QgsPlotRubberBand Class Reference

An abstract base class for temporary rubber band items in various shapes, for use within QgsPlotCanvas widgets. More...

#include <qgsplotrubberband.h>

Inheritance diagram for QgsPlotRubberBand:

Public Member Functions
	QgsPlotRubberBand (QgsPlotCanvas *canvas=nullptr)
	Constructor for QgsPlotRubberBand.
	~QgsPlotRubberBand () override=default
QBrush	brush () const
	Returns the brush used for drawing the rubber band.
QgsPlotCanvas *	canvas () const
	Returns the canvas associated with the rubber band.
virtual QRectF	finish (QPointF position=QPointF(), Qt::KeyboardModifiers modifiers=Qt::KeyboardModifiers())=0
	Called when a rubber band use has finished and the rubber band is no longer required.
QPen	pen () const
	Returns the pen used for drawing the rubber band.
void	setBrush (const QBrush &brush)
	Sets the brush used for drawing the rubber band.
void	setPen (const QPen &pen)
	Sets the pen used for drawing the rubber band.
virtual void	start (QPointF position, Qt::KeyboardModifiers modifiers)=0
	Called when a rubber band should be created at the specified starting position (in canvas coordinate space).
virtual void	update (QPointF position, Qt::KeyboardModifiers modifiers)=0
	Called when a rubber band should be updated to reflect a temporary ending position (in canvas coordinate space).

Protected Member Functions
QRectF	updateRect (QPointF start, QPointF position, bool constrainSquare, bool fromCenter)
	Calculates an updated bounding box rectangle from a original start position and new position.

Detailed Description

An abstract base class for temporary rubber band items in various shapes, for use within QgsPlotCanvas widgets.

Since

QGIS 3.26

Definition at line 38 of file qgsplotrubberband.h.

Constructor & Destructor Documentation

QgsPlotRubberBand()

QgsPlotRubberBand::QgsPlotRubberBand

(

QgsPlotCanvas *

canvas = nullptr

)

Constructor for QgsPlotRubberBand.

Definition at line 29 of file qgsplotrubberband.cpp.

~QgsPlotRubberBand()

QgsPlotRubberBand::~QgsPlotRubberBand ( )

overridedefault

Member Function Documentation

brush()

QBrush QgsPlotRubberBand::brush

(

)

const

Returns the brush used for drawing the rubber band.

See also

setBrush()

pen()

Definition at line 112 of file qgsplotrubberband.cpp.

canvas()

QgsPlotCanvas * QgsPlotRubberBand::canvas

(

)

const

Returns the canvas associated with the rubber band.

Definition at line 34 of file qgsplotrubberband.cpp.

finish()

virtual QRectF QgsPlotRubberBand::finish ( QPointF position = QPointF(), Qt::KeyboardModifiers modifiers = Qt::KeyboardModifiers() )

pure virtual

Called when a rubber band use has finished and the rubber band is no longer required.

Returns the final bounding box of the rubber band.

Implemented in QgsPlotRectangularRubberBand.

pen()

QPen QgsPlotRubberBand::pen

(

)

const

Returns the pen used for drawing the rubber band.

See also

setPen()

brush()

Definition at line 102 of file qgsplotrubberband.cpp.

setBrush()

void QgsPlotRubberBand::setBrush

(

const QBrush &

brush

)

Sets the brush used for drawing the rubber band.

See also

brush()

setPen()

Definition at line 117 of file qgsplotrubberband.cpp.

setPen()

void QgsPlotRubberBand::setPen

(

const QPen &

pen

)

Sets the pen used for drawing the rubber band.

See also

pen()

setBrush()

Definition at line 107 of file qgsplotrubberband.cpp.

start()

virtual void QgsPlotRubberBand::start ( QPointF position, Qt::KeyboardModifiers modifiers )

pure virtual

Called when a rubber band should be created at the specified starting position (in canvas coordinate space).

Implemented in QgsPlotRectangularRubberBand.

update()

virtual void QgsPlotRubberBand::update ( QPointF position, Qt::KeyboardModifiers modifiers )

pure virtual

Called when a rubber band should be updated to reflect a temporary ending position (in canvas coordinate space).

Implemented in QgsPlotRectangularRubberBand.

updateRect()

QRectF QgsPlotRubberBand::updateRect ( QPointF start, QPointF position, bool constrainSquare, bool fromCenter )

protected

Calculates an updated bounding box rectangle from a original start position and new position.

If constrainSquare is true then the bounding box will be forced to a square shape. If fromCenter is true then the original start position will form the center point of the returned rectangle.

Definition at line 39 of file qgsplotrubberband.cpp.

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

• /build/qgis-3.99.0+git20251210+2fe06baccd8+99sid/src/gui/plot/qgsplotrubberband.h
• /build/qgis-3.99.0+git20251210+2fe06baccd8+99sid/src/gui/plot/qgsplotrubberband.cpp