Hi Miklos,
the mitk::ProgressBar is a very simple interface which provides a
centralized view of the applications work progress. Hence you are only
allowed to increment the progress with a relative value, because you
cannot know what other tasks might still be pending. As far as I know,
we do not have a helper class for reporting ITK filter iteration events.
However, here is a simple code snippet which reports ITK events to the
MITK progress bar (provided that the ITK filter supports iteration events):
void SomeClass::DoFiltering()
{
mitk::ProgressBar::GetInstance()->AddStepsToDo(stepCount);
itk::ReceptorMemberCommand<ITKFilterType>::Pointer command =
itk::ReceptorMemberCommand<ITKFilterType>::New();
command->SetCallbackFunction(this, &SomeClass::SetProgress);
itkFilter->AddObserver(itk::IterationEvent(), command);
...
itkFilter->Update();
}
void SomeClass::SetProgress()
{
mitk::ProgressBar::GetInstance()->Progress();
}
The progress bar will be reset if the sum of the progress steps given to
Progress(int steps = 1) >= sum of the steps given to AddStepsToDo(int
steps) (since the last reset).
Best,
Sascha
On 05/26/2011 06:30 PM, Miklos Espak wrote:
> Hi,
>
> I would like to show the progress of some ITK filters on the status
> bar. However, the API of mitk::ProgressBar follows different concepts
> then e.g. QProgressBar or itk::ProcessObject::GetProgress(), e.g. it
> does not allow to set the progress as an absolute value but as an
> advancement since the last reported progress. It is also not possible
> to reset the progress bar.
>
> When are the registered progress bars reset internally? Maybe after
> the following?
> mitk::RenderingManager::GetInstance()->RequestUpdateAll();
>
> Is there an adaptor class eventually to display the progress of a
> filter? Or I have to preserve the last progress status at every
> process event, and subtract from the current one?
>
> Thank you,
> Miklos
>
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