QgsMapToolDigitizeFeature Class Reference

This tool digitizes geometry of new point/line/polygon features on already existing vector layers Once the map tool is enabled, user can digitize the feature geometry. More...

#include <qgsmaptooldigitizefeature.h>

Inheritance diagram for QgsMapToolDigitizeFeature:

Signals
void	digitizingCanceled ()
	Emitted when the digitizing process was interrupted by the user.
void	digitizingCompleted (const QgsFeature &feature)
	Emitted whenever the digitizing has been successfully completed.
void	digitizingFinished ()
	Emitted whenever the digitizing has been ended without digitizing any feature.
Signals inherited from QgsMapTool
void	activated ()
	signal emitted once the map tool is activated
void	deactivated ()
	signal emitted once the map tool is deactivated
void	messageDiscarded ()
	emit signal to clear previous message
void	messageEmitted (const QString &message, Qgis::MessageLevel=Qgis::MessageLevel::Info)
	emit a message
void	reactivated ()

Public Member Functions
	QgsMapToolDigitizeFeature (QgsMapCanvas *canvas, QgsAdvancedDigitizingDockWidget *cadDockWidget, CaptureMode mode=QgsMapToolCapture::CaptureNone)
	QgsMapToolDigitizeFeature is a map tool to digitize a feature geometry.
void	activate () override
	Registers this maptool with the cad dock widget.
void	cadCanvasReleaseEvent (QgsMapMouseEvent *e) override
	Override this method when subclassing this class.
QgsMapToolCapture::Capabilities	capabilities () const override
	Returns flags containing the supported capabilities.
void	deactivate () override
	Unregisters this maptool from the cad dock widget.
void	keyPressEvent (QKeyEvent *e) override
	Intercept key events like Esc or Del to delete the last point.
void	setLayer (QgsMapLayer *vl)
	Change the layer edited by the map tool.
bool	supportsTechnique (Qgis::CaptureTechnique technique) const override
	Returns true if the tool supports the specified capture technique.
Public Member Functions inherited from QgsMapToolCaptureLayerGeometry
	QgsMapToolCaptureLayerGeometry (QgsMapCanvas *canvas, QgsAdvancedDigitizingDockWidget *cadDockWidget, CaptureMode mode)
	Constructor.
Public Member Functions inherited from QgsMapToolCapture
	QgsMapToolCapture (QgsMapCanvas *canvas, QgsAdvancedDigitizingDockWidget *cadDockWidget, CaptureMode mode)
	constructor
	~QgsMapToolCapture () override
int	addCurve (QgsCurve *c)
	Adds a whole curve (e.g. circularstring) to the captured geometry. Curve must be in map CRS.
void	cadCanvasMoveEvent (QgsMapMouseEvent *e) override
	Override this method when subclassing this class.
const QgsCompoundCurve *	captureCurve () const
	Gets the capture curve.
void	clean () override
	convenient method to clean members
void	clearCurve ()
	Clear capture curve.
Qgis::CaptureTechnique	currentCaptureTechnique () const
	Returns the active capture technique.
void	deleteTempRubberBand ()
	Clean a temporary rubberband.
QgsPoint	mapPoint (const QgsMapMouseEvent &e) const
	Creates a QgsPoint with ZM support if necessary (according to the WkbType of the current layer).
QgsPoint	mapPoint (const QgsPointXY &point) const
	Creates a QgsPoint with ZM support if necessary (according to the WkbType of the current layer).
CaptureMode	mode () const
	The capture mode.
void	setCurrentCaptureTechnique (Qgis::CaptureTechnique technique)
	Sets the current capture if it is supported by the map tool.
void	setCurrentShapeMapTool (const QgsMapToolShapeMetadata *shapeMapToolMetadata)
	Sets the current shape tool.
QList< QgsPointLocator::Match >	snappingMatches () const
	Returns a list of matches for each point on the captureCurve.
QgsRubberBand *	takeRubberBand ()
	Returns the rubberBand currently owned by this map tool and transfers ownership to the caller.
Public Member Functions inherited from QgsMapToolAdvancedDigitizing
	QgsMapToolAdvancedDigitizing (QgsMapCanvas *canvas, QgsAdvancedDigitizingDockWidget *cadDockWidget)
	Creates an advanced digitizing maptool.
virtual void	cadCanvasPressEvent (QgsMapMouseEvent *e)
	Override this method when subclassing this class.
QgsAdvancedDigitizingDockWidget *	cadDockWidget () const
void	canvasMoveEvent (QgsMapMouseEvent *e) override
	Catch the mouse move event, filters it, transforms it to map coordinates and send it to virtual method.
void	canvasPressEvent (QgsMapMouseEvent *e) override
	Catch the mouse press event, filters it, transforms it to map coordinates and send it to virtual method.
void	canvasReleaseEvent (QgsMapMouseEvent *e) override
	Catch the mouse release event, filters it, transforms it to map coordinates and send it to virtual method.
bool	isAdvancedDigitizingAllowed () const
	Returns whether functionality of advanced digitizing dock widget is currently allowed.
bool	isAutoSnapEnabled () const
	Returns whether mouse events (press/move/release) should automatically try to snap mouse position (according to the snapping configuration of map canvas) before passing the mouse coordinates to the tool.
virtual QgsMapLayer *	layer () const
	Returns the layer associated with the map tool.
void	setSnapToLayerGridEnabled (bool snapToLayerGridEnabled)
	Enables or disables snap to grid of mouse events.
bool	snapToLayerGridEnabled () const
	Enables or disables snap to grid of mouse events.
Public Member Functions inherited from QgsMapToolEdit
	QgsMapToolEdit (QgsMapCanvas *canvas)
QgsGeometryRubberBand *	createGeometryRubberBand (Qgis::GeometryType geometryType=Qgis::GeometryType::Line, bool alternativeBand=false) const
	Creates a geometry rubber band with the color/line width from the QGIS settings.
Flags	flags () const override
	Returns the flags for the map tool.
Public Member Functions inherited from QgsMapTool
	~QgsMapTool () override
QAction *	action ()
	Returns associated action with map tool or nullptr if no action is associated.
QAbstractButton *	button ()
	Returns associated button with map tool or nullptr if no button is associated.
QgsMapCanvas *	canvas () const
	returns pointer to the tool's map canvas
virtual void	canvasDoubleClickEvent (QgsMapMouseEvent *e)
	Mouse double-click event for overriding. Default implementation does nothing.
virtual bool	canvasToolTipEvent (QHelpEvent *e)
	Tooltip event for overriding.
virtual bool	gestureEvent (QGestureEvent *e)
	gesture event for overriding. Default implementation does nothing.
bool	isActive () const
	Returns if the current map tool active on the map canvas.
virtual void	keyReleaseEvent (QKeyEvent *e)
	Key event for overriding. Default implementation does nothing.
virtual void	populateContextMenu (QMenu *menu)
	Allows the tool to populate and customize the given menu, prior to showing it in response to a right-mouse button click.
virtual bool	populateContextMenuWithEvent (QMenu *menu, QgsMapMouseEvent *event)
	Allows the tool to populate and customize the given menu, prior to showing it in response to a right-mouse button click.
virtual void	reactivate ()
	Called when the map tool is being activated while it is already active.
void	setAction (QAction *action)
	Use this to associate a QAction to this maptool.
void	setButton (QAbstractButton *button)
	Use this to associate a button to this maptool.
virtual void	setCursor (const QCursor &cursor)
	Sets a user defined cursor.
QgsPointXY	toMapCoordinates (QPoint point)
	Transforms a point from screen coordinates to map coordinates.
QString	toolName ()
	Emit map tool changed with the old tool.
virtual void	wheelEvent (QWheelEvent *e)
	Mouse wheel event for overriding. Default implementation does nothing.

Protected Member Functions
bool	checkGeometryType () const
	Check if CaptureMode matches layer type.
void	setCheckGeometryType (bool checkGeometryType)
	Check if CaptureMode matches layer type.
Protected Member Functions inherited from QgsMapToolCapture
int	addVertex (const QgsPointXY &mapPoint, const QgsPointLocator::Match &match)
	Variant to supply more information in the case of snapping.
int	addVertex (const QgsPointXY &point)
	Adds a point to the rubber band (in map coordinates) and to the capture list (in layer coordinates)
void	closePolygon ()
	Close an open polygon.
int	fetchLayerPoint (const QgsPointLocator::Match &match, QgsPoint &layerPoint)
	Fetches the original point from the source layer if it has the same CRS as the current layer.
bool	isCapturing () const
	Are we currently capturing?
int	nextPoint (const QgsPoint &mapPoint, QgsPoint &layerPoint)
	Converts a map point to layer coordinates.
int	nextPoint (QPoint p, QgsPoint &layerPoint, QgsPoint &mapPoint)
	Converts a point to map coordinates and layer coordinates.
Q_DECL_DEPRECATED QVector< QgsPointXY >	points () const
	List of digitized points.
QgsPointSequence	pointsZM () const
	List of digitized points.
void	setPoints (const QgsPointSequence &pointList)
	Set the points on which to work.
Q_DECL_DEPRECATED void	setPoints (const QVector< QgsPointXY > &pointList)
	Set the points on which to work.
int	size ()
	Number of points digitized.
void	startCapturing ()
	Start capturing.
void	undo (bool isAutoRepeat=false)
	Removes the last vertex from mRubberBand and mCaptureList.
Protected Member Functions inherited from QgsMapToolAdvancedDigitizing
void	setAdvancedDigitizingAllowed (bool allowed)
	Sets whether functionality of advanced digitizing dock widget is currently allowed.
void	setAutoSnapEnabled (bool enabled)
	Sets whether mouse events (press/move/release) should automatically try to snap mouse position This method is protected because it should be a decision of the map tool and not from elsewhere.
Protected Member Functions inherited from QgsMapToolEdit
TopologicalResult	addTopologicalPoints (const QVector< QgsPoint > &vertices)
	Adds a list of vertices to other features to keep topology up to date, e.g.
Q_DECL_DEPRECATED TopologicalResult	addTopologicalPoints (const QVector< QgsPointXY > &vertices)
	Adds a list of vertices to other features to keep topology up to date, e.g.
QgsRubberBand *	createRubberBand (Qgis::GeometryType geometryType=Qgis::GeometryType::Line, bool alternativeBand=false)
	Creates a rubber band with the color/line width from the QGIS settings.
QgsVectorLayer *	currentVectorLayer ()
	Returns the current vector layer of the map canvas or 0.
void	notifyNotEditableLayer ()
	Display a timed message bar noting the active vector layer is not editable.
void	notifyNotVectorLayer ()
	Display a timed message bar noting the active layer is not vector.
Protected Member Functions inherited from QgsMapTool
	QgsMapTool (QgsMapCanvas *canvas)
	Constructor takes a map canvas as a parameter.
QgsMapLayer *	layer (const QString &id)
	Returns the map layer with the matching ID, or nullptr if no layers could be found.
void	setToolName (const QString &name)
	Sets the tool's name.
QPoint	toCanvasCoordinates (const QgsPointXY &point) const
	Transforms a point from map coordinates to screen coordinates.
QgsPoint	toLayerCoordinates (const QgsMapLayer *layer, const QgsPoint &point)
	Transforms a point from map coordinates to layer coordinates.
QgsPointXY	toLayerCoordinates (const QgsMapLayer *layer, const QgsPointXY &point)
	Transforms a point from map coordinates to layer coordinates.
QgsRectangle	toLayerCoordinates (const QgsMapLayer *layer, const QgsRectangle &rect)
	Transforms a rect from map coordinates to layer coordinates.
QgsPointXY	toLayerCoordinates (const QgsMapLayer *layer, QPoint point)
	Transforms a point from screen coordinates to layer coordinates.
QgsPoint	toMapCoordinates (const QgsMapLayer *layer, const QgsPoint &point)
	Transforms a point from layer coordinates to map coordinates (which is different in case reprojection is used).
QgsPointXY	toMapCoordinates (const QgsMapLayer *layer, const QgsPointXY &point)
	Transforms a point from layer coordinates to map coordinates (which is different in case reprojection is used).

Friends
class	TestQgsRelationReferenceWidget

Additional Inherited Members
Public Types inherited from QgsMapToolCapture
typedef QFlags< Capability >	Capabilities
enum	Capability { NoCapabilities = 1 << 0 , SupportsCurves = 1 << 1 , ValidateGeometries = 1 << 2 }
	Specific capabilities of the tool. More...
enum	CaptureMode { CaptureNone , CapturePoint , CaptureLine , CapturePolygon }
	Different capture modes. More...
Public Types inherited from QgsMapTool
enum	Flag { Transient = 1 << 1 , EditTool = 1 << 2 , AllowZoomRect = 1 << 3 , ShowContextMenu = 1 << 4 }
	Enumeration of flags that adjust the way the map tool operates. More...
typedef QFlags< Flag >	Flags
Public Slots inherited from QgsMapToolCapture
Q_DECL_DEPRECATED void	setCircularDigitizingEnabled (bool enable)
	Enable the digitizing with curve.
Q_DECL_DEPRECATED void	setStreamDigitizingEnabled (bool enable)
	Toggles the stream digitizing mode.
Static Public Member Functions inherited from QgsMapToolEdit
static double	defaultMValue ()
	Returns default M value.
static double	defaultZValue ()
	Returns default Z value.
Static Public Member Functions inherited from QgsMapTool
static double	searchRadiusMM ()
	Gets search radius in mm.
static double	searchRadiusMU (const QgsRenderContext &context)
	Gets search radius in map units for given context.
static double	searchRadiusMU (QgsMapCanvas *canvas)
	Gets search radius in map units for given canvas.
Protected Types inherited from QgsMapToolEdit
enum	TopologicalResult { Success = 0 , InvalidCanvas = 1 , InvalidLayer = 2 }
	Result of addTopologicalPoints. More...
Protected Slots inherited from QgsMapToolCapture
void	stopCapturing ()
	Stop capturing.
Static Protected Member Functions inherited from QgsMapToolEdit
static QColor	digitizingFillColor ()
	Returns fill color for rubber bands (from global settings)
static QColor	digitizingStrokeColor ()
	Returns stroke color for rubber bands (from global settings)
static int	digitizingStrokeWidth ()
	Returns stroke width for rubber bands (from global settings)
Protected Attributes inherited from QgsMapToolAdvancedDigitizing
QgsAdvancedDigitizingDockWidget *	mCadDockWidget = nullptr
Protected Attributes inherited from QgsMapTool
QAction *	mAction = nullptr
	Optional pointer to an action that will be checked on map tool activation and unchecked on map tool deactivation.
QAbstractButton *	mButton = nullptr
	Optional pointer to a button that will be checked on map tool activation and unchecked on map tool deactivation.
QPointer< QgsMapCanvas >	mCanvas
	The pointer to the map canvas.
QCursor	mCursor
	The cursor used in the map tool.
QString	mToolName
	The translated name of the map tool.

Detailed Description

This tool digitizes geometry of new point/line/polygon features on already existing vector layers Once the map tool is enabled, user can digitize the feature geometry.

A signal will then be emitted.

Since

QGIS 3.10

Definition at line 31 of file qgsmaptooldigitizefeature.h.

Constructor & Destructor Documentation

QgsMapToolDigitizeFeature()

QgsMapToolDigitizeFeature::QgsMapToolDigitizeFeature	(	QgsMapCanvas *	canvas,
		QgsAdvancedDigitizingDockWidget *	cadDockWidget,
		CaptureMode	mode = QgsMapToolCapture::CaptureNone
	)

QgsMapToolDigitizeFeature is a map tool to digitize a feature geometry.

Parameters

canvas	the map canvas
cadDockWidget	widget to setup advanced digitizing parameters
mode	type of geometry to capture (point/line/polygon), QgsMapToolCapture::CaptureNone to autodetect geometry

Definition at line 31 of file qgsmaptooldigitizefeature.cpp.

Member Function Documentation

activate()

void QgsMapToolDigitizeFeature::activate ( )

overridevirtual

Registers this maptool with the cad dock widget.

Reimplemented from QgsMapToolCapture.

Definition at line 101 of file qgsmaptooldigitizefeature.cpp.

cadCanvasReleaseEvent()

void QgsMapToolDigitizeFeature::cadCanvasReleaseEvent ( QgsMapMouseEvent *  e )

overridevirtual

Override this method when subclassing this class.

This will receive adapted events from the cad system whenever a canvasReleaseEvent is triggered and it's not hidden by the cad's construction mode.

Parameters

e	Mouse events prepared by the cad system

Reimplemented from QgsMapToolCapture.

Definition at line 153 of file qgsmaptooldigitizefeature.cpp.

capabilities()

QgsMapToolCapture::Capabilities QgsMapToolDigitizeFeature::capabilities ( ) const

overridevirtual

Returns flags containing the supported capabilities.

Reimplemented from QgsMapToolCapture.

Definition at line 40 of file qgsmaptooldigitizefeature.cpp.

checkGeometryType()

bool QgsMapToolDigitizeFeature::checkGeometryType ( ) const

protected

Check if CaptureMode matches layer type.

Default is true.

Definition at line 143 of file qgsmaptooldigitizefeature.cpp.

deactivate()

void QgsMapToolDigitizeFeature::deactivate ( )

overridevirtual

Unregisters this maptool from the cad dock widget.

Reimplemented from QgsMapToolCapture.

Definition at line 124 of file qgsmaptooldigitizefeature.cpp.

digitizingCanceled

void QgsMapToolDigitizeFeature::digitizingCanceled ( )

signal

Emitted when the digitizing process was interrupted by the user.

Since

QGIS 3.28

digitizingCompleted

void QgsMapToolDigitizeFeature::digitizingCompleted ( const QgsFeature &  feature )

signal

Emitted whenever the digitizing has been successfully completed.

Parameters

feature

the new digitized feature

digitizingFinished

void QgsMapToolDigitizeFeature::digitizingFinished ( )

signal

Emitted whenever the digitizing has been ended without digitizing any feature.

keyPressEvent()

void QgsMapToolDigitizeFeature::keyPressEvent ( QKeyEvent *  e )

overridevirtual

Intercept key events like Esc or Del to delete the last point.

Parameters

e

key event

Reimplemented from QgsMapToolCapture.

Definition at line 134 of file qgsmaptooldigitizefeature.cpp.

setCheckGeometryType()

void QgsMapToolDigitizeFeature::setCheckGeometryType ( bool  checkGeometryType )

protected

Check if CaptureMode matches layer type.

Default is true.

Definition at line 148 of file qgsmaptooldigitizefeature.cpp.

setLayer()

void QgsMapToolDigitizeFeature::setLayer

(

QgsMapLayer *

vl

)

Change the layer edited by the map tool.

Parameters

vl	the layer to be edited by the map tool

Definition at line 205 of file qgsmaptooldigitizefeature.cpp.

supportsTechnique()

bool QgsMapToolDigitizeFeature::supportsTechnique ( Qgis::CaptureTechnique  technique ) const

overridevirtual

Returns true if the tool supports the specified capture technique.

Since

QGIS 3.20

Reimplemented from QgsMapToolCapture.

Definition at line 45 of file qgsmaptooldigitizefeature.cpp.

Friends And Related Symbol Documentation

TestQgsRelationReferenceWidget

friend class TestQgsRelationReferenceWidget

friend

Definition at line 124 of file qgsmaptooldigitizefeature.h.

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

• /home/fischer/src/qgis-3.38/src/gui/qgsmaptooldigitizefeature.h
• /home/fischer/src/qgis-3.38/src/gui/qgsmaptooldigitizefeature.cpp