gcs-nf/opmap/mapwidget/circlepointitem.cpp

#include "circlepointitem.h"
#include "math.h"
#include "qgraphicssceneevent.h"
#include "qgraphicsview.h"

#define _USE_MATH_DEFINES


int CirclePointItem::number = 0;//组计数从1开始

CirclePointItem::CirclePointItem(mapcontrol::MapGraphicItem *map, QPointF const &p) :
    QGraphicsEllipseItem(map)
{
     this->setAcceptHoverEvents(true);
    _parentMap = map;
    setPos(p);

    number++;

    privatenumber = number;

    //参数框
    paramItem = new WayPointParamDialog;
    QPointF screenPos = this->screenPos(pos() );
    paramItem->move(screenPos.x() + 10, screenPos.y() );

    //外圆
    outside = new QGraphicsEllipseItem(-25, -25, 50, 50, this);
    QPen pen(QColor(255, 128, 0) );
    pen.setWidth(2);
    outside->setPen(pen);

    setBrush(QColor("#0174DF"));
    QPen pen1 = this->pen();
    pen1.setColor(QColor("#0174DF"));
    setPen(pen1);
    setRect(-10, -10, 20, 20);




    setAcceptDrops(true);
    setEnabled(true);
    this->setFlag(QGraphicsItem::ItemIgnoresTransformations, true);
//    this->setFlag(QGraphicsItem::ItemIsSelectable, true);
//    this->setFlag(QGraphicsItem::ItemIsMovable, true);

    connect(paramItem, &WayPointParamDialog::ok, this, &CirclePointItem::acceptedSlot,  Qt::DirectConnection );
    connect(paramItem, SIGNAL(ok() ), this, SIGNAL(accepted() ),  Qt::DirectConnection );
    connect(paramItem, SIGNAL(cancel() ), this, SIGNAL(rejected() ), Qt::DirectConnection );
    connect(paramItem, &WayPointParamDialog::remove,
            this, [this](){ this->isRemove = true;}, Qt::DirectConnection );

    connect(map, &mapcontrol::MapGraphicItem::childRefreshPosition, this,  &CirclePointItem::refreshPos);
    connect(map, &mapcontrol::MapGraphicItem::childRefreshPosition, this, &CirclePointItem::refreshOutSideEllipse);


}

CirclePointItem::~CirclePointItem()
{
    delete paramItem;
}




void CirclePointItem::autoParamDialogExex() const
{
//    QScreen *screen = qApp->primaryScreen();
    QScreen *screen = paramItem->screen();
    QPointF wayScreenPos(screenPos(mapToParent(QPointF(0, 0) ) ) );
    QPoint showPos(wayScreenPos.x(), wayScreenPos.y() );

    if( ((int)showPos.y() +  this->paramItem->size().height() ) > screen->size().height() )
    {
        showPos.setY(showPos.y() - paramItem->size().height() - 30);
    }



    paramItem->move(showPos);
    paramItem->exec();
}

QPointF CirclePointItem::screenPos(QPointF const &pos) const
{
    QGraphicsItem *map = parentItem();  //获取map
    QPointF scenePos = map->mapToScene(pos ); //获取pos在scene中的位置
    QList<QGraphicsView *> views = map->scene()->views();
    QPointF viewPos = views[0]->mapFromScene(scenePos); //获取航点在view中的位置

    return views[0]->mapToGlobal(QPoint(viewPos.x(), viewPos.y() ) ); //返回pos在屏幕中的位置
}

int CirclePointItem::radiusPixelLength(double angle) const
{
    double const arc = 6371393;

    //根据角度计算加上距离之后的经纬度
    internals::PointLatLng temp = latLng;
    double a = outsideRadius * qSin(angle) / (arc * qCos(latLng.Lat() ) * 2 * M_PI / 360);
    double b = outsideRadius * qCos(angle) / (arc * 2 * M_PI / 360);
    temp.SetLng(temp.Lng() + a);
    temp.SetLat(temp.Lat() + b);

    //把经纬度转换成map中的坐标系
    QPointF origin(_parentMap->FromLatLngToLocal(latLng).X(),  _parentMap->FromLatLngToLocal(latLng).Y() );
    QPointF end(_parentMap->FromLatLngToLocal(temp).X(),  _parentMap->FromLatLngToLocal(temp).Y() );

//    //把map坐标系转换成屏幕坐标系
//    origin = screenPos(origin);   //错误，当外圆半径太大时，无法计算
//    end = screenPos(end);

    QLineF line(origin, end);

    return line.length();
}

void CirclePointItem::refreshOutSideEllipse()
{
    int rad =  radiusPixelLength(0); //获取外圆的像素半径
    outside->setRect(-rad, -rad, rad * 2, rad * 2); //重新调整大小
    outside->update();  //重新绘制圆
}

void CirclePointItem::setCircleEdit(bool v)
{
    this->isCircleEdit = v;
//    this->setFlag(QGraphicsItem::ItemIsSelectable, v);
//    setFlag(QGraphicsItem::ItemIsMovable, v);

}

void CirclePointItem::setLngLat(double lng, double lat)
{
    this->latLng.SetLat(lat);
    this->latLng.SetLng(lng);

    paramItem->setlngLat(lng, lat);
}

void CirclePointItem::acceptedSlot()
{
    qDebug() << u8"circlePointItem: acceptedSlot";

    height = paramItem->height; //获取高度
    outsideRadius = paramItem->outsideRadius * 1000; //获取外圆半径
    direction = paramItem->direction;   //获取方向
    //获取经纬度
    latLng.SetLat(paramItem->latitude);
    latLng.SetLng(paramItem->longitude);
    QPointF mapPos(_parentMap->FromLatLngToLocal(latLng).X(),  _parentMap->FromLatLngToLocal(latLng).Y() );   //把经纬度转换成在map中的位置
    setPos(mapPos);

    refreshOutSideEllipse();
}

void CirclePointItem::refreshPos()
{
    core::Point point = _parentMap->FromLatLngToLocal(this->latLng);
    setPos(point.X(), point.Y() );
}

void CirclePointItem::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
{
    if(isCircleEdit)
    {
        autoParamDialogExex();
    }
}

void CirclePointItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
    QGraphicsEllipseItem::paint(painter, option, widget);

    painter->save();

    QPen myPen;
    QFont font;
    font.setWeight(QFont::ExtraLight);
    font.setFamily("Arial");//非衬线
    font.setPixelSize(12);
    painter->setFont(font);


    myPen.setWidth(1);
    myPen.setColor(QColor("#FFFFFF"));
    painter->setPen(myPen);
    painter->drawText(boundingRect(),Qt::AlignCenter,QString::number(privatenumber));

    painter->restore();


}

void CirclePointItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
     qDebug() << "CirclePointItem: press";

    if (event->button() == Qt::LeftButton) {

        emit cmd_long( 0,0,getRadius(),0, latLng.Lat(), latLng.Lng(),0,192,0);


    }
    //qgr::mousePressEvent(event);


    update();
}