196912c9bf
Now that rustfmt is getting close to stable, and work on the style system has died down a bit, it seemed like an opportune time to auto-format the style crates. The first commit disables import reordering, since tidy and rustfmt don't currently agree on the correct ordering. The second commit does a bunch of manual fixups such that the output of rustfmt passes tidy. The third commit runs rustfmt on the three aforementioned crate. There are a few dozen warnings in the style crate about lines longer than 100 characters. It would be good to fix these, but I don't have time for that now. Source-Repo: https://github.com/servo/servo Source-Revision: 9a900ef019cd643bff961d7b20db6da69f3edb29
72 lines
2.4 KiB
Rust
72 lines
2.4 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 http://mozilla.org/MPL/2.0/. */
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//! A [`@page`][page] rule.
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//!
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//! [page]: https://drafts.csswg.org/css2/page.html#page-box
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use cssparser::SourceLocation;
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#[cfg(feature = "gecko")]
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use malloc_size_of::{MallocSizeOf, MallocSizeOfOps, MallocUnconditionalShallowSizeOf};
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use properties::PropertyDeclarationBlock;
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use servo_arc::Arc;
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use shared_lock::{DeepCloneParams, DeepCloneWithLock, Locked};
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use shared_lock::{SharedRwLock, SharedRwLockReadGuard, ToCssWithGuard};
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use std::fmt::{self, Write};
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use str::CssStringWriter;
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/// A [`@page`][page] rule.
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///
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/// This implements only a limited subset of the CSS
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/// 2.2 syntax.
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///
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/// In this subset, [page selectors][page-selectors] are not implemented.
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///
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/// [page]: https://drafts.csswg.org/css2/page.html#page-box
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/// [page-selectors]: https://drafts.csswg.org/css2/page.html#page-selectors
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#[derive(Debug)]
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pub struct PageRule {
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/// The declaration block this page rule contains.
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pub block: Arc<Locked<PropertyDeclarationBlock>>,
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/// The source position this rule was found at.
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pub source_location: SourceLocation,
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}
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impl PageRule {
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/// Measure heap usage.
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#[cfg(feature = "gecko")]
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pub fn size_of(&self, guard: &SharedRwLockReadGuard, ops: &mut MallocSizeOfOps) -> usize {
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// Measurement of other fields may be added later.
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self.block.unconditional_shallow_size_of(ops) + self.block.read_with(guard).size_of(ops)
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}
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}
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impl ToCssWithGuard for PageRule {
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/// Serialization of PageRule is not specced, adapted from steps for
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/// StyleRule.
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fn to_css(&self, guard: &SharedRwLockReadGuard, dest: &mut CssStringWriter) -> fmt::Result {
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dest.write_str("@page { ")?;
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let declaration_block = self.block.read_with(guard);
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declaration_block.to_css(dest)?;
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if !declaration_block.declarations().is_empty() {
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dest.write_str(" ")?;
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}
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dest.write_str("}")
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}
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}
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impl DeepCloneWithLock for PageRule {
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fn deep_clone_with_lock(
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&self,
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lock: &SharedRwLock,
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guard: &SharedRwLockReadGuard,
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_params: &DeepCloneParams,
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) -> Self {
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PageRule {
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block: Arc::new(lock.wrap(self.block.read_with(&guard).clone())),
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source_location: self.source_location.clone(),
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}
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}
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}
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