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/*
* Copyright (C) 2011 Google Inc. All Rights Reserved.
* Copyright (C) 2020 Metrological Group B.V.
* Copyright (C) 2020 Igalia S.L.
*
* 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
#if ENABLE(OFFSCREEN_CANVAS_IN_WORKERS)
#include "ActiveDOMObject.h"
#include "DOMHighResTimeStamp.h"
#include "PlatformScreen.h"
#include "Timer.h"
#include <wtf/ThreadSafeRefCounted.h>
namespace WebCore {
class RequestAnimationFrameCallback;
class WorkerGlobalScope;
class WorkerAnimationController final : public ThreadSafeRefCounted<WorkerAnimationController>, public ActiveDOMObject {
public:
static Ref<WorkerAnimationController> create(WorkerGlobalScope&);
~WorkerAnimationController();
int requestAnimationFrame(Ref<RequestAnimationFrameCallback>&&);
void cancelAnimationFrame(int);
// ActiveDOMObject.
void ref() const final { ThreadSafeRefCounted::ref(); }
void deref() const final { ThreadSafeRefCounted::deref(); }
private:
WorkerAnimationController(WorkerGlobalScope&);
// ActiveDOMObject.
bool virtualHasPendingActivity() const final;
void stop() final;
void suspend(ReasonForSuspension) final;
void resume() final;
void scheduleAnimation();
void animationTimerFired();
void serviceRequestAnimationFrameCallbacks(DOMHighResTimeStamp timestamp);
WorkerGlobalScope& m_workerGlobalScope;
typedef Vector<RefPtr<RequestAnimationFrameCallback>> CallbackList;
CallbackList m_animationCallbacks;
typedef int CallbackId;
CallbackId m_nextAnimationCallbackId { 0 };
Timer m_animationTimer;
DOMHighResTimeStamp m_lastAnimationFrameTimestamp { 0 };
bool m_savedIsActive { false };
};
} // namespace WebCore
#endif
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