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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples 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."
** $QT_END_LICENSE$
**
****************************************************************************/
#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 &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 && 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;
}
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