vtkHandleWidget.h

Go to the documentation of this file.

/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkHandleWidget.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef vtkHandleWidget_h
#define vtkHandleWidget_h

#include "vtkAbstractWidget.h"
#include "vtkInteractionWidgetsModule.h" // For export macro

class vtkHandleRepresentation;

class VTKINTERACTIONWIDGETS_EXPORT vtkHandleWidget : public vtkAbstractWidget
{
public:
  static vtkHandleWidget* New();


  vtkTypeMacro(vtkHandleWidget, vtkAbstractWidget);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void SetRepresentation(vtkHandleRepresentation* r)
  {
    this->Superclass::SetWidgetRepresentation(reinterpret_cast<vtkWidgetRepresentation*>(r));
  }

  vtkHandleRepresentation* GetHandleRepresentation()
  {
    return reinterpret_cast<vtkHandleRepresentation*>(this->WidgetRep);
  }

  void CreateDefaultRepresentation() override;


  vtkSetMacro(EnableAxisConstraint, vtkTypeBool);
  vtkGetMacro(EnableAxisConstraint, vtkTypeBool);
  vtkBooleanMacro(EnableAxisConstraint, vtkTypeBool);


  vtkSetMacro(EnableTranslation, vtkTypeBool);
  vtkGetMacro(EnableTranslation, vtkTypeBool);
  vtkBooleanMacro(EnableTranslation, vtkTypeBool);


  vtkSetMacro(AllowHandleResize, vtkTypeBool);
  vtkGetMacro(AllowHandleResize, vtkTypeBool);
  vtkBooleanMacro(AllowHandleResize, vtkTypeBool);


  vtkGetMacro(WidgetState, int);


  vtkSetMacro(ShowInactive, vtkTypeBool);
  vtkGetMacro(ShowInactive, vtkTypeBool);
  vtkBooleanMacro(ShowInactive, vtkTypeBool);

  // Manage the state of the widget
  enum _WidgetState
  {
    Start = 0,
    Active,
    Inactive
  };

  void SetEnabled(int enabling) override;

protected:
  vtkHandleWidget();
  ~vtkHandleWidget() override;

  // These are the callbacks for this widget
  static void GenericAction(vtkHandleWidget*);
  static void SelectAction(vtkAbstractWidget*);
  static void EndSelectAction(vtkAbstractWidget*);
  static void TranslateAction(vtkAbstractWidget*);
  static void ScaleAction(vtkAbstractWidget*);
  static void MoveAction(vtkAbstractWidget*);
  static void SelectAction3D(vtkAbstractWidget*);
  static void MoveAction3D(vtkAbstractWidget*);
  static void ProcessKeyEvents(vtkObject*, unsigned long, void*, void*);

  // helper methods for cursor management
  void SetCursor(int state) override;

  int WidgetState;
  vtkTypeBool EnableAxisConstraint;
  vtkTypeBool EnableTranslation;

  // Allow resizing of handles.
  vtkTypeBool AllowHandleResize;

  // Keep representation visible when disabled
  vtkTypeBool ShowInactive;

  vtkCallbackCommand* KeyEventCallbackCommand;

private:
  vtkHandleWidget(const vtkHandleWidget&) = delete;
  void operator=(const vtkHandleWidget&) = delete;
};

#endif