/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
**     the names of its contributors may be used to endorse or promote
**     products derived from this software without specific prior written
**     permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/

//! [0]
#ifndef CARD_H
#define CARD_H

#include <QtGui>
#include <QList>

class CardLayout : public QLayout
{
public:
    CardLayout(QWidget *parent, int dist): QLayout(parent, 0, dist) {}
    CardLayout(QLayout *parent, int dist): QLayout(parent, dist) {}
    CardLayout(int dist): QLayout(dist) {}
    ~CardLayout();

    void addItem(QLayoutItem *item);
    QSize sizeHint() const;
    QSize minimumSize() const;
	QLayoutItem *count() const;
    QLayoutItem *itemAt(int) const;
    QLayoutItem *takeAt(int);
    void setGeometry(const QRect &rect);

private:
    QList<QLayoutItem*> list;
};
#endif
//! [0]


//! [1]
//#include "card.h"
//! [1]

//! [2]
QLayoutItem *CardLayout::count() const
{
	// QList::size() returns the number of QLayoutItems in the list
    return list.size();
}
//! [2]

//! [3]
QLayoutItem *CardLayout::itemAt(int idx) const
{
    // QList::value() performs index checking, and returns 0 if we are
    // outside the valid range
    return list.value(idx);
}

QLayoutItem *CardLayout::takeAt(int idx)
{
    // QList::take does not do index checking
    return idx >= 0 && idx < list.size() ? list.takeAt(idx) : 0;
}
//! [3]


//! [4]
void CardLayout::addItem(QLayoutItem *item)
{
    list.append(item);
}
//! [4]


//! [5]
CardLayout::~CardLayout()
{
     QLayoutItem *item;
     while ((item = takeAt(0)))
         delete item;
}
//! [5]


//! [6]
void CardLayout::setGeometry(const QRect &r)
{
    QLayout::setGeometry(r);

    if (list.size() == 0)
        return;

    int w = r.width() - (list.count() - 1) * spacing();
    int h = r.height() - (list.count() - 1) * spacing();
    int i = 0;
    while (i < list.size()) {
        QLayoutItem *o = list.at(i);
        QRect geom(r.x() + i * spacing(), r.y() + i * spacing(), w, h);
        o->setGeometry(geom);
        ++i;
    }
}
//! [6]


//! [7]
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
    int i = 0;
    while (i < n) {
        QLayoutItem *o = list.at(i);
        s = s.expandedTo(o->sizeHint());
        ++i;
    }
    return s + n*QSize(spacing(), spacing());
}

QSize CardLayout::minimumSize() const
{
    QSize s(0,0);
    int n = list.count();
    int i = 0;
    while (i < n) {
        QLayoutItem *o = list.at(i);
        s = s.expandedTo(o->minimumSize());
        ++i;
    }
    return s + n*QSize(spacing(), spacing());
}
//! [7]