123 lines
4.0 KiB
C++
123 lines
4.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
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** of its contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include "mainwindow.h"
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//! [0]
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MainWindow::MainWindow(QWidget *parent)
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: QMainWindow(parent)
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{
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setupFileMenu();
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setupHelpMenu();
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setupEditor();
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setCentralWidget(editor);
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setWindowTitle(tr("Syntax Highlighter"));
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}
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//! [0]
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void MainWindow::about()
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{
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QMessageBox::about(this, tr("About Syntax Highlighter"),
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tr("<p>The <b>Syntax Highlighter</b> example shows how " \
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"to perform simple syntax highlighting by subclassing " \
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"the QSyntaxHighlighter class and describing " \
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"highlighting rules using regular expressions.</p>"));
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}
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void MainWindow::newFile()
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{
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editor->clear();
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}
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void MainWindow::openFile(const QString &path)
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{
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QString fileName = path;
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if (fileName.isNull())
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fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "", "C++ Files (*.cpp *.h)");
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if (!fileName.isEmpty()) {
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QFile file(fileName);
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if (file.open(QFile::ReadOnly | QFile::Text))
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editor->setPlainText(file.readAll());
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}
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}
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//! [1]
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void MainWindow::setupEditor()
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{
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QFont font;
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font.setFamily("Courier");
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font.setFixedPitch(true);
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font.setPointSize(10);
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editor = new QTextEdit;
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editor->setFont(font);
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highlighter = new Highlighter(editor->document());
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QFile file("mainwindow.h");
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if (file.open(QFile::ReadOnly | QFile::Text))
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editor->setPlainText(file.readAll());
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}
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//! [1]
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void MainWindow::setupFileMenu()
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{
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QMenu *fileMenu = new QMenu(tr("&File"), this);
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menuBar()->addMenu(fileMenu);
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fileMenu->addAction(tr("&New"), this, SLOT(newFile()), QKeySequence::New);
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fileMenu->addAction(tr("&Open..."), this, SLOT(openFile()), QKeySequence::Open);
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fileMenu->addAction(tr("E&xit"), qApp, SLOT(quit()), QKeySequence::Quit);
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}
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void MainWindow::setupHelpMenu()
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{
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QMenu *helpMenu = new QMenu(tr("&Help"), this);
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menuBar()->addMenu(helpMenu);
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helpMenu->addAction(tr("&About"), this, SLOT(about()));
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helpMenu->addAction(tr("About &Qt"), qApp, SLOT(aboutQt()));
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}
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