mirror of
https://github.com/servo/servo.git
synced 2025-08-03 04:30:10 +01:00
Remove the dependency of css/matching.rs on concrete RestyleDamage.
We can make this easier by inlining helper method implementations in the traits themselves, which makes the code more compact as a nice side-effect.
This commit is contained in:
parent
27987c3bb4
commit
08f2a24552
3 changed files with 79 additions and 128 deletions
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@ -6,7 +6,7 @@
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use flow::{self, Flow};
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use gfx::display_list::OpaqueNode;
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use incremental::{self, RestyleDamage};
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use incremental::RestyleDamage;
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use msg::constellation_msg::{AnimationState, ConstellationChan, PipelineId};
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use script::layout_interface::Animation;
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use script_traits::LayoutMsg as ConstellationMsg;
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@ -15,6 +15,7 @@ use std::collections::hash_map::Entry;
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use std::sync::mpsc::{Sender, Receiver};
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use std::sync::{Arc, Mutex};
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use style::animation::{GetMod, PropertyAnimation};
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use style::dom::TRestyleDamage;
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use style::properties::ComputedValues;
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use time;
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@ -142,9 +143,9 @@ pub fn recalc_style_for_animations(flow: &mut Flow,
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/// Updates a single animation and associated style based on the current time. If `damage` is
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/// provided, inserts the appropriate restyle damage.
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pub fn update_style_for_animation(animation: &Animation,
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style: &mut Arc<ComputedValues>,
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damage: Option<&mut RestyleDamage>) {
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pub fn update_style_for_animation<ConcreteRestyleDamage: TRestyleDamage>(animation: &Animation,
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style: &mut Arc<ComputedValues>,
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damage: Option<&mut ConcreteRestyleDamage>) {
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let now = time::precise_time_s();
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let mut progress = (now - animation.start_time) / animation.duration();
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if progress > 1.0 {
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@ -157,7 +158,7 @@ pub fn update_style_for_animation(animation: &Animation,
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let mut new_style = (*style).clone();
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animation.property_animation.update(&mut *Arc::make_mut(&mut new_style), progress);
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if let Some(damage) = damage {
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damage.insert(incremental::compute_damage(&Some((*style).clone()), &new_style));
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*damage = *damage | ConcreteRestyleDamage::compute(&Some((*style).clone()), &new_style);
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}
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*style = new_style
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@ -8,18 +8,15 @@
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use animation;
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use context::SharedLayoutContext;
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use data::PrivateLayoutData;
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use incremental::{self, RestyleDamage};
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use msg::ParseErrorReporter;
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use script::layout_interface::Animation;
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use selectors::bloom::BloomFilter;
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use selectors::parser::PseudoElement;
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use selectors::{Element};
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use std::mem::transmute;
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use std::sync::mpsc::Sender;
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use std::sync::{Arc, Mutex};
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use style::data::PrivateStyleData;
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use style::dom::{TElement, TNode};
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use style::dom::{TElement, TNode, TRestyleDamage};
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use style::matching::{ApplicableDeclarations, ApplicableDeclarationsCache};
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use style::matching::{StyleSharingCandidate, StyleSharingCandidateCache};
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use style::properties::{ComputedValues, cascade};
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@ -28,54 +25,15 @@ use util::arc_ptr_eq;
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use util::opts;
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/// The results of attempting to share a style.
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pub enum StyleSharingResult {
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pub enum StyleSharingResult<ConcreteRestyleDamage: TRestyleDamage> {
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/// We didn't find anybody to share the style with.
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CannotShare,
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/// The node's style can be shared. The integer specifies the index in the LRU cache that was
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/// hit and the damage that was done.
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StyleWasShared(usize, RestyleDamage),
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StyleWasShared(usize, ConcreteRestyleDamage),
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}
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pub trait ElementMatchMethods<'le, ConcreteElement: TElement<'le>> {
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fn match_element(&self,
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stylist: &Stylist,
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parent_bf: Option<&BloomFilter>,
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applicable_declarations: &mut ApplicableDeclarations)
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-> bool;
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/// Attempts to share a style with another node. This method is unsafe because it depends on
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/// the `style_sharing_candidate_cache` having only live nodes in it, and we have no way to
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/// guarantee that at the type system level yet.
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unsafe fn share_style_if_possible(&self,
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style_sharing_candidate_cache:
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&mut StyleSharingCandidateCache,
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parent: Option<ConcreteElement::ConcreteNode>)
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-> StyleSharingResult;
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}
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pub trait MatchMethods<'ln, ConcreteNode: TNode<'ln>> {
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/// Inserts and removes the matching `Descendant` selectors from a bloom
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/// filter. This is used to speed up CSS selector matching to remove
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/// unnecessary tree climbs for `Descendant` queries.
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///
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/// A bloom filter of the local names, namespaces, IDs, and classes is kept.
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/// Therefore, each node must have its matching selectors inserted _after_
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/// its own selector matching and _before_ its children start.
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fn insert_into_bloom_filter(&self, bf: &mut BloomFilter);
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/// After all the children are done css selector matching, this must be
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/// called to reset the bloom filter after an `insert`.
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fn remove_from_bloom_filter(&self, bf: &mut BloomFilter);
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unsafe fn cascade_node(&self,
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layout_context: &SharedLayoutContext,
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parent: Option<ConcreteNode>,
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applicable_declarations: &ApplicableDeclarations,
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applicable_declarations_cache: &mut ApplicableDeclarationsCache,
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new_animations_sender: &Mutex<Sender<Animation>>);
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}
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trait PrivateMatchMethods {
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trait PrivateMatchMethods<'ln>: TNode<'ln> {
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fn cascade_node_pseudo_element(&self,
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layout_context: &SharedLayoutContext,
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parent_style: Option<&Arc<ComputedValues>>,
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@ -86,33 +44,7 @@ trait PrivateMatchMethods {
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new_animations_sender: &Mutex<Sender<Animation>>,
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shareable: bool,
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animate_properties: bool)
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-> RestyleDamage;
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fn update_animations_for_cascade(&self,
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layout_context: &SharedLayoutContext,
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style: &mut Option<Arc<ComputedValues>>)
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-> bool;
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}
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trait PrivateElementMatchMethods<'le, ConcreteElement: TElement<'le>> {
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fn share_style_with_candidate_if_possible(&self,
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parent_node: Option<ConcreteElement::ConcreteNode>,
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candidate: &StyleSharingCandidate)
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-> Option<Arc<ComputedValues>>;
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}
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impl<'ln, ConcreteNode> PrivateMatchMethods for ConcreteNode
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where ConcreteNode: TNode<'ln> {
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fn cascade_node_pseudo_element(&self,
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layout_context: &SharedLayoutContext,
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parent_style: Option<&Arc<ComputedValues>>,
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applicable_declarations: &[DeclarationBlock],
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style: &mut Option<Arc<ComputedValues>>,
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applicable_declarations_cache:
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&mut ApplicableDeclarationsCache,
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new_animations_sender: &Mutex<Sender<Animation>>,
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shareable: bool,
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animate_properties: bool)
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-> RestyleDamage {
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-> Self::ConcreteRestyleDamage {
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let mut cacheable = true;
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if animate_properties {
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cacheable = !self.update_animations_for_cascade(layout_context, style) && cacheable;
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@ -162,7 +94,7 @@ impl<'ln, ConcreteNode> PrivateMatchMethods for ConcreteNode
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// Calculate style difference.
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let this_style = Arc::new(this_style);
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let damage = incremental::compute_damage(style, &*this_style);
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let damage = Self::ConcreteRestyleDamage::compute(style, &*this_style);
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// Cache the resolved style if it was cacheable.
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if cacheable {
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@ -212,7 +144,7 @@ impl<'ln, ConcreteNode> PrivateMatchMethods for ConcreteNode
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if had_running_animations {
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let mut all_running_animations = layout_context.style_context.running_animations.write().unwrap();
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for running_animation in all_running_animations.get(&this_opaque).unwrap() {
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animation::update_style_for_animation(running_animation, style, None);
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animation::update_style_for_animation::<Self::ConcreteRestyleDamage>(running_animation, style, None);
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}
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all_running_animations.remove(&this_opaque);
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}
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@ -221,11 +153,11 @@ impl<'ln, ConcreteNode> PrivateMatchMethods for ConcreteNode
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}
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}
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impl<'le, ConcreteElement> PrivateElementMatchMethods<'le, ConcreteElement>
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for ConcreteElement
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where ConcreteElement: TElement<'le> {
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impl<'ln, N: TNode<'ln>> PrivateMatchMethods<'ln> for N {}
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trait PrivateElementMatchMethods<'le>: TElement<'le> {
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fn share_style_with_candidate_if_possible(&self,
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parent_node: Option<ConcreteElement::ConcreteNode>,
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parent_node: Option<Self::ConcreteNode>,
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candidate: &StyleSharingCandidate)
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-> Option<Arc<ComputedValues>> {
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let parent_node = match parent_node {
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@ -254,9 +186,9 @@ impl<'le, ConcreteElement> PrivateElementMatchMethods<'le, ConcreteElement>
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}
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}
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impl<'le, ConcreteElement> ElementMatchMethods<'le, ConcreteElement>
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for ConcreteElement
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where ConcreteElement: TElement<'le> {
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impl<'le, E: TElement<'le>> PrivateElementMatchMethods<'le> for E {}
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pub trait ElementMatchMethods<'le> : TElement<'le> {
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fn match_element(&self,
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stylist: &Stylist,
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parent_bf: Option<&BloomFilter>,
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@ -286,11 +218,14 @@ impl<'le, ConcreteElement> ElementMatchMethods<'le, ConcreteElement>
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applicable_declarations.after.is_empty()
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}
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/// Attempts to share a style with another node. This method is unsafe because it depends on
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/// the `style_sharing_candidate_cache` having only live nodes in it, and we have no way to
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/// guarantee that at the type system level yet.
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unsafe fn share_style_if_possible(&self,
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style_sharing_candidate_cache:
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&mut StyleSharingCandidateCache,
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parent: Option<ConcreteElement::ConcreteNode>)
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-> StyleSharingResult {
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parent: Option<Self::ConcreteNode>)
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-> StyleSharingResult<<Self::ConcreteNode as TNode<'le>>::ConcreteRestyleDamage> {
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if opts::get().disable_share_style_cache {
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return StyleSharingResult::CannotShare
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}
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// Yay, cache hit. Share the style.
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let node = self.as_node();
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let style = &mut node.mutate_data().unwrap().style;
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let damage = incremental::compute_damage(style, &*shared_style);
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let damage = <<Self as TElement<'le>>::ConcreteNode as TNode<'le>>::ConcreteRestyleDamage::compute(style, &*shared_style);
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*style = Some(shared_style);
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return StyleSharingResult::StyleWasShared(i, damage)
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}
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}
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}
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impl<'ln, ConcreteNode> MatchMethods<'ln, ConcreteNode>
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for ConcreteNode
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where ConcreteNode: TNode<'ln> {
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impl<'le, E: TElement<'le>> ElementMatchMethods<'le> for E {}
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pub trait MatchMethods<'ln> : TNode<'ln> {
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// The below two functions are copy+paste because I can't figure out how to
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// write a function which takes a generic function. I don't think it can
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// be done.
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// - `SimpleSelector::ID`
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// - `SimpleSelector::Class`
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/// Inserts and removes the matching `Descendant` selectors from a bloom
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/// filter. This is used to speed up CSS selector matching to remove
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/// unnecessary tree climbs for `Descendant` queries.
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///
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/// A bloom filter of the local names, namespaces, IDs, and classes is kept.
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/// Therefore, each node must have its matching selectors inserted _after_
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/// its own selector matching and _before_ its children start.
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fn insert_into_bloom_filter(&self, bf: &mut BloomFilter) {
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// Only elements are interesting.
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if let Some(element) = self.as_element() {
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}
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}
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/// After all the children are done css selector matching, this must be
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/// called to reset the bloom filter after an `insert`.
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fn remove_from_bloom_filter(&self, bf: &mut BloomFilter) {
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// Only elements are interesting.
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if let Some(element) = self.as_element() {
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@ -364,7 +308,7 @@ impl<'ln, ConcreteNode> MatchMethods<'ln, ConcreteNode>
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unsafe fn cascade_node(&self,
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layout_context: &SharedLayoutContext,
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parent: Option<ConcreteNode>,
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parent: Option<Self>,
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applicable_declarations: &ApplicableDeclarations,
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applicable_declarations_cache: &mut ApplicableDeclarationsCache,
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new_animations_sender: &Mutex<Sender<Animation>>) {
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}
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};
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let mut data_ref = self.mutate_data().unwrap();
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let mut data = &mut *data_ref;
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if self.is_text_node() {
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// Text nodes get a copy of the parent style. This ensures
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// that during fragment construction any non-inherited
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// CSS properties (such as vertical-align) are correctly
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// set on the fragment(s).
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let mut data_ref = self.mutate_data().unwrap();
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let mut data = &mut *data_ref;
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let cloned_parent_style = parent_style.unwrap().clone();
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data.style = Some(cloned_parent_style);
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} else {
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let mut damage = self.cascade_node_pseudo_element(
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layout_context,
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parent_style,
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&applicable_declarations.normal,
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&mut data.style,
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applicable_declarations_cache,
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new_animations_sender,
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applicable_declarations.normal_shareable,
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true);
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if !applicable_declarations.before.is_empty() {
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damage = damage | self.cascade_node_pseudo_element(
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let mut damage;
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{
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let mut data_ref = self.mutate_data().unwrap();
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let mut data = &mut *data_ref;
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damage = self.cascade_node_pseudo_element(
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layout_context,
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Some(data.style.as_ref().unwrap()),
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&*applicable_declarations.before,
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&mut data.before_style,
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parent_style,
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&applicable_declarations.normal,
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&mut data.style,
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applicable_declarations_cache,
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new_animations_sender,
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false,
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false);
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}
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if !applicable_declarations.after.is_empty() {
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damage = damage | self.cascade_node_pseudo_element(
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layout_context,
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Some(data.style.as_ref().unwrap()),
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&*applicable_declarations.after,
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&mut data.after_style,
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applicable_declarations_cache,
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new_animations_sender,
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false,
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false);
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applicable_declarations.normal_shareable,
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true);
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if !applicable_declarations.before.is_empty() {
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damage = damage | self.cascade_node_pseudo_element(
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layout_context,
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Some(data.style.as_ref().unwrap()),
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&*applicable_declarations.before,
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&mut data.before_style,
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applicable_declarations_cache,
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new_animations_sender,
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false,
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false);
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}
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if !applicable_declarations.after.is_empty() {
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damage = damage | self.cascade_node_pseudo_element(
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layout_context,
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Some(data.style.as_ref().unwrap()),
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&*applicable_declarations.after,
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&mut data.after_style,
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applicable_declarations_cache,
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new_animations_sender,
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false,
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false);
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}
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}
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// FIXME(bholley): This is the only dependency in this file on non-style
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// stuff.
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let layout_data: &mut PrivateLayoutData = transmute(data);
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layout_data.restyle_damage = damage;
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// This method needs to borrow the data as mutable, so make sure data_ref goes out of
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// scope first.
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self.set_restyle_damage(damage);
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}
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}
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}
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impl<'ln, N: TNode<'ln>> MatchMethods<'ln> for N {}
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@ -231,7 +231,7 @@ fn recalc_style_at<'a, 'ln, N: LayoutNode<'ln>> (context: &'a DomTraversalContex
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}
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StyleSharingResult::StyleWasShared(index, damage) => {
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style_sharing_candidate_cache.touch(index);
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node.to_threadsafe().set_restyle_damage(damage);
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node.set_restyle_damage(damage);
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}
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}
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}
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