editor/contact.cpp

#include "contact.h"
#include <QPainter>
#include <QStyleOptionGraphicsItem>

Contact::Contact(const QString &type) : Item(type)
{

}

void Contact::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *)
{
    painter->setRenderHint(QPainter::Antialiasing);
    if (type_ == "常开") {
        painter->drawLine(-12, 0, -4, 0);
        painter->drawLine(-4, -8, -4, 8);
        painter->drawLine(4, -8, 4, 8);
        painter->drawLine(4, 0, 12, 0);

        // 锚点
        painter->setBrush(Qt::darkGray);
        painter->setPen(Qt::NoPen);
        painter->drawEllipse(QPointF(-18, 0), 4, 4);   // 左
        painter->drawEllipse(QPointF(18, 0), 4, 4);    // 右
    }
    else if (type_ == "常闭") {
        painter->drawLine(-15, -10, 15, 10); // 对角线
        painter->drawLine(-12, 0, -4, 0);
        painter->drawLine(-4, -8, -4, 8);
        painter->drawLine(4, -8, 4, 8);
        painter->drawLine(4, 0, 12, 0);

        // 锚点
        painter->setBrush(Qt::darkGray);
        painter->setPen(Qt::NoPen);
        painter->drawEllipse(QPointF(-18, 0), 4, 4);   // 左
        painter->drawEllipse(QPointF(18, 0), 4, 4);    // 右
    }
      if (option->state & QStyle::State_Selected) {
            QPen pen(Qt::DashLine);
            pen.setColor(Qt::blue);
            pen.setWidth(2);
            painter->setPen(pen);
            painter->setBrush(Qt::NoBrush);
            painter->drawRect(boundingRect());
        }
}