mainwindow.cpp Example File
richtext/syntaxhighlighter/mainwindow.cpp
/****************************************************************************
**
** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
**
** This file is part of the documentation 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:
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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****************************************************************************/
#include <QtGui>
#include "mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
setupFileMenu();
setupEditor();
setCentralWidget(editor);
setWindowTitle(tr("Syntax Highlighter"));
}
void MainWindow::newFile()
{
editor->clear();
}
void MainWindow::openFile(const QString &path)
{
QString fileName = path;
if (fileName.isNull())
fileName = QFileDialog::getOpenFileName(this,
tr("Open File"), "", "C++ Files (*.cpp *.h)");
if (!fileName.isEmpty()) {
QFile file(fileName);
if (file.open(QFile::ReadOnly | QFile::Text))
editor->setPlainText(file.readAll());
}
}
void MainWindow::setupEditor()
{
QFont font;
font.setFamily("Courier");
font.setFixedPitch(true);
font.setPointSize(10);
editor = new QTextEdit;
editor->setFont(font);
highlighter = new Highlighter(editor->document());
QFile file("mainwindow.h");
if (file.open(QFile::ReadOnly | QFile::Text))
editor->setPlainText(file.readAll());
}
void MainWindow::setupFileMenu()
{
QMenu *fileMenu = new QMenu(tr("&File"), this);
menuBar()->addMenu(fileMenu);
fileMenu->addAction(tr("&New"), this, SLOT(newFile()),
QKeySequence(tr("Ctrl+N", "File|New")));
fileMenu->addAction(tr("&Open..."), this, SLOT(openFile()),
QKeySequence(tr("Ctrl+O", "File|Open")));
fileMenu->addAction(tr("E&xit"), qApp, SLOT(quit()),
QKeySequence(tr("Ctrl+Q", "File|Exit")));
}