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_closexref (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 state
.xref
= pdf_openxref (file
);
321 die (fz_throw ("cannot open PDF file '%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
);
411 pdf_flushxref (state
.xref
, 0);
413 pagedim
= &state
.pagedims
[pindex
];
414 slicecount
= (pagedim
->bbox
.y1
- pagedim
->bbox
.y0
415 + state
.sliceheight
- 1) / state
.sliceheight
;
416 slicecount
+= slicecount
== 0;
418 page
= calloc (sizeof (*page
)
419 + (slicecount
* sizeof (struct slice
)), 1);
421 err (1, "calloc page %d\n", pageno
);
423 page
->slicecount
= slicecount
;
424 page
->prev
= state
.pages
;
427 pageobj
= pdf_getpageobject (state
.xref
, pageno
);
429 die (fz_throw ("cannot retrieve info from page %d", pageno
));
431 error
= pdf_loadpage (&drawpage
, state
.xref
, pageobj
);
435 page
->pixmap
= fz_newpixmapwithrect (pdf_devicergb
, pagedim
->bbox
);
436 fz_clearpixmap (page
->pixmap
, 0xFF);
438 idev
= fz_newdrawdevice (state
.cache
, page
->pixmap
);
440 die (fz_throw ("fz_newdrawdevice failed"));
441 error
= pdf_runcontentstream (idev
, pagedim
->ctm
, state
.xref
,
444 fz_freedevice (idev
);
446 page
->drawpage
= drawpage
;
447 page
->pagedim
= pagedim
;
448 page
->pageno
= pageno
;
452 if (!state
.lotsamemory
) {
453 pdf_agestoreditems (state
.xref
->store
);
454 pdf_evictageditems (state
.xref
->store
);
457 printd (state
.sock
, "V rendering %d took %f sec", pageno
, end
- start
);
461 static void initpdims (void)
467 for (pageno
= 0; pageno
< state
.pagecount
; ++pageno
) {
471 fz_obj
*obj
, *pageobj
;
473 pageobj
= pdf_getpageobject (state
.xref
, pageno
+ 1);
475 obj
= fz_dictgets (pageobj
, "CropBox");
476 if (!fz_isarray (obj
)) {
477 obj
= fz_dictgets (pageobj
, "MediaBox");
478 if (!fz_isarray (obj
)) {
479 die (fz_throw ("cannot find page bounds %d (%d Rd)",
480 fz_tonum (pageobj
), fz_togen (pageobj
)));
483 box
= pdf_torect (obj
);
485 obj
= fz_dictgets (pageobj
, "Rotate");
486 if (fz_isint (obj
)) {
487 rotate
= fz_toint (obj
);
492 rotate
+= state
.rotate
;
494 state
.pagetbl
[pageno
] = fz_tonum (state
.xref
->pagerefs
[pageno
]);
495 p
= &state
.pagedims
[state
.pagedimcount
- 1];
496 if ((state
.pagedimcount
== 0)
497 || (p
->rotate
!= rotate
|| memcmp (&p
->box
, &box
, sizeof (box
)))) {
500 size
= (state
.pagedimcount
+ 1) * sizeof (*state
.pagedims
);
501 state
.pagedims
= realloc (state
.pagedims
, size
);
502 if (!state
.pagedims
) {
503 err (1, "realloc pagedims to %zu (%d elems)",
504 size
, state
.pagedimcount
+ 1);
506 p
= &state
.pagedims
[state
.pagedimcount
++];
513 printd (state
.sock
, "T Processed %d pages in %f seconds",
514 state
.pagecount
, end
- start
);
517 static void layout (void)
523 struct pagedim
*p
= state
.pagedims
;
526 for (pindex
= 0; pindex
< state
.pagedimcount
; ++pindex
, ++p
) {
527 box
.x0
= MIN (p
->box
.x0
, p
->box
.x1
);
528 box
.y0
= MIN (p
->box
.y0
, p
->box
.y1
);
529 box
.x1
= MAX (p
->box
.x0
, p
->box
.x1
);
530 box
.y1
= MAX (p
->box
.y0
, p
->box
.y1
);
533 ctm
= fz_concat (ctm
, fz_translate (0, -box
.y1
));
534 ctm
= fz_concat (ctm
, fz_rotate (p
->rotate
));
535 box2
= fz_transformrect (ctm
, box
);
536 w
= box2
.x1
- box2
.x0
;
538 zoom
= (state
.w
/ w
);
540 ctm
= fz_concat (ctm
, fz_translate (0, -box
.y1
));
541 ctm
= fz_concat (ctm
, fz_scale (zoom
, -zoom
));
542 memcpy (&p
->ctm1
, &ctm
, sizeof (ctm
));
543 ctm
= fz_concat (ctm
, fz_rotate (p
->rotate
));
544 p
->bbox
= fz_roundrect (fz_transformrect (ctm
, box
));
545 memcpy (&p
->ctm
, &ctm
, sizeof (ctm
));
548 while (p
-- != state
.pagedims
) {
549 printd (state
.sock
, "l %d %d %d",
550 p
->pageno
, p
->bbox
.x1
- p
->bbox
.x0
, p
->bbox
.y1
- p
->bbox
.y0
);
554 static void recurse_outline (pdf_outline
*outline
, int level
)
562 if (!outline
->link
) goto next
;
564 obj
= outline
->link
->dest
;
565 if (fz_isindirect (obj
)) {
566 num
= fz_tonum (obj
);
568 for (i
= 0; i
< state
.pagecount
; ++i
) {
569 if (state
.pagetbl
[i
] == num
) {
575 else if (fz_isarray (obj
)) {
578 obj2
= fz_arrayget (obj
, 0);
579 if (fz_isint (obj2
)) {
580 pageno
= fz_toint (obj2
);
583 num
= fz_tonum (obj2
);
584 for (i
= 0; i
< state
.pagecount
; ++i
) {
585 if (state
.pagetbl
[i
] == num
) {
592 if (fz_arraylen (obj
) > 3) {
594 struct pagedim
*pagedim
= state
.pagedims
;
596 for (i
= 0; i
< state
.pagedimcount
; ++i
) {
597 if (state
.pagedims
[i
].pageno
> pageno
)
599 pagedim
= &state
.pagedims
[i
];
602 p
.x
= fz_toint (fz_arrayget (obj
, 2));
603 p
.y
= fz_toint (fz_arrayget (obj
, 3));
604 p
= fz_transformpoint (pagedim
->ctm
, p
);
609 lprintf ("%*c%s %d\n", level
, ' ', outline
->title
, pageno
);
610 printd (state
.sock
, "o %d %d %d %s",
611 level
, pageno
, top
, outline
->title
);
613 if (outline
->child
) {
614 recurse_outline (outline
->child
, level
+ 1);
616 outline
= outline
->next
;
620 static void process_outline (void)
622 pdf_outline
*outline
;
624 outline
= pdf_loadoutline (state
.xref
);
626 recurse_outline (outline
, 0);
627 pdf_freeoutline (outline
);
631 static int comparespans (const void *l
, const void *r
)
633 fz_textspan
const *const*ls
= l
;
634 fz_textspan
const *const*rs
= r
;
635 return (*ls
)->text
->bbox
.y0
- (*rs
)->text
->bbox
.y0
;
638 /* wishful thinking function */
639 static void search (regex_t
*re
, int pageno
, int y
, int forward
)
650 fz_textspan
*text
, *span
, **pspan
;
651 struct pagedim
*pdim
, *pdimprev
;
658 while (pageno
>= 0 && pageno
< state
.pagecount
&& !stop
) {
660 if (!state
.lotsamemory
) {
661 pdf_agestoreditems (state
.xref
->store
);
662 pdf_evictageditems (state
.xref
->store
);
665 if (hasdata (state
.sock
)) {
666 printd (state
.sock
, "T attention requested aborting search at %d",
671 printd (state
.sock
, "T searching in page %d", pageno
);
675 for (i
= 0; i
< state
.pagedimcount
; ++i
) {
676 pdim
= &state
.pagedims
[i
];
677 if (pdim
->pageno
== pageno
) {
680 if (pdim
->pageno
> pageno
) {
689 pageobj
= pdf_getpageobject (state
.xref
, pageno
+ 1);
691 die (fz_throw ("cannot retrieve info from page %d", pageno
));
693 error
= pdf_loadpage (&drawpage
, state
.xref
, pageobj
);
697 ctm
= fz_rotate (pdim
->rotate
);
699 text
= fz_newtextspan ();
700 tdev
= fz_newtextdevice (text
);
701 error
= pdf_runcontentstream (tdev
, pdim
->ctm1
, state
.xref
,
704 if (error
) die (error
);
705 fz_freedevice (tdev
);
708 for (span
= text
; span
; span
= span
->next
) {
711 pspan
= malloc (sizeof (void *) * nspans
);
713 err (1, "malloc span pointers %zu", sizeof (void *) * nspans
);
715 for (i
= 0, span
= text
; span
; span
= span
->next
, ++i
) {
718 qsort (pspan
, nspans
, sizeof (fz_textspan
*), comparespans
);
720 j
= forward
? 0 : nspans
- 1;
725 j
+= forward
? 1 : -1;
727 for (i
= 0; i
< MIN (span
->len
, (int) sizeof (buf
) - 1); ++i
) {
729 if (span
->text
[i
].bbox
.y0
< y
+ 1) {
734 if (span
->text
[i
].bbox
.y0
> y
- 1) {
738 if (span
->text
[i
].c
< 256) {
739 *p
++ = span
->text
[i
].c
;
750 ret
= regexec (re
, buf
, 1, &rm
, 0);
752 if (ret
!= REG_NOMATCH
) {
755 size
= regerror (ret
, re
, errbuf
, sizeof (errbuf
));
757 "T regexec error `%.*s'",
759 fz_freetextspan (text
);
760 pdf_freepage (drawpage
);
768 fz_point p1
, p2
, p3
, p4
;
770 xoff
= -pdim
->bbox
.x0
;
771 yoff
= -pdim
->bbox
.y0
;
773 sb
= &span
->text
[rm
.rm_so
].bbox
;
774 eb
= &span
->text
[rm
.rm_eo
- 1].bbox
;
785 p1
= fz_transformpoint (ctm
, p1
);
786 p2
= fz_transformpoint (ctm
, p2
);
787 p3
= fz_transformpoint (ctm
, p3
);
788 p4
= fz_transformpoint (ctm
, p4
);
791 printd (state
.sock
, "F %d %d %f %f %f %f %f %f %f %f",
793 p1
.x
+ xoff
, p1
.y
+ yoff
,
794 p2
.x
+ xoff
, p2
.y
+ yoff
,
795 p3
.x
+ xoff
, p3
.y
+ yoff
,
796 p4
.x
+ xoff
, p4
.y
+ yoff
);
798 printd (state
.sock
, "T found at %d `%.*s' in %f sec",
799 pageno
, rm
.rm_eo
- rm
.rm_so
, &buf
[rm
.rm_so
],
803 printd (state
.sock
, "R %d %d %f %f %f %f %f %f %f %f",
805 p1
.x
+ xoff
, p1
.y
+ yoff
,
806 p2
.x
+ xoff
, p2
.y
+ yoff
,
807 p3
.x
+ xoff
, p3
.y
+ yoff
,
808 p4
.x
+ xoff
, p4
.y
+ yoff
);
821 fz_freetextspan (text
);
822 pdf_freepage (drawpage
);
827 printd (state
.sock
, "T no matches %f sec", end
- start
);
829 printd (state
.sock
, "D");
838 mainloop (void *unused
)
841 int len
, ret
, oldlen
= 0;
844 len
= readlen (state
.sock
);
846 errx (1, "readlen returned 0");
849 if (oldlen
< len
+ 1) {
850 p
= realloc (p
, len
+ 1);
852 err (1, "realloc %d failed", len
+ 1);
856 readdata (state
.sock
, p
, len
);
859 if (!strncmp ("open", p
, 4)) {
861 char *filename
= p
+ 5;
866 obj
= fz_dictgets (state
.xref
->trailer
, "Info");
868 obj
= fz_dictgets (obj
, "Title");
870 printd (state
.sock
, "t %s", pdf_toutf8 (obj
));
874 else if (!strncmp ("free", p
, 4)) {
877 ret
= sscanf (p
+ 4, " %p", &ptr
);
879 errx (1, "malformed free `%.*s' ret=%d", len
, p
, ret
);
884 printd (state
.sock
, "d");
886 else if (!strncmp ("search", p
, 6)) {
887 int icase
, pageno
, y
, ret
, len2
, forward
;
891 ret
= sscanf (p
+ 6, " %d %d %d %d,%n",
892 &icase
, &pageno
, &y
, &forward
, &len2
);
894 errx (1, "malformed search `%s' ret=%d", p
, ret
);
897 pattern
= p
+ 6 + len2
;
898 ret
= regcomp (&re
, pattern
,
899 REG_EXTENDED
| (icase
? REG_ICASE
: 0));
904 size
= regerror (ret
, &re
, errbuf
, sizeof (errbuf
));
905 printd (state
.sock
, "T regcomp failed `%.*s'",
909 search (&re
, pageno
, y
, forward
);
913 else if (!strncmp ("geometry", p
, 8)) {
916 printd (state
.sock
, "c");
917 ret
= sscanf (p
+ 8, " %d %d", &w
, &h
);
919 errx (1, "malformed geometry `%.*s' ret=%d", len
, p
, ret
);
925 for (i
= 0; i
< state
.texcount
; ++i
) {
926 state
.texowners
[i
].slice
= NULL
;
933 printd (state
.sock
, "C %d", state
.pagecount
);
935 else if (!strncmp ("rotate", p
, 6)) {
938 printd (state
.sock
, "c");
939 ret
= sscanf (p
+ 6, " %f", &rotate
);
941 errx (1, "bad rotate line `%.*s' ret=%d", len
, p
, ret
);
943 state
.rotate
= rotate
;
945 state
.pagedimcount
= 0;
946 free (state
.pagedims
);
947 state
.pagedims
= NULL
;
952 printd (state
.sock
, "C %d", state
.pagecount
);
954 else if (!strncmp ("render", p
, 6)) {
955 int pageno
, pindex
, w
, h
, ret
;
958 ret
= sscanf (p
+ 6, " %d %d %d %d", &pageno
, &pindex
, &w
, &h
);
960 errx (1, "bad render line `%.*s' ret=%d", len
, p
, ret
);
963 page
= render (pageno
, pindex
);
964 printd (state
.sock
, "r %d %d %d %d %p\n",
971 else if (!strncmp ("interrupt", p
, 8)) {
972 printd (state
.sock
, "V interrupted");
975 errx (1, "unknown command %.*s", len
, p
);
981 static void upload2 (struct page
*page
, int slicenum
, const char *cap
)
986 struct slice
*slice
= &page
->slices
[slicenum
];
991 ARSERT (w
== slice
->w
);
992 if (slice
->texindex
!= -1
993 && state
.texowners
[slice
->texindex
].slice
== slice
) {
994 glBindTexture (GL_TEXTURE_RECTANGLE_ARB
, state
.texids
[slice
->texindex
]);
998 int index
= (state
.texindex
++ % state
.texcount
);
1001 for (i
= 0; i
< slicenum
; ++i
) {
1002 offset
+= w
* page
->slices
[i
].h
* 4;
1005 if (state
.texowners
[index
].w
== slice
->w
) {
1006 if (state
.texowners
[index
].h
>= slice
->h
) {
1010 state
.texowners
[index
].h
= slice
->h
;
1014 state
.texowners
[index
].h
= slice
->h
;
1017 state
.texowners
[index
].slice
= slice
;
1018 state
.texowners
[index
].w
= slice
->w
;
1019 slice
->texindex
= index
;
1021 glBindTexture (GL_TEXTURE_RECTANGLE_ARB
, state
.texids
[slice
->texindex
]);
1025 GLenum err
= glGetError ();
1026 if (err
!= GL_NO_ERROR
) {
1027 printf ("\033[0;31mERROR1 %d %d %#x\033[0m\n", w
, slice
->h
, err
);
1031 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB
,
1039 page
->pixmap
->samples
+ offset
1042 GLenum err
= glGetError ();
1043 if (err
!= GL_NO_ERROR
) {
1044 printf ("\033[0;31mERROR %d %d %#x\033[0m\n", w
, slice
->h
, err
);
1050 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB
,
1058 page
->pixmap
->samples
+ offset
1063 lprintf ("%s[%d] slice=%d(%d,%d) texid=%d %f sec\n",
1064 subimage
? "sub" : "img",
1065 page
->pageno
, slicenum
,
1067 state
.texids
[slice
->texindex
],
1072 CAMLprim value
ml_draw (value dispy_v
, value w_v
, value h_v
,
1073 value py_v
, value ptr_v
)
1075 CAMLparam5 (dispy_v
, w_v
, h_v
, py_v
, ptr_v
);
1076 int dispy
= Int_val (dispy_v
);
1077 int w
= Int_val (w_v
);
1078 int h
= Int_val (h_v
);
1079 int py
= Int_val (py_v
);
1080 char *s
= String_val (ptr_v
);
1086 if (trylock ("ml_draw")) {
1090 ret
= sscanf (s
, "%p", &ptr
);
1092 errx (1, "cannot parse pointer `%s'", s
);
1096 w
= page
->pixmap
->w
;
1098 ARSERT (h
>= 0 && "ml_draw wrong h");
1100 glEnable (GL_TEXTURE_RECTANGLE_ARB
);
1102 for (slicenum
= 0; slicenum
< page
->slicecount
; ++slicenum
) {
1103 struct slice
*slice
= &page
->slices
[slicenum
];
1104 if (slice
->h
> py
) {
1110 h
= MIN (state
.h
, h
);
1113 struct slice
*slice
= &page
->slices
[slicenum
];
1115 ARSERT (slicenum
< page
->slicecount
&& "ml_draw wrong slicenum");
1117 th
= MIN (h
, slice
->h
- py
);
1118 upload2 (page
, slicenum
, "upload");
1122 glTexCoord2i (0, py
);
1123 glVertex2i (0, dispy
);
1125 glTexCoord2i (w
, py
);
1126 glVertex2i (w
, dispy
);
1128 glTexCoord2i (w
, py
+th
);
1129 glVertex2i (w
, dispy
+ th
);
1131 glTexCoord2i (0, py
+th
);
1132 glVertex2i (0, dispy
+ th
);
1142 glDisable (GL_TEXTURE_RECTANGLE_ARB
);
1146 CAMLreturn (Val_unit
);
1149 static pdf_link
*getlink (struct page
*page
, int x
, int y
)
1155 p
.x
= x
+ page
->pixmap
->x
;
1156 p
.y
= y
+ page
->pixmap
->y
;
1158 ctm
= fz_invertmatrix (page
->pagedim
->ctm
);
1159 p
= fz_transformpoint (ctm
, p
);
1161 for (link
= page
->drawpage
->links
; link
; link
= link
->next
) {
1162 if (p
.x
>= link
->rect
.x0
&& p
.x
<= link
->rect
.x1
) {
1163 if (p
.y
>= link
->rect
.y0
&& p
.y
<= link
->rect
.y1
) {
1171 CAMLprim value
ml_highlightlinks (value ptr_v
, value yoff_v
)
1173 CAMLparam2 (ptr_v
, yoff_v
);
1176 int xoff
, yoff
= Int_val (yoff_v
);
1177 const char *s
= String_val (ptr_v
);
1179 if (trylock ("ml_highlightlinks")) {
1183 page
= parse_pointer ("ml_highlightlinks", s
);
1185 glPolygonMode (GL_FRONT_AND_BACK
, GL_LINE
);
1186 glEnable (GL_LINE_STIPPLE
);
1187 glLineStipple (0.5, 0xcccc);
1189 xoff
= -page
->pixmap
->x
;
1190 yoff
-= page
->pixmap
->y
;
1193 for (link
= page
->drawpage
->links
; link
; link
= link
->next
) {
1194 fz_point p1
, p2
, p3
, p4
;
1195 fz_matrix ctm
= page
->pagedim
->ctm
;
1197 p1
.x
= link
->rect
.x0
;
1198 p1
.y
= link
->rect
.y0
;
1200 p2
.x
= link
->rect
.x1
;
1201 p2
.y
= link
->rect
.y0
;
1203 p3
.x
= link
->rect
.x1
;
1204 p3
.y
= link
->rect
.y1
;
1206 p4
.x
= link
->rect
.x0
;
1207 p4
.y
= link
->rect
.y1
;
1209 p1
= fz_transformpoint (ctm
, p1
);
1210 p2
= fz_transformpoint (ctm
, p2
);
1211 p3
= fz_transformpoint (ctm
, p3
);
1212 p4
= fz_transformpoint (ctm
, p4
);
1214 switch (link
->kind
) {
1215 case PDF_LGOTO
: glColor3ub (255, 0, 0); break;
1216 case PDF_LURI
: glColor3ub (0, 0, 255); break;
1217 default: glColor3ub (0, 0, 0); break;
1220 glVertex2f (p1
.x
+ xoff
, p1
.y
+ yoff
);
1221 glVertex2f (p2
.x
+ xoff
, p2
.y
+ yoff
);
1222 glVertex2f (p3
.x
+ xoff
, p3
.y
+ yoff
);
1223 glVertex2f (p4
.x
+ xoff
, p4
.y
+ yoff
);
1227 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1228 glDisable (GL_LINE_STIPPLE
);
1229 unlock ("ml_highlightlinks");
1232 CAMLreturn (Val_unit
);
1235 CAMLprim value
ml_checklink (value ptr_v
, value x_v
, value y_v
)
1237 CAMLparam3 (ptr_v
, x_v
, y_v
);
1238 char *s
= String_val (ptr_v
);
1241 if (trylock ("ml_checklink")) {
1247 link
= getlink (parse_pointer ("ml_checklink", s
),
1248 Int_val (x_v
), Int_val (y_v
));
1254 if (link
->kind
== PDF_LURI
) {
1255 printd (state
.sock
, "T %s", fz_tostrbuf (link
->dest
));
1258 unlock ("ml_checklink");
1260 CAMLreturn (Val_bool (ret
));
1263 CAMLprim value
ml_getlink (value ptr_v
, value x_v
, value y_v
)
1265 CAMLparam3 (ptr_v
, x_v
, y_v
);
1266 CAMLlocal2 (ret_v
, tup_v
);
1269 char *s
= String_val (ptr_v
);
1271 ret_v
= Val_int (0);
1272 if (trylock ("ml_getlink")) {
1273 ret_v
= Val_int (0);
1277 page
= parse_pointer ("ml_getlink", s
);
1279 link
= getlink (page
, Int_val (x_v
), Int_val (y_v
));
1281 switch (link
->kind
) {
1289 obj
= fz_arrayget (link
->dest
, 0);
1290 if (fz_isindirect (obj
)) {
1291 pageno
= pdf_findpageobject (state
.xref
, obj
) - 1;
1293 else if (fz_isint (obj
)) {
1294 pageno
= fz_toint (obj
);
1297 if (fz_arraylen (link
->dest
) > 3) {
1298 p
.x
= fz_toint (fz_arrayget (link
->dest
, 2));
1299 p
.y
= fz_toint (fz_arrayget (link
->dest
, 3));
1300 p
= fz_transformpoint (page
->pagedim
->ctm
, p
);
1307 tup_v
= caml_alloc_tuple (2);
1308 ret_v
= caml_alloc_small (1, 1);
1309 Field (tup_v
, 0) = Val_int (pageno
);
1310 Field (tup_v
, 1) = Val_int (p
.y
);
1311 Field (ret_v
, 0) = tup_v
;
1316 printf ("%s\n", fz_tostrbuf (link
->dest
));
1317 tup_v
= caml_alloc_tuple (2);
1318 ret_v
= caml_alloc_small (1, 1);
1319 Field (tup_v
, 0) = Val_int (-1);
1320 Field (tup_v
, 1) = Val_int (0);
1321 Field (ret_v
, 0) = tup_v
;
1325 printd (state
.sock
, "T unhandled link kind %d", link
->kind
);
1329 unlock ("ml_getlink");
1335 CAMLprim value
ml_gettext (value ptr_v
, value rect_v
, value oy_v
, value rectsel_v
)
1337 CAMLparam4 (ptr_v
, rect_v
, oy_v
, rect_v
);
1342 char *s
= String_val (ptr_v
);
1343 int rectsel
= Bool_val (rectsel_v
);
1344 int i
, bx0
, bx1
, by0
, by1
, x0
, x1
, y0
, y1
, oy
;
1346 /* stop GCC from complaining about uninitialized variables */
1348 int rx0
= rx0
, rx1
= rx1
, ry0
= ry0
, ry1
= ry1
;
1350 int rx0
, rx1
, ry0
, ry1
;
1353 if (trylock ("ml_gettext")) {
1357 page
= parse_pointer ("ml_gettext", s
);
1359 oy
= Int_val (oy_v
);
1360 p1
.x
= Int_val (Field (rect_v
, 0));
1361 p1
.y
= Int_val (Field (rect_v
, 1));
1362 p2
.x
= Int_val (Field (rect_v
, 2));
1363 p2
.y
= Int_val (Field (rect_v
, 3));
1366 glEnable (GL_BLEND
);
1367 glPolygonMode (GL_FRONT_AND_BACK
, GL_LINE
);
1368 glBlendFunc (GL_DST_ALPHA
, GL_SRC_ALPHA
);
1369 glColor4f (0.0f
, 0.0f
, 0.0f
, 0.2f
);
1370 glRecti (p1
.x
, p1
.y
, p2
.x
, p2
.y
);
1371 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1372 glDisable (GL_BLEND
);
1375 ctm
= page
->pagedim
->ctm
;
1380 page
->text
= fz_newtextspan ();
1381 tdev
= fz_newtextdevice (page
->text
);
1382 error
= pdf_runcontentstream (tdev
, page
->pagedim
->ctm
, state
.xref
,
1383 page
->drawpage
->resources
,
1384 page
->drawpage
->contents
);
1385 if (error
) die (error
);
1386 fz_freedevice (tdev
);
1391 printf ("BBox %f %f %f %f\n", p1
.x
, p1
.y
, p2
.x
, p2
.y
);
1392 p1
.x
+= page
->pixmap
->x
;
1393 p1
.y
+= page
->pixmap
->y
;
1394 p2
.x
+= page
->pixmap
->x
;
1395 p2
.y
+= page
->pixmap
->y
;
1400 printf ("BBox %d %d %d %d %d %d\n", x0
, y0
, x1
, y1
, oy
, page
->pageno
);
1402 for (span
= page
->text
; span
; span
= span
->next
) {
1405 /* fz_debugtextspanxml (span); */
1406 for (i
= 0; i
< span
->len
; ++i
) {
1409 bx0
= span
->text
[i
].bbox
.x0
;
1410 bx1
= span
->text
[i
].bbox
.x1
;
1411 by0
= span
->text
[i
].bbox
.y0
+ oy
;
1412 by1
= span
->text
[i
].bbox
.y1
+ oy
;
1414 if ((bx1
>= x0
&& bx0
<= x1
&& by1
>= y0
&& by0
<= y1
)) {
1416 rx0
= bx0
- page
->pixmap
->x
;
1417 rx1
= bx1
- page
->pixmap
->x
;
1423 c
= span
->text
[i
].c
;
1425 if ((isprint (c
) && !isspace (c
))) {
1427 bx0
-= page
->pixmap
->x
;
1428 bx1
-= page
->pixmap
->x
;
1429 glEnable (GL_BLEND
);
1430 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1431 glBlendFunc (GL_DST_ALPHA
, GL_SRC_ALPHA
);
1432 glColor4f (0.5f
, 0.5f
, 0.0f
, 0.6f
);
1433 glRecti (bx0
, by0
, bx1
, by1
);
1434 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1435 glDisable (GL_BLEND
);
1437 if (isprint (c
) || c
==' ') {
1452 glEnable (GL_BLEND
);
1453 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1454 glBlendFunc (GL_DST_ALPHA
, GL_SRC_ALPHA
);
1455 glColor4f (0.5f
, 0.5f
, 0.0f
, 0.6f
);
1456 glRecti (rx0
, ry0
, rx1
, ry1
);
1457 glPolygonMode (GL_FRONT_AND_BACK
, GL_FILL
);
1458 glDisable (GL_BLEND
);
1462 if (seen
&& span
->eol
) {
1463 x0
= page
->pixmap
->x
;
1464 putc ('\n', stdout
);
1467 unlock ("ml_gettext");
1470 CAMLreturn (Val_unit
);
1473 CAMLprim value
ml_getpagewh (value pagedimno_v
)
1475 CAMLparam1 (pagedimno_v
);
1477 int pagedimno
= Int_val (pagedimno_v
);
1479 ret_v
= caml_alloc_small (4 * Double_wosize
, Double_array_tag
);
1480 Store_double_field (ret_v
, 0, state
.pagedims
[pagedimno
].box
.x0
);
1481 Store_double_field (ret_v
, 1, state
.pagedims
[pagedimno
].box
.x1
);
1482 Store_double_field (ret_v
, 2, state
.pagedims
[pagedimno
].box
.y0
);
1483 Store_double_field (ret_v
, 3, state
.pagedims
[pagedimno
].box
.y1
);
1487 CAMLprim value
ml_init (value sock_v
)
1492 CAMLparam1 (sock_v
);
1494 state
.texcount
= 256;
1495 state
.sliceheight
= 24;
1496 state
.texform
= GL_RGBA
;
1497 state
.texty
= GL_UNSIGNED_BYTE
;
1500 state
.texids
= calloc (state
.texcount
* sizeof (*state
.texids
), 1);
1501 if (!state
.texids
) {
1502 err (1, "calloc texids %zu", state
.texcount
* sizeof (*state
.texids
));
1505 state
.texowners
= calloc (state
.texcount
* sizeof (*state
.texowners
), 1);
1506 if (!state
.texowners
) {
1507 err (1, "calloc texowners %zu",
1508 state
.texcount
* sizeof (*state
.texowners
));
1511 glGenTextures (state
.texcount
, state
.texids
);
1514 state
.sock
= Socket_val (sock_v
);
1516 state
.sock
= Int_val (sock_v
);
1519 state
.cache
= fz_newglyphcache ();
1521 errx (1, "fz_newglyphcache failed");
1525 InitializeCriticalSection (&critsec
);
1526 state
.thread
= CreateThread (NULL
, 0, mainloop
, NULL
, 0, NULL
);
1527 if (state
.thread
== INVALID_HANDLE_VALUE
) {
1528 errx (1, "CreateThread failed: %lx", GetLastError ());
1531 ret
= pthread_create (&state
.thread
, NULL
, mainloop
, NULL
);
1533 errx (1, "pthread_create: %s", strerror (errno
));
1537 CAMLreturn (Val_unit
);