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QGIS/python/core/symbology-ng/qgsnullsymbolrenderer.sip

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[FEATURE] Null ("No symbol") renderer Using this renderer no symbol will be drawn for features, but labeling, diagrams and other non-symbol parts will still be shown. Selections can still be made on the layer in the canvas and selected features will be rendered with a default symbol. Features being edited will also be shown. This is intended as a handy shortcut for layers which you only want to show labels or diagrams for, and avoids the need to render symbols with totally transparent fill/border to achieve this. (fix #12131)
2016-04-06 19:25:00 +10:00
/** \ingroup core
* \class QgsNullSymbolRenderer
* \brief Null symbol renderer. Renderer which draws no symbols for features by default, but allows for labeling
* and diagrams for the layer. Selected features will also be drawn with a default symbol.
* \note Added in version 2.16
*/
scripts/replacev2.sh run
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class QgsNullSymbolRenderer : QgsFeatureRenderer
[FEATURE] Null ("No symbol") renderer Using this renderer no symbol will be drawn for features, but labeling, diagrams and other non-symbol parts will still be shown. Selections can still be made on the layer in the canvas and selected features will be rendered with a default symbol. Features being edited will also be shown. This is intended as a handy shortcut for layers which you only want to show labels or diagrams for, and avoids the need to render symbols with totally transparent fill/border to achieve this. (fix #12131)
2016-04-06 19:25:00 +10:00
{
%TypeHeaderCode
#include <qgsnullsymbolrenderer.h>
%End
public:
QgsNullSymbolRenderer();
virtual ~QgsNullSymbolRenderer();
removed V2 from QgsSymbolV2*
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virtual QgsSymbol* symbolForFeature( QgsFeature& feature, QgsRenderContext& context );
virtual QgsSymbol* originalSymbolForFeature( QgsFeature& feature, QgsRenderContext& context );
[FEATURE] Null ("No symbol") renderer Using this renderer no symbol will be drawn for features, but labeling, diagrams and other non-symbol parts will still be shown. Selections can still be made on the layer in the canvas and selected features will be rendered with a default symbol. Features being edited will also be shown. This is intended as a handy shortcut for layers which you only want to show labels or diagrams for, and avoids the need to render symbols with totally transparent fill/border to achieve this. (fix #12131)
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virtual bool renderFeature( QgsFeature& feature, QgsRenderContext& context, int layer = -1, bool selected = false, bool drawVertexMarker = false );
virtual void startRender( QgsRenderContext& context, const QgsFields& fields );
virtual void stopRender( QgsRenderContext& context );
virtual bool willRenderFeature( QgsFeature& feat, QgsRenderContext& context );
referencedColumns returns QSet<QString> instead of QStringList The order of the elements is irrelevant and duplicate elements are unwanted. It is therefore a perfect candidate for a set instead of a list. This prevents filtering for duplicates manually be replacing some filer codes with (more performant) builtin methods of QSet.
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virtual QSet<QString> usedAttributes() const;
[FEATURE] Null ("No symbol") renderer Using this renderer no symbol will be drawn for features, but labeling, diagrams and other non-symbol parts will still be shown. Selections can still be made on the layer in the canvas and selected features will be rendered with a default symbol. Features being edited will also be shown. This is intended as a handy shortcut for layers which you only want to show labels or diagrams for, and avoids the need to render symbols with totally transparent fill/border to achieve this. (fix #12131)
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virtual QString dump() const;
scripts/replacev2.sh run
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virtual QgsFeatureRenderer* clone() const /Factory/;
Remove deprecated members and fix TODOs for QgsFeatureRenderer
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virtual QgsSymbolList symbols( QgsRenderContext& context );
[FEATURE] Null ("No symbol") renderer Using this renderer no symbol will be drawn for features, but labeling, diagrams and other non-symbol parts will still be shown. Selections can still be made on the layer in the canvas and selected features will be rendered with a default symbol. Features being edited will also be shown. This is intended as a handy shortcut for layers which you only want to show labels or diagrams for, and avoids the need to render symbols with totally transparent fill/border to achieve this. (fix #12131)
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/** Creates a null renderer from XML element.
* @param element DOM element
* @returns new null symbol renderer
*/
scripts/replacev2.sh run
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static QgsFeatureRenderer* create( QDomElement& element ) /Factory/;
[FEATURE] Null ("No symbol") renderer Using this renderer no symbol will be drawn for features, but labeling, diagrams and other non-symbol parts will still be shown. Selections can still be made on the layer in the canvas and selected features will be rendered with a default symbol. Features being edited will also be shown. This is intended as a handy shortcut for layers which you only want to show labels or diagrams for, and avoids the need to render symbols with totally transparent fill/border to achieve this. (fix #12131)
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virtual QDomElement save( QDomDocument& doc );
/** Creates a QgsNullSymbolRenderer from an existing renderer.
* @param renderer renderer to convert from
* @returns a new renderer if the conversion was possible, otherwise nullptr.
*/
scripts/replacev2.sh run
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static QgsNullSymbolRenderer* convertFromRenderer( const QgsFeatureRenderer *renderer ) /Factory/;
[FEATURE] Null ("No symbol") renderer Using this renderer no symbol will be drawn for features, but labeling, diagrams and other non-symbol parts will still be shown. Selections can still be made on the layer in the canvas and selected features will be rendered with a default symbol. Features being edited will also be shown. This is intended as a handy shortcut for layers which you only want to show labels or diagrams for, and avoids the need to render symbols with totally transparent fill/border to achieve this. (fix #12131)
2016-04-06 19:25:00 +10:00
};
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