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 1443 matching lines @@
             return id == CSSPropertyTextShadow ? state.style()->setTextShadow(nullptr) : state.style()->setBoxShadow(nullptr);
 
         if (!value->isValueList())
             return;
 
         for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
             CSSValue* currValue = i.value();
             if (!currValue->isShadowValue())
                 continue;
             ShadowValue* item = static_cast<ShadowValue*>(currValue);
-            int x = item->x->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor);
-            int y = item->y->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor);
-            int blur = item->blur ? item->blur->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor) : 0;
-            int spread = item->spread ? item->spread->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor) : 0;
+            LayoutUnit x = item->x->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor);
+            LayoutUnit y = item->y->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor);
+            LayoutUnit blur = item->blur ? item->blur->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor) : 0;
+            LayoutUnit spread = item->spread ? item->spread->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor) : 0;
             ShadowStyle shadowStyle = item->style && item->style->getValueID() == CSSValueInset ? Inset : Normal;
             StyleColor color;
             if (item->color)
                 color = state.document()->textLinkColors().colorFromPrimitiveValue(item->color.get());
             else if (state.style())
                 color = state.style()->color();
 
             if (!color.isValid())
                 color = Color::transparent;
-            OwnPtr<ShadowData> shadow = ShadowData::create(IntPoint(x, y), blur, spread, shadowStyle, color);
+            OwnPtr<ShadowData> shadow = ShadowData::create(LayoutPoint(x, y), blur, spread, shadowStyle, color);
             if (id == CSSPropertyTextShadow)
                 state.style()->setTextShadow(shadow.release(), i.index()); // add to the list if this is not the first entry
             else
                 state.style()->setBoxShadow(shadow.release(), i.index()); // add to the list if this is not the first entry
         }
         return;
     }
     case CSSPropertyWebkitBoxReflect: {
         HANDLE_INHERIT_AND_INITIAL(boxReflect, BoxReflect)
         if (primitiveValue) {
@@ skipping 849 matching lines @@
         break;
     }
     case CSSPropertyEnableBackground:
         // Silently ignoring this property for now
         // http://bugs.webkit.org/show_bug.cgi?id=6022
         break;
     }
 }
 
 } // namespace WebCore