gecko-dev/servo/components/layout/data.rs

59 lines
2.2 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use construct::ConstructionResult;
use script_layout_interface::restyle_damage::RestyleDamage;
use style::data::PersistentStyleData;
/// Data that layout associates with a node.
pub struct PersistentLayoutData {
/// Data that the style system associates with a node. When the
/// style system is being used standalone, this is all that hangs
/// off the node. This must be first to permit the various
/// transmutations between PersistentStyleData and PersistentLayoutData.
pub style_data: PersistentStyleData,
/// Description of how to account for recent style changes.
pub restyle_damage: RestyleDamage,
/// The current results of flow construction for this node. This is either a
/// flow or a `ConstructionItem`. See comments in `construct.rs` for more
/// details.
pub flow_construction_result: ConstructionResult,
pub before_flow_construction_result: ConstructionResult,
pub after_flow_construction_result: ConstructionResult,
pub details_summary_flow_construction_result: ConstructionResult,
pub details_content_flow_construction_result: ConstructionResult,
/// Various flags.
pub flags: LayoutDataFlags,
}
impl PersistentLayoutData {
/// Creates new layout data.
pub fn new() -> PersistentLayoutData {
PersistentLayoutData {
style_data: PersistentStyleData::new(),
restyle_damage: RestyleDamage::empty(),
flow_construction_result: ConstructionResult::None,
before_flow_construction_result: ConstructionResult::None,
after_flow_construction_result: ConstructionResult::None,
details_summary_flow_construction_result: ConstructionResult::None,
details_content_flow_construction_result: ConstructionResult::None,
flags: LayoutDataFlags::empty(),
}
}
}
bitflags! {
pub flags LayoutDataFlags: u8 {
#[doc = "Whether a flow has been newly constructed."]
const HAS_NEWLY_CONSTRUCTED_FLOW = 0x01
}
}