File indexing completed on 2024-05-19 09:25:45

 /*
     SPDX-FileCopyrightText: 2015 Martin Flöser <mgraesslin@kde.org>
     SPDX-FileCopyrightText: 2018 David Edmundson <davidedmundson@kde.org>
     SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "waylandwindow.h"
 #include "scene/windowitem.h"
 #include "wayland/clientconnection.h"
 #include "wayland/display.h"
 #include "wayland/surface.h"
 #include "wayland_server.h"
 #include "workspace.h"
 
 #include <QFileInfo>
 
 #include <csignal>
 
 #include <sys/types.h>
 #include <unistd.h>
 
 namespace KWin
 {
 
 enum WaylandGeometryType {
     WaylandGeometryClient = 0x1,
     WaylandGeometryFrame = 0x2,
     WaylandGeometryBuffer = 0x4,
 };
 Q_DECLARE_FLAGS(WaylandGeometryTypes, WaylandGeometryType)
 
 WaylandWindow::WaylandWindow(SurfaceInterface *surface)
     : m_isScreenLocker(surface->client() == waylandServer()->screenLockerClientConnection())
 {
     setSurface(surface);
 
     connect(surface, &SurfaceInterface::shadowChanged,
             this, &WaylandWindow::updateShadow);
     connect(this, &WaylandWindow::frameGeometryChanged,
             this, &WaylandWindow::updateClientOutputs);
     connect(this, &WaylandWindow::desktopFileNameChanged,
             this, &WaylandWindow::updateIcon);
     connect(workspace(), &Workspace::outputsChanged, this, &WaylandWindow::updateClientOutputs);
 
     updateResourceName();
     updateIcon();
 }
 
 std::unique_ptr<WindowItem> WaylandWindow::createItem(Scene *scene)
 {
     return std::make_unique<WindowItemWayland>(this, scene);
 }
 
 QString WaylandWindow::captionNormal() const
 {
     return m_captionNormal;
 }
 
 QString WaylandWindow::captionSuffix() const
 {
     return m_captionSuffix;
 }
 
 pid_t WaylandWindow::pid() const
 {
     return surface() ? surface()->client()->processId() : -1;
 }
 
 bool WaylandWindow::isClient() const
 {
     return true;
 }
 
 bool WaylandWindow::isLockScreen() const
 {
     return m_isScreenLocker;
 }
 
 bool WaylandWindow::isLocalhost() const
 {
     return true;
 }
 
 Window *WaylandWindow::findModal(bool allow_itself)
 {
     return nullptr;
 }
 
 QRectF WaylandWindow::resizeWithChecks(const QRectF &geometry, const QSizeF &size)
 {
     const QRectF area = workspace()->clientArea(WorkArea, this, geometry.center());
 
     qreal width = size.width();
     qreal height = size.height();
 
     // don't allow growing larger than workarea
     if (width > area.width()) {
         width = area.width();
     }
     if (height > area.height()) {
         height = area.height();
     }
     return QRectF(geometry.topLeft(), QSizeF(width, height));
 }
 
 void WaylandWindow::killWindow()
 {
     if (!surface()) {
         return;
     }
     auto c = surface()->client();
     if (c->processId() == getpid() || c->processId() == 0) {
         c->destroy();
         return;
     }
     ::kill(c->processId(), SIGTERM);
     // give it time to terminate and only if terminate fails, try destroy Wayland connection
     QTimer::singleShot(5000, c, &ClientConnection::destroy);
 }
 
 QString WaylandWindow::windowRole() const
 {
     return QString();
 }
 
 bool WaylandWindow::belongsToSameApplication(const Window *other, SameApplicationChecks checks) const
 {
     if (checks.testFlag(SameApplicationCheck::AllowCrossProcesses)) {
         if (other->desktopFileName() == desktopFileName()) {
             return true;
         }
     }
     if (auto s = other->surface()) {
         return s->client() == surface()->client();
     }
     return false;
 }
 
 bool WaylandWindow::belongsToDesktop() const
 {
     const auto clients = waylandServer()->windows();
 
     return std::any_of(clients.constBegin(), clients.constEnd(),
                        [this](const Window *client) {
                            if (belongsToSameApplication(client, SameApplicationChecks())) {
                                return client->isDesktop();
                            }
                            return false;
                        });
 }
 
 void WaylandWindow::updateClientOutputs()
 {
     if (isDeleted()) {
         return;
     }
     surface()->setOutputs(waylandServer()->display()->outputsIntersecting(frameGeometry().toAlignedRect()),
                           waylandServer()->display()->largestIntersectingOutput(frameGeometry().toAlignedRect()));
     if (output()) {
         surface()->setPreferredBufferScale(output()->scale());
         surface()->setPreferredBufferTransform(output()->transform());
         surface()->setPreferredColorDescription(output()->colorDescription());
     }
 }
 
 void WaylandWindow::updateIcon()
 {
     const QString waylandIconName = QStringLiteral("wayland");
     const QString dfIconName = iconFromDesktopFile();
     const QString iconName = dfIconName.isEmpty() ? waylandIconName : dfIconName;
     if (iconName == icon().name()) {
         return;
     }
     setIcon(QIcon::fromTheme(iconName));
 }
 
 void WaylandWindow::updateResourceName()
 {
     const QFileInfo fileInfo(surface()->client()->executablePath());
     if (fileInfo.exists()) {
         const QByteArray executableFileName = fileInfo.fileName().toUtf8();
         setResourceClass(executableFileName, executableFileName);
     }
 }
 
 void WaylandWindow::updateCaption()
 {
     const QString oldSuffix = m_captionSuffix;
     const auto shortcut = shortcutCaptionSuffix();
     m_captionSuffix = shortcut;
     if ((!isSpecialWindow() || isToolbar()) && findWindowWithSameCaption()) {
         int i = 2;
         do {
             m_captionSuffix = shortcut + QLatin1String(" <") + QString::number(i) + QLatin1Char('>');
             i++;
         } while (findWindowWithSameCaption());
     }
     if (m_captionSuffix != oldSuffix) {
         Q_EMIT captionChanged();
     }
 }
 
 void WaylandWindow::setCaption(const QString &caption)
 {
     const QString oldNormal = m_captionNormal;
     const QString oldSuffix = m_captionSuffix;
 
     m_captionNormal = caption.simplified();
     updateCaption();
 
     if (m_captionNormal != oldNormal) {
         Q_EMIT captionNormalChanged();
     }
     if (m_captionSuffix == oldSuffix) {
         // Don't emit caption change twice it already got emitted by the changing suffix.
         Q_EMIT captionChanged();
     }
 }
 
 void WaylandWindow::doSetActive()
 {
     if (isActive()) { // TODO: Xwayland clients must be unfocused somewhere else.
         StackingUpdatesBlocker blocker(workspace());
         workspace()->focusToNull();
     }
 }
 
 void WaylandWindow::cleanGrouping()
 {
     // We want to break parent-child relationships, but preserve stacking
     // order constraints at the same time for window closing animations.
 
     if (transientFor()) {
         transientFor()->removeTransientFromList(this);
         setTransientFor(nullptr);
     }
 
     const auto children = transients();
     for (Window *transient : children) {
         removeTransientFromList(transient);
         transient->setTransientFor(nullptr);
     }
 }
 
 QRectF WaylandWindow::frameRectToBufferRect(const QRectF &rect) const
 {
     return QRectF(rect.topLeft(), surface()->size());
 }
 
 void WaylandWindow::updateGeometry(const QRectF &rect)
 {
     const QRectF oldClientGeometry = m_clientGeometry;
     const QRectF oldFrameGeometry = m_frameGeometry;
     const QRectF oldBufferGeometry = m_bufferGeometry;
     const Output *oldOutput = m_output;
 
     m_clientGeometry = frameRectToClientRect(rect);
     m_frameGeometry = rect;
     m_bufferGeometry = frameRectToBufferRect(rect);
 
     WaylandGeometryTypes changedGeometries;
 
     if (m_clientGeometry != oldClientGeometry) {
         changedGeometries |= WaylandGeometryClient;
     }
     if (m_frameGeometry != oldFrameGeometry) {
         changedGeometries |= WaylandGeometryFrame;
     }
     if (m_bufferGeometry != oldBufferGeometry) {
         changedGeometries |= WaylandGeometryBuffer;
     }
 
     if (!changedGeometries) {
         return;
     }
 
     m_output = workspace()->outputAt(rect.center());
     updateWindowRules(Rules::Position | Rules::Size);
 
     if (changedGeometries & WaylandGeometryBuffer) {
         Q_EMIT bufferGeometryChanged(oldBufferGeometry);
     }
     if (changedGeometries & WaylandGeometryClient) {
         Q_EMIT clientGeometryChanged(oldClientGeometry);
     }
     if (changedGeometries & WaylandGeometryFrame) {
         Q_EMIT frameGeometryChanged(oldFrameGeometry);
     }
     if (oldOutput != m_output) {
         Q_EMIT outputChanged();
     }
 }
 
 void WaylandWindow::markAsMapped()
 {
     if (Q_UNLIKELY(!ready_for_painting)) {
         setupCompositing();
         updateCaption();
         setReadyForPainting();
     }
 }
 
 } // namespace KWin
 
 #include "moc_waylandwindow.cpp"