1/*
2 * Copyright (C) 2019 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "DisplayRefreshMonitorClient.h"
29#include <wtf/Seconds.h>
30
31namespace WebCore {
32
33class Page;
34class Timer;
35
36class RenderingUpdateScheduler
37#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
38 : public DisplayRefreshMonitorClient
39#endif
40{
41 WTF_MAKE_FAST_ALLOCATED;
42public:
43 static std::unique_ptr<RenderingUpdateScheduler> create(Page& page)
44 {
45 return std::make_unique<RenderingUpdateScheduler>(page);
46 }
47
48 RenderingUpdateScheduler(Page&);
49 void scheduleRenderingUpdate();
50 void scheduleCompositingLayerFlush();
51
52private:
53#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
54 RefPtr<DisplayRefreshMonitor> createDisplayRefreshMonitor(PlatformDisplayID) const final;
55 void windowScreenDidChange(PlatformDisplayID);
56 void displayRefreshFired() final;
57#else
58 void displayRefreshFired();
59#endif
60
61 bool isScheduled() const;
62 void startTimer(Seconds);
63 void clearScheduled();
64
65 Page& m_page;
66 bool m_scheduled { false };
67 std::unique_ptr<Timer> m_refreshTimer;
68};
69
70}
71