This also moves the WithinEpsilonOf function from gfxPoint into
PointTyped, and changes call sites that are using
gfxPoint::Transform(Matrix4x4) to use Matrix4x4::TransformPoint(Point)
instead, which should be equivalent.
MozReview-Commit-ID: 3Z0bsU41rQt
This commit begins the work needed for tracking focus by creating two new classes,
FocusTarget and FocusState. FocusState is created and used by APZCTreeManager to
track the global focus information, while FocusTarget is created per layer tree and
sent to APZ with local focus information. Between the two we are able to figure out
what the correct scrollable layer is to use in response to a keyboard scroll.
See the comment in `FocusState.h` for more details on the architecture and things
needed in future patches to complete this.
MozReview-Commit-ID: F75VZv3i9U2
SupportsServoStyleBackend() uses methods in nsIDocument, so it would be more
straightforward to do that in UpdateStyleBackendType().
Also, call StyloEnabled() before doing other logic so that the warning about
"no docshell" won't show up when stylo is built but disabled.
MozReview-Commit-ID: 9ZUYatPBv1r
Functions like BuildDisplayListForStackingContext or BuildDisplayListForChild look
up EffectSet property several times in callees, such as IsTransformed() or
HasOpacity(), which is time wasting.
We should look up EffectSet just once, and pass the found one to all callees
that need it.
MozReview-Commit-ID: GZywm2UcpU7
If the percentage basis isn't provided it will be calculated from the ancestors
as before. Note that that algorithm is only valid if the frame's containing
block is the ancestor's content box, which isn't the case for grid items.
So grid layout MUST provide a percentage basis, although the given value may
be NS_UNCONSTRAINEDSIZE for either axis if the value is indefinite.
MozReview-Commit-ID: 7nvAuR43xfM
For Android we want to be able to set a global zoom factor that will scale any page where font inflation is not turned on.
Android makes the system font scale available as a float factor. For our purposes, converting this to a percentage based value and rounding to an integer is accurate enough and enables us to pass this value as a standard Gecko int preference. This means we can make use of the standard infrastructure for setting and retrieving Gecko-side preferences both from Java and JS (the latter during testing), as opposed to having to write custom JNI and C++/IDL helper functions.
To that effect, we implement a method for retrieving that setting via nsLayoutUtils, analogous to the current font inflation settings. Since we later want to clamp the effective text zoom resulting from that setting by zoom.minPercent and maxPercent, we add var caches for them in nsLayoutUtils as well.
MozReview-Commit-ID: Ler2YmwzImE
If we disable APZ on an individual scrollable element by setting the "disable APZ"
flag on the ScrollMetadata, we should also disable paint-skipping for that element.
If we don't do this, we end up in a situation where the APZ code is not applying
the async transform but is sending repaint requests expecting the main thread to
do repaints. Meanwhile the main-thread thinks that it can send empty transactions
and have APZ update the async transform (a.k.a. paint-skipping). So visually
neither APZ nor main-thread have an effect and the element doesn't appear to
scroll except with the tile-aligned displayport shifts. Disabling paint-skipping
on the element fixes the issue.
MozReview-Commit-ID: H4wpVLw8r8X
Each concrete class of imgIContainer is able to handle opacity already. All we
need to do is pass opacity value to them.
MozReview-Commit-ID: EMkLnG3YXA1
