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Diffstat (limited to 'servo/components/style/values/specified/ui.rs')
| -rw-r--r-- | servo/components/style/values/specified/ui.rs | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/servo/components/style/values/specified/ui.rs b/servo/components/style/values/specified/ui.rs new file mode 100644 index 0000000000..0c656faab2 --- /dev/null +++ b/servo/components/style/values/specified/ui.rs @@ -0,0 +1,232 @@ +/* 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 https://mozilla.org/MPL/2.0/. */ + +//! Specified types for UI properties. + +use crate::parser::{Parse, ParserContext}; +use crate::values::generics::ui as generics; +use crate::values::specified::color::Color; +use crate::values::specified::image::Image; +use crate::values::specified::Number; +use cssparser::Parser; +use std::fmt::{self, Write}; +use style_traits::{ + CssWriter, KeywordsCollectFn, ParseError, SpecifiedValueInfo, StyleParseErrorKind, ToCss, +}; + +/// A specified value for the `cursor` property. +pub type Cursor = generics::GenericCursor<CursorImage>; + +/// A specified value for item of `image cursors`. +pub type CursorImage = generics::GenericCursorImage<Image, Number>; + +impl Parse for Cursor { + /// cursor: [<url> [<number> <number>]?]# [auto | default | ...] + fn parse<'i, 't>( + context: &ParserContext, + input: &mut Parser<'i, 't>, + ) -> Result<Self, ParseError<'i>> { + let mut images = vec![]; + loop { + match input.try_parse(|input| CursorImage::parse(context, input)) { + Ok(image) => images.push(image), + Err(_) => break, + } + input.expect_comma()?; + } + Ok(Self { + images: images.into(), + keyword: CursorKind::parse(input)?, + }) + } +} + +impl Parse for CursorImage { + fn parse<'i, 't>( + context: &ParserContext, + input: &mut Parser<'i, 't>, + ) -> Result<Self, ParseError<'i>> { + use crate::Zero; + + let image = Image::parse_only_url(context, input)?; + let mut has_hotspot = false; + let mut hotspot_x = Number::zero(); + let mut hotspot_y = Number::zero(); + + if let Ok(x) = input.try_parse(|input| Number::parse(context, input)) { + has_hotspot = true; + hotspot_x = x; + hotspot_y = Number::parse(context, input)?; + } + + Ok(Self { + image, + has_hotspot, + hotspot_x, + hotspot_y, + }) + } +} + +// This trait is manually implemented because we don't support the whole <image> +// syntax for cursors +impl SpecifiedValueInfo for CursorImage { + fn collect_completion_keywords(f: KeywordsCollectFn) { + f(&["url", "image-set"]); + } +} +/// Specified value of `-moz-force-broken-image-icon` +#[derive( + Clone, + Copy, + Debug, + MallocSizeOf, + PartialEq, + SpecifiedValueInfo, + ToComputedValue, + ToResolvedValue, + ToShmem, +)] +#[repr(transparent)] +pub struct BoolInteger(pub bool); + +impl BoolInteger { + /// Returns 0 + #[inline] + pub fn zero() -> Self { + Self(false) + } +} + +impl Parse for BoolInteger { + fn parse<'i, 't>( + _context: &ParserContext, + input: &mut Parser<'i, 't>, + ) -> Result<Self, ParseError<'i>> { + // We intentionally don't support calc values here. + match input.expect_integer()? { + 0 => Ok(Self(false)), + 1 => Ok(Self(true)), + _ => Err(input.new_custom_error(StyleParseErrorKind::UnspecifiedError)), + } + } +} + +impl ToCss for BoolInteger { + fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result + where + W: Write, + { + dest.write_str(if self.0 { "1" } else { "0" }) + } +} + +/// A specified value for `scrollbar-color` property +pub type ScrollbarColor = generics::ScrollbarColor<Color>; + +impl Parse for ScrollbarColor { + fn parse<'i, 't>( + context: &ParserContext, + input: &mut Parser<'i, 't>, + ) -> Result<Self, ParseError<'i>> { + if input.try_parse(|i| i.expect_ident_matching("auto")).is_ok() { + return Ok(generics::ScrollbarColor::Auto); + } + Ok(generics::ScrollbarColor::Colors { + thumb: Color::parse(context, input)?, + track: Color::parse(context, input)?, + }) + } +} + +/// The specified value for the `user-select` property. +/// +/// https://drafts.csswg.org/css-ui-4/#propdef-user-select +#[allow(missing_docs)] +#[derive( + Clone, + Copy, + Debug, + Eq, + MallocSizeOf, + Parse, + PartialEq, + SpecifiedValueInfo, + ToComputedValue, + ToCss, + ToResolvedValue, + ToShmem, +)] +#[repr(u8)] +pub enum UserSelect { + Auto, + Text, + #[parse(aliases = "-moz-none")] + None, + /// Force selection of all children. + All, +} + +/// The keywords allowed in the Cursor property. +/// +/// https://drafts.csswg.org/css-ui-4/#propdef-cursor +#[allow(missing_docs)] +#[derive( + Clone, + Copy, + Debug, + Eq, + FromPrimitive, + MallocSizeOf, + Parse, + PartialEq, + SpecifiedValueInfo, + ToComputedValue, + ToCss, + ToResolvedValue, + ToShmem, +)] +#[repr(u8)] +pub enum CursorKind { + None, + Default, + Pointer, + ContextMenu, + Help, + Progress, + Wait, + Cell, + Crosshair, + Text, + VerticalText, + Alias, + Copy, + Move, + NoDrop, + NotAllowed, + #[parse(aliases = "-moz-grab")] + Grab, + #[parse(aliases = "-moz-grabbing")] + Grabbing, + EResize, + NResize, + NeResize, + NwResize, + SResize, + SeResize, + SwResize, + WResize, + EwResize, + NsResize, + NeswResize, + NwseResize, + ColResize, + RowResize, + AllScroll, + #[parse(aliases = "-moz-zoom-in")] + ZoomIn, + #[parse(aliases = "-moz-zoom-out")] + ZoomOut, + Auto, +} |