qgsfillsymbollayer.h

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/***************************************************************************
 qgsfillsymbollayer.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 QGSFILLSYMBOLLAYER_H
#define QGSFILLSYMBOLLAYER_H

#include "qgis_core.h"
#include "qgis.h"
#include "qgssymbollayer.h"

#define DEFAULT_SIMPLEFILL_COLOR        QColor(0,0,255)
#define DEFAULT_SIMPLEFILL_STYLE        Qt::SolidPattern
#define DEFAULT_SIMPLEFILL_BORDERCOLOR  QColor( 35, 35, 35 )
#define DEFAULT_SIMPLEFILL_BORDERSTYLE  Qt::SolidLine
#define DEFAULT_SIMPLEFILL_BORDERWIDTH  DEFAULT_LINE_WIDTH
#define DEFAULT_SIMPLEFILL_JOINSTYLE    Qt::BevelJoin

#define INF 1E20

#include <QPen>
#include <QBrush>

class CORE_EXPORT QgsSimpleFillSymbolLayer : public QgsFillSymbolLayer
{
  public:
    QgsSimpleFillSymbolLayer( const QColor &color = DEFAULT_SIMPLEFILL_COLOR,
                              Qt::BrushStyle style = DEFAULT_SIMPLEFILL_STYLE,
                              const QColor &strokeColor = DEFAULT_SIMPLEFILL_BORDERCOLOR,
                              Qt::PenStyle strokeStyle = DEFAULT_SIMPLEFILL_BORDERSTYLE,
                              double strokeWidth = DEFAULT_SIMPLEFILL_BORDERWIDTH,
                              Qt::PenJoinStyle penJoinStyle = DEFAULT_SIMPLEFILL_JOINSTYLE
                            );

    // static stuff

    static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() ) SIP_FACTORY;
    static QgsSymbolLayer *createFromSld( QDomElement &element ) SIP_FACTORY;

    // implemented from base classes

    QString layerType() const override;

    void startRender( QgsSymbolRenderContext &context ) override;

    void stopRender( QgsSymbolRenderContext &context ) override;

    void renderPolygon( const QPolygonF &points, QList<QPolygonF> *rings, QgsSymbolRenderContext &context ) override;

    QgsStringMap properties() const override;

    QgsSimpleFillSymbolLayer *clone() const override SIP_FACTORY;

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

    QString ogrFeatureStyle( double mmScaleFactor, double mapUnitScaleFactor ) const override;

    Qt::BrushStyle brushStyle() const { return mBrushStyle; }
    void setBrushStyle( Qt::BrushStyle style ) { mBrushStyle = style; }

    QColor strokeColor() const override { return mStrokeColor; }
    void setStrokeColor( const QColor &strokeColor ) override { mStrokeColor = strokeColor; }

    QColor fillColor() const override { return color(); }
    void setFillColor( const QColor &color ) override { setColor( color ); }

    Qt::PenStyle strokeStyle() const { return mStrokeStyle; }
    void setStrokeStyle( Qt::PenStyle strokeStyle ) { mStrokeStyle = strokeStyle; }

    double strokeWidth() const { return mStrokeWidth; }
    void setStrokeWidth( double strokeWidth ) { mStrokeWidth = strokeWidth; }

    Qt::PenJoinStyle penJoinStyle() const { return mPenJoinStyle; }
    void setPenJoinStyle( Qt::PenJoinStyle style ) { mPenJoinStyle = style; }

    void setOffset( QPointF offset ) { mOffset = offset; }
    QPointF offset() { return mOffset; }

    void setStrokeWidthUnit( QgsUnitTypes::RenderUnit unit ) { mStrokeWidthUnit = unit; }

    QgsUnitTypes::RenderUnit strokeWidthUnit() const { return mStrokeWidthUnit; }

    void setStrokeWidthMapUnitScale( const QgsMapUnitScale &scale ) { mStrokeWidthMapUnitScale = scale; }
    const QgsMapUnitScale &strokeWidthMapUnitScale() const { return mStrokeWidthMapUnitScale; }

    void setOffsetUnit( QgsUnitTypes::RenderUnit unit ) { mOffsetUnit = unit; }

    QgsUnitTypes::RenderUnit offsetUnit() const { return mOffsetUnit; }

    void setOffsetMapUnitScale( const QgsMapUnitScale &scale ) { mOffsetMapUnitScale = scale; }
    const QgsMapUnitScale &offsetMapUnitScale() const { return mOffsetMapUnitScale; }

    void setOutputUnit( QgsUnitTypes::RenderUnit unit ) override;
    QgsUnitTypes::RenderUnit outputUnit() const override;

    void setMapUnitScale( const QgsMapUnitScale &scale ) override;
    QgsMapUnitScale mapUnitScale() const override;

    double estimateMaxBleed( const QgsRenderContext &context ) const override;

    double dxfWidth( const QgsDxfExport &e, QgsSymbolRenderContext &context ) const override;
    QColor dxfColor( QgsSymbolRenderContext &context ) const override;
    double dxfAngle( QgsSymbolRenderContext &context ) const override;

    Qt::PenStyle dxfPenStyle() const override;
    QColor dxfBrushColor( QgsSymbolRenderContext &context ) const override;
    Qt::BrushStyle dxfBrushStyle() const override;

  protected:
    QBrush mBrush;
    QBrush mSelBrush;
    Qt::BrushStyle mBrushStyle;
    QColor mStrokeColor;
    Qt::PenStyle mStrokeStyle;
    double mStrokeWidth;
    QgsUnitTypes::RenderUnit mStrokeWidthUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mStrokeWidthMapUnitScale;
    Qt::PenJoinStyle mPenJoinStyle;
    QPen mPen;
    QPen mSelPen;

    QPointF mOffset;
    QgsUnitTypes::RenderUnit mOffsetUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mOffsetMapUnitScale;

  private:
    //helper functions for data defined symbology
    void applyDataDefinedSymbology( QgsSymbolRenderContext &context, QBrush &brush, QPen &pen, QPen &selPen );
};

class QgsColorRamp;

class CORE_EXPORT QgsGradientFillSymbolLayer : public QgsFillSymbolLayer
{
  public:

    enum GradientColorType
    {
      SimpleTwoColor,
      ColorRamp
    };

    enum GradientType
    {
      Linear,
      Radial,
      Conical
    };

    enum GradientCoordinateMode
    {
      Feature,
      Viewport
    };

    enum GradientSpread
    {
      Pad,
      Reflect,
      Repeat
    };

    QgsGradientFillSymbolLayer( const QColor &color = DEFAULT_SIMPLEFILL_COLOR,
                                const QColor &color2 = Qt::white,
                                GradientColorType gradientColorType = SimpleTwoColor,
                                GradientType gradientType = Linear,
                                GradientCoordinateMode coordinateMode = Feature,
                                GradientSpread gradientSpread = Pad
                              );

    ~QgsGradientFillSymbolLayer() override;

    // static stuff

    static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() ) SIP_FACTORY;

    // implemented from base classes

    QString layerType() const override;

    void startRender( QgsSymbolRenderContext &context ) override;

    void stopRender( QgsSymbolRenderContext &context ) override;

    void renderPolygon( const QPolygonF &points, QList<QPolygonF> *rings, QgsSymbolRenderContext &context ) override;

    QgsStringMap properties() const override;

    QgsGradientFillSymbolLayer *clone() const override SIP_FACTORY;

    double estimateMaxBleed( const QgsRenderContext &context ) const override;

    GradientType gradientType() const { return mGradientType; }
    void setGradientType( GradientType gradientType ) { mGradientType = gradientType; }

    GradientColorType gradientColorType() const { return mGradientColorType; }
    void setGradientColorType( GradientColorType gradientColorType ) { mGradientColorType = gradientColorType; }

    QgsColorRamp *colorRamp() { return mGradientRamp; }

    void setColorRamp( QgsColorRamp *ramp );

    QColor color2() const { return mColor2; }
    void setColor2( const QColor &color2 ) { mColor2 = color2; }

    GradientCoordinateMode coordinateMode() const { return mCoordinateMode; }
    void setCoordinateMode( GradientCoordinateMode coordinateMode ) { mCoordinateMode = coordinateMode; }

    GradientSpread gradientSpread() const { return mGradientSpread; }
    void setGradientSpread( GradientSpread gradientSpread ) { mGradientSpread = gradientSpread; }

    void setReferencePoint1( QPointF referencePoint ) { mReferencePoint1 = referencePoint; }
    QPointF referencePoint1() const { return mReferencePoint1; }

    void setReferencePoint1IsCentroid( bool isCentroid ) { mReferencePoint1IsCentroid = isCentroid; }
    bool referencePoint1IsCentroid() const { return mReferencePoint1IsCentroid; }

    void setReferencePoint2( QPointF referencePoint ) { mReferencePoint2 = referencePoint; }
    QPointF referencePoint2() const { return mReferencePoint2; }

    void setReferencePoint2IsCentroid( bool isCentroid ) { mReferencePoint2IsCentroid = isCentroid; }
    bool referencePoint2IsCentroid() const { return mReferencePoint2IsCentroid; }

    void setOffset( QPointF offset ) { mOffset = offset; }
    QPointF offset() const { return mOffset; }

    void setOffsetUnit( QgsUnitTypes::RenderUnit unit ) { mOffsetUnit = unit; }
    QgsUnitTypes::RenderUnit offsetUnit() const { return mOffsetUnit; }

    void setOffsetMapUnitScale( const QgsMapUnitScale &scale ) { mOffsetMapUnitScale = scale; }
    const QgsMapUnitScale &offsetMapUnitScale() const { return mOffsetMapUnitScale; }

    void setOutputUnit( QgsUnitTypes::RenderUnit unit ) override;
    QgsUnitTypes::RenderUnit outputUnit() const override;

    void setMapUnitScale( const QgsMapUnitScale &scale ) override;
    QgsMapUnitScale mapUnitScale() const override;

  protected:
    QBrush mBrush;
    QBrush mSelBrush;

    GradientColorType mGradientColorType;
    QColor mColor2;
    QgsColorRamp *mGradientRamp = nullptr;
    GradientType mGradientType;
    GradientCoordinateMode mCoordinateMode;
    GradientSpread mGradientSpread;

    QPointF mReferencePoint1;
    bool mReferencePoint1IsCentroid = false;
    QPointF mReferencePoint2;
    bool mReferencePoint2IsCentroid = false;

    QPointF mOffset;
    QgsUnitTypes::RenderUnit mOffsetUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mOffsetMapUnitScale;

  private:

    //helper functions for data defined symbology
    void applyDataDefinedSymbology( QgsSymbolRenderContext &context, const QPolygonF &points );

    void applyGradient( const QgsSymbolRenderContext &context, QBrush &brush, const QColor &color, const QColor &color2,
                        GradientColorType gradientColorType, QgsColorRamp *gradientRamp, GradientType gradientType,
                        GradientCoordinateMode coordinateMode, GradientSpread gradientSpread,
                        QPointF referencePoint1, QPointF referencePoint2, double angle );

    QPointF rotateReferencePoint( QPointF refPoint, double angle );
};

class CORE_EXPORT QgsShapeburstFillSymbolLayer : public QgsFillSymbolLayer
{
  public:

    enum ShapeburstColorType
    {
      SimpleTwoColor,
      ColorRamp
    };

    QgsShapeburstFillSymbolLayer( const QColor &color = DEFAULT_SIMPLEFILL_COLOR, const QColor &color2 = Qt::white,
                                  ShapeburstColorType colorType = SimpleTwoColor,
                                  int blurRadius = 0, bool useWholeShape = true, double maxDistance = 5 );

    ~QgsShapeburstFillSymbolLayer() override;

    QgsShapeburstFillSymbolLayer( const QgsShapeburstFillSymbolLayer &other ) = delete;

    QgsShapeburstFillSymbolLayer &operator=( const QgsShapeburstFillSymbolLayer &other ) = delete;

    // static stuff

    static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() ) SIP_FACTORY;

    // implemented from base classes

    QString layerType() const override;

    void startRender( QgsSymbolRenderContext &context ) override;

    void stopRender( QgsSymbolRenderContext &context ) override;

    void renderPolygon( const QPolygonF &points, QList<QPolygonF> *rings, QgsSymbolRenderContext &context ) override;

    QgsStringMap properties() const override;

    QgsShapeburstFillSymbolLayer *clone() const override SIP_FACTORY;

    double estimateMaxBleed( const QgsRenderContext &context ) const override;

    void setBlurRadius( int blurRadius ) { mBlurRadius = blurRadius; }

    int blurRadius() const { return mBlurRadius; }

    void setUseWholeShape( bool useWholeShape ) { mUseWholeShape = useWholeShape; }

    bool useWholeShape() const { return mUseWholeShape; }

    void setMaxDistance( double maxDistance ) { mMaxDistance = maxDistance; }

    double maxDistance() const { return mMaxDistance; }

    void setDistanceUnit( QgsUnitTypes::RenderUnit unit ) { mDistanceUnit = unit; }

    QgsUnitTypes::RenderUnit distanceUnit() const { return mDistanceUnit; }

    void setDistanceMapUnitScale( const QgsMapUnitScale &scale ) { mDistanceMapUnitScale = scale; }
    const QgsMapUnitScale &distanceMapUnitScale() const { return mDistanceMapUnitScale; }

    void setColorType( ShapeburstColorType colorType ) { mColorType = colorType; }

    ShapeburstColorType colorType() const { return mColorType; }

    void setColorRamp( QgsColorRamp *ramp );

    QgsColorRamp *colorRamp() { return mGradientRamp.get(); }

    void setColor2( const QColor &color2 ) { mColor2 = color2; }

    QColor color2() const { return mColor2; }

    void setIgnoreRings( bool ignoreRings ) { mIgnoreRings = ignoreRings; }

    bool ignoreRings() const { return mIgnoreRings; }

    void setOffset( QPointF offset ) { mOffset = offset; }

    QPointF offset() const { return mOffset; }

    void setOffsetUnit( QgsUnitTypes::RenderUnit unit ) { mOffsetUnit = unit; }

    QgsUnitTypes::RenderUnit offsetUnit() const { return mOffsetUnit; }

    void setOffsetMapUnitScale( const QgsMapUnitScale &scale ) { mOffsetMapUnitScale = scale; }
    const QgsMapUnitScale &offsetMapUnitScale() const { return mOffsetMapUnitScale; }

    void setOutputUnit( QgsUnitTypes::RenderUnit unit ) override;
    QgsUnitTypes::RenderUnit outputUnit() const override;

    void setMapUnitScale( const QgsMapUnitScale &scale ) override;
    QgsMapUnitScale mapUnitScale() const override;

  private:
    QBrush mBrush;
    QBrush mSelBrush;

    int mBlurRadius = 0;

    bool mUseWholeShape = true;
    double mMaxDistance = 5.0;
    QgsUnitTypes::RenderUnit mDistanceUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mDistanceMapUnitScale;

    ShapeburstColorType mColorType = SimpleTwoColor;
    QColor mColor2;

    bool mIgnoreRings = false;

    QPointF mOffset;
    QgsUnitTypes::RenderUnit mOffsetUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mOffsetMapUnitScale;

    std::unique_ptr< QgsColorRamp > mGradientRamp;

    //helper functions for data defined symbology
    void applyDataDefinedSymbology( QgsSymbolRenderContext &context, QColor &color, QColor &color2, int &blurRadius, bool &useWholeShape,
                                    double &maxDistance, bool &ignoreRings );

    /* distance transform of a 1d function using squared distance */
    void distanceTransform1d( double *f, int n, int *v, double *z, double *d );
    /* distance transform of 2d function using squared distance */
    void distanceTransform2d( double *im, int width, int height );
    /* distance transform of a binary QImage */
    double *distanceTransform( QImage *im );

    /* fills a QImage with values from an array of doubles containing squared distance transform values */
    void dtArrayToQImage( double *array, QImage *im, QgsColorRamp *ramp, double layerAlpha = 1, bool useWholeShape = true, int maxPixelDistance = 0 );

#ifdef SIP_RUN
    QgsShapeburstFillSymbolLayer( const QgsShapeburstFillSymbolLayer &other );
#endif
};

class CORE_EXPORT QgsImageFillSymbolLayer: public QgsFillSymbolLayer
{
  public:

    QgsImageFillSymbolLayer();
    void renderPolygon( const QPolygonF &points, QList<QPolygonF> *rings, QgsSymbolRenderContext &context ) override;

    QgsSymbol *subSymbol() override { return mStroke.get(); }
    bool setSubSymbol( QgsSymbol *symbol SIP_TRANSFER ) override;

    void setStrokeWidthUnit( QgsUnitTypes::RenderUnit unit ) { mStrokeWidthUnit = unit; }

    QgsUnitTypes::RenderUnit strokeWidthUnit() const { return mStrokeWidthUnit; }

    void setStrokeWidthMapUnitScale( const QgsMapUnitScale &scale ) { mStrokeWidthMapUnitScale = scale; }

    const QgsMapUnitScale &strokeWidthMapUnitScale() const { return mStrokeWidthMapUnitScale; }

    void setOutputUnit( QgsUnitTypes::RenderUnit unit ) override;
    QgsUnitTypes::RenderUnit outputUnit() const override;
    void setMapUnitScale( const QgsMapUnitScale &scale ) override;
    QgsMapUnitScale mapUnitScale() const override;
    double estimateMaxBleed( const QgsRenderContext &context ) const override;
    double dxfWidth( const QgsDxfExport &e, QgsSymbolRenderContext &context ) const override;
    QColor dxfColor( QgsSymbolRenderContext &context ) const override;
    Qt::PenStyle dxfPenStyle() const override;
    QSet<QString> usedAttributes( const QgsRenderContext &context ) const override;
    bool hasDataDefinedProperties() const override;

  protected:
    QBrush mBrush;
    double mNextAngle = 0.0; // mAngle / data defined angle

    double mStrokeWidth = 0.0;
    QgsUnitTypes::RenderUnit mStrokeWidthUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mStrokeWidthMapUnitScale;

    std::unique_ptr< QgsLineSymbol > mStroke;

    virtual void applyDataDefinedSettings( QgsSymbolRenderContext &context ) { Q_UNUSED( context ); }

  private:
#ifdef SIP_RUN
    QgsImageFillSymbolLayer( const QgsImageFillSymbolLayer &other );
#endif
};

class CORE_EXPORT QgsRasterFillSymbolLayer: public QgsImageFillSymbolLayer
{
  public:

    enum FillCoordinateMode
    {
      Feature, 
      Viewport, 
    };

    QgsRasterFillSymbolLayer( const QString &imageFilePath = QString() );

    static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() ) SIP_FACTORY;

    static void resolvePaths( QgsStringMap &properties, const QgsPathResolver &pathResolver, bool saving );

    // implemented from base classes
    QString layerType() const override;
    void renderPolygon( const QPolygonF &points, QList<QPolygonF> *rings, QgsSymbolRenderContext &context ) override;
    void startRender( QgsSymbolRenderContext &context ) override;
    void stopRender( QgsSymbolRenderContext &context ) override;
    QgsStringMap properties() const override;
    QgsRasterFillSymbolLayer *clone() const override SIP_FACTORY;
    double estimateMaxBleed( const QgsRenderContext &context ) const override;

    //override QgsImageFillSymbolLayer's support for sub symbols
    QgsSymbol *subSymbol() override { return nullptr; }
    bool setSubSymbol( QgsSymbol *symbol SIP_TRANSFER ) override;

    void setImageFilePath( const QString &imagePath );

    QString imageFilePath() const { return mImageFilePath; }

    void setCoordinateMode( FillCoordinateMode mode );

    FillCoordinateMode coordinateMode() const { return mCoordinateMode; }

    void setOpacity( double opacity );

    double opacity() const { return mOpacity; }

    void setOffset( QPointF offset ) { mOffset = offset; }

    QPointF offset() const { return mOffset; }

    void setOffsetUnit( const QgsUnitTypes::RenderUnit unit ) { mOffsetUnit = unit; }

    QgsUnitTypes::RenderUnit offsetUnit() const { return mOffsetUnit; }

    void setOffsetMapUnitScale( const QgsMapUnitScale &scale ) { mOffsetMapUnitScale = scale; }

    const QgsMapUnitScale &offsetMapUnitScale() const { return mOffsetMapUnitScale; }

    void setWidth( const double width ) { mWidth = width; }

    double width() const { return mWidth; }

    void setWidthUnit( const QgsUnitTypes::RenderUnit unit ) { mWidthUnit = unit; }

    QgsUnitTypes::RenderUnit widthUnit() const { return mWidthUnit; }

    void setWidthMapUnitScale( const QgsMapUnitScale &scale ) { mWidthMapUnitScale = scale; }

    const QgsMapUnitScale &widthMapUnitScale() const { return mWidthMapUnitScale; }

  protected:

    void applyDataDefinedSettings( QgsSymbolRenderContext &context ) override;

  private:

    QString mImageFilePath;
    FillCoordinateMode mCoordinateMode = QgsRasterFillSymbolLayer::Feature;
    double mOpacity = 1.0;

    QPointF mOffset;
    QgsUnitTypes::RenderUnit mOffsetUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mOffsetMapUnitScale;

    double mWidth = 0.0;
    QgsUnitTypes::RenderUnit mWidthUnit = QgsUnitTypes::RenderPixels;
    QgsMapUnitScale mWidthMapUnitScale;

    void applyPattern( QBrush &brush, const QString &imageFilePath, double width, double opacity,
                       const QgsSymbolRenderContext &context );
};

class CORE_EXPORT QgsSVGFillSymbolLayer: public QgsImageFillSymbolLayer
{
  public:

    QgsSVGFillSymbolLayer( const QString &svgFilePath, double width = 20, double rotation = 0.0 );

    QgsSVGFillSymbolLayer( const QByteArray &svgData, double width = 20, double rotation = 0.0 );

    static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() ) SIP_FACTORY;

    static QgsSymbolLayer *createFromSld( QDomElement &element ) SIP_FACTORY;

    static void resolvePaths( QgsStringMap &properties, const QgsPathResolver &pathResolver, bool saving );

    // implemented from base classes

    QString layerType() const override;
    void startRender( QgsSymbolRenderContext &context ) override;
    void stopRender( QgsSymbolRenderContext &context ) override;
    QgsStringMap properties() const override;
    QgsSVGFillSymbolLayer *clone() const override SIP_FACTORY;
    void toSld( QDomDocument &doc, QDomElement &element, const QgsStringMap &props ) const override;

    void setSvgFilePath( const QString &svgPath );

    QString svgFilePath() const { return mSvgFilePath; }

    void setPatternWidth( double width ) { mPatternWidth = width;}

    double patternWidth() const { return mPatternWidth; }

    void setSvgFillColor( const QColor &c ) { setColor( c );  }

    QColor svgFillColor() const { return color(); }

    void setSvgStrokeColor( const QColor &c ) { mSvgStrokeColor = c; }

    QColor svgStrokeColor() const { return mSvgStrokeColor; }

    void setSvgStrokeWidth( double w ) { mSvgStrokeWidth = w; }

    double svgStrokeWidth() const { return mSvgStrokeWidth; }

    void setPatternWidthUnit( QgsUnitTypes::RenderUnit unit ) { mPatternWidthUnit = unit; }

    QgsUnitTypes::RenderUnit patternWidthUnit() const { return mPatternWidthUnit; }

    void setPatternWidthMapUnitScale( const QgsMapUnitScale &scale ) { mPatternWidthMapUnitScale = scale; }

    const QgsMapUnitScale &patternWidthMapUnitScale() const { return mPatternWidthMapUnitScale; }

    void setSvgStrokeWidthUnit( QgsUnitTypes::RenderUnit unit ) { mSvgStrokeWidthUnit = unit; }

    QgsUnitTypes::RenderUnit svgStrokeWidthUnit() const { return mSvgStrokeWidthUnit; }

    void setSvgStrokeWidthMapUnitScale( const QgsMapUnitScale &scale ) { mSvgStrokeWidthMapUnitScale = scale; }

    const QgsMapUnitScale &svgStrokeWidthMapUnitScale() const { return mSvgStrokeWidthMapUnitScale; }

    void setOutputUnit( QgsUnitTypes::RenderUnit unit ) override;
    QgsUnitTypes::RenderUnit outputUnit() const override;

    void setMapUnitScale( const QgsMapUnitScale &scale ) override;
    QgsMapUnitScale mapUnitScale() const override;

  protected:

    void applyDataDefinedSettings( QgsSymbolRenderContext &context ) override;

  private:

    double mPatternWidth = 20;
    QgsUnitTypes::RenderUnit mPatternWidthUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mPatternWidthMapUnitScale;

    QByteArray mSvgData;
    QString mSvgFilePath;
    QRectF mSvgViewBox;

    //param(fill), param(stroke), param(stroke-width) are going
    //to be replaced in memory
    QColor mSvgStrokeColor = QColor( 35, 35, 35 );
    double mSvgStrokeWidth = 0.2;
    QgsUnitTypes::RenderUnit mSvgStrokeWidthUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mSvgStrokeWidthMapUnitScale;

    void storeViewBox();
    void setDefaultSvgParams(); //fills mSvgFillColor, mSvgStrokeColor, mSvgStrokeWidth with default values for mSvgFilePath

    void applyPattern( QBrush &brush, const QString &svgFilePath, double patternWidth, QgsUnitTypes::RenderUnit patternWidthUnit, const QColor &svgFillColor, const QColor &svgStrokeColor,
                       double svgStrokeWidth, QgsUnitTypes::RenderUnit svgStrokeWidthUnit, const QgsSymbolRenderContext &context, const QgsMapUnitScale &patternWidthMapUnitScale, const QgsMapUnitScale &svgStrokeWidthMapUnitScale );
};

class CORE_EXPORT QgsLinePatternFillSymbolLayer: public QgsImageFillSymbolLayer
{
  public:
    QgsLinePatternFillSymbolLayer();
    ~QgsLinePatternFillSymbolLayer() override;

    static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() ) SIP_FACTORY;

    static QgsSymbolLayer *createFromSld( QDomElement &element ) SIP_FACTORY;

    QString layerType() const override;
    void startRender( QgsSymbolRenderContext &context ) override;
    void stopRender( QgsSymbolRenderContext &context ) override;
    QgsStringMap properties() const override;
    QgsLinePatternFillSymbolLayer *clone() const override SIP_FACTORY;
    void toSld( QDomDocument &doc, QDomElement &element, const QgsStringMap &props ) const override;
    double estimateMaxBleed( const QgsRenderContext &context ) const override;

    QString ogrFeatureStyleWidth( double widthScaleFactor ) const;

    void setLineAngle( double a ) { mLineAngle = a; }

    double lineAngle() const { return mLineAngle; }

    void setDistance( double d ) { mDistance = d; }

    double distance() const { return mDistance; }

    void setLineWidth( double w );

    double lineWidth() const { return mLineWidth; }

    void setColor( const QColor &c ) override;
    QColor color() const override;

    void setOffset( double offset ) { mOffset = offset; }

    double offset() const { return mOffset; }

    void setDistanceUnit( QgsUnitTypes::RenderUnit unit ) { mDistanceUnit = unit; }

    QgsUnitTypes::RenderUnit distanceUnit() const { return mDistanceUnit; }

    void setDistanceMapUnitScale( const QgsMapUnitScale &scale ) { mDistanceMapUnitScale = scale; }

    const QgsMapUnitScale &distanceMapUnitScale() const { return mDistanceMapUnitScale; }

    void setLineWidthUnit( QgsUnitTypes::RenderUnit unit ) { mLineWidthUnit = unit; }

    QgsUnitTypes::RenderUnit lineWidthUnit() const { return mLineWidthUnit; }

    void setLineWidthMapUnitScale( const QgsMapUnitScale &scale ) { mLineWidthMapUnitScale = scale; }

    const QgsMapUnitScale &lineWidthMapUnitScale() const { return mLineWidthMapUnitScale; }

    void setOffsetUnit( QgsUnitTypes::RenderUnit unit ) { mOffsetUnit = unit; }

    QgsUnitTypes::RenderUnit offsetUnit() const { return mOffsetUnit; }

    void setOffsetMapUnitScale( const QgsMapUnitScale &scale ) { mOffsetMapUnitScale = scale; }

    const QgsMapUnitScale &offsetMapUnitScale() const { return mOffsetMapUnitScale; }

    void setOutputUnit( QgsUnitTypes::RenderUnit unit ) override;
    QgsUnitTypes::RenderUnit outputUnit() const override;
    void setMapUnitScale( const QgsMapUnitScale &scale ) override;
    QgsMapUnitScale mapUnitScale() const override;
    bool setSubSymbol( QgsSymbol *symbol SIP_TRANSFER ) override;
    QgsSymbol *subSymbol() override;
    QSet<QString> usedAttributes( const QgsRenderContext &context ) const override;
    bool hasDataDefinedProperties() const override;

  protected:

    void applyDataDefinedSettings( QgsSymbolRenderContext &context ) override;

  private:
    double mDistance = 5.0;
    QgsUnitTypes::RenderUnit mDistanceUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mDistanceMapUnitScale;
    double mLineWidth = 0;
    QgsUnitTypes::RenderUnit mLineWidthUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mLineWidthMapUnitScale;
    double mLineAngle = 45.0;
    double mOffset = 0.0;
    QgsUnitTypes::RenderUnit mOffsetUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mOffsetMapUnitScale;

#ifdef SIP_RUN
    QgsLinePatternFillSymbolLayer( const QgsLinePatternFillSymbolLayer &other );
#endif

    void applyPattern( const QgsSymbolRenderContext &context, QBrush &brush, double lineAngle, double distance );

    QgsLineSymbol *mFillLineSymbol = nullptr;
};

class CORE_EXPORT QgsPointPatternFillSymbolLayer: public QgsImageFillSymbolLayer
{
  public:
    QgsPointPatternFillSymbolLayer();
    ~QgsPointPatternFillSymbolLayer() override;

    static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() ) SIP_FACTORY;
    static QgsSymbolLayer *createFromSld( QDomElement &element ) SIP_FACTORY;

    QString layerType() const override;

    void startRender( QgsSymbolRenderContext &context ) override;

    void stopRender( QgsSymbolRenderContext &context ) override;

    QgsStringMap properties() const override;

    QgsPointPatternFillSymbolLayer *clone() const override SIP_FACTORY;

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

    double estimateMaxBleed( const QgsRenderContext &context ) const override;

    //getters and setters
    double distanceX() const { return mDistanceX; }
    void setDistanceX( double d ) { mDistanceX = d; }

    double distanceY() const { return mDistanceY; }
    void setDistanceY( double d ) { mDistanceY = d; }

    double displacementX() const { return mDisplacementX; }
    void setDisplacementX( double d ) { mDisplacementX = d; }

    double displacementY() const { return mDisplacementY; }
    void setDisplacementY( double d ) { mDisplacementY = d; }

    bool setSubSymbol( QgsSymbol *symbol SIP_TRANSFER ) override;
    QgsSymbol *subSymbol() override { return mMarkerSymbol; }

    void setDistanceXUnit( QgsUnitTypes::RenderUnit unit ) { mDistanceXUnit = unit; }

    QgsUnitTypes::RenderUnit distanceXUnit() const { return mDistanceXUnit; }

    void setDistanceXMapUnitScale( const QgsMapUnitScale &scale ) { mDistanceXMapUnitScale = scale; }
    const QgsMapUnitScale &distanceXMapUnitScale() const { return mDistanceXMapUnitScale; }

    void setDistanceYUnit( QgsUnitTypes::RenderUnit unit ) { mDistanceYUnit = unit; }

    QgsUnitTypes::RenderUnit distanceYUnit() const { return mDistanceYUnit; }

    void setDistanceYMapUnitScale( const QgsMapUnitScale &scale ) { mDistanceYMapUnitScale = scale; }
    const QgsMapUnitScale &distanceYMapUnitScale() const { return mDistanceYMapUnitScale; }

    void setDisplacementXUnit( QgsUnitTypes::RenderUnit unit ) { mDisplacementXUnit = unit; }

    QgsUnitTypes::RenderUnit displacementXUnit() const { return mDisplacementXUnit; }

    void setDisplacementXMapUnitScale( const QgsMapUnitScale &scale ) { mDisplacementXMapUnitScale = scale; }
    const QgsMapUnitScale &displacementXMapUnitScale() const { return mDisplacementXMapUnitScale; }

    void setDisplacementYUnit( QgsUnitTypes::RenderUnit unit ) { mDisplacementYUnit = unit; }

    QgsUnitTypes::RenderUnit displacementYUnit() const { return mDisplacementYUnit; }

    void setDisplacementYMapUnitScale( const QgsMapUnitScale &scale ) { mDisplacementYMapUnitScale = scale; }
    const QgsMapUnitScale &displacementYMapUnitScale() const { return mDisplacementYMapUnitScale; }

    void setOutputUnit( QgsUnitTypes::RenderUnit unit ) override;
    QgsUnitTypes::RenderUnit outputUnit() const override;

    void setMapUnitScale( const QgsMapUnitScale &scale ) override;
    QgsMapUnitScale mapUnitScale() const override;

    QSet<QString> usedAttributes( const QgsRenderContext &context ) const override;
    bool hasDataDefinedProperties() const override;
    void setColor( const QColor &c ) override;
    QColor color() const override;

  protected:
    QgsMarkerSymbol *mMarkerSymbol = nullptr;
    double mDistanceX = 15;
    QgsUnitTypes::RenderUnit mDistanceXUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mDistanceXMapUnitScale;
    double mDistanceY = 15;
    QgsUnitTypes::RenderUnit mDistanceYUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mDistanceYMapUnitScale;
    double mDisplacementX = 0;
    QgsUnitTypes::RenderUnit mDisplacementXUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mDisplacementXMapUnitScale;
    double mDisplacementY = 0;
    QgsUnitTypes::RenderUnit mDisplacementYUnit = QgsUnitTypes::RenderMillimeters;
    QgsMapUnitScale mDisplacementYMapUnitScale;

    void applyDataDefinedSettings( QgsSymbolRenderContext &context ) override;

  private:
#ifdef SIP_RUN
    QgsPointPatternFillSymbolLayer( const QgsPointPatternFillSymbolLayer &other );
#endif

    void applyPattern( const QgsSymbolRenderContext &context, QBrush &brush, double distanceX, double distanceY,
                       double displacementX, double displacementY );
};

class CORE_EXPORT QgsCentroidFillSymbolLayer : public QgsFillSymbolLayer
{
  public:
    QgsCentroidFillSymbolLayer();

    // static stuff

    static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() ) SIP_FACTORY;
    static QgsSymbolLayer *createFromSld( QDomElement &element ) SIP_FACTORY;

    // implemented from base classes

    QString layerType() const override;

    void startRender( QgsSymbolRenderContext &context ) override;

    void stopRender( QgsSymbolRenderContext &context ) override;

    void renderPolygon( const QPolygonF &points, QList<QPolygonF> *rings, QgsSymbolRenderContext &context ) override;

    QgsStringMap properties() const override;

    QgsCentroidFillSymbolLayer *clone() const override SIP_FACTORY;

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

    void setColor( const QColor &color ) override;
    QColor color() const override;

    QgsSymbol *subSymbol() override;
    bool setSubSymbol( QgsSymbol *symbol SIP_TRANSFER ) override;

    void setOutputUnit( QgsUnitTypes::RenderUnit unit ) override;
    QgsUnitTypes::RenderUnit outputUnit() const override;

    void setMapUnitScale( const QgsMapUnitScale &scale ) override;
    QgsMapUnitScale mapUnitScale() const override;

    QSet<QString> usedAttributes( const QgsRenderContext &context ) const override;
    bool hasDataDefinedProperties() const override;

    void setPointOnSurface( bool pointOnSurface ) { mPointOnSurface = pointOnSurface; }
    bool pointOnSurface() const { return mPointOnSurface; }

    void setPointOnAllParts( bool pointOnAllParts ) { mPointOnAllParts = pointOnAllParts; }

    bool pointOnAllParts() const { return mPointOnAllParts; }

  protected:
    std::unique_ptr< QgsMarkerSymbol > mMarker;
    bool mPointOnSurface = false;
    bool mPointOnAllParts = true;

    QgsFeatureId mCurrentFeatureId = -1;
    int mBiggestPartIndex = -1;

  private:
#ifdef SIP_RUN
    QgsCentroidFillSymbolLayer( const QgsCentroidFillSymbolLayer &other );
#endif
};

#endif