summaryrefslogtreecommitdiffstats
path: root/servo/components/style/values/specified/background.rs
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /servo/components/style/values/specified/background.rs
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'servo/components/style/values/specified/background.rs')
-rw-r--r--servo/components/style/values/specified/background.rs143
1 files changed, 143 insertions, 0 deletions
diff --git a/servo/components/style/values/specified/background.rs b/servo/components/style/values/specified/background.rs
new file mode 100644
index 0000000000..39a5a85193
--- /dev/null
+++ b/servo/components/style/values/specified/background.rs
@@ -0,0 +1,143 @@
+/* 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 CSS values related to backgrounds.
+
+use crate::parser::{Parse, ParserContext};
+use crate::values::generics::background::BackgroundSize as GenericBackgroundSize;
+use crate::values::specified::length::{
+ NonNegativeLengthPercentage, NonNegativeLengthPercentageOrAuto,
+};
+use cssparser::Parser;
+use selectors::parser::SelectorParseErrorKind;
+use std::fmt::{self, Write};
+use style_traits::{CssWriter, ParseError, ToCss};
+
+/// A specified value for the `background-size` property.
+pub type BackgroundSize = GenericBackgroundSize<NonNegativeLengthPercentage>;
+
+impl Parse for BackgroundSize {
+ fn parse<'i, 't>(
+ context: &ParserContext,
+ input: &mut Parser<'i, 't>,
+ ) -> Result<Self, ParseError<'i>> {
+ if let Ok(width) = input.try_parse(|i| NonNegativeLengthPercentageOrAuto::parse(context, i))
+ {
+ let height = input
+ .try_parse(|i| NonNegativeLengthPercentageOrAuto::parse(context, i))
+ .unwrap_or(NonNegativeLengthPercentageOrAuto::auto());
+ return Ok(GenericBackgroundSize::ExplicitSize { width, height });
+ }
+ Ok(try_match_ident_ignore_ascii_case! { input,
+ "cover" => GenericBackgroundSize::Cover,
+ "contain" => GenericBackgroundSize::Contain,
+ })
+ }
+}
+
+/// One of the keywords for `background-repeat`.
+#[derive(
+ Clone,
+ Copy,
+ Debug,
+ Eq,
+ MallocSizeOf,
+ Parse,
+ PartialEq,
+ SpecifiedValueInfo,
+ ToComputedValue,
+ ToCss,
+ ToResolvedValue,
+ ToShmem,
+)]
+#[allow(missing_docs)]
+#[value_info(other_values = "repeat-x,repeat-y")]
+pub enum BackgroundRepeatKeyword {
+ Repeat,
+ Space,
+ Round,
+ NoRepeat,
+}
+
+/// The value of the `background-repeat` property, with `repeat-x` / `repeat-y`
+/// represented as the combination of `no-repeat` and `repeat` in the opposite
+/// axes.
+///
+/// https://drafts.csswg.org/css-backgrounds/#the-background-repeat
+#[derive(
+ Clone,
+ Debug,
+ MallocSizeOf,
+ PartialEq,
+ SpecifiedValueInfo,
+ ToComputedValue,
+ ToResolvedValue,
+ ToShmem,
+)]
+pub struct BackgroundRepeat(pub BackgroundRepeatKeyword, pub BackgroundRepeatKeyword);
+
+impl BackgroundRepeat {
+ /// Returns the `repeat repeat` value.
+ pub fn repeat() -> Self {
+ BackgroundRepeat(
+ BackgroundRepeatKeyword::Repeat,
+ BackgroundRepeatKeyword::Repeat,
+ )
+ }
+}
+
+impl ToCss for BackgroundRepeat {
+ fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
+ where
+ W: Write,
+ {
+ match (self.0, self.1) {
+ (BackgroundRepeatKeyword::Repeat, BackgroundRepeatKeyword::NoRepeat) => {
+ dest.write_str("repeat-x")
+ },
+ (BackgroundRepeatKeyword::NoRepeat, BackgroundRepeatKeyword::Repeat) => {
+ dest.write_str("repeat-y")
+ },
+ (horizontal, vertical) => {
+ horizontal.to_css(dest)?;
+ if horizontal != vertical {
+ dest.write_char(' ')?;
+ vertical.to_css(dest)?;
+ }
+ Ok(())
+ },
+ }
+ }
+}
+
+impl Parse for BackgroundRepeat {
+ fn parse<'i, 't>(
+ _context: &ParserContext,
+ input: &mut Parser<'i, 't>,
+ ) -> Result<Self, ParseError<'i>> {
+ let ident = input.expect_ident_cloned()?;
+
+ match_ignore_ascii_case! { &ident,
+ "repeat-x" => {
+ return Ok(BackgroundRepeat(BackgroundRepeatKeyword::Repeat, BackgroundRepeatKeyword::NoRepeat));
+ },
+ "repeat-y" => {
+ return Ok(BackgroundRepeat(BackgroundRepeatKeyword::NoRepeat, BackgroundRepeatKeyword::Repeat));
+ },
+ _ => {},
+ }
+
+ let horizontal = match BackgroundRepeatKeyword::from_ident(&ident) {
+ Ok(h) => h,
+ Err(()) => {
+ return Err(
+ input.new_custom_error(SelectorParseErrorKind::UnexpectedIdent(ident.clone()))
+ );
+ },
+ };
+
+ let vertical = input.try_parse(BackgroundRepeatKeyword::parse).ok();
+ Ok(BackgroundRepeat(horizontal, vertical.unwrap_or(horizontal)))
+ }
+}