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gui.ml
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gui.ml
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(*
* Author: Kaustuv Chaudhuri <kaustuv.chaudhuri@inria.fr>
* Copyright (C) 2013 Inria (Institut National de Recherche
* en Informatique et en Automatique)
* See LICENSE for licensing details.
*)
open Batteries
open Syntax
let wash_file = Filename.concat Syntax_tex.pdir "wash_form1.png"
type mode =
| Imm of form
| File of string * Action.history
module type Param = sig
val mode : mode
end
module Run (Param : Param) =
struct
let state = ref (
match Param.mode with
| Imm f -> Action.init f
| File (fin, hi) -> hi
)
let main_win =
let win = GWindow.window
~title:"Profound"
~border_width:3
~deletable:true () in
let sw = Gdk.Screen.width () in
let sh = Gdk.Screen.height () in
(* [HACK] *)
Log.(log INFO "Screen: %d x %d" sw sh) ;
if sw > 1920 || sh > 1080 then Syntax_tex.set_dpi 240 ;
win#misc#set_size_request ~width:(sw * 3/5) ~height:(sh * 4/5) () ;
win#misc#modify_bg [`NORMAL, `NAME "ivory" ] ;
ignore (win#event#connect#delete ~callback:(fun _ -> false)) ;
ignore (win#connect#destroy ~callback:GMain.Main.quit) ;
win
let awaiting_quit = ref false
let quit () =
awaiting_quit := true ;
main_win#destroy () ;
!state
let (disp, stat) =
let box = GPack.vbox ~packing:main_win#add () in
let sw = GBin.scrolled_window
~hpolicy:`AUTOMATIC ~vpolicy:`AUTOMATIC
~packing:box#add () in
let disp = GMisc.image
~packing:sw#add_with_viewport () in
ignore (GMisc.separator `HORIZONTAL ~packing:(box#pack ~expand:false) ()) ;
let sbar = GMisc.statusbar
~packing:(box#pack ~expand:false) () in
let stat = sbar#new_context ~name:"default" in
(disp, stat)
let flash fmt =
Printf.ksprintf (fun txt ->
if not !awaiting_quit then
stat#flash ~delay:2000 txt
) fmt
let read_thing ~title ~label ~parse =
let dwin = GWindow.dialog
~parent:main_win ~title
~modal:true
~position:`CENTER_ON_PARENT
() in
dwin#vbox#misc#set_size_request ~width:300 () ;
dwin#add_button_stock `OK `OK ;
dwin#add_button_stock `CANCEL `CANCEL ;
dwin#set_default_response `CANCEL ;
let _lab = GMisc.label
~xalign:0.
~packing:(dwin#vbox#pack ~expand:false)
~text:label
() in
let ebox = GEdit.entry
~text:""
~width:80
~packing:(dwin#vbox#pack ~expand:true)
() in
ebox#misc#grab_focus () ;
let handler key =
begin
let ks = GdkEvent.Key.keyval key in
if ks = GdkKeysyms._Return then (dwin#response `OK ; true)
else if ks = GdkKeysyms._Escape then (dwin#response `CANCEL ; true)
else false
end in
ignore (dwin#event#connect#key_press ~callback:handler) ;
let resp = dwin#run () in
let txt = String.trim ebox#text in
dwin#destroy () ;
begin match resp with
| `OK ->
begin
try parse txt with
| Syntax_io.Parsing msg ->
flash "Failed to parse %S: %s" txt msg ;
raise Action.(Action Cancelled)
end
| _ ->
raise Action.(Action Cancelled)
end
let read_term x cx =
let title = "Term input" in
let label = Printf.sprintf "Enter a witness for %s:" (Idt.src_rep x) in
let parse txt = Syntax_io.term_of_string cx txt in
read_thing ~title ~label ~parse
let read_form cx =
let title = "Formula input" in
let label = "Enter a cut formula:" in
let parse txt = Syntax_io.form_of_string cx txt in
read_thing ~title ~label ~parse
(* key processing *)
type key = {
code : Gdk.keysym ;
c : bool ;
s : bool ;
}
type adesc = {
action : Action.t ;
desc : string ;
}
type kmap = (key, adesc list) Map.t
let add_action km key act : kmap =
begin match Map.Exceptionless.find key km with
| Some acts ->
Map.add key (act :: acts) km
| None ->
Map.add key [act] km
end
let (klist, kmap) =
Action.(GdkKeysyms.(
let c = true in
let s = true in
let klist = ref [] in
let kmap = ref Map.empty in
let add ?(e = false) ?(c = false) ?(s = false) code ad =
let key = { code ; c ; s } in
if ad.desc <> "" then klist := ad :: !klist ;
kmap := add_action !kmap key ad
in
add _Down { action = action_descend
; desc = "" } ;
add _Up { action = action_ascend
; desc = "" } ;
add ~s _Up { action = action_ascend_to_top
; desc = "" } ;
add _Left { action = action_left
; desc = "" } ;
add _Right { action = action_right
; desc = "" } ;
add _Return { action = action_mark_source
; desc = "Enter=mark" } ;
add _Return { action = action_unmark_source
; desc = "Enter=unmark" } ;
add _Return { action = action_complete_link
; desc = "Enter=link" } ;
add _Escape { action = action_reset
; desc = "Esc=reset" } ;
add _Delete { action = action_zero
; desc = "Del=kill" } ;
add ~s _Delete { action = action_weaken
; desc = "Shift-Del=weaken" } ;
add ~s _Return { action = action_contract
; desc = "Shift-Enter=contract" } ;
add ~s _question { action = action_derelict
; desc = "?=derelict" } ;
add ~s _Return { action = action_witness ~read:read_term
; desc = "Shift-Enter=witness" } ;
add ~c _Return { action = action_cut ~read:read_form
; desc = "^Enter=cut" } ;
add ~c _z { action = action_undo
; desc = "^Z=undo" } ;
add ~c _Down { action = action_undo
; desc = "" } ;
add ~c _y { action = action_redo
; desc = "^Y=redo" } ;
add ~c ~s _Z { action = action_redo
; desc = "" } ;
add ~c _Up { action = action_redo
; desc = "" } ;
let action_more_history = {
enabled = (fun _ -> true) ;
perform = (fun hi ->
incr Syntax_tex.max_hist ;
Log.(log INFO "Now showing %d history line(s)" !Syntax_tex.max_hist) ;
hi
) } in
add ~s _plus { action = action_more_history
; desc = "" } ;
let action_less_history = {
enabled = (fun _ -> !Syntax_tex.max_hist >= 1) ;
perform = (fun hi ->
decr Syntax_tex.max_hist ;
Log.(log INFO "Now showing %d history line(s)" !Syntax_tex.max_hist) ;
hi
) } in
add _minus { action = action_less_history
; desc = "" } ;
begin match Param.mode with
| Imm _ ->
let action_quit = {
enabled = (fun _ -> true) ;
perform = (fun _ -> quit ()) ;
} in
add ~c _q { action = action_quit ; desc = "" }
| File (fin, _) ->
let action_quit = {
enabled = (fun _ -> true) ;
perform = begin fun hi ->
Syntax_io.save_file fin hi ;
quit ()
end
} in
add ~c _q { action = action_quit ; desc = "" } ;
let action_save = {
enabled = (fun _ -> true) ;
perform = begin fun hi ->
Syntax_io.save_file fin hi ;
hi
end
} in
add ~c _s { action = action_save ; desc = "" }
end ;
(List.rev !klist, !kmap)
))
exception Handled
let explain_keys () =
let buf = Buffer.create 19 in
List.iter begin function
| {desc ; action} when desc <> "" && action.Action.enabled !state ->
Buffer.add_string buf (desc ^ "; ")
| _ -> ()
end klist ;
Buffer.add_string buf "^Q quit" ;
Buffer.contents buf
let redisplay () =
if not !awaiting_quit then begin
Syntax_tex.wash_forms (Action.render !state) ;
let pix = GdkPixbuf.from_file wash_file in
stat#pop () ;
ignore (stat#push (explain_keys ())) ;
disp#set_pixbuf pix
end
let () = redisplay ()
let handle_key kt =
let kst = GdkEvent.Key.state kt in
let key = { code = GdkEvent.Key.keyval kt
; c = List.mem `CONTROL kst
; s = List.mem `SHIFT kst } in
begin match Map.Exceptionless.find key kmap with
| Some ads ->
begin try (
List.iter begin
fun ad ->
let act = ad.action in
if act.Action.enabled !state then begin
try
state := act.Action.perform !state ;
redisplay () ;
raise Handled
with
| Action.Action err -> flash "%s" (Action.explain err)
end else ()
end ads ;
false
) with
| Action.Action err ->
Log.(log DEBUG "Action error: %s" (Action.explain err)) ;
true
| Handled -> true
end
| None -> false
end
let _ = main_win#event#connect#key_press ~callback:handle_key
let () = main_win#show ()
let () = GMain.Main.main ()
end
let run mode =
let module Param = struct let mode = mode end in
let module R = Run (Param) in
()