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89 lines
2.8 KiB
C++
89 lines
2.8 KiB
C++
/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
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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_AnimationTimeline_h
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#define mozilla_dom_AnimationTimeline_h
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#include "nsWrapperCache.h"
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#include "nsCycleCollectionParticipant.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/TimeStamp.h"
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#include "js/TypeDecls.h"
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#include "nsIDocument.h"
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struct JSContext;
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class nsRefreshDriver;
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namespace mozilla {
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namespace dom {
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class AnimationTimeline MOZ_FINAL : public nsWrapperCache
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{
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public:
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explicit AnimationTimeline(nsIDocument* aDocument)
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: mDocument(aDocument)
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{
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}
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protected:
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virtual ~AnimationTimeline() { }
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public:
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NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(AnimationTimeline)
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(AnimationTimeline)
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nsIGlobalObject* GetParentObject() const
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{
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return mDocument->GetParentObject();
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}
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virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
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// AnimationTimeline methods
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Nullable<TimeDuration> GetCurrentTime() const;
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// Wrapper functions for AnimationTimeline DOM methods when called from
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// script.
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Nullable<double> GetCurrentTimeAsDouble() const;
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Nullable<TimeDuration> ToTimelineTime(const TimeStamp& aTimeStamp) const;
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TimeStamp ToTimeStamp(const TimeDuration& aTimelineTime) const;
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// Force the timeline to advance to |aTimeStamp|.
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//
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// Normally the timeline uses the refresh driver time but when we have
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// animations that are timed from when their first frame is rendered we need
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// to bring the timeline forward to that moment. If we don't, calling
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// IsRunning() will incorrectly return false (because GetCurrentTime() will
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// return a negative time) until the next refresh driver tick causes the
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// timeline to catch up.
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//
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// |aTimeStamp| must be greater or equal to the current refresh driver
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// time for the document with which this timeline is associated unless the
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// refresh driver is under test control, in which case this method will
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// be a no-op.
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void FastForward(const TimeStamp& aTimeStamp);
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nsRefreshDriver* GetRefreshDriver() const;
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protected:
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TimeStamp GetCurrentTimeStamp() const;
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nsCOMPtr<nsIDocument> mDocument;
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// The most recently used refresh driver time. This is used in cases where
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// we don't have a refresh driver (e.g. because we are in a display:none
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// iframe).
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mutable TimeStamp mLastRefreshDriverTime;
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// The time to which the timeline has been forced-to in order to account for
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// animations that are started in-between frames.
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mutable TimeStamp mFastForwardTime;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_AnimationTimeline_h
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