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2bcee38e52
A rendering opportunity is now unconditionally triggered by handling IPC messages in the `ScriptThread`, unless animations are running in which case it's driven by the compositor. We can now remove calls to `note_rendering_opportunity` and `rendering_opportunity`. There is one tricky case, which is when a promise completion during a microtask checkpoint dirties the page again. In this case we need to trigger a new rendering opportunity, unless animations are running. In a followup change, when not driven by the compositor, rendering opportunities will be driven by a timed task, meaning we can remove this workaround. Signed-off-by: Martin Robinson <mrobinson@igalia.com>
61 lines
1.8 KiB
Rust
61 lines
1.8 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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use std::fmt;
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use std::result::Result;
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use base::id::PipelineId;
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use crate::script_runtime::{CommonScriptMsg, ScriptChan, ScriptThreadEventCategory};
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use crate::task::{TaskCanceller, TaskOnce};
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use crate::task_source::{TaskSource, TaskSourceName};
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#[derive(JSTraceable)]
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pub struct RenderingTaskSource(pub Box<dyn ScriptChan + Send>, #[no_trace] pub PipelineId);
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impl Clone for RenderingTaskSource {
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fn clone(&self) -> RenderingTaskSource {
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RenderingTaskSource(self.0.clone(), self.1)
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}
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}
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impl fmt::Debug for RenderingTaskSource {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "RenderingTaskSource(...)")
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}
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}
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impl TaskSource for RenderingTaskSource {
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const NAME: TaskSourceName = TaskSourceName::Rendering;
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fn queue_with_canceller<T>(&self, task: T, canceller: &TaskCanceller) -> Result<(), ()>
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where
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T: TaskOnce + 'static,
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{
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let msg_task = CommonScriptMsg::Task(
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ScriptThreadEventCategory::ScriptEvent,
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Box::new(canceller.wrap_task(task)),
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Some(self.1),
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RenderingTaskSource::NAME,
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);
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self.0.send(msg_task).map_err(|_| ())
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}
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}
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impl RenderingTaskSource {
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/// This queues a task that will not be cancelled when its associated
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/// global scope gets destroyed.
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pub fn queue_unconditionally<T>(&self, task: T) -> Result<(), ()>
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where
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T: TaskOnce + 'static,
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{
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self.0.send(CommonScriptMsg::Task(
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ScriptThreadEventCategory::NetworkEvent,
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Box::new(task),
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Some(self.1),
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RenderingTaskSource::NAME,
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))
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}
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}
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