vtkPiecewisePointHandleItem.h

Go to the documentation of this file.

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

#ifndef vtkPiecewisePointHandleItem_h
#define vtkPiecewisePointHandleItem_h

#include "vtkChartsCoreModule.h" // For export macro
#include "vtkContextItem.h"
#include "vtkWeakPointer.h"   // Needed for weak pointer to the PiecewiseFunction.
#include "vtkWrappingHints.h" // For VTK_MARSHALAUTO

VTK_ABI_NAMESPACE_BEGIN
class vtkContext2D;
class vtkPiecewiseFunction;
class vtkCallbackCommand;
class vtkAbstractContextItem;

class VTKCHARTSCORE_EXPORT VTK_MARSHALAUTO vtkPiecewisePointHandleItem : public vtkContextItem
{
public:
  vtkTypeMacro(vtkPiecewisePointHandleItem, vtkContextItem);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  static vtkPiecewisePointHandleItem* New();
  static void CallRedraw(vtkObject* sender, unsigned long event, void* receiver, void* params);

  void SetParent(vtkAbstractContextItem* parent) override;

  bool Paint(vtkContext2D* painter) override;


  vtkSetMacro(CurrentPointIndex, vtkIdType);
  vtkGetMacro(CurrentPointIndex, vtkIdType);


  virtual void SetPiecewiseFunction(vtkPiecewiseFunction* piecewiseFunc);
  vtkWeakPointer<vtkPiecewiseFunction> GetPiecewiseFunction();

  int IsOverHandle(float* pos);

  bool Hit(const vtkContextMouseEvent& mouse) override;

  bool MouseMoveEvent(const vtkContextMouseEvent& mouse) override;

  bool MouseButtonPressEvent(const vtkContextMouseEvent& mouse) override;

  bool MouseButtonReleaseEvent(const vtkContextMouseEvent& mouse) override;

protected:
  vtkPiecewisePointHandleItem();
  ~vtkPiecewisePointHandleItem() override;

  virtual void Redraw();

  int MouseOverHandleIndex;
  vtkIdType CurrentPointIndex;
  float HandleRadius;

  vtkWeakPointer<vtkPiecewiseFunction> PiecewiseFunction;
  vtkCallbackCommand* Callback;

private:
  vtkPiecewisePointHandleItem(const vtkPiecewisePointHandleItem&) = delete;
  void operator=(const vtkPiecewisePointHandleItem&) = delete;

  class InternalPiecewisePointHandleInfo;
  InternalPiecewisePointHandleInfo* Internal;
};

VTK_ABI_NAMESPACE_END
#endif // vtkPiecewisePointHandleItem_h