зеркало из https://github.com/mozilla/gecko-dev.git
118 строки
4.0 KiB
C++
118 строки
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_AnimationEffect_h
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#define mozilla_dom_AnimationEffect_h
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#include "mozilla/ComputedTiming.h"
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#include "mozilla/dom/Animation.h"
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#include "mozilla/dom/Nullable.h"
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#include "mozilla/dom/ScrollTimeline.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/TimingParams.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsWrapperCache.h"
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namespace mozilla {
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class ErrorResult;
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namespace dom {
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class KeyframeEffect;
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struct ComputedEffectTiming;
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struct EffectTiming;
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struct OptionalEffectTiming;
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class Document;
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class AnimationEffect : public nsISupports, public nsWrapperCache {
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(AnimationEffect)
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AnimationEffect(Document* aDocument, TimingParams&& aTiming);
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virtual KeyframeEffect* AsKeyframeEffect() { return nullptr; }
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nsISupports* GetParentObject() const;
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bool IsCurrent() const;
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bool IsInEffect() const;
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bool HasFiniteActiveDuration() const {
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return NormalizedTiming().ActiveDuration() != TimeDuration::Forever();
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}
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// AnimationEffect interface
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virtual void GetTiming(EffectTiming& aRetVal) const;
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virtual void GetComputedTimingAsDict(ComputedEffectTiming& aRetVal) const;
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virtual void UpdateTiming(const OptionalEffectTiming& aTiming,
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ErrorResult& aRv);
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const TimingParams& SpecifiedTiming() const { return mTiming; }
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void SetSpecifiedTiming(TimingParams&& aTiming);
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const TimingParams& NormalizedTiming() const {
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MOZ_ASSERT((mAnimation && mAnimation->UsingScrollTimeline() &&
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mNormalizedTiming) ||
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!mNormalizedTiming,
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"We do normalization only for progress-based timeline");
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return mNormalizedTiming ? *mNormalizedTiming : mTiming;
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}
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// There are 3 conditions where we have to update the normalized timing:
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// 1. mAnimation is changed, or
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// 2. the timeline of mAnimation is changed, or
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// 3. mTiming is changed.
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void UpdateNormalizedTiming();
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// This function takes as input the timing parameters of an animation and
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// returns the computed timing at the specified local time.
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//
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// The local time may be null in which case only static parameters such as the
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// active duration are calculated. All other members of the returned object
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// are given a null/initial value.
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//
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// This function returns a null mProgress member of the return value
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// if the animation should not be run
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// (because it is not currently active and is not filling at this time).
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static ComputedTiming GetComputedTimingAt(
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const Nullable<TimeDuration>& aLocalTime, const TimingParams& aTiming,
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double aPlaybackRate,
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Animation::ProgressTimelinePosition aProgressTimelinePosition);
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// Shortcut that gets the computed timing using the current local time as
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// calculated from the timeline time.
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ComputedTiming GetComputedTiming(const TimingParams* aTiming = nullptr) const;
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virtual void SetAnimation(Animation* aAnimation) = 0;
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Animation* GetAnimation() const { return mAnimation; };
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/**
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* Returns true if this effect animates one of the properties we consider
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* geometric properties, e.g. properties such as 'width' or 'margin-left'
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* that we try to synchronize with transform animations, on a valid target
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* element.
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*/
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virtual bool AffectsGeometry() const = 0;
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protected:
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virtual ~AnimationEffect();
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Nullable<TimeDuration> GetLocalTime() const;
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protected:
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RefPtr<Document> mDocument;
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RefPtr<Animation> mAnimation;
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TimingParams mTiming;
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Maybe<TimingParams> mNormalizedTiming;
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// Whether the Animation is System, ResistFingerprinting, or neither
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enum RTPCallerType mRTPCallerType;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_AnimationEffect_h
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