#include <qcustomplot.h>

Inheritance diagram for QCPItemEllipse:

Collaboration diagram for QCPItemEllipse:

Public Member Functions
	QCPItemEllipse (QCustomPlot *parentPlot)

virtual	~QCPItemEllipse ()

QPen	pen () const

QPen	selectedPen () const

QBrush	brush () const

QBrush	selectedBrush () const

void	setPen (const QPen &pen)

void	setSelectedPen (const QPen &pen)

void	setBrush (const QBrush &brush)

void	setSelectedBrush (const QBrush &brush)

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

Public Member Functions inherited from QCPAbstractItem
	QCPAbstractItem (QCustomPlot *parentPlot)

virtual	~QCPAbstractItem ()

bool	clipToAxisRect () const

QCPAxisRect *	clipAxisRect () const

bool	selectable () const

bool	selected () const

void	setClipToAxisRect (bool clip)

void	setClipAxisRect (QCPAxisRect *rect)

Q_SLOT void	setSelectable (bool selectable)

Q_SLOT void	setSelected (bool selected)

QList< QCPItemPosition * >	positions () const

QList< QCPItemAnchor * >	anchors () const

QCPItemPosition *	position (const QString &name) const

QCPItemAnchor *	anchor (const QString &name) const

bool	hasAnchor (const QString &name) const

Public Member Functions inherited from QCPLayerable
	QCPLayerable (QCustomPlot plot, QString targetLayer=QString(), QCPLayerable parentLayerable=0)

	~QCPLayerable ()

bool	visible () const

QCustomPlot *	parentPlot () const

QCPLayerable *	parentLayerable () const

QCPLayer *	layer () const

bool	antialiased () const

void	setVisible (bool on)

Q_SLOT bool	setLayer (QCPLayer *layer)

bool	setLayer (const QString &layerName)

void	setAntialiased (bool enabled)

bool	realVisibility () const

Public Attributes
QCPItemPosition *const	topLeft

QCPItemPosition *const	bottomRight

QCPItemAnchor *const	topLeftRim

QCPItemAnchor *const	top

QCPItemAnchor *const	topRightRim

QCPItemAnchor *const	right

QCPItemAnchor *const	bottomRightRim

QCPItemAnchor *const	bottom

QCPItemAnchor *const	bottomLeftRim

QCPItemAnchor *const	left

QCPItemAnchor *const	center

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

Protected Member Functions
virtual void	draw (QCPPainter *painter)

virtual QPointF	anchorPixelPoint (int anchorId) const

QPen	mainPen () const

QBrush	mainBrush () const

Protected Member Functions inherited from QCPAbstractItem
virtual QCP::Interaction	selectionCategory () const

virtual QRect	clipRect () const

virtual void	applyDefaultAntialiasingHint (QCPPainter *painter) const

virtual void	selectEvent (QMouseEvent event, bool additive, const QVariant &details, bool selectionStateChanged)

virtual void	deselectEvent (bool *selectionStateChanged)

double	distSqrToLine (const QPointF &start, const QPointF &end, const QPointF &point) const

double	rectSelectTest (const QRectF &rect, const QPointF &pos, bool filledRect) const

QCPItemPosition *	createPosition (const QString &name)

QCPItemAnchor *	createAnchor (const QString &name, int anchorId)

Protected Member Functions inherited from QCPLayerable
virtual void	parentPlotInitialized (QCustomPlot *parentPlot)

void	initializeParentPlot (QCustomPlot *parentPlot)

void	setParentLayerable (QCPLayerable *parentLayerable)

bool	moveToLayer (QCPLayer *layer, bool prepend)

void	applyAntialiasingHint (QCPPainter *painter, bool localAntialiased, QCP::AntialiasedElement overrideElement) const

Protected Attributes
QPen	mPen

QPen	mSelectedPen

QBrush	mBrush

QBrush	mSelectedBrush

Protected Attributes inherited from QCPAbstractItem
bool	mClipToAxisRect

QPointer< QCPAxisRect >	mClipAxisRect

QList< QCPItemPosition * >	mPositions

QList< QCPItemAnchor * >	mAnchors

bool	mSelectable

bool	mSelected

Protected Attributes inherited from QCPLayerable
bool	mVisible

QCustomPlot *	mParentPlot

QPointer< QCPLayerable >	mParentLayerable

QCPLayer *	mLayer

bool	mAntialiased

Additional Inherited Members
Signals inherited from QCPAbstractItem
void	selectionChanged (bool selected)

void	selectableChanged (bool selectable)

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.

Definition at line 3513 of file qcustomplot.h.

Member Enumeration Documentation

enum AnchorIndex

protected

Enumerator
aiTopLeftRim
aiTop
aiTopRightRim
aiRight
aiBottomRightRim
aiBottom
aiBottomLeftRim
aiLeft
aiCenter

Definition at line 3554 of file qcustomplot.h.

Constructor & Destructor Documentation

QCPItemEllipse ( QCustomPlot * parentPlot )

Creates an ellipse item and sets default values.

The constructed item can be added to the plot with QCustomPlot::addItem.

Definition at line 22542 of file qcustomplot.cpp.

References bottomRight, setBrush(), QCPItemPosition::setCoords(), setPen(), setSelectedBrush(), setSelectedPen(), and topLeft.

~QCPItemEllipse ( )

virtual

Definition at line 22565 of file qcustomplot.cpp.

Member Function Documentation

QPointF anchorPixelPoint ( int anchorId ) const

protectedvirtual

Reimplemented from QCPAbstractItem.

Definition at line 22668 of file qcustomplot.cpp.

References aiBottom, aiBottomLeftRim, aiBottomRightRim, aiCenter, aiLeft, aiRight, aiTop, aiTopLeftRim, aiTopRightRim, bottomRight, QCPItemPosition::pixelPoint(), and topLeft.

QBrush brush ( ) const

inline

Definition at line 3529 of file qcustomplot.h.

Referenced by setBrush(), and setSelectedBrush().

void draw ( QCPPainter * painter )

protectedvirtual

Implements QCPAbstractItem.

Definition at line 22640 of file qcustomplot.cpp.

References bottomRight, QCPAbstractItem::clipRect(), mainBrush(), mainPen(), QCPItemPosition::pixelPoint(), QCPPainter::setPen(), QCPLayerable::setVisible(), and topLeft.

QBrush mainBrush ( ) const

protected

Definition at line 22703 of file qcustomplot.cpp.

References mBrush, QCPAbstractItem::mSelected, and mSelectedBrush.

Referenced by draw().

QPen mainPen ( ) const

protected

Definition at line 22693 of file qcustomplot.cpp.

References mPen, QCPAbstractItem::mSelected, and mSelectedPen.

Referenced by draw().

QPen pen ( ) const

inline

Definition at line 3527 of file qcustomplot.h.

Referenced by setPen(), and setSelectedPen().

QBrush selectedBrush ( ) const

inline

Definition at line 3530 of file qcustomplot.h.

QPen selectedPen ( ) const

inline

Definition at line 3528 of file qcustomplot.h.

double 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.

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