Rendering text-justify:distribute for 8 bit characters.

Source/platform/fonts/Character.cpp

Index: Source/platform/fonts/Character.cpp
diff --git a/Source/platform/fonts/Character.cpp b/Source/platform/fonts/Character.cpp
index dec8b4d2728d522557ba00831ed7228dcce4429f..b66c828674ec5a09311f656a474fa4fdce487fdb 100644
--- a/Source/platform/fonts/Character.cpp
+++ b/Source/platform/fonts/Character.cpp
@@ -261,32 +261,40 @@ bool Character::isCJKIdeographOrSymbol(UChar32 c)
     return valueInIntervalList(cjkSymbolRanges, c);
 }
 
-unsigned Character::expansionOpportunityCount(const LChar* characters, size_t length, TextDirection direction, bool& isAfterExpansion)
+unsigned Character::expansionOpportunityCount(const LChar* characters, size_t length, TextDirection direction, bool& isAfterExpansion, const ETextJustify textJustify)
 {
     unsigned count = 0;
-    if (direction == LTR) {
-        for (size_t i = 0; i < length; ++i) {
-            if (treatAsSpace(characters[i])) {
-                count++;
-                isAfterExpansion = true;
-            } else {
-                isAfterExpansion = false;
-            }
-        }
+    if (textJustify == JustifyDistribute) {
+        count = length - 1;
     } else {
-        for (size_t i = length; i > 0; --i) {
-            if (treatAsSpace(characters[i - 1])) {
-                count++;
-                isAfterExpansion = true;
-            } else {
-                isAfterExpansion = false;
+        if (direction == LTR) {
+            for (size_t i = 0; i < length; ++i) {
+                if (treatAsSpace(characters[i]))
+                    count++;
+            }
+        } else {
+            for (size_t i = length; i > 0; --i) {
+                if (treatAsSpace(characters[i - 1]))
+                    count++;
             }
         }
     }
+    if (direction == LTR) {
+        if (treatAsSpace(characters[length - 1]))

[leviw_travelin_and_unemployed, 2014/08/18 17:55:43]

int lastCharacter = (direction == ltr) ? length - 1 : 0
isAfterExpansion = treatAsSpace(characters[lastCharacter);

[dw.im, 2014/08/21 00:20:55]

Cool!

+            isAfterExpansion = true;
+        else
+            isAfterExpansion = false;
+    } else {
+        if (treatAsSpace(characters[0]))
+            isAfterExpansion = true;
+        else
+            isAfterExpansion = false;
+    }
+
     return count;
 }
 
-unsigned Character::expansionOpportunityCount(const UChar* characters, size_t length, TextDirection direction, bool& isAfterExpansion)
+unsigned Character::expansionOpportunityCount(const UChar* characters, size_t length, TextDirection direction, bool& isAfterExpansion, const ETextJustify textJustify)
 {
     static bool expandAroundIdeographs = FontPlatformFeatures::canExpandAroundIdeographsInComplexText();
     unsigned count = 0;