vtkFreeTypeLabelRenderStrategy.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkFreeTypeLabelRenderStrategy_h
#define vtkFreeTypeLabelRenderStrategy_h
 
#include "vtkLabelRenderStrategy.h"
#include "vtkRenderingLabelModule.h" // For export macro
#include "vtkWrappingHints.h"        // For VTK_MARSHALAUTO
 
VTK_ABI_NAMESPACE_BEGIN
class vtkActor2D;
class vtkTextRenderer;
class vtkTextMapper;
 
class VTKRENDERINGLABEL_EXPORT VTK_MARSHALAUTO vtkFreeTypeLabelRenderStrategy
  : public vtkLabelRenderStrategy
{
public:
  void PrintSelf(ostream& os, vtkIndent indent) override;
  vtkTypeMacro(vtkFreeTypeLabelRenderStrategy, vtkLabelRenderStrategy);
  static vtkFreeTypeLabelRenderStrategy* New();

  bool SupportsRotation() override { return false; }

  bool SupportsBoundedSize() override { return false; }

  void ComputeLabelBounds(vtkTextProperty* tprop, vtkStdString label, double bds[4]) override;
 
  using vtkLabelRenderStrategy::RenderLabel;
  void RenderLabel(int x[2], vtkTextProperty* tprop, vtkStdString label) override;

  void ReleaseGraphicsResources(vtkWindow* window) override;
 
protected:
  vtkFreeTypeLabelRenderStrategy();
  ~vtkFreeTypeLabelRenderStrategy() override;
 
  vtkTextRenderer* TextRenderer;
  vtkTextMapper* Mapper;
  vtkActor2D* Actor;
 
private:
  vtkFreeTypeLabelRenderStrategy(const vtkFreeTypeLabelRenderStrategy&) = delete;
  void operator=(const vtkFreeTypeLabelRenderStrategy&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif