servo/components/style/values/generics/mod.rs
2017-04-25 17:13:46 +05:30

70 lines
2.2 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/. */
//! Generic types that share their serialization implementations
//! for both specified and computed values.
use euclid::size::Size2D;
use std::fmt;
use style_traits::ToCss;
use super::HasViewportPercentage;
use super::computed::{Context, ToComputedValue};
pub use self::basic_shape::serialize_radius_values;
pub mod basic_shape;
pub mod position;
#[derive(Clone, PartialEq, Debug)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
/// A type for representing CSS `widthh` and `height` values.
pub struct BorderRadiusSize<L>(pub Size2D<L>);
impl<L> HasViewportPercentage for BorderRadiusSize<L> {
#[inline]
fn has_viewport_percentage(&self) -> bool { false }
}
impl<L> BorderRadiusSize<L> {
#[inline]
/// Create a new `BorderRadiusSize` for an area of given width and height.
pub fn new(width: L, height: L) -> BorderRadiusSize<L> {
BorderRadiusSize(Size2D::new(width, height))
}
}
impl<L: Clone> BorderRadiusSize<L> {
#[inline]
/// Create a new `BorderRadiusSize` for a circle of given radius.
pub fn circle(radius: L) -> BorderRadiusSize<L> {
BorderRadiusSize(Size2D::new(radius.clone(), radius))
}
}
impl<L: ToCss> ToCss for BorderRadiusSize<L> {
#[inline]
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
self.0.width.to_css(dest)?;
dest.write_str(" ")?;
self.0.height.to_css(dest)
}
}
impl<L: ToComputedValue> ToComputedValue for BorderRadiusSize<L> {
type ComputedValue = BorderRadiusSize<L::ComputedValue>;
#[inline]
fn to_computed_value(&self, context: &Context) -> Self::ComputedValue {
let w = self.0.width.to_computed_value(context);
let h = self.0.height.to_computed_value(context);
BorderRadiusSize(Size2D::new(w, h))
}
#[inline]
fn from_computed_value(computed: &Self::ComputedValue) -> Self {
let w = ToComputedValue::from_computed_value(&computed.0.width);
let h = ToComputedValue::from_computed_value(&computed.0.height);
BorderRadiusSize(Size2D::new(w, h))
}
}