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.
**
** Licensees holding valid Qt Preview licenses may use this file in
** accordance with the Qt Preview License Agreement provided with the
** Software.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
** 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 "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 variableFormat;
variableFormat.setFontWeight(QFont::Bold);
variableFormat.setForeground(Qt::blue);
highlighter.addMapping("\\b[A-Z_]+\\b", variableFormat);
QTextCharFormat singleLineCommentFormat;
singleLineCommentFormat.setBackground(QColor("#77ff77"));
highlighter.addMapping("#[^\n]*", singleLineCommentFormat);
QTextCharFormat quotationFormat;
quotationFormat.setBackground(Qt::cyan);
quotationFormat.setForeground(Qt::blue);
highlighter.addMapping("\".*\"", quotationFormat);
QTextCharFormat functionFormat;
functionFormat.setFontItalic(true);
functionFormat.setForeground(Qt::blue);
highlighter.addMapping("\\b[a-z0-9_]+\\(.*\\)", functionFormat);
QFont font;
font.setFamily("Courier");
font.setFixedPitch(true);
font.setPointSize(10);
editor = new QTextEdit;
editor->setFont(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")));
}