| /* |
| * 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 : public DisplayRefreshMonitorClient |
| { |
| WTF_MAKE_FAST_ALLOCATED; |
| public: |
| static std::unique_ptr<RenderingUpdateScheduler> create(Page& page) |
| { |
| return makeUnique<RenderingUpdateScheduler>(page); |
| } |
| |
| RenderingUpdateScheduler(Page&); |
| |
| void adjustRenderingUpdateFrequency(); |
| void scheduleTimedRenderingUpdate(); |
| void scheduleImmediateRenderingUpdate(); |
| void scheduleRenderingUpdate(); |
| |
| void windowScreenDidChange(PlatformDisplayID); |
| |
| private: |
| void setPreferredFramesPerSecond(FramesPerSecond); |
| bool scheduleAnimation(FramesPerSecond); |
| RefPtr<DisplayRefreshMonitor> createDisplayRefreshMonitor(PlatformDisplayID) const final; |
| void displayRefreshFired() final; |
| |
| bool isScheduled() const; |
| void startTimer(Seconds); |
| void clearScheduled(); |
| |
| Page& m_page; |
| bool m_scheduled { false }; |
| std::unique_ptr<Timer> m_refreshTimer; |
| FramesPerSecond m_preferredFramesPerSecond { FullSpeedFramesPerSecond }; |
| }; |
| |
| } |