Long live Qt 4.5!

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diff --git a/src/gui/kernel/qsizepolicy.h b/src/gui/kernel/qsizepolicy.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 QSIZEPOLICY_H
+#define QSIZEPOLICY_H
+
+#include <QtCore/qobject.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QVariant;
+
+class Q_GUI_EXPORT QSizePolicy
+{
+    Q_GADGET
+    Q_ENUMS(Policy)
+
+private:
+    enum SizePolicyMasks {
+        HSize = 4,
+        HMask = 0x0f,
+        VMask = HMask << HSize,
+		CTShift = 9,
+		CTSize = 5,
+		CTMask = ((0x1 << CTSize) - 1) << CTShift,
+		UnusedShift = CTShift + CTSize,
+		UnusedSize = 2
+    };
+
+public:
+    enum PolicyFlag {
+        GrowFlag = 1,
+        ExpandFlag = 2,
+        ShrinkFlag = 4,
+        IgnoreFlag = 8
+    };
+
+    enum Policy {
+        Fixed = 0,
+        Minimum = GrowFlag,
+        Maximum = ShrinkFlag,
+        Preferred = GrowFlag | ShrinkFlag,
+        MinimumExpanding = GrowFlag | ExpandFlag,
+        Expanding = GrowFlag | ShrinkFlag | ExpandFlag,
+        Ignored = ShrinkFlag | GrowFlag | IgnoreFlag
+    };
+
+    enum ControlType {
+        DefaultType      = 0x00000001,
+        ButtonBox        = 0x00000002,
+        CheckBox         = 0x00000004,
+        ComboBox         = 0x00000008,
+        Frame            = 0x00000010,
+        GroupBox         = 0x00000020,
+        Label            = 0x00000040,
+        Line             = 0x00000080,
+        LineEdit         = 0x00000100,
+        PushButton       = 0x00000200,
+        RadioButton      = 0x00000400,
+        Slider           = 0x00000800,
+        SpinBox          = 0x00001000,
+        TabWidget        = 0x00002000,
+        ToolButton       = 0x00004000
+    };
+    Q_DECLARE_FLAGS(ControlTypes, ControlType)
+
+    QSizePolicy() : data(0) { }
+
+    // ### Qt 5: merge these two constructors (with type == DefaultType)
+    QSizePolicy(Policy horizontal, Policy vertical)
+        : data(horizontal | (vertical << HSize)) { }
+    QSizePolicy(Policy horizontal, Policy vertical, ControlType type)
+        : data(horizontal | (vertical << HSize)) { setControlType(type); }
+
+    Policy horizontalPolicy() const { return static_cast<Policy>(data & HMask); }
+    Policy verticalPolicy() const { return static_cast<Policy>((data & VMask) >> HSize); }
+    ControlType controlType() const;
+
+    void setHorizontalPolicy(Policy d) { data = (data & ~HMask) | d; }
+    void setVerticalPolicy(Policy d) { data = (data & ~(HMask << HSize)) | (d << HSize); }
+    void setControlType(ControlType type);
+
+    Qt::Orientations expandingDirections() const {
+        Qt::Orientations result;
+        if (verticalPolicy() & ExpandFlag)
+            result |= Qt::Vertical;
+        if (horizontalPolicy() & ExpandFlag)
+            result |= Qt::Horizontal;
+        return result;
+    }
+
+    void setHeightForWidth(bool b) { data = b ? (data | (1 << 2*HSize)) : (data & ~(1 << 2*HSize));  }
+    bool hasHeightForWidth() const { return data & (1 << 2*HSize); }
+
+    bool operator==(const QSizePolicy& s) const { return data == s.data; }
+    bool operator!=(const QSizePolicy& s) const { return data != s.data; }
+    operator QVariant() const; // implemented in qabstractlayout.cpp
+
+    int horizontalStretch() const { return data >> 24; }
+    int verticalStretch() const { return (data >> 16) & 0xff; }
+    void setHorizontalStretch(uchar stretchFactor) { data = (data&0x00ffffff) | (uint(stretchFactor)<<24); }
+    void setVerticalStretch(uchar stretchFactor) { data = (data&0xff00ffff) | (uint(stretchFactor)<<16); }
+
+    void transpose();
+
+#ifdef QT3_SUPPORT
+    typedef Policy SizeType;
+#ifndef qdoc
+    typedef Qt::Orientations ExpandData;
+    enum {
+        NoDirection = 0,
+        Horizontally = 1,
+        Vertically = 2,
+        BothDirections = Horizontally | Vertically
+    };
+#else
+    enum ExpandData {
+        NoDirection = 0x0,
+        Horizontally = 0x1,
+        Vertically = 0x2,
+        BothDirections = 0x3
+    };
+#endif // qdoc
+
+    inline QT3_SUPPORT bool mayShrinkHorizontally() const
+        { return horizontalPolicy() & ShrinkFlag; }
+    inline QT3_SUPPORT bool mayShrinkVertically() const { return verticalPolicy() & ShrinkFlag; }
+    inline QT3_SUPPORT bool mayGrowHorizontally() const { return horizontalPolicy() & GrowFlag; }
+    inline QT3_SUPPORT bool mayGrowVertically() const { return verticalPolicy() & GrowFlag; }
+    inline QT3_SUPPORT Qt::Orientations expanding() const { return expandingDirections(); }
+
+    QT3_SUPPORT_CONSTRUCTOR QSizePolicy(Policy hor, Policy ver, bool hfw)
+        : data(hor | (ver<<HSize) | (hfw ? (1U<<2*HSize) : 0)) { }
+
+    QT3_SUPPORT_CONSTRUCTOR QSizePolicy(Policy hor, Policy ver, uchar hors, uchar vers, bool hfw = false)
+        : data(hor | (ver<<HSize) | (hfw ? (1U<<2*HSize) : 0)) {
+        setHorizontalStretch(hors);
+        setVerticalStretch(vers);
+    }
+
+    inline QT3_SUPPORT Policy horData() const { return static_cast<Policy>(data & HMask); }
+    inline QT3_SUPPORT Policy verData() const { return static_cast<Policy>((data & VMask) >> HSize); }
+    inline QT3_SUPPORT void setHorData(Policy d) { setHorizontalPolicy(d); }
+    inline QT3_SUPPORT void setVerData(Policy d) { setVerticalPolicy(d); }
+
+    inline QT3_SUPPORT uint horStretch() const { return horizontalStretch(); }
+    inline QT3_SUPPORT uint verStretch() const { return verticalStretch(); }
+    inline QT3_SUPPORT void setHorStretch(uchar sf) { setHorizontalStretch(sf); }
+    inline QT3_SUPPORT void setVerStretch(uchar sf) { setVerticalStretch(sf); }
+#endif
+
+private:
+#ifndef QT_NO_DATASTREAM
+    friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QSizePolicy &);
+    friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QSizePolicy &);
+#endif
+    QSizePolicy(int i) : data(i) { }
+
+    quint32 data;
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QSizePolicy::ControlTypes)
+
+// implemented in qlayout.cpp
+Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QSizePolicy &);
+Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QSizePolicy &);
+
+inline void QSizePolicy::transpose() {
+    Policy hData = horizontalPolicy();
+    Policy vData = verticalPolicy();
+    uchar hStretch = horizontalStretch();
+    uchar vStretch = verticalStretch();
+    setHorizontalPolicy(vData);
+    setVerticalPolicy(hData);
+    setHorizontalStretch(vStretch);
+    setVerticalStretch(hStretch);
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QSIZEPOLICY_H