pageno + 1);
1047 }
1048 fz_catch (state.ctx) {
1049 fprintf (stderr, "failed to load page %d\n", pageno+1);
1050 mediabox.x0 = 0;
1051 mediabox.y0 = 0;
1052 mediabox.x1 = 900;
1053 mediabox.y1 = 900;
1054 }
1055 if (trimf) {
1056 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1057 if (n - 1) {
1058 err (1, "fwrite trim mediabox");
1059 }
1060 }
1061 }
1062 else {
1063 if (trimf) {
1064 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1065 if (n - 1) {
1066 err (1, "fread trim mediabox");
1067 }
1068 }
1069 else {
1070 mediabox.x0 = mediabox.y0 = 0;
1071 mediabox.x1 = 900;
1072 mediabox.y1 = 900;
1073 }
1074 }
1075 }
1076 break;
1077
1078 default:
1079 ARSERT (0 && state.type);
1080 }
1081
1082 if (state.pagedimcount == 0
1083 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1084 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1085 size_t size;
1086
1087 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1088 state.pagedims = realloc (state.pagedims, size);
1089 if (!state.pagedims) {
1090 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1091 size, state.pagedimcount + 1);
1092 }
1093
1094 p = &state.pagedims[state.pagedimcount++];
1095 p->rotate = rotate;
1096 p->mediabox = mediabox;
1097 p->pageno = pageno;
1098 }
1099 }
1100 end = now ();
1101 if (state.trimmargins) {
1102 printd ("progress 1 Trimmed %d pages in %f seconds",
1103 state.pagecount, end - start);
1104 }
1105 else {
1106 printd ("vmsg Processed %d pages in %f seconds",
1107 state.pagecount, end - start);
1108 }
1109 state.trimanew = 0;
1110 if (trimf) {
1111 if (fclose (trimf)) {
1112 err (1, "fclose");
1113 }
1114 }
1115 }
1116
1117 static void layout (void)
1118 {
1119 int pindex;
1120 fz_rect box;
1121 fz_matrix ctm, rm;
1122 struct pagedim *p = p;
1123 double zw, w, maxw = 0.0, zoom = zoom;
1124
1125 if (state.pagedimcount == 0) return;
1126
1127 switch (state.fitmodel) {
1128 case FitProportional:
1129 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1130 double x0, x1;
1131
1132 p = &state.pagedims[pindex];
1133 fz_rotate (&rm, p->rotate + state.rotate);
1134 box = p->mediabox;
1135 fz_transform_rect (&box, &rm);
1136
1137 x0 = MIN (box.x0, box.x1);
1138 x1 = MAX (box.x0, box.x1);
1139
1140 w = x1 - x0;
1141 maxw = MAX (w, maxw);
1142 zoom = state.w / maxw;
1143 }
1144 break;
1145
1146 case FitPage:
1147 maxw = state.w;
1148 break;
1149
1150 case FitWidth:
1151 break;
1152
1153 default:
1154 ARSERT (0 && state.fitmodel);
1155 }
1156
1157 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1158 fz_rect rect;
1159 fz_matrix tm, sm;
1160
1161 p = &state.pagedims[pindex];
1162 fz_rotate (&ctm, state.rotate);
1163 fz_rotate (&rm, p->rotate + state.rotate);
1164 box = p->mediabox;
1165 fz_transform_rect (&box, &rm);
1166 w = box.x1 - box.x0;
1167 switch (state.fitmodel) {
1168 case FitProportional:
1169 p->left = ((maxw - w) * zoom) / 2.0;
1170 break;
1171 case FitPage:
1172 {
1173 double zh, h;
1174 zw = maxw / w;
1175 h = box.y1 - box.y0;
1176 zh = state.h / h;
1177 zoom = MIN (zw, zh);
1178 p->left = (maxw - (w * zoom)) / 2.0;
1179 }
1180 break;
1181 case FitWidth:
1182 p->left = 0;
1183 zoom = state.w / w;
1184 break;
1185 }
1186
1187 fz_scale (&p->zoomctm, zoom, zoom);
1188 fz_concat (&ctm, &p->zoomctm, &ctm);
1189
1190 fz_rotate (&rm, p->rotate);
1191 p->pagebox = p->mediabox;
1192 fz_transform_rect (&p->pagebox, &rm);
1193 p->pagebox.x1 -= p->pagebox.x0;
1194 p->pagebox.y1 -= p->pagebox.y0;
1195 p->pagebox.x0 = 0;
1196 p->pagebox.y0 = 0;
1197 rect = p->pagebox;
1198 fz_transform_rect (&rect, &ctm);
1199 fz_round_rect (&p->bounds, &rect);
1200 p->ctm = ctm;
1201
1202 fz_translate (&tm, 0, -p->mediabox.y1);
1203 fz_scale (&sm, zoom, -zoom);
1204 fz_concat (&ctm, &tm, &sm);
1205 fz_concat (&p->lctm, &ctm, &rm);
1206
1207 p->tctmready = 0;
1208 }
1209
1210 do {
1211 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1212 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1213 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1214 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1215 int w = x1 - x0;
1216 int h = y1 - y0;
1217
1218 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1219 } while (p-- != state.pagedims);
1220 }
1221
1222 static
1223 struct anchor { int n; int x; int y; int w; int h; }
1224 desttoanchor (fz_link_dest *dest)
1225 {
1226 int i;
1227 struct anchor a;
1228 struct pagedim *pdim = state.pagedims;
1229
1230 a.n = -1;
1231 a.x = 0;
1232 a.y = 0;
1233 for (i = 0; i < state.pagedimcount; ++i) {
1234 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1235 break;
1236 pdim = &state.pagedims[i];
1237 }
1238 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1239 fz_point p;
1240 if (dest->ld.gotor.flags & fz_link_flag_l_valid)
1241 p.x = dest->ld.gotor.lt.x;
1242 else
1243 p.x = 0.0;
1244 p.y = dest->ld.gotor.lt.y;
1245 fz_transform_point (&p, &pdim->lctm);
1246 a.y = p.y;
1247 a.x = p.x;
1248 }
1249 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1250 double x0, x1, y0, y1;
1251
1252 x0 = MIN (pdim->bounds.x0, pdim->bounds.x1);
1253 x1 = MAX (pdim->bounds.x0, pdim->bounds.x1);
1254 a.w = x1 - x0;
1255 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1256 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1257 a.h = y1 - y0;
1258 a.n = dest->ld.gotor.page;
1259 }
1260 return a;
1261 }
1262
1263 static void recurse_outline (fz_outline *outline, int level)
1264 {
1265 while (outline) {
1266 if (outline->dest.kind == FZ_LINK_GOTO) {
1267 struct anchor a = desttoanchor (&outline->dest);
1268
1269 if (a.n >= 0) {
1270 printd ("o %d %d %d %d %s",
1271 level, a.n, a.y, a.h, outline->title);
1272 }
1273 }
1274 else {
1275 printd ("emsg Unhandled outline kind %d for %s\n",
1276 outline->dest.kind, outline->title);
1277 }
1278 if (outline->down) {
1279 recurse_outline (outline->down, level + 1);
1280 }
1281 outline = outline->next;
1282 }
1283 }
1284
1285 static void process_outline (void)
1286 {
1287 fz_outline *outline;
1288
1289 if (!state.needoutline) return;
1290
1291 state.needoutline = 0;
1292 switch (state.type) {
1293 case DPDF:
1294 outline = pdf_load_outline (state.u.pdf);
1295 break;
1296 case DXPS:
1297 outline = xps_load_outline (state.u.xps);
1298 break;
1299 default:
1300 outline = NULL;
1301 break;
1302 }
1303 if (outline) {
1304 recurse_outline (outline, 0);
1305 fz_free_outline (state.ctx, outline);
1306 }
1307 }
1308
1309 static char *strofspan (fz_text_span *span)
1310 {
1311 char *p;
1312 char utf8[10];
1313 fz_text_char *ch;
1314 size_t size = 0, cap = 80;
1315
1316 p = malloc (cap + 1);
1317 if (!p) return NULL;
1318
1319 for (ch = span->text; ch < span->text + span->len; ++ch) {
1320 int n = fz_runetochar (utf8, ch->c);
1321 if (size + n > cap) {
1322 cap *= 2;
1323 p = realloc (p, cap + 1);
1324 if (!p) return NULL;
1325 }
1326
1327 memcpy (p + size, utf8, n);
1328 size += n;
1329 }
1330 p[size] = 0;
1331 return p;
1332 }
1333
1334 static int matchspan (regex_t *re, fz_text_page *page,
1335 fz_text_span *span, fz_matrix ctm,
1336 int stop, int pageno, double start)
1337 {
1338 int ret;
1339 char *p;
1340 regmatch_t rm;
1341 int a, b, c;
1342 fz_rect sb, eb;
1343 fz_point p1, p2, p3, p4;
1344
1345 p = strofspan (span);
1346 if (!p) return -1;
1347
1348 ret = regexec (re, p, 1, &rm, 0);
1349 if (ret) {
1350 free (p);
1351 if (ret != REG_NOMATCH) {
1352 size_t size;
1353 char errbuf[80];
1354 size = regerror (ret, re, errbuf, sizeof (errbuf));
1355 printd ("msg regexec error `%.*s'",
1356 (int) size, errbuf);
1357 return -1;
1358 }
1359 return 0;
1360 }
1361 else {
1362 int l = span->len;
1363
1364 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1365 c += fz_runelen (span->text[a].c);
1366 }
1367 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1368 c += fz_runelen (span->text[b].c);
1369 }
1370
1371 if (fz_runelen (span->text[b].c) > 1) {
1372 b = MAX (0, b-1);
1373 }
1374
1375 fz_text_char_bbox (&sb, span, a);
1376 fz_text_char_bbox (&eb, span, b);
1377
1378 p1.x = sb.x0;
1379 p1.y = sb.y0;
1380 p2.x = eb.x1;
1381 p2.y = sb.y0;
1382 p3.x = eb.x1;
1383 p3.y = eb.y1;
1384 p4.x = sb.x0;
1385 p4.y = eb.y1;
1386
1387 if (!stop) {
1388 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1389 pageno, 1,
1390 p1.x, p1.y,
1391 p2.x, p2.y,
1392 p3.x, p3.y,
1393 p4.x, p4.y);
1394
1395 printd ("progress 1 found at %d `%.*s' in %f sec",
1396 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1397 now () - start);
1398 }
1399 else {
1400 printd ("match %d %d %f %f %f %f %f %f %f %f",
1401 pageno, 2,
1402 p1.x, p1.y,
1403 p2.x, p2.y,
1404 p3.x, p3.y,
1405 p4.x, p4.y);
1406 }
1407 free (p);
1408 return 1;
1409 }
1410 }
1411
1412 static int compareblocks (const void *l, const void *r)
1413 {
1414 fz_text_block const *ls = l;
1415 fz_text_block const* rs = r;
1416 return ls->bbox.y0 - rs->bbox.y0;
1417 }
1418
1419 /* wishful thinking function */
1420 static void search (regex_t *re, int pageno, int y, int forward)
1421 {
1422 int i, j;
1423 fz_matrix ctm;
1424 fz_device *tdev;
1425 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1426 fz_text_page *text;
1427 fz_text_sheet *sheet;
1428 struct pagedim *pdim, *pdimprev;
1429 int stop = 0, niters = 0;
1430 double start, end;
1431
1432 if (!(state.type == DPDF || state.type == DXPS))
1433 return;
1434
1435 start = now ();
1436 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1437 if (niters++ == 5) {
1438 niters = 0;
1439 if (hasdata ()) {
1440 printd ("progress 1 attention requested aborting search at %d",
1441 pageno);
1442 stop = 1;
1443 }
1444 else {
1445 printd ("progress %f searching in page %d",
1446 (double) (pageno + 1) / state.pagecount,
1447 pageno);
1448 }
1449 }
1450 pdimprev = NULL;
1451 for (i = 0; i < state.pagedimcount; ++i) {
1452 pdim = &state.pagedims[i];
1453 if (pdim->pageno == pageno) {
1454 goto found;
1455 }
1456 if (pdim->pageno > pageno) {
1457 pdim = pdimprev;
1458 goto found;
1459 }
1460 pdimprev = pdim;
1461 }
1462 pdim = pdimprev;
1463 found:
1464
1465 sheet = fz_new_text_sheet (state.ctx);
1466 text = fz_new_text_page (state.ctx, &fz_infinite_rect);
1467 tdev = fz_new_text_device (state.ctx, sheet, text);
1468
1469 switch (state.type) {
1470 case DPDF:
1471 u.ptr = NULL;
1472 fz_try (state.ctx) {
1473 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1474 trimctm (u.pdfpage, pdim - state.pagedims);
1475 fz_concat (&ctm, &pdim->tctm, &pdim->zoomctm);
1476 pdf_run_page (state.u.pdf, u.pdfpage, tdev, &ctm, NULL);
1477 }
1478 fz_catch (state.ctx) {
1479 fz_free_device (tdev);
1480 u.ptr = NULL;
1481 goto nextiter;
1482 }
1483 break;
1484
1485 case DXPS:
1486 u.xpspage = xps_load_page (state.u.xps, pageno);
1487 xps_run_page (state.u.xps, u.xpspage, tdev, &pdim->ctm, NULL);
1488 break;
1489
1490 default:
1491 ARSERT (0 && state.type);
1492 }
1493
1494 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1495 fz_free_device (tdev);
1496
1497 for (j = 0; j < text->len; ++j) {
1498 int k;
1499 fz_page_block *pb;
1500 fz_text_block *block;
1501
1502 pb = &text->blocks[forward ? j : text->len - 1 - j];
1503 if (pb->type != FZ_PAGE_BLOCK_TEXT) continue;
1504 block = pb->u.text;
1505
1506 for (k = 0; k < block->len; ++k) {
1507 fz_text_line *line;
1508 fz_text_span *span;
1509
1510 if (forward) {
1511 line = &block->lines[k];
1512 if (line->bbox.y0 < y + 1) continue;
1513 }
1514 else {
1515 line = &block->lines[block->len - 1 - k];
1516 if (line->bbox.y0 > y - 1) continue;
1517 }
1518
1519 for (span = line->first_span; span; span = span->next) {
1520 switch (matchspan (re, text, span, ctm,
1521 stop, pageno, start)) {
1522 case 0: break;
1523 case 1: stop = 1; break;
1524 case -1: stop = 1; goto endloop;
1525 }
1526 }
1527 }
1528 }
1529 nextiter:
1530 if (forward) {
1531 pageno += 1;
1532 y = 0;
1533 }
1534 else {
1535 pageno -= 1;
1536 y = INT_MAX;
1537 }
1538 endloop:
1539 fz_free_text_page (state.ctx, text);
1540 fz_free_text_sheet (state.ctx, sheet);
1541 if (u.ptr) {
1542 state.freepage (u.ptr);
1543 }
1544 }
1545 end = now ();
1546 if (!stop) {
1547 printd ("progress 1 no matches %f sec", end - start);
1548 }
1549 printd ("clearrects");
1550 }
1551
1552 static void set_tex_params (int colorspace)
1553 {
1554 union {
1555 unsigned char b;
1556 unsigned int s;
1557 } endianness = {1};
1558
1559 switch (colorspace) {
1560 case 0:
1561 state.texiform = GL_RGBA8;
1562 state.texform = GL_RGBA;
1563 state.texty = GL_UNSIGNED_BYTE;
1564 state.colorspace = fz_device_rgb (state.ctx);
1565 break;
1566 case 1:
1567 state.texiform = GL_RGBA8;
1568 state.texform = GL_BGRA;
1569 state.texty = endianness.s > 1
1570 ? GL_UNSIGNED_INT_8_8_8_8
1571 : GL_UNSIGNED_INT_8_8_8_8_REV;
1572 state.colorspace = fz_device_bgr (state.ctx);
1573 break;
1574 case 2:
1575 state.texiform = GL_LUMINANCE_ALPHA;
1576 state.texform = GL_LUMINANCE_ALPHA;
1577 state.texty = GL_UNSIGNED_BYTE;
1578 state.colorspace = fz_device_gray (state.ctx);
1579 break;
1580 default:
1581 errx (1, "invalid colorspce %d", colorspace);
1582 }
1583 }
1584
1585 static void realloctexts (int texcount)
1586 {
1587 size_t size;
1588
1589 if (texcount == state.texcount) return;
1590
1591 if (texcount < state.texcount) {
1592 glDeleteTextures (state.texcount - texcount,
1593 state.texids + texcount);
1594 }
1595
1596 size = texcount * sizeof (*state.texids);
1597 state.texids = realloc (state.texids, size);
1598 if (!state.texids) {
1599 err (1, "realloc texids %" FMT_s, size);
1600 }
1601
1602 size = texcount * sizeof (*state.texowners);
1603 state.texowners = realloc (state.texowners, size);
1604 if (!state.texowners) {
1605 err (1, "realloc texowners %" FMT_s, size);
1606 }
1607 if (texcount > state.texcount) {
1608 int i;
1609
1610 glGenTextures (texcount - state.texcount,
1611 state.texids + state.texcount);
1612 for (i = state.texcount; i < texcount; ++i) {
1613 state.texowners[i].w = -1;
1614 state.texowners[i].slice = NULL;
1615 }
1616 }
1617 state.texcount = texcount;
1618 state.texindex = 0;
1619 }
1620
1621 static char *mbtoutf8 (char *s)
1622 {
1623 char *p, *r;
1624 wchar_t *tmp;
1625 size_t i, ret, len;
1626
1627 len = mbstowcs (NULL, s, strlen (s));
1628 if (len == 0) {
1629 return s;
1630 }
1631 else {
1632 if (len == (size_t) -1) {
1633 return s;
1634 }
1635 }
1636
1637 tmp = malloc (len * sizeof (wchar_t));
1638 if (!tmp) {
1639 return s;
1640 }
1641
1642 ret = mbstowcs (tmp, s, len);
1643 if (ret == (size_t) -1) {
1644 free (tmp);
1645 return s;
1646 }
1647
1648 len = 0;
1649 for (i = 0; i < ret; ++i) {
1650 len += fz_runelen (tmp[i]);
1651 }
1652
1653 p = r = malloc (len + 1);
1654 if (!r) {
1655 free (tmp);
1656 return s;
1657 }
1658
1659 for (i = 0; i < ret; ++i) {
1660 p += fz_runetochar (p, tmp[i]);
1661 }
1662 *p = 0;
1663 free (tmp);
1664 return r;
1665 }
1666
1667 CAMLprim value ml_mbtoutf8 (value s_v)
1668 {
1669 CAMLparam1 (s_v);
1670 CAMLlocal1 (ret_v);
1671 char *s, *r;
1672
1673 s = String_val (s_v);
1674 r = mbtoutf8 (s);
1675 if (r == s) {
1676 ret_v = s_v;
1677 }
1678 else {
1679 ret_v = caml_copy_string (r);
1680 free (r);
1681 }
1682 CAMLreturn (ret_v);
1683 }
1684
1685 static void * mainloop (void *unused)
1686 {
1687 char *p = NULL;
1688 int len, ret, oldlen = 0;
1689
1690 for (;;) {
1691 len = readlen ();
1692 if (len == 0) {
1693 errx (1, "readlen returned 0");
1694 }
1695
1696 if (oldlen < len + 1) {
1697 p = realloc (p, len + 1);
1698 if (!p) {
1699 err (1, "realloc %d failed", len + 1);
1700 }
1701 oldlen = len + 1;
1702 }
1703 readdata (p, len);
1704 p[len] = 0;
1705
1706 if (!strncmp ("open", p, 4)) {
1707 size_t filenamelen;
1708 int wthack, off;
1709 char *password;
1710 char *filename;
1711 char *utf8filename;
1712
1713 ret = sscanf (p + 5, " %d %n", &wthack, &off);
1714 if (ret != 1) {
1715 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1716 }
1717
1718 filename = p + 5 + off;
1719 filenamelen = strlen (filename);
1720 password = filename + filenamelen + 1;
1721
1722 lock ("open");
1723 openxref (filename, password);
1724 pdfinfo ();
1725 initpdims ();
1726 unlock ("open");
1727
1728 if (!wthack) {
1729 utf8filename = mbtoutf8 (filename);
1730 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1731 if (utf8filename != filename) {
1732 free (utf8filename);
1733 }
1734 }
1735 state.needoutline = 1;
1736 }
1737 else if (!strncmp ("cs", p, 2)) {
1738 int i, colorspace;
1739
1740 ret = sscanf (p + 2, " %d", &colorspace);
1741 if (ret != 1) {
1742 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1743 }
1744 lock ("cs");
1745 set_tex_params (colorspace);
1746 for (i = 0; i < state.texcount; ++i) {
1747 state.texowners[i].w = -1;
1748 state.texowners[i].slice = NULL;
1749 }
1750 unlock ("cs");
1751 }
1752 else if (!strncmp ("freepage", p, 8)) {
1753 void *ptr;
1754
1755 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1756 if (ret != 1) {
1757 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1758 }
1759 freepage (ptr);
1760 }
1761 else if (!strncmp ("freetile", p, 8)) {
1762 void *ptr;
1763
1764 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1765 if (ret != 1) {
1766 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1767 }
1768 freetile (ptr);
1769 }
1770 else if (!strncmp ("search", p, 6)) {
1771 int icase, pageno, y, ret, len2, forward;
1772 char *pattern;
1773 regex_t re;
1774
1775 ret = sscanf (p + 6, " %d %d %d %d,%n",
1776 &icase, &pageno, &y, &forward, &len2);
1777 if (ret != 4) {
1778 errx (1, "malformed search `%s' ret=%d", p, ret);
1779 }
1780
1781 pattern = p + 6 + len2;
1782 ret = regcomp (&re, pattern,
1783 REG_EXTENDED | (icase ? REG_ICASE : 0));
1784 if (ret) {
1785 char errbuf[80];
1786 size_t size;
1787
1788 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1789 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1790 }
1791 else {
1792 search (&re, pageno, y, forward);
1793 regfree (&re);
1794 }
1795 }
1796 else if (!strncmp ("geometry", p, 8)) {
1797 int w, h, fitmodel;
1798
1799 printd ("clear");
1800 ret = sscanf (p + 8, " %d %d %d", &w, &h, &fitmodel);
1801 if (ret != 3) {
1802 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1803 }
1804
1805 lock ("geometry");
1806 state.h = h;
1807 if (w != state.w) {
1808 int i;
1809 state.w = w;
1810 for (i = 0; i < state.texcount; ++i) {
1811 state.texowners[i].slice = NULL;
1812 }
1813 }
1814 state.fitmodel = fitmodel;
1815 layout ();
1816 process_outline ();
1817
1818 state.gen++;
1819 unlock ("geometry");
1820 printd ("continue %d", state.pagecount);
1821 }
1822 else if (!strncmp ("reqlayout", p, 9)) {
1823 char *nameddest;
1824 int rotate, fitmodel, off, h;
1825
1826 printd ("clear");
1827 ret = sscanf (p + 9, " %d %d %d %n",
1828 &rotate, &fitmodel, &h, &off);
1829 if (ret != 3) {
1830 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1831 }
1832 lock ("reqlayout");
1833 if (state.rotate != rotate || state.fitmodel != fitmodel) {
1834 state.gen += 1;
1835 }
1836 state.rotate = rotate;
1837 state.fitmodel = fitmodel;
1838 state.h = h;
1839 layout ();
1840 process_outline ();
1841
1842 nameddest = p + 9 + off;
1843 if (state.type == DPDF && nameddest && *nameddest) {
1844 struct anchor a;
1845 fz_link_dest dest;
1846 pdf_obj *needle, *obj;
1847
1848 needle = pdf_new_string (state.ctx, nameddest,
1849 strlen (nameddest));
1850 obj = pdf_lookup_dest (state.u.pdf, needle);
1851 if (obj) {
1852 dest = pdf_parse_link_dest (state.u.pdf, obj);
1853
1854 a = desttoanchor (&dest);
1855 if (a.n >= 0) {
1856 printd ("a %d %d %d", a.n, a.x, a.y);
1857 }
1858 else {
1859 printd ("emsg failed to parse destination `%s'\n",
1860 nameddest);
1861 }
1862 }
1863 else {
1864 printd ("emsg destination `%s' not found\n",
1865 nameddest);
1866 }
1867 pdf_drop_obj (needle);
1868 }
1869
1870 state.gen++;
1871 unlock ("reqlayout");
1872 printd ("continue %d", state.pagecount);
1873 }
1874 else if (!strncmp ("page", p, 4)) {
1875 double a, b;
1876 struct page *page;
1877 int pageno, pindex, ret;
1878
1879 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1880 if (ret != 2) {
1881 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1882 }
1883
1884 lock ("page");
1885 a = now ();
1886 page = loadpage (pageno, pindex);
1887 b = now ();
1888 unlock ("page");
1889
1890 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1891 }
1892 else if (!strncmp ("tile", p, 4)) {
1893 int x, y, w, h, ret;
1894 struct page *page;
1895 struct tile *tile;
1896 double a, b;
1897 void *data;
1898
1899 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1900 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1901 if (ret != 6) {
1902 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1903 }
1904
1905 lock ("tile");
1906 a = now ();
1907 tile = rendertile (page, x, y, w, h, data);
1908 b = now ();
1909 unlock ("tile");
1910
1911 printd ("tile %d %d %" FMT_ptr " %u %f",
1912 x, y,
1913 FMT_ptr_cast2 (tile),
1914 tile->w * tile->h * tile->pixmap->n,
1915 b - a);
1916 }
1917 else if (!strncmp ("settrim", p, 7)) {
1918 fz_irect fuzz;
1919 int trimmargins;
1920
1921 ret = sscanf (p + 7, " %d %d %d %d %d",
1922 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1923 if (ret != 5) {
1924 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1925 }
1926 printd ("clear");
1927 lock ("settrim");
1928 state.trimmargins = trimmargins;
1929 state.needoutline = 1;
1930 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1931 state.trimanew = 1;
1932 state.trimfuzz = fuzz;
1933 }
1934 state.pagedimcount = 0;
1935 free (state.pagedims);
1936 state.pagedims = NULL;
1937 initpdims ();
1938 layout ();
1939 process_outline ();
1940 unlock ("settrim");
1941 printd ("continue %d", state.pagecount);
1942 }
1943 else if (!strncmp ("sliceh", p, 6)) {
1944 int h;
1945
1946 ret = sscanf (p + 6, " %d", &h);
1947 if (ret != 1) {
1948 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1949 }
1950 if (h != state.sliceheight) {
1951 int i;
1952
1953 state.sliceheight = h;
1954 for (i = 0; i < state.texcount; ++i) {
1955 state.texowners[i].w = -1;
1956 state.texowners[i].h = -1;
1957 state.texowners[i].slice = NULL;
1958 }
1959 }
1960 }
1961 else if (!strncmp ("interrupt", p, 9)) {
1962 printd ("vmsg interrupted");
1963 }
1964 else {
1965 errx (1, "unknown command %.*s", len, p);
1966 }
1967 }
1968 return 0;
1969 }
1970
1971 CAMLprim value ml_realloctexts (value texcount_v)
1972 {
1973 CAMLparam1 (texcount_v);
1974 int ok;
1975
1976 if (trylock ("ml_realloctexts")) {
1977 ok = 0;
1978 goto done;
1979 }
1980 realloctexts (Int_val (texcount_v));
1981 ok = 1;
1982 unlock ("ml_realloctexts");
1983
1984 done:
1985 CAMLreturn (Val_bool (ok));
1986 }
1987
1988 static void showsel (struct page *page, int ox, int oy)
1989 {
1990 int seen = 0;
1991 fz_irect bbox;
1992 fz_rect rect;
1993 fz_text_line *line;
1994 fz_page_block *pageb;
1995 fz_text_block *block;
1996 struct mark first, last;
1997
1998 first = page->fmark;
1999 last = page->lmark;
2000
2001 if (!first.span || !last.span) return;
2002
2003 glEnable (GL_BLEND);
2004 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
2005 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
2006
2007 ox += state.pagedims[page->pdimno].bounds.x0;
2008 oy += state.pagedims[page->pdimno].bounds.y0;
2009 for (pageb = page->text->blocks;
2010 pageb < page->text->blocks + page->text->len;
2011 ++pageb) {
2012 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2013 block = pageb->u.text;
2014
2015 for (line = block->lines;
2016 line < block->lines + block->len;
2017 ++line) {
2018 fz_text_span *span;
2019 rect = fz_empty_rect;
2020
2021 for (span = line->first_span; span; span = span->next) {
2022 int i, j, k;
2023 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
2024
2025 j = 0;
2026 k = span->len - 1;
2027
2028 if (span == page->fmark.span && span == page->lmark.span) {
2029 seen = 1;
2030 j = MIN (first.i, last.i);
2031 k = MAX (first.i, last.i);
2032 }
2033 else if (span == first.span) {
2034 seen = 1;
2035 j = first.i;
2036 }
2037 else if (span == last.span) {
2038 seen = 1;
2039 k = last.i;
2040 }
2041
2042 if (seen) {
2043 for (i = j; i <= k; ++i) {
2044 fz_rect bbox;
2045 fz_union_rect (&rect,
2046 fz_text_char_bbox (&bbox, span, i));
2047 }
2048 fz_round_rect (&bbox, &rect);
2049 lprintf ("%d %d %d %d oy=%d ox=%d\n",
2050 bbox.x0,
2051 bbox.y0,
2052 bbox.x1,
2053 bbox.y1,
2054 oy, ox);
2055
2056 glRecti (bbox.x0 + ox, bbox.y0 + oy,
2057 bbox.x1 + ox, bbox.y1 + oy);
2058 if (span == last.span) {
2059 goto done;
2060 }
2061 }
2062 }
2063 }
2064 }
2065 done:
2066 glDisable (GL_BLEND);
2067 }
2068
2069 #include "glfont.c"
2070
2071 static void highlightlinks (struct page *page, int xoff, int yoff)
2072 {
2073 fz_matrix ctm, tm, pm;
2074 fz_link *link, *links;
2075
2076 switch (page->type) {
2077 case DPDF:
2078 links = page->u.pdfpage->links;
2079 break;
2080
2081 case DXPS:
2082 links = page->u.xpspage->links;
2083 break;
2084
2085 default:
2086 return;
2087 }
2088
2089 glEnable (GL_TEXTURE_1D);
2090 glEnable (GL_BLEND);
2091 glBindTexture (GL_TEXTURE_1D, state.stid);
2092
2093 xoff -= state.pagedims[page->pdimno].bounds.x0;
2094 yoff -= state.pagedims[page->pdimno].bounds.y0;
2095 fz_translate (&tm, xoff, yoff);
2096 pm = pagectm (page);
2097 fz_concat (&ctm, &pm, &tm);
2098
2099 glBegin (GL_LINES);
2100 for (link = links; link; link = link->next) {
2101 fz_point p1, p2, p3, p4;
2102
2103 p1.x = link->rect.x0;
2104 p1.y = link->rect.y0;
2105
2106 p2.x = link->rect.x1;
2107 p2.y = link->rect.y0;
2108
2109 p3.x = link->rect.x1;
2110 p3.y = link->rect.y1;
2111
2112 p4.x = link->rect.x0;
2113 p4.y = link->rect.y1;
2114
2115 fz_transform_point (&p1, &ctm);
2116 fz_transform_point (&p2, &ctm);
2117 fz_transform_point (&p3, &ctm);
2118 fz_transform_point (&p4, &ctm);
2119
2120 switch (link->dest.kind) {
2121 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2122 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2123 case FZ_LINK_LAUNCH: glColor3ub (0, 255, 0); break;
2124 default: glColor3ub (0, 0, 0); break;
2125 }
2126
2127 {
2128 float w, h, s, t;
2129
2130 w = p2.x - p1.x;
2131 h = p2.y - p1.y;
2132 t = sqrtf (w*w + h*h) * .25f;
2133
2134 w = p3.x - p2.x;
2135 h = p3.y - p2.y;
2136 s = sqrtf (w*w + h*h) * .25f;
2137
2138 glTexCoord1i (0);
2139 glVertex2f (p1.x, p1.y);
2140 glTexCoord1f (t);
2141 glVertex2f (p2.x, p2.y);
2142
2143 glTexCoord1i (0);
2144 glVertex2f (p2.x, p2.y);
2145 glTexCoord1f (s);
2146 glVertex2f (p3.x, p3.y);
2147
2148 glTexCoord1i (0);
2149 glVertex2f (p3.x, p3.y);
2150 glTexCoord1f (t);
2151 glVertex2f (p4.x, p4.y);
2152
2153 glTexCoord1i (0);
2154 glVertex2f (p4.x, p4.y);
2155 glTexCoord1f (s);
2156 glVertex2f (p1.x, p1.y);
2157 }
2158 }
2159 glEnd ();
2160
2161 glDisable (GL_BLEND);
2162 glDisable (GL_TEXTURE_1D);
2163 }
2164
2165 static int compareslinks (const void *l, const void *r)
2166 {
2167 struct slink const *ls = l;
2168 struct slink const *rs = r;
2169 if (ls->bbox.y0 == rs->bbox.y0) {
2170 return rs->bbox.x0 - rs->bbox.x0;
2171 }
2172 return ls->bbox.y0 - rs->bbox.y0;
2173 }
2174
2175 static void droptext (struct page *page)
2176 {
2177 if (page->text) {
2178 fz_free_text_page (state.ctx, page->text);
2179 page->fmark.i = -1;
2180 page->lmark.i = -1;
2181 page->fmark.span = NULL;
2182 page->lmark.span = NULL;
2183 page->text = NULL;
2184 }
2185 if (page->sheet) {
2186 fz_free_text_sheet (state.ctx, page->sheet);
2187 page->sheet = NULL;
2188 }
2189 }
2190
2191 static void dropslinks (struct page *page)
2192 {
2193 if (page->slinks) {
2194 free (page->slinks);
2195 page->slinks = NULL;
2196 page->slinkcount = 0;
2197 }
2198 }
2199
2200 static void ensureslinks (struct page *page)
2201 {
2202 fz_matrix ctm;
2203 int i, count = 0;
2204 size_t slinksize = sizeof (*page->slinks);
2205 fz_link *link, *links;
2206
2207 if (state.gen != page->sgen) {
2208 dropslinks (page);
2209 page->sgen = state.gen;
2210 }
2211 if (page->slinks) return;
2212
2213 switch (page->type) {
2214 case DPDF:
2215 links = page->u.pdfpage->links;
2216 trimctm (page->u.pdfpage, page->pdimno);
2217 fz_concat (&ctm,
2218 &state.pagedims[page->pdimno].tctm,
2219 &state.pagedims[page->pdimno].ctm);
2220 break;
2221
2222 case DXPS:
2223 links = page->u.xpspage->links;
2224 ctm = state.pagedims[page->pdimno].ctm;
2225 break;
2226
2227 default:
2228 return;
2229 }
2230
2231 for (link = links; link; link = link->next) {
2232 count++;
2233 }
2234 if (count > 0) {
2235 page->slinkcount = count;
2236 page->slinks = calloc (count, slinksize);
2237 if (!page->slinks) {
2238 err (1, "realloc slinks %d", count);
2239 }
2240
2241 for (i = 0, link = links; link; ++i, link = link->next) {
2242 fz_rect rect;
2243
2244 rect = link->rect;
2245 fz_transform_rect (&rect, &ctm);
2246 page->slinks[i].link = link;
2247 fz_round_rect (&page->slinks[i].bbox, &rect);
2248 }
2249 qsort (page->slinks, count, slinksize, compareslinks);
2250 }
2251 }
2252
2253 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2254 static void fmt_linkn (char *s, unsigned int u)
2255 {
2256 unsigned int len; unsigned int q;
2257 int zma = 'z' - 'a' + 1;
2258 len = 1; q = u;
2259 while (q > zma - 1) { ++len; q /= zma; }
2260 if (s) {
2261 s += len;
2262 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2263 /* handles u == 0 */
2264 }
2265 s[len] = 0;
2266 }
2267
2268 static void highlightslinks (struct page *page, int xoff, int yoff,
2269 int noff, char *targ, int tlen, int hfsize)
2270 {
2271 int i;
2272 char buf[40];
2273 struct slink *slink;
2274 double x0, y0, x1, y1, w;
2275
2276 ensureslinks (page);
2277 glColor3ub (0xc3, 0xb0, 0x91);
2278 for (i = 0; i < page->slinkcount; ++i) {
2279 fmt_linkn (buf, i + noff);
2280 if (!tlen || !strncmp (targ, buf, tlen)) {
2281 slink = &page->slinks[i];
2282
2283 x0 = slink->bbox.x0 + xoff - 5;
2284 y1 = slink->bbox.y0 + yoff - 5;
2285 y0 = y1 + 10 + hfsize;
2286 w = measure_string (state.face, hfsize, buf);
2287 x1 = x0 + w + 10;
2288 glRectd (x0, y0, x1, y1);
2289 }
2290 }
2291
2292 glEnable (GL_BLEND);
2293 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2294 glEnable (GL_TEXTURE_2D);
2295 glColor3ub (0, 0, 0);
2296 for (i = 0; i < page->slinkcount; ++i) {
2297 fmt_linkn (buf, i + noff);
2298 if (!tlen || !strncmp (targ, buf, tlen)) {
2299 slink = &page->slinks[i];
2300
2301 x0 = slink->bbox.x0 + xoff;
2302 y0 = slink->bbox.y0 + yoff + hfsize;
2303 draw_string (state.face, hfsize, x0, y0, buf);
2304 }
2305 }
2306 glDisable (GL_TEXTURE_2D);
2307 glDisable (GL_BLEND);
2308 }
2309
2310
2311 static void uploadslice (struct tile *tile, struct slice *slice)
2312 {
2313 int offset;
2314 struct slice *slice1;
2315 unsigned char *texdata;
2316
2317 offset = 0;
2318 for (slice1 = tile->slices; slice != slice1; slice1++) {
2319 offset += slice1->h * tile->w * tile->pixmap->n;
2320 }
2321 if (slice->texindex != -1 && slice->texindex < state.texcount
2322 && state.texowners[slice->texindex].slice == slice) {
2323 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2324 }
2325 else {
2326 int subimage = 0;
2327 int texindex = state.texindex++ % state.texcount;
2328
2329 if (state.texowners[texindex].w == tile->w) {
2330 if (state.texowners[texindex].h >= slice->h) {
2331 subimage = 1;
2332 }
2333 else {
2334 state.texowners[texindex].h = slice->h;
2335 }
2336 }
2337 else {
2338 state.texowners[texindex].h = slice->h;
2339 }
2340
2341 state.texowners[texindex].w = tile->w;
2342 state.texowners[texindex].slice = slice;
2343 slice->texindex = texindex;
2344
2345 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2346 if (tile->pbo) {
2347 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2348 texdata = 0;
2349 }
2350 else {
2351 texdata = tile->pixmap->samples;
2352 }
2353 if (subimage) {
2354 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2355 0,
2356 0,
2357 0,
2358 tile->w,
2359 slice->h,
2360 state.texform,
2361 state.texty,
2362 texdata+offset
2363 );
2364 }
2365 else {
2366 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2367 0,
2368 state.texiform,
2369 tile->w,
2370 slice->h,
2371 0,
2372 state.texform,
2373 state.texty,
2374 texdata+offset
2375 );
2376 }
2377 if (tile->pbo) {
2378 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2379 }
2380 }
2381 }
2382
2383 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2384 {
2385 CAMLparam2 (args_v, ptr_v);
2386 int dispx = Int_val (Field (args_v, 0));
2387 int dispy = Int_val (Field (args_v, 1));
2388 int dispw = Int_val (Field (args_v, 2));
2389 int disph = Int_val (Field (args_v, 3));
2390 int tilex = Int_val (Field (args_v, 4));
2391 int tiley = Int_val (Field (args_v, 5));
2392 char *s = String_val (ptr_v);
2393 struct tile *tile = parse_pointer ("ml_drawtile", s);
2394
2395 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2396 {
2397 int slicey, firstslice;
2398 struct slice *slice;
2399
2400 firstslice = tiley / tile->sliceheight;
2401 slice = &tile->slices[firstslice];
2402 slicey = tiley % tile->sliceheight;
2403
2404 while (disph > 0) {
2405 int dh;
2406
2407 dh = slice->h - slicey;
2408 dh = MIN (disph, dh);
2409 uploadslice (tile, slice);
2410
2411 glBegin (GL_QUADS);
2412 {
2413 glTexCoord2i (tilex, slicey);
2414 glVertex2i (dispx, dispy);
2415
2416 glTexCoord2i (tilex+dispw, slicey);
2417 glVertex2i (dispx+dispw, dispy);
2418
2419 glTexCoord2i (tilex+dispw, slicey+dh);
2420 glVertex2i (dispx+dispw, dispy+dh);
2421
2422 glTexCoord2i (tilex, slicey+dh);
2423 glVertex2i (dispx, dispy+dh);
2424 }
2425 glEnd ();
2426
2427 dispy += dh;
2428 disph -= dh;
2429 slice++;
2430 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2431 slicey = 0;
2432 }
2433 }
2434 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2435 CAMLreturn (Val_unit);
2436 }
2437
2438 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2439 value xoff_v, value yoff_v,
2440 value li_v)
2441 {
2442 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2443 int xoff = Int_val (xoff_v);
2444 int yoff = Int_val (yoff_v);
2445 int noff = Int_val (Field (li_v, 0));
2446 char *targ = String_val (Field (li_v, 1));
2447 int tlen = caml_string_length (Field (li_v, 1));
2448 int hfsize = Int_val (Field (li_v, 2));
2449 char *s = String_val (ptr_v);
2450 int hlmask = Int_val (hlinks_v);
2451 struct page *page = parse_pointer ("ml_postprocess", s);
2452
2453 if (!page->u.ptr) {
2454 /* deal with loadpage failed pages */
2455 goto done;
2456 }
2457
2458 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2459 if (trylock ("ml_postprocess")) {
2460 noff = 0;
2461 goto done;
2462 }
2463 if (hlmask & 2) {
2464 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2465 noff = page->slinkcount;
2466 }
2467 if (page->tgen == state.gen) {
2468 showsel (page, xoff, yoff);
2469 }
2470 unlock ("ml_postprocess");
2471
2472 done:
2473 CAMLreturn (Val_int (noff));
2474 }
2475
2476 static fz_link *getlink (struct page *page, int x, int y)
2477 {
2478 fz_point p;
2479 fz_matrix ctm;
2480 const fz_matrix *tctm;
2481 fz_link *link, *links;
2482
2483 switch (page->type) {
2484 case DPDF:
2485 trimctm (page->u.pdfpage, page->pdimno);
2486 tctm = &state.pagedims[page->pdimno].tctm;
2487 links = page->u.pdfpage->links;
2488 break;
2489
2490 case DXPS:
2491 tctm = &fz_identity;
2492 links = page->u.xpspage->links;
2493 break;
2494
2495 default:
2496 return NULL;
2497 }
2498 p.x = x;
2499 p.y = y;
2500
2501 fz_concat (&ctm, tctm, &state.pagedims[page->pdimno].ctm);
2502 fz_invert_matrix (&ctm, &ctm);
2503 fz_transform_point (&p, &ctm);
2504
2505 for (link = links; link; link = link->next) {
2506 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2507 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2508 return link;
2509 }
2510 }
2511 }
2512 return NULL;
2513 }
2514
2515 static void ensuretext (struct page *page)
2516 {
2517 if (state.gen != page->tgen) {
2518 droptext (page);
2519 page->tgen = state.gen;
2520 }
2521 if (!page->text) {
2522 fz_matrix ctm;
2523 fz_device *tdev;
2524
2525 page->text = fz_new_text_page (state.ctx, &fz_infinite_rect);
2526 page->sheet = fz_new_text_sheet (state.ctx);
2527 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2528 ctm = pagectm (page);
2529 fz_run_display_list (page->dlist, tdev, &ctm, &fz_infinite_rect, NULL);
2530 qsort (page->text->blocks, page->text->len,
2531 sizeof (*page->text->blocks), compareblocks);
2532 fz_free_device (tdev);
2533 }
2534 }
2535
2536 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2537 {
2538 CAMLparam2 (start_page_v, dir_v);
2539 CAMLlocal1 (ret_v);
2540 int i, dir = Int_val (dir_v);
2541 int start_page = Int_val (start_page_v);
2542 int end_page = dir > 0 ? state.pagecount : -1;
2543
2544 ret_v = Val_int (0);
2545 if (!(state.type == DPDF || state.type == DXPS)) {
2546 goto done;
2547 }
2548
2549 lock ("ml_findpage_with_links");
2550 for (i = start_page + dir; i != end_page; i += dir) {
2551 int found;
2552
2553 switch (state.type) {
2554 case DPDF:
2555 {
2556 pdf_page *page = NULL;
2557
2558 fz_try (state.ctx) {
2559 page = pdf_load_page (state.u.pdf, i);
2560 found = !!page->links;
2561 }
2562 fz_catch (state.ctx) {
2563 found = 0;
2564 }
2565 if (page) {
2566 freepdfpage (page);
2567 }
2568 }
2569 break;
2570 case DXPS:
2571 {
2572 xps_page *page = xps_load_page (state.u.xps, i);
2573 found = !!page->links;
2574 freexpspage (page);
2575 }
2576 break;
2577
2578 default:
2579 ARSERT (0 && "invalid document type");
2580 }
2581
2582 if (found) {
2583 ret_v = caml_alloc_small (1, 1);
2584 Field (ret_v, 0) = Val_int (i);
2585 goto unlock;
2586 }
2587 }
2588 unlock:
2589 unlock ("ml_findpage_with_links");
2590
2591 done:
2592 CAMLreturn (ret_v);
2593 }
2594
2595 enum { dir_first, dir_last};
2596 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2597
2598 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2599 {
2600 CAMLparam2 (ptr_v, dir_v);
2601 CAMLlocal2 (ret_v, pos_v);
2602 struct page *page;
2603 int dirtag, i, slinkindex;
2604 struct slink *found = NULL ,*slink;
2605 char *s = String_val (ptr_v);
2606
2607 page = parse_pointer ("ml_findlink", s);
2608 ret_v = Val_int (0);
2609 if (trylock ("ml_findlink")) {
2610 goto done;
2611 }
2612
2613 ensureslinks (page);
2614
2615 if (Is_block (dir_v)) {
2616 dirtag = Tag_val (dir_v);
2617 switch (dirtag) {
2618 case dir_first_visible:
2619 {
2620 int x0, y0, dir, first_index, last_index;
2621
2622 pos_v = Field (dir_v, 0);
2623 x0 = Int_val (Field (pos_v, 0));
2624 y0 = Int_val (Field (pos_v, 1));
2625 dir = Int_val (Field (pos_v, 2));
2626
2627 if (dir >= 0) {
2628 dir = 1;
2629 first_index = 0;
2630 last_index = page->slinkcount;
2631 }
2632 else {
2633 first_index = page->slinkcount - 1;
2634 last_index = -1;
2635 }
2636
2637 for (i = first_index; i != last_index; i += dir) {
2638 slink = &page->slinks[i];
2639 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2640 found = slink;
2641 break;
2642 }
2643 }
2644 }
2645 break;
2646
2647 case dir_left:
2648 slinkindex = Int_val (Field (dir_v, 0));
2649 found = &page->slinks[slinkindex];
2650 for (i = slinkindex - 1; i >= 0; --i) {
2651 slink = &page->slinks[i];
2652 if (slink->bbox.x0 < found->bbox.x0) {
2653 found = slink;
2654 break;
2655 }
2656 }
2657 break;
2658
2659 case dir_right:
2660 slinkindex = Int_val (Field (dir_v, 0));
2661 found = &page->slinks[slinkindex];
2662 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2663 slink = &page->slinks[i];
2664 if (slink->bbox.x0 > found->bbox.x0) {
2665 found = slink;
2666 break;
2667 }
2668 }
2669 break;
2670
2671 case dir_down:
2672 slinkindex = Int_val (Field (dir_v, 0));
2673 found = &page->slinks[slinkindex];
2674 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2675 slink = &page->slinks[i];
2676 if (slink->bbox.y0 >= found->bbox.y0) {
2677 found = slink;
2678 break;
2679 }
2680 }
2681 break;
2682
2683 case dir_up:
2684 slinkindex = Int_val (Field (dir_v, 0));
2685 found = &page->slinks[slinkindex];
2686 for (i = slinkindex - 1; i >= 0; --i) {
2687 slink = &page->slinks[i];
2688 if (slink->bbox.y0 <= found->bbox.y0) {
2689 found = slink;
2690 break;
2691 }
2692 }
2693 break;
2694 }
2695 }
2696 else {
2697 dirtag = Int_val (dir_v);
2698 switch (dirtag) {
2699 case dir_first:
2700 found = page->slinks;
2701 break;
2702
2703 case dir_last:
2704 if (page->slinks) {
2705 found = page->slinks + (page->slinkcount - 1);
2706 }
2707 break;
2708 }
2709 }
2710 if (found) {
2711 ret_v = caml_alloc_small (2, 1);
2712 Field (ret_v, 0) = Val_int (found - page->slinks);
2713 }
2714
2715 unlock ("ml_findlink");
2716 done:
2717 CAMLreturn (ret_v);
2718 }
2719
2720 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2721
2722 #define LINKTOVAL \
2723 { \
2724 int pageno; \
2725 \
2726 switch (link->dest.kind) { \
2727 case FZ_LINK_GOTO: \
2728 { \
2729 fz_point p; \
2730 \
2731 pageno = link->dest.ld.gotor.page; \
2732 p.x = 0; \
2733 p.y = 0; \
2734 \
2735 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2736 p.y = link->dest.ld.gotor.lt.y; \
2737 fz_transform_point (&p, &pdim->lctm); \
2738 } \
2739 tup_v = caml_alloc_tuple (2); \
2740 ret_v = caml_alloc_small (1, ugoto); \
2741 Field (tup_v, 0) = Val_int (pageno); \
2742 Field (tup_v, 1) = Val_int (p.y); \
2743 Field (ret_v, 0) = tup_v; \
2744 } \
2745 break; \
2746 \
2747 case FZ_LINK_URI: \
2748 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2749 ret_v = caml_alloc_small (1, uuri); \
2750 Field (ret_v, 0) = str_v; \
2751 break; \
2752 \
2753 case FZ_LINK_LAUNCH: \
2754 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2755 ret_v = caml_alloc_small (1, ulaunch); \
2756 Field (ret_v, 0) = str_v; \
2757 break; \
2758 \
2759 case FZ_LINK_NAMED: \
2760 str_v = caml_copy_string (link->dest.ld.named.named); \
2761 ret_v = caml_alloc_small (1, unamed); \
2762 Field (ret_v, 0) = str_v; \
2763 break; \
2764 \
2765 case FZ_LINK_GOTOR: \
2766 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2767 pageno = link->dest.ld.gotor.page; \
2768 tup_v = caml_alloc_tuple (2); \
2769 ret_v = caml_alloc_small (1, uremote); \
2770 Field (tup_v, 0) = str_v; \
2771 Field (tup_v, 1) = Val_int (pageno); \
2772 Field (ret_v, 0) = tup_v; \
2773 break; \
2774 \
2775 default: \
2776 { \
2777 char buf[80]; \
2778 \
2779 snprintf (buf, sizeof (buf), \
2780 "unhandled link kind %d", link->dest.kind); \
2781 str_v = caml_copy_string (buf); \
2782 ret_v = caml_alloc_small (1, uunexpected); \
2783 Field (ret_v, 0) = str_v; \
2784 } \
2785 break; \
2786 } \
2787 }
2788
2789 CAMLprim value ml_getlink (value ptr_v, value n_v)
2790 {
2791 CAMLparam2 (ptr_v, n_v);
2792 CAMLlocal3 (ret_v, tup_v, str_v);
2793 fz_link *link;
2794 struct page *page;
2795 struct pagedim *pdim;
2796 char *s = String_val (ptr_v);
2797
2798 ret_v = Val_int (0);
2799 if (trylock ("ml_getlink")) {
2800 goto done;
2801 }
2802
2803 page = parse_pointer ("ml_getlink", s);
2804 ensureslinks (page);
2805 pdim = &state.pagedims[page->pdimno];
2806 link = page->slinks[Int_val (n_v)].link;
2807 LINKTOVAL;
2808
2809 unlock ("ml_getlink");
2810 done:
2811 CAMLreturn (ret_v);
2812 }
2813
2814 CAMLprim value ml_getlinkcount (value ptr_v)
2815 {
2816 CAMLparam1 (ptr_v);
2817 struct page *page;
2818 char *s = String_val (ptr_v);
2819
2820 page = parse_pointer ("ml_getlinkcount", s);
2821 CAMLreturn (Val_int (page->slinkcount));
2822 }
2823
2824 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2825 {
2826 CAMLparam2 (ptr_v, n_v);
2827 CAMLlocal1 (ret_v);
2828 struct page *page;
2829 struct slink *slink;
2830 char *s = String_val (ptr_v);
2831
2832 page = parse_pointer ("ml_getlinkrect", s);
2833 ret_v = caml_alloc_tuple (4);
2834 if (trylock ("ml_getlinkrect")) {
2835 Field (ret_v, 0) = Val_int (0);
2836 Field (ret_v, 1) = Val_int (0);
2837 Field (ret_v, 2) = Val_int (0);
2838 Field (ret_v, 3) = Val_int (0);
2839 goto done;
2840 }
2841 ensureslinks (page);
2842
2843 slink = &page->slinks[Int_val (n_v)];
2844 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2845 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2846 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2847 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2848 unlock ("ml_getlinkrect");
2849
2850 done:
2851 CAMLreturn (ret_v);
2852 }
2853
2854 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2855 {
2856 CAMLparam3 (ptr_v, x_v, y_v);
2857 CAMLlocal3 (ret_v, tup_v, str_v);
2858 fz_link *link;
2859 struct page *page;
2860 char *s = String_val (ptr_v);
2861 int x = Int_val (x_v), y = Int_val (y_v);
2862 struct pagedim *pdim;
2863
2864 ret_v = Val_int (0);
2865 if (trylock ("ml_whatsunder")) {
2866 goto done;
2867 }
2868
2869 page = parse_pointer ("ml_whatsunder", s);
2870 pdim = &state.pagedims[page->pdimno];
2871 x += pdim->bounds.x0;
2872 y += pdim->bounds.y0;
2873 link = getlink (page, x, y);
2874 if (link) {
2875 LINKTOVAL;
2876 }
2877 else {
2878 fz_rect *b;
2879 fz_page_block *pageb;
2880 fz_text_block *block;
2881
2882 ensuretext (page);
2883 for (pageb = page->text->blocks;
2884 pageb < page->text->blocks + page->text->len;
2885 ++pageb) {
2886 fz_text_line *line;
2887 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
2888 block = pageb->u.text;
2889
2890 b = &block->bbox;
2891 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2892 continue;
2893
2894 for (line = block->lines;
2895 line < block->lines + block->len;
2896 ++line) {
2897 fz_text_span *span;
2898
2899 b = &line->bbox;
2900 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2901 continue;
2902
2903 for (span = line->first_span; span; span = span->next) {
2904 int charnum;
2905
2906 b = &span->bbox;
2907 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2908 continue;
2909
2910 for (charnum = 0; charnum < span->len; ++charnum) {
2911 fz_rect bbox;
2912 fz_text_char_bbox (&bbox, span, charnum);
2913 b = &bbox;
2914
2915 if (x >= b->x0 && x <= b->x1
2916 && y >= b->y0 && y <= b->y1) {
2917 fz_text_style *style = span->text->style;
2918 const char *n2 =
2919 style->font && style->font->name
2920 ? style->font->name
2921 : "Span has no font name"
2922 ;
2923 FT_FaceRec *face = style->font->ft_face;
2924 if (face && face->family_name) {
2925 char *s;
2926 char *n1 = face->family_name;
2927 size_t l1 = strlen (n1);
2928 size_t l2 = strlen (n2);
2929
2930 if (l1 != l2 || memcmp (n1, n2, l1)) {
2931 s = malloc (l1 + l2 + 2);
2932 if (s) {
2933 memcpy (s, n2, l2);
2934 s[l2] = '=';
2935 memcpy (s + l2 + 1, n1, l1 + 1);
2936 str_v = caml_copy_string (s);
2937 free (s);
2938 }
2939 }
2940 }
2941 if (str_v == 0) {
2942 str_v = caml_copy_string (n2);
2943 }
2944 ret_v = caml_alloc_small (1, utext);
2945 Field (ret_v, 0) = str_v;
2946 goto unlock;
2947 }
2948 }
2949 }
2950 }
2951 }
2952 }
2953 unlock:
2954 unlock ("ml_whatsunder");
2955
2956 done:
2957 CAMLreturn (ret_v);
2958 }
2959
2960 enum { mark_page, mark_block, mark_line, mark_word };
2961
2962 static int uninteresting (int c)
2963 {
2964 return c == ' ' || c == '\n' || c == '\t' || c == '\n' || c == '\r'
2965 || ispunct (c);
2966 }
2967
2968 CAMLprim value ml_markunder (value ptr_v, value x_v, value y_v, value mark_v)
2969 {
2970 CAMLparam4 (ptr_v, x_v, y_v, mark_v);
2971 CAMLlocal3 (ret_v, tup_v, str_v);
2972 fz_rect *b;
2973 struct page *page;
2974 fz_text_line *line;
2975 fz_page_block *pageb;
2976 fz_text_block *block;
2977 struct pagedim *pdim;
2978 int mark = Int_val (mark_v);
2979 char *s = String_val (ptr_v);
2980 int x = Int_val (x_v), y = Int_val (y_v);
2981
2982 ret_v = Val_bool (0);
2983 if (trylock ("ml_markunder")) {
2984 goto done;
2985 }
2986
2987 page = parse_pointer ("ml_markunder", s);
2988 pdim = &state.pagedims[page->pdimno];
2989 x += pdim->bounds.x0;
2990 y += pdim->bounds.y0;
2991
2992 ensuretext (page);
2993
2994 if (mark == mark_page) {
2995 int i;
2996
2997 for (i = page->text->len - 1; i >= 0; --i) {
2998 pageb = &page->text->blocks[i];
2999 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3000 }
3001 if (i < 0) goto unlock;
3002
3003 block = pageb->u.text;
3004
3005 page->fmark.i = 0;
3006 page->fmark.span = block->lines->first_span;
3007
3008 line = &block->lines[block->len - 1];
3009 page->lmark.i = line->last_span->len - 1;
3010 page->lmark.span = line->last_span;
3011 ret_v = Val_bool (1);
3012 goto unlock;
3013 }
3014
3015 for (pageb = page->text->blocks;
3016 pageb < page->text->blocks + page->text->len;
3017 ++pageb) {
3018 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3019 block = pageb->u.text;
3020
3021 b = &block->bbox;
3022 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3023 continue;
3024
3025 if (mark == mark_block) {
3026 page->fmark.i = 0;
3027 page->fmark.span = block->lines->first_span;
3028
3029 line = &block->lines[block->len - 1];
3030 page->lmark.i = line->last_span->len - 1;
3031 page->lmark.span = line->last_span;
3032 ret_v = Val_bool (1);
3033 goto unlock;
3034 }
3035
3036 for (line = block->lines;
3037 line < block->lines + block->len;
3038 ++line) {
3039 fz_text_span *span;
3040
3041 b = &line->bbox;
3042 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3043 continue;
3044
3045 if (mark == mark_line) {
3046 page->fmark.i = 0;
3047 page->fmark.span = line->first_span;
3048
3049 page->lmark.i = line->last_span->len - 1;
3050 page->lmark.span = line->last_span;
3051 ret_v = Val_bool (1);
3052 goto unlock;
3053 }
3054
3055 for (span = line->first_span; span; span = span->next) {
3056 int charnum;
3057
3058 b = &span->bbox;
3059 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
3060 continue;
3061
3062 for (charnum = 0; charnum < span->len; ++charnum) {
3063 fz_rect bbox;
3064 fz_text_char_bbox (&bbox, span, charnum);
3065 b = &bbox;
3066
3067 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1) {
3068 /* unicode ftw */
3069 int charnum2, charnum3 = -1, charnum4 = -1;
3070
3071 if (uninteresting (span->text[charnum].c)) goto unlock;
3072
3073 for (charnum2 = charnum; charnum2 >= 0; --charnum2) {
3074 if (uninteresting (span->text[charnum2].c)) {
3075 charnum3 = charnum2 + 1;
3076 break;
3077 }
3078 }
3079 if (charnum3 == -1) charnum3 = 0;
3080
3081 for (charnum2 = charnum + 1;
3082 charnum2 < span->len;
3083 ++charnum2) {
3084 if (uninteresting (span->text[charnum2].c)) break;
3085 charnum4 = charnum2;
3086 }
3087 if (charnum4 == -1) goto unlock;
3088
3089 page->fmark.i = charnum3;
3090 page->fmark.span = span;
3091
3092 page->lmark.i = charnum4;
3093 page->lmark.span = span;
3094 ret_v = Val_bool (1);
3095 goto unlock;
3096 }
3097 }
3098 }
3099 }
3100 }
3101 unlock:
3102 if (!Bool_val (ret_v)) {
3103 page->fmark.span = NULL;
3104 page->lmark.span = NULL;
3105 page->fmark.i = 0;
3106 page->lmark.i = 0;
3107 }
3108 unlock ("ml_markunder");
3109
3110 done:
3111 CAMLreturn (ret_v);
3112 }
3113
3114 CAMLprim value ml_seltext (value ptr_v, value rect_v)
3115 {
3116 CAMLparam2 (ptr_v, rect_v);
3117 fz_rect b;
3118 struct page *page;
3119 struct pagedim *pdim;
3120 int i, x0, x1, y0, y1;
3121 char *s = String_val (ptr_v);
3122 int fi = 0, li = 0;
3123 fz_page_block *pageb;
3124 fz_text_block *block;
3125 fz_text_span *span, *fspan, *lspan;
3126 fz_text_line *line, *fline = NULL, *lline = NULL;
3127
3128 if (trylock ("ml_seltext")) {
3129 goto done;
3130 }
3131
3132 page = parse_pointer ("ml_seltext", s);
3133 ensuretext (page);
3134
3135 pdim = &state.pagedims[page->pdimno];
3136 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
3137 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
3138 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
3139 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
3140
3141 if (0) {
3142 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3143 glColor3ub (128, 128, 128);
3144 glRecti (x0, y0, x1, y1);
3145 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3146 }
3147
3148 fspan = lspan = NULL;
3149
3150 for (pageb= page->text->blocks;
3151 pageb < page->text->blocks + page->text->len;
3152 ++pageb) {
3153 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3154 block = pageb->u.text;
3155 for (line = block->lines;
3156 line < block->lines + block->len;
3157 ++line) {
3158 fz_text_span *span;
3159
3160 for (span = line->first_span; span; span = span->next) {
3161 for (i = 0; i < span->len; ++i) {
3162 int selected = 0;
3163
3164 fz_text_char_bbox (&b, span, i);
3165
3166 if (x0 >= b.x0 && x0 <= b.x1
3167 && y0 >= b.y0 && y0 <= b.y1) {
3168 fspan = span;
3169 fline = line;
3170 fi = i;
3171 selected = 1;
3172 }
3173 if (x1 >= b.x0 && x1 <= b.x1
3174 && y1 >= b.y0 && y1 <= b.y1) {
3175 lspan = span;
3176 lline = line;
3177 li = i;
3178 selected = 1;
3179 }
3180 if (0 && selected) {
3181 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
3182 glColor3ub (128, 128, 128);
3183 glRecti (b.x0, b.y0, b.x1, b.y1);
3184 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
3185 }
3186 }
3187 }
3188 }
3189 }
3190 if (y1 < y0 || x1 < x0) {
3191 int swap = 0;
3192
3193 if (fspan == lspan) {
3194 swap = 1;
3195 }
3196 else {
3197 if (y1 < y0) {
3198 if (fline != lline) {
3199 swap = 1;
3200 }
3201 }
3202 }
3203
3204 if (swap) {
3205 i = fi;
3206 span = fspan;
3207
3208 fi = li;
3209 fspan = lspan;
3210
3211 li = i;
3212 lspan = span;
3213 }
3214 }
3215
3216 page->fmark.i = fi;
3217 page->fmark.span = fspan;
3218
3219 page->lmark.i = li;
3220 page->lmark.span = lspan;
3221
3222 unlock ("ml_seltext");
3223
3224 done:
3225 CAMLreturn (Val_unit);
3226 }
3227
3228 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
3229 {
3230 char buf[4];
3231 int i, len, ret;
3232
3233 for (i = a; i <= b; ++i) {
3234 len = fz_runetochar (buf, span->text[i].c);
3235 ret = fwrite (buf, len, 1, f);
3236
3237 if (ret != 1) {
3238 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
3239 len, ret, strerror (errno));
3240 return -1;
3241 }
3242 }
3243 return 0;
3244 }
3245
3246 #ifdef __CYGWIN__
3247 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
3248 {
3249 caml_failwith ("ml_popen not implemented under Cygwin");
3250 }
3251 #else
3252 CAMLprim value ml_popen (value command_v, value fds_v)
3253 {
3254 CAMLparam2 (command_v, fds_v);
3255 CAMLlocal2 (l_v, tup_v);
3256 int ret;
3257 char *msg = NULL;
3258 value earg_v = Nothing;
3259 posix_spawnattr_t attr;
3260 posix_spawn_file_actions_t fa;
3261 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
3262
3263 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3264 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3265 }
3266
3267 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3268 msg = "posix_spawnattr_init";
3269 goto fail1;
3270 }
3271
3272 #ifdef POSIX_SPAWN_USEVFORK
3273 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3274 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3275 goto fail;
3276 }
3277 #endif
3278
3279 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3280 int fd1, fd2;
3281
3282 tup_v = Field (l_v, 0);
3283 fd1 = Int_val (Field (tup_v, 0));
3284 fd2 = Int_val (Field (tup_v, 1));
3285 if (fd2 < 0) {
3286 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3287 msg = "posix_spawn_file_actions_addclose";
3288 earg_v = tup_v;
3289 goto fail;
3290 }
3291 }
3292 else {
3293 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3294 msg = "posix_spawn_file_actions_adddup2";
3295 earg_v = tup_v;
3296 goto fail;
3297 }
3298 }
3299 }
3300
3301 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
3302 msg = "posix_spawn";
3303 goto fail;
3304 }
3305
3306 fail:
3307 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3308 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3309 }
3310
3311 fail1:
3312 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3313 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3314 strerror (ret));
3315 }
3316
3317 if (msg)
3318 unix_error (ret, msg, earg_v);
3319
3320 CAMLreturn (Val_unit);
3321 }
3322 #endif
3323
3324 CAMLprim value ml_copysel (value fd_v, value ptr_v, value clear_v)
3325 {
3326 CAMLparam3 (fd_v, ptr_v, clear_v);
3327 FILE *f;
3328 int seen = 0;
3329 struct page *page;
3330 fz_text_line *line;
3331 fz_page_block *pageb;
3332 fz_text_block *block;
3333 int fd = Int_val (fd_v);
3334 char *s = String_val (ptr_v);
3335 int clear = Bool_val (clear_v);
3336
3337 if (trylock ("ml_copysel")) {
3338 goto done;
3339 }
3340
3341 page = parse_pointer ("ml_sopysel", s);
3342
3343 if (!page->fmark.span || !page->lmark.span) {
3344 fprintf (stderr, "nothing to copy\n");
3345 goto unlock;
3346 }
3347
3348 f = fdopen (fd, "w");
3349 if (!f) {
3350 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3351 strerror (errno));
3352 f = stdout;
3353 }
3354
3355 for (pageb = page->text->blocks;
3356 pageb < page->text->blocks + page->text->len;
3357 ++pageb) {
3358 if (pageb->type != FZ_PAGE_BLOCK_TEXT) continue;
3359 block = pageb->u.text;
3360 for (line = block->lines;
3361 line < block->lines + block->len;
3362 ++line) {
3363 fz_text_span *span;
3364
3365 for (span = line->first_span; span; span = span->next) {
3366 int a, b;
3367
3368 seen |= span == page->fmark.span || span == page->lmark.span;
3369 a = span == page->fmark.span ? page->fmark.i : 0;
3370 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3371
3372 if (seen) {
3373 if (pipespan (f, span, a, b)) {
3374 goto close;
3375 }
3376 if (span == line->last_span) {
3377 if (putc ('\n', f) == EOF) {
3378 fprintf (stderr,
3379 "failed break line on sel pipe: %s\n",
3380 strerror (errno));
3381 goto close;
3382 }
3383 }
3384 if (span == page->lmark.span) {
3385 goto endloop;
3386 }
3387 }
3388 }
3389 }
3390 }
3391 endloop:
3392 if (clear) {
3393 page->lmark.span = NULL;
3394 page->fmark.span = NULL;
3395 }
3396
3397 close:
3398 if (f != stdout) {
3399 int ret = fclose (f);
3400 fd = -1;
3401 if (ret == -1) {
3402 if (errno != ECHILD) {
3403 fprintf (stderr, "failed to close sel pipe: %s\n",
3404 strerror (errno));
3405 }
3406 }
3407 }
3408 unlock:
3409 unlock ("ml_copysel");
3410
3411 done:
3412 if (fd >= 0) {
3413 if (close (fd)) {
3414 fprintf (stderr, "failed to close sel pipe: %s\n",
3415 strerror (errno));
3416 }
3417 }
3418 CAMLreturn (Val_unit);
3419 }
3420
3421 CAMLprim value ml_getpdimrect (value pagedimno_v)
3422 {
3423 CAMLparam1 (pagedimno_v);
3424 CAMLlocal1 (ret_v);
3425 int pagedimno = Int_val (pagedimno_v);
3426 fz_rect box;
3427
3428 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3429 if (trylock ("ml_getpdimrect")) {
3430 box = fz_empty_rect;
3431 }
3432 else {
3433 box = state.pagedims[pagedimno].mediabox;
3434 unlock ("ml_getpdimrect");
3435 }
3436
3437 Store_double_field (ret_v, 0, box.x0);
3438 Store_double_field (ret_v, 1, box.x1);
3439 Store_double_field (ret_v, 2, box.y0);
3440 Store_double_field (ret_v, 3, box.y1);
3441
3442 CAMLreturn (ret_v);
3443 }
3444
3445 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3446 value dw_v, value cols_v)
3447 {
3448 CAMLparam3 (winw_v, winh_v, dw_v);
3449 CAMLlocal1 (ret_v);
3450 int i;
3451 double zoom = -1.;
3452 double maxh = 0.0;
3453 struct pagedim *p;
3454 double winw = Int_val (winw_v);
3455 double winh = Int_val (winh_v);
3456 double dw = Int_val (dw_v);
3457 double cols = Int_val (cols_v);
3458 double pw = 1.0, ph = 1.0;
3459
3460 if (trylock ("ml_zoom_for_height")) {
3461 goto done;
3462 }
3463
3464 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3465 double w = p->pagebox.x1 / cols;
3466 double h = p->pagebox.y1;
3467 if (h > maxh) {
3468 maxh = h;
3469 ph = h;
3470 if (state.fitmodel != FitProportional) pw = w;
3471 }
3472 if ((state.fitmodel == FitProportional) && w > pw) pw = w;
3473 }
3474
3475 zoom = (((winh / ph) * pw) + dw) / winw;
3476 unlock ("ml_zoom_for_height");
3477 done:
3478 ret_v = caml_copy_double (zoom);
3479 CAMLreturn (ret_v);
3480 }
3481
3482 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3483 {
3484 CAMLparam4 (pt_v, x_v, y_v, string_v);
3485 CAMLlocal1 (ret_v);
3486 int pt = Int_val(pt_v);
3487 int x = Int_val (x_v);
3488 int y = Int_val (y_v);
3489 double w;
3490
3491 w = draw_string (state.face, pt, x, y, String_val (string_v));
3492 ret_v = caml_copy_double (w);
3493 CAMLreturn (ret_v);
3494 }
3495
3496 CAMLprim value ml_measure_string (value pt_v, value string_v)
3497 {
3498 CAMLparam2 (pt_v, string_v);
3499 CAMLlocal1 (ret_v);
3500 int pt = Int_val (pt_v);
3501 double w;
3502
3503 w = measure_string (state.face, pt, String_val (string_v));
3504 ret_v = caml_copy_double (w);
3505 CAMLreturn (ret_v);
3506 }
3507
3508 CAMLprim value ml_getpagebox (value opaque_v)
3509 {
3510 CAMLparam1 (opaque_v);
3511 CAMLlocal1 (ret_v);
3512 fz_rect rect;
3513 fz_irect bbox;
3514 fz_matrix ctm;
3515 fz_device *dev;
3516 char *s = String_val (opaque_v);
3517 struct page *page = parse_pointer ("ml_getpagebox", s);
3518
3519 ret_v = caml_alloc_tuple (4);
3520 dev = fz_new_bbox_device (state.ctx, &rect);
3521 dev->hints |= FZ_IGNORE_SHADE;
3522
3523 switch (page->type) {
3524 case DPDF:
3525 ctm = pagectm (page);
3526 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, &ctm, NULL);
3527 break;
3528
3529 case DXPS:
3530 ctm = pagectm (page);
3531 xps_run_page (state.u.xps, page->u.xpspage, dev, &ctm, NULL);
3532 break;
3533
3534 default:
3535 rect = fz_infinite_rect;
3536 break;
3537 }
3538
3539 fz_free_device (dev);
3540 fz_round_rect (&bbox, &rect);
3541 Field (ret_v, 0) = Val_int (bbox.x0);
3542 Field (ret_v, 1) = Val_int (bbox.y0);
3543 Field (ret_v, 2) = Val_int (bbox.x1);
3544 Field (ret_v, 3) = Val_int (bbox.y1);
3545
3546 CAMLreturn (ret_v);
3547 }
3548
3549 CAMLprim value ml_setaalevel (value level_v)
3550 {
3551 CAMLparam1 (level_v);
3552
3553 state.aalevel = Int_val (level_v);
3554 CAMLreturn (Val_unit);
3555 }
3556
3557 #undef pixel
3558 #include <X11/Xlib.h>
3559 #include <GL/glx.h>
3560
3561 static struct {
3562 Display *dpy;
3563 GLXContext ctx;
3564 GLXDrawable drawable;
3565 } glx;
3566
3567 #include "keysym2ucs.c"
3568
3569 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3570 {
3571 CAMLparam1 (keysym_v);
3572 CAMLlocal1 (str_v);
3573 KeySym keysym = Int_val (keysym_v);
3574 Rune rune;
3575 int len;
3576 char buf[5];
3577
3578 rune = keysym2ucs (keysym);
3579 len = fz_runetochar (buf, rune);
3580 buf[len] = 0;
3581 str_v = caml_copy_string (buf);
3582 CAMLreturn (str_v);
3583 }
3584
3585 CAMLprim value ml_glx (value win_v)
3586 {
3587 CAMLparam1 (win_v);
3588 XVisualInfo *visual;
3589 int screen, wid = Int_val (win_v);
3590 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3591
3592 glx.dpy = XOpenDisplay (NULL);
3593 if (!glx.dpy) {
3594 caml_failwith ("XOpenDisplay");
3595 }
3596
3597 screen = DefaultScreen (glx.dpy);
3598 visual = glXChooseVisual (glx.dpy, screen, attributes);
3599 if (!visual) {
3600 XCloseDisplay (glx.dpy);
3601 glx.dpy = NULL;
3602 caml_failwith ("glXChooseVisual");
3603 }
3604
3605 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3606 XFree (visual);
3607 if (!glx.ctx) {
3608 XCloseDisplay (glx.dpy);
3609 glx.dpy = NULL;
3610 caml_failwith ("glXCreateContext");
3611 }
3612
3613 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3614 glXDestroyContext (glx.dpy, glx.ctx);
3615 XCloseDisplay (glx.dpy);
3616 glx.dpy = NULL;
3617 glx.ctx = NULL;
3618 caml_failwith ("glXMakeCurrent");
3619 }
3620 glx.drawable = wid;
3621 CAMLreturn (Val_unit);
3622 }
3623
3624 CAMLprim value ml_swapb (value unit_v)
3625 {
3626 CAMLparam1 (unit_v);
3627 glXSwapBuffers (glx.dpy, glx.drawable);
3628 CAMLreturn (Val_unit);
3629 }
3630
3631 CAMLprim value ml_glxsync (value unit_v)
3632 {
3633 CAMLparam1 (unit_v);
3634 if (glx.dpy && glx.ctx) {
3635 glXWaitX ();
3636 glXWaitGL ();
3637 }
3638 CAMLreturn (Val_unit);
3639 }
3640
3641 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3642 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3643
3644 CAMLprim value ml_platform (value unit_v)
3645 {
3646 CAMLparam1 (unit_v);
3647 int platid = piunknown;
3648
3649 #if defined __linux__
3650 platid = pilinux;
3651 #elif defined __CYGWIN__
3652 platid = picygwin;
3653 #elif defined __DragonFly__
3654 platid = pidragonflybsd;
3655 #elif defined __FreeBSD__
3656 platid = pifreebsd;
3657 #elif defined __OpenBSD__
3658 platid = piopenbsd;
3659 #elif defined __NetBSD__
3660 platid = pinetbsd;
3661 #elif defined __sun__
3662 platid = pisun;
3663 #elif defined __APPLE__
3664 platid = piosx;
3665 #endif
3666 CAMLreturn (Val_int (platid));
3667 }
3668
3669 CAMLprim value ml_cloexec (value fd_v)
3670 {
3671 CAMLparam1 (fd_v);
3672 int fd = Int_val (fd_v);
3673
3674 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3675 uerror ("fcntl", Nothing);
3676 }
3677 CAMLreturn (Val_unit);
3678 }
3679
3680 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3681 {
3682 CAMLparam2 (w_v, h_v);
3683 CAMLlocal1 (ret_v);
3684 struct pbo *pbo;
3685 int w = Int_val (w_v);
3686 int h = Int_val (h_v);
3687 int cs = Int_val (cs_v);
3688
3689 if (state.pbo_usable) {
3690 pbo = calloc (sizeof (*pbo), 1);
3691 if (!pbo) {
3692 err (1, "calloc pbo");
3693 }
3694
3695 switch (cs) {
3696 case 0:
3697 case 1:
3698 pbo->size = w*h*4;
3699 break;
3700 case 2:
3701 pbo->size = w*h*2;
3702 break;
3703 default:
3704 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3705 }
3706
3707 state.glGenBuffersARB (1, &pbo->id);
3708 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3709 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3710 NULL, GL_STREAM_DRAW);
3711 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3712 GL_READ_WRITE);
3713 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3714 if (!pbo->ptr) {
3715 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3716 state.glDeleteBuffersARB (1, &pbo->id);
3717 free (pbo);
3718 ret_v = caml_copy_string ("0");
3719 }
3720 else {
3721 int res;
3722 char *s;
3723
3724 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3725 if (res < 0) {
3726 err (1, "snprintf %" FMT_ptr " failed", pbo);
3727 }
3728 s = malloc (res+1);
3729 if (!s) {
3730 err (1, "malloc %d bytes failed", res+1);
3731 }
3732 res = sprintf (s, "%" FMT_ptr, pbo);
3733 if (res < 0) {
3734 err (1, "sprintf %" FMT_ptr " failed", pbo);
3735 }
3736 ret_v = caml_copy_string (s);
3737 free (s);
3738 }
3739 }
3740 else {
3741 ret_v = caml_copy_string ("0");
3742 }
3743 CAMLreturn (ret_v);
3744 }
3745
3746 CAMLprim value ml_freepbo (value s_v)
3747 {
3748 CAMLparam1 (s_v);
3749 char *s = String_val (s_v);
3750 struct tile *tile = parse_pointer ("ml_freepbo", s);
3751
3752 if (tile->pbo) {
3753 state.glDeleteBuffersARB (1, &tile->pbo->id);
3754 tile->pbo->id = -1;
3755 tile->pbo->ptr = NULL;
3756 tile->pbo->size = -1;
3757 }
3758 CAMLreturn (Val_unit);
3759 }
3760
3761 CAMLprim value ml_unmappbo (value s_v)
3762 {
3763 CAMLparam1 (s_v);
3764 char *s = String_val (s_v);
3765 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3766
3767 if (tile->pbo) {
3768 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3769 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3770 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3771 }
3772 tile->pbo->ptr = NULL;
3773 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3774 }
3775 CAMLreturn (Val_unit);
3776 }
3777
3778 static void setuppbo (void)
3779 {
3780 #define GGPA(n) *(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n)
3781 GGPA (glBindBufferARB);
3782 if (state.glBindBufferARB) {
3783 GGPA (glUnmapBufferARB);
3784 if (state.glUnmapBufferARB) {
3785 GGPA (glMapBufferARB);
3786 if (state.glMapBufferARB) {
3787 GGPA (glBufferDataARB);
3788 if (state.glBufferDataARB) {
3789 GGPA (glGenBuffersARB);
3790 if (state.glGenBuffersARB) {
3791 GGPA (glDeleteBuffersARB);
3792 if (state.glDeleteBuffersARB) {
3793 state.pbo_usable = 1;
3794 }
3795 }
3796 }
3797 }
3798 }
3799 }
3800 #undef GGPA
3801 }
3802
3803 CAMLprim value ml_pbo_usable (value unit_v)
3804 {
3805 CAMLparam1 (unit_v);
3806 CAMLreturn (Val_bool (state.pbo_usable));
3807 }
3808
3809 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
3810 {
3811 CAMLparam3 (ptr_v, x_v, y_v);
3812 CAMLlocal2 (ret_v, tup_v);
3813 struct page *page;
3814 char *s = String_val (ptr_v);
3815 int x = Int_val (x_v), y = Int_val (y_v);
3816 struct pagedim *pdim;
3817 fz_point p;
3818 fz_matrix ctm;
3819
3820 page = parse_pointer ("ml_unproject", s);
3821 pdim = &state.pagedims[page->pdimno];
3822
3823 ret_v = Val_int (0);
3824 if (trylock ("ml_unproject")) {
3825 goto done;
3826 }
3827
3828 switch (page->type) {
3829 case DPDF:
3830 trimctm (page->u.pdfpage, page->pdimno);
3831 break;
3832
3833 default:
3834 break;
3835 }
3836 p.x = x;
3837 p.y = y;
3838
3839 fz_concat (&ctm, &pdim->tctm, &pdim->ctm);
3840 fz_invert_matrix (&ctm, &ctm);
3841 fz_transform_point (&p, &ctm);
3842
3843 tup_v = caml_alloc_tuple (2);
3844 ret_v = caml_alloc_small (1, 1);
3845 Field (tup_v, 0) = Val_int (p.x);
3846 Field (tup_v, 1) = Val_int (p.y);
3847 Field (ret_v, 0) = tup_v;
3848
3849 unlock ("ml_unproject");
3850 done:
3851 CAMLreturn (ret_v);
3852 }
3853
3854 static void makestippletex (void)
3855 {
3856 const char pixels[] = "\xff\xff\0\0";
3857 glGenTextures (1, &state.stid);
3858 glBindTexture (GL_TEXTURE_1D, state.stid);
3859 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
3860 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
3861 glTexImage1D (
3862 GL_TEXTURE_1D,
3863 0,
3864 GL_ALPHA,
3865 4,
3866 0,
3867 GL_ALPHA,
3868 GL_UNSIGNED_BYTE,
3869 pixels
3870 );
3871 }
3872
3873 CAMLprim value ml_init (value pipe_v, value params_v)
3874 {
3875 CAMLparam2 (pipe_v, params_v);
3876 CAMLlocal2 (trim_v, fuzz_v);
3877 int ret;
3878 int texcount;
3879 char *fontpath;
3880 int colorspace;
3881 int mustoresize;
3882 int haspboext;
3883 struct sigaction sa;
3884
3885 state.cr = Int_val (Field (pipe_v, 0));
3886 state.cw = Int_val (Field (pipe_v, 1));
3887 state.rotate = Int_val (Field (params_v, 0));
3888 state.fitmodel = Int_val (Field (params_v, 1));
3889 trim_v = Field (params_v, 2);
3890 texcount = Int_val (Field (params_v, 3));
3891 state.sliceheight = Int_val (Field (params_v, 4));
3892 mustoresize = Int_val (Field (params_v, 5));
3893 colorspace = Int_val (Field (params_v, 6));
3894 fontpath = String_val (Field (params_v, 7));
3895 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3896 if (!state.trimcachepath) {
3897 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
3898 strerror (errno));
3899 }
3900 haspboext = Bool_val (Field (params_v, 9));
3901
3902 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3903
3904 state.trimmargins = Bool_val (Field (trim_v, 0));
3905 fuzz_v = Field (trim_v, 1);
3906 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3907 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3908 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3909 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3910
3911 set_tex_params (colorspace);
3912
3913 if (*fontpath) {
3914 state.face = load_font (fontpath);
3915 }
3916 else {
3917 unsigned int len;
3918 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3919
3920 state.face = load_builtin_font (base, len);
3921 }
3922 if (!state.face) _exit (1);
3923
3924 realloctexts (texcount);
3925
3926 if (haspboext) {
3927 setuppbo ();
3928 }
3929
3930 makestippletex ();
3931 #ifdef __CYGWIN__
3932 sa.sa_handler = SIG_IGN;
3933 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
3934 #else
3935 sa.sa_handler = SIG_DFL;
3936 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
3937 #endif
3938 if (sigemptyset (&sa.sa_mask)) {
3939 err (1, "sigemptyset");
3940 }
3941 if (sigaction (SIGCHLD, &sa, NULL)) {
3942 err (1, "sigaction");
3943 }
3944
3945 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
3946 if (ret) {
3947 errx (1, "pthread_create: %s", strerror (ret));
3948 }
3949
3950 CAMLreturn (Val_unit);
3951 }
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