A Compass Widget. More...

#include <qwt_compass.h>

Inheritance diagram for QwtCompass:

Classes
class	PrivateData

Public Member Functions
	QwtCompass (QWidget *parent=nullptr)
	Constructor.

virtual	~QwtCompass ()
	Destructor .

void	setRose (QwtCompassRose *rose)
	Set a rose for the compass.

const QwtCompassRose *	rose () const
	Get the compass rose.

QwtCompassRose *	rose ()
	Get the compass rose.

Public Member Functions inherited from QwtDial
	QwtDial (QWidget *parent=nullptr)
	Constructor.

virtual	~QwtDial ()
	Destructor.

void	setFrameShadow (Shadow)
	Set the frame shadow.

Shadow	frameShadow () const
	Return the frame shadow.

void	setLineWidth (int)
	Set the line width.

int	lineWidth () const
	Return the line width.

void	setMode (Mode)
	Set the mode.

Mode	mode () const
	Return the mode.

void	setScaleArc (double minArc, double maxArc)
	Set the scale arc range.

void	setMinScaleArc (double)
	Set the minimum scale arc.

double	minScaleArc () const
	Return the minimum scale arc.

void	setMaxScaleArc (double)
	Set the maximum scale arc.

double	maxScaleArc () const
	Return the maximum scale arc.

virtual void	setOrigin (double)
	Set the origin.

double	origin () const
	Return the origin.

void	setNeedle (QwtDialNeedle *)
	Set the needle.

const QwtDialNeedle *	needle () const
	Return the needle (const version)

QwtDialNeedle *	needle ()
	Return the needle.

QRect	boundingRect () const
	Return the bounding rectangle.

QRect	innerRect () const
	Return the inner rectangle.

virtual QRect	scaleInnerRect () const
	Return the scale inner rectangle.

virtual QSize	sizeHint () const override
	Return the size hint.

virtual QSize	minimumSizeHint () const override
	Return the minimum size hint.

void	setScaleDraw (QwtRoundScaleDraw *)
	Set the scale draw.

QwtRoundScaleDraw *	scaleDraw ()
	Return the scale draw.

const QwtRoundScaleDraw *	scaleDraw () const
	Return the scale draw (const version)

Public Member Functions inherited from QwtAbstractSlider
	QwtAbstractSlider (QWidget *parent=nullptr)
	Constructor for QwtAbstractSlider (English only)

virtual	~QwtAbstractSlider ()
	Destructor for QwtAbstractSlider (English only)

void	setValid (bool)
	Set whether the slider is valid (English only)

bool	isValid () const
	Return whether the slider is valid (English only)

double	value () const
	Return the current value (English only)

void	setWrapping (bool)
	Set whether wrapping is enabled (English only)

bool	wrapping () const
	Return whether wrapping is enabled (English only)

void	setTotalSteps (uint)
	Set the total number of steps (English only)

uint	totalSteps () const
	Return the total number of steps (English only)

void	setSingleSteps (uint)
	Set the number of single steps (English only)

uint	singleSteps () const
	Return the number of single steps (English only)

void	setPageSteps (uint)
	Set the number of page steps (English only)

uint	pageSteps () const
	Return the number of page steps (English only)

void	setStepAlignment (bool)
	Set whether step alignment is enabled (English only)

bool	stepAlignment () const
	Return whether step alignment is enabled (English only)

void	setTracking (bool)
	Set whether tracking is enabled (English only)

bool	isTracking () const
	Return whether tracking is enabled (English only)

void	setReadOnly (bool)
	Set whether the slider is read-only (English only)

bool	isReadOnly () const
	Return whether the slider is read-only (English only)

void	setInvertedControls (bool)
	Set whether controls are inverted (English only)

bool	invertedControls () const
	Return whether controls are inverted (English only)

Public Member Functions inherited from QwtAbstractScale
	QwtAbstractScale (QWidget *parent=nullptr)
	Constructor for QwtAbstractScale.

virtual	~QwtAbstractScale ()
	Destructor for QwtAbstractScale .

void	setScale (double lowerBound, double upperBound)
	Specify a scale by interval bounds.

void	setScale (const QwtInterval &)
	Specify a scale by interval.

void	setScale (const QwtScaleDiv &)
	Specify a scale by scale division.

const QwtScaleDiv &	scaleDiv () const
	Return the scale division.

void	setLowerBound (double value)
	Set the lower bound of the scale.

double	lowerBound () const
	Return the lower bound of the scale.

void	setUpperBound (double value)
	Set the upper bound of the scale.

double	upperBound () const
	Return the upper bound of the scale.

void	setScaleStepSize (double stepSize)
	Set the step size used for calculating scale division.

double	scaleStepSize () const
	Return the step size hint.

void	setScaleMaxMajor (int ticks)
	Set the maximum number of major tick intervals.

int	scaleMaxMinor () const
	Return the maximum number of minor tick intervals.

void	setScaleMaxMinor (int ticks)
	Set the maximum number of minor tick intervals.

int	scaleMaxMajor () const
	Return the maximum number of major tick intervals.

void	setScaleEngine (QwtScaleEngine *)
	Set the scale engine.

const QwtScaleEngine *	scaleEngine () const
	Return the scale engine (const version)

QwtScaleEngine *	scaleEngine ()
	Return the scale engine (non-const version)

int	transform (double) const
	Transform a scale value to widget coordinates.

double	invTransform (int) const
	Transform a widget coordinate to scale value.

bool	isInverted () const
	Check if scale is inverted.

double	minimum () const
	Return the minimum boundary.

double	maximum () const
	Return the maximum boundary.

const QwtScaleMap &	scaleMap () const
	Return the scale map.

Protected Member Functions
virtual void	drawRose (QPainter *, const QPointF &center, double radius, double north, QPalette::ColorGroup) const
	Draw the compass rose.

virtual void	drawScaleContents (QPainter *, const QPointF &center, double radius) const override
	Draw the contents of the scale.

virtual void	keyPressEvent (QKeyEvent *) override
	Handles key events.

Protected Member Functions inherited from QwtDial
virtual void	wheelEvent (QWheelEvent *) override
	Wheel Event handler.

virtual void	paintEvent (QPaintEvent *) override
	Paint the dial.

virtual void	changeEvent (QEvent *) override
	Change Event handler.

virtual void	drawFrame (QPainter *)
	Draw the frame around the dial.

virtual void	drawContents (QPainter *) const
	Draw the contents inside the frame.

virtual void	drawFocusIndicator (QPainter *) const
	Draw the focus indicator.

void	invalidateCache ()
	Invalidate the internal caches used to speed up repainting .

virtual void	drawScale (QPainter *, const QPointF &center, double radius) const
	Draw the scale.

virtual void	drawNeedle (QPainter *, const QPointF &, double radius, double direction, QPalette::ColorGroup) const
	Draw the needle.

virtual double	scrolledTo (const QPoint &) const override
	Determine the value for a new position of the slider handle.

virtual bool	isScrollPosition (const QPoint &) const override
	Determine what to do when the user presses a mouse button.

virtual void	sliderChange () override
	Handle slider changes (English only)

virtual void	scaleChange () override
	Invalidate the internal caches and call QwtAbstractSlider::scaleChange()

Protected Member Functions inherited from QwtAbstractSlider
virtual void	mousePressEvent (QMouseEvent *) override
	Handle mouse press events (English only)

virtual void	mouseReleaseEvent (QMouseEvent *) override
	Handle mouse release events (English only)

virtual void	mouseMoveEvent (QMouseEvent *) override
	Handle mouse move events (English only)

void	incrementValue (int stepCount)
	Increment the value by a number of steps (English only)

double	incrementedValue (double value, int stepCount) const
	Calculate incremented value (English only)

Protected Member Functions inherited from QwtAbstractScale
void	rescale (double lowerBound, double upperBound, double stepSize)
	Recalculate scale and update scale draw (English only)

void	setAbstractScaleDraw (QwtAbstractScaleDraw *)
	Set the scale draw object (English only)

const QwtAbstractScaleDraw *	abstractScaleDraw () const
	Return the scale draw (const version) (English only)

QwtAbstractScaleDraw *	abstractScaleDraw ()
	Return the scale draw (non-const version) (English only)

void	updateScaleDraw ()
	Update the scale draw (English only)

Additional Inherited Members
Public Types inherited from QwtDial
enum	Shadow { Plain = QFrame::Plain , Raised = QFrame::Raised , Sunken = QFrame::Sunken }
	Frame shadow. More...

enum	Mode { RotateNeedle , RotateScale }
	Mode controlling whether the needle or the scale is rotating . More...

Public Slots inherited from QwtAbstractSlider
void	setValue (double value)
	Set the slider value (English only)

Signals inherited from QwtAbstractSlider
void	valueChanged (double value)
	Notify a change of value.

void	sliderPressed ()
	Signal emitted when the user presses the movable part of the slider .

void	sliderReleased ()
	Signal emitted when the user releases the movable part of the slider .

void	sliderMoved (double value)
	Signal emitted when the user moves the slider with the mouse.

Properties inherited from QwtDial
int	lineWidth

Shadow	frameShadow

Mode	mode

double	origin

double	minScaleArc

double	maxScaleArc

Properties inherited from QwtAbstractSlider
double	value

uint	totalSteps

uint	singleSteps

uint	pageSteps

bool	stepAlignment

bool	readOnly

bool	tracking

bool	wrapping

bool	invertedControls

Properties inherited from QwtAbstractScale
double	lowerBound

double	upperBound

int	scaleMaxMajor

int	scaleMaxMinor

double	scaleStepSize

Detailed Description

A Compass Widget.

Constructor & Destructor Documentation

◆ QwtCompass()

QwtCompass::QwtCompass ( QWidget * parent = nullptr )

explicit

Constructor.

◆ ~QwtCompass()

QwtCompass::~QwtCompass ( )

virtual

Destructor .

Member Function Documentation

◆ drawRose()

void QwtCompass::drawRose	(	QPainter *	painter,
		const QPointF &	center,
		double	radius,
		double	north,
		QPalette::ColorGroup	cg
	)		const

protectedvirtual

Draw the compass rose.

Parameters

painter	Painter
center	Center of the compass
radius	of the circle, where to paint the rose
north	Direction pointing north, in degrees counter clockwise
cg	Color group

◆ drawScaleContents()

void QwtCompass::drawScaleContents	(	QPainter *	painter,
		const QPointF &	center,
		double	radius
	)		const

overrideprotectedvirtual

Draw the contents of the scale.

Parameters

painter	Painter
center	Center of the content circle
radius	Radius of the content circle

Reimplemented from QwtDial.

◆ keyPressEvent()

void QwtCompass::keyPressEvent ( QKeyEvent * kev )

overrideprotectedvirtual

Handles key events.

Beside the keys described in QwtDial::keyPressEvent numbers from 1-9 (without 5) set the direction according to their position on the num pad.

See also: isReadOnly()

Reimplemented from QwtAbstractSlider.

◆ rose() [1/2]

QwtCompassRose * QwtCompass::rose ( )

Get the compass rose.

Returns: The compass rose

See also: setRose()

◆ rose() [2/2]

const QwtCompassRose * QwtCompass::rose ( ) const

Get the compass rose.

Returns: The compass rose (const version)

See also: setRose()

◆ setRose()

void QwtCompass::setRose ( QwtCompassRose * rose )

Set a rose for the compass.

The documentation for this class was generated from the following files:

/home/runner/work/QWT/QWT/src/plot/qwt_compass.h
/home/runner/work/QWT/QWT/src/plot/qwt_compass.cpp

Classes

Public Member Functions

Protected Member Functions

Additional Inherited Members