third_party/WebKit/Source/platform/graphics/paint/DisplayItemClipTree.cpp

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6 #include "platform/graphics/paint/DisplayItemClipTree.h"
   7
   8 #include <limits>
   9
  10 namespace blink {
  11
  12 DisplayItemClipTree::DisplayItemClipTree()
  13 {
  14     // There is always a root node.
  15     // And it's always in the root transform space.
  16     float infinity = std::numeric_limits<float>::infinity();
  17     WebFloatRect infiniteRect(-infinity, -infinity, infinity, infinity);
  18     m_nodes.append(ClipNode(kInvalidIndex, 0 /* root transform node */, infiniteRect));
  19     ASSERT(m_nodes[0].isRoot());
  20 }
  21
  22 DisplayItemClipTree::~DisplayItemClipTree()
  23 {
  24 }
  25
  26 } // namespace blink