/**
* @RDE_HEADER@
* Bitfield Widget for bitwise displaying and editing of quint8 values
* Created by Christian Kaemmerer
* $Id$
* $HeadURL$
* $Author$
*/

#pragma once

#include <QWidget>
#include <QMouseEvent>

#include "lts_widgets_export.h"


namespace LtsWidgets
{

class LTSWIDGETS_EXPORT LtsBitfieldWidget : public QWidget
{
  Q_OBJECT

  Q_PROPERTY(quint8 value         READ value         WRITE setValue         NOTIFY valueChanged)
  Q_PROPERTY(bool   isEditable    READ isEditable    WRITE setEditable      NOTIFY isEditableChanged)
  Q_PROPERTY(bool   hasCaption    READ hasCaption    WRITE setHasCaption    NOTIFY hasCaptionChanged)
  Q_PROPERTY(QColor onColor       READ onColor       WRITE setOnColor)
  Q_PROPERTY(QColor offColor      READ offColor      WRITE setOffColor)

public:
  explicit LtsBitfieldWidget(QWidget *parent = nullptr, quint8 value = 0);

signals:
  void valueChanged(quint8 newValue);
  void isEditableChanged(bool option);
  void hasCaptionChanged(bool option);

public slots:
  /**
   * @brief setvalue
   * sets m_value to the given quint8
   * @param quint8 value
   */
  void setValue(quint8 value);

  /**
   * @brief setIsEditable
   * sets m_isEditable to option.
   * true meaning the value of the widget can be changed via mousePressEvent
   * @param bool option
   */
  void setEditable(bool editable);

  /**
   * @brief setHasCaption
   * sets m_hasCaption to 0 or 1 which toggels if text should be
   * drawn on each bitGraphic
   * @param bool hasCaption
   */
  void setHasCaption(bool hasCaption);

  /**
   * @brief setOnColor
   * sets the onColor for m_bitGraphic
   * @param QColor onColor
   */
  void setOnColor(const QColor &onColor);

  /**
   * @brief setOffColor
   * sets the offColor for m_bitGraphic
   * @param QColor offColor
   */
  void setOffColor(const QColor &offColor);


public:
  /**
   * @brief value
   * get the current value
   * @return quint8 of current value
   */
  quint8 value() const { return m_value; }

  /**
   * @brief isEditable
   * get the current state of editability
   * @return bool of editability state
   */
  bool isEditable() const { return m_isEditable; }

  /**
   * @brief hasCaption
   * gets state of m_hasCaption
   * @return bool hasCaption
   */
  bool hasCaption() const { return m_hasCaption; }

  /**
   * @brief onColor
   * gets the onColor for m_bitGraphic
   * @return QColor m_onColor
   */
  QColor onColor() const {return m_onColor;}

  /**
   * @brief offColor
   * gets the offColor for m_bitGraphic
   * @return QColor m_offColor
   */
  QColor offColor() const {return m_offColor;}

private:
  /**
   * @brief mousePressEvent
   * Checks if the click position falls within any of the bit rectangles. If there
   * is a match the value of that bit gets flipped
   * @param event QMouseEvent
   */
  void mousePressEvent(QMouseEvent *event) override;

  /**
   * @brief paintEvent
   * Draws m_bitGraphic.Size() rectangles and depending on the bit value of m_value draw either
   * a onColor rectangle with a offColor 1 or a offColor rectangle with a onColor 0
   * @param pe QPaintEvent (isn't used to do anything)
   */
  void paintEvent(QPaintEvent *pe) override;

private:
  quint8 m_value = 0;

  bool   m_isEditable = true;
  bool   m_hasCaption = true;

  QColor m_onColor  = Qt::black;
  QColor m_offColor = Qt::white;
};

} // namespace LtsWidgets