Dynamic changes are handled correctly because content property changes already
cause a reframe.
This implements the same bits as Blink / WebKit do (single content item which is
an image, otherwise gets ignored), except for the edge cases where you use this
on an image.
In order to handle the edge cases right, we completely isolate the
nsImageLoadingContent usage based on `mKind`.
Blink's and WebKit's behavior there makes no sense and it's erratic, what I
implemented is consistent (we apply to images as long as they don't generate a
box, and we don't look at alt text or broken icons), though I'll update to
whatever the WG decides in https://github.com/w3c/csswg-drafts/issues/2831 /
https://github.com/w3c/csswg-drafts/issues/2832.
I don't think it matters in terms of web compat in any case.
MozReview-Commit-ID: JUurhC60hWr
When computing image to layout transforms for invalidation, use the actual
intrinsic size of the source image, instead of the layout intrinsic size, which
may be scaled by ResponsiveImageSelector since bug 1149357.
I have absolutely no idea how to write a test for this, suggestions welcome.
MozReview-Commit-ID: LP6C9fSvMi2
GCC doesn't like StyleComplexColor with constructor in an anonymous
struct in an anonymous union. Replace the use of a union to access
`mBorder[..]Color` fields as an array with an accessor methods.
MozReview-Commit-ID: 1Wulh1qKYCZ
The methods where it's used don't run from reflow (they're image notifications
that run off runnables and such), so should be an idempotent change.
MozReview-Commit-ID: LdmSOcKDdw1
The frame is notified via its mListener, which is an observer of the
nsImageLoadingContent (mContent).
This last one only notifies for the current and pending requests, otherwise it's
a bug we need to fix there, not wallpaper here, since that'd mean that we forgot
to cancel the previous request. Added assertions to that effect.
Notify() is only called with the this object as a first argument from
imgRequestProxy, so it'd better be non-null, too.
MozReview-Commit-ID: DHaOLph2EAo
So that the imageLoader code is all grouped together. LoadIcons should probably
be a static, and the change shouldn't have any observable behavior.
MozReview-Commit-ID: Anxe8c5OfLe
Before that we were not notifying the image frame in any way if we ended up not
doing a load, and we were instead relying on the reflow the viewport resize
caused to get the new density in ComputeSize from the content node (but nowhere
else, since that's the bug part 1 fixes).
This was generally unsound, since you can stash random media in a sizes=
attribute, which don't necessarily needs to cause a reflow.
Now we need to notify necessarily because nsImageFrame stores the adjusted
intrinsic size.
mCurrentDensity could also get out of sync as well, when the selected image
density changed, but we ended up returning early because our source hadn't
change in the first early exit.
This patch moves us to a model where we don't re-trigger loads for density
changes if the source doesn't change (unless we pass aAlwaysLoad when we need
to, per spec).
This matches our previous behavior (without the bugginess of not updating the
intrinsic size), and also Chromium, at least.
This changes behavior in one case, which is when we don't load the same source
node, but we have the same source URL, and the density does change. This could
happen with <picture> and two <source>s with same source and different media and
sizes. This makes our behavior consistent with the behavior we have when both
the source and the density doesn't change.
Blink and WebKit do trigger a second image load both when the source changes
without changing density and when density changes. I'll file a spec issue, since
per:
https://html.spec.whatwg.org/#reacting-to-environment-changes
We should be triggering the load when the density changes but the source
doesn't as well, but no UA does that.
I filed https://github.com/whatwg/html/issues/3709 with a little summary of the
situation and what I think the behavior should be (which is what this patch
implements). That being said, I'll update the impl if the spec people think
otherwise :).
MozReview-Commit-ID: Eqy16ygHRLo
Only doing it in ComputeSize (via GetNaturalSize) is unsound, and the rest of
the users of mIntrinsicSize definitely do need scaling accounted for.
Move the adjustment to nsImageFrame for two reasons:
* Prevents adding more dependencies from nsIImageLoadingContent, which
otherwise would need to go away anyway in bug 215083.
* Avoids having to duplicate the image orientation logic, since mImage is
already an OrientedImage if needed.
MozReview-Commit-ID: EA0n0TctZhN
This patch basically does:
* remove StyleSetHandle and its corresponding files
* revisit #includes of related header files and change correspondingly
* change nsIPresShell::mStyleSet to be UniquePtr<ServoStyleSet>
* change the creating path of ServoStyleSet to pass UniquePtr
* change other mentions of StyleSetHandle to ServoStyleSet*
* remove AsServo() calls on ServoStyleSet
Some unfortunate bits:
* some methods of (Servo)StyleSet only accepts ServoStyleSheet while
many places call into the methods with StyleSheet, so there are many
->AsServo() added to sheets
MozReview-Commit-ID: K4zYnuhOurA
Currently we can only have one type of WebRenderUserData on an Item. We already
have a hash table of WebRenderUserData so it's not hard to include type in the
hash to support one per type.
MozReview-Commit-ID: geJ0BeWv8b
If an image container is empty, it will not produce an image key for use
with WebRender. This is generally not a sign of failure because the
producer likely has yet to populate the container with data. As such, we
should not immediately attempt to fallback. In fact, fallback can make
things worse in this situation, as we will create an image client to
send over the data, but then find that there is no data to share (or
find that there is, due to a race with the producer thread, and use
image clients when we could use shared surfaces).
Prior to bug 1368776, when no surface was obtained for the container, no
container was returned. Since we prefer an empty image container with
WebRender to avoid fallback, this was changed, but regressed
non-WebRender behaviour. Now on the non-WebRender path, we check if
there is anything in the container before accepting it.
This breaks rendering when we try do a sync decode paint since we might not have created the nsDisplayImage/nsDisplayBackgroundImage yet (or cached the empty size) and so we never get to the actual paint call.
