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# qsplitter.h

This is the verbatim text of the qsplitter.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/qsplitter.h   3.2.1   edited Jun 4 19:09 $
    **
    ** Definition of QSplitter class
    **
    **  Created : 980105
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the widgets module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
    ** licenses may use this file in accordance with the Qt Commercial License
    ** Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
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    **********************************************************************/

    #ifndef QSPLITTER_H
    #define QSPLITTER_H

    #ifndef QT_H
    #include "qframe.h"
    #include "qvaluelist.h"
    #endif // QT_H

    #ifndef QT_NO_SPLITTER

    class QSplitterHandle;
    class QSplitterPrivate;
    class QSplitterLayoutStruct;
    class QTextStream;

    class Q_EXPORT QSplitter : public QFrame
    {
        Q_OBJECT
        Q_PROPERTY( Orientation orientation READ orientation WRITE setOrientation )
        Q_PROPERTY( bool opaqueResize READ opaqueResize WRITE setOpaqueResize )
        Q_PROPERTY( int handleWidth READ handleWidth WRITE setHandleWidth )
        Q_PROPERTY( bool childrenCollapsible READ childrenCollapsible WRITE setChildrenCollapsible )

    public:
        // ### Qt 4.0: remove Auto from public API
        enum ResizeMode { Stretch, KeepSize, FollowSizeHint, Auto };

        QSplitter( QWidget* parent = 0, const char* name = 0 );
        QSplitter( Orientation, QWidget* parent = 0, const char* name = 0 );
        ~QSplitter();

        virtual void setOrientation( Orientation );
        Orientation orientation() const { return orient; }

        // ### Qt 4.0: make setChildrenCollapsible() and setCollapsible() virtual

        void setChildrenCollapsible( bool );
        bool childrenCollapsible() const;

        void setCollapsible( QWidget *w, bool );
        virtual void setResizeMode( QWidget *w, ResizeMode );
        virtual void setOpaqueResize( bool = TRUE );
        bool opaqueResize() const;

        void moveToFirst( QWidget * );
        void moveToLast( QWidget * );

        void refresh() { recalc( TRUE ); }
        QSize sizeHint() const;
        QSize minimumSizeHint() const;

        QValueList<int> sizes() const;
        void setSizes( QValueList<int> );

        int handleWidth() const;
        void setHandleWidth( int );

    protected:
        void childEvent( QChildEvent * );

        bool event( QEvent * );
        void resizeEvent( QResizeEvent * );

        int idAfter( QWidget* ) const;

        void moveSplitter( QCOORD pos, int id );
        virtual void drawSplitter( QPainter*, QCOORD x, QCOORD y,
    			       QCOORD w, QCOORD h );
        void styleChange( QStyle& );
        int adjustPos( int, int );
        virtual void setRubberband( int );
        void getRange( int id, int *, int * );

    private:
        enum { DefaultResizeMode = 3 };

        void init();
        void recalc( bool update = FALSE );
        void doResize();
        void storeSizes();
        void getRange( int id, int *, int *, int *, int * );
        void addContribution( int, int *, int *, bool );
        int adjustPos( int, int, int *, int *, int *, int * );
        bool collapsible( QSplitterLayoutStruct * );
        void processChildEvents();
        QSplitterLayoutStruct *findWidget( QWidget * );
        QSplitterLayoutStruct *addWidget( QWidget *, bool prepend = FALSE );
        void recalcId();
        void doMove( bool backwards, int pos, int id, int delta, bool upLeft,
    		 bool mayCollapse );
        void setGeo( QWidget *w, int pos, int size, bool splitterMoved );
        int findWidgetJustBeforeOrJustAfter( int id, int delta, int &collapsibleSize );
        void updateHandles();

        inline QCOORD pick( const QPoint &p ) const
        { return orient == Horizontal ? p.x() : p.y(); }
        inline QCOORD pick( const QSize &s ) const
        { return orient == Horizontal ? s.width() : s.height(); }

        inline QCOORD trans( const QPoint &p ) const
        { return orient == Vertical ? p.x() : p.y(); }
        inline QCOORD trans( const QSize &s ) const
        { return orient == Vertical ? s.width() : s.height(); }

        QSplitterPrivate *d;

        Orientation orient;
        friend class QSplitterHandle;

    #ifndef QT_NO_TEXTSTREAM
        friend Q_EXPORT QTextStream& operator<<( QTextStream&, const QSplitter& );
        friend Q_EXPORT QTextStream& operator>>( QTextStream&, QSplitter& );
    #endif

    private:
    #if defined(Q_DISABLE_COPY)
        QSplitter( const QSplitter & );
        QSplitter& operator=( const QSplitter & );
    #endif
    };

    #ifndef QT_NO_TEXTSTREAM
    Q_EXPORT QTextStream& operator<<( QTextStream&, const QSplitter& );
    Q_EXPORT QTextStream& operator>>( QTextStream&, QSplitter& );
    #endif

    #endif // QT_NO_SPLITTER

    #endif // QSPLITTER_H