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// SPDX-License-Identifier: LGPL-2.1-or-later

/***************************************************************************
 *   Copyright (c) 2013 Werner Mayer <wmayer[at]users.sourceforge.net>     *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 of the License, or (at your option) any later version.      *
 *                                                                         *
 *   This library  is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/

#ifndef MESHGUI_MESHSELECTION_H
#define MESHGUI_MESHSELECTION_H

#include <vector>
#include <QWidget>

#include <Gui/Selection/SelectionObject.h>
#include <Inventor/nodes/SoEventCallback.h>
#ifndef MESH_GLOBAL_H
# include <Mod/Mesh/MeshGlobal.h>
#endif


namespace Gui
{
class View3DInventorViewer;
}

namespace MeshGui
{

class ViewProviderMesh;

class MeshGuiExport MeshSelection
{
public:
    MeshSelection();
    ~MeshSelection();

    MeshSelection(const MeshSelection&) = delete;
    MeshSelection(MeshSelection&&) = delete;
    MeshSelection& operator=(const MeshSelection&) = delete;
    MeshSelection& operator=(MeshSelection&&) = delete;

    void setEnabledViewerSelection(bool);

    void startSelection();
    void startDeselection();
    void stopSelection();
    bool deleteSelection();
    bool deleteSelectionBorder();
    void fullSelection();
    void clearSelection();
    void invertSelection();

    void selectComponent(int);
    void deselectComponent(int);
    void selectTriangle();
    void deselectTriangle();

    void setCheckOnlyPointToUserTriangles(bool);
    bool isCheckedOnlyPointToUserTriangles() const;
    void setCheckOnlyVisibleTriangles(bool);
    bool isCheckedOnlyVisibleTriangles() const;
    void setAddComponentOnClick(bool);
    void setRemoveComponentOnClick(bool);
    void setObjects(const std::vector<Gui::SelectionObject>&);
    std::vector<App::DocumentObject*> getObjects() const;
    void setViewer(Gui::View3DInventorViewer* v);

protected:
    void setCallback(SoEventCallbackCB* cb);
    std::list<ViewProviderMesh*> getViewProviders() const;
    Gui::View3DInventorViewer* getViewer() const;
    void prepareFreehandSelection(bool, SoEventCallbackCB* cb);
    void startInteractiveCallback(Gui::View3DInventorViewer* viewer, SoEventCallbackCB* cb);
    void stopInteractiveCallback(Gui::View3DInventorViewer* viewer);

private:
    static void selectGLCallback(void* ud, SoEventCallback* n);
    static void pickFaceCallback(void* ud, SoEventCallback* n);

private:
    bool onlyPointToUserTriangles {false};
    bool onlyVisibleTriangles {false};
    bool addToSelection {false};
    bool addComponent {false};
    bool removeComponent {false};
    SoEventCallbackCB* activeCB {nullptr};
    SoEventCallbackCB* selectionCB {nullptr};
    Gui::View3DInventorViewer* ivViewer {nullptr};
    mutable std::vector<Gui::SelectionObject> meshObjects;

    static unsigned char cross_bitmap[];
    static unsigned char cross_mask_bitmap[];
};

}  // namespace MeshGui

#endif  // MESHGUI_MESHSELECTION_H