mirror of
https://github.com/servo/servo.git
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style: Rewrite restyling to split between resolving styles and handling changes.
MozReview-Commit-ID: 4BzjbLbFebF
This commit is contained in:
Emilio Cobos Álvarez
parent
0ad2d39c30
commit
c6d5dbbb01
8 changed files with 485 additions and 1500 deletions
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@ -7,7 +7,6 @@
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#[cfg(feature = "servo")] use animation::Animation;
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use animation::PropertyAnimation;
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use app_units::Au;
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use arrayvec::ArrayVec;
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use bloom::StyleBloom;
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use cache::LRUCache;
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use data::{EagerPseudoStyles, ElementData};
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@ -19,8 +18,8 @@ use font_metrics::FontMetricsProvider;
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#[cfg(feature = "servo")] use parking_lot::RwLock;
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use properties::ComputedValues;
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use rule_tree::StrongRuleNode;
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use selector_parser::{EAGER_PSEUDO_COUNT, PseudoElement, SnapshotMap};
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use selectors::matching::{ElementSelectorFlags, VisitedHandlingMode};
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use selector_parser::{EAGER_PSEUDO_COUNT, SnapshotMap};
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use selectors::matching::ElementSelectorFlags;
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use shared_lock::StylesheetGuards;
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use sharing::{ValidationData, StyleSharingCandidateCache};
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use std::fmt;
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@ -162,36 +161,17 @@ impl<'a> SharedStyleContext<'a> {
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/// within the `CurrentElementInfo`. At the end of the cascade, they are folded
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/// down into the main `ComputedValues` to reduce memory usage per element while
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/// still remaining accessible.
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#[derive(Clone)]
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#[derive(Clone, Default)]
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pub struct CascadeInputs {
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/// The rule node representing the ordered list of rules matched for this
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/// node.
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rules: Option<StrongRuleNode>,
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pub rules: Option<StrongRuleNode>,
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/// The rule node representing the ordered list of rules matched for this
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/// node if visited, only computed if there's a relevant link for this
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/// element. A element's "relevant link" is the element being matched if it
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/// is a link or the nearest ancestor link.
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visited_rules: Option<StrongRuleNode>,
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/// The element's computed values if visited, only computed if there's a
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/// relevant link for this element. A element's "relevant link" is the
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/// element being matched if it is a link or the nearest ancestor link.
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///
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/// We also store a reference to this inside the regular ComputedValues to
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/// avoid refactoring all APIs to become aware of multiple ComputedValues
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/// objects.
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visited_values: Option<Arc<ComputedValues>>,
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}
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impl Default for CascadeInputs {
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fn default() -> Self {
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CascadeInputs {
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rules: None,
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visited_rules: None,
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visited_values: None,
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}
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}
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pub visited_rules: Option<StrongRuleNode>,
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}
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impl CascadeInputs {
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@ -200,125 +180,8 @@ impl CascadeInputs {
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CascadeInputs {
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rules: style.rules.clone(),
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visited_rules: style.get_visited_style().and_then(|v| v.rules.clone()),
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// Values will be re-cascaded if necessary, so this can be None.
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visited_values: None,
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}
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}
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/// Whether there are any rules. Rules will be present after unvisited
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/// matching or pulled from a previous cascade if no matching is expected.
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pub fn has_rules(&self) -> bool {
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self.rules.is_some()
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}
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/// Gets a mutable reference to the rule node, if any.
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pub fn get_rules_mut(&mut self) -> Option<&mut StrongRuleNode> {
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self.rules.as_mut()
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}
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/// Gets a reference to the rule node, if any.
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pub fn get_rules(&self) -> Option<&StrongRuleNode> {
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self.rules.as_ref()
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}
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/// Gets a reference to the rule node. Panic if the element does not have
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/// rule node.
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pub fn rules(&self) -> &StrongRuleNode {
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self.rules.as_ref().unwrap()
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}
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/// Sets the rule node depending on visited mode.
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/// Returns whether the rules changed.
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pub fn set_rules(&mut self,
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visited_handling: VisitedHandlingMode,
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rules: StrongRuleNode)
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-> bool {
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match visited_handling {
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VisitedHandlingMode::AllLinksVisitedAndUnvisited => {
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unreachable!("We should never try to selector match with \
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AllLinksVisitedAndUnvisited");
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},
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VisitedHandlingMode::AllLinksUnvisited => self.set_unvisited_rules(rules),
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VisitedHandlingMode::RelevantLinkVisited => self.set_visited_rules(rules),
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}
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}
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/// Sets the unvisited rule node, and returns whether it changed.
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fn set_unvisited_rules(&mut self, rules: StrongRuleNode) -> bool {
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if let Some(ref old_rules) = self.rules {
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if *old_rules == rules {
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return false
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}
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}
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self.rules = Some(rules);
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true
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}
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/// Whether there are any visited rules. Visited rules will be present
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/// after visited matching or pulled from a previous cascade (assuming there
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/// was a relevant link at the time) if no matching is expected.
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pub fn has_visited_rules(&self) -> bool {
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self.visited_rules.is_some()
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}
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/// Gets a reference to the visited rule node, if any.
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pub fn get_visited_rules(&self) -> Option<&StrongRuleNode> {
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self.visited_rules.as_ref()
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}
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/// Gets a mutable reference to the visited rule node, if any.
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pub fn get_visited_rules_mut(&mut self) -> Option<&mut StrongRuleNode> {
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self.visited_rules.as_mut()
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}
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/// Gets a reference to the visited rule node. Panic if the element does not
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/// have visited rule node.
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pub fn visited_rules(&self) -> &StrongRuleNode {
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self.visited_rules.as_ref().unwrap()
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}
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/// Sets the visited rule node, and returns whether it changed.
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fn set_visited_rules(&mut self, rules: StrongRuleNode) -> bool {
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if let Some(ref old_rules) = self.visited_rules {
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if *old_rules == rules {
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return false
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}
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}
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self.visited_rules = Some(rules);
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true
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}
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/// Takes the visited rule node.
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pub fn take_visited_rules(&mut self) -> Option<StrongRuleNode> {
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self.visited_rules.take()
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}
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/// Whether there are any visited values.
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pub fn has_visited_values(&self) -> bool {
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self.visited_values.is_some()
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}
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/// Gets a reference to the visited computed values. Panic if the element
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/// does not have visited computed values.
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pub fn visited_values(&self) -> &Arc<ComputedValues> {
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self.visited_values.as_ref().unwrap()
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}
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/// Sets the visited computed values.
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pub fn set_visited_values(&mut self, values: Arc<ComputedValues>) {
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self.visited_values = Some(values);
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}
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/// Take the visited computed values.
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pub fn take_visited_values(&mut self) -> Option<Arc<ComputedValues>> {
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self.visited_values.take()
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}
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/// Clone the visited computed values Arc. Used to store a reference to the
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/// visited values inside the regular values.
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pub fn clone_visited_values(&self) -> Option<Arc<ComputedValues>> {
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self.visited_values.clone()
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}
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}
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// We manually implement Debug for CascadeInputs so that we can avoid the
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@ -363,160 +226,9 @@ impl EagerPseudoCascadeInputs {
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}))
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}
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/// Returns whether there are any pseudo inputs.
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pub fn is_empty(&self) -> bool {
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self.0.is_none()
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}
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/// Returns a reference to the inputs for a given eager pseudo, if they exist.
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pub fn get(&self, pseudo: &PseudoElement) -> Option<&CascadeInputs> {
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debug_assert!(pseudo.is_eager());
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self.0.as_ref().and_then(|p| p[pseudo.eager_index()].as_ref())
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}
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/// Returns a mutable reference to the inputs for a given eager pseudo, if they exist.
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pub fn get_mut(&mut self, pseudo: &PseudoElement) -> Option<&mut CascadeInputs> {
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debug_assert!(pseudo.is_eager());
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self.0.as_mut().and_then(|p| p[pseudo.eager_index()].as_mut())
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}
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/// Returns true if the EagerPseudoCascadeInputs has a inputs for |pseudo|.
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pub fn has(&self, pseudo: &PseudoElement) -> bool {
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self.get(pseudo).is_some()
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}
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/// Inserts a pseudo-element. The pseudo-element must not already exist.
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pub fn insert(&mut self, pseudo: &PseudoElement, inputs: CascadeInputs) {
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debug_assert!(!self.has(pseudo));
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if self.0.is_none() {
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self.0 = Some(Default::default());
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}
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self.0.as_mut().unwrap()[pseudo.eager_index()] = Some(inputs);
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}
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/// Removes a pseudo-element inputs if they exist, and returns it.
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pub fn take(&mut self, pseudo: &PseudoElement) -> Option<CascadeInputs> {
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let result = match self.0.as_mut() {
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None => return None,
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Some(arr) => arr[pseudo.eager_index()].take(),
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};
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let empty = self.0.as_ref().unwrap().iter().all(|x| x.is_none());
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if empty {
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self.0 = None;
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}
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result
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}
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/// Returns a list of the pseudo-elements.
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pub fn keys(&self) -> ArrayVec<[PseudoElement; EAGER_PSEUDO_COUNT]> {
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let mut v = ArrayVec::new();
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if let Some(ref arr) = self.0 {
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for i in 0..EAGER_PSEUDO_COUNT {
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if arr[i].is_some() {
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v.push(PseudoElement::from_eager_index(i));
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}
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}
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}
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v
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}
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/// Adds the unvisited rule node for a given pseudo-element, which may or
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/// may not exist.
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///
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/// Returns true if the pseudo-element is new.
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fn add_unvisited_rules(&mut self,
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pseudo: &PseudoElement,
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rules: StrongRuleNode)
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-> bool {
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if let Some(mut inputs) = self.get_mut(pseudo) {
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inputs.set_unvisited_rules(rules);
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return false
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}
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let mut inputs = CascadeInputs::default();
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inputs.set_unvisited_rules(rules);
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self.insert(pseudo, inputs);
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true
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}
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/// Remove the unvisited rule node for a given pseudo-element, which may or
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/// may not exist. Since removing the rule node implies we don't need any
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/// other data for the pseudo, take the entire pseudo if found.
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///
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/// Returns true if the pseudo-element was removed.
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fn remove_unvisited_rules(&mut self, pseudo: &PseudoElement) -> bool {
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self.take(pseudo).is_some()
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}
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/// Adds the visited rule node for a given pseudo-element. It is assumed to
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/// already exist because unvisited inputs should have been added first.
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///
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/// Returns true if the pseudo-element is new. (Always false, but returns a
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/// bool for parity with `add_unvisited_rules`.)
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fn add_visited_rules(&mut self,
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pseudo: &PseudoElement,
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rules: StrongRuleNode)
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-> bool {
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debug_assert!(self.has(pseudo));
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let mut inputs = self.get_mut(pseudo).unwrap();
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inputs.set_visited_rules(rules);
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false
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}
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/// Remove the visited rule node for a given pseudo-element, which may or
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/// may not exist.
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///
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/// Returns true if the psuedo-element was removed. (Always false, but
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/// returns a bool for parity with `remove_unvisited_rules`.)
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fn remove_visited_rules(&mut self, pseudo: &PseudoElement) -> bool {
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if let Some(mut inputs) = self.get_mut(pseudo) {
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inputs.take_visited_rules();
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}
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false
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}
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/// Adds a rule node for a given pseudo-element, which may or may not exist.
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/// The type of rule node depends on the visited mode.
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///
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/// Returns true if the pseudo-element is new.
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pub fn add_rules(&mut self,
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pseudo: &PseudoElement,
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visited_handling: VisitedHandlingMode,
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rules: StrongRuleNode)
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-> bool {
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match visited_handling {
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VisitedHandlingMode::AllLinksVisitedAndUnvisited => {
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unreachable!("We should never try to selector match with \
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AllLinksVisitedAndUnvisited");
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},
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VisitedHandlingMode::AllLinksUnvisited => {
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self.add_unvisited_rules(&pseudo, rules)
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},
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VisitedHandlingMode::RelevantLinkVisited => {
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self.add_visited_rules(&pseudo, rules)
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},
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}
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}
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/// Removes a rule node for a given pseudo-element, which may or may not
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/// exist. The type of rule node depends on the visited mode.
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///
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/// Returns true if the psuedo-element was removed.
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pub fn remove_rules(&mut self,
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pseudo: &PseudoElement,
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visited_handling: VisitedHandlingMode)
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-> bool {
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match visited_handling {
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VisitedHandlingMode::AllLinksVisitedAndUnvisited => {
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unreachable!("We should never try to selector match with \
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AllLinksVisitedAndUnvisited");
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},
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VisitedHandlingMode::AllLinksUnvisited => {
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self.remove_unvisited_rules(&pseudo)
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},
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VisitedHandlingMode::RelevantLinkVisited => {
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self.remove_visited_rules(&pseudo)
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},
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}
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/// Returns the list of rules, if they exist.
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pub fn into_array(self) -> Option<[Option<CascadeInputs>; EAGER_PSEUDO_COUNT]> {
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self.0
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}
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}
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@ -530,56 +242,20 @@ impl EagerPseudoCascadeInputs {
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#[derive(Clone, Debug)]
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pub struct ElementCascadeInputs {
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/// The element's cascade inputs.
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pub primary: Option<CascadeInputs>,
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pub primary: CascadeInputs,
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/// A list of the inputs for the element's eagerly-cascaded pseudo-elements.
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pub pseudos: EagerPseudoCascadeInputs,
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}
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impl Default for ElementCascadeInputs {
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/// Construct an empty `ElementCascadeInputs`.
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fn default() -> Self {
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ElementCascadeInputs {
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primary: None,
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pseudos: EagerPseudoCascadeInputs(None),
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}
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}
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}
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impl ElementCascadeInputs {
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/// Construct inputs from previous cascade results, if any.
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pub fn new_from_element_data(data: &ElementData) -> Self {
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if !data.has_styles() {
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return ElementCascadeInputs::default()
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}
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debug_assert!(data.has_styles());
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ElementCascadeInputs {
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primary: Some(CascadeInputs::new_from_style(data.styles.primary())),
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primary: CascadeInputs::new_from_style(data.styles.primary()),
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pseudos: EagerPseudoCascadeInputs::new_from_style(&data.styles.pseudos),
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}
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}
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/// Returns whether we have primary inputs.
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pub fn has_primary(&self) -> bool {
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self.primary.is_some()
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}
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/// Gets the primary inputs. Panic if unavailable.
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pub fn primary(&self) -> &CascadeInputs {
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self.primary.as_ref().unwrap()
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}
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/// Gets the mutable primary inputs. Panic if unavailable.
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pub fn primary_mut(&mut self) -> &mut CascadeInputs {
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self.primary.as_mut().unwrap()
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}
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/// Ensure primary inputs exist and create them if they do not.
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/// Returns a mutable reference to the primary inputs.
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pub fn ensure_primary(&mut self) -> &mut CascadeInputs {
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if self.primary.is_none() {
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self.primary = Some(CascadeInputs::default());
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}
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self.primary.as_mut().unwrap()
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}
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}
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/// Information about the current element being processed. We group this
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@ -598,11 +274,6 @@ pub struct CurrentElementInfo {
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/// A Vec of possibly expired animations. Used only by Servo.
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#[allow(dead_code)]
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pub possibly_expired_animations: Vec<PropertyAnimation>,
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/// Temporary storage for various intermediate inputs that are eventually
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/// used by by the cascade. At the end of the cascade, they are folded down
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/// into the main `ComputedValues` to reduce memory usage per element while
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/// still remaining accessible.
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pub cascade_inputs: ElementCascadeInputs,
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}
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/// Statistics gathered during the traversal. We gather statistics on each
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|
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@ -906,7 +577,6 @@ impl<E: TElement> ThreadLocalStyleContext<E> {
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is_initial_style: !data.has_styles(),
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validation_data: ValidationData::default(),
|
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possibly_expired_animations: Vec::new(),
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cascade_inputs: ElementCascadeInputs::default(),
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});
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}
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|
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@ -951,24 +621,6 @@ pub struct StyleContext<'a, E: TElement + 'a> {
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pub thread_local: &'a mut ThreadLocalStyleContext<E>,
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}
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impl<'a, E: TElement + 'a> StyleContext<'a, E> {
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/// Returns a reference to the cascade inputs. Panics if there is no
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/// `CurrentElementInfo`.
|
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pub fn cascade_inputs(&self) -> &ElementCascadeInputs {
|
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&self.thread_local.current_element_info
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.as_ref().unwrap()
|
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.cascade_inputs
|
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}
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|
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/// Returns a mutable reference to the cascade inputs. Panics if there is
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/// no `CurrentElementInfo`.
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pub fn cascade_inputs_mut(&mut self) -> &mut ElementCascadeInputs {
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&mut self.thread_local.current_element_info
|
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.as_mut().unwrap()
|
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.cascade_inputs
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}
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}
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/// Why we're doing reflow.
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#[derive(PartialEq, Copy, Clone, Debug)]
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pub enum ReflowGoal {
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|
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|||
File diff suppressed because it is too large
Load diff
|
|
@ -2576,11 +2576,11 @@ pub fn cascade(device: &Device,
|
|||
flags: CascadeFlags,
|
||||
quirks_mode: QuirksMode)
|
||||
-> ComputedValues {
|
||||
debug_assert_eq!(parent_style.is_some(), layout_parent_style.is_some());
|
||||
debug_assert!(layout_parent_style.is_none() || parent_style.is_some());
|
||||
let (inherited_style, layout_parent_style) = match parent_style {
|
||||
Some(parent_style) => {
|
||||
(parent_style,
|
||||
layout_parent_style.unwrap())
|
||||
layout_parent_style.unwrap_or(parent_style))
|
||||
},
|
||||
None => {
|
||||
(device.default_computed_values(),
|
||||
|
|
|
|||
|
|
@ -75,7 +75,7 @@ use dom::{TElement, SendElement};
|
|||
use matching::{ChildCascadeRequirement, MatchMethods};
|
||||
use properties::ComputedValues;
|
||||
use selector_parser::RestyleDamage;
|
||||
use selectors::matching::{ElementSelectorFlags, VisitedHandlingMode, StyleRelations};
|
||||
use selectors::matching::{ElementSelectorFlags, VisitedHandlingMode};
|
||||
use smallvec::SmallVec;
|
||||
use std::mem;
|
||||
use std::ops::Deref;
|
||||
|
|
@ -494,11 +494,8 @@ impl<E: TElement> StyleSharingCandidateCache<E> {
|
|||
pub fn insert_if_possible(&mut self,
|
||||
element: &E,
|
||||
style: &ComputedValues,
|
||||
relations: StyleRelations,
|
||||
mut validation_data: ValidationData,
|
||||
validation_data: ValidationData,
|
||||
dom_depth: usize) {
|
||||
use selectors::matching::AFFECTED_BY_PRESENTATIONAL_HINTS;
|
||||
|
||||
let parent = match element.traversal_parent() {
|
||||
Some(element) => element,
|
||||
None => {
|
||||
|
|
@ -525,13 +522,6 @@ impl<E: TElement> StyleSharingCandidateCache<E> {
|
|||
return;
|
||||
}
|
||||
|
||||
// Take advantage of the information we've learned during
|
||||
// selector-matching.
|
||||
if !relations.intersects(AFFECTED_BY_PRESENTATIONAL_HINTS) {
|
||||
debug_assert!(validation_data.pres_hints.as_ref().map_or(true, |v| v.is_empty()));
|
||||
validation_data.pres_hints = Some(SmallVec::new());
|
||||
}
|
||||
|
||||
debug!("Inserting into cache: {:?} with parent {:?}", element, parent);
|
||||
|
||||
if self.dom_depth != dom_depth {
|
||||
|
|
|
|||
|
|
@ -6,7 +6,7 @@
|
|||
|
||||
use applicable_declarations::ApplicableDeclarationList;
|
||||
use cascade_info::CascadeInfo;
|
||||
use context::StyleContext;
|
||||
use context::{CascadeInputs, ElementCascadeInputs, StyleContext};
|
||||
use data::{ElementStyles, EagerPseudoStyles};
|
||||
use dom::TElement;
|
||||
use log::LogLevel::Trace;
|
||||
|
|
@ -42,11 +42,37 @@ struct MatchingResults {
|
|||
pub struct PrimaryStyle {
|
||||
/// The style per se.
|
||||
pub style: Arc<ComputedValues>,
|
||||
}
|
||||
|
||||
/// Whether a relevant link was found while computing this style.
|
||||
///
|
||||
/// FIXME(emilio): Slightly out of place?
|
||||
pub relevant_link_found: bool,
|
||||
fn with_default_parent_styles<E, F, R>(element: E, f: F) -> R
|
||||
where
|
||||
E: TElement,
|
||||
F: FnOnce(Option<&ComputedValues>, Option<&ComputedValues>) -> R,
|
||||
{
|
||||
let parent_el = element.inheritance_parent();
|
||||
let parent_data = parent_el.as_ref().and_then(|e| e.borrow_data());
|
||||
let parent_style = parent_data.as_ref().map(|d| {
|
||||
// Sometimes Gecko eagerly styles things without processing
|
||||
// pending restyles first. In general we'd like to avoid this,
|
||||
// but there can be good reasons (for example, needing to
|
||||
// construct a frame for some small piece of newly-added
|
||||
// content in order to do something specific with that frame,
|
||||
// but not wanting to flush all of layout).
|
||||
debug_assert!(cfg!(feature = "gecko") ||
|
||||
parent_el.unwrap().has_current_styles(d));
|
||||
d.styles.primary()
|
||||
});
|
||||
|
||||
let mut layout_parent_el = parent_el.clone();
|
||||
let layout_parent_data;
|
||||
let mut layout_parent_style = parent_style;
|
||||
if parent_style.map_or(false, |s| s.is_display_contents()) {
|
||||
layout_parent_el = Some(layout_parent_el.unwrap().layout_parent());
|
||||
layout_parent_data = layout_parent_el.as_ref().unwrap().borrow_data().unwrap();
|
||||
layout_parent_style = Some(layout_parent_data.styles.primary());
|
||||
}
|
||||
|
||||
f(parent_style.map(|s| &**s), layout_parent_style.map(|s| &**s))
|
||||
}
|
||||
|
||||
impl<'a, 'ctx, 'le, E> StyleResolverForElement<'a, 'ctx, 'le, E>
|
||||
|
|
@ -95,7 +121,7 @@ where
|
|||
|
||||
if should_compute_visited_style {
|
||||
visited_style = Some(self.cascade_style(
|
||||
visited_rules.as_ref().unwrap_or(&primary_results.rule_node),
|
||||
visited_rules.as_ref(),
|
||||
/* style_if_visited = */ None,
|
||||
parent_style,
|
||||
layout_parent_style,
|
||||
|
|
@ -105,7 +131,7 @@ where
|
|||
}
|
||||
|
||||
let style = self.cascade_style(
|
||||
&primary_results.rule_node,
|
||||
Some(&primary_results.rule_node),
|
||||
visited_style,
|
||||
parent_style,
|
||||
layout_parent_style,
|
||||
|
|
@ -113,7 +139,7 @@ where
|
|||
/* pseudo = */ None,
|
||||
);
|
||||
|
||||
PrimaryStyle { style, relevant_link_found, }
|
||||
PrimaryStyle { style, }
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -137,7 +163,7 @@ where
|
|||
}
|
||||
}
|
||||
|
||||
{
|
||||
if self.element.implemented_pseudo_element().is_none() {
|
||||
let layout_parent_style_for_pseudo =
|
||||
if primary_style.style.is_display_contents() {
|
||||
layout_parent_style
|
||||
|
|
@ -163,6 +189,115 @@ where
|
|||
}
|
||||
}
|
||||
|
||||
/// Resolve an element's styles with the default inheritance parent/layout
|
||||
/// parents.
|
||||
pub fn resolve_style_with_default_parents(&mut self) -> ElementStyles {
|
||||
with_default_parent_styles(self.element, |parent_style, layout_parent_style| {
|
||||
self.resolve_style(parent_style, layout_parent_style)
|
||||
})
|
||||
}
|
||||
|
||||
/// Cascade a set of rules, using the default parent for inheritance.
|
||||
pub fn cascade_style_and_visited_with_default_parents(
|
||||
&mut self,
|
||||
inputs: CascadeInputs,
|
||||
) -> Arc<ComputedValues> {
|
||||
with_default_parent_styles(self.element, |parent_style, layout_parent_style| {
|
||||
self.cascade_style_and_visited(
|
||||
inputs,
|
||||
parent_style,
|
||||
layout_parent_style,
|
||||
/* pseudo = */ None
|
||||
)
|
||||
})
|
||||
}
|
||||
|
||||
fn cascade_style_and_visited(
|
||||
&mut self,
|
||||
inputs: CascadeInputs,
|
||||
parent_style: Option<&ComputedValues>,
|
||||
layout_parent_style: Option<&ComputedValues>,
|
||||
pseudo: Option<&PseudoElement>,
|
||||
) -> Arc<ComputedValues> {
|
||||
let mut style_if_visited = None;
|
||||
if parent_style.map_or(false, |s| s.get_visited_style().is_some()) ||
|
||||
inputs.visited_rules.is_some() {
|
||||
style_if_visited = Some(self.cascade_style(
|
||||
inputs.visited_rules.as_ref(),
|
||||
/* style_if_visited = */ None,
|
||||
parent_style,
|
||||
layout_parent_style,
|
||||
CascadeVisitedMode::Visited,
|
||||
pseudo,
|
||||
));
|
||||
}
|
||||
self.cascade_style(
|
||||
inputs.rules.as_ref(),
|
||||
style_if_visited,
|
||||
parent_style,
|
||||
layout_parent_style,
|
||||
CascadeVisitedMode::Unvisited,
|
||||
pseudo,
|
||||
)
|
||||
}
|
||||
|
||||
/// Cascade the element and pseudo-element styles with the default parents.
|
||||
pub fn cascade_styles_with_default_parents(
|
||||
&mut self,
|
||||
inputs: ElementCascadeInputs,
|
||||
) -> ElementStyles {
|
||||
use properties::longhands::display::computed_value::T as display;
|
||||
with_default_parent_styles(self.element, move |parent_style, layout_parent_style| {
|
||||
let primary_style = PrimaryStyle {
|
||||
style: self.cascade_style_and_visited(
|
||||
inputs.primary,
|
||||
parent_style,
|
||||
layout_parent_style,
|
||||
/* pseudo = */ None,
|
||||
),
|
||||
};
|
||||
|
||||
let mut pseudo_styles = EagerPseudoStyles::default();
|
||||
let pseudo_array = inputs.pseudos.into_array();
|
||||
if pseudo_array.is_none() ||
|
||||
primary_style.style.get_box().clone_display() == display::none {
|
||||
return ElementStyles {
|
||||
primary: Some(primary_style.style),
|
||||
pseudos: pseudo_styles,
|
||||
}
|
||||
}
|
||||
|
||||
{
|
||||
let layout_parent_style_for_pseudo =
|
||||
if primary_style.style.is_display_contents() {
|
||||
layout_parent_style
|
||||
} else {
|
||||
Some(&*primary_style.style)
|
||||
};
|
||||
|
||||
for (i, mut inputs) in pseudo_array.unwrap().iter_mut().enumerate() {
|
||||
if let Some(inputs) = inputs.take() {
|
||||
let pseudo = PseudoElement::from_eager_index(i);
|
||||
pseudo_styles.set(
|
||||
&pseudo,
|
||||
self.cascade_style_and_visited(
|
||||
inputs,
|
||||
Some(&*primary_style.style),
|
||||
layout_parent_style_for_pseudo,
|
||||
Some(&pseudo),
|
||||
)
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
ElementStyles {
|
||||
primary: Some(primary_style.style),
|
||||
pseudos: pseudo_styles,
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
fn resolve_pseudo_style(
|
||||
&mut self,
|
||||
pseudo: &PseudoElement,
|
||||
|
|
@ -179,33 +314,23 @@ where
|
|||
None => return None,
|
||||
};
|
||||
|
||||
let mut visited_style = None;
|
||||
if originating_element_style.relevant_link_found {
|
||||
let visited_rules = self.match_pseudo(
|
||||
let mut visited_rules = None;
|
||||
if originating_element_style.style.get_visited_style().is_some() {
|
||||
visited_rules = self.match_pseudo(
|
||||
&originating_element_style.style,
|
||||
pseudo,
|
||||
VisitedHandlingMode::RelevantLinkVisited,
|
||||
);
|
||||
|
||||
if let Some(ref rules) = visited_rules {
|
||||
visited_style = Some(self.cascade_style(
|
||||
rules,
|
||||
/* style_if_visited = */ None,
|
||||
Some(&originating_element_style.style),
|
||||
layout_parent_style,
|
||||
CascadeVisitedMode::Visited,
|
||||
Some(pseudo),
|
||||
));
|
||||
}
|
||||
}
|
||||
|
||||
Some(self.cascade_style(
|
||||
&rules,
|
||||
visited_style,
|
||||
Some(self.cascade_style_and_visited(
|
||||
CascadeInputs {
|
||||
rules: Some(rules),
|
||||
visited_rules
|
||||
},
|
||||
Some(&originating_element_style.style),
|
||||
layout_parent_style,
|
||||
CascadeVisitedMode::Unvisited,
|
||||
Some(pseudo)
|
||||
Some(pseudo),
|
||||
))
|
||||
}
|
||||
|
||||
|
|
@ -335,9 +460,9 @@ where
|
|||
|
||||
fn cascade_style(
|
||||
&mut self,
|
||||
rules: &StrongRuleNode,
|
||||
rules: Option<&StrongRuleNode>,
|
||||
style_if_visited: Option<Arc<ComputedValues>>,
|
||||
parent_style: Option<&ComputedValues>,
|
||||
mut parent_style: Option<&ComputedValues>,
|
||||
layout_parent_style: Option<&ComputedValues>,
|
||||
cascade_visited: CascadeVisitedMode,
|
||||
pseudo: Option<&PseudoElement>,
|
||||
|
|
@ -349,6 +474,9 @@ where
|
|||
cascade_flags.insert(SKIP_ROOT_AND_ITEM_BASED_DISPLAY_FIXUP);
|
||||
}
|
||||
if cascade_visited.visited_dependent_only() {
|
||||
parent_style = parent_style.map(|s| {
|
||||
s.get_visited_style().map(|s| &**s).unwrap_or(s)
|
||||
});
|
||||
cascade_flags.insert(VISITED_DEPENDENT_ONLY);
|
||||
}
|
||||
if self.element.is_native_anonymous() || pseudo.is_some() {
|
||||
|
|
@ -360,13 +488,12 @@ where
|
|||
let values =
|
||||
Arc::new(cascade(
|
||||
self.context.shared.stylist.device(),
|
||||
rules,
|
||||
rules.unwrap_or(self.context.shared.stylist.rule_tree().root()),
|
||||
&self.context.shared.guards,
|
||||
parent_style,
|
||||
layout_parent_style,
|
||||
style_if_visited,
|
||||
Some(&mut cascade_info),
|
||||
&*self.context.shared.error_reporter,
|
||||
&self.context.thread_local.font_metrics_provider,
|
||||
cascade_flags,
|
||||
self.context.shared.quirks_mode
|
||||
|
|
|
|||
|
|
@ -15,7 +15,6 @@ use font_metrics::FontMetricsProvider;
|
|||
use gecko_bindings::structs::{nsIAtom, StyleRuleInclusion};
|
||||
use invalidation::element::invalidation_map::InvalidationMap;
|
||||
use invalidation::media_queries::{EffectiveMediaQueryResults, ToMediaListKey};
|
||||
use matching::CascadeVisitedMode;
|
||||
use media_queries::Device;
|
||||
use properties::{self, CascadeFlags, ComputedValues};
|
||||
use properties::{AnimationRules, PropertyDeclarationBlock};
|
||||
|
|
@ -719,24 +718,30 @@ impl Stylist {
|
|||
{
|
||||
// We may have only visited rules in cases when we are actually
|
||||
// resolving, not probing, pseudo-element style.
|
||||
if !inputs.has_rules() && !inputs.has_visited_rules() {
|
||||
if inputs.rules.is_none() && inputs.visited_rules.is_none() {
|
||||
return None
|
||||
}
|
||||
|
||||
// We need to compute visited values if we have visited rules or if our
|
||||
// parent has visited values.
|
||||
let visited_values = if inputs.has_visited_rules() || parent_style.get_visited_style().is_some() {
|
||||
let visited_values = if inputs.visited_rules.is_some() || parent_style.get_visited_style().is_some() {
|
||||
// Slightly annoying: we know that inputs has either rules or
|
||||
// visited rules, but we can't do inputs.rules() up front because
|
||||
// maybe it just has visited rules, so can't unwrap_or.
|
||||
let rule_node = match inputs.get_visited_rules() {
|
||||
let rule_node = match inputs.visited_rules.as_ref() {
|
||||
Some(rules) => rules,
|
||||
None => inputs.rules()
|
||||
None => inputs.rules.as_ref().unwrap(),
|
||||
};
|
||||
// We want to use the visited bits (if any) from our parent style as
|
||||
// our parent.
|
||||
let mode = CascadeVisitedMode::Visited;
|
||||
let inherited_style = mode.values(parent_style);
|
||||
let inherited_style =
|
||||
parent_style.get_visited_style().unwrap_or(&*parent_style);
|
||||
|
||||
// FIXME(emilio): The lack of layout_parent_style here could be
|
||||
// worrying, but we're probably dropping the display fixup for
|
||||
// pseudos other than before and after, so it's probably ok.
|
||||
//
|
||||
// (Though the flags don't indicate so!)
|
||||
let computed =
|
||||
properties::cascade(&self.device,
|
||||
rule_node,
|
||||
|
|
@ -756,7 +761,7 @@ impl Stylist {
|
|||
|
||||
// We may not have non-visited rules, if we only had visited ones. In
|
||||
// that case we want to use the root rulenode for our non-visited rules.
|
||||
let rules = inputs.get_rules().unwrap_or(self.rule_tree.root());
|
||||
let rules = inputs.rules.as_ref().unwrap_or(self.rule_tree.root());
|
||||
|
||||
// Read the comment on `precomputed_values_for_pseudo` to see why it's
|
||||
// difficult to assert that display: contents nodes never arrive here
|
||||
|
|
@ -849,10 +854,10 @@ impl Stylist {
|
|||
let rule_node =
|
||||
self.rule_tree.compute_rule_node(&mut declarations, guards);
|
||||
debug_assert!(rule_node != *self.rule_tree.root());
|
||||
inputs.set_rules(VisitedHandlingMode::AllLinksUnvisited, rule_node);
|
||||
inputs.rules = Some(rule_node);
|
||||
}
|
||||
|
||||
if is_probe && !inputs.has_rules() {
|
||||
if is_probe && inputs.rules.is_none() {
|
||||
// When probing, don't compute visited styles if we have no
|
||||
// unvisited styles.
|
||||
return inputs;
|
||||
|
|
@ -880,8 +885,7 @@ impl Stylist {
|
|||
declarations.into_iter().map(|a| a.order_and_level()),
|
||||
guards);
|
||||
if rule_node != *self.rule_tree.root() {
|
||||
inputs.set_rules(VisitedHandlingMode::RelevantLinkVisited,
|
||||
rule_node);
|
||||
inputs.visited_rules = Some(rule_node);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -10,8 +10,9 @@ use data::{ElementData, ElementStyles};
|
|||
use dom::{NodeInfo, OpaqueNode, TElement, TNode};
|
||||
use invalidation::element::restyle_hints::{RECASCADE_SELF, RECASCADE_DESCENDANTS, RestyleHint};
|
||||
use matching::{ChildCascadeRequirement, MatchMethods};
|
||||
use sharing::{StyleSharingBehavior, StyleSharingTarget};
|
||||
use sharing::StyleSharingTarget;
|
||||
use smallvec::SmallVec;
|
||||
use style_resolver::StyleResolverForElement;
|
||||
use stylist::RuleInclusion;
|
||||
|
||||
/// A per-traversal-level chunk of data. This is sent down by the traversal, and
|
||||
|
|
@ -765,7 +766,8 @@ where
|
|||
data.restyle.set_restyled();
|
||||
}
|
||||
|
||||
match kind {
|
||||
let mut important_rules_changed = false;
|
||||
let new_styles = match kind {
|
||||
MatchAndCascade => {
|
||||
debug_assert!(!context.shared.traversal_flags.for_animation_only(),
|
||||
"MatchAndCascade shouldn't be processed during \
|
||||
|
|
@ -790,35 +792,62 @@ where
|
|||
|
||||
context.thread_local.statistics.elements_matched += 1;
|
||||
|
||||
important_rules_changed = true;
|
||||
|
||||
// Perform the matching and cascading.
|
||||
element.match_and_cascade(
|
||||
context,
|
||||
data,
|
||||
StyleSharingBehavior::Allow
|
||||
)
|
||||
let new_styles =
|
||||
StyleResolverForElement::new(element, context, RuleInclusion::All)
|
||||
.resolve_style_with_default_parents();
|
||||
|
||||
// If we previously tried to match this element against the cache,
|
||||
// the revalidation match results will already be cached. Otherwise
|
||||
// we'll have None, and compute them later on-demand.
|
||||
//
|
||||
// If we do have the results, grab them here to satisfy the borrow
|
||||
// checker.
|
||||
let validation_data =
|
||||
context.thread_local
|
||||
.current_element_info
|
||||
.as_mut().unwrap()
|
||||
.validation_data
|
||||
.take();
|
||||
|
||||
let dom_depth = context.thread_local.bloom_filter.matching_depth();
|
||||
context.thread_local
|
||||
.style_sharing_candidate_cache
|
||||
.insert_if_possible(
|
||||
&element,
|
||||
new_styles.primary(),
|
||||
validation_data,
|
||||
dom_depth
|
||||
);
|
||||
|
||||
new_styles
|
||||
}
|
||||
CascadeWithReplacements(flags) => {
|
||||
// Skipping full matching, load cascade inputs from previous values.
|
||||
*context.cascade_inputs_mut() =
|
||||
let mut cascade_inputs =
|
||||
ElementCascadeInputs::new_from_element_data(data);
|
||||
let important_rules_changed = element.replace_rules(flags, context);
|
||||
element.cascade_primary_and_pseudos(
|
||||
context,
|
||||
data,
|
||||
important_rules_changed
|
||||
)
|
||||
important_rules_changed =
|
||||
element.replace_rules(flags, context, &mut cascade_inputs);
|
||||
StyleResolverForElement::new(element, context, RuleInclusion::All)
|
||||
.cascade_styles_with_default_parents(cascade_inputs)
|
||||
}
|
||||
CascadeOnly => {
|
||||
// Skipping full matching, load cascade inputs from previous values.
|
||||
*context.cascade_inputs_mut() =
|
||||
let cascade_inputs =
|
||||
ElementCascadeInputs::new_from_element_data(data);
|
||||
element.cascade_primary_and_pseudos(
|
||||
context,
|
||||
data,
|
||||
/* important_rules_changed = */ false
|
||||
)
|
||||
StyleResolverForElement::new(element, context, RuleInclusion::All)
|
||||
.cascade_styles_with_default_parents(cascade_inputs)
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
element.finish_restyle(
|
||||
context,
|
||||
data,
|
||||
new_styles,
|
||||
important_rules_changed
|
||||
)
|
||||
}
|
||||
|
||||
fn preprocess_children<E, D>(
|
||||
|
|
|
|||
|
|
@ -664,32 +664,35 @@ pub extern "C" fn Servo_StyleSet_GetBaseComputedValuesForElement(raw_data: RawSe
|
|||
let doc_data = PerDocumentStyleData::from_ffi(raw_data).borrow();
|
||||
let global_style_data = &*GLOBAL_STYLE_DATA;
|
||||
let guard = global_style_data.shared_lock.read();
|
||||
let shared_context = create_shared_context(&global_style_data,
|
||||
&guard,
|
||||
&doc_data,
|
||||
TraversalFlags::empty(),
|
||||
unsafe { &*snapshots });
|
||||
|
||||
let element = GeckoElement(element);
|
||||
let element_data = element.borrow_data().unwrap();
|
||||
let styles = &element_data.styles;
|
||||
|
||||
let pseudo = PseudoElement::from_pseudo_type(pseudo_type);
|
||||
let pseudos = &styles.pseudos;
|
||||
let pseudo_style = match pseudo {
|
||||
Some(ref p) => {
|
||||
let style = pseudos.get(p);
|
||||
debug_assert!(style.is_some());
|
||||
style
|
||||
}
|
||||
None => None,
|
||||
if let Some(pseudo) = PseudoElement::from_pseudo_type(pseudo_type) {
|
||||
// This style already doesn't have animations.
|
||||
return styles
|
||||
.pseudos
|
||||
.get(&pseudo)
|
||||
.expect("GetBaseComputedValuesForElement for an unexisting pseudo?")
|
||||
.clone().into_strong();
|
||||
}
|
||||
|
||||
let shared = create_shared_context(&global_style_data,
|
||||
&guard,
|
||||
&doc_data,
|
||||
TraversalFlags::empty(),
|
||||
unsafe { &*snapshots });
|
||||
let mut tlc = ThreadLocalStyleContext::new(&shared);
|
||||
let mut context = StyleContext {
|
||||
shared: &shared,
|
||||
thread_local: &mut tlc,
|
||||
};
|
||||
|
||||
let provider = get_metrics_provider_for_product();
|
||||
element.get_base_style(&shared_context,
|
||||
&provider,
|
||||
styles.primary(),
|
||||
pseudo_style)
|
||||
.into_strong()
|
||||
element.get_base_style(
|
||||
&mut context,
|
||||
styles.primary(),
|
||||
).into_strong()
|
||||
}
|
||||
|
||||
#[no_mangle]
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue