qgsquickutils.h

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/***************************************************************************
  qgsquickutils.h
  --------------------------------------
  Date                 : Nov 2017
  Copyright            : (C) 2017 by Peter Petrik
  Email                : zilolv 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 QGSQUICKUTILS_H
#define QGSQUICKUTILS_H


#include <QObject>
#include <QString>

#include "qgis.h"
#include "qgsmessagelog.h"

#include "qgsquickmapsettings.h"
#include "qgis_quick.h"

class QgsCoordinateReferenceSystem;

class QUICK_EXPORT QgsQuickUtils: public QObject
{
    Q_OBJECT

    Q_PROPERTY( qreal dp READ screenDensity CONSTANT )

  public:
    QgsQuickUtils( QObject *parent = nullptr );
    ~QgsQuickUtils() = default;

    qreal screenDensity() const;

    Q_INVOKABLE double screenUnitsToMeters( QgsQuickMapSettings *mapSettings, int baseLengthPixels ) const;

    Q_INVOKABLE void logMessage( const QString &message,
                                 const QString &tag = QString( "QgsQuick" ),
                                 Qgis::MessageLevel level = Qgis::Warning );

    QString dumpScreenInfo() const;

  private:
    static qreal calculateScreenDensity();

    qreal mScreenDensity;
};

#endif // QGSQUICKUTILS_H