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Implement drawing an image from a CSS style value into a canvas.

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This commit is contained in:
Alan Jeffrey 2017-07-05 15:18:08 -05:00
parent 992c647f76
commit 2318caf002
8 changed files with 232 additions and 125 deletions
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16
components/script/dom/cssstylevalue.rs
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@ -2,6 +2,8 @@
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use cssparser::Parser;
use cssparser::ParserInput;
use dom::bindings::codegen::Bindings::CSSStyleValueBinding::CSSStyleValueMethods;
use dom::bindings::codegen::Bindings::CSSStyleValueBinding::Wrap;
use dom::bindings::js::Root;
@ -10,6 +12,7 @@ use dom::bindings::reflector::reflect_dom_object;
use dom::bindings::str::DOMString;
use dom::globalscope::GlobalScope;
use dom_struct::dom_struct;
use servo_url::ServoUrl;
#[dom_struct]
pub struct CSSStyleValue {
@ -44,3 +47,16 @@ impl CSSStyleValueMethods for CSSStyleValue {
self.Stringifier()
}
}
impl CSSStyleValue {
/// Parse the value as a `url()`.
/// TODO: This should really always be an absolute URL, but we currently
/// return relative URLs for computed values, so we pass in a base.
/// https://github.com/servo/servo/issues/17625
pub fn get_url(&self, base_url: ServoUrl) -> Option<ServoUrl> {
let mut input = ParserInput::new(&*self.value);
let mut parser = Parser::new(&mut input);
parser.expect_url().ok()
.and_then(|string| base_url.join(&*string).ok())
}
}