Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-08-06 14:10:11 +01:00
Code Issues Projects Releases Packages Wiki Activity

style: Add a comment about why early properties are early.

Browse source
This commit is contained in:
Emilio Cobos Álvarez 2017-11-27 16:27:22 +01:00
parent ac6e04ebfb
commit cf45a45e18
No known key found for this signature in database
GPG key ID: 056B727BB9C1027C
1 changed files with 39 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

42
components/style/properties/properties.mako.rs
View file

@ -687,18 +687,54 @@ impl LonghandId {
fn is_early_property(&self) -> bool {
matches!(*self,
% if product == 'gecko':
LonghandId::TextOrientation |
// We need to know the number of animations / transition-properties
// before setting the rest of the related longhands, see #15923.
//
// FIXME(emilio): Looks to me that we could just do this in Gecko
// instead of making them early properties. Indeed, the spec
// mentions _used_ values, not computed values, so this looks wrong.
LonghandId::AnimationName |
LonghandId::TransitionProperty |
LonghandId::XLang |
// Needed to properly compute the writing mode, to resolve logical
// properties, and similar stuff. In this block instead of along
// `WritingMode` and `Direction` just for convenience, since it's
// Gecko-only.
LonghandId::TextOrientation |
// Needed to properly compute the zoomed font-size.
//
// FIXME(emilio): This could probably just be a cascade flag like
// IN_SVG_SUBTREE or such, and we could nuke this property.
LonghandId::XTextZoom |
LonghandId::MozScriptLevel |
// Needed to do font-size computation in a language-dependent way.
LonghandId::XLang |
// Needed for ruby to respect language-dependent min-font-size
// preferences properly, see bug 1165538.
LonghandId::MozMinFontSizeRatio |
// Needed to do font-size for MathML. :(
LonghandId::MozScriptLevel |
% endif
// Needed to compute font-relative lengths correctly.
LonghandId::FontSize |
LonghandId::FontFamily |
// Needed to resolve currentcolor at computed value time properly.
//
// FIXME(emilio): All the properties should be moved to currentcolor
// as a computed-value (and thus resolving it at used-value time).
//
// This would allow this property to go away from this list.
LonghandId::Color |
// FIXME(emilio): There's no reason for this afaict, nuke it.
LonghandId::TextDecorationLine |
// Needed to properly compute the writing mode, to resolve logical
// properties, and similar stuff.
LonghandId::WritingMode |
LonghandId::Direction
)