QgsDataDefinedSizeLegendNode Class Reference

Produces legend node with a marker symbol. More...

#include <qgslayertreemodellegendnode.h>

Inheritance diagram for QgsDataDefinedSizeLegendNode:

Public Member Functions
	QgsDataDefinedSizeLegendNode (QgsLayerTreeLayer *nodeLayer, const QgsDataDefinedSizeLegend &settings, QObject *parent=nullptr)
	Construct the node using QgsDataDefinedSizeLegend as definition of the node's appearance. More...
	~QgsDataDefinedSizeLegendNode () override
QVariant	data (int role) const override
	Returns data associated with the item. Must be implemented in derived class. More...
ItemMetrics	draw (const QgsLegendSettings &settings, ItemContext *ctx) override
	Entry point called from QgsLegendRenderer to do the rendering. More...
Public Member Functions inherited from QgsLayerTreeModelLegendNode
virtual QSizeF	drawSymbol (const QgsLegendSettings &settings, ItemContext *ctx, double itemHeight) const
	Draws symbol on the left side of the item. More...
virtual QSizeF	drawSymbolText (const QgsLegendSettings &settings, ItemContext *ctx, QSizeF symbolSize) const
	Draws label on the right side of the item. More...
virtual Qt::ItemFlags	flags () const
	Returns item flags associated with the item. Default implementation returns Qt::ItemIsEnabled. More...
virtual void	invalidateMapBasedData ()
	Notification from model that information from associated map view has changed. More...
virtual bool	isEmbeddedInParent () const
virtual bool	isScaleOK (double scale) const
QgsLayerTreeLayer *	layerNode () const
	Returns pointer to the parent layer node. More...
QgsLayerTreeModel *	model () const
	Returns pointer to model owning this legend node. More...
virtual bool	setData (const QVariant &value, int role)
	Sets some data associated with the item. Default implementation does nothing and returns false. More...
virtual void	setEmbeddedInParent (bool embedded)
virtual void	setUserLabel (const QString &userLabel)
virtual QString	userLabel () const

Additional Inherited Members
Public Types inherited from QgsLayerTreeModelLegendNode
enum	LegendNodeRoles { RuleKeyRole = Qt::UserRole, ParentRuleKeyRole }
Signals inherited from QgsLayerTreeModelLegendNode
void	dataChanged ()
	Emitted on internal data change so the layer tree model can forward the signal to views. More...
Protected Member Functions inherited from QgsLayerTreeModelLegendNode
	QgsLayerTreeModelLegendNode (QgsLayerTreeLayer *nodeL, QObject *parent=nullptr)
	Construct the node with pointer to its parent layer node. More...
QgsRenderContext *	createTemporaryRenderContext () const
	Returns a temporary context or null if legendMapViewData are not valid. More...
Protected Attributes inherited from QgsLayerTreeModelLegendNode
bool	mEmbeddedInParent
QgsLayerTreeLayer *	mLayerNode = nullptr
QString	mUserLabel

Detailed Description

Produces legend node with a marker symbol.

Since

QGIS 3.0

Definition at line 432 of file qgslayertreemodellegendnode.h.

Constructor & Destructor Documentation

QgsDataDefinedSizeLegendNode::QgsDataDefinedSizeLegendNode	(	QgsLayerTreeLayer *	nodeLayer,
		const QgsDataDefinedSizeLegend &	settings,
		QObject *	parent = nullptr
	)

Construct the node using QgsDataDefinedSizeLegend as definition of the node's appearance.

Definition at line 765 of file qgslayertreemodellegendnode.cpp.

QgsDataDefinedSizeLegendNode::~QgsDataDefinedSizeLegendNode ( )

override

Definition at line 771 of file qgslayertreemodellegendnode.cpp.

Member Function Documentation

QVariant QgsDataDefinedSizeLegendNode::data ( int  role ) const

overridevirtual

Returns data associated with the item. Must be implemented in derived class.

Implements QgsLayerTreeModelLegendNode.

Definition at line 776 of file qgslayertreemodellegendnode.cpp.

QgsLayerTreeModelLegendNode::ItemMetrics QgsDataDefinedSizeLegendNode::draw ( const QgsLegendSettings &  settings, QgsLayerTreeModelLegendNode::ItemContext *  ctx  )

overridevirtual

Entry point called from QgsLegendRenderer to do the rendering.

Default implementation calls drawSymbol() and drawSymbolText() methods.

If ctx is null, this is just first stage when preparing layout - without actual rendering.

Reimplemented from QgsLayerTreeModelLegendNode.

Definition at line 791 of file qgslayertreemodellegendnode.cpp.

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The documentation for this class was generated from the following files:

• /build/qgis-3.4.15+24xenial/src/core/layertree/qgslayertreemodellegendnode.h
• /build/qgis-3.4.15+24xenial/src/core/layertree/qgslayertreemodellegendnode.cpp