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Implement 'background-origin' property in CSS3 Background

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This property determines the background positioning area, that is the position of
the origin of an image specified using the 'background-image' CSS property.

'background-origin' is ignored when background-attachment is fixed.

Spec: http://dev.w3.org/csswg/css-backgrounds-3/#background-origin

Fixes #6045.
This commit is contained in:
Jinwoo Song 2015-05-13 18:18:40 +09:00
parent b05c3fc0c0
commit b1b22c0c53
7 changed files with 119 additions and 8 deletions
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16
components/style/properties.mako.rs
View file

@ -1295,6 +1295,8 @@ pub mod longhands {
${single_keyword("background-attachment", "scroll fixed")}
${single_keyword("background-origin", "padding-box border-box content-box")}
<%self:longhand name="background-size">
use cssparser::{ToCss, Token};
use std::ascii::AsciiExt;
@ -4244,9 +4246,10 @@ pub mod shorthands {
// TODO: other background-* properties
<%self:shorthand name="background"
sub_properties="background-color background-position background-repeat background-attachment background-image background-size">
sub_properties="background-color background-position background-repeat background-attachment
background-image background-size background-origin">
use properties::longhands::{background_color, background_position, background_repeat};
use properties::longhands::{background_attachment, background_image, background_size};
use properties::longhands::{background_attachment, background_image, background_size, background_origin};
let mut color = None;
let mut image = None;
@ -4255,6 +4258,7 @@ pub mod shorthands {
let mut size = None;
let mut attachment = None;
let mut any = false;
let mut origin = None;
loop {
if position.is_none() {
@ -4299,6 +4303,13 @@ pub mod shorthands {
continue
}
}
if origin.is_none() {
if let Ok(value) = input.try(|input| background_origin::parse(context, input)) {
origin = Some(value);
any = true;
continue
}
}
break
}
@ -4310,6 +4321,7 @@ pub mod shorthands {
background_repeat: repeat,
background_attachment: attachment,
background_size: size,
background_origin: origin,
})
} else {
Err(())