QgsMapToolCaptureLayerGeometry Class Reference

Base class for map tools digitizing layer geometries. More...

#include <qgsmaptoolcapturelayergeometry.h>

Inheritance diagram for QgsMapToolCaptureLayerGeometry:

Public Member Functions
	QgsMapToolCaptureLayerGeometry (QgsMapCanvas *canvas, QgsAdvancedDigitizingDockWidget *cadDockWidget, CaptureMode mode)
	Constructor.
void	geometryCaptured (const QgsGeometry &geometry) override
	Called when the geometry is captured.
virtual void	layerGeometryCaptured (const QgsGeometry &geometry)
	Called when the geometry is captured.
virtual void	layerLineCaptured (const QgsCurve *line)
	Called when a line is captured.
virtual void	layerPointCaptured (const QgsPoint &point)
	Called when a point is captured.
virtual void	layerPolygonCaptured (const QgsCurvePolygon *polygon)
	Called when a polygon is captured.
Public Member Functions inherited from QgsMapToolCapture
	QgsMapToolCapture (QgsMapCanvas *canvas, QgsAdvancedDigitizingDockWidget *cadDockWidget, CaptureMode mode)
	constructor
	~QgsMapToolCapture () override
void	activate () override
	Registers this maptool with the cad dock widget.
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.
void	cadCanvasReleaseEvent (QgsMapMouseEvent *e) override
	Override this method when subclassing this class.
virtual QgsMapToolCapture::Capabilities	capabilities () const
	Returns flags containing the supported capabilities.
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	deactivate () override
	Unregisters this maptool from the cad dock widget.
void	deleteTempRubberBand ()
	Clean a temporary rubberband.
void	keyPressEvent (QKeyEvent *e) override
	Intercept key events like Esc or Del to delete the last point.
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.
virtual bool	supportsTechnique (Qgis::CaptureTechnique technique) const
	Returns true if the tool supports the specified capture technique.
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.
	~QgsMapToolAdvancedDigitizing () override
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.
bool	useSnappingIndicator () const
	Returns whether the snapping indicator should automatically be used.
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.

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.
Signals inherited from QgsMapTool
void	activated ()
	Emitted when the map tool is activated.
void	deactivated ()
	Emitted when the map tool is deactivated.
void	messageDiscarded ()
	Emitted when the previous message from the tool should be cleared from the application message bar.
void	messageEmitted (const QString &message, Qgis::MessageLevel level=Qgis::MessageLevel::Info)
	Emitted when a message should be shown to the user in the application message bar.
void	reactivated ()
	Emitted when the map tool is activated, while it is already active.
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.
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?
virtual void	lineCaptured (const QgsCurve *line)
	Called when a line is captured.
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.
virtual void	pointCaptured (const QgsPoint &point)
	Called when a point is captured.
Q_DECL_DEPRECATED QVector< QgsPointXY >	points () const
	List of digitized points.
QgsPointSequence	pointsZM () const
	List of digitized points.
virtual void	polygonCaptured (const QgsCurvePolygon *polygon)
	Called when a polygon is captured.
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.
void	setUseSnappingIndicator (bool enabled)
	Sets whether a snapping indicator should automatically be used.
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).
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

Base class for map tools digitizing layer geometries.

This map tool subclass automatically handles intersection avoidance with other layers in the active project whenever a geometry is digitized by the user.

Since

QGIS 3.26

Definition at line 31 of file qgsmaptoolcapturelayergeometry.h.

Constructor & Destructor Documentation

QgsMapToolCaptureLayerGeometry()

QgsMapToolCaptureLayerGeometry::QgsMapToolCaptureLayerGeometry ( QgsMapCanvas *  canvas, QgsAdvancedDigitizingDockWidget *  cadDockWidget, CaptureMode  mode  )

inline

Constructor.

Definition at line 36 of file qgsmaptoolcapturelayergeometry.h.

Member Function Documentation

geometryCaptured()

void QgsMapToolCaptureLayerGeometry::geometryCaptured ( const QgsGeometry &  geometry )

overridevirtual

Called when the geometry is captured.

A more specific handler is also called afterwards (pointCaptured(), lineCaptured() or polygonCaptured()).

Since

QGIS 3.26

Reimplemented from QgsMapToolCapture.

Definition at line 24 of file qgsmaptoolcapturelayergeometry.cpp.

layerGeometryCaptured()

virtual void QgsMapToolCaptureLayerGeometry::layerGeometryCaptured ( const QgsGeometry &  geometry )

inlinevirtual

Called when the geometry is captured.

A more specific handler is also called afterwards (layerPointCaptured(), layerLineCaptured() or layerPolygonCaptured()).

Reimplemented in QgsMapToolDigitizeFeature.

Definition at line 45 of file qgsmaptoolcapturelayergeometry.h.

layerLineCaptured()

virtual void QgsMapToolCaptureLayerGeometry::layerLineCaptured ( const QgsCurve *  line )

inlinevirtual

Called when a line is captured.

The generic layerGeometryCaptured() method will be called immediately before this line-specific method.

Definition at line 59 of file qgsmaptoolcapturelayergeometry.h.

layerPointCaptured()

virtual void QgsMapToolCaptureLayerGeometry::layerPointCaptured ( const QgsPoint &  point )

inlinevirtual

Called when a point is captured.

The generic layerGeometryCaptured() method will be called immediately before this point-specific method.

Definition at line 52 of file qgsmaptoolcapturelayergeometry.h.

layerPolygonCaptured()

virtual void QgsMapToolCaptureLayerGeometry::layerPolygonCaptured ( const QgsCurvePolygon *  polygon )

inlinevirtual

Called when a polygon is captured.

The generic layerGeometryCaptured() method will be called immediately before this polygon-specific method.

Definition at line 66 of file qgsmaptoolcapturelayergeometry.h.

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

• /build/qgis-3.99.0+git20250718+f78f5286a64+99sid/src/gui/maptools/qgsmaptoolcapturelayergeometry.h
• /build/qgis-3.99.0+git20250718+f78f5286a64+99sid/src/gui/maptools/qgsmaptoolcapturelayergeometry.cpp