1fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot/* 2fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * Copyright 2012 Google Inc. 3fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * 4fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * Use of this source code is governed by a BSD-style license that can be 5fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * found in the LICENSE file. 6fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot */ 7fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 8fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkFontDescriptor.h" 9fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkMakeUnique.h" 10fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkStream.h" 11fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkData.h" 12fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 13fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotenum { 14fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // these must match the sfnt 'name' enums 15fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot kFontFamilyName = 0x01, 16fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot kFullName = 0x04, 17fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot kPostscriptName = 0x06, 18fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 19fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // These count backwards from 0xFF, so as not to collide with the SFNT 20fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // defines for names in its 'name' table. 21fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot kFontAxes = 0xFC, 22fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot kFontIndex = 0xFD, 23fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot kSentinel = 0xFF, 24fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot}; 25fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 26fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team RobotSkFontDescriptor::SkFontDescriptor() { } 27fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 28fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotstatic void read_string(SkStream* stream, SkString* string) { 29fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const uint32_t length = SkToU32(stream->readPackedUInt()); 30fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (length > 0) { 31fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot string->resize(length); 32fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->read(string->writable_str(), length); 33fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 34fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 35fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 36fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotstatic void write_string(SkWStream* stream, const SkString& string, uint32_t id) { 37fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (!string.isEmpty()) { 38fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->writePackedUInt(id); 39fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->writePackedUInt(string.size()); 40fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->write(string.c_str(), string.size()); 41fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 42fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 43fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 44fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotstatic size_t read_uint(SkStream* stream) { 45fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return stream->readPackedUInt(); 46fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 47fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 48fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotstatic void write_uint(SkWStream* stream, size_t n, uint32_t id) { 49fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->writePackedUInt(id); 50fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->writePackedUInt(n); 51fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 52fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 53fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotbool SkFontDescriptor::Deserialize(SkStream* stream, SkFontDescriptor* result) { 54fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot size_t styleBits = stream->readPackedUInt(); 55fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot result->fStyle = SkFontStyle((styleBits >> 16) & 0xFFFF, 56fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot (styleBits >> 8 ) & 0xFF, 57fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot static_cast<SkFontStyle::Slant>(styleBits & 0xFF)); 58fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 59fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkAutoSTMalloc<4, SkFixed> axis; 60fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot size_t axisCount = 0; 61fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot size_t index = 0; 62fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot for (size_t id; (id = stream->readPackedUInt()) != kSentinel;) { 63fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot switch (id) { 64fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot case kFontFamilyName: 65fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot read_string(stream, &result->fFamilyName); 66fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot break; 67fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot case kFullName: 68fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot read_string(stream, &result->fFullName); 69fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot break; 70fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot case kPostscriptName: 71fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot read_string(stream, &result->fPostscriptName); 72fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot break; 73fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot case kFontAxes: 74fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot axisCount = read_uint(stream); 75fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot axis.reset(axisCount); 76fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot for (size_t i = 0; i < axisCount; ++i) { 77fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot axis[i] = read_uint(stream); 78fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 79fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot break; 80fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot case kFontIndex: 81fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot index = read_uint(stream); 82fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot break; 83fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot default: 84fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkDEBUGFAIL("Unknown id used by a font descriptor"); 85fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return false; 86fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 87fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 88fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 89fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot size_t length = stream->readPackedUInt(); 90fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (length > 0) { 91fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot sk_sp<SkData> data(SkData::MakeUninitialized(length)); 92fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (stream->read(data->writable_data(), length) == length) { 93fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot result->fFontData = skstd::make_unique<SkFontData>( 94fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkMemoryStream::Make(std::move(data)), index, axis, axisCount); 95fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } else { 96fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkDEBUGFAIL("Could not read font data"); 97fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return false; 98fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 99fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 100fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return true; 101fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 102fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 103fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid SkFontDescriptor::serialize(SkWStream* stream) { 104fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot uint32_t styleBits = (fStyle.weight() << 16) | (fStyle.width() << 8) | (fStyle.slant()); 105fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->writePackedUInt(styleBits); 106fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 107fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot write_string(stream, fFamilyName, kFontFamilyName); 108fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot write_string(stream, fFullName, kFullName); 109fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot write_string(stream, fPostscriptName, kPostscriptName); 110fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (fFontData.get()) { 111fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (fFontData->getIndex()) { 112fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot write_uint(stream, fFontData->getIndex(), kFontIndex); 113fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 114fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (fFontData->getAxisCount()) { 115fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot write_uint(stream, fFontData->getAxisCount(), kFontAxes); 116fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot for (int i = 0; i < fFontData->getAxisCount(); ++i) { 117fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->writePackedUInt(fFontData->getAxis()[i]); 118fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 119fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 120fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 121fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 122fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->writePackedUInt(kSentinel); 123fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 124fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (fFontData.get() && fFontData->hasStream()) { 125fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot std::unique_ptr<SkStreamAsset> fontStream = fFontData->detachStream(); 126fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot size_t length = fontStream->getLength(); 127fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->writePackedUInt(length); 128fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->writeStream(fontStream.get(), length); 129fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } else { 130fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot stream->writePackedUInt(0); 131fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 132fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 133