This patch is a fairly minimal rename of the AnimationPlayer interface. It
leaves a bunch of local variables and helper classes still using the word
"player". These will be addressed in subsequent patches that don't require DOM
peer review.
The failure was:
TEST-UNEXPECTED-FAIL | gfx/tests/mochitest/test_acceleration.html | Acceleration enabled on x86-64 OS X - didn't expect 0, but got it
I'm guessing this is because we're calling GetLayerManager earlier than
we were before.
CLOSED TREE
This moves the test for whether off-main-thread compositor is enabled
*earlier* in CanPerformOnCompositorThread, since
CanAnimatePropertyOnCompositor is called only from
CanPerformOnCompositorThread. This change means we're using a more
accurate test for whether we actually have off-main-thread compositing
than the pref, since in some cases we won't use off-main-thread
compositing for certain widgets (e.g., transparent widgets on Windows)
even when the pref is enabled.
This patch also tightens up a one or two references to 'target effect' replacing
them with just 'effect'. This is because 'target effect' is longer and easily
confused with 'target element'. 'effect' should be sufficient. 'target element'
is a term from the Web Animations specification and in that context, simply
referring to the 'effect' would sound a little odd.
There are still some other references to "source" in AnimationPlayer such as
HasInPlayerSource and UpdateSourceContent. These are renamed in a subsequent
patch (that doesn't require DOM peer review).
We define KeyframeEffectReadonly in KeyframeEffect.cpp since Web Animations also
defines KeyframeEffect and when we come to implement that I expect we'll define
it in the same class, maybe even using the same object.
This patch also adds a few missing includes in places where
KeyframeEffectReadonly is used so that we're not just cargo-culting it in.
Typically when GetAnimationRule is called, at least for CSS Animations, the
animation style rule will have been refreshed. However, in some cases such as
when the Web Animations API is used, the style rule will be marked as needing
to be refreshed outside of the usual flow. This rule will be refreshed when
nsAnimationManager::WillRefresh flushes animations but if the refresh driver
for the chrome document fires first, we will visit GetAnimationRule before
this happens.
This patch removes the assertion that expects animations to have been
refreshed by the time we reach GetAnimationRule causing it to update
the animation style rule as necessary.
This patch adds an options flag to GetAnimationsForCompositor for two reasons.
a) We want to reuse this functionality in nsLayoutUtils.cpp rather than
duplicating the same logic. To do that and maintain the existing behavior,
however, we need to *not* update the active layer tracker when calling this
from nsLayoutUtils.cpp.
b) It's surprising that GetAnimationsForCompositor also has this side effect of
updating the active layer tracker. Adding this as an option makes it clear at
the call site that this is what will happen.
This saves some extra work that we don't need to do.
Mechanically, the patch moves a chunk of code that is around the last
part of the function and converts it to an early return that's slightly
earlier than that last part, thus also including the skipping of the
throttling checks in what we skip for the early return.
I want to do this here since patch 9 introduces a new call to
EnsureStyleRuleFor.
This avoids some extra work that was added in bug 1125455 now that we
have a mechanism for detecting when animations start and stop being in
effect (introduced in patch 7).
This is also needed to prevent infinite recursion in patch 9.
This does somewhat less work than PostRestyleForAnimation, although I
believe PostRestyleForAnimation would be a sufficient alternative.
This is used in patch 6.
This patch renames the confusing IsRunning method since IsRunning() is *not*
the same as (PlayState() == AnimationPlayState::Running). It also removes
the old definition to make better re-use of PlayState() and IsInPlay().
In preparation for introducing IsInPlay (where "in play" is a term in the Web
Animations spec), this patch aligns the existing IsCurrent with the definition
in the spec that says an animation effect is only current if it is attached
to an animation (player in our current naming) that is not finished. In order
to ensure that we need to pass the animation/player into the method.
This actually changes the behavior of IsCurrent since now we will return false
for animations that are finished. As far as I can tell, all the call sites that
are requesting current animations should only be concerned with animations that
are actually running. If not, they need to be adjusted to look for animations
that are either current or in effect.
Typically when GetAnimationRule is called, at least for CSS Animations, the
animation style rule will have been refreshed. However, in some cases such as
when the Web Animations API is used, the style rule will be marked as needing
to be refreshed outside of the usual flow. This rule will be refreshed when
nsAnimationManager::WillRefresh flushes animations but if the refresh driver
for the chrome document fires first, we will visit GetAnimationRule before
this happens.
This patch removes the assertion that expects animations to have been
refreshed by the time we reach GetAnimationRule causing it to update
the animation style rule as necessary.
Note that this means that when we start transitions, we post restyles
that are processed during the current restyling operation, rather than
in a later phase. This depends on patch 11, which makes the transition
manager skip style changes that it posts while starting transitions, to
ensure that this doesn't lead to an infinite loop. This also depends on
patch 16, which only consumes restyle data for the primary frame, to
ensure that the animation restyles posted are processed properly. It
also depends on patch 14, which makes us retain data on finished
transitions, to avoid triggering extra transitions on descendants when
both an ancestor and a descendant transition an inherited property, and
the descendant does so faster.
This fixes a known failure in layout/style/test/test_animations.html and
test_animations_omta.html (as visible in the patch). I believe this is
because this patch changes us to compute keyframe values for animations
on top of a style context *with* animation data rather than one without,
which means what we're computing them on top of changes each time. (The
purpose of patch 3 was to avoid this in the case where avoiding it
matters, i.e., implicit 0% and 100% keyframes.)
We often set mStyleRuleRefreshTime to null to ensure styles get updated.
However, CanThrottleTransformChanges doesn't check for this case and blindly
does subtraction using this value.
Until now we've got away with this but now that we set mStyleRuleRefreshTime to
null when making changes via the API this case crops up in different
circumstances and we can trip over it.
This patch simply adds a null check before using mStyleRuleRefreshTime in
CanThrottleTransformChanges. All other cases where we operate on
mStyleRuleRefreshTime check for null.
Now that CheckNeedsRefresh is a member of the base class,
CommonAnimationManager, we no longer need to rely on callers of
AnimationPlayerCollection::EnsureStyleRuleFor to remember to call this method
but can do it automatically.
In order to add AnimationPlayerCollection::NotifyPlayerUpdated, collections
need a way of updating their managers to inform them that their mNeedsRefreshes
flag has changed and hence the manager may need to resume observing the refresh
driver.
Currently, only nsAnimationManager makes use of mNeedsRefreshes and provides
a CheckNeedsRefresh method. In order to allow AnimationPlayerCollection to
operate independently of the type of manager it is attached to (and because
there's a lot of similar code here that we eventually want to move to a common
manager anyway), this patch moves CheckNeedsRefreshes and associated
machinery to CommonAnimationManager.
I originally wrote this to see if it would fix bug 1086937, but it
didn't.
Note that this conflicts a bit with the patch in bug 1085769; whoever
lands second will have some merging (though it shouldn't be difficult).
The updating of the style rule is needed as part of the animation-only
style update, but it shouldn't be in the general restyling code, so it
has moved there.
This patch extracts the logic for calculating animation styles from
AnimationPlayerCollection and puts the bulk of it into the Animation objects.
Some of the initial logic surrounding the animation player state (e.g. is it
paused or not, etc.) is put into AnimationPlayer.
In future we may shift this logic even further down to the AnimationEffect
objects but currently we don't create such objects unless necessary.
