[CSS Shapes] Can't select content within the area of the floating box when clip-path is applied

Source/core/rendering/RenderBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. 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
@@ skipping 2748 matching lines @@
 
     if ((hitTestAction == HitTestBlockBackground || hitTestAction == HitTestChildBlockBackground)
         && visibleToHitTestRequest(request)
         && isPointInOverflowControl(result, locationInContainer.point(), adjustedLocation)) {
         updateHitTestResult(result, locationInContainer.point() - localOffset);
         // FIXME: isPointInOverflowControl() doesn't handle rect-based tests yet.
         if (!result.addNodeToRectBasedTestResult(nodeForHitTest(), request, locationInContainer))
            return true;
     }
 
+    if (style()->clipPath()) {
+        switch (style()->clipPath()->type()) {
+        case ClipPathOperation::SHAPE: {
+            ShapeClipPathOperation* clipPath = toShapeClipPathOperation(style()->clipPath());
+            // FIXME: handle marginBox etc.
+            if (!clipPath->path(borderBoxRect()).contains(locationInContainer.point() - localOffset, clipPath->windRule()))
+                return false;
+            break;
+        }
+        case ClipPathOperation::REFERENCE:
+            // FIXME: handle REFERENCE
+            break;
+        }
+    }
+
     // If we have clipping, then we can't have any spillout.
     bool useOverflowClip = hasOverflowClip() && !hasSelfPaintingLayer();
     bool useClip = (hasControlClip() || useOverflowClip);
     bool checkChildren = !useClip || (hasControlClip() ? locationInContainer.intersects(controlClipRect(adjustedLocation)) : locationInContainer.intersects(overflowClipRect(adjustedLocation, IncludeOverlayScrollbarSize)));
     if (checkChildren) {
         // Hit test descendants first.
         LayoutSize scrolledOffset(localOffset);
         if (hasOverflowClip())
             scrolledOffset -= scrolledContentOffset();
 
@@ skipping 2120 matching lines @@
 void RenderBlock::showLineTreeAndMark(const InlineBox* markedBox1, const char* markedLabel1, const InlineBox* markedBox2, const char* markedLabel2, const RenderObject* obj) const
 {
     showRenderObject();
     for (const RootInlineBox* root = firstRootBox(); root; root = root->nextRootBox())
         root->showLineTreeAndMark(markedBox1, markedLabel1, markedBox2, markedLabel2, obj, 1);
 }
 
 #endif
 
 } // namespace WebCore