/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org

Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.

Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
*/
#pragma once

#include "ui/button.h"
#include "styles/style_media_player.h"

namespace Media {
namespace Player {

class PlayButtonLayout {
public:
	enum class State {
		Play,
		Pause,
		Cancel,
	};
	using UpdateCallback = FloatAnimation::Callback;
	PlayButtonLayout(const style::MediaPlayerButton &st, UpdateCallback &&callback);

	void setState(State state);
	void finishTransform();
	void paint(Painter &p, const QBrush &brush);

private:
	void animationCallback();
	void startTransform(float64 from, float64 to);

	void paintPlay(Painter &p, const QBrush &brush);
	void paintPlayToPause(Painter &p, const QBrush &brush, float64 progress);
	void paintPlayToCancel(Painter &p, const QBrush &brush, float64 progress);
	void paintPauseToCancel(Painter &p, const QBrush &brush, float64 progress);

	const style::MediaPlayerButton &_st;

	State _state = State::Play;
	State _oldState = State::Play;
	State _nextState = State::Play;
	FloatAnimation _transformProgress;
	bool _transformBackward = false;

	UpdateCallback _callback;

};

} // namespace Clip
} // namespace Media