diff options
Diffstat (limited to 'layout/style/nsAnimationManager.cpp')
| -rw-r--r-- | layout/style/nsAnimationManager.cpp | 152 |
1 files changed, 87 insertions, 65 deletions
diff --git a/layout/style/nsAnimationManager.cpp b/layout/style/nsAnimationManager.cpp index ed2b5afc7..8d4e8fcee 100644 --- a/layout/style/nsAnimationManager.cpp +++ b/layout/style/nsAnimationManager.cpp @@ -33,11 +33,15 @@ using mozilla::dom::AnimationPlayState; using mozilla::dom::KeyframeEffectReadOnly; using mozilla::dom::CSSAnimation; +typedef mozilla::ComputedTiming::AnimationPhase AnimationPhase; + namespace { -// Pair of an event message and elapsed time used when determining the set of -// events to queue. -typedef Pair<EventMessage, StickyTimeDuration> EventPair; +struct AnimationEventParams { + EventMessage mMessage; + StickyTimeDuration mElapsedTime; + TimeStamp mTimeStamp; +}; } // anonymous namespace @@ -196,75 +200,93 @@ CSSAnimation::QueueEvents() ComputedTiming computedTiming = mEffect->GetComputedTiming(); - if (computedTiming.mPhase == ComputedTiming::AnimationPhase::Null) { - return; // do nothing + ComputedTiming::AnimationPhase currentPhase = computedTiming.mPhase; + uint64_t currentIteration = computedTiming.mCurrentIteration; + if (currentPhase == mPreviousPhase && + currentIteration == mPreviousIteration) { + return; } - // Note that script can change the start time, so we have to handle moving - // backwards through the animation as well as forwards. An 'animationstart' - // is dispatched if we enter the active phase (regardless if that is from - // before or after the animation's active phase). An 'animationend' is - // dispatched if we leave the active phase (regardless if that is to before - // or after the animation's active phase). - - bool wasActive = mPreviousPhaseOrIteration != PREVIOUS_PHASE_BEFORE && - mPreviousPhaseOrIteration != PREVIOUS_PHASE_AFTER; - bool isActive = - computedTiming.mPhase == ComputedTiming::AnimationPhase::Active; - bool isSameIteration = - computedTiming.mCurrentIteration == mPreviousPhaseOrIteration; - bool skippedActivePhase = - (mPreviousPhaseOrIteration == PREVIOUS_PHASE_BEFORE && - computedTiming.mPhase == ComputedTiming::AnimationPhase::After) || - (mPreviousPhaseOrIteration == PREVIOUS_PHASE_AFTER && - computedTiming.mPhase == ComputedTiming::AnimationPhase::Before); - bool skippedFirstIteration = - isActive && - mPreviousPhaseOrIteration == PREVIOUS_PHASE_BEFORE && - computedTiming.mCurrentIteration > 0; - - MOZ_ASSERT(!skippedActivePhase || (!isActive && !wasActive), - "skippedActivePhase only makes sense if we were & are inactive"); - - if (computedTiming.mPhase == ComputedTiming::AnimationPhase::Before) { - mPreviousPhaseOrIteration = PREVIOUS_PHASE_BEFORE; - } else if (computedTiming.mPhase == ComputedTiming::AnimationPhase::Active) { - mPreviousPhaseOrIteration = computedTiming.mCurrentIteration; - } else if (computedTiming.mPhase == ComputedTiming::AnimationPhase::After) { - mPreviousPhaseOrIteration = PREVIOUS_PHASE_AFTER; + const StickyTimeDuration zeroDuration; + StickyTimeDuration intervalStartTime = + std::max(std::min(StickyTimeDuration(-mEffect->SpecifiedTiming().mDelay), + computedTiming.mActiveDuration), + zeroDuration); + StickyTimeDuration intervalEndTime = + std::max(std::min((EffectEnd() - mEffect->SpecifiedTiming().mDelay), + computedTiming.mActiveDuration), + zeroDuration); + + uint64_t iterationBoundary = mPreviousIteration > currentIteration + ? currentIteration + 1 + : currentIteration; + StickyTimeDuration iterationStartTime = + computedTiming.mDuration.MultDouble( + (iterationBoundary - computedTiming.mIterationStart)); + + TimeStamp startTimeStamp = ElapsedTimeToTimeStamp(intervalStartTime); + TimeStamp endTimeStamp = ElapsedTimeToTimeStamp(intervalEndTime); + TimeStamp iterationTimeStamp = ElapsedTimeToTimeStamp(iterationStartTime); + + AutoTArray<AnimationEventParams, 2> events; + switch (mPreviousPhase) { + case AnimationPhase::Null: + case AnimationPhase::Before: + if (currentPhase == AnimationPhase::Active) { + events.AppendElement(AnimationEventParams{ eAnimationStart, + intervalStartTime, + startTimeStamp }); + } else if (currentPhase == AnimationPhase::After) { + events.AppendElement(AnimationEventParams{ eAnimationStart, + intervalStartTime, + startTimeStamp }); + events.AppendElement(AnimationEventParams{ eAnimationEnd, + intervalEndTime, + endTimeStamp }); + } + break; + case AnimationPhase::Active: + if (currentPhase == AnimationPhase::Before) { + events.AppendElement(AnimationEventParams{ eAnimationEnd, + intervalStartTime, + startTimeStamp }); + } else if (currentPhase == AnimationPhase::Active) { + // The currentIteration must have changed or element we would have + // returned early above. + MOZ_ASSERT(currentIteration != mPreviousIteration); + events.AppendElement(AnimationEventParams{ eAnimationIteration, + iterationStartTime, + iterationTimeStamp }); + } else if (currentPhase == AnimationPhase::After) { + events.AppendElement(AnimationEventParams{ eAnimationEnd, + intervalEndTime, + endTimeStamp }); + } + break; + case AnimationPhase::After: + if (currentPhase == AnimationPhase::Before) { + events.AppendElement(AnimationEventParams{ eAnimationStart, + intervalEndTime, + startTimeStamp}); + events.AppendElement(AnimationEventParams{ eAnimationEnd, + intervalStartTime, + endTimeStamp }); + } else if (currentPhase == AnimationPhase::Active) { + events.AppendElement(AnimationEventParams{ eAnimationStart, + intervalEndTime, + endTimeStamp }); + } + break; } - AutoTArray<EventPair, 2> events; - StickyTimeDuration initialAdvance = StickyTimeDuration(InitialAdvance()); - StickyTimeDuration iterationStart = computedTiming.mDuration * - computedTiming.mCurrentIteration; - const StickyTimeDuration& activeDuration = computedTiming.mActiveDuration; - - if (skippedFirstIteration) { - // Notify animationstart and animationiteration in same tick. - events.AppendElement(EventPair(eAnimationStart, initialAdvance)); - events.AppendElement(EventPair(eAnimationIteration, - std::max(iterationStart, initialAdvance))); - } else if (!wasActive && isActive) { - events.AppendElement(EventPair(eAnimationStart, initialAdvance)); - } else if (wasActive && !isActive) { - events.AppendElement(EventPair(eAnimationEnd, activeDuration)); - } else if (wasActive && isActive && !isSameIteration) { - events.AppendElement(EventPair(eAnimationIteration, iterationStart)); - } else if (skippedActivePhase) { - events.AppendElement(EventPair(eAnimationStart, - std::min(initialAdvance, activeDuration))); - events.AppendElement(EventPair(eAnimationEnd, activeDuration)); - } else { - return; // No events need to be sent - } + mPreviousPhase = currentPhase; + mPreviousIteration = currentIteration; - for (const EventPair& pair : events){ + for (const AnimationEventParams& event : events){ manager->QueueEvent( AnimationEventInfo(owningElement, owningPseudoType, - pair.first(), mAnimationName, - pair.second(), - ElapsedTimeToTimeStamp(pair.second()), + event.mMessage, mAnimationName, + event.mElapsedTime, event.mTimeStamp, this)); } } |