Support includePartialGlyphs=false in Font::offsetForPositionForComplexText

third_party/WebKit/Source/platform/fonts/shaping/ShapeResultBuffer.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/fonts/shaping/ShapeResultBuffer.h"
 
 #include "platform/fonts/CharacterRange.h"
 #include "platform/fonts/GlyphBuffer.h"
 #include "platform/fonts/SimpleFontData.h"
 #include "platform/fonts/shaping/ShapeResultInlineHeaders.h"
@@ skipping 361 matching lines @@
             unsigned runIndex = direction == RTL ? runCount - 1 - index : index;
             addRunInfoRanges(*result->m_runs[runIndex], currentX, ranges);
             currentX += result->m_runs[runIndex]->m_width;
         }
         if (direction == RTL)
             currentX -= result->width();
     }
     return ranges;
 }
 
-int ShapeResultBuffer::offsetForPosition(const TextRun& run, float targetX) const
+int ShapeResultBuffer::offsetForPosition(const TextRun& run, float targetX, bool includePartialGlyphs) const
 {
     unsigned totalOffset;
     if (run.rtl()) {
         totalOffset = run.length();
         for (unsigned i = m_results.size(); i; --i) {
             const RefPtr<const ShapeResult>& wordResult = m_results[i - 1];
             if (!wordResult)
                 continue;
             totalOffset -= wordResult->numCharacters();
             if (targetX >= 0 && targetX <= wordResult->width()) {
-                int offsetForWord = wordResult->offsetForPosition(targetX);
+                int offsetForWord = wordResult->offsetForPosition(targetX, includePartialGlyphs);
                 return totalOffset + offsetForWord;
             }
             targetX -= wordResult->width();
         }
     } else {
         totalOffset = 0;
         for (const auto& wordResult : m_results) {
             if (!wordResult)
                 continue;
-            int offsetForWord = wordResult->offsetForPosition(targetX);
+            int offsetForWord = wordResult->offsetForPosition(targetX, includePartialGlyphs);
             ASSERT(offsetForWord >= 0);
             totalOffset += offsetForWord;
             if (targetX >= 0 && targetX <= wordResult->width())
                 return totalOffset;
             targetX -= wordResult->width();
         }
     }
     return totalOffset;
 }
 
 } // namespace blink