Rendering text-justify:distribute for 8 bit characters.

Source/core/platform/graphics/Font.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2010, 2011 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.
@@ skipping 583 matching lines @@
         (UChar32*)cjkSymbolRanges, cjkSymbolRangesCount, c, keyExtractorUChar32);
     // Exact matches are CJK Symbols
     if (*boundingCharacter == c)
         return true;
     bool isEndOfRange = ((boundingCharacter - cjkSymbolRanges) % 2);
     if (*boundingCharacter < c)
         return !isEndOfRange;
     return isEndOfRange;
 }
 
-unsigned Font::expansionOpportunityCount(const LChar* characters, size_t length, TextDirection direction, bool& isAfterExpansion)
+unsigned Font::expansionOpportunityCount(const LChar* characters, size_t length, TextDirection direction, bool& isAfterExpansion, bool distributeJustification)
 {
     unsigned count = 0;
     if (direction == LTR) {
         for (size_t i = 0; i < length; ++i) {
-            if (treatAsSpace(characters[i])) {
+            if (treatAsSpace(characters[i]) || distributeJustification)
                 count++;
-                isAfterExpansion = true;
-            } else
-                isAfterExpansion = false;
         }
+        if (treatAsSpace(characters[length - 1]))
+            isAfterExpansion = true;
+        else
+            isAfterExpansion = false;
     } else {
         for (size_t i = length; i > 0; --i) {
-            if (treatAsSpace(characters[i - 1])) {
+            if (treatAsSpace(characters[i - 1]) || distributeJustification)
                 count++;
-                isAfterExpansion = true;
-            } else
-                isAfterExpansion = false;
         }
+        if (treatAsSpace(characters[0]))
+            isAfterExpansion = true;
+        else
+            isAfterExpansion = false;
     }
     return count;
 }
 
-unsigned Font::expansionOpportunityCount(const UChar* characters, size_t length, TextDirection direction, bool& isAfterExpansion)
+unsigned Font::expansionOpportunityCount(const UChar* characters, size_t length, TextDirection direction, bool& isAfterExpansion, bool distributeJustification)
 {
     static bool expandAroundIdeographs = canExpandAroundIdeographsInComplexText();
     unsigned count = 0;
     if (direction == LTR) {
         for (size_t i = 0; i < length; ++i) {
             UChar32 character = characters[i];
             if (treatAsSpace(character)) {
                 count++;
                 isAfterExpansion = true;
                 continue;
@@ skipping 51 matching lines @@
 }
 
 void Font::willUseFontData() const
 {
     const FontFamily& family = fontDescription().family();
     if (m_fontFallbackList && m_fontFallbackList->fontSelector() && !family.familyIsEmpty())
         m_fontFallbackList->fontSelector()->willUseFontData(fontDescription(), family.family());
 }
 
 }