/data/gitorious.org/libyui/libyui-master/src/YLayoutBox.h

/**************************************************************************
Copyright (C) 2000 - 2010 Novell, Inc.
All Rights Reserved.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
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**************************************************************************/


/*---------------------------------------------------------------------\
|                                                                      |
|                      __   __    ____ _____ ____                      |
|                      \ \ / /_ _/ ___|_   _|___ \                     |
|                       \ V / _` \___ \ | |   __) |                    |
|                        | | (_| |___) || |  / __/                     |
|                        |_|\__,_|____/ |_| |_____|                    |
|                                                                      |
|                               core system                            |
|                                                        (C) SuSE GmbH |
\----------------------------------------------------------------------/

  File:         YLayoutBox.h

  Author:       Stefan Hundhammer <sh@suse.de>

/-*/

#ifndef YLayoutBox_h
#define YLayoutBox_h

#include <vector>
#include "YWidget.h"

using std::vector;

class YLayoutBoxPrivate;


class YLayoutBox : public YWidget
{
public:
    typedef vector<int> sizeVector;
    typedef vector<int> posVector;

protected:
    YLayoutBox( YWidget * parent, YUIDimension dim );

public:
    virtual ~YLayoutBox();

    virtual const char * widgetClass() const;

    YUIDimension primary() const;

    YUIDimension secondary() const;

    bool debugLayout() const;

    void setDebugLayout( bool deb = true );

    virtual int preferredSize( YUIDimension dim );

    virtual int preferredWidth();

    virtual int preferredHeight();

    virtual void setSize( int newWidth, int newHeight );

    virtual bool stretchable( YUIDimension dimension ) const;

    virtual void moveChild( YWidget * child, int newX, int newY ) = 0;

    static bool isLayoutStretch( YWidget * child, YUIDimension dimension );


protected:

    int childrenTotalWeight( YUIDimension dimension );

    int childrenMaxPreferredSize( YUIDimension dimension );

    int totalNonWeightedChildrenPreferredSize( YUIDimension dimension );

    int countNonWeightedChildren( YUIDimension dimension );

    int countStretchableChildren( YUIDimension dimension );

    int countLayoutStretchChildren( YUIDimension dimension );

    YWidget * findDominatingChild();

    void calcPrimaryGeometry    ( int           newSize,
                                  sizeVector &  childSize,
                                  posVector  &  childPos );

    void calcSecondaryGeometry  ( int           newSize,
                                  sizeVector &  childSize,
                                  posVector  &  childPos );

    void doResize( sizeVector & width,
                   sizeVector & height,
                   posVector  & x_pos,
                   posVector  & y_pos  );


private:

    ImplPtr<YLayoutBoxPrivate>  priv;
};


typedef YLayoutBox YVBox;
typedef YLayoutBox YHBox;


#endif // YLayoutBox_h