#pragma once
 
#ifndef FRAMENVIGATOR_H
#define FRAMENVIGATOR_H
 
// TnzCore includes
#include "tcommon.h"
 
// TnzQt includes
#include "toonzqt/intfield.h"
 
// Qt includes
#include <QWidget>
#include <QToolBar>
 
#undef DVAPI
#undef DVVAR
#ifdef TOONZQT_EXPORTS
#define DVAPI DV_EXPORT_API
#define DVVAR DV_EXPORT_VAR
#else
#define DVAPI DV_IMPORT_API
#define DVVAR DV_IMPORT_VAR
#endif
 
//======================================================
 
//    Forward declarations
 
class TFrameHandle;
 
//======================================================
 
//*****************************************************************************
//    KeyframeNavigator  declaration
//*****************************************************************************
 
/*!
  \brief    The FrameNavigator is a simple toolbar widget showing a numerical
            representation of an integer timeline.
 
  \details  A FrameNavigator is a TFrameHandle viewer composed of a line edit
            widget showing the current frame number, and a pair of directional
            arrow buttons that move to adjacent frames.
 
  \remark   The text field actually visualizes the internal integer \p m_frame
  \a +1
            (e.g. when \p m_frame is 0 then 1 is visualized).
*/
 
class DVAPI FrameNavigator final : public QToolBar {
  Q_OBJECT
 
  TFrameHandle *m_frameHandle;
 
  int m_frame;
  DVGui::IntLineEdit *m_lineEdit;
 
public:
  FrameNavigator(QWidget *parent = 0);
  ~FrameNavigator() {}
 
  int getFrame() const { return m_frame; }
 
  void setFrameHandle(TFrameHandle *);  //!< Attaches the navigator to the
                                        //! specified frameHandle.
  //!  \remark    Detaches from any previously attached frame handle.
 
  bool anyWidgetHasFocus();
signals:
 
  void frameSwitched();
 
public slots:
 
  void setFrame(
      int frame,
      bool notifyFrameHandler);  //!< Sets the navigator's current frame.
                                 //!  \deprecated  Remove the bool.
  void prevFrame() {
    setFrame(m_frame - 1, true);
  }  //!< Move to previous frame.
  void nextFrame() { setFrame(m_frame + 1, true); }  //!< Move to next frame.
 
protected:
  void showEvent(QShowEvent *) override;
  void hideEvent(QHideEvent *) override;
 
  void updateFrame(int frame);  //!< Changes frame without emitting any signal
                                //! and notifying the frameHandle.
 
protected slots:
 
  /*!
\details  Copies the value in the frame's line edit widget to the internal
current frame value.
*/
  void onEditingFinished();  //!< Slot invoked whenever current frame's text
                             //! editing is finished.
  void onFrameSwitched();
};
 
#endif  // FRAMENVIGATORTOOLBAR_H