05fc3aef53
Replace the current license disclaimer in files by a SPDX-License-Identifier. Files that have to be modified by hand are modified. License files are organized under LICENSES directory. Task-number: QTBUG-67283 Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
// Copyright (C) 2019 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include <QtWidgets/QtWidgets>
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int main(int argc, char **argv)
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{
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QApplication app(argc, argv);
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QByteArray content;
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QWidget loadFileUi;
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QVBoxLayout *layout = new QVBoxLayout();
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QPushButton *loadFile = new QPushButton("Load File");
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QLabel *fileInfo = new QLabel("Opened file:");
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fileInfo->setTextInteractionFlags(Qt::TextSelectableByMouse);
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QLabel *fileHash = new QLabel("Sha256:");
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fileHash->setTextInteractionFlags(Qt::TextSelectableByMouse);
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QPushButton *saveFile = new QPushButton("Save File");
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saveFile->setEnabled(false);
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auto onFileReady = [=, &content](const QString &fileName, const QByteArray &fileContents) {
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content = fileContents;
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fileInfo->setText(QString("Opened file: %1 size: %2").arg(fileName).arg(fileContents.size()));
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saveFile->setEnabled(true);
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auto computeDisplayFileHash = [=](){
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QByteArray hash = QCryptographicHash::hash(fileContents, QCryptographicHash::Sha256);
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fileHash->setText(QString("Sha256: %1").arg(QString(hash.toHex())));
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};
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QTimer::singleShot(100, computeDisplayFileHash); // update UI before computing hash
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};
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auto onLoadClicked = [=](){
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QFileDialog::getOpenFileContent("*.*", onFileReady);
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};
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QObject::connect(loadFile, &QPushButton::clicked, onLoadClicked);
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auto onSaveClicked = [=, &content]() {
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QFileDialog::saveFileContent(content, "qtsavefiletest.dat");
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};
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QObject::connect(saveFile, &QPushButton::clicked, onSaveClicked);
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layout->addWidget(loadFile);
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layout->addWidget(fileInfo);
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layout->addWidget(fileHash);
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layout->addWidget(saveFile);
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layout->addStretch();
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loadFileUi.setLayout(layout);
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loadFileUi.show();
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return app.exec();
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}
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