vtkQWidgetTexture.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkQWidgetTexture_h
#define vtkQWidgetTexture_h
 
#include "vtkGUISupportQtModule.h" // For export macro
#include "vtkTextureObject.h"
#include <array>      // for ivar
#include <functional> // for ivar
 
class QGraphicsScene;
class QWidget;
 
VTK_ABI_NAMESPACE_BEGIN

class VTKGUISUPPORTQT_EXPORT vtkQWidgetTexture : public vtkTextureObject
{
public:
  static vtkQWidgetTexture* New();
  vtkTypeMacro(vtkQWidgetTexture, vtkTextureObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  void SetWidget(QWidget* w);
  QWidget* GetWidget() { return this->Widget; }

  QGraphicsScene* GetScene() { return this->Scene; }

  void Activate() override;

  void ReleaseGraphicsResources(vtkWindow* win) override;
 
protected:
  vtkQWidgetTexture();
  ~vtkQWidgetTexture() override;
 
  QGraphicsScene* Scene;
  QWidget* Widget;
 
  // method called when the widget needs repainting
  std::function<void()> RedrawMethod;
 
  // internal method to setup the scene/framebuffer/etc
  void AllocateFromWidget();
 
  unsigned char* ImageBuffer;
  std::array<int, 2> ImageBufferDimensions;
 
private:
  vtkQWidgetTexture(const vtkQWidgetTexture&) = delete;
  void operator=(const vtkQWidgetTexture&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif