Source code
Revision control
Copy as Markdown
Other Tools
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "mozilla/TimingParams.h"
#include "mozilla/AnimationUtils.h"
#include "mozilla/dom/AnimatableBinding.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/KeyframeAnimationOptionsBinding.h"
#include "mozilla/dom/KeyframeEffectBinding.h"
#include "mozilla/ServoCSSParser.h"
namespace mozilla {
template <class OptionsType>
static const dom::EffectTiming& GetTimingProperties(
const OptionsType& aOptions);
template <>
/* static */
const dom::EffectTiming& GetTimingProperties(
const dom::UnrestrictedDoubleOrKeyframeEffectOptions& aOptions) {
MOZ_ASSERT(aOptions.IsKeyframeEffectOptions());
return aOptions.GetAsKeyframeEffectOptions();
}
template <>
/* static */
const dom::EffectTiming& GetTimingProperties(
const dom::UnrestrictedDoubleOrKeyframeAnimationOptions& aOptions) {
MOZ_ASSERT(aOptions.IsKeyframeAnimationOptions());
return aOptions.GetAsKeyframeAnimationOptions();
}
template <class OptionsType>
/* static */
TimingParams TimingParams::FromOptionsType(const OptionsType& aOptions,
ErrorResult& aRv) {
TimingParams result;
if (aOptions.IsUnrestrictedDouble()) {
double durationInMs = aOptions.GetAsUnrestrictedDouble();
if (durationInMs >= 0) {
result.mDuration.emplace(
StickyTimeDuration::FromMilliseconds(durationInMs));
} else {
nsPrintfCString error("Duration value %g is less than 0", durationInMs);
aRv.ThrowTypeError(error);
return result;
}
result.Update();
} else {
const dom::EffectTiming& timing = GetTimingProperties(aOptions);
result = FromEffectTiming(timing, aRv);
}
return result;
}
/* static */
TimingParams TimingParams::FromOptionsUnion(
const dom::UnrestrictedDoubleOrKeyframeEffectOptions& aOptions,
ErrorResult& aRv) {
return FromOptionsType(aOptions, aRv);
}
/* static */
TimingParams TimingParams::FromOptionsUnion(
const dom::UnrestrictedDoubleOrKeyframeAnimationOptions& aOptions,
ErrorResult& aRv) {
return FromOptionsType(aOptions, aRv);
}
/* static */
TimingParams TimingParams::FromEffectTiming(
const dom::EffectTiming& aEffectTiming, ErrorResult& aRv) {
TimingParams result;
Maybe<StickyTimeDuration> duration =
TimingParams::ParseDuration(aEffectTiming.mDuration, aRv);
if (aRv.Failed()) {
return result;
}
TimingParams::ValidateIterationStart(aEffectTiming.mIterationStart, aRv);
if (aRv.Failed()) {
return result;
}
TimingParams::ValidateIterations(aEffectTiming.mIterations, aRv);
if (aRv.Failed()) {
return result;
}
Maybe<StyleComputedTimingFunction> easing =
ParseEasing(aEffectTiming.mEasing, aRv);
if (aRv.Failed()) {
return result;
}
result.mDuration = duration;
result.mDelay = TimeDuration::FromMilliseconds(aEffectTiming.mDelay);
result.mEndDelay = TimeDuration::FromMilliseconds(aEffectTiming.mEndDelay);
result.mIterations = aEffectTiming.mIterations;
result.mIterationStart = aEffectTiming.mIterationStart;
result.mDirection = aEffectTiming.mDirection;
result.mFill = aEffectTiming.mFill;
result.mFunction = std::move(easing);
result.Update();
return result;
}
/* static */
TimingParams TimingParams::MergeOptionalEffectTiming(
const TimingParams& aSource, const dom::OptionalEffectTiming& aEffectTiming,
ErrorResult& aRv) {
MOZ_ASSERT(!aRv.Failed(), "Initially return value should be ok");
TimingParams result = aSource;
// Check for errors first
Maybe<StickyTimeDuration> duration;
if (aEffectTiming.mDuration.WasPassed()) {
duration =
TimingParams::ParseDuration(aEffectTiming.mDuration.Value(), aRv);
if (aRv.Failed()) {
return result;
}
}
if (aEffectTiming.mIterationStart.WasPassed()) {
TimingParams::ValidateIterationStart(aEffectTiming.mIterationStart.Value(),
aRv);
if (aRv.Failed()) {
return result;
}
}
if (aEffectTiming.mIterations.WasPassed()) {
TimingParams::ValidateIterations(aEffectTiming.mIterations.Value(), aRv);
if (aRv.Failed()) {
return result;
}
}
Maybe<StyleComputedTimingFunction> easing;
if (aEffectTiming.mEasing.WasPassed()) {
easing = ParseEasing(aEffectTiming.mEasing.Value(), aRv);
if (aRv.Failed()) {
return result;
}
}
// Assign values
if (aEffectTiming.mDuration.WasPassed()) {
result.mDuration = duration;
}
if (aEffectTiming.mDelay.WasPassed()) {
result.mDelay =
TimeDuration::FromMilliseconds(aEffectTiming.mDelay.Value());
}
if (aEffectTiming.mEndDelay.WasPassed()) {
result.mEndDelay =
TimeDuration::FromMilliseconds(aEffectTiming.mEndDelay.Value());
}
if (aEffectTiming.mIterations.WasPassed()) {
result.mIterations = aEffectTiming.mIterations.Value();
}
if (aEffectTiming.mIterationStart.WasPassed()) {
result.mIterationStart = aEffectTiming.mIterationStart.Value();
}
if (aEffectTiming.mDirection.WasPassed()) {
result.mDirection = aEffectTiming.mDirection.Value();
}
if (aEffectTiming.mFill.WasPassed()) {
result.mFill = aEffectTiming.mFill.Value();
}
if (aEffectTiming.mEasing.WasPassed()) {
result.mFunction = easing;
}
result.Update();
return result;
}
/* static */
Maybe<StyleComputedTimingFunction> TimingParams::ParseEasing(
const nsACString& aEasing, ErrorResult& aRv) {
auto timingFunction = StyleComputedTimingFunction::LinearKeyword();
if (!ServoCSSParser::ParseEasing(aEasing, timingFunction)) {
aRv.ThrowTypeError<dom::MSG_INVALID_EASING_ERROR>(aEasing);
return Nothing();
}
if (timingFunction.IsLinearKeyword()) {
return Nothing();
}
return Some(std::move(timingFunction));
}
bool TimingParams::operator==(const TimingParams& aOther) const {
// We don't compare mActiveDuration and mEndTime because they are calculated
// from other timing parameters.
return mDuration == aOther.mDuration && mDelay == aOther.mDelay &&
mEndDelay == aOther.mEndDelay && mIterations == aOther.mIterations &&
mIterationStart == aOther.mIterationStart &&
mDirection == aOther.mDirection && mFill == aOther.mFill &&
mFunction == aOther.mFunction;
}
// FIXME: This is a tentative way to normalize the timing which is defined in
// [web-animations-2] [1]. I borrow this implementation and some concepts for
// the edge cases from Chromium [2] so we can match the behavior with them. The
// implementation here ignores the case of percentage of start delay, end delay,
// and duration because Gecko doesn't support them.
//
// introduce animaiton ranges.
//
// [1]
TimingParams TimingParams::Normalize(
const TimeDuration& aTimelineDuration) const {
MOZ_ASSERT(aTimelineDuration,
"the timeline duration of scroll-timeline is always non-zero now");
TimingParams normalizedTiming(*this);
// Handle iteration duration value of "auto" first.
if (!mDuration) {
// If the iteration duration is auto, then:
// Set start delay and end delay to 0, as it is not possible to mix time
// and proportions.
normalizedTiming.mDelay = TimeDuration();
normalizedTiming.mEndDelay = TimeDuration();
// range (e.g. animation-range-{start|end}). For now, we use the default
// timeline duration as the normalized duration of this timing.
normalizedTiming.mDuration.emplace(aTimelineDuration);
normalizedTiming.Update();
return normalizedTiming;
}
if (mEndTime.IsZero()) {
// mEndTime of zero causes division by zero so we handle it here.
//
// FIXME: The spec doesn't mention this case, so we might have to update
// this based on the spec issue,
normalizedTiming.mDelay = TimeDuration();
normalizedTiming.mEndDelay = TimeDuration();
normalizedTiming.mDuration = Some(TimeDuration());
} else if (mEndTime == TimeDuration::Forever()) {
// The iteration count or duration may be infinite; however, start and
// end delays are strictly finite. Thus, in the limit when end time
// approaches infinity:
// start delay / end time = finite / infinite = 0
// end delay / end time = finite / infinite = 0
// iteration duration / end time = 1 / iteration count
// This condition can be reached by switching to a scroll timeline on
// an existing infinite duration animation.
//
// FIXME: The spec doesn't mention this case, so we might have to update
// this based on the spec issue,
normalizedTiming.mDelay = TimeDuration();
normalizedTiming.mEndDelay = TimeDuration();
normalizedTiming.mDuration =
Some(aTimelineDuration.MultDouble(1.0 / mIterations));
} else {
// Convert to percentages then multiply by the timeline duration.
const double endTimeInSec = mEndTime.ToSeconds();
normalizedTiming.mDelay =
aTimelineDuration.MultDouble(mDelay.ToSeconds() / endTimeInSec);
normalizedTiming.mEndDelay =
aTimelineDuration.MultDouble(mEndDelay.ToSeconds() / endTimeInSec);
normalizedTiming.mDuration = Some(StickyTimeDuration(
aTimelineDuration.MultDouble(mDuration->ToSeconds() / endTimeInSec)));
}
normalizedTiming.Update();
return normalizedTiming;
}
} // namespace mozilla