mirror of
https://github.com/crystalidea/qt6windows7.git
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89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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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"), QKeySequence::New,
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this, &MainWindow::newFile);
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fileMenu->addAction(tr("&Open..."), QKeySequence::Open,
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this, [this](){ openFile(); });
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fileMenu->addAction(tr("E&xit"), QKeySequence::Quit,
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qApp, &QApplication::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, &MainWindow::about);
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helpMenu->addAction(tr("About &Qt"), qApp, &QApplication::aboutQt);
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}
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