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Switch to using WebRender hit testing

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This trades quite a bit of complicated code in Servo for few more
messages and a significant performance improvement. In particular,
WebRender can search the entire display list at once instead of
ping-ponging down the pipeline tree. This allows us to send mouse
events to the correct pipeline immediately.
This commit is contained in:
Martin Robinson 2017-09-30 15:50:47 +02:00
parent 00e2a1c62a
commit b5d51dd263
20 changed files with 381 additions and 555 deletions
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31
components/layout/query.rs
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@ -10,16 +10,15 @@ use context::LayoutContext;
use euclid::{Point2D, Vector2D, Rect, Size2D};
use flow::{self, Flow};
use fragment::{Fragment, FragmentBorderBoxIterator, SpecificFragmentInfo};
use gfx::display_list::{DisplayItemMetadata, DisplayList, OpaqueNode, ScrollOffsetMap};
use gfx::display_list::{DisplayList, OpaqueNode, ScrollOffsetMap};
use inline::LAST_FRAGMENT_OF_ELEMENT;
use ipc_channel::ipc::IpcSender;
use msg::constellation_msg::PipelineId;
use opaque_node::OpaqueNodeMethods;
use script_layout_interface::rpc::{ContentBoxResponse, ContentBoxesResponse};
use script_layout_interface::rpc::{HitTestResponse, LayoutRPC};
use script_layout_interface::rpc::{ContentBoxResponse, ContentBoxesResponse, LayoutRPC};
use script_layout_interface::rpc::{MarginStyleResponse, NodeGeometryResponse};
use script_layout_interface::rpc::{NodeOverflowResponse, OffsetParentResponse};
use script_layout_interface::rpc::{NodeScrollRootIdResponse, ResolvedStyleResponse, TextIndexResponse};
use script_layout_interface::rpc::{NodeOverflowResponse, NodeScrollRootIdResponse};
use script_layout_interface::rpc::{OffsetParentResponse, ResolvedStyleResponse, TextIndexResponse};
use script_layout_interface::wrapper_traits::{LayoutNode, ThreadSafeLayoutElement, ThreadSafeLayoutNode};
use script_traits::LayoutMsg as ConstellationMsg;
use script_traits::UntrustedNodeAddress;
@ -35,7 +34,6 @@ use style::properties::{style_structs, PropertyId, PropertyDeclarationId, Longha
use style::properties::longhands::{display, position};
use style::selector_parser::PseudoElement;
use style_traits::ToCss;
use style_traits::cursor::Cursor;
use webrender_api::ClipId;
use wrapper::LayoutNodeLayoutData;
@ -58,9 +56,6 @@ pub struct LayoutThreadData {
/// A queued response for the client {top, left, width, height} of a node in pixels.
pub client_rect_response: Rect<i32>,
/// A queued response for the node at a given point
pub hit_test_response: (Option<DisplayItemMetadata>, bool),
/// A queued response for the scroll root id for a given node.
pub scroll_root_id_response: Option<ClipId>,
@ -119,24 +114,6 @@ impl LayoutRPC for LayoutRPCImpl {
ContentBoxesResponse(rw_data.content_boxes_response.clone())
}
/// Requests the node containing the point of interest.
fn hit_test(&self) -> HitTestResponse {
let &LayoutRPCImpl(ref rw_data) = self;
let rw_data = rw_data.lock().unwrap();
let &(ref result, update_cursor) = &rw_data.hit_test_response;
if update_cursor {
// Compute the new cursor.
let cursor = match *result {
None => Cursor::Default,
Some(dim) => dim.pointing.unwrap(),
};
rw_data.constellation_chan.send(ConstellationMsg::SetCursor(cursor)).unwrap();
}
HitTestResponse {
node_address: result.map(|dim| dim.node.to_untrusted_node_address()),
}
}
fn nodes_from_point_response(&self) -> Vec<UntrustedNodeAddress> {
let &LayoutRPCImpl(ref rw_data) = self;
let rw_data = rw_data.lock().unwrap();