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 | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame^] | 20 | kFontAxes = 0xFC, |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 21 | kFontIndex = 0xFD, |
bungeman | 9d911d5 | 2015-04-17 11:00:06 -0700 | [diff] [blame] | 22 | kFontFileName = 0xFE, // Remove when MIN_PICTURE_VERSION > 41 |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 23 | kSentinel = 0xFF, |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 24 | }; |
| 25 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame^] | 26 | SkFontDescriptor::SkFontDescriptor(SkTypeface::Style style) : fStyle(style) { } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 27 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 28 | static void read_string(SkStream* stream, SkString* string) { |
commit-bot@chromium.org | a8c7f77 | 2014-01-24 21:46:29 +0000 | [diff] [blame] | 29 | const uint32_t length = SkToU32(stream->readPackedUInt()); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 30 | if (length > 0) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 31 | string->resize(length); |
| 32 | stream->read(string->writable_str(), length); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 33 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 34 | } |
| 35 | |
bungeman | 9d911d5 | 2015-04-17 11:00:06 -0700 | [diff] [blame] | 36 | // Remove when MIN_PICTURE_VERSION > 41 |
| 37 | static void skip_string(SkStream* stream) { |
| 38 | const uint32_t length = SkToU32(stream->readPackedUInt()); |
| 39 | if (length > 0) { |
| 40 | stream->skip(length); |
| 41 | } |
| 42 | } |
| 43 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame^] | 44 | 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] | 45 | if (!string.isEmpty()) { |
| 46 | stream->writePackedUInt(id); |
| 47 | stream->writePackedUInt(string.size()); |
| 48 | stream->write(string.c_str(), string.size()); |
| 49 | } |
| 50 | } |
| 51 | |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 52 | static size_t read_uint(SkStream* stream) { |
| 53 | return stream->readPackedUInt(); |
| 54 | } |
| 55 | |
| 56 | static void write_uint(SkWStream* stream, size_t n, uint32_t id) { |
| 57 | stream->writePackedUInt(id); |
| 58 | stream->writePackedUInt(n); |
| 59 | } |
| 60 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame^] | 61 | SkFontDescriptor::SkFontDescriptor(SkStream* stream) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 62 | fStyle = (SkTypeface::Style)stream->readPackedUInt(); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 63 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame^] | 64 | SkAutoSTMalloc<4, SkFixed> axis; |
| 65 | size_t axisCount = 0; |
| 66 | size_t index = 0; |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 67 | for (size_t id; (id = stream->readPackedUInt()) != kSentinel;) { |
| 68 | switch (id) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 69 | case kFontFamilyName: |
| 70 | read_string(stream, &fFamilyName); |
| 71 | break; |
| 72 | case kFullName: |
| 73 | read_string(stream, &fFullName); |
| 74 | break; |
| 75 | case kPostscriptName: |
| 76 | read_string(stream, &fPostscriptName); |
| 77 | break; |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame^] | 78 | case kFontAxes: |
| 79 | axisCount = read_uint(stream); |
| 80 | axis.reset(axisCount); |
| 81 | for (size_t i = 0; i < axisCount; ++i) { |
| 82 | axis[i] = read_uint(stream); |
| 83 | } |
| 84 | break; |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 85 | case kFontIndex: |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame^] | 86 | index = read_uint(stream); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 87 | break; |
bungeman | 9d911d5 | 2015-04-17 11:00:06 -0700 | [diff] [blame] | 88 | case kFontFileName: // Remove when MIN_PICTURE_VERSION > 41 |
| 89 | skip_string(stream); |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 90 | break; |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 91 | default: |
| 92 | SkDEBUGFAIL("Unknown id used by a font descriptor"); |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 93 | return; |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 94 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 95 | } |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 96 | |
| 97 | size_t length = stream->readPackedUInt(); |
| 98 | if (length > 0) { |
| 99 | SkAutoTUnref<SkData> data(SkData::NewUninitialized(length)); |
| 100 | if (stream->read(data->writable_data(), length) == length) { |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame^] | 101 | fFontData.reset(new SkFontData(SkNEW_ARGS(SkMemoryStream, (data)), index, |
| 102 | axis, axisCount)); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 103 | } |
| 104 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | void SkFontDescriptor::serialize(SkWStream* stream) { |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 108 | stream->writePackedUInt(fStyle); |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 109 | |
reed@google.com | 3b700f6 | 2012-05-31 21:16:48 +0000 | [diff] [blame] | 110 | write_string(stream, fFamilyName, kFontFamilyName); |
| 111 | write_string(stream, fFullName, kFullName); |
| 112 | write_string(stream, fPostscriptName, kPostscriptName); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame^] | 113 | if (fFontData.get()) { |
| 114 | if (fFontData->getIndex()) { |
| 115 | write_uint(stream, fFontData->getIndex(), kFontIndex); |
| 116 | } |
| 117 | if (fFontData->getAxisCount()) { |
| 118 | write_uint(stream, fFontData->getAxisCount(), kFontAxes); |
| 119 | for (int i = 0; i < fFontData->getAxisCount(); ++i) { |
| 120 | stream->writePackedUInt(fFontData->getAxis()[i]); |
| 121 | } |
| 122 | } |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 123 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 124 | |
| 125 | stream->writePackedUInt(kSentinel); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 126 | |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame^] | 127 | if (fFontData.get() && fFontData->hasStream()) { |
| 128 | SkAutoTDelete<SkStreamAsset> fontData(fFontData->detachStream()); |
| 129 | size_t length = fontData->getLength(); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 130 | stream->writePackedUInt(length); |
bungeman | 41868fe | 2015-05-20 09:21:04 -0700 | [diff] [blame^] | 131 | stream->writeStream(fontData, length); |
bungeman | d71b757 | 2014-09-18 10:55:32 -0700 | [diff] [blame] | 132 | } else { |
| 133 | stream->writePackedUInt(0); |
| 134 | } |
djsollen@google.com | 9714516 | 2012-05-31 19:55:08 +0000 | [diff] [blame] | 135 | } |