1 /* lot's of code c&p-ed directly from mupdf */
3 #define WIN32_LEAN_AND_MEAN
7 #pragma warning (disable:4244)
8 #pragma warning (disable:4996)
9 #pragma warning (disable:4995)
17 static void __declspec (noreturn
) err (int exitcode
, const char *fmt
, ...)
24 vfprintf (stderr
, fmt
, ap
);
26 fprintf (stderr
, ": %s\n", strerror (errno
));
29 static void __declspec (noreturn
) errx (int exitcode
, const char *fmt
, ...)
36 vfprintf (stderr
, fmt
, ap
);
41 static void __declspec (noreturn
) sockerr (int exitcode
, const char *fmt
, ...)
48 vfprintf (stderr
, fmt
, ap
);
50 fprintf (stderr
, ": wsaerror %lx\n", WSAGetLastError ());
69 #include <sys/types.h>
70 #include <sys/socket.h>
71 #include <sys/select.h>
75 #include <OpenGL/gl.h>
80 #ifndef GL_TEXTURE_RECTANGLE_ARB
81 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
84 #include <caml/fail.h>
85 #include <caml/alloc.h>
86 #include <caml/memory.h>
87 #include <caml/unixsupport.h>
93 #define lprintf printf
98 #define ARSERT(cond) for (;;) { \
100 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
116 struct pagedim
*pagedim
;
118 struct slice slices
[];
133 struct pagedim
*pagedims
;
137 fz_glyphcache
*cache
;
165 static CRITICAL_SECTION critsec
;
167 static void lock (void *unused
)
170 EnterCriticalSection (&critsec
);
173 static void unlock (void *unused
)
176 LeaveCriticalSection (&critsec
);
179 static int trylock (void *unused
)
181 return TryEnterCriticalSection (&critsec
) == 0;
184 static pthread_mutex_t mutex
= PTHREAD_MUTEX_INITIALIZER
;
186 static void lock (const char *cap
)
188 int ret
= pthread_mutex_lock (&mutex
);
190 errx (1, "%s: pthread_mutex_lock: %s", cap
, strerror (ret
));
194 static void unlock (const char *cap
)
196 int ret
= pthread_mutex_unlock (&mutex
);
198 errx (1, "%s: pthread_mutex_unlock: %s", cap
, strerror (ret
));
202 static int trylock (const char *cap
)
204 int ret
= pthread_mutex_trylock (&mutex
);
206 if (ret
&& ret
!= EBUSY
) {
207 errx (1, "%s: pthread_mutex_trylock: %s", cap
, strerror (ret
));
213 static void *parse_pointer (const char *cap
, const char *s
)
218 ret
= sscanf (s
, "%p", &ptr
);
220 errx (1, "%s: cannot parse pointer in `%s'", cap
, s
);
225 static int hasdata (int sock
)
234 n
= select (sock
+ 1, &s
, NULL
, NULL
, &tv
);
235 if (n
== 0) return 0;
236 if (n
== 1) return 1;
237 sockerr (1, "hasdata: select error ret=%d", n
);
240 static double now (void)
244 if (gettimeofday (&tv
, NULL
)) {
245 err (1, "gettimeofday");
247 return tv
.tv_sec
+ tv
.tv_usec
*1e-6;
250 static void readdata (int fd
, char *p
, int size
)
254 n
= recv (fd
, p
, size
, 0);
256 if (!n
) errx (1, "EOF while reading");
257 sockerr (1, "recv (req %d, ret %zd)", size
, n
);
261 static void writedata (int fd
, char *p
, int size
)
266 buf
[0] = (size
>> 24) & 0xff;
267 buf
[1] = (size
>> 16) & 0xff;
268 buf
[2] = (size
>> 8) & 0xff;
269 buf
[3] = (size
>> 0) & 0xff;
271 n
= send (fd
, buf
, 4, 0);
273 if (!n
) errx (1, "EOF while writing length");
274 sockerr (1, "send %zd", n
);
277 n
= send (fd
, p
, size
, 0);
279 if (!n
) errx (1, "EOF while writing data");
280 sockerr (1, "send (req %d, ret %zd)", size
, n
);
286 __attribute__ ((format (printf
, 2, 3)))
288 printd (int fd
, const char *fmt
, ...)
295 len
= vsnprintf (buf
, sizeof (buf
), fmt
, ap
);
297 writedata (fd
, buf
, len
);
300 static void die (fz_error error
)
302 fz_catch (error
, "aborting");
304 pdf_freexref (state
.xref
);
308 static void openxref (char *filename
)
314 fd
= open (filename
, O_BINARY
| O_RDONLY
, 0666);
316 die (fz_throw ("cannot open file '%s'", filename
));
318 file
= fz_openfile (fd
);
319 error
= pdf_openxrefwithstream (&state
.xref
, file
, NULL
);
321 die (fz_rethrow(error
, "cannot open document '%s'", filename
));
322 fz_dropstream (file
);
324 if (pdf_needspassword (state
.xref
)) {
325 die (fz_throw ("password protected"));
328 error
= pdf_loadpagetree (state
.xref
);
330 die (fz_throw ("cannot load page tree"));
333 state
.pagecount
= pdf_getpagecount (state
.xref
);
334 state
.pagetbl
= stat_alloc (state
.pagecount
* sizeof (*state
.pagetbl
));
337 static int readlen (int fd
)
342 n
= recv (fd
, p
, 4, 0);
344 if (!n
) errx (1, "EOF while reading length");
345 sockerr (1, "recv %zd", n
);
348 return (p
[0] << 24) | (p
[1] << 16) | (p
[2] << 8) | p
[3];
351 static void freepage (struct page
*page
)
356 fz_droppixmap (page
->pixmap
);
357 for (p
= state
.pages
; p
; p
= p
->prev
) {
358 if (p
->prev
== page
) {
359 p
->prev
= page
->prev
;
363 for (i
= 0; i
< page
->slicecount
; ++i
) {
364 struct slice
*s
= &page
->slices
[i
];
365 if (s
->texindex
!= -1) {
366 if (state
.texowners
[s
->texindex
].slice
== s
) {
367 state
.texowners
[s
->texindex
].slice
= NULL
;
368 ARSERT (state
.texowners
[s
->texindex
].w
== s
->w
);
369 ARSERT (state
.texowners
[s
->texindex
].h
>= s
->h
);
374 fz_freetextspan (page
->text
);
376 if (page
->drawpage
) {
377 pdf_freepage (page
->drawpage
);
383 static void subdivide (struct page
*p
)
386 int h
= p
->pixmap
->h
;
387 int th
= MIN (h
, state
.sliceheight
);
389 for (i
= 0; i
< p
->slicecount
; ++i
) {
390 struct slice
*s
= &p
->slices
[i
];
398 static void *render (int pageno
, int pindex
)
407 struct pagedim
*pagedim
;
410 printd (state
.sock
, "V rendering %d", pageno
);
412 pagedim
= &state
.pagedims
[pindex
];
413 slicecount
= (pagedim
->bbox
.y1
- pagedim
->bbox
.y0
414 + state
.sliceheight
- 1) / state
.sliceheight
;
415 slicecount
+= slicecount
== 0;
417 page
= calloc (sizeof (*page
)
418 + (slicecount
* sizeof (struct slice
)), 1);
420 err (1, "calloc page %d\n", pageno
);
422 page
->slicecount
= slicecount
;
423 page
->prev
= state
.pages
;
426 pageobj
= pdf_getpageobject (state
.xref
, pageno
);
428 die (fz_throw ("cannot retrieve info from page %d", pageno
));
430 error
= pdf_loadpage (&drawpage
, state
.xref
, pageobj
);
434 page
->pixmap
= fz_newpixmapwithrect (fz_devicergb
, pagedim
->bbox
);
435 fz_clearpixmap (page
->pixmap
, 0xFF);
437 idev
= fz_newdrawdevice (state
.cache
, page
->pixmap
);
439 die (fz_throw ("fz_newdrawdevice failed"));
440 error
= pdf_runpage (state
.xref
, drawpage
, idev
, pagedim
->ctm
);
441 fz_freedevice (idev
);
443 page
->drawpage
= drawpage
;
444 page
->pagedim
= pagedim
;
445 page
->pageno
= pageno
;
449 if (!state
.lotsamemory
) {
450 pdf_agestore(state
.xref
->store
, 3);
453 printd (state
.sock
, "V rendering %d took %f sec", pageno
, end
- start
);
457 static void initpdims (void)
463 for (pageno
= 0; pageno
< state
.pagecount
; ++pageno
) {
467 fz_obj
*obj
, *pageobj
;
469 pageobj
= pdf_getpageobject (state
.xref
, pageno
+ 1);
471 obj
= fz_dictgets (pageobj
, "CropBox");
472 if (!fz_isarray (obj
)) {
473 obj
= fz_dictgets (pageobj
, "MediaBox");
474 if (!fz_isarray (obj
)) {
475 die (fz_throw ("cannot find page bounds %d (%d Rd)",
476 fz_tonum (pageobj
), fz_togen (pageobj
)));
479 box
= pdf_torect (obj
);
481 obj
= fz_dictgets (pageobj
, "Rotate");
482 if (fz_isint (obj
)) {
483 rotate
= fz_toint (obj
);
488 rotate
+= state
.rotate
;
490 state
.pagetbl
[pageno
] =
491 fz_tonum (pdf_getpageref (state
.xref
, pageno
+ 1));
493 p
= &state
.pagedims
[state
.pagedimcount
- 1];
494 if ((state
.pagedimcount
== 0)
495 || (p
->rotate
!= rotate
|| memcmp (&p
->box
, &box
, sizeof (box
)))) {
498 size
= (state
.pagedimcount
+ 1) * sizeof (*state
.pagedims
);
499 state
.pagedims
= realloc (state
.pagedims
, size
);
500 if (!state
.pagedims
) {
501 err (1, "realloc pagedims to %zu (%d elems)",
502 size
, state
.pagedimcount
+ 1);
504 p
= &state
.pagedims
[state
.pagedimcount
++];
511 printd (state
.sock
, "T Processed %d pages in %f seconds",
512 state
.pagecount
, end
- start
);
515 static void layout (void)
521 struct pagedim
*p
= state
.pagedims
;
524 for (pindex
= 0; pindex
< state
.pagedimcount
; ++pindex
, ++p
) {
525 box
.x0
= MIN (p
->box
.x0
, p
->box
.x1
);
526 box
.y0
= MIN (p
->box
.y0
, p
->box
.y1
);
527 box
.x1
= MAX (p
->box
.x0
, p
->box
.x1
);
528 box
.y1
= MAX (p
->box
.y0
, p
->box
.y1
);
531 ctm
= fz_concat (ctm
, fz_translate (0, -box
.y1
));
532 ctm
= fz_concat (ctm
, fz_rotate (p
->rotate
));
533 box2
= fz_transformrect (ctm
, box
);
534 w
= box2
.x1
- box2
.x0
;
536 zoom
= (state
.w
/ w
);
538 ctm
= fz_concat (ctm
, fz_translate (0, -box
.y1
));
539 ctm
= fz_concat (ctm
, fz_scale (zoom
, -zoom
));
540 memcpy (&p
->ctm1
, &ctm
, sizeof (ctm
));
541 ctm
= fz_concat (ctm
, fz_rotate (p
->rotate
));
542 p
->bbox
= fz_roundrect (fz_transformrect (ctm
, box
));
543 memcpy (&p
->ctm
, &ctm
, sizeof (ctm
));
546 while (p
-- != state
.pagedims
) {
547 printd (state
.sock
, "l %d %d %d",
548 p
->pageno
, p
->bbox
.x1
- p
->bbox
.x0
, p
->bbox
.y1
- p
->bbox
.y0
);
552 static void recurse_outline (pdf_outline
*outline
, int level
)
560 if (!outline
->link
) goto next
;
562 obj
= outline
->link
->dest
;
563 if (fz_isindirect (obj
)) {
564 num
= fz_tonum (obj
);
566 for (i
= 0; i
< state
.pagecount
; ++i
) {
567 if (state
.pagetbl
[i
] == num
) {
573 else if (fz_isarray (obj
)) {
576 obj2
= fz_arrayget (obj
, 0);
577 if (fz_isint (obj2
)) {
578 pageno
= fz_toint (obj2
);
581 num
= fz_tonum (obj2
);
582 for (i
= 0; i
< state
.pagecount
; ++i
) {
583 if (state
.pagetbl
[i
] == num
) {
590 if (fz_arraylen (obj
) > 3) {
592 struct pagedim
*pagedim
= state
.pagedims
;
594 for (i
= 0; i
< state
.pagedimcount
; ++i
) {
595 if (state
.pagedims
[i
].pageno
> pageno
)
597 pagedim
= &state
.pagedims
[i
];
600 p
.x
= fz_toint (fz_arrayget (obj
, 2));
601 p
.y
= fz_toint (fz_arrayget (obj
, 3));
602 p
= fz_transformpoint (pagedim
->ctm
, p
);
607 lprintf ("%*c%s %d\n", level
, ' ', outline
->title
, pageno
);
608 printd (state
.sock
, "o %d %d %d %s",
609 level
, pageno
, top
, outline
->title
);
611 if (outline
->child
) {
612 recurse_outline (outline
->child
, level
+ 1);
614 outline
= outline
->next
;
618 static void process_outline (void)
620 pdf_outline
*outline
;
622 outline
= pdf_loadoutline (state
.xref
);
624 recurse_outline (outline
, 0);
625 pdf_freeoutline (outline
);
629 static int comparespans (const void *l
, const void *r
)
631 fz_textspan
const *const*ls
= l
;
632 fz_textspan
const *const*rs
= r
;
633 return (*ls
)->text
->bbox
.y0
- (*rs
)->text
->bbox
.y0
;
636 /* wishful thinking function */
637 static void search (regex_t
*re
, int pageno
, int y
, int forward
)
648 fz_textspan
*text
, *span
, **pspan
;
649 struct pagedim
*pdim
, *pdimprev
;
656 while (pageno
>= 0 && pageno
< state
.pagecount
&& !stop
) {
658 if (!state
.lotsamemory
) {
659 pdf_agestore(state
.xref
->store
, 3);
662 if (hasdata (state
.sock
)) {
663 printd (state
.sock
, "T attention requested aborting search at %d",
668 printd (state
.sock
, "T searching in page %d", pageno
);
672 for (i
= 0; i
< state
.pagedimcount
; ++i
) {
673 pdim
= &state
.pagedims
[i
];
674 if (pdim
->pageno
== pageno
) {
677 if (pdim
->pageno
> pageno
) {
686 pageobj
= pdf_getpageobject (state
.xref
, pageno
+ 1);
688 die (fz_throw ("cannot retrieve info from page %d", pageno
));
690 error
= pdf_loadpage (&drawpage
, state
.xref
, pageobj
);
694 ctm
= fz_rotate (pdim
->rotate
);
696 text
= fz_newtextspan ();
697 tdev
= fz_newtextdevice (text
);
698 error
= pdf_runpage (state
.xref
, drawpage
, tdev
, pdim
->ctm1
);
699 if (error
) die (error
);
700 fz_freedevice (tdev
);
703 for (span
= text
; span
; span
= span
->next
) {
706 pspan
= malloc (sizeof (void *) * nspans
);
708 err (1, "malloc span pointers %zu", sizeof (void *) * nspans
);
710 for (i
= 0, span
= text
; span
; span
= span
->next
, ++i
) {
713 qsort (pspan
, nspans
, sizeof (fz_textspan
*), comparespans
);
715 j
= forward
? 0 : nspans
- 1;
720 j
+= forward
? 1 : -1;
722 for (i
= 0; i
< MIN (span
->len
, (int) sizeof (buf
) - 1); ++i
) {
724 if (span
->text
[i
].bbox
.y0
< y
+ 1) {
729 if (span
->text
[i
].bbox
.y0
> y
- 1) {
733 if (span
->text
[i
].c
< 256) {
734 *p
++ = span
->text
[i
].c
;
745 ret
= regexec (re
, buf
, 1, &rm
, 0);
747 if (ret
!= REG_NOMATCH
) {
750 size
= regerror (ret
, re
, errbuf
, sizeof (errbuf
));
752 "T regexec error `%.*s'",
754 fz_freetextspan (text
);
755 pdf_freepage (drawpage
);
763 fz_point p1
, p2
, p3
, p4
;
765 xoff
= -pdim
->bbox
.x0
;
766 yoff
= -pdim
->bbox
.y0
;
768 sb
= &span
->text
[rm
.rm_so
].bbox
;
769 eb
= &span
->text
[rm
.rm_eo
- 1].bbox
;
780 p1
= fz_transformpoint (ctm
, p1
);
781 p2
= fz_transformpoint (ctm
, p2
);
782 p3
= fz_transformpoint (ctm
, p3
);
783 p4
= fz_transformpoint (ctm
, p4
);
786 printd (state
.sock
, "F %d %d %f %f %f %f %f %f %f %f",
788 p1
.x
+ xoff
, p1
.y
+ yoff
,
789 p2
.x
+ xoff
, p2
.y
+ yoff
,
790 p3
.x
+ xoff
, p3
.y
+ yoff
,
791 p4
.x
+ xoff
, p4
.y
+ yoff
);
793 printd (state
.sock
, "T found at %d `%.*s' in %f sec",
794 pageno
, rm
.rm_eo
- rm
.rm_so
, &buf
[rm
.rm_so
],
798 printd (state
.sock
, "R %d %d %f %f %f %f %f %f %f %f",
800 p1
.x
+ xoff
, p1
.y
+ yoff
,
801 p2
.x
+ xoff
, p2
.y
+ yoff
,
802 p3
.x
+ xoff
, p3
.y
+ yoff
,
803 p4
.x
+ xoff
, p4
.y
+ yoff
);
816 fz_freetextspan (text
);
817 pdf_freepage (drawpage
);
822 printd (state
.sock
, "T no matches %f sec", end
- start
);
824 printd (state
.sock
, "D");
833 mainloop (void *unused
)
836 int len
, ret
, oldlen
= 0;
839 len
= readlen (state
.sock
);
841 errx (1, "readlen returned 0");
844 if (oldlen
< len
+ 1) {
845 p
= realloc (p
, len
+ 1);
847 err (1, "realloc %d failed", len
+ 1);
851 readdata (state
.sock
, p
, len
);
854 if (!strncmp ("open", p
, 4)) {
856 char *filename
= p
+ 5;
861 obj
= fz_dictgets (state
.xref
->trailer
, "Info");
863 obj
= fz_dictgets (obj
, "Title");
865 printd (state
.sock
, "t %s", pdf_toutf8 (obj
));
869 else if (!strncmp ("free", p
, 4)) {
872 ret
= sscanf (p
+ 4, " %p", &ptr
);
874 errx (1, "malformed free `%.*s' ret=%d", len
, p
, ret
);
879 printd (state
.sock
, "d");
881 else if (!strncmp ("search", p
, 6)) {
882 int icase
, pageno
, y
, ret
, len2
, forward
;
886 ret
= sscanf (p
+ 6, " %d %d %d %d,%n",
887 &icase
, &pageno
, &y
, &forward
, &len2
);
889 errx (1, "malformed search `%s' ret=%d", p
, ret
);
892 pattern
= p
+ 6 + len2
;
893 ret
= regcomp (&re
, pattern
,
894 REG_EXTENDED
| (icase
? REG_ICASE
: 0));
899 size
= regerror (ret
, &re
, errbuf
, sizeof (errbuf
));
900 printd (state
.sock
, "T regcomp failed `%.*s'",
904 search (&re
, pageno
, y
, forward
);
908 else if (!strncmp ("geometry", p
, 8)) {
911 printd (state
.sock
, "c");
912 ret
= sscanf (p
+ 8, " %d %d", &w
, &h
);
914 errx (1, "malformed geometry `%.*s' ret=%d", len
, p
, ret
);
920 for (i
= 0; i
< state
.texcount
; ++i
) {
921 state
.texowners
[i
].slice
= NULL
;
928 printd (state
.sock
, "C %d", state
.pagecount
);
930 else if (!strncmp ("rotate", p
, 6)) {
933 printd (state
.sock
, "c");
934 ret
= sscanf (p
+ 6, " %f", &rotate
);
936 errx (1, "bad rotate line `%.*s' ret=%d", len
, p
, ret
);
938 state
.rotate
= rotate
;
940 state
.pagedimcount
= 0;
941 free (state
.pagedims
);
942 state
.pagedims
= NULL
;
947 printd (state
.sock
, "C %d", state
.pagecount
);
949 else if (!strncmp ("render", p
, 6)) {
950 int pageno
, pindex
, w
, h
, ret
;
953 ret
= sscanf (p
+ 6, " %d %d %d %d", &pageno
, &pindex
, &w
, &h
);
955 errx (1, "bad render line `%.*s' ret=%d", len
, p
, ret
);
958 page
= render (pageno
, pindex
);
959 printd (state
.sock
, "r %d %d %d %d %p\n",
966 else if (!strncmp ("interrupt", p
, 8)) {
967 printd (state
.sock
, "V interrupted");
970 errx (1, "unknown command %.*s", len
, p
);
976 static void upload2 (struct page
*page
, int slicenum
, const char *cap
)
981 struct slice
*slice
= &page
->slices
[slicenum
];
986 ARSERT (w
== slice
->w
);
987 if (slice
->texindex
!= -1
988 && state
.texowners
[slice
->texindex
].slice
== slice
) {
989 glBindTexture (GL_TEXTURE_RECTANGLE_ARB
, state
.texids
[slice
->texindex
]);
993 int index
= (state
.texindex
++ % state
.texcount
);
996 for (i
= 0; i
< slicenum
; ++i
) {
997 offset
+= w
* page
->slices
[i
].h
* 4;
1000 if (state
.texowners
[index
].w
== slice
->w
) {
1001 if (state
.texowners
[index
].h
>= slice
->h
) {
1005 state
.texowners
[index
].h
= slice
->h
;
1009 state
.texowners
[index
].h
= slice
->h
;
1012 state
.texowners
[index
].slice
= slice
;
1013 state
.texowners
[index
].w
= slice
->w
;
1014 slice
->texindex
= index
;
1016 glBindTexture (GL_TEXTURE_RECTANGLE_ARB
, state
.texids
[slice
->texindex
]);
1020 GLenum err
= glGetError ();
1021 if (err
!= GL_NO_ERROR
) {
1022 printf ("\033[0;31mERROR1 %d %d %#x\033[0m\n", w
, slice
->h
, err
);
1026 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB
,
1034 page
->pixmap
->samples
+ offset
1037 GLenum err
= glGetError ();
1038 if (err
!= GL_NO_ERROR
) {
1039 printf ("\033[0;31mERROR %d %d %#x\033[0m\n", w
, slice
->h
, err
);
1045 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB
,
1053 page
->pixmap
->samples
+ offset
1058 lprintf ("%s[%d] slice=%d(%d,%d) texid=%d %f sec\n",
1059 subimage
? "sub" : "img",
1060 page
->pageno
, slicenum
,
1062 state
.texids
[slice
->texindex
],
1067 CAMLprim value
ml_draw (value dispy_v
, value w_v
, value h_v
,
1068 value py_v
, value ptr_v
)
1070 CAMLparam5 (dispy_v
, w_v
, h_v
, py_v
, ptr_v
);
1071 int dispy
= Int_val (dispy_v
);
1072 int w
= Int_val (w_v
);
1073 int h
= Int_val (h_v
);
1074 int py
= Int_val (py_v
);
1075 char *s
= String_val (ptr_v
);
1081 if (trylock ("ml_draw")) {
1085 ret
= sscanf (s
, "%p", &ptr
);
1087 errx (1, "cannot parse pointer `%s'", s
);
1091 w
= page
->pixmap
->w
;
1093 ARSERT (h
>= 0 && "ml_draw wrong h");
1094 ARSERT (py
<= page
->pixmap
->h
&& "ml_draw wrong py");
1096 glEnable (GL_TEXTURE_RECTANGLE_ARB
);
1098 for (slicenum
= 0; slicenum
< page
->slicecount
; ++slicenum
) {
1099 struct slice
*slice
= &page
->slices
[slicenum
];
1100 if (slice
->h
> py
) {
1106 h
= MIN (state
.h
, h
);
1109 struct slice
*slice
= &page
->slices
[slicenum
];
1111 ARSERT (slicenum
< page
->slicecount
&& "ml_draw wrong slicenum");
1113 th
= MIN (h
, slice
->h
- py
);
1114 upload2 (page
, slicenum
, "upload");
1118 glTexCoord2i (0, py
);
1119 glVertex2i (0, dispy
);
1121 glTexCoord2i (w
, py
);
1122 glVertex2i (w
, dispy
);
1124 glTexCoord2i (w
, py
+th
);
1125 glVertex2i (w
, dispy
+ th
);
1127 glTexCoord2i (0, py
+th
);
1128 glVertex2i (0, dispy
+ th
);
1138 glDisable (GL_TEXTURE_RECTANGLE_ARB
);
1142 CAMLreturn (Val_unit
);
1145 static pdf_link
*getlink (struct page
*page
, int x
, int y
)
1151 p
.x
= x
+ page
->pixmap
->x
;
1152 p
.y
= y
+ page
->pixmap
->y
;
1154 ctm
= fz_invertmatrix (page
->pagedim
->ctm
);
1155 p
= fz_transformpoint (ctm
, p
);
1157 for (link
= page
->drawpage
->links
; link
; link
= link
->next
) {
1158 if (p
.x
>= link
->rect
.x0
&& p
.x
<= link
->rect
.x1
) {
1159 if (p
.y
>= link
->rect
.y0
&& p
.y
<= link
->rect
.y1
) {
1167 CAMLprim value
ml_highlightlinks (value ptr_v
, value yoff_v
)
1169 CAMLparam2 (ptr_v
, yoff_v
);
1172 int xoff
, yoff
= Int_val (yoff_v
);
1173 const char *s
= String_val (ptr_v
);
1175 if (trylock ("ml_highlightlinks")) {
1179 page
= parse_pointer ("ml_highlightlinks", s
);
1181 glPolygonMode (GL_FRONT_AND_BACK
, GL_LINE
);
1182 glEnable (GL_LINE_STIPPLE
);
1183 glLineStipple (0.5, 0xcccc);
1185 xoff
= -page
->pixmap
->x
;
1186 yoff
-= page
->pixmap
->y
;
1189 for (link
= page
->drawpage
->links
; link
; link
= link
->next
) {
1190 fz_point p1
, p2
, p3
, p4
;
1191 fz_matrix ctm
= page
->pagedim
->ctm
;
1193 p1
.x
= link
->rect
.x0
;
1194 p1
.y
= link
->rect
.y0
;
1196 p2
.x
= link
->rect
.x1
;
1197 p2
.y
= link
->rect
.y0
;
1199 p3
.x
= link
->rect
.x1
;
1200 p3
.y
= link
->rect
.y1
;
1202 p4
.x
= link
->rect
.x0
;
1203 p4
.y
= link
->rect
.y1
;
1205 p1
= fz_transformpoint (ctm
, p1
);
1206 p2
= fz_transformpoint (ctm
, p2
);
1207 p3
= fz_transformpoint (ctm
, p3
);
1208 p4
= fz_transformpoint (ctm
, p4
);
1210 switch (link
->kind
) {
1211 case PDF_LGOTO
: glColor3ub (255, 0, 0); break;
1212 case PDF_LURI
: glColor3ub (0, 0, 255); break;
1213 default: glColor3ub (0, 0, 0); break;
1216 glVertex2f (p1
.x
+ xoff
, p1
.y
+ yoff
);
1217 glVertex2f (p2
.x
+ xoff
, p2
.y
+ yoff
);
1218 glVertex2f (p3
.x
+ xoff
, p3
.y
+ yoff
);
1219 glVertex2f (p4
.x
+ xoff
, p4
.y
+ yoff
);
1223 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1224 glDisable (GL_LINE_STIPPLE
);
1225 unlock ("ml_highlightlinks");
1228 CAMLreturn (Val_unit
);
1231 CAMLprim value
ml_checklink (value ptr_v
, value x_v
, value y_v
)
1233 CAMLparam3 (ptr_v
, x_v
, y_v
);
1234 char *s
= String_val (ptr_v
);
1237 if (trylock ("ml_checklink")) {
1243 link
= getlink (parse_pointer ("ml_checklink", s
),
1244 Int_val (x_v
), Int_val (y_v
));
1250 if (link
->kind
== PDF_LURI
) {
1251 printd (state
.sock
, "T %s", fz_tostrbuf (link
->dest
));
1254 unlock ("ml_checklink");
1256 CAMLreturn (Val_bool (ret
));
1259 CAMLprim value
ml_getlink (value ptr_v
, value x_v
, value y_v
)
1261 CAMLparam3 (ptr_v
, x_v
, y_v
);
1262 CAMLlocal2 (ret_v
, tup_v
);
1265 char *s
= String_val (ptr_v
);
1267 ret_v
= Val_int (0);
1268 if (trylock ("ml_getlink")) {
1269 ret_v
= Val_int (0);
1273 page
= parse_pointer ("ml_getlink", s
);
1275 link
= getlink (page
, Int_val (x_v
), Int_val (y_v
));
1277 switch (link
->kind
) {
1285 obj
= fz_arrayget (link
->dest
, 0);
1286 if (fz_isindirect (obj
)) {
1287 pageno
= pdf_findpageobject (state
.xref
, obj
) - 1;
1289 else if (fz_isint (obj
)) {
1290 pageno
= fz_toint (obj
);
1293 if (fz_arraylen (link
->dest
) > 3) {
1294 p
.x
= fz_toint (fz_arrayget (link
->dest
, 2));
1295 p
.y
= fz_toint (fz_arrayget (link
->dest
, 3));
1296 p
= fz_transformpoint (page
->pagedim
->ctm
, p
);
1303 tup_v
= caml_alloc_tuple (2);
1304 ret_v
= caml_alloc_small (1, 1);
1305 Field (tup_v
, 0) = Val_int (pageno
);
1306 Field (tup_v
, 1) = Val_int (p
.y
);
1307 Field (ret_v
, 0) = tup_v
;
1312 printf ("%s\n", fz_tostrbuf (link
->dest
));
1313 tup_v
= caml_alloc_tuple (2);
1314 ret_v
= caml_alloc_small (1, 1);
1315 Field (tup_v
, 0) = Val_int (-1);
1316 Field (tup_v
, 1) = Val_int (0);
1317 Field (ret_v
, 0) = tup_v
;
1321 printd (state
.sock
, "T unhandled link kind %d", link
->kind
);
1325 unlock ("ml_getlink");
1331 CAMLprim value
ml_gettext (value ptr_v
, value rect_v
, value oy_v
, value rectsel_v
)
1333 CAMLparam4 (ptr_v
, rect_v
, oy_v
, rect_v
);
1338 char *s
= String_val (ptr_v
);
1339 int rectsel
= Bool_val (rectsel_v
);
1340 int i
, bx0
, bx1
, by0
, by1
, x0
, x1
, y0
, y1
, oy
;
1342 /* stop GCC from complaining about uninitialized variables */
1344 int rx0
= rx0
, rx1
= rx1
, ry0
= ry0
, ry1
= ry1
;
1346 int rx0
, rx1
, ry0
, ry1
;
1349 if (trylock ("ml_gettext")) {
1353 page
= parse_pointer ("ml_gettext", s
);
1355 oy
= Int_val (oy_v
);
1356 p1
.x
= Int_val (Field (rect_v
, 0));
1357 p1
.y
= Int_val (Field (rect_v
, 1));
1358 p2
.x
= Int_val (Field (rect_v
, 2));
1359 p2
.y
= Int_val (Field (rect_v
, 3));
1362 glEnable (GL_BLEND
);
1363 glPolygonMode (GL_FRONT_AND_BACK
, GL_LINE
);
1364 glBlendFunc (GL_DST_ALPHA
, GL_SRC_ALPHA
);
1365 glColor4f (0.0f
, 0.0f
, 0.0f
, 0.2f
);
1366 glRecti (p1
.x
, p1
.y
, p2
.x
, p2
.y
);
1367 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1368 glDisable (GL_BLEND
);
1371 ctm
= page
->pagedim
->ctm
;
1376 page
->text
= fz_newtextspan ();
1377 tdev
= fz_newtextdevice (page
->text
);
1378 error
= pdf_runpage (state
.xref
, page
->drawpage
, tdev
,
1379 page
->pagedim
->ctm
);
1380 if (error
) die (error
);
1381 fz_freedevice (tdev
);
1386 printf ("BBox %f %f %f %f\n", p1
.x
, p1
.y
, p2
.x
, p2
.y
);
1387 p1
.x
+= page
->pixmap
->x
;
1388 p1
.y
+= page
->pixmap
->y
;
1389 p2
.x
+= page
->pixmap
->x
;
1390 p2
.y
+= page
->pixmap
->y
;
1395 printf ("BBox %d %d %d %d %d %d\n", x0
, y0
, x1
, y1
, oy
, page
->pageno
);
1397 for (span
= page
->text
; span
; span
= span
->next
) {
1400 /* fz_debugtextspanxml (span); */
1401 for (i
= 0; i
< span
->len
; ++i
) {
1404 bx0
= span
->text
[i
].bbox
.x0
;
1405 bx1
= span
->text
[i
].bbox
.x1
;
1406 by0
= span
->text
[i
].bbox
.y0
+ oy
;
1407 by1
= span
->text
[i
].bbox
.y1
+ oy
;
1409 if ((bx1
>= x0
&& bx0
<= x1
&& by1
>= y0
&& by0
<= y1
)) {
1411 rx0
= bx0
- page
->pixmap
->x
;
1412 rx1
= bx1
- page
->pixmap
->x
;
1418 c
= span
->text
[i
].c
;
1420 if ((isprint (c
) && !isspace (c
))) {
1422 bx0
-= page
->pixmap
->x
;
1423 bx1
-= page
->pixmap
->x
;
1424 glEnable (GL_BLEND
);
1425 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1426 glBlendFunc (GL_DST_ALPHA
, GL_SRC_ALPHA
);
1427 glColor4f (0.5f
, 0.5f
, 0.0f
, 0.6f
);
1428 glRecti (bx0
, by0
, bx1
, by1
);
1429 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1430 glDisable (GL_BLEND
);
1432 if (isprint (c
) || c
==' ') {
1447 glEnable (GL_BLEND
);
1448 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1449 glBlendFunc (GL_DST_ALPHA
, GL_SRC_ALPHA
);
1450 glColor4f (0.5f
, 0.5f
, 0.0f
, 0.6f
);
1451 glRecti (rx0
, ry0
, rx1
, ry1
);
1452 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1453 glDisable (GL_BLEND
);
1457 if (seen
&& span
->eol
) {
1458 x0
= page
->pixmap
->x
;
1459 putc ('\n', stdout
);
1462 unlock ("ml_gettext");
1465 CAMLreturn (Val_unit
);
1468 CAMLprim value
ml_getpagewh (value pagedimno_v
)
1470 CAMLparam1 (pagedimno_v
);
1472 int pagedimno
= Int_val (pagedimno_v
);
1474 ret_v
= caml_alloc_small (4 * Double_wosize
, Double_array_tag
);
1475 Store_double_field (ret_v
, 0, state
.pagedims
[pagedimno
].box
.x0
);
1476 Store_double_field (ret_v
, 1, state
.pagedims
[pagedimno
].box
.x1
);
1477 Store_double_field (ret_v
, 2, state
.pagedims
[pagedimno
].box
.y0
);
1478 Store_double_field (ret_v
, 3, state
.pagedims
[pagedimno
].box
.y1
);
1482 CAMLprim value
ml_init (value sock_v
)
1487 CAMLparam1 (sock_v
);
1489 state
.texcount
= 256;
1490 state
.sliceheight
= 24;
1491 state
.texform
= GL_RGBA
;
1492 state
.texty
= GL_UNSIGNED_BYTE
;
1495 state
.texids
= calloc (state
.texcount
* sizeof (*state
.texids
), 1);
1496 if (!state
.texids
) {
1497 err (1, "calloc texids %zu", state
.texcount
* sizeof (*state
.texids
));
1500 state
.texowners
= calloc (state
.texcount
* sizeof (*state
.texowners
), 1);
1501 if (!state
.texowners
) {
1502 err (1, "calloc texowners %zu",
1503 state
.texcount
* sizeof (*state
.texowners
));
1506 glGenTextures (state
.texcount
, state
.texids
);
1509 state
.sock
= Socket_val (sock_v
);
1511 state
.sock
= Int_val (sock_v
);
1514 state
.cache
= fz_newglyphcache ();
1516 errx (1, "fz_newglyphcache failed");
1520 InitializeCriticalSection (&critsec
);
1521 state
.thread
= CreateThread (NULL
, 0, mainloop
, NULL
, 0, NULL
);
1522 if (state
.thread
== INVALID_HANDLE_VALUE
) {
1523 errx (1, "CreateThread failed: %lx", GetLastError ());
1526 ret
= pthread_create (&state
.thread
, NULL
, mainloop
, NULL
);
1528 errx (1, "pthread_create: %s", strerror (errno
));
1532 CAMLreturn (Val_unit
);