Long live Qt!

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diff --git a/src/gui/painting/qwindowsurface_qws_p.h b/src/gui/painting/qwindowsurface_qws_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWINDOWSURFACE_QWS_P_H
+#define QWINDOWSURFACE_QWS_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qwindowsurface_p.h"
+#include <qregion.h>
+#include <qimage.h>
+#include <qdirectpainter_qws.h>
+#include <qmutex.h>
+#include <private/qwssharedmemory_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScreen;
+class QWSWindowSurfacePrivate;
+
+class Q_GUI_EXPORT QWSWindowSurface : public QWindowSurface
+{
+public:
+    QWSWindowSurface();
+    QWSWindowSurface(QWidget *widget);
+    ~QWSWindowSurface();
+
+    virtual bool isValid() const = 0;
+
+    virtual void setGeometry(const QRect &rect);
+    virtual void setGeometry(const QRect &rect, const QRegion &mask);
+    virtual void flush(QWidget *widget, const QRegion &region,
+                       const QPoint &offset);
+
+    virtual bool move(const QPoint &offset);
+    virtual QRegion move(const QPoint &offset, const QRegion &newClip);
+
+    virtual QPoint painterOffset() const; // remove!!!
+
+    virtual void beginPaint(const QRegion &);
+    virtual void endPaint(const QRegion &);
+
+    virtual bool lock(int timeout = -1);
+    virtual void unlock();
+
+    virtual QString key() const = 0;
+
+    // XXX: not good enough
+    virtual QByteArray transientState() const;
+    virtual QByteArray permanentState() const;
+    virtual void setTransientState(const QByteArray &state);
+    virtual void setPermanentState(const QByteArray &state);
+
+    virtual QImage image() const = 0;
+    virtual QPaintDevice *paintDevice() = 0;
+
+    const QRegion clipRegion() const;
+    void setClipRegion(const QRegion &);
+
+#ifdef QT_QWS_CLIENTBLIT
+    virtual const QRegion directRegion() const;
+    virtual int directRegionId() const;
+    virtual void setDirectRegion(const QRegion &, int);
+#endif
+
+    enum SurfaceFlag {
+        RegionReserved = 0x1,
+        Buffered = 0x2,
+        Opaque = 0x4
+    };
+    Q_DECLARE_FLAGS(SurfaceFlags, SurfaceFlag)
+
+    SurfaceFlags surfaceFlags() const;
+
+    inline bool isRegionReserved() const {
+        return surfaceFlags() & RegionReserved;
+    }
+    inline bool isBuffered() const { return surfaceFlags() & Buffered; }
+    inline bool isOpaque() const { return surfaceFlags() & Opaque; }
+
+    int winId() const;
+    virtual void releaseSurface();
+
+protected:
+    void setSurfaceFlags(SurfaceFlags type);
+    void setWinId(int id);
+
+private:
+    friend class QWidgetPrivate;
+
+    void invalidateBuffer();
+
+    QWSWindowSurfacePrivate *d_ptr;
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QWSWindowSurface::SurfaceFlags)
+
+class QWSWindowSurfacePrivate
+{
+public:
+    QWSWindowSurfacePrivate();
+
+    void setWinId(int id);
+
+    QWSWindowSurface::SurfaceFlags flags;
+    QRegion clip;
+#ifdef QT_QWS_CLIENTBLIT
+    QRegion direct;
+    int directId;
+#endif
+
+    int winId;
+};
+
+class QWSLock;
+
+class Q_GUI_EXPORT QWSMemorySurface : public QWSWindowSurface
+{
+public:
+    QWSMemorySurface();
+    QWSMemorySurface(QWidget *widget);
+    ~QWSMemorySurface();
+
+    bool isValid() const;
+
+    QPaintDevice *paintDevice() { return &img; }
+    bool scroll(const QRegion &area, int dx, int dy);
+
+    QImage image() const { return img; };
+    QPoint painterOffset() const;
+
+    bool lock(int timeout = -1);
+    void unlock();
+
+protected:
+    QImage::Format preferredImageFormat(const QWidget *widget) const;
+
+#ifndef QT_NO_QWS_MULTIPROCESS
+    void setLock(int lockId);
+    QWSLock *memlock;
+#endif
+#ifndef QT_NO_THREAD
+    QMutex threadLock;
+#endif
+
+    QImage img;
+};
+
+class Q_GUI_EXPORT QWSLocalMemSurface : public QWSMemorySurface
+{
+public:
+    QWSLocalMemSurface();
+    QWSLocalMemSurface(QWidget *widget);
+    ~QWSLocalMemSurface();
+
+    void setGeometry(const QRect &rect);
+
+    QString key() const { return QLatin1String("mem"); }
+    QByteArray permanentState() const;
+
+    void setPermanentState(const QByteArray &data);
+    virtual void releaseSurface();
+protected:
+    uchar *mem;
+    int memsize;
+};
+
+#ifndef QT_NO_QWS_MULTIPROCESS
+class Q_GUI_EXPORT QWSSharedMemSurface : public QWSMemorySurface
+{
+public:
+    QWSSharedMemSurface();
+    QWSSharedMemSurface(QWidget *widget);
+    ~QWSSharedMemSurface();
+
+    void setGeometry(const QRect &rect);
+
+    QString key() const { return QLatin1String("shm"); }
+    QByteArray permanentState() const;
+
+    void setPermanentState(const QByteArray &data);
+
+#ifdef QT_QWS_CLIENTBLIT
+    virtual void setDirectRegion(const QRegion &, int);
+    virtual const QRegion directRegion() const;
+#endif
+    virtual void releaseSurface();
+
+private:
+    bool setMemory(int memId);
+
+    QWSSharedMemory mem;
+};
+#endif // QT_NO_QWS_MULTIPROCESS
+
+#ifndef QT_NO_PAINTONSCREEN
+class Q_GUI_EXPORT QWSOnScreenSurface : public QWSMemorySurface
+{
+public:
+    QWSOnScreenSurface();
+    QWSOnScreenSurface(QWidget *widget);
+    ~QWSOnScreenSurface();
+
+    bool isValid() const;
+    QPoint painterOffset() const;
+
+    QString key() const { return QLatin1String("OnScreen"); }
+    QByteArray permanentState() const;
+
+    void setPermanentState(const QByteArray &data);
+
+private:
+    void attachToScreen(const QScreen *screen);
+
+    const QScreen *screen;
+};
+#endif // QT_NO_PAINTONSCREEN
+
+#ifndef QT_NO_PAINT_DEBUG
+class Q_GUI_EXPORT QWSYellowSurface : public QWSWindowSurface
+{
+public:
+    QWSYellowSurface(bool isClient = false);
+    ~QWSYellowSurface();
+
+    void setDelay(int msec) { delay = msec; }
+
+    bool isValid() const { return true; }
+
+    void flush(QWidget *widget, const QRegion &region, const QPoint &offset);
+
+    QString key() const { return QLatin1String("Yellow"); }
+    QByteArray permanentState() const;
+
+    void setPermanentState(const QByteArray &data);
+
+    QPaintDevice *paintDevice() { return &img; }
+    QImage image() const { return img; }
+
+private:
+    int delay;
+    QSize surfaceSize; // client side
+    QImage img; // server side
+};
+#endif // QT_NO_PAINT_DEBUG
+
+#ifndef QT_NO_DIRECTPAINTER
+
+class QScreen;
+
+class Q_GUI_EXPORT QWSDirectPainterSurface : public QWSWindowSurface
+{
+public:
+    QWSDirectPainterSurface(bool isClient = false,
+                            QDirectPainter::SurfaceFlag flags = QDirectPainter::NonReserved);
+    ~QWSDirectPainterSurface();
+
+    void setReserved() { setSurfaceFlags(RegionReserved); }
+
+    void setGeometry(const QRect &rect) { setRegion(rect); }
+
+    void setRegion(const QRegion &region);
+    QRegion region() const { return clipRegion(); }
+
+    void flush(QWidget*, const QRegion &, const QPoint &);
+
+    bool isValid() const { return false; }
+
+    QString key() const { return QLatin1String("DirectPainter"); }
+    QByteArray permanentState() const;
+
+    void setPermanentState(const QByteArray &);
+
+    QImage image() const { return QImage(); }
+    QPaintDevice *paintDevice() { return 0; }
+
+    // hw: get rid of this
+    WId windowId() const { return static_cast<WId>(winId()); }
+
+    QScreen *screen() const { return _screen; }
+
+    void beginPaint(const QRegion &);
+    bool lock(int timeout = -1);
+    void unlock();
+
+    void setLocking(bool b) { doLocking = b; }
+
+    bool hasPendingRegionEvents() const;
+
+private:
+    QScreen *_screen;
+#ifndef QT_NO_THREAD
+    QMutex threadLock;
+#endif
+
+    friend void qt_directpainter_region(QDirectPainter*, const QRegion&, int);
+    bool flushingRegionEvents;
+    bool synchronous;
+    bool doLocking;
+};
+
+#endif // QT_NO_DIRECTPAINTER
+
+QT_END_NAMESPACE
+
+#endif // QWINDOWSURFACE_QWS_P_H