style: Implement scroll-margin parser and serializer.

The reason why we use  RelaxedAtomBool is that
ScrollSnapUtils::GetSnapPointForDestination() is called both from the main and
the compositor threads, and the function will have a branch depending on the
pref value.

Differential Revision: https://phabricator.services.mozilla.com/D20101
This commit is contained in:
Hiroyuki Ikezoe 2019-02-18 02:25:54 +00:00 committed by Emilio Cobos Álvarez
parent d6750de0c3
commit 79a5e97c13
3 changed files with 50 additions and 1 deletions

View file

@ -28,3 +28,32 @@ ${helpers.two_properties_shorthand(
"specified::LengthPercentageOrAuto::parse",
spec="https://drafts.csswg.org/css-logical/#propdef-margin-inline"
)}
${helpers.four_sides_shorthand(
"scroll-margin",
"scroll-margin-%s",
"specified::Length::parse",
spec="https://drafts.csswg.org/css-scroll-snap-1/#propdef-scroll-margin",
products="gecko",
gecko_pref="layout.css.scroll-snap-v1.enabled",
)}
${helpers.two_properties_shorthand(
"scroll-margin-block",
"scroll-margin-block-start",
"scroll-margin-block-end",
"specified::Length::parse",
spec="https://drafts.csswg.org/css-scroll-snap-1/#propdef-scroll-margin-block",
products="gecko",
gecko_pref="layout.css.scroll-snap-v1.enabled",
)}
${helpers.two_properties_shorthand(
"scroll-margin-inline",
"scroll-margin-inline-start",
"scroll-margin-inline-end",
"specified::Length::parse",
spec="https://drafts.csswg.org/css-scroll-snap-1/#propdef-scroll-margin-inline",
products="gecko",
gecko_pref="layout.css.scroll-snap-v1.enabled",
)}