An ellipse. More...

Inheritance diagram for QCPItemEllipse:

Public Member Functions
QBrush	brush () const
QPen	pen () const
	QCPItemEllipse (QCustomPlot *parentPlot)
QBrush	selectedBrush () const
QPen	selectedPen () const
virtual double	selectTest (const QPointF &pos, bool onlySelectable, QVariant *details=0) const Q_DECL_OVERRIDE
void	setBrush (const QBrush &brush)
void	setPen (const QPen &pen)
void	setSelectedBrush (const QBrush &brush)
void	setSelectedPen (const QPen &pen)
Public Member Functions inherited from QCPAbstractItem
QCPItemAnchor *	anchor (const QString &name) const
QList< QCPItemAnchor * >	anchors () const
QCPAxisRect *	clipAxisRect () const
bool	clipToAxisRect () const
bool	hasAnchor (const QString &name) const
QCPItemPosition *	position (const QString &name) const
QList< QCPItemPosition * >	positions () const
	QCPAbstractItem (QCustomPlot *parentPlot)
bool	selectable () const
bool	selected () const
void	setClipAxisRect (QCPAxisRect *rect)
void	setClipToAxisRect (bool clip)
Q_SLOT void	setSelectable (bool selectable)
Q_SLOT void	setSelected (bool selected)
Public Member Functions inherited from QCPLayerable
bool	antialiased () const
QCPLayer *	layer () const
QCPLayerable *	parentLayerable () const
QCustomPlot *	parentPlot () const
	QCPLayerable (QCustomPlot plot, QString targetLayer=QString(), QCPLayerable parentLayerable=0)
bool	realVisibility () const
void	setAntialiased (bool enabled)
bool	setLayer (const QString &layerName)
Q_SLOT bool	setLayer (QCPLayer *layer)
void	setVisible (bool on)
bool	visible () const

Public Attributes
QCPItemAnchor *const	bottom
QCPItemAnchor *const	bottomLeftRim
QCPItemPosition *const	bottomRight
QCPItemAnchor *const	bottomRightRim
QCPItemAnchor *const	center
QCPItemAnchor *const	left
QCPItemAnchor *const	right
QCPItemAnchor *const	top
QCPItemPosition *const	topLeft
QCPItemAnchor *const	topLeftRim
QCPItemAnchor *const	topRightRim

Protected Types
enum	AnchorIndex { aiTopLeftRim , aiTop , aiTopRightRim , aiRight , aiBottomRightRim , aiBottom , aiBottomLeftRim , aiLeft , aiCenter }

Protected Member Functions
virtual QPointF	anchorPixelPosition (int anchorId) const Q_DECL_OVERRIDE
virtual void	draw (QCPPainter *painter) Q_DECL_OVERRIDE
QBrush	mainBrush () const
QPen	mainPen () const
Protected Member Functions inherited from QCPAbstractItem
virtual void	applyDefaultAntialiasingHint (QCPPainter *painter) const Q_DECL_OVERRIDE
virtual QRect	clipRect () const Q_DECL_OVERRIDE
QCPItemAnchor *	createAnchor (const QString &name, int anchorId)
QCPItemPosition *	createPosition (const QString &name)
virtual void	deselectEvent (bool *selectionStateChanged) Q_DECL_OVERRIDE
double	rectDistance (const QRectF &rect, const QPointF &pos, bool filledRect) const
virtual void	selectEvent (QMouseEvent event, bool additive, const QVariant &details, bool selectionStateChanged) Q_DECL_OVERRIDE
virtual QCP::Interaction	selectionCategory () const Q_DECL_OVERRIDE
Protected Member Functions inherited from QCPLayerable
void	applyAntialiasingHint (QCPPainter *painter, bool localAntialiased, QCP::AntialiasedElement overrideElement) const
void	initializeParentPlot (QCustomPlot *parentPlot)
virtual void	mouseDoubleClickEvent (QMouseEvent *event, const QVariant &details)
virtual void	mouseMoveEvent (QMouseEvent *event, const QPointF &startPos)
virtual void	mousePressEvent (QMouseEvent *event, const QVariant &details)
virtual void	mouseReleaseEvent (QMouseEvent *event, const QPointF &startPos)
bool	moveToLayer (QCPLayer *layer, bool prepend)
virtual void	parentPlotInitialized (QCustomPlot *parentPlot)
void	setParentLayerable (QCPLayerable *parentLayerable)
virtual void	wheelEvent (QWheelEvent *event)

Protected Attributes
QBrush	mBrush
QPen	mPen
QBrush	mSelectedBrush
QPen	mSelectedPen
Protected Attributes inherited from QCPAbstractItem
QList< QCPItemAnchor * >	mAnchors
QPointer< QCPAxisRect >	mClipAxisRect
bool	mClipToAxisRect
QList< QCPItemPosition * >	mPositions
bool	mSelectable
bool	mSelected
Protected Attributes inherited from QCPLayerable
bool	mAntialiased
QCPLayer *	mLayer
QPointer< QCPLayerable >	mParentLayerable
QCustomPlot *	mParentPlot
bool	mVisible

Additional Inherited Members
Signals inherited from QCPAbstractItem
void	selectableChanged (bool selectable)
void	selectionChanged (bool selected)
Signals inherited from QCPLayerable
void	layerChanged (QCPLayer *newLayer)

Detailed Description

An ellipse.

Ellipse example. Blue dotted circles are anchors, solid blue discs are positions.

It has two positions, topLeft and bottomRight, which define the rect the ellipse will be drawn in.

Constructor & Destructor Documentation

◆ QCPItemEllipse()

QCPItemEllipse::QCPItemEllipse ( QCustomPlot * parentPlot )

explicit

Creates an ellipse item and sets default values.

The created item is automatically registered with parentPlot. This QCustomPlot instance takes ownership of the item, so do not delete it manually but use QCustomPlot::removeItem() instead.

Member Function Documentation

◆ anchorPixelPosition()

QPointF QCPItemEllipse::anchorPixelPosition ( int anchorId ) const

protectedvirtual

Reimplemented from QCPAbstractItem.

◆ draw()

void QCPItemEllipse::draw ( QCPPainter * painter )

protectedvirtual

Implements QCPAbstractItem.

◆ selectTest()

double QCPItemEllipse::selectTest	(	const QPointF &	pos,
		bool	onlySelectable,
		QVariant *	details = 0 ) const

virtual

This function is used to decide whether a click hits a layerable object or not.

pos is a point in pixel coordinates on the QCustomPlot surface. This function returns the shortest pixel distance of this point to the object. If the object is either invisible or the distance couldn't be determined, -1.0 is returned. Further, if onlySelectable is true and the object is not selectable, -1.0 is returned, too.

If the object is represented not by single lines but by an area like a QCPItemText or the bars of a QCPBars plottable, a click inside the area should also be considered a hit. In these cases this function thus returns a constant value greater zero but still below the parent plot's selection tolerance. (typically the selectionTolerance multiplied by 0.99).

Providing a constant value for area objects allows selecting line objects even when they are obscured by such area objects, by clicking close to the lines (i.e. closer than 0.99*selectionTolerance).

The actual setting of the selection state is not done by this function. This is handled by the parent QCustomPlot when the mouseReleaseEvent occurs, and the finally selected object is notified via the selectEvent/ deselectEvent methods.

details is an optional output parameter. Every layerable subclass may place any information in details. This information will be passed to selectEvent when the parent QCustomPlot decides on the basis of this selectTest call, that the object was successfully selected. The subsequent call to selectEvent will carry the details. This is useful for multi-part objects (like QCPAxis). This way, a possibly complex calculation to decide which part was clicked is only done once in selectTest. The result (i.e. the actually clicked part) can then be placed in details. So in the subsequent selectEvent, the decision which part was selected doesn't have to be done a second time for a single selection operation.

In the case of 1D Plottables (QCPAbstractPlottable1D, like QCPGraph or QCPBars) details will be set to a QCPDataSelection, describing the closest data point to pos.

You may pass 0 as details to indicate that you are not interested in those selection details.

See also: selectEvent, deselectEvent, mousePressEvent, wheelEvent, QCustomPlot::setInteractions, QCPAbstractPlottable1D::selectTestRect

Implements QCPAbstractItem.

◆ setBrush()

void QCPItemEllipse::setBrush ( const QBrush & brush )

Sets the brush that will be used to fill the ellipse. To disable filling, set brush to Qt::NoBrush.

See also: setSelectedBrush, setPen

◆ setPen()

void QCPItemEllipse::setPen ( const QPen & pen )

Sets the pen that will be used to draw the line of the ellipse

See also: setSelectedPen, setBrush

◆ setSelectedBrush()

void QCPItemEllipse::setSelectedBrush ( const QBrush & brush )

Sets the brush that will be used to fill the ellipse when selected. To disable filling, set brush to Qt::NoBrush.

See also: setBrush

◆ setSelectedPen()

void QCPItemEllipse::setSelectedPen ( const QPen & pen )

Sets the pen that will be used to draw the line of the ellipse when selected

See also: setPen, setSelected

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

projects/gui/3rdparty/qcustomplot/qcustomplot.h
projects/gui/3rdparty/qcustomplot/qcustomplot.cpp

Public Member Functions

Public Attributes

Protected Types

Protected Member Functions

Protected Attributes

Additional Inherited Members