examples/richtext/syntaxhighlighter/mainwindow.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/richtext/syntaxhighlighter/mainwindow.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,129 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "mainwindow.h"
+
+//! [0]
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
+{
+    setupFileMenu();
+    setupHelpMenu();
+    setupEditor();
+
+    setCentralWidget(editor);
+    setWindowTitle(tr("Syntax Highlighter"));
+}
+//! [0]
+
+void MainWindow::about()
+{
+    QMessageBox::about(this, tr("About Syntax Highlighter"),
+                tr("<p>The <b>Syntax Highlighter</b> example shows how " \
+                   "to perform simple syntax highlighting by subclassing " \
+                   "the QSyntaxHighlighter class and describing " \
+                   "highlighting rules using regular expressions.</p>"));
+}
+
+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());
+    }
+}
+
+//! [1]
+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());
+}
+//! [1]
+
+void MainWindow::setupFileMenu()
+{
+    QMenu *fileMenu = new QMenu(tr("&File"), this);
+    menuBar()->addMenu(fileMenu);
+
+    fileMenu->addAction(tr("&New"), this, SLOT(newFile()),
+                        QKeySequence::New);
+
+    fileMenu->addAction(tr("&Open..."), this, SLOT(openFile()),
+                        QKeySequence::Open);
+                        
+    fileMenu->addAction(tr("E&xit"), qApp, SLOT(quit()),
+                        QKeySequence::Quit);
+}
+
+void MainWindow::setupHelpMenu()
+{
+    QMenu *helpMenu = new QMenu(tr("&Help"), this);
+    menuBar()->addMenu(helpMenu);
+
+    helpMenu->addAction(tr("&About"), this, SLOT(about()));
+    helpMenu->addAction(tr("About &Qt"), qApp, SLOT(aboutQt()));
+}