icl::qt::ThreadedUpdatableSlider Class Reference

Compability class. More...

#include <ThreadedUpdatableSlider.h>

Inheritance diagram for icl::qt::ThreadedUpdatableSlider:

Classes
struct	CB
	internally callback type More...

Public Member Functions
	ThreadedUpdatableSlider (QWidget *parent=0)
	Base constructor. More...
	ThreadedUpdatableSlider (Qt::Orientation o, QWidget *parent=0)
void	setValueFromOtherThread (int value)
	call this function to update a widget's UI from an external thread More...
void	setStepping (int stepping)
	the given stepping is automatically clipped to [1,...] More...
virtual bool	event (QEvent *event)
	automatically called by Qt's event processing mechanism More...
void	registerCallback (const utils::Function< void > &cb, const std::string &events="value")
	registers a void-callback function to the given event names More...
void	removeCallbacks ()
	removes all callbacks associated to this slider component More...

Protected Slots
void	collectValueChanged (int)
	for collecting slider singnals More...
void	collectSliderPressed ()
	for collecting slider singnals More...
void	collectSliderMoved (int)
	for collecting slider singnals More...
void	collectSliderReleased ()
	for collecting slider singnals More...

Private Attributes
std::vector< CB >	callbacks
	internal list of callbacks More...
int	m_stepping

Friends
struct	EventFilter

Detailed Description

Compability class.

This class provides a compability function for asyncronous updating of a QWidget. As QWidget::update() has shown to be not as threadsafe as expected, the new updateFromOtherThread function fixes this problem.

updateFromOtherThread used QApplication::postEvent, to post a UserType QEvent to this object, which is caught in the overloaded event() function

Constructor & Destructor Documentation

ThreadedUpdatableSlider() [1/2]

icl::qt::ThreadedUpdatableSlider::ThreadedUpdatableSlider

(

QWidget *

parent = 0

)

Base constructor.

ThreadedUpdatableSlider() [2/2]

icl::qt::ThreadedUpdatableSlider::ThreadedUpdatableSlider	(	Qt::Orientation	o,
		QWidget *	parent = 0
	)

Member Function Documentation

collectSliderMoved

void icl::qt::ThreadedUpdatableSlider::collectSliderMoved ( int  )

protectedslot

for collecting slider singnals

collectSliderPressed

void icl::qt::ThreadedUpdatableSlider::collectSliderPressed ( )

protectedslot

for collecting slider singnals

collectSliderReleased

void icl::qt::ThreadedUpdatableSlider::collectSliderReleased ( )

protectedslot

for collecting slider singnals

collectValueChanged

void icl::qt::ThreadedUpdatableSlider::collectValueChanged ( int  )

protectedslot

for collecting slider singnals

event()

virtual bool icl::qt::ThreadedUpdatableSlider::event ( QEvent *  event )

virtual

automatically called by Qt's event processing mechanism

registerCallback()

void icl::qt::ThreadedUpdatableSlider::registerCallback	(	const utils::Function< void > &	cb,
		const std::string &	events = "value"
	)

registers a void-callback function to the given event names

allowed event names are

• press (when the slider is pressed)
• release (when the slider is released)
• move (when the slider is moved)
• value (when the value is changed)
• all (for all events)

removeCallbacks()

void icl::qt::ThreadedUpdatableSlider::removeCallbacks

(

)

removes all callbacks associated to this slider component

setStepping()

void icl::qt::ThreadedUpdatableSlider::setStepping ( int  stepping )

inline

the given stepping is automatically clipped to [1,...]

setValueFromOtherThread()

void icl::qt::ThreadedUpdatableSlider::setValueFromOtherThread ( int  value )

inline

call this function to update a widget's UI from an external thread

new, if this is called from the GUI thread, setValue is called directly without using Qt's signal mechanism

Friends And Related Function Documentation

EventFilter

friend struct EventFilter

friend

Member Data Documentation

callbacks

std::vector<CB> icl::qt::ThreadedUpdatableSlider::callbacks

private

internal list of callbacks

m_stepping

int icl::qt::ThreadedUpdatableSlider::m_stepping

private

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

• /Users/alneuman/vm/icl/ICLQt/src/ICLQt/ThreadedUpdatableSlider.h