#include "graphicslineitem.h"

graphicsLineItem::graphicsLineItem(QObject *parent)

{
    x0 = x1 = y0 = y1 = wid = 0;
    drawCircles = 0;
    col = QColor(Qt::black);
}

QRectF graphicsLineItem::boundingRect() const
{
    QPointF p1;
    if (x0>x1) {
        if (y0>y1)  p1 = QPointF(x1, y1);
            else    p1 = QPointF(x1, y0);
    }
    else
    {
        if (y0>y1)  p1 = QPointF(x0, y1);
            else    p1 = QPointF(x0, y0);
    }

    QSizeF s = QSizeF(fabs(x0-x1), fabs(y0-y1));

    return QRectF(p1, s);
}

void graphicsLineItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{

    QPen p;
    QFont f  = painter->font();



    p.setColor(col);
    p.setWidthF(wid);
    p.setCapStyle(Qt::FlatCap);

    painter->setPen(p);
    painter->setBrush(QBrush(Qt::SolidPattern));
    painter->drawLine(QPointF(x0,y0), QPointF(x1, y1));
    if (drawCircles&0x1) painter->drawEllipse(QPointF(x0,y0), wid*1.5, wid*1.5);
    if (drawCircles&0x2) painter->drawEllipse(QPointF(x1,y1), wid*1.5, wid*1.5);


    painter->save();
    for (int i=0; i<2; i++)
    {
        if (! str[i].txt.isEmpty())
        {
            p.setColor(str[i].col);
            f.setPointSizeF(str[i].size);

            painter->setFont(f);
            painter->setPen(p);
            painter->drawText(str[i].pos, str[i].txt);
        }
    }
    painter->restore();

}

void graphicsLineItem::setCircles(bool f1, bool f2)
{
    int ret = 0x0;
    if (f1) ret+=0x1;
    if (f2) ret+=0x2;
    drawCircles=ret;
}

void graphicsLineItem::setColor(QColor c)
{
    if (col!=c)
    {
        prepareGeometryChange();
        col = c;
    }
}

QPointF graphicsLineItem::pos0() {return QPointF(x0,y0);}
QPointF graphicsLineItem::pos1() {return QPointF(x1,y1);}

void graphicsLineItem::setPos0(QPointF p)
{
    qreal x, y;
    x= p.x(); y= p.y();

    if ((x0!=x)||(y0!=y) )  {
        prepareGeometryChange();
        x0=x; y0=y;
    }
}







void graphicsLineItem::setPos1(QPointF p)
{
    qreal x, y;
    x= p.x(); y= p.y();

    if ((x1!=x)||(y1!=y) )  {
        prepareGeometryChange();
        x1=x; y1=y;
    }
}

qreal graphicsLineItem::length()
{
    QLineF lf = QLineF(x0,y0,x1,y1);
    return lf.length();
}

void graphicsLineItem::setLength(qreal l)
{
    QLineF lf = QLineF(x0,y0,x1,y1);
    lf.setLength(l);

    QPointF p = lf.p2();

    if ((x1!=p.x())||(y1!=p.y())) {
        prepareGeometryChange();
        x1=p.x(); y1=p.y();
    }
}

void graphicsLineItem::setAngle(qreal a)
{
    QLineF lf = QLineF(x0,y0,x1,y1);
    lf.setAngle(a);

    QPointF p = lf.p2();

    if ((x1!=p.x())||(y1!=p.y())) {
        prepareGeometryChange();
        x1=p.x(); y1=p.y();
    }

}

void graphicsLineItem::setGlobalAngle(qreal a)  // поворот линии относительно точки 0,0
{
    QLineF lf, lf1;

    lf = QLineF(0,0,x0,y0);
    lf.setAngle(a);
    QPointF p = lf.p2();
    lf1 = QLineF(0,0,x1,y1);
    lf1.setAngle(a);
    QPointF p1 = lf1.p2();

    if ((x0!=p.x())||(y0!=p.y())||(x1!=p1.x())||(y1!=p1.y())) {
        prepareGeometryChange();
        x0=p.x(); y0=p.y();
        x1=p1.x(); y1=p1.y();
    }

}

void graphicsLineItem::setWidth(qreal w)
{
    if (wid!=w) {
        prepareGeometryChange();
        wid = w;
    }
}



void graphicsLineItem::setText(QString s, int d)
{
    if ((d==0)||(d==1))
        if (str[d].txt!=s)
        {
            prepareGeometryChange();
            str[d].txt = s;
        }
}

void graphicsLineItem::setTextPos(QPointF p, int d)
{
    if ((d==0)||(d==1))
        if (str[d].pos!=p) {
            prepareGeometryChange();
            str[d].pos = p;
        }
}

void graphicsLineItem::setTextColor(QColor c, int d)
{
    if ((d==0)||(d==1))
    if (str[d].col!=c) {
        prepareGeometryChange();
        str[d].col = c;
    }
}

QString graphicsLineItem::getText(int d)
{
    if ((d==0)||(d==1))    return str[d].txt;
        else return 0;

}

QColor graphicsLineItem::getTextColor(int d)
{
    if ((d==0)||(d==1))     return str[d].col;
    else return QColor(Qt::black);

}

QPointF graphicsLineItem::getTextPos(int d)
{
    if ((d==0)||(d==1))  return str[d].pos;
    else return QPointF(0,0);
}

qreal graphicsLineItem::getTextSize(int d)
{
    if ((d==0)||(d==1))
        return str[d].size;
    else return 0;
}

void graphicsLineItem::setTextSize(qreal s, int d)
{
    if ((d==0)||(d==1))
    if (str[d].size!=s) {
        prepareGeometryChange();
        str[d].size = s;
    }
}