3 let log fmt
= Printf.kprintf prerr_endline fmt
;;
4 let dolog fmt
= Printf.kprintf prerr_endline fmt
;;
6 external init
: Unix.file_descr
-> unit = "ml_init";;
7 external draw
: int -> int -> int -> int -> string -> unit = "ml_draw";;
8 external preload
: string -> unit = "ml_preload";;
9 external gettext
: string -> (int * int * int * int) -> int -> bool -> unit =
11 external checklink
: string -> int -> int -> bool = "ml_checklink";;
12 external getlink
: string -> int -> int -> (int * int) option = "ml_getlink";;
14 type mstate
= Msel
of ((int * int) * (int * int)) | Mnone
;;
32 { store
= Array.create n v
39 let cblen b
= Array.length b
.store
;;
44 b
.wc
<- (b
.wc
+ 1) mod len;
45 b
.len <- (b
.len + 1) mod len;
48 let cbpeekw b
= b
.store
.(b
.wc
);;
51 let v = b
.store
.(b
.rc
) in
56 let rc = if b
.rc = 0 then b
.len - 1 else b
.rc - 1 in
78 { mutable scrollw
: int
79 ; mutable scrollh
: int
80 ; mutable rectsel
: bool
81 ; mutable icase
: bool
82 ; mutable preload
: bool
83 ; mutable titletext
: bool
84 ; mutable pagebias
: int
85 ; mutable redispimm
: bool
86 ; mutable verbose
: bool
87 ; mutable scrollincr
: int
88 ; mutable maxhfit
: bool
92 type outline
= string * int * int * int;;
93 type outlines
= Oarray
of outline array
| Olist
of outline list
;;
96 { mutable csock
: Unix.file_descr
97 ; mutable ssock
: Unix.file_descr
101 ; mutable prevy
: int
103 ; mutable layout
: layout list
104 ; pagemap
: ((int * int), string) Hashtbl.t
105 ; mutable pages
: (int * int * int) list
106 ; mutable pagecount
: int
107 ; pagecache
: string circbuf
108 ; navhist
: float circbuf
109 ; mutable inflight
: int
111 ; mutable mstate
: mstate
112 ; mutable searchpattern
: string
113 ; mutable rects
: (int * int * Gl.point2
* Gl.point2
) list
114 ; mutable text
: string
115 ; mutable fullscreen
: (int * int) option
116 ; mutable textentry
:
117 (char
* string * (string -> int -> te
) * (string -> unit)) option
118 ; mutable outlines
: outlines
119 ; mutable outline
: (int * int * outline array
* string) option
147 ; pagemap
= Hashtbl.create
10
148 ; pagecache
= cbnew 10 ""
154 ; navhist
= cbnew 100 0.0
160 ; outlines
= Olist
[]
168 Printf.kprintf prerr_endline fmt
170 Printf.kprintf ignore fmt
174 let len = String.length s
in
176 let b = Buffer.create
n in
177 Buffer.add_char
b (Char.chr
((len lsr 24) land 0xff));
178 Buffer.add_char
b (Char.chr
((len lsr 16) land 0xff));
179 Buffer.add_char
b (Char.chr
((len lsr 8) land 0xff));
180 Buffer.add_char
b (Char.chr
((len lsr 0) land 0xff));
181 Buffer.add_string
b s
;
182 let s'
= Buffer.contents
b in
183 let n'
= Unix.write fd
s'
0 n in
184 if n'
!= n then failwith
"write failed";
189 let n = Unix.read fd
s 0 4 in
190 if n != 4 then failwith
"incomplete read(len)";
192 lor (Char.code
s.[0] lsl 24)
193 lor (Char.code
s.[1] lsl 16)
194 lor (Char.code
s.[2] lsl 8)
195 lor (Char.code
s.[3] lsl 0)
197 let s = String.create
len in
198 let n = Unix.read fd
s 0 len in
199 if n != len then failwith
"incomplete read(data)";
204 if y
= state.maxy
then 1.0
205 else float y
/. float state.maxy
209 let b = Buffer.create
10 in
210 Buffer.add_string
b s;
211 let rec combine = function
212 | [] -> Buffer.contents
b
214 Buffer.add_char
b ' '
;
217 | `
b b -> if b then "1" else "0"
219 | `i i
-> string_of_int i
220 | `f f
-> string_of_float f
221 | `I f
-> string_of_int
(truncate f
)
223 Buffer.add_string
b s;
227 writecmd state.csock
s;
231 let rec f pn ph fh l
=
233 | (n, _
, h
) :: rest
->
234 let fh = fh + (n - pn
) * ph
in
238 let fh = fh + (ph
* (state.pagecount
- pn
)) in
239 max
0 (fh - (if conf.maxhfit
then state.h
else 0))
241 let fh = f 0 0 0 state.pages
in
245 let getpagey pageno
=
246 let rec f pn ph y l
=
248 | (n, _
, h
) :: rest
->
251 y
+ (pageno
- pn
) * ph
253 let y = y + (n - pn
) * ph
in
257 y + (pageno
- pn
) * ph
263 let rec f pageno pdimno prev vy py dy l cacheleft accu
=
264 if pageno
= state.pagecount
|| cacheleft
= 0
267 let ((_
, w
, h
) as curr
), rest
, pdimno
=
269 | ((pageno'
, _
, _
) as curr
) :: rest
when pageno'
= pageno
->
270 curr
, rest
, pdimno
+ 1
274 let pageno'
= pageno + 1 in
308 let accu = e :: accu in
309 f pageno' pdimno curr
310 (vy
+ vh) (py + h
) (dy
+ vh + 2) rest
311 (pred cacheleft
) accu
313 f pageno' pdimno curr vy
(py + h
) dy rest cacheleft
accu
315 let accu = f 0 ~
-1 (0,0,0) y 0 0 state.pages
(cblen state.pagecache
) [] in
316 state.maxy
<- calcheight ();
321 let y = state.y + incr
in
323 let y = min
y state.maxy
in
329 let y = min
state.maxy
y in
330 let pages = layout y state.h
in
332 state.layout <- pages;
335 Glut.postRedisplay
()
340 cbput state.navhist
(yratio state.y);
341 cbrfollowlen state.navhist
;
345 let y = cbget state.navhist
in
346 truncate
(y *. float state.maxy
)
350 let y = getpagey n in
359 GlDraw.viewport
0 0 w h
;
360 GlMat.mode `modelview
;
361 GlMat.load_identity
();
362 GlMat.mode `projection
;
363 GlMat.load_identity
();
364 GlMat.rotate ~x
:1.0 ~angle
:180.0 ();
365 GlMat.translate ~x
:~
-.1.0 ~
y:~
-.1.0 ();
366 GlMat.scale3
(2.0 /. float w
, 2.0 /. float state.h
, 1.0);
367 GlClear.color
(1., 1., 1.);
368 GlClear.clear
[`color
];
373 wcmd "geometry" [`i
(state.w
- conf.scrollw
); `i h
];
377 if not
conf.titletext
379 GlDraw.color
(0.0, 0.0, 0.0);
381 (0.0, float (state.h
- 18))
382 (float (state.w
- conf.scrollw
- 1), float state.h
)
384 let font = Glut.BITMAP_8_BY_13
in
385 GlDraw.color
(1.0, 1.0, 1.0);
386 GlPix.raster_pos ~x
:0.0 ~
y:(float (state.h
- 5)) ();
387 Glut.bitmapCharacter ~
font ~c
:(Char.code c
);
388 String.iter
(fun c
-> Glut.bitmapCharacter ~
font ~c
:(Char.code c
)) s
391 let len = String.length
s in
392 let dst = String.create
(len + 1) in
401 Glut.setWindowTitle ~title
:dst
405 let len = String.length
state.text
in
406 match state.textentry
with
408 if len > 0 then showtext ' '
state.text
410 | Some
(c
, text
, _
, _
) ->
414 text ^
" [" ^
state.text ^
"]"
427 Glut.postRedisplay
()
430 let n = Scanf.sscanf cmd
"C %d" (fun n -> n) in
431 state.pagecount
<- n;
432 let rely = yratio state.y in
433 let maxy = calcheight () in
434 state.y <- truncate
(float maxy *. rely);
435 let pages = layout state.y state.h
in
436 state.layout <- pages;
437 Glut.postRedisplay
();
440 state.safe
<- state.safe
- 1;
443 Glut.postRedisplay
()
447 let s = Scanf.sscanf cmd
"T %S" (fun s -> s) in
451 (* Glut.postRedisplay () *)
454 let pageno, c
, x0
, y0
, x1
, y1
=
455 Scanf.sscanf cmd
"F %d %d %f %f %f %f"
456 (fun p c x0 y0 x1 y1
-> (p
, c
, x0
, y0
, x1
, y1
))
458 let y = (getpagey pageno) + truncate y0
in
461 state.rects
<- [pageno, c
, (x0
, y0
), (x1
, y1
)]
464 let pageno, c
, x0
, y0
, x1
, y1
=
465 Scanf.sscanf cmd
"R %d %d %f %f %f %f"
466 (fun pageno c x0 y0 x1 y1
-> (pageno, c
, x0
, y0
, x1
, y1
))
468 state.rects
<- (pageno, c
, (x0
, y0
), (x1
, y1
)) :: state.rects
472 Scanf.sscanf cmd
"r %d %d %d %s"
473 (fun n w h p
-> (n, w
, h
, p
))
475 Hashtbl.replace
state.pagemap
(n, w
) p
;
476 let evicted = cbpeekw state.pagecache
in
477 if String.length
evicted > 0
479 state.safe
<- state.safe
+ 1;
480 wcmd "free" [`
s evicted];
481 let l = Hashtbl.fold
(fun k p a
->
482 if evicted = p
then k
:: a
else a
) state.pagemap
[]
484 List.iter
(fun k
-> Hashtbl.remove
state.pagemap k
) l;
486 cbput state.pagecache p
;
487 state.inflight
<- pred
state.inflight
;
488 Glut.postRedisplay
()
491 let (n, w
, h
) as pagelayout
=
492 Scanf.sscanf cmd
"l %d %d %d" (fun n w h
-> n, w
, h
)
494 state.pages <- pagelayout
:: state.pages
498 Scanf.sscanf cmd
"o %d %d %d %n" (fun l n t pos
-> l, n, t
, pos
)
500 let s = String.sub cmd pos
(String.length cmd
- pos
) in
501 let outline = (s, l, n, t
) in
503 match state.outlines with
504 | Olist
outlines -> Olist
(outline :: outlines)
505 | Oarray _
-> Olist
[outline]
507 state.outlines <- outlines
510 log "unknown cmd `%S'" cmd
513 let getopaque pageno =
514 try Some
(Hashtbl.find
state.pagemap
(pageno + 1, state.w
- conf.scrollw
))
515 with Not_found
-> None
518 let cache pageno opaque
=
519 Hashtbl.replace
state.pagemap
(pageno + 1, state.w
- conf.scrollw
) opaque
522 let validopaque opaque
= String.length opaque
> 0;;
525 match getopaque l.pageno with
526 | Some opaque
when validopaque opaque
->
529 | None
when state.inflight
< 2+0*(cblen state.pagecache
) ->
530 state.inflight
<- succ
state.inflight
;
532 wcmd "render" [`i
(l.pageno + 1)
541 if not
conf.redispimm
&& state.y != state.prevy
543 state.prevy
<- state.y;
544 Glut.postRedisplay
();
547 let r, _
, _
= Unix.select
[state.csock
] [] [] 0.02 in
551 if conf.preload then begin
553 let y = if state.y < state.h then 0 else state.y - state.h in
554 let pages = layout y (h*3) in
555 List.iter
preload pages;
559 let cmd = readcmd state.csock
in
564 let search pattern forward
=
565 if String.length pattern
> 0
568 match state.layout with
571 l.pageno, (l.pagey
+ if forward
then 0 else 0*l.pagevh
)
573 wcmd "search" [`
b conf.icase
; `i
pn; `i
py; `i
(if forward
then 1 else 0)
574 ; `
s (pattern ^
"\000")]
577 let intentry text key
=
578 let c = Char.unsafe_chr key
in
581 let s = "x" in s.[0] <- c;
582 let text = text ^
s in
586 state.text <- Printf.sprintf
"invalid char (%d, `%c')" key
c;
591 let b = Buffer.create
(String.length
s + 1) in
592 Buffer.add_string
b s;
597 let textentry text key
=
598 let c = Char.unsafe_chr key
in
600 | _
when key
>= 32 && key
<= 127 ->
601 let text = addchar text c in
605 log "unhandled key %d char `%c'" key
(Char.unsafe_chr key
);
609 let optentry text key
=
610 let btos b = if b then "on" else "off" in
611 let c = Char.unsafe_chr key
in
614 conf.rectsel
<- not
conf.rectsel
;
615 TEdone
("rectsel " ^
(btos conf.rectsel
))
618 conf.icase
<- not
conf.icase
;
619 TEdone
("case insensitive search " ^
(btos conf.icase
))
622 conf.preload <- not
conf.preload;
623 TEdone
("preload " ^
(btos conf.preload))
626 conf.titletext
<- not
conf.titletext
;
627 TEdone
("titletext " ^
(btos conf.titletext
))
630 conf.redispimm
<- not
conf.redispimm
;
631 TEdone
("immediate redisplay " ^
(btos conf.redispimm
))
634 conf.verbose
<- not
conf.verbose
;
635 TEdone
("verbose " ^
(btos conf.verbose
))
638 conf.maxhfit
<- not
conf.maxhfit
;
639 state.maxy <- state.maxy + (if conf.maxhfit
then -state.h else state.h);
640 TEdone
("maxhfit " ^
(btos conf.maxhfit
))
643 state.text <- Printf.sprintf
"bad option %d `%c'" key
c;
647 let maxoutlinerows () = (state.h - 31) / 16;;
649 let enteroutlinemode () =
651 match state.layout with
653 | {pageno=pageno} :: rest
-> pageno
656 match state.outlines with
659 let a = Array.of_list
(List.rev
l) in
660 state.outlines <- Oarray
a;
665 if n = Array.length
outlines
668 let (_
, _
, outlinepageno
, _
) = outlines.(n) in
669 if outlinepageno
>= pageno then n else loop (n+1)
674 Some
(active, max
0 (active - maxoutlinerows ()), outlines, "");
675 Glut.postRedisplay
();
678 let viewkeyboard ~key ~x ~
y =
680 state.textentry <- te
;
685 match state.textentry with
687 let c = Char.chr key
in
702 Glut.postRedisplay
()
705 let ondone isforw
s =
706 state.searchpattern
<- s;
709 enttext (Some
(c, "", textentry, ondone (c ='
/'
)))
714 try int_of_string
s with exc
->
715 state.text <- Printf.sprintf
"bad integer `%s': %s"
716 s (Printexc.to_string exc
);
722 state.text <- "page bias is now " ^ string_of_int
n;
725 enttext (Some
('
+'
, "", intentry, ondone))
731 enttext (Some
('
-'
, "", optentry, ondone))
736 try int_of_string
s with exc
->
737 state.text <- Printf.sprintf
"bad integer `%s': %s"
738 s (Printexc.to_string exc
);
745 gotoy (getpagey (n + conf.pagebias
- 1))
748 let pageentry text key
=
749 match Char.unsafe_chr key
with
751 | _
-> intentry text key
753 let text = "x" in text.[0] <- c;
754 enttext (Some
('
:'
, text, pageentry, ondone))
757 conf.scrollw
<- if conf.scrollw
> 0 then 0 else 5;
758 reshape state.w
state.h;
761 begin match state.fullscreen
with
763 state.fullscreen
<- Some
(state.w
, state.h);
766 state.fullscreen
<- None
;
767 Glut.reshapeWindow ~w ~
h
771 search state.searchpattern
true
774 search state.searchpattern
false
777 begin match state.layout with
780 gotoy (state.y - l.pagey
);
784 begin match List.rev
state.layout with
787 gotoy (state.y + l.pageh
- l.pagey
)
791 begin match state.layout with
794 gotoy (state.y-l.pageh
);
799 if fn
= -1 then l.pageno, l.pageno else fn
, l.pageno
801 let fn, ln
= List.fold_left
f (-1, -1) state.layout in
803 let percent = (100. *. yratio state.y) in
806 Printf.sprintf
"Page %d of %d %.2f%%"
807 (fn+1) state.pagecount
percent
810 "Pages %d-%d of %d %.2f%%"
811 (fn+1) (ln
+1) state.pagecount
percent
817 begin match state.layout with
820 Glut.reshapeWindow
(l.pagew
+ conf.scrollw
) l.pageh
;
821 Glut.postRedisplay
();
825 vlog "huh? %d %c" key
(Char.chr key
);
828 | Some
(c, text, onkey
, ondone) when key
= 8 ->
829 let len = String.length
text in
830 if len = 0 || len = 1
832 state.textentry <- None
;
833 Glut.postRedisplay
();
836 let s = String.sub
text 0 (len - 1) in
837 enttext (Some
(c, s, onkey
, ondone))
840 | Some
(c, text, onkey
, ondone) ->
841 begin match Char.unsafe_chr key
with
844 state.textentry <- None
;
845 Glut.postRedisplay
()
848 state.textentry <- None
;
849 Glut.postRedisplay
()
852 begin match onkey
text key
with
854 state.textentry <- None
;
856 Glut.postRedisplay
()
859 enttext (Some
(c, text, onkey
, ondone));
862 state.textentry <- None
;
863 Glut.postRedisplay
()
868 let outlinekeyboard ~key ~x ~
y (active, first
, outlines, qsearch
) =
869 let search active pattern incr
=
870 let re = Str.regexp_case_fold pattern
in
872 if n = Array.length
outlines || n = -1 then None
else
873 let (s, _
, _
, _
) = outlines.(n) in
875 (try ignore
(Str.search_forward
re s 0); true
876 with Not_found
-> false)
878 let maxrows = maxoutlinerows () in
880 then Some
(n, max
0 (n - maxrows))
881 else Some
(n, max first
(n - maxrows))
889 if String.length qsearch
= 0
892 state.outline <- None
;
893 Glut.postRedisplay
();
897 state.outline <- Some
(active, first
, outlines, "");
898 Glut.postRedisplay
();
902 let incr = if key
= 18 then -1 else 1 in
904 match search (active + incr) qsearch
incr with
905 | None
-> active, first
908 state.outline <- Some
(active, first
, outlines, qsearch
);
909 Glut.postRedisplay
();
912 let len = String.length qsearch
in
919 state.outline <- Some
(active, first
, outlines, "");
922 let qsearch = String.sub
qsearch 0 (len - 1) in
923 state.text <- qsearch;
924 state.outline <- Some
(active, first
, outlines, qsearch);
926 Glut.postRedisplay
()
929 let (_
, _
, n, t
) = outlines.(active) in
932 state.outline <- None
;
933 Glut.postRedisplay
();
935 | _
when key
>= 32 && key
<= 127 ->
936 let pattern = addchar qsearch (Char.chr key
) in
938 match search active pattern 1 with
939 | None
-> active, first
942 state.text <- pattern;
943 state.outline <- Some
(active, first
, outlines, pattern);
944 Glut.postRedisplay
()
946 | _
-> log "unknown key %d" key
949 let keyboard ~key ~x ~
y =
950 match state.outline with
951 | None
-> viewkeyboard ~key ~x ~
y
952 | Some
outline -> outlinekeyboard ~key ~x ~
y outline
955 let special ~key ~x ~
y =
956 match state.outline with
960 | Glut.KEY_F3
-> search state.searchpattern
true; state.y
961 | Glut.KEY_UP
-> clamp (-conf.scrollincr
)
962 | Glut.KEY_DOWN
-> clamp conf.scrollincr
963 | Glut.KEY_PAGE_UP
-> clamp (-state.h)
964 | Glut.KEY_PAGE_DOWN
-> clamp state.h
965 | Glut.KEY_HOME
-> addnav (); 0
968 state.maxy - (if conf.maxhfit
then 0 else state.h)
974 | Some
(active, first
, outlines, qsearch) ->
975 let maxrows = maxoutlinerows () in
977 let active = active + incr in
978 let active = max
0 (min
active (Array.length
outlines - 1)) in
982 let rows = active - first in
983 if rows > maxrows then first + incr else first
986 state.outline <- Some
(active, first, outlines, qsearch);
987 Glut.postRedisplay
()
990 | Glut.KEY_UP
-> navigate ~
-1
991 | Glut.KEY_DOWN
-> navigate 1
992 | Glut.KEY_PAGE_UP
-> navigate ~
-maxrows
993 | Glut.KEY_PAGE_DOWN
-> navigate maxrows
996 state.outline <- Some
(0, 0, outlines, qsearch);
997 Glut.postRedisplay
()
1000 let active = Array.length
outlines - 1 in
1001 let first = max
0 (active - maxrows) in
1002 state.outline <- Some
(active, first, outlines, qsearch);
1003 Glut.postRedisplay
()
1008 let drawplaceholder l =
1011 GlDraw.color
(0.2, 0.2, 0.2);
1012 GlDraw.color
(1.0, 1.0, 1.0);
1014 (0.0, float l.pagedispy
)
1015 (float l.pagew
, float (l.pagedispy
+ l.pagevh
))
1018 and y = float (l.pagedispy
+ l.pagevh
- 5) in
1019 let font = Glut.BITMAP_8_BY_13
in
1020 GlDraw.color
(0.0, 0.0, 0.0);
1021 GlPix.raster_pos ~
x ~
y ();
1022 String.iter
(fun c -> Glut.bitmapCharacter ~
font ~
c:(Char.code
c))
1023 ("Loading " ^ string_of_int
l.pageno);
1026 GlDraw.begins `quads
;
1027 GlDraw.vertex2
(0.0, float l.pagedispy
);
1028 GlDraw.vertex2
(float l.pagew
, float l.pagedispy
);
1029 GlDraw.vertex2
(float l.pagew
, float (l.pagedispy
+ l.pagevh
));
1030 GlDraw.vertex2
(0.0, float (l.pagedispy
+ l.pagevh
));
1035 let now () = Unix.gettimeofday
();;
1038 begin match getopaque l.pageno with
1039 | Some opaque
when validopaque opaque
->
1040 GlDraw.color
(1.0, 1.0, 1.0);
1044 draw
l.pagedispy
l.pagew
l.pagevh
l.pagey opaque
1048 vlog "draw %f sec safe %d" d state.safe
;
1054 if state.inflight
< cblen state.pagecache
1056 List.iter
preload state.layout;
1060 vlog "inflight %d" state.inflight
;
1063 GlDraw.color
(0.5, 0.5, 0.5);
1066 (float (state.w
- conf.scrollw
), float (i
+ (l.pagedispy
- i
)))
1068 l.pagedispy
+ l.pagevh
;
1071 let scrollindicator () =
1072 GlDraw.color
(0.64 , 0.64, 0.64);
1074 (float (state.w
- conf.scrollw
), 0.)
1075 (float state.w
, float state.h)
1077 GlDraw.color
(0.0, 0.0, 0.0);
1078 let sh = (float (state.maxy + state.h) /. float state.h) in
1079 let sh = float state.h /. sh in
1080 let sh = max
sh (float conf.scrollh
) in
1082 let percent = yratio state.y in
1083 let position = (float state.h -. sh) *. percent in
1086 if position +. sh > float state.h
1093 (float (state.w
- conf.scrollw
), position)
1094 (float state.w
, position +. sh)
1099 match state.mstate
with
1103 | Msel
((x0
, y0
), (x1
, y1
)) ->
1105 and y1
= max
y0 y1
in
1108 if (y0 >= l.pagedispy
&& y0 <= (l.pagedispy
+ l.pagevh
))
1109 || ((y1
>= l.pagedispy
)) (* && y1 <= (dy + vh))) *)
1111 match getopaque l.pageno with
1112 | Some opaque
when validopaque opaque
->
1113 let oy = -l.pagey
+ l.pagedispy
in
1114 gettext opaque
(min x0 x1
, y0, max x1 x0
, y1
) oy conf.rectsel
1117 List.iter
f state.layout
1122 GlDraw.color
(0.0, 0.0, 1.0) ~alpha
:0.5;
1123 GlFunc.blend_func `src_alpha `one_minus_src_alpha
;
1125 (fun (pageno, c, (x0
, y0), (x1
, y1
)) ->
1127 if l.pageno = pageno
1129 let d = float (l.pagedispy
- l.pagey
) in
1130 GlDraw.color
(0.0, 0.0, 1.0 /. float c) ~alpha
:0.5;
1131 GlDraw.rect
(x0
, y0 +. d) (x1
, y1
+. d)
1139 let showoutline = function
1141 | Some
(active, first, outlines, qsearch) ->
1143 GlFunc.blend_func `src_alpha `one_minus_src_alpha
;
1144 GlDraw.color
(0., 0., 0.) ~alpha
:0.85;
1145 GlDraw.rect
(0., 0.) (float state.w
, float state.h);
1148 GlDraw.color
(1., 1., 1.);
1149 let font = Glut.BITMAP_9_BY_15
in
1150 let draw_string x y s =
1151 GlPix.raster_pos ~
x ~
y ();
1152 String.iter
(fun c -> Glut.bitmapCharacter ~
font ~
c:(Char.code
c)) s
1155 if row
= Array.length
outlines || (row
- first) * 16 > state.h
1158 let (s, l, _
, _
) = outlines.(row
) in
1159 let y = (row
- first) * 16 in
1164 GlDraw.polygon_mode `both `line
;
1165 GlFunc.blend_func `src_alpha `one_minus_src_alpha
;
1166 GlDraw.color
(1., 1., 1.) ~alpha
:0.9;
1167 GlDraw.rect
(0., float (y + 1))
1168 (float (state.w
- conf.scrollw
- 1), float (y + 18));
1169 GlDraw.polygon_mode `both `fill
;
1171 GlDraw.color
(1., 1., 1.);
1173 draw_string (float x) (float (y + 16)) s;
1181 let lasty = List.fold_left
drawpage 0 (state.layout) in
1182 GlDraw.color
(0.5, 0.5, 0.5);
1185 (float (state.w
- conf.scrollw
), float state.h)
1190 showoutline state.outline;
1192 Glut.swapBuffers
();
1196 let rec f = function
1198 begin match getopaque l.pageno with
1199 | Some opaque
when validopaque opaque
->
1200 let y = y - l.pagedispy
in
1203 let y = l.pagey
+ y in
1204 match getlink opaque
x y with
1218 let rec f = function
1220 begin match getopaque l.pageno with
1221 | Some opaque
when validopaque opaque
->
1222 let y = y - l.pagedispy
in
1225 let y = l.pagey
+ y in
1226 if checklink opaque
x y then true else f rest
1237 let mouse ~button ~bstate ~
x ~
y =
1239 | Glut.OTHER_BUTTON
n when n == 3 || n == 4 && bstate
= Glut.UP
->
1247 let incr = incr * 2 in
1248 let y = clamp incr in
1251 | Glut.LEFT_BUTTON
when state.outline = None
->
1252 let dest = if bstate
= Glut.DOWN
then getlink x y else None
in
1253 begin match dest with
1254 | Some
(pageno, top
) ->
1258 if bstate
= Glut.DOWN
1260 Glut.setCursor
Glut.CURSOR_CROSSHAIR
;
1261 state.mstate
<- Msel
((x, y), (x, y));
1262 Glut.postRedisplay
()
1265 Glut.setCursor
Glut.CURSOR_RIGHT_ARROW
;
1266 state.mstate
<- Mnone
;
1273 let mouse ~button ~
state ~
x ~
y = mouse button
state x y;;
1276 if state.outline = None
1278 match state.mstate
with
1281 state.mstate
<- Msel
(a, (x, y));
1282 Glut.postRedisplay
()
1286 if state.outline = None
1288 match state.mstate
with
1289 | Mnone
when (checklink x y) ->
1290 Glut.setCursor
Glut.CURSOR_INFO
1293 Glut.setCursor
Glut.CURSOR_RIGHT_ARROW
1300 let name = ref "" in
1301 Arg.parse
[] (fun s -> name := s) "options:";
1303 if String.length
!name = 0
1304 then (prerr_endline
"filename missing"; exit
1)
1310 let _ = Glut.init
Sys.argv
in
1311 let () = Glut.initDisplayMode ~depth
:false ~double_buffer
:true () in
1312 let () = Glut.initWindowSize
w h in
1313 let _ = Glut.createWindow
("llpp " ^
Filename.basename
name) in
1315 let csock, ssock
= Unix.socketpair
Unix.PF_UNIX
Unix.SOCK_STREAM
0 in
1320 state.csock <- csock;
1321 state.ssock
<- ssock
;
1322 writecmd csock ("open " ^
name ^
"\000");
1324 let () = Glut.displayFunc
display in
1325 let () = Glut.reshapeFunc
reshape in
1326 let () = Glut.keyboardFunc
keyboard in
1327 let () = Glut.specialFunc
special in
1328 let () = Glut.idleFunc
(Some
idle) in
1329 let () = Glut.mouseFunc
mouse in
1330 let () = Glut.motionFunc
motion in
1331 let () = Glut.passiveMotionFunc
pmotion in
1332 let rec handlelablglutbug () =
1335 with Glut.BadEnum
"key in special_of_int" ->
1336 showtext '
!'
" LablGlut bug: special key not recognized";
1337 Glut.swapBuffers
();
1338 handlelablglutbug ()
1340 handlelablglutbug ()