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Rearrange some data structures in preparation for the new incremental restyle algorithm.

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MozReview-Commit-ID: 8iOALQylOuK
This commit is contained in:
Bobby Holley 2016-10-06 23:23:18 -07:00
parent 6d29bf3f80
commit adf0fe9b9a
14 changed files with 333 additions and 219 deletions
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47
components/script/layout_wrapper.rs
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@ -52,7 +52,7 @@ use selectors::matching::ElementFlags;
use selectors::parser::{AttrSelector, NamespaceConstraint};
use std::fmt;
use std::marker::PhantomData;
use std::mem::{replace, transmute};
use std::mem::transmute;
use std::sync::Arc;
use std::sync::atomic::Ordering;
use string_cache::{Atom, Namespace};
@ -60,7 +60,7 @@ use style::atomic_refcell::{AtomicRef, AtomicRefCell, AtomicRefMut};
use style::attr::AttrValue;
use style::computed_values::display;
use style::context::SharedStyleContext;
use style::data::{PersistentStyleData, PseudoStyles};
use style::data::NodeData;
use style::dom::{LayoutIterator, NodeInfo, OpaqueNode, PresentationalHintsSynthetizer, TDocument, TElement, TNode};
use style::dom::{TRestyleDamage, UnsafeNode};
use style::element_state::*;
@ -107,11 +107,7 @@ impl<'ln> ServoLayoutNode<'ln> {
}
}
pub fn borrow_data(&self) -> Option<AtomicRef<PersistentStyleData>> {
self.get_style_data().map(|d| d.borrow())
}
pub fn mutate_data(&self) -> Option<AtomicRefMut<PersistentStyleData>> {
pub fn mutate_data(&self) -> Option<AtomicRefMut<NodeData>> {
self.get_style_data().map(|d| d.borrow_mut())
}
@ -234,32 +230,25 @@ impl<'ln> TNode for ServoLayoutNode<'ln> {
old_value - 1
}
fn get_existing_style(&self) -> Option<Arc<ComputedValues>> {
self.borrow_data().and_then(|x| x.style.clone())
}
fn set_style(&self, style: Arc<ComputedValues>) {
self.mutate_data().unwrap().style = Some(style);
}
fn take_pseudo_styles(&self) -> PseudoStyles {
replace(&mut self.mutate_data().unwrap().per_pseudo, PseudoStyles::default())
}
fn set_pseudo_styles(&self, styles: PseudoStyles) {
debug_assert!(self.borrow_data().unwrap().per_pseudo.is_empty());
self.mutate_data().unwrap().per_pseudo = styles;
fn begin_styling(&self) -> AtomicRefMut<NodeData> {
let mut data = self.mutate_data().unwrap();
data.gather_previous_styles(|| None);
data
}
fn style_text_node(&self, style: Arc<ComputedValues>) {
debug_assert!(self.is_text_node());
let mut data = self.get_partial_layout_data().unwrap().borrow_mut();
data.style_data.style = Some(style);
data.style_data.style_text_node(style);
if self.has_changed() {
data.restyle_damage = RestyleDamage::rebuild_and_reflow();
}
}
fn borrow_data(&self) -> Option<AtomicRef<NodeData>> {
self.get_style_data().map(|d| d.borrow())
}
fn restyle_damage(self) -> RestyleDamage {
self.get_partial_layout_data().unwrap().borrow().restyle_damage
}
@ -345,11 +334,11 @@ impl<'ln> LayoutNode for ServoLayoutNode<'ln> {
self.node.set_flag(HAS_DIRTY_DESCENDANTS, false);
}
fn get_style_data(&self) -> Option<&AtomicRefCell<PersistentStyleData>> {
fn get_style_data(&self) -> Option<&AtomicRefCell<NodeData>> {
unsafe {
self.get_jsmanaged().get_style_and_layout_data().map(|d| {
let ppld: &AtomicRefCell<PartialPersistentLayoutData> = &**d.ptr;
let psd: &AtomicRefCell<PersistentStyleData> = transmute(ppld);
let psd: &AtomicRefCell<NodeData> = transmute(ppld);
psd
})
}
@ -413,11 +402,7 @@ impl<'ln> ServoLayoutNode<'ln> {
fn debug_style_str(self) -> String {
if let Some(data) = self.borrow_data() {
if let Some(data) = data.style.as_ref() {
format!("{:?}: {:?}", self.script_type_id(), data)
} else {
format!("{:?}: style=None", self.script_type_id())
}
format!("{:?}: {:?}", self.script_type_id(), &*data)
} else {
format!("{:?}: style_data=None", self.script_type_id())
}
@ -922,7 +907,7 @@ impl<'ln> ThreadSafeLayoutNode for ServoThreadSafeLayoutNode<'ln> {
}
}
fn get_style_data(&self) -> Option<&AtomicRefCell<PersistentStyleData>> {
fn get_style_data(&self) -> Option<&AtomicRefCell<NodeData>> {
self.node.get_style_data()
}
}