Revert of Revert of Remove Mac native font type members from FontPlatformData

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.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#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);
+#if OS(WIN)
+    if (!FontCache::useDirectWrite()) {
+        // FIXME: Skia currently renders synthetic bold and italics with
+        // hinting and without linear metrics on the windows GDI backend
+        // while the DirectWrite backend does the right thing. Using
+        // CreateFromName and specifying the bold/italics style allows
+        // for proper rendering of synthetic style. Once Skia has been
+        // updated this workaround will no longer be needed.
+        // http://crbug.com/332958
+        bool syntheticBold = bold && !m_typeface->isBold();
+        bool syntheticItalic = italic && !m_typeface->isItalic();
+        if (syntheticBold || syntheticItalic) {
+            SkString name;
+            m_typeface->getFamilyName(&name);
+
+            int style = SkTypeface::kNormal;
+            if (syntheticBold)
+                style |= SkTypeface::kBold;
+            if (syntheticItalic)
+                style |= SkTypeface::kItalic;
+
+            RefPtr<SkTypeface> typeface = adoptRef(FontCache::fontCache()->fontManager()->legacyCreateTypeface(name.c_str(), static_cast<SkTypeface::Style>(style)));
+            syntheticBold = false;
+            syntheticItalic = false;
+            return FontPlatformData(typeface.release(), "", size, syntheticBold, syntheticItalic, orientation);
+        }
+    }
+#endif
+    return FontPlatformData(m_typeface.get(), "", size, bold && !m_typeface->isBold(), italic && !m_typeface->isItalic(), orientation);
+}
+
+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();
+
+    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