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Add anki deck to documentation
[llpp.git] / link.c
blob09ca3dd11f9e7628e63f945e2da1ca1daa7fd0a5
1 /* lots of code c&p-ed directly from mupdf */
2 #define FIXME 0
3
4 #ifdef __clang__
5 #pragma GCC diagnostic error "-Weverything"
6 #pragma GCC diagnostic ignored "-Wpadded"
7 #pragma GCC diagnostic ignored "-Wsign-conversion"
8 #pragma GCC diagnostic ignored "-Wdocumentation-unknown-command"
9 #pragma GCC diagnostic ignored "-Wdocumentation"
10 #pragma GCC diagnostic ignored "-Wdouble-promotion"
11 #endif
12
13 extern char **environ;
14
15 #include <errno.h>
16 #include <stdio.h>
17 #include <ctype.h>
18 #include <string.h>
19 #include <stdlib.h>
20 #include <signal.h>
21
22 #include <math.h>
23 #include <wchar.h>
24 #include <locale.h>
25 #include <langinfo.h>
26
27 #include <unistd.h>
28 #include <pthread.h>
29 #include <sys/uio.h>
30 #include <sys/time.h>
31 #include <sys/stat.h>
32 #include <fcntl.h>
33 #include <sys/types.h>
34 #include <sys/ioctl.h>
35 #include <sys/utsname.h>
36
37 #include <spawn.h>
38
39 #include <regex.h>
40 #include <stdarg.h>
41 #include <limits.h>
42 #include <inttypes.h>
43
44 #ifdef CIDER
45 #include <OpenGL/gl.h>
46 #else
47 #include <GL/gl.h>
48 #endif
49
50 #pragma GCC diagnostic push
51 #ifdef __clang__
52 #pragma GCC diagnostic ignored "-Wreserved-id-macro"
53 #endif
54 #pragma GCC diagnostic ignored "-Wpedantic"
55 #define CAML_NAME_SPACE
56 #include <caml/fail.h>
57 #include <caml/alloc.h>
58 #include <caml/memory.h>
59 #include <caml/unixsupport.h>
60
61 #pragma GCC diagnostic push
62 #pragma GCC diagnostic ignored "-Wfloat-equal"
63 #include <mupdf/fitz.h>
64 #include <mupdf/pdf.h>
65 #pragma GCC diagnostic pop
66
67 #include <ft2build.h>
68 #include FT_FREETYPE_H
69 #pragma GCC diagnostic pop
70
71 #include "cutils.h"
72
73 #ifdef USE_NPOT
74 #define TEXT_TYPE GL_TEXTURE_2D
75 #else
76 #define TEXT_TYPE GL_TEXTURE_RECTANGLE_ARB
77 #endif
78
79 #if 0
80 #define lprintf printf
81 #else
82 #define lprintf(...)
83 #endif
84
85 #define ARSERT(cond) for (;;) { \
86 if (!(cond)) { \
87 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
88 } \
89 break; \
90 }
91
92 struct slice {
93 int h;
94 int texindex;
95 };
96
97 struct tile {
98 int w, h;
99 int slicecount;
100 int sliceheight;
101 struct bo *pbo;
102 fz_pixmap *pixmap;
103 struct slice slices[1];
104 };
105
106 struct pagedim {
107 int pageno;
108 int rotate;
109 int left;
110 int tctmready;
111 fz_irect bounds;
112 fz_rect pagebox;
113 fz_rect mediabox;
114 fz_matrix ctm, zoomctm, tctm;
115 };
116
117 struct slink {
118 enum { SLINK, SANNOT } tag;
119 fz_irect bbox;
120 union {
121 fz_link *link;
122 pdf_annot *annot;
123 } u;
124 };
125
126 struct annot {
127 fz_irect bbox;
128 pdf_annot *annot;
129 };
130
131 struct page {
132 int tgen;
133 int sgen;
134 int agen;
135 int pageno;
136 int pdimno;
137 fz_stext_page *text;
138 fz_page *fzpage;
139 fz_display_list *dlist;
140 fz_link *links;
141 int slinkcount;
142 struct slink *slinks;
143 int annotcount;
144 struct annot *annots;
145 fz_stext_char *fmark, *lmark;
146 };
147
148 enum { FitWidth, FitProportional, FitPage };
149
150 static struct {
151 int sliceheight;
152 struct pagedim *pagedims;
153 int pagecount;
154 int pagedimcount;
155 fz_document *doc;
156 fz_context *ctx;
157 int w, h;
158
159 int texindex;
160 int texcount;
161 GLuint *texids;
162
163 GLenum texiform;
164 GLenum texform;
165 GLenum texty;
166
167 fz_colorspace *colorspace;
168
169 struct {
170 int w, h;
171 struct slice *slice;
172 } *texowners;
173
174 int rotate;
175 int fitmodel;
176 int trimmargins;
177 int needoutline;
178 int gen;
179 int aalevel;
180
181 int trimanew;
182 fz_irect trimfuzz;
183 fz_pixmap *pig;
184
185 pthread_t thread;
186 int csock;
187 FT_Face face;
188
189 char *trimcachepath;
190 int dirty;
191
192 GLuint stid;
193
194 int bo_usable;
195 GLuint boid;
196
197 void (*glBindBufferARB) (GLenum, GLuint);
198 GLboolean (*glUnmapBufferARB) (GLenum);
199 void *(*glMapBufferARB) (GLenum, GLenum);
200 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
201 void (*glGenBuffersARB) (GLsizei, GLuint *);
202 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
203
204 GLfloat texcoords[8];
205 GLfloat vertices[16];
206
207 #ifdef CACHE_PAGEREFS
208 struct {
209 int idx;
210 int count;
211 pdf_obj **objs;
212 pdf_document *pdf;
213 } pdflut;
214 #endif
215 int utf8cs;
216 } state;
217
218 struct bo {
219 GLuint id;
220 void *ptr;
221 size_t size;
222 };
223
224 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
225
226 static void lock (const char *cap)
227 {
228 int ret = pthread_mutex_lock (&mutex);
229 if (ret) {
230 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
231 }
232 }
233
234 static void unlock (const char *cap)
235 {
236 int ret = pthread_mutex_unlock (&mutex);
237 if (ret) {
238 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
239 }
240 }
241
242 static int trylock (const char *cap)
243 {
244 int ret = pthread_mutex_trylock (&mutex);
245 if (ret && ret != EBUSY) {
246 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
247 }
248 return ret == EBUSY;
249 }
250
251 static int hasdata (void)
252 {
253 int ret, avail;
254 ret = ioctl (state.csock, FIONREAD, &avail);
255 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
256 return avail > 0;
257 }
258
259 value ml_hasdata (value fd_v);
260 value ml_hasdata (value fd_v)
261 {
262 CAMLparam1 (fd_v);
263 int ret, avail;
264
265 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
266 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
267 CAMLreturn (Val_bool (avail > 0));
268 }
269
270 static void readdata (int fd, void *p, int size)
271 {
272 ssize_t n;
273
274 again:
275 n = read (fd, p, size);
276 if (n - size) {
277 if (n < 0 && errno == EINTR) goto again;
278 if (!n) errx (1, "EOF while reading");
279 errx (1, "read (fd %d, req %d, ret %zd)", fd, size, n);
280 }
281 }
282
283 static void writedata (int fd, char *p, int size)
284 {
285 ssize_t n;
286 uint32_t size4 = size;
287 struct iovec iov[2] = {
288 { .iov_base = &size4, .iov_len = 4 },
289 { .iov_base = p, .iov_len = size }
290 };
291
292 again:
293 n = writev (fd, iov, 2);
294 if (n < 0 && errno == EINTR) goto again;
295 if (n - size - 4) {
296 if (!n) errx (1, "EOF while writing data");
297 err (1, "writev (fd %d, req %d, ret %zd)", fd, size + 4, n);
298 }
299 }
300
301 static int readlen (int fd)
302 {
303 uint32_t u;
304 readdata (fd, &u, 4);
305 return u;
306 }
307
308 void ml_wcmd (value fd_v, value bytes_v, value len_v);
309 void ml_wcmd (value fd_v, value bytes_v, value len_v)
310 {
311 CAMLparam3 (fd_v, bytes_v, len_v);
312 writedata (Int_val (fd_v), &Byte (bytes_v, 0), Int_val (len_v));
313 CAMLreturn0;
314 }
315
316 value ml_rcmd (value fd_v);
317 value ml_rcmd (value fd_v)
318 {
319 CAMLparam1 (fd_v);
320 CAMLlocal1 (strdata_v);
321 int fd = Int_val (fd_v);
322 int len = readlen (fd);
323 strdata_v = caml_alloc_string (len);
324 readdata (fd, String_val (strdata_v), len);
325 CAMLreturn (strdata_v);
326 }
327
328 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
329 {
330 char fbuf[64];
331 int size = sizeof (fbuf), len;
332 va_list ap;
333 char *buf = fbuf;
334
335 for (;;) {
336 va_start (ap, fmt);
337 len = vsnprintf (buf, size, fmt, ap);
338 va_end (ap);
339
340 if (len > -1) {
341 if (len < size - 4) {
342 writedata (state.csock, buf, len);
343 break;
344 }
345 else size = len + 5;
346 }
347 else {
348 err (1, "vsnprintf for `%s' failed", fmt);
349 }
350 buf = realloc (buf == fbuf ? NULL : buf, size);
351 if (!buf) err (1, "realloc for temp buf (%d bytes) failed", size);
352 }
353 if (buf != fbuf) free (buf);
354 }
355
356 static void closedoc (void)
357 {
358 #ifdef CACHE_PAGEREFS
359 if (state.pdflut.objs) {
360 for (int i = 0; i < state.pdflut.count; ++i) {
361 pdf_drop_obj (state.ctx, state.pdflut.objs[i]);
362 }
363 free (state.pdflut.objs);
364 state.pdflut.objs = NULL;
365 state.pdflut.idx = 0;
366 }
367 #endif
368 if (state.doc) {
369 fz_drop_document (state.ctx, state.doc);
370 state.doc = NULL;
371 }
372 }
373
374 static int openxref (char *filename, char *password, int layouth)
375 {
376 for (int i = 0; i < state.texcount; ++i) {
377 state.texowners[i].w = -1;
378 state.texowners[i].slice = NULL;
379 }
380
381 closedoc ();
382
383 state.dirty = 0;
384 if (state.pagedims) {
385 free (state.pagedims);
386 state.pagedims = NULL;
387 }
388 state.pagedimcount = 0;
389
390 fz_set_aa_level (state.ctx, state.aalevel);
391 state.doc = fz_open_document (state.ctx, filename);
392 if (fz_needs_password (state.ctx, state.doc)) {
393 if (password && !*password) {
394 printd ("pass");
395 return 0;
396 }
397 else {
398 int ok = fz_authenticate_password (state.ctx, state.doc, password);
399 if (!ok) {
400 printd ("pass fail");
401 return 0;
402 }
403 }
404 }
405 if (layouth >= 0)
406 fz_layout_document (state.ctx, state.doc, 460, layouth, 12);
407 state.pagecount = fz_count_pages (state.ctx, state.doc);
408 return 1;
409 }
410
411 static void docinfo (void)
412 {
413 struct { char *tag; char *name; } metatbl[] = {
414 { FZ_META_INFO_TITLE, "Title" },
415 { FZ_META_INFO_AUTHOR, "Author" },
416 { FZ_META_FORMAT, "Format" },
417 { FZ_META_ENCRYPTION, "Encryption" },
418 { "info:Creator", "Creator" },
419 { "info:Producer", "Producer" },
420 { "info:CreationDate", "Creation date" },
421 };
422 int len = 0;
423 char *buf = NULL;
424
425 for (size_t i = 0; i < sizeof (metatbl) / sizeof (metatbl[1]); ++i) {
426 int need;
427 again:
428 need = fz_lookup_metadata (state.ctx, state.doc,
429 metatbl[i].tag, buf, len);
430 if (need > 0) {
431 if (need <= len) {
432 printd ("info %s\t%s", metatbl[i].name, buf);
433 }
434 else {
435 buf = realloc (buf, need + 1);
436 if (!buf) err (1, "docinfo realloc %d", need + 1);
437 len = need + 1;
438 goto again;
439 }
440 }
441 }
442 free (buf);
443
444 printd ("infoend");
445 }
446
447 static void unlinktile (struct tile *tile)
448 {
449 for (int i = 0; i < tile->slicecount; ++i) {
450 struct slice *s = &tile->slices[i];
451
452 if (s->texindex != -1) {
453 if (state.texowners[s->texindex].slice == s) {
454 state.texowners[s->texindex].slice = NULL;
455 }
456 }
457 }
458 }
459
460 static void freepage (struct page *page)
461 {
462 if (!page) return;
463 if (page->text) {
464 fz_drop_stext_page (state.ctx, page->text);
465 }
466 if (page->slinks) {
467 free (page->slinks);
468 }
469 fz_drop_display_list (state.ctx, page->dlist);
470 fz_drop_page (state.ctx, page->fzpage);
471 free (page);
472 }
473
474 static void freetile (struct tile *tile)
475 {
476 unlinktile (tile);
477 if (!tile->pbo) {
478 #if 0
479 fz_drop_pixmap (state.ctx, tile->pixmap);
480 #else /* piggyback */
481 if (state.pig) {
482 fz_drop_pixmap (state.ctx, state.pig);
483 }
484 state.pig = tile->pixmap;
485 #endif
486 }
487 else {
488 free (tile->pbo);
489 fz_drop_pixmap (state.ctx, tile->pixmap);
490 }
491 free (tile);
492 }
493
494 static void trimctm (pdf_page *page, int pindex)
495 {
496 struct pagedim *pdim = &state.pagedims[pindex];
497
498 if (!page) return;
499 if (!pdim->tctmready) {
500 fz_rect realbox, mediabox;
501 fz_matrix page_ctm, ctm;
502
503 ctm = fz_concat (fz_rotate (-pdim->rotate), fz_scale (1, -1));
504 realbox = fz_transform_rect (pdim->mediabox, ctm);
505 pdf_page_transform (state.ctx, page, &mediabox, &page_ctm);
506 pdim->tctm = fz_concat (
507 fz_invert_matrix (page_ctm),
508 fz_concat (ctm, fz_translate (-realbox.x0, -realbox.y0)));
509 pdim->tctmready = 1;
510 }
511 }
512
513 static fz_matrix pagectm1 (fz_page *fzpage, struct pagedim *pdim)
514 {
515 fz_matrix ctm;
516 ptrdiff_t pdimno = pdim - state.pagedims;
517
518 ARSERT (pdim - state.pagedims < INT_MAX);
519 if (pdf_specifics (state.ctx, state.doc)) {
520 trimctm (pdf_page_from_fz_page (state.ctx, fzpage), (int) pdimno);
521 ctm = fz_concat (pdim->tctm, pdim->ctm);
522 }
523 else {
524 ctm = fz_concat (fz_translate (-pdim->mediabox.x0, -pdim->mediabox.y0),
525 pdim->ctm);
526 }
527 return ctm;
528 }
529
530 static fz_matrix pagectm (struct page *page)
531 {
532 return pagectm1 (page->fzpage, &state.pagedims[page->pdimno]);
533 }
534
535 static void *loadpage (int pageno, int pindex)
536 {
537 fz_device *dev;
538 struct page *page;
539
540 page = calloc (sizeof (struct page), 1);
541 if (!page) {
542 err (1, "calloc page %d", pageno);
543 }
544
545 page->dlist = fz_new_display_list (state.ctx, fz_infinite_rect);
546 dev = fz_new_list_device (state.ctx, page->dlist);
547 fz_try (state.ctx) {
548 page->fzpage = fz_load_page (state.ctx, state.doc, pageno);
549 fz_run_page (state.ctx, page->fzpage, dev, fz_identity, NULL);
550 }
551 fz_catch (state.ctx) {
552 page->fzpage = NULL;
553 }
554 fz_close_device (state.ctx, dev);
555 fz_drop_device (state.ctx, dev);
556
557 page->pdimno = pindex;
558 page->pageno = pageno;
559 page->sgen = state.gen;
560 page->agen = state.gen;
561 page->tgen = state.gen;
562 return page;
563 }
564
565 static struct tile *alloctile (int h)
566 {
567 int slicecount;
568 size_t tilesize;
569 struct tile *tile;
570
571 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
572 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
573 tile = calloc (tilesize, 1);
574 if (!tile) {
575 err (1, "cannot allocate tile (%zu bytes)", tilesize);
576 }
577 for (int i = 0; i < slicecount; ++i) {
578 int sh = fz_mini (h, state.sliceheight);
579 tile->slices[i].h = sh;
580 tile->slices[i].texindex = -1;
581 h -= sh;
582 }
583 tile->slicecount = slicecount;
584 tile->sliceheight = state.sliceheight;
585 return tile;
586 }
587
588 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
589 struct bo *pbo)
590 {
591 fz_irect bbox;
592 fz_matrix ctm;
593 fz_device *dev;
594 struct tile *tile;
595 struct pagedim *pdim;
596
597 tile = alloctile (h);
598 pdim = &state.pagedims[page->pdimno];
599
600 bbox = pdim->bounds;
601 bbox.x0 += x;
602 bbox.y0 += y;
603 bbox.x1 = bbox.x0 + w;
604 bbox.y1 = bbox.y0 + h;
605
606 if (state.pig) {
607 if (state.pig->w == w
608 && state.pig->h == h
609 && state.pig->colorspace == state.colorspace) {
610 tile->pixmap = state.pig;
611 tile->pixmap->x = bbox.x0;
612 tile->pixmap->y = bbox.y0;
613 }
614 else {
615 fz_drop_pixmap (state.ctx, state.pig);
616 }
617 state.pig = NULL;
618 }
619 if (!tile->pixmap) {
620 if (pbo) {
621 tile->pixmap =
622 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
623 bbox, NULL, 1, pbo->ptr);
624 tile->pbo = pbo;
625 }
626 else {
627 tile->pixmap =
628 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, bbox,
629 NULL, 1);
630 }
631 }
632
633 tile->w = w;
634 tile->h = h;
635 fz_clear_pixmap_with_value (state.ctx, tile->pixmap, 0xff);
636
637 dev = fz_new_draw_device (state.ctx, fz_identity, tile->pixmap);
638 ctm = pagectm (page);
639 fz_run_display_list (state.ctx, page->dlist, dev, ctm,
640 fz_rect_from_irect (bbox), NULL);
641 fz_close_device (state.ctx, dev);
642 fz_drop_device (state.ctx, dev);
643
644 return tile;
645 }
646
647 #ifdef CACHE_PAGEREFS
648 /* modified mupdf/source/pdf/pdf-page.c:pdf_lookup_page_loc_imp
649 thanks to Robin Watts */
650 static void
651 pdf_collect_pages(pdf_document *doc, pdf_obj *node)
652 {
653 fz_context *ctx = state.ctx; /* doc->ctx; */
654 pdf_obj *kids;
655 int len;
656
657 if (state.pdflut.idx == state.pagecount) return;
658
659 kids = pdf_dict_gets (ctx, node, "Kids");
660 len = pdf_array_len (ctx, kids);
661
662 if (len == 0)
663 fz_throw (ctx, FZ_ERROR_GENERIC, "malformed pages tree");
664
665 if (pdf_mark_obj (ctx, node))
666 fz_throw (ctx, FZ_ERROR_GENERIC, "cycle in page tree");
667 for (int i = 0; i < len; i++) {
668 pdf_obj *kid = pdf_array_get (ctx, kids, i);
669 const char *type = pdf_to_name (ctx, pdf_dict_gets (ctx, kid, "Type"));
670 if (*type
671 ? !strcmp (type, "Pages")
672 : pdf_dict_gets (ctx, kid, "Kids")
673 && !pdf_dict_gets (ctx, kid, "MediaBox")) {
674 pdf_collect_pages (doc, kid);
675 }
676 else {
677 if (*type
678 ? strcmp (type, "Page") != 0
679 : !pdf_dict_gets (ctx, kid, "MediaBox"))
680 fz_warn (ctx, "non-page object in page tree (%s)", type);
681 state.pdflut.objs[state.pdflut.idx++] = pdf_keep_obj (ctx, kid);
682 }
683 }
684 pdf_unmark_obj (ctx, node);
685 }
686
687 static void
688 pdf_load_page_objs (pdf_document *doc)
689 {
690 pdf_obj *root = pdf_dict_gets (state.ctx,
691 pdf_trailer (state.ctx, doc), "Root");
692 pdf_obj *node = pdf_dict_gets (state.ctx, root, "Pages");
693
694 if (!node)
695 fz_throw (state.ctx, FZ_ERROR_GENERIC, "cannot find page tree");
696
697 state.pdflut.idx = 0;
698 pdf_collect_pages (doc, node);
699 }
700 #endif
701
702 static void initpdims (void)
703 {
704 double start, end;
705 FILE *trimf = NULL;
706 fz_rect rootmediabox = fz_empty_rect;
707 int pageno, trim, show;
708 int trimw = 0, cxcount;
709 fz_context *ctx = state.ctx;
710 pdf_document *pdf = pdf_specifics (ctx, state.doc);
711
712 fz_var (trimw);
713 fz_var (trimf);
714 fz_var (cxcount);
715 start = now ();
716
717 if (state.trimmargins && state.trimcachepath) {
718 trimf = fopen (state.trimcachepath, "rb");
719 if (!trimf) {
720 trimf = fopen (state.trimcachepath, "wb");
721 trimw = 1;
722 }
723 }
724
725 cxcount = state.pagecount;
726 if (pdf) {
727 pdf_obj *obj;
728 obj = pdf_dict_getp (ctx, pdf_trailer (ctx, pdf),
729 "Root/Pages/MediaBox");
730 rootmediabox = pdf_to_rect (ctx, obj);
731 }
732
733 #ifdef CACHE_PAGEREFS
734 if (pdf && (!state.pdflut.objs || state.pdflut.pdf != pdf)) {
735 state.pdflut.objs = calloc (sizeof (*state.pdflut.objs), cxcount);
736 if (!state.pdflut.objs) {
737 err (1, "malloc pageobjs %zu %d %zu failed",
738 sizeof (*state.pdflut.objs), cxcount,
739 sizeof (*state.pdflut.objs) * cxcount);
740 }
741 state.pdflut.count = cxcount;
742 pdf_load_page_objs (pdf);
743 state.pdflut.pdf = pdf;
744 }
745 #endif
746
747 for (pageno = 0; pageno < cxcount; ++pageno) {
748 int rotate = 0;
749 struct pagedim *p;
750 fz_rect mediabox = fz_empty_rect;
751
752 fz_var (rotate);
753 if (pdf) {
754 pdf_obj *pageref, *pageobj;
755
756 #ifdef CACHE_PAGEREFS
757 pageref = state.pdflut.objs[pageno];
758 #else
759 pageref = pdf_lookup_page_obj (ctx, pdf, pageno);
760 #endif
761 pageobj = pdf_resolve_indirect (ctx, pageref);
762 rotate = pdf_to_int (ctx, pdf_dict_gets (ctx, pageobj, "Rotate"));
763
764 if (state.trimmargins) {
765 pdf_obj *obj;
766 pdf_page *page;
767
768 fz_try (ctx) {
769 page = pdf_load_page (ctx, pdf, pageno);
770 obj = pdf_dict_gets (ctx, pageobj, "llpp.TrimBox");
771 trim = state.trimanew || !obj;
772 if (trim) {
773 fz_rect rect;
774 fz_device *dev;
775 fz_matrix ctm, page_ctm;
776
777 dev = fz_new_bbox_device (ctx, &rect);
778 pdf_page_transform (ctx, page, &mediabox, &page_ctm);
779 ctm = fz_invert_matrix (page_ctm);
780 pdf_run_page (ctx, page, dev, fz_identity, NULL);
781 fz_close_device (ctx, dev);
782 fz_drop_device (ctx, dev);
783
784 rect.x0 += state.trimfuzz.x0;
785 rect.x1 += state.trimfuzz.x1;
786 rect.y0 += state.trimfuzz.y0;
787 rect.y1 += state.trimfuzz.y1;
788 rect = fz_transform_rect (rect, ctm);
789 rect = fz_intersect_rect (rect, mediabox);
790
791 if (!fz_is_empty_rect (rect)) {
792 mediabox = rect;
793 }
794
795 obj = pdf_new_array (ctx, pdf, 4);
796 pdf_array_push (ctx, obj,
797 pdf_new_real (ctx, mediabox.x0));
798 pdf_array_push (ctx, obj,
799 pdf_new_real (ctx, mediabox.y0));
800 pdf_array_push (ctx, obj,
801 pdf_new_real (ctx, mediabox.x1));
802 pdf_array_push (ctx, obj,
803 pdf_new_real (ctx, mediabox.y1));
804 pdf_dict_puts (ctx, pageobj, "llpp.TrimBox", obj);
805 }
806 else {
807 mediabox.x0 = pdf_to_real (ctx,
808 pdf_array_get (ctx, obj, 0));
809 mediabox.y0 = pdf_to_real (ctx,
810 pdf_array_get (ctx, obj, 1));
811 mediabox.x1 = pdf_to_real (ctx,
812 pdf_array_get (ctx, obj, 2));
813 mediabox.y1 = pdf_to_real (ctx,
814 pdf_array_get (ctx, obj, 3));
815 }
816
817 fz_drop_page (ctx, &page->super);
818 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
819 if (show) {
820 printd ("progress %f Trimming %d",
821 (double) (pageno + 1) / state.pagecount,
822 pageno + 1);
823 }
824 }
825 fz_catch (ctx) {
826 printd ("emsg failed to load page %d", pageno);
827 }
828 }
829 else {
830 int empty = 0;
831 fz_rect cropbox;
832
833 mediabox =
834 pdf_to_rect (ctx, pdf_dict_gets (ctx, pageobj, "MediaBox"));
835 if (fz_is_empty_rect (mediabox)) {
836 mediabox.x0 = 0;
837 mediabox.y0 = 0;
838 mediabox.x1 = 612;
839 mediabox.y1 = 792;
840 empty = 1;
841 }
842
843 cropbox =
844 pdf_to_rect (ctx, pdf_dict_gets (ctx, pageobj, "CropBox"));
845 if (!fz_is_empty_rect (cropbox)) {
846 if (empty) {
847 mediabox = cropbox;
848 }
849 else {
850 mediabox = fz_intersect_rect (mediabox, cropbox);
851 }
852 }
853 else {
854 if (empty) {
855 if (fz_is_empty_rect (rootmediabox)) {
856 printd ("emsg cannot find page size for page %d",
857 pageno);
858 }
859 else {
860 mediabox = rootmediabox;
861 }
862 }
863 }
864 }
865 }
866 else {
867 if (state.trimmargins && trimw) {
868 fz_page *page;
869
870 fz_try (ctx) {
871 page = fz_load_page (ctx, state.doc, pageno);
872 mediabox = fz_bound_page (ctx, page);
873 if (state.trimmargins) {
874 fz_rect rect;
875 fz_device *dev;
876
877 dev = fz_new_bbox_device (ctx, &rect);
878 fz_run_page (ctx, page, dev, fz_identity, NULL);
879 fz_close_device (ctx, dev);
880 fz_drop_device (ctx, dev);
881
882 rect.x0 += state.trimfuzz.x0;
883 rect.x1 += state.trimfuzz.x1;
884 rect.y0 += state.trimfuzz.y0;
885 rect.y1 += state.trimfuzz.y1;
886 rect = fz_intersect_rect (rect, mediabox);
887
888 if (!fz_is_empty_rect (rect)) {
889 mediabox = rect;
890 }
891 }
892 fz_drop_page (ctx, page);
893 }
894 fz_catch (ctx) {
895 }
896 if (trimf) {
897 size_t n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
898 if (n - 1) {
899 err (1, "fwrite trim mediabox");
900 }
901 }
902 }
903 else {
904 if (trimf) {
905 size_t n = fread (&mediabox, sizeof (mediabox), 1, trimf);
906 if (n - 1) {
907 err (1, "fread trim mediabox %d", pageno);
908 }
909 }
910 else {
911 fz_page *page;
912 fz_try (ctx) {
913 page = fz_load_page (ctx, state.doc, pageno);
914 mediabox = fz_bound_page (ctx, page);
915 fz_drop_page (ctx, page);
916
917 show = !state.trimmargins && pageno % 20 == 0;
918 if (show) {
919 printd ("progress %f Gathering dimensions %d",
920 (double) (pageno) / state.pagecount,
921 pageno);
922 }
923 }
924 fz_catch (ctx) {
925 printd ("emsg failed to load page %d", pageno);
926 }
927 }
928 }
929 }
930
931 if (state.pagedimcount == 0
932 || ((void) (p = &state.pagedims[state.pagedimcount-1])
933 , p->rotate != rotate)
934 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
935 size_t size;
936
937 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
938 state.pagedims = realloc (state.pagedims, size);
939 if (!state.pagedims) {
940 err (1, "realloc pagedims to %zu (%d elems)",
941 size, state.pagedimcount + 1);
942 }
943
944 p = &state.pagedims[state.pagedimcount++];
945 p->rotate = rotate;
946 p->mediabox = mediabox;
947 p->pageno = pageno;
948 }
949 }
950 end = now ();
951 printd ("progress 1 %s %d pages in %f seconds",
952 state.trimmargins ? "Trimmed" : "Processed",
953 state.pagecount, end - start);
954 state.trimanew = 0;
955 if (trimf) {
956 if (fclose (trimf)) {
957 err (1, "fclose");
958 }
959 }
960 }
961
962 static void layout (void)
963 {
964 int pindex;
965 fz_rect box;
966 fz_matrix ctm;
967 struct pagedim *p = NULL;
968 float zw, w, maxw = 0.0, zoom = 1.0;
969
970 if (state.pagedimcount == 0) return;
971
972 switch (state.fitmodel) {
973 case FitProportional:
974 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
975 float x0, x1;
976
977 p = &state.pagedims[pindex];
978 box = fz_transform_rect (p->mediabox,
979 fz_rotate (p->rotate + state.rotate));
980
981 x0 = fz_min (box.x0, box.x1);
982 x1 = fz_max (box.x0, box.x1);
983
984 w = x1 - x0;
985 maxw = fz_max (w, maxw);
986 zoom = state.w / maxw;
987 }
988 break;
989
990 case FitPage:
991 maxw = state.w;
992 break;
993
994 case FitWidth:
995 break;
996
997 default:
998 ARSERT (0 && state.fitmodel);
999 }
1000
1001 for (pindex = 0; pindex < state.pagedimcount; ++pindex) {
1002 p = &state.pagedims[pindex];
1003 ctm = fz_rotate (state.rotate);
1004 box = fz_transform_rect (p->mediabox,
1005 fz_rotate (p->rotate + state.rotate));
1006 w = box.x1 - box.x0;
1007 switch (state.fitmodel) {
1008 case FitProportional:
1009 p->left = (int) (((maxw - w) * zoom) / 2.f);
1010 break;
1011 case FitPage:
1012 {
1013 float zh, h;
1014 zw = maxw / w;
1015 h = box.y1 - box.y0;
1016 zh = state.h / h;
1017 zoom = fz_min (zw, zh);
1018 p->left = (int) ((maxw - (w * zoom)) / 2.f);
1019 }
1020 break;
1021 case FitWidth:
1022 p->left = 0;
1023 zoom = state.w / w;
1024 break;
1025 }
1026
1027 p->zoomctm = fz_scale (zoom, zoom);
1028 ctm = fz_concat (p->zoomctm, ctm);
1029
1030 p->pagebox = p->mediabox;
1031 p->pagebox = fz_transform_rect (p->pagebox, fz_rotate (p->rotate));
1032 p->pagebox.x1 -= p->pagebox.x0;
1033 p->pagebox.y1 -= p->pagebox.y0;
1034 p->pagebox.x0 = 0;
1035 p->pagebox.y0 = 0;
1036 p->bounds = fz_round_rect (fz_transform_rect (p->pagebox, ctm));
1037 p->ctm = ctm;
1038
1039 ctm = fz_concat (fz_translate (0, -p->mediabox.y1),
1040 fz_scale (zoom, -zoom));
1041 p->tctmready = 0;
1042 }
1043
1044 do {
1045 int x0 = fz_mini (p->bounds.x0, p->bounds.x1);
1046 int y0 = fz_mini (p->bounds.y0, p->bounds.y1);
1047 int x1 = fz_maxi (p->bounds.x0, p->bounds.x1);
1048 int y1 = fz_maxi (p->bounds.y0, p->bounds.y1);
1049 int boundw = x1 - x0;
1050 int boundh = y1 - y0;
1051
1052 printd ("pdim %d %d %d %d", p->pageno, boundw, boundh, p->left);
1053 } while (p-- != state.pagedims);
1054 }
1055
1056 static struct pagedim *pdimofpageno (int pageno)
1057 {
1058 struct pagedim *pdim = state.pagedims;
1059
1060 for (int i = 0; i < state.pagedimcount; ++i) {
1061 if (state.pagedims[i].pageno > pageno)
1062 break;
1063 pdim = &state.pagedims[i];
1064 }
1065 return pdim;
1066 }
1067
1068 static void recurse_outline (fz_outline *outline, int level)
1069 {
1070 while (outline) {
1071 if (outline->page >= 0) {
1072 fz_point p = {.x = outline->x, .y = outline->y};
1073 struct pagedim *pdim = pdimofpageno (outline->page);
1074 int h = fz_maxi (fz_absi (pdim->bounds.y1 - pdim->bounds.y0), 0);
1075 p = fz_transform_point (p, pdim->ctm);
1076 printd ("o %d %d %d %d %s",
1077 level, outline->page, (int) p.y, h, outline->title);
1078 }
1079 else {
1080 printd ("on %d %s", level, outline->title);
1081 }
1082 if (outline->down) {
1083 recurse_outline (outline->down, level + 1);
1084 }
1085 outline = outline->next;
1086 }
1087 }
1088
1089 static void process_outline (void)
1090 {
1091 fz_outline *outline;
1092
1093 if (!state.needoutline || !state.pagedimcount) return;
1094
1095 state.needoutline = 0;
1096 outline = fz_load_outline (state.ctx, state.doc);
1097 if (outline) {
1098 recurse_outline (outline, 0);
1099 fz_drop_outline (state.ctx, outline);
1100 }
1101 }
1102
1103 static char *strofline (fz_stext_line *line)
1104 {
1105 char *p;
1106 char utf8[10];
1107 fz_stext_char *ch;
1108 size_t size = 0, cap = 80;
1109
1110 p = malloc (cap + 1);
1111 if (!p) return NULL;
1112
1113 for (ch = line->first_char; ch; ch = ch->next) {
1114 int n = fz_runetochar (utf8, ch->c);
1115 if (size + n > cap) {
1116 cap *= 2;
1117 p = realloc (p, cap + 1);
1118 if (!p) return NULL;
1119 }
1120
1121 memcpy (p + size, utf8, n);
1122 size += n;
1123 }
1124 p[size] = 0;
1125 return p;
1126 }
1127
1128 static int matchline (regex_t *re, fz_stext_line *line,
1129 int stop, int pageno, double start)
1130 {
1131 int ret;
1132 char *p;
1133 regmatch_t rm;
1134
1135 p = strofline (line);
1136 if (!p) return -1;
1137
1138 ret = regexec (re, p, 1, &rm, 0);
1139 if (ret) {
1140 free (p);
1141 if (ret != REG_NOMATCH) {
1142 size_t size;
1143 char errbuf[80];
1144 size = regerror (ret, re, errbuf, sizeof (errbuf));
1145 printd ("msg regexec error `%.*s'",
1146 (int) size, errbuf);
1147 return -1;
1148 }
1149 return 0;
1150 }
1151 else {
1152 fz_quad s, e;
1153 fz_stext_char *ch;
1154 int o = 0;
1155
1156 for (ch = line->first_char; ch; ch = ch->next) {
1157 o += fz_runelen (ch->c);
1158 if (o > rm.rm_so) {
1159 s = ch->quad;
1160 break;
1161 }
1162 }
1163 for (;ch; ch = ch->next) {
1164 o += fz_runelen (ch->c);
1165 if (o > rm.rm_eo) break;
1166 }
1167 e = ch->quad;
1168
1169 if (!stop) {
1170 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1171 pageno, 1,
1172 s.ul.x, s.ul.y,
1173 e.ur.x, s.ul.y,
1174 e.lr.x, e.lr.y,
1175 s.ul.x, e.lr.y);
1176
1177 printd ("progress 1 found at %d `%.*s' in %f sec",
1178 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1179 now () - start);
1180 }
1181 else {
1182 printd ("match %d %d %f %f %f %f %f %f %f %f",
1183 pageno, 2,
1184 s.ul.x, s.ul.y,
1185 e.ur.x, s.ul.y,
1186 e.lr.x, e.lr.y,
1187 s.ul.x, e.lr.y);
1188 }
1189 free (p);
1190 return 1;
1191 }
1192 }
1193
1194 /* wishful thinking function */
1195 static void search (regex_t *re, int pageno, int y, int forward)
1196 {
1197 fz_device *tdev;
1198 fz_stext_page *text;
1199 struct pagedim *pdim;
1200 int stop = 0, niters = 0;
1201 double start, end;
1202 fz_page *page;
1203 fz_stext_block *block;
1204
1205 start = now ();
1206 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1207 if (niters++ == 5) {
1208 niters = 0;
1209 if (hasdata ()) {
1210 printd ("progress 1 attention requested aborting search at %d",
1211 pageno);
1212 stop = 1;
1213 }
1214 else {
1215 printd ("progress %f searching in page %d",
1216 (double) (pageno + 1) / state.pagecount,
1217 pageno);
1218 }
1219 }
1220 pdim = pdimofpageno (pageno);
1221 text = fz_new_stext_page (state.ctx, pdim->mediabox);
1222 tdev = fz_new_stext_device (state.ctx, text, 0);
1223
1224 page = fz_load_page (state.ctx, state.doc, pageno);
1225 fz_run_page (state.ctx, page, tdev, pagectm1 (page, pdim), NULL);
1226
1227 fz_close_device (state.ctx, tdev);
1228 fz_drop_device (state.ctx, tdev);
1229
1230 if (forward) {
1231 for (block = text->first_block; block; block = block->next) {
1232 fz_stext_line *line;
1233
1234 if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
1235 for (line = block->u.t.first_line; line; line = line->next) {
1236 if (line->bbox.y0 < y + 1) continue;
1237
1238 switch (matchline (re, line, stop, pageno, start)) {
1239 case 0: break;
1240 case 1: stop = 1; break;
1241 case -1: stop = 1; goto endloop;
1242 }
1243 }
1244 }
1245 }
1246 else {
1247 for (block = text->last_block; block; block = block->prev) {
1248 fz_stext_line *line;
1249
1250 if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
1251 for (line = block->u.t.last_line; line; line = line->prev) {
1252 if (line->bbox.y0 < y + 1) continue;
1253
1254 switch (matchline (re, line, stop, pageno, start)) {
1255 case 0: break;
1256 case 1: stop = 1; break;
1257 case -1: stop = 1; goto endloop;
1258 }
1259 }
1260 }
1261 }
1262
1263 if (forward) {
1264 pageno += 1;
1265 y = 0;
1266 }
1267 else {
1268 pageno -= 1;
1269 y = INT_MAX;
1270 }
1271 endloop:
1272 fz_drop_stext_page (state.ctx, text);
1273 fz_drop_page (state.ctx, page);
1274 }
1275 end = now ();
1276 if (!stop) {
1277 printd ("progress 1 no matches %f sec", end - start);
1278 }
1279 printd ("clearrects");
1280 }
1281
1282 static void set_tex_params (int colorspace)
1283 {
1284 switch (colorspace) {
1285 case 0:
1286 state.texiform = GL_RGBA8;
1287 state.texform = GL_RGBA;
1288 state.texty = GL_UNSIGNED_BYTE;
1289 state.colorspace = fz_device_rgb (state.ctx);
1290 break;
1291 case 1:
1292 state.texiform = GL_LUMINANCE_ALPHA;
1293 state.texform = GL_LUMINANCE_ALPHA;
1294 state.texty = GL_UNSIGNED_BYTE;
1295 state.colorspace = fz_device_gray (state.ctx);
1296 break;
1297 default:
1298 errx (1, "invalid colorspce %d", colorspace);
1299 }
1300 }
1301
1302 static void realloctexts (int texcount)
1303 {
1304 size_t size;
1305
1306 if (texcount == state.texcount) return;
1307
1308 if (texcount < state.texcount) {
1309 glDeleteTextures (state.texcount - texcount,
1310 state.texids + texcount);
1311 }
1312
1313 size = texcount * (sizeof (*state.texids) + sizeof (*state.texowners));
1314 state.texids = realloc (state.texids, size);
1315 if (!state.texids) {
1316 err (1, "realloc texs %zu", size);
1317 }
1318
1319 state.texowners = (void *) (state.texids + texcount);
1320 if (texcount > state.texcount) {
1321 glGenTextures (texcount - state.texcount,
1322 state.texids + state.texcount);
1323 for (int i = state.texcount; i < texcount; ++i) {
1324 state.texowners[i].w = -1;
1325 state.texowners[i].slice = NULL;
1326 }
1327 }
1328 state.texcount = texcount;
1329 state.texindex = 0;
1330 }
1331
1332 static char *mbtoutf8 (char *s)
1333 {
1334 char *p, *r;
1335 wchar_t *tmp;
1336 size_t i, ret, len;
1337
1338 if (state.utf8cs) {
1339 return s;
1340 }
1341
1342 len = mbstowcs (NULL, s, strlen (s));
1343 if (len == 0 || len == (size_t) -1) {
1344 if (len)
1345 printd ("emsg mbtoutf8: mbstowcs: %d:%s", errno, strerror (errno));
1346 return s;
1347 }
1348
1349 tmp = calloc (len, sizeof (wchar_t));
1350 if (!tmp) {
1351 printd ("emsg mbtoutf8: calloc(%zu, %zu): %d:%s",
1352 len, sizeof (wchar_t), errno, strerror (errno));
1353 return s;
1354 }
1355
1356 ret = mbstowcs (tmp, s, len);
1357 if (ret == (size_t) -1) {
1358 printd ("emsg mbtoutf8: mbswcs %zu characters failed: %d:%s",
1359 len, errno, strerror (errno));
1360 free (tmp);
1361 return s;
1362 }
1363
1364 len = 0;
1365 for (i = 0; i < ret; ++i) {
1366 len += fz_runelen (tmp[i]);
1367 }
1368
1369 p = r = malloc (len + 1);
1370 if (!r) {
1371 printd ("emsg mbtoutf8: malloc(%zu)", len);
1372 free (tmp);
1373 return s;
1374 }
1375
1376 for (i = 0; i < ret; ++i) {
1377 p += fz_runetochar (p, tmp[i]);
1378 }
1379 *p = 0;
1380 free (tmp);
1381 return r;
1382 }
1383
1384 value ml_mbtoutf8 (value s_v);
1385 value ml_mbtoutf8 (value s_v)
1386 {
1387 CAMLparam1 (s_v);
1388 CAMLlocal1 (ret_v);
1389 char *s, *r;
1390
1391 s = String_val (s_v);
1392 r = mbtoutf8 (s);
1393 if (r == s) {
1394 ret_v = s_v;
1395 }
1396 else {
1397 ret_v = caml_copy_string (r);
1398 free (r);
1399 }
1400 CAMLreturn (ret_v);
1401 }
1402
1403 static void * mainloop (void UNUSED_ATTR *unused)
1404 {
1405 char *p = NULL;
1406 int len, ret, oldlen = 0;
1407
1408 fz_var (p);
1409 fz_var (oldlen);
1410 for (;;) {
1411 len = readlen (state.csock);
1412 if (len == 0) {
1413 errx (1, "readlen returned 0");
1414 }
1415
1416 if (oldlen < len + 1) {
1417 p = realloc (p, len + 1);
1418 if (!p) {
1419 err (1, "realloc %d failed", len + 1);
1420 }
1421 oldlen = len + 1;
1422 }
1423 readdata (state.csock, p, len);
1424 p[len] = 0;
1425
1426 if (!strncmp ("open", p, 4)) {
1427 int off, usedoccss, ok = 0, layouth;
1428 char *password;
1429 char *filename;
1430 char *utf8filename;
1431 size_t filenamelen;
1432
1433 fz_var (ok);
1434 ret = sscanf (p + 5, " %d %d %n", &usedoccss, &layouth, &off);
1435 if (ret != 2) {
1436 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1437 }
1438
1439 filename = p + 5 + off;
1440 filenamelen = strlen (filename);
1441 password = filename + filenamelen + 1;
1442
1443 if (password[strlen (password) + 1]) {
1444 fz_set_user_css (state.ctx, password + strlen (password) + 1);
1445 }
1446
1447 lock ("open");
1448 fz_set_use_document_css (state.ctx, usedoccss);
1449 fz_try (state.ctx) {
1450 ok = openxref (filename, password, layouth);
1451 }
1452 fz_catch (state.ctx) {
1453 utf8filename = mbtoutf8 (filename);
1454 printd ("msg Could not open %s", utf8filename);
1455 if (utf8filename != filename) {
1456 free (utf8filename);
1457 }
1458 }
1459 if (ok) {
1460 docinfo ();
1461 initpdims ();
1462 }
1463 unlock ("open");
1464
1465 if (ok) {
1466 utf8filename = mbtoutf8 (filename);
1467 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1468 if (utf8filename != filename) {
1469 free (utf8filename);
1470 }
1471 state.needoutline = 1;
1472 }
1473 }
1474 else if (!strncmp ("cs", p, 2)) {
1475 int i, colorspace;
1476
1477 ret = sscanf (p + 2, " %d", &colorspace);
1478 if (ret != 1) {
1479 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1480 }
1481 lock ("cs");
1482 set_tex_params (colorspace);
1483 for (i = 0; i < state.texcount; ++i) {
1484 state.texowners[i].w = -1;
1485 state.texowners[i].slice = NULL;
1486 }
1487 unlock ("cs");
1488 }
1489 else if (!strncmp ("freepage", p, 8)) {
1490 void *ptr;
1491
1492 ret = sscanf (p + 8, " %" SCNxPTR, (uintptr_t *) &ptr);
1493 if (ret != 1) {
1494 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1495 }
1496 lock ("freepage");
1497 freepage (ptr);
1498 unlock ("freepage");
1499 }
1500 else if (!strncmp ("freetile", p, 8)) {
1501 void *ptr;
1502
1503 ret = sscanf (p + 8, " %" SCNxPTR, (uintptr_t *) &ptr);
1504 if (ret != 1) {
1505 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1506 }
1507 lock ("freetile");
1508 freetile (ptr);
1509 unlock ("freetile");
1510 }
1511 else if (!strncmp ("search", p, 6)) {
1512 int icase, pageno, y, len2, forward;
1513 char *pattern;
1514 regex_t re;
1515
1516 ret = sscanf (p + 6, " %d %d %d %d,%n",
1517 &icase, &pageno, &y, &forward, &len2);
1518 if (ret != 4) {
1519 errx (1, "malformed search `%s' ret=%d", p, ret);
1520 }
1521
1522 pattern = p + 6 + len2;
1523 ret = regcomp (&re, pattern,
1524 REG_EXTENDED | (icase ? REG_ICASE : 0));
1525 if (ret) {
1526 char errbuf[80];
1527 size_t size;
1528
1529 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1530 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1531 }
1532 else {
1533 search (&re, pageno, y, forward);
1534 regfree (&re);
1535 }
1536 }
1537 else if (!strncmp ("geometry", p, 8)) {
1538 int w, h, fitmodel;
1539
1540 printd ("clear");
1541 ret = sscanf (p + 8, " %d %d %d", &w, &h, &fitmodel);
1542 if (ret != 3) {
1543 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1544 }
1545
1546 lock ("geometry");
1547 state.h = h;
1548 if (w != state.w) {
1549 state.w = w;
1550 for (int i = 0; i < state.texcount; ++i) {
1551 state.texowners[i].slice = NULL;
1552 }
1553 }
1554 state.fitmodel = fitmodel;
1555 layout ();
1556 process_outline ();
1557
1558 state.gen++;
1559 unlock ("geometry");
1560 printd ("continue %d", state.pagecount);
1561 }
1562 else if (!strncmp ("reqlayout", p, 9)) {
1563 char *nameddest;
1564 int rotate, off, h;
1565 int fitmodel;
1566 pdf_document *pdf;
1567
1568 printd ("clear");
1569 ret = sscanf (p + 9, " %d %d %d %n",
1570 &rotate, &fitmodel, &h, &off);
1571 if (ret != 3) {
1572 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1573 }
1574 lock ("reqlayout");
1575 pdf = pdf_specifics (state.ctx, state.doc);
1576 if (state.rotate != rotate || state.fitmodel != fitmodel) {
1577 state.gen += 1;
1578 }
1579 state.rotate = rotate;
1580 state.fitmodel = fitmodel;
1581 state.h = h;
1582 layout ();
1583 process_outline ();
1584
1585 nameddest = p + 9 + off;
1586 if (pdf && nameddest && *nameddest) {
1587 fz_point xy;
1588 struct pagedim *pdim;
1589 int pageno = pdf_lookup_anchor (state.ctx, pdf, nameddest,
1590 &xy.x, &xy.y);
1591 pdim = pdimofpageno (pageno);
1592 xy = fz_transform_point (xy, pdim->ctm);
1593 printd ("a %d %d %d", pageno, (int) xy.x, (int) xy.y);
1594 }
1595
1596 state.gen++;
1597 unlock ("reqlayout");
1598 printd ("continue %d", state.pagecount);
1599 }
1600 else if (!strncmp ("page", p, 4)) {
1601 double a, b;
1602 struct page *page;
1603 int pageno, pindex;
1604
1605 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1606 if (ret != 2) {
1607 errx (1, "bad page line `%.*s' ret=%d", len, p, ret);
1608 }
1609
1610 lock ("page");
1611 a = now ();
1612 page = loadpage (pageno, pindex);
1613 b = now ();
1614 unlock ("page");
1615
1616 printd ("page %" PRIxPTR " %f", (uintptr_t) page, b - a);
1617 }
1618 else if (!strncmp ("tile", p, 4)) {
1619 int x, y, w, h;
1620 struct page *page;
1621 struct tile *tile;
1622 double a, b;
1623 void *data;
1624
1625 ret = sscanf (p + 4, " %" SCNxPTR " %d %d %d %d %" SCNxPTR,
1626 (uintptr_t *) &page, &x, &y, &w, &h,
1627 (uintptr_t *) &data);
1628 if (ret != 6) {
1629 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1630 }
1631
1632 lock ("tile");
1633 a = now ();
1634 tile = rendertile (page, x, y, w, h, data);
1635 b = now ();
1636 unlock ("tile");
1637
1638 printd ("tile %d %d %" PRIxPTR " %u %f",
1639 x, y, (uintptr_t) (tile),
1640 tile->w * tile->h * tile->pixmap->n,
1641 b - a);
1642 }
1643 else if (!strncmp ("trimset", p, 7)) {
1644 fz_irect fuzz;
1645 int trimmargins;
1646
1647 ret = sscanf (p + 7, " %d %d %d %d %d",
1648 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1649 if (ret != 5) {
1650 errx (1, "malformed trimset `%.*s' ret=%d", len, p, ret);
1651 }
1652 lock ("trimset");
1653 state.trimmargins = trimmargins;
1654 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1655 state.trimanew = 1;
1656 state.trimfuzz = fuzz;
1657 }
1658 unlock ("trimset");
1659 }
1660 else if (!strncmp ("settrim", p, 7)) {
1661 fz_irect fuzz;
1662 int trimmargins;
1663
1664 ret = sscanf (p + 7, " %d %d %d %d %d",
1665 &trimmargins, &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1666 if (ret != 5) {
1667 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1668 }
1669 printd ("clear");
1670 lock ("settrim");
1671 state.trimmargins = trimmargins;
1672 state.needoutline = 1;
1673 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1674 state.trimanew = 1;
1675 state.trimfuzz = fuzz;
1676 }
1677 state.pagedimcount = 0;
1678 free (state.pagedims);
1679 state.pagedims = NULL;
1680 initpdims ();
1681 layout ();
1682 process_outline ();
1683 unlock ("settrim");
1684 printd ("continue %d", state.pagecount);
1685 }
1686 else if (!strncmp ("sliceh", p, 6)) {
1687 int h;
1688
1689 ret = sscanf (p + 6, " %d", &h);
1690 if (ret != 1) {
1691 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1692 }
1693 if (h != state.sliceheight) {
1694 state.sliceheight = h;
1695 for (int i = 0; i < state.texcount; ++i) {
1696 state.texowners[i].w = -1;
1697 state.texowners[i].h = -1;
1698 state.texowners[i].slice = NULL;
1699 }
1700 }
1701 }
1702 else if (!strncmp ("interrupt", p, 9)) {
1703 printd ("vmsg interrupted");
1704 }
1705 else {
1706 errx (1, "unknown command %.*s", len, p);
1707 }
1708 }
1709 return 0;
1710 }
1711
1712 value ml_isexternallink (value uri_v);
1713 value ml_isexternallink (value uri_v)
1714 {
1715 CAMLparam1 (uri_v);
1716 int ext = fz_is_external_link (state.ctx, String_val (uri_v));
1717 CAMLreturn (Val_bool (ext));
1718 }
1719
1720 value ml_uritolocation (value uri_v);
1721 value ml_uritolocation (value uri_v)
1722 {
1723 CAMLparam1 (uri_v);
1724 CAMLlocal1 (ret_v);
1725 int pageno;
1726 fz_point xy;
1727 struct pagedim *pdim;
1728
1729 pageno = fz_resolve_link (state.ctx, state.doc, String_val (uri_v),
1730 &xy.x, &xy.y);
1731 pdim = pdimofpageno (pageno);
1732 xy = fz_transform_point (xy, pdim->ctm);
1733 ret_v = caml_alloc_tuple (3);
1734 Field (ret_v, 0) = Val_int (pageno);
1735 Field (ret_v, 1) = caml_copy_double ((double) xy.x);
1736 Field (ret_v, 2) = caml_copy_double ((double) xy.y);
1737 CAMLreturn (ret_v);
1738 }
1739
1740 value ml_realloctexts (value texcount_v);
1741 value ml_realloctexts (value texcount_v)
1742 {
1743 CAMLparam1 (texcount_v);
1744 int ok;
1745
1746 if (trylock (__func__)) {
1747 ok = 0;
1748 goto done;
1749 }
1750 realloctexts (Int_val (texcount_v));
1751 ok = 1;
1752 unlock (__func__);
1753
1754 done:
1755 CAMLreturn (Val_bool (ok));
1756 }
1757
1758 static void recti (int x0, int y0, int x1, int y1)
1759 {
1760 GLfloat *v = state.vertices;
1761
1762 glVertexPointer (2, GL_FLOAT, 0, v);
1763 v[0] = x0; v[1] = y0;
1764 v[2] = x1; v[3] = y0;
1765 v[4] = x0; v[5] = y1;
1766 v[6] = x1; v[7] = y1;
1767 glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
1768 }
1769
1770 static void showsel (struct page *page, int ox, int oy)
1771 {
1772 fz_irect bbox;
1773 fz_rect rect;
1774 fz_stext_block *block;
1775 int seen = 0;
1776 unsigned char selcolor[] = {15,15,15,140};
1777
1778 if (!page->fmark || !page->lmark) return;
1779
1780 glEnable (GL_BLEND);
1781 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
1782 glColor4ubv (selcolor);
1783
1784 ox += state.pagedims[page->pdimno].bounds.x0;
1785 oy += state.pagedims[page->pdimno].bounds.y0;
1786
1787 for (block = page->text->first_block; block; block = block->next) {
1788 fz_stext_line *line;
1789
1790 if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
1791 for (line = block->u.t.first_line; line; line = line->next) {
1792 fz_stext_char *ch;
1793
1794 rect = fz_empty_rect;
1795 for (ch = line->first_char; ch; ch = ch->next) {
1796 fz_rect r;
1797 if (ch == page->fmark) seen = 1;
1798 r = fz_rect_from_quad (ch->quad);
1799 if (seen) rect = fz_union_rect (rect, r);
1800 if (ch == page->lmark) {
1801 bbox = fz_round_rect (rect);
1802 recti (bbox.x0 + ox, bbox.y0 + oy,
1803 bbox.x1 + ox, bbox.y1 + oy);
1804 goto done;
1805 }
1806 }
1807 bbox = fz_round_rect (rect);
1808 recti (bbox.x0 + ox, bbox.y0 + oy,
1809 bbox.x1 + ox, bbox.y1 + oy);
1810 }
1811 }
1812 done:
1813 glDisable (GL_BLEND);
1814 }
1815
1816 #pragma GCC diagnostic push
1817 #pragma GCC diagnostic ignored "-Wconversion"
1818 #include "glfont.c"
1819 #pragma GCC diagnostic pop
1820
1821 static void stipplerect (fz_matrix m,
1822 fz_point p1,
1823 fz_point p2,
1824 fz_point p3,
1825 fz_point p4,
1826 GLfloat *texcoords,
1827 GLfloat *vertices)
1828 {
1829 p1 = fz_transform_point (p1, m);
1830 p2 = fz_transform_point (p2, m);
1831 p3 = fz_transform_point (p3, m);
1832 p4 = fz_transform_point (p4, m);
1833 {
1834 float w, h, s, t;
1835
1836 w = p2.x - p1.x;
1837 h = p2.y - p1.y;
1838 t = hypotf (w, h) * .25f;
1839
1840 w = p3.x - p2.x;
1841 h = p3.y - p2.y;
1842 s = hypotf (w, h) * .25f;
1843
1844 texcoords[0] = 0; vertices[0] = p1.x; vertices[1] = p1.y;
1845 texcoords[1] = t; vertices[2] = p2.x; vertices[3] = p2.y;
1846
1847 texcoords[2] = 0; vertices[4] = p2.x; vertices[5] = p2.y;
1848 texcoords[3] = s; vertices[6] = p3.x; vertices[7] = p3.y;
1849
1850 texcoords[4] = 0; vertices[8] = p3.x; vertices[9] = p3.y;
1851 texcoords[5] = t; vertices[10] = p4.x; vertices[11] = p4.y;
1852
1853 texcoords[6] = 0; vertices[12] = p4.x; vertices[13] = p4.y;
1854 texcoords[7] = s; vertices[14] = p1.x; vertices[15] = p1.y;
1855 }
1856 glDrawArrays (GL_LINES, 0, 8);
1857 }
1858
1859 static void solidrect (fz_matrix m,
1860 fz_point p1,
1861 fz_point p2,
1862 fz_point p3,
1863 fz_point p4,
1864 GLfloat *vertices)
1865 {
1866 p1 = fz_transform_point (p1, m);
1867 p2 = fz_transform_point (p2, m);
1868 p3 = fz_transform_point (p3, m);
1869 p4 = fz_transform_point (p4, m);
1870 vertices[0] = p1.x; vertices[1] = p1.y;
1871 vertices[2] = p2.x; vertices[3] = p2.y;
1872
1873 vertices[4] = p3.x; vertices[5] = p3.y;
1874 vertices[6] = p4.x; vertices[7] = p4.y;
1875 glDrawArrays (GL_TRIANGLE_FAN, 0, 4);
1876 }
1877
1878 static void ensurelinks (struct page *page)
1879 {
1880 if (!page->links)
1881 page->links = fz_load_links (state.ctx, page->fzpage);
1882 }
1883
1884 static void highlightlinks (struct page *page, int xoff, int yoff)
1885 {
1886 fz_matrix ctm;
1887 fz_link *link;
1888 GLfloat *texcoords = state.texcoords;
1889 GLfloat *vertices = state.vertices;
1890
1891 ensurelinks (page);
1892
1893 glEnable (GL_TEXTURE_1D);
1894 glEnable (GL_BLEND);
1895 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1896 glBindTexture (GL_TEXTURE_1D, state.stid);
1897
1898 xoff -= state.pagedims[page->pdimno].bounds.x0;
1899 yoff -= state.pagedims[page->pdimno].bounds.y0;
1900 ctm = fz_concat (pagectm (page), fz_translate (xoff, yoff));
1901
1902 glTexCoordPointer (1, GL_FLOAT, 0, texcoords);
1903 glVertexPointer (2, GL_FLOAT, 0, vertices);
1904
1905 for (link = page->links; link; link = link->next) {
1906 fz_point p1, p2, p3, p4;
1907
1908 p1.x = link->rect.x0;
1909 p1.y = link->rect.y0;
1910
1911 p2.x = link->rect.x1;
1912 p2.y = link->rect.y0;
1913
1914 p3.x = link->rect.x1;
1915 p3.y = link->rect.y1;
1916
1917 p4.x = link->rect.x0;
1918 p4.y = link->rect.y1;
1919
1920 /* TODO: different colours for different schemes */
1921 if (fz_is_external_link (state.ctx, link->uri)) glColor3ub (0, 0, 255);
1922 else glColor3ub (255, 0, 0);
1923
1924 stipplerect (ctm, p1, p2, p3, p4, texcoords, vertices);
1925 }
1926
1927 for (int i = 0; i < page->annotcount; ++i) {
1928 fz_point p1, p2, p3, p4;
1929 struct annot *annot = &page->annots[i];
1930
1931 p1.x = annot->bbox.x0;
1932 p1.y = annot->bbox.y0;
1933
1934 p2.x = annot->bbox.x1;
1935 p2.y = annot->bbox.y0;
1936
1937 p3.x = annot->bbox.x1;
1938 p3.y = annot->bbox.y1;
1939
1940 p4.x = annot->bbox.x0;
1941 p4.y = annot->bbox.y1;
1942
1943 glColor3ub (0, 0, 128);
1944 stipplerect (ctm, p1, p2, p3, p4, texcoords, vertices);
1945 }
1946
1947 glDisable (GL_BLEND);
1948 glDisable (GL_TEXTURE_1D);
1949 }
1950
1951 static int compareslinks (const void *l, const void *r)
1952 {
1953 struct slink const *ls = l;
1954 struct slink const *rs = r;
1955 if (ls->bbox.y0 == rs->bbox.y0) {
1956 return rs->bbox.x0 - rs->bbox.x0;
1957 }
1958 return ls->bbox.y0 - rs->bbox.y0;
1959 }
1960
1961 static void droptext (struct page *page)
1962 {
1963 if (page->text) {
1964 fz_drop_stext_page (state.ctx, page->text);
1965 page->fmark = NULL;
1966 page->lmark = NULL;
1967 page->text = NULL;
1968 }
1969 }
1970
1971 static void dropannots (struct page *page)
1972 {
1973 if (page->annots) {
1974 free (page->annots);
1975 page->annots = NULL;
1976 page->annotcount = 0;
1977 }
1978 }
1979
1980 static void ensureannots (struct page *page)
1981 {
1982 int i, count = 0;
1983 size_t annotsize = sizeof (*page->annots);
1984 pdf_annot *annot;
1985 pdf_document *pdf;
1986 pdf_page *pdfpage;
1987
1988 pdf = pdf_specifics (state.ctx, state.doc);
1989 if (!pdf) return;
1990
1991 pdfpage = pdf_page_from_fz_page (state.ctx, page->fzpage);
1992 if (state.gen != page->agen) {
1993 dropannots (page);
1994 page->agen = state.gen;
1995 }
1996 if (page->annots) return;
1997
1998 for (annot = pdf_first_annot (state.ctx, pdfpage);
1999 annot;
2000 annot = pdf_next_annot (state.ctx, annot)) {
2001 count++;
2002 }
2003
2004 if (count > 0) {
2005 page->annotcount = count;
2006 page->annots = calloc (count, annotsize);
2007 if (!page->annots) {
2008 err (1, "calloc annots %d", count);
2009 }
2010
2011 for (annot = pdf_first_annot (state.ctx, pdfpage), i = 0;
2012 annot;
2013 annot = pdf_next_annot (state.ctx, annot), i++) {
2014 fz_rect rect;
2015
2016 rect = pdf_bound_annot (state.ctx, annot);
2017 page->annots[i].annot = annot;
2018 page->annots[i].bbox = fz_round_rect (rect);
2019 }
2020 }
2021 }
2022
2023 static void dropslinks (struct page *page)
2024 {
2025 if (page->slinks) {
2026 free (page->slinks);
2027 page->slinks = NULL;
2028 page->slinkcount = 0;
2029 }
2030 if (page->links) {
2031 fz_drop_link (state.ctx, page->links);
2032 page->links = NULL;
2033 }
2034 }
2035
2036 static void ensureslinks (struct page *page)
2037 {
2038 fz_matrix ctm;
2039 int i, count;
2040 size_t slinksize = sizeof (*page->slinks);
2041 fz_link *link;
2042
2043 ensureannots (page);
2044 if (state.gen != page->sgen) {
2045 dropslinks (page);
2046 page->sgen = state.gen;
2047 }
2048 if (page->slinks) return;
2049
2050 ensurelinks (page);
2051 ctm = pagectm (page);
2052
2053 count = page->annotcount;
2054 for (link = page->links; link; link = link->next) {
2055 count++;
2056 }
2057 if (count > 0) {
2058 int j;
2059
2060 page->slinkcount = count;
2061 page->slinks = calloc (count, slinksize);
2062 if (!page->slinks) {
2063 err (1, "calloc slinks %d", count);
2064 }
2065
2066 for (i = 0, link = page->links; link; ++i, link = link->next) {
2067 fz_rect rect;
2068
2069 rect = link->rect;
2070 rect = fz_transform_rect (rect, ctm);
2071 page->slinks[i].tag = SLINK;
2072 page->slinks[i].u.link = link;
2073 page->slinks[i].bbox = fz_round_rect (rect);
2074 }
2075 for (j = 0; j < page->annotcount; ++j, ++i) {
2076 fz_rect rect;
2077 rect = pdf_bound_annot (state.ctx, page->annots[j].annot);
2078 rect = fz_transform_rect (rect, ctm);
2079 page->slinks[i].bbox = fz_round_rect (rect);
2080
2081 page->slinks[i].tag = SANNOT;
2082 page->slinks[i].u.annot = page->annots[j].annot;
2083 }
2084 qsort (page->slinks, count, slinksize, compareslinks);
2085 }
2086 }
2087
2088 static void highlightslinks (struct page *page, int xoff, int yoff,
2089 int noff, char *targ, mlsize_t tlen, int hfsize)
2090 {
2091 char buf[40];
2092 struct slink *slink;
2093 float x0, y0, x1, y1, w;
2094
2095 ensureslinks (page);
2096 glColor3ub (0xc3, 0xb0, 0x91);
2097 for (int i = 0; i < page->slinkcount; ++i) {
2098 fmt_linkn (buf, i + noff);
2099 if (!tlen || !strncmp (targ, buf, tlen)) {
2100 slink = &page->slinks[i];
2101
2102 x0 = slink->bbox.x0 + xoff - 5;
2103 y1 = slink->bbox.y0 + yoff - 5;
2104 y0 = y1 + 10 + hfsize;
2105 w = measure_string (state.face, hfsize, buf);
2106 x1 = x0 + w + 10;
2107 recti ((int) x0, (int) y0, (int) x1, (int) y1);
2108 }
2109 }
2110
2111 glEnable (GL_BLEND);
2112 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2113 glEnable (GL_TEXTURE_2D);
2114 glColor3ub (0, 0, 0);
2115 for (int i = 0; i < page->slinkcount; ++i) {
2116 fmt_linkn (buf, i + noff);
2117 if (!tlen || !strncmp (targ, buf, tlen)) {
2118 slink = &page->slinks[i];
2119
2120 x0 = slink->bbox.x0 + xoff;
2121 y0 = slink->bbox.y0 + yoff + hfsize;
2122 draw_string (state.face, hfsize, x0, y0, buf);
2123 }
2124 }
2125 glDisable (GL_TEXTURE_2D);
2126 glDisable (GL_BLEND);
2127 }
2128
2129 static void uploadslice (struct tile *tile, struct slice *slice)
2130 {
2131 int offset;
2132 struct slice *slice1;
2133 unsigned char *texdata;
2134
2135 offset = 0;
2136 for (slice1 = tile->slices; slice != slice1; slice1++) {
2137 offset += slice1->h * tile->w * tile->pixmap->n;
2138 }
2139 if (slice->texindex != -1 && slice->texindex < state.texcount
2140 && state.texowners[slice->texindex].slice == slice) {
2141 glBindTexture (TEXT_TYPE, state.texids[slice->texindex]);
2142 }
2143 else {
2144 int subimage = 0;
2145 int texindex = state.texindex++ % state.texcount;
2146
2147 if (state.texowners[texindex].w == tile->w) {
2148 if (state.texowners[texindex].h >= slice->h) {
2149 subimage = 1;
2150 }
2151 else {
2152 state.texowners[texindex].h = slice->h;
2153 }
2154 }
2155 else {
2156 state.texowners[texindex].h = slice->h;
2157 }
2158
2159 state.texowners[texindex].w = tile->w;
2160 state.texowners[texindex].slice = slice;
2161 slice->texindex = texindex;
2162
2163 glBindTexture (TEXT_TYPE, state.texids[texindex]);
2164 #if TEXT_TYPE == GL_TEXTURE_2D
2165 glTexParameteri (TEXT_TYPE, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
2166 glTexParameteri (TEXT_TYPE, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
2167 glTexParameteri (TEXT_TYPE, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
2168 glTexParameteri (TEXT_TYPE, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
2169 #endif
2170 if (tile->pbo) {
2171 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2172 texdata = 0;
2173 }
2174 else {
2175 texdata = tile->pixmap->samples;
2176 }
2177 if (subimage) {
2178 glTexSubImage2D (TEXT_TYPE,
2179 0,
2180 0,
2181 0,
2182 tile->w,
2183 slice->h,
2184 state.texform,
2185 state.texty,
2186 texdata+offset
2187 );
2188 }
2189 else {
2190 glTexImage2D (TEXT_TYPE,
2191 0,
2192 state.texiform,
2193 tile->w,
2194 slice->h,
2195 0,
2196 state.texform,
2197 state.texty,
2198 texdata+offset
2199 );
2200 }
2201 if (tile->pbo) {
2202 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2203 }
2204 }
2205 }
2206
2207 void ml_begintiles (void);
2208 void ml_begintiles (void)
2209 {
2210 glEnable (TEXT_TYPE);
2211 glTexCoordPointer (2, GL_FLOAT, 0, state.texcoords);
2212 glVertexPointer (2, GL_FLOAT, 0, state.vertices);
2213 }
2214
2215 void ml_endtiles (void);
2216 void ml_endtiles (void)
2217 {
2218 glDisable (TEXT_TYPE);
2219 }
2220
2221 void ml_drawtile (value args_v, value ptr_v);
2222 void ml_drawtile (value args_v, value ptr_v)
2223 {
2224 CAMLparam2 (args_v, ptr_v);
2225 int dispx = Int_val (Field (args_v, 0));
2226 int dispy = Int_val (Field (args_v, 1));
2227 int dispw = Int_val (Field (args_v, 2));
2228 int disph = Int_val (Field (args_v, 3));
2229 int tilex = Int_val (Field (args_v, 4));
2230 int tiley = Int_val (Field (args_v, 5));
2231 char *s = String_val (ptr_v);
2232 struct tile *tile = parse_pointer (__func__, s);
2233 int slicey, firstslice;
2234 struct slice *slice;
2235 GLfloat *texcoords = state.texcoords;
2236 GLfloat *vertices = state.vertices;
2237
2238 firstslice = tiley / tile->sliceheight;
2239 slice = &tile->slices[firstslice];
2240 slicey = tiley % tile->sliceheight;
2241
2242 while (disph > 0) {
2243 int dh;
2244
2245 dh = slice->h - slicey;
2246 dh = fz_mini (disph, dh);
2247 uploadslice (tile, slice);
2248
2249 texcoords[0] = tilex; texcoords[1] = slicey;
2250 texcoords[2] = tilex+dispw; texcoords[3] = slicey;
2251 texcoords[4] = tilex; texcoords[5] = slicey+dh;
2252 texcoords[6] = tilex+dispw; texcoords[7] = slicey+dh;
2253
2254 vertices[0] = dispx; vertices[1] = dispy;
2255 vertices[2] = dispx+dispw; vertices[3] = dispy;
2256 vertices[4] = dispx; vertices[5] = dispy+dh;
2257 vertices[6] = dispx+dispw; vertices[7] = dispy+dh;
2258
2259 #if TEXT_TYPE == GL_TEXTURE_2D
2260 for (int i = 0; i < 8; ++i) {
2261 texcoords[i] /= ((i & 1) == 0 ? tile->w : slice->h);
2262 }
2263 #endif
2264
2265 glDrawArrays (GL_TRIANGLE_STRIP, 0, 4);
2266 dispy += dh;
2267 disph -= dh;
2268 slice++;
2269 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2270 slicey = 0;
2271 }
2272 CAMLreturn0;
2273 }
2274
2275 static void drawprect (struct page *page, int xoff, int yoff, value rects_v)
2276 {
2277 fz_matrix ctm;
2278 fz_point p1, p2, p3, p4;
2279 GLfloat *vertices = state.vertices;
2280 double *v = (double *) rects_v;
2281
2282 xoff -= state.pagedims[page->pdimno].bounds.x0;
2283 yoff -= state.pagedims[page->pdimno].bounds.y0;
2284 ctm = fz_concat (pagectm (page), fz_translate (xoff, yoff));
2285
2286 glEnable (GL_BLEND);
2287 glVertexPointer (2, GL_FLOAT, 0, vertices);
2288
2289 glColor4dv (v);
2290 p1.x = (float) v[4];
2291 p1.y = (float) v[5];
2292
2293 p2.x = (float) v[6];
2294 p2.y = (float) v[5];
2295
2296 p3.x = (float) v[6];
2297 p3.y = (float) v[7];
2298
2299 p4.x = (float) v[4];
2300 p4.y = (float) v[7];
2301 solidrect (ctm, p1, p2, p3, p4, vertices);
2302 glDisable (GL_BLEND);
2303 }
2304
2305 value ml_postprocess (value ptr_v, value hlinks_v,
2306 value xoff_v, value yoff_v,
2307 value li_v);
2308 value ml_postprocess (value ptr_v, value hlinks_v,
2309 value xoff_v, value yoff_v,
2310 value li_v)
2311 {
2312 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2313 int xoff = Int_val (xoff_v);
2314 int yoff = Int_val (yoff_v);
2315 int noff = Int_val (Field (li_v, 0));
2316 char *targ = String_val (Field (li_v, 1));
2317 mlsize_t tlen = caml_string_length (Field (li_v, 1));
2318 int hfsize = Int_val (Field (li_v, 2));
2319 char *s = String_val (ptr_v);
2320 int hlmask = Int_val (hlinks_v);
2321 struct page *page = parse_pointer (__func__, s);
2322
2323 if (!page->fzpage) {
2324 /* deal with loadpage failed pages */
2325 goto done;
2326 }
2327
2328 if (trylock (__func__)) {
2329 noff = -1;
2330 goto done;
2331 }
2332
2333 ensureannots (page);
2334 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2335 if (hlmask & 2) {
2336 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2337 noff = page->slinkcount;
2338 }
2339 if (page->tgen == state.gen) {
2340 showsel (page, xoff, yoff);
2341 }
2342 unlock (__func__);
2343
2344 done:
2345 CAMLreturn (Val_int (noff));
2346 }
2347
2348 void ml_drawprect (value ptr_v, value xoff_v, value yoff_v, value rects_v);
2349 void ml_drawprect (value ptr_v, value xoff_v, value yoff_v, value rects_v)
2350 {
2351 CAMLparam4 (ptr_v, xoff_v, yoff_v, rects_v);
2352 int xoff = Int_val (xoff_v);
2353 int yoff = Int_val (yoff_v);
2354 char *s = String_val (ptr_v);
2355 struct page *page = parse_pointer (__func__, s);
2356
2357 drawprect (page, xoff, yoff, rects_v);
2358 CAMLreturn0;
2359 }
2360
2361 static struct annot *getannot (struct page *page, int x, int y)
2362 {
2363 fz_point p;
2364 fz_matrix ctm;
2365 const fz_matrix *tctm;
2366 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
2367
2368 if (!page->annots) return NULL;
2369
2370 if (pdf) {
2371 trimctm (pdf_page_from_fz_page (state.ctx, page->fzpage), page->pdimno);
2372 tctm = &state.pagedims[page->pdimno].tctm;
2373 }
2374 else {
2375 tctm = &fz_identity;
2376 }
2377
2378 p.x = x;
2379 p.y = y;
2380
2381 ctm = fz_concat (*tctm, state.pagedims[page->pdimno].ctm);
2382 ctm = fz_invert_matrix (ctm);
2383 p = fz_transform_point (p, ctm);
2384
2385 if (pdf) {
2386 for (int i = 0; i < page->annotcount; ++i) {
2387 struct annot *a = &page->annots[i];
2388 fz_rect rect;
2389
2390 rect = pdf_bound_annot (state.ctx, a->annot);
2391 if (p.x >= rect.x0 && p.x <= rect.x1) {
2392 if (p.y >= rect.y0 && p.y <= rect.y1)
2393 return a;
2394 }
2395 }
2396 }
2397 return NULL;
2398 }
2399
2400 static fz_link *getlink (struct page *page, int x, int y)
2401 {
2402 fz_point p;
2403 fz_link *link;
2404
2405 ensureslinks (page);
2406
2407 p.x = x;
2408 p.y = y;
2409
2410 p = fz_transform_point (p, fz_invert_matrix (pagectm (page)));
2411
2412 for (link = page->links; link; link = link->next) {
2413 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2414 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2415 return link;
2416 }
2417 }
2418 }
2419 return NULL;
2420 }
2421
2422 static void ensuretext (struct page *page)
2423 {
2424 if (state.gen != page->tgen) {
2425 droptext (page);
2426 page->tgen = state.gen;
2427 }
2428 if (!page->text) {
2429 fz_device *tdev;
2430
2431 page->text = fz_new_stext_page (state.ctx,
2432 state.pagedims[page->pdimno].mediabox);
2433 tdev = fz_new_stext_device (state.ctx, page->text, 0);
2434 fz_run_display_list (state.ctx, page->dlist,
2435 tdev, pagectm (page), fz_infinite_rect, NULL);
2436 fz_close_device (state.ctx, tdev);
2437 fz_drop_device (state.ctx, tdev);
2438 }
2439 }
2440
2441 value ml_find_page_with_links (value start_page_v, value dir_v);
2442 value ml_find_page_with_links (value start_page_v, value dir_v)
2443 {
2444 CAMLparam2 (start_page_v, dir_v);
2445 CAMLlocal1 (ret_v);
2446 int i, dir = Int_val (dir_v);
2447 int start_page = Int_val (start_page_v);
2448 int end_page = dir > 0 ? state.pagecount : -1;
2449 pdf_document *pdf;
2450
2451 fz_var (end_page);
2452 ret_v = Val_int (0);
2453 lock (__func__);
2454 pdf = pdf_specifics (state.ctx, state.doc);
2455 for (i = start_page + dir; i != end_page; i += dir) {
2456 int found;
2457
2458 fz_var (found);
2459 if (pdf) {
2460 pdf_page *page = NULL;
2461
2462 fz_var (page);
2463 fz_try (state.ctx) {
2464 page = pdf_load_page (state.ctx, pdf, i);
2465 found = !!page->links || !!page->annots;
2466 }
2467 fz_catch (state.ctx) {
2468 found = 0;
2469 }
2470 if (page) {
2471 fz_drop_page (state.ctx, &page->super);
2472 }
2473 }
2474 else {
2475 fz_page *page = fz_load_page (state.ctx, state.doc, i);
2476 fz_link *link = fz_load_links (state.ctx, page);
2477 found = !!link;
2478 fz_drop_link (state.ctx, link);
2479 fz_drop_page (state.ctx, page);
2480 }
2481
2482 if (found) {
2483 ret_v = caml_alloc_small (1, 1);
2484 Field (ret_v, 0) = Val_int (i);
2485 goto unlock;
2486 }
2487 }
2488 unlock:
2489 unlock (__func__);
2490 CAMLreturn (ret_v);
2491 }
2492
2493 enum { dir_first, dir_last };
2494 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2495
2496 value ml_findlink (value ptr_v, value dir_v);
2497 value ml_findlink (value ptr_v, value dir_v)
2498 {
2499 CAMLparam2 (ptr_v, dir_v);
2500 CAMLlocal2 (ret_v, pos_v);
2501 struct page *page;
2502 int dirtag, i, slinkindex;
2503 struct slink *found = NULL ,*slink;
2504 char *s = String_val (ptr_v);
2505
2506 page = parse_pointer (__func__, s);
2507 ret_v = Val_int (0);
2508 lock (__func__);
2509 ensureslinks (page);
2510
2511 if (Is_block (dir_v)) {
2512 dirtag = Tag_val (dir_v);
2513 switch (dirtag) {
2514 case dir_first_visible:
2515 {
2516 int x0, y0, dir, first_index, last_index;
2517
2518 pos_v = Field (dir_v, 0);
2519 x0 = Int_val (Field (pos_v, 0));
2520 y0 = Int_val (Field (pos_v, 1));
2521 dir = Int_val (Field (pos_v, 2));
2522
2523 if (dir >= 0) {
2524 dir = 1;
2525 first_index = 0;
2526 last_index = page->slinkcount;
2527 }
2528 else {
2529 first_index = page->slinkcount - 1;
2530 last_index = -1;
2531 }
2532
2533 for (i = first_index; i != last_index; i += dir) {
2534 slink = &page->slinks[i];
2535 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2536 found = slink;
2537 break;
2538 }
2539 }
2540 }
2541 break;
2542
2543 case dir_left:
2544 slinkindex = Int_val (Field (dir_v, 0));
2545 found = &page->slinks[slinkindex];
2546 for (i = slinkindex - 1; i >= 0; --i) {
2547 slink = &page->slinks[i];
2548 if (slink->bbox.x0 < found->bbox.x0) {
2549 found = slink;
2550 break;
2551 }
2552 }
2553 break;
2554
2555 case dir_right:
2556 slinkindex = Int_val (Field (dir_v, 0));
2557 found = &page->slinks[slinkindex];
2558 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2559 slink = &page->slinks[i];
2560 if (slink->bbox.x0 > found->bbox.x0) {
2561 found = slink;
2562 break;
2563 }
2564 }
2565 break;
2566
2567 case dir_down:
2568 slinkindex = Int_val (Field (dir_v, 0));
2569 found = &page->slinks[slinkindex];
2570 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2571 slink = &page->slinks[i];
2572 if (slink->bbox.y0 >= found->bbox.y0) {
2573 found = slink;
2574 break;
2575 }
2576 }
2577 break;
2578
2579 case dir_up:
2580 slinkindex = Int_val (Field (dir_v, 0));
2581 found = &page->slinks[slinkindex];
2582 for (i = slinkindex - 1; i >= 0; --i) {
2583 slink = &page->slinks[i];
2584 if (slink->bbox.y0 <= found->bbox.y0) {
2585 found = slink;
2586 break;
2587 }
2588 }
2589 break;
2590 }
2591 }
2592 else {
2593 dirtag = Int_val (dir_v);
2594 switch (dirtag) {
2595 case dir_first:
2596 found = page->slinks;
2597 break;
2598
2599 case dir_last:
2600 if (page->slinks) {
2601 found = page->slinks + (page->slinkcount - 1);
2602 }
2603 break;
2604 }
2605 }
2606 if (found) {
2607 ret_v = caml_alloc_small (2, 1);
2608 Field (ret_v, 0) = Val_int (found - page->slinks);
2609 }
2610
2611 unlock (__func__);
2612 CAMLreturn (ret_v);
2613 }
2614
2615 enum { uuri, utext, uannot };
2616
2617 value ml_getlink (value ptr_v, value n_v);
2618 value ml_getlink (value ptr_v, value n_v)
2619 {
2620 CAMLparam2 (ptr_v, n_v);
2621 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
2622 fz_link *link;
2623 struct page *page;
2624 char *s = String_val (ptr_v);
2625 struct slink *slink;
2626
2627 ret_v = Val_int (0);
2628 page = parse_pointer (__func__, s);
2629
2630 lock (__func__);
2631 ensureslinks (page);
2632 slink = &page->slinks[Int_val (n_v)];
2633 if (slink->tag == SLINK) {
2634 link = slink->u.link;
2635 str_v = caml_copy_string (link->uri);
2636 ret_v = caml_alloc_small (1, uuri);
2637 Field (ret_v, 0) = str_v;
2638 }
2639 else {
2640 ret_v = caml_alloc_small (1, uannot);
2641 tup_v = caml_alloc_tuple (2);
2642 Field (ret_v, 0) = tup_v;
2643 Field (tup_v, 0) = ptr_v;
2644 Field (tup_v, 1) = n_v;
2645 }
2646 unlock (__func__);
2647
2648 CAMLreturn (ret_v);
2649 }
2650
2651 value ml_getannotcontents (value ptr_v, value n_v);
2652 value ml_getannotcontents (value ptr_v, value n_v)
2653 {
2654 CAMLparam2 (ptr_v, n_v);
2655 CAMLlocal1 (ret_v);
2656 pdf_document *pdf;
2657 const char *contents = "";
2658
2659 lock (__func__);
2660 pdf = pdf_specifics (state.ctx, state.doc);
2661 if (pdf) {
2662 char *s = String_val (ptr_v);
2663 struct page *page;
2664 struct slink *slink;
2665
2666 page = parse_pointer (__func__, s);
2667 slink = &page->slinks[Int_val (n_v)];
2668 contents = pdf_annot_contents (state.ctx, (pdf_annot *) slink->u.annot);
2669 }
2670 unlock (__func__);
2671 ret_v = caml_copy_string (contents);
2672 CAMLreturn (ret_v);
2673 }
2674
2675 value ml_getlinkcount (value ptr_v);
2676 value ml_getlinkcount (value ptr_v)
2677 {
2678 CAMLparam1 (ptr_v);
2679 struct page *page;
2680 char *s = String_val (ptr_v);
2681
2682 page = parse_pointer (__func__, s);
2683 CAMLreturn (Val_int (page->slinkcount));
2684 }
2685
2686 value ml_getlinkrect (value ptr_v, value n_v);
2687 value ml_getlinkrect (value ptr_v, value n_v)
2688 {
2689 CAMLparam2 (ptr_v, n_v);
2690 CAMLlocal1 (ret_v);
2691 struct page *page;
2692 struct slink *slink;
2693 char *s = String_val (ptr_v);
2694
2695 page = parse_pointer (__func__, s);
2696 ret_v = caml_alloc_tuple (4);
2697 lock (__func__);
2698 ensureslinks (page);
2699
2700 slink = &page->slinks[Int_val (n_v)];
2701 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2702 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2703 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2704 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2705 unlock (__func__);
2706 CAMLreturn (ret_v);
2707 }
2708
2709 value ml_whatsunder (value ptr_v, value x_v, value y_v);
2710 value ml_whatsunder (value ptr_v, value x_v, value y_v)
2711 {
2712 CAMLparam3 (ptr_v, x_v, y_v);
2713 CAMLlocal4 (ret_v, tup_v, str_v, gr_v);
2714 fz_link *link;
2715 struct annot *annot;
2716 struct page *page;
2717 char *ptr = String_val (ptr_v);
2718 int x = Int_val (x_v), y = Int_val (y_v);
2719 struct pagedim *pdim;
2720
2721 ret_v = Val_int (0);
2722 if (trylock (__func__)) {
2723 goto done;
2724 }
2725
2726 page = parse_pointer (__func__, ptr);
2727 pdim = &state.pagedims[page->pdimno];
2728 x += pdim->bounds.x0;
2729 y += pdim->bounds.y0;
2730
2731 {
2732 annot = getannot (page, x, y);
2733 if (annot) {
2734 int i, n = -1;
2735
2736 ensureslinks (page);
2737 for (i = 0; i < page->slinkcount; ++i) {
2738 if (page->slinks[i].tag == SANNOT
2739 && page->slinks[i].u.annot == annot->annot) {
2740 n = i;
2741 break;
2742 }
2743 }
2744 ret_v = caml_alloc_small (1, uannot);
2745 tup_v = caml_alloc_tuple (2);
2746 Field (ret_v, 0) = tup_v;
2747 Field (tup_v, 0) = ptr_v;
2748 Field (tup_v, 1) = Val_int (n);
2749 goto unlock;
2750 }
2751 }
2752
2753 link = getlink (page, x, y);
2754 if (link) {
2755 str_v = caml_copy_string (link->uri);
2756 ret_v = caml_alloc_small (1, uuri);
2757 Field (ret_v, 0) = str_v;
2758 }
2759 else {
2760 fz_rect *b;
2761 fz_stext_block *block;
2762
2763 ensuretext (page);
2764
2765 for (block = page->text->first_block; block; block = block->next) {
2766 fz_stext_line *line;
2767
2768 if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
2769 b = &block->bbox;
2770 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2771 continue;
2772
2773 for (line = block->u.t.first_line; line; line = line->next) {
2774 fz_stext_char *ch;
2775
2776 b = &line->bbox;
2777 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2778 continue;
2779
2780 for (ch = line->first_char; ch; ch = ch->next) {
2781 fz_quad *q = &ch->quad;
2782
2783 if (x >= q->ul.x && x <= q->ur.x
2784 && y >= q->ul.y && y <= q->ll.y) {
2785 const char *n2 = fz_font_name (state.ctx, ch->font);
2786 FT_FaceRec *face = fz_font_ft_face (state.ctx,
2787 ch->font);
2788
2789 if (!n2) n2 = "<unknown font>";
2790
2791 if (face && face->family_name) {
2792 char *s;
2793 char *n1 = face->family_name;
2794 size_t l1 = strlen (n1);
2795 size_t l2 = strlen (n2);
2796
2797 if (l1 != l2 || memcmp (n1, n2, l1)) {
2798 s = malloc (l1 + l2 + 2);
2799 if (s) {
2800 memcpy (s, n2, l2);
2801 s[l2] = '=';
2802 memcpy (s + l2 + 1, n1, l1 + 1);
2803 str_v = caml_copy_string (s);
2804 free (s);
2805 }
2806 }
2807 }
2808 if (str_v == Val_unit) {
2809 str_v = caml_copy_string (n2);
2810 }
2811 ret_v = caml_alloc_small (1, utext);
2812 Field (ret_v, 0) = str_v;
2813 goto unlock;
2814 }
2815 }
2816 }
2817 }
2818 }
2819 unlock:
2820 unlock (__func__);
2821
2822 done:
2823 CAMLreturn (ret_v);
2824 }
2825
2826 enum { mark_page, mark_block, mark_line, mark_word };
2827
2828 void ml_clearmark (value ptr_v);
2829 void ml_clearmark (value ptr_v)
2830 {
2831 CAMLparam1 (ptr_v);
2832 char *s = String_val (ptr_v);
2833 struct page *page;
2834
2835 if (trylock (__func__)) {
2836 goto done;
2837 }
2838
2839 page = parse_pointer (__func__, s);
2840 page->fmark = NULL;
2841 page->lmark = NULL;
2842
2843 unlock (__func__);
2844 done:
2845 CAMLreturn0;
2846 }
2847
2848 static int uninteresting (int c)
2849 {
2850 return isspace (c) || ispunct (c);
2851 }
2852
2853 value ml_markunder (value ptr_v, value x_v, value y_v, value mark_v);
2854 value ml_markunder (value ptr_v, value x_v, value y_v, value mark_v)
2855 {
2856 CAMLparam4 (ptr_v, x_v, y_v, mark_v);
2857 CAMLlocal1 (ret_v);
2858 fz_rect *b;
2859 struct page *page;
2860 fz_stext_line *line;
2861 fz_stext_block *block;
2862 struct pagedim *pdim;
2863 int mark = Int_val (mark_v);
2864 char *s = String_val (ptr_v);
2865 int x = Int_val (x_v), y = Int_val (y_v);
2866
2867 ret_v = Val_bool (0);
2868 if (trylock (__func__)) {
2869 goto done;
2870 }
2871
2872 page = parse_pointer (__func__, s);
2873 pdim = &state.pagedims[page->pdimno];
2874
2875 ensuretext (page);
2876
2877 if (mark == mark_page) {
2878 page->fmark = page->text->first_block->u.t.first_line->first_char;
2879 page->lmark = page->text->last_block->u.t.last_line->last_char;
2880 ret_v = Val_bool (1);
2881 goto unlock;
2882 }
2883
2884 x += pdim->bounds.x0;
2885 y += pdim->bounds.y0;
2886
2887 for (block = page->text->first_block; block; block = block->next) {
2888 if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
2889 b = &block->bbox;
2890 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2891 continue;
2892
2893 if (mark == mark_block) {
2894 page->fmark = block->u.t.first_line->first_char;
2895 page->lmark = block->u.t.last_line->last_char;
2896 ret_v = Val_bool (1);
2897 goto unlock;
2898 }
2899
2900 for (line = block->u.t.first_line; line; line = line->next) {
2901 fz_stext_char *ch;
2902
2903 b = &line->bbox;
2904 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2905 continue;
2906
2907 if (mark == mark_line) {
2908 page->fmark = line->first_char;
2909 page->lmark = line->last_char;
2910 ret_v = Val_bool (1);
2911 goto unlock;
2912 }
2913
2914 for (ch = line->first_char; ch; ch = ch->next) {
2915 fz_stext_char *ch2, *first = NULL, *last = NULL;
2916 fz_quad *q = &ch->quad;
2917 if (x >= q->ul.x && x <= q->ur.x
2918 && y >= q->ul.y && y <= q->ll.y) {
2919 for (ch2 = line->first_char; ch2 != ch; ch2 = ch2->next) {
2920 if (uninteresting (ch2->c)) first = NULL;
2921 else if (!first) first = ch2;
2922 }
2923 for (ch2 = ch; ch2; ch2 = ch2->next) {
2924 if (uninteresting (ch2->c)) break;
2925 last = ch2;
2926 }
2927
2928 page->fmark = first;
2929 page->lmark = last;
2930 ret_v = Val_bool (1);
2931 goto unlock;
2932 }
2933 }
2934 }
2935 }
2936 unlock:
2937 if (!Bool_val (ret_v)) {
2938 page->fmark = NULL;
2939 page->lmark = NULL;
2940 }
2941 unlock (__func__);
2942
2943 done:
2944 CAMLreturn (ret_v);
2945 }
2946
2947 value ml_rectofblock (value ptr_v, value x_v, value y_v);
2948 value ml_rectofblock (value ptr_v, value x_v, value y_v)
2949 {
2950 CAMLparam3 (ptr_v, x_v, y_v);
2951 CAMLlocal2 (ret_v, res_v);
2952 fz_rect *b = NULL;
2953 struct page *page;
2954 struct pagedim *pdim;
2955 fz_stext_block *block;
2956 char *s = String_val (ptr_v);
2957 int x = Int_val (x_v), y = Int_val (y_v);
2958
2959 ret_v = Val_int (0);
2960 if (trylock (__func__)) {
2961 goto done;
2962 }
2963
2964 page = parse_pointer (__func__, s);
2965 pdim = &state.pagedims[page->pdimno];
2966 x += pdim->bounds.x0;
2967 y += pdim->bounds.y0;
2968
2969 ensuretext (page);
2970
2971 for (block = page->text->first_block; block; block = block->next) {
2972 switch (block->type) {
2973 case FZ_STEXT_BLOCK_TEXT:
2974 b = &block->bbox;
2975 break;
2976
2977 case FZ_STEXT_BLOCK_IMAGE:
2978 b = &block->bbox;
2979 break;
2980
2981 default:
2982 continue;
2983 }
2984
2985 if (x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1)
2986 break;
2987 b = NULL;
2988 }
2989 if (b) {
2990 res_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
2991 ret_v = caml_alloc_small (1, 1);
2992 Store_double_field (res_v, 0, (double) b->x0);
2993 Store_double_field (res_v, 1, (double) b->x1);
2994 Store_double_field (res_v, 2, (double) b->y0);
2995 Store_double_field (res_v, 3, (double) b->y1);
2996 Field (ret_v, 0) = res_v;
2997 }
2998 unlock (__func__);
2999
3000 done:
3001 CAMLreturn (ret_v);
3002 }
3003
3004 void ml_seltext (value ptr_v, value rect_v);
3005 void ml_seltext (value ptr_v, value rect_v)
3006 {
3007 CAMLparam2 (ptr_v, rect_v);
3008 struct page *page;
3009 struct pagedim *pdim;
3010 char *s = String_val (ptr_v);
3011 int x0, x1, y0, y1;
3012 fz_stext_char *ch;
3013 fz_stext_line *line;
3014 fz_stext_block *block;
3015 fz_stext_char *fc, *lc;
3016
3017 if (trylock (__func__)) {
3018 goto done;
3019 }
3020
3021 page = parse_pointer (__func__, s);
3022 ensuretext (page);
3023
3024 pdim = &state.pagedims[page->pdimno];
3025 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;
3026 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
3027 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
3028 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
3029
3030 if (y0 > y1) {
3031 int t = y0;
3032 y0 = y1;
3033 y1 = t;
3034 x0 = x1;
3035 x1 = t;
3036 }
3037
3038 fc = page->fmark;
3039 lc = page->lmark;
3040
3041 for (block = page->text->first_block; block; block = block->next) {
3042 if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
3043 for (line = block->u.t.first_line; line; line = line->next) {
3044 for (ch = line->first_char; ch; ch = ch->next) {
3045 fz_quad q = ch->quad;
3046 if (x0 >= q.ul.x && x0 <= q.ur.x
3047 && y0 >= q.ul.y && y0 <= q.ll.y) {
3048 fc = ch;
3049 }
3050 if (x1 >= q.ul.x && x1 <= q.ur.x
3051 && y1 >= q.ul.y && y1 <= q.ll.y) {
3052 lc = ch;
3053 }
3054 }
3055 }
3056 }
3057 if (x1 < x0 && fc == lc) {
3058 fz_stext_char *t;
3059
3060 t = fc;
3061 fc = lc;
3062 lc = t;
3063 }
3064
3065 page->fmark = fc;
3066 page->lmark = lc;
3067
3068 unlock (__func__);
3069
3070 done:
3071 CAMLreturn0;
3072 }
3073
3074 static int pipechar (FILE *f, fz_stext_char *ch)
3075 {
3076 char buf[4];
3077 int len;
3078 size_t ret;
3079
3080 len = fz_runetochar (buf, ch->c);
3081 ret = fwrite (buf, len, 1, f);
3082 if (ret != 1) {
3083 printd ("emsg failed to write %d bytes ret=%zu: %d:%s",
3084 len, ret, errno, strerror (errno));
3085 return -1;
3086 }
3087 return 0;
3088 }
3089
3090 value ml_spawn (value command_v, value fds_v);
3091 value ml_spawn (value command_v, value fds_v)
3092 {
3093 CAMLparam2 (command_v, fds_v);
3094 CAMLlocal2 (l_v, tup_v);
3095 int ret, ret1;
3096 pid_t pid = (pid_t) -1;
3097 char *msg = NULL;
3098 value earg_v = Nothing;
3099 posix_spawnattr_t attr;
3100 posix_spawn_file_actions_t fa;
3101 char *argv[] = { "/bin/sh", "-c", NULL, NULL };
3102
3103 argv[2] = String_val (command_v);
3104
3105 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
3106 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
3107 }
3108
3109 if ((ret = posix_spawnattr_init (&attr)) != 0) {
3110 msg = "posix_spawnattr_init";
3111 goto fail1;
3112 }
3113
3114 #ifdef POSIX_SPAWN_USEVFORK
3115 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
3116 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
3117 goto fail;
3118 }
3119 #endif
3120
3121 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
3122 int fd1, fd2;
3123
3124 tup_v = Field (l_v, 0);
3125 fd1 = Int_val (Field (tup_v, 0));
3126 fd2 = Int_val (Field (tup_v, 1));
3127 if (fd2 < 0) {
3128 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
3129 msg = "posix_spawn_file_actions_addclose";
3130 earg_v = tup_v;
3131 goto fail;
3132 }
3133 }
3134 else {
3135 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3136 msg = "posix_spawn_file_actions_adddup2";
3137 earg_v = tup_v;
3138 goto fail;
3139 }
3140 }
3141 }
3142
3143 if ((ret = posix_spawn (&pid, "/bin/sh", &fa, &attr, argv, environ))) {
3144 msg = "posix_spawn";
3145 goto fail;
3146 }
3147
3148 fail:
3149 if ((ret1 = posix_spawnattr_destroy (&attr)) != 0) {
3150 printd ("emsg posix_spawnattr_destroy: %d:%s", ret1, strerror (ret1));
3151 }
3152
3153 fail1:
3154 if ((ret1 = posix_spawn_file_actions_destroy (&fa)) != 0) {
3155 printd ("emsg posix_spawn_file_actions_destroy: %d:%s",
3156 ret1, strerror (ret1));
3157 }
3158
3159 if (msg)
3160 unix_error (ret, msg, earg_v);
3161
3162 CAMLreturn (Val_int (pid));
3163 }
3164
3165 value ml_hassel (value ptr_v);
3166 value ml_hassel (value ptr_v)
3167 {
3168 CAMLparam1 (ptr_v);
3169 CAMLlocal1 (ret_v);
3170 struct page *page;
3171 char *s = String_val (ptr_v);
3172
3173 ret_v = Val_bool (0);
3174 if (trylock (__func__)) {
3175 goto done;
3176 }
3177
3178 page = parse_pointer (__func__, s);
3179 ret_v = Val_bool (page->fmark && page->lmark);
3180 unlock (__func__);
3181 done:
3182 CAMLreturn (ret_v);
3183 }
3184
3185 void ml_copysel (value fd_v, value ptr_v);
3186 void ml_copysel (value fd_v, value ptr_v)
3187 {
3188 CAMLparam2 (fd_v, ptr_v);
3189 FILE *f;
3190 int seen = 0;
3191 struct page *page;
3192 fz_stext_line *line;
3193 fz_stext_block *block;
3194 int fd = Int_val (fd_v);
3195 char *s = String_val (ptr_v);
3196
3197 if (trylock (__func__)) {
3198 goto done;
3199 }
3200
3201 page = parse_pointer (__func__, s);
3202
3203 if (!page->fmark || !page->lmark) {
3204 printd ("emsg nothing to copy on page %d", page->pageno);
3205 goto unlock;
3206 }
3207
3208 f = fdopen (fd, "w");
3209 if (!f) {
3210 printd ("emsg failed to fdopen sel pipe (from fd %d): %d:%s",
3211 fd, errno, strerror (errno));
3212 f = stdout;
3213 }
3214
3215 for (block = page->text->first_block; block; block = block->next) {
3216 if (block->type != FZ_STEXT_BLOCK_TEXT) continue;
3217 for (line = block->u.t.first_line; line; line = line->next) {
3218 fz_stext_char *ch;
3219 for (ch = line->first_char; ch; ch = ch->next) {
3220 if (seen || ch == page->fmark) {
3221 do {
3222 pipechar (f, ch);
3223 if (ch == page->lmark) goto close;
3224 } while ((ch = ch->next));
3225 seen = 1;
3226 break;
3227 }
3228 }
3229 if (seen) fputc ('\n', f);
3230 }
3231 }
3232 close:
3233 if (f != stdout) {
3234 int ret = fclose (f);
3235 fd = -1;
3236 if (ret == -1) {
3237 if (errno != ECHILD) {
3238 printd ("emsg failed to close sel pipe: %d:%s",
3239 errno, strerror (errno));
3240 }
3241 }
3242 }
3243 unlock:
3244 unlock (__func__);
3245
3246 done:
3247 if (fd >= 0) {
3248 if (close (fd)) {
3249 printd ("emsg failed to close sel pipe: %d:%s",
3250 errno, strerror (errno));
3251 }
3252 }
3253 CAMLreturn0;
3254 }
3255
3256 value ml_getpdimrect (value pagedimno_v);
3257 value ml_getpdimrect (value pagedimno_v)
3258 {
3259 CAMLparam1 (pagedimno_v);
3260 CAMLlocal1 (ret_v);
3261 int pagedimno = Int_val (pagedimno_v);
3262 fz_rect box;
3263
3264 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3265 if (trylock (__func__)) {
3266 box = fz_empty_rect;
3267 }
3268 else {
3269 box = state.pagedims[pagedimno].mediabox;
3270 unlock (__func__);
3271 }
3272
3273 Store_double_field (ret_v, 0, (double) box.x0);
3274 Store_double_field (ret_v, 1, (double) box.x1);
3275 Store_double_field (ret_v, 2, (double) box.y0);
3276 Store_double_field (ret_v, 3, (double) box.y1);
3277
3278 CAMLreturn (ret_v);
3279 }
3280
3281 value ml_zoom_for_height (value winw_v, value winh_v,
3282 value dw_v, value cols_v);
3283 value ml_zoom_for_height (value winw_v, value winh_v,
3284 value dw_v, value cols_v)
3285 {
3286 CAMLparam4 (winw_v, winh_v, dw_v, cols_v);
3287 CAMLlocal1 (ret_v);
3288 int i;
3289 float zoom = -1.;
3290 float maxh = 0.0;
3291 struct pagedim *p;
3292 float winw = Int_val (winw_v);
3293 float winh = Int_val (winh_v);
3294 float dw = Int_val (dw_v);
3295 float cols = Int_val (cols_v);
3296 float pw = 1.0, ph = 1.0;
3297
3298 if (trylock (__func__)) {
3299 goto done;
3300 }
3301
3302 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3303 float w = p->pagebox.x1 / cols;
3304 float h = p->pagebox.y1;
3305 if (h > maxh) {
3306 maxh = h;
3307 ph = h;
3308 if (state.fitmodel != FitProportional) pw = w;
3309 }
3310 if ((state.fitmodel == FitProportional) && w > pw) pw = w;
3311 }
3312
3313 zoom = (((winh / ph) * pw) + dw) / winw;
3314 unlock (__func__);
3315 done:
3316 ret_v = caml_copy_double ((double) zoom);
3317 CAMLreturn (ret_v);
3318 }
3319
3320 value ml_getmaxw (value unit_v);
3321 value ml_getmaxw (value unit_v)
3322 {
3323 CAMLparam1 (unit_v);
3324 CAMLlocal1 (ret_v);
3325 int i;
3326 float maxw = -1.;
3327 struct pagedim *p;
3328
3329 if (trylock (__func__)) {
3330 goto done;
3331 }
3332
3333 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3334 float w = p->pagebox.x1;
3335 maxw = fz_max (maxw, w);
3336 }
3337
3338 unlock (__func__);
3339 done:
3340 ret_v = caml_copy_double ((double) maxw);
3341 CAMLreturn (ret_v);
3342 }
3343
3344 value ml_draw_string (value pt_v, value x_v,
3345 value y_v, value string_v);
3346 value ml_draw_string (value pt_v, value x_v,
3347 value y_v, value string_v)
3348 {
3349 CAMLparam4 (pt_v, x_v, y_v, string_v);
3350 CAMLlocal1 (ret_v);
3351 int pt = Int_val(pt_v);
3352 int x = Int_val (x_v);
3353 int y = Int_val (y_v);
3354 float w;
3355
3356 w = draw_string (state.face, pt, x, y, String_val (string_v));
3357 ret_v = caml_copy_double (w);
3358 CAMLreturn (ret_v);
3359 }
3360
3361 value ml_measure_string (value pt_v, value string_v);
3362 value ml_measure_string (value pt_v, value string_v)
3363 {
3364 CAMLparam2 (pt_v, string_v);
3365 CAMLlocal1 (ret_v);
3366 int pt = Int_val (pt_v);
3367 double w;
3368
3369 w = (double) measure_string (state.face, pt, String_val (string_v));
3370 ret_v = caml_copy_double (w);
3371 CAMLreturn (ret_v);
3372 }
3373
3374 value ml_getpagebox (value opaque_v);
3375 value ml_getpagebox (value opaque_v)
3376 {
3377 CAMLparam1 (opaque_v);
3378 CAMLlocal1 (ret_v);
3379 fz_rect rect;
3380 fz_irect bbox;
3381 fz_device *dev;
3382 char *s = String_val (opaque_v);
3383 struct page *page = parse_pointer (__func__, s);
3384
3385 ret_v = caml_alloc_tuple (4);
3386 dev = fz_new_bbox_device (state.ctx, &rect);
3387
3388 fz_run_page (state.ctx, page->fzpage, dev, pagectm (page), NULL);
3389
3390 fz_close_device (state.ctx, dev);
3391 fz_drop_device (state.ctx, dev);
3392 bbox = fz_round_rect (rect);
3393 Field (ret_v, 0) = Val_int (bbox.x0);
3394 Field (ret_v, 1) = Val_int (bbox.y0);
3395 Field (ret_v, 2) = Val_int (bbox.x1);
3396 Field (ret_v, 3) = Val_int (bbox.y1);
3397
3398 CAMLreturn (ret_v);
3399 }
3400
3401 void ml_setaalevel (value level_v);
3402 void ml_setaalevel (value level_v)
3403 {
3404 CAMLparam1 (level_v);
3405
3406 state.aalevel = Int_val (level_v);
3407 CAMLreturn0;
3408 }
3409
3410 value ml_keysymtoutf8 (value keysym_v);
3411 #ifndef CIDER
3412 value ml_keysymtoutf8 (value keysym_v)
3413 {
3414 CAMLparam1 (keysym_v);
3415 CAMLlocal1 (str_v);
3416 KeySym keysym = Int_val (keysym_v);
3417 Rune rune;
3418 extern long keysym2ucs (KeySym);
3419 int len;
3420 char buf[5];
3421
3422 rune = (Rune) keysym2ucs (keysym);
3423 len = fz_runetochar (buf, rune);
3424 buf[len] = 0;
3425 str_v = caml_copy_string (buf);
3426 CAMLreturn (str_v);
3427 }
3428 #else
3429 value ml_keysymtoutf8 (value keysym_v)
3430 {
3431 CAMLparam1 (keysym_v);
3432 CAMLlocal1 (str_v);
3433 long ucs = Long_val (keysym_v);
3434 int len;
3435 char buf[5];
3436
3437 len = fz_runetochar (buf, (int) ucs);
3438 buf[len] = 0;
3439 str_v = caml_copy_string (buf);
3440 CAMLreturn (str_v);
3441 }
3442 #endif
3443
3444 enum { piunknown, pilinux, pimacos, pibsd };
3445
3446 value ml_platform (value unit_v);
3447 value ml_platform (value unit_v)
3448 {
3449 CAMLparam1 (unit_v);
3450 CAMLlocal2 (tup_v, arr_v);
3451 int platid = piunknown;
3452 struct utsname buf;
3453
3454 #if defined __linux__
3455 platid = pilinux;
3456 #elif defined __DragonFly__ || defined __FreeBSD__
3457 || defined __OpenBSD__ || defined __NetBSD__
3458 platid = pibsd;
3459 #elif defined __APPLE__
3460 platid = pimacos;
3461 #endif
3462 if (uname (&buf)) err (1, "uname");
3463
3464 tup_v = caml_alloc_tuple (2);
3465 {
3466 char const *sar[] = {
3467 buf.sysname,
3468 buf.release,
3469 buf.version,
3470 buf.machine,
3471 NULL
3472 };
3473 arr_v = caml_copy_string_array (sar);
3474 }
3475 Field (tup_v, 0) = Val_int (platid);
3476 Field (tup_v, 1) = arr_v;
3477 CAMLreturn (tup_v);
3478 }
3479
3480 void ml_cloexec (value fd_v);
3481 void ml_cloexec (value fd_v)
3482 {
3483 CAMLparam1 (fd_v);
3484 int fd = Int_val (fd_v);
3485
3486 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3487 uerror ("fcntl", Nothing);
3488 }
3489 CAMLreturn0;
3490 }
3491
3492 value ml_getpbo (value w_v, value h_v, value cs_v);
3493 value ml_getpbo (value w_v, value h_v, value cs_v)
3494 {
3495 CAMLparam2 (w_v, h_v);
3496 CAMLlocal1 (ret_v);
3497 struct bo *pbo;
3498 int w = Int_val (w_v);
3499 int h = Int_val (h_v);
3500 int cs = Int_val (cs_v);
3501
3502 if (state.bo_usable) {
3503 pbo = calloc (sizeof (*pbo), 1);
3504 if (!pbo) {
3505 err (1, "calloc pbo");
3506 }
3507
3508 switch (cs) {
3509 case 0:
3510 case 1:
3511 pbo->size = w*h*4;
3512 break;
3513 case 2:
3514 pbo->size = w*h*2;
3515 break;
3516 default:
3517 errx (1, "%s: invalid colorspace %d", __func__, cs);
3518 }
3519
3520 state.glGenBuffersARB (1, &pbo->id);
3521 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3522 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, (GLsizei) pbo->size,
3523 NULL, GL_STREAM_DRAW);
3524 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3525 GL_READ_WRITE);
3526 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3527 if (!pbo->ptr) {
3528 printd ("emsg glMapBufferARB failed: %#x", glGetError ());
3529 state.glDeleteBuffersARB (1, &pbo->id);
3530 free (pbo);
3531 ret_v = caml_copy_string ("0");
3532 }
3533 else {
3534 int res;
3535 char *s;
3536
3537 res = snprintf (NULL, 0, "%" PRIxPTR, (uintptr_t) pbo);
3538 if (res < 0) {
3539 err (1, "snprintf %" PRIxPTR " failed", (uintptr_t) pbo);
3540 }
3541 s = malloc (res+1);
3542 if (!s) {
3543 err (1, "malloc %d bytes failed", res+1);
3544 }
3545 res = sprintf (s, "%" PRIxPTR, (uintptr_t) pbo);
3546 if (res < 0) {
3547 err (1, "sprintf %" PRIxPTR " failed", (uintptr_t) pbo);
3548 }
3549 ret_v = caml_copy_string (s);
3550 free (s);
3551 }
3552 }
3553 else {
3554 ret_v = caml_copy_string ("0");
3555 }
3556 CAMLreturn (ret_v);
3557 }
3558
3559 void ml_freepbo (value s_v);
3560 void ml_freepbo (value s_v)
3561 {
3562 CAMLparam1 (s_v);
3563 char *s = String_val (s_v);
3564 struct tile *tile = parse_pointer (__func__, s);
3565
3566 if (tile->pbo) {
3567 state.glDeleteBuffersARB (1, &tile->pbo->id);
3568 tile->pbo->id = -1;
3569 tile->pbo->ptr = NULL;
3570 tile->pbo->size = -1;
3571 }
3572 CAMLreturn0;
3573 }
3574
3575 void ml_unmappbo (value s_v);
3576 void ml_unmappbo (value s_v)
3577 {
3578 CAMLparam1 (s_v);
3579 char *s = String_val (s_v);
3580 struct tile *tile = parse_pointer (__func__, s);
3581
3582 if (tile->pbo) {
3583 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3584 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3585 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3586 }
3587 tile->pbo->ptr = NULL;
3588 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3589 }
3590 CAMLreturn0;
3591 }
3592
3593 static void setuppbo (void)
3594 {
3595 extern void (*wsigladdr (const char *name)) (void);
3596 #pragma GCC diagnostic push
3597 #ifdef __clang__
3598 #pragma GCC diagnostic ignored "-Wbad-function-cast"
3599 #endif
3600 #define GPA(n) (*(uintptr_t *) &state.n = (uintptr_t) wsigladdr (#n))
3601 state.bo_usable = GPA (glBindBufferARB)
3602 && GPA (glUnmapBufferARB)
3603 && GPA (glMapBufferARB)
3604 && GPA (glBufferDataARB)
3605 && GPA (glGenBuffersARB)
3606 && GPA (glDeleteBuffersARB);
3607 #undef GPA
3608 #pragma GCC diagnostic pop
3609 }
3610
3611 value ml_bo_usable (void);
3612 value ml_bo_usable (void)
3613 {
3614 return Val_bool (state.bo_usable);
3615 }
3616
3617 value ml_unproject (value ptr_v, value x_v, value y_v);
3618 value ml_unproject (value ptr_v, value x_v, value y_v)
3619 {
3620 CAMLparam3 (ptr_v, x_v, y_v);
3621 CAMLlocal2 (ret_v, tup_v);
3622 struct page *page;
3623 char *s = String_val (ptr_v);
3624 int x = Int_val (x_v), y = Int_val (y_v);
3625 struct pagedim *pdim;
3626 fz_point p;
3627
3628 page = parse_pointer (__func__, s);
3629 pdim = &state.pagedims[page->pdimno];
3630
3631 ret_v = Val_int (0);
3632 if (trylock (__func__)) {
3633 goto done;
3634 }
3635
3636 p.x = x + pdim->bounds.x0;
3637 p.y = y + pdim->bounds.y0;
3638
3639 p = fz_transform_point (p, fz_invert_matrix (fz_concat (pdim->tctm,
3640 pdim->ctm)));
3641
3642 tup_v = caml_alloc_tuple (2);
3643 ret_v = caml_alloc_small (1, 1);
3644 Field (tup_v, 0) = Val_int (p.x);
3645 Field (tup_v, 1) = Val_int (p.y);
3646 Field (ret_v, 0) = tup_v;
3647
3648 unlock (__func__);
3649 done:
3650 CAMLreturn (ret_v);
3651 }
3652
3653 value ml_project (value ptr_v, value pageno_v, value pdimno_v,
3654 value x_v, value y_v);
3655 value ml_project (value ptr_v, value pageno_v, value pdimno_v,
3656 value x_v, value y_v)
3657 {
3658 CAMLparam5 (ptr_v, pageno_v, pdimno_v, x_v, y_v);
3659 CAMLlocal1 (ret_v);
3660 struct page *page;
3661 char *s = String_val (ptr_v);
3662 int pageno = Int_val (pageno_v);
3663 int pdimno = Int_val (pdimno_v);
3664 float x = (float) Double_val (x_v), y = (float) Double_val (y_v);
3665 struct pagedim *pdim;
3666 fz_point p;
3667 fz_matrix ctm;
3668
3669 ret_v = Val_int (0);
3670 lock (__func__);
3671
3672 if (!*s) {
3673 page = loadpage (pageno, pdimno);
3674 }
3675 else {
3676 page = parse_pointer (__func__, s);
3677 }
3678 pdim = &state.pagedims[pdimno];
3679
3680 if (pdf_specifics (state.ctx, state.doc)) {
3681 trimctm (pdf_page_from_fz_page (state.ctx, page->fzpage), page->pdimno);
3682 ctm = state.pagedims[page->pdimno].tctm;
3683 }
3684 else {
3685 ctm = fz_identity;
3686 }
3687 p.x = x + pdim->bounds.x0;
3688 p.y = y + pdim->bounds.y0;
3689
3690 ctm = fz_concat (pdim->tctm, pdim->ctm);
3691 p = fz_transform_point (p, ctm);
3692
3693 ret_v = caml_alloc_tuple (2);
3694 Field (ret_v, 0) = caml_copy_double ((double) p.x);
3695 Field (ret_v, 1) = caml_copy_double ((double) p.y);
3696
3697 if (!*s) {
3698 freepage (page);
3699 }
3700 unlock (__func__);
3701 CAMLreturn (ret_v);
3702 }
3703
3704 void ml_addannot (value ptr_v, value x_v, value y_v, value contents_v);
3705 void ml_addannot (value ptr_v, value x_v, value y_v, value contents_v)
3706 {
3707 CAMLparam4 (ptr_v, x_v, y_v, contents_v);
3708 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
3709
3710 if (pdf) {
3711 pdf_annot *annot;
3712 struct page *page;
3713 fz_rect r;
3714 char *s = String_val (ptr_v);
3715
3716 page = parse_pointer (__func__, s);
3717 annot = pdf_create_annot (state.ctx,
3718 pdf_page_from_fz_page (state.ctx,
3719 page->fzpage),
3720 PDF_ANNOT_TEXT);
3721 r.x0 = Int_val (x_v) - 10;
3722 r.y0 = Int_val (y_v) - 10;
3723 r.x1 = r.x0 + 20;
3724 r.y1 = r.y0 + 20;
3725 pdf_set_annot_contents (state.ctx, annot, String_val (contents_v));
3726 pdf_set_annot_rect (state.ctx, annot, r);
3727
3728 state.dirty = 1;
3729 }
3730 CAMLreturn0;
3731 }
3732
3733 void ml_delannot (value ptr_v, value n_v);
3734 void ml_delannot (value ptr_v, value n_v)
3735 {
3736 CAMLparam2 (ptr_v, n_v);
3737 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
3738
3739 if (pdf) {
3740 struct page *page;
3741 char *s = String_val (ptr_v);
3742 struct slink *slink;
3743
3744 page = parse_pointer (__func__, s);
3745 slink = &page->slinks[Int_val (n_v)];
3746 pdf_delete_annot (state.ctx,
3747 pdf_page_from_fz_page (state.ctx, page->fzpage),
3748 (pdf_annot *) slink->u.annot);
3749 state.dirty = 1;
3750 }
3751 CAMLreturn0;
3752 }
3753
3754 void ml_modannot (value ptr_v, value n_v, value str_v);
3755 void ml_modannot (value ptr_v, value n_v, value str_v)
3756 {
3757 CAMLparam3 (ptr_v, n_v, str_v);
3758 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
3759
3760 if (pdf) {
3761 struct page *page;
3762 char *s = String_val (ptr_v);
3763 struct slink *slink;
3764
3765 page = parse_pointer (__func__, s);
3766 slink = &page->slinks[Int_val (n_v)];
3767 pdf_set_annot_contents (state.ctx, (pdf_annot *) slink->u.annot,
3768 String_val (str_v));
3769 state.dirty = 1;
3770 }
3771 CAMLreturn0;
3772 }
3773
3774 value ml_hasunsavedchanges (void);
3775 value ml_hasunsavedchanges (void)
3776 {
3777 return Val_bool (state.dirty);
3778 }
3779
3780 void ml_savedoc (value path_v);
3781 void ml_savedoc (value path_v)
3782 {
3783 CAMLparam1 (path_v);
3784 pdf_document *pdf = pdf_specifics (state.ctx, state.doc);
3785
3786 if (pdf) {
3787 pdf_save_document (state.ctx, pdf, String_val (path_v), NULL);
3788 }
3789 CAMLreturn0;
3790 }
3791
3792 static void makestippletex (void)
3793 {
3794 const char pixels[] = "\xff\xff\0\0";
3795 glGenTextures (1, &state.stid);
3796 glBindTexture (GL_TEXTURE_1D, state.stid);
3797 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
3798 glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
3799 glTexImage1D (
3800 GL_TEXTURE_1D,
3801 0,
3802 GL_ALPHA,
3803 4,
3804 0,
3805 GL_ALPHA,
3806 GL_UNSIGNED_BYTE,
3807 pixels
3808 );
3809 }
3810
3811 value ml_fz_version (void);
3812 value ml_fz_version (void)
3813 {
3814 return caml_copy_string (FZ_VERSION);
3815 }
3816
3817 value ml_llpp_version (void);
3818 value ml_llpp_version (void)
3819 {
3820 extern char llpp_version[];
3821 return caml_copy_string (llpp_version);
3822 }
3823
3824 void ml_init (value csock_v, value params_v);
3825 void ml_init (value csock_v, value params_v)
3826 {
3827 CAMLparam2 (csock_v, params_v);
3828 CAMLlocal2 (trim_v, fuzz_v);
3829 int ret;
3830 int texcount;
3831 char *fontpath;
3832 int colorspace;
3833 int mustoresize;
3834
3835 state.csock = Int_val (csock_v);
3836 state.rotate = Int_val (Field (params_v, 0));
3837 state.fitmodel = Int_val (Field (params_v, 1));
3838 trim_v = Field (params_v, 2);
3839 texcount = Int_val (Field (params_v, 3));
3840 state.sliceheight = Int_val (Field (params_v, 4));
3841 mustoresize = Int_val (Field (params_v, 5));
3842 colorspace = Int_val (Field (params_v, 6));
3843 fontpath = String_val (Field (params_v, 7));
3844
3845 #ifdef CIDER
3846 state.utf8cs = 1;
3847 #else
3848 /* http://www.cl.cam.ac.uk/~mgk25/unicode.html */
3849 if (setlocale (LC_CTYPE, "")) {
3850 const char *cset = nl_langinfo (CODESET);
3851 state.utf8cs = !strcmp (cset, "UTF-8");
3852 }
3853 else {
3854 printd ("emsg setlocale: %d:%s", errno, strerror (errno));
3855 }
3856 #endif
3857
3858 if (caml_string_length (Field (params_v, 8)) > 0) {
3859 state.trimcachepath = ystrdup (String_val (Field (params_v, 8)));
3860
3861 if (!state.trimcachepath) {
3862 printd ("emsg failed to strdup trimcachepath: %d:%s",
3863 errno, strerror (errno));
3864 }
3865 }
3866
3867 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3868 fz_register_document_handlers (state.ctx);
3869
3870 state.trimmargins = Bool_val (Field (trim_v, 0));
3871 fuzz_v = Field (trim_v, 1);
3872 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3873 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3874 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3875 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3876
3877 set_tex_params (colorspace);
3878
3879 if (*fontpath) {
3880 state.face = load_font (fontpath);
3881 }
3882 else {
3883 int len;
3884 const unsigned char *data;
3885
3886 data = pdf_lookup_substitute_font (state.ctx, 0, 0, 0, 0, &len);
3887 state.face = load_builtin_font (data, len);
3888 }
3889 if (!state.face) _exit (1);
3890
3891 realloctexts (texcount);
3892 setuppbo ();
3893 makestippletex ();
3894
3895 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
3896 if (ret) {
3897 errx (1, "pthread_create: %s", strerror (ret));
3898 }
3899
3900 CAMLreturn0;
3901 }
3902
3903 #if FIXME || !FIXME
3904 static void UNUSED_ATTR NO_OPTIMIZE_ATTR refmacs (void) {}
3905 #endif
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