1 /* 2 * Copyright 2013 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkFontStream_DEFINED 9 #define SkFontStream_DEFINED 10 11 class SkStream; 12 13 #include "SkTypeface.h" 14 15 class SkFontStream { 16 public: 17 /** 18 * Return the number of shared directories inside a TTC sfnt, or return 1 19 * if the stream is a normal sfnt (ttf). If there is an error or 20 * no directory is found, return 0. 21 * 22 * Note: the stream is rewound initially, but is returned at an arbitrary 23 * read offset. 24 */ 25 static int CountTTCEntries(SkStream*); 26 27 /** 28 * @param ttcIndex 0 for normal sfnts, or the index within a TTC sfnt. 29 * 30 * Note: the stream is rewound initially, but is returned at an arbitrary 31 * read offset. 32 */ 33 static int GetTableTags(SkStream*, int ttcIndex, SkFontTableTag tags[]); 34 35 /** 36 * @param ttcIndex 0 for normal sfnts, or the index within a TTC sfnt. 37 * 38 * Note: the stream is rewound initially, but is returned at an arbitrary 39 * read offset. 40 */ 41 static size_t GetTableData(SkStream*, int ttcIndex, SkFontTableTag tag, 42 size_t offset, size_t length, void* data); 43 44 static size_t GetTableSize(SkStream* stream, int ttcIndex, SkFontTableTag tag) { 45 return GetTableData(stream, ttcIndex, tag, 0, ~0U, nullptr); 46 } 47 }; 48 49 #endif 50
