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89 lines
3.1 KiB
Plaintext
89 lines
3.1 KiB
Plaintext
/***************************************************************************
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qgsgeometrygeneratorsymbollayer.sip
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---------------------
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begin : November 2015
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copyright : (C) 2015 by Matthias Kuhn
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email : matthias at opengis dot ch
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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class QgsGeometryGeneratorSymbolLayer : QgsSymbolLayer
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{
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%TypeHeaderCode
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#include "qgsgeometrygeneratorsymbollayer.h"
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%End
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public:
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static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() );
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QString layerType() const;
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/**
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* Set the type of symbol which should be created.
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* Should match with the return type of the expression.
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*
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* @param symbolType The symbol type which shall be used below this symbol.
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*/
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void setSymbolType( QgsSymbol::SymbolType symbolType );
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/**
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* Access the symbol type. This defines the type of geometry
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* that is created by this generator.
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*
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* @return Symbol type
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*/
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QgsSymbol::SymbolType symbolType() const;
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void startRender( QgsSymbolRenderContext &context );
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void stopRender( QgsSymbolRenderContext &context );
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QgsSymbolLayer *clone() const;
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QgsStringMap properties() const;
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void drawPreviewIcon( QgsSymbolRenderContext &context, QSize size );
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/**
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* Set the expression to generate this geometry.
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*/
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void setGeometryExpression( const QString &exp );
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/**
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* Get the expression to generate this geometry.
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*/
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QString geometryExpression() const;
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virtual QgsSymbol *subSymbol();
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virtual bool setSubSymbol( QgsSymbol *symbol );
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virtual QSet<QString> usedAttributes( const QgsRenderContext &context ) const;
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//! Will always return true.
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//! This is a hybrid layer, it constructs its own geometry so it does not
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//! care about the geometry of its parents.
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bool isCompatibleWithSymbol( QgsSymbol *symbol );
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/**
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* Will render this symbol layer using the context.
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* In comparison to other symbols there is no geometry passed in, since
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* the geometry will be created based on information from the context
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* which contains a QgsRenderContext which in turn contains an expression
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* context which is available to the evaluated expression.
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*
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* @param context The rendering context which will be used to render and to
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* construct a geometry.
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*/
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virtual void render( QgsSymbolRenderContext &context );
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void setColor( const QColor &color );
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private:
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QgsGeometryGeneratorSymbolLayer( const QgsGeometryGeneratorSymbolLayer © );
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};
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