120 lines
3.8 KiB
Rust
120 lines
3.8 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 https://mozilla.org/MPL/2.0/. */
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//! Computed types for text properties.
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use crate::values::computed::length::LengthPercentage;
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use crate::values::generics::NumberOrAuto;
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use crate::values::generics::text::{
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GenericHyphenateLimitChars, GenericInitialLetter, GenericTextDecorationLength, GenericTextIndent,
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};
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use crate::values::specified::text as specified;
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use crate::values::specified::text::{TextEmphasisFillMode, TextEmphasisShapeKeyword};
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use crate::values::{CSSFloat, CSSInteger};
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use crate::Zero;
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use std::fmt::{self, Write};
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use style_traits::{CssWriter, ToCss};
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pub use crate::values::specified::text::{
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HyphenateCharacter, LineBreak, MozControlCharacterVisibility, OverflowWrap, RubyPosition,
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TextAlignLast, TextDecorationLine, TextDecorationSkipInk, TextEmphasisPosition, TextJustify,
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TextOverflow, TextTransform, TextUnderlinePosition, WordBreak,
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};
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/// A computed value for the `initial-letter` property.
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pub type InitialLetter = GenericInitialLetter<CSSFloat, CSSInteger>;
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/// Implements type for `text-decoration-thickness` property.
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pub type TextDecorationLength = GenericTextDecorationLength<LengthPercentage>;
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/// The computed value of `text-align`.
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pub type TextAlign = specified::TextAlignKeyword;
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/// The computed value of `text-indent`.
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pub type TextIndent = GenericTextIndent<LengthPercentage>;
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/// A computed value for the `hyphenate-character` property.
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pub type HyphenateLimitChars = GenericHyphenateLimitChars<CSSInteger>;
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impl HyphenateLimitChars {
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/// Return the `auto` value, which has all three component values as `auto`.
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#[inline]
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pub fn auto() -> Self {
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Self {
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total_word_length: NumberOrAuto::Auto,
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pre_hyphen_length: NumberOrAuto::Auto,
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post_hyphen_length: NumberOrAuto::Auto,
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}
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}
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}
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/// A computed value for the `letter-spacing` property.
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#[repr(transparent)]
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#[derive(
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Animate,
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Clone,
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ComputeSquaredDistance,
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Copy,
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Debug,
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MallocSizeOf,
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PartialEq,
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ToAnimatedValue,
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ToAnimatedZero,
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ToResolvedValue,
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)]
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pub struct GenericLetterSpacing<L>(pub L);
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/// This is generic just to make the #[derive()] code do the right thing for lengths.
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pub type LetterSpacing = GenericLetterSpacing<LengthPercentage>;
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impl LetterSpacing {
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/// Return the `normal` computed value, which is just zero.
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#[inline]
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pub fn normal() -> Self {
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Self(LengthPercentage::zero())
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}
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}
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impl ToCss for LetterSpacing {
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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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// https://drafts.csswg.org/css-text/#propdef-letter-spacing
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//
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// For legacy reasons, a computed letter-spacing of zero yields a
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// resolved value (getComputedStyle() return value) of normal.
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if self.0.is_zero() {
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return dest.write_str("normal");
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}
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self.0.to_css(dest)
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}
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}
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/// A computed value for the `word-spacing` property.
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pub type WordSpacing = LengthPercentage;
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impl WordSpacing {
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/// Return the `normal` computed value, which is just zero.
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#[inline]
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pub fn normal() -> Self {
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LengthPercentage::zero()
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}
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}
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/// Computed value for the text-emphasis-style property
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#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToCss, ToResolvedValue)]
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#[allow(missing_docs)]
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#[repr(C, u8)]
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pub enum TextEmphasisStyle {
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/// [ <fill> || <shape> ]
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Keyword {
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#[css(skip_if = "TextEmphasisFillMode::is_filled")]
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fill: TextEmphasisFillMode,
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shape: TextEmphasisShapeKeyword,
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},
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/// `none`
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None,
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/// `<string>` (of which only the first grapheme cluster will be used).
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String(crate::OwnedStr),
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}
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