Support subpixel values for text-shadow and box-shadow

Source/core/rendering/style/ShadowData.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 33 matching lines @@
         || (m_next && o.m_next && *m_next != *o.m_next))
         return false;
 
     return m_location == o.m_location
         && m_blur == o.m_blur
         && m_spread == o.m_spread
         && m_style == o.m_style
         && m_color == o.m_color;
 }
 
-static inline void calculateShadowExtent(const ShadowData* shadow, int additionalOutlineSize, int& shadowLeft, int& shadowRight, int& shadowTop, int& shadowBottom)
+static inline void calculateShadowExtent(const ShadowData* shadow, LayoutUnit additionalOutlineSize, LayoutUnit& shadowLeft, LayoutUnit& shadowRight, LayoutUnit& shadowTop, LayoutUnit& shadowBottom)
 {
     do {
-        int blurAndSpread = shadow->blur() + shadow->spread() + additionalOutlineSize;
+        LayoutUnit blurAndSpread = shadow->blur() + shadow->spread() + additionalOutlineSize;
         if (shadow->style() == Normal) {
             shadowLeft = min(shadow->x() - blurAndSpread, shadowLeft);
             shadowRight = max(shadow->x() + blurAndSpread, shadowRight);
             shadowTop = min(shadow->y() - blurAndSpread, shadowTop);
             shadowBottom = max(shadow->y() + blurAndSpread, shadowBottom);
         }
 
         shadow = shadow->next();
     } while (shadow);
 }
 
-void ShadowData::adjustRectForShadow(LayoutRect& rect, int additionalOutlineSize) const
+void ShadowData::adjustRectForShadow(LayoutRect& rect, LayoutUnit additionalOutlineSize) const
 {
-    int shadowLeft = 0;
-    int shadowRight = 0;
-    int shadowTop = 0;
-    int shadowBottom = 0;
+    LayoutUnit shadowLeft = 0;
+    LayoutUnit shadowRight = 0;
+    LayoutUnit shadowTop = 0;
+    LayoutUnit shadowBottom = 0;
     calculateShadowExtent(this, additionalOutlineSize, shadowLeft, shadowRight, shadowTop, shadowBottom);
 
     rect.move(shadowLeft, shadowTop);
     rect.setWidth(rect.width() - shadowLeft + shadowRight);
     rect.setHeight(rect.height() - shadowTop + shadowBottom);
 }
 
-void ShadowData::adjustRectForShadow(FloatRect& rect, int additionalOutlineSize) const
+void ShadowData::adjustRectForShadow(FloatRect& rect, LayoutUnit additionalOutlineSize) const
 {
-    int shadowLeft = 0;
-    int shadowRight = 0;
-    int shadowTop = 0;
-    int shadowBottom = 0;
+    LayoutUnit shadowLeft = 0;
+    LayoutUnit shadowRight = 0;
+    LayoutUnit shadowTop = 0;
+    LayoutUnit shadowBottom = 0;
     calculateShadowExtent(this, additionalOutlineSize, shadowLeft, shadowRight, shadowTop, shadowBottom);
 
     rect.move(shadowLeft, shadowTop);
     rect.setWidth(rect.width() - shadowLeft + shadowRight);
     rect.setHeight(rect.height() - shadowTop + shadowBottom);
 }
 
 } // namespace WebCore