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