ableos-idl/sysdata/libraries/horizon_api/src/ui.hb

stn := @use("../../../libraries/stn/src/lib.hb");
.{string, log} := stn;
.{Vec2} := stn.math

render := @use("../../../libraries/render/src/lib.hb");
.{Surface} := render;
.{Font} := render.text

UI := struct {raw: ^u8, raw_length: uint, is_dirty: bool, surface: Surface, // Each child has their WidgetType as their first byte
// children: ^^u8,
}

render_ui := fn(surface: Surface, ui: UI): void {
	if ui.is_dirty {
		render.clear(ui.surface, render.black)
		ui.is_dirty = false
	}
	pos := Vec2(uint).(0, 0)
	render.put_surface(surface, ui.surface, pos, false)
}

sexpr_parser := fn(sexpr: ^u8): UI {
	cursor := sexpr
	paren_balance := 0
	loop {
		if *cursor == 0 {
			if paren_balance != 0 {
				log.error("Unbalanced Parens\0")
			}
			break
		} else if *cursor == 40 {
			log.info("Open paren\0")
			paren_balance += 1
		} else if *cursor == 41 {
			log.info("Closed paren\0")
			paren_balance -= 1
		}

		cursor += 1
	}

	length := string.length(sexpr)

	ui_surface := render.new_surface(100, 100)

	return UI.(sexpr, length, true, ui_surface)
}