77 lines
1.8 KiB
OCaml
77 lines
1.8 KiB
OCaml
open Nottui
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open Notty
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type t = { w : int; h : int; }
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let render_message ~width ~width_nicknames msg =
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(* (* FIXME: split doesn't work *)
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let width_message =
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max 1 (width - width_nicknames - 1)
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in
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let message = Message.split_at ~len:width_message msg in *)
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let _ = width in
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let message = [Message.message msg] in
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let color = A.white in
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let rest =
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List.map @@ fun msg ->
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I.hcat
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[ I.void width_nicknames 1
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; I.strf "│"
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; I.strf "%s" msg
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]
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in
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I.vcat
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(I.hcat
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[ I.strf " "
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; I.hsnap ~align:`Right width_nicknames
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(I.strf ~attr:A.(fg color) "%s" (Message.nickname msg))
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; I.strf "│"
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; I.strf "%s" (List.hd message)
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]
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:: rest (List.tl message))
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let width_nicknames msgs =
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let f msg acc = max (String.length (Message.nickname msg)) acc in
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Rb.iter ~f msgs 0
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let render { w; h } msgs =
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let idx = ref (Rb.length msgs - 1) in
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let image = ref I.empty in
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let message = ref I.empty in
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let width_nicknames = width_nicknames msgs in
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while
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!idx >= 0
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&&
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(message :=
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render_message ~width_nicknames ~width:w msgs.Rb.%[!idx];
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I.height !message + I.height !image <= h)
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do
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(image := I.(!message <-> !image));
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decr idx
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done;
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Ui.atom (I.vsnap ~align:`Bottom h !image)
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let make w =
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let ( let* ) x f = Lwd.bind ~f x in
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let ( let+ ) x f = Lwd.map ~f x in
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let ( and+ ) = Lwd.map2 ~f:(fun x y -> (x, y)) in
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let state = Lwd.var { w = 0; h = 0 } in
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let* document =
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let+ state = Lwd.get state
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and+ buffer = Lwd.get w in
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render state buffer
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in
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let update_size ~w ~h =
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let state' = Lwd.peek state in
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if state'.w <> w || state'.h <> h then Lwd.set state { w; h }
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in
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let measure_size document =
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Ui.size_sensor update_size (Ui.resize ~sh:1 document)
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in
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Lwd.return (measure_size document)
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