/* 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/. */

//! Computed types for text properties.

use values::{CSSInteger, CSSFloat};
use values::animated::ToAnimatedZero;
use values::computed::{NonNegativeAu, NonNegativeNumber};
use values::computed::length::{Length, LengthOrPercentage};
use values::generics::text::InitialLetter as GenericInitialLetter;
use values::generics::text::LineHeight as GenericLineHeight;
use values::generics::text::Spacing;

/// A computed value for the `initial-letter` property.
pub type InitialLetter = GenericInitialLetter<CSSFloat, CSSInteger>;

/// A computed value for the `letter-spacing` property.
pub type LetterSpacing = Spacing<Length>;

/// A computed value for the `word-spacing` property.
pub type WordSpacing = Spacing<LengthOrPercentage>;

/// A computed value for the `line-height` property.
pub type LineHeight = GenericLineHeight<NonNegativeNumber, NonNegativeAu>;

impl ToAnimatedZero for LineHeight {
    #[inline]
    fn to_animated_zero(&self) -> Result<Self, ()> { Err(()) }
}