QwtPolarPicker - QwtPolarPicker provides selections on a plot canvas.

NAME SYNOPSIS Signals Public Member Functions Protected Member Functions Private Member Functions Additional Inherited Members Detailed Description Constructor & Destructor Documentation QwtPolarPicker::QwtPolarPicker (QwtPolarCanvas * canvas) [explicit] QwtPolarPicker::˜QwtPolarPicker () [virtual] QwtPolarPicker::QwtPolarPicker (RubberBand rubberBand, DisplayModetrackerMode, QwtPolarCanvas * canvas) [explicit] Member Function Documentation void QwtPolarPicker::append (const QPoint & pos) [override], [protected],[virtual] void QwtPolarPicker::appended (const QwtPointPolar & pos) [signal] QwtPolarCanvas * QwtPolarPicker::canvas () const QwtPolarCanvas * QwtPolarPicker::canvas () const bool QwtPolarPicker::end (bool ok = true) [override], [protected],[virtual] QwtPointPolar QwtPolarPicker::invTransform (const QPoint & pos) const[protected] void QwtPolarPicker::move (const QPoint & pos) [override], [protected],[virtual] void QwtPolarPicker::moved (const QwtPointPolar & pos) [signal] QPainterPath QwtPolarPicker::pickArea () const [override], [private],[virtual] QRect QwtPolarPicker::pickRect () const [virtual] QwtPolarPlot * QwtPolarPicker::plot () const QwtPolarPlot * QwtPolarPicker::plot () const void QwtPolarPicker::selected (const QVector< QwtPointPolar > & points)[signal] void QwtPolarPicker::selected (const QwtPointPolar & pos) [signal] QwtText QwtPolarPicker::trackerText (const QPoint & pos) const [override],[protected], [virtual] QwtText QwtPolarPicker::trackerTextPolar (const QwtPointPolar & pos) const[protected], [virtual] Author

NAME

QwtPolarPicker − QwtPolarPicker provides selections on a plot canvas.

SYNOPSIS

#include <qwt_polar_picker.h>

Inherits QwtPicker.

Signals

void selected (const QwtPointPolar &pos)
void selected (const QVector< QwtPointPolar > &points)
void appended (const QwtPointPolar &pos)
void moved (const QwtPointPolar &pos)

Signals inherited from QwtPicker

void activated (bool on)
void selected (const QPolygon &polygon)
void appended (const QPoint &pos)
void moved (const QPoint &pos)
void removed (const QPoint &pos)
void changed (const QPolygon &selection)

Public Member Functions

QwtPolarPicker (QwtPolarCanvas *)
Create a polar plot picker.
virtual ˜QwtPolarPicker ()
Destructor.
QwtPolarPicker (RubberBand rubberBand, DisplayMode trackerMode, QwtPolarCanvas *)
QwtPolarPlot * plot ()
const QwtPolarPlot * plot () const
QwtPolarCanvas * canvas ()
const QwtPolarCanvas * canvas () const
virtual QRect pickRect () const

Public Member Functions inherited from QwtPicker

QwtPicker (QWidget *parent)
QwtPicker (RubberBand rubberBand, DisplayMode trackerMode, QWidget *)
virtual ˜QwtPicker ()
Destructor.
void setStateMachine (QwtPickerMachine *)
const QwtPickerMachine * stateMachine () const
QwtPickerMachine * stateMachine ()
void setRubberBand (RubberBand)
RubberBand rubberBand () const
void setTrackerMode (DisplayMode)
Set the display mode of the tracker.
DisplayMode trackerMode () const
void setResizeMode (ResizeMode)
Set the resize mode.
ResizeMode resizeMode () const
void setRubberBandPen (const QPen &)
QPen rubberBandPen () const
void setTrackerPen (const QPen &)
QPen trackerPen () const
void setTrackerFont (const QFont &)
QFont trackerFont () const
bool isEnabled () const
bool isActive () const
virtual bool eventFilter (QObject *, QEvent *) override
Event filter.
QWidget * parentWidget ()
Return the parent widget, where the selection happens.
const QWidget * parentWidget () const
Return the parent widget, where the selection happens.
virtual void drawRubberBand (QPainter *) const
virtual void drawTracker (QPainter *) const
virtual QRegion trackerMask () const
virtual QRegion rubberBandMask () const
QPoint trackerPosition () const
virtual QRect trackerRect (const QFont &) const
QPolygon selection () const

Public Member Functions inherited from QwtEventPattern

QwtEventPattern ()
virtual ˜QwtEventPattern ()
Destructor.
void initMousePattern (int numButtons)
void initKeyPattern ()
void setMousePattern (MousePatternCode, Qt::MouseButton button, Qt::KeyboardModifiers=Qt::NoModifier)
void setKeyPattern (KeyPatternCode, int key, Qt::KeyboardModifiers modifiers=Qt::NoModifier)
void setMousePattern (const QVector< MousePattern > &)
Change the mouse event patterns.
void setKeyPattern (const QVector< KeyPattern > &)
Change the key event patterns.
const QVector< MousePattern > & mousePattern () const
const QVector< KeyPattern > & keyPattern () const
QVector< MousePattern > & mousePattern ()
QVector< KeyPattern > & keyPattern ()
bool mouseMatch (MousePatternCode, const QMouseEvent *) const
Compare a mouse event with an event pattern.
bool keyMatch (KeyPatternCode, const QKeyEvent *) const
Compare a key event with an event pattern.

Protected Member Functions

QwtPointPolar invTransform (const QPoint &) const
virtual QwtText trackerText (const QPoint &) const override
virtual QwtText trackerTextPolar (const QwtPointPolar &) const
Translate a position into a position string.
virtual void move (const QPoint &) override
virtual void append (const QPoint &) override
virtual bool end (bool ok=true) override

Protected Member Functions inherited from QwtPicker

virtual QPolygon adjustedPoints (const QPolygon &) const
Map the pickedPoints() into a selection()
virtual void transition (const QEvent *)
virtual void begin ()
virtual void remove ()
virtual bool accept (QPolygon &) const
Validate and fix up the selection.
virtual void reset ()
virtual void widgetMousePressEvent (QMouseEvent *)
virtual void widgetMouseReleaseEvent (QMouseEvent *)
virtual void widgetMouseDoubleClickEvent (QMouseEvent *)
virtual void widgetMouseMoveEvent (QMouseEvent *)
virtual void widgetWheelEvent (QWheelEvent *)
virtual void widgetKeyPressEvent (QKeyEvent *)
virtual void widgetKeyReleaseEvent (QKeyEvent *)
virtual void widgetEnterEvent (QEvent *)
virtual void widgetLeaveEvent (QEvent *)
virtual void stretchSelection (const QSize &oldSize, const QSize &newSize)
virtual void updateDisplay ()
Update the state of rubber band and tracker label.
const QwtWidgetOverlay * rubberBandOverlay () const
const QwtWidgetOverlay * trackerOverlay () const
const QPolygon & pickedPoints () const
QRect trackerRect (const QSize &) const

Protected Member Functions inherited from QwtEventPattern

virtual bool mouseMatch (const MousePattern &, const QMouseEvent *) const
Compare a mouse event with an event pattern.
virtual bool keyMatch (const KeyPattern &, const QKeyEvent *) const
Compare a key event with an event pattern.

Private Member Functions

virtual QPainterPath pickArea () const override

Additional Inherited Members

Public Types inherited from QwtPicker

enum RubberBand { NoRubberBand = 0, HLineRubberBand, VLineRubberBand, CrossRubberBand, RectRubberBand, EllipseRubberBand, PolygonRubberBand, UserRubberBand = 100 }
enum DisplayMode { AlwaysOff, AlwaysOn, ActiveOnly }
Display mode.
enum ResizeMode { Stretch, KeepSize }

Public Types inherited from QwtEventPattern

enum MousePatternCode { MouseSelect1, MouseSelect2, MouseSelect3, MouseSelect4, MouseSelect5, MouseSelect6, MousePatternCount }
Symbolic mouse input codes.
enum KeyPatternCode { KeySelect1, KeySelect2, KeyAbort, KeyLeft, KeyRight, KeyUp, KeyDown, KeyRedo, KeyUndo, KeyHome, KeyPatternCount }
Symbolic keyboard input codes.

Public Slots inherited from QwtPicker

void setEnabled (bool)
En/disable the picker.

Detailed Description

QwtPolarPicker provides selections on a plot canvas.

QwtPolarPicker is a QwtPicker tailored for selections on a polar plot canvas.

Definition at line 28 of file qwt_polar_picker.h.

Constructor & Destructor Documentation

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

Create a polar plot picker.

Parameters

canvas Plot canvas to observe, also the parent object

Definition at line 25 of file qwt_polar_picker.cpp.

QwtPolarPicker::˜QwtPolarPicker () [virtual]

Destructor.

Definition at line 51 of file qwt_polar_picker.cpp.

QwtPolarPicker::QwtPolarPicker (RubberBand rubberBand, DisplayModetrackerMode, QwtPolarCanvas * canvas) [explicit]

Create a plot picker

Parameters

rubberBand Rubberband style
trackerMode Tracker mode
canvas Plot canvas to observe, also the parent object

See also

QwtPicker, QwtPicker::setSelectionFlags(), QwtPicker::setRubberBand(), QwtPicker::setTrackerMode

QwtPolarPlot::autoReplot(), QwtPolarPlot::replot(), scaleRect()

Definition at line 43 of file qwt_polar_picker.cpp.

Member Function Documentation

void QwtPolarPicker::append (const QPoint & pos) [override], [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.

Definition at line 128 of file qwt_polar_picker.cpp.

void QwtPolarPicker::appended (const QwtPointPolar & pos) [signal]

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

Parameters

Point in plot coordinates

See also

transform(), canvas()

Definition at line 208 of file qwt_polar_picker.cpp.

void QwtPolarPicker::move (const QPoint & pos) [override], [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.

Definition at line 143 of file qwt_polar_picker.cpp.

void QwtPolarPicker::moved (const QwtPointPolar & 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()

QPainterPath QwtPolarPicker::pickArea () const [override], [private],[virtual]

Find the area of the observed widget, where selection might happen.

Returns

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Updated 2026-06-01 - jenkler.se | uex.se