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/*
* Copyright (C) 2019-2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "AnimationFrameRate.h"
#include "DisplayRefreshMonitorClient.h"
#include <wtf/Seconds.h>
namespace WebCore {
class Page;
class Timer;
class RenderingUpdateScheduler final : public DisplayRefreshMonitorClient {
WTF_MAKE_FAST_ALLOCATED;
public:
static std::unique_ptr<RenderingUpdateScheduler> create(Page& page)
{
return makeUnique<RenderingUpdateScheduler>(page);
}
RenderingUpdateScheduler(Page&);
void adjustRenderingUpdateFrequency();
void scheduleRenderingUpdate();
void windowScreenDidChange(PlatformDisplayID);
private:
bool scheduleAnimation();
void displayRefreshFired() final;
DisplayRefreshMonitorFactory* displayRefreshMonitorFactory() const final;
bool isScheduled() const;
void startTimer(Seconds);
void clearScheduled();
void triggerRenderingUpdate();
Page& m_page;
std::unique_ptr<Timer> m_refreshTimer;
unsigned m_rescheduledRenderingUpdateCount { 0 };
bool m_useTimer { false };
};
}
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