// static
SkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace,
const char familyName[],
SkTypeface::Style style)
{
std::string resolved_family_name;
if (familyFace) {
// Given the fileid we can ask fontconfig for the familyname of the
// font.
const unsigned filefaceid = UniqueIdToFileFaceId(familyFace->uniqueID());
if (!GetFcImpl()->Match(&resolved_family_name, NULL,
true /* filefaceid valid */, filefaceid, "",
NULL, 0, NULL, NULL)) {
return NULL;
}
} else if (familyName) {
resolved_family_name = familyName;
}
bool bold = style & SkTypeface::kBold;
bool italic = style & SkTypeface::kItalic;
unsigned filefaceid;
if (!GetFcImpl()->Match(NULL, &filefaceid,
false, -1, /* no filefaceid */
resolved_family_name, NULL, 0,
&bold, &italic)) {
return NULL;
}
const SkTypeface::Style resulting_style = static_cast<SkTypeface::Style>(
(bold ? SkTypeface::kBold : 0) |
(italic ? SkTypeface::kItalic : 0));
const unsigned id = FileFaceIdAndStyleToUniqueId(filefaceid,
resulting_style);
SkTypeface* typeface = SkNEW_ARGS(FontConfigTypeface, (resulting_style, id));
return typeface;
}
void SkFontHost::Serialize(const SkTypeface* face, SkWStream* stream) {
SkFontDescriptor desc(face->style());
std::string resolved_family_name;
const unsigned filefaceid = UniqueIdToFileFaceId(face->uniqueID());
if (GetFcImpl()->Match(&resolved_family_name, NULL,
true /* filefaceid valid */, filefaceid, "", NULL, 0, NULL, NULL))
desc.setFamilyName(resolved_family_name.c_str());
else
desc.setFamilyName("sans-serif");
// would also like other names (see SkFontDescriptor.h)
desc.serialize(stream);
// by convention, we also write out the actual sfnt data, preceeded by
// a packed-length. For now we skip that, so we just write the zero.
stream->writePackedUInt(0);
}
// static
SkStream* SkFontHost::OpenStream(uint32_t id)
{
const unsigned filefaceid = UniqueIdToFileFaceId(id);
if (IsRemoteFont(filefaceid)) {
// remote font
SkAutoMutexAcquire ac(global_remote_font_map_lock);
AllocateGlobalRemoteFontsMapOnce();
std::map<uint32_t, std::pair<uint8_t*, size_t> >::const_iterator iter
= global_remote_fonts->find(id);
if (iter == global_remote_fonts->end())
return NULL;
return SkNEW_ARGS(
SkMemoryStream, (iter->second.first, iter->second.second));
}
// system font
const int fd = GetFcImpl()->Open(filefaceid);
if (fd < 0)
return NULL;
return SkNEW_ARGS(SkFileDescriptorStream, (fd));
}