Auto merge of #11766 - emilio:keyframes-parsing, r=SimonSapin,pcwalton

Add `@keyframes` and `animation-*` support.

- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors

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- [x] There are tests for these changes

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This adds support for parsing `@keyframes` rules, and animation properties. Stylo will need it sometime soonish, plus I want to make animations work in Servo.

The remaining part is doin the math and trigger the animations correctly from servo. I don't expect it to be *that* hard, but probaby I'll need to learn a bit more about the current animation infra (e.g. why the heck is the `new_animations_sender` guarded by a `Mutex`?).

I'd expect to land this, since this is already a bunch of work, this is the part exclusively required by stylo (at least if we don't use Servo's machinery), the media query parsing is tested, and the properties land after a flag, but if you prefer to wait until I finish this up it's fine for me too.

r? @SimonSapin

cc @pcwalton @bholley

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1 files changed, 5 insertions, 5 deletions

diff --git a/components/layout_thread/lib.rs b/components/layout_thread/lib.rs
index fad57c499d3..e47670f99c1 100644
--- a/components/layout_thread/lib.rs
+++ b/components/layout_thread/lib.rs
@@ -98,7 +98,6 @@ use std::ops::{Deref, DerefMut};
 use std::sync::atomic::{AtomicUsize, Ordering};
 use std::sync::mpsc::{channel, Sender, Receiver};
 use std::sync::{Arc, Mutex, MutexGuard, RwLock};
-use style::animation::Animation;
 use style::computed_values::{filter, mix_blend_mode};
 use style::context::ReflowGoal;
 use style::dom::{TDocument, TElement, TNode};
@@ -109,7 +108,7 @@ use style::parallel::WorkQueueData;
 use style::properties::ComputedValues;
 use style::refcell::RefCell;
 use style::selector_matching::USER_OR_USER_AGENT_STYLESHEETS;
-use style::servo::{SharedStyleContext, Stylesheet, Stylist};
+use style::servo::{Animation, SharedStyleContext, Stylesheet, Stylist};
 use style::stylesheets::CSSRuleIteratorExt;
 use url::Url;
 use util::geometry::MAX_RECT;
@@ -1290,7 +1289,7 @@ impl LayoutThread {
         self.tick_animations(&mut rw_data);
     }
 
-    pub fn tick_animations(&mut self, rw_data: &mut LayoutThreadData) {
+    fn tick_animations(&mut self, rw_data: &mut LayoutThreadData) {
         let reflow_info = Reflow {
             goal: ReflowGoal::ForDisplay,
             page_clip_rect: MAX_RECT,
@@ -1307,8 +1306,9 @@ impl LayoutThread {
                     self.profiler_metadata(),
                     self.time_profiler_chan.clone(),
                     || {
-                        animation::recalc_style_for_animations(flow_ref::deref_mut(&mut root_flow),
-                                                               &*animations)
+                        animation::recalc_style_for_animations(&layout_context,
+                                                               flow_ref::deref_mut(&mut root_flow),
+                                                               &animations)
                     });
         }