qgslayoutnortharrowhandler.h

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/***************************************************************************
                         qgslayoutnortharrowhandler.h
                         -------------------
begin                : April 2020
copyright            : (C) 2020 by Nyall Dawson
email                : nyall dot dawson at gmail dot com
***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
#ifndef QGSLAYOUTNORTHARROWHANDLER_H
#define QGSLAYOUTNORTHARROWHANDLER_H
 
#include "qgis_core.h"
#include "qgis_sip.h"
 
#include <QObject>
#include <QPointer>
 
class QgsLayoutItemMap;

class CORE_EXPORT QgsLayoutNorthArrowHandler : public QObject
{
    Q_OBJECT
  public:
    enum NorthMode
    {
      GridNorth = 0, 
      TrueNorth,     
    };

    QgsLayoutNorthArrowHandler( QObject *parent SIP_TRANSFERTHIS );

    double arrowRotation() const { return mArrowRotation; }

    void setLinkedMap( QgsLayoutItemMap *map );

    QgsLayoutItemMap *linkedMap() const;

    NorthMode northMode() const { return mNorthMode; }

    void setNorthMode( NorthMode mode );

    double northOffset() const { return mNorthOffset; }

    void setNorthOffset( double offset );
 
  signals:
    void arrowRotationChanged( double newRotation );
 
  private:
    double mArrowRotation = 0;
 
    QString mRotationMapUuid;
    QPointer< QgsLayoutItemMap > mRotationMap;

    NorthMode mNorthMode = GridNorth;
    double mNorthOffset = 0.0;
 
    void disconnectMap( QgsLayoutItemMap *map );
 
  private slots:
 
    void updateMapRotation();
};
 
#endif // QGSLAYOUTNORTHARROWHANDLER_H