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style: Remove Stylist::is_device_dirty.

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More progress on unifying how Gecko and Servo track stylist dirtiness.
This commit is contained in:
Emilio Cobos Álvarez 2017-08-18 17:41:47 +02:00
parent d4e43d9d76
commit 85996826ab
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GPG key ID: 056B727BB9C1027C
2 changed files with 84 additions and 99 deletions
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100
components/layout_thread/lib.rs
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@ -137,7 +137,7 @@ use style::selector_parser::SnapshotMap;
use style::servo::restyle_damage::{REFLOW, REFLOW_OUT_OF_FLOW, REPAINT, REPOSITION, STORE_OVERFLOW};
use style::shared_lock::{SharedRwLock, SharedRwLockReadGuard, StylesheetGuards};
use style::stylesheet_set::StylesheetSet;
use style::stylesheets::{Origin, OriginSet, Stylesheet, StylesheetContents, StylesheetInDocument, UserAgentStylesheets};
use style::stylesheets::{Origin, Stylesheet, StylesheetContents, StylesheetInDocument, UserAgentStylesheets};
use style::stylist::Stylist;
use style::thread_state;
use style::timer::Timer;
@ -434,20 +434,10 @@ impl<'a, 'b: 'a> RwData<'a, 'b> {
/// use `block`.
fn lock(&mut self) -> RWGuard<'b> {
match self.possibly_locked_rw_data.take() {
None => RWGuard::Used(self.rw_data.lock().unwrap()),
None => RWGuard::Used(self.rw_data.lock().unwrap()),
Some(x) => RWGuard::Held(x),
}
}
/// If no reflow has ever been triggered, this will keep the lock, locked
/// (and saved in `possibly_locked_rw_data`). If it has been, the lock will
/// be unlocked.
fn block(&mut self, rw_data: RWGuard<'b>) {
match rw_data {
RWGuard::Used(x) => drop(x),
RWGuard::Held(x) => *self.possibly_locked_rw_data = Some(x),
}
}
}
fn add_font_face_rules(stylesheet: &Stylesheet,
@ -526,18 +516,6 @@ impl LayoutThread {
let font_cache_receiver =
ROUTER.route_ipc_receiver_to_new_mpsc_receiver(ipc_font_cache_receiver);
let stylist = Stylist::new(device, QuirksMode::NoQuirks);
let outstanding_web_fonts_counter = Arc::new(AtomicUsize::new(0));
let ua_stylesheets = &*UA_STYLESHEETS;
let guard = ua_stylesheets.shared_lock.read();
for stylesheet in &ua_stylesheets.user_or_user_agent_stylesheets {
add_font_face_rules(stylesheet,
&guard,
stylist.device(),
&font_cache_thread,
&ipc_font_cache_sender,
&outstanding_web_fonts_counter);
}
LayoutThread {
id: id,
@ -561,7 +539,7 @@ impl LayoutThread {
generation: Cell::new(0),
new_animations_sender: new_animations_sender,
new_animations_receiver: new_animations_receiver,
outstanding_web_fonts: outstanding_web_fonts_counter,
outstanding_web_fonts: Arc::new(AtomicUsize::new(0)),
root_flow: RefCell::new(None),
document_shared_lock: None,
running_animations: ServoArc::new(RwLock::new(FnvHashMap::default())),
@ -570,7 +548,7 @@ impl LayoutThread {
viewport_size: Size2D::new(Au(0), Au(0)),
webrender_api: webrender_api_sender.create_api(),
webrender_document,
stylist,
stylist: Stylist::new(device, QuirksMode::NoQuirks),
stylesheets: StylesheetSet::new(),
rw_data: Arc::new(Mutex::new(
LayoutThreadData {
@ -718,12 +696,7 @@ impl LayoutThread {
match request {
Msg::AddStylesheet(stylesheet, before_stylesheet) => {
let guard = stylesheet.shared_lock.read();
self.handle_add_stylesheet(
&stylesheet,
&guard,
possibly_locked_rw_data,
);
self.handle_add_stylesheet(&stylesheet, &guard);
match before_stylesheet {
Some(insertion_point) => {
@ -916,16 +889,13 @@ impl LayoutThread {
let _ = self.parallel_traversal.take();
}
fn handle_add_stylesheet<'a, 'b>(
fn handle_add_stylesheet(
&self,
stylesheet: &ServoArc<Stylesheet>,
stylesheet: &Stylesheet,
guard: &SharedRwLockReadGuard,
possibly_locked_rw_data: &mut RwData<'a, 'b>,
) {
// Find all font-face rules and notify the font cache of them.
// GWTODO: Need to handle unloading web fonts.
let rw_data = possibly_locked_rw_data.lock();
if stylesheet.is_effective_for_device(self.stylist.device(), &guard) {
add_font_face_rules(&*stylesheet,
&guard,
@ -934,8 +904,6 @@ impl LayoutThread {
&self.font_cache_sender,
&self.outstanding_web_fonts);
}
possibly_locked_rw_data.block(rw_data);
}
/// Advances the animation clock of the document.
@ -1215,7 +1183,8 @@ impl LayoutThread {
self.document_shared_lock = Some(document_shared_lock.clone());
let author_guard = document_shared_lock.read();
let device = Device::new(MediaType::screen(), initial_viewport, device_pixel_ratio);
self.stylist.set_device(device, &author_guard, self.stylesheets.iter());
let sheet_origins_affected_by_device_change =
self.stylist.set_device(device, &author_guard, self.stylesheets.iter());
self.viewport_size =
self.stylist.viewport_constraints().map_or(current_screen_size, |constraints| {
@ -1269,20 +1238,45 @@ impl LayoutThread {
};
let needs_dirtying = {
let mut extra_data = Default::default();
let (iter, mut origins_dirty) = self.stylesheets.flush(Some(element));
if data.stylesheets_changed {
origins_dirty = OriginSet::all();
debug!("Flushing stylist");
let mut origins_dirty = sheet_origins_affected_by_device_change;
debug!("Device changes: {:?}", origins_dirty);
if self.first_reflow.get() {
debug!("First reflow, rebuilding user and UA rules");
origins_dirty |= Origin::User;
origins_dirty |= Origin::UserAgent;
for stylesheet in &ua_stylesheets.user_or_user_agent_stylesheets {
self.handle_add_stylesheet(stylesheet, &ua_or_user_guard);
}
}
let origins_rebuilt = self.stylist.rebuild(
iter,
&guards,
Some(ua_stylesheets),
/* author_style_disabled = */ false,
&mut extra_data,
origins_dirty,
);
!origins_rebuilt.is_empty()
let (iter, invalidation_origins_dirty) = self.stylesheets.flush(Some(element));
debug!("invalidation: {:?}", invalidation_origins_dirty);
origins_dirty |= invalidation_origins_dirty;
if data.stylesheets_changed {
debug!("Doc sheets changed, flushing author sheets too");
origins_dirty |= Origin::Author;
}
if !origins_dirty.is_empty() {
let mut extra_data = Default::default();
self.stylist.rebuild(
iter,
&guards,
Some(ua_stylesheets),
/* author_style_disabled = */ false,
&mut extra_data,
origins_dirty,
);
}
!origins_dirty.is_empty()
};
let needs_reflow = viewport_size_changed && !needs_dirtying;