mirror of
https://github.com/servo/servo.git
synced 2025-07-08 07:53:40 +01:00
72 lines
2.3 KiB
Rust
72 lines
2.3 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* 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/. */
|
|
|
|
//! Values for CSS Box Alignment properties
|
|
//!
|
|
//! https://drafts.csswg.org/css-align/
|
|
|
|
use std::fmt;
|
|
use style_traits::{CssWriter, ToCss};
|
|
use values::computed::{Context, ToComputedValue};
|
|
use values::specified;
|
|
|
|
pub use super::specified::{AlignContent, JustifyContent, AlignItems, SelfAlignment};
|
|
pub use super::specified::{AlignSelf, JustifySelf};
|
|
|
|
/// The computed value for the `justify-items` property.
|
|
///
|
|
/// Need to carry around both the specified and computed value to handle the
|
|
/// special legacy keyword. Sigh.
|
|
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
|
|
pub struct JustifyItems {
|
|
/// The specified value for the property. Can contain `auto`.
|
|
pub specified: specified::JustifyItems,
|
|
/// The computed value for the property. Cannot contain `auto`.
|
|
pub computed: specified::JustifyItems,
|
|
}
|
|
|
|
impl ToCss for JustifyItems {
|
|
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
|
|
where W: fmt::Write,
|
|
{
|
|
self.computed.to_css(dest)
|
|
}
|
|
}
|
|
|
|
impl JustifyItems {
|
|
/// Returns the `auto` value.
|
|
pub fn auto() -> Self {
|
|
Self {
|
|
specified: specified::JustifyItems::auto(),
|
|
computed: specified::JustifyItems::normal(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl ToComputedValue for specified::JustifyItems {
|
|
type ComputedValue = JustifyItems;
|
|
|
|
/// <https://drafts.csswg.org/css-align/#valdef-justify-items-legacy>
|
|
fn to_computed_value(&self, _context: &Context) -> JustifyItems {
|
|
use values::specified::align;
|
|
let specified = *self;
|
|
let computed =
|
|
if self.0 != align::AlignFlags::AUTO {
|
|
*self
|
|
} else {
|
|
// If the inherited value of `justify-items` includes the
|
|
// `legacy` keyword, `auto` computes to the inherited value,
|
|
// but we assume it computes to `normal`, and handle that
|
|
// special-case in StyleAdjuster.
|
|
Self::normal()
|
|
};
|
|
|
|
JustifyItems { specified, computed }
|
|
}
|
|
|
|
#[inline]
|
|
fn from_computed_value(computed: &JustifyItems) -> Self {
|
|
computed.specified
|
|
}
|
|
}
|