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https://github.com/mozilla/gecko-dev.git
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80e92561e4
This commit splits the style and layout data in two separate refcells. These transmutes have been a source of trouble (for example on Android), and they feel like a hack anyway. Fixes #16982 Source-Repo: https://github.com/servo/servo Source-Revision: 764da7ba39c0ccbaf807c6131418761f70584322 --HG-- extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear extra : subtree_revision : 8c76908f751b0f628da00bd0aa46e7c1548b1b66
70 lines
2.2 KiB
Rust
70 lines
2.2 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 atomic_refcell::AtomicRefCell;
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use construct::ConstructionResult;
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use script_layout_interface::StyleData;
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#[repr(C)]
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pub struct StyleAndLayoutData {
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/// Data accessed by script_layout_interface. This must be first to allow
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/// casting between StyleAndLayoutData and StyleData.
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pub style_data: StyleData,
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/// The layout data associated with a node.
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pub layout_data: AtomicRefCell<LayoutData>,
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}
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impl StyleAndLayoutData {
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pub fn new() -> Self {
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Self {
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style_data: StyleData::new(),
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layout_data: AtomicRefCell::new(LayoutData::new()),
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}
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}
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}
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/// Data that layout associates with a node.
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#[repr(C)]
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pub struct LayoutData {
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/// The current results of flow construction for this node. This is either a
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/// flow or a `ConstructionItem`. See comments in `construct.rs` for more
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/// details.
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pub flow_construction_result: ConstructionResult,
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pub before_flow_construction_result: ConstructionResult,
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pub after_flow_construction_result: ConstructionResult,
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pub details_summary_flow_construction_result: ConstructionResult,
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pub details_content_flow_construction_result: ConstructionResult,
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/// Various flags.
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pub flags: LayoutDataFlags,
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}
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impl LayoutData {
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/// Creates new layout data.
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pub fn new() -> LayoutData {
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Self {
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flow_construction_result: ConstructionResult::None,
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before_flow_construction_result: ConstructionResult::None,
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after_flow_construction_result: ConstructionResult::None,
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details_summary_flow_construction_result: ConstructionResult::None,
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details_content_flow_construction_result: ConstructionResult::None,
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flags: LayoutDataFlags::empty(),
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}
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}
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}
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bitflags! {
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pub flags LayoutDataFlags: u8 {
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#[doc = "Whether a flow has been newly constructed."]
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const HAS_NEWLY_CONSTRUCTED_FLOW = 0x01,
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#[doc = "Whether this node has been traversed by layout."]
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const HAS_BEEN_TRAVERSED = 0x02,
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}
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}
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