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style: Add page-size parsing to Servo
Differential Revision: https://phabricator.services.mozilla.com/D102360
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6 changed files with 183 additions and 0 deletions
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@ -71,6 +71,7 @@ pub use self::list::MozListReversed;
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pub use self::list::Quotes;
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pub use self::motion::{OffsetPath, OffsetRotate};
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pub use self::outline::OutlineStyle;
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pub use self::page::{Orientation, PaperSize, PageSize};
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pub use self::percentage::{NonNegativePercentage, Percentage};
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pub use self::position::AspectRatio;
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pub use self::position::{
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@ -118,6 +119,7 @@ pub mod length_percentage;
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pub mod list;
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pub mod motion;
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pub mod outline;
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pub mod page;
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pub mod percentage;
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pub mod position;
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pub mod rect;
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14
components/style/values/computed/page.rs
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14
components/style/values/computed/page.rs
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@ -0,0 +1,14 @@
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/* 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 @page at-rule properties
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use crate::values::computed::length::NonNegativeLength;
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use crate::values::generics;
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use crate::values::generics::size::Size2D;
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pub use generics::page::Orientation;
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pub use generics::page::PaperSize;
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/// Computed value of the @page size descriptor
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pub type PageSize = generics::page::PageSize<Size2D<NonNegativeLength>>;
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@ -31,6 +31,7 @@ pub mod grid;
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pub mod image;
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pub mod length;
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pub mod motion;
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pub mod page;
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pub mod position;
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pub mod rect;
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pub mod size;
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@ -292,3 +293,5 @@ impl<L> ClipRectOrAuto<L> {
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matches!(*self, ClipRectOrAuto::Auto)
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}
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}
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pub use page::PageSize;
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114
components/style/values/generics/page.rs
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114
components/style/values/generics/page.rs
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@ -0,0 +1,114 @@
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/* 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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//! @page at-rule properties
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/// Page size names.
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///
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/// https://drafts.csswg.org/css-page-3/#typedef-page-size-page-size
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#[derive(
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Clone,
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Copy,
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Debug,
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Eq,
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MallocSizeOf,
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Parse,
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PartialEq,
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SpecifiedValueInfo,
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ToComputedValue,
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ToCss,
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ToResolvedValue,
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ToShmem,
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)]
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#[repr(u8)]
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pub enum PaperSize {
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/// ISO A5 media
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A5,
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/// ISO A4 media
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A4,
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/// ISO A3 media
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A3,
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/// ISO B5 media
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B5,
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/// ISO B4 media
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B4,
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/// JIS B5 media
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JisB5,
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/// JIS B4 media
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JisB4,
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/// North American Letter size
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Letter,
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/// North American Legal size
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Legal,
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/// North American Ledger size
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Ledger,
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}
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/// Paper orientation
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///
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/// https://drafts.csswg.org/css-page-3/#page-size-prop
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#[derive(
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Clone,
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Copy,
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Debug,
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Eq,
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MallocSizeOf,
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Parse,
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PartialEq,
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SpecifiedValueInfo,
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ToComputedValue,
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ToCss,
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ToResolvedValue,
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ToShmem,
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)]
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#[repr(u8)]
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pub enum Orientation {
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/// Portrait orientation
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Portrait,
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/// Landscape orientation
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Landscape,
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}
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/// Page size property
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///
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/// https://drafts.csswg.org/css-page-3/#page-size-prop
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#[derive(
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Clone,
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Copy,
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Debug,
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MallocSizeOf,
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PartialEq,
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SpecifiedValueInfo,
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ToComputedValue,
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ToCss,
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ToResolvedValue,
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ToShmem,
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)]
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#[repr(C, u8)]
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pub enum PageSize<S> {
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/// Page dimensions.
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Size(S),
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/// Paper size with no orientation.
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PaperSize(PaperSize),
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/// An orientation with no size.
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Orientation(Orientation),
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/// Paper size by name, with an orientation.
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PaperSizeAndOrientation(PaperSize, Orientation),
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/// `auto` value.
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Auto,
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}
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impl<S> PageSize<S> {
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/// `auto` value.
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#[inline]
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pub fn auto() -> Self {
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PageSize::Auto
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}
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/// Whether this is the `auto` value.
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#[inline]
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pub fn is_auto(&self) -> bool {
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matches!(*self, PageSize::Auto)
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}
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}
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@ -70,6 +70,7 @@ pub use self::list::MozListReversed;
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pub use self::list::Quotes;
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pub use self::motion::{OffsetPath, OffsetRotate};
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pub use self::outline::OutlineStyle;
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pub use self::page::{Orientation, PaperSize, PageSize};
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pub use self::percentage::Percentage;
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pub use self::position::AspectRatio;
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pub use self::position::{
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@ -121,6 +122,7 @@ pub mod list;
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pub mod motion;
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pub mod outline;
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pub mod percentage;
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pub mod page;
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pub mod position;
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pub mod rect;
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pub mod resolution;
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48
components/style/values/specified/page.rs
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48
components/style/values/specified/page.rs
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@ -0,0 +1,48 @@
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/* 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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//! Specified @page at-rule properties
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use crate::parser::{Parse, ParserContext};
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use crate::values::generics;
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use crate::values::generics::size::Size2D;
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use crate::values::specified::length::NonNegativeLength;
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use cssparser::Parser;
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use style_traits::ParseError;
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pub use generics::page::Orientation;
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pub use generics::page::PaperSize;
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/// Specified value of the @page size descriptor
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pub type PageSize = generics::page::PageSize<Size2D<NonNegativeLength>>;
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impl Parse for PageSize {
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fn parse<'i, 't>(
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context: &ParserContext,
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input: &mut Parser<'i, 't>,
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) -> Result<Self, ParseError<'i>> {
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// Try to parse as <page-size> [ <orientation> ]
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if let Ok(paper_size) = input.try_parse(PaperSize::parse) {
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if let Ok(orientation) = input.try_parse(Orientation::parse) {
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return Ok(PageSize::PaperSizeAndOrientation(paper_size, orientation));
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}
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return Ok(PageSize::PaperSize(paper_size));
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}
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// Try to parse as <orientation> [ <page-size> ]
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if let Ok(orientation) = input.try_parse(Orientation::parse) {
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if let Ok(paper_size) = input.try_parse(PaperSize::parse) {
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return Ok(PageSize::PaperSizeAndOrientation(paper_size, orientation));
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}
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return Ok(PageSize::Orientation(orientation));
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}
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// Try to parse dimensions
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if let Ok(size) =
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input.try_parse(|i| Size2D::parse_with(context, i, NonNegativeLength::parse))
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{
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return Ok(PageSize::Size(size));
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}
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// auto value
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input.expect_ident_matching("auto")?;
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Ok(PageSize::Auto)
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}
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}
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