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++ // Copyright (C) 2023 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "q3dviewer.h"
++
++ #include <QApplication>
++ #include <QMimeData>
++ #include <QFile>
++ #include <QFileInfo>
++ #include <QCryptographicHash>
++ #include <QMimeDatabase>
++
++ #include <QWidget>
++
++ #include <QQmlEngine>
++ #include <QQmlComponent>
++ #include <QQuickView>
++ #include <QQuickItem>
++ #include <QQuick3D>
++
++ #ifdef DOCUMENTVIEWER_PRINTSUPPORT
++ #include <QPrinter>
++ #include <QPainter>
++ #endif
++
++ using namespace Qt::StringLiterals;
++
++ Q3DViewer::Q3DViewer()
++ {
++ connect(this, &AbstractViewer::uiInitialized, this, &Q3DViewer::openQ3DFile);
++ }
++
++ void Q3DViewer::init(QFile *file, QWidget *parent, QMainWindow *mainWindow)
++ {
++ QSurfaceFormat::setDefaultFormat(QQuick3D::idealSurfaceFormat());
++ setTranslationBaseName("q3dviewer"_L1);
++ m_quickView = new QQuickView;
++ m_quickView->loadFromModule(u"Q3DViewer", "Viewer");
++ Q_ASSERT(m_quickView->status() != QQuickView::Status::Error);
++ AbstractViewer::init(file, QWidget::createWindowContainer(m_quickView, parent), mainWindow);
++ }
++
++ Q3DViewer::~Q3DViewer()
++ {
++ Q3DViewer::cleanup();
++ }
++
++ void Q3DViewer::cleanup()
++ {
++ if (!m_quickView)
++ return;
++
++ delete m_quickView;
++ m_quickView = nullptr;
++ }
++
++ QStringList Q3DViewer::supportedMimeTypes() const
++ {
++ static QStringList mimeTypes;
++ static bool mimeTypesSearched = false;
++ if (mimeTypesSearched)
++ return mimeTypes;
++
++ mimeTypesSearched = true;
++
++ QQmlEngine engine;
++ QQmlComponent component(&engine);
++ component.loadFromModule(u"Q3DViewer", "QueryMimeTypes");
++ std::unique_ptr<QObject> loader(component.create());
++ if (!loader)
++ return {};
++
++ const auto &mt = qvariant_cast<QList<QMimeType>>(loader->property("supportedMimeTypes"));
++ for (const auto &type : mt)
++ mimeTypes << type.name();
++ return mimeTypes;
++ }
++
++ bool Q3DViewer::openQ3DFile()
++ {
++ Q_ASSERT(m_file);
++
++ if (!m_quickView || !m_file->open(QIODevice::ReadOnly))
++ return false;
++
++ const auto fileName = QUrl::fromLocalFile(QFileInfo(*m_file).absoluteFilePath());
++ m_quickView->rootObject()->setProperty("isMesh", type() == FileType::Mesh);
++ m_quickView->rootObject()->setProperty("fileName", fileName);
++ m_quickView->show();
++
++ return true;
++ }
++
++ Q3DViewer::FileType Q3DViewer::type() const
++ {
++ Q_ASSERT(m_file);
++ return (QFileInfo(*m_file).suffix() == "mesh"_L1) ? FileType::Mesh : FileType::External;
++ }
++
++ bool Q3DViewer::hasContent() const
++ {
++ return false;
++ }
++
++ #ifdef DOCUMENTVIEWER_PRINTSUPPORT
++ void Q3DViewer::printDocument(QPrinter *printer) const
++ {
++ Q_UNUSED(printer);
++ }
++ #endif // DOCUMENTVIEWER_PRINTSUPPORT
++
++ QByteArray Q3DViewer::saveState() const
++ {
++ QByteArray array;
++ QDataStream stream(&array, QIODevice::WriteOnly);
++ stream << QString(viewerName());
++ return array;
++ }
++
++ bool Q3DViewer::restoreState(QByteArray &array)
++ {
++ QDataStream stream(&array, QIODevice::ReadOnly);
++ QString viewer;
++ stream >> viewer;
++ if (viewer != viewerName())
++ return false;
++ return true;
++ }