QwtPlotPicker(3)

📦 version 5.2.3a, in epel 9, fedora 43, fedora 44

💖 QwtPlotPicker 💖

okay bestie, welcome to the QwtPlotPicker(3) page from the Qwt User's Guide — yes that's the manual, we're folding that in like a lil name tag at the party 🎀

✨ NAME ✨

QwtPlotPicker — (that's it, that's the name, the manpage literally just says the name and nothing else, iconic minimalism honestly 💅)

🌸 SYNOPSIS 🌸

#include <qwt_plot_picker.h>

Inherits QwtPicker.

Inherited by QwtPlotZoomer.

📡 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

(yes bestie, there's a whole Additional Inherited Members situation going on in here — the family tree is deep 🌈)

👑 Detailed Description 👑

QwtPlotPicker provides selections on a plot canvas.

QwtPlotPicker is a QwtPicker tailored for selections on a plot canvas. It is set to a x-Axis and y-Axis and translates all pixel coordinates into this coodinate system. (yes, "coodinate", we do not fix the typo, we respect the original, periodt 💅)

🎀 Constructor & Destructor Documentation 🎀

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:

  • canvas — Plot canvas to observe, also the parent object

See also:

  • QwtPlot::autoReplot(), QwtPlot::replot(), QwtPlotPicker::scaleRect()

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

Create a plot picker

Parameters:

  • xAxis — Set the x axis of the picker
  • yAxis — Set the y axis of the picker
  • canvas — Plot canvas to observe, also the parent object

See also:

  • QwtPlot::autoReplot(), QwtPlot::replot(), QwtPlotPicker::scaleRect()

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

Create a plot picker

Parameters:

  • xAxis — X axis of the picker
  • yAxis — Y axis of the picker
  • selectionFlags — Or'd value of SelectionType, RectSelectionType and SelectionMode
  • rubberBand — Rubberband style
  • trackerMode — Tracker mode
  • canvas — Plot canvas to observe, also the parent object

See also:

  • QwtPicker, QwtPicker::setSelectionFlags(), QwtPicker::setRubberBand(), QwtPicker::setTrackerMode()
  • QwtPlot::autoReplot(), QwtPlot::replot(), QwtPlotPicker::scaleRect()

🌈 Member Function Documentation 🌈

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

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

Parameters:

  • pos — Additional point

See also:

  • isActive, begin(), end(), move(), appended()
Note: The appended(const QPoint &), appended(const QDoublePoint &) signals are emitted.

Reimplemented from QwtPicker.

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

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

Parameters:

  • pos — Position of the appended point.

See also:

  • append(). moved()

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

Close a selection setting the state to inactive.

Parameters:

  • ok — If true, complete the selection and emit selected signals otherwise discard the selection.

Returns:

  • true if the selection is accepted, false otherwise

Reimplemented from QwtPicker.

Reimplemented in QwtPlotZoomer.

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

Translate a rectangle from pixel into plot coordinates

Returns:

  • Rectangle in plot coordinates

See also:

  • QwtPlotPicker::transform()

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

Translate a point from pixel into plot coordinates

Returns:

  • Point in plot coordinates

See also:

  • QwtPlotPicker::transform()

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

Move the last point of the selection

Parameters:

  • pos — New position

See also:

  • isActive, begin(), end(), append()
Note: The moved(const QPoint &), moved(const QDoublePoint &) signals are emitted.

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:

  • pos — Position of the moved last point of the selection.

See also:

  • move(), appended()

QwtDoubleRect QwtPlotPicker::scaleRect () const [protected]

Return normalized bounding rect of the axes

See also:

  • QwtPlot::autoReplot(), QwtPlot::replot().

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

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

Parameters:

  • pos — Selected point

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

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

Parameters:

  • rect — Selected rectangle

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

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

Parameters:

  • pa — Selected points

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

Set the x and y axes of the picker

Parameters:

  • xAxis — X axis
  • yAxis — Y axis

Reimplemented in QwtPlotZoomer.

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

Translate a pixel position into a position string

Parameters:

  • pos — Position in pixel coordinates

Returns:

  • Position string

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:

  • pos — Position

Returns:

  • Position string

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

Translate a rectangle from plot into pixel coordinates

Returns:

  • Rectangle in pixel coordinates

See also:

  • QwtPlotPicker::invTransform()

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

Translate a point from plot into pixel coordinates

Returns:

  • Point in pixel coordinates

See also:

  • QwtPlotPicker::invTransform()

🦋 Author 🦋

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

okay and that's the whole page bestie, no cap, every single flag and signal accounted for 💖 this was Version 5.2.3, dated Tue Nov 20 2012 — so like, ancient in internet years but she's still serving 💅 go forth and pick some plots, you got this 🫶✨

📦 where this page comes from