explicit SkFontStyleSet_Android(const FontFamily& family,
const SkTypeface_FreeType::Scanner& scanner)
{
const SkString* cannonicalFamilyName = NULL;
if (family.fNames.count() > 0) {
cannonicalFamilyName = &family.fNames[0];
}
// TODO? make this lazy
for (int i = 0; i < family.fFonts.count(); ++i) {
const FontFileInfo& fontFile = family.fFonts[i];
SkString pathName(family.fBasePath);
pathName.append(fontFile.fFileName);
SkAutoTDelete<SkStream> stream(SkStream::NewFromFile(pathName.c_str()));
if (!stream.get()) {
SkDEBUGF(("Requested font file %s does not exist or cannot be opened.\n",
pathName.c_str()));
continue;
}
const int ttcIndex = fontFile.fIndex;
SkString familyName;
SkFontStyle style;
bool isFixedWidth;
if (!scanner.scanFont(stream.get(), ttcIndex, &familyName, &style, &isFixedWidth)) {
SkDEBUGF(("Requested font file %s exists, but is not a valid font.\n",
pathName.c_str()));
continue;
}
int weight = fontFile.fWeight != 0 ? fontFile.fWeight : style.weight();
SkFontStyle::Slant slant = style.slant();
switch (fontFile.fStyle) {
case FontFileInfo::Style::kAuto: slant = style.slant(); break;
case FontFileInfo::Style::kNormal: slant = SkFontStyle::kUpright_Slant; break;
case FontFileInfo::Style::kItalic: slant = SkFontStyle::kItalic_Slant; break;
default: SkASSERT(false); break;
}
style = SkFontStyle(weight, style.width(), slant);
const SkLanguage& lang = family.fLanguage;
uint32_t variant = family.fVariant;
if (kDefault_FontVariant == variant) {
variant = kCompact_FontVariant | kElegant_FontVariant;
}
// The first specified family name overrides the family name found in the font.
// TODO: SkTypeface_AndroidSystem::onCreateFamilyNameIterator should return
// all of the specified family names in addition to the names found in the font.
if (cannonicalFamilyName != NULL) {
familyName = *cannonicalFamilyName;
}
fStyles.push_back().reset(SkNEW_ARGS(SkTypeface_AndroidSystem,
(pathName, ttcIndex,
style, isFixedWidth, familyName,
lang, variant)));
}
}
static void load_embedded_font(const SkTypeface_FreeType::Scanner& scanner,
const uint8_t* data, size_t size, int index,
SkFontMgr_Custom::Families* families)
{
auto stream = skstd::make_unique<SkMemoryStream>(data, size, false);
int numFaces;
if (!scanner.recognizedFont(stream.get(), &numFaces)) {
SkDebugf("---- failed to open <%d> as a font\n", index);
return;
}
for (int faceIndex = 0; faceIndex < numFaces; ++faceIndex) {
bool isFixedPitch;
SkString realname;
SkFontStyle style = SkFontStyle(); // avoid uninitialized warning
if (!scanner.scanFont(stream.get(), faceIndex,
&realname, &style, &isFixedPitch, nullptr))
{
SkDebugf("---- failed to open <%d> <%d> as a font\n", index, faceIndex);
return;
}
SkFontStyleSet_Custom* addTo = find_family(*families, realname.c_str());
if (nullptr == addTo) {
addTo = new SkFontStyleSet_Custom(realname);
families->push_back().reset(addTo);
}
auto data = skstd::make_unique<SkFontData>(std::move(stream), faceIndex, nullptr, 0);
addTo->appendTypeface(sk_make_sp<SkTypeface_Stream>(std::move(data),
style, isFixedPitch,
true, realname));
}
}
static void load_embedded_font(const SkTypeface_FreeType::Scanner& scanner,
const uint8_t* data, size_t size, int index,
SkFontMgr_Custom::Families* families)
{
SkAutoTDelete<SkMemoryStream> stream(new SkMemoryStream(data, size, false));
int numFaces;
if (!scanner.recognizedFont(stream, &numFaces)) {
SkDebugf("---- failed to open <%d> as a font\n", index);
return;
}
for (int faceIndex = 0; faceIndex < numFaces; ++faceIndex) {
bool isFixedPitch;
SkString realname;
SkFontStyle style = SkFontStyle(); // avoid uninitialized warning
if (!scanner.scanFont(stream, faceIndex, &realname, &style, &isFixedPitch, nullptr)) {
SkDebugf("---- failed to open <%d> <%d> as a font\n", index, faceIndex);
return;
}
SkTypeface_Custom* tf =
new SkTypeface_Stream(style, isFixedPitch, true, // system-font (cannot delete)
realname, stream.release(), faceIndex);
SkFontStyleSet_Custom* addTo = find_family(*families, realname.c_str());
if (nullptr == addTo) {
addTo = new SkFontStyleSet_Custom(realname);
families->push_back().reset(addTo);
}
addTo->appendTypeface(tf);
}
}
sk_sp<SkTypeface> onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset> stream,
const SkFontArguments& args) const override {
using Scanner = SkTypeface_FreeType::Scanner;
const size_t length = stream->getLength();
if (!length) {
return nullptr;
}
if (length >= 1024 * 1024 * 1024) {
return nullptr; // don't accept too large fonts (>= 1GB) for safety.
}
bool isFixedPitch;
SkFontStyle style;
SkString name;
Scanner::AxisDefinitions axisDefinitions;
if (!fScanner.scanFont(stream.get(), args.getCollectionIndex(),
&name, &style, &isFixedPitch, &axisDefinitions))
{
return nullptr;
}
SkAutoSTMalloc<4, SkFixed> axisValues(axisDefinitions.count());
Scanner::computeAxisValues(axisDefinitions, args.getVariationDesignPosition(),
axisValues, name);
auto fontData = skstd::make_unique<SkFontData>(std::move(stream),
args.getCollectionIndex(),
axisValues.get(),
axisDefinitions.count());
return sk_sp<SkTypeface>(SkTypeface_FCI::Create(std::move(fontData), std::move(name),
style, isFixedPitch));
}
static void load_directory_fonts(const SkTypeface_FreeType::Scanner& scanner,
const SkString& directory, const char* suffix,
SkFontMgr_Custom::Families* families)
{
SkOSFile::Iter iter(directory.c_str(), suffix);
SkString name;
while (iter.next(&name, false)) {
SkString filename(SkOSPath::Join(directory.c_str(), name.c_str()));
SkAutoTDelete<SkStream> stream(SkStream::NewFromFile(filename.c_str()));
if (!stream.get()) {
SkDebugf("---- failed to open <%s>\n", filename.c_str());
continue;
}
int numFaces;
if (!scanner.recognizedFont(stream, &numFaces)) {
SkDebugf("---- failed to open <%s> as a font\n", filename.c_str());
continue;
}
for (int faceIndex = 0; faceIndex < numFaces; ++faceIndex) {
bool isFixedPitch;
SkString realname;
SkFontStyle style = SkFontStyle(); // avoid uninitialized warning
if (!scanner.scanFont(stream, faceIndex, &realname, &style, &isFixedPitch, NULL)) {
SkDebugf("---- failed to open <%s> <%d> as a font\n",
filename.c_str(), faceIndex);
continue;
}
SkTypeface_Custom* tf = SkNEW_ARGS(SkTypeface_File, (
style,
isFixedPitch,
true, // system-font (cannot delete)
realname,
filename.c_str(),
faceIndex));
SkFontStyleSet_Custom* addTo = find_family(*families, realname.c_str());
if (NULL == addTo) {
addTo = new SkFontStyleSet_Custom(realname);
families->push_back().reset(addTo);
}
addTo->appendTypeface(tf);
}
}
SkOSFile::Iter dirIter(directory.c_str());
while (dirIter.next(&name, true)) {
if (name.startsWith(".")) {
continue;
}
SkString dirname(SkOSPath::Join(directory.c_str(), name.c_str()));
load_directory_fonts(scanner, dirname, suffix, families);
}
}
SkTypeface* onCreateFromStream(SkStreamAsset* bareStream, int ttcIndex) const override {
SkAutoTDelete<SkStreamAsset> stream(bareStream);
const size_t length = stream->getLength();
if (!length) {
return nullptr;
}
if (length >= 1024 * 1024 * 1024) {
return nullptr; // don't accept too large fonts (>= 1GB) for safety.
}
// TODO should the caller give us the style or should we get it from freetype?
SkFontStyle style;
bool isFixedWidth = false;
if (!fScanner.scanFont(stream, 0, nullptr, &style, &isFixedWidth, nullptr)) {
return nullptr;
}
return SkTypeface_FCI::Create(style, isFixedWidth, stream.release(), ttcIndex);
}
sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset> stream,
int ttcIndex) const override {
const size_t length = stream->getLength();
if (!length) {
return nullptr;
}
if (length >= 1024 * 1024 * 1024) {
return nullptr; // don't accept too large fonts (>= 1GB) for safety.
}
// TODO should the caller give us the style or should we get it from freetype?
SkString name;
SkFontStyle style;
bool isFixedPitch = false;
if (!fScanner.scanFont(stream.get(), 0, &name, &style, &isFixedPitch, nullptr)) {
return nullptr;
}
auto fontData = skstd::make_unique<SkFontData>(std::move(stream), ttcIndex, nullptr, 0);
return sk_sp<SkTypeface>(SkTypeface_FCI::Create(std::move(fontData), std::move(name),
style, isFixedPitch));
}