SViewportRangeSelector.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_SVIEWPORTRANGESELECTOR_HPP__
#define __SCENE2D_ADAPTOR_SVIEWPORTRANGESELECTOR_HPP__

#include "scene2D/config.hpp"

#include <fwRenderQt/IAdaptor.hpp>

namespace scene2D
{
namespace adaptor
{

class SCENE2D_CLASS_API SViewportRangeSelector : public ::fwRenderQt::IAdaptor
{

public:
    fwCoreServiceClassDefinitionsMacro( (SViewportRangeSelector)(::fwRenderQt::IAdaptor) );
    SCENE2D_API SViewportRangeSelector() noexcept;
    SCENE2D_API ~SViewportRangeSelector() noexcept;

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;

    SCENE2D_API void updateViewportFromShutter( double x, double y, double width, double height );

    SCENE2D_API KeyConnectionsMap getAutoConnections() const override;

private:

    QGraphicsRectItem* m_shutter;
    bool m_isLeftInteracting;                       // interaction onto shutter's left border
    bool m_isRightInteracting;                      // interaction onto shutter's right border
    bool m_isInteracting;                           // interaction onto the whole shutter
    ::fwRenderQt::data::Coord m_dragStartPoint;        // dragging origin point
    ::fwRenderQt::data::Coord m_dragStartShutterPos;   // shutter position when dragging starts

    const int m_clickCatchRange;

    QGraphicsItemGroup* m_layer;

    float m_initialX;

    float m_initialWidth;

    bool mouseOnShutterLeft( ::fwRenderQt::data::Coord _coord);

    bool mouseOnShutterRight( ::fwRenderQt::data::Coord _coord);

    bool mouseOnShutterMiddle( ::fwRenderQt::data::Coord _coord);
};

}   // namespace adaptor
}   // namespace scene2D

#endif  // __SCENE2D_ADAPTOR_SVIEWPORTRANGESELECTOR_HPP__