Rendering text-justify:distribute for 8 bit characters.

Source/platform/text/TextRun.h

Index: Source/platform/text/TextRun.h
diff --git a/Source/platform/text/TextRun.h b/Source/platform/text/TextRun.h
index d5f6be43cf44bf269d5c09084f216684d87fb4bd..92d22f3f49b317cdbb884b8234d19504ede153a8 100644
--- a/Source/platform/text/TextRun.h
+++ b/Source/platform/text/TextRun.h
@@ -42,6 +42,13 @@ class SimpleFontData;
 struct GlyphData;
 struct WidthIterator;
 
+enum ETextJustify {
+    JustifyAuto = 0,
+    JustifyNone = 1,
+    JustifyInterWord = 2,
+    JustifyDistribute = 3
+};
+
 class PLATFORM_EXPORT TextRun {
     WTF_MAKE_FAST_ALLOCATED;
 public:
@@ -68,6 +75,7 @@ public:
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textJustify(JustifyAuto)
     {
         m_data.characters8 = c;
     }
@@ -86,6 +94,7 @@ public:
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textJustify(JustifyAuto)
     {
         m_data.characters16 = c;
     }
@@ -103,6 +112,7 @@ public:
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textJustify(JustifyAuto)
     {
         if (!m_charactersLength) {
             m_is8Bit = true;
@@ -129,6 +139,7 @@ public:
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textJustify(JustifyAuto)
     {
         if (!m_charactersLength) {
             m_is8Bit = true;
@@ -196,6 +207,9 @@ public:
     void setDirectionalOverride(bool override) { m_directionalOverride = override; }
     void setCharacterScanForCodePath(bool scan) { m_characterScanForCodePath = scan; }
 
+    void setTextJustify(ETextJustify textJustify) { m_textJustify = textJustify; }
+    ETextJustify textJustify() const { return m_textJustify; }
+
     class RenderingContext : public RefCounted<RenderingContext> {
     public:
         virtual ~RenderingContext() { }
@@ -232,6 +246,7 @@ private:
     unsigned m_disableSpacing : 1;
     unsigned m_tabSize;
     RefPtr<RenderingContext> m_renderingContext;
+    ETextJustify m_textJustify;

[leviw_travelin_and_unemployed, 2014/08/11 17:34:46]

You'll want to pack this into the bits above (there's plenty of room). You can
*store* it as an unsigned.

[dw.im, 2014/08/12 02:47:09]

Done.

 };
 
 inline void TextRun::setTabSize(bool allow, unsigned size)