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" |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame^] | 9 | #include "SkMakeUnique.h" |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 10 | #include "SkStream.h" |
mtklein | ac83d62 | 2015-02-11 09:24:19 -0800 | [diff] [blame] | 11 | #include "SkData.h" |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 12 | |
| 13 | enum { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 14 | // these must match the sfnt 'name' enums |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 15 | kFontFamilyName = 0x01, |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 16 | kFullName = 0x04, |
| 17 | kPostscriptName = 0x06, |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 18 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 19 | // These count backwards from 0xFF, so as not to collide with the SFNT |
| 20 | // defines for names in its 'name' table. |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 21 | kFontAxes = 0xFC, |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 22 | kFontIndex = 0xFD, |
bungeman | 9d911d5 | 2015-04-17 11:00:06 -0700 | [diff] [blame] | 23 | kFontFileName = 0xFE, // Remove when MIN_PICTURE_VERSION > 41 |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 24 | kSentinel = 0xFF, |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 25 | }; |
| 26 | |
bungeman | b811378 | 2016-07-25 16:54:59 -0700 | [diff] [blame] | 27 | SkFontDescriptor::SkFontDescriptor() { } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 28 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 29 | static void read_string(SkStream* stream, SkString* string) { |
commit-bot@chromium.org | a8c7f77 | 2014-01-24 21:46:29 +0000 | [diff] [blame] | 30 | const uint32_t length = SkToU32(stream->readPackedUInt()); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 31 | if (length > 0) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 32 | string->resize(length); |
| 33 | stream->read(string->writable_str(), length); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 34 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 35 | } |
| 36 | |
bungeman | 9d911d5 | 2015-04-17 11:00:06 -0700 | [diff] [blame] | 37 | // Remove when MIN_PICTURE_VERSION > 41 |
| 38 | static void skip_string(SkStream* stream) { |
| 39 | const uint32_t length = SkToU32(stream->readPackedUInt()); |
| 40 | if (length > 0) { |
| 41 | stream->skip(length); |
| 42 | } |
| 43 | } |
| 44 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 45 | static void write_string(SkWStream* stream, const SkString& string, uint32_t id) { |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 46 | if (!string.isEmpty()) { |
| 47 | stream->writePackedUInt(id); |
| 48 | stream->writePackedUInt(string.size()); |
| 49 | stream->write(string.c_str(), string.size()); |
| 50 | } |
| 51 | } |
| 52 | |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 53 | static size_t read_uint(SkStream* stream) { |
| 54 | return stream->readPackedUInt(); |
| 55 | } |
| 56 | |
| 57 | static void write_uint(SkWStream* stream, size_t n, uint32_t id) { |
| 58 | stream->writePackedUInt(id); |
| 59 | stream->writePackedUInt(n); |
| 60 | } |
| 61 | |
robertphillips | 3552ba1 | 2016-02-25 10:58:49 -0800 | [diff] [blame] | 62 | bool SkFontDescriptor::Deserialize(SkStream* stream, SkFontDescriptor* result) { |
bungeman | b811378 | 2016-07-25 16:54:59 -0700 | [diff] [blame] | 63 | size_t styleBits = stream->readPackedUInt(); |
| 64 | if (styleBits <= 2) { |
| 65 | // Remove this branch when MIN_PICTURE_VERSION > 45 |
| 66 | result->fStyle = SkFontStyle::FromOldStyle(styleBits); |
| 67 | } else { |
| 68 | result->fStyle = SkFontStyle((styleBits >> 16) & 0xFFFF, |
| 69 | (styleBits >> 8 ) & 0xFF, |
| 70 | static_cast<SkFontStyle::Slant>(styleBits & 0xFF)); |
| 71 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 72 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 73 | SkAutoSTMalloc<4, SkFixed> axis; |
| 74 | size_t axisCount = 0; |
| 75 | size_t index = 0; |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 76 | for (size_t id; (id = stream->readPackedUInt()) != kSentinel;) { |
| 77 | switch (id) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 78 | case kFontFamilyName: |
robertphillips | 3552ba1 | 2016-02-25 10:58:49 -0800 | [diff] [blame] | 79 | read_string(stream, &result->fFamilyName); |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 80 | break; |
| 81 | case kFullName: |
robertphillips | 3552ba1 | 2016-02-25 10:58:49 -0800 | [diff] [blame] | 82 | read_string(stream, &result->fFullName); |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 83 | break; |
| 84 | case kPostscriptName: |
robertphillips | 3552ba1 | 2016-02-25 10:58:49 -0800 | [diff] [blame] | 85 | read_string(stream, &result->fPostscriptName); |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 86 | break; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 87 | case kFontAxes: |
| 88 | axisCount = read_uint(stream); |
| 89 | axis.reset(axisCount); |
| 90 | for (size_t i = 0; i < axisCount; ++i) { |
| 91 | axis[i] = read_uint(stream); |
| 92 | } |
| 93 | break; |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 94 | case kFontIndex: |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 95 | index = read_uint(stream); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 96 | break; |
bungeman | 9d911d5 | 2015-04-17 11:00:06 -0700 | [diff] [blame] | 97 | case kFontFileName: // Remove when MIN_PICTURE_VERSION > 41 |
| 98 | skip_string(stream); |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 99 | break; |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 100 | default: |
| 101 | SkDEBUGFAIL("Unknown id used by a font descriptor"); |
robertphillips | 3552ba1 | 2016-02-25 10:58:49 -0800 | [diff] [blame] | 102 | return false; |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 103 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 104 | } |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 105 | |
| 106 | size_t length = stream->readPackedUInt(); |
| 107 | if (length > 0) { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 108 | sk_sp<SkData> data(SkData::MakeUninitialized(length)); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 109 | if (stream->read(data->writable_data(), length) == length) { |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame^] | 110 | result->fFontData = skstd::make_unique<SkFontData>( |
| 111 | skstd::make_unique<SkMemoryStream>(data), index, axis, axisCount); |
robertphillips | 3552ba1 | 2016-02-25 10:58:49 -0800 | [diff] [blame] | 112 | } else { |
| 113 | SkDEBUGFAIL("Could not read font data"); |
| 114 | return false; |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 115 | } |
| 116 | } |
robertphillips | 3552ba1 | 2016-02-25 10:58:49 -0800 | [diff] [blame] | 117 | return true; |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | void SkFontDescriptor::serialize(SkWStream* stream) { |
bungeman | b811378 | 2016-07-25 16:54:59 -0700 | [diff] [blame] | 121 | uint32_t styleBits = (fStyle.weight() << 16) | (fStyle.width() << 8) | (fStyle.slant()); |
| 122 | stream->writePackedUInt(styleBits); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 123 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 124 | write_string(stream, fFamilyName, kFontFamilyName); |
| 125 | write_string(stream, fFullName, kFullName); |
| 126 | write_string(stream, fPostscriptName, kPostscriptName); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 127 | if (fFontData.get()) { |
| 128 | if (fFontData->getIndex()) { |
| 129 | write_uint(stream, fFontData->getIndex(), kFontIndex); |
| 130 | } |
| 131 | if (fFontData->getAxisCount()) { |
| 132 | write_uint(stream, fFontData->getAxisCount(), kFontAxes); |
| 133 | for (int i = 0; i < fFontData->getAxisCount(); ++i) { |
| 134 | stream->writePackedUInt(fFontData->getAxis()[i]); |
| 135 | } |
| 136 | } |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 137 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 138 | |
| 139 | stream->writePackedUInt(kSentinel); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 140 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 141 | if (fFontData.get() && fFontData->hasStream()) { |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame^] | 142 | std::unique_ptr<SkStreamAsset> fontStream = fFontData->detachStream(); |
| 143 | size_t length = fontStream->getLength(); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 144 | stream->writePackedUInt(length); |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame^] | 145 | stream->writeStream(fontStream.get(), length); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 146 | } else { |
| 147 | stream->writePackedUInt(0); |
| 148 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 149 | } |