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..fd94c299ee22761a6fa0dbde7eefb720e6d508f7 100644
--- a/Source/platform/text/TextRun.h
+++ b/Source/platform/text/TextRun.h
@@ -42,6 +42,15 @@ class SimpleFontData;
 struct GlyphData;
 struct WidthIterator;
 
+enum ETextJustifyFlags {
+    JustifyAuto = 0x00,

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

You don't need 2 digits after the x. 0x1, 0x2, etc.

These aren't exactly flags, either. Can we move TextJustify to platform instead
of doubling it here?

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

I'm not sure we can move it. will try to look into it.

+    JustifyNone = 0x01,
+    JustifyInterWord = 0x02,
+    JustifyDistribute = 0x03
+};
+
+typedef unsigned ETextJustify;
+
 class PLATFORM_EXPORT TextRun {
     WTF_MAKE_FAST_ALLOCATED;
 public:
@@ -67,6 +76,7 @@ public:
         , m_directionalOverride(directionalOverride)
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_disableSpacing(false)
+        , m_textJustify(JustifyAuto)
         , m_tabSize(0)
     {
         m_data.characters8 = c;
@@ -85,6 +95,7 @@ public:
         , m_directionalOverride(directionalOverride)
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_disableSpacing(false)
+        , m_textJustify(JustifyAuto)
         , m_tabSize(0)
     {
         m_data.characters16 = c;
@@ -102,6 +113,7 @@ public:
         , m_directionalOverride(directionalOverride)
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_disableSpacing(false)
+        , m_textJustify(JustifyAuto)
         , m_tabSize(0)
     {
         if (!m_charactersLength) {
@@ -128,6 +140,7 @@ public:
         , m_directionalOverride(directionalOverride)
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_disableSpacing(false)
+        , m_textJustify(JustifyAuto)
         , m_tabSize(0)
     {
         if (!m_charactersLength) {
@@ -196,6 +209,9 @@ 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() { }
@@ -230,6 +246,7 @@ private:
     unsigned m_directionalOverride : 1; // Was this direction set by an override character.
     unsigned m_characterScanForCodePath : 1;
     unsigned m_disableSpacing : 1;
+    unsigned m_textJustify : 2;
     unsigned m_tabSize;
     RefPtr<RenderingContext> m_renderingContext;
 };