qgsvectortilelayerrenderer.h

Go to the documentation of this file.

/***************************************************************************
  qgsvectortilelayerrenderer.h
  --------------------------------------
  Date                 : March 2020
  Copyright            : (C) 2020 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 QGSVECTORTILELAYERRENDERER_H
#define QGSVECTORTILELAYERRENDERER_H
 
 
#include "qgsmapclippingregion.h"
#include "qgsmaplayerrenderer.h"
#include "qgsvectortilematrixset.h"
#include "qgsvectortilerenderer.h"
 
#define SIP_NO_FILE
 
class QgsVectorTileLayer;
class QgsVectorTileRawData;
class QgsVectorTileLabelProvider;
class QgsVectorTileDataProvider;
 

class QgsVectorTileLayerRenderer : public QgsMapLayerRenderer
{
  public:
    QgsVectorTileLayerRenderer( QgsVectorTileLayer *layer, QgsRenderContext &context );
    ~QgsVectorTileLayerRenderer() override;
 
    bool render() override;
    QgsFeedback *feedback() const override { return mFeedback.get(); }
    bool forceRasterRender() const override;
 
  private:
    void decodeAndDrawTile( const QgsVectorTileRawData &rawTile );
 
    // data coming from the vector tile layer
 
    QString mLayerName;
 
    std::unique_ptr< QgsVectorTileDataProvider > mDataProvider;

    std::unique_ptr<QgsVectorTileRenderer> mRenderer;
 
    QPainter::CompositionMode mLayerBlendMode = QPainter::CompositionMode::CompositionMode_SourceOver;

    QgsVectorTileLabelProvider *mLabelProvider = nullptr;
 
    // Decoded tile data
    QMap<QString, QgsVectorTileRendererData> mTileDataMap;

    bool mDrawTileBoundaries = false;

    bool mLabelsEnabled = true;
 
    // temporary data used during rendering process

    std::unique_ptr<QgsFeedback> mFeedback;
    int mTileZoomToFetch = 0;
    int mTileZoomToRender = 0;

    QgsTileMatrix mTileMatrix;
    QgsTileRange mTileRange;
    QMap<QString, QgsFields> mPerLayerFields;

    QSet< QString > mRequiredLayers;

    QList< QgsFeature > mSelectedFeatures;

    int mTotalDecodeTime = 0;
    int mTotalDrawTime = 0;
 
    QList< QgsMapClippingRegion > mClippingRegions;
    double mLayerOpacity = 1.0;
 
    QgsVectorTileMatrixSet mTileMatrixSet;
 
    bool mEnableProfile = false;
    quint64 mPreparationTime = 0;
};
 
 
#endif // QGSVECTORTILELAYERRENDERER_H