#include "graphicsItem/functionModelItem/electricFunctionModelItemText.h"
#include "graphicsDataModel/fixedPortsModel.h"
#include "baseProperty.h"

#include <QPainter>
#include <QStyleOption>
#include <QGraphicsScene>
#include <QGraphicsView>

ElectricFunctionModelItemText::ElectricFunctionModelItemText(QGraphicsItem *parent)
    : GraphicsFunctionModelItem(parent)
{
    initial();
}

ElectricFunctionModelItemText::~ElectricFunctionModelItemText()
{

}

void ElectricFunctionModelItemText::setText(const QString& text)
{
    if (m_text != text) {
        m_text = text;
        updateBoundingRect();
        update();  // 触发重绘
        // 标记为已修改
        setItemChanged(true);
        auto pPro = dynamic_cast<GraphicProperty*>(getProperty());
        if(pPro){
            pPro->setContent(text);     //同步修改属性值
        }
    }
}

void ElectricFunctionModelItemText::setTextColor(const QColor& color)
{
    m_textColor = color;
}

void ElectricFunctionModelItemText::setFontSize(int n)
{
    if(n>0 && n <100){
        m_font.setPointSize(n);
        updateBoundingRect();
    }
}

void ElectricFunctionModelItemText::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
    // 1. 绘制背景
    if (m_backgroundVisible) {
        painter->setBrush(m_backgroundColor);
        painter->setPen(Qt::NoPen);
        painter->drawRect(m_boundingRect);
    }

    // 2. 绘制文本
    painter->setFont(m_font);
    painter->setPen(m_textColor);

    QRectF textRect = m_boundingRect.adjusted(2, 2, -2, -2);
    painter->drawText(textRect, Qt::AlignCenter, m_text);

    // 3. 调用基类绘制（选中框、控制点）
    if (option->state & QStyle::State_Selected) //是选中状态,绘制选中框
    {
        renderSelectBackground(painter);
    }
    GraphicsFunctionModelItem::paint(painter,option,widget);
}

void ElectricFunctionModelItemText::initial()
{
    setHandleIfShow(H_textCaption,false);
    setHandleVisible(false);
    setFunctionHandleIfShow(false);
    setFunctionHandleEnaable(false);

    m_boundingRect = QRectF(0, 0, 50, 20);      //初始化为定值
}

void ElectricFunctionModelItemText::updateBoundingRect()
{
    if (m_text.isEmpty()) {
        m_boundingRect = QRectF(0, 0, 50, 20);
    } else {
        QFontMetricsF fm(m_font);
        QRectF textRect = fm.boundingRect(m_text);
        m_boundingRect = textRect.adjusted(-4, -4, 4, 4);
    }

    // 更新基类边界
    AbstractShapeType<QGraphicsItem>::setBoundingRect(m_boundingRect);

    // 更新控制点
    updateHandles();
}