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3398fc017b
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`.
45 lines
1.2 KiB
Rust
45 lines
1.2 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 https://mozilla.org/MPL/2.0/. */
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#![deny(unsafe_code)]
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//! A crate to hold very common types in Servo.
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//!
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//! You should almost never need to add a data type to this crate. Instead look for
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//! a more shared crate that has fewer dependents.
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use serde::{Deserialize, Serialize};
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pub mod id;
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pub mod print_tree;
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use webrender_api::Epoch as WebRenderEpoch;
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/// A struct for denoting the age of messages; prevents race conditions.
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#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
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pub struct Epoch(pub u32);
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impl Epoch {
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pub fn next(&mut self) {
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self.0 += 1;
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}
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}
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impl From<Epoch> for WebRenderEpoch {
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fn from(val: Epoch) -> Self {
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WebRenderEpoch(val.0)
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}
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}
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pub trait WebRenderEpochToU16 {
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fn as_u16(&self) -> u16;
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}
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impl WebRenderEpochToU16 for WebRenderEpoch {
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/// The value of this [`Epoch`] as a u16 value. Note that if this Epoch's
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/// value is more than u16::MAX, then the return value will be modulo
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/// u16::MAX.
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fn as_u16(&self) -> u16 {
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(self.0 % u16::MAX as u32) as u16
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}
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}
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