Fix linear gradient's specified form #13892
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WIP for #13892
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Stylo: Basic support for grid-{row,column}-{start,end}
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This allows us to get rid of a bunch of lifetimes and simplify a lot of code. It
also lets us get rid of that nasty lifetime transmute, which is awesome.
The situation with thread-local contexts is still suboptimal, but we fix that in
subsequent patches.
Update atoms when build geckolib with gecko
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This would automatically update the generated atom-related files in-tree before calling cargo to build geckolib. With this change, `./mach build-gecko --with-gecko` should be now the easiest way to update all in-tree bindings.
This isn't really a build-time generating, because it isn't invoked from the build script, but from mach. It isn't done the other way because
1. it doesn't seem to be a common practice for build script to write anything to the src directory
2. real build-time generated atom data wouldn't need to include atoms for multiple platforms, but we still want it so that we can build geckolib independently
cc @heycam
r? @emilio
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Implement background-position-x/y
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This is a WIP PR. Just HorizontalPosition / VerticalPosition implementations are complete. I would like to get early feedbacks about this architecture. Here's some architectural topics to consider:
- I created `HorizontalPosition` and `VerticalPosition` structs for this and used them in `Position` as well. We have decided to split `Keyword` enum, but we need them as unified for `PositionComponent` enum. So I didn't split but I can split it if we prefer to change PositionComponent as well.
- If we prefer Keyword enum like this, we can create a SubPosition(or something like this) instead of HorizontalPosition/VerticalPosition enums since only difference is 2 lines in `parse` functions. We can create a `parse_horizontal` and `parse_vertical` instead and a lot of code duplication can be cleared.
- I couldn't find a good way to use HorizontalPosition/VerticalPosition's parse functions in `Position`'s parse function. It is a bit more complicated. I'm open to suggestions :)
- I don't know much about logical keywords so do I need to do something different? I placed some comments where logical keywords are processing.
Any advice about these?
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stylo: regenerate bindings
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This corresponds to https://treeherder.mozilla.org/#/jobs?repo=stylo&revision=10ac81fb6185037648c6694889aa030d28a5e8a5.
There's probably no meaningful change here, but there's a lot of churn since I just changed locally to using clang-3.9. r? @Manishearth
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Reuse box-shadow code for drop-shadow filter
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Followup for #14218. Extracted the `Shadow` struct and methods into `values::*`, and make `box-shadow` and `drop-shadow` share the new `Shadow` type. The `ToCss` trait is not reused because they behave different in the two properties.
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Add asserts to make failure clearer
Gecko currently doesn't pass absolute path for `MOZ_DIST`, which leads to obscure panic when running the build script. This patch adds some assertions so that failures around this would be clearer.
r? @emilio
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