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 WebCore {
36class GraphicsContext;
37class GraphicsLayer;
38class GraphicsLayerClient;
39}
40
41namespace WebKit {
42class WebPageOverlay;
43class WebViewImpl;
44struct WebRect;
45
46class PageOverlay {
47public:
48    static PassOwnPtr<PageOverlay> create(WebViewImpl*, WebPageOverlay*);
49
50    ~PageOverlay() { }
51
52    WebPageOverlay* overlay() const { return m_overlay; }
53    void setOverlay(WebPageOverlay* overlay) { m_overlay = overlay; }
54
55    int zOrder() const { return m_zOrder; }
56    void setZOrder(int zOrder) { m_zOrder = zOrder; }
57
58    void clear();
59    void update();
60    void paintWebFrame(WebCore::GraphicsContext&);
61
62    WebCore::GraphicsLayer* graphicsLayer() const { return m_layer.get(); }
63
64private:
65    PageOverlay(WebViewImpl*, WebPageOverlay*);
66    void invalidateWebFrame();
67
68    WebViewImpl* m_viewImpl;
69    WebPageOverlay* m_overlay;
70    OwnPtr<WebCore::GraphicsLayerClient> m_layerClient;
71    OwnPtr<WebCore::GraphicsLayer> m_layer;
72    int m_zOrder;
73};
74
75} // namespace WebKit
76
77#endif // PageOverlay_h
78