src/io/loop.h - main - Mr.Stalin/FreeFT

// Copyright (C) Krzysztof Jakubowski <nadult@fastmail.fm>
// This file is part of FreeFT. See license.txt for details.

#pragma once

#include "base.h"

namespace io {

class Loop {
  public:
	enum TransitionMode { trans_normal, trans_left, trans_right };

	Loop();
	virtual ~Loop();

	bool tick(double time_diff);
	void draw(Canvas2D &);
	void exit();

	void startTransition(Color from, Color to, TransitionMode mode, float length);
	bool isTransitioning() const;

  protected:
	virtual bool onTick(double) = 0;
	virtual void onDraw(Canvas2D &) = 0;
	virtual void onTransitionFinished() {}

  private:
	struct Transition {
		void draw(Canvas2D &, const IRect &rect) const;

		FColor from, to;
		TransitionMode mode;
		float pos, length;
	};

	Transition m_transition;
	bool m_is_transitioning;
	bool m_is_exiting;
};

using PLoop = Dynamic<Loop>;

}