File indexing completed on 2024-05-05 17:42:26

 /*  This file is part of the KDE libraries
     SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 #include "kwaylandintegration.h"
 
 #include <QExposeEvent>
 #include <QGuiApplication>
 #include <QWindow>
 #include <qpa/qplatformnativeinterface.h>
 #include <qtwaylandclientversion.h>
 
 #include "qdbusmenubar_p.h"
 #include "qwayland-appmenu.h"
 #include "qwayland-server-decoration-palette.h"
 
 #include <KWindowEffects>
 
 static const QByteArray s_schemePropertyName = QByteArrayLiteral("KDE_COLOR_SCHEME_PATH");
 static const QByteArray s_blurBehindPropertyName = QByteArrayLiteral("ENABLE_BLUR_BEHIND_HINT");
 
 class AppMenuManager : public QWaylandClientExtensionTemplate<AppMenuManager>, public QtWayland::org_kde_kwin_appmenu_manager
 {
     Q_OBJECT
 public:
     AppMenuManager()
         : QWaylandClientExtensionTemplate<AppMenuManager>(1)
     {
 #if QTWAYLANDCLIENT_VERSION >= QT_VERSION_CHECK(6, 2, 0)
         initialize();
 #else
         // QWaylandClientExtensionTemplate invokes this with a QueuedConnection
         QMetaObject::invokeMethod(this, "addRegistryListener");
 #endif
     }
 };
 
 class ServerSideDecorationPaletteManager : public QWaylandClientExtensionTemplate<ServerSideDecorationPaletteManager>,
                                            public QtWayland::org_kde_kwin_server_decoration_palette_manager
 {
     Q_OBJECT
 public:
     ServerSideDecorationPaletteManager()
         : QWaylandClientExtensionTemplate<ServerSideDecorationPaletteManager>(1)
     {
 #if QTWAYLANDCLIENT_VERSION >= QT_VERSION_CHECK(6, 2, 0)
         initialize();
 #else
         // QWaylandClientExtensionTemplate invokes this with a QueuedConnection
         QMetaObject::invokeMethod(this, "addRegistryListener");
 #endif
     }
 };
 
 using AppMenu = QtWayland::org_kde_kwin_appmenu;
 using ServerSideDecorationPalette = QtWayland::org_kde_kwin_server_decoration_palette;
 
 Q_DECLARE_METATYPE(AppMenu *);
 Q_DECLARE_METATYPE(ServerSideDecorationPalette *);
 
 KWaylandIntegration::KWaylandIntegration(KdePlatformTheme *platformTheme)
     : QObject()
     , m_appMenuManager(new AppMenuManager)
     , m_paletteManager(new ServerSideDecorationPaletteManager)
     , m_platformTheme(platformTheme)
 {
     QCoreApplication::instance()->installEventFilter(this);
 }
 
 KWaylandIntegration::~KWaylandIntegration() = default;
 
 bool KWaylandIntegration::isRelevantTopLevel(QWindow *w)
 {
     if (!w || w->parent()) {
         return false;
     }
 
     // ignore  windows that map to XdgPopup
     if (w->type() == Qt::ToolTip || w->type() == Qt::Popup) {
         return false;
     }
     return true;
 }
 
 bool KWaylandIntegration::eventFilter(QObject *watched, QEvent *event)
 {
     if (event->type() == QEvent::Expose) {
         auto ee = static_cast<QExposeEvent *>(event);
         if (ee->region().isNull()) {
             return false;
         }
         QWindow *w = qobject_cast<QWindow *>(watched);
         if (!isRelevantTopLevel(w)) {
             return false;
         }
         if (!w->isVisible()) {
             return false;
         }
 
         if (w->property("org.kde.plasma.integration.shellSurfaceCreated").isNull()) {
             shellSurfaceCreated(w);
         }
     } else if (event->type() == QEvent::Hide) {
         QWindow *w = qobject_cast<QWindow *>(watched);
         if (!isRelevantTopLevel(w)) {
             return false;
         }
         shellSurfaceDestroyed(w);
     } else if (event->type() == QEvent::ApplicationPaletteChange) {
         if (watched != QGuiApplication::instance()) {
             return false;
         }
         const auto topLevelWindows = QGuiApplication::topLevelWindows();
         for (QWindow *w : topLevelWindows) {
             if (isRelevantTopLevel(w)) {
                 installColorScheme(w);
             }
         }
     } else if (event->type() == QEvent::PlatformSurface) {
         if (QWindow *w = qobject_cast<QWindow *>(watched)) {
             QPlatformSurfaceEvent *pe = static_cast<QPlatformSurfaceEvent *>(event);
             if (!w->flags().testFlag(Qt::ForeignWindow)) {
                 if (pe->surfaceEventType() == QPlatformSurfaceEvent::SurfaceCreated) {
                     m_platformTheme->windowCreated(w);
                 }
             }
         }
     }
 
     return false;
 }
 
 void KWaylandIntegration::shellSurfaceCreated(QWindow *w)
 {
     // set colorscheme hint
     if (qApp->property(s_schemePropertyName.constData()).isValid()) {
         installColorScheme(w);
     }
     const auto blurBehindProperty = w->property(s_blurBehindPropertyName.constData());
     if (blurBehindProperty.isValid()) {
         KWindowEffects::enableBlurBehind(w, blurBehindProperty.toBool());
     }
     // create deco
     wl_surface *s = surfaceFromWindow(w);
     if (!s) {
         return;
     }
 
     w->setProperty("org.kde.plasma.integration.shellSurfaceCreated", true);
 
 #ifndef KF6_TODO_DBUS_MENUBAR
     if (m_appMenuManager->isActive()) {
         auto menu = new AppMenu(m_appMenuManager->create(s));
         w->setProperty("org.kde.plasma.integration.appmenu", QVariant::fromValue(menu));
         auto menuBar = QDBusMenuBar::menuBarForWindow(w);
         if (!menuBar) {
             menuBar = QDBusMenuBar::globalMenuBar();
         }
         if (menuBar) {
             menu->set_address(QDBusConnection::sessionBus().baseService(), menuBar->objectPath());
         }
     }
 #endif
 }
 
 void KWaylandIntegration::shellSurfaceDestroyed(QWindow *w)
 {
     w->setProperty("org.kde.plasma.integration.shellSurfaceCreated", QVariant());
 
     auto appMenu = w->property("org.kde.plasma.integration.appmenu").value<AppMenu *>();
     if (appMenu) {
         appMenu->release();
         delete appMenu;
     }
     w->setProperty("org.kde.plasma.integration.appmenu", QVariant());
 
     auto decoPallete = w->property("org.kde.plasma.integration.palette").value<ServerSideDecorationPalette *>();
     if (decoPallete) {
         decoPallete->release();
         delete decoPallete;
     }
     w->setProperty("org.kde.plasma.integration.palette", QVariant());
 }
 
 void KWaylandIntegration::installColorScheme(QWindow *w)
 {
     if (!m_paletteManager->isActive()) {
         return;
     }
     auto palette = w->property("org.kde.plasma.integration.palette").value<ServerSideDecorationPalette *>();
     if (!palette) {
         auto s = surfaceFromWindow(w);
         if (!s) {
             return;
         }
         palette = new ServerSideDecorationPalette(m_paletteManager->create(s));
         w->setProperty("org.kde.plasma.integration.palette", QVariant::fromValue(palette));
     }
     if (palette) {
         palette->set_palette(qApp->property(s_schemePropertyName.constData()).toString());
     }
 }
 
 void KWaylandIntegration::setAppMenu(QWindow *window, const QString &serviceName, const QString &objectPath)
 {
     auto menu = window->property("org.kde.plasma.integration.appmenu").value<AppMenu *>();
     if (menu) {
         menu->set_address(serviceName, objectPath);
     }
 }
 
 wl_surface *KWaylandIntegration::surfaceFromWindow(QWindow *window)
 {
     QPlatformNativeInterface *nativeInterface = qGuiApp->platformNativeInterface();
     if (!nativeInterface) {
         return nullptr;
     }
     return static_cast<wl_surface *>(nativeInterface->nativeResourceForWindow("surface", window));
 }
 
 #include "kwaylandintegration.moc"