#pragma once

#include "GUI.h" // for Simple_window only (doesn't really belong in Window.h)

using namespace Graph_lib;

// Simple_window is basic scaffolding for ultra-simple interaction with graphics
// it provides one window with one "next" button for ultra-simple animation
struct Simple_window : Graph_lib::Window
{
	Simple_window(Point xy, int w, int h, const string& title)
		: Window(xy, w, h, title),
		  next_button(Point{x_max() - 70, 0}, 70, 20, "Next", cb_next),
		  button_pushed(false)
	{
		attach(next_button);
	}

	void wait_for_button()
	// modified event loop
	// handle all events (as per default), but quit when button_pushed
	// becomes true this allows graphics without control inversion
	{
		while (!button_pushed)
			Fl::wait();
		button_pushed = false;
		Fl::redraw();
	}

	Button next_button;

private:
	bool button_pushed;

	static void cb_next(Address,
						Address addr) // callback for next_button
									  //      {
									  //      reference_to<Simple_window>(addr).next();
									  //      }
	{
		static_cast<Simple_window*>(addr)->next();
	}

	void next()
	{
		button_pushed = true;
	}
};
