/*
 * Olive Community Edition - Non-Linear Video Editor
 * Copyright (C) 2025 Olive CE Team
 *
 * This program 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.
 *
 * This program 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef RATIONALSLIDER_H
#define RATIONALSLIDER_H

#include <olive/core/core.h>
#include <QMouseEvent>

#include "base/decimalsliderbase.h"

namespace olive
{

using namespace core;

/**
 * @brief A olive::rational based slider
 *
 * A slider that can display rationals as either timecode (drop or non-drop), a timestamp (frames),
 * or a float (seconds).
 */
class RationalSlider : public DecimalSliderBase {
	Q_OBJECT
public:
	/**
   * @brief enum containing the possibly display types
   */
	enum DisplayType { kTime, kFloat, kRational };

	RationalSlider(QWidget *parent = nullptr);

	/**
   * @brief Returns the sliders value as a rational
   */
	rational GetValue();

	/**
   * @brief Sets the sliders default value
   */
	void SetDefaultValue(const rational &r);

	/**
   * @brief Sets the sliders minimum value
   */
	void SetMinimum(const rational &d);

	/**
   * @brief Sets the sliders maximum value
   */
	void SetMaximum(const rational &d);

	/**
   * @brief Sets the display type of the slider
   */
	void SetDisplayType(const DisplayType &type);

	/**
   * @brief Set whether the user can change the display type or not
   */
	void SetLockDisplayType(bool e);

	/**
   * @brief Get whether the user can change the display type or not
   */
	bool GetLockDisplayType();

	/**
   * @brief Hide display type in menu
   */
	void DisableDisplayType(DisplayType type);

public slots:
	/**
   * @brief Sets the sliders timebase which is also the minimum increment of the slider
   */
	void SetTimebase(const rational &timebase);

	/**
   * @brief Sets the sliders value
   */
	void SetValue(const rational &d);

protected:
	virtual QString ValueToString(const QVariant &v) const override;

	virtual QVariant StringToValue(const QString &s, bool *ok) const override;

	virtual QVariant
	AdjustDragDistanceInternal(const QVariant &start,
							   const double &drag) const override;

	virtual void ValueSignalEvent(const QVariant &v) override;

	virtual bool ValueGreaterThan(const QVariant &lhs,
								  const QVariant &rhs) const override;

	virtual bool ValueLessThan(const QVariant &lhs,
							   const QVariant &rhs) const override;

signals:
	void ValueChanged(rational);

private slots:
	void ShowDisplayTypeMenu();

	void SetDisplayTypeFromMenu();

private:
	DisplayType display_type_;

	rational timebase_;

	bool lock_display_type_;

	QVector<DisplayType> disabled_;
};

}

#endif // RATIONALSLIDER_H