cf27d9e8a5
Cleanup the Widget examples - use the new signal/slot syntax where possible - painting and richtext subdirectory Change-Id: If0e365ab1cabf9184076595494cfca151406fddf Reviewed-by: Luca Beldi <v.ronin@yahoo.it> Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
136 lines
4.6 KiB
C++
136 lines
4.6 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
**
|
|
** BSD License Usage
|
|
** Alternatively, 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 The Qt Company Ltd 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,
|
|
&MainWindow::newFile, QKeySequence::New);
|
|
fileMenu->addAction(tr("&Open..."),
|
|
this, [this](){ openFile(); }, QKeySequence::Open);
|
|
fileMenu->addAction(tr("E&xit"), qApp,
|
|
&QApplication::quit, QKeySequence::Quit);
|
|
}
|
|
|
|
void MainWindow::setupHelpMenu()
|
|
{
|
|
QMenu *helpMenu = new QMenu(tr("&Help"), this);
|
|
menuBar()->addMenu(helpMenu);
|
|
|
|
helpMenu->addAction(tr("&About"), this, &MainWindow::about);
|
|
helpMenu->addAction(tr("About &Qt"), qApp, &QApplication::aboutQt);
|
|
}
|