#include <qwt_slider.h>

Inheritance diagram for QwtSlider:

Public Types
enum	BGSTYLE { BgTrough = 0x1, BgSlot = 0x2, BgBoth = BgTrough \| BgSlot }
enum	ScalePos { NoScale, LeftScale, RightScale, TopScale, BottomScale }
Public Types inherited from QwtAbstractSlider
enum	ScrollMode { ScrNone, ScrMouse, ScrTimer, ScrDirect, ScrPage }

Public Member Functions
	QwtSlider (QWidget *parent, Qt::Orientation=Qt::Horizontal, ScalePos=NoScale, BGSTYLE bgStyle=BgTrough)
BGSTYLE	bgStyle () const
int	borderWidth () const
virtual QSize	minimumSizeHint () const
const QwtScaleDraw *	scaleDraw () const
ScalePos	scalePosition () const
void	setBgStyle (BGSTYLE)
void	setBorderWidth (int bw)
void	setMargins (int x, int y)
virtual void	setOrientation (Qt::Orientation)
void	setScaleDraw (QwtScaleDraw *)
void	setScalePosition (ScalePos s)
void	setThumbLength (int l)
void	setThumbWidth (int w)
virtual QSize	sizeHint () const
int	thumbLength () const
int	thumbWidth () const
Public Member Functions inherited from QwtAbstractSlider
	QwtAbstractSlider (Qt::Orientation, QWidget *parent=NULL)
virtual	~QwtAbstractSlider ()
bool	isReadOnly () const
bool	isValid () const
virtual double	mass () const
Qt::Orientation	orientation () const
virtual void	setMass (double val)
void	setTracking (bool enable)
void	setUpdateTime (int t)
void	setValid (bool valid)
void	stopMoving ()
Public Member Functions inherited from QwtDoubleRange
	QwtDoubleRange ()
virtual	~QwtDoubleRange ()
virtual void	incPages (int)
double	maxValue () const
double	minValue () const
int	pageSize () const
bool	periodic () const
void	setPeriodic (bool tf)
void	setRange (double vmin, double vmax, double vstep=0.0, int pagesize=1)
void	setStep (double)
double	step () const
double	value () const
Public Member Functions inherited from QwtAbstractScale
	QwtAbstractScale ()
virtual	~QwtAbstractScale ()
bool	autoScale () const
const QwtScaleEngine *	scaleEngine () const
QwtScaleEngine *	scaleEngine ()
const QwtScaleMap &	scaleMap () const
int	scaleMaxMajor () const
int	scaleMaxMinor () const
void	setAutoScale ()
void	setScale (double vmin, double vmax, double step=0.0)
void	setScale (const QwtDoubleInterval &, double step=0.0)
void	setScale (const QwtScaleDiv &s)
void	setScaleEngine (QwtScaleEngine *)
void	setScaleMaxMajor (int ticks)
void	setScaleMaxMinor (int ticks)

Protected Member Functions
void	draw (QPainter *p, const QRect &update_rect)
virtual void	drawSlider (QPainter *p, const QRect &r)
virtual void	drawThumb (QPainter *p, const QRect &, int pos)
virtual void	fontChange (const QFont &oldFont)
virtual void	getScrollMode (const QPoint &p, int &scrollMode, int &direction)
virtual double	getValue (const QPoint &p)
void	layoutSlider (bool update=true)
virtual void	paintEvent (QPaintEvent *e)
virtual void	rangeChange ()
virtual void	resizeEvent (QResizeEvent *e)
virtual void	scaleChange ()
QwtScaleDraw *	scaleDraw ()
virtual void	valueChange ()
int	xyPosition (double v) const
Protected Member Functions inherited from QwtAbstractSlider
virtual void	keyPressEvent (QKeyEvent *e)
virtual void	mouseMoveEvent (QMouseEvent *e)
double	mouseOffset () const
virtual void	mousePressEvent (QMouseEvent *e)
virtual void	mouseReleaseEvent (QMouseEvent *e)
int	scrollMode () const
void	setMouseOffset (double)
virtual void	setPosition (const QPoint &)
virtual void	timerEvent (QTimerEvent *e)
virtual void	wheelEvent (QWheelEvent *e)
Protected Member Functions inherited from QwtDoubleRange
double	exactPrevValue () const
double	exactValue () const
double	prevValue () const
virtual void	stepChange ()
Protected Member Functions inherited from QwtAbstractScale
const QwtAbstractScaleDraw *	abstractScaleDraw () const
QwtAbstractScaleDraw *	abstractScaleDraw ()
void	rescale (double vmin, double vmax, double step=0.0)
void	setAbstractScaleDraw (QwtAbstractScaleDraw *)

Additional Inherited Members
Public Slots inherited from QwtAbstractSlider
virtual void	fitValue (double val)
virtual void	incValue (int steps)
virtual void	setReadOnly (bool)
virtual void	setValue (double val)
Signals inherited from QwtAbstractSlider
void	sliderMoved (double value)
void	sliderPressed ()
void	sliderReleased ()
void	valueChanged (double value)

Detailed Description

The Slider Widget.

QwtSlider is a slider widget which operates on an interval of type double. QwtSlider supports different layouts as well as a scale.

See also:: QwtAbstractSlider and QwtAbstractScale for the descriptions of the inherited members.

Member Enumeration Documentation

enum QwtSlider::BGSTYLE

Background style.

See also:: QwtSlider()

enum QwtSlider::ScalePos

Scale position. QwtSlider tries to enforce valid combinations of its orientation and scale position:

Qt::Horizonal combines with NoScale, TopScale and BottomScale
Qt::Vertical combines with NoScale, LeftScale and RightScale

See also:: QwtSlider()

Constructor & Destructor Documentation

QwtSlider::QwtSlider	(	QWidget *	parent,
		Qt::Orientation	orientation = `Qt::Horizontal`,
		ScalePos	scalePos = `NoScale`,
		BGSTYLE	bgStyle = `BgTrough`
	)

explicit

Constructor.

Parameters:

parent	parent widget
orientation	Orientation of the slider. Can be Qt::Horizontal or Qt::Vertical. Defaults to Qt::Horizontal.
scalePos	Position of the scale. Defaults to QwtSlider::NoScale.
bgStyle	Background style. QwtSlider::BgTrough draws the slider button in a trough, QwtSlider::BgSlot draws a slot underneath the button. An or-combination of both may also be used. The default is QwtSlider::BgTrough.

QwtSlider enforces valid combinations of its orientation and scale position. If the combination is invalid, the scale position will be set to NoScale. Valid combinations are:

Qt::Horizonal with NoScale, TopScale, or BottomScale;
Qt::Vertical with NoScale, LeftScale, or RightScale.

Member Function Documentation

QwtSlider::BGSTYLE QwtSlider::bgStyle ( ) const

Returns:: the background style.

int QwtSlider::borderWidth ( ) const

Returns:: the border width.

void QwtSlider::drawSlider	(	QPainter *	painter,
		const QRect &	r
	)

protectedvirtual

Draw the slider into the specified rectangle.

Parameters:

painter	Painter
r	Rectangle

void QwtSlider::drawThumb	(	QPainter *	painter,
		const QRect &	sliderRect,
		int	pos
	)

protectedvirtual

Draw the thumb at a position

Parameters:

painter	Painter
sliderRect	Bounding rectangle of the slider
pos	Position of the slider thumb

void QwtSlider::getScrollMode	(	const QPoint &	p,
		int &	scrollMode,
		int &	direction
	)

protectedvirtual

Determine scrolling mode and direction.

Parameters:

p	point
scrollMode	Scrolling mode
direction	Direction

Implements QwtAbstractSlider.

double QwtSlider::getValue ( const QPoint & pos )

protectedvirtual

Determine the value corresponding to a specified mouse location.

Parameters:

pos	Mouse position

Implements QwtAbstractSlider.

void QwtSlider::layoutSlider ( bool update_geometry = true )

protected

Recalculate the slider's geometry and layout based on the current rect and fonts.

Parameters:

update_geometry notify the layout system and call update to redraw the scale

QSize QwtSlider::minimumSizeHint ( ) const

virtual

Return a minimum size hint.

Warning:: The return value of QwtSlider::minimumSizeHint() depends on the font and the scale.

void QwtSlider::paintEvent ( QPaintEvent * event )

protectedvirtual

Qt paint event

Parameters:

event Paint event

const QwtScaleDraw * QwtSlider::scaleDraw ( ) const

Returns:: the scale draw of the slider

See also:: setScaleDraw()

QwtScaleDraw * QwtSlider::scaleDraw ( )

protected

Returns:: the scale draw of the slider

See also:: setScaleDraw()

void QwtSlider::setBgStyle ( BGSTYLE st )

Set the background style.

void QwtSlider::setBorderWidth ( int bd )

Change the slider's border width.

Parameters:

bd	border width

void QwtSlider::setMargins	(	int	xMargin,
		int	yMargin
	)

Set distances between the widget's border and internals.

Parameters:

xMargin	Horizontal margin
yMargin	Vertical margin

void QwtSlider::setOrientation ( Qt::Orientation o )

virtual

Set the orientation.

Parameters:

o	Orientation. Allowed values are Qt::Horizontal and Qt::Vertical.

If the new orientation and the old scale position are an invalid combination, the scale position will be set to QwtSlider::NoScale.

See also:: QwtAbstractSlider::orientation()

Reimplemented from QwtAbstractSlider.

void QwtSlider::setScaleDraw ( QwtScaleDraw * scaleDraw )

Set a scale draw.

For changing the labels of the scales, it is necessary to derive from QwtScaleDraw and overload QwtScaleDraw::label().

Parameters:

scaleDraw ScaleDraw object, that has to be created with new and will be deleted in ~QwtSlider or the next call of setScaleDraw().

void QwtSlider::setScalePosition ( ScalePos s )

Change the scale position (and slider orientation).

Parameters:

s	Position of the scale.

A valid combination of scale position and orientation is enforced:

if the new scale position is Left or Right, the scale orientation will become Qt::Vertical;
if the new scale position is Bottom or Top the scale orientation will become Qt::Horizontal;
if the new scale position is QwtSlider::NoScale, the scale orientation will not change.

void QwtSlider::setThumbLength ( int thumbLength )

Set the slider's thumb length.

Parameters:

thumbLength new length

void QwtSlider::setThumbWidth ( int w )

Change the width of the thumb.

Parameters:

w new width

QSize QwtSlider::sizeHint ( ) const

virtual

Returns:: QwtSlider::minimumSizeHint()

int QwtSlider::thumbLength ( ) const

Returns:: the thumb length.

int QwtSlider::thumbWidth ( ) const

Returns:: the thumb width.

int QwtSlider::xyPosition ( double value ) const

protected

Find the x/y position for a given value v

Parameters:

value Value

Public Types

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation