vtkWebAssemblyOpenGLRenderWindow.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkWebAssemblyOpenGLRenderWindow_h
#define vtkWebAssemblyOpenGLRenderWindow_h

#include "vtkOpenGLRenderWindow.h"
#include "vtkRenderingOpenGL2Module.h" // For export macro
#include "vtkWrappingHints.h"          // For VTK_MARSHALAUTO
#include <stack>                       // for ivar

VTK_ABI_NAMESPACE_BEGIN
class vtkOverrideAttribute;
class VTKRENDERINGOPENGL2_EXPORT VTK_MARSHALAUTO vtkWebAssemblyOpenGLRenderWindow
  : public vtkOpenGLRenderWindow
{
public:
  static vtkWebAssemblyOpenGLRenderWindow* New();
  VTK_NEWINSTANCE
  static vtkOverrideAttribute* CreateOverrideAttributes();
  vtkTypeMacro(vtkWebAssemblyOpenGLRenderWindow, vtkOpenGLRenderWindow);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void Initialize() override;

  void Finalize() override;

  void SetFullScreen(vtkTypeBool) override;


  void SetSize(int, int) override;
  void SetSize(int a[2]) override { vtkOpenGLRenderWindow::SetSize(a); }


  void SetPosition(int x, int y) override { vtkOpenGLRenderWindow::SetPosition(x, y); }
  void SetPosition(int a[2]) override { vtkOpenGLRenderWindow::SetPosition(a); }

  int* GetScreenSize() VTK_SIZEHINT(2) override;

  int* GetPosition() VTK_SIZEHINT(2) override;

  void* GetGenericDisplayId() override { return (void*)this->ContextId; }
  void* GetGenericWindowId() override { return (void*)this->ContextId; }
  void* GetGenericDrawable() override { return (void*)this->ContextId; }

  void MakeCurrent() override;

  void ReleaseCurrent() override;

  bool IsCurrent() override;

  void Clean();


  void PushContext() override;
  void PopContext() override;

  bool SetSwapControl(int i) override;

  int GetColorBufferSizes(int* rgba) override;


  void HideCursor() override;
  void ShowCursor() override;

  vtkGetStringMacro(CanvasSelector);
  vtkSetStringMacro(CanvasSelector);

  enum class PowerPreferenceType
  {
    Default,
    LowPower,
    HighPerformance
  };


  vtkSetEnumMacro(PowerPreference, PowerPreferenceType);
  vtkGetEnumMacro(PowerPreference, PowerPreferenceType);


  void PreferHighPerformanceAdapter() { PowerPreference = PowerPreferenceType::HighPerformance; }
  void PreferLowPowerAdapter() { PowerPreference = PowerPreferenceType::LowPower; }

  void SetUseOffScreenBuffers(bool) override {}

  void SetShowWindow(bool) override {}

protected:
  vtkWebAssemblyOpenGLRenderWindow();
  ~vtkWebAssemblyOpenGLRenderWindow() override;

  unsigned long ContextId;
  std::stack<unsigned long> ContextStack;
  char* CanvasSelector = nullptr;
  PowerPreferenceType PowerPreference = PowerPreferenceType::Default;

  void CleanUpRenderers();
  void CreateAWindow() override;
  void DestroyWindow() override;

private:
  vtkWebAssemblyOpenGLRenderWindow(const vtkWebAssemblyOpenGLRenderWindow&) = delete;
  void operator=(const vtkWebAssemblyOpenGLRenderWindow&) = delete;
};

#define vtkWebAssemblyOpenGLRenderWindow_OVERRIDE_ATTRIBUTES                                       \
  vtkWebAssemblyOpenGLRenderWindow::CreateOverrideAttributes()
VTK_ABI_NAMESPACE_END
#endif