Use FreeType for OpenType Variations on CoreText < 10.12

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.
  *
  * 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
@@ skipping 19 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #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/WebFontDecoder.h"
+#if OS(MACOSX)
+#include "platform/fonts/mac/CoreTextVariationsSupport.h"
+#endif
 #include "platform/fonts/opentype/FontSettings.h"
 #include "third_party/skia/include/core/SkStream.h"
 #include "third_party/skia/include/core/SkTypeface.h"
-#if OS(WIN)
+#if OS(WIN) || OS(MACOSX)
 #include "third_party/skia/include/ports/SkFontMgr_empty.h"
 #endif
 #include "platform/wtf/PtrUtil.h"
 
 namespace blink {
 
 FontCustomPlatformData::FontCustomPlatformData(sk_sp<SkTypeface> typeface,
                                                size_t data_size)
     : base_typeface_(std::move(typeface)), data_size_(data_size) {}
 
@@ skipping 13 matching lines @@
   // which is a 16bit unsigned.
   // https://www.microsoft.com/typography/otspec/fvar.htm Variation
   // settings coming from CSS can have duplicate assignments and the
   // list can be longer than UINT16_MAX, but ignoring the length for
   // now, going with a reasonable upper limit. Deduplication is
   // handled by Skia with priority given to the last occuring
   // assignment.
   if (variation_settings && variation_settings->size() < UINT16_MAX) {
 #if OS(WIN)
     sk_sp<SkFontMgr> fm(SkFontMgr_New_Custom_Empty());
+#elif OS(MACOSX)
+    sk_sp<SkFontMgr> fm;
+    if (CoreTextVersionSupportsVariations())
+      fm = SkFontMgr::RefDefault();
+    else
+      fm = SkFontMgr_New_Custom_Empty();
 #else
     sk_sp<SkFontMgr> fm(SkFontMgr::RefDefault());
 #endif
     Vector<SkFontMgr::FontParameters::Axis, 0> axes;
     axes.ReserveCapacity(variation_settings->size());
     for (size_t i = 0; i < variation_settings->size(); ++i) {
       SkFontMgr::FontParameters::Axis axis = {
           AtomicStringToFourByteTag(variation_settings->at(i).Tag()),
           SkFloatToScalar(variation_settings->at(i).Value())};
       axes.push_back(axis);
@@ skipping 33 matching lines @@
       new FontCustomPlatformData(std::move(typeface), decoder.DecodedSize()));
 }
 
 bool FontCustomPlatformData::SupportsFormat(const String& format) {
   return DeprecatedEqualIgnoringCase(format, "truetype") ||
          DeprecatedEqualIgnoringCase(format, "opentype") ||
          WebFontDecoder::SupportsFormat(format);
 }
 
 }  // namespace blink