#include "gtl_gui_chart_line.h"

namespace gtl
{
    namespace gui
    {
        chart_line::chart_line(::chart::series::series *parent, Qt::Orientation orientation)
            : ::chart::instrument::primitive::line(parent)
            , _orientation(orientation)
            , _behavior(magnetic_to_sample)
        {
            setFlag(QGraphicsItem::ItemIsMovable, true);

            if(_orientation == Qt::Vertical)
                _cursor = Qt::SplitHCursor;
            else
                _cursor = Qt::SplitVCursor;

            _pen.setStyle(Qt::PenStyle::DashLine);

            set_pos(0);
        }

        void chart_line::set_pos(qreal x)
        {
            emit get_nearest_x(x, _behavior);
            if(_orientation == Qt::Vertical)
                set_line(x, 0, x, 1);
            else
                set_line(0, x, 1, x);
        }

        qreal chart_line::pos()
        {
            if(_orientation == Qt::Vertical)
                return _p0.x();
            else
                return _p0.y();
        }

        chart_line::pos_behaviors chart_line::behavior() const
        {
            return _behavior;
        }

        void chart_line::set_behavior(pos_behaviors behavior)
        {
            _behavior = behavior;
            set_pos(pos());
        }

        void chart_line::set_width(qreal value)
        {
            prepareGeometryChange();
            _pen.setWidth(value);
        }

        qreal chart_line::width() const
        {
            return _pen.width();
        }

        QVariant chart_line::itemChange(GraphicsItemChange change, const QVariant &value)
        {
            if (change == ItemPositionChange)
            {
                blockSignals(true);
                QVariant value0 = chart::instrument::primitive::line::itemChange(change, value);
                blockSignals(false);

                qreal x = pos();
//                emit get_nearest_x(x, _behavior);
                set_pos(x);


                emit signal_moved();

                return value0;

            }

            return chart::instrument::primitive::line::itemChange(change, value);
        }
    }
}