third_party/WebKit/Source/platform/fonts/FontCustomPlatformData.cpp

/*
 * Copyright (C) 2007 Apple Computer, Inc.
 * Copyright (c) 2007, 2008, 2009, Google Inc. All rights reserved.
 * Copyright (C) 2010 Company 100, Inc.
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 * notice, this list of conditions and the following disclaimer.
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#include "platform/fonts/FontCustomPlatformData.h"

#include "platform/LayoutTestSupport.h"
#include "platform/SharedBuffer.h"
#include "platform/fonts/FontCache.h"
#include "platform/fonts/FontPlatformData.h"
#include "platform/fonts/opentype/OpenTypeSanitizer.h"
#include "third_party/skia/include/core/SkStream.h"
#include "third_party/skia/include/core/SkTypeface.h"
#include "wtf/PassOwnPtr.h"

namespace blink {

FontCustomPlatformData::FontCustomPlatformData(PassRefPtr<SkTypeface> typeface)
    : m_typeface(typeface) { }

FontCustomPlatformData::~FontCustomPlatformData()
{
}

FontPlatformData FontCustomPlatformData::fontPlatformData(float size, bool bold, bool italic, FontOrientation orientation)
{
    ASSERT(m_typeface);
    return FontPlatformData(m_typeface.get(), "", size, bold && !m_typeface->isBold(), italic && !m_typeface->isItalic(), orientation);
}

PassOwnPtr<FontCustomPlatformData> FontCustomPlatformData::create(SharedBuffer* buffer, String& otsParseMessage)
{
    DCHECK(buffer);

    OpenTypeSanitizer sanitizer(buffer);
    RefPtr<SharedBuffer> transcodeBuffer = sanitizer.sanitize();

    if (!transcodeBuffer) {
        otsParseMessage = sanitizer.getErrorString();
        return nullptr; // validation failed.
    }
    buffer = transcodeBuffer.get();

    SkMemoryStream* stream = new SkMemoryStream(buffer->getAsSkData().get());
#if OS(WIN)
    RefPtr<SkTypeface> typeface = adoptRef(FontCache::fontCache()->fontManager()->createFromStream(stream));
#else
    RefPtr<SkTypeface> typeface = adoptRef(SkTypeface::CreateFromStream(stream));
#endif
    if (!typeface)
        return nullptr;

    return adoptPtr(new FontCustomPlatformData(typeface.release()));
}

bool FontCustomPlatformData::supportsFormat(const String& format)
{
    return equalIgnoringCase(format, "truetype") || equalIgnoringCase(format, "opentype") || OpenTypeSanitizer::supportsFormat(format);
}

} // namespace blink