/****************************************************************************
** $Id: qt/src/widgets/qhbox.cpp   2.2.0   edited 2000-08-25 $
**
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** This file is part of the widgets module of the Qt GUI Toolkit.
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** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
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** licenses may use this file in accordance with the Qt Commercial License
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**********************************************************************/

#include "qhbox.h"
#ifndef QT_NO_COMPLEXWIDGETS
#include "qlayout.h"
#include "qapplication.h"
#include "qobjectlist.h"

// NOT REVISED
/*!
  \class QHBox qhbox.h
  \brief The QHBox widget performs geometry management on its children

  \ingroup geomanagement

  All its children will be placed beside each other and sized
  according to their sizeHint()s.

  Use setMargin() to add space around the edge, and use setSpacing() to
  add space between the widgets.

  <img src=qhbox-m.png>

  \sa QVBox and QGrid
*/


/*!
  Constructs an hbox widget with parent \a parent and name \a name
 */
QHBox::QHBox( QWidget *parent, const char *name, WFlags f,  bool allowLines  )
    :QFrame( parent, name, f, allowLines )
{
    lay = new QHBoxLayout( this, frameWidth(), frameWidth(), name );
    lay->setAutoAdd( TRUE );
}


/*!
  Constructs a horizontal hbox if \a horizontal is TRUE, otherwise
  constructs a vertical hbox (also known as a vbox).

  This constructor is provided for the QVBox class. You should never need
  to use it directly.
*/

QHBox::QHBox( bool horizontal, QWidget *parent , const char *name, WFlags f, bool allowLines )
    :QFrame( parent, name, f, allowLines )
{
    lay = new QBoxLayout( this,
		       horizontal ? QBoxLayout::LeftToRight : QBoxLayout::Down,
			  frameWidth(), frameWidth(), name );
    lay->setAutoAdd( TRUE );
}

/*!\reimp
 */
void QHBox::frameChanged()
{
    if ( !layout() )
	return;
    layout()->setMargin( frameWidth() );
}


/*!
  Sets the spacing between children to \a space.
*/

void QHBox::setSpacing( int space )
{
    if ( layout() ) // ### why not use this->lay?
	layout()->setSpacing( space );
}


/*!
  \reimp
*/

QSize QHBox::sizeHint() const
{
    QWidget *mThis = (QWidget*)this;
    QApplication::sendPostedEvents( mThis, QEvent::ChildInserted );
    return QFrame::sizeHint();
}

/*!
  Sets the stretch factor of \a w to \a stretch.
  \sa QBoxLayout::setStretchFactor()
*/
bool QHBox::setStretchFactor( QWidget* w, int stretch )
{
    QWidget *mThis = (QWidget*)this;
    QApplication::sendPostedEvents( mThis, QEvent::ChildInserted );
    return lay->setStretchFactor( w, stretch );
}
#endif
