#pragma once

#include <LtsTimeline/ltstimeline_export.h>

#include <QMouseEvent>


namespace LtsTimeline
{

class Track;
class TimelineView;


class LTSTIMELINE_EXPORT TimelineViewResizeHandler
{

public:
  enum class ResizePosition { eNone, eStart, eEnd };

  explicit TimelineViewResizeHandler(TimelineView *view);
  virtual ~TimelineViewResizeHandler();

  virtual void mouseMoveEvent(QMouseEvent *e);
  virtual void mousePressEvent(QMouseEvent *e);
  virtual void mouseReleaseEvent(QMouseEvent *e);

  virtual bool isActive() const { return m_currentTrackId != -1 && m_currentItemId != -1 && m_resizePos != ResizePosition::eNone; }

private:
  virtual qint64 localSnapTime(int pos) const;
  virtual qint64 globalSnapTime(int pos) const;

protected:
  TimelineView *m_view{nullptr};
  int m_currentTrackId{-1};
  int m_currentItemId{-1};
  ResizePosition m_resizePos{ResizePosition::eNone};

};

}