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

#include <qwt_polar_cache_panner.h>

Inheritance diagram for QwtPolarCachePanner:

Public Slots
virtual void	movePlot (int dx, int dy)
	Move the plot.

Public Member Functions
	QwtPolarCachePanner (QwtPolarCanvas *)
	Constructor.

virtual	~QwtPolarCachePanner ()
	Destructor.

QwtPolarPlot *	plot ()
	Get the plot.

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

QwtPolarCanvas *	canvas ()
	Get the canvas.

const QwtPolarCanvas *	canvas () const
	Get the canvas (const version)

Public Member Functions inherited from QwtCachePanner
	QwtCachePanner (QWidget *parent)
	Creates a panner that is enabled for the left mouse button.

virtual	~QwtCachePanner ()
	Destructor .

void	setEnabled (bool)
	En/disable the panner.

bool	isEnabled () const
	Return whether the panner is enabled.

void	setMouseButton (Qt::MouseButton, Qt::KeyboardModifiers=Qt::NoModifier)
	Change the mouse button and modifiers used for panning.

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

void	setAbortKey (int key, Qt::KeyboardModifiers=Qt::NoModifier)
	Change the abort key.

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

void	setCursor (const QCursor &)
	Change the cursor that is active while panning.

const QCursor	cursor () const
	Return the cursor that is active while panning.

void	setOrientations (Qt::Orientations)
	Set the orientations where panning is enabled.

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

bool	isOrientationEnabled (Qt::Orientation) const
	Check if an orientation is enabled.

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

Protected Member Functions
virtual void	widgetMousePressEvent (QMouseEvent *) override
	Handle mouse press events.

Protected Member Functions inherited from QwtCachePanner
virtual void	widgetMouseReleaseEvent (QMouseEvent *)
	Handle a mouse release event for the observed widget.

virtual void	widgetMouseMoveEvent (QMouseEvent *)
	Handle a mouse move event for the observed widget.

virtual void	widgetKeyPressEvent (QKeyEvent *)
	Handle a key press event for the observed widget.

virtual void	widgetKeyReleaseEvent (QKeyEvent *)
	Handle a key release event for the observed widget.

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
	Grab the widget into a pixmap.

Additional Inherited Members
Signals inherited from QwtCachePanner
void	panned (int dx, int dy)
	Signal emitted when panning is done.

void	moved (int dx, int dy)
	Signal emitted while the widget moved, but panning is not finished.

Detailed Description

QwtPolarCachePanner provides panning of a polar plot canvas.

Constructor & Destructor Documentation

◆ QwtPolarCachePanner()

QwtPolarCachePanner::QwtPolarCachePanner ( QwtPolarCanvas * canvas )

explicit

Constructor.

Create a plot panner for a polar plot canvas.

◆ ~QwtPolarCachePanner()

QwtPolarCachePanner::~QwtPolarCachePanner ( )

virtual

Destructor.

Destructor

.

Member Function Documentation

◆ canvas() [1/2]

QwtPolarCanvas * QwtPolarCachePanner::canvas ( )

Get the canvas.

Get the observed plot canvas.

◆ canvas() [2/2]

const QwtPolarCanvas * QwtPolarCachePanner::canvas ( ) const

Get the canvas (const version)

Get the observed plot canvas (const version)

◆ movePlot

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

virtualslot

Move the plot.

Adjust the zoomed area according to dx/dy.

◆ plot() [1/2]

QwtPolarPlot * QwtPolarCachePanner::plot ( )

Get the plot.

Get the observed plot.

◆ plot() [2/2]

const QwtPolarPlot * QwtPolarCachePanner::plot ( ) const

Get the plot (const version)

Get the observed plot (const version)

◆ widgetMousePressEvent()

void QwtPolarCachePanner::widgetMousePressEvent ( QMouseEvent * event )

overrideprotectedvirtual

Handle mouse press events.

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

Parameters

event Mouse event

Reimplemented from QwtCachePanner.

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

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

Public Slots

Public Member Functions

Protected Member Functions

Additional Inherited Members