/****************************************************************************
 **
 ** Copyright (C) 2004-2007 Trolltech ASA. All rights reserved.
 **
 ** This file is part of the example classes of the Qt Toolkit.
 **
 ** This file may be used under the terms of the GNU General Public
 ** License version 2.0 as published by the Free Software Foundation
 ** and appearing in the file LICENSE.GPL included in the packaging of
 ** this file.  Please review the following information to ensure GNU
 ** General Public Licensing requirements will be met:
 ** http://trolltech.com/products/qt/licenses/licensing/opensource/
 **
 ** If you are unsure which license is appropriate for your use, please
 ** review the following information:
 ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
 ** or contact the sales department at sales@trolltech.com.
 **
 ** In addition, as a special exception, Trolltech gives you certain
 ** additional rights. These rights are described in the Trolltech GPL
 ** Exception version 1.0, which can be found at
 ** http://www.trolltech.com/products/qt/gplexception/ and in the file
 ** GPL_EXCEPTION.txt in this package.
 **
 ** In addition, as a special exception, Trolltech, as the sole copyright
 ** holder for Qt Designer, grants users of the Qt/Eclipse Integration
 ** plug-in the right for the Qt/Eclipse Integration to link to
 ** functionality provided by Qt Designer and its related libraries.
 **
 ** Trolltech reserves all rights not expressly granted herein.
 **
 ** Trolltech ASA (c) 2007
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ****************************************************************************/
 
 #include <QtGui>
 
 #include "borderlayout.h"
 
 BorderLayout::BorderLayout(QWidget *parent, int margin, int spacing)
     : QLayout(parent)
 {
     setMargin(margin);
     setSpacing(spacing);
 }
 
 BorderLayout::BorderLayout(int spacing)
 {
     setSpacing(spacing);
 }
 
 BorderLayout::~BorderLayout()
 {
     QLayoutItem *l;
     while ((l = takeAt(0)))
         delete l;
 }
 
 void BorderLayout::addItem(QLayoutItem *item)
 {
     add(item, West);
 }
 
 void BorderLayout::addWidget(QWidget *widget, Position position)
 {
     add(new QWidgetItem(widget), position);
 }
 
 Qt::Orientations BorderLayout::expandingDirections() const
 {
     return Qt::Horizontal | Qt::Vertical;
 }
 
 bool BorderLayout::hasHeightForWidth() const
 {
     return false;
 }
 
 int BorderLayout::count() const
 {
     return list.size();
 }
 
 QLayoutItem *BorderLayout::itemAt(int index) const
 {
     ItemWrapper *wrapper = list.value(index);
     if (wrapper)
         return wrapper->item;
     else
         return 0;
 }
 
 QSize BorderLayout::minimumSize() const
 {
     return calculateSize(MinimumSize);
 }
 
 void BorderLayout::setGeometry(const QRect &amp;rect)
 {
     ItemWrapper *center = 0;
     int eastWidth = 0;
     int westWidth = 0;
     int northHeight = 0;
     int southHeight = 0;
     int centerHeight = 0;
     int i;
 
     QLayout::setGeometry(rect);
 
     for (i = 0; i < list.size(); ++i) {
         ItemWrapper *wrapper = list.at(i);
         QLayoutItem *item = wrapper->item;
         Position position = wrapper->position;
 
         if (position == North) {
             item->setGeometry(QRect(rect.x(), northHeight, rect.width(),
                                     item->sizeHint().height()));
 
             northHeight += item->geometry().height() + spacing();
         } else if (position == South) {
             item->setGeometry(QRect(item->geometry().x(),
                                     item->geometry().y(), rect.width(),
                                     item->sizeHint().height()));
 
             southHeight += item->geometry().height() + spacing();
 
             item->setGeometry(QRect(rect.x(),
                               rect.y() + rect.height() - southHeight + spacing(),
                               item->geometry().width(),
                               item->geometry().height()));
         } else if (position == Center) {
             center = wrapper;
         }
     }
 
     centerHeight = rect.height() - northHeight - southHeight;
 
     for (i = 0; i < list.size(); ++i) {
         ItemWrapper *wrapper = list.at(i);
         QLayoutItem *item = wrapper->item;
         Position position = wrapper->position;
 
         if (position == West) {
             item->setGeometry(QRect(rect.x() + westWidth, northHeight,
                                     item->sizeHint().width(), centerHeight));
 
             westWidth += item->geometry().width() + spacing();
         } else if (position == East) {
             item->setGeometry(QRect(item->geometry().x(), item->geometry().y(),
                                     item->sizeHint().width(), centerHeight));
 
             eastWidth += item->geometry().width() + spacing();
 
             item->setGeometry(QRect(
                               rect.x() + rect.width() - eastWidth + spacing(),
                               northHeight, item->geometry().width(),
                               item->geometry().height()));
         }
     }
 
     if (center)
         center->item->setGeometry(QRect(westWidth, northHeight,
                                         rect.width() - eastWidth - westWidth,
                                         centerHeight));
 }
 
 QSize BorderLayout::sizeHint() const
 {
     return calculateSize(SizeHint);
 }
 
 QLayoutItem *BorderLayout::takeAt(int index)
 {
     if (index >= 0 &amp;&amp; index < list.size()) {
         ItemWrapper *layoutStruct = list.takeAt(index);
         return layoutStruct->item;
     }
     return 0;
 }
 
 void BorderLayout::add(QLayoutItem *item, Position position)
 {
     list.append(new ItemWrapper(item, position));
 }
 
 QSize BorderLayout::calculateSize(SizeType sizeType) const
 {
     QSize totalSize;
 
     for (int i = 0; i < list.size(); ++i) {
         ItemWrapper *wrapper = list.at(i);
         Position position = wrapper->position;
         QSize itemSize;
 
         if (sizeType == MinimumSize)
             itemSize = wrapper->item->minimumSize();
         else // (sizeType == SizeHint)
             itemSize = wrapper->item->sizeHint();
 
         if (position == North || position == South || position == Center)
             totalSize.rheight() += itemSize.height();
 
         if (position == West || position == East || position == Center)
             totalSize.rwidth() += itemSize.width();
     }
     return totalSize;
 }