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 { |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 14 | kInvalid = 0x00, |
| 15 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 16 | // these must match the sfnt 'name' enums |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 17 | kFontFamilyName = 0x01, |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 18 | kFullName = 0x04, |
| 19 | kPostscriptName = 0x06, |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 20 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 21 | // These count backwards from 0xFF, so as not to collide with the SFNT |
| 22 | // defines for names in its 'name' table. |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 23 | kFontAxes = 0xFB, |
| 24 | kFontAxes_bad = 0xFC, // Broken negative axes, remove when MIN_PICTURE_VERSION > 62. |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 25 | kFontIndex = 0xFD, |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 26 | kSentinel = 0xFF, |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 27 | }; |
| 28 | |
bungeman | b811378 | 2016-07-25 16:54:59 -0700 | [diff] [blame] | 29 | SkFontDescriptor::SkFontDescriptor() { } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 30 | |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 31 | static bool SK_WARN_UNUSED_RESULT read_string(SkStream* stream, SkString* string) { |
| 32 | size_t length; |
| 33 | if (!stream->readPackedUInt(&length)) { return false; } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 34 | if (length > 0) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 35 | string->resize(length); |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 36 | if (stream->read(string->writable_str(), length) != length) { return false; } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 37 | } |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 38 | return true; |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 39 | } |
| 40 | |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 41 | static bool write_string(SkWStream* stream, const SkString& string, uint32_t id) { |
| 42 | if (string.isEmpty()) { return true; } |
| 43 | return stream->writePackedUInt(id) && |
| 44 | stream->writePackedUInt(string.size()) && |
| 45 | stream->write(string.c_str(), string.size()); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 46 | } |
| 47 | |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 48 | static bool write_uint(SkWStream* stream, size_t n, uint32_t id) { |
| 49 | return stream->writePackedUInt(id) && |
| 50 | stream->writePackedUInt(n); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 51 | } |
| 52 | |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 53 | static size_t SK_WARN_UNUSED_RESULT read_id(SkStream* stream) { |
| 54 | size_t i; |
| 55 | if (!stream->readPackedUInt(&i)) { return kInvalid; } |
| 56 | return i; |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 57 | } |
| 58 | |
robertphillips | 3552ba1 | 2016-02-25 10:58:49 -0800 | [diff] [blame] | 59 | bool SkFontDescriptor::Deserialize(SkStream* stream, SkFontDescriptor* result) { |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 60 | size_t styleBits; |
| 61 | if (!stream->readPackedUInt(&styleBits)) { return false; } |
Ben Wagner | d40b3b0 | 2017-10-12 17:11:54 -0400 | [diff] [blame] | 62 | result->fStyle = SkFontStyle((styleBits >> 16) & 0xFFFF, |
| 63 | (styleBits >> 8 ) & 0xFF, |
| 64 | static_cast<SkFontStyle::Slant>(styleBits & 0xFF)); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 65 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 66 | SkAutoSTMalloc<4, SkFixed> axis; |
| 67 | size_t axisCount = 0; |
| 68 | size_t index = 0; |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 69 | for (size_t id; (id = read_id(stream)) != kSentinel;) { |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 70 | switch (id) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 71 | case kFontFamilyName: |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 72 | if (!read_string(stream, &result->fFamilyName)) { return false; } |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 73 | break; |
| 74 | case kFullName: |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 75 | if (!read_string(stream, &result->fFullName)) { return false; } |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 76 | break; |
| 77 | case kPostscriptName: |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 78 | if (!read_string(stream, &result->fPostscriptName)) { return false; } |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 79 | break; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 80 | case kFontAxes: |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 81 | if (!stream->readPackedUInt(&axisCount)) { return false; } |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 82 | axis.reset(axisCount); |
| 83 | for (size_t i = 0; i < axisCount; ++i) { |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 84 | if (!stream->readS32(&axis[i])) { return false; } |
| 85 | } |
| 86 | break; |
| 87 | case kFontAxes_bad: |
| 88 | if (!stream->readPackedUInt(&axisCount)) { return false; } |
| 89 | axis.reset(axisCount); |
| 90 | for (size_t i = 0; i < axisCount; ++i) { |
| 91 | size_t packedAxis; |
| 92 | if (!stream->readPackedUInt(&packedAxis)) { return false; } |
| 93 | axis[i] = packedAxis; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 94 | } |
| 95 | break; |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 96 | case kFontIndex: |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 97 | if (!stream->readPackedUInt(&index)) { return false; } |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 98 | break; |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 99 | default: |
| 100 | SkDEBUGFAIL("Unknown id used by a font descriptor"); |
robertphillips | 3552ba1 | 2016-02-25 10:58:49 -0800 | [diff] [blame] | 101 | return false; |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 102 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 103 | } |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 104 | |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 105 | size_t length; |
| 106 | if (!stream->readPackedUInt(&length)) { return false; } |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 107 | if (length > 0) { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 108 | sk_sp<SkData> data(SkData::MakeUninitialized(length)); |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 109 | if (stream->read(data->writable_data(), length) != length) { |
robertphillips | 3552ba1 | 2016-02-25 10:58:49 -0800 | [diff] [blame] | 110 | SkDEBUGFAIL("Could not read font data"); |
| 111 | return false; |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 112 | } |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 113 | result->fFontData = skstd::make_unique<SkFontData>( |
| 114 | SkMemoryStream::Make(std::move(data)), index, axis, axisCount); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 115 | } |
robertphillips | 3552ba1 | 2016-02-25 10:58:49 -0800 | [diff] [blame] | 116 | return true; |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 117 | } |
| 118 | |
Mike Reed | bf67741 | 2018-09-03 12:34:54 -0400 | [diff] [blame^] | 119 | void SkFontDescriptor::serialize(SkWStream* stream) const { |
bungeman | b811378 | 2016-07-25 16:54:59 -0700 | [diff] [blame] | 120 | uint32_t styleBits = (fStyle.weight() << 16) | (fStyle.width() << 8) | (fStyle.slant()); |
| 121 | stream->writePackedUInt(styleBits); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 122 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 123 | write_string(stream, fFamilyName, kFontFamilyName); |
| 124 | write_string(stream, fFullName, kFullName); |
| 125 | write_string(stream, fPostscriptName, kPostscriptName); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 126 | if (fFontData.get()) { |
| 127 | if (fFontData->getIndex()) { |
| 128 | write_uint(stream, fFontData->getIndex(), kFontIndex); |
| 129 | } |
| 130 | if (fFontData->getAxisCount()) { |
| 131 | write_uint(stream, fFontData->getAxisCount(), kFontAxes); |
| 132 | for (int i = 0; i < fFontData->getAxisCount(); ++i) { |
Ben Wagner | 255ab8d | 2016-10-07 15:50:53 -0400 | [diff] [blame] | 133 | stream->write32(fFontData->getAxis()[i]); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 134 | } |
| 135 | } |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 136 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 137 | |
| 138 | stream->writePackedUInt(kSentinel); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 139 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame] | 140 | if (fFontData.get() && fFontData->hasStream()) { |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame] | 141 | std::unique_ptr<SkStreamAsset> fontStream = fFontData->detachStream(); |
| 142 | size_t length = fontStream->getLength(); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 143 | stream->writePackedUInt(length); |
bungeman | f93d711 | 2016-09-16 06:24:20 -0700 | [diff] [blame] | 144 | stream->writeStream(fontStream.get(), length); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 145 | } else { |
| 146 | stream->writePackedUInt(0); |
| 147 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 148 | } |