From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- gfx/2d/SFNTData.h | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 gfx/2d/SFNTData.h (limited to 'gfx/2d/SFNTData.h') diff --git a/gfx/2d/SFNTData.h b/gfx/2d/SFNTData.h new file mode 100644 index 0000000000..334438efc0 --- /dev/null +++ b/gfx/2d/SFNTData.h @@ -0,0 +1,59 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef mozilla_gfx_SFNTData_h +#define mozilla_gfx_SFNTData_h + +#include "mozilla/UniquePtr.h" +#include "mozilla/Vector.h" + +namespace mozilla { +namespace gfx { + +class SFNTData final { + public: + /** + * Creates an SFNTData if the header is a format that we understand and + * aDataLength is sufficient for the length information in the header data. + * Note that the data is NOT copied, so must exist the SFNTData's lifetime. + * + * @param aFontData the SFNT data. + * @param aDataLength length + * @return UniquePtr to a SFNTData or nullptr if the header is invalid. + */ + static UniquePtr Create(const uint8_t* aFontData, + uint32_t aDataLength); + + /** + * Creates a unique key for the given font data and variation settings. + * + * @param aFontData the SFNT data + * @param aDataLength length + * @return unique key to be used for caching + */ + static uint64_t GetUniqueKey(const uint8_t* aFontData, uint32_t aDataLength, + uint32_t aVarDataSize, const void* aVarData); + + ~SFNTData(); + + private: + SFNTData() = default; + + bool AddFont(const uint8_t* aFontData, uint32_t aDataLength, + uint32_t aOffset); + + uint32_t HashHeadAndCmapTables(); + + // Internal representation of single font in font file. + class Font; + + Vector mFonts; +}; + +} // namespace gfx +} // namespace mozilla + +#endif // mozilla_gfx_SFNTData_h -- cgit v1.2.3