QwtPlotPanner - QwtPlotPanner provides panning of a plot canvas.

NAME  SYNOPSIS  Public Slots  Public Member Functions  Protected Member Functions  Additional Inherited Members  Detailed Description  Constructor & Destructor Documentation  QwtPlotPanner::QwtPlotPanner (QWidget * canvas) [explicit]  QwtPlotPanner::˜QwtPlotPanner () [virtual]  Member Function Documentation  QWidget * QwtPlotPanner::canvas ()  const QWidget * QwtPlotPanner::canvas () const  QBitmap QwtPlotPanner::contentsMask () const [override], [protected],[virtual]  QPixmap QwtPlotPanner::grab () const [override], [protected], [virtual]  bool QwtPlotPanner::isAxisEnabled (QwtAxisId axisId) const  void QwtPlotPanner::moveCanvas (int dx, int dy) [virtual], [slot]  QwtPlot * QwtPlotPanner::plot ()  const QwtPlot * QwtPlotPanner::plot () const  void QwtPlotPanner::setAxisEnabled (QwtAxisId axisId, bool on)  Author 

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NAME

QwtPlotPanner − QwtPlotPanner provides panning of a plot canvas.

SYNOPSIS

#include <qwt_plot_panner.h>

Inherits QwtPanner.

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 (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 () [virtual]

Destructor.

Definition at line 138 of file qwt_plot_panner.cpp.

Member Function Documentation

QWidget * QwtPlotPanner::canvas ()

Return observed plot canvas.

Definition at line 177 of file qwt_plot_panner.cpp.

const QWidget * QwtPlotPanner::canvas () const

Return Observed plot canvas.

Definition at line 183 of file qwt_plot_panner.cpp.

QBitmap QwtPlotPanner::contentsMask () const [override], [protected],[virtual]

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.

QPixmap QwtPlotPanner::grab () const [override], [protected], [virtual]

Returns

Pixmap with the content of the canvas

Reimplemented from QwtPanner.

Definition at line 278 of file qwt_plot_panner.cpp.

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.

void QwtPlotPanner::moveCanvas (int dx, int dy) [virtual], [slot]

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.

QwtPlot * QwtPlotPanner::plot ()

Return plot widget, containing the observed plot canvas.

Definition at line 189 of file qwt_plot_panner.cpp.

const QwtPlot * QwtPlotPanner::plot () const

Return plot widget, containing the observed plot canvas.

Definition at line 199 of file qwt_plot_panner.cpp.

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.

Author

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