(******************************************************************************)
(*                Claudio Sacerdoti Coen <sacerdot@cs.unibo.it>               *)
(*                                 25/09/2000                                 *)
(*                                                                            *)
(*     This is a simple test for the OCaml (LablGtk indeed) binding of the    *)
(*                             MathView widget                                *)
(******************************************************************************)

(* Callbacks *)
let jump node =
(*
 print_string ("jump: " ^ s ^ "\n") ;
 flush stdout
*) ()
;;

let selection_changed node =
(*
 print_string ("jump: " ^ s ^ "\n") ;
 flush stdout
*) ()
;;

let clicked node =
(*
 print_string "clicked: IT WORKS\n" ;
 flush stdout
*) ()
;;

let activate_t1 mathview sw () =
 mathview :=
 (GMathView.math_view ~packing:sw#add ~width:50 ~height:50
  ~use_t1_lib:true ()) ;
 ignore(!mathview#connect#jump jump) ;
 ignore(!mathview#connect#clicked clicked) ;
 ignore(!mathview#connect#selection_changed selection_changed) ;
 print_string "WIDGET RECREATED WITH T1 FONTS ACTIVATED\n" ;
;;

let load mathview () =
 !mathview#load "test.xml" ;
 print_string "load: SEEMS TO WORK\n" ;
 flush stdout
;;

exception Ok;;
let get_selection mathview () =
(*
 let selection =
  match !mathview#get_selection with
     None -> "NO SELECTION"
   | Some s -> s
 in
  print_string ("get_selection: " ^ selection ^ "\n") ;
  flush stdout
*) ()
;;

let unload mathview () =
 !mathview#unload ;
 print_string "unload: SEEMS TO WORK\n" ;
 flush stdout
;;

let get_width mathview () =
 print_string ("get_width: " ^ string_of_int (!mathview#get_width) ^ "\n") ;
 flush stdout
;;

let get_height mathview () =
 print_string ("get_height: " ^ string_of_int (!mathview#get_height) ^ "\n") ;
 flush stdout
;;

let set_adjustments mathview () =
 let adj1 = GData.adjustment () in
 let adj2 = GData.adjustment () in
  !mathview#set_adjustments adj1 adj2 ;
  adj1#set_value ((adj1#lower +. adj1#upper) /. 2.0) ;
  adj2#set_value ((adj2#lower +. adj2#upper) /. 2.0) ;
  print_string "set_adjustments: SEEM TO WORK\n" ;
  flush stdout
;;

let get_hadjustment mathview () =
 let adj = !mathview#get_hadjustment in
  adj#set_value ((adj#lower +. adj#upper) /. 2.0) ;
  print_string "get_hadjustment: SEEM TO WORK\n" ;
  flush stdout
;;

let get_vadjustment mathview () =
 let adj = !mathview#get_vadjustment in
  adj#set_value ((adj#lower +. adj#upper) /. 2.0) ;
  print_string "get_vadjustment: SEEM TO WORK\n" ;
  flush stdout
;;

let get_buffer mathview () =
 let buffer = !mathview#get_buffer in
  Gdk.Draw.rectangle buffer (Gdk.GC.create buffer) ~x:0 ~y:0
   ~width:50 ~height:50 ~filled:true () ;
  print_string "get_buffer: SEEMS TO WORK (hint: force the widget redrawing)\n";
  flush stdout
;;

let get_frame mathview () =
 let frame = !mathview#get_frame in
  frame#set_shadow_type `NONE ;
  print_string "get_frame: SEEMS TO WORK\n" ;
  flush stdout
;;

let set_font_size mathview () =
 !mathview#set_font_size 24 ;
 print_string "set_font_size: FONT IS NOW 24\n" ;
 flush stdout
;;
 
(* Widget creation *)
let main_window = GWindow.window ~title:"GtkMathView test" () in
let vbox = GPack.vbox ~packing:main_window#add () in
let sw = GBin.scrolled_window ~width:50 ~height:50 ~packing:vbox#pack () in
let mathview= ref (GMathView.math_view ~packing:sw#add ~width:50 ~height:50 ()) in
let hbox = GPack.hbox ~packing:vbox#pack () in
let button_t1=GButton.button ~label:"activate t1 fonts" ~packing:hbox#pack () in
let button_load = GButton.button ~label:"load" ~packing:hbox#pack () in
let button_get_selection = GButton.button ~label:"get_selection" ~packing:hbox#pack () in
let button_unload = GButton.button ~label:"unload" ~packing:hbox#pack () in
let button_get_width = GButton.button ~label:"get_width" ~packing:hbox#pack () in
let button_get_height = GButton.button ~label:"get_height" ~packing:hbox#pack () in
let button_set_adjustments = GButton.button ~label:"set_adjustments" ~packing:hbox#pack () in
let button_get_hadjustment = GButton.button ~label:"get_hadjustment" ~packing:hbox#pack () in
let button_get_vadjustment = GButton.button ~label:"get_vadjustment" ~packing:hbox#pack () in
let button_get_buffer = GButton.button ~label:"get_buffer" ~packing:hbox#pack () in
let button_get_frame = GButton.button ~label:"get_frame" ~packing:hbox#pack () in
let button_set_font_size = GButton.button ~label:"set_font_size" ~packing:hbox#pack () in
(* Signals connection *)
ignore(button_t1#connect#clicked (activate_t1 mathview sw)) ;
ignore(button_load#connect#clicked (load mathview)) ;
ignore(button_get_selection#connect#clicked (get_selection mathview)) ;
ignore(button_unload#connect#clicked (unload mathview)) ;
ignore(button_get_width#connect#clicked (get_width mathview)) ;
ignore(button_get_height#connect#clicked (get_height mathview)) ;
ignore(button_set_adjustments#connect#clicked (set_adjustments mathview)) ;
ignore(button_get_hadjustment#connect#clicked (get_hadjustment mathview)) ;
ignore(button_get_vadjustment#connect#clicked (get_vadjustment mathview)) ;
ignore(button_get_buffer#connect#clicked (get_buffer mathview)) ;
ignore(button_get_frame#connect#clicked (get_frame mathview)) ;
ignore(button_set_font_size#connect#clicked (set_font_size mathview)) ;
ignore(!mathview#connect#jump jump) ;
ignore(!mathview#connect#clicked clicked) ;
ignore(!mathview#connect#selection_changed selection_changed) ;
(* Main Loop *)
main_window#show () ;
GMain.Main.main ()
;;