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

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

}

void Comparator::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *)
{
    painter->setRenderHint(QPainter::Antialiasing);
    if (type_ == "比较") {
        painter->drawRect(QRectF(-12, -8, 24, 16));
        painter->setFont(QFont("Arial", 8));
        painter->drawText(QRectF(-10, -8, 20, 16), Qt::AlignCenter, "CP");

        // 锚点
        painter->setBrush(Qt::darkGray);
        painter->setPen(Qt::NoPen);
        painter->drawEllipse(QPointF(-18, 0), 4, 4);
        painter->drawEllipse(QPointF(18, 0), 4, 4);
    }
    if (!registerId_.isEmpty()) {
        painter->save();
        painter->setFont(QFont("Arial", 8));
        painter->setPen(Qt::black);
        // 在元件底部居中绘制寄存器ID
        painter->drawText(boundingRect().adjusted(0, 20, 0, 0),
                         Qt::AlignCenter, registerId_);
        painter->restore();
    }
    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());
    }
}