Apply text indent if the text direction matches the text alignment

third_party/WebKit/Source/core/layout/LayoutBlockFlowLine.cpp

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved.
  * Copyright (C) 2010 Google 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 2042 matching lines @@
     // Just update the line info's pagination strut without altering our logical height yet. If the line ends up containing
     // no content, then we don't want to improperly grow the height of the block.
     lineInfo.setFloatPaginationStrut(lineInfo.floatPaginationStrut() + paginationStrut);
     return true;
 }
 
 LayoutUnit LayoutBlockFlow::startAlignedOffsetForLine(LayoutUnit position, IndentTextOrNot indentText)
 {
     ETextAlign textAlign = style()->textAlign();
 
-    if (textAlign == TASTART) // FIXME: Handle TAEND here
+    bool applyIndentText;
+    switch (textAlign) { // FIXME: Handle TAEND here
+    case LEFT:
+    case WEBKIT_LEFT:
+        applyIndentText = style()->isLeftToRightDirection();
+        break;
+    case RIGHT:
+    case WEBKIT_RIGHT:
+        applyIndentText = !style()->isLeftToRightDirection();
+        break;
+    case TASTART:
+        applyIndentText = true;
+        break;
+    default:
+        applyIndentText = false;
+    }
+
+    if (applyIndentText)
         return startOffsetForLine(position, indentText);
 
     // updateLogicalWidthForAlignment() handles the direction of the block so no need to consider it here
     LayoutUnit totalLogicalWidth;
     LayoutUnit logicalLeft = logicalLeftOffsetForLine(logicalHeight(), DoNotIndentText);
     LayoutUnit availableLogicalWidth = logicalRightOffsetForLine(logicalHeight(), DoNotIndentText) - logicalLeft;
     updateLogicalWidthForAlignment(textAlign, 0, 0, logicalLeft, totalLogicalWidth, availableLogicalWidth, 0);
 
     if (!style()->isLeftToRightDirection())
         return logicalWidth() - logicalLeft;
@@ skipping 16 matching lines @@
     if (!line || !line->isFirstLineStyle())
         return reason;
     // It's the RootInlineBox that paints the ::first-line background. Note that since it may be
     // expensive to figure out if the first line is affected by any ::first-line selectors at all,
     // we just invalidate it unconditionally, since that's typically cheaper.
     invalidateDisplayItemClient(*line);
     return reason;
 }
 
 }