QwtPolarPanner provides panning of a polar plot canvas. More...

#include <qwt_polar_panner.h>

Inheritance diagram for QwtPolarPanner:

Public Slots
virtual void	movePlot (int dx, int dy)

Public Member Functions
	QwtPolarPanner (QwtPolarCanvas *)
	Create a plot panner for a polar plot canvas.

virtual	~QwtPolarPanner ()
	Destructor.

QwtPolarPlot *	plot ()

const QwtPolarPlot *	plot () const

QwtPolarCanvas *	canvas ()

const QwtPolarCanvas *	canvas () const

Public Member Functions inherited from QwtPanner
	QwtPanner (QWidget *parent)

virtual	~QwtPanner ()
	Destructor.

void	setEnabled (bool)
	En/disable the panner.

bool	isEnabled () const

void	setMouseButton (Qt::MouseButton, Qt::KeyboardModifiers=Qt::NoModifier)

void	getMouseButton (Qt::MouseButton &button, Qt::KeyboardModifiers &) const
	Get mouse button and modifiers used for panning.

void	setAbortKey (int key, Qt::KeyboardModifiers=Qt::NoModifier)

void	getAbortKey (int &key, Qt::KeyboardModifiers &) const
	Get the abort key and modifiers.

void	setCursor (const QCursor &)

const QCursor	cursor () const

void	setOrientations (Qt::Orientations)

Qt::Orientations	orientations () const
	Return the orientation, where panning is enabled.

bool	isOrientationEnabled (Qt::Orientation) const

virtual bool	eventFilter (QObject , QEvent ) override
	Event filter.

Protected Member Functions
virtual void	widgetMousePressEvent (QMouseEvent *) override

Protected Member Functions inherited from QwtPanner
virtual void	widgetMouseReleaseEvent (QMouseEvent *)

virtual void	widgetMouseMoveEvent (QMouseEvent *)

virtual void	widgetKeyPressEvent (QKeyEvent *)

virtual void	widgetKeyReleaseEvent (QKeyEvent *)

virtual void	paintEvent (QPaintEvent *) override
	Paint event.

virtual QBitmap	contentsMask () const
	Calculate a mask for the contents of the panned widget.

virtual QPixmap	grab () const

Additional Inherited Members
Signals inherited from QwtPanner
void	panned (int dx, int dy)

void	moved (int dx, int dy)

Detailed Description

QwtPolarPanner provides panning of a polar plot canvas.

QwtPolarPanner is a panner for a QwtPolarCanvas, that adjusts the visible area after dropping the canvas on its new position.

Together with QwtPolarMagnifier individual ways of navigating on a QwtPolarPlot widget can be implemented easily.

See also: QwtPolarMagnifier

Definition at line 30 of file qwt_polar_panner.h.

Constructor & Destructor Documentation

◆ QwtPolarPanner()

QwtPolarPanner::QwtPolarPanner ( QwtPolarCanvas * canvas )

explicit

Create a plot panner for a polar plot canvas.

Definition at line 16 of file qwt_polar_panner.cpp.

◆ ~QwtPolarPanner()

QwtPolarPanner::~QwtPolarPanner ( )

virtual

Destructor.

Definition at line 24 of file qwt_polar_panner.cpp.

Member Function Documentation

◆ canvas() [1/2]

QwtPolarCanvas * QwtPolarPanner::canvas ( )

Returns: observed plot canvas

Definition at line 29 of file qwt_polar_panner.cpp.

◆ canvas() [2/2]

const QwtPolarCanvas * QwtPolarPanner::canvas ( ) const

Returns: observed plot canvas

Definition at line 35 of file qwt_polar_panner.cpp.

◆ movePlot

void QwtPolarPanner::movePlot	(	int	dx,
		int	dy )

virtualslot

Adjust the zoomed area according to dx/dy

Parameters

dx	Pixel offset in x direction
dy	Pixel offset in y direction

See also: QwtPanner::panned(), QwtPolarPlot::zoom()

Definition at line 68 of file qwt_polar_panner.cpp.

◆ plot() [1/2]

QwtPolarPlot * QwtPolarPanner::plot ( )

Returns: observed plot

Definition at line 41 of file qwt_polar_panner.cpp.

◆ plot() [2/2]

const QwtPolarPlot * QwtPolarPanner::plot ( ) const

Returns: observed plot

Definition at line 51 of file qwt_polar_panner.cpp.

◆ widgetMousePressEvent()

void QwtPolarPanner::widgetMousePressEvent ( QMouseEvent * event )

overrideprotectedvirtual

Block panning when the plot zoom factor is >= 1.0.

Parameters

event Mouse event

Reimplemented from QwtPanner.

Definition at line 108 of file qwt_polar_panner.cpp.

Public Slots

Public Member Functions

Protected Member Functions

Additional Inherited Members