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/*=========================================================================
Program: Visualization Toolkit
Module: vtkSDL2RenderWindowInteractor.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm 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.
=========================================================================*/
/**
* @class vtkSDL2RenderWindowInteractor
* @brief implements SDL2 specific functions
* required by vtkRenderWindowInteractor.
*
*/
#ifndef vtkSDL2RenderWindowInteractor_h
#define vtkSDL2RenderWindowInteractor_h
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderingUIModule.h" // For export macro
#include <map> // for ivar
VTK_ABI_NAMESPACE_BEGIN
class VTKRENDERINGUI_EXPORT vtkSDL2RenderWindowInteractor : public vtkRenderWindowInteractor
{
public:
/**
* Construct object so that light follows camera motion.
*/
static vtkSDL2RenderWindowInteractor* New();
vtkTypeMacro(vtkSDL2RenderWindowInteractor, vtkRenderWindowInteractor);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Initialize the event handler
*/
virtual void Initialize() override;
/**
* Run the event loop and return. This is provided so that you can
* implement your own event loop but yet use the vtk event handling as
* well.
*/
void ProcessEvents() override;
/**
* SDL2 specific application terminate, calls ClassExitMethod then
* calls PostQuitMessage(0) to terminate the application. An application can Specify
* ExitMethod for alternative behavior (i.e. suppression of keyboard exit)
*/
void TerminateApp(void) override;
/**
* These methods correspond to the Exit, User and Pick
* callbacks. They allow for the Style to invoke them.
*/
void ExitCallback() override;
// When using emscripten this adds the event handler
// and then returns without blocking or aborting.
// TerminateApp will remove the event hanbdler.
void AddEventHandler();
protected:
vtkSDL2RenderWindowInteractor();
~vtkSDL2RenderWindowInteractor() override;
bool ProcessEvent(void* event);
///@{
/**
* SDL2-specific internal timer methods. See the superclass for detailed
* documentation.
*/
int InternalCreateTimer(int timerId, int timerType, unsigned long duration) override;
int InternalDestroyTimer(int platformTimerId) override;
///@}
std::map<int, int> VTKToPlatformTimerMap;
/**
* This will start up the event loop and never return. If you
* call this method it will loop processing events until the
* application is exited.
*/
void StartEventLoop() override;
bool StartedMessageLoop;
private:
vtkSDL2RenderWindowInteractor(const vtkSDL2RenderWindowInteractor&) = delete;
void operator=(const vtkSDL2RenderWindowInteractor&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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