servo/components/layout/display_list/mod.rs
Martin Robinson 3398fc017b
Move non-gfx things out of gfx_traits and create a base crate (#32296)
For a long time, `gfx_traits` has held a lot of things unrelated to graphics
and also unrelated to the `gfx` crate (which is mostly about fonts).
This is a cleanup which does a few things:

1. Move non `gfx` crate things out of `gfx_traits`. This is important in
   order to prevent dependency cycles with a different integration between
   layout, script, and fonts.
2. Rename the `msg` crate to `base`. It didn't really contain anything
   to do with messages and instead mostly holds ids, which are used
   across many different crates in Servo. This new crate will hold the
   *rare* data types that are widely used.

Details:

 - All BackgroundHangMonitor-related things from base to a new
   `background_hang_monitor_api` crate.
 - Moved `TraversalDirection` to `script_traits`
 - Moved `Epoch`-related things from `gfx_traits` to `base`.
 - Moved `PrintTree` to base. This should be widely useful in Servo.
 - Moved `WebrenderApi` from `base` to `webrender_traits` and renamed it
   to `WebRenderFontApi`.
2024-05-17 12:28:58 +00:00

41 lines
1.3 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 https://mozilla.org/MPL/2.0/. */
use malloc_size_of_derive::MallocSizeOf;
use serde::{Deserialize, Serialize};
pub use self::builder::{
BorderPaintingMode, DisplayListBuildState, IndexableText, StackingContextCollectionFlags,
StackingContextCollectionState,
};
pub use self::conversions::{FilterToLayout, ToLayout};
mod background;
mod border;
mod builder;
pub(crate) mod conversions;
mod gradient;
pub mod items;
mod webrender_helpers;
/// A unique ID for every stacking context.
#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, PartialEq, Serialize)]
pub struct StackingContextId(
/// The identifier for this StackingContext, derived from the Flow's memory address
/// and fragment type. As a space optimization, these are combined into a single word.
pub u64,
);
impl StackingContextId {
/// Returns the stacking context ID for the outer document/layout root.
#[inline]
pub fn root() -> StackingContextId {
StackingContextId(0)
}
pub fn next(&self) -> StackingContextId {
let StackingContextId(id) = *self;
StackingContextId(id + 1)
}
}