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Diffstat (limited to 'examples/widgets/mainwindows/mdi/mdichild.cpp')
| -rw-r--r-- | examples/widgets/mainwindows/mdi/mdichild.cpp | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/examples/widgets/mainwindows/mdi/mdichild.cpp b/examples/widgets/mainwindows/mdi/mdichild.cpp deleted file mode 100644 index 727d4f6cfd..0000000000 --- a/examples/widgets/mainwindows/mdi/mdichild.cpp +++ /dev/null @@ -1,197 +0,0 @@ -/**************************************************************************** -** -** 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 "mdichild.h" - -MdiChild::MdiChild() -{ - setAttribute(Qt::WA_DeleteOnClose); - isUntitled = true; -} - -void MdiChild::newFile() -{ - static int sequenceNumber = 1; - - isUntitled = true; - curFile = tr("document%1.txt").arg(sequenceNumber++); - setWindowTitle(curFile + "[*]"); - - connect(document(), &QTextDocument::contentsChanged, - this, &MdiChild::documentWasModified); -} - -bool MdiChild::loadFile(const QString &fileName) -{ - QFile file(fileName); - if (!file.open(QFile::ReadOnly | QFile::Text)) { - QMessageBox::warning(this, tr("MDI"), - tr("Cannot read file %1:\n%2.") - .arg(fileName) - .arg(file.errorString())); - return false; - } - - QTextStream in(&file); - QGuiApplication::setOverrideCursor(Qt::WaitCursor); - setPlainText(in.readAll()); - QGuiApplication::restoreOverrideCursor(); - - setCurrentFile(fileName); - - connect(document(), &QTextDocument::contentsChanged, - this, &MdiChild::documentWasModified); - - return true; -} - -bool MdiChild::save() -{ - if (isUntitled) { - return saveAs(); - } else { - return saveFile(curFile); - } -} - -bool MdiChild::saveAs() -{ - QString fileName = QFileDialog::getSaveFileName(this, tr("Save As"), - curFile); - if (fileName.isEmpty()) - return false; - - return saveFile(fileName); -} - -bool MdiChild::saveFile(const QString &fileName) -{ - QString errorMessage; - - QGuiApplication::setOverrideCursor(Qt::WaitCursor); - QSaveFile file(fileName); - if (file.open(QFile::WriteOnly | QFile::Text)) { - QTextStream out(&file); - out << toPlainText(); - if (!file.commit()) { - errorMessage = tr("Cannot write file %1:\n%2.") - .arg(QDir::toNativeSeparators(fileName), file.errorString()); - } - } else { - errorMessage = tr("Cannot open file %1 for writing:\n%2.") - .arg(QDir::toNativeSeparators(fileName), file.errorString()); - } - QGuiApplication::restoreOverrideCursor(); - - if (!errorMessage.isEmpty()) { - QMessageBox::warning(this, tr("MDI"), errorMessage); - return false; - } - - setCurrentFile(fileName); - return true; -} - -QString MdiChild::userFriendlyCurrentFile() -{ - return strippedName(curFile); -} - -void MdiChild::closeEvent(QCloseEvent *event) -{ - if (maybeSave()) { - event->accept(); - } else { - event->ignore(); - } -} - -void MdiChild::documentWasModified() -{ - setWindowModified(document()->isModified()); -} - -bool MdiChild::maybeSave() -{ - if (!document()->isModified()) - return true; - const QMessageBox::StandardButton ret - = QMessageBox::warning(this, tr("MDI"), - tr("'%1' has been modified.\n" - "Do you want to save your changes?") - .arg(userFriendlyCurrentFile()), - QMessageBox::Save | QMessageBox::Discard - | QMessageBox::Cancel); - switch (ret) { - case QMessageBox::Save: - return save(); - case QMessageBox::Cancel: - return false; - default: - break; - } - return true; -} - -void MdiChild::setCurrentFile(const QString &fileName) -{ - curFile = QFileInfo(fileName).canonicalFilePath(); - isUntitled = false; - document()->setModified(false); - setWindowModified(false); - setWindowTitle(userFriendlyCurrentFile() + "[*]"); -} - -QString MdiChild::strippedName(const QString &fullFileName) -{ - return QFileInfo(fullFileName).fileName(); -} |