Explicitly set text direction for TextRuns

Source/core/rendering/RenderText.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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 64 matching lines @@
     const LChar* characters8() const { return m_text.impl()->characters8(); }
     const UChar* characters16() const { return m_text.impl()->characters16(); }
     bool hasEmptyText() const { return m_text.isEmpty(); }
     String substring(unsigned position, unsigned length) const { return m_text.substring(position, length); }
     UChar characterAt(unsigned) const;
     UChar uncheckedCharacterAt(unsigned) const;
     UChar operator[](unsigned i) const { return uncheckedCharacterAt(i); }
     unsigned textLength() const { return m_text.length(); } // non virtual implementation of length()
     void positionLineBox(InlineBox*);
 
-    virtual float width(unsigned from, unsigned len, const Font&, float xPos, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const;
-    virtual float width(unsigned from, unsigned len, float xPos, bool firstLine = false, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const;
+    virtual float width(unsigned from, unsigned len, const Font&, float xPos, TextDirection, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const;
+    virtual float width(unsigned from, unsigned len, float xPos, TextDirection, bool firstLine = false, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const;
 
     float minLogicalWidth() const;
     float maxLogicalWidth() const;
 
     void trimmedPrefWidths(float leadWidth,
         float& firstLineMinWidth, bool& hasBreakableStart,
         float& lastLineMinWidth, bool& hasBreakableEnd,
         bool& hasBreakableChar, bool& hasBreak,
         float& firstLineMaxWidth, float& lastLineMaxWidth,
         float& minWidth, float& maxWidth, bool& stripFrontSpaces);
@@ skipping 57 matching lines @@
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
 
     virtual void setTextInternal(PassRefPtr<StringImpl>);
     virtual UChar previousCharacter() const;
 
     virtual void addLayerHitTestRects(LayerHitTestRects&, const RenderLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const OVERRIDE;
 
     virtual InlineTextBox* createTextBox(); // Subclassed by SVG.
 
 private:
-    void computePreferredLogicalWidths(float leadWidth, HashSet<const SimpleFontData*>& fallbackFonts, GlyphOverflow&);
+    void computePreferredLogicalWidths(float leadWidth, TextDirection, HashSet<const SimpleFontData*>& fallbackFonts, GlyphOverflow&);
 
     bool computeCanUseSimpleFontCodePath() const;
 
     // Make length() private so that callers that have a RenderText*
     // will use the more efficient textLength() instead, while
     // callers with a RenderObject* can continue to use length().
     virtual unsigned length() const OVERRIDE FINAL { return textLength(); }
 
     virtual void paint(PaintInfo&, const LayoutPoint&) OVERRIDE FINAL { ASSERT_NOT_REACHED(); }
     virtual void layout() OVERRIDE FINAL { ASSERT_NOT_REACHED(); }
     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction) OVERRIDE FINAL { ASSERT_NOT_REACHED(); return false; }
 
     void deleteTextBoxes();
     bool containsOnlyWhitespace(unsigned from, unsigned len) const;
-    float widthFromCache(const Font&, int start, int len, float xPos, HashSet<const SimpleFontData*>* fallbackFonts, GlyphOverflow*) const;
+    float widthFromCache(const Font&, int start, int len, float xPos, TextDirection, HashSet<const SimpleFontData*>* fallbackFonts, GlyphOverflow*) const;
     bool isAllASCII() const { return m_isAllASCII; }
 
     void secureText(UChar mask);
 
     // We put the bitfield first to minimize padding on 64-bit.
     bool m_hasBreakableChar : 1; // Whether or not we can be broken into multiple lines.
     bool m_hasBreak : 1; // Whether or not we have a hard break (e.g., <pre> with '\n').
     bool m_hasTab : 1; // Whether or not we have a variable width tab character (e.g., <pre> with '\t').
     bool m_hasBreakableStart : 1;
     bool m_hasBreakableEnd : 1;
@@ skipping 38 matching lines @@
 inline void RenderText::checkConsistency() const
 {
 }
 #endif
 
 void applyTextTransform(const RenderStyle*, String&, UChar);
 
 } // namespace WebCore
 
 #endif // RenderText_h