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/**Draws a symbol at the current y position and returns the new x position. Returns real symbol height, because for points,
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it is possible that it differs from mSymbolHeight*/
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void drawSymbol( QPainter* p, QgsSymbol* s, double currentYCoord, double& currentXPosition, double& symbolHeight, int layerOpacity = 255 ) const;
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void drawSymbolV2( QPainter* p, QgsSymbolV2* s, double currentYCoord, double& currentXPosition, double& symbolHeight, int layerOpacity = 255 ) const;
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void drawPointSymbol( QPainter*, QgsSymbol* s, double currentYCoord, double& currentXPosition, double& symbolHeight, int opacity = 255 ) const;
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void drawLineSymbol( QPainter*, QgsSymbol* s, double currentYCoord, double& currentXPosition, int opacity = 255 ) const;
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void drawPolygonSymbol( QPainter* p, QgsSymbol* s, double currentYCoord, double& currentXPosition, int opacity = 255 ) const;