This fixes a bug in line splitting caused by the following actions when `LineBreaker::split_line_at_last_known_good_position` is called:
1. Push some number of previous fragments onto the front of the work list.
2. Push the current fragment back onto the front work list.
This resulted in the work list being out of order. The correct order is action 2 followed by action 1. Fixes#9830. r? @pcwalton
Source-Repo: https://github.com/servo/servo
Source-Revision: 059edc3287909ce705ba90804c778ee50f1e157e
Flat display lists were a 2x regression on the spheres demo. This patch series fixes that.
See the individual commits for more details.
r? @mrobinson
Source-Repo: https://github.com/servo/servo
Source-Revision: 55fc48e4c46917a0f036d0054fac296bb5719434
Instead of producing a tree of stacking contexts, display list
generation now produces a flat list of display items and a tree of
stacking contexts. This will eventually allow display list construction
to produce and modify WebRender vertex buffers directly, removing the
overhead of display list conversion. This change also moves
layerization of the display list to the paint thread, since it isn't
currently useful for WebRender.
To accomplish this, display list generation now takes three passes of
the flow tree:
1. Calculation of absolute positions.
2. Collection of a tree of stacking contexts.
3. Creation of a list of display items.
After collection of display items, they are sorted based upon the index
of their parent stacking contexts and their position in CSS 2.1
Appendeix E stacking order.
This is a big change, but it actually simplifies display list generation.
Source-Repo: https://github.com/servo/servo
Source-Revision: 62814f7cb486bc267a796b7ce58c51d59240fad0
This fixes rounding accuracy issues that could result in layout producing results off by a small number of Au.
Source-Repo: https://github.com/servo/servo
Source-Revision: 83be388f59b1bb4dfccc6ccd89022caa13b37a94
Now clean up damage on all fragments that belong to a Flow. This ensures
that damage does not re-propagate up to the parent Flow from the
Fragments. It also means that the flow tree dump should show a more
accurate picture of the state of the flow tree.
Source-Repo: https://github.com/servo/servo
Source-Revision: 1436ee5afab4ede68ab834c7d6368a7d45ede7ac
Use the PrintTree utility to improve the readability of flow tree
dumps. Blocks and fragments are now split over two dump levels, because
otherwise they are impenetrable. Also start printing the restyle damage of
fragments.
Source-Repo: https://github.com/servo/servo
Source-Revision: a2330f494316926dca9f64431d8357a093143d7d
Also include absolutely positioned elements in the overflow rect calculation.
Fixes#7797.
Source-Repo: https://github.com/servo/servo
Source-Revision: ca56ebbb09f3c258d10e7a7fa276d42fe258d893
Canvas is currently given a layer at the stacking context level.
Instead it's DisplayItem should be given a layer directly. This fixes
painting order issues where canvases are painted on top of other
positioned content that is later in tree order. It always simplifies
the code a bit.
Source-Repo: https://github.com/servo/servo
Source-Revision: 22a6884a671da0434fe2b3bf30f50b9133d4c70b
Instead of always promoting iframes to StackingContexts, integrate them
into the display list. This prevents stacking bugs when
non-stacking-context elements should be drawn on top of iframes.
To accomplish this, we add another step to ordering layer creation,
where LayeredItems in the DisplayList are added to layers described by
the LayerInfo structures collected at the end of the DisplayList.
Unlayered items that follow these layered items are added to
synthesized layers.
Another result of this change is that iframe layers can be positioned
directly at the location of the iframe fragment, eliminating the need
for the SubpageLayerInfo struct entirely.
Iframes are the first type of content treated this way, but this change
opens up the possibility to properly order canvas and all other layered
content that does not create a stacking context.
Source-Repo: https://github.com/servo/servo
Source-Revision: 11d23a41b31c2b2846d1e9c6b40e87ba7e2a095f
This is mostly straightforward. I had to modify a couple of places
which were accidentally discarding whitespace.
Fixes#1513.
This fixes some relevant tests from the CSS testsuite... but a lot of
them are either manual, or don't pass because of unrelated issues. (For
example, white-space-mixed-002 renders correctly, but
white-space-mixed-002-ref doesn't because of a float bug.)
I'd appreciate any suggestions for how to go about adding tests for this.
Source-Repo: https://github.com/servo/servo
Source-Revision: c3ab71109ee2ffcc31b40890f4c6739d8f5b1333
This adds -servo-left and -servo-right to complement -servo-center.
~~This intentionally doesn't try to address issue #7301.~~ Commit added to address #7301.
Source-Repo: https://github.com/servo/servo
Source-Revision: ab42ca42967354cba08d1dca83aa99a637bd7a6b
The old code that attempted to do this during layout wasn't able to work
for multiple reasons: it couldn't know where the iframe was going to be
on the page (because of nested iframes), and at the time it was building
the display list for a fragment it couldn't know where that fragment was
going to be in page coordinates.
This patch rewrites that code so that only the size of an iframe is
determined during layout, and the position is determined by the
compositor. Layout layerizes iframes and marks the iframe layers with
the appropriate subpage ID so that the compositor can place them
correctly.
Closes#7377.
Source-Repo: https://github.com/servo/servo
Source-Revision: a0cb657fe80859dd8862361631268479d1045432
This is a direct extract from my abandoned PR for a lint (#7546), along with some rather clumsy modifications (only on `components/script/dom/mod.rs` and `components/style/lib.rs`), because I had to sort some of the files again to make peace with tidy, which hasn't been educated about sorting yet!
Source-Repo: https://github.com/servo/servo
Source-Revision: a7208869f2903e36f9b2f540b55b50283d7df466
Removes the long space before the site-specific drop-down in the Google SERPs.
r? @glennw
Source-Repo: https://github.com/servo/servo
Source-Revision: aeb8dce2d914808e4cdb8589d19ee9968897ed94
Elided almost all the lifetimes and removed needless returns. Mostly done by sed + manual fixes.
r? @nox
Source-Repo: https://github.com/servo/servo
Source-Revision: c2c2646d37614ece5869af861993c3d619f6e003
* The code that attempted to strip out borders that span multiple
fragments in the same element could go wrong if fragments were
stripped out due to text clumping or whitespace stripping. This patch
rewrites that code to maintain flags in the inline fragment context
specifying whether the node is the beginning or end of the element.
Not only is this easier to maintain, it's closer in spirit to what roc
originally suggested two years ago: it's isomorphic to "begin element,
end element" markers for inline layout.
* Padding and margins for spans containing inline-blocks are now
properly handled via a division of labor between the `InlineBlock`
fragment and the `BlockFlow` that represents the inline-block.
* Unscanned text fragments may not be joined together into a text run if
borders, padding, or margins separate them.
Because Servo now matches the rendering of Gecko and WebKit on the
`input_button_margins_a` reftest, I had to modify it to add some
vertical alignment.
The combined effect of all of these fixes places "Advertising" on the
right place on google.com.
r? @mbrubeck
Source-Repo: https://github.com/servo/servo
Source-Revision: 8bbace7815b489e1b87df2ec496e65e78721d929
This is #7185 with one commit added to make it build merged with master, which got support for the `ch` unit in the meantime.
Source-Repo: https://github.com/servo/servo
Source-Revision: a547ae6826cf171c42b090408a4c20d58d1829d9
Improves the position of the down arrows on google.com SERPs.
r? @mbrubeck
Source-Repo: https://github.com/servo/servo
Source-Revision: e46499a5dfd9189fc439c228d9a5fe23dfec0d7d
This necessitated changing overflow to be calculated by the parent flow
if relatively positioned children are present. That is because the
overflow regions cannot be calculated without knowing relative offsets,
which themselves cannot be calculated without knowing the parent size
(because of percentages). To accomplish this without sacrificing
parallelism in the non-relative case, this patch splits overflow into
"early" and "late" computation. Late overflow computation cannot be
parallelized across children, while early overflow computation can.
Makes the "Apple Music" text show up over the full-bleed promotional
background on apple.com.
r? @SimonSapin -- would appreciate a look over the iframe test case that was changed.
Source-Repo: https://github.com/servo/servo
Source-Revision: dcaf66397a06246b9b4fdca3a10af1508a11f1e8
and `for foo in bar.iter_mut(), and for foo in bar.into_iter()
(continuation of #7197)
Source-Repo: https://github.com/servo/servo
Source-Revision: 0d6d6a05009606dfbbfc9765d7dc2c745c18f6a5
Several issues are addressed in this commit:
* Inline flows now bubble up their absolute descendants instead of
making the inline flow the containing block for them. (In the future,
we will need to make the inline flow *sometimes* be the containing
block for them, but for now it improves sites to unconditionally
bubble up.)
* Fragments now look at their inline fragment context to determine
whether they are positioned.
* Inline flows now push the stacking-relative position of the absolute
containing block down to their inline-block fragments.
* Inline absolute hypothetical fragments can be containing blocks.
* Fixes the logic in
`containing_block_range_for_flow_surrounding_fragment_at_index`. The
condition to determine whether fragments are positioned was inverted!
* `Descendants`/`AbsDescendants` has been refactored in order to become
more friendly to inline absolute containing blocks in the future.
Improves the inline position of the green drop-down arrow in the Google
SERPs. (The block position is still wrong.)
r? @mbrubeck
Source-Repo: https://github.com/servo/servo
Source-Revision: d654841288ad6c7d4f8d7da3c68d04ef7df2c241
Expands on the work by @wilmoz and cleans up the existing errors. Closes#7180. Closes#7111.
Source-Repo: https://github.com/servo/servo
Source-Revision: e74825f9fde8e222f4ba9bb24b2c2a3864c73e5f
This patch makes Servo unconditionally strip whitespace before text run
scanning (assuming that the `white-space` property allows it). Whitespace
stripping during reflow is now only used for handling whitespace at the ends of
lines; reflow now never attempts to handle ignorable whitespace.
Many CSS tests pass now. There are some new failures, however.
The following reference tests now fail due to a pre-existing bug whereby
whitespace is used to calculate the position of inline hypothetical boxes for
elements with `display: inline; position: absolute`:
* `absolute-replaced-height-036.htm`
* `vertical-align-sub-001.htm`
* `vertical-align-super-001.htm`
The following reference tests fail due to a pre-existing bug whereby we don't
handle `font-size: 0` properly in inline reflow:
* `font-size-zero-1.htm`
* `font-size-zero-2.htm`
The following reference test fails due to the fact that it relied on our
incorrect insertion of whitespace to make room for the black background:
* `inline-formatting-context-007.htm`
r? @mbrubeck
Source-Repo: https://github.com/servo/servo
Source-Revision: 7dc83e7820df43b1b617ae8dcf661398b0bd0842
Known issues:
* Display list optimization can sometimes optimize out elements that
should be shown. This affects the Enyo demo.
* The `overflow: scroll` container doesn't clip the inner layer properly
when borders, border radius, etc. are present.
* `overflow-x: scroll` and `overflow-y: scroll` don't work individually;
elements are scrolled all at once.
Note that multiple layers per stacking context aren't needed for the Enyo demo; rather the issue is that the height of the main area is being calculated incorrectly. (It looks like JS is measuring the height and poking in an explicit value that is too tall.)
r? @glennw
Source-Repo: https://github.com/servo/servo
Source-Revision: b05b02e11fb849e1f0153d009d8fcf0501ace8dc
Fixes overflowing tables on Wikipedia.
This infrastructure should form the basis of our fix for inline layout
of fragments that don't themselves constitute valid split points. That
will require some more work, however.
r? @mbrubeck
Source-Repo: https://github.com/servo/servo
Source-Revision: d07cde5efccfdd1aee4456a85e51ec0d0613c4e4
It's not possible to correctly determine during the css cascade whether the container height
is explicitly specified. Additionally, the spec https://drafts.csswg.org/css2/visudet.html#the-height-property says this should affect the *used* height, rather than the computed height.
This significantly improves the layout in #6643.
Source-Repo: https://github.com/servo/servo
Source-Revision: 028707f5cd3263fd1476669207f67d5b9d5d4806
StrExt::slice_chars is deprecated and will be removed in Rust. This
lifts the implementation from Rust libstd and puts it in util::str.
This fixes a bunch of deprecation warnings in Servo.
Source-Repo: https://github.com/servo/servo
Source-Revision: a54404c92180b839d2cf089d9ec9a6afe8bd5ba3
This re-orders text according to the Unicode bidirectional layout algorithm, using the [unicode-bidi](https://github.com/mbrubeck/unicode-bidi) crate. It uses the natural order of the text based on Unicode character properties and the CSS `direction` property.
This does not yet support the CSS `unicode-bidi` property or the HTML `dir` attribute, but these should be straightforward to add.
r? @pcwalton. Also depends on servo/unicode-bidi#4.
Source-Repo: https://github.com/servo/servo
Source-Revision: d3a36fafd948d7b9366feeca44f9ca9ad012d706
Fixes jumpiness on lots of Web sites.
r? @mbrubeck
Source-Repo: https://github.com/servo/servo
Source-Revision: bbcd42773342a587a8515f34bdc3ca69a380c0a8
