1/*
2 * Copyright (C) 2009, 2010 Apple Inc. All rights reserved.
3 * Copyright (C) 2014 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef GraphicsLayerTreeBuilder_h
28#define GraphicsLayerTreeBuilder_h
29
30#include "platform/graphics/GraphicsLayer.h"
31
32namespace blink {
33
34class RenderLayer;
35
36class GraphicsLayerTreeBuilder {
37public:
38    GraphicsLayerTreeBuilder();
39    ~GraphicsLayerTreeBuilder();
40
41    struct AncestorInfo {
42        AncestorInfo()
43            : enclosingCompositedLayer(0)
44            , childLayersOfEnclosingCompositedLayer(0)
45        {
46        }
47
48        RenderLayer* enclosingCompositedLayer;
49        GraphicsLayerVector* childLayersOfEnclosingCompositedLayer;
50    };
51
52    void rebuild(RenderLayer&, AncestorInfo);
53};
54
55} // namespace blink
56
57#endif // GraphicsLayerTreeBuilder_h
58