Long live Qt 4.5!

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diff --git a/src/gui/styles/qstyle_p.h b/src/gui/styles/qstyle_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 QSTYLE_P_H
+#define QSTYLE_P_H
+
+#include "private/qobject_p.h"
+
+QT_BEGIN_NAMESPACE
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp.  This header
+// file may change from version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+// Private class
+
+class QStylePrivate: public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QStyle)
+public:
+    inline QStylePrivate()
+        : layoutSpacingIndex(-1)
+    { }
+    mutable int layoutSpacingIndex;
+};
+
+
+#define BEGIN_STYLE_PIXMAPCACHE(a) \
+    QRect rect = option->rect; \
+    QPixmap internalPixmapCache; \
+    QImage imageCache; \
+    QPainter *p = painter; \
+    QString unique = uniqueName((a), option, option->rect.size()); \
+    int txType = painter->deviceTransform().type() | painter->worldTransform().type(); \
+    bool doPixmapCache = UsePixmapCache && txType <= QTransform::TxTranslate; \
+    if (doPixmapCache && QPixmapCache::find(unique, internalPixmapCache)) { \
+        painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \
+    } else { \
+        if (doPixmapCache) { \
+            rect.setRect(0, 0, option->rect.width(), option->rect.height()); \
+            imageCache = QImage(option->rect.size(), QImage::Format_ARGB32_Premultiplied); \
+            imageCache.fill(0); \
+            p = new QPainter(&imageCache); \
+        }
+
+
+#define END_STYLE_PIXMAPCACHE \
+        if (doPixmapCache) { \
+            p->end(); \
+            delete p; \
+            internalPixmapCache = QPixmap::fromImage(imageCache); \
+            painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \
+            QPixmapCache::insert(unique, internalPixmapCache); \
+        } \
+    }
+
+QT_END_NAMESPACE
+
+#endif //QSTYLE_P_H