mainwindow.cpp Example File
richtext/syntaxhighlighter/mainwindow.cpp
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** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
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** This file is part of the documentation of the Qt Toolkit.
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** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
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** See http://www.trolltech.com/gpl/ for GPL licensing information.
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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"), "", "qmake Files (*.pro *.prf *.pri)");
if (!fileName.isEmpty()) {
QFile file(fileName);
if (file.open(QFile::ReadOnly | QFile::Text))
editor->setPlainText(file.readAll());
}
}
void MainWindow::setupEditor()
{
QTextCharFormat defaultFormat;
defaultFormat.setFontFamily("Courier");
defaultFormat.setFontPointSize(10);
QTextCharFormat variableFormat = defaultFormat;
variableFormat.setFontWeight(QFont::Bold);
variableFormat.setForeground(Qt::blue);
highlighter.addMapping("\\b[A-Z_]+\\b", variableFormat);
QTextCharFormat singleLineCommentFormat = defaultFormat;
singleLineCommentFormat.setBackground(QColor("#77ff77"));
highlighter.addMapping("#[^\n]*", singleLineCommentFormat);
QTextCharFormat quotationFormat = defaultFormat;
quotationFormat.setBackground(Qt::cyan);
quotationFormat.setForeground(Qt::blue);
highlighter.addMapping("\".*\"", quotationFormat);
QTextCharFormat functionFormat = defaultFormat;
functionFormat.setFontItalic(true);
functionFormat.setForeground(Qt::blue);
highlighter.addMapping("\\b[a-z0-9_]+\\(.*\\)", functionFormat);
editor = new QTextEdit;
editor->setFont(defaultFormat.font());
editor->document()->setDefaultFont(defaultFormat.font());
highlighter.addToDocument(editor->document());
}
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")));
}