This patch adds another method to AnimationPlayerCollection alongside
HasCurrentAnimations that returns true if there is a player in the collection
with current source content that targets the specified property.
At the same time it also makes the original HasCurrentAnimations a const method.
It's not the player that's "current" (a Web Animations term for an animation
that hasn't yet finished), but its source content, if any. This patch renames
the method on AnimationPlayer accordingly.
At the same time this patch moves the method to the header file since it's
quite simple and could possibly benefit from inlining.
This implements the bulk of the FontFace JS constructor, which parses
the descriptors passed in. We need a notion now of whether a FontFace is
"initialized", since the spec requires us to go through the event loop
before parsing the 'src' descriptor. So a couple of places now have to
check whether the FontFace is fully initialized, and we have a method to
inform the FontFaceSet when a FontFace becomes initialized, in case we
added it to the FontFaceSet before it was initialized (easy to do with
|document.fonts.add(new FontFace(...))|.
We add a third array on FontFaceSet, mOtherFaces, which stores
unconnected FontFace objects that have been added to the FontFaceSet. We
reflect them in the indexed properties and also create user font entries
for them.
Part 23 will actually allow us to add some of these FontFaces to
mOtherFaces.
This adds support for a CSS-connected FontFace to be disconnected from
its rule. This causes it to get its own copy of the descriptors on the
nsCSSFontFaceStyleDecl, and for the pointers between the FontFace and
the nsCSSFontFaceRule to be nulled out.
We start tracking now whether a given FontFace is in the FontFaceSet
(in the sense that it will appear on the DOM FontFaceSet object if we
inspect it with script). All FontFace objects created though, whether
they are currently "in" the FontFaceSet or not, are still tracked by the
FontFaceSet. We use the new mUnavailableFaces array on the FontFaceSet
for that.
We need to track these FontFaces that aren't in the FontFaceSet as
that's where we store their user font entry -- important if we call
load() on a FontFace before adding it to the FontFaceSet.
This changes InsertRule, which looked at the descriptors on an
nsCSSFontFaceRule to create a user font entry and add it to a family,
into InsertConnectedFontFace, which can do the same but for the FontFace
that reflects the rule.
Here we change FontFaceSet's records array to associate gfxUserFontEntry
pointers with FontFace pointers, rather than with nsCSSFontFaceRule
pointers. This will make it more uniform to handle both CSS-connected
and unconnected FontFace objects when rebuilding the user font entries
under UpdateRules.
How that we have a class named "FontFace", it's a bit confusing for some
of the gfxUserFontSet methods to have "FontFace" in their names, so I'm
renaming them to mention "UserFontEntry" instead.
These set the descriptors, but don't cause anything to update, just
like setting descriptors on an @font-face rule's style declaration
doesn't do anything yet.
We add an mDescriptors that will be used to store the descriptor values
of an unconnected FontFace object. For CSS-connected FontFace objects,
the descriptors are stored in the nsCSSFontFaceRule::mDecl.mDescriptors.
(Both of these use the same type, though, CSSFontFaceDescriptors.)
Ideally we could have the descriptors always stored on the FontFace,
and for the nsCSSFontFaceStyleDecl go and fetch them from the FontFace,
but it turned out to be impossible to ensure that a FontFace could be
created whenever a nsCSSFontFaceStyleDecl was cloned, since it needs
access to the window object to create the FontFace's promise objects!
We make gfxUserFontEntry::SetLoadState virtual so that we can hook into
changes and update FontFace::mStatus. We can't just reflect the
gfxUserFontEntry's value in FontFace::Status() since the spec has
requirements about when exactly the status is set.
This is a temporary measure until we support iterators on the
FontFaceSet; the spec does not expose FontFaces as indexed properties on
the FontFaceSet.
Every nsCSSFontFaceRule that is used will get a FontFace object to
reflect it in the FontFaceSet. Here we add storage on the
nsCSSFontFaceRule for its FontFace, although it will be the
FontFaceSet's responsibility to set it. We also add a static
constructor function on FontFace to create one that reflects a rule.
We can't make FontFace inherit from gfxUserFontEntry, since the former
is cycle collected. So instead, we have a small class that inherits
from it that will override its virtual methods and forward things on to
the FontFace object.
We make gfxUserFontSet::CreateFontFace virtual so we can override it to
produce instances of our gfxUserFontEntry subclass.
This (a) moves ownership of the gfxUserFontSet into FontFaceSet, (b) moves
nearly all of the functionality of nsUserFontSet into FontFaceSet, and (c)
adds a class that inherits from gfxUserFontSet so that we can override some
of its virtual functions and delegate them to the FontFaceSet.
The MOZ_DEBUG_RESTYLE_STRUCTS environment variable can be set to a comma-
separated list of style struct names. When restyle logging is enabled,
this will cause the style context tree -- showing cached style struct
pointers for those structs specified -- to be logged before each
individual restyle is processed. It will also show the struct pointer
values involved when swapping structs between style contexts.
For example, set MOZ_DEBUG_RESTYLE_STRUCTS=Font,UserInterface to show
the cached nsStyleFont and nsStyleUserInterface pointers on the style
contexts involved in the restyle process.
Set the MOZ_DEBUG_RESTYLE environment variable and every restyle will have
detailed logging printed to stderr. By default, restyles for animations are
not logged; you can include them by also setting MOZ_DEBUG_RESTYLE_ANIMATIONS.
If you wish to limit restyle logging to a particular change, you can call
nsPresContext::StartRestyleLogging() and nsPresContext::StopRestyleLogging()
at appropriate points. (You might want to add a couple of helper methods
temporarily on nsIDocument and then expose them to your page with Web IDL
to make them easier to call.) You do not need to have set MOZ_DEBUG_RESTYLE
for this to work.
This patch takes the StickyTimeDuration defined in the previous patch and
uses it within the calculation of animation timing for parameters that are
expected to be +/- Forever.
Set the MOZ_DEBUG_RESTYLE environment variable and every restyle will have
detailed logging printed to stderr. By default, restyles for animations are
not logged; you can include them by also setting MOZ_DEBUG_RESTYLE_ANIMATIONS.
If you wish to limit restyle logging to a particular change, you can call
nsPresContext::StartRestyleLogging() and nsPresContext::StopRestyleLogging()
at appropriate points. (You might want to add a couple of helper methods
temporarily on nsIDocument and then expose them to your page with Web IDL
to make them easier to call.) You do not need to have set MOZ_DEBUG_RESTYLE
for this to work.
This is an additional bit on nsRestyleHint that says that the restyling
operation should also perform all the work needed to switch between
style-without-animation and style-with-animation (based on
nsPresContext::IsProcessingAnimationStyleChange). These concepts will
go away in bug 960465.
Note that we don't want this behavior for the animation-only style
update code (bug 996796, etc.), and I wanted to make this explicit so
that it was clear when it was happening, and so that it was clear what
code should be removed when we git rid of it.
This is the workaround needed to land bug 977991 prior to bug 960465.
(I think there's also a minor dependency in the other direction, so we
need a workaround one way or the other.)
Note that this depends on bug 1057231.
This allows posting a restyle that says that only the rule(s) from the
StyleAttrSheet cascade level will be replaced, which avoids running
selector matching.
Part 4 will ensure that we only invoke this code for element styles (and
not pseudo-element or anonymous box styles). Despite that, I prefer
having the runtime check here as well given that it's a very simple way
to ensure we don't do something silly that might have security
implications.
This allows nsStyleSet::RuleNodeWithReplacement to call it without
constructing an entire (and unnecessary) ElementRuleProcessorData, which
will happen in patch 3.
Eric Rahm
Morris Tseng
Ehsan Akhgari
Peter Van der Beken
Wes Kocher
Cameron McCormack
Trevor Saunders
Jonathan Kew
Ryan VanderMeulen
Boris Zbarsky
Max Vujovic
Ed Morley
Christoph Kerschbaumer
L. David Baron
Xidorn Quan
David Zbarsky
Brian Birtles
Robert Longson
Dirk Schulze
Phil Ringnalda
Carsten "Tomcat" Book
John Daggett
Rik Cabanier
Tim Nguyen
Daniel Holbert
Markus Stange
Gijs Kruitbosch