/**
 * Stone of Orthanc
 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
 * Department, University Hospital of Liege, Belgium
 * Copyright (C) 2017-2020 Osimis S.A., Belgium
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.
 *
 * This program 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 **/

#pragma once

#include "MeasureTool.h"

#include "../Scene2DViewport/LayerHolder.h"
#include "../Scene2D/Scene2D.h"
#include "../Scene2D/ScenePoint2D.h"
#include "../Scene2D/PolylineSceneLayer.h"
#include "../Scene2D/TextSceneLayer.h"

#include <boost/shared_ptr.hpp>
#include <boost/weak_ptr.hpp>
#include <boost/enable_shared_from_this.hpp>

#include <vector>
#include <cmath>

namespace OrthancStone
{
  class AngleMeasureTool : public MeasureTool
  {
  public:
    static boost::shared_ptr<AngleMeasureTool> Create(boost::weak_ptr<IViewport> viewport);

    ~AngleMeasureTool();

    void SetSide1End(ScenePoint2D start);
    void SetCenter(ScenePoint2D start);
    void SetSide2End(ScenePoint2D start);

    virtual bool HitTest(ScenePoint2D p) ORTHANC_OVERRIDE;
    virtual void Highlight(ScenePoint2D p) ORTHANC_OVERRIDE;
    virtual void ResetHighlightState() ORTHANC_OVERRIDE;
    virtual boost::shared_ptr<IFlexiblePointerTracker> CreateEditionTracker(const PointerEvent& e) ORTHANC_OVERRIDE;
    virtual boost::shared_ptr<MeasureToolMemento> GetMemento() const ORTHANC_OVERRIDE;
    virtual void SetMemento(boost::shared_ptr<MeasureToolMemento>) ORTHANC_OVERRIDE;
    virtual std::string GetDescription() ORTHANC_OVERRIDE;

    enum AngleHighlightArea
    {
      AngleHighlightArea_None,
      AngleHighlightArea_Side1End,
      AngleHighlightArea_Side1,
      AngleHighlightArea_Side2End,
      AngleHighlightArea_Side2,
      AngleHighlightArea_Center
    };


    AngleHighlightArea AngleHitTest(ScenePoint2D p) const;

  private:
    explicit AngleMeasureTool(boost::weak_ptr<IViewport> viewport);

    virtual void        RefreshScene() ORTHANC_OVERRIDE;
    void                RemoveFromScene();
    void                SetAngleHighlightArea(AngleHighlightArea area);

  private:
    ScenePoint2D                    side1End_;
    ScenePoint2D                    side2End_;
    ScenePoint2D                    center_;
    boost::shared_ptr<LayerHolder>  layerHolder_;
    AngleHighlightArea              angleHighlightArea_;
  };

  class AngleMeasureToolMemento : public MeasureToolMemento
  {
  public:
    ScenePoint2D                    side1End_;
    ScenePoint2D                    side2End_;
    ScenePoint2D                    center_;
  };
}