FontCustomPlatformData* createFontCustomPlatformData(SharedBuffer* buffer)
{
ASSERT_ARG(buffer, buffer);
#if ENABLE(OPENTYPE_SANITIZER)
OpenTypeSanitizer sanitizer(buffer);
RefPtr<SharedBuffer> transcodeBuffer = sanitizer.sanitize();
if (!transcodeBuffer)
return 0; // validation failed.
buffer = transcodeBuffer.get();
#endif
#if OS(WINDOWS)
// Introduce the font to GDI. AddFontMemResourceEx should be used with care, because it will pollute the process's
// font namespace (Windows has no API for creating an HFONT from data without exposing the font to the
// entire process first).
String fontName = createUniqueFontName();
HANDLE fontReference = renameAndActivateFont(buffer, fontName);
if (!fontReference)
return 0;
return new FontCustomPlatformData(fontReference, fontName);
#elif OS(LINUX) || OS(FREEBSD) || PLATFORM(BREWMP)
RemoteFontStream* stream = new RemoteFontStream(buffer);
SkTypeface* typeface = SkTypeface::CreateFromStream(stream);
if (!typeface)
return 0;
return new FontCustomPlatformData(typeface);
#else
notImplemented();
return 0;
#endif
}
std::unique_ptr<FontCustomPlatformData> createFontCustomPlatformData(SharedBuffer& buffer)
{
String fontName = createUniqueFontName();
HANDLE fontReference = renameAndActivateFont(buffer, fontName);
if (!fontReference)
return nullptr;
return std::make_unique<FontCustomPlatformData>(fontReference, fontName);
}
FontCustomPlatformData* createFontCustomPlatformData(SharedBuffer* buffer)
{
ASSERT_ARG(buffer, buffer);
ASSERT(T2embedLibrary());
RefPtr<SharedBuffer> sfntBuffer;
if (isWOFF(buffer)) {
Vector<char> sfnt;
if (!convertWOFFToSfnt(buffer, sfnt))
return 0;
sfntBuffer = SharedBuffer::adoptVector(sfnt);
buffer = sfntBuffer.get();
}
// Introduce the font to GDI. AddFontMemResourceEx cannot be used, because it will pollute the process's
// font namespace (Windows has no API for creating an HFONT from data without exposing the font to the
// entire process first). TTLoadEmbeddedFont lets us override the font family name, so using a unique name
// we avoid namespace collisions.
String fontName = createUniqueFontName();
// TTLoadEmbeddedFont works only with Embedded OpenType (.eot) data, so we need to create an EOT header
// and prepend it to the font data.
EOTHeader eotHeader;
size_t overlayDst;
size_t overlaySrc;
size_t overlayLength;
if (!getEOTHeader(buffer, eotHeader, overlayDst, overlaySrc, overlayLength))
return 0;
HANDLE fontReference;
ULONG privStatus;
ULONG status;
EOTStream eotStream(eotHeader, buffer, overlayDst, overlaySrc, overlayLength);
LONG loadEmbeddedFontResult = TTLoadEmbeddedFont(&fontReference, TTLOAD_PRIVATE, &privStatus, LICENSE_PREVIEWPRINT, &status, readEmbedProc, &eotStream, const_cast<LPWSTR>(fontName.charactersWithNullTermination()), 0, 0);
if (loadEmbeddedFontResult == E_NONE)
fontName = String();
else {
fontReference = renameAndActivateFont(buffer, fontName);
if (!fontReference)
return 0;
}
return new FontCustomPlatformData(fontReference, fontName);
}
PassOwnPtr<FontCustomPlatformData> FontCustomPlatformData::create(SharedBuffer* buffer)
{
ASSERT_ARG(buffer, buffer);
OpenTypeSanitizer sanitizer(buffer);
RefPtr<SharedBuffer> transcodeBuffer = sanitizer.sanitize();
if (!transcodeBuffer)
return nullptr; // validation failed.
buffer = transcodeBuffer.get();
// Introduce the font to GDI. AddFontMemResourceEx should be used with care, because it will pollute the process's
// font namespace (Windows has no API for creating an HFONT from data without exposing the font to the
// entire process first).
String fontName = createUniqueFontName();
HANDLE fontReference = renameAndActivateFont(buffer, fontName);
if (!fontReference)
return nullptr;
return adoptPtr(new FontCustomPlatformData(fontReference, fontName));
}
