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Implemented the plumbing for paint worklets.

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This commit is contained in:
Alan Jeffrey 2017-04-03 14:35:57 -05:00
parent 7e273d6c9b
commit fd17dcd604
23 changed files with 600 additions and 156 deletions
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11
components/layout_thread/lib.rs
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@ -90,6 +90,7 @@ use script_layout_interface::rpc::TextIndexResponse;
use script_layout_interface::wrapper_traits::LayoutNode;
use script_traits::{ConstellationControlMsg, LayoutControlMsg, LayoutMsg as ConstellationMsg};
use script_traits::{ScrollState, UntrustedNodeAddress};
use script_traits::PaintWorkletExecutor;
use selectors::Element;
use servo_config::opts;
use servo_config::prefs::PREFS;
@ -225,6 +226,9 @@ pub struct LayoutThread {
webrender_image_cache: Arc<RwLock<FnvHashMap<(ServoUrl, UsePlaceholder),
WebRenderImageInfo>>>,
/// The executor for paint worklets.
/// Will be None if the script thread hasn't added any paint worklet modules.
paint_worklet_executor: Option<Arc<PaintWorkletExecutor>>,
/// Webrender interface.
webrender_api: webrender_traits::RenderApi,
@ -477,6 +481,7 @@ impl LayoutThread {
constellation_chan: constellation_chan.clone(),
time_profiler_chan: time_profiler_chan,
mem_profiler_chan: mem_profiler_chan,
paint_worklet_executor: None,
image_cache: image_cache.clone(),
font_cache_thread: font_cache_thread,
first_reflow: Cell::new(true),
@ -574,6 +579,7 @@ impl LayoutThread {
webrender_image_cache: self.webrender_image_cache.clone(),
pending_images: if script_initiated_layout { Some(Mutex::new(vec![])) } else { None },
newly_transitioning_nodes: if script_initiated_layout { Some(Mutex::new(vec![])) } else { None },
paint_worklet_executor: self.paint_worklet_executor.clone(),
}
}
@ -689,6 +695,11 @@ impl LayoutThread {
Msg::SetFinalUrl(final_url) => {
self.url = final_url;
},
Msg::SetPaintWorkletExecutor(executor) => {
debug!("Setting the paint worklet executor");
debug_assert!(self.paint_worklet_executor.is_none());
self.paint_worklet_executor = Some(executor);
},
Msg::PrepareToExit(response_chan) => {
self.prepare_to_exit(response_chan);
return false