/**
  * @RDE_HEADER@
  * replaces the original header of the view - offers a user-movable position mark
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Mike Wille, SLSE, 2014-10-01
  */

#pragma once

#include "EventTools.h"

#include <QHeaderView>


class QPainter;

namespace LtsTimelineClassic
{

/**
 * @brief replaces the original header of the view - offers a user-movable position mark
 * since Qt does NOT provide delegates for QHeaderViews (although it inherits from QAbstractItemView),
 * we must reimplement this class and use paintSection(..) instead
 */
class TimelineHeaderView : public QHeaderView
{
  Q_OBJECT

public:
  explicit TimelineHeaderView(QWidget *parent = nullptr);

  /**
   * @brief refreshes the header view data, which triggers all views to refresh also
   */
  void refreshData();
  void setLiveTime(qint64 time);

private:
  qint64 m_posMarkTime; // posMarkTime is set exactly ONE time when clicked on the header > then the time will be et'd so that posMarkPos can vary
  QRect m_paintingRange; // seen from the widget itself (so y is 0!)
  // double posMark; DO NOT USE POSMARK INSTEAD OF POSMARKTIME !
  qint64 m_liveTime;

protected:
  /**
   * @brief paints the coherant section with a position mark (if set)
   * @param painter painter which draws on the coherant section
   * @param rect boundaries to draw in
   * @param logicalIndex which section to draw on
   */
  void paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const;

signals:
  /**
   * @brief gives new position mark pixel position to the view
   * @param pos pixel position of new position mark
   */
  void signalSetPosMarkPos(int pos); // header clicked -> new position mark position

public slots:

  /**
   * @brief sets new values to this class
   * @param index affected column
   * @param oldSize old width of column
   * @param newSize new width of column
   */
  void slotSectionResized(int logicalIndex, int oldSize, int newSize);

  /**
   * @brief setPosMarkTime sets m_posMarkTime - should be called if posMarker was set manually, not with mouse in header!
   * @param time time to set the posMarker's position to
   */
  void setPosMarkTime(qint64 time);

private:

  /**
   * @brief sets new position of the position mark in all necessary classes
   */
  void setPosMarkPos();
};

}