#include "light.h"
#include <QPainter>
#include <QStyleOptionGraphicsItem>
#include <QMenu>
#include <QFileDialog>

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

}

QRectF Light::boundingRect() const
{
    return QRectF(0, 0, 50, 50);
}

void Light::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *)
{
    painter->setRenderHint(QPainter::Antialiasing);

    if (type_ == "指示灯") {
        if (state() && !onPixmap_.isNull()) {
            painter->drawPixmap(0, 0, 50, 50, onPixmap_);
        } else if (!state() && !offPixmap_.isNull()) {
            painter->drawPixmap(0, 0, 50, 50, offPixmap_);
        } else {
            if (state()) {
                painter->setBrush(Qt::green); // 激活状态
            } else {
                painter->setBrush(Qt::white); // 未激活状态
            }
            painter->drawEllipse(0,0,50,50);
        }
    }
    if (!registerId_.isEmpty()) {
        painter->save();
        painter->setFont(QFont("Arial", 8));
        painter->setPen(Qt::black);
        QString text = QString("%1").arg(registerId());
        painter->drawText(QRectF(13, 13, 26, 26), Qt::AlignCenter, text);
        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());
    }
}

bool Light::state() const
{
    return registerValue_ > 0;
}

void Light::addMenuActions(QMenu *menu)
{
    menu->addAction("ON外观设置");
    menu->addAction("OFF外观设置");
}

void Light::handleMenuAction(QAction *action)
{
    if (action->text() == "复制") {
        emit requestCopy(this);
    }
    if (action->text() == "删除") {
        emit requestDelete(this);
    }
    if (action->text() == "对象"){
        emit requestBindRegister(this);
    }
    if (action->text() == "重置"){
        emit requestReset(this);
    }
    if (action->text() == "ON外观设置"){
        QString fileName = QFileDialog::getOpenFileName(nullptr,
                                                        "选择图片",
                                                        "",
                                                        "图片文件(*.png *.jpg *.bmp)");
        if (!fileName.isEmpty())
        {
            setOnImage(fileName);
        }
    }
    if (action->text() == "OFF外观设置"){
        QString fileName = QFileDialog::getOpenFileName(nullptr,
                                                        "选择图片",
                                                        "",
                                                        "图片文件(*.png *.jpg *.bmp)");
        if (!fileName.isEmpty())
        {
            setOffImage(fileName);
        }
    }
}

void Light::setOnImage(const QString& imagePath)
{
    onImagePath_ = imagePath;
    loadImage();
    update();
}

void Light::setOffImage(const QString &imagePath)
{
    offImagePath_ = imagePath;
    loadImage();
    update();
}

void Light::loadImage()
{
    if (!onImagePath_.isEmpty()) {
        onPixmap_ = QPixmap(onImagePath_);
        if (!onPixmap_.isNull()) {
            onPixmap_ = onPixmap_.scaled(50, 50, Qt::KeepAspectRatio, Qt::SmoothTransformation);
        }
    }
    if (!offImagePath_.isEmpty()) {
        offPixmap_ = QPixmap(offImagePath_);
        if (!offPixmap_.isNull()) {
            offPixmap_ = offPixmap_.scaled(50, 50, Qt::KeepAspectRatio, Qt::SmoothTransformation);
        }
    }
}