#include "graphicsItem/electricSvgItemPT.h"
#include "global.h"

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

ElectricSvgItemPT::ElectricSvgItemPT(const QRect &rect, QGraphicsItem *parent)
    : ElectricSvgItem(rect,parent)
{
    initial();
}

ElectricSvgItemPT::ElectricSvgItemPT(const ElectricSvgItemPT& obj)
    : ElectricSvgItem(obj)
{
    initial();
    _itemType = obj._itemType;
}

ElectricSvgItemPT::~ElectricSvgItemPT()
{

}

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

void ElectricSvgItemPT::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())
            return;
        m_pRender->render(painter, m_boundingRect);
    }
}

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