File indexing completed on 2024-04-28 16:49:18

 /*
     KWin - the KDE window manager
     This file is part of the KDE project.
 
     SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "xwaylandwindow.h"
 #include "wayland/surface_interface.h"
 
 using namespace KWaylandServer;
 
 namespace KWin
 {
 
 XwaylandWindow::XwaylandWindow()
 {
     // The wayland surface is associated with the Xwayland window asynchronously.
     connect(this, &Window::surfaceChanged, this, &XwaylandWindow::associate);
 }
 
 void XwaylandWindow::associate()
 {
     if (surface()->isMapped()) {
         initialize();
     } else {
         // Queued connection because we want to mark the window ready for painting after
         // the associated surface item has processed the new surface state.
         connect(surface(), &SurfaceInterface::mapped, this, &XwaylandWindow::initialize, Qt::QueuedConnection);
     }
 }
 
 void XwaylandWindow::initialize()
 {
     if (!readyForPainting()) { // avoid "setReadyForPainting()" function calling overhead
         if (syncRequest().counter == XCB_NONE) { // cannot detect complete redraw, consider done now
             setReadyForPainting();
         }
     }
 }
 
 bool XwaylandWindow::wantsSyncCounter() const
 {
     // When the frame window is resized, the attached buffer will be destroyed by
     // Xwayland, causing unexpected invalid previous and current window pixmaps.
     // With the addition of multiple window buffers in Xwayland 1.21, X11 clients
     // are no longer able to destroy the buffer after it's been committed and not
     // released by the compositor yet.
     static const quint32 xwaylandVersion = xcb_get_setup(kwinApp()->x11Connection())->release_number;
     return xwaylandVersion >= 12100000;
 }
 
 } // namespace KWin