Struct style::context::SharedStyleContext

pub struct SharedStyleContext<'a> {
    pub stylist: &'a Stylist,
    pub visited_styles_enabled: bool,
    pub options: StyleSystemOptions,
    pub guards: StylesheetGuards<'a>,
    pub timer: Timer,
    pub traversal_flags: TraversalFlags,
    pub snapshot_map: &'a SnapshotMap,
    pub running_animations: Arc<RwLock<FnvHashMap<OpaqueNode, Vec<Animation>>>>,
    pub expired_animations: Arc<RwLock<FnvHashMap<OpaqueNode, Vec<Animation>>>>,
    pub registered_speculative_painters: &'a RegisteredSpeculativePainters,
    pub local_context_creation_data: Mutex<ThreadLocalStyleContextCreationInfo>,
}

A shared style context.

There's exactly one of these during a given restyle traversal, and it's shared among the worker threads.

Fields

stylist: &'a Stylist

The CSS selector stylist.

visited_styles_enabled: bool

Whether visited styles are enabled.

They may be disabled when Gecko's pref layout.css.visited_links_enabled is false, or when in private browsing mode.

options: StyleSystemOptions

Configuration options.

guards: StylesheetGuards<'a>

Guards for pre-acquired locks

timer: Timer

The current timer for transitions and animations. This is needed to test them.

traversal_flags: TraversalFlags

Flags controlling how we traverse the tree.

snapshot_map: &'a SnapshotMap

A map with our snapshots in order to handle restyle hints.

running_animations: Arc<RwLock<FnvHashMap<OpaqueNode, Vec<Animation>>>>

The animations that are currently running.

expired_animations: Arc<RwLock<FnvHashMap<OpaqueNode, Vec<Animation>>>>

The list of animations that have expired since the last style recalculation.

registered_speculative_painters: &'a RegisteredSpeculativePainters

Paint worklets

local_context_creation_data: Mutex<ThreadLocalStyleContextCreationInfo>

Data needed to create the thread-local style context from the shared one.

Methods

impl<'a> SharedStyleContext<'a>

pub fn viewport_size(&self) -> Size2D<Au>

Return a suitable viewport size in order to be used for viewport units.

pub fn device_pixel_ratio(&self) -> TypedScale<f32, CSSPixel, DevicePixel>

The device pixel ratio

pub fn quirks_mode(&self) -> QuirksMode

The quirks mode of the document.