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#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,

                WFHShift = CTShift + CTSize,

		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;

/*  use bit flags instead, keep it here for improved readability for now

    quint32 horzPolicy : 4;

    quint32 vertPolicy : 4;

    quint32 hfw : 1;

    quint32 ctype : 5;

    quint32 wfh : 1;

    quint32 padding : 1;   // we cannot use the highest bit

    quint32 horStretch : 8;

    quint32 verStretch : 8;

*/

};

Q_DECLARE_OPERATORS_FOR_FLAGS(QSizePolicy::ControlTypes)

#ifndef QT_NO_DATASTREAM

// implemented in qlayout.cpp

Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QSizePolicy &);

Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QSizePolicy &);

#endif

inline void QSizePolicy::transpose() {

    Policy hData = horizontalPolicy();

    Policy vData = verticalPolicy();

    uchar hStretch = uchar(horizontalStretch());

    uchar vStretch = uchar(verticalStretch());

    setHorizontalPolicy(vData);

    setVerticalPolicy(hData);

    setHorizontalStretch(vStretch);

    setVerticalStretch(hStretch);

}

QT_END_NAMESPACE

QT_END_HEADER

#endif // QSIZEPOLICY_H