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Diffstat (limited to 'examples/widgets/richtext/syntaxhighlighter/mainwindow.cpp')
-rw-r--r-- | examples/widgets/richtext/syntaxhighlighter/mainwindow.cpp | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/examples/widgets/richtext/syntaxhighlighter/mainwindow.cpp b/examples/widgets/richtext/syntaxhighlighter/mainwindow.cpp new file mode 100644 index 0000000000..ffb02ebb9b --- /dev/null +++ b/examples/widgets/richtext/syntaxhighlighter/mainwindow.cpp @@ -0,0 +1,128 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtWidgets> + +#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())); +} |