Add svg output

4 files changed, 79 insertions, 0 deletions

diff --git a/elements/dune b/elements/dune
new file mode 100755
index 0000000..755bd05
--- /dev/null
+++ b/elements/dune
@@ -0,0 +1,7 @@
+(library
+ (name elements)
+ (libraries 
+   brr
+   brr.note
+   )
+)
diff --git a/elements/input.ml b/elements/input.ml
new file mode 100755
index 0000000..790b15d
--- /dev/null
+++ b/elements/input.ml
@@ -0,0 +1,20 @@
+open Brr
+open Brr_note
+open Note
+
+(** Create a slider element, and a signal with the value *)
+let slider ~at =
+  let slider =
+    El.input ~at () in
+
+  let event =
+    Evr.on_el
+      Ev.input (fun _ ->
+          let raw_value = El.prop El.Prop.value slider in
+          Jstr.to_int raw_value)
+      slider
+    |> S.hold (Jstr.to_int (El.prop El.Prop.value slider))
+  in
+  slider, event
+
+
diff --git a/elements/timer.ml b/elements/timer.ml
new file mode 100755
index 0000000..0a75e12
--- /dev/null
+++ b/elements/timer.ml
@@ -0,0 +1,41 @@
+open Brr_note_kit
+
+type t =
+  { mutable id : Brr.G.timer_id
+  ; send : float Note.E.send
+  ; mutable counter : Time.counter
+  }
+
+let create
+  : unit -> (t * Brr_note_kit.Time.span Note.E.t)
+  = fun () ->
+    let event, send = Note.E.create ()
+    and counter = (Time.counter ()) in
+    {id = (-1); send; counter}, event
+
+let stop
+  : t -> unit
+  = fun {id; _} ->
+    Brr.G.stop_timer id
+
+let start
+  : t -> float -> unit
+  = fun t d ->
+    let {id; send; _} = t in
+    t.counter <- Time.counter ();
+
+
+    Brr.G.stop_timer id;
+    let timer_id = Brr.G.set_interval
+        ~ms:(int_of_float @@ d *. 1000.)
+        (fun () ->
+
+           let span = Time.counter_value t.counter in
+           t.counter <- Time.counter ();
+           send span) in
+    ignore @@ Brr.G.set_timeout ~ms:0 (fun () ->  send 0.);
+    t.id <- timer_id
+
+
+let delay : t -> float
+  = fun t -> Time.counter_value t.counter
diff --git a/elements/timer.mli b/elements/timer.mli
new file mode 100755
index 0000000..0509ad0
--- /dev/null
+++ b/elements/timer.mli
@@ -0,0 +1,11 @@
+open Brr_note_kit
+
+type t
+
+val create : unit -> t * Time.span Note.E.t
+
+val start: t -> float -> unit
+
+val stop: t -> unit
+
+val delay : t -> float