improved reactive ui and events

src/lib/ui/UIEvents.hx

@@ -0,0 +1,15 @@
+package lib.ui;
+
+import util.Vec.Vec2;
+import kernel.ButtonType;
+using tink.CoreApi;
+
+typedef UIEvents = {
+	public var ?onClick:Callback<{button:ButtonType, pos:Vec2<Int>}>;
+	public var ?onKey:Callback<{keyCode:Int, isHeld:Bool}>;
+	public var ?onKeyUp:Callback<Int>;
+	public var ?onMouseDrag:Callback<{button:ButtonType, pos:Vec2<Int>}>;
+	public var ?onMouseScroll:Callback<{dir:Int, pos:Vec2<Int>}>;
+	public var ?onMouseUp:Callback<{button:ButtonType, pos:Vec2<Int>}>;
+	public var ?onPaste:Callback<String>;
+}