urgh... stuck with how to implement cursor/focus etc. Decided to try to integrate Nottui and Nottui_widgets directly istead of reinventing another wheel.

boot_js.ml

@@ -27,23 +27,20 @@ let scale_canvas (canvas : Dom_html.canvasElement Js.t) =
   canvas##.style##.width := width;
   canvas##.style##.height := height
 
-let _ =
-  let canvas =
-    Js.Unsafe.coerce (Dom_html.getElementById_exn "canvas")
-  in
+let webgl_initialize canvas =
   scale_canvas canvas;
-  let webgl_ctx =
-    (* Graphv requires a stencil buffer to work properly *)
-    let attrs = WebGL.defaultContextAttributes in
-    attrs##.stencil := Js._true;
-    match
-      WebGL.getContextWithAttributes canvas attrs |> Js.Opt.to_option
-    with
-    | None ->
-        print_endline "Sorry your browser does not support WebGL";
-        raise Exit
-    | Some ctx -> ctx
-  in
+  (* Graphv requires a stencil buffer to work properly *)
+  let attrs = WebGL.defaultContextAttributes in
+  attrs##.stencil := Js._true;
+  match
+    WebGL.getContextWithAttributes canvas attrs |> Js.Opt.to_option
+  with
+  | None ->
+      print_endline "Sorry your browser does not support WebGL";
+      raise Exit
+  | Some ctx -> ctx
+
+let graphv_initialize webgl_ctx =
   let open NVG in
   let vg =
     create
@@ -53,55 +50,55 @@ let _ =
   (* File in this case is actually the CSS font name *)
   Text.create vg ~name:"sans" ~file:"sans" |> ignore;
   webgl_ctx##clearColor 0.3 0.3 0.32 1.;
+  vg
 
-  (*
-    let render ev =
-    webgl_ctx##clear
-      (webgl_ctx##._COLOR_BUFFER_BIT_
-      lor webgl_ctx##._DEPTH_BUFFER_BIT_
-      lor webgl_ctx##._STENCIL_BUFFER_BIT_);
-    let device_ratio = Dom_html.window##.devicePixelRatio in
-    begin_frame vg ~width:canvas##.width ~height:canvas##.height
-      ~device_ratio;
-    Transform.scale vg ~x:device_ratio ~y:device_ratio;
-    ignore Human.Panel.Ui.(panel vg Gg.P2.o test ev);
-    (*
-    Path.begin_ vg ;
-    Path.rect vg ~x:40. ~y:40. ~w:320. ~h:320. ;
-    set_fill_color vg ~color:Color.(rgba ~r:154 ~g:203 ~b:255 ~a:200) ;
-    fill vg ;
-    Transform.translate vg ~x:200. ~y:200. ;
-    Transform.rotate vg ~angle:(time *. 0.0005) ;
-    Text.set_font_face vg ~name:"sans" ;
-    Text.set_size vg ~size:48. ;
-    Text.set_align vg ~align:Align.(center lor middle) ;
-    set_fill_color vg ~color:Color.white ;
-    Text.text vg ~x:0. ~y:0. "Hello World!" ; *)
-    NVG.end_frame vg
+let request_animation_frame () =
+  let t, s = Lwt.wait () in
+  let (_ : Dom_html.animation_frame_request_id) =
+    Dom_html.window##requestAnimationFrame
+      (Js.wrap_callback (fun (time : float) -> Lwt.wakeup s time))
   in
-  Dom_html.window##requestAnimationFrame
-    (Js.wrap_callback (fun _ -> render Human.Event.empty))
-  |> ignore;*)
+  t
+
+let request_render canvas webgl_ctx vg
+    (render : NVG.t -> ?time:float -> Gg.p2 -> Gg.p2 Lwt.t) =
+  request_animation_frame () >>= fun time ->
+  webgl_ctx##clear
+    (webgl_ctx##._COLOR_BUFFER_BIT_
+    lor webgl_ctx##._DEPTH_BUFFER_BIT_
+    lor webgl_ctx##._STENCIL_BUFFER_BIT_);
+  let device_ratio = Dom_html.window##.devicePixelRatio in
+  NVG.begin_frame vg ~width:canvas##.width ~height:canvas##.height
+    ~device_ratio;
+  NVG.Transform.scale vg ~x:device_ratio ~y:device_ratio;
+  render vg ~time Gg.P2.o >>= fun _p ->
+  (*  Logs.debug (fun m -> m "Drawing finished at point: %a" Gg.V2.pp p); *)
+  NVG.end_frame vg;
+  Lwt.return_unit
+
+let _ =
+  let canvas =
+    Js.Unsafe.coerce (Dom_html.getElementById_exn "canvas")
+  in
+  let webgl_ctx = webgl_initialize canvas in
+  let vg = graphv_initialize webgl_ctx in
   let open Js_of_ocaml_lwt.Lwt_js_events in
+  let page_var = Lwd.var Human.Panel.Ui.empty in
+
   async (fun () ->
-      buffered_loop (make_event Dom_html.Event.keydown)
-        Dom_html.document (fun ev _ ->
-          webgl_ctx##clear
-            (webgl_ctx##._COLOR_BUFFER_BIT_
-            lor webgl_ctx##._DEPTH_BUFFER_BIT_
-            lor webgl_ctx##._STENCIL_BUFFER_BIT_);
-          let device_ratio = Dom_html.window##.devicePixelRatio in
-          begin_frame vg ~width:canvas##.width ~height:canvas##.height
-            ~device_ratio;
-          Transform.scale vg ~x:device_ratio ~y:device_ratio;
-          Human.Panel.Ui.(
-            render_lwt vg Gg.P2.o
-              (Human.Event_js.evt_of_jskey `Press ev))
-          >>= fun p ->
-          Logs.debug (fun m ->
-              m "Drawing finished at point: %a" Gg.V2.pp p);
-          NVG.end_frame vg;
-          Lwt.return_unit))
+      Human.Panel.Ui.boot_page >>= fun page ->
+      Lwd.set page_var page;
+      let render = Human.Panel.Ui.renderer page_var in
+      request_render canvas webgl_ctx vg render >>= fun () ->
+      buffered_loop
+        (make_event Dom_html.Event.keydown)
+        Dom_html.document
+        Human.(
+          fun ev _ ->
+            Lwd.set page_var
+              (Panel.Ui.handle_event (Lwd.peek page_var)
+                 (Event_js.evt_of_jskey `Press ev));
+            request_render canvas webgl_ctx vg render))
 
 (* Dom_html.document##.onkeydown
    := Dom.handler (fun (evt : Dom_html.keyboardEvent Js.t) ->

doc/console.drawio

@@ -1 +0,0 @@
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doc/deck_example.ml

@@ -1,17 +0,0 @@
-let rec copy_blocks buffer r w =
-  match%lwt Lwt_io.read_into r buffer 0 (Bytes.length buffer) with
-  | 0 -> Lwt.return_unit
-  | bytes_read ->
-    let%lwt () = Lwt_io.write_from_exactly w buffer 0 bytes_read in
-    copy_blocks buffer r w
-
-let run () =
-  ((let%lwt server =
-      Lwt_io.establish_server (Lwt_unix.ADDR_INET (Unix.inet_addr_any, 8765))
-        (fun (r, w) ->
-           let buffer = Bytes.create (16 * 1024) in
-           copy_blocks buffer r w)
-    in
-    Lwt.return server) : Lwt_io.server Lwt.t) |> ignore
-
-let () =  Lwt_main.run   run ();

doc/factorial.drawio

@@ -1 +0,0 @@
-<mxfile host="Electron" modified="2023-03-14T02:21:12.395Z" agent="5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/20.8.16 Chrome/106.0.5249.199 Electron/21.3.5 Safari/537.36" etag="kySTQQLOUsgllAWFhiTX" version="20.8.16" type="device"><diagram name="Page-1" id="LQ51MIGZ5u8MJkVY-xBH">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</diagram></mxfile>