Initial commit of the Qt Developer Days Window System client implementation.

4 files changed, 475 insertions, 0 deletions

diff --git a/devdays.pro b/devdays.pro
new file mode 100644
index 0000000..6837a1b
--- /dev/null
+++ b/devdays.pro
@@ -0,0 +1,10 @@
+TARGET = qdevdaysgraphicssystem
+include(../../qpluginbase.pri)
+
+QTDIR_build:DESTDIR = $$QT_BUILD_TREE/plugins/graphicssystems
+
+SOURCES = main.cpp qgraphicssystem_dd.cpp
+HEADERS = qgraphicssystem_dd.h
+
+target.path += $$[QT_INSTALL_PLUGINS]/graphicssystems
+INSTALLS += target
diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..72e9a88
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <private/qgraphicssystemplugin_p.h>
+#include "qgraphicssystem_dd.h"
+
+QT_BEGIN_NAMESPACE
+
+class QDevDaysGraphicsSystemPlugin : public QGraphicsSystemPlugin
+{
+public:
+    QStringList keys() const;
+    QGraphicsSystem *create(const QString &system);
+};
+
+QStringList QDevDaysGraphicsSystemPlugin::keys() const
+{
+    QStringList list;
+    list << "DevDays";
+    return list;
+}
+
+QGraphicsSystem* QDevDaysGraphicsSystemPlugin::create(const QString &system)
+{
+    if (system.toLower() == "devdays")
+        return new QDevDaysGraphicsSystem;
+    return 0;
+}
+
+Q_EXPORT_PLUGIN2(devdays, QDevDaysGraphicsSystemPlugin)
+
+QT_END_NAMESPACE
diff --git a/qgraphicssystem_dd.cpp b/qgraphicssystem_dd.cpp
new file mode 100644
index 0000000..d175a45
--- /dev/null
+++ b/qgraphicssystem_dd.cpp
@@ -0,0 +1,268 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights.  These rights are described in the Nokia Qt LGPL
+** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgraphicssystem_dd.h"
+
+#include <QtGui/private/qapplication_p.h>
+#include <QtGui/private/qpixmap_raster_p.h>
+
+#include <QtGui/qapplication.h>
+#include <QtGui/qevent.h>
+
+#include <QtNetwork/qhostaddress.h>
+
+#include <QtCore/qbytearray.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+//
+// window surface
+//
+
+QDevDaysWindowSurface::QDevDaysWindowSurface(QWidget *window, QDevDaysGraphicsSystem *system)
+    : QWindowSurface(window), m_system(system)
+{
+    quint32 parentId = system->m_ids.value(window->parentWidget(), 0);
+
+    Request request(Request::CreateRequest, parentId);
+    system->sendRequest(request);
+
+    Response response;
+    system->waitForResponse(response);
+    m_id = response.id;
+
+    m_system->m_surfaces.insert(m_id, this);
+    m_system->m_ids.insert(window, m_id);
+}
+
+QDevDaysWindowSurface::~QDevDaysWindowSurface()
+{
+    Request request(Request::DestroyRequest, m_id);
+    m_system->sendRequest(request);
+    m_system->m_surfaces.remove(m_id);
+    m_system->m_ids.remove(window());
+}
+
+QPaintDevice *QDevDaysWindowSurface::paintDevice()
+{
+    qDebug() << "WINDOW: paint device" << m_image.size();
+    return &m_image;
+}
+
+void QDevDaysWindowSurface::flush(QWidget *widget, const QRegion &region, const QPoint &offset)
+{
+    Q_UNUSED(widget);
+    Q_UNUSED(region);
+    Q_UNUSED(offset);
+    qDebug() << "WINDOW: flush";
+    // send an update request to the server
+    Request request(Request::UpdateRequest, m_id); // ### rect
+    m_system->sendRequest(request);
+    // we don't expect any response
+}
+
+void QDevDaysWindowSurface::setGeometry(const QRect &rect)
+{
+    qDebug() << "WINDOW: setGeometry";
+    QWindowSurface::setGeometry(rect);
+
+    // create or resize the shared memory
+    qint32 byteCount = rect.width() * rect.height() * sizeof(quint32); // ### server should hold the pixel format
+    qDebug() << "WINDOW: byte count" << byteCount;
+    if (byteCount > m_shared.size()) {
+        if (m_shared.key().isEmpty())
+            m_shared.setKey(QString::number(m_id));
+        else
+            m_shared.detach();
+        if (!m_shared.create(byteCount) && !m_shared.attach())
+            qWarning() << m_shared.errorString() << m_shared.key();
+        qDebug() << "WINDOW: data" << m_shared.data() << "key" << m_shared.key();
+    }
+
+    Request request(Request::SetGeometryRequest, m_id, rect);
+    m_system->sendRequest(request);
+}
+
+bool QDevDaysWindowSurface::scroll(const QRegion &area, int dx, int dy)
+{
+    // the server doesn't have scroll
+    return QWindowSurface::scroll(area, dx, dy);
+}
+
+void QDevDaysWindowSurface::beginPaint(const QRegion &region)
+{
+    Q_UNUSED(region);
+    qDebug() << "WINDOW: begin paint" << m_id << geometry();
+    // lock the surface shared memory before painting
+    if (m_shared.lock() && m_shared.data())
+        m_image = QImage((uchar*)m_shared.data(), geometry().width(), geometry().height(), m_system->screens().first()->format());
+    else
+        qDebug() << m_shared.errorString();
+    qDebug() << "WINDOW: image" << m_image.size() << "geometry" << geometry() << "data" << m_shared.data() << "key" << m_shared.key();
+}
+
+void QDevDaysWindowSurface::endPaint(const QRegion &region)
+{
+    Q_UNUSED(region);
+    qDebug() << "WINDOW: end paint";
+    // unlock the surface shared memory after painting
+    // also make sure that the paint device is invalid
+    if (m_shared.unlock())
+        m_image = QImage();
+    else
+        qDebug() << "WINDOW: failed to unlock shared memory";
+}
+
+void QDevDaysWindowSurface::handleMouseEvent(const Event &event)
+{
+    QEvent::Type type = QEvent::None;
+    QPoint position = event.rect.topLeft().toPoint();
+    switch (event.type) {
+    case Event::MousePressEvent:
+        type = QEvent::MouseButtonPress;
+        break;
+    case Event::MouseReleaseEvent:
+        type = QEvent::MouseButtonPress;
+        break;
+    default:
+        break;
+    }
+    QMouseEvent mouseEvent(type, position, Qt::LeftButton, Qt::NoButton, Qt::NoModifier);
+    QApplicationPrivate::handleMouseEvent(window(), mouseEvent);
+}
+
+void QDevDaysWindowSurface::handleGeometryChanged(const Event &event)
+{
+    QApplicationPrivate::handleGeometryChange(window(), event.rect.toRect());
+}
+
+//
+// graphics system
+//
+
+QDevDaysGraphicsSystem::QDevDaysGraphicsSystem()
+    : QObject(0)
+{
+    qDebug() << "SYSTEM: constructor";
+    connectToServer();
+}
+
+QPixmapData *QDevDaysGraphicsSystem::createPixmapData(QPixmapData::PixelType type) const
+{
+    qDebug() << "SYSTEM: create pixmap data";
+    // the window system has no server-side pixmap type
+    return new QRasterPixmapData(type);
+}
+
+QWindowSurface *QDevDaysGraphicsSystem::createWindowSurface(QWidget *widget) const
+{
+    qDebug() << "SYSTEM: create window surface";
+    // send create request to the server
+    Q_ASSERT(widget);
+    if (widget->windowType() == Qt::Desktop)
+        return 0;
+    return new QDevDaysWindowSurface(widget, const_cast<QDevDaysGraphicsSystem*>(this));
+}
+
+QList<QGraphicsSystemScreen*> QDevDaysGraphicsSystem::screens() const
+{
+    qDebug() << "SYSTEM: screens";
+    return QList<QGraphicsSystemScreen*>() << &m_screen;
+}
+
+bool QDevDaysGraphicsSystem::connectToServer()
+{
+    qDebug() << "SYSTEM: connect to server";
+    m_connection.connectToHost(QHostAddress::LocalHost, 2048);
+    if (m_connection.waitForConnected()) {
+        QObject::connect(&m_connection, SIGNAL(readyRead()), this, SLOT(eventDispatcher()));
+        QObject::connect(&m_connection, SIGNAL(disconnected()), QApplication::instance(), SLOT(quit()));
+        qDebug() << "SYSTEM: connected to server";
+        return true;
+    }
+    qDebug() << "SYSTEM: unable to connect to server";
+    return false;
+}
+
+bool QDevDaysGraphicsSystem::sendRequest(const Request &request)
+{
+    qDebug() << "SYSTEM: sending request";
+    QDataStream stream(&m_connection);
+    stream << (*static_cast<const Message*>(&request));
+    return m_connection.isValid();
+}
+
+bool QDevDaysGraphicsSystem::waitForResponse(Response &response)
+{
+    qDebug() << "SYSTEM: waiting for response";
+    if (m_connection.waitForReadyRead(-1)) {
+        if (m_message.message == Message::ResponseMessage) {
+            qDebug() << "SYSTEM: received response";
+            response.type = m_message.type;
+            response.id = m_message.id;
+            response.rect = m_message.rect;
+            // clear internal message
+            m_message.message = Message::InvalidMessage;
+            return true;
+        }
+    }
+    //handleConnectionError();
+    return false;
+}
+
+void QDevDaysGraphicsSystem::eventDispatcher()
+{
+    qDebug() << "SYSTEM: event dispatcher";
+    while (m_connection.bytesAvailable()) {
+        QDataStream in(&m_connection);
+        in >> m_message;
+        if (m_message.message == Event::EventMessage) {
+            qDebug() << "SYSTEM: received event" << m_message.type;
+        } else if (m_message.message == Response::ResponseMessage) {
+            qDebug() << "SYSTEM: received response" << m_message.type << m_message.id;
+        }
+        //if (!m_connection.isValid())
+        //    handleConnectionError();
+    }
+}
+
+QT_END_NAMESPACE
diff --git a/qgraphicssystem_dd.h b/qgraphicssystem_dd.h
new file mode 100644
index 0000000..6021d47
--- /dev/null
+++ b/qgraphicssystem_dd.h
@@ -0,0 +1,127 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights.  These rights are described in the Nokia Qt LGPL
+** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGRAPHICSSYSTEM_DD_H
+#define QGRAPHICSSYSTEM_DD_H
+
+#include <QtCore/qhash.h>
+#include <QtCore/qsharedmemory.h>
+#include <QtNetwork/qtcpsocket.h>
+
+#include <QtGui/private/qgraphicssystem_p.h>
+#include "/Users/mmonsen/Development/depots/display-server-client/protocol.h"
+
+QT_BEGIN_NAMESPACE
+
+class QDevDaysGraphicsSystem;
+class QDevDaysGraphicsSystemScreen;
+
+class QDevDaysWindowSurface : public QWindowSurface
+{
+public:
+    QDevDaysWindowSurface(QWidget *window, QDevDaysGraphicsSystem *system);
+    ~QDevDaysWindowSurface();
+
+    QPaintDevice *paintDevice();
+    void flush(QWidget *widget, const QRegion &region, const QPoint &offset);
+    void setGeometry(const QRect &rect);
+    bool scroll(const QRegion &area, int dx, int dy);
+
+    void beginPaint(const QRegion &region);
+    void endPaint(const QRegion &region);
+
+    // event handlers
+    void handleMouseEvent(const Event &event);
+    void handleGeometryChanged(const Event &event);
+
+private:
+    QDevDaysGraphicsSystem *m_system;
+    quint32 m_id;
+    QSharedMemory m_shared;
+    QImage m_image;
+};
+
+class QDevDaysGraphicsSystemScreen : public QGraphicsSystemScreen
+{
+public:
+    QDevDaysGraphicsSystemScreen() {}
+    ~QDevDaysGraphicsSystemScreen() {}
+
+    QRect geometry() const { return QRect(0, 0, 640, 480); } // size in pixels
+    int depth() const { return 32; }
+    QImage::Format format() const { return QImage::Format_ARGB32; }
+    QSize physicalSize() const { return QSize(80, 108); } // size in milimeters
+};
+
+class QDevDaysGraphicsSystem : public QObject, public QGraphicsSystem
+{
+    Q_OBJECT
+public:
+    QDevDaysGraphicsSystem();
+
+    // QGraphicsSystem interface
+    QPixmapData *createPixmapData(QPixmapData::PixelType type) const;
+    QWindowSurface *createWindowSurface(QWidget *widget) const;
+    QList<QGraphicsSystemScreen*> screens() const;
+
+    // client interface
+    bool connectToServer();
+    bool sendRequest(const Request &request);
+    bool waitForResponse(Response &response);
+
+public slots:
+    void eventDispatcher();
+
+private:
+    QTcpSocket m_connection;
+    Message m_message;
+
+public:
+    mutable QHash<quint32, QDevDaysWindowSurface*> m_surfaces;
+    mutable QHash<QWidget*, quint32> m_ids;
+    mutable QDevDaysGraphicsSystemScreen m_screen;
+    //mutable Client m_client;
+};
+
+
+QT_END_NAMESPACE
+
+#endif