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style: Support full <image> syntax in list-style-image as per spec.

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This allows supporting image-set(), etc, and simplifies the bullet frame
code significantly, too thanks to two changes:

  * Instead of manually managing the image request, use the CSS image
    loader, with the `REQUEST_REQUIRES_REFLOW` flag, to handle image
    loads correctly. This didn't exist when this code was initially
    implemented, but we can nicely use it now.

  * Instead of re-implementing another WebRender command-builder thing,
    we can just reuse the nsImageRenderer code.

Differential Revision: https://phabricator.services.mozilla.com/D100774
This commit is contained in:
Emilio Cobos Álvarez 2021-01-07 04:15:01 +00:00
parent a4506d94ec
commit 65a06d5003
4 changed files with 7 additions and 13 deletions
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6
components/style/properties/longhands/list.mako.rs
View file

@ -54,10 +54,10 @@ ${helpers.single_keyword(
${helpers.predefined_type(
"list-style-image",
"url::ImageUrlOrNone",
"Image",
engines="gecko servo-2013 servo-2020",
initial_value="computed::url::ImageUrlOrNone::none()",
initial_specified_value="specified::url::ImageUrlOrNone::none()",
initial_value="computed::Image::None",
initial_specified_value="specified::Image::None",
animation_value_type="discrete",
spec="https://drafts.csswg.org/css-lists/#propdef-list-style-image",
servo_restyle_damage="rebuild_and_reflow",

8
components/style/properties/shorthands/list.mako.rs
View file

@ -10,7 +10,7 @@
derive_serialize="True"
spec="https://drafts.csswg.org/css-lists/#propdef-list-style">
use crate::properties::longhands::{list_style_image, list_style_position, list_style_type};
use crate::values::specified::url::ImageUrlOrNone;
use crate::values::specified::Image;
pub fn parse_value<'i, 't>(
context: &ParserContext,
@ -69,7 +69,7 @@
(true, 2, None, None) => {
Ok(expanded! {
list_style_position: position,
list_style_image: ImageUrlOrNone::none(),
list_style_image: Image::None,
list_style_type: ListStyleType::None,
})
}
@ -83,14 +83,14 @@
(true, 1, Some(list_style_type), None) => {
Ok(expanded! {
list_style_position: position,
list_style_image: ImageUrlOrNone::none(),
list_style_image: Image::None,
list_style_type: list_style_type,
})
}
(true, 1, None, None) => {
Ok(expanded! {
list_style_position: position,
list_style_image: ImageUrlOrNone::none(),
list_style_image: Image::None,
list_style_type: ListStyleType::None,
})
}

3
components/style/values/computed/url.rs
View file

@ -13,6 +13,3 @@ pub use crate::servo::url::{ComputedImageUrl, ComputedUrl};
/// Computed <url> | <none>
pub type UrlOrNone = GenericUrlOrNone<ComputedUrl>;
/// Computed image <url> | <none>
pub type ImageUrlOrNone = GenericUrlOrNone<ComputedImageUrl>;

3
components/style/values/specified/url.rs
View file

@ -13,6 +13,3 @@ pub use crate::servo::url::{SpecifiedImageUrl, SpecifiedUrl};
/// Specified <url> | <none>
pub type UrlOrNone = GenericUrlOrNone<SpecifiedUrl>;
/// Specified image <url> | <none>
pub type ImageUrlOrNone = GenericUrlOrNone<SpecifiedImageUrl>;