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/*=========================================================================
Program: ParaView
Module: vtkSMViewProxyInteractorHelper.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkSMViewProxyInteractorHelper.h"
#include "vtkMemberFunctionCommand.h"
#include "vtkObjectFactory.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkSMPropertyHelper.h"
#include "vtkSMViewProxy.h"
#include <cassert>
vtkStandardNewMacro(vtkSMViewProxyInteractorHelper);
//----------------------------------------------------------------------------
vtkSMViewProxyInteractorHelper::vtkSMViewProxyInteractorHelper()
: DelayedRenderTimerId(-1),
Interacting(false),
Interacted(false)
{
this->Observer = vtkMakeMemberFunctionCommand(*this,
&vtkSMViewProxyInteractorHelper::Execute);
}
//----------------------------------------------------------------------------
vtkSMViewProxyInteractorHelper::~vtkSMViewProxyInteractorHelper()
{
vtkMemberFunctionCommand<vtkSMViewProxyInteractorHelper>::SafeDownCast(
this->Observer)->Reset();
this->Observer->Delete();
this->Observer = NULL;
}
//----------------------------------------------------------------------------
void vtkSMViewProxyInteractorHelper::SetViewProxy(vtkSMViewProxy* proxy)
{
if (this->ViewProxy != proxy)
{
if (this->ViewProxy)
{
this->ViewProxy->RemoveObserver(this->Observer);
}
this->ViewProxy = proxy;
if (this->ViewProxy)
{
// Monitor renders that happen directly on the view, that way we don't
// trigger extra renders if view already rendered.
this->ViewProxy->AddObserver(vtkCommand::StartEvent, this->Observer);
}
}
}
//----------------------------------------------------------------------------
vtkSMViewProxy* vtkSMViewProxyInteractorHelper::GetViewProxy()
{
return this->ViewProxy.GetPointer();
}
//----------------------------------------------------------------------------
void vtkSMViewProxyInteractorHelper::SetupInteractor(vtkRenderWindowInteractor* iren)
{
if (this->Interactor == iren)
{
return;
}
if (this->Interactor)
{
this->Interactor->RemoveObserver(this->Observer);
}
this->Interactor = iren;
if (this->Interactor)
{
// Turn off direct rendering from the interactor. The interactor calls
// vtkRenderWindow::Render(). We don't want that. We want it to go through
// the vtkSMViewProxy layer.
this->Interactor->EnableRenderOff();
this->Interactor->AddObserver(vtkCommand::RenderEvent, this->Observer);
this->Interactor->AddObserver(vtkCommand::StartInteractionEvent, this->Observer);
this->Interactor->AddObserver(vtkCommand::InteractionEvent, this->Observer);
this->Interactor->AddObserver(vtkCommand::EndInteractionEvent, this->Observer);
this->Interactor->AddObserver(vtkCommand::TimerEvent, this->Observer);
}
}
//----------------------------------------------------------------------------
vtkRenderWindowInteractor* vtkSMViewProxyInteractorHelper::GetInteractor()
{
return this->Interactor.GetPointer();
}
//----------------------------------------------------------------------------
void vtkSMViewProxyInteractorHelper::Execute(
vtkObject* caller, unsigned long event, void* calldata)
{
assert(this->ViewProxy);
if (caller == this->ViewProxy.GetPointer())
{
switch (event)
{
case vtkCommand::StartEvent:
// The view is rendering on its own. If we had delayed a render request,
// that needs to be cancelled since it's not needed anymore, the view is
// already rendering.
this->CleanupTimer();
break;
}
return;
}
assert(caller == this->Interactor.GetPointer());
vtkRenderWindowInteractor* iren = vtkRenderWindowInteractor::SafeDownCast(caller);
assert(iren);
switch (event)
{
case vtkCommand::RenderEvent:
this->CleanupTimer();
this->Render();
break;
case vtkCommand::StartInteractionEvent:
this->Interacting = true;
this->Interacted = false;
this->CleanupTimer();
break;
case vtkCommand::InteractionEvent:
this->Interacted = true;
break;
case vtkCommand::EndInteractionEvent:
this->Interacting = false;
if (this->Interacted)
{
this->Interacted = false;
assert(this->DelayedRenderTimerId == -1);
double delay = vtkSMPropertyHelper(this->ViewProxy,
"NonInteractiveRenderDelay", /*quiet*/true).GetAsDouble();
if (delay <= 0.01)
{
this->Render();
}
else
{
this->DelayedRenderTimerId = iren->CreateOneShotTimer(delay*1000);
this->InvokeEvent(vtkCommand::CreateTimerEvent, &this->DelayedRenderTimerId);
}
}
break;
case vtkCommand::TimerEvent:
{
assert(calldata);
int timerId = *(reinterpret_cast<int*>(calldata));
if (this->DelayedRenderTimerId == timerId)
{
this->InvokeEvent(vtkCommand::TimerEvent, &this->DelayedRenderTimerId);
this->DelayedRenderTimerId = -1;
this->Render();
}
}
}
}
//----------------------------------------------------------------------------
void vtkSMViewProxyInteractorHelper::CleanupTimer()
{
if (this->DelayedRenderTimerId != -1)
{
assert(this->Interactor);
this->InvokeEvent(vtkCommand::DestroyTimerEvent, &this->DelayedRenderTimerId);
this->Interactor->DestroyTimer(this->DelayedRenderTimerId);
this->DelayedRenderTimerId = -1;
}
}
//----------------------------------------------------------------------------
void vtkSMViewProxyInteractorHelper::Render()
{
this->CleanupTimer();
if (vtkSMProperty* prop = this->ViewProxy->GetProperty("EnableRenderOnInteraction"))
{
if (vtkSMPropertyHelper(prop).GetAsInt() != 1)
{
return;
}
}
if (this->Interactor->GetEnableRender())
{
vtkWarningMacro("The Interactor is set to render automatically. "
"That is not expected. Rendering should be handled by vtkSMViewProxyInteractorHelper "
"to avoid duplicate rendering and parallel issues");
return;
}
if (this->Interacting)
{
this->ViewProxy->InteractiveRender();
}
else
{
this->ViewProxy->StillRender();
}
}
//----------------------------------------------------------------------------
void vtkSMViewProxyInteractorHelper::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "ViewProxy: " << this->ViewProxy.GetPointer() << endl;
}
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