QwtPlotPanner provides panning of a plot canvas. More...

#include <qwt_plot_panner.h>

Inheritance diagram for QwtPlotPanner:

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

Public Member Functions
	QwtPlotPanner (QWidget *)
	A panner for the canvas of a QwtPlot.

virtual	~QwtPlotPanner ()
	Destructor.

QWidget *	canvas ()
	Return observed plot canvas.

const QWidget *	canvas () const
	Return Observed plot canvas.

QwtPlot *	plot ()
	Return plot widget, containing the observed plot canvas.

const QwtPlot *	plot () const
	Return plot widget, containing the observed plot canvas.

void	setAxisEnabled (QwtAxisId axisId, bool on)
	En/Disable an axis.

bool	isAxisEnabled (QwtAxisId) 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 QBitmap	contentsMask () const override

virtual QPixmap	grab () const override

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

virtual void	widgetMouseReleaseEvent (QMouseEvent *)

virtual void	widgetMouseMoveEvent (QMouseEvent *)

virtual void	widgetKeyPressEvent (QKeyEvent *)

virtual void	widgetKeyReleaseEvent (QKeyEvent *)

virtual void	paintEvent (QPaintEvent *) override
	Paint event.

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

void	moved (int dx, int dy)

Detailed Description

QwtPlotPanner provides panning of a plot canvas.

QwtPlotPanner is a panner for a plot canvas, that adjusts the scales of the axes after dropping the canvas on its new position.

Together with QwtPlotZoomer and QwtPlotMagnifier powerful ways of navigating on a QwtPlot widget can be implemented easily.

Note: The axes are not updated, while dragging the canvas

See also: QwtPlotZoomer, QwtPlotMagnifier

Definition at line 32 of file qwt_plot_panner.h.

Constructor & Destructor Documentation

◆ QwtPlotPanner()

QwtPlotPanner::QwtPlotPanner ( QWidget * canvas )

explicit

A panner for the canvas of a QwtPlot.

The panner is enabled for all axes

Parameters

canvas Plot canvas to pan, also the parent object

See also: setAxisEnabled()

Definition at line 128 of file qwt_plot_panner.cpp.

◆ ~QwtPlotPanner()

QwtPlotPanner::~QwtPlotPanner ( )

virtual

Destructor.

Definition at line 138 of file qwt_plot_panner.cpp.

Member Function Documentation

◆ canvas() [1/2]

QWidget * QwtPlotPanner::canvas ( )

Return observed plot canvas.

Definition at line 177 of file qwt_plot_panner.cpp.

◆ canvas() [2/2]

const QWidget * QwtPlotPanner::canvas ( ) const

Return Observed plot canvas.

Definition at line 183 of file qwt_plot_panner.cpp.

◆ contentsMask()

QBitmap QwtPlotPanner::contentsMask ( ) const

overrideprotectedvirtual

Calculate a mask from the border path of the canvas

Returns: Mask as bitmap

See also: QwtPlotCanvas::borderPath()

Reimplemented from QwtPanner.

Definition at line 267 of file qwt_plot_panner.cpp.

◆ grab()

QPixmap QwtPlotPanner::grab ( ) const

overrideprotectedvirtual

Returns: Pixmap with the content of the canvas

Reimplemented from QwtPanner.

Definition at line 278 of file qwt_plot_panner.cpp.

◆ isAxisEnabled()

bool QwtPlotPanner::isAxisEnabled ( QwtAxisId axisId ) const

Test if an axis is enabled

Parameters

axisId Axis

Returns: True, if the axis is enabled

See also: setAxisEnabled(), moveCanvas()

Definition at line 168 of file qwt_plot_panner.cpp.

◆ moveCanvas

void QwtPlotPanner::moveCanvas	(	int	dx,
		int	dy )

virtualslot

Adjust the enabled axes according to dx/dy

Parameters

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

See also: QwtPanner::panned()

Definition at line 216 of file qwt_plot_panner.cpp.

◆ plot() [1/2]

QwtPlot * QwtPlotPanner::plot ( )

Return plot widget, containing the observed plot canvas.

Definition at line 189 of file qwt_plot_panner.cpp.

◆ plot() [2/2]

const QwtPlot * QwtPlotPanner::plot ( ) const

Return plot widget, containing the observed plot canvas.

Definition at line 199 of file qwt_plot_panner.cpp.

◆ setAxisEnabled()

void QwtPlotPanner::setAxisEnabled	(	QwtAxisId	axisId,
		bool	on )

En/Disable an axis.

Axes that are enabled will be synchronized to the result of panning. All other axes will remain unchanged.

Parameters

axisId	Axis id
on	On/Off

See also: isAxisEnabled(), moveCanvas()

Definition at line 154 of file qwt_plot_panner.cpp.

Public Slots

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QwtPlotPanner()

◆ ~QwtPlotPanner()

Member Function Documentation

◆ canvas() [1/2]

◆ canvas() [2/2]

◆ contentsMask()

◆ grab()

◆ isAxisEnabled()

◆ moveCanvas

◆ plot() [1/2]

◆ plot() [2/2]

◆ setAxisEnabled()