File indexing completed on 2024-12-08 04:20:24

 /*
  * SPDX-License-Identifier: LGPL-2.0-or-later
  *
  * SPDX-FileCopyrightText: 2022 Aleix Pol Gonzalez <aleixpol@kde.org>
  */
 
 #include "xdgexporterv2.h"
 
 #include <qpa/qplatformnativeinterface.h>
 #include <QDebug>
 #include <QGuiApplication>
 #include <QWindow>
 #include <QWidget>
 
 class WidgetWatcher : public QObject
 {
 public:
     WidgetWatcher(XdgExporterV2 *exporter, XdgExportedV2 *toExport, QWidget *theWidget)
         : QObject(theWidget)
         , m_toExport(toExport)
         , m_widget(theWidget)
         , m_exporter(exporter)
     {
         theWidget->installEventFilter(this);
     }
 
     ~WidgetWatcher() {
         delete m_toExport;
     }
 
     bool eventFilter(QObject * watched, QEvent * event) override {
         Q_ASSERT(watched == parent());
         if (event->type() == QEvent::PlatformSurface) {
             m_toExport->setWindow(m_widget->windowHandle());
         }
         return false;
     }
 
     QPointer<XdgExportedV2> m_toExport;
     QWidget *const m_widget;
     XdgExporterV2 *const m_exporter;
 };
 
 XdgExportedV2::XdgExportedV2(XdgExporterV2* exporter)
     : QtWayland::zxdg_exported_v2()
     , m_exporter(exporter)
 {
 }
 
 XdgExportedV2::~XdgExportedV2()
 {
     destroy();
 }
 
 void XdgExportedV2::setWindow(QWindow* window) {
     Q_ASSERT(window);
 
     useWindow(window);
     connect(window, &QWindow::visibilityChanged, this, [this, window] (QWindow::Visibility visibility) {
         if (visibility != QWindow::Hidden) {
             useWindow(window);
         }
     });
     connect(window, &QWindow::destroyed, this, &QObject::deleteLater);
 }
 
 void XdgExportedV2::useWindow(QWindow* window)
 {
     QPlatformNativeInterface *nativeInterface = qGuiApp->platformNativeInterface();
     auto surface = static_cast<wl_surface *>(nativeInterface->nativeResourceForWindow("surface", window));
     if (surface) {
         auto tl = m_exporter->export_toplevel(surface);
         if (tl) {
             init(tl);
         } else {
             qDebug() << "could not export top level";
         }
     } else {
         qDebug() << "could not get surface";
     }
 }
 
 std::optional<QString> XdgExportedV2::handle() const
 {
     return m_handle;
 }
 
 ///////////////////////////////////////////////////////////
 
 XdgExporterV2::XdgExporterV2()
     : QWaylandClientExtensionTemplate(ZXDG_EXPORTER_V2_DESTROY_SINCE_VERSION)
 {
     initialize();
 
     if (!isInitialized()) {
         qWarning() << "Remember requesting the interface on your desktop file: X-KDE-Wayland-Interfaces=zkde_screencast_unstable_v1";
     }
     Q_ASSERT(isInitialized());
 }
 
 XdgExporterV2::~XdgExporterV2()
 {
     destroy();
 }
 
 XdgExportedV2* XdgExporterV2::exportWindow(QWindow* window)
 {
     if (!window) {
         qDebug() << "no window!";
         return nullptr;
     }
 
     auto exported = new XdgExportedV2(this);
     exported->setWindow(window);
     return exported;
 }
 
 XdgExportedV2* XdgExporterV2::exportWidget(QWidget* widget)
 {
     if (widget->windowHandle()) {
         return exportWindow(widget->windowHandle());
     }
     auto nakedExporter = new XdgExportedV2(this);
     new WidgetWatcher(this, nakedExporter, widget);
     return nakedExporter;
 }