File indexing completed on 2024-05-26 05:33:23

 /*
     KWin - the KDE window manager
     This file is part of the KDE project.
 
     SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
     SPDX-FileCopyrightText: 2019 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "integration.h"
 #include "backingstore.h"
 #include "eglplatformcontext.h"
 #include "logging.h"
 #include "offscreensurface.h"
 #include "screen.h"
 #include "window.h"
 
 #include "core/output.h"
 #include "core/outputbackend.h"
 #include "main.h"
 #include "workspace.h"
 
 #include <QCoreApplication>
 #include <QTimer>
 #include <QtConcurrentRun>
 
 #include <qpa/qplatformaccessibility.h>
 #include <qpa/qplatformnativeinterface.h>
 #include <qpa/qplatformwindow.h>
 #include <qpa/qwindowsysteminterface.h>
 
 #include <QtGui/private/qgenericunixeventdispatcher_p.h>
 #include <QtGui/private/qgenericunixfontdatabase_p.h>
 #include <QtGui/private/qgenericunixthemes_p.h>
 #include <QtGui/private/qspiaccessiblebridge_p.h>
 #include <QtGui/private/qunixeventdispatcher_qpa_p.h>
 
 namespace KWin
 {
 
 namespace QPA
 {
 
 Integration::Integration()
     : QObject()
     , QPlatformIntegration()
     , m_fontDb(new QGenericUnixFontDatabase())
     , m_nativeInterface(new QPlatformNativeInterface())
     , m_services(new QGenericUnixServices())
 {
 }
 
 Integration::~Integration()
 {
     for (QPlatformScreen *platformScreen : std::as_const(m_screens)) {
         QWindowSystemInterface::handleScreenRemoved(platformScreen);
     }
     if (m_dummyScreen) {
         QWindowSystemInterface::handleScreenRemoved(m_dummyScreen);
     }
 }
 
 QHash<Output *, Screen *> Integration::screens() const
 {
     return m_screens;
 }
 
 bool Integration::hasCapability(Capability cap) const
 {
     switch (cap) {
     case ThreadedPixmaps:
         return true;
     case OpenGL:
         return true;
     case ThreadedOpenGL:
         return false;
     case BufferQueueingOpenGL:
         return false;
     case MultipleWindows:
     case NonFullScreenWindows:
         return true;
     case RasterGLSurface:
         return false;
     default:
         return QPlatformIntegration::hasCapability(cap);
     }
 }
 
 void Integration::initialize()
 {
     // This method is called from QGuiApplication's constructor, before kwinApp is built
     QTimer::singleShot(0, this, [this] {
         // The QPA is initialized before the workspace is created.
         if (workspace()) {
             handleWorkspaceCreated();
         } else {
             connect(kwinApp(), &Application::workspaceCreated, this, &Integration::handleWorkspaceCreated);
         }
     });
 
     QPlatformIntegration::initialize();
 
     m_dummyScreen = new PlaceholderScreen();
     QWindowSystemInterface::handleScreenAdded(m_dummyScreen);
 }
 
 QAbstractEventDispatcher *Integration::createEventDispatcher() const
 {
     return new QUnixEventDispatcherQPA;
 }
 
 QPlatformBackingStore *Integration::createPlatformBackingStore(QWindow *window) const
 {
     return new BackingStore(window);
 }
 
 QPlatformWindow *Integration::createPlatformWindow(QWindow *window) const
 {
     return new Window(window);
 }
 
 QPlatformOffscreenSurface *Integration::createPlatformOffscreenSurface(QOffscreenSurface *surface) const
 {
     return new OffscreenSurface(surface);
 }
 
 QPlatformFontDatabase *Integration::fontDatabase() const
 {
     return m_fontDb.get();
 }
 
 QPlatformTheme *Integration::createPlatformTheme(const QString &name) const
 {
     return QGenericUnixTheme::createUnixTheme(name);
 }
 
 QStringList Integration::themeNames() const
 {
     if (qEnvironmentVariableIsSet("KDE_FULL_SESSION")) {
         return QStringList({QStringLiteral("kde")});
     }
     return QStringList({QLatin1String(QGenericUnixTheme::name)});
 }
 
 QPlatformOpenGLContext *Integration::createPlatformOpenGLContext(QOpenGLContext *context) const
 {
     if (kwinApp()->outputBackend()->sceneEglGlobalShareContext() == EGL_NO_CONTEXT) {
         qCWarning(KWIN_QPA) << "Attempting to create a QOpenGLContext before the scene is initialized";
         return nullptr;
     }
     EglDisplay *const eglDisplay = kwinApp()->outputBackend()->sceneEglDisplayObject();
     if (eglDisplay) {
         EGLPlatformContext *platformContext = new EGLPlatformContext(context, eglDisplay);
         return platformContext;
     }
     return nullptr;
 }
 
 QPlatformAccessibility *Integration::accessibility() const
 {
     if (!m_accessibility) {
         m_accessibility.reset(new QSpiAccessibleBridge());
     }
     return m_accessibility.get();
 }
 
 void Integration::handleWorkspaceCreated()
 {
     connect(workspace(), &Workspace::outputAdded,
             this, &Integration::handleOutputEnabled);
     connect(workspace(), &Workspace::outputRemoved,
             this, &Integration::handleOutputDisabled);
 
     const QList<Output *> outputs = workspace()->outputs();
     for (Output *output : outputs) {
         handleOutputEnabled(output);
     }
 }
 
 void Integration::handleOutputEnabled(Output *output)
 {
     Screen *platformScreen = new Screen(output, this);
     QWindowSystemInterface::handleScreenAdded(platformScreen);
     m_screens.insert(output, platformScreen);
 
     if (m_dummyScreen) {
         QWindowSystemInterface::handleScreenRemoved(m_dummyScreen);
         m_dummyScreen = nullptr;
     }
 }
 
 void Integration::handleOutputDisabled(Output *output)
 {
     Screen *platformScreen = m_screens.take(output);
     if (!platformScreen) {
         qCWarning(KWIN_QPA) << "Unknown output" << output;
         return;
     }
 
     if (m_screens.isEmpty()) {
         m_dummyScreen = new PlaceholderScreen();
         QWindowSystemInterface::handleScreenAdded(m_dummyScreen);
     }
 
     QWindowSystemInterface::handleScreenRemoved(platformScreen);
 }
 
 QPlatformNativeInterface *Integration::nativeInterface() const
 {
     return m_nativeInterface.get();
 }
 
 QPlatformServices *Integration::services() const
 {
     return m_services.get();
 }
 
 }
 }
 
 #include "moc_integration.cpp"