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https://github.com/servo/servo.git
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92061132f3
Previously, the flow for ticking animations was: Compositor -> Constellation -> Layout -> Script However, this means that the compositor <-> layout messages can thrash, meaning layout thread is very rarely idle. This means that the script thread (which joins on the layout thread during reflow) was unable to execute and run rAF callbacks. With this change, the flow is now: Compositor -> Constellation -> Script (when rAF is active). Compositor -> Constellation -> Layout (when transitions / animations are active and no rAF is present). This makes rAF based animation *much* smoother.
111 lines
3.4 KiB
Rust
111 lines
3.4 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 http://mozilla.org/MPL/2.0/. */
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#![feature(box_syntax)]
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#![feature(custom_derive)]
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#![feature(plugin)]
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#![feature(mpsc_select)]
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#![feature(plugin)]
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#![plugin(plugins)]
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#![deny(unsafe_code)]
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#![plugin(serde_macros)]
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extern crate app_units;
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extern crate azure;
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extern crate canvas;
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extern crate canvas_traits;
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extern crate clipboard;
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#[cfg(target_os = "macos")]
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extern crate core_graphics;
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#[cfg(target_os = "macos")]
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extern crate core_text;
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extern crate devtools_traits;
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extern crate euclid;
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#[cfg(not(target_os = "windows"))]
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extern crate gaol;
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extern crate gfx;
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extern crate gfx_traits;
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extern crate gleam;
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extern crate image;
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extern crate ipc_channel;
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extern crate layers;
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extern crate layout_traits;
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#[macro_use]
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extern crate log;
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extern crate msg;
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extern crate net_traits;
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extern crate num;
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extern crate offscreen_gl_context;
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#[macro_use]
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extern crate profile_traits;
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extern crate script_traits;
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extern crate serde;
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extern crate style_traits;
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extern crate time;
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extern crate url;
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#[macro_use]
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extern crate util;
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extern crate webrender;
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extern crate webrender_traits;
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pub use compositor_thread::{CompositorEventListener, CompositorProxy, CompositorThread};
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pub use constellation::Constellation;
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use euclid::size::{Size2D};
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use gfx_traits::Epoch;
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use ipc_channel::ipc::{IpcSender};
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use msg::constellation_msg::{FrameId, Key, KeyState, KeyModifiers, LoadData};
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use msg::constellation_msg::{NavigationDirection, PipelineId, SubpageId};
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use msg::constellation_msg::{WebDriverCommandMsg, WindowSizeData};
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use std::collections::HashMap;
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use url::Url;
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mod compositor;
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mod compositor_layer;
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pub mod compositor_thread;
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pub mod constellation;
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mod delayed_composition;
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mod headless;
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pub mod pipeline;
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#[cfg(not(target_os = "windows"))]
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pub mod sandboxing;
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mod surface_map;
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mod timer_scheduler;
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mod touch;
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pub mod windowing;
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/// Specifies whether the script or layout thread needs to be ticked for animation.
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#[derive(Deserialize, Serialize)]
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pub enum AnimationTickType {
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Script,
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Layout,
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}
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/// Messages from the compositor to the constellation.
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#[derive(Deserialize, Serialize)]
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pub enum CompositorMsg {
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Exit,
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FrameSize(PipelineId, Size2D<f32>),
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/// Request that the constellation send the FrameId corresponding to the document
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/// with the provided pipeline id
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GetFrame(PipelineId, IpcSender<Option<FrameId>>),
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/// Request that the constellation send the current pipeline id for the provided frame
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/// id, or for the root frame if this is None, over a provided channel
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GetPipeline(Option<FrameId>, IpcSender<Option<PipelineId>>),
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/// Requests that the constellation inform the compositor of the title of the pipeline
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/// immediately.
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GetPipelineTitle(PipelineId),
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InitLoadUrl(Url),
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/// Query the constellation to see if the current compositor output is stable
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IsReadyToSaveImage(HashMap<PipelineId, Epoch>),
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KeyEvent(Key, KeyState, KeyModifiers),
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LoadUrl(PipelineId, LoadData),
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Navigate(Option<(PipelineId, SubpageId)>, NavigationDirection),
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ResizedWindow(WindowSizeData),
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/// Requests that the constellation instruct layout to begin a new tick of the animation.
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TickAnimation(PipelineId, AnimationTickType),
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/// Dispatch a webdriver command
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WebDriverCommand(WebDriverCommandMsg),
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}
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