vtkContextInteractorStyle.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkContextInteractorStyle.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.

=========================================================================*/
#ifndef vtkContextInteractorStyle_h
#define vtkContextInteractorStyle_h

#include "vtkViewsContext2DModule.h" // For export macro
#include "vtkInteractorStyle.h"
#include "vtkNew.h" // For ivars
#include "vtkWeakPointer.h" // For ivars

class vtkContextMouseEvent;
class vtkContextScene;

class VTKVIEWSCONTEXT2D_EXPORT vtkContextInteractorStyle : public vtkInteractorStyle
{
public:
  static vtkContextInteractorStyle *New();
  vtkTypeMacro(vtkContextInteractorStyle, vtkInteractorStyle);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void SetScene(vtkContextScene* scene);

  vtkContextScene* GetScene();

  virtual void OnSceneModified();

  void OnMouseMove() override;

  void OnLeftButtonDown() override;

  void OnLeftButtonUp() override;

  void OnMiddleButtonDown() override;

  void OnMiddleButtonUp() override;

  void OnRightButtonDown() override;

  void OnRightButtonUp() override;

  void OnMouseWheelForward() override;

  void OnMouseWheelBackward() override;

  virtual void OnSelection(unsigned int rect[5]);

  void OnChar() override;

  void OnKeyPress() override;

  void OnKeyRelease() override;

protected:
  vtkContextInteractorStyle();
  ~vtkContextInteractorStyle() override;

  static void ProcessSceneEvents(vtkObject* object, unsigned long event,
                                 void* clientdata, void* calldata);

  static void ProcessInteractorEvents(vtkObject* object, unsigned long event,
                                      void* clientdata, void* calldata);

  virtual void RenderNow();

  void BeginProcessingEvent();

  void EndProcessingEvent();

  vtkWeakPointer<vtkContextScene> Scene;
  vtkNew<vtkCallbackCommand> SceneCallbackCommand;
  vtkNew<vtkCallbackCommand> InteractorCallbackCommand;
  int                 ProcessingEvents;
  vtkMTimeType        LastSceneRepaintMTime;

  int                 SceneTimerId;
  bool                TimerCallbackInitialized;

private:
  vtkContextInteractorStyle(const vtkContextInteractorStyle&) = delete;
  void operator=(const vtkContextInteractorStyle&) = delete;

  void ConstructMouseEvent(vtkContextMouseEvent &event, int button);
  bool ProcessMousePress(const vtkContextMouseEvent &event);
};

#endif