QVTKOpenGLNativeWidget.h

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

#include <QOpenGLWidget>
#include <QScopedPointer> // for QScopedPointer.

#include "QVTKInteractor.h"        // needed for QVTKInteractor
#include "vtkGUISupportQtModule.h" // for export macro
#include "vtkNew.h"                // needed for vtkNew
#include "vtkSmartPointer.h"       // needed for vtkSmartPointer

VTK_ABI_NAMESPACE_BEGIN
class QVTKInteractor;
class QVTKInteractorAdapter;
class QVTKRenderWindowAdapter;
class vtkGenericOpenGLRenderWindow;

class VTKGUISUPPORTQT_EXPORT QVTKOpenGLNativeWidget : public QOpenGLWidget
{
  Q_OBJECT
  typedef QOpenGLWidget Superclass;

public:
  QVTKOpenGLNativeWidget(QWidget* parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
  QVTKOpenGLNativeWidget(vtkGenericOpenGLRenderWindow* window, QWidget* parent = nullptr,
    Qt::WindowFlags f = Qt::WindowFlags());
  ~QVTKOpenGLNativeWidget() override;


  void setRenderWindow(vtkGenericOpenGLRenderWindow* win);
  void setRenderWindow(vtkRenderWindow* win);

  vtkRenderWindow* renderWindow() const;

  QVTKInteractor* interactor() const;

  static QSurfaceFormat defaultFormat(bool stereo_capable = false);


  void setEnableTouchEventProcessing(bool enable);
  bool enableTouchEventProcesing() const { return this->EnableTouchEventProcessing; }


  void setEnableHiDPI(bool enable);
  bool enableHiDPI() const { return this->EnableHiDPI; }


  void setUnscaledDPI(int);
  int unscaledDPI() const { return this->UnscaledDPI; }


  void setCustomDevicePixelRatio(double cdpr);
  double customDevicePixelRatio() const { return this->CustomDevicePixelRatio; }
  double effectiveDevicePixelRatio() const;


  void setDefaultCursor(const QCursor& cursor);
  const QCursor& defaultCursor() const { return this->DefaultCursor; }


  void setCursorCustom(const QCursor& cursor) { this->setCursor(cursor); }
  QCursor cursorCustom() const { return this->cursor(); }

protected Q_SLOTS:
  virtual void cleanupContext();

  void updateSize();

protected: // NOLINT(readability-redundant-access-specifiers)
  bool event(QEvent* evt) override;
  void initializeGL() override;
  void paintGL() override;

  vtkSmartPointer<vtkGenericOpenGLRenderWindow> RenderWindow;
  QScopedPointer<QVTKRenderWindowAdapter> RenderWindowAdapter;

private:
  Q_DISABLE_COPY(QVTKOpenGLNativeWidget);

  bool EnableTouchEventProcessing = true;
  bool EnableHiDPI;
  int UnscaledDPI;
  double CustomDevicePixelRatio;
  QCursor DefaultCursor;
};

VTK_ABI_NAMESPACE_END
#endif