QCPPolarLegendItem Class Reference
Author: Emanuel Eichhammer

· · · ·
Public Functions | Protected Functions
QCPPolarLegendItem Class Reference

A legend item for polar plots. More...

Inheritance diagram for QCPPolarLegendItem:

## Public Functions
| QCPPolarLegendItem (QCPLegend *parent, QCPPolarGraph *graph)
QCPPolarGraph * | polarGraph ()
Public Functions inherited from QCPAbstractLegendItem
| QCPAbstractLegendItem (QCPLegend *parent)
QCPLegend * | parentLegend () const
QFont | font () const
QColor | textColor () const
QFont | selectedFont () const
QColor | selectedTextColor () const
bool | selectable () const
bool | selected () const
void | setFont (const QFont &font)
void | setTextColor (const QColor &color)
void | setSelectedFont (const QFont &font)
void | setSelectedTextColor (const QColor &color)
Q_SLOT void | setSelectable (bool selectable)
Q_SLOT void | setSelected (bool selected)
virtual double | selectTest (const QPointF &pos, bool onlySelectable, QVariant *details=nullptr) const
Public Functions inherited from QCPLayoutElement
| QCPLayoutElement (QCustomPlot *parentPlot=nullptr)
QCPLayout * | layout () const
QRect | rect () const
QRect | outerRect () const
QMargins | margins () const
QMargins | minimumMargins () const
QCP::MarginSides | autoMargins () const
QSize | minimumSize () const
QSize | maximumSize () const
SizeConstraintRect | sizeConstraintRect () const
QCPMarginGroup * | marginGroup (QCP::MarginSide side) const
QHash< QCP::MarginSide, QCPMarginGroup * > | marginGroups () const
void | setOuterRect (const QRect &rect)
void | setMargins (const QMargins &margins)
void | setMinimumMargins (const QMargins &margins)
void | setAutoMargins (QCP::MarginSides sides)
void | setMinimumSize (const QSize &size)
void | setMinimumSize (int width, int height)
void | setMaximumSize (const QSize &size)
void | setMaximumSize (int width, int height)
void | setSizeConstraintRect (SizeConstraintRect constraintRect)
void | setMarginGroup (QCP::MarginSides sides, QCPMarginGroup *group)
virtual void | update (UpdatePhase phase)
virtual QSize | minimumOuterSizeHint () const
virtual QSize | maximumOuterSizeHint () const
virtual QList< QCPLayoutElement * > | elements (bool recursive) const
virtual double | selectTest (const QPointF &pos, bool onlySelectable, QVariant *details=nullptr) const
Public Functions inherited from QCPLayerable
| QCPLayerable (QCustomPlot *plot, QString targetLayer=QString(), QCPLayerable *parentLayerable=nullptr)
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)
virtual double | selectTest (const QPointF &pos, bool onlySelectable, QVariant *details=nullptr) const
bool | realVisibility () const

## Protected Functions
virtual void | draw (QCPPainter *painter)
virtual QSize | minimumOuterSizeHint () const
QPen | getIconBorderPen () const
QColor | getTextColor () const
QFont | getFont () const
Protected Functions inherited from QCPAbstractLegendItem
virtual QCP::Interaction | selectionCategory () const
virtual void | applyDefaultAntialiasingHint (QCPPainter *painter) const
virtual QRect | clipRect () const
virtual void | draw (QCPPainter *painter)=0
virtual void | selectEvent (QMouseEvent *event, bool additive, const QVariant &details, bool *selectionStateChanged)
virtual void | deselectEvent (bool *selectionStateChanged)
Protected Functions inherited from QCPLayoutElement
virtual int | calculateAutoMargin (QCP::MarginSide side)
virtual void | layoutChanged ()
virtual void | applyDefaultAntialiasingHint (QCPPainter *painter) const
virtual void | draw (QCPPainter *painter)
virtual void | parentPlotInitialized (QCustomPlot *parentPlot)
Protected Functions inherited from QCPLayerable
virtual void | parentPlotInitialized (QCustomPlot *parentPlot)
virtual QCP::Interaction | selectionCategory () const
virtual QRect | clipRect () const
virtual void | applyDefaultAntialiasingHint (QCPPainter *painter) const =0
virtual void | draw (QCPPainter *painter)=0
virtual void | selectEvent (QMouseEvent *event, bool additive, const QVariant &details, bool *selectionStateChanged)
virtual void | deselectEvent (bool *selectionStateChanged)
virtual void | mousePressEvent (QMouseEvent *event, const QVariant &details)
virtual void | mouseMoveEvent (QMouseEvent *event, const QPointF &startPos)
virtual void | mouseReleaseEvent (QMouseEvent *event, const QPointF &startPos)
virtual void | mouseDoubleClickEvent (QMouseEvent *event, const QVariant &details)
virtual void | wheelEvent (QWheelEvent *event)
void | initializeParentPlot (QCustomPlot *parentPlot)
void | setParentLayerable (QCPLayerable *parentLayerable)
bool | moveToLayer (QCPLayer *layer, bool prepend)
void | applyAntialiasingHint (QCPPainter *painter, bool localAntialiased, QCP::AntialiasedElement overrideElement) const

## Additional Inherited Members
Public Types inherited from QCPLayoutElement
enum | UpdatePhase
enum | SizeConstraintRect
Signals inherited from QCPAbstractLegendItem
void | selectionChanged (bool selected)
void | selectableChanged (bool selectable)
Signals inherited from QCPLayerable
void | layerChanged (QCPLayer *newLayer)

## Detailed Description

A legend item for polar plots.

Warning
  In this QCustomPlot version, polar plots are a tech preview. Expect documentation and functionality to be incomplete, as well as changing public interfaces in the future.

## Member Function Documentation

## ◆ draw()

void QCPPolarLegendItem::draw | ( | QCPPainter * | painter | ) |
| protectedvirtual

This function draws the layerable with the specified painter. It is only called by QCustomPlot, if the layerable is visible (setVisible).

Before this function is called, the painter's antialiasing state is set via applyDefaultAntialiasingHint, see the documentation there. Further, the clipping rectangle was set to clipRect.

Implements QCPAbstractLegendItem.

## ◆ minimumOuterSizeHint()

QSize QCPPolarLegendItem::minimumOuterSizeHint | ( |  | ) | const
| protectedvirtual

Returns the suggested minimum size this layout element (the outerRect) may be compressed to, if no manual minimum size is set.

if a minimum size (setMinimumSize) was not set manually, parent layouts use the returned size (usually indirectly through QCPLayout::getFinalMinimumOuterSize) to determine the minimum allowed size of this layout element.

A manual minimum size is considered set if it is non-zero.

The default implementation simply returns the sum of the horizontal margins for the width and the sum of the vertical margins for the height. Reimplementations may use their detailed knowledge about the layout element's content to provide size hints.

Reimplemented from QCPLayoutElement.

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

- src/polar/polargraph.h
- src/polar/polargraph.cpp