<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Qt 4.2: borderlayout.cpp Example File (layouts/borderlayout/borderlayout.cpp)</title> <link href="classic.css" rel="stylesheet" type="text/css" /> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td align="left" valign="top" width="32"><a href="http://www.trolltech.com/products/qt"><img src="images/qt-logo.png" align="left" width="32" height="32" border="0" /></a></td> <td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> · <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> · <a href="modules.html"><font color="#004faf">Modules</font></a> · <a href="functions.html"><font color="#004faf">Functions</font></a></td> <td align="right" valign="top" width="230"><a href="http://www.trolltech.com"><img src="images/trolltech-logo.png" align="right" width="203" height="32" border="0" /></a></td></tr></table><h1 align="center">borderlayout.cpp Example File<br /><sup><sup>layouts/borderlayout/borderlayout.cpp</sup></sup></h1> <pre> /**************************************************************************** ** ** Copyright (C) 2004-2006 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:<span class="comment">//www.trolltech.com/products/qt/opensource.html</span> ** ** If you are unsure which license is appropriate for your use, please ** review the following information: ** http:<span class="comment">//www.trolltech.com/products/qt/licensing.html or contact the</span> ** sales department at sales@trolltech.com. ** ** 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 &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 <span class="comment">// (sizeType == SizeHint)</span> 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; }</pre> <p /><address><hr /><div align="center"> <table width="100%" cellspacing="0" border="0"><tr class="address"> <td width="30%">Copyright © 2006 <a href="trolltech.html">Trolltech</a></td> <td width="40%" align="center"><a href="trademarks.html">Trademarks</a></td> <td width="30%" align="right"><div align="right">Qt 4.2.1</div></td> </tr></table></div></address></body> </html>