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style: Add percentage for opacity (i.e. <alpha-value>).

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The following properties accept <alpha-value> [1], which is
"<number> | <percentage>", so we update the parser, spec links, and
their web-platform-tests.
1. opacity
2. flood-opacity
3. fill-opacity
4. stroke-opacity
5. stop-opacity
6. -moz-window-opacity

Besides, shape-image-threshold [2] still only accepts <number>, so we need
to support a different version of `Opacity::parse()`.

[1] https://drafts.csswg.org/css-color/#typedef-alpha-value
[2] https://drafts.csswg.org/css-shapes/#shape-image-threshold-property

Differential Revision: https://phabricator.services.mozilla.com/D37493
This commit is contained in:
Boris Chiou 2019-07-12 19:49:32 +00:00 • committed by Emilio Cobos Álvarez
parent 65bf72f131
commit 87231e676d
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5 changed files with 43 additions and 14 deletions
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2
components/style/properties/longhands/effects.mako.rs
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@ -13,7 +13,7 @@ ${helpers.predefined_type(
"1.0",
animation_value_type="ComputedValue",
flags="CREATES_STACKING_CONTEXT CAN_ANIMATE_ON_COMPOSITOR",
spec="https://drafts.csswg.org/css-color/#opacity",
spec="https://drafts.csswg.org/css-color/#transparency",
servo_restyle_damage = "reflow_out_of_flow",
)}