hotloader.hpp

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//
// Created by ColorsWind on 2022/5/2.
//
 
#ifndef PONYPLAYER_HOTLOADER_H
#define PONYPLAYER_HOTLOADER_H
#include <QtCore>
#include <QQmlApplicationEngine>
#include <QQuickView>
#include <filesystem>
 
class HotLoader : public QObject {
    Q_OBJECT
private:
    QQmlApplicationEngine *engine;
public:
    explicit HotLoader(QQmlApplicationEngine *e): engine(e) {
        qDebug() << "Construct HotLoader.";
    }
 
    Q_INVOKABLE void reload() {
#ifdef QT_DEBUG
        static std::string mainQML = std::filesystem::path(__FILE__).parent_path().string() + "/view/main.qml";
        auto *rootObject = engine->rootObjects().first();
        auto* mainWindow = qobject_cast<QQuickWindow*>(rootObject);
        Q_ASSERT( mainWindow != nullptr );
        mainWindow->close();
        engine->clearComponentCache();
        mainWindow->deleteLater();
        engine->load(QUrl::fromLocalFile(QString::fromUtf8(mainQML)));
        qWarning() << "Complete hot reloading.";
#else
        Q_UNUSED(engine)
#endif
    }
 
    Q_INVOKABLE void crash() {
#ifdef QT_DEBUG
        throw std::runtime_error("Crash Test!");
#endif
    }
};
 
#endif //PONYPLAYER_HOTLOADER_H