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Add some overview docs to compositing::constellation
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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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//! The `Constellation`, Servo's Grand Central Station
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//!
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//! The primary duty of a `Constellation` is to mediate between the
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//! graphics compositor and the many `Pipeline`s in the browser's
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//! navigation context, each `Pipeline` encompassing a `ScriptTask`,
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//! `LayoutTask`, and `PaintTask`.
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use pipeline::{Pipeline, CompositionPipeline};
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use compositor_task::CompositorProxy;
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@ -44,6 +51,11 @@ use clipboard::ClipboardContext;
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use webdriver_traits::WebDriverScriptCommand;
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/// Maintains the pipelines and navigation context and grants permission to composite.
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///
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/// It is parameterized over a `LayoutTaskFactory` and a
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/// `ScriptTaskFactory` (which in practice are implemented by
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/// `LayoutTask` in the `layout` crate, and `ScriptTask` in
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/// the `script` crate).
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pub struct Constellation<LTF, STF> {
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/// A channel through which messages can be sent to this object.
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pub chan: ConstellationChan,
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