SHistogramCursor.hpp

/* ***** BEGIN LICENSE BLOCK *****
 * FW4SPL - Copyright (C) IRCAD, 2009-2017.
 * Distributed under the terms of the GNU Lesser General Public License (LGPL) as
 * published by the Free Software Foundation.
 * ****** END LICENSE BLOCK ****** */

#ifndef __SCENE2D_ADAPTOR_SHISTOGRAMCURSOR_HPP__
#define __SCENE2D_ADAPTOR_SHISTOGRAMCURSOR_HPP__

#include "scene2D/config.hpp"

#include <fwRenderQt/data/Viewport.hpp>
#include <fwRenderQt/IAdaptor.hpp>

#include <QGraphicsTextItem>

namespace scene2D
{
namespace adaptor
{

class SHistogramCursor : public ::fwRenderQt::IAdaptor
{

public:
    fwCoreServiceClassDefinitionsMacro( (SHistogramCursor)(::fwRenderQt::IAdaptor) );

    SCENE2D_API SHistogramCursor() noexcept;
    SCENE2D_API virtual ~SHistogramCursor() noexcept;

    SCENE2D_API ::fwServices::IService::KeyConnectionsMap getAutoConnections() const override;

protected:
    SCENE2D_API void configuring() override;
    SCENE2D_API void starting() override;
    SCENE2D_API void updating() override;
    SCENE2D_API void stopping() override;

    SCENE2D_API void processInteraction( ::fwRenderQt::data::Event& _event ) override;

    QPen m_color;

    QPen m_borderColor;

    // A graphics item that is located onto hsitogram's upper border and moves along this border
    // according to the position of mouse's cursor. The goal of this graphical index is to show
    // the associated value within the histogram pointed buy this index.
    QGraphicsEllipseItem* m_index;

    ::fwRenderQt::data::Coord m_coord;

    float m_pointSize;

    QGraphicsItemGroup* m_layer;
};

}   // namespace adaptor
}   // namespace scene2D

#endif  // __SCENE2D_ADAPTOR_SHISTOGRAMCURSOR_HPP__