QwtPolarPicker provides selections on a plot canvas. More...

#include <qwt_polar_picker.h>

Inheritance diagram for QwtPolarPicker:

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. More...

enum	ResizeMode { Stretch , KeepSize }

Public Types inherited from QwtEventPattern
enum	MousePatternCode { MouseSelect1 , MouseSelect2 , MouseSelect3 , MouseSelect4 , MouseSelect5 , MouseSelect6 , MousePatternCount }
	Symbolic mouse input codes. More...

enum	KeyPatternCode { KeySelect1 , KeySelect2 , KeyAbort , KeyLeft , KeyRight , KeyUp , KeyDown , KeyRedo , KeyUndo , KeyHome , KeyPatternCount }
	Symbolic keyboard input codes. More...

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() [1/2]

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::~QwtPolarPicker ( )

virtual

Destructor.

Definition at line 51 of file qwt_polar_picker.cpp.

◆ QwtPolarPicker() [2/2]

QwtPolarPicker::QwtPolarPicker	(	RubberBand	rubberBand,
		DisplayMode	trackerMode,
		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

◆ append()

void QwtPolarPicker::append ( const QPoint & pos )

overrideprotectedvirtual

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.

◆ appended

void QwtPolarPicker::appended ( const QwtPointPolar & 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()

◆ canvas() [1/2]

QwtPolarCanvas * QwtPolarPicker::canvas ( )

Returns: Observed plot canvas

Definition at line 56 of file qwt_polar_picker.cpp.

◆ canvas() [2/2]

const QwtPolarCanvas * QwtPolarPicker::canvas ( ) const

Returns: Observed plot canvas

Definition at line 62 of file qwt_polar_picker.cpp.

◆ end()

bool QwtPolarPicker::end ( bool ok = true )

overrideprotectedvirtual

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.

Definition at line 157 of file qwt_polar_picker.cpp.

◆ invTransform()

QwtPointPolar QwtPolarPicker::invTransform ( const QPoint & pos ) const

protected

Translate a point from widget into plot coordinates

Parameters

pos	Point in widget coordinates of the plot canvas

Returns: Point in plot coordinates

See also: transform(), canvas()

Definition at line 208 of file qwt_polar_picker.cpp.

◆ move()

void QwtPolarPicker::move ( const QPoint & pos )

overrideprotectedvirtual

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.

◆ moved

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()

◆ pickArea()

QPainterPath QwtPolarPicker::pickArea ( ) const

overrideprivatevirtual

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

Returns: parentWidget()->contentsRect()

Reimplemented from QwtPicker.

Definition at line 229 of file qwt_polar_picker.cpp.

◆ pickRect()

QRect QwtPolarPicker::pickRect ( ) const

virtual

Returns: Bounding rectangle of the region, where picking is supported.

Definition at line 221 of file qwt_polar_picker.cpp.

◆ plot() [1/2]

QwtPolarPlot * QwtPolarPicker::plot ( )

Returns: Plot widget, containing the observed plot canvas

Definition at line 68 of file qwt_polar_picker.cpp.

◆ plot() [2/2]

const QwtPolarPlot * QwtPolarPicker::plot ( ) const

Returns: Plot widget, containing the observed plot canvas

Definition at line 78 of file qwt_polar_picker.cpp.

◆ selected [1/2]

void QwtPolarPicker::selected ( const QVector< QwtPointPolar > & points )

signal

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

Parameters

points Selected points

◆ selected [2/2]

void QwtPolarPicker::selected ( const QwtPointPolar & pos )

signal

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

Parameters

pos	Selected point

◆ trackerText()

QwtText QwtPolarPicker::trackerText ( const QPoint & pos ) const

overrideprotectedvirtual

Translate a pixel position into a position string

Parameters

pos	Position in pixel coordinates

Returns: Position string

Reimplemented from QwtPicker.

Definition at line 93 of file qwt_polar_picker.cpp.

◆ trackerTextPolar()

QwtText QwtPolarPicker::trackerTextPolar ( const QwtPointPolar & pos ) const

protectedvirtual

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

Definition at line 111 of file qwt_polar_picker.cpp.

Signals

Public Member Functions

Protected Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QwtPolarPicker() [1/2]

◆ ~QwtPolarPicker()

◆ QwtPolarPicker() [2/2]

Member Function Documentation

◆ append()

◆ appended

◆ canvas() [1/2]

◆ canvas() [2/2]

◆ end()

◆ invTransform()

◆ move()

◆ moved

◆ pickArea()

◆ pickRect()

◆ plot() [1/2]

◆ plot() [2/2]

◆ selected [1/2]

◆ selected [2/2]

◆ trackerText()

◆ trackerTextPolar()