Add support for keyword values for min-width and max-width
This is a follow-up to #14432 which got closed and can no longer be re-opened.
This PR aims to add support for keyword-values max-content, min-content, fit-content, and fill-available to the properties that use them, namely min-width, min-height, max-width, and max-height.
It's still untested because I still haven't figured out how to do that. I guess I should write or find some web page that uses these properties.
Refs #13821.
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Implement gecko glue for clip property
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Implemented gecko glue for clip property.
Clip property looks slightly different in gecko. `auto` top and left values are preserved as auto in [gecko](http://searchfox.org/mozilla-central/rev/39e4b25a076c59d2e7820297d62319f167871449/layout/style/nsRuleNode.cpp#10294,10316) but converted to 0 in [servo](https://dxr.mozilla.org/servo/rev/65624dbfc28442b58145215f524eb13aeb2cadf6/components/style/values/specified/mod.rs#942). Gecko is setting `NS_STYLE_CLIP_TOP_AUTO` and `NS_STYLE_CLIP_LEFT_AUTO` flags with that information. But I tried this property in stylo build and it is working correctly like this. It looks like it doesn't change the outcome of the property.
~Do we really need to set these flags?~
Manishearth and bz said that auto and 0 values are same.
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Stylo: add `content: -moz-alt-content`
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Part of https://bugzilla.mozilla.org/show_bug.cgi?id=1341642
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Fix animation serialization 15398 pt2
Fixes animation serialization so that an animation shorthand is serialized only when the value lists have the same length (part of #15398)
There are two commits here - the first is a refactoring to update PropertyDeclarationBlock::to_css to match the spec (please see the full commit message for perhaps too many details).
The second commit utilizes the changes in the first, and updates the animation serialization itself to write an empty serialization if the longhand value lists have different lengths, as per the original issue.
Interestingly, the refactoring of the first commit simplified quite a lot more than the fix for this bug, in particular, the special case of 'overflow' shorthand serialization is handled by default, without the extra special case code (now removed).
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Fixes#15398
The previous commit did most of the work here of updating the algorithm
to skip shorthands if a shorthand value was an empty string. This commit
just updates animations LonghandToSerialize's implementation of
to_css_declared to write an empty string value if the list lengths
differ (and updates the test to match).
Implement an ExtremumLength type which contains all the enumerated
keyword values for min-width, min-height, max-width, and
max-height. Then, implement a MinLength which can be used for min-width
and min-height. So far this just maps to Gecko values.
Refs #13821.
possible shorthands matches the linked spec.
Previously substep 5 attempted to serialize the complete shorthand
declaration and substep 6 skipped to the next shorthand only if the
current shorthand was not serialized, but this did not catch empty
serializations. The spec on the other hand specifically says that the
*value* should be evaluated first and if the value is empty substep 6
should skip to the next shorthand - which is what happens now.
To do this required some refactoring which mostly simplifies the code.
Specifically:
- append_declaration_value was refactored so that importance is not
required as a arg (by moving it to the end of append_serialization)
and is_overflow_with_name was removed as an arg also (initially I
refactored it elsewhere, but it turns out it's no longer required at
all - more below). With these changes, append_declaration_value can
be used within the algorithm for to_css to obtain just the value for
substep 5.
- Substeps 7 and 8 of the algorithm become explicit (they were implicit
before) by passing the value, shorthand and importance to
append_serialization.
- serialize_shorthand_to_buffer is no longer required (as the algorithm
serializes the value first instead, as per the spec.
A surprising result of this was that I could also remove a lot of code
handling the special case of the overflow properties serialization. This
is because the overflow's LonghandToCss implementation of
to_css_declared already does the right thing according to the spec - it
writes the single value if both overflow-x and -y are equal, and
writes nothing otherwise - so that the algorithm now skips that shorthand
instead rendering the longhands.
Simplify defining arc ffi types
r? @Manishearth
I don't have a good sense for creating syntax... so if you have any suggestion for the syntax of `impl_arc_ffi` macro, it would be appreciated.
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@keyframes anim {
from { opacity: 0; transform: none; }
to { transform: none; }
}
In above case, we have to add opacity property and value in the 'to' keyframe.
fixed the wrong behavior of border-spacing
fixed the wrong behavior of border-spacing
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Fix parsing methods of column-{gap,width}
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They weren't accepting {normal, auto} keywords. Fixed parsing methods of these properties.
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Animation longhand serialization should be a list of each animation rather than a list of lists for each longhand.
Fixes part of #15398 - serialization should be a list of each animation, rather than a list of lists for each longhand.
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Actually include file with marker shorthand
This wasn't being included so nothing was actually happening.
r? @heycam or @mbrubeck
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Use bitflags for multikeyword properties
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Use bitflags for multikeyword properties
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