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Added a fast no-message RPC interface to the layout task.

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Clark Gaebel 2014-08-26 17:02:18 -07:00
parent ff97135ab9
commit dafd0b652d
5 changed files with 319 additions and 271 deletions
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25
src/components/script/layout_interface.rs
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@ -25,8 +25,6 @@ use url::Url;
use serialize::{Encodable, Encoder};
/// Asynchronous messages that script can send to layout.
///
/// FIXME(pcwalton): I think this should probably be merged with `LayoutQuery` below.
pub enum Msg {
/// Adds the given stylesheet to the document.
AddStylesheetMsg(Stylesheet),
@ -34,10 +32,8 @@ pub enum Msg {
/// Requests a reflow.
ReflowMsg(Box<Reflow>),
/// Performs a synchronous layout request.
///
/// FIXME(pcwalton): As noted below, this isn't very type safe.
QueryMsg(LayoutQuery),
/// Get an RPC interface.
GetRPCMsg(Sender<Box<LayoutRPC + Send>>),
/// Destroys layout data associated with a DOM node.
///
@ -55,14 +51,21 @@ pub enum Msg {
}
/// Synchronous messages that script can send to layout.
pub enum LayoutQuery {
///
/// In general, you should use messages to talk to Layout. Use the RPC interface
/// if and only if the work is
///
/// 1) read-only with respect to LayoutTaskData,
/// 2) small,
// 3) and really needs to be fast.
pub trait LayoutRPC {
/// Requests the dimensions of the content box, as in the `getBoundingClientRect()` call.
ContentBoxQuery(TrustedNodeAddress, Sender<ContentBoxResponse>),
fn content_box(&self, node: TrustedNodeAddress) -> ContentBoxResponse;
/// Requests the dimensions of all the content boxes, as in the `getClientRects()` call.
ContentBoxesQuery(TrustedNodeAddress, Sender<ContentBoxesResponse>),
fn content_boxes(&self, node: TrustedNodeAddress) -> ContentBoxesResponse;
/// Requests the node containing the point of interest
HitTestQuery(TrustedNodeAddress, Point2D<f32>, Sender<Result<HitTestResponse, ()>>),
MouseOverQuery(TrustedNodeAddress, Point2D<f32>, Sender<Result<MouseOverResponse, ()>>),
fn hit_test(&self, node: TrustedNodeAddress, point: Point2D<f32>) -> Result<HitTestResponse, ()>;
fn mouse_over(&self, node: TrustedNodeAddress, point: Point2D<f32>) -> Result<MouseOverResponse, ()>;
}
/// The address of a node known to be valid. These must only be sent from content -> layout,