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Add some overview docs to compositing::constellation

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Brian Anderson 2015-05-09 01:55:27 -07:00
parent aa906a54d3
commit 17747ad0e2
1 changed files with 12 additions and 0 deletions
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components/compositing/constellation.rs
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@ -2,6 +2,13 @@
* License, v. 2.0. If a copy of the MPL was not distributed with this * 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/. */ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//! The `Constellation`, Servo's Grand Central Station
//!
//! The primary duty of a `Constellation` is to mediate between the
//! graphics compositor and the many `Pipeline`s in the browser's
//! navigation context, each `Pipeline` encompassing a `ScriptTask`,
//! `LayoutTask`, and `PaintTask`.
use pipeline::{Pipeline, CompositionPipeline}; use pipeline::{Pipeline, CompositionPipeline};
use compositor_task::CompositorProxy; use compositor_task::CompositorProxy;
@ -44,6 +51,11 @@ use clipboard::ClipboardContext;
use webdriver_traits::WebDriverScriptCommand; use webdriver_traits::WebDriverScriptCommand;
/// Maintains the pipelines and navigation context and grants permission to composite. /// Maintains the pipelines and navigation context and grants permission to composite.
///
/// It is parameterized over a `LayoutTaskFactory` and a
/// `ScriptTaskFactory` (which in practice are implemented by
/// `LayoutTask` in the `layout` crate, and `ScriptTask` in
/// the `script` crate).
pub struct Constellation<LTF, STF> { pub struct Constellation<LTF, STF> {
/// A channel through which messages can be sent to this object. /// A channel through which messages can be sent to this object.
pub chan: ConstellationChan, pub chan: ConstellationChan,