mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 22:25:30 +00:00
734 lines
26 KiB
C++
734 lines
26 KiB
C++
/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
|
|
/* 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
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "nsAnimationManager.h"
|
|
#include "nsTransitionManager.h"
|
|
|
|
#include "mozilla/EventDispatcher.h"
|
|
#include "mozilla/MemoryReporting.h"
|
|
#include "mozilla/StyleAnimationValue.h"
|
|
|
|
#include "nsPresContext.h"
|
|
#include "nsStyleSet.h"
|
|
#include "nsStyleChangeList.h"
|
|
#include "nsCSSRules.h"
|
|
#include "RestyleManager.h"
|
|
#include "nsLayoutUtils.h"
|
|
#include "nsIFrame.h"
|
|
#include "nsIDocument.h"
|
|
#include <math.h>
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::css;
|
|
using mozilla::dom::Animation;
|
|
using mozilla::dom::AnimationPlayer;
|
|
using mozilla::CSSAnimationPlayer;
|
|
|
|
mozilla::dom::Promise*
|
|
CSSAnimationPlayer::GetReady(ErrorResult& aRv)
|
|
{
|
|
FlushStyle();
|
|
return AnimationPlayer::GetReady(aRv);
|
|
}
|
|
|
|
void
|
|
CSSAnimationPlayer::Play()
|
|
{
|
|
mPauseShouldStick = false;
|
|
AnimationPlayer::Play();
|
|
}
|
|
|
|
void
|
|
CSSAnimationPlayer::Pause()
|
|
{
|
|
mPauseShouldStick = true;
|
|
AnimationPlayer::Pause();
|
|
}
|
|
|
|
mozilla::dom::AnimationPlayState
|
|
CSSAnimationPlayer::PlayStateFromJS() const
|
|
{
|
|
// Flush style to ensure that any properties controlling animation state
|
|
// (e.g. animation-play-state) are fully updated.
|
|
FlushStyle();
|
|
return AnimationPlayer::PlayStateFromJS();
|
|
}
|
|
|
|
void
|
|
CSSAnimationPlayer::PlayFromJS()
|
|
{
|
|
// Note that flushing style below might trigger calls to
|
|
// PlayFromStyle()/PauseFromStyle() on this object.
|
|
FlushStyle();
|
|
AnimationPlayer::PlayFromJS();
|
|
}
|
|
|
|
void
|
|
CSSAnimationPlayer::PlayFromStyle()
|
|
{
|
|
mIsStylePaused = false;
|
|
if (!mPauseShouldStick) {
|
|
DoPlay();
|
|
}
|
|
}
|
|
|
|
void
|
|
CSSAnimationPlayer::PauseFromStyle()
|
|
{
|
|
// Check if the pause state is being overridden
|
|
if (mIsStylePaused) {
|
|
return;
|
|
}
|
|
|
|
mIsStylePaused = true;
|
|
DoPause();
|
|
}
|
|
|
|
void
|
|
CSSAnimationPlayer::QueueEvents(EventArray& aEventsToDispatch)
|
|
{
|
|
if (!mSource) {
|
|
return;
|
|
}
|
|
|
|
ComputedTiming computedTiming = mSource->GetComputedTiming();
|
|
|
|
dom::Element* target;
|
|
nsCSSPseudoElements::Type targetPseudoType;
|
|
mSource->GetTarget(target, targetPseudoType);
|
|
|
|
switch (computedTiming.mPhase) {
|
|
case ComputedTiming::AnimationPhase_Null:
|
|
case ComputedTiming::AnimationPhase_Before:
|
|
// Do nothing
|
|
break;
|
|
|
|
case ComputedTiming::AnimationPhase_Active:
|
|
// Dispatch 'animationstart' or 'animationiteration' when needed.
|
|
if (computedTiming.mCurrentIteration != mLastNotification) {
|
|
// Notify 'animationstart' even if a negative delay puts us
|
|
// past the first iteration.
|
|
// Note that when somebody changes the animation-duration
|
|
// dynamically, this will fire an extra iteration event
|
|
// immediately in many cases. It's not clear to me if that's the
|
|
// right thing to do.
|
|
uint32_t message = mLastNotification == LAST_NOTIFICATION_NONE
|
|
? NS_ANIMATION_START
|
|
: NS_ANIMATION_ITERATION;
|
|
mLastNotification = computedTiming.mCurrentIteration;
|
|
TimeDuration iterationStart =
|
|
mSource->Timing().mIterationDuration *
|
|
computedTiming.mCurrentIteration;
|
|
TimeDuration elapsedTime =
|
|
std::max(iterationStart, mSource->InitialAdvance());
|
|
AnimationEventInfo ei(target, Name(), message,
|
|
StickyTimeDuration(elapsedTime),
|
|
PseudoTypeAsString(targetPseudoType));
|
|
aEventsToDispatch.AppendElement(ei);
|
|
}
|
|
break;
|
|
|
|
case ComputedTiming::AnimationPhase_After:
|
|
// If we skipped the animation interval entirely, dispatch
|
|
// 'animationstart' first
|
|
if (mLastNotification == LAST_NOTIFICATION_NONE) {
|
|
// Notifying for start of 0th iteration.
|
|
// (This is overwritten below but we set it here to maintain
|
|
// internal consistency.)
|
|
mLastNotification = 0;
|
|
StickyTimeDuration elapsedTime =
|
|
std::min(StickyTimeDuration(mSource->InitialAdvance()),
|
|
computedTiming.mActiveDuration);
|
|
AnimationEventInfo ei(target, Name(), NS_ANIMATION_START,
|
|
elapsedTime,
|
|
PseudoTypeAsString(targetPseudoType));
|
|
aEventsToDispatch.AppendElement(ei);
|
|
}
|
|
// Dispatch 'animationend' when needed.
|
|
if (mLastNotification != LAST_NOTIFICATION_END) {
|
|
mLastNotification = LAST_NOTIFICATION_END;
|
|
AnimationEventInfo ei(target, Name(), NS_ANIMATION_END,
|
|
computedTiming.mActiveDuration,
|
|
PseudoTypeAsString(targetPseudoType));
|
|
aEventsToDispatch.AppendElement(ei);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
CommonAnimationManager*
|
|
CSSAnimationPlayer::GetAnimationManager() const
|
|
{
|
|
nsPresContext* context = GetPresContext();
|
|
if (!context) {
|
|
return nullptr;
|
|
}
|
|
|
|
return context->AnimationManager();
|
|
}
|
|
|
|
/* static */ nsString
|
|
CSSAnimationPlayer::PseudoTypeAsString(nsCSSPseudoElements::Type aPseudoType)
|
|
{
|
|
switch (aPseudoType) {
|
|
case nsCSSPseudoElements::ePseudo_before:
|
|
return NS_LITERAL_STRING("::before");
|
|
case nsCSSPseudoElements::ePseudo_after:
|
|
return NS_LITERAL_STRING("::after");
|
|
default:
|
|
return EmptyString();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::UpdateStyleAndEvents(AnimationPlayerCollection*
|
|
aCollection,
|
|
TimeStamp aRefreshTime,
|
|
EnsureStyleRuleFlags aFlags)
|
|
{
|
|
aCollection->EnsureStyleRuleFor(aRefreshTime, aFlags);
|
|
QueueEvents(aCollection, mPendingEvents);
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::QueueEvents(AnimationPlayerCollection* aCollection,
|
|
EventArray& aEventsToDispatch)
|
|
{
|
|
for (size_t playerIdx = aCollection->mPlayers.Length(); playerIdx-- != 0; ) {
|
|
CSSAnimationPlayer* player =
|
|
aCollection->mPlayers[playerIdx]->AsCSSAnimationPlayer();
|
|
MOZ_ASSERT(player, "Expected a collection of CSS Animation players");
|
|
player->QueueEvents(aEventsToDispatch);
|
|
}
|
|
}
|
|
|
|
/* virtual */ size_t
|
|
nsAnimationManager::SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const
|
|
{
|
|
return CommonAnimationManager::SizeOfExcludingThis(aMallocSizeOf);
|
|
|
|
// Measurement of the following members may be added later if DMD finds it is
|
|
// worthwhile:
|
|
// - mPendingEvents
|
|
}
|
|
|
|
/* virtual */ size_t
|
|
nsAnimationManager::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const
|
|
{
|
|
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
|
|
}
|
|
|
|
nsIStyleRule*
|
|
nsAnimationManager::CheckAnimationRule(nsStyleContext* aStyleContext,
|
|
mozilla::dom::Element* aElement)
|
|
{
|
|
if (!mPresContext->IsDynamic()) {
|
|
// For print or print preview, ignore animations.
|
|
return nullptr;
|
|
}
|
|
|
|
// Everything that causes our animation data to change triggers a
|
|
// style change, which in turn triggers a non-animation restyle.
|
|
// Likewise, when we initially construct frames, we're not in a
|
|
// style change, but also not in an animation restyle.
|
|
|
|
const nsStyleDisplay* disp = aStyleContext->StyleDisplay();
|
|
AnimationPlayerCollection* collection =
|
|
GetAnimationPlayers(aElement, aStyleContext->GetPseudoType(), false);
|
|
if (!collection &&
|
|
disp->mAnimationNameCount == 1 &&
|
|
disp->mAnimations[0].GetName().IsEmpty()) {
|
|
return nullptr;
|
|
}
|
|
|
|
// build the animations list
|
|
dom::AnimationTimeline* timeline = aElement->OwnerDoc()->Timeline();
|
|
AnimationPlayerPtrArray newPlayers;
|
|
BuildAnimations(aStyleContext, aElement, timeline, newPlayers);
|
|
|
|
if (newPlayers.IsEmpty()) {
|
|
if (collection) {
|
|
collection->Destroy();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
if (collection) {
|
|
collection->mStyleRule = nullptr;
|
|
collection->mStyleRuleRefreshTime = TimeStamp();
|
|
collection->UpdateAnimationGeneration(mPresContext);
|
|
|
|
// Copy over the start times and (if still paused) pause starts
|
|
// for each animation (matching on name only) that was also in the
|
|
// old list of animations.
|
|
// This means that we honor dynamic changes, which isn't what the
|
|
// spec says to do, but WebKit seems to honor at least some of
|
|
// them. See
|
|
// http://lists.w3.org/Archives/Public/www-style/2011Apr/0079.html
|
|
// In order to honor what the spec said, we'd copy more data over
|
|
// (or potentially optimize BuildAnimations to avoid rebuilding it
|
|
// in the first place).
|
|
if (!collection->mPlayers.IsEmpty()) {
|
|
|
|
for (size_t newIdx = newPlayers.Length(); newIdx-- != 0;) {
|
|
AnimationPlayer* newPlayer = newPlayers[newIdx];
|
|
|
|
// Find the matching animation with this name in the old list
|
|
// of animations. We iterate through both lists in a backwards
|
|
// direction which means that if there are more animations in
|
|
// the new list of animations with a given name than in the old
|
|
// list, it will be the animations towards the of the beginning of
|
|
// the list that do not match and are treated as new animations.
|
|
nsRefPtr<CSSAnimationPlayer> oldPlayer;
|
|
size_t oldIdx = collection->mPlayers.Length();
|
|
while (oldIdx-- != 0) {
|
|
CSSAnimationPlayer* a =
|
|
collection->mPlayers[oldIdx]->AsCSSAnimationPlayer();
|
|
MOZ_ASSERT(a, "All players in the CSS Animation collection should"
|
|
" be CSSAnimationPlayer objects");
|
|
if (a->Name() == newPlayer->Name()) {
|
|
oldPlayer = a;
|
|
break;
|
|
}
|
|
}
|
|
if (!oldPlayer) {
|
|
continue;
|
|
}
|
|
|
|
// Update the old from the new so we can keep the original object
|
|
// identity (and any expando properties attached to it).
|
|
if (oldPlayer->GetSource() && newPlayer->GetSource()) {
|
|
Animation* oldAnim = oldPlayer->GetSource();
|
|
Animation* newAnim = newPlayer->GetSource();
|
|
oldAnim->Timing() = newAnim->Timing();
|
|
oldAnim->Properties() = newAnim->Properties();
|
|
}
|
|
|
|
// Reset compositor state so animation will be re-synchronized.
|
|
oldPlayer->ClearIsRunningOnCompositor();
|
|
|
|
// Handle changes in play state.
|
|
// CSSAnimationPlayer takes care of override behavior so that,
|
|
// for example, if the author has called pause(), that will
|
|
// override the animation-play-state.
|
|
// (We should check newPlayer->IsStylePaused() but that requires
|
|
// downcasting to CSSAnimationPlayer and we happen to know that
|
|
// newPlayer will only ever be paused by calling PauseFromStyle
|
|
// making IsPaused synonymous in this case.)
|
|
if (!oldPlayer->IsStylePaused() && newPlayer->IsPaused()) {
|
|
oldPlayer->PauseFromStyle();
|
|
} else if (oldPlayer->IsStylePaused() && !newPlayer->IsPaused()) {
|
|
oldPlayer->PlayFromStyle();
|
|
}
|
|
|
|
// Replace new animation with the (updated) old one and remove the
|
|
// old one from the array so we don't try to match it any more.
|
|
//
|
|
// Although we're doing this while iterating this is safe because
|
|
// we're not changing the length of newPlayers and we've finished
|
|
// iterating over the list of old iterations.
|
|
newPlayer->Cancel();
|
|
newPlayer = nullptr;
|
|
newPlayers.ReplaceElementAt(newIdx, oldPlayer);
|
|
collection->mPlayers.RemoveElementAt(oldIdx);
|
|
}
|
|
}
|
|
} else {
|
|
collection =
|
|
GetAnimationPlayers(aElement, aStyleContext->GetPseudoType(), true);
|
|
}
|
|
collection->mPlayers.SwapElements(newPlayers);
|
|
collection->mNeedsRefreshes = true;
|
|
collection->Tick();
|
|
|
|
// Cancel removed animations
|
|
for (size_t newPlayerIdx = newPlayers.Length(); newPlayerIdx-- != 0; ) {
|
|
newPlayers[newPlayerIdx]->Cancel();
|
|
}
|
|
|
|
TimeStamp refreshTime = mPresContext->RefreshDriver()->MostRecentRefresh();
|
|
UpdateStyleAndEvents(collection, refreshTime,
|
|
EnsureStyleRule_IsNotThrottled);
|
|
// We don't actually dispatch the mPendingEvents now. We'll either
|
|
// dispatch them the next time we get a refresh driver notification
|
|
// or the next time somebody calls
|
|
// nsPresShell::FlushPendingNotifications.
|
|
if (!mPendingEvents.IsEmpty()) {
|
|
mPresContext->Document()->SetNeedStyleFlush();
|
|
}
|
|
|
|
return GetAnimationRule(aElement, aStyleContext->GetPseudoType());
|
|
}
|
|
|
|
struct KeyframeData {
|
|
float mKey;
|
|
uint32_t mIndex; // store original order since sort algorithm is not stable
|
|
nsCSSKeyframeRule *mRule;
|
|
};
|
|
|
|
struct KeyframeDataComparator {
|
|
bool Equals(const KeyframeData& A, const KeyframeData& B) const {
|
|
return A.mKey == B.mKey && A.mIndex == B.mIndex;
|
|
}
|
|
bool LessThan(const KeyframeData& A, const KeyframeData& B) const {
|
|
return A.mKey < B.mKey || (A.mKey == B.mKey && A.mIndex < B.mIndex);
|
|
}
|
|
};
|
|
|
|
class ResolvedStyleCache {
|
|
public:
|
|
ResolvedStyleCache() : mCache() {}
|
|
nsStyleContext* Get(nsPresContext *aPresContext,
|
|
nsStyleContext *aParentStyleContext,
|
|
nsCSSKeyframeRule *aKeyframe);
|
|
|
|
private:
|
|
nsRefPtrHashtable<nsPtrHashKey<nsCSSKeyframeRule>, nsStyleContext> mCache;
|
|
};
|
|
|
|
nsStyleContext*
|
|
ResolvedStyleCache::Get(nsPresContext *aPresContext,
|
|
nsStyleContext *aParentStyleContext,
|
|
nsCSSKeyframeRule *aKeyframe)
|
|
{
|
|
// FIXME (spec): The css3-animations spec isn't very clear about how
|
|
// properties are resolved when they have values that depend on other
|
|
// properties (e.g., values in 'em'). I presume that they're resolved
|
|
// relative to the other styles of the element. The question is
|
|
// whether they are resolved relative to other animations: I assume
|
|
// that they're not, since that would prevent us from caching a lot of
|
|
// data that we'd really like to cache (in particular, the
|
|
// StyleAnimationValue values in AnimationPropertySegment).
|
|
nsStyleContext *result = mCache.GetWeak(aKeyframe);
|
|
if (!result) {
|
|
nsCOMArray<nsIStyleRule> rules;
|
|
rules.AppendObject(aKeyframe);
|
|
nsRefPtr<nsStyleContext> resultStrong = aPresContext->StyleSet()->
|
|
ResolveStyleByAddingRules(aParentStyleContext, rules);
|
|
mCache.Put(aKeyframe, resultStrong);
|
|
result = resultStrong;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::BuildAnimations(nsStyleContext* aStyleContext,
|
|
dom::Element* aTarget,
|
|
dom::AnimationTimeline* aTimeline,
|
|
AnimationPlayerPtrArray& aPlayers)
|
|
{
|
|
MOZ_ASSERT(aPlayers.IsEmpty(), "expect empty array");
|
|
|
|
ResolvedStyleCache resolvedStyles;
|
|
|
|
const nsStyleDisplay *disp = aStyleContext->StyleDisplay();
|
|
|
|
nsRefPtr<nsStyleContext> styleWithoutAnimation;
|
|
|
|
for (size_t animIdx = 0, animEnd = disp->mAnimationNameCount;
|
|
animIdx != animEnd; ++animIdx) {
|
|
const StyleAnimation& src = disp->mAnimations[animIdx];
|
|
|
|
// CSS Animations whose animation-name does not match a @keyframes rule do
|
|
// not generate animation events. This includes when the animation-name is
|
|
// "none" which is represented by an empty name in the StyleAnimation.
|
|
// Since such animations neither affect style nor dispatch events, we do
|
|
// not generate a corresponding AnimationPlayer for them.
|
|
nsCSSKeyframesRule* rule =
|
|
src.GetName().IsEmpty()
|
|
? nullptr
|
|
: mPresContext->StyleSet()->KeyframesRuleForName(mPresContext,
|
|
src.GetName());
|
|
if (!rule) {
|
|
continue;
|
|
}
|
|
|
|
nsRefPtr<CSSAnimationPlayer> dest = new CSSAnimationPlayer(aTimeline);
|
|
aPlayers.AppendElement(dest);
|
|
|
|
AnimationTiming timing;
|
|
timing.mIterationDuration =
|
|
TimeDuration::FromMilliseconds(src.GetDuration());
|
|
timing.mDelay = TimeDuration::FromMilliseconds(src.GetDelay());
|
|
timing.mIterationCount = src.GetIterationCount();
|
|
timing.mDirection = src.GetDirection();
|
|
timing.mFillMode = src.GetFillMode();
|
|
|
|
nsRefPtr<Animation> destAnim =
|
|
new Animation(mPresContext->Document(), aTarget,
|
|
aStyleContext->GetPseudoType(), timing, src.GetName());
|
|
dest->SetSource(destAnim);
|
|
|
|
// Even in the case where we call PauseFromStyle below, we still need to
|
|
// call PlayFromStyle first. This is because a newly-created player is idle
|
|
// and has no effect until it is played (or otherwise given a start time).
|
|
dest->PlayFromStyle();
|
|
|
|
if (src.GetPlayState() == NS_STYLE_ANIMATION_PLAY_STATE_PAUSED) {
|
|
dest->PauseFromStyle();
|
|
}
|
|
|
|
// While current drafts of css3-animations say that later keyframes
|
|
// with the same key entirely replace earlier ones (no cascading),
|
|
// this is a bad idea and contradictory to the rest of CSS. So
|
|
// we're going to keep all the keyframes for each key and then do
|
|
// the replacement on a per-property basis rather than a per-rule
|
|
// basis, just like everything else in CSS.
|
|
|
|
AutoInfallibleTArray<KeyframeData, 16> sortedKeyframes;
|
|
|
|
for (uint32_t ruleIdx = 0, ruleEnd = rule->StyleRuleCount();
|
|
ruleIdx != ruleEnd; ++ruleIdx) {
|
|
css::Rule* cssRule = rule->GetStyleRuleAt(ruleIdx);
|
|
MOZ_ASSERT(cssRule, "must have rule");
|
|
MOZ_ASSERT(cssRule->GetType() == css::Rule::KEYFRAME_RULE,
|
|
"must be keyframe rule");
|
|
nsCSSKeyframeRule *kfRule = static_cast<nsCSSKeyframeRule*>(cssRule);
|
|
|
|
const nsTArray<float> &keys = kfRule->GetKeys();
|
|
for (uint32_t keyIdx = 0, keyEnd = keys.Length();
|
|
keyIdx != keyEnd; ++keyIdx) {
|
|
float key = keys[keyIdx];
|
|
// FIXME (spec): The spec doesn't say what to do with
|
|
// out-of-range keyframes. We'll ignore them.
|
|
if (0.0f <= key && key <= 1.0f) {
|
|
KeyframeData *data = sortedKeyframes.AppendElement();
|
|
data->mKey = key;
|
|
data->mIndex = ruleIdx;
|
|
data->mRule = kfRule;
|
|
}
|
|
}
|
|
}
|
|
|
|
sortedKeyframes.Sort(KeyframeDataComparator());
|
|
|
|
if (sortedKeyframes.Length() == 0) {
|
|
// no segments
|
|
continue;
|
|
}
|
|
|
|
// Record the properties that are present in any keyframe rules we
|
|
// are using.
|
|
nsCSSPropertySet properties;
|
|
|
|
for (uint32_t kfIdx = 0, kfEnd = sortedKeyframes.Length();
|
|
kfIdx != kfEnd; ++kfIdx) {
|
|
css::Declaration *decl = sortedKeyframes[kfIdx].mRule->Declaration();
|
|
for (uint32_t propIdx = 0, propEnd = decl->Count();
|
|
propIdx != propEnd; ++propIdx) {
|
|
nsCSSProperty prop = decl->GetPropertyAt(propIdx);
|
|
if (prop != eCSSPropertyExtra_variable) {
|
|
// CSS Variables are not animatable
|
|
properties.AddProperty(prop);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (nsCSSProperty prop = nsCSSProperty(0);
|
|
prop < eCSSProperty_COUNT_no_shorthands;
|
|
prop = nsCSSProperty(prop + 1)) {
|
|
if (!properties.HasProperty(prop) ||
|
|
nsCSSProps::kAnimTypeTable[prop] == eStyleAnimType_None) {
|
|
continue;
|
|
}
|
|
|
|
// Build a list of the keyframes to use for this property. This
|
|
// means we need every keyframe with the property in it, except
|
|
// for those keyframes where a later keyframe with the *same key*
|
|
// also has the property.
|
|
AutoInfallibleTArray<uint32_t, 16> keyframesWithProperty;
|
|
float lastKey = 100.0f; // an invalid key
|
|
for (uint32_t kfIdx = 0, kfEnd = sortedKeyframes.Length();
|
|
kfIdx != kfEnd; ++kfIdx) {
|
|
KeyframeData &kf = sortedKeyframes[kfIdx];
|
|
if (!kf.mRule->Declaration()->HasProperty(prop)) {
|
|
continue;
|
|
}
|
|
if (kf.mKey == lastKey) {
|
|
// Replace previous occurrence of same key.
|
|
keyframesWithProperty[keyframesWithProperty.Length() - 1] = kfIdx;
|
|
} else {
|
|
keyframesWithProperty.AppendElement(kfIdx);
|
|
}
|
|
lastKey = kf.mKey;
|
|
}
|
|
|
|
AnimationProperty &propData = *destAnim->Properties().AppendElement();
|
|
propData.mProperty = prop;
|
|
|
|
KeyframeData *fromKeyframe = nullptr;
|
|
nsRefPtr<nsStyleContext> fromContext;
|
|
bool interpolated = true;
|
|
for (uint32_t wpIdx = 0, wpEnd = keyframesWithProperty.Length();
|
|
wpIdx != wpEnd; ++wpIdx) {
|
|
uint32_t kfIdx = keyframesWithProperty[wpIdx];
|
|
KeyframeData &toKeyframe = sortedKeyframes[kfIdx];
|
|
|
|
nsRefPtr<nsStyleContext> toContext =
|
|
resolvedStyles.Get(mPresContext, aStyleContext, toKeyframe.mRule);
|
|
|
|
if (fromKeyframe) {
|
|
interpolated = interpolated &&
|
|
BuildSegment(propData.mSegments, prop, src,
|
|
fromKeyframe->mKey, fromContext,
|
|
fromKeyframe->mRule->Declaration(),
|
|
toKeyframe.mKey, toContext);
|
|
} else {
|
|
if (toKeyframe.mKey != 0.0f) {
|
|
// There's no data for this property at 0%, so use the
|
|
// cascaded value above us.
|
|
if (!styleWithoutAnimation) {
|
|
styleWithoutAnimation = mPresContext->StyleSet()->
|
|
ResolveStyleWithoutAnimation(aTarget, aStyleContext,
|
|
eRestyle_AllHintsWithAnimations);
|
|
}
|
|
interpolated = interpolated &&
|
|
BuildSegment(propData.mSegments, prop, src,
|
|
0.0f, styleWithoutAnimation, nullptr,
|
|
toKeyframe.mKey, toContext);
|
|
}
|
|
}
|
|
|
|
fromContext = toContext;
|
|
fromKeyframe = &toKeyframe;
|
|
}
|
|
|
|
if (fromKeyframe->mKey != 1.0f) {
|
|
// There's no data for this property at 100%, so use the
|
|
// cascaded value above us.
|
|
if (!styleWithoutAnimation) {
|
|
styleWithoutAnimation = mPresContext->StyleSet()->
|
|
ResolveStyleWithoutAnimation(aTarget, aStyleContext,
|
|
eRestyle_AllHintsWithAnimations);
|
|
}
|
|
interpolated = interpolated &&
|
|
BuildSegment(propData.mSegments, prop, src,
|
|
fromKeyframe->mKey, fromContext,
|
|
fromKeyframe->mRule->Declaration(),
|
|
1.0f, styleWithoutAnimation);
|
|
}
|
|
|
|
// If we failed to build any segments due to inability to
|
|
// interpolate, remove the property from the animation. (It's not
|
|
// clear if this is the right thing to do -- we could run some of
|
|
// the segments, but it's really not clear whether we should skip
|
|
// values (which?) or skip segments, so best to skip the whole
|
|
// thing for now.)
|
|
if (!interpolated) {
|
|
destAnim->Properties().RemoveElementAt(
|
|
destAnim->Properties().Length() - 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsAnimationManager::BuildSegment(InfallibleTArray<AnimationPropertySegment>&
|
|
aSegments,
|
|
nsCSSProperty aProperty,
|
|
const StyleAnimation& aAnimation,
|
|
float aFromKey, nsStyleContext* aFromContext,
|
|
mozilla::css::Declaration* aFromDeclaration,
|
|
float aToKey, nsStyleContext* aToContext)
|
|
{
|
|
StyleAnimationValue fromValue, toValue, dummyValue;
|
|
if (!ExtractComputedValueForTransition(aProperty, aFromContext, fromValue) ||
|
|
!ExtractComputedValueForTransition(aProperty, aToContext, toValue) ||
|
|
// Check that we can interpolate between these values
|
|
// (If this is ever a performance problem, we could add a
|
|
// CanInterpolate method, but it seems fine for now.)
|
|
!StyleAnimationValue::Interpolate(aProperty, fromValue, toValue,
|
|
0.5, dummyValue)) {
|
|
return false;
|
|
}
|
|
|
|
AnimationPropertySegment &segment = *aSegments.AppendElement();
|
|
|
|
segment.mFromValue = fromValue;
|
|
segment.mToValue = toValue;
|
|
segment.mFromKey = aFromKey;
|
|
segment.mToKey = aToKey;
|
|
const nsTimingFunction *tf;
|
|
if (aFromDeclaration &&
|
|
aFromDeclaration->HasProperty(eCSSProperty_animation_timing_function)) {
|
|
tf = &aFromContext->StyleDisplay()->mAnimations[0].GetTimingFunction();
|
|
} else {
|
|
tf = &aAnimation.GetTimingFunction();
|
|
}
|
|
segment.mTimingFunction.Init(*tf);
|
|
|
|
return true;
|
|
}
|
|
|
|
/* virtual */ void
|
|
nsAnimationManager::WillRefresh(mozilla::TimeStamp aTime)
|
|
{
|
|
MOZ_ASSERT(mPresContext,
|
|
"refresh driver should not notify additional observers "
|
|
"after pres context has been destroyed");
|
|
if (!mPresContext->GetPresShell()) {
|
|
// Someone might be keeping mPresContext alive past the point
|
|
// where it has been torn down; don't bother doing anything in
|
|
// this case. But do get rid of all our transitions so we stop
|
|
// triggering refreshes.
|
|
RemoveAllElementCollections();
|
|
return;
|
|
}
|
|
|
|
FlushAnimations(Can_Throttle);
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::FlushAnimations(FlushFlags aFlags)
|
|
{
|
|
// FIXME: check that there's at least one style rule that's not
|
|
// in its "done" state, and if there isn't, remove ourselves from
|
|
// the refresh driver (but leave the animations!).
|
|
TimeStamp now = mPresContext->RefreshDriver()->MostRecentRefresh();
|
|
bool didThrottle = false;
|
|
for (PRCList *l = PR_LIST_HEAD(&mElementCollections);
|
|
l != &mElementCollections;
|
|
l = PR_NEXT_LINK(l)) {
|
|
AnimationPlayerCollection* collection =
|
|
static_cast<AnimationPlayerCollection*>(l);
|
|
collection->Tick();
|
|
bool canThrottleTick = aFlags == Can_Throttle &&
|
|
collection->CanPerformOnCompositorThread(
|
|
AnimationPlayerCollection::CanAnimateFlags(0)) &&
|
|
collection->CanThrottleAnimation(now);
|
|
|
|
nsRefPtr<css::AnimValuesStyleRule> oldStyleRule = collection->mStyleRule;
|
|
UpdateStyleAndEvents(collection, now, canThrottleTick
|
|
? EnsureStyleRule_IsThrottled
|
|
: EnsureStyleRule_IsNotThrottled);
|
|
if (oldStyleRule != collection->mStyleRule) {
|
|
collection->PostRestyleForAnimation(mPresContext);
|
|
} else {
|
|
didThrottle = true;
|
|
}
|
|
}
|
|
|
|
if (didThrottle) {
|
|
mPresContext->Document()->SetNeedStyleFlush();
|
|
}
|
|
|
|
DispatchEvents(); // may destroy us
|
|
}
|
|
|
|
void
|
|
nsAnimationManager::DoDispatchEvents()
|
|
{
|
|
EventArray events;
|
|
mPendingEvents.SwapElements(events);
|
|
for (uint32_t i = 0, i_end = events.Length(); i < i_end; ++i) {
|
|
AnimationEventInfo &info = events[i];
|
|
EventDispatcher::Dispatch(info.mElement, mPresContext, &info.mEvent);
|
|
|
|
if (!mPresContext) {
|
|
break;
|
|
}
|
|
}
|
|
}
|