Public Types¶

enum PaintAttribute { BackingStore = 0x01 }
Paint attributes. typedef QFlags< PaintAttribute > PaintAttributes

Public Member Functions¶

QwtPolarCanvas (QwtPolarPlot *)
Constructor. virtual ~QwtPolarCanvas ()
Destructor. QwtPolarPlot * plot ()
const QwtPolarPlot * plot () const
void setPaintAttribute (PaintAttribute, bool on=true)
Changing the paint attributes. bool testPaintAttribute (PaintAttribute) const
const QPixmap * backingStore () const
void invalidateBackingStore ()
Invalidate the internal backing store. QwtPointPolar invTransform (const QPoint &) const
QPoint transform (const QwtPointPolar &) const

Protected Member Functions¶

virtual void paintEvent (QPaintEvent *) override
virtual void resizeEvent (QResizeEvent *) override

typedef QFlags<PaintAttribute > QwtPolarCanvas::PaintAttributes¶

An ORed combination of PaintAttribute values.

Definition at line 50 of file qwt_polar_canvas.h.

enum QwtPolarCanvas::PaintAttribute¶

Paint attributes. The default setting enables BackingStore

See also

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.

Definition at line 40 of file qwt_polar_canvas.h.

const QPixmap * QwtPolarCanvas::backingStore () const¶

Returns

Definition at line 170 of file qwt_polar_canvas.cpp.

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

Translate a point from widget into plot coordinates

Parameters

Returns

See also

Definition at line 267 of file qwt_polar_canvas.cpp.

void QwtPolarCanvas::paintEvent (QPaintEvent * event) [override], [protected], [virtual]¶

Paint event

Parameters

Definition at line 186 of file qwt_polar_canvas.cpp.

QwtPolarPlot * QwtPolarCanvas::plot ()¶

Returns

Definition at line 97 of file qwt_polar_canvas.cpp.

const QwtPolarPlot * QwtPolarCanvas::plot () const¶

Returns

Definition at line 103 of file qwt_polar_canvas.cpp.

void QwtPolarCanvas::resizeEvent (QResizeEvent * event) [override], [protected], [virtual]¶

Resize event

Parameters

Definition at line 251 of file qwt_polar_canvas.cpp.

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

Changing the paint attributes.

Parameters

The default setting enables BackingStore

See also

Definition at line 118 of file qwt_polar_canvas.cpp.

bool QwtPolarCanvas::testPaintAttribute (PaintAttribute attribute) const¶

Test whether a paint attribute is enabled

Parameters

Returns

See also

Definition at line 164 of file qwt_polar_canvas.cpp.

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

Translate a point from plot into widget coordinates

Parameters

Returns

See also

Definition at line 310 of file qwt_polar_canvas.cpp.