Update mozangle
This should allow servo to take advantage of faster compilation times 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.
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Set the Windows subsystem using a rust directive
This is one less thing that mach has to do now.
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Resolve percentages in find_block_margin_collapsing_with_parent
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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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Remove unused variable
Just a remnant from #29850, it was causing a build warning.
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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.
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.
Layout 2020: Properly calculate clearance
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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.
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layout_2020: Do linebreak for atomic inline-level elements
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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.
Create a top-level "third_party" directory
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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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.
Update mozangle, cc, and cmake
This also moves some environment variable configuration to the shared
`build_env()` method, because previously clang was only being chosen for
running `./mach build` and not `./mach test-unit` which was leading to
rebuilds and thus build failures when running `test-unit`. I guess the
cmake crate does not expect the compiler to change between subsequent
runs.
Fixes#29674
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This also moves some environment variable configuration to the shared
`build_env()` method, because previously clang was only being chosen for
running `./mach build` and not `./mach test-unit` which was leading to
rebuilds and thus build failures when running `test-unit`. I guess the
cmake crate does not expect the compiler to change between subsequent
runs.
Properly position floats when subsequent boxes collapse margins with containing block (2)
PR #29939 tried to address this but missed various cases.
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Combine all script tests into `test-scripts`
Remove:
- tidy self test support from `./mach test`
- `./mach test-idl`
Adds a `./mach test-scripts` command that is responsible for running all
Python script tests. Run this during the CI to catch regressions in
changes to scripts. The WebIDL tests are still *very* slow and there are
from Gecko, so only run them when "-a" is passed meaning all tests.
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Make Layout 2013 style a superset of Layout 2020 style
This is the first step toward removing the compile-time difference in
style between Layout 2020 and Layout 2013. This change:
- Adds `attr()` CSS content support to legacy layout
- Adds parsing support for some unsupported features such as `display: flow-root` and `display: contents`.
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Remove:
- tidy self test support from `./mach test`
- `./mach test-idl`
Adds a `./mach test-scripts` command that is responsible for running all
Python script tests. Run this during the CI to catch regressions in
changes to scripts. The WebIDL tests are still *very* slow and there are
from Gecko, so only run them when "-a" is passed meaning all tests.
Layout 2020: implement clearance as Option<Length>
Clearance was implemented as a Length, where zero meant no clearance. However, having a clearance of 0px should be different than having no clearance, since the former can still prevent margin collapse.
This patch keeps the existing behavior, so it won't be possible to get a clearance of Some(Length::zero()), but it prepares the terrain for a follow-up to fix calculate_clearance to return the proper thing.
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Clearance was implemented as a Length, where zero meant no clearance.
However, having a clearance of 0px should be different than having
no clearance, since the former can still prevent margin collapse.
This patch keeps the existing behavior, so it won't be possible to get
a clearance of Some(Length::zero()), but it prepares the terrain for
a follow-up to fix calculate_clearance to return the proper thing.
Properly position floats when subsequent boxes collapse margins with containing block
Margins should be able to collapse through floats when collapsing with
parent blocks (the containing block). To properly place floats in this
situation, we need to look at these subsequent floats to find out how
much of the margin will collapse with the parent.
This initial implementation is very basic and the second step would be
to cache this in order to avoid having to constantly recalculate it.
Fixes#29915.
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
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Margins should be able to collapse through floats when collapsing with
parent blocks (the containing block). To properly place floats in this
situation, we need to look at these subsequent floats to find out how
much of the margin will collapse with the parent.
This initial implementation is very basic and the second step would be
to cache this in order to avoid having to constantly recalculate it.
Fixes#29915.
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
Remove the DOMToTexture feature
This relies on WebRender's frame output API, `set_output_image_handler`,
which has been removed from the latest upstream [1]. It's sad to remove
this feature, which was probably a lot of work to implement, but it
seems difficult to patch WebRender to restore this functionality.
Fixes#29936.
1. https://hg.mozilla.org/mozilla-central/rev/361521e3c52324809553c555fb066d50f023d9bf
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This relies on WebRender's frame output API, `set_output_image_handler`,
which has been removed from the latest upstream [1]. It's sad to remove
this feature, which was probably a lot of work to implement, but it
seems difficult to patch WebRender to restore this functionality.
Fixes#29936.
1. https://hg.mozilla.org/mozilla-central/rev/361521e3c52324809553c555fb066d50f023d9bf
Update serde_json
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css `inset` should work on Layout 2020
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`top`, `bottom`, `left`, `right`, are already implemented in layout-2020, so adding the shorthand can be enabled.
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I'm don't know if I need tests for this, how do I determine that?
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Fix clearance on replaced elements
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Update uuid
This is required to use the new version of gleam and update ipc-channels
without duplicating the dependency in the future.
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Rename `tests/wpt/web-platform-tests` to `tests/wpt/tests`
Rename the WPT tests directory to be more consistent with other WPT suites and
also to match what is done in Gecko. This makes things a bit simpler to type.
- Move tests/wpt/web-platform-tests to tests/wpt/tests
- Update scripts to reflect new WPT directory name
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Increase BFC root height to contain floats
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