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8ffd91ea90
This is necessary in order to be able to correctly translate between absolute and relative paths deeper in the code - e.g. paths to SVG files used in marker or fill symbols. Until now, relative paths were translated to absolute paths on the fly. This is now changed - paths to files should be always absolute within QGIS objects - and paths only get turned into relative when saving projects. When loading a project, relative paths are translated to absolute paths immediately. This should lower the overall confusion about relative/absolute paths within QGIS, and also allow having different base directories for relative paths (e.g. QML or QPT files may use relative paths to their directory - rather than to the project directory)
47 lines
1.8 KiB
Plaintext
47 lines
1.8 KiB
Plaintext
/** \class QgsPointClusterRenderer
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* \ingroup core
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* A renderer that automatically clusters points with the same geographic position.
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* \note added in QGIS 3.0
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*/
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class QgsPointClusterRenderer : QgsPointDistanceRenderer
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{
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%TypeHeaderCode
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#include <qgspointclusterrenderer.h>
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%End
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public:
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QgsPointClusterRenderer();
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virtual QgsPointClusterRenderer* clone() const /Factory/;
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virtual void startRender( QgsRenderContext& context, const QgsFields& fields );
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void stopRender( QgsRenderContext& context );
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QDomElement save( QDomDocument& doc, const QgsPathResolver &pathResolver );
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virtual QSet<QString> usedAttributes( const QgsRenderContext& context ) const;
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//! Create a renderer from XML element
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static QgsFeatureRenderer* create( QDomElement& symbologyElem, const QgsPathResolver &pathResolver ) /Factory/;
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/** Returns the symbol used for rendering clustered groups (but not ownership of the symbol).
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* @see setClusterSymbol()
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*/
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QgsMarkerSymbol *clusterSymbol();
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/** Sets the symbol for rendering clustered groups.
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* @param symbol new cluster symbol. Ownership is transferred to the renderer.
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* @see clusterSymbol()
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*/
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void setClusterSymbol( QgsMarkerSymbol *symbol /Transfer/ );
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/** Creates a QgsPointDisplacementRenderer from an existing renderer.
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* @note added in 2.5
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* @returns a new renderer if the conversion was possible, otherwise nullptr.
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*/
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static QgsPointClusterRenderer *convertFromRenderer( const QgsFeatureRenderer *renderer ) /Factory/;
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private:
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QgsPointClusterRenderer( const QgsPointClusterRenderer & );
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QgsPointClusterRenderer &operator=( const QgsPointClusterRenderer & );
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void drawGroup( QPointF centerPoint, QgsRenderContext &context, const QgsPointDistanceRenderer::ClusteredGroup &group );
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};
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