////  DockWidget.cpp//  libraries/ui/src////  Created by Dante Ruiz 05-07-2019//  Copyright 2019 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html//  #include "DockWidget.h" #include "OffscreenUi.h" #include <QtQml/QQmlEngine>#include <QtQml/QQmlContext>#include <QQuickView>#include <gl/GLHelpers.h> #include <PathUtils.h> static void quickViewDeleter(QQuickView* quickView) {    quickView->deleteLater();} DockWidget::DockWidget(const QString& title, QWidget* parent) : QDockWidget(title, parent) {    if (auto offscreenUI = DependencyManager::get<OffscreenUi>()) {        auto qmlEngine = offscreenUI->getSurfaceContext()->engine();        _quickView = std::shared_ptr<QQuickView>(new QQuickView(qmlEngine, nullptr), quickViewDeleter);        _quickView->setFormat(getDefaultOpenGLSurfaceFormat());        QWidget* widget = QWidget::createWindowContainer(_quickView.get());        setWidget(widget);        QWidget* headerWidget = new QWidget();        setTitleBarWidget(headerWidget);    }} void DockWidget::setSource(const QUrl& url) {    _quickView->setSource(url);} QQuickItem* DockWidget::getRootItem() const {    return _quickView->rootObject();} std::shared_ptr<QQuickView> DockWidget::getQuickView() const {    return _quickView;} void DockWidget::resizeEvent(QResizeEvent* event) {    // This signal is currently handled in `InteractiveWindow.cpp`. There, it's used to    // emit a `windowGeometryChanged()` signal, which is handled by scripts    // that need to know when to change the position of their overlay UI elements.    emit onResizeEvent();}