| Commit message (Collapse) | Author | Age | Files | Lines |
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This looks to have originally been implemented due to missing functionality in the headers crate, which has since been added and released.
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(#30034)
Calculating the max-content size of a block container may add the outer
max-content sizes of multiple children. The problem is that the outer
size may be negative (due to margins), producing an incorrect result.
In particular, it could happen that the max-content size was 50-25=25,
but the min-content size would just take the maximum and be 50, which
doesn't make sense.
Therefore, this patch floors the size of all children by 0. This seems
to match Blink. Firefox and WebKit don't floor in some cases, but then
the result seems suboptimal to me. Note that there is no spec for this,
see https://github.com/w3c/csswg-drafts/issues/9120 for details.
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Just use Clear instead, they have the same values.
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Since #29950, unit tests were only running with the legacy layout, and
there was no way to run them for layout 2020.
This patch makes './mach test-unit' run unit tests for both.
Also doing some changes so that the layout 2020 floats.rs tests compile.
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It was useful when it had 3 callers, but #29977 removed 2 of them.
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These are no longer used and some of them no longer make sense with
WebRender.
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* compositing: rename WindowEvent to EmbedderEvent
* winit: rename winit_event_to_{servo → embedder}_event
* winit: rename ServoEvent::Awakened to WakerEvent
* winit: document App::handle_events and rename locals
* servo: rename Servo.embedder_events to messages_for_embedder
* winit: rustdoc link to EmbedderEvent
* winit: use new name queue_embedder_events_for_winit_event
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Signed-off-by: Martin Robinson <mrobinson@igalia.com>
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* Add initial support for css-text-3 whitespace handling
This adds initial support for whitespace handling from the CSS
specification for Layout 2020. In general, the basics are covered. Since
test output is very sensitive to whitespace handling, this change
incorporates several fixes:
1. Whitespace is collapsed according to the Phase 1 rules of the
specification, though language-specific unbreaking rules are not
handled properly yet.
2. Whitespace is mostly trimmed and positioned according to the Phase 2
rules, but full support for removing whitespace at the end of lines
is pending on a temporary data structure to hold lines under
construction.
3. Completely empty box fragments left over immediately after line
breaks are now trimmed from the fragment tree.
4. This change tries to detect when an inline formatting context
collapses through.
Fixes #29994.
Co-authored-by: Mukilan Thiyagarajan <me@mukilan.in>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
* Update test results
---------
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Mukilan Thiyagarajan <me@mukilan.in>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
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(#30012)
A block that establishes an independent formatting context is placed
next to previous floats, so we should add their sizes when computing
the intrinsic contribution of the parent block container.
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Co-authored-by: Gregory Terzian <gterzian@users.noreply.github.com>
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Remove rayon_croissant and refactor the way that information about
floats in flows bubbles up. This simplifies the code a good deal and
lets us take advantage of some more optimized functions provided by
rayon. This removes 2 crates from the dependency tree.
In addition, this allows avoiding passing `contains_floats` up from
every box tree construction function. This makes things simpler, but
also opens up the possibility of passing more of these flags up in the
future (such as `contains_counters`).
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calculate_inline_content_size_for_block_level_boxes was relying on
inline_content_sizes to get the size of each block-level box child.
For absolutely positioned boxes, this was 0x0.
That was no-op before #29887, but then it prevented adding the sizes
of a sequence of floats. Abspos should just be ignored instead of
treated as 0x0.
This patch removes inline_content_sizes, moves the logic into
calculate_inline_content_size_for_block_level_boxes (the only caller),
and handles abspos correctly.
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* Place replaced and non-auto inline size independent FCs next to floats
The CSS2 specification says that replaced content and independent
formatting contexts should be placed next to floats. This change adds
support for that, but punts on support for independent formatting
contexts that have an auto inline size. With an auto inline size, we
which requires a much more complex layout algorithm.
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
* Fix issue with where last band was taken into account for inline size
* adjustment_from_floats should prevent margin collapse
* Properly handle elements with 0 height
---------
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
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This API has been removed in the latest version of WebRender and we can
simply get this information from the compositor-side scroll tree. In
addition, this change limits the amount of data sent to the pipeline
that actually changed and gives the function in the compositor a better
name.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
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Including hit tests in non-hit test display list items is no longer
supported in upstream WebRender, so this change switches legacy layout
to always use explicit hit test display list items.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
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* Introduce minibrowser.enabled prefs
* commit signoff
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Use the WebRender clip chain API
The old clipping API has been removed from WebRender, so this switches
both legacy and new layout over to use the clip chain API in preparation
for the WebRender upgrade.
<!-- Please describe your changes on the following line: -->
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] There are tests for these changes OR
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The old clipping API has been removed from WebRender, so this switches
both legacy and new layout over to use the clip chain API in preparation
for the WebRender upgrade.
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The newer versions of WebRender move types around between `webrender` and
`webrender_api` and this will reduce the churn during the upgrade.
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Make Layout 2020/2013 a runtime switch
This change makes the choice between Layout 2020 and Layout
2013 a runtime switch. The main part of the patch is removing all layout
related compile-time flags from the style crate. This makes the style crate a
lot simpler, but now Layout 2020 parses a good deal of features that it doesn't
support (table, vertical-align, etc). The good news is that we plan to add
these features to Layout 2020.
- Compile a single style for both Layout 2020 and Layout 2013
- Remove layout_2020/layout_2013 features
- Update GitHub workflows for single compilation
- Update test results
<!-- Please describe your changes on the following line: -->
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #29942
- [x] There are tests for these changes
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->
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Co-authored-by: Samson <16504129+sagudev@users.noreply.github.com>
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Fixed a typo error. The error was corrected by changing "argument" to "argument".
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Vendor the current version of WebRender
This is a step toward upgrading WebRender, which will be upgraded and
patched in the `third_party` directory. This change vendors the current
private branch of WebRender that we use and adds a `patches` directory
which tracks the changes on top of the upstream WebRender commit
described by third_party/webrender/patches/head.
<!-- Please describe your changes on the following line: -->
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes do not require tests because they do not change behavior.
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->
<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
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This is a step toward upgrading WebRender, which will be upgraded and
patched in the `third_party` directory. This change vendors the current
private branch of WebRender that we use and adds a `patches` directory
which tracks the changes on top of the upstream WebRender commit
described by third_party/webrender/patches/head.
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This function is already quite big and the changes necessary for
properly laying out independent formatting contexts next to floats will
make it even more unwieldy. Split the function in two and add a helper
for calculating the containing block for children and the margin. As
time goes on the independent formatting case is probably going to be
more like the replaced case anyway.
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
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r=mrobinson
Layout 2020: Optimize collapsible margin lookahead
Every time that we would lay out a block box that could collapse its top margin with its contents, we would do a lookahead to compute the resulting margin in order to place floats correctly.
The problem is that this lookahead could iterate several descendants, but then when laying these we would run the lookahead again.
This patch restricts the lookahead to boxes that either aren't collapsing their top margin with their parent, or that have 'clear' different than 'none' (since clearance prevents collapsing margins with the parent).
Since the lookahead stops iterating when it finds a box that doesn't collapse its top margin with its parent, or whose 'clear' isn't 'none', this should ensure that lookahead never handles the same box twice.
<!-- Please describe your changes on the following line: -->
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because there shouldn't be any change in behavior
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->
<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
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Every time that we would lay out a block box that could collapse its
top margin with its contents, we would do a lookahead to compute the
resulting margin in order to place floats correctly.
The problem was that this lookahead could iterate several descendants,
but then when laying these we would run the lookahead again.
This patch restricts the lookahead to boxes that either aren't collapsing
their top margin with their parent, or that have 'clear' different than
'none' (since clearance prevents collapsing margins with the parent).
Since the lookahead stops iterating when it finds a box that doesn't
collapse its top margin with its parent, or whose 'clear' isn't 'none',
this should ensure that lookahead never handles the same box twice.
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Update mozangle
This should allow servo to take advantage of faster compilation times on Windows.
<!-- Please describe your changes on the following line: -->
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->
<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
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This should allow servo to take advantage of faster compilation speeds
on Windows.
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Check computed (min-)block-size when determining margin collapse
To collapse margins through, CSS2 requires "zero or auto computed height" and "zero computed min-height" (the latter should also also include auto, which was introduced in CSS3 as the new initial value).
Similarly, "auto computed height" is required to collapse the bottom margin with the bottom margin of the contents.
Therefore this patch stops collapsing when the used height is clamped to zero by max-height, but the computed value is not zero. Same for non-zero percentages that are indefinite or that resolve to 0px.
Note that 0% and calc(0% + 0px) are still considered to be zero (so they allow margin collapse), this may a bit inconsistent but matches Firefox (for the collapsing through case).
This also matches the heuristics in find_block_margin_collapsing_with_parent(). We could change the heuristics instead, but then they would have to track block sizes in order to be able to resolve percentages.
The change makes margin-collapse-through-percentage-height-block.html fail, that test is only passing on Blink, which did a different interpretation of the spec. To be fair, various places of CSS2 loosely consider that indefinite percentages compute to auto, and even Firefox does so when determining whether to collapse the top margin with the contents.
Since the spec isn't particularly clear and interoperability is lacking, I filed https://github.com/w3c/csswg-drafts/issues/8919.
<!-- Please describe your changes on the following line: -->
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #29907
- [X] There are tests for these changes (1 test fails, see above)
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->
<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
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To collapse margins through, CSS2 requires "zero or auto computed height"
and "zero computed min-height" (the latter should also also include auto,
which was introduced in CSS3 as the new initial value).
Similarly, "auto computed height" is required to collapse the bottom margin
with the bottom margin of the contents.
Therefore this patch stops collapsing when the used height is clamped
to zero by max-height, but the computed value is not zero. Same for
non-zero percentages that are indefinite or that resolve to 0px.
Note that 0% and calc(0% + 0px) are still considered to be zero (so they
allow margin collapse), this may a bit inconsistent but matches Firefox
(for the collapsing through case).
This also matches the heuristics in find_block_margin_collapsing_with_parent().
We could change the heuristics instead, but then they would have to track
block sizes in order to be able to resolve percentages.
The change makes margin-collapse-through-percentage-height-block.html fail,
that test is only passing on Blink, which did a different interpretation
of the spec. To be fair, various places of CSS2 loosely consider that
indefinite percentages compute to auto, and even Firefox does so when
determining whether to collapse the top margin with the contents.
Since the spec isn't particularly clear and interoperability is lacking,
I filed https://github.com/w3c/csswg-drafts/issues/8919.
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Resolve percentages in find_block_margin_collapsing_with_parent
<!-- Please describe your changes on the following line: -->
Padding percentages weren't being resolved, this function would think
that margins wouldn't collapse even if the percentage resolved to 0px.
And margin percentages were always resolved to 0px.
So now the function takes a ContainingBlock parameter that is used to
resolve these percentages properly.
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)
<!-- Either: -->
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because ___
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Padding percentages weren't being resolved, this function would think
that margins wouldn't collapse even if the percentage resolved to 0px.
And margin percentages were always resolved to 0px.
So now the function takes a ContainingBlock parameter that is used to
resolve these percentages properly.
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Just a remnant from #29850, it was causing a build warning.
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Layout 2020: Properly calculate clearance
<!-- Please describe your changes on the following line: -->
calculate_clearance() was not taking into account that adding clearance prevents top margin from collapsing with earlier margins.
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #29885 and #29919
- [X] There are tests for these changes
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->
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calculate_clearance() was not taking into account that adding clearance
prevents top margin from collapsing with earlier margins.
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CSS viewport removal
It was removed from the spec and it's disabled everywhere.
This also removes the meta viewport support (which was implemented on top), but that also had a single test and is disabled everywhere, so I'm not too concerned, it can be implemented again if / when needed.
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #26349
- [x] There are tests for these changes
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This also removes the meta viewport support (which was implemented on top), but that also had a single test and is disabled everywhere, so I'm not too concerned, it can be implemented again if / when needed.
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layout_2020: Do linebreak for atomic inline-level elements
<!-- Please describe your changes on the following line: -->
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #29591 (GitHub issue number if applicable)
<!-- Either: -->
- [x] There are tests for these changes OR
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This method finish layout of the current line and start a new one.
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Indicate current white-space property of current nesting context.
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This directory now contains third_party software that is vendored into
the Servo source tree. The idea is that it would eventually hold
webrender and other crates from mozilla-central as well with a standard
patch management approach for each.
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r=mrobinson
Properly position floats when subsequent boxes collapse margins with containing block (2)
PR #29939 tried to address this but missed various cases.
<!-- Please describe your changes on the following line: -->
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #29944
- [X] There are tests for these changes
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->
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containing block (2)
PR #29939 tried to address this but missed various cases.
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