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IlvTransitionScheduler Class Reference

Transition Scheduler class. More...

#include <ilviews/util/transition.h>

Public Member Functions

 IlvTransitionScheduler (IlvDisplay *display, IlvTransitionHandler &handler, IlUInt duration, IlBoolean isSteps=IlFalse, IlUInt delay=0, IlBoolean owner=IlTrue)
 Constructor. More...
 
IlBoolean finishBeforeStopping () const
 Returns IlTrue if the scheduler must finish its job before stopping. More...
 
void finishBeforeStopping (IlBoolean finish=IlTrue)
 Tells the scheduler to finish its job or not before stopping. More...
 
IlvDisplaygetDisplay () const
 Returns the display connection of this scheduler. More...
 
IlUInt getDuration () const
 Returns the duration of the scheduler. More...
 
IlUInt getSteps () const
 Returns the number of steps of the scheduler. More...
 
IlvTransitionHandlergetTransitionHandler ()
 Returns the transition handler connected to this scheduler. More...
 
IlBoolean isRunning () const
 Returns IlTrue if the scheduler is running. More...
 
virtual void nextTransition ()
 Is called by the scheduler to go from a transition to the next one.
 
void setDuration (IlUInt duration)
 Sets the duration of the scheduler. More...
 
void setSteps (IlUInt steps)
 Sets the number of steps of the scheduler. More...
 
virtual void start ()
 Starts the scheduler. More...
 
virtual void stop ()
 Stops the scheduler. More...
 

Detailed Description

Transition Scheduler class.

Library: views

This class is a scheduler for IlvTransitionHandler objects. It calls the IlvTransitionHandler::doTransition until the transition is finished. It's possible to tell the scheduler to execute the transition using a fixed number of steps, or within a fixed delay.

See Also
IlvTransitionHandler

Constructor & Destructor Documentation

IlvTransitionScheduler::IlvTransitionScheduler ( IlvDisplay display,
IlvTransitionHandler handler,
IlUInt  duration,
IlBoolean  isSteps = IlFalse,
IlUInt  delay = 0,
IlBoolean  owner = IlTrue 
)

Constructor.

Initializes a new instance of the IlvTransitionScheduler class.

Parameters
displayThe display connection.
handlerThe transition handler.
durationIf the next parameter isSteps is IlTrue, this parameter is the number of steps that the scheduler will trigger to complete the transition. Otherwise, it represents the duration in milliseconds that the transition will take.
isStepsTell whether or not the previous parameter duration is a number of steps, or a duration.
delayThis parameter controls the frequency at which the scheduler will trigger transition. If delay is 0, the scheduler will use an idle proc. If delay is -1, the scheduler will be synchrone, that is, calling IlvTransitionScheduler::start will return when the transition is finished. Otherwise, the scheduler will use a timer with a period of delay.
ownerA Boolean value that specify whether the scheduler is the owner of the transition handler or not. If owner is IlTrue, the transition handler will be deleted when the scheduler is deleted.
See Also
IlvTransitionHandler, IlvTimer, IlvEventLoop::addIdleProc

Member Function Documentation

IlBoolean IlvTransitionScheduler::finishBeforeStopping ( ) const

Returns IlTrue if the scheduler must finish its job before stopping.

Returns
IlTrue if the scheduler must finish its job before stopping.
void IlvTransitionScheduler::finishBeforeStopping ( IlBoolean  finish = IlTrue)

Tells the scheduler to finish its job or not before stopping.

Parameters
finishThe Boolean value.
IlvDisplay* IlvTransitionScheduler::getDisplay ( ) const

Returns the display connection of this scheduler.

Returns
The display connection of this scheduler.
IlUInt IlvTransitionScheduler::getDuration ( ) const
IlUInt IlvTransitionScheduler::getSteps ( ) const

Returns the number of steps of the scheduler.

This value is not used if IlvTransitionScheduler::getDuration returns a value different of 0.

Returns
The number of steps that the scheduler will take to complete the transition.
See Also
IlvTransitionScheduler::setSteps, IlvTransitionScheduler::start, IlvTransitionScheduler::stop
IlvTransitionHandler& IlvTransitionScheduler::getTransitionHandler ( )

Returns the transition handler connected to this scheduler.

Returns
The transition handler connected to this scheduler.
IlBoolean IlvTransitionScheduler::isRunning ( ) const

Returns IlTrue if the scheduler is running.

Returns
IlTrue if the scheduler is running. Returns IlFalse otherwise.
See Also
IlvTransitionScheduler::start, IlvTransitionScheduler::stop
void IlvTransitionScheduler::setDuration ( IlUInt  duration)

Sets the duration of the scheduler.

This methods sets the total amount of time that the scheduler will take to complete the transition.

Parameters
durationThe duration of the scheduler. If duration is 0, then the scheduler will use the value returned by IlvTransitionScheduler::getSteps to complete the transition using a fixed number of steps.
See Also
IlvTransitionScheduler::getDuration, IlvTransitionScheduler::start, IlvTransitionScheduler::stop
void IlvTransitionScheduler::setSteps ( IlUInt  steps)

Sets the number of steps of the scheduler.

This value is not used if IlvTransitionScheduler::getDuration returns a value different of 0.

Parameters
stepsThe number of steps the scheduler will take to complete the transition.
See Also
IlvTransitionScheduler::getSteps, IlvTransitionScheduler::start, IlvTransitionScheduler::stop
virtual void IlvTransitionScheduler::start ( )
virtual
virtual void IlvTransitionScheduler::stop ( )
virtual

Stops the scheduler.

This method is automatically called when the transition is completed, but it can also be called by the user to stop the scheduler. In this case, if the IlvTransitionScheduler::finishBeforeStopping has been called with IlTrue, the scheduler will finish the transition before stopping.

See Also
IlvTransitionScheduler::start, IlvTransitionScheduler::start

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