Fix line wrappiing when break-word/break-all and float with 100% width

third_party/WebKit/Source/core/layout/line/BreakingContextInlineHeaders.h

 /*
  * 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.
  * Copyright (C) 2013 Adobe Systems Incorporated.
  *
  * 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 763 matching lines @@
             lastSpaceWordSpacing = 0;
             wordSpacingForWordMeasurement = 0;
             stoppedIgnoringSpaces = true;
             stopIgnoringSpaces(lastSpace);
         }
 
         // Update our tally of the width since the last breakable position with the width of the word we're now at the end of.
         float lastWidthMeasurement;
         WordMeasurement& wordMeasurement = calculateWordWidth(wordMeasurements, layoutText, lastSpace, lastWidthMeasurement, wordSpacingForWordMeasurement, font, wordTrailingSpaceWidth, c);
         lastWidthMeasurement += lastSpaceWordSpacing;
-
-        midWordBreak = false;
-        if (canBreakMidWord && !m_width.fitsOnLine(lastWidthMeasurement)
-            && rewindToMidWordBreak(layoutText, style, font, breakAll, wordMeasurement)) {
-            lastWidthMeasurement = wordMeasurement.width;
-            midWordBreak = true;
-        }
-
         m_width.addUncommittedWidth(lastWidthMeasurement);
 
         // We keep track of the total width contributed by trailing space as we often want to exclude it when determining
         // if a run fits on a line.
         if (m_collapseWhiteSpace && previousCharacterIsSpace && m_currentCharacterIsSpace && lastWidthMeasurement)
             m_width.setTrailingWhitespaceWidth(lastWidthMeasurement);
 
         // If this is the end of the first word in run of text then make sure we apply the width from any leading inlines.
         // For example: '<span style="margin-left: 5px;"><span style="margin-left: 10px;">FirstWord</span></span>' would
         // apply a width of 15px from the two span ancestors.
         if (!m_appliedStartWidth) {
             m_width.addUncommittedWidth(inlineLogicalWidthFromAncestorsIfNeeded(m_current.getLineLayoutItem(), true, false).toFloat());
             m_appliedStartWidth = true;
         }
 
         // If we haven't hit a breakable position yet and already don't fit on the line try to move below any floats.
         if (!m_width.committedWidth() && m_autoWrap && !m_width.fitsOnLine() && !widthMeasurementAtLastBreakOpportunity)
             m_width.fitBelowFloats(m_lineInfo.isFirstLine());
 
+        midWordBreak = false;
+        if (canBreakMidWord && !m_width.fitsOnLine()) {
+            m_width.addUncommittedWidth(-wordMeasurement.width);
+            if (rewindToMidWordBreak(layoutText, style, font, breakAll, wordMeasurement)) {
+                lastWidthMeasurement = wordMeasurement.width + lastSpaceWordSpacing;
+                midWordBreak = true;
+            }
+            m_width.addUncommittedWidth(wordMeasurement.width);
+        }
+
         // If there is a soft-break available at this whitespace position then take it.
         applyWordSpacing = wordSpacing && m_currentCharacterIsSpace;
         if (canBreakAtWhitespace(breakWords, wordMeasurement, stoppedIgnoringSpaces, hyphenated, charWidth, hyphenWidth, betweenWords, midWordBreak, canBreakMidWord, previousCharacterIsSpace, lastWidthMeasurement, layoutText, font, applyWordSpacing, wordSpacing))
             return false;
 
         // If there is a hard-break available at this whitespace position then take it.
         if (c == newlineCharacter && m_preservesNewline) {
             if (!stoppedIgnoringSpaces && m_current.offset())
                 m_lineMidpointState.ensureCharacterGetsLineBox(m_current);
             m_lineBreak.moveTo(m_current.getLineLayoutItem(), m_current.offset(), m_current.nextBreakablePosition());
@@ skipping 272 matching lines @@
 
     if (style.getTextIndentType() == TextIndentHanging)
         indentText = indentText == IndentText ? DoNotIndentText : IndentText;
 
     return indentText;
 }
 
 } // namespace blink
 
 #endif // BreakingContextInlineHeaders_h