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+/* -*- 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"
+#include "u16string.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<SFNTData> Create(const uint8_t *aFontData,
+ uint32_t aDataLength);
+
+ /**
+ * Creates a unique key for the given font data.
+ *
+ * @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);
+
+ ~SFNTData();
+
+ /**
+ * Gets the full name from the name table of the font corresponding to the
+ * index. If the full name string is not present it will use the family space
+ * concatenated with the style.
+ * This will only read names that are already UTF16.
+ *
+ * @param aFontData SFNT data.
+ * @param aDataLength length of aFontData.
+ * @param aU16FullName string to be populated with the full name.
+ * @return true if the full name is successfully read.
+ */
+ bool GetU16FullName(uint32_t aIndex, mozilla::u16string& aU16FullName);
+
+ /**
+ * Populate a Vector with the first UTF16 full name from each name table of
+ * the fonts. If the full name string is not present it will use the family
+ * space concatenated with the style.
+ * This will only read names that are already UTF16.
+ *
+ * @param aU16FullNames the Vector to be populated.
+ * @return true if at least one name found otherwise false.
+ */
+ bool GetU16FullNames(Vector<mozilla::u16string>& aU16FullNames);
+
+ /**
+ * Returns the index for the first UTF16 name matching aU16FullName.
+ *
+ * @param aU16FullName full name to find.
+ * @param aIndex out param for the index if found.
+ * @param aTruncatedLen length to truncate the compared font name to.
+ * @return true if the full name is successfully read.
+ */
+ bool GetIndexForU16Name(const mozilla::u16string& aU16FullName, uint32_t* aIndex,
+ size_t aTruncatedLen = 0);
+
+private:
+
+ SFNTData() {}
+
+ bool AddFont(const uint8_t *aFontData, uint32_t aDataLength,
+ uint32_t aOffset);
+
+ // Internal representation of single font in font file.
+ class Font;
+
+ Vector<Font*> mFonts;
+};
+
+} // gfx
+} // mozilla
+
+#endif // mozilla_gfx_SFNTData_h