QwtPolarPanner 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)
	Adjust the zoomed area according to dx/dy.

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

virtual	~QwtPolarCachePanner ()
	Destructor.

QwtPolarPlot *	plot ()

const QwtPolarPlot *	plot () const

QwtPolarCanvas *	canvas ()

const QwtPolarCanvas *	canvas () const

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

virtual	~QwtCachePanner ()
	Destructor.

void	setEnabled (bool)
	En/disable the panner.

bool	isEnabled () const

void	setMouseButton (Qt::MouseButton, Qt::KeyboardModifiers=Qt::NoModifier)
	Change the mouse button and modifiers used for panning The defaults are Qt::LeftButton and 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)
	Change the abort key The defaults are Qt::Key_Escape and Qt::NoModifiers.

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 The default is the cursor of the parent widget.

const QCursor	cursor () const

void	setOrientations (Qt::Orientations)
	Set the orientations, where panning is enabled The default value is in both directions: Qt::Horizontal \| Qt::Vertical.

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

bool	isOrientationEnabled (Qt::Orientation) const

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

Protected Member Functions
virtual void	widgetMousePressEvent (QMouseEvent *) QWT_OVERRIDE
	Block panning when the plot zoom factor is >= 1.0.

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 *) QWT_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

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

Member Function Documentation

◆ canvas() [1/2]

QwtPolarCanvas * QwtPolarCachePanner::canvas ( )

Returns: observed plot canvas

◆ canvas() [2/2]

const QwtPolarCanvas * QwtPolarCachePanner::canvas ( ) const

Returns: observed plot canvas

◆ movePlot

void QwtPolarCachePanner::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()

◆ plot() [1/2]

QwtPolarPlot * QwtPolarCachePanner::plot ( )

Returns: observed plot

◆ plot() [2/2]

const QwtPolarPlot * QwtPolarCachePanner::plot ( ) const

Returns: observed plot

◆ widgetMousePressEvent()

void QwtPolarCachePanner::widgetMousePressEvent ( QMouseEvent * event )

protectedvirtual

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

Public Slots

Public Member Functions

Protected Member Functions

Additional Inherited Members