File: canvas_bind.ml

package info (click to toggle)
ocaml 3.11.2-2
  • links: PTS, VCS
  • area: main
  • in suites: squeeze
  • size: 18,536 kB
  • ctags: 25,262
  • sloc: ml: 160,855; ansic: 39,174; sh: 5,564; asm: 4,502; lisp: 3,998; makefile: 2,374; perl: 82; sed: 19; tcl: 2
file content (52 lines) | stat: -rw-r--r-- 1,682 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
##ifdef CAMLTK

let bind widget tag eventsequence action =
  tkCommand [| 
    cCAMLtoTKwidget widget_canvas_table widget;
    TkToken "bind";
    cCAMLtoTKtagOrId tag;
    cCAMLtoTKeventSequence eventsequence;
    begin match action with
    | BindRemove -> TkToken ""
    | BindSet (what, f) ->
        let cbId = register_callback widget (wrapeventInfo f what) in
        TkToken ("camlcb " ^ cbId ^ (writeeventField what))
    | BindSetBreakable (what, f) ->
        let cbId = register_callback widget (wrapeventInfo f what) in
        TkToken ("camlcb " ^ cbId ^ (writeeventField what)^
                 " ; if { $BreakBindingsSequence == 1 } then { break ;} ; \
                   set BreakBindingsSequence 0")
    | BindExtend (what, f) ->
        let cbId = register_callback widget (wrapeventInfo f what) in
        TkToken ("+camlcb " ^ cbId ^ (writeeventField what))
    end 
 |]
;;

##else

let bind ~events
    ?(extend = false) ?(breakable = false) ?(fields = [])
    ?action widget tag =
  tkCommand
    [| cCAMLtoTKwidget widget;
       TkToken "bind";
       cCAMLtoTKtagOrId tag;
       cCAMLtoTKeventSequence events;
       begin match action with None -> TkToken ""
       | Some f ->
           let cbId =
             register_callback widget ~callback: (wrapeventInfo f fields) in
           let cb = if extend then "+camlcb " else "camlcb " in
           let cb = cb ^ cbId ^ writeeventField fields in
           let cb =
             if breakable then 
               cb ^ " ; if { $BreakBindingsSequence == 1 } then { break ;}"
               ^ " ; set BreakBindingsSequence 0"
             else cb in
           TkToken cb
       end
     |]
;;

##endif