StatusBar.h

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/******************************************************************************************************
 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released      *
 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission.     *
 ******************************************************************************************************/
 
#ifndef STATUS_BAR_H
#define STATUS_BAR_H
 
#include <QComboBox>
#include <QMap>
#include <QObject>
#include <QString>
#include "StatusBarMode.h"
#include "ZoomFactor.h"
 
class QFrame;
class QStatusBar;
class QTextEdit;
class QTimer;

class StatusBar : public QObject
{
  Q_OBJECT;
 
public:
  StatusBar(QStatusBar &statusBar);
  ~StatusBar();

  void setCoordinates (const QString &coordsScreen,
                       const QString &coordsGraph,
                       const QString &resolutionGraph);

  void setStatusBarMode (StatusBarMode statusBarMode);

  void showTemporaryMessage(const QString &message);

  StatusBarMode statusBarMode() const { return m_statusBarMode; }

  void wakeUp ();
 
public slots:
  void slotZoom(int);
 
private slots:
  void slotComboUnits (const QString &);

  void slotComboZoom (const QString &);

  void slotStatusBarChanged(const QString &message);

  void slotTimeout();
 
signals:
  void signalZoom (int);
 
private:
  StatusBar();
 
  void createGroupUnits ();
  void createZoom ();
  void createZoomLabels ();
  void createZoomMaps ();
  QString labelCoordsGraph () const; // Return string initialized after QTranslator has become available
  QString labelCoordsScreen () const; // Return string initialized after QTranslator has become available
  QString labelResolutionGraph () const; // Return string initialized after QTranslator has become available
  void updateCoordsText ();
 
  enum StatusBarUnits {
    STATUS_BAR_UNITS_COORDS_SCREEN,
    STATUS_BAR_UNITS_COORDS_GRAPH,
    STATUS_BAR_UNITS_RESOLUTION_GRAPH
  };
 
  QStatusBar &m_statusBar;
 
  QComboBox *m_cmbZoom;
 
  QFrame *m_groupUnits; 
  QComboBox *m_cmbUnits;
  QTextEdit *m_editCoords;
 
  QString m_coordsScreen; 
  QString m_coordsGraph; 
  QString m_resolutionGraph; 
 
  StatusBarMode m_statusBarMode;
 
  QTimer *m_timer;
 
  // Map to/from/between zoom enumerations. These eliminate the need for switch statements
  QMap<ZoomFactor, QString> m_zoomMapToLabel;
  QMap<QString, ZoomFactor> m_zoomMapFromLabel;
};
 
#endif // STATUS_BAR_H