Method loadDeclarativeEffect

src/effect/effectloader.cpp:167–205

}

bool ScriptedEffectLoader::loadDeclarativeEffect(const KPluginMetaData &metadata)
{
    const QString name = metadata.pluginId();
    QString scriptFile = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QLatin1StringView("kwin-wayland/effects/") + name + QLatin1StringView("/contents/ui/main.qml"));
    if (scriptFile.isNull()) {
        scriptFile = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QLatin1StringView("kwin/effects/") + name + QLatin1StringView("/contents/ui/main.qml"));
        if (scriptFile.isNull()) {
            qCWarning(KWIN_CORE) << "Could not locate the effect script";
            return false;
        }
    }

    QQmlEngine *engine = Scripting::self()->qmlEngine();
    QQmlComponent component(engine);
    component.loadUrl(QUrl::fromLocalFile(scriptFile));
    if (component.isError()) {
        qCWarning(KWIN_CORE).nospace() << "Failed to load " << scriptFile << ": " << component.errors();
        return false;
    }

    QObject *object = component.beginCreate(engine->rootContext());
    auto effect = qobject_cast<ScriptedQuickSceneEffect *>(object);
    if (!effect) {
        qCDebug(KWIN_CORE) << "Could not initialize scripted effect: " << name;
        delete object;
        return false;
    }
    effect->setMetaData(metadata);
    component.completeCreate();

    connect(effect, &Effect::destroyed, this, [this, name]() {
        m_loadedEffects.removeAll(name);
    });

    qCDebug(KWIN_CORE) << "Successfully loaded scripted effect: " << name;
    Q_EMIT effectLoaded(effect, name);
    m_loadedEffects << name;
    return true;
}

void ScriptedEffectLoader::queryAndLoadAll()
{