Name Description Size CSS transitions and animations. 53271 Applicable declarations management. 7517 Parsed representations of [DOM attributes][attr]. [attr]: 18838 A set of author stylesheets and their computed representation, such as the ones used for ShadowRoot. 2705 Parametric Bézier curves. This is based on `WebCore/platform/graphics/UnitBezier.h` in WebKit. 4876 The style bloom filter is used as an optimization when matching deep descendant selectors. 14422 2693 13391
Cargo.toml 2805
color The context within which style is calculated. 25535
counter_style Support for [custom properties for cascading variables][custom]. [custom]: 44329 Per-node data used in style calculation. 18437 Types and traits used to access the DOM from style calculation. 34701 Generic implementations of some DOM APIs so they can be shared between Servo and Gecko. 21658 Implements traversal over the DOM tree. The traversal starts in sequential mode, and optionally parallelizes as it discovers work. 7702 Parsing stylesheets from bytes (not `&str`). 3454 Types used to report parsing errors. 12313 The [`@font-face`][ff] at-rule. [ff]: 27156 Access to font metrics from the style system. 2146
gecko_string_cache Global style data 6461
invalidation Calculate [specified][specified] and [computed values][computed] from a tree of DOM nodes and a set of stylesheets. [computed]: [specified]: In particular, this crate contains the definitions of supported properties, the code to parse them into specified values and calculate the computed values based on the specified values, as well as the code to serialize both specified and computed values. The main entry point is [`recalc_style_at`][recalc_style_at]. [recalc_style_at]: traversal/fn.recalc_style_at.html Major dependencies are the [cssparser][cssparser] and [selectors][selectors] crates. [cssparser]: ../cssparser/index.html [selectors]: ../selectors/index.html 9166 Geometry in flow-relative space. 45051 Various macro helpers. 2663 High-level interface to CSS selector matching. 40563
media_queries Implements parallel traversal over the DOM tree. This traversal is based on Rayon, and therefore its safety is largely verified by the type system. The primary trickiness and fine print for the above relates to the thread safety of the DOM nodes themselves. Accessing a DOM element concurrently on multiple threads is actually mostly "safe", since all the mutable state is protected by an AtomicRefCell, and so we'll generally panic if something goes wrong. Still, we try to to enforce our thread invariants at compile time whenever possible. As such, TNode and TElement are not Send, so ordinary style system code cannot accidentally share them with other threads. In the parallel traversal, we explicitly invoke |unsafe { SendNode::new(n) }| to put nodes in containers that may be sent to other threads. This occurs in only a handful of places and is easy to grep for. At the time of this writing, there is no other unsafe code in the parallel traversal. 13064 The context within which CSS code is parsed. 7053 A piecewise linear function, following CSS linear easing 10562
queries servo-style 216 A cache from rule node to computed values, in order to cache reset properties. 6226 Collects a series of applicable rules for a given element. 18168
rule_tree Stack-scoped thread-local storage for rayon thread pools. 2701 A data structure to efficiently index structs containing selectors by local name, ids and hash. 28370 The pseudo-classes and pseudo-elements supported by the style system. 7915
servo Different objects protected by the same lock 12349
sharing String utils for attributes and similar stuff. 5307 A struct to encapsulate all the style fixups and flags propagations a computed style needs in order for it to adhere to the CSS spec. 37628 Style resolution for a given element or pseudo-element. 19313 A centralized set of stylesheets for a document. 22652
stylesheets Selector matching. 114170 Supports dynamic assertions in about what sort of thread is running and what state it's in. 2656 Traversing the DOM tree; the bloom filter. 31710 Flags that control the traversal process. We CamelCase rather than UPPER_CASING so that we can grep for the same strings across gecko and servo. 2778