A widget for selecting a coordinate reference system from a tree. More...

#include <qgsprojectionselectiontreewidget.h>

Inheritance diagram for QgsProjectionSelectionTreeWidget:

[legend]

Public Slots
void	clearRecentCrs ()
	Clear the list of recent projections.
Q_DECL_DEPRECATED void	pushProjectionToFront ()
	Marks the current selected projection for push to front of recent projections list.
void	setCrs (const QgsCoordinateReferenceSystem &crs)
	Sets the initial crs to show within the dialog.
void	setOgcWmsCrsFilter (const QSet< QString > &crsFilter)
	Filters this widget by the given CRSs.
void	setPreviewRect (const QgsRectangle &rect)
	Sets the initial "preview" rectangle for the bounds overview map.

Signals
void	crsSelected ()
	Emitted when a projection is selected in the widget.
void	hasValidSelectionChanged (bool isValid)
	Emitted when the selection in the tree is changed from a valid selection to an invalid selection, or vice-versa.
Q_DECL_DEPRECATED void	initialized ()
	Notifies others that the widget is now fully initialized, including deferred selection of projection.
void	projectionDoubleClicked ()
	Emitted when a projection is double clicked in the list.

Public Member Functions
	QgsProjectionSelectionTreeWidget (QWidget *parent=nullptr, QgsCoordinateReferenceSystemProxyModel::Filters filters=QgsCoordinateReferenceSystemProxyModel::FilterHorizontal\|QgsCoordinateReferenceSystemProxyModel::FilterCompound)
	Constructor for QgsProjectionSelectionTreeWidget, with the specified parent widget.
	~QgsProjectionSelectionTreeWidget () override
QgsCoordinateReferenceSystem	crs () const
	Returns the CRS currently selected in the widget.
QgsCoordinateReferenceSystemProxyModel::Filters	filters () const
	Returns the filters set on the available CRS.
bool	hasValidSelection () const
	Returns `true` if the current selection in the widget is a valid choice.
QgsRectangle	previewRect () const
	The initial "preview" rectangle for the bounds overview map.
void	setFilters (QgsCoordinateReferenceSystemProxyModel::Filters filters)
	Sets filters for the available CRS.
void	setNotSetText (const QString &text)
	Sets the text to show for the not set option.
void	setShowBoundsMap (bool show)
	Sets whether to show the bounds preview map.
void	setShowNoProjection (bool show)
	Sets whether a "no/invalid" projection option should be shown.
bool	showBoundsMap () const
	Returns whether the bounds preview map is shown.
bool	showNoProjection () const
	Returns whether the "no/invalid" projection option is shown.

Protected Member Functions
bool	eventFilter (QObject obj, QEvent ev) override
void	resizeEvent (QResizeEvent *event) override

Detailed Description

A widget for selecting a coordinate reference system from a tree.

This widget implements a tree view of projections, as seen in the QgsProjectionSelectionDialog dialog. In most cases it is more suitable to use the compact QgsProjectionSelectionWidget widget.

See also: QgsProjectionSelectionDialog; QgsProjectionSelectionWidget

Definition at line 74 of file qgsprojectionselectiontreewidget.h.

Constructor & Destructor Documentation

◆ QgsProjectionSelectionTreeWidget()

QgsProjectionSelectionTreeWidget::QgsProjectionSelectionTreeWidget	(	QWidget *	parent = nullptr,
		QgsCoordinateReferenceSystemProxyModel::Filters	filters = QgsCoordinateReferenceSystemProxyModel::FilterHorizontal \| QgsCoordinateReferenceSystemProxyModel::FilterCompound )

Constructor for QgsProjectionSelectionTreeWidget, with the specified parent widget.

Since QGIS 3.34, the optional filter argument can be used to specify filters on the systems shown in the widget. The default is to show all horizontal and compound CRS in order to match the behavior of older QGIS releases. The filter can be altered to also include vertical CRS if desired.

Definition at line 45 of file qgsprojectionselectiontreewidget.cpp.

◆ ~QgsProjectionSelectionTreeWidget()

QgsProjectionSelectionTreeWidget::~QgsProjectionSelectionTreeWidget ( )

override

Definition at line 150 of file qgsprojectionselectiontreewidget.cpp.

Member Function Documentation

◆ clearRecentCrs

void QgsProjectionSelectionTreeWidget::clearRecentCrs ( )

slot

Clear the list of recent projections.

Since: QGIS 3.32

Definition at line 563 of file qgsprojectionselectiontreewidget.cpp.

◆ crs()

QgsCoordinateReferenceSystem QgsProjectionSelectionTreeWidget::crs ( ) const

Returns the CRS currently selected in the widget.

See also: setCrs()

Definition at line 264 of file qgsprojectionselectiontreewidget.cpp.

◆ crsSelected

void QgsProjectionSelectionTreeWidget::crsSelected ( )

signal

Emitted when a projection is selected in the widget.

◆ eventFilter()

bool QgsProjectionSelectionTreeWidget::eventFilter	(	QObject *	obj,
		QEvent *	ev )

overrideprotected

Definition at line 171 of file qgsprojectionselectiontreewidget.cpp.

◆ filters()

QgsCoordinateReferenceSystemProxyModel::Filters QgsProjectionSelectionTreeWidget::filters ( ) const

Returns the filters set on the available CRS.

See also: setFilters()

Since: QGIS 3.34

Definition at line 248 of file qgsprojectionselectiontreewidget.cpp.

◆ hasValidSelection()

bool QgsProjectionSelectionTreeWidget::hasValidSelection ( ) const

Returns true if the current selection in the widget is a valid choice.

Valid selections include any projection and also the "no/invalid projection" option (if setShowNoProjection() was called). Invalid selections are the group headers (such as "Geographic Coordinate Systems")

Definition at line 321 of file qgsprojectionselectiontreewidget.cpp.

◆ hasValidSelectionChanged

void QgsProjectionSelectionTreeWidget::hasValidSelectionChanged ( bool isValid )

signal

Emitted when the selection in the tree is changed from a valid selection to an invalid selection, or vice-versa.

Since: QGIS 3.18

◆ initialized

Q_DECL_DEPRECATED void QgsProjectionSelectionTreeWidget::initialized ( )

signal

Notifies others that the widget is now fully initialized, including deferred selection of projection.

Deprecated: QGIS 3.40. No longer emitted.

◆ previewRect()

QgsRectangle QgsProjectionSelectionTreeWidget::previewRect ( ) const

The initial "preview" rectangle for the bounds overview map.

See also: previewRect()

Definition at line 243 of file qgsprojectionselectiontreewidget.cpp.

◆ projectionDoubleClicked

void QgsProjectionSelectionTreeWidget::projectionDoubleClicked ( )

signal

Emitted when a projection is double clicked in the list.

◆ pushProjectionToFront

void QgsProjectionSelectionTreeWidget::pushProjectionToFront ( )

slot

Marks the current selected projection for push to front of recent projections list.

Deprecated: QGIS 3.40. Has no effect since QGIS 3.20.

Definition at line 472 of file qgsprojectionselectiontreewidget.cpp.

◆ resizeEvent()

void QgsProjectionSelectionTreeWidget::resizeEvent ( QResizeEvent * event )

overrideprotected

Definition at line 161 of file qgsprojectionselectiontreewidget.cpp.

◆ setCrs

void QgsProjectionSelectionTreeWidget::setCrs ( const QgsCoordinateReferenceSystem & crs )

slot

Sets the initial crs to show within the dialog.

See also: crs()

Definition at line 212 of file qgsprojectionselectiontreewidget.cpp.

◆ setFilters()

void QgsProjectionSelectionTreeWidget::setFilters ( QgsCoordinateReferenceSystemProxyModel::Filters filters )

Sets filters for the available CRS.

See also: filters()

Since: QGIS 3.34

Definition at line 253 of file qgsprojectionselectiontreewidget.cpp.

◆ setNotSetText()

void QgsProjectionSelectionTreeWidget::setNotSetText ( const QString & text )

Sets the text to show for the not set option.

Note that this option is not shown by default and must be set visible by calling setShowNoProjection().

Since: QGIS 3.16

Definition at line 311 of file qgsprojectionselectiontreewidget.cpp.

◆ setOgcWmsCrsFilter

void QgsProjectionSelectionTreeWidget::setOgcWmsCrsFilter ( const QSet< QString > & crsFilter )

slot

Filters this widget by the given CRSs.

Sets this widget to filter the available projections to those listed by the given Coordinate Reference Systems.

Parameters

crsFilter a list of the authority:id strings for Coordinate Reference Systems to include in the widget.

Definition at line 337 of file qgsprojectionselectiontreewidget.cpp.

◆ setPreviewRect

void QgsProjectionSelectionTreeWidget::setPreviewRect ( const QgsRectangle & rect )

slot

Sets the initial "preview" rectangle for the bounds overview map.

See also: previewRect()

Definition at line 238 of file qgsprojectionselectiontreewidget.cpp.

◆ setShowBoundsMap()

void QgsProjectionSelectionTreeWidget::setShowBoundsMap ( bool show )

Sets whether to show the bounds preview map.

See also: showBoundsMap()

Definition at line 300 of file qgsprojectionselectiontreewidget.cpp.

◆ setShowNoProjection()

void QgsProjectionSelectionTreeWidget::setShowNoProjection ( bool show )

Sets whether a "no/invalid" projection option should be shown.

If this option is selected, calling crs() will return an invalid QgsCoordinateReferenceSystem.

See also: showNoProjection()

Definition at line 290 of file qgsprojectionselectiontreewidget.cpp.

◆ showBoundsMap()

bool QgsProjectionSelectionTreeWidget::showBoundsMap ( ) const

Returns whether the bounds preview map is shown.

See also: setShowBoundsMap()

Definition at line 316 of file qgsprojectionselectiontreewidget.cpp.

◆ showNoProjection()

bool QgsProjectionSelectionTreeWidget::showNoProjection ( ) const

Returns whether the "no/invalid" projection option is shown.

If this option is selected, calling crs() will return an invalid QgsCoordinateReferenceSystem.

See also: setShowNoProjection()

Definition at line 306 of file qgsprojectionselectiontreewidget.cpp.

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

/build/qgis-3.99.0+git20251210+2fe06baccd8+99sid/src/gui/proj/qgsprojectionselectiontreewidget.h
/build/qgis-3.99.0+git20251210+2fe06baccd8+99sid/src/gui/proj/qgsprojectionselectiontreewidget.cpp

Public Slots

Signals

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ QgsProjectionSelectionTreeWidget()

◆ ~QgsProjectionSelectionTreeWidget()

Member Function Documentation

◆ clearRecentCrs

◆ crs()

◆ crsSelected

◆ eventFilter()

◆ filters()

◆ hasValidSelection()

◆ hasValidSelectionChanged

◆ initialized

◆ previewRect()

◆ projectionDoubleClicked

◆ pushProjectionToFront

◆ resizeEvent()

◆ setCrs

◆ setFilters()

◆ setNotSetText()

◆ setOgcWmsCrsFilter

◆ setPreviewRect

◆ setShowBoundsMap()

◆ setShowNoProjection()

◆ showBoundsMap()

◆ showNoProjection()