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#ifndef QSPLITTER_P_H

#define QSPLITTER_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 "private/qframe_p.h"

#include "qrubberband.h"

QT_BEGIN_NAMESPACE

static const uint Default = 2;

class QSplitterLayoutStruct

{

public:

    QRect rect;

    int sizer;

    uint collapsed : 1;

    uint collapsible : 2;

    QWidget *widget;

    QSplitterHandle *handle;

    QSplitterLayoutStruct() : sizer(-1), collapsed(false), collapsible(Default), widget(0), handle(0) {}

    ~QSplitterLayoutStruct() { delete handle; }

    int getWidgetSize(Qt::Orientation orient);

    int getHandleSize(Qt::Orientation orient);

    int pick(const QSize &size, Qt::Orientation orient)

    { return (orient == Qt::Horizontal) ? size.width() : size.height(); }

};

class QSplitterPrivate : public QFramePrivate

{

    Q_DECLARE_PUBLIC(QSplitter)

public:

    QSplitterPrivate() : rubberBand(0), opaque(true), firstShow(true),

                         childrenCollapsible(true), compatMode(false), handleWidth(0), blockChildAdd(false) {}

    QPointer<QRubberBand> rubberBand;

    mutable QList<QSplitterLayoutStruct *> list;

    Qt::Orientation orient;

    bool opaque : 8;

    bool firstShow : 8;

    bool childrenCollapsible : 8;

    bool compatMode : 8;

    int handleWidth;

    bool blockChildAdd;

    inline int pick(const QPoint &pos) const

    { return orient == Qt::Horizontal ? pos.x() : pos.y(); }

    inline int pick(const QSize &s) const

    { return orient == Qt::Horizontal ? s.width() : s.height(); }

    inline int trans(const QPoint &pos) const

    { return orient == Qt::Vertical ? pos.x() : pos.y(); }

    inline int trans(const QSize &s) const

    { return orient == Qt::Vertical ? s.width() : s.height(); }

    void init();

    void recalc(bool update = false);

    void doResize();

    void storeSizes();

    void getRange(int index, int *, int *, int *, int *) const;

    void addContribution(int, int *, int *, bool) const;

    int adjustPos(int, int, int *, int *, int *, int *) const;

    bool collapsible(QSplitterLayoutStruct *) const;

    bool collapsible(int index) const

    { return (index < 0 || index >= list.size()) ? true : collapsible(list.at(index)); }

    QSplitterLayoutStruct *findWidget(QWidget *) const;

    void insertWidget_helper(int index, QWidget *widget, bool show);

    QSplitterLayoutStruct *insertWidget(int index, QWidget *);

    void doMove(bool backwards, int pos, int index, int delta,

                bool mayCollapse, int *positions, int *widths);

    void setGeo(QSplitterLayoutStruct *s, int pos, int size, bool allowCollapse);

    int findWidgetJustBeforeOrJustAfter(int index, int delta, int &collapsibleSize) const;

    void updateHandles();

    void setSizes_helper(const QList<int> &sizes, bool clampNegativeSize = false);

};

class QSplitterHandlePrivate : public QWidgetPrivate

{

    Q_DECLARE_PUBLIC(QSplitterHandle)

public:

    QSplitterHandlePrivate() : s(0), orient(Qt::Horizontal), mouseOffset(0), opaq(false), hover(false), pressed(false) {}

    inline int pick(const QPoint &pos) const

    { return orient == Qt::Horizontal ? pos.x() : pos.y(); }

    QSplitter *s;

    Qt::Orientation orient;

    int mouseOffset;

    bool opaq    : 1;

    bool hover   : 1;

    bool pressed : 1;

};

QT_END_NAMESPACE

#endif