#include "util/connectingSelector.h"
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsView>
#include <graphicsItem/graphicsBaseItem.h>

ConnectingSelector::ConnectingSelector(QObject *parent)
    : BaseSelector(parent),m_pConnectingItem(nullptr)
{
    m_type = ST_connecting;
}
ConnectingSelector::~ConnectingSelector()
{

}

void ConnectingSelector::mousePressEvent(QGraphicsSceneMouseEvent* event, DesignerScene* scene)
{
    ms_ptMouseLast = event->scenePos();

}

void ConnectingSelector::mouseMoveEvent(QGraphicsSceneMouseEvent* event, DesignerScene* scene)
{
    ms_ptMouseLast = event->scenePos();
    if(m_pConnectingItem == nullptr)
    {
        QList<QGraphicsItem *> items = scene->selectedItems();
        if (items.count() == 1)
        {
            GraphicsBaseItem* item = qgraphicsitem_cast<GraphicsBaseItem*>(items.first());
            if(item)
            {
                if(ms_nDragHandle != H_none)
                {
                    item->setState(S_lineOut);
                    QPointF start = item->mapFromScene(ms_ptMouseDown);
                    QPointF end = item->mapFromScene(ms_ptMouseLast);
                    item->setBeginConnectPos(start);
                    item->setEndConnectPos(end);
                    m_pConnectingItem = item;
                }
            }
        }
    }
    else
    {
        if(m_pConnectingItem)
        {
            QPointF end = m_pConnectingItem->mapFromScene(ms_ptMouseLast);
            m_pConnectingItem->setEndConnectPos(end);
        }
    }

}

void ConnectingSelector::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, DesignerScene* scene)
{
    if(m_pConnectingItem)
        m_pConnectingItem->setState(S_normal);
    m_pConnectingItem = nullptr;
    ms_nDragHandle = H_none;
    setCursor(scene, Qt::ArrowCursor);
    scene->callParentEvent(event);
    emit setWorkingSelector(ST_base);
}