(DO NOT LAND, EXPERIMENTAL) os/2

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

 /*
  * Copyright (C) 2005, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 19 matching lines @@
 #include "config.h"
 #include "platform/fonts/SimpleFontData.h"
 
 #include "SkPaint.h"
 #include "SkPath.h"
 #include "SkTypeface.h"
 #include "SkTypes.h"
 #include "SkUtils.h"
 #include "platform/fonts/FontDescription.h"
 #include "platform/fonts/GlyphPage.h"
+#include "platform/fonts/OpenType/OpenTypeOS2Table.h"
 #include "platform/fonts/VDMXParser.h"
 #include "platform/geometry/FloatRect.h"
 #include "wtf/MathExtras.h"
 #include "wtf/Partitions.h"
 #include "wtf/text/CharacterNames.h"
 #include "wtf/text/Unicode.h"
 #include <unicode/normlzr.h>
 
 namespace blink {
 
@@ skipping 43 matching lines @@
     }
 
     SkPaint paint;
     SkPaint::FontMetrics metrics;
 
     m_platformData.setupPaint(&paint);
     paint.getFontMetrics(&metrics);
     SkTypeface* face = paint.getTypeface();
     ASSERT(face);
 
+    int16_t ascentInUnits, descentInUnits;
+    getAscentDescentFromOS2Table(face, ascentInUnits, descentInUnits);
+
     int vdmxAscent = 0, vdmxDescent = 0;
     bool isVDMXValid = false;
 
 #if OS(LINUX) || OS(ANDROID)
     // Manually digging up VDMX metrics is only applicable when bytecode hinting using FreeType.
     // With GDI, the metrics will already have taken this into account (as needed).
     // With DirectWrite or CoreText, no bytecode hinting is ever done.
     // This code should be pushed into FreeType (hinted font metrics).
     static const uint32_t vdmxTag = SkSetFourByteTag('V', 'D', 'M', 'X');
     int pixelSize = m_platformData.size() + 0.5;
@@ skipping 362 matching lines @@
         if (glyphs[i]) {
             pageToFill->setGlyphDataForIndex(offset + i, glyphs[i], this);
             haveGlyphs = true;
         }
     }
 
     return haveGlyphs;
 }
 
 } // namespace blink