#include <qwt_polar_canvas.h>

Inheritance diagram for QwtPolarCanvas:

Classes
class	PrivateData

Public Types
enum	PaintAttribute { BackingStore = 0x01 }
	Paint attributes. More...

Public Member Functions
	QwtPolarCanvas (QwtPolarPlot *)
	Constructor.

virtual	~QwtPolarCanvas ()
	Destructor.

QwtPolarPlot *	plot ()
	Get the plot.

const QwtPolarPlot *	plot () const
	Get the plot (const version)

void	setPaintAttribute (PaintAttribute, bool on=true)
	Set a paint attribute.

bool	testPaintAttribute (PaintAttribute) const
	Test a paint attribute.

const QPixmap *	backingStore () const
	Get the backing store.

void	invalidateBackingStore ()
	Invalidate the backing store.

QwtPointPolar	invTransform (const QPoint &) const
	Inverse transform from widget coordinates to polar coordinates.

QPoint	transform (const QwtPointPolar &) const
	Transform from polar coordinates to widget coordinates.

Protected Member Functions
virtual void	paintEvent (QPaintEvent *) override
	Handle paint events.

virtual void	resizeEvent (QResizeEvent *) override
	Handle resize events.

Detailed Description

Canvas of a QwtPolarPlot.

Member Enumeration Documentation

◆ PaintAttribute

enum QwtPolarCanvas::PaintAttribute

Paint attributes.

Enumerator
BackingStore	Paint double buffered and reuse the content of the pixmap buffer for some spontaneous repaints that happen when a plot gets unhidden, deiconified or changes the focus.

Constructor & Destructor Documentation

◆ QwtPolarCanvas()

QwtPolarCanvas::QwtPolarCanvas ( QwtPolarPlot * plot )

explicit

Constructor.

◆ ~QwtPolarCanvas()

QwtPolarCanvas::~QwtPolarCanvas ( )

virtual

Destructor.

Destructor

.

Member Function Documentation

◆ backingStore()

const QPixmap * QwtPolarCanvas::backingStore ( ) const

Get the backing store.

Get the backing store pixmap.

◆ invalidateBackingStore()

void QwtPolarCanvas::invalidateBackingStore ( )

Invalidate the backing store.

Invalidate the internal backing store.

◆ invTransform()

QwtPointPolar QwtPolarCanvas::invTransform ( const QPoint & pos ) const

Inverse transform from widget coordinates to polar coordinates.

Translate a point from widget coordinates to polar coordinates.

◆ paintEvent()

void QwtPolarCanvas::paintEvent ( QPaintEvent * event )

overrideprotectedvirtual

Handle paint events.

Paint event.

Parameters

event Paint event

◆ plot() [1/2]

QwtPolarPlot * QwtPolarCanvas::plot ( )

Get the plot.

Get the parent plot widget.

◆ plot() [2/2]

const QwtPolarPlot * QwtPolarCanvas::plot ( ) const

Get the plot (const version)

Get the parent plot widget (const version)

◆ resizeEvent()

void QwtPolarCanvas::resizeEvent ( QResizeEvent * event )

overrideprotectedvirtual

Handle resize events.

Resize event.

Parameters

event Resize event

◆ setPaintAttribute()

void QwtPolarCanvas::setPaintAttribute	(	PaintAttribute	attribute,
		bool	on = `true`
	)

Set a paint attribute.

Change the paint attributes.

◆ testPaintAttribute()

bool QwtPolarCanvas::testPaintAttribute ( PaintAttribute attribute ) const

Test a paint attribute.

Test whether a paint attribute is enabled.

◆ transform()

QPoint QwtPolarCanvas::transform ( const QwtPointPolar & polarPos ) const

Transform from polar coordinates to widget coordinates.

Translate a point from polar coordinates to widget coordinates.

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

/home/runner/work/QWT/QWT/src/plot/qwt_polar_canvas.h
/home/runner/work/QWT/QWT/src/plot/qwt_polar_canvas.cpp

Classes

Public Types

Public Member Functions

Protected Member Functions