The Thermometer Widget. More...

#include <qwt_thermo.h>

Inheritance diagram for QwtThermo:

Classes
class	PrivateData

Public Types
enum	OriginMode { OriginMinimum, OriginMaximum, OriginCustom }

enum	ScalePosition { NoScale, LeadingScale, TrailingScale }

Public Slots
virtual void	setValue (double)

Public Member Functions
QBrush	alarmBrush () const

bool	alarmEnabled () const

double	alarmLevel () const

int	borderWidth () const

QwtColorMap *	colorMap ()

const QwtColorMap *	colorMap () const

QBrush	fillBrush () const

virtual QSize	minimumSizeHint () const QWT_OVERRIDE

Qt::Orientation	orientation () const

double	origin () const

OriginMode	originMode () const

int	pipeWidth () const

	QwtThermo (QWidget *parent=NULL)

QwtInterval::BorderFlags	rangeFlags () const

const QwtScaleDraw *	scaleDraw () const

ScalePosition	scalePosition () const

void	setAlarmBrush (const QBrush &)
	Specify the liquid brush above the alarm threshold. More...

void	setAlarmEnabled (bool)
	Enable or disable the alarm threshold. More...

void	setAlarmLevel (double)

void	setBorderWidth (int)

void	setColorMap (QwtColorMap *)
	Assign a color map for the fill color. More...

void	setFillBrush (const QBrush &)
	Change the brush of the liquid. More...

void	setOrientation (Qt::Orientation)
	Set the orientation. More...

void	setOrigin (double)
	Specifies the custom origin. More...

void	setOriginMode (OriginMode)
	Change how the origin is determined. More...

void	setPipeWidth (int)

void	setRangeFlags (QwtInterval::BorderFlags)
	Exclude/Include min/max values. More...

void	setScaleDraw (QwtScaleDraw *)
	Set a scale draw. More...

void	setScalePosition (ScalePosition)
	Change the position of the scale. More...

void	setSpacing (int)
	Change the spacing between pipe and scale. More...

virtual QSize	sizeHint () const QWT_OVERRIDE

int	spacing () const

double	value () const

virtual	~QwtThermo ()
	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
QRect	alarmRect (const QRect &) const
	Calculate the alarm rectangle of the pipe. More...

virtual void	changeEvent (QEvent *) QWT_OVERRIDE

virtual void	drawLiquid (QPainter *, const QRect &) const

QRect	fillRect (const QRect &) const
	Calculate the filled rectangle of the pipe. More...

virtual void	paintEvent (QPaintEvent *) QWT_OVERRIDE

QRect	pipeRect () const

virtual void	resizeEvent (QResizeEvent *) QWT_OVERRIDE

virtual void	scaleChange () QWT_OVERRIDE
	Notify a scale change. More...

QwtScaleDraw *	scaleDraw ()

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 ()

Properties
bool	alarmEnabled

double	alarmLevel

int	borderWidth

Qt::Orientation	orientation

double	origin

OriginMode	originMode

int	pipeWidth

ScalePosition	scalePosition

int	spacing

double	value
	Return the value. More...

Properties inherited from QwtAbstractScale
double	lowerBound

int	scaleMaxMajor

int	scaleMaxMinor

double	scaleStepSize

double	upperBound

Private Member Functions
void	layoutThermo (bool)

Private Attributes
PrivateData *	m_data

Detailed Description

The Thermometer Widget.

QwtThermo is a widget which displays a value in an interval. It supports:

a horizontal or vertical layout;
a range;
a scale;
an alarm level.

The fill colors might be calculated from an optional color map If no color map has been assigned QwtThermo uses the following colors/brushes from the widget palette:

QPalette::Base Background of the pipe
QPalette::ButtonText Fill brush below the alarm level
QPalette::Highlight Fill brush for the values above the alarm level
QPalette::WindowText For the axis of the scale
QPalette::Text For the labels of the scale

Definition at line 46 of file qwt_thermo.h.

Member Enumeration Documentation

◆ OriginMode

enum QwtThermo::OriginMode

Origin mode. This property specifies where the beginning of the liquid is placed.

See also: setOriginMode(), setOrigin()

Enumerator
OriginMinimum	The origin is the minimum of the scale.
OriginMaximum	The origin is the maximum of the scale.
OriginCustom	The origin is specified using the origin() property.

Definition at line 91 of file qwt_thermo.h.

◆ ScalePosition

enum QwtThermo::ScalePosition

Position of the scale

See also: setScalePosition(), setOrientation()

Enumerator
NoScale	The slider has no scale.
LeadingScale	The scale is right of a vertical or below of a horizontal slider.
TrailingScale	The scale is left of a vertical or above of a horizontal slider.

Definition at line 73 of file qwt_thermo.h.

Constructor & Destructor Documentation

◆ QwtThermo()

QwtThermo::QwtThermo ( QWidget * parent = NULL )

explicit

Constructor

Parameters

parent Parent widget

Definition at line 121 of file qwt_thermo.cpp.

◆ ~QwtThermo()

QwtThermo::~QwtThermo ( )

virtual

Destructor.

Definition at line 137 of file qwt_thermo.cpp.

Member Function Documentation

◆ alarmBrush()

QBrush QwtThermo::alarmBrush ( ) const

Returns: Liquid brush ( QPalette::Highlight ) above the alarm threshold.

See also: setAlarmBrush(), QWidget::palette()

Warning: The alarm threshold has no effect, when a color map has been assigned

Definition at line 761 of file qwt_thermo.cpp.

◆ alarmEnabled()

bool QwtThermo::alarmEnabled ( ) const

◆ alarmLevel()

double QwtThermo::alarmLevel ( ) const

◆ alarmRect()

QRect QwtThermo::alarmRect ( const QRect & fillRect ) const

protected

Calculate the alarm rectangle of the pipe.

Parameters

fillRect Filled rectangle in the pipe

Returns: Rectangle to be filled with the alarm brush

See also: pipeRect(), fillRect(), alarmLevel(), alarmBrush()

Definition at line 944 of file qwt_thermo.cpp.

◆ borderWidth()

int QwtThermo::borderWidth ( ) const

◆ changeEvent()

void QwtThermo::changeEvent ( QEvent * event )

protectedvirtual

Qt change event handler

Parameters

event Event

Reimplemented from QwtAbstractScale.

Definition at line 277 of file qwt_thermo.cpp.

◆ colorMap() [1/2]

const QwtColorMap * QwtThermo::colorMap ( )

Returns: Color map for the fill color

Warning: The alarm threshold has no effect, when a color map has been assigned

Definition at line 697 of file qwt_thermo.cpp.

◆ colorMap() [2/2]

const QwtColorMap* QwtThermo::colorMap ( ) const

◆ drawLiquid()

void QwtThermo::drawLiquid	(	QPainter *	painter,
		const QRect &	pipeRect
	)		const

protectedvirtual

Redraw the liquid in thermometer pipe.

Parameters

painter	Painter
pipeRect	Bounding rectangle of the pipe without borders

Definition at line 546 of file qwt_thermo.cpp.

◆ fillBrush()

QBrush QwtThermo::fillBrush ( ) const

Returns: Liquid ( QPalette::ButtonText ) brush.

See also: setFillBrush(), QWidget::palette()

Definition at line 731 of file qwt_thermo.cpp.

◆ fillRect()

QRect QwtThermo::fillRect ( const QRect & pipeRect ) const

protected

Calculate the filled rectangle of the pipe.

Parameters

pipeRect Rectangle of the pipe

Returns: Rectangle to be filled ( fill and alarm brush )

See also: pipeRect(), alarmRect()

Definition at line 897 of file qwt_thermo.cpp.

◆ layoutThermo()

void QwtThermo::layoutThermo ( bool update_geometry )

private

Recalculate the QwtThermo geometry and layout based on pipeRect() and the fonts.

Parameters

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

Definition at line 299 of file qwt_thermo.cpp.

◆ minimumSizeHint()

QSize QwtThermo::minimumSizeHint ( ) const

virtual

Returns: Minimum size hint

Warning: The return value depends on the font and the scale.

See also: sizeHint()

Definition at line 856 of file qwt_thermo.cpp.

◆ orientation()

Qt::Orientation QwtThermo::orientation ( ) const

◆ origin()

double QwtThermo::origin ( ) const

◆ originMode()

OriginMode QwtThermo::originMode ( ) const

◆ paintEvent()

void QwtThermo::paintEvent ( QPaintEvent * event )

protectedvirtual

Paint event handler

Parameters

event Paint event

Definition at line 235 of file qwt_thermo.cpp.

◆ pipeRect()

QRect QwtThermo::pipeRect ( ) const

protected

Returns: Bounding rectangle of the pipe ( without borders ) in widget coordinates

Definition at line 385 of file qwt_thermo.cpp.

◆ pipeWidth()

int QwtThermo::pipeWidth ( ) const

◆ rangeFlags()

QwtInterval::BorderFlags QwtThermo::rangeFlags ( ) const

Returns: Range flags

See also: setRangeFlags()

Definition at line 170 of file qwt_thermo.cpp.

◆ resizeEvent()

void QwtThermo::resizeEvent ( QResizeEvent * event )

protectedvirtual

Resize event handler

Parameters

event Resize event

Definition at line 267 of file qwt_thermo.cpp.

◆ scaleChange()

void QwtThermo::scaleChange ( )

protectedvirtual

Notify a scale change.

Reimplemented from QwtAbstractScale.

Definition at line 536 of file qwt_thermo.cpp.

◆ scaleDraw() [1/2]

QwtScaleDraw* QwtThermo::scaleDraw ( )

protected

◆ scaleDraw() [2/2]

QwtScaleDraw * QwtThermo::scaleDraw ( ) const

Returns: the scale draw of the thermo

See also: setScaleDraw()

Definition at line 217 of file qwt_thermo.cpp.

◆ scalePosition()

ScalePosition QwtThermo::scalePosition ( ) const

◆ setAlarmBrush()

void QwtThermo::setAlarmBrush ( const QBrush & brush )

Specify the liquid brush above the alarm threshold.

Changes the QPalette::Highlight brush of the palette.

Parameters

brush New brush.

See also: alarmBrush(), QWidget::setPalette()

Warning: The alarm threshold has no effect, when a color map has been assigned

Definition at line 747 of file qwt_thermo.cpp.

◆ setAlarmEnabled()

void QwtThermo::setAlarmEnabled ( bool on )

Enable or disable the alarm threshold.

Parameters

on	true (disabled) or false (enabled)

Warning: The alarm threshold has no effect, when a color map has been assigned

Definition at line 825 of file qwt_thermo.cpp.

◆ setAlarmLevel()

void QwtThermo::setAlarmLevel ( double level )

Specify the alarm threshold.

Parameters

level Alarm threshold

See also: alarmLevel()

Warning: The alarm threshold has no effect, when a color map has been assigned

Definition at line 775 of file qwt_thermo.cpp.

◆ setBorderWidth()

void QwtThermo::setBorderWidth ( int width )

Set the border width of the pipe.

Parameters

width Border width

See also: borderWidth()

Definition at line 655 of file qwt_thermo.cpp.

◆ setColorMap()

void QwtThermo::setColorMap ( QwtColorMap * colorMap )

Assign a color map for the fill color.

Parameters

colorMap Color map

Warning: The alarm threshold has no effect, when a color map has been assigned

Definition at line 683 of file qwt_thermo.cpp.

◆ setFillBrush()

void QwtThermo::setFillBrush ( const QBrush & brush )

Change the brush of the liquid.

Changes the QPalette::ButtonText brush of the palette.

Parameters

brush New brush.

See also: fillBrush(), QWidget::setPalette()

Definition at line 720 of file qwt_thermo.cpp.

◆ setOrientation()

void QwtThermo::setOrientation ( Qt::Orientation orientation )

Set the orientation.

Parameters

orientation Allowed values are Qt::Horizontal and Qt::Vertical.

See also: orientation(), scalePosition()

Definition at line 432 of file qwt_thermo.cpp.

◆ setOrigin()

void QwtThermo::setOrigin ( double origin )

Specifies the custom origin.

If originMode is set to OriginCustom this property controls where the liquid starts.

Parameters

origin New origin level

See also: setOriginMode(), originMode(), origin()

Definition at line 491 of file qwt_thermo.cpp.

◆ setOriginMode()

void QwtThermo::setOriginMode ( OriginMode m )

Change how the origin is determined.

See also: originMode(), serOrigin(), origin()

Definition at line 464 of file qwt_thermo.cpp.

◆ setPipeWidth()

void QwtThermo::setPipeWidth ( int width )

Change the width of the pipe.

Parameters

width Width of the pipe

See also: pipeWidth()

Definition at line 800 of file qwt_thermo.cpp.

◆ setRangeFlags()

void QwtThermo::setRangeFlags ( QwtInterval::BorderFlags flags )

Exclude/Include min/max values.

According to the flags minValue() and maxValue() are included/excluded from the pipe. In case of an excluded value the corresponding tick is painted 1 pixel off of the pipeRect().

F.e. when a minimum of 0.0 has to be displayed as an empty pipe the minValue() needs to be excluded.

Parameters

flags Range flags

See also: rangeFlags()

Definition at line 157 of file qwt_thermo.cpp.

◆ setScaleDraw()

void QwtThermo::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 ~QwtThermo() or the next call of setScaleDraw().

Definition at line 207 of file qwt_thermo.cpp.

◆ setScalePosition()

void QwtThermo::setScalePosition ( ScalePosition scalePosition )

Change the position of the scale.

Parameters

scalePosition Position of the scale.

See also: ScalePosition, scalePosition()

Definition at line 515 of file qwt_thermo.cpp.

◆ setSpacing()

void QwtThermo::setSpacing ( int spacing )

Change the spacing between pipe and scale.

A spacing of 0 means, that the backbone of the scale is below the pipe.

The default setting is 3 pixels.

Parameters

spacing Number of pixels

See also: spacing();

Definition at line 629 of file qwt_thermo.cpp.

◆ setValue

void QwtThermo::setValue ( double value )

virtualslot

Set the current value.

Parameters

value New Value

See also: value()

Definition at line 181 of file qwt_thermo.cpp.

◆ sizeHint()

QSize QwtThermo::sizeHint ( ) const

virtual

Returns: the minimum size hint

See also: minimumSizeHint()

Definition at line 846 of file qwt_thermo.cpp.

◆ spacing()

int QwtThermo::spacing ( ) const

◆ value()

double QwtThermo::value ( ) const

Member Data Documentation

◆ m_data

PrivateData* QwtThermo::m_data

private

Definition at line 174 of file qwt_thermo.h.

Property Documentation

◆ alarmEnabled

bool QwtThermo::alarmEnabled

readwrite

Returns: True, when the alarm threshold is enabled.

Warning: The alarm threshold has no effect, when a color map has been assigned

Definition at line 59 of file qwt_thermo.h.

◆ alarmLevel

double QwtThermo::alarmLevel

readwrite

Returns: Alarm threshold.

See also: setAlarmLevel()

Warning: The alarm threshold has no effect, when a color map has been assigned

Definition at line 60 of file qwt_thermo.h.

◆ borderWidth

int QwtThermo::borderWidth

readwrite

Returns: Border width of the thermometer pipe.

See also: setBorderWidth()

Definition at line 63 of file qwt_thermo.h.

◆ orientation

Qt::Orientation QwtThermo::orientation

readwrite

Returns: Orientation

See also: setOrientation()

Definition at line 54 of file qwt_thermo.h.

◆ origin

double QwtThermo::origin

readwrite

Returns: Origin of the thermo, when OriginCustom is enabled

See also: setOrigin(), setOriginMode(), originMode()

Definition at line 61 of file qwt_thermo.h.

◆ originMode

QwtThermo::OriginMode QwtThermo::originMode

readwrite

Returns: Mode, how the origin is determined.

See also: setOriginMode(), serOrigin(), origin()

Definition at line 57 of file qwt_thermo.h.

◆ pipeWidth

int QwtThermo::pipeWidth

readwrite

Returns: Width of the pipe.

See also: setPipeWidth()

Definition at line 64 of file qwt_thermo.h.

◆ scalePosition

QwtThermo::ScalePosition QwtThermo::scalePosition

readwrite

Returns: Scale position.

See also: setScalePosition()

Definition at line 56 of file qwt_thermo.h.

◆ spacing

int QwtThermo::spacing

readwrite

Returns: Number of pixels between pipe and scale

See also: setSpacing()

Definition at line 62 of file qwt_thermo.h.

◆ value

double QwtThermo::value

readwrite

Return the value.

Definition at line 65 of file qwt_thermo.h.

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

Classes

Public Types

Public Slots

Public Member Functions

Protected Member Functions

Properties

Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

◆ OriginMode

◆ ScalePosition

Constructor & Destructor Documentation

◆ QwtThermo()

◆ ~QwtThermo()

Member Function Documentation

◆ alarmBrush()

◆ alarmEnabled()

◆ alarmLevel()

◆ alarmRect()

◆ borderWidth()

◆ changeEvent()

◆ colorMap() [1/2]

◆ colorMap() [2/2]

◆ drawLiquid()

◆ fillBrush()

◆ fillRect()

◆ layoutThermo()

◆ minimumSizeHint()

◆ orientation()

◆ origin()

◆ originMode()

◆ paintEvent()

◆ pipeRect()

◆ pipeWidth()

◆ rangeFlags()

◆ resizeEvent()

◆ scaleChange()

◆ scaleDraw() [1/2]

◆ scaleDraw() [2/2]

◆ scalePosition()

◆ setAlarmBrush()

◆ setAlarmEnabled()

◆ setAlarmLevel()

◆ setBorderWidth()

◆ setColorMap()

◆ setFillBrush()

◆ setOrientation()

◆ setOrigin()

◆ setOriginMode()

◆ setPipeWidth()

◆ setRangeFlags()

◆ setScaleDraw()

◆ setScalePosition()

◆ setSpacing()

◆ setValue

◆ sizeHint()

◆ spacing()

◆ value()

Member Data Documentation

◆ m_data

Property Documentation

◆ alarmEnabled

◆ alarmLevel

◆ borderWidth

◆ orientation

◆ origin

◆ originMode

◆ pipeWidth

◆ scalePosition

◆ spacing

◆ value