2017-11-13 10:54:48 +00:00
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/****************************************************************************
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**
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** Copyright (C) 2017 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the documentation of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** 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 The Qt Company Ltd nor the names of its
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** 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 <QFile>
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#include <QFileDialog>
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#include <QTextStream>
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#include <QMessageBox>
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2018-01-15 07:59:09 +00:00
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#if defined(QT_PRINTSUPPORT_LIB)
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#include <QtPrintSupport/qtprintsupportglobal.h>
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#if QT_CONFIG(printer)
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#if QT_CONFIG(printdialog)
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2017-11-13 10:54:48 +00:00
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#include <QPrintDialog>
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2018-01-15 07:59:09 +00:00
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#endif // QT_CONFIG(printdialog)
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2017-11-13 10:54:48 +00:00
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#include <QPrinter>
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2018-01-15 07:59:09 +00:00
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#endif // QT_CONFIG(printer)
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#endif // QT_PRINTSUPPORT_LIB
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2017-11-13 10:54:48 +00:00
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#include <QFont>
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#include <QFontDialog>
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#include "notepad.h"
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#include "ui_notepad.h"
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Notepad::Notepad(QWidget *parent) :
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QMainWindow(parent),
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ui(new Ui::Notepad)
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{
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ui->setupUi(this);
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this->setCentralWidget(ui->textEdit);
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2018-06-22 14:22:45 +00:00
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2018-10-31 16:50:29 +00:00
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connect(ui->actionNew, &QAction::triggered, this, &Notepad::newDocument);
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connect(ui->actionOpen, &QAction::triggered, this, &Notepad::open);
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connect(ui->actionSave, &QAction::triggered, this, &Notepad::save);
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connect(ui->actionSave_as, &QAction::triggered, this, &Notepad::saveAs);
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connect(ui->actionPrint, &QAction::triggered, this, &Notepad::print);
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connect(ui->actionExit, &QAction::triggered, this, &Notepad::exit);
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connect(ui->actionCopy, &QAction::triggered, this, &Notepad::copy);
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connect(ui->actionCut, &QAction::triggered, this, &Notepad::cut);
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connect(ui->actionPaste, &QAction::triggered, this, &Notepad::paste);
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connect(ui->actionUndo, &QAction::triggered, this, &Notepad::undo);
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connect(ui->actionRedo, &QAction::triggered, this, &Notepad::redo);
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connect(ui->actionFont, &QAction::triggered, this, &Notepad::selectFont);
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connect(ui->actionBold, &QAction::triggered, this, &Notepad::setFontBold);
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connect(ui->actionUnderline, &QAction::triggered, this, &Notepad::setFontUnderline);
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connect(ui->actionItalic, &QAction::triggered, this, &Notepad::setFontItalic);
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connect(ui->actionAbout, &QAction::triggered, this, &Notepad::about);
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2018-06-22 14:22:45 +00:00
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// Disable menu actions for unavailable features
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#if !QT_CONFIG(printer)
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ui->actionPrint->setEnabled(false);
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#endif
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#if !QT_CONFIG(clipboard)
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ui->actionCut->setEnabled(false);
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ui->actionCopy->setEnabled(false);
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ui->actionPaste->setEnabled(false);
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#endif
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2017-11-13 10:54:48 +00:00
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}
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Notepad::~Notepad()
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{
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delete ui;
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::newDocument()
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{
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currentFile.clear();
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ui->textEdit->setText(QString());
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::open()
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{
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QString fileName = QFileDialog::getOpenFileName(this, "Open the file");
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QFile file(fileName);
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currentFile = fileName;
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if (!file.open(QIODevice::ReadOnly | QFile::Text)) {
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QMessageBox::warning(this, "Warning", "Cannot open file: " + file.errorString());
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return;
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}
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setWindowTitle(fileName);
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QTextStream in(&file);
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QString text = in.readAll();
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ui->textEdit->setText(text);
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file.close();
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::save()
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{
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QString fileName;
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// If we don't have a filename from before, get one.
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if (currentFile.isEmpty()) {
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fileName = QFileDialog::getSaveFileName(this, "Save");
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currentFile = fileName;
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} else {
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fileName = currentFile;
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}
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QFile file(fileName);
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if (!file.open(QIODevice::WriteOnly | QFile::Text)) {
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QMessageBox::warning(this, "Warning", "Cannot save file: " + file.errorString());
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return;
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}
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setWindowTitle(fileName);
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QTextStream out(&file);
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QString text = ui->textEdit->toPlainText();
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out << text;
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file.close();
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::saveAs()
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2017-11-13 10:54:48 +00:00
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{
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QString fileName = QFileDialog::getSaveFileName(this, "Save as");
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QFile file(fileName);
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if (!file.open(QFile::WriteOnly | QFile::Text)) {
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QMessageBox::warning(this, "Warning", "Cannot save file: " + file.errorString());
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return;
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}
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currentFile = fileName;
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setWindowTitle(fileName);
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QTextStream out(&file);
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QString text = ui->textEdit->toPlainText();
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out << text;
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file.close();
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::print()
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{
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2018-01-15 07:59:09 +00:00
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#if QT_CONFIG(printer)
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2017-11-13 10:54:48 +00:00
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QPrinter printDev;
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2018-01-15 07:59:09 +00:00
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#if QT_CONFIG(printdialog)
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2017-11-13 10:54:48 +00:00
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QPrintDialog dialog(&printDev, this);
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if (dialog.exec() == QDialog::Rejected)
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return;
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2018-01-15 07:59:09 +00:00
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#endif // QT_CONFIG(printdialog)
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2017-11-13 10:54:48 +00:00
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ui->textEdit->print(&printDev);
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2018-01-15 07:59:09 +00:00
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#endif // QT_CONFIG(printer)
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2017-11-13 10:54:48 +00:00
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::exit()
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2017-11-13 10:54:48 +00:00
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{
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QCoreApplication::quit();
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::copy()
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2017-11-13 10:54:48 +00:00
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{
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2018-06-22 14:22:45 +00:00
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#if QT_CONFIG(clipboard)
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2017-11-13 10:54:48 +00:00
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ui->textEdit->copy();
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2018-06-22 14:22:45 +00:00
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#endif
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2017-11-13 10:54:48 +00:00
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::cut()
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2017-11-13 10:54:48 +00:00
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{
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2018-06-22 14:22:45 +00:00
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#if QT_CONFIG(clipboard)
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2017-11-13 10:54:48 +00:00
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ui->textEdit->cut();
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2018-06-22 14:22:45 +00:00
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#endif
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2017-11-13 10:54:48 +00:00
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::paste()
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2017-11-13 10:54:48 +00:00
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{
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2018-06-22 14:22:45 +00:00
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#if QT_CONFIG(clipboard)
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2017-11-13 10:54:48 +00:00
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ui->textEdit->paste();
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2018-06-22 14:22:45 +00:00
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#endif
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2017-11-13 10:54:48 +00:00
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::undo()
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{
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ui->textEdit->undo();
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::redo()
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{
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ui->textEdit->redo();
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::selectFont()
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{
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bool fontSelected;
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QFont font = QFontDialog::getFont(&fontSelected, this);
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if (fontSelected)
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ui->textEdit->setFont(font);
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}
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2018-05-22 10:23:54 +00:00
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2018-10-31 16:50:29 +00:00
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void Notepad::setFontUnderline(bool underline)
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{
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ui->textEdit->setFontUnderline(underline);
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2018-05-22 10:23:54 +00:00
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::setFontItalic(bool italic)
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{
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2018-10-31 16:50:29 +00:00
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ui->textEdit->setFontItalic(italic);
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2018-05-22 10:23:54 +00:00
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::setFontBold(bool bold)
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2018-05-22 10:23:54 +00:00
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{
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2018-10-31 16:50:29 +00:00
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bold ? ui->textEdit->setFontWeight(QFont::Bold) :
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ui->textEdit->setFontWeight(QFont::Normal);
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2018-05-22 10:23:54 +00:00
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}
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2018-10-31 16:50:29 +00:00
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void Notepad::about()
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2018-05-22 10:23:54 +00:00
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{
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QMessageBox::about(this, tr("About MDI"),
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tr("The <b>Notepad</b> example demonstrates how to code a basic "
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"text editor using QtWidgets"));
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}
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