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119 lines
3.9 KiB
Rust
119 lines
3.9 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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//! Computed types for CSS values related to borders.
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use app_units::Au;
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use std::fmt::{self, Write};
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use style_traits::{ToCss, CssWriter};
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use values::animated::ToAnimatedZero;
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use values::computed::{Context, Number, NumberOrPercentage, ToComputedValue};
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use values::computed::length::{LengthOrPercentage, NonNegativeLength};
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use values::generics::border::BorderCornerRadius as GenericBorderCornerRadius;
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use values::generics::border::BorderImageSideWidth as GenericBorderImageSideWidth;
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use values::generics::border::BorderImageSlice as GenericBorderImageSlice;
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use values::generics::border::BorderRadius as GenericBorderRadius;
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use values::generics::border::BorderSpacing as GenericBorderSpacing;
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use values::generics::rect::Rect;
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use values::generics::size::Size;
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use values::specified::border::{BorderImageRepeat as SpecifiedBorderImageRepeat, BorderImageRepeatKeyword};
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/// A computed value for the `border-image-width` property.
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pub type BorderImageWidth = Rect<BorderImageSideWidth>;
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/// A computed value for a single side of a `border-image-width` property.
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pub type BorderImageSideWidth = GenericBorderImageSideWidth<LengthOrPercentage, Number>;
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/// A computed value for the `border-image-slice` property.
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pub type BorderImageSlice = GenericBorderImageSlice<NumberOrPercentage>;
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/// A computed value for the `border-radius` property.
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pub type BorderRadius = GenericBorderRadius<LengthOrPercentage>;
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/// A computed value for the `border-*-radius` longhand properties.
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pub type BorderCornerRadius = GenericBorderCornerRadius<LengthOrPercentage>;
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/// A computed value for the `border-spacing` longhand property.
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pub type BorderSpacing = GenericBorderSpacing<NonNegativeLength>;
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impl BorderImageSideWidth {
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/// Returns `1`.
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#[inline]
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pub fn one() -> Self {
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GenericBorderImageSideWidth::Number(1.)
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}
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}
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impl BorderSpacing {
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/// Returns `0 0`.
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pub fn zero() -> Self {
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GenericBorderSpacing(Size::new(NonNegativeLength::zero(), NonNegativeLength::zero()))
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}
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/// Returns the horizontal spacing.
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pub fn horizontal(&self) -> Au {
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Au::from(*self.0.width())
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}
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/// Returns the vertical spacing.
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pub fn vertical(&self) -> Au {
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Au::from(*self.0.height())
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}
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}
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impl BorderCornerRadius {
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/// Returns `0 0`.
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pub fn zero() -> Self {
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GenericBorderCornerRadius(Size::new(LengthOrPercentage::zero(), LengthOrPercentage::zero()))
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}
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}
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impl ToAnimatedZero for BorderCornerRadius {
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#[inline]
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fn to_animated_zero(&self) -> Result<Self, ()> {
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// FIXME(nox): Why?
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Err(())
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}
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}
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/// The computed value of the `border-image-repeat` property:
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///
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/// https://drafts.csswg.org/css-backgrounds/#the-border-image-repeat
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#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq)]
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pub struct BorderImageRepeat(pub BorderImageRepeatKeyword, pub BorderImageRepeatKeyword);
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impl BorderImageRepeat {
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/// Returns the `stretch` value.
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pub fn stretch() -> Self {
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BorderImageRepeat(BorderImageRepeatKeyword::Stretch, BorderImageRepeatKeyword::Stretch)
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}
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}
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impl ToCss for BorderImageRepeat {
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fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
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where
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W: Write,
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{
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self.0.to_css(dest)?;
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if self.0 != self.1 {
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dest.write_str(" ")?;
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self.1.to_css(dest)?;
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}
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Ok(())
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}
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}
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impl ToComputedValue for SpecifiedBorderImageRepeat {
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type ComputedValue = BorderImageRepeat;
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#[inline]
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fn to_computed_value(&self, _: &Context) -> Self::ComputedValue {
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BorderImageRepeat(self.0, self.1.unwrap_or(self.0))
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}
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#[inline]
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fn from_computed_value(computed: &Self::ComputedValue) -> Self {
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SpecifiedBorderImageRepeat(computed.0, Some(computed.1))
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}
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}
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