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Auto merge of #13346 - pcwalton:cnn, r=notriddle

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layout: Make some major improvements to incremental layout to improve CNN.

CNN is still too slow to be usable, but this is a partial solution.

r? @notriddle (feel free to reassign if you like)

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This commit is contained in:
bors-servo 2016-09-26 20:57:59 -05:00 • committed by GitHub
commit cbe5458272
7 changed files with 284 additions and 199 deletions
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5
components/layout/block.rs
View file

@ -51,6 +51,7 @@ use model::{self, IntrinsicISizes, MarginCollapseInfo};
use model::{CollapsibleMargins, MaybeAuto, specified, specified_or_none};
use rustc_serialize::{Encodable, Encoder};
use script_layout_interface::restyle_damage::{BUBBLE_ISIZES, REFLOW, REFLOW_OUT_OF_FLOW};
use script_layout_interface::restyle_damage::REPOSITION;
use std::cmp::{max, min};
use std::fmt;
use std::sync::Arc;
@ -1842,6 +1843,8 @@ impl Flow for BlockFlow {
self.fragment.assign_replaced_block_size_if_necessary(containing_block_block_size);
if !self.base.flags.contains(IS_ABSOLUTELY_POSITIONED) {
self.base.position.size.block = self.fragment.border_box.size.block;
self.base.restyle_damage.remove(REFLOW_OUT_OF_FLOW | REFLOW);
self.fragment.restyle_damage.remove(REFLOW_OUT_OF_FLOW | REFLOW);
}
None
} else if self.is_root() || self.formatting_context_type() != FormattingContextType::None {
@ -2114,6 +2117,8 @@ impl Flow for BlockFlow {
flow::mut_base(kid).stacking_relative_position_of_display_port =
stacking_relative_position_of_display_port_for_children;
}
self.base.restyle_damage.remove(REPOSITION)
}
fn mark_as_root(&mut self) {

4
components/layout/flow.rs
View file

@ -42,7 +42,8 @@ use model::{CollapsibleMargins, IntrinsicISizes, MarginCollapseInfo};
use multicol::MulticolFlow;
use parallel::FlowParallelInfo;
use rustc_serialize::{Encodable, Encoder};
use script_layout_interface::restyle_damage::{RECONSTRUCT_FLOW, REFLOW, REFLOW_OUT_OF_FLOW, REPAINT, RestyleDamage};
use script_layout_interface::restyle_damage::{RECONSTRUCT_FLOW, REFLOW, REFLOW_OUT_OF_FLOW};
use script_layout_interface::restyle_damage::{REPAINT, REPOSITION, RestyleDamage};
use script_layout_interface::wrapper_traits::{PseudoElementType, ThreadSafeLayoutNode};
use std::{fmt, mem, raw};
use std::iter::Zip;
@ -320,6 +321,7 @@ pub trait Flow: fmt::Debug + Sync + Send + 'static {
/// Phase 4 of reflow: computes absolute positions.
fn compute_absolute_position(&mut self, _: &SharedLayoutContext) {
// The default implementation is a no-op.
mut_base(self).restyle_damage.remove(REPOSITION)
}
/// Phase 5 of reflow: builds display lists.

6
components/layout/inline.rs
View file

@ -25,8 +25,8 @@ use gfx_traits::print_tree::PrintTree;
use layout_debug;
use model::IntrinsicISizesContribution;
use range::{Range, RangeIndex};
use script_layout_interface::restyle_damage::{BUBBLE_ISIZES, REFLOW};
use script_layout_interface::restyle_damage::{REFLOW_OUT_OF_FLOW, RESOLVE_GENERATED_CONTENT};
use script_layout_interface::restyle_damage::{BUBBLE_ISIZES, REFLOW, REFLOW_OUT_OF_FLOW};
use script_layout_interface::restyle_damage::{REPOSITION, RESOLVE_GENERATED_CONTENT};
use script_layout_interface::wrapper_traits::PseudoElementType;
use std::{fmt, i32, isize, mem};
use std::cmp::max;
@ -1650,6 +1650,8 @@ impl Flow for InlineFlow {
_ => {}
}
}
self.base.restyle_damage.remove(REPOSITION)
}
fn update_late_computed_inline_position_if_necessary(&mut self, _: Au) {}

3
components/layout/sequential.rs
View file

@ -17,7 +17,7 @@ use generated_content::ResolveGeneratedContent;
use gfx::display_list::{DisplayItem, StackingContext};
use script_layout_interface::restyle_damage::{REFLOW, STORE_OVERFLOW};
use style::context::StyleContext;
use traversal::{AssignBSizes, AssignISizes, BubbleISizes, BuildDisplayList, ComputeAbsolutePositions};
use traversal::{AssignBSizes, AssignISizes, BubbleISizes, BuildDisplayList};
use util::opts;
pub use style::sequential::traverse_dom;
@ -78,7 +78,6 @@ pub fn build_display_list_for_subtree(flow_root: &mut Flow,
root_stacking_context: &mut StackingContext,
shared_layout_context: &SharedLayoutContext)
-> Vec<DisplayItem> {
flow_root.traverse_preorder(&ComputeAbsolutePositions { layout_context: shared_layout_context });
let mut children = vec![];
flow_root.collect_stacking_contexts(root_stacking_context.id,
&mut children);

136
components/layout/table_row.rs
View file

@ -21,6 +21,7 @@ use gfx_traits::print_tree::PrintTree;
use layout_debug;
use model::MaybeAuto;
use rustc_serialize::{Encodable, Encoder};
use script_layout_interface::restyle_damage::{REFLOW, REFLOW_OUT_OF_FLOW};
use std::cmp::max;
use std::fmt;
use std::iter::{Enumerate, IntoIterator, Peekable};
@ -106,73 +107,84 @@ impl TableRowFlow {
/// methods
#[inline(always)]
fn assign_block_size_table_row_base(&mut self, layout_context: &LayoutContext) {
// Per CSS 2.1 § 17.5.3, find max_y = max(computed `block-size`, minimum block-size of all
// cells).
let mut max_block_size = Au(0);
let thread_id = self.block_flow.base.thread_id;
for kid in self.block_flow.base.child_iter_mut() {
kid.place_float_if_applicable();
if !flow::base(kid).flags.is_float() {
kid.assign_block_size_for_inorder_child_if_necessary(layout_context, thread_id);
if self.block_flow.base.restyle_damage.contains(REFLOW) {
// Per CSS 2.1 § 17.5.3, find max_y = max(computed `block-size`, minimum block-size of
// all cells).
let mut max_block_size = Au(0);
let thread_id = self.block_flow.base.thread_id;
for kid in self.block_flow.base.child_iter_mut() {
kid.place_float_if_applicable();
if !flow::base(kid).flags.is_float() {
kid.assign_block_size_for_inorder_child_if_necessary(layout_context,
thread_id);
}
{
let child_fragment = kid.as_mut_table_cell().fragment();
// TODO: Percentage block-size
let child_specified_block_size =
MaybeAuto::from_style(child_fragment.style().content_block_size(),
Au(0)).specified_or_zero();
max_block_size =
max(max_block_size,
child_specified_block_size +
child_fragment.border_padding.block_start_end());
}
let child_node = flow::mut_base(kid);
child_node.position.start.b = Au(0);
max_block_size = max(max_block_size, child_node.position.size.block);
}
{
let child_fragment = kid.as_mut_table_cell().fragment();
// TODO: Percentage block-size
let child_specified_block_size =
MaybeAuto::from_style(child_fragment.style().content_block_size(),
Au(0)).specified_or_zero();
max_block_size =
max(max_block_size,
child_specified_block_size +
child_fragment.border_padding.block_start_end());
let mut block_size = max_block_size;
// TODO: Percentage block-size
block_size = match MaybeAuto::from_style(self.block_flow
.fragment
.style()
.content_block_size(),
Au(0)) {
MaybeAuto::Auto => block_size,
MaybeAuto::Specified(value) => max(value, block_size),
};
// Assign the block-size of own fragment
let mut position = self.block_flow.fragment.border_box;
position.size.block = block_size;
self.block_flow.fragment.border_box = position;
self.block_flow.base.position.size.block = block_size;
// Assign the block-size of kid fragments, which is the same value as own block-size.
for kid in self.block_flow.base.child_iter_mut() {
let child_table_cell = kid.as_mut_table_cell();
{
let kid_fragment = child_table_cell.mut_fragment();
let mut position = kid_fragment.border_box;
position.size.block = block_size;
kid_fragment.border_box = position;
}
// Assign the child's block size.
child_table_cell.block_flow.base.position.size.block = block_size;
// Now we know the cell height, vertical align the cell's children.
child_table_cell.valign_children();
// Write in the size of the relative containing block for children. (This
// information is also needed to handle RTL.)
child_table_cell.block_flow.base.early_absolute_position_info =
EarlyAbsolutePositionInfo {
relative_containing_block_size: self.block_flow
.fragment
.content_box()
.size,
relative_containing_block_mode: self.block_flow
.fragment
.style()
.writing_mode,
};
}
let child_node = flow::mut_base(kid);
child_node.position.start.b = Au(0);
max_block_size = max(max_block_size, child_node.position.size.block);
}
let mut block_size = max_block_size;
// TODO: Percentage block-size
block_size = match MaybeAuto::from_style(self.block_flow
.fragment
.style()
.content_block_size(),
Au(0)) {
MaybeAuto::Auto => block_size,
MaybeAuto::Specified(value) => max(value, block_size),
};
// Assign the block-size of own fragment
let mut position = self.block_flow.fragment.border_box;
position.size.block = block_size;
self.block_flow.fragment.border_box = position;
self.block_flow.base.position.size.block = block_size;
// Assign the block-size of kid fragments, which is the same value as own block-size.
for kid in self.block_flow.base.child_iter_mut() {
let child_table_cell = kid.as_mut_table_cell();
{
let kid_fragment = child_table_cell.mut_fragment();
let mut position = kid_fragment.border_box;
position.size.block = block_size;
kid_fragment.border_box = position;
}
// Assign the child's block size.
child_table_cell.block_flow.base.position.size.block = block_size;
// Now we know the cell height, vertical align the cell's children.
child_table_cell.valign_children();
// Write in the size of the relative containing block for children. (This information
// is also needed to handle RTL.)
child_table_cell.block_flow.base.early_absolute_position_info =
EarlyAbsolutePositionInfo {
relative_containing_block_size: self.block_flow.fragment.content_box().size,
relative_containing_block_mode: self.block_flow.fragment.style().writing_mode,
};
}
self.block_flow.base.restyle_damage.remove(REFLOW_OUT_OF_FLOW | REFLOW);
}
pub fn populate_collapsed_border_spacing<'a, I>(