Support subpixel values for text-shadow and box-shadow

Source/core/css/resolver/StyleBuilderCustom.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
@@ skipping 908 matching lines @@
         ASSERT(toCSSPrimitiveValue(value)->getValueID() == CSSValueNone);
         return PassRefPtr<ShadowList>();
     }
 
     const CSSValueList* valueList = toCSSValueList(value);
     size_t shadowCount = valueList->length();
     float zoom = state.style()->effectiveZoom();
     ShadowDataVector shadows;
     for (size_t i = 0; i < shadowCount; ++i) {
         const CSSShadowValue* item = toCSSShadowValue(valueList->item(i));
-        int x = item->x->computeLength<int>(state.style(), state.rootElementStyle(), zoom);
-        int y = item->y->computeLength<int>(state.style(), state.rootElementStyle(), zoom);
-        int blur = item->blur ? item->blur->computeLength<int>(state.style(), state.rootElementStyle(), zoom) : 0;
-        int spread = item->spread ? item->spread->computeLength<int>(state.style(), state.rootElementStyle(), zoom) : 0;
+        LayoutUnit x = item->x->computeLength<float>(state.style(), state.rootElementStyle(), zoom);
+        LayoutUnit y = item->y->computeLength<float>(state.style(), state.rootElementStyle(), zoom);
+        LayoutUnit blur = item->blur ? item->blur->computeLength<float>(state.style(), state.rootElementStyle(), zoom) : 0;
+        LayoutUnit spread = item->spread ? item->spread->computeLength<float>(state.style(), state.rootElementStyle(), zoom) : 0;
         ShadowStyle shadowStyle = item->style && item->style->getValueID() == CSSValueInset ? Inset : Normal;
         Color color;
         if (item->color)
             color = state.document().textLinkColors().colorFromPrimitiveValue(item->color.get(), state.style()->visitedDependentColor(CSSPropertyColor));
         else
             color = state.style()->color();
 
         if (!color.isValid())
             color = Color::transparent;
-        shadows.append(ShadowData(IntPoint(x, y), blur, spread, shadowStyle, color));
+        shadows.append(ShadowData(LayoutPoint(x, y), blur, spread, shadowStyle, color));
     }
     return ShadowList::adopt(shadows);
 }
 
 float StyleBuilderConverter::convertSpacing(StyleResolverState& state, CSSValue* value)
 {
     CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
     if (primitiveValue->getValueID() == CSSValueNormal)
         return 0;
     float zoom = state.useSVGZoomRules() ? 1.0f : state.style()->effectiveZoom();
@@ skipping 1354 matching lines @@
         break;
     }
     case CSSPropertyEnableBackground:
         // Silently ignoring this property for now
         // http://bugs.webkit.org/show_bug.cgi?id=6022
         break;
     }
 }
 
 } // namespace WebCore