Advance Wayland and KDE package bring-up

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/recipes/kde/kwin/source/tests/shadowtest.cpp

@@ -0,0 +1,161 @@
+/*
+    SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+*/
+#include "KWayland/Client/shadow.h"
+#include "KWayland/Client/compositor.h"
+#include "KWayland/Client/connection_thread.h"
+#include "KWayland/Client/event_queue.h"
+#include "KWayland/Client/registry.h"
+#include "KWayland/Client/shell.h"
+#include "KWayland/Client/shm_pool.h"
+#include "KWayland/Client/surface.h"
+// Qt
+#include <QGuiApplication>
+#include <QImage>
+#include <QThread>
+
+using namespace KWayland::Client;
+
+class ShadowTest : public QObject
+{
+    Q_OBJECT
+public:
+    explicit ShadowTest(QObject *parent = nullptr);
+    virtual ~ShadowTest();
+
+    void init();
+
+private:
+    void setupRegistry(Registry *registry);
+    void setupShadow();
+    void render();
+    QThread *m_connectionThread;
+    ConnectionThread *m_connectionThreadObject;
+    EventQueue *m_eventQueue = nullptr;
+    Compositor *m_compositor = nullptr;
+    Shell *m_shell = nullptr;
+    ShellSurface *m_shellSurface = nullptr;
+    ShmPool *m_shm = nullptr;
+    Surface *m_surface = nullptr;
+    ShadowManager *m_shadowManager = nullptr;
+};
+
+ShadowTest::ShadowTest(QObject *parent)
+    : QObject(parent)
+    , m_connectionThread(new QThread(this))
+    , m_connectionThreadObject(new ConnectionThread())
+{
+}
+
+ShadowTest::~ShadowTest()
+{
+    m_connectionThread->quit();
+    m_connectionThread->wait();
+    m_connectionThreadObject->deleteLater();
+}
+
+void ShadowTest::init()
+{
+    connect(
+        m_connectionThreadObject,
+        &ConnectionThread::connected,
+        this,
+        [this] {
+            m_eventQueue = new EventQueue(this);
+            m_eventQueue->setup(m_connectionThreadObject);
+
+            Registry *registry = new Registry(this);
+            setupRegistry(registry);
+        },
+        Qt::QueuedConnection);
+    m_connectionThreadObject->moveToThread(m_connectionThread);
+    m_connectionThread->start();
+
+    m_connectionThreadObject->initConnection();
+}
+
+void ShadowTest::setupRegistry(Registry *registry)
+{
+    connect(registry, &Registry::compositorAnnounced, this, [this, registry](quint32 name, quint32 version) {
+        m_compositor = registry->createCompositor(name, version, this);
+    });
+    connect(registry, &Registry::shellAnnounced, this, [this, registry](quint32 name, quint32 version) {
+        m_shell = registry->createShell(name, version, this);
+    });
+    connect(registry, &Registry::shmAnnounced, this, [this, registry](quint32 name, quint32 version) {
+        m_shm = registry->createShmPool(name, version, this);
+    });
+    connect(registry, &Registry::shadowAnnounced, this, [this, registry](quint32 name, quint32 version) {
+        m_shadowManager = registry->createShadowManager(name, version, this);
+        m_shadowManager->setEventQueue(m_eventQueue);
+    });
+    connect(registry, &Registry::interfacesAnnounced, this, [this] {
+        Q_ASSERT(m_compositor);
+        Q_ASSERT(m_shell);
+        Q_ASSERT(m_shm);
+        m_surface = m_compositor->createSurface(this);
+        Q_ASSERT(m_surface);
+        setupShadow();
+        m_shellSurface = m_shell->createSurface(m_surface, this);
+        Q_ASSERT(m_shellSurface);
+        m_shellSurface->setToplevel();
+        connect(m_shellSurface, &ShellSurface::sizeChanged, this, &ShadowTest::render);
+        render();
+    });
+    registry->setEventQueue(m_eventQueue);
+    registry->create(m_connectionThreadObject);
+    registry->setup();
+}
+
+void ShadowTest::setupShadow()
+{
+    Q_ASSERT(m_shadowManager);
+    Shadow *shadow = m_shadowManager->createShadow(m_surface, this);
+    Q_ASSERT(shadow);
+
+    auto addElement = [this](const QColor color) {
+        const QSize size = QSize(10, 10);
+        auto buffer = m_shm->getBuffer(size, size.width() * 4).toStrongRef();
+        buffer->setUsed(true);
+        QImage image(buffer->address(), size.width(), size.height(), QImage::Format_ARGB32_Premultiplied);
+        image.fill(color);
+        return buffer;
+    };
+    shadow->attachTopLeft(addElement(Qt::red));
+    shadow->attachTop(addElement(Qt::darkRed));
+    shadow->attachTopRight(addElement(Qt::green));
+    shadow->attachRight(addElement(Qt::darkGreen));
+    shadow->attachBottomRight(addElement(Qt::darkBlue));
+    shadow->attachBottom(addElement(Qt::cyan));
+    shadow->attachBottomLeft(addElement(Qt::darkCyan));
+    shadow->attachLeft(addElement(Qt::magenta));
+    shadow->setOffsets(QMarginsF(5, 5, 5, 5));
+    shadow->commit();
+}
+
+void ShadowTest::render()
+{
+    const QSize &size = m_shellSurface->size().isValid() ? m_shellSurface->size() : QSize(300, 200);
+    auto buffer = m_shm->getBuffer(size, size.width() * 4).toStrongRef();
+    buffer->setUsed(true);
+    QImage image(buffer->address(), size.width(), size.height(), QImage::Format_ARGB32_Premultiplied);
+    image.fill(QColor(255, 255, 255, 128));
+
+    m_surface->attachBuffer(*buffer);
+    m_surface->damage(QRect(QPoint(0, 0), size));
+    m_surface->commit(Surface::CommitFlag::None);
+    buffer->setUsed(false);
+}
+
+int main(int argc, char **argv)
+{
+    QCoreApplication app(argc, argv);
+    ShadowTest client;
+    client.init();
+
+    return app.exec();
+}
+
+#include "shadowtest.moc"