qgslayermetadata.h

Go to the documentation of this file.

/***************************************************************************
                             qgslayermetadata.h
                             -------------------
    begin                : April 2017
    copyright            : (C) 2017 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 QGSLAYERMETADATA_H
#define QGSLAYERMETADATA_H
 
#include "qgis_sip.h"
#include "qgis_core.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsbox3d.h"
#include "qgsrange.h"
#include "qgsabstractmetadatabase.h"
 
class QgsMapLayer;
 
class CORE_EXPORT QgsLayerMetadata : public QgsAbstractMetadataBase
{
  public:
 
    struct CORE_EXPORT SpatialExtent
    {
 
      QgsCoordinateReferenceSystem extentCrs;
 
      QgsBox3d bounds;
 
      // TODO c++20 - replace with = default
      bool operator==( const QgsLayerMetadata::SpatialExtent &other ) const;
    };
 
    struct CORE_EXPORT Extent
    {
      public:
 
        QList< QgsLayerMetadata::SpatialExtent > spatialExtents() const;
 
        void setSpatialExtents( const QList< QgsLayerMetadata::SpatialExtent > &extents );
 
        QList< QgsDateTimeRange > temporalExtents() const;
 
        void setTemporalExtents( const QList< QgsDateTimeRange > &extents );
 
        // TODO c++20 - replace with = default
        bool operator==( const QgsLayerMetadata::Extent &other ) const;
 
#ifndef SIP_RUN
      private:
 
        QList< QgsLayerMetadata::SpatialExtent > mSpatialExtents;
        QList< QgsDateTimeRange > mTemporalExtents;
 
#endif
 
    };
 
    struct CORE_EXPORT Constraint
    {
 
      Constraint( const QString &constraint = QString(), const QString &type = QString() )
        : type( type )
        , constraint( constraint )
      {}
 
      QString type;
 
      QString constraint;
 
      // TODO c++20 - replace with = default
      bool operator==( const QgsLayerMetadata::Constraint &other ) const;
 
    };
 
    typedef QList< QgsLayerMetadata::Constraint > ConstraintList;
 
    QgsLayerMetadata() = default;
 
    QgsLayerMetadata *clone() const override SIP_FACTORY;
 
    QString fees() const;
 
    void setFees( const QString &fees );
 
    QgsLayerMetadata::ConstraintList constraints() const;
 
    void addConstraint( const QgsLayerMetadata::Constraint &constraint );
 
    void setConstraints( const QgsLayerMetadata::ConstraintList &constraints );
 
    QStringList rights() const;
 
    void setRights( const QStringList &rights );
 
    QStringList licenses() const;
 
    void setLicenses( const QStringList &licenses );
 
    QString encoding() const;
 
    void setEncoding( const QString &encoding );
 
    SIP_SKIP const QgsLayerMetadata::Extent &extent() const;
 
    QgsLayerMetadata::Extent &extent();
 
    void setExtent( const QgsLayerMetadata::Extent &extent );
 
    QgsCoordinateReferenceSystem crs() const;
 
    void setCrs( const QgsCoordinateReferenceSystem &crs );
 
    void saveToLayer( QgsMapLayer *layer ) const;
 
    void readFromLayer( const QgsMapLayer *layer );
 
    bool readMetadataXml( const QDomElement &metadataElement ) override;
    bool writeMetadataXml( QDomElement &metadataElement, QDomDocument &document ) const override;
    void combine( const QgsAbstractMetadataBase *other ) override;
 
    bool operator==( const QgsLayerMetadata &metadataOther ) const;
 
  private:
 
    /*
     * IMPORTANT!!!!!!
     *
     * Do NOT add anything to this class without also updating the schema
     * definition located at resources/qgis-resource-metadata.xsd
     *
     */
 
    QString mFees;
    ConstraintList mConstraints;
    QStringList mRights;
    QStringList mLicenses;
 
    // IMPORTANT - look up before adding anything here!!
 
    QString mEncoding;
    QgsCoordinateReferenceSystem mCrs;
 
    Extent mExtent;
 
    /*
     * IMPORTANT!!!!!!
     *
     * Do NOT add anything to this class without also updating the schema
     * definition located at resources/qgis-resource-metadata.xsd
     *
     */
 
};
 
Q_DECLARE_METATYPE( QgsLayerMetadata::ConstraintList )
Q_DECLARE_METATYPE( QgsLayerMetadata::Extent )
 
#endif // QGSLAYERMETADATA_H