pqTransferFunction2DWidget.h

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// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
// SPDX-FileCopyrightText: Copyright (c) Sandia Corporation
// SPDX-License-Identifier: BSD-3-Clause
#ifndef pqTransferFunction2DWidget_h
#define pqTransferFunction2DWidget_h

#include "pqComponentsModule.h"
#include "vtkType.h"
#include <QWidget>

// Forward declarations
class vtkChart;
class vtkImageData;
class vtkPVTransferFunction2D;
// class vtkPVDiscretizableColorTransferFunction;

class PQCOMPONENTS_EXPORT pqTransferFunction2DWidget : public QWidget
{
  Q_OBJECT
  typedef QWidget Superclass;

public:
  pqTransferFunction2DWidget(QWidget* parent = nullptr);
  ~pqTransferFunction2DWidget() override;


  vtkImageData* histogram() const;
  virtual void setHistogram(vtkImageData*);


  void initialize(vtkPVTransferFunction2D* tf2d);
  bool isInitialized();

  vtkChart* chart() const;

  vtkPVTransferFunction2D* transferFunction() const;

public Q_SLOTS: // NOLINT(readability-redundant-access-specifiers)
  void render();

Q_SIGNALS:
  void transferFunctionModified();

protected Q_SLOTS:
  void showUsageStatus();

private:
  Q_DISABLE_COPY(pqTransferFunction2DWidget)

  class pqInternals;
  pqInternals* Internals;
};

#endif