convert less interesting debug! logs to traces
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converted some debug! invocations to trace!
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Implement downloadable fonts on Windows
This PR implements downloadable font support for Servo. It depends on new changes in webrender and dwrote, and adds a dependency on the `truetype` crate for pulling out basic font information. The original DirectWrite API does not provide an easy way to query font information direct from a `FontFace` (which is what you create from a `FontFile`). There are new DirectWrite APIs starting with Windows 10 that allow for this, but they are Win 10+ only, and `winapi-rs` does not yet have bindings for those versions of the interfaces (specificially, `IDirectWriteFontFace3`). The way to do this with DW is to go through a lot of pain in creating a custom collection and enumerator, add your font to your custom collection, then query the collection for its properties.
Instead, we just parse the truetype tables directly to pull out the few bits of information that we need. The `truetype` crate is ok, but I discovered some bugs (an update needs to get pushed to crates.io before this will build). It might be more worthwhile to just implement the tiny bit of truetype parsing that we need ourselves in Servo.
I'm guessing there are existing tests for downloadable fonts...
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Make offset parent queries less buggy.
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Offset parent queries, which are used in the getters for HTMLElement's `offsetParent`, `offsetTop`, `offsetLeft`, `offsetWidth`, and `offsetHeight`, are pretty busted. The most egregious bug is that, as reported in #12939, inline elements are treated as if they're not present in the document. This PR fixes that and all of the other bugs I could trace directly to the offset parent query code, but `offsetTop` and `offsetLeft` are still unreliable in certain circumstances for reasons I haven't looked into (#13708). Inline elements with no content are still treated as not present due to #13982, so #13944 isn't fixed with this PR, either.
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- [X] These changes fix#12939 and fix#12595
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It’s a compiler plugin that uses unstable compiler APIs
that are not on a path to stabilization.
With this changes, there is one less thing that might break
when we update the compiler. For example:
https://github.com/sfackler/rust-phf/pull/101
Per https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-width:
The IDL attributes width and height must return the rendered width and
height of the image, in CSS pixels, if the image is being rendered, and is
being rendered to a visual medium; or else the density-corrected intrinsic
width and height of the image, in CSS pixels, if the image has intrinsic
dimensions and is available but not being rendered to a visual medium; or
else 0, if the image is not available or does not have intrinsic dimensions.
Ensure FrameState consistency
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As we begin to add more state to `FrameState`, we need to make sure that when we do replacements and when we finish traversals that the state is properly updated. This also fixes an issue where we were not updating the `url` of the `FrameState` when navigating with replacement enabled (I wonder if it would be possible to write a test to detect this. The url only matters when reloading a document after it was discarded by the max session history).
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Media query parsing and evaluation in stylo using nsMediaFeatures
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Reviewed in the bug.
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Use Box<CalcLengthOrPercentage> in specified values to avoid bloating inline sizes
For #15061
CalcLOP is a large struct, and gets used quite often. While #15063 reduces its size a bit,
it will still be much larger than any of the other variants in the `specified::Length*` types,
so it will still bloat sizes, especially for specified values that contain many lengths.
This change boxes it in the length types, so that it just takes one word.
r? @heycam
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Update geckolib build-time bindgen build script for recent regex changes.
`./mach build-geckolib --with-gecko ...` is broken due to regex's API changing a bit.
r? @Manishearth
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The Salt bootstrapper invokes Salt during `./mach bootstrap`
to install Servo's build dependencies.
It uses salt-call pinned to the same version of Salt as used in saltfs.
Currently, the implementation uses gitfs and reads directly from
the master branch of the saltfs repo;
in the future this should be changed when the relevant Salt states
are moved in-tree as part of Dockerization for TaskCluster.
We have not Salted our Windows machines, so the existing Windows
bootstrappers are retained. Currently this is only tested on
Ubuntu Trusty.
Salt uses various system python libraries,
including `python-apt` on Debian-based OSes to interact with apt.
`python-apt` does not seem to be installable via a requirements.txt
file, and the versions available on PyPI are far behind the versions
installed on actual Ubuntu machines.
Additionally, adding `python-apt` as an unconditional python dependency
would add bloat for users of other OSes, and lead to more churn
as additional OSes are supported.
However, as `python-apt` is already installed via apt on these machines,
we can allow Salt to instead use the module by using
`--system-site-packages` for the python virtualenv.
We also add the `-I` flag to `pip install` to ensure we have a local,
untouched copy of any other python packages used.
However, because this prints system-level Python packages in scope,
it slightly breaks isolation, so it is important to always pin
all dependencies in the requirements files.
Only create scrolling overflow regions when necessary
Only create scroll roots for overflow regions when the overflow region
is actually larger than the container size. This prevents creating
scrolling roots for elements that do not have overflow scroll as a
side-effect of the way their height and width is defined. For example,
tables should never respect overflow:scroll since their height and
width should always be large enough to prevent overflow. This also
decreases the size and complexity of the display list in many other
circumstances.
As part of this change, transformed overflow calculation is moved from
display list construction to layout. This should mean that overflow is
handled more accurately earlier.
Fixes#14574.
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Only create scroll roots for overflow regions when the overflow region
is actually larger than the container size. This prevents creating
scrolling roots for elements that do not have overflow scroll as a
side-effect of the way their height and width is defined. For example,
tables should never respect overflow:scroll since their height and
width should always be large enough to prevent overflow. This also
decreases the size and complexity of the display list in many other
circumstances.
As part of this change, transformed overflow calculation is moved from
display list construction to layout. This should mean that overflow is
handled more accurately earlier.
Fixes#14574.
