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https://github.com/servo/servo.git
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d150cc9f95
Just use WebRender's ClipId directly. This will allow us to create and use ReferenceFrames in the future, if we need to do that. It will also make it easier to have Servo responsible for creating the root scrolling area, which will allow removing some old hacks in the future.
102 lines
3.7 KiB
Rust
102 lines
3.7 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 PendingImage;
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use app_units::Au;
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use euclid::point::Point2D;
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use euclid::rect::Rect;
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use script_traits::UntrustedNodeAddress;
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use style::properties::longhands::{margin_top, margin_right, margin_bottom, margin_left, overflow_x};
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use webrender_traits::ClipId;
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/// Synchronous messages that script can send to layout.
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///
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/// In general, you should use messages to talk to Layout. Use the RPC interface
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/// if and only if the work is
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///
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/// 1) read-only with respect to LayoutThreadData,
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/// 2) small,
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/// 3) and really needs to be fast.
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pub trait LayoutRPC {
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/// Requests the dimensions of the content box, as in the `getBoundingClientRect()` call.
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fn content_box(&self) -> ContentBoxResponse;
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/// Requests the dimensions of all the content boxes, as in the `getClientRects()` call.
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fn content_boxes(&self) -> ContentBoxesResponse;
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/// Requests the geometry of this node. Used by APIs such as `clientTop`.
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fn node_geometry(&self) -> NodeGeometryResponse;
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/// Requests the overflow-x and overflow-y of this node. Used by `scrollTop` etc.
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fn node_overflow(&self) -> NodeOverflowResponse;
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/// Requests the scroll geometry of this node. Used by APIs such as `scrollTop`.
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fn node_scroll_area(&self) -> NodeGeometryResponse;
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/// Requests the scroll root id of this node. Used by APIs such as `scrollTop`
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fn node_scroll_root_id(&self) -> NodeScrollRootIdResponse;
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/// Requests the node containing the point of interest
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fn hit_test(&self) -> HitTestResponse;
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/// Query layout for the resolved value of a given CSS property
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fn resolved_style(&self) -> ResolvedStyleResponse;
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fn offset_parent(&self) -> OffsetParentResponse;
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/// Query layout for the resolve values of the margin properties for an element.
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fn margin_style(&self) -> MarginStyleResponse;
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/// Requests the list of not-yet-loaded images that were encountered in the last reflow.
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fn pending_images(&self) -> Vec<PendingImage>;
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/// Requests the list of nodes from the given point.
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fn nodes_from_point_response(&self) -> Vec<UntrustedNodeAddress>;
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fn text_index(&self) -> TextIndexResponse;
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}
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pub struct ContentBoxResponse(pub Option<Rect<Au>>);
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pub struct ContentBoxesResponse(pub Vec<Rect<Au>>);
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pub struct NodeGeometryResponse {
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pub client_rect: Rect<i32>,
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}
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pub struct NodeOverflowResponse(pub Option<Point2D<overflow_x::computed_value::T>>);
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pub struct NodeScrollRootIdResponse(pub ClipId);
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pub struct HitTestResponse {
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pub node_address: Option<UntrustedNodeAddress>,
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}
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pub struct ResolvedStyleResponse(pub String);
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#[derive(Clone)]
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pub struct OffsetParentResponse {
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pub node_address: Option<UntrustedNodeAddress>,
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pub rect: Rect<Au>,
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}
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impl OffsetParentResponse {
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pub fn empty() -> OffsetParentResponse {
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OffsetParentResponse {
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node_address: None,
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rect: Rect::zero(),
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}
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}
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}
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#[derive(Clone)]
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pub struct MarginStyleResponse {
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pub top: margin_top::computed_value::T,
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pub right: margin_right::computed_value::T,
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pub bottom: margin_bottom::computed_value::T,
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pub left: margin_left::computed_value::T,
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}
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impl MarginStyleResponse {
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pub fn empty() -> MarginStyleResponse {
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MarginStyleResponse {
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top: margin_top::computed_value::T::Auto,
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right: margin_right::computed_value::T::Auto,
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bottom: margin_bottom::computed_value::T::Auto,
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left: margin_left::computed_value::T::Auto,
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}
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}
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}
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#[derive(Clone)]
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pub struct TextIndexResponse(pub Option<usize>);
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