QgsImageLegendNode Class Reference

Implementation of legend node interface for displaying arbitrary raster image. More...

#include <qgslayertreemodellegendnode.h>

Inheritance diagram for QgsImageLegendNode:

Public Member Functions
	QgsImageLegendNode (QgsLayerTreeLayer *nodeLayer, const QImage &img, QObject *parent=0)
virtual QVariant	data (int role) const
	Return data associated with the item.
QSizeF	drawSymbol (const QgsLegendSettings &settings, ItemContext *ctx, double itemHeight) const
	Draws symbol on the left side of the item.
Public Member Functions inherited from QgsLayerTreeModelLegendNode
	~QgsLayerTreeModelLegendNode ()
QgsLayerTreeLayer *	layerNode () const
	Return pointer to the parent layer node.
QgsLayerTreeModel *	model () const
	Return pointer to model owning this legend node.
virtual Qt::ItemFlags	flags () const
	Return item flags associated with the item.
virtual bool	setData (const QVariant &value, int role)
	Set some data associated with the item.
virtual bool	isEmbeddedInParent () const
virtual void	setEmbeddedInParent (bool embedded)
virtual QString	userLabel () const
virtual void	setUserLabel (const QString &userLabel)
virtual bool	isScaleOK (double scale) const
virtual void	invalidateMapBasedData ()
	Notification from model that information from associated map view has changed.
virtual ItemMetrics	draw (const QgsLegendSettings &settings, ItemContext *ctx)
	Entry point called from QgsLegendRenderer to do the rendering.
virtual QSizeF	drawSymbolText (const QgsLegendSettings &settings, ItemContext *ctx, const QSizeF &symbolSize) const
	Draws label on the right side of the item.

Additional Inherited Members
Public Types inherited from QgsLayerTreeModelLegendNode
enum	LegendNodeRoles { RuleKeyRole = Qt::UserRole, SymbolV2LegacyRuleKeyRole }
Signals inherited from QgsLayerTreeModelLegendNode
void	dataChanged ()
	Emitted on internal data change so the layer tree model can forward the signal to views.
Protected Member Functions inherited from QgsLayerTreeModelLegendNode
	QgsLayerTreeModelLegendNode (QgsLayerTreeLayer *nodeL, QObject *parent=0)
	Construct the node with pointer to its parent layer node.
Protected Attributes inherited from QgsLayerTreeModelLegendNode
QgsLayerTreeLayer *	mLayerNode
bool	mEmbeddedInParent
QString	mUserLabel

Detailed Description

Implementation of legend node interface for displaying arbitrary raster image.

Note

added in 2.6

Constructor & Destructor Documentation

QgsImageLegendNode::QgsImageLegendNode	(	QgsLayerTreeLayer *	nodeLayer,
		const QImage &	img,
		QObject *	parent = 0
	)

Member Function Documentation

QVariant QgsImageLegendNode::data ( int  role ) const

virtual

Return data associated with the item.

Must be implemented in derived class.

Implements QgsLayerTreeModelLegendNode.

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

virtual

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.

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

• /tmp/buildd/qgis-2.6.0+wheezy1/src/core/layertree/qgslayertreemodellegendnode.h
• /tmp/buildd/qgis-2.6.0+wheezy1/src/core/layertree/qgslayertreemodellegendnode.cpp