QgsRasterSymbolLegendNode Class Reference

Implementation of legend node interface for displaying raster legend entries. More...

#include <qgslayertreemodellegendnode.h>

Inheritance diagram for QgsRasterSymbolLegendNode:

Public Member Functions
	QgsRasterSymbolLegendNode (QgsLayerTreeLayer *nodeLayer, const QColor &color, const QString &label, QObject *parent=nullptr)
	Constructor for QgsRasterSymbolLegendNode. More...
QVariant	data (int role) const override
	Returns data associated with the item. Must be implemented in derived class. More...
QSizeF	drawSymbol (const QgsLegendSettings &settings, ItemContext *ctx, double itemHeight) const override
	Draws symbol on the left side of the item. More...
Public Member Functions inherited from QgsLayerTreeModelLegendNode
virtual ItemMetrics	draw (const QgsLegendSettings &settings, ItemContext *ctx)
	Entry point called from QgsLegendRenderer to do the rendering. 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

Implementation of legend node interface for displaying raster legend entries.

Since

QGIS 2.6

Definition at line 355 of file qgslayertreemodellegendnode.h.

Constructor & Destructor Documentation

QgsRasterSymbolLegendNode::QgsRasterSymbolLegendNode	(	QgsLayerTreeLayer *	nodeLayer,
		const QColor &	color,
		const QString &	label,
		QObject *	parent = nullptr
	)

Constructor for QgsRasterSymbolLegendNode.

Parameters

nodeLayer	layer node
color	color
label	label
parent	attach a parent QObject to the legend node.

Definition at line 573 of file qgslayertreemodellegendnode.cpp.

Member Function Documentation

QVariant QgsRasterSymbolLegendNode::data ( int  role ) const

overridevirtual

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

Implements QgsLayerTreeModelLegendNode.

Definition at line 580 of file qgslayertreemodellegendnode.cpp.

QSizeF QgsRasterSymbolLegendNode::drawSymbol ( const QgsLegendSettings &  settings, ItemContext *  ctx, double  itemHeight  ) const

overridevirtual

Draws symbol on the left side of the item.

Parameters

settings	Legend layout configuration
ctx	Context for rendering - may be null if only doing layout without actual rendering
itemHeight	Minimal height of the legend item - used for correct positioning when rendering

Returns

Real size of the symbol (may be bigger than "normal" symbol size from settings)

Reimplemented from QgsLayerTreeModelLegendNode.

Definition at line 596 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