VtkCustomInteractorStyle.h

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// SPDX-FileCopyrightText: Copyright (c) OpenGeoSys Community (opengeosys.org)
// SPDX-License-Identifier: BSD-3-Clause
 
#pragma once
 
// ** INCLUDES **
#include <QObject>
 
#include <vtkInteractorStyleTrackballCamera.h>
 
class vtkDataObject;
class vtkDataSetMapper;
class vtkActor;
 
class vtkUnstructuredGridAlgorithm;

class VtkCustomInteractorStyle : public QObject, public vtkInteractorStyleTrackballCamera
{
    Q_OBJECT
 
public:
    static VtkCustomInteractorStyle* New();
    vtkTypeMacro (VtkCustomInteractorStyle, vtkInteractorStyleTrackballCamera);

    void OnChar() override;

    void OnKeyDown() override;

    void OnKeyUp() override;

    void OnLeftButtonDown() override;

    void OnRightButtonDown() override;
 
public slots:
    void highlightActor(vtkProp3D* actor);

    void removeHighlightActor();
 
    void setHighlightActor(bool on);

    void pickableDataObject(vtkDataObject* object);
 
protected:
    VtkCustomInteractorStyle();
    ~VtkCustomInteractorStyle() override;

    vtkDataObject* _data{nullptr};

    vtkDataSetMapper* _selectedMapper;

    vtkActor* _selectedActor;
 
private:
    bool _highlightActor{false};
    bool _alternateMouseActions{false};
 
signals:
    void requestViewUpdate();

    void cursorChanged(Qt::CursorShape);

    void elementPicked(vtkUnstructuredGridAlgorithm const*const, unsigned);

    void clearElementView();
 
};