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/*
* Copyright (C) 2011 Google Inc. All Rights Reserved.
* Copyright (C) 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. AND ITS CONTRIBUTORS ``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 ITS 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 "Document.h"
#include "ReducedResolutionSeconds.h"
#include "Timer.h"
#include <wtf/CheckedPtr.h>
#include <wtf/OptionSet.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class ImminentlyScheduledWorkScope;
class Page;
class RequestAnimationFrameCallback;
class UserGestureToken;
class WeakPtrImplWithEventTargetData;
class ScriptedAnimationController : public RefCounted<ScriptedAnimationController>
{
public:
static Ref<ScriptedAnimationController> create(Document& document)
{
return adoptRef(*new ScriptedAnimationController(document));
}
~ScriptedAnimationController();
void clearDocumentPointer() { m_document = nullptr; }
WEBCORE_EXPORT Seconds interval() const;
WEBCORE_EXPORT OptionSet<ThrottlingReason> throttlingReasons() const;
void suspend();
void resume();
void addThrottlingReason(ThrottlingReason reason) { m_throttlingReasons.add(reason); }
void removeThrottlingReason(ThrottlingReason reason) { m_throttlingReasons.remove(reason); }
using CallbackId = int;
CallbackId registerCallback(Ref<RequestAnimationFrameCallback>&&);
void cancelCallback(CallbackId);
void serviceRequestAnimationFrameCallbacks(ReducedResolutionSeconds);
private:
ScriptedAnimationController(Document&);
Page* page() const;
Seconds preferredScriptedAnimationInterval() const;
bool isThrottledRelativeToPage() const;
bool shouldRescheduleRequestAnimationFrame(ReducedResolutionSeconds) const;
void scheduleAnimation();
RefPtr<Document> protectedDocument();
struct CallbackData {
Ref<RequestAnimationFrameCallback> callback;
RefPtr<UserGestureToken> userGestureTokenToForward;
RefPtr<ImminentlyScheduledWorkScope> scheduledWorkScope;
};
Vector<CallbackData> m_callbackDataList;
WeakPtr<Document, WeakPtrImplWithEventTargetData> m_document;
CallbackId m_nextCallbackId { 0 };
int m_suspendCount { 0 };
ReducedResolutionSeconds m_lastAnimationFrameTimestamp;
OptionSet<ThrottlingReason> m_throttlingReasons;
};
} // namespace WebCore
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