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layout_thread: Don't build the display list for script queries unless
it's needed. Makes cnn.com faster.
This commit is contained in:
Patrick Walton
parent
83a73a979e
commit
031a4ed6ca
1 changed files with 150 additions and 102 deletions
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@ -65,7 +65,7 @@ use layout::animation;
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use layout::construct::ConstructionResult;
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use layout::context::{LayoutContext, SharedLayoutContext, heap_size_of_local_context};
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use layout::display_list_builder::ToGfxColor;
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use layout::flow::{self, Flow, ImmutableFlowUtils, MutableOwnedFlowUtils};
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use layout::flow::{self, Flow, ImmutableFlowUtils, MutableFlowUtils, MutableOwnedFlowUtils};
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use layout::flow_ref::{self, FlowRef};
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use layout::incremental::{LayoutDamageComputation, REFLOW_ENTIRE_DOCUMENT};
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use layout::layout_debug;
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@ -630,6 +630,7 @@ impl LayoutThread {
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reflow_info.goal);
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self.perform_post_style_recalc_layout_passes(&reflow_info,
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None,
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None,
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&mut *rw_data,
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&mut layout_context);
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@ -901,8 +902,11 @@ impl LayoutThread {
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traversal);
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}
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/// Computes the stacking-relative positions of all flows and, if the painting is dirty and the
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/// reflow goal and query type need it, builds the display list.
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fn compute_abs_pos_and_build_display_list(&mut self,
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data: &Reflow,
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query_type: Option<&ReflowQueryType>,
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document: Option<&ServoLayoutDocument>,
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layout_root: &mut Flow,
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shared_layout_context: &mut SharedLayoutContext,
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@ -928,7 +932,12 @@ impl LayoutThread {
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if flow::base(layout_root).restyle_damage.contains(REPAINT) ||
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rw_data.display_list.is_none() {
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let mut root_stacking_context = StackingContext::new(StackingContextId::new(0),
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let display_list_needed = query_type.map(reflow_query_type_needs_display_list)
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.unwrap_or(false);
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match (data.goal, display_list_needed) {
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(ReflowGoal::ForDisplay, _) | (ReflowGoal::ForScriptQuery, true) => {
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let mut root_stacking_context =
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StackingContext::new(StackingContextId::new(0),
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StackingContextType::Real,
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&Rect::zero(),
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&Rect::zero(),
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@ -968,7 +977,11 @@ impl LayoutThread {
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root_background_color));
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rw_data.display_list =
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Some(Arc::new(DisplayList::new(root_stacking_context, display_list_entries)))
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Some(Arc::new(DisplayList::new(root_stacking_context,
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display_list_entries)))
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}
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(ReflowGoal::ForScriptQuery, false) => {}
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}
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}
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if data.goal != ReflowGoal::ForDisplay {
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@ -1230,13 +1243,26 @@ impl LayoutThread {
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// Perform post-style recalculation layout passes.
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self.perform_post_style_recalc_layout_passes(&data.reflow_info,
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Some(&data.query_type),
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Some(&document),
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&mut rw_data,
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&mut shared_layout_context);
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if let Some(mut root_flow) = self.root_flow.clone() {
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self.respond_to_query_if_necessary(&data.query_type,
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&mut *rw_data,
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&mut shared_layout_context);
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}
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fn respond_to_query_if_necessary(&mut self,
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query_type: &ReflowQueryType,
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rw_data: &mut LayoutThreadData,
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shared_layout_context: &mut SharedLayoutContext) {
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let mut root_flow = match self.root_flow.clone() {
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Some(root_flow) => root_flow,
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None => return,
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};
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let root_flow = flow_ref::deref_mut(&mut root_flow);
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match data.query_type {
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match *query_type {
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ReflowQueryType::ContentBoxQuery(node) => {
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let node = unsafe { ServoLayoutNode::new(&node) };
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rw_data.content_box_response = process_content_box_request(node, root_flow);
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@ -1246,12 +1272,10 @@ impl LayoutThread {
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rw_data.content_boxes_response = process_content_boxes_request(node, root_flow);
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},
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ReflowQueryType::HitTestQuery(translated_point, client_point, update_cursor) => {
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let translated_point =
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Point2D::new(Au::from_f32_px(translated_point.x),
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let translated_point = Point2D::new(Au::from_f32_px(translated_point.x),
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Au::from_f32_px(translated_point.y));
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let client_point =
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Point2D::new(Au::from_f32_px(client_point.x),
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let client_point = Point2D::new(Au::from_f32_px(client_point.x),
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Au::from_f32_px(client_point.y));
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let result = rw_data.display_list
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@ -1299,7 +1323,6 @@ impl LayoutThread {
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ReflowQueryType::NoQuery => {}
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}
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}
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}
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fn set_visible_rects<'a, 'b>(&mut self,
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new_visible_rects: Vec<(LayerId, Rect<Au>)>,
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@ -1353,7 +1376,11 @@ impl LayoutThread {
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false,
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reflow_info.goal);
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self.perform_post_main_layout_passes(&reflow_info, None, &mut *rw_data, &mut layout_context);
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self.perform_post_main_layout_passes(&reflow_info,
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None,
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None,
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&mut *rw_data,
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&mut layout_context);
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true
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}
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@ -1411,6 +1438,7 @@ impl LayoutThread {
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}
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self.perform_post_style_recalc_layout_passes(&reflow_info,
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None,
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None,
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&mut *rw_data,
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&mut layout_context);
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@ -1434,6 +1462,7 @@ impl LayoutThread {
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return
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}
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self.perform_post_style_recalc_layout_passes(&reflow_info,
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None,
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None,
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&mut *rw_data,
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&mut layout_context);
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@ -1441,6 +1470,7 @@ impl LayoutThread {
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fn perform_post_style_recalc_layout_passes(&mut self,
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data: &Reflow,
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query_type: Option<&ReflowQueryType>,
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document: Option<&ServoLayoutDocument>,
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rw_data: &mut LayoutThreadData,
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layout_context: &mut SharedLayoutContext) {
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@ -1516,18 +1546,24 @@ impl LayoutThread {
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flow_ref::deref_mut(&mut root_flow) as &mut Flow);
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});
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self.perform_post_main_layout_passes(data, document, rw_data, layout_context);
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self.perform_post_main_layout_passes(data,
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query_type,
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document,
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rw_data,
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layout_context);
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}
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}
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fn perform_post_main_layout_passes(&mut self,
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data: &Reflow,
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query_type: Option<&ReflowQueryType>,
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document: Option<&ServoLayoutDocument>,
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rw_data: &mut LayoutThreadData,
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layout_context: &mut SharedLayoutContext) {
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// Build the display list if necessary, and send it to the painter.
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if let Some(mut root_flow) = self.root_flow.clone() {
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self.compute_abs_pos_and_build_display_list(data,
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query_type,
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document,
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flow_ref::deref_mut(&mut root_flow),
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&mut *layout_context,
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@ -1645,6 +1681,18 @@ fn get_ua_stylesheets() -> Result<UserAgentStylesheets, &'static str> {
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})
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}
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/// Returns true if the given reflow query type needs a full, up-to-date display list to be present
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/// or false if it only needs stacking-relative positions.
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fn reflow_query_type_needs_display_list(query_type: &ReflowQueryType) -> bool {
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match *query_type {
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ReflowQueryType::HitTestQuery(..) => true,
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ReflowQueryType::ContentBoxQuery(_) | ReflowQueryType::ContentBoxesQuery(_) |
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ReflowQueryType::NodeGeometryQuery(_) | ReflowQueryType::NodeScrollGeometryQuery(_) |
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ReflowQueryType::NodeOverflowQuery(_) | ReflowQueryType::NodeLayerIdQuery(_) |
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ReflowQueryType::ResolvedStyleQuery(..) | ReflowQueryType::OffsetParentQuery(_) |
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ReflowQueryType::MarginStyleQuery(_) | ReflowQueryType::NoQuery => false,
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}
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}
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lazy_static! {
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static ref UA_STYLESHEETS: UserAgentStylesheets = {
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