QwtPolarPanner - QwtPolarPanner provides panning of a polar plot canvas.

NAME  SYNOPSIS  Public Slots  Public Member Functions  Protected Member Functions  Additional Inherited Members  Detailed Description  Constructor & Destructor Documentation  QwtPolarPanner::QwtPolarPanner (QwtPolarCanvas * canvas) [explicit]  QwtPolarPanner::˜QwtPolarPanner () [virtual]  Member Function Documentation  QwtPolarCanvas * QwtPolarPanner::canvas ()  const QwtPolarCanvas * QwtPolarPanner::canvas () const  void QwtPolarPanner::movePlot (int dx, int dy) [virtual], [slot]  QwtPolarPlot * QwtPolarPanner::plot ()  const QwtPolarPlot * QwtPolarPanner::plot () const  void QwtPolarPanner::widgetMousePressEvent (QMouseEvent * event)[override], [protected], [virtual]  Author 

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NAME

QwtPolarPanner − QwtPolarPanner provides panning of a polar plot canvas.

SYNOPSIS

#include <qwt_polar_panner.h>

Inherits QwtPanner.

Public Slots

virtual void movePlot (int dx, int dy)

Public Member Functions

QwtPolarPanner (QwtPolarCanvas *)
Create a plot panner for a polar plot canvas.
virtual ˜QwtPolarPanner ()
Destructor.
QwtPolarPlot * plot ()
const QwtPolarPlot * plot () const
QwtPolarCanvas * canvas ()
const QwtPolarCanvas * canvas () 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 void widgetMousePressEvent (QMouseEvent *) override

Protected Member Functions inherited from QwtPanner

virtual void widgetMouseReleaseEvent (QMouseEvent *)
virtual void widgetMouseMoveEvent (QMouseEvent *)
virtual void widgetKeyPressEvent (QKeyEvent *)
virtual void widgetKeyReleaseEvent (QKeyEvent *)
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

Additional Inherited Members

Signals inherited from QwtPanner

void panned (int dx, int dy)
void moved (int dx, int dy)

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

Definition at line 30 of file qwt_polar_panner.h.

Constructor & Destructor Documentation

QwtPolarPanner::QwtPolarPanner (QwtPolarCanvas * canvas) [explicit]

Create a plot panner for a polar plot canvas.

Definition at line 16 of file qwt_polar_panner.cpp.

QwtPolarPanner::˜QwtPolarPanner () [virtual]

Destructor.

Definition at line 24 of file qwt_polar_panner.cpp.

Member Function Documentation

QwtPolarCanvas * QwtPolarPanner::canvas ()

Returns

observed plot canvas

Definition at line 29 of file qwt_polar_panner.cpp.

const QwtPolarCanvas * QwtPolarPanner::canvas () const

Returns

observed plot canvas

Definition at line 35 of file qwt_polar_panner.cpp.

void QwtPolarPanner::movePlot (int dx, int dy) [virtual], [slot]

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()

Definition at line 68 of file qwt_polar_panner.cpp.

QwtPolarPlot * QwtPolarPanner::plot ()

Returns

observed plot

Definition at line 41 of file qwt_polar_panner.cpp.

const QwtPolarPlot * QwtPolarPanner::plot () const

Returns

observed plot

Definition at line 51 of file qwt_polar_panner.cpp.

void QwtPolarPanner::widgetMousePressEvent (QMouseEvent * event)[override], [protected], [virtual]

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

Parameters

event Mouse event

Reimplemented from QwtPanner.

Definition at line 108 of file qwt_polar_panner.cpp.

Author

Generated automatically by Doxygen for Qwt User’s Guide from the source code.

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