Allow fractional letter- word-spacing values.

Source/core/rendering/style/RenderStyle.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Adobe Systems Incorporated. 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 1135 matching lines @@
     return 0;
 }
 
 const Font& RenderStyle::font() const { return inherited->font; }
 const FontMetrics& RenderStyle::fontMetrics() const { return inherited->font.fontMetrics(); }
 const FontDescription& RenderStyle::fontDescription() const { return inherited->font.fontDescription(); }
 float RenderStyle::specifiedFontSize() const { return fontDescription().specifiedSize(); }
 float RenderStyle::computedFontSize() const { return fontDescription().computedSize(); }
 int RenderStyle::fontSize() const { return inherited->font.pixelSize(); }
 
-int RenderStyle::wordSpacing() const { return inherited->font.wordSpacing(); }
-int RenderStyle::letterSpacing() const { return inherited->font.letterSpacing(); }
+float RenderStyle::wordSpacing() const { return inherited->font.wordSpacing(); }
+float RenderStyle::letterSpacing() const { return inherited->font.letterSpacing(); }
 
 bool RenderStyle::setFontDescription(const FontDescription& v)
 {
     if (inherited->font.fontDescription() != v) {
         inherited.access()->font = Font(v, inherited->font.letterSpacing(), inherited->font.wordSpacing());
         return true;
     }
     return false;
 }
 
@@ skipping 23 matching lines @@
 
     if (lh.isPercent())
         return minimumValueForLength(lh, fontSize());
 
     if (lh.isViewportPercentage())
         return valueForLength(lh, 0, renderView);
 
     return lh.value();
 }
 
-void RenderStyle::setWordSpacing(int v) { inherited.access()->font.setWordSpacing(v); }
-void RenderStyle::setLetterSpacing(int v) { inherited.access()->font.setLetterSpacing(v); }
+void RenderStyle::setWordSpacing(float v) { inherited.access()->font.setWordSpacing(v); }
+void RenderStyle::setLetterSpacing(float v) { inherited.access()->font.setLetterSpacing(v); }
 
 void RenderStyle::setFontSize(float size)
 {
     // size must be specifiedSize if Text Autosizing is enabled, but computedSize if text
     // zoom is enabled (if neither is enabled it's irrelevant as they're probably the same).
 
     ASSERT(std::isfinite(size));
     if (!std::isfinite(size) || size < 0)
         size = 0;
     else
@@ skipping 359 matching lines @@
     info.addMember(rareInheritedData, "rareInheritedData");
     // FIXME: inherited contains StyleImage and Font fields that might need to be instrumented.
     info.addMember(inherited, "inherited");
     info.addMember(m_cachedPseudoStyles, "cachedPseudoStyles");
     info.addMember(m_svgStyle, "svgStyle");
     info.addMember(inherited_flags, "inherited_flags");
     info.addMember(noninherited_flags, "noninherited_flags");
 }
 
 } // namespace WebCore