afb81b8278
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82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#include "lottie/lottie_common.h"
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#include "base/algorithm.h"
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#include <QFile>
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namespace Lottie {
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namespace {
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QByteArray ReadFile(const QString &filepath) {
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auto f = QFile(filepath);
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return (f.size() <= kMaxFileSize && f.open(QIODevice::ReadOnly))
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? f.readAll()
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: QByteArray();
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}
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} // namespace
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QSize FrameRequest::size(
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const QSize &original,
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int sizeRounding) const {
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Expects(!empty());
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Expects(sizeRounding != 0);
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const auto result = original.scaled(box, Qt::KeepAspectRatio);
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const auto skipw = result.width() % sizeRounding;
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const auto skiph = result.height() % sizeRounding;
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return QSize(
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std::max(result.width() - skipw, sizeRounding),
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std::max(result.height() - skiph, sizeRounding));
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}
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QByteArray ReadContent(const QByteArray &data, const QString &filepath) {
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return data.isEmpty() ? ReadFile(filepath) : base::duplicate(data);
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}
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std::string ReadUtf8(const QByteArray &data) {
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//00 00 FE FF UTF-32BE
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//FF FE 00 00 UTF-32LE
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//FE FF UTF-16BE
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//FF FE UTF-16LE
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//EF BB BF UTF-8
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if (data.size() < 4) {
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return data.toStdString();
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}
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const auto bom = uint32(uint8(data[0]))
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| (uint32(uint8(data[1])) << 8)
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| (uint32(uint8(data[2])) << 16)
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| (uint32(uint8(data[3])) << 24);
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const auto skip = ((bom == 0xFFFE0000U) || (bom == 0x0000FEFFU))
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? 4
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: (((bom & 0xFFFFU) == 0xFFFEU) || ((bom & 0xFFFFU) == 0xFEFFU))
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? 2
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: ((bom & 0xFFFFFFU) == 0xBFBBEFU)
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? 3
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: 0;
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const auto bytes = data.data() + skip;
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const auto length = data.size() - skip;
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// Old RapidJSON didn't convert encoding, just skipped BOM.
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// We emulate old behavior here, so don't convert as well.
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return std::string(bytes, length);
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}
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bool GoodStorageForFrame(const QImage &storage, QSize size) {
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return !storage.isNull()
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&& (storage.format() == kImageFormat)
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&& (storage.size() == size)
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&& storage.isDetached();
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}
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QImage CreateFrameStorage(QSize size) {
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return QImage(size, kImageFormat);
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}
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} // namespace Lottie
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