Biomedical Image Analysis Library
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Public Member Functions | Public Attributes | Protected Types | Protected Member Functions | Protected Attributes | List of all members
QCPItemEllipse Class Reference

An ellipse. More...

#include <qcustomplot.h>

Inheritance diagram for QCPItemEllipse:
Inheritance graph
Collaboration diagram for QCPItemEllipse:
Collaboration graph

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.

QCPItemEllipse.png
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 QCPItemEllipse::AnchorIndex
protected
Enumerator
aiTopLeftRim 
aiTop 
aiTopRightRim 
aiRight 
aiBottomRightRim 
aiBottom 
aiBottomLeftRim 
aiLeft 
aiCenter 

Definition at line 3554 of file qcustomplot.h.

Constructor & Destructor Documentation

QCPItemEllipse::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 22530 of file qcustomplot.cpp.

QCPItemEllipse::~QCPItemEllipse ( )
virtual

Definition at line 22553 of file qcustomplot.cpp.

Member Function Documentation

QPointF QCPItemEllipse::anchorPixelPoint ( int  anchorId) const
protectedvirtual

Reimplemented from QCPAbstractItem.

Definition at line 22656 of file qcustomplot.cpp.

QBrush QCPItemEllipse::brush ( ) const
inline

Definition at line 3529 of file qcustomplot.h.

void QCPItemEllipse::draw ( QCPPainter *  painter)
protectedvirtual

Implements QCPAbstractItem.

Definition at line 22628 of file qcustomplot.cpp.

QBrush QCPItemEllipse::mainBrush ( ) const
protected

Definition at line 22691 of file qcustomplot.cpp.

QPen QCPItemEllipse::mainPen ( ) const
protected

Definition at line 22681 of file qcustomplot.cpp.

QPen QCPItemEllipse::pen ( ) const
inline

Definition at line 3527 of file qcustomplot.h.

QBrush QCPItemEllipse::selectedBrush ( ) const
inline

Definition at line 3530 of file qcustomplot.h.

QPen QCPItemEllipse::selectedPen ( ) const
inline

Definition at line 3528 of file qcustomplot.h.

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.

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

See also
selectEvent, deselectEvent, QCustomPlot::setInteractions

Implements QCPAbstractItem.

Definition at line 22600 of file qcustomplot.cpp.

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

Definition at line 22583 of file qcustomplot.cpp.

void QCPItemEllipse::setPen ( const QPen &  pen)

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

See also
setSelectedPen, setBrush

Definition at line 22562 of file qcustomplot.cpp.

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

Definition at line 22594 of file qcustomplot.cpp.

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

Definition at line 22572 of file qcustomplot.cpp.

Member Data Documentation

QCPItemAnchor* const QCPItemEllipse::bottom

Definition at line 3548 of file qcustomplot.h.

QCPItemAnchor* const QCPItemEllipse::bottomLeftRim

Definition at line 3549 of file qcustomplot.h.

QCPItemPosition* const QCPItemEllipse::bottomRight

Definition at line 3542 of file qcustomplot.h.

QCPItemAnchor* const QCPItemEllipse::bottomRightRim

Definition at line 3547 of file qcustomplot.h.

QCPItemAnchor* const QCPItemEllipse::center

Definition at line 3551 of file qcustomplot.h.

QCPItemAnchor* const QCPItemEllipse::left

Definition at line 3550 of file qcustomplot.h.

QBrush QCPItemEllipse::mBrush
protected

Definition at line 3558 of file qcustomplot.h.

QPen QCPItemEllipse::mPen
protected

Definition at line 3557 of file qcustomplot.h.

QBrush QCPItemEllipse::mSelectedBrush
protected

Definition at line 3558 of file qcustomplot.h.

QPen QCPItemEllipse::mSelectedPen
protected

Definition at line 3557 of file qcustomplot.h.

QCPItemAnchor* const QCPItemEllipse::right

Definition at line 3546 of file qcustomplot.h.

QCPItemAnchor* const QCPItemEllipse::top

Definition at line 3544 of file qcustomplot.h.

QCPItemPosition* const QCPItemEllipse::topLeft

Definition at line 3541 of file qcustomplot.h.

QCPItemAnchor* const QCPItemEllipse::topLeftRim

Definition at line 3543 of file qcustomplot.h.

QCPItemAnchor* const QCPItemEllipse::topRightRim

Definition at line 3545 of file qcustomplot.h.

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