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384cdfcfff
The pipeline id stuff is currently unused. If someone needs it, they can add an additional trait bound on their css error reporter to get the pipeline id.
74 lines
2.4 KiB
Rust
74 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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use animation::Animation;
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use app_units::Au;
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use dom::OpaqueNode;
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use error_reporting::ParseErrorReporter;
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use euclid::Size2D;
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use matching::{ApplicableDeclarationsCache, StyleSharingCandidateCache};
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use selector_matching::Stylist;
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use std::cell::RefCell;
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use std::collections::HashMap;
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use std::sync::mpsc::Sender;
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use std::sync::{Arc, Mutex, RwLock};
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pub struct StylistWrapper(pub *const Stylist);
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// FIXME(#6569) This implementation is unsound.
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#[allow(unsafe_code)]
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unsafe impl Sync for StylistWrapper {}
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pub struct SharedStyleContext {
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/// The current viewport size.
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pub viewport_size: Size2D<Au>,
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/// Screen sized changed?
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pub screen_size_changed: bool,
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/// The CSS selector stylist.
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///
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/// FIXME(#2604): Make this no longer an unsafe pointer once we have fast `RWArc`s.
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pub stylist: StylistWrapper,
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/// Starts at zero, and increased by one every time a layout completes.
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/// This can be used to easily check for invalid stale data.
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pub generation: u32,
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/// A channel on which new animations that have been triggered by style recalculation can be
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/// sent.
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pub new_animations_sender: Mutex<Sender<Animation>>,
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/// Why is this reflow occurring
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pub goal: ReflowGoal,
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/// The animations that are currently running.
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pub running_animations: Arc<RwLock<HashMap<OpaqueNode, Vec<Animation>>>>,
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/// The list of animations that have expired since the last style recalculation.
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pub expired_animations: Arc<RwLock<HashMap<OpaqueNode, Vec<Animation>>>>,
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///The CSS error reporter for all CSS loaded in this layout thread
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pub error_reporter: Box<ParseErrorReporter + Sync>,
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}
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pub struct LocalStyleContext {
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pub applicable_declarations_cache: RefCell<ApplicableDeclarationsCache>,
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pub style_sharing_candidate_cache: RefCell<StyleSharingCandidateCache>,
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}
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pub trait StyleContext<'a> {
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fn shared_context(&self) -> &'a SharedStyleContext;
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fn local_context(&self) -> &LocalStyleContext;
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}
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/// Why we're doing reflow.
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#[derive(PartialEq, Copy, Clone, Debug)]
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pub enum ReflowGoal {
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/// We're reflowing in order to send a display list to the screen.
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ForDisplay,
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/// We're reflowing in order to satisfy a script query. No display list will be created.
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ForScriptQuery,
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}
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