Signals¶

void appended (const QwtDoublePoint &pos)
void moved (const QwtDoublePoint &pos)
void selected (const QwtDoublePoint &pos)
void selected (const QwtDoubleRect &rect)
void selected (const QwtArray< QwtDoublePoint > &pa)

Public Member Functions¶

QwtPlotPicker (QwtPlotCanvas *)
QwtPlotPicker (int xAxis, int yAxis, QwtPlotCanvas *)
QwtPlotPicker (int xAxis, int yAxis, int selectionFlags, RubberBand rubberBand, DisplayMode trackerMode, QwtPlotCanvas *)
virtual ~QwtPlotPicker ()
QwtPlotCanvas * canvas ()
const QwtPlotCanvas * canvas () const
QwtPlot * plot ()
const QwtPlot * plot () const
virtual void setAxis (int xAxis, int yAxis)
int xAxis () const
int yAxis () const

Protected Member Functions¶

virtual void append (const QPoint &)
virtual bool end (bool ok=true)
QwtDoubleRect invTransform (const QRect &) const
QwtDoublePoint invTransform (const QPoint &) const
virtual void move (const QPoint &)
QwtDoubleRect scaleRect () const
virtual QwtText trackerText (const QPoint &) const
virtual QwtText trackerText (const QwtDoublePoint &) const
QRect transform (const QwtDoubleRect &) const
QPoint transform (const QwtDoublePoint &) const

Additional Inherited Members¶

QwtPlotPicker::QwtPlotPicker (QwtPlotCanvas *canvas) [explicit]¶

Create a plot picker. The picker is set to those x- and y-axis of the plot that are enabled. If both or no x-axis are enabled, the picker is set to QwtPlot::xBottom. If both or no y-axis are enabled, it is set to QwtPlot::yLeft.

Parameters:

See also:

QwtPlotPicker::QwtPlotPicker (intxAxis, intyAxis, QwtPlotCanvas *canvas) [explicit]¶

Create a plot picker

Parameters:

See also:

QwtPlotPicker::QwtPlotPicker (intxAxis, intyAxis, intselectionFlags, RubberBandrubberBand, DisplayModetrackerMode, QwtPlotCanvas *canvas) [explicit]¶

Create a plot picker

Parameters:

See also:

void QwtPlotPicker::append (const QPoint &pos) [protected], [virtual]¶

Append a point to the selection and update rubberband and tracker.

Parameters:

See also:

Note:

Reimplemented from QwtPicker.

void QwtPlotPicker::appended (const QwtDoublePoint &pos) [signal]¶

A signal emitted when a point has been appended to the selection

Parameters:

See also:

bool QwtPlotPicker::end (boolok = true) [protected], [virtual]¶

Close a selection setting the state to inactive.

Parameters:

Returns:

Reimplemented from QwtPicker.

Reimplemented in QwtPlotZoomer.

QwtDoubleRect QwtPlotPicker::invTransform (const QRect &rect) const [protected]¶

Translate a rectangle from pixel into plot coordinates

Returns:

See also:

QwtDoublePoint QwtPlotPicker::invTransform (const QPoint &pos) const [protected]¶

Translate a point from pixel into plot coordinates

Returns:

See also:

void QwtPlotPicker::move (const QPoint &pos) [protected], [virtual]¶

Move the last point of the selection

Parameters:

See also:

Note:

Reimplemented from QwtPicker.

void QwtPlotPicker::moved (const QwtDoublePoint &pos) [signal]¶

A signal emitted whenever the last appended point of the selection has been moved.

Parameters:

See also:

QwtDoubleRect QwtPlotPicker::scaleRect () const [protected]¶

Return normalized bounding rect of the axes

See also:

void QwtPlotPicker::selected (const QwtDoublePoint &pos) [signal]¶

A signal emitted in case of selectionFlags() & PointSelection.

Parameters:

void QwtPlotPicker::selected (const QwtDoubleRect &rect) [signal]¶

A signal emitted in case of selectionFlags() & RectSelection.

Parameters:

void QwtPlotPicker::selected (const QwtArray< QwtDoublePoint > &pa) [signal]¶

A signal emitting the selected points, at the end of a selection.

Parameters:

void QwtPlotPicker::setAxis (intxAxis, intyAxis) [virtual]¶

Set the x and y axes of the picker

Parameters:

Reimplemented in QwtPlotZoomer.

QwtText QwtPlotPicker::trackerText (const QPoint &pos) const [protected], [virtual]¶

Translate a pixel position into a position string

Parameters:

Returns:

Reimplemented from QwtPicker.

QwtText QwtPlotPicker::trackerText (const QwtDoublePoint &pos) const [protected], [virtual]¶

Translate a position into a position string. In case of HLineRubberBand the label is the value of the y position, in case of VLineRubberBand the value of the x position. Otherwise the label contains x and y position separated by a ',' .

The format for the double to string conversion is '%.4f'.

Parameters:

Returns:

QRect QwtPlotPicker::transform (const QwtDoubleRect &rect) const [protected]¶

Translate a rectangle from plot into pixel coordinates

Returns:

See also:

QPoint QwtPlotPicker::transform (const QwtDoublePoint &pos) const [protected]¶

Translate a point from plot into pixel coordinates

Returns:

See also: