A sort filter proxy model to easily reproduce the legend/layer tree in a tree view. More...

#include <qgslayertreefilterproxymodel.h>

Inheritance diagram for QgsLayerTreeFilterProxyModel:

Public Slots
virtual void	setFilterText (const QString &filterText=QString())
	Sets the filter text to search for a layer in the tree.

Public Member Functions
	QgsLayerTreeFilterProxyModel (QObject *parent=nullptr)
	Constructor.

QList< QgsMapLayer * >	checkedLayers () const
	Returns the checked layers.

virtual int	columnCount (const QModelIndex &parent) const override

virtual QVariant	data (const QModelIndex &index, int role) const override

virtual Qt::ItemFlags	flags (const QModelIndex &idx) const override

QModelIndex	index (int row, int column, const QModelIndex &parent=QModelIndex()) const override

QgsLayerTreeModel *	layerTreeModel () const
	Rerturns the layer tree model.

QgsMapLayer *	mapLayer (const QModelIndex &idx) const
	Returns the map layer at a given index.

bool	nodeShown (QgsLayerTreeNode *node) const
	Returns `true` if the specified node will be shown in the model.

QModelIndex	parent (const QModelIndex &child) const override

void	setCheckedLayers (const QList< QgsMapLayer * > layers)
	Initialize the list of checked layers.

virtual bool	setData (const QModelIndex &index, const QVariant &value, int role) override

void	setFilters (Qgis::LayerFilters filters)
	Defines the type layers (vector, raster, etc) shown in the tree If the list is empty, all types are shown.

void	setLayerTreeModel (QgsLayerTreeModel *layerTreeModel)
	Sets the layer tree model.

void	setShowPrivateLayers (bool showPrivate)
	Determines if private layers are shown.

bool	showPrivateLayers () const
	Returns if private layers are shown.

QModelIndex	sibling (int row, int column, const QModelIndex &idx) const override

Protected Member Functions
bool	filterAcceptsRow (int sourceRow, const QModelIndex &sourceParent) const override

virtual bool	isLayerChecked (QgsMapLayer *layer) const
	Returns if the layer is checked or not.

virtual void	setLayerChecked (QgsMapLayer *layer, bool checked)
	This will set if the layer is checked or not.

Detailed Description

A sort filter proxy model to easily reproduce the legend/layer tree in a tree view.

Layers are checkable by default. Symbology nodes will not be shown. Layers can be filtered by their type.

For more complex use-cases, the model can be re-implemented to allow a different interaction or to add more columns.

Since: QGIS 3.14

Definition at line 41 of file qgslayertreefilterproxymodel.h.

Constructor & Destructor Documentation

◆ QgsLayerTreeFilterProxyModel()

QgsLayerTreeFilterProxyModel::QgsLayerTreeFilterProxyModel ( QObject * parent = nullptr )

Constructor.

Definition at line 24 of file qgslayertreefilterproxymodel.cpp.

Member Function Documentation

◆ checkedLayers()

QList< QgsMapLayer * > QgsLayerTreeFilterProxyModel::checkedLayers ( ) const

inline

Returns the checked layers.

Definition at line 55 of file qgslayertreefilterproxymodel.h.

◆ columnCount()

int QgsLayerTreeFilterProxyModel::columnCount ( const QModelIndex & parent ) const

overridevirtual

Definition at line 42 of file qgslayertreefilterproxymodel.cpp.

◆ data()

QVariant QgsLayerTreeFilterProxyModel::data	(	const QModelIndex &	index,
		int	role
	)		const

overridevirtual

Definition at line 209 of file qgslayertreefilterproxymodel.cpp.

◆ filterAcceptsRow()

bool QgsLayerTreeFilterProxyModel::filterAcceptsRow	(	int	sourceRow,
		const QModelIndex &	sourceParent
	)		const

overrideprotected

Definition at line 131 of file qgslayertreefilterproxymodel.cpp.

◆ flags()

Qt::ItemFlags QgsLayerTreeFilterProxyModel::flags ( const QModelIndex & idx ) const

overridevirtual

Definition at line 48 of file qgslayertreefilterproxymodel.cpp.

◆ index()

QModelIndex QgsLayerTreeFilterProxyModel::index	(	int	row,
		int	column,
		const QModelIndex &	parent = `QModelIndex()`
	)		const

override

Definition at line 57 of file qgslayertreefilterproxymodel.cpp.

◆ isLayerChecked()

bool QgsLayerTreeFilterProxyModel::isLayerChecked ( QgsMapLayer * layer ) const

protectedvirtual

Returns if the layer is checked or not.

Definition at line 137 of file qgslayertreefilterproxymodel.cpp.

◆ layerTreeModel()

QgsLayerTreeModel * QgsLayerTreeFilterProxyModel::layerTreeModel ( ) const

Rerturns the layer tree model.

Definition at line 100 of file qgslayertreefilterproxymodel.cpp.

◆ mapLayer()

QgsMapLayer * QgsLayerTreeFilterProxyModel::mapLayer ( const QModelIndex & idx ) const

Returns the map layer at a given index.

Definition at line 77 of file qgslayertreefilterproxymodel.cpp.

◆ nodeShown()

bool QgsLayerTreeFilterProxyModel::nodeShown ( QgsLayerTreeNode * node ) const

Returns true if the specified node will be shown in the model.

Since: QGIS 3.40

Definition at line 175 of file qgslayertreefilterproxymodel.cpp.

◆ parent()

QModelIndex QgsLayerTreeFilterProxyModel::parent ( const QModelIndex & child ) const

override

Definition at line 66 of file qgslayertreefilterproxymodel.cpp.

◆ setCheckedLayers()

void QgsLayerTreeFilterProxyModel::setCheckedLayers ( const QList< QgsMapLayer * > layers )

Initialize the list of checked layers.

Note: If the model is re-implemented, this method might become useless

Definition at line 34 of file qgslayertreefilterproxymodel.cpp.

◆ setData()

bool QgsLayerTreeFilterProxyModel::setData	(	const QModelIndex &	index,
		const QVariant &	value,
		int	role
	)

overridevirtual

Definition at line 277 of file qgslayertreefilterproxymodel.cpp.

◆ setFilters()

void QgsLayerTreeFilterProxyModel::setFilters ( Qgis::LayerFilters filters )

Defines the type layers (vector, raster, etc) shown in the tree If the list is empty, all types are shown.

Definition at line 125 of file qgslayertreefilterproxymodel.cpp.

◆ setFilterText

void QgsLayerTreeFilterProxyModel::setFilterText ( const QString & filterText = QString() )

virtualslot

Sets the filter text to search for a layer in the tree.

Definition at line 91 of file qgslayertreefilterproxymodel.cpp.

◆ setLayerChecked()

void QgsLayerTreeFilterProxyModel::setLayerChecked	(	QgsMapLayer *	layer,
		bool	checked
	)

protectedvirtual

This will set if the layer is checked or not.

Definition at line 142 of file qgslayertreefilterproxymodel.cpp.

◆ setLayerTreeModel()

void QgsLayerTreeFilterProxyModel::setLayerTreeModel ( QgsLayerTreeModel * layerTreeModel )

Sets the layer tree model.

Definition at line 105 of file qgslayertreefilterproxymodel.cpp.

◆ setShowPrivateLayers()

void QgsLayerTreeFilterProxyModel::setShowPrivateLayers ( bool showPrivate )

Determines if private layers are shown.

Defaults to true.

Since: QGIS 3.40

Definition at line 116 of file qgslayertreefilterproxymodel.cpp.

◆ showPrivateLayers()

bool QgsLayerTreeFilterProxyModel::showPrivateLayers ( ) const

Returns if private layers are shown.

Defaults to true.

Since: QGIS 3.40

Definition at line 111 of file qgslayertreefilterproxymodel.cpp.

◆ sibling()

QModelIndex QgsLayerTreeFilterProxyModel::sibling	(	int	row,
		int	column,
		const QModelIndex &	idx
	)		const

override

Definition at line 71 of file qgslayertreefilterproxymodel.cpp.

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

/build/qgis-3.99.0+git20250718+f78f5286a64+99sid/src/core/layertree/qgslayertreefilterproxymodel.h
/build/qgis-3.99.0+git20250718+f78f5286a64+99sid/src/core/layertree/qgslayertreefilterproxymodel.cpp

Public Slots

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ QgsLayerTreeFilterProxyModel()

Member Function Documentation

◆ checkedLayers()

◆ columnCount()

◆ data()

◆ filterAcceptsRow()

◆ flags()

◆ index()

◆ isLayerChecked()

◆ layerTreeModel()

◆ mapLayer()

◆ nodeShown()

◆ parent()

◆ setCheckedLayers()

◆ setData()

◆ setFilters()

◆ setFilterText

◆ setLayerChecked()

◆ setLayerTreeModel()

◆ setShowPrivateLayers()

◆ showPrivateLayers()

◆ sibling()