#include "graphicsItem/functionModelItem/electricFunctionModelSvgItemPT.h"

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

ElectricFunctionModelSvgItemPT::ElectricFunctionModelSvgItemPT(const QRect &rect, QGraphicsItem *parent)
    : ElectricFunctionModelSvgItem(rect,parent)
{
    initial();
}

ElectricFunctionModelSvgItemPT::ElectricFunctionModelSvgItemPT(const ElectricFunctionModelSvgItemPT& obj)
    : ElectricFunctionModelSvgItem(obj)
{
    initial();
    _itemType = obj._itemType;
}

ElectricFunctionModelSvgItemPT::~ElectricFunctionModelSvgItemPT()
{

}

ElectricFunctionModelSvgItemPT* ElectricFunctionModelSvgItemPT::clone() const
{
    return new ElectricFunctionModelSvgItemPT(*this);
}

void ElectricFunctionModelSvgItemPT::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
    if(_curMonitorStateEnable){

        painter->setRenderHint(QPainter::Antialiasing);

        QSize imageSize = m_boundingRect.size().toSize();
        if (imageSize.isEmpty()) return;

        // 1. 渲染SVG到图像
        QImage sourceImage(imageSize, QImage::Format_ARGB32_Premultiplied);
        sourceImage.fill(Qt::transparent);

        QPainter sourcePainter(&sourceImage);
        sourcePainter.setRenderHint(QPainter::Antialiasing);
        m_pCustomRender->render(&sourcePainter, QRectF(0, 0, imageSize.width(), imageSize.height()));
        sourcePainter.end();

        // 2. 直接使用合成模式改变颜色（更高效）
        QImage resultImage(imageSize, QImage::Format_ARGB32_Premultiplied);
        resultImage.fill(Qt::transparent);

        QPainter resultPainter(&resultImage);

        // 先绘制原始SVG（保留透明度）
        resultPainter.drawImage(0, 0, sourceImage);

        // 然后对非透明区域应用颜色叠加
        resultPainter.setCompositionMode(QPainter::CompositionMode_SourceIn);
        resultPainter.fillRect(resultImage.rect(), QColor(_curMonitorStateColor));
        resultPainter.end();

        // 3. 最终绘制
        painter->drawImage(m_boundingRect, resultImage);
    }
    else{
        if (!m_pRender || !m_pRender->isValid())
        {
            painter->setBrush(QBrush(QColor(230, 230, 230))); // 浅灰白，未设置图片
            // 2. 设置虚线画笔
            QPen pen(QColor(160, 160, 160));
            pen.setStyle(Qt::DashLine);
            pen.setWidth(1);
            painter->setPen(pen);
            // 3. 绘制基础矩形
            painter->drawRoundedRect(boundingRect(), 2, 2);
        }
        else
            m_pRender->render(painter, m_boundingRect);
    }
}

void ElectricFunctionModelSvgItemPT::initial()
{
    setFlag(QGraphicsItem::ItemIsSelectable, false);
    setFlag(QGraphicsItem::ItemIsFocusable, false);
    setAcceptedMouseButtons(Qt::NoButton);
}