Added a data member to nsIPresShell to store the visual viewport offset. APZ
will update the visual viewport offset in the presShell for root scroll frames
on every repaint request.
MozReview-Commit-ID: Ksou43hrE6H
--HG--
extra : rebase_source : 812c88efc7556c4bff2a62834cfaaec6e6945093
This change has WrClipId contain the ClipId type (except for clip
chains, which are handled separately) in the least significant bit of
the size_t. On 32-bit systems this limits the number of clip and spatial
nodes to 2,147,483,648 which is likely more than what WebRender can
handle.
MozReview-Commit-ID: 8ohMKqTZcKT
--HG--
extra : rebase_source : cce763be7c0637bf97e96c23f8dba5aeff34baaf
In some cases we get a gecko display list that looks like this:
WrapList with asr(<A>, <B>)
Item with asr (<B>) and clipchain(<something> [A])
In this case, we would initialize the WebRenderLayerScrollData for the
nested item using a stop-at ancestor of A (because that was the leafmost
ASR from the containing WrapList) but the item itself has an ASR of B,
which is an ancestor of A. So when walking up from B we'd never hit the
stop-at ancestor, and so we'd end up duplicating metrics from the
containing WRLSD onto the nested WRLSD. This generated an assertion
failure in the APZ code.
This patch detects this scenario and skips adding metrics on the nested
WRLSD. This produces an APZ tree equivalent to what the non-WebRender
path would produce.
MozReview-Commit-ID: 8eo6pzXXKBd
--HG--
extra : rebase_source : 0581c54c4d9fa6ca08249e42b306c7155022bec7
Ensures that APZ correctly updates the layout viewport offset when the visual
viewport exceeds the boundaries of the layout viewport.
Includes changes to APZCPinchTester::GetPinchableFrameMetrics to correct the
offset of the composition bounds (which should always be (0, 0) for the
RCD-RSF) and fixes to impacted test cases.
MozReview-Commit-ID: I3hTx9kCjEP
--HG--
extra : rebase_source : 0758399565d0086f8dc7d56881d912dbc0560a04
There are 3 main components to this change:
a) Store the origin of the layout viewport in APZ (until now we only stored
it's size). This required updating the offset stored in mViewport, which
was previously (0, 0).
b) Adjust the layout viewport in APZ each time the visual viewport exceeds
the bounds of the layout viewport.
c) Update the main thread to store the layout viewport offset for the
RCD-RSF (currently it uses the layout viewport offset for overflow:hidden
pages, and the visual viewport offset otherwise).
MozReview-Commit-ID: 7AD8wvthh2m
--HG--
extra : rebase_source : df8704146740f4b2522c80b20b603617993b6c83
For example, if we set a transform to rotate3d(0, 0, 1e50, 45deg), the
expected normalized rotate axis is (0, 0, 1).
However, the length is larger than the maximum of float, so the actual value is
(0/inf, 0/inf, 1e50/inf) == (0, 0, 0). Therefore, we scale the vector before
doing normalization to avoid getting a zero vector.
MozReview-Commit-ID: 5LUDWD4RuNj
--HG--
extra : rebase_source : eb82f0b3979bf6ea3cd11b643ebb30a49edc24f8
Noemi Erli
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