Rendering text-justify:distribute for 8 bit characters.

Source/platform/fonts/Character.h

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 30 matching lines @@
 namespace WebCore {
 
 class PLATFORM_EXPORT Character {
 public:
     static CodePath characterRangeCodePath(const LChar*, unsigned) { return SimplePath; }
     static CodePath characterRangeCodePath(const UChar*, unsigned len);
 
     static bool isCJKIdeograph(UChar32);
     static bool isCJKIdeographOrSymbol(UChar32);
 
-    static unsigned expansionOpportunityCount(const LChar*, size_t length, TextDirection, bool& isAfterExpansion);
-    static unsigned expansionOpportunityCount(const UChar*, size_t length, TextDirection, bool& isAfterExpansion);
+    static unsigned expansionOpportunityCount(const LChar*, size_t length, TextDirection, bool& isAfterExpansion, const bool distributeJustification);
+    static unsigned expansionOpportunityCount(const UChar*, size_t length, TextDirection, bool& isAfterExpansion, const bool distributeJustification);

[leviw_travelin_and_unemployed, 2014/07/28 23:59:58]

Can we use an enum instead of an extra bool? :-/

[dw.im, 2014/07/29 01:54:54]

I guess so. And, using enum also can give chance to enhance when we have more
values of text-justify.
I will try to do it.

 
     static bool treatAsSpace(UChar c) { return c == ' ' || c == '\t' || c == '\n' || c == noBreakSpace; }
     static bool treatAsZeroWidthSpace(UChar c) { return treatAsZeroWidthSpaceInComplexScript(c) || c == 0x200c || c == 0x200d; }
     static bool treatAsZeroWidthSpaceInComplexScript(UChar c) { return c < 0x20 || (c >= 0x7F && c < 0xA0) || c == softHyphen || c == zeroWidthSpace || (c >= 0x200e && c <= 0x200f) || (c >= 0x202a && c <= 0x202e) || c == zeroWidthNoBreakSpace || c == objectReplacementCharacter; }
     static bool canReceiveTextEmphasis(UChar32);
 
     static inline UChar normalizeSpaces(UChar character)
     {
         if (treatAsSpace(character))
             return space;
@@ skipping 14 matching lines @@
 
 private:
     Character();
 
     static const uint8_t s_roundingHackCharacterTable[256];
 };
 
 }
 
 #endif