[Paraview-developers] Writing a plugin that automatically adds a source after ParaView client starts up

[Cory Quammen]

Thanks, Utkarsh! Your solution works perfectly.

Cory

On Fri, Jul 29, 2011 at 12:07 PM, Utkarsh Ayachit
<utkarsh.ayachit at kitware.com> wrote:
> Cory,
>
> Attached is a modified version of the Autostart plugin example that
> does what you expect.
>
> Utkarsh
>
> On Fri, Jul 29, 2011 at 11:15 AM, Cory Quammen <cquammen at cs.unc.edu> wrote:
>> Hi all,
>>
>> I'm trying to write a plugin that will add a source to ParaView
>> immediately after the client starts up. I've figured out the code
>> needed to create the source. Now, the only problem is figuring out
>> when to call this code.
>>
>> I'm attempting to do this with an autostart plugin. The problem is
>> that plugins appear to be loaded *before* everything my plugin needs
>> is set up, so setting up the source within the onStartup() method in
>> my autostart plugin does not work.
>>
>> What I'd like to be able to do is set up a slot in my plugin that
>> connects to a Qt signal that is fired after everything necessary for
>> adding a source is set up. Unfortunately, the signals I've tried
>> (listed below) appear to be emitted too early:
>>
>> pqServerManagerModel::serverAdded(pqServer *)
>> pqActiveObjects::serverChanged(pqServer *)
>>
>> Specifically, I am getting an error in pqPipelineModel.cxx:934, "Could
>> not locate server on which the source is being added." It seems the
>> server hasn't yet been added to the pqPipelineModel.
>>
>> Does anyone have a suggestion for a signal that is emitted towards the
>> very end of the client program startup? Other suggestions on how to
>> add a source after startup are also appreciated. I'd like to avoid
>> modifying the ParaView application code itself if at all possible.
>>
>> Thanks,
>> Cory
>>
>> P.S.
>>
>> In case it is helpful, here is the code I'm using to set up the source:
>>
>>  pqActiveObjects* activeObjects = &pqActiveObjects::instance();
>>  pqApplicationCore* app = pqApplicationCore::instance();
>>  pqObjectBuilder* builder = app->getObjectBuilder();
>>  pqPipelineSource *text = builder->createSource("sources",
>>                                                 "TextSource",
>>
>> pqActiveObjects::instance().activeServer());
>>  text->rename(tr("Text"));
>>  text->setModifiedState(pqProxy::UNMODIFIED);
>>  pqDisplayPolicy* displayPolicy =
>> pqApplicationCore::instance()->getDisplayPolicy();
>>  displayPolicy->setRepresentationVisibility(
>>    text->getOutputPort(0), pqActiveObjects::instance().activeView(), true);
>>
>>
>> --
>> Cory Quammen
>> Research Associate
>> Department of Computer Science
>> University of North Carolina at Chapel Hill
>> http://www.cs.unc.edu/~cquammen
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>>
>



-- 
Cory Quammen
Research Associate
Department of Computer Science
University of North Carolina at Chapel Hill
http://www.cs.unc.edu/~cquammen