Adding a test application for copy

The test application copyClient creates a ShellSurface, maps it as
fullscreen, renders a green buffer and when it gets pointer focus it
sets "foo" in mimetype "text/plain" into the selection.

src/wayland/tests/CMakeLists.txt

@@ -14,3 +14,7 @@ if (Qt5Widgets_FOUND)
     target_link_libraries(testRenderingServer KF5::WaylandServer Qt5::Widgets)
     ecm_mark_as_test(testRenderingServer)
 endif()
+
+add_executable(copyClient copyclient.cpp)
+target_link_libraries(copyClient KF5::WaylandClient)
+ecm_mark_as_test(copyClient)

src/wayland/tests/copyclient.cpp

@@ -0,0 +1,199 @@
+/********************************************************************
+Copyright 2014  Martin Gräßlin <mgraesslin@kde.org>
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) version 3, or any
+later version accepted by the membership of KDE e.V. (or its
+successor approved by the membership of KDE e.V.), which shall
+act as a proxy defined in Section 6 of version 3 of the license.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+*********************************************************************/
+#include "../src/client/compositor.h"
+#include "../src/client/connection_thread.h"
+#include "../src/client/datadevice.h"
+#include "../src/client/datadevicemanager.h"
+#include "../src/client/datasource.h"
+#include "../src/client/event_queue.h"
+#include "../src/client/keyboard.h"
+#include "../src/client/pointer.h"
+#include "../src/client/registry.h"
+#include "../src/client/seat.h"
+#include "../src/client/shell.h"
+#include "../src/client/shm_pool.h"
+#include "../src/client/surface.h"
+// Qt
+#include <QCoreApplication>
+#include <QDebug>
+#include <QFile>
+#include <QImage>
+#include <QThread>
+
+using namespace KWayland::Client;
+
+class CopyClient : public QObject
+{
+    Q_OBJECT
+public:
+    explicit CopyClient(QObject *parent = nullptr);
+    virtual ~CopyClient();
+
+    void init();
+
+private:
+    void setupRegistry(Registry *registry);
+    void render();
+    void copy(const QString &mimeType, qint32 fd);
+    QThread *m_connectionThread;
+    ConnectionThread *m_connectionThreadObject;
+    EventQueue *m_eventQueue = nullptr;
+    Compositor *m_compositor = nullptr;
+    DataDeviceManager *m_dataDeviceManager = nullptr;
+    DataDevice *m_dataDevice = nullptr;
+    DataSource *m_copySource = nullptr;
+    Seat *m_seat = nullptr;
+    Shell *m_shell = nullptr;
+    ShellSurface *m_shellSurface = nullptr;
+    ShmPool *m_shm = nullptr;
+    Surface *m_surface = nullptr;
+};
+
+CopyClient::CopyClient(QObject *parent)
+    : QObject(parent)
+    , m_connectionThread(new QThread(this))
+    , m_connectionThreadObject(new ConnectionThread())
+{
+}
+
+CopyClient::~CopyClient()
+{
+    m_connectionThread->quit();
+    m_connectionThread->wait();
+    m_connectionThreadObject->deleteLater();
+}
+
+void CopyClient::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 CopyClient::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::seatAnnounced, this,
+        [this, registry](quint32 name, quint32 version) {
+            m_seat = registry->createSeat(name, version, this);
+            connect(m_seat, &Seat::hasPointerChanged, this,
+                [this] {
+                    auto p = m_seat->createPointer(this);
+                    connect(p, &Pointer::entered, this,
+                        [this] (quint32 serial) {
+                            if (m_copySource) {
+                                m_dataDevice->setSelection(serial, m_copySource);
+                            }
+                        }
+                    );
+                }
+            );
+        }
+    );
+    connect(registry, &Registry::dataDeviceManagerAnnounced, this,
+        [this, registry](quint32 name, quint32 version) {
+            m_dataDeviceManager = registry->createDataDeviceManager(name, version, this);
+        }
+    );
+    connect(registry, &Registry::interfacesAnnounced, this,
+        [this] {
+            Q_ASSERT(m_compositor);
+            Q_ASSERT(m_dataDeviceManager);
+            Q_ASSERT(m_seat);
+            Q_ASSERT(m_shell);
+            Q_ASSERT(m_shm);
+            m_surface = m_compositor->createSurface(this);
+            Q_ASSERT(m_surface);
+            m_shellSurface = m_shell->createSurface(m_surface, this);
+            Q_ASSERT(m_shellSurface);
+            m_shellSurface->setFullscreen();
+            connect(m_shellSurface, &ShellSurface::sizeChanged, this, &CopyClient::render);
+
+            m_dataDevice = m_dataDeviceManager->getDataDevice(m_seat, this);
+            m_copySource = m_dataDeviceManager->createDataSource(this);
+            m_copySource->offer(QStringLiteral("text/plain"));
+            connect(m_copySource, &DataSource::sendDataRequested, this, &CopyClient::copy);
+        }
+    );
+    registry->setEventQueue(m_eventQueue);
+    registry->create(m_connectionThreadObject);
+    registry->setup();
+}
+
+void CopyClient::render()
+{
+    const QSize &size = m_shellSurface->size();
+    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(Qt::green);
+
+    m_surface->attachBuffer(*buffer);
+    m_surface->damage(QRect(QPoint(0, 0), size));
+    m_surface->commit(Surface::CommitFlag::None);
+    buffer->setUsed(false);
+}
+
+void CopyClient::copy(const QString &mimeType, qint32 fd)
+{
+    qDebug() << "Requested to copy for mimeType" << mimeType;
+    QFile c;
+    if (c.open(fd, QFile::WriteOnly, QFile::AutoCloseHandle)) {
+        c.write(QByteArrayLiteral("foo"));
+        c.close();
+        qDebug() << "Copied foo";
+    }
+}
+
+int main(int argc, char **argv)
+{
+    QCoreApplication app(argc, argv);
+    CopyClient client;
+    client.init();
+
+    return app.exec();
+}
+
+#include "copyclient.moc"