Utility class to avoid Qt warning when accesing QLabels from differnt Threads. More...

#include <CompabilityLabel.h>

Inheritance diagram for icl::qt::CompabilityLabel:

Public Member Functions
	CompabilityLabel (const QString &text, QWidget *parent=0)
	Create a new label with given text and given parent widget. More...

virtual void	paintEvent (QPaintEvent *evt)
	reimplemented drawin function (draw the current text centered) More...

void	setNum (int i)
	make the label show an integer value More...

void	setNum (float f)
	make the label show a float value More...

void	setText (const QString &text)
	make the lable show a given string More...

QString	text () const
	returns the current text (also thread save) More...

Qt::Alignment	getAlignment () const
	returns current alignment More...

void	setAlignment (Qt::Alignment a)
	sets new text alignment More...

Public Member Functions inherited from icl::qt::ThreadedUpdatableWidget
	ThreadedUpdatableWidget (QWidget *parent=0)
	Base constructor. More...

void	updateFromOtherThread ()
	call this function to update a widget's UI from an external thread More...

virtual bool	event (QEvent *event)
	automatically called by Qt's event processing mechanism More...

Private Attributes
QString	m_sText
	current text (protected by the mutex) More...

Qt::Alignment	m_alignment
	text alignment More...

QMutex	m_oMutex
	Thread-safety mutex. More...

Detailed Description

Utility class to avoid Qt warning when accesing QLabels from differnt Threads.

QLabels can not be used from different Threads. So if a QLabel is created in in the main thread, it might not be set up to show another text/number from the working thread. As a workaround, the "label" component of the ICL GUI API uses not the original QLabel but this thread-save reimplementation called CompabilityLabel.

Constructor & Destructor Documentation

◆ CompabilityLabel()

icl::qt::CompabilityLabel::CompabilityLabel	(	const QString &	text,
		QWidget *	parent = `0`
	)

Create a new label with given text and given parent widget.

Member Function Documentation

◆ getAlignment()

Qt::Alignment icl::qt::CompabilityLabel::getAlignment ( ) const

returns current alignment

◆ paintEvent()

virtual void icl::qt::CompabilityLabel::paintEvent ( QPaintEvent * evt )

virtual

reimplemented drawin function (draw the current text centered)

◆ setAlignment()

void icl::qt::CompabilityLabel::setAlignment ( Qt::Alignment a )

sets new text alignment

◆ setNum() [1/2]

void icl::qt::CompabilityLabel::setNum ( int i )

make the label show an integer value

◆ setNum() [2/2]

void icl::qt::CompabilityLabel::setNum ( float f )

make the label show a float value

◆ setText()

void icl::qt::CompabilityLabel::setText ( const QString & text )

make the lable show a given string

◆ text()

QString icl::qt::CompabilityLabel::text ( ) const

returns the current text (also thread save)

Member Data Documentation

◆ m_alignment

Qt::Alignment icl::qt::CompabilityLabel::m_alignment

private

text alignment

◆ m_oMutex

QMutex icl::qt::CompabilityLabel::m_oMutex

mutableprivate

Thread-safety mutex.

◆ m_sText

QString icl::qt::CompabilityLabel::m_sText