diff options
Diffstat (limited to 'examples/qtconcurrent/imagescaling/imagescaling.h')
| -rw-r--r-- | examples/qtconcurrent/imagescaling/imagescaling.h | 62 |
1 files changed, 12 insertions, 50 deletions
diff --git a/examples/qtconcurrent/imagescaling/imagescaling.h b/examples/qtconcurrent/imagescaling/imagescaling.h index 0c0d90870e..bc25161a85 100644 --- a/examples/qtconcurrent/imagescaling/imagescaling.h +++ b/examples/qtconcurrent/imagescaling/imagescaling.h @@ -1,58 +1,12 @@ -/**************************************************************************** -** -** Copyright (C) 2020 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause #ifndef IMAGESCALING_H #define IMAGESCALING_H #include <QtWidgets> #include <QtConcurrent> #include <QNetworkAccessManager> +#include <optional> class DownloadDialog; class Images : public QWidget @@ -65,7 +19,6 @@ public: void initLayout(qsizetype count); QFuture<QByteArray> download(const QList<QUrl> &urls); - QList<QImage> scaled() const; void updateStatus(const QString &msg); void showImages(const QList<QImage> &images); void abortDownload(); @@ -74,7 +27,15 @@ public slots: void process(); void cancel(); +private slots: + void scaleFinished(); + private: + //! [1] + using OptionalImages = std::optional<QList<QImage>>; + //! [1] + static OptionalImages scaled(const QList<QByteArray> &data); + QPushButton *addUrlsButton; QPushButton *cancelButton; QVBoxLayout *mainLayout; @@ -86,6 +47,7 @@ private: QNetworkAccessManager qnam; QList<QSharedPointer<QNetworkReply>> replies; QFuture<QByteArray> downloadFuture; + QFutureWatcher<OptionalImages> scalingWatcher; }; #endif // IMAGESCALING_H |