QQuickVTKItem.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright (c) John Stone
// SPDX-License-Identifier: BSD-3-Clause
#ifndef QQuickVTKItem_h
#define QQuickVTKItem_h
 
#include <QtQuick/QQuickItem>
 
#include <QtCore/QScopedPointer>
 
#include <functional>
 
#include "vtkGUISupportQtQuickModule.h" // for export macro
#include "vtkSmartPointer.h"
 
VTK_ABI_NAMESPACE_BEGIN
 
class vtkRenderWindow;
class vtkObject;
 
class QQuickVTKItemPrivate;
class VTKGUISUPPORTQTQUICK_EXPORT QQuickVTKItem : public QQuickItem
{
  Q_OBJECT
 
public:
  explicit QQuickVTKItem(QQuickItem* parent = nullptr);
  ~QQuickVTKItem() override;
 
  using vtkUserData = vtkSmartPointer<vtkObject>;
 
  static void setGraphicsApi();
 
 
  virtual vtkUserData initializeVTK(vtkRenderWindow* renderWindow)
  {
    Q_UNUSED(renderWindow)
    return {};
  }
 
 
  virtual void destroyingVTK(vtkRenderWindow* renderWindow, vtkUserData userData)
  {
    Q_UNUSED(renderWindow);
    Q_UNUSED(userData);
  }
 
 
  void dispatch_async(std::function<void(vtkRenderWindow* renderWindow, vtkUserData userData)> f);
 
  void scheduleRender();
 
public Q_SLOTS: // NOLINT(readability-redundant-access-specifiers)
 
  Q_INVOKABLE void pinchHandlerRotate(const QPointF& position, double delta);
  Q_INVOKABLE void pinchHandlerScale(const QPointF& position, double delta);
  Q_INVOKABLE void pinchHandlerTranslate(const QPointF& position, const QVector2D& delta);
 
protected:
  bool event(QEvent*) override;
 
  QSGNode* updatePaintNode(QSGNode*, UpdatePaintNodeData*) override;
  bool isTextureProvider() const override;
  QSGTextureProvider* textureProvider() const override;
  void releaseResources() override;
 
private Q_SLOTS:
  void invalidateSceneGraph();
 
private: // NOLINT(readability-redundant-access-specifiers)
  Q_DISABLE_COPY(QQuickVTKItem)
  Q_DECLARE_PRIVATE_D(_d_ptr, QQuickVTKItem)
  QScopedPointer<QQuickVTKItemPrivate> _d_ptr;
};
 
VTK_ABI_NAMESPACE_END
#endif // QQuickVTKItem_h