<?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 4.6: mainwindow.cpp Example File (xmlpatterns/filetree/mainwindow.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://qt.nokia.com/"><img src="images/qt-logo.png" align="left" 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="functions.html"><font color="#004faf">All Functions</font></a> · <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><h1 class="title">mainwindow.cpp Example File<br /><span class="small-subtitle">xmlpatterns/filetree/mainwindow.cpp</span> </h1> <pre><span class="comment"> /**************************************************************************** ** ** 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. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial Usage ** Licensees holding valid Qt Commercial licenses may use this file in ** accordance with the Qt Commercial License Agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and Nokia. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** $QT_END_LICENSE$ ** ****************************************************************************/</span> #include <QtGui> #include <QLibraryInfo> #include <QtXmlPatterns> #include "mainwindow.h" #include "xmlsyntaxhighlighter.h" MainWindow::MainWindow() : m_fileTree(m_namePool) { setupUi(this); new XmlSyntaxHighlighter(fileTree->document()); <span class="comment">// Set up the font.</span> { QFont font("Courier",10); font.setFixedPitch(true); fileTree->setFont(font); queryEdit->setFont(font); output->setFont(font); } const QString dir(QLibraryInfo::location(QLibraryInfo::ExamplesPath) + "/xmlpatterns/filetree"); qDebug() << dir; if (QDir(dir).exists()) loadDirectory(dir); else fileTree->setPlainText(tr("Use the Open menu entry to select a directory.")); const QStringList queries(QDir(":/queries/", "*.xq").entryList()); int len = queries.count(); for (int i = 0; i < len; ++i) queryBox->addItem(queries.at(i)); } void MainWindow::on_queryBox_currentIndexChanged() { QFile queryFile(":/queries/" + queryBox->currentText()); queryFile.open(QIODevice::ReadOnly); queryEdit->setPlainText(QString::fromLatin1(queryFile.readAll())); evaluateResult(); } void MainWindow::evaluateResult() { if (queryBox->currentText().isEmpty()) return; QXmlQuery query(m_namePool); query.bindVariable("fileTree", m_fileNode); query.setQuery(QUrl("qrc:/queries/" + queryBox->currentText())); QByteArray formatterOutput; QBuffer buffer(&formatterOutput); buffer.open(QIODevice::WriteOnly); QXmlFormatter formatter(query, &buffer); query.evaluateTo(&formatter); output->setText(QString::fromLatin1(formatterOutput.constData())); } void MainWindow::on_actionOpenDirectory_triggered() { const QString directoryName = QFileDialog::getExistingDirectory(this); if (!directoryName.isEmpty()) loadDirectory(directoryName); } void MainWindow::loadDirectory(const QString &directory) { Q_ASSERT(QDir(directory).exists()); m_fileNode = m_fileTree.nodeFor(directory); QXmlQuery query(m_namePool); query.bindVariable("fileTree", m_fileNode); query.setQuery(QUrl("qrc:/queries/wholeTree.xq")); QByteArray output; QBuffer buffer(&output); buffer.open(QIODevice::WriteOnly); QXmlFormatter formatter(query, &buffer); query.evaluateTo(&formatter); treeInfo->setText((QString(tr("Model of %1 output as XML.")).arg(directory))); fileTree->setText(QString::fromLatin1(output.constData())); evaluateResult(); } void MainWindow::on_actionAbout_triggered() { QMessageBox::about(this, tr("About File Tree"), tr("<p>Select <b>File->Open Directory</b> and " "choose a directory. The directory is then " "loaded into the model, and the model is " "displayed on the left as XML.</p>" "<p>From the query menu on the right, select " "a query. The query is displayed and then run " "on the model. The results are displayed below " "the query.</p>")); }</pre> <p /><address><hr /><div align="center"> <table width="100%" cellspacing="0" border="0"><tr class="address"> <td width="40%" align="left">Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies)</td> <td width="20%" align="center"><a href="trademarks.html">Trademarks</a></td> <td width="40%" align="right"><div align="right">Qt 4.6.3</div></td> </tr></table></div></address></body> </html>