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mainwindow.cpp Example File
^{assistant/simpletextviewer/mainwindow.cpp}

 /****************************************************************************
 **
 ** Copyright (C) 2005-2007 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://www.trolltech.com/products/qt/opensource.html
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 ** If you are unsure which license is appropriate for your use, please
 ** review the following information:
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 ** sales department at [email protected].
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 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 ****************************************************************************/

 #include <QtGui>

 #include "mainwindow.h"
 #include "findfiledialog.h"

 MainWindow::MainWindow()
 {
     textViewer = new QTextEdit;
     textViewer->setReadOnly(true);
     QFile file("documentation/intro.html");
     if (file.open(QIODevice::ReadOnly))
         textViewer->setHtml(file.readAll());

     setCentralWidget(textViewer);

     createActions();
     createMenus();

     initializeAssistant();

     setWindowTitle(tr("Simple Text Viewer"));
     resize(750, 400);
 }

 void MainWindow::closeEvent(QCloseEvent *)
 {
     if (assistantClient)
         assistantClient->closeAssistant();
 }

 void MainWindow::about()
 {
     QMessageBox::about(this, tr("About Simple Text Viewer"),
                          tr("This example demonstrates how to use\n" \
                             "Qt Assistant as help system for your\n" \
                             "own application."));
 }

 void MainWindow::assistant()
 {
     assistantClient->showPage(QLibraryInfo::location(QLibraryInfo::ExamplesPath) +
                                               QDir::separator() +
                                               "assistant/simpletextviewer/documentation/index.html");
 }

 void MainWindow::open()
 {
     FindFileDialog dialog(textViewer, assistantClient);
     dialog.exec();
 }

 void MainWindow::createActions()
 {
     assistantAct = new QAction(tr("Help Contents"), this);
     assistantAct->setShortcut(tr("F1"));
     connect(assistantAct, SIGNAL(triggered()), this, SLOT(assistant()));

     openAct = new QAction(tr("&Open..."), this);
     openAct->setShortcut(tr("Ctrl+O"));
     connect(openAct, SIGNAL(triggered()), this, SLOT(open()));

     clearAct = new QAction(tr("&Clear"), this);
     clearAct->setShortcut(tr("Ctrl+C"));
     connect(clearAct, SIGNAL(triggered()), textViewer, SLOT(clear()));

     exitAct = new QAction(tr("E&xit"), this);
     exitAct->setShortcut(tr("Ctrl+Q"));
     connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));

     aboutAct = new QAction(tr("&About"), this);
     connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));

     aboutQtAct = new QAction(tr("About &Qt"), this);
     connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
 }

 void MainWindow::createMenus()
 {
     fileMenu = new QMenu(tr("&File"), this);
     fileMenu->addAction(openAct);
     fileMenu->addAction(clearAct);
     fileMenu->addSeparator();
     fileMenu->addAction(exitAct);

     helpMenu = new QMenu(tr("&Help"), this);
     helpMenu->addAction(assistantAct);
     helpMenu->addSeparator();
     helpMenu->addAction(aboutAct);
     helpMenu->addAction(aboutQtAct);

     menuBar()->addMenu(fileMenu);
     menuBar()->addMenu(helpMenu);
 }

 void MainWindow::initializeAssistant()
 {
     assistantClient = new QAssistantClient(QLibraryInfo::location(QLibraryInfo::BinariesPath), this);

     QStringList arguments;
     arguments << "-profile" << QString("documentation") + QDir::separator() + QString("simpletextviewer.adp");
     assistantClient->setArguments(arguments);
 }