Initial implementation of font-size-adjust

Source/core/css/resolver/FontBuilder.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 35 matching lines @@
     void didChangeEffectiveZoom();
     void didChangeTextOrientation();
     void didChangeWritingMode();
 
     FontFamily standardFontFamily() const;
     AtomicString standardFontFamilyName() const;
     AtomicString genericFontFamilyName(FontDescription::GenericFamilyType) const;
 
     void setWeight(FontWeight);
     void setSize(const FontDescription::Size&);
+    void setSizeAdjust(const float aspectValue);
     void setStretch(FontStretch);
     void setFamilyDescription(const FontDescription::FamilyDescription&);
     void setFeatureSettings(PassRefPtr<FontFeatureSettings>);
     void setScript(const AtomicString& locale);
     void setStyle(FontStyle);
     void setVariant(FontVariant);
     void setVariantLigatures(const FontDescription::VariantLigatures&);
     void setTextRendering(TextRenderingMode);
     void setKerning(FontDescription::Kerning);
     void setFontSmoothing(FontSmoothingMode);
 
     // FIXME: These need to just vend a Font object eventually.
     void createFont(PassRefPtrWillBeRawPtr<FontSelector>, LayoutStyle&);
 
     void createFontForDocument(PassRefPtrWillBeRawPtr<FontSelector>, LayoutStyle&);
 
     bool fontDirty() const { return m_flags; }
 
     static FontDescription::FamilyDescription initialFamilyDescription() { return FontDescription::FamilyDescription(initialGenericFamily()); }
     static FontFeatureSettings* initialFeatureSettings() { return nullptr; }
     static FontDescription::GenericFamilyType initialGenericFamily() { return FontDescription::StandardFamily; }
     static FontDescription::Size initialSize() { return FontDescription::Size(FontSize::initialKeywordSize(), 0.0f, false); }
+    static float initialSizeAdjust() { return 0; }
     static TextRenderingMode initialTextRendering() { return AutoTextRendering; }
     static FontVariant initialVariant() { return FontVariantNormal; }
     static FontDescription::VariantLigatures initialVariantLigatures() { return FontDescription::VariantLigatures(); }
     static FontStyle initialStyle() { return FontStyleNormal; }
     static FontDescription::Kerning initialKerning() { return FontDescription::AutoKerning; }
     static FontSmoothingMode initialFontSmoothing() { return AutoSmoothing; }
     static FontStretch initialStretch() { return FontStretchNormal; }
     static FontWeight initialWeight() { return FontWeightNormal; }
 
 private:
 
     void setFamilyDescription(FontDescription&, const FontDescription::FamilyDescription&);
     void setSize(FontDescription&, const FontDescription::Size&);
     void updateOrientation(FontDescription&, const LayoutStyle&);
     // This function fixes up the default font size if it detects that the current generic font family has changed. -dwh
     void checkForGenericFamilyChange(const FontDescription&, FontDescription&);
     void updateSpecifiedSize(FontDescription&, const LayoutStyle&);
     void updateComputedSize(FontDescription&, const LayoutStyle&);
+    void updateAdjustedSize(FontDescription&, const LayoutStyle&, FontSelector*);
 
     float getComputedSizeFromSpecifiedSize(FontDescription&, float effectiveZoom, float specifiedSize);
 
     const Document& m_document;
     FontDescription m_fontDescription;
 
     enum class PropertySetFlag {
         Weight,
         Size,
         Stretch,
         Family,
         FeatureSettings,
         Script,
         Style,
+        SizeAdjust,
         Variant,
         VariantLigatures,
         TextRendering,
         Kerning,
         FontSmoothing,
 
         EffectiveZoom,
         TextOrientation,
         WritingMode
     };
 
     void set(PropertySetFlag flag) { m_flags |= (1 << unsigned(flag)); }
     bool isSet(PropertySetFlag flag) const { return m_flags & (1 << unsigned(flag)); }
 
     unsigned m_flags;
 };
 
 }
 
 #endif