djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 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 | #include "SkFontDescriptor.h" |
| 9 | #include "SkStream.h" |
mtklein | ac83d62 | 2015-02-11 09:24:19 -0800 | [diff] [blame^] | 10 | #include "SkData.h" |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 11 | |
| 12 | enum { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 13 | // these must match the sfnt 'name' enums |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 14 | kFontFamilyName = 0x01, |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 15 | kFullName = 0x04, |
| 16 | kPostscriptName = 0x06, |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 17 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 18 | // These count backwards from 0xFF, so as not to collide with the SFNT |
| 19 | // defines for names in its 'name' table. |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 20 | kFontIndex = 0xFD, |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 21 | kFontFileName = 0xFE, |
| 22 | kSentinel = 0xFF, |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 23 | }; |
| 24 | |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 25 | SkFontDescriptor::SkFontDescriptor(SkTypeface::Style style) : fFontIndex(0), fStyle(style) { } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 26 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 27 | static void read_string(SkStream* stream, SkString* string) { |
commit-bot@chromium.org | a8c7f77 | 2014-01-24 21:46:29 +0000 | [diff] [blame] | 28 | const uint32_t length = SkToU32(stream->readPackedUInt()); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 29 | if (length > 0) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 30 | string->resize(length); |
| 31 | stream->read(string->writable_str(), length); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 32 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 33 | } |
| 34 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 35 | static void write_string(SkWStream* stream, const SkString& string, |
| 36 | uint32_t id) { |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 37 | if (!string.isEmpty()) { |
| 38 | stream->writePackedUInt(id); |
| 39 | stream->writePackedUInt(string.size()); |
| 40 | stream->write(string.c_str(), string.size()); |
| 41 | } |
| 42 | } |
| 43 | |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 44 | static size_t read_uint(SkStream* stream) { |
| 45 | return stream->readPackedUInt(); |
| 46 | } |
| 47 | |
| 48 | static void write_uint(SkWStream* stream, size_t n, uint32_t id) { |
| 49 | stream->writePackedUInt(id); |
| 50 | stream->writePackedUInt(n); |
| 51 | } |
| 52 | |
| 53 | SkFontDescriptor::SkFontDescriptor(SkStream* stream) : fFontIndex(0) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 54 | fStyle = (SkTypeface::Style)stream->readPackedUInt(); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 55 | |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 56 | for (size_t id; (id = stream->readPackedUInt()) != kSentinel;) { |
| 57 | switch (id) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 58 | case kFontFamilyName: |
| 59 | read_string(stream, &fFamilyName); |
| 60 | break; |
| 61 | case kFullName: |
| 62 | read_string(stream, &fFullName); |
| 63 | break; |
| 64 | case kPostscriptName: |
| 65 | read_string(stream, &fPostscriptName); |
| 66 | break; |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 67 | case kFontIndex: |
| 68 | fFontIndex = read_uint(stream); |
| 69 | break; |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 70 | case kFontFileName: |
| 71 | read_string(stream, &fFontFileName); |
| 72 | break; |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 73 | default: |
| 74 | SkDEBUGFAIL("Unknown id used by a font descriptor"); |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 75 | return; |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 76 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 77 | } |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 78 | |
| 79 | size_t length = stream->readPackedUInt(); |
| 80 | if (length > 0) { |
| 81 | SkAutoTUnref<SkData> data(SkData::NewUninitialized(length)); |
| 82 | if (stream->read(data->writable_data(), length) == length) { |
| 83 | fFontData.reset(SkNEW_ARGS(SkMemoryStream, (data))); |
| 84 | } |
| 85 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 86 | } |
| 87 | |
| 88 | void SkFontDescriptor::serialize(SkWStream* stream) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 89 | stream->writePackedUInt(fStyle); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 90 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 91 | write_string(stream, fFamilyName, kFontFamilyName); |
| 92 | write_string(stream, fFullName, kFullName); |
| 93 | write_string(stream, fPostscriptName, kPostscriptName); |
| 94 | write_string(stream, fFontFileName, kFontFileName); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 95 | if (fFontIndex) { |
| 96 | write_uint(stream, fFontIndex, kFontIndex); |
| 97 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 98 | |
| 99 | stream->writePackedUInt(kSentinel); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 100 | |
| 101 | if (fFontData) { |
| 102 | size_t length = fFontData->getLength(); |
| 103 | stream->writePackedUInt(length); |
| 104 | stream->writeStream(fFontData, length); |
| 105 | } else { |
| 106 | stream->writePackedUInt(0); |
| 107 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 108 | } |