DiagramDesigner/diagramCavas/source/graphicsItem/electricBayItem.cpp

#include "graphicsItem/electricBayItem.h"
#include <QPainter>
#include <QDebug>
#include <QStyleOption>

ElectricBayItem::ElectricBayItem(const QRectF &rect,QGraphicsItem *parent)
    : GraphicsNonStandardItem(parent)
{
    m_showRect = rect;
    //m_boundingRect = rect;
    m_dWidth = rect.width();
    m_dHeight = rect.height();
    m_font.setPointSize(12);
}

ElectricBayItem::~ElectricBayItem()
{

}

void ElectricBayItem::setText(const QString& text)
{
    prepareGeometryChange(); // 通知框架几何变化
    m_text = text;
    updateTextShape();
}

QPainterPath ElectricBayItem::shape()
{
    QPainterPath path;
    path.addRect(_recLabel);
    return path;
}

void ElectricBayItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
    painter->setPen(m_pen);
    painter->drawText(_recLabel,m_text);
    m_pen.setStyle(Qt::DashLine);
    if (option->state & QStyle::State_Selected) //是选中状态,绘制选中框
    {
        painter->drawRect(m_showRect);
    }

}

void ElectricBayItem::updateTextShape()
{
    QFontMetricsF metrics(m_font);
    QRectF recText = metrics.boundingRect(m_text);
    //_recLabel = recText.translated(g_offsetX,g_offsetY);
    recText.moveTo(m_showRect.topLeft()-QPointF(recText.width(),recText.height()));
    _recLabel = recText;
    shape();
}