A Compass Widget. More...

#include <qwt_compass.h>

Inheritance diagram for QwtCompass:

[legend]

Classes
class	PrivateData

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

QwtCompassRose *	rose ()

const QwtCompassRose *	rose () const

void	setRose (QwtCompassRose *rose)

virtual	~QwtCompass ()
	Destructor. More...

Public Member Functions inherited from QwtDial
QRect	boundingRect () const

Shadow	frameShadow () const

QRect	innerRect () const

int	lineWidth () const

double	maxScaleArc () const

virtual QSize	minimumSizeHint () const QWT_OVERRIDE

double	minScaleArc () const

Mode	mode () const

QwtDialNeedle *	needle ()

const QwtDialNeedle *	needle () const

double	origin () const

	QwtDial (QWidget *parent=NULL)
	Constructor. More...

QwtRoundScaleDraw *	scaleDraw ()

const QwtRoundScaleDraw *	scaleDraw () const

virtual QRect	scaleInnerRect () const

void	setFrameShadow (Shadow)

void	setLineWidth (int)

void	setMaxScaleArc (double)

void	setMinScaleArc (double)

void	setMode (Mode)
	Change the mode of the dial. More...

void	setNeedle (QwtDialNeedle *)

virtual void	setOrigin (double)
	Change the origin. More...

void	setScaleArc (double minArc, double maxArc)

void	setScaleDraw (QwtRoundScaleDraw *)

virtual QSize	sizeHint () const QWT_OVERRIDE

virtual	~QwtDial ()
	Destructor. More...

Public Member Functions inherited from QwtAbstractSlider
bool	invertedControls () const

bool	isReadOnly () const

bool	isTracking () const

bool	isValid () const

uint	pageSteps () const

	QwtAbstractSlider (QWidget *parent=NULL)
	Constructor. More...

void	setInvertedControls (bool)

void	setPageSteps (uint)
	Set the number of steps for a page increment. More...

void	setReadOnly (bool)

void	setSingleSteps (uint)
	Set the number of steps for a single increment. More...

void	setStepAlignment (bool)
	Enable step alignment. More...

void	setTotalSteps (uint)
	Set the number of steps. More...

void	setTracking (bool)
	Enables or disables tracking. More...

void	setValid (bool)

void	setWrapping (bool)

uint	singleSteps () const

bool	stepAlignment () const

uint	totalSteps () const

double	value () const

bool	wrapping () const

virtual	~QwtAbstractSlider ()
	Destructor. More...

Public Member Functions inherited from QwtAbstractScale
double	invTransform (int) const

bool	isInverted () const

double	lowerBound () const

double	maximum () const

double	minimum () const

	QwtAbstractScale (QWidget *parent=NULL)

const QwtScaleDiv &	scaleDiv () const

QwtScaleEngine *	scaleEngine ()

const QwtScaleEngine *	scaleEngine () const

const QwtScaleMap &	scaleMap () const

int	scaleMaxMajor () const

int	scaleMaxMinor () const

double	scaleStepSize () const

void	setLowerBound (double value)

void	setScale (const QwtInterval &)
	Specify a scale. More...

void	setScale (const QwtScaleDiv &)
	Specify a scale. More...

void	setScale (double lowerBound, double upperBound)
	Specify a scale. More...

void	setScaleEngine (QwtScaleEngine *)
	Set a scale engine. More...

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

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

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

void	setUpperBound (double value)

int	transform (double) const

double	upperBound () const

virtual	~QwtAbstractScale ()
	Destructor. More...

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

virtual void	drawScaleContents (QPainter *, const QPointF &center, double radius) const QWT_OVERRIDE

virtual void	keyPressEvent (QKeyEvent *) QWT_OVERRIDE

Protected Member Functions inherited from QwtDial
virtual void	changeEvent (QEvent *) QWT_OVERRIDE

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

virtual void	drawFocusIndicator (QPainter *) const

virtual void	drawFrame (QPainter *)

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

virtual void	drawScale (QPainter *, const QPointF &center, double radius) const

void	invalidateCache ()

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

virtual void	paintEvent (QPaintEvent *) QWT_OVERRIDE

virtual void	scaleChange () QWT_OVERRIDE

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

virtual void	sliderChange () QWT_OVERRIDE
	Calling update() More...

virtual void	wheelEvent (QWheelEvent *) QWT_OVERRIDE

Protected Member Functions inherited from QwtAbstractSlider
double	incrementedValue (double value, int stepCount) const

void	incrementValue (int stepCount)

virtual void	mouseMoveEvent (QMouseEvent *) QWT_OVERRIDE

virtual void	mousePressEvent (QMouseEvent *) QWT_OVERRIDE

virtual void	mouseReleaseEvent (QMouseEvent *) QWT_OVERRIDE

Protected Member Functions inherited from QwtAbstractScale
QwtAbstractScaleDraw *	abstractScaleDraw ()

const QwtAbstractScaleDraw *	abstractScaleDraw () const

void	rescale (double lowerBound, double upperBound, double stepSize)

void	setAbstractScaleDraw (QwtAbstractScaleDraw *)
	Set a scale draw. More...

void	updateScaleDraw ()

Private Attributes
PrivateData *	m_data

Additional Inherited Members
Public Types inherited from QwtDial
enum	Mode { RotateNeedle, RotateScale }
	Mode controlling whether the needle or the scale is rotating. More...

enum	Shadow { Plain = QFrame::Plain, Raised = QFrame::Raised, Sunken = QFrame::Sunken }
	Frame shadow. More...

Public Slots inherited from QwtAbstractSlider
void	setValue (double value)

Signals inherited from QwtAbstractSlider
void	sliderMoved (double value)

void	sliderPressed ()

void	sliderReleased ()

void	valueChanged (double value)
	Notify a change of value. More...

Properties inherited from QwtDial
Shadow	frameShadow

int	lineWidth

double	maxScaleArc

double	minScaleArc

Mode	mode

double	origin

Properties inherited from QwtAbstractSlider
bool	invertedControls

uint	pageSteps

bool	readOnly

uint	singleSteps

bool	stepAlignment

uint	totalSteps

bool	tracking

double	value
	Returns the current value. More...

bool	wrapping

Properties inherited from QwtAbstractScale
double	lowerBound

int	scaleMaxMajor

int	scaleMaxMinor

double	scaleStepSize

double	upperBound

Detailed Description

A Compass Widget.

QwtCompass is a widget to display and enter directions. It consists of a scale, an optional needle and rose.

Note: The examples/dials example shows how to use QwtCompass.

Definition at line 61 of file qwt_compass.h.

Constructor & Destructor Documentation

◆ QwtCompass()

QwtCompass::QwtCompass ( QWidget * parent = NULL )

explicit

Constructor.

Parameters

parent Parent widget

Create a compass widget with a scale, no needle and no rose. The default origin is 270.0 with no valid value. It accepts mouse and keyboard inputs and has no step size. The default mode is QwtDial::RotateNeedle.

Definition at line 158 of file qwt_compass.cpp.

◆ ~QwtCompass()

QwtCompass::~QwtCompass ( )

virtual

Destructor.

Definition at line 176 of file qwt_compass.cpp.

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

Definition at line 218 of file qwt_compass.cpp.

◆ drawScaleContents()

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

protectedvirtual

Draw the contents of the scale

Parameters

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

Reimplemented from QwtDial.

Definition at line 189 of file qwt_compass.cpp.

◆ keyPressEvent()

void QwtCompass::keyPressEvent ( QKeyEvent * kev )

protectedvirtual

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.

Definition at line 271 of file qwt_compass.cpp.

◆ rose() [1/2]

QwtCompassRose* QwtCompass::rose ( )

◆ rose() [2/2]

QwtCompassRose * QwtCompass::rose ( ) const

Returns: rose

See also: setRose()

Definition at line 248 of file qwt_compass.cpp.

◆ setRose()

void QwtCompass::setRose ( QwtCompassRose * rose )

Set a rose for the compass

Parameters

rose	Compass rose

Warning: The rose will be deleted, when a different rose is set or in ~QwtCompass

See also: rose()

Definition at line 232 of file qwt_compass.cpp.

Member Data Documentation

◆ m_data

PrivateData* QwtCompass::m_data

private

Definition at line 83 of file qwt_compass.h.

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

Classes

Public Member Functions

Protected Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QwtCompass()

◆ ~QwtCompass()

Member Function Documentation

◆ drawRose()

◆ drawScaleContents()

◆ keyPressEvent()

◆ rose() [1/2]

◆ rose() [2/2]

◆ setRose()

Member Data Documentation

◆ m_data