1/*
2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. AND ITS CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC.
20 * OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef PageOverlay_h
30#define PageOverlay_h
31
32#include "wtf/OwnPtr.h"
33#include "wtf/PassOwnPtr.h"
34
35namespace blink {
36
37class GraphicsContext;
38class GraphicsLayer;
39class GraphicsLayerClient;
40class OverlayGraphicsLayerClientImpl;
41class WebPageOverlay;
42class WebViewImpl;
43struct WebRect;
44
45class PageOverlay {
46public:
47    static PassOwnPtr<PageOverlay> create(WebViewImpl*, WebPageOverlay*);
48
49    ~PageOverlay() { }
50
51    WebPageOverlay* overlay() const { return m_overlay; }
52    void setOverlay(WebPageOverlay* overlay) { m_overlay = overlay; }
53
54    int zOrder() const { return m_zOrder; }
55    void setZOrder(int zOrder) { m_zOrder = zOrder; }
56
57    void clear();
58    void update();
59    void paintWebFrame(GraphicsContext&);
60
61    GraphicsLayer* graphicsLayer() const { return m_layer.get(); }
62
63private:
64    PageOverlay(WebViewImpl*, WebPageOverlay*);
65    void invalidateWebFrame();
66
67    WebViewImpl* m_viewImpl;
68    WebPageOverlay* m_overlay;
69    OwnPtr<GraphicsLayerClient> m_layerClient;
70    OwnPtr<GraphicsLayer> m_layer;
71    int m_zOrder;
72};
73
74} // namespace blink
75
76#endif // PageOverlay_h
77