qgsquickmaptoscreen.h

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/***************************************************************************
  qgsquickmaptoscreen.h
  ----------------------------------------------------
  Date                 : 22.08.2018
  Copyright            : (C) 2018 by Denis Rouzaud
  Email                : denis (at) opengis.ch
 ***************************************************************************
 *                                                                         *
 *   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 QGSQUICKMAPTOSCREEN_H
#define QGSQUICKMAPTOSCREEN_H
 
#include "qgsquickmapsettings.h"
 
#include <QObject>
#include <QPointF>
#include <qgspoint.h>
 
class QUICK_EXPORT QgsQuickMapToScreen : public QObject
{
    Q_OBJECT
 
    Q_PROPERTY( QgsQuickMapSettings *mapSettings READ mapSettings WRITE setMapSettings NOTIFY mapSettingsChanged )
 
    
    Q_PROPERTY( QgsPoint mapPoint READ mapPoint WRITE setMapPoint NOTIFY mapPointChanged )
    Q_PROPERTY( QPointF screenPoint READ screenPoint NOTIFY screenPointChanged )
 
    Q_PROPERTY( double mapDistance READ mapDistance WRITE setMapDistance NOTIFY mapDistanceChanged )
    Q_PROPERTY( double screenDistance READ screenDistance NOTIFY screenDistanceChanged )
 
  public:
    explicit QgsQuickMapToScreen( QObject *parent = nullptr );
 
    void setMapSettings( QgsQuickMapSettings *mapSettings );
    QgsQuickMapSettings *mapSettings() const;
 
    void setMapPoint( const QgsPoint &point );
    QgsPoint mapPoint() const;
 
    void setMapDistance( const double distance );
    double mapDistance() const;
 
    QPointF screenPoint() const;
 
    double screenDistance() const;
 
  signals:
 
    void mapSettingsChanged();
    void mapPointChanged();
    void mapDistanceChanged();
    void screenPointChanged();
    void screenDistanceChanged();
 
  private slots:
    void transformPoint();
    void transformDistance();
 
  private:
    QgsQuickMapSettings *mMapSettings = nullptr;
    QgsPoint mMapPoint = QgsPoint();
    double mMapDistance = 0.0;
    QPointF mScreenPoint = QPointF();
    double mScreenDistance = 0.0;
};
 
#endif // QGSQUICKMAPTOSCREEN_H