| 1 | /* |
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| 2 | SPDX-FileCopyrightText: 2022 Albert Astals Cid <aacid@kde.org> |
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| 3 | SPDX-FileCopyrightText: 2022 Mirco Miranda <mircomir@outlook.com> |
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| 4 | |
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| 5 | SPDX-License-Identifier: LGPL-2.0-or-later |
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| 6 | */ |
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| 7 | |
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| 8 | #ifndef UTIL_P_H |
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| 9 | #define UTIL_P_H |
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| 10 | |
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| 11 | #include <limits> |
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| 12 | |
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| 13 | #include <QImage> |
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| 14 | #include <QImageIOHandler> |
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| 15 | |
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| 16 | // QList uses some extra space for stuff, hence the 32 here suggested by Thiago Macieira |
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| 17 | static constexpr int kMaxQVectorSize = std::numeric_limits<int>::max() - 32; |
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| 18 | |
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| 19 | // On Qt 6 to make the plugins fail to allocate if the image size is greater than QImageReader::allocationLimit() |
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| 20 | // it is necessary to allocate the image with QImageIOHandler::allocateImage(). |
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| 21 | inline QImage imageAlloc(const QSize &size, const QImage::Format &format) |
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| 22 | { |
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| 23 | QImage img; |
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| 24 | if (!QImageIOHandler::allocateImage(size, format, image: &img)) { |
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| 25 | img = QImage(); // paranoia |
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| 26 | } |
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| 27 | return img; |
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| 28 | } |
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| 29 | |
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| 30 | inline QImage imageAlloc(qint32 width, qint32 height, const QImage::Format &format) |
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| 31 | { |
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| 32 | return imageAlloc(size: QSize(width, height), format); |
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| 33 | } |
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| 34 | |
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| 35 | #endif // UTIL_P_H |
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| 36 | |
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