/*
 * 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 HANDMOVABLEVIEW_H
#define HANDMOVABLEVIEW_H

#include <QGraphicsView>
#include <QMenu>

#include "tool/tool.h"

namespace olive
{

class HandMovableView : public QGraphicsView {
	Q_OBJECT
public:
	HandMovableView(QWidget *parent = nullptr);

	static bool WheelEventIsAZoomEvent(QWheelEvent *event);

	static qreal GetScrollZoomMultiplier(QWheelEvent *event);

	virtual void CatchUpScrollEvent()
	{
	}

protected:
	virtual void ToolChangedEvent(Tool::Item tool)
	{
		Q_UNUSED(tool)
	}

	bool HandPress(QMouseEvent *event);
	bool HandMove(QMouseEvent *event);
	bool HandRelease(QMouseEvent *event);

	void SetDefaultDragMode(DragMode mode);
	const DragMode &GetDefaultDragMode() const;

	virtual void wheelEvent(QWheelEvent *event) override;

	virtual void ZoomIntoCursorPosition(QWheelEvent *event, double multiplier,
										const QPointF &cursor_pos);

	void SetIsTimelineAxes(bool e)
	{
		is_timeline_axes_ = e;
	}

private:
	bool dragging_hand_;
	DragMode pre_hand_drag_mode_;

	DragMode default_drag_mode_;

	QPointF transformed_pos_;

	bool is_timeline_axes_;

private slots:
	void ApplicationToolChanged(Tool::Item tool);
};

}

#endif // HANDMOVABLEVIEW_H