QwtCachePanner Class Reference

QwtCachePanner provides panning of a widget. More...

#include <qwt_cache_panner.h>

Inheritance diagram for QwtCachePanner:

Classes
class	PrivateData

Signals
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.

Public Member Functions
	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 *)
	Handle a mouse press event for the observed widget.
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.

Detailed Description

QwtCachePanner provides panning of a widget.

Constructor & Destructor Documentation

QwtCachePanner()

QwtCachePanner::QwtCachePanner ( QWidget *  parent )

explicit

Creates a panner that is enabled for the left mouse button.

~QwtCachePanner()

QwtCachePanner::~QwtCachePanner ( )

virtual

Destructor .

Member Function Documentation

contentsMask()

QBitmap QwtCachePanner::contentsMask ( ) const

protectedvirtual

Calculate a mask for the contents of the panned widget.

Reimplemented in QwtPlotCachePanner.

cursor()

const QCursor QwtCachePanner::cursor

(

)

const

Return the cursor that is active while panning.

eventFilter()

bool QwtCachePanner::eventFilter ( QObject *  object, QEvent *  event  )

overridevirtual

Event filter.

getAbortKey()

void QwtCachePanner::getAbortKey	(	int &	key,
		Qt::KeyboardModifiers &	modifiers
	)		const

Get the abort key and modifiers.

getMouseButton()

void QwtCachePanner::getMouseButton	(	Qt::MouseButton &	button,
		Qt::KeyboardModifiers &	modifiers
	)		const

Get mouse button and modifiers used for panning.

grab()

QPixmap QwtCachePanner::grab ( ) const

protectedvirtual

Grab the widget into a pixmap.

Reimplemented in QwtPlotCachePanner.

isEnabled()

bool QwtCachePanner::isEnabled

(

)

const

Return whether the panner is enabled.

isOrientationEnabled()

bool QwtCachePanner::isOrientationEnabled

(

Qt::Orientation

o

)

const

Check if an orientation is enabled.

moved

void QwtCachePanner::moved ( int  dx, int  dy  )

signal

Signal emitted while the widget moved, but panning is not finished.

orientations()

Qt::Orientations QwtCachePanner::orientations

(

)

const

Return the orientation where panning is enabled.

paintEvent()

void QwtCachePanner::paintEvent ( QPaintEvent *  event )

overrideprotectedvirtual

Paint event.

panned

void QwtCachePanner::panned ( int  dx, int  dy  )

signal

Signal emitted when panning is done.

setAbortKey()

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

Change the abort key.

setCursor()

void QwtCachePanner::setCursor

(

const QCursor &

cursor

)

Change the cursor that is active while panning.

setEnabled()

void QwtCachePanner::setEnabled

(

bool

on

)

En/disable the panner.

setMouseButton()

void QwtCachePanner::setMouseButton	(	Qt::MouseButton	button,
		Qt::KeyboardModifiers	modifiers = Qt::NoModifier
	)

Change the mouse button and modifiers used for panning.

setOrientations()

void QwtCachePanner::setOrientations

(

Qt::Orientations

o

)

Set the orientations where panning is enabled.

widgetKeyPressEvent()

void QwtCachePanner::widgetKeyPressEvent ( QKeyEvent *  keyEvent )

protectedvirtual

Handle a key press event for the observed widget.

Parameters

keyEvent

Key event

See also

eventFilter(), widgetKeyReleaseEvent()

widgetKeyReleaseEvent()

void QwtCachePanner::widgetKeyReleaseEvent ( QKeyEvent *  keyEvent )

protectedvirtual

Handle a key release event for the observed widget.

Parameters

keyEvent

Key event

See also

eventFilter(), widgetKeyReleaseEvent()

widgetMouseMoveEvent()

void QwtCachePanner::widgetMouseMoveEvent ( QMouseEvent *  mouseEvent )

protectedvirtual

Handle a mouse move event for the observed widget.

Parameters

mouseEvent

Mouse event

See also

eventFilter(), widgetMousePressEvent(), widgetMouseReleaseEvent()

widgetMousePressEvent()

void QwtCachePanner::widgetMousePressEvent ( QMouseEvent *  mouseEvent )

protectedvirtual

Handle a mouse press event for the observed widget.

Parameters

mouseEvent

Mouse event

See also

eventFilter(), widgetMouseReleaseEvent(), widgetMouseMoveEvent(),

Reimplemented in QwtPolarCachePanner.

widgetMouseReleaseEvent()

void QwtCachePanner::widgetMouseReleaseEvent ( QMouseEvent *  mouseEvent )

protectedvirtual

Handle a mouse release event for the observed widget.

Parameters

mouseEvent

Mouse event

See also

eventFilter(), widgetMousePressEvent(), widgetMouseMoveEvent(),

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

• /home/runner/work/QWT/QWT/src/plot/qwt_cache_panner.h
• /home/runner/work/QWT/QWT/src/plot/qwt_cache_panner.cpp