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/****************************************************************************
**
** Implementing your own layout: flow example
**
** Copyright (C) 1996-2008 Trolltech ASA. All rights reserved.
**
** This file is part of an example program for Qt. This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
#include "card.h"
class CardLayoutIterator :public QGLayoutIterator
{
public:
CardLayoutIterator( QPtrList<QLayoutItem> *l )
: idx( 0 ), list( l ) {}
QLayoutItem *current();
QLayoutItem *next();
QLayoutItem *takeCurrent();
private:
int idx;
QPtrList<QLayoutItem> *list;
};
QLayoutItem *CardLayoutIterator::current()
{
return idx < int( list->count() ) ? list->at( idx ) : 0;
}
QLayoutItem *CardLayoutIterator::next()
{
idx++; return current();
}
QLayoutItem *CardLayoutIterator::takeCurrent()
{
return idx < int( list->count() ) ?list->take( idx ) : 0;
}
QLayoutIterator CardLayout::iterator()
{
return QLayoutIterator( new CardLayoutIterator( &list ) );
}
CardLayout::~CardLayout()
{
deleteAllItems();
}
void CardLayout::addItem( QLayoutItem *item )
{
list.append( item );
}
void CardLayout::setGeometry( const QRect &rct )
{
QLayout::setGeometry( rct );
QPtrListIterator<QLayoutItem> it( list );
if ( it.count() == 0 )
return;
QLayoutItem *o;
int i = 0;
int w = rct.width() - ( list.count() - 1 ) * spacing();
int h = rct.height() - ( list.count() - 1 ) * spacing();
while ( ( o=it.current() ) != 0 ) {
++it;
QRect geom( rct.x() + i * spacing(), rct.y() + i * spacing(),
w, h );
o->setGeometry( geom );
++i;
}
}
QSize CardLayout::sizeHint() const
{
QSize s(0,0);
int n = list.count();
if ( n > 0 )
s = QSize(100,70); //start with a nice default size
QPtrListIterator<QLayoutItem> it(list);
QLayoutItem *o;
while ( (o=it.current()) != 0 ) {
++it;
s = s.expandedTo( o->minimumSize() );
}
return s + n*QSize(spacing(),spacing());
}
QSize CardLayout::minimumSize() const
{
QSize s(0,0);
int n = list.count();
QPtrListIterator<QLayoutItem> it(list);
QLayoutItem *o;
while ( (o=it.current()) != 0 ) {
++it;
s = s.expandedTo( o->minimumSize() );
}
return s + n*QSize(spacing(),spacing());
}
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