qgssinglesymbolrenderer.h

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/***************************************************************************
    qgssinglesymbolrenderer.h
    ---------------------
    begin                : November 2009
    copyright            : (C) 2009 by Martin Dobias
    email                : wonder dot sk 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 QGSSINGLESYMBOLRENDERER_H
#define QGSSINGLESYMBOLRENDERER_H

#include "qgis_core.h"
#include "qgis.h"
#include "qgsrenderer.h"
#include "qgssymbol.h"
#include "qgsexpression.h"
#include "qgsdatadefinedsizelegend.h"

class CORE_EXPORT QgsSingleSymbolRenderer : public QgsFeatureRenderer
{
  public:

    QgsSingleSymbolRenderer( QgsSymbol *symbol SIP_TRANSFER );

    QgsSymbol *symbolForFeature( const QgsFeature &feature, QgsRenderContext &context ) const override;
    QgsSymbol *originalSymbolForFeature( const QgsFeature &feature, QgsRenderContext &context ) const override;
    void startRender( QgsRenderContext &context, const QgsFields &fields ) override;
    void stopRender( QgsRenderContext &context ) override;
    QSet<QString> usedAttributes( const QgsRenderContext &context ) const override;
    bool accept( QgsStyleEntityVisitorInterface *visitor ) const override;

    QgsSymbol *symbol() const;

    void setSymbol( QgsSymbol *s SIP_TRANSFER );

    QString dump() const override;

    QgsSingleSymbolRenderer *clone() const override SIP_FACTORY;

    void toSld( QDomDocument &doc, QDomElement &element, const QgsStringMap &props = QgsStringMap() ) const override;

    static QgsFeatureRenderer *createFromSld( QDomElement &element, QgsWkbTypes::GeometryType geomType ) SIP_FACTORY;

    QgsFeatureRenderer::Capabilities capabilities() override { return SymbolLevels; }
    QgsSymbolList symbols( QgsRenderContext &context ) const override;

    static QgsFeatureRenderer *create( QDomElement &element, const QgsReadWriteContext &context ) SIP_FACTORY;

    QDomElement save( QDomDocument &doc, const QgsReadWriteContext &context ) override;
    QgsLegendSymbolList legendSymbolItems() const override;
    QSet< QString > legendKeysForFeature( const QgsFeature &feature, QgsRenderContext &context ) const override;
    void setLegendSymbolItem( const QString &key, QgsSymbol *symbol SIP_TRANSFER ) override;

    static QgsSingleSymbolRenderer *convertFromRenderer( const QgsFeatureRenderer *renderer ) SIP_FACTORY;

    void setDataDefinedSizeLegend( QgsDataDefinedSizeLegend *settings SIP_TRANSFER );

    QgsDataDefinedSizeLegend *dataDefinedSizeLegend() const;

  protected:
    std::unique_ptr<QgsSymbol> mSymbol;
    std::unique_ptr<QgsDataDefinedSizeLegend> mDataDefinedSizeLegend;

  private:
#ifdef SIP_RUN
    QgsSingleSymbolRenderer( const QgsSingleSymbolRenderer & );
    QgsSingleSymbolRenderer &operator=( const QgsSingleSymbolRenderer & );
#endif

};


#endif // QGSSINGLESYMBOLRENDERER_H