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layout: Implement ordered lists, CSS counters, and quotes per CSS 2.1

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§ 12.3-12.5.

Only simple alphabetic and numeric counter styles are supported. (This
is most of them though.)

Although this PR adds a sequential pass to layout, I verified that on
pages that contain a reasonable number of ordered lists (Reddit
`/r/rust`), the time spent in generated content resolution is dwarfed by
the time spent in the parallelizable parts of layout. So I don't expect
this to negatively affect our parallelism expect perhaps in pathological
cases.
This commit is contained in:
Patrick Walton 2015-03-05 12:37:37 -08:00
parent 2df4dd9e09
commit f9cdd05d58
39 changed files with 1704 additions and 537 deletions
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45
components/layout/block.rs
View file

@ -27,7 +27,6 @@
#![deny(unsafe_blocks)]
use construct::FlowConstructor;
use context::LayoutContext;
use css::node_style::StyledNode;
use display_list_builder::{BlockFlowDisplayListBuilding, FragmentDisplayListBuilding};
@ -50,12 +49,8 @@ use wrapper::ThreadSafeLayoutNode;
use geom::{Point2D, Rect, Size2D};
use gfx::display_list::{ClippingRegion, DisplayList};
use rustc_serialize::{Encoder, Encodable};
use msg::compositor_msg::LayerId;
use msg::constellation_msg::ConstellationChan;
use util::geometry::{Au, MAX_AU};
use util::logical_geometry::{LogicalPoint, LogicalRect, LogicalSize, WritingMode};
use util::opts;
use rustc_serialize::{Encoder, Encodable};
use std::cmp::{max, min};
use std::fmt;
use style::computed_values::{overflow_x, overflow_y, position, box_sizing, display, float};
@ -63,6 +58,9 @@ use style::properties::ComputedValues;
use style::values::computed::{LengthOrPercentage, LengthOrPercentageOrAuto};
use style::values::computed::{LengthOrPercentageOrNone};
use std::sync::Arc;
use util::geometry::{Au, MAX_AU};
use util::logical_geometry::{LogicalPoint, LogicalRect, LogicalSize, WritingMode};
use util::opts;
/// Information specific to floated blocks.
#[derive(Clone, RustcEncodable)]
@ -570,20 +568,6 @@ impl Encodable for BlockFlowFlags {
}
impl BlockFlow {
pub fn from_node(constructor: &mut FlowConstructor, node: &ThreadSafeLayoutNode) -> BlockFlow {
let writing_mode = node.style().writing_mode;
BlockFlow {
base: BaseFlow::new(Some((*node).clone()), writing_mode, ForceNonfloatedFlag::ForceNonfloated),
fragment: Fragment::new(constructor, node),
static_b_offset: Au::new(0),
inline_size_of_preceding_left_floats: Au(0),
inline_size_of_preceding_right_floats: Au(0),
hypothetical_position: LogicalPoint::new(writing_mode, Au(0), Au(0)),
float: None,
flags: BlockFlowFlags::empty(),
}
}
pub fn from_node_and_fragment(node: &ThreadSafeLayoutNode, fragment: Fragment) -> BlockFlow {
let writing_mode = node.style().writing_mode;
BlockFlow {
@ -598,23 +582,6 @@ impl BlockFlow {
}
}
pub fn float_from_node(constructor: &mut FlowConstructor,
node: &ThreadSafeLayoutNode,
float_kind: FloatKind)
-> BlockFlow {
let writing_mode = node.style().writing_mode;
BlockFlow {
base: BaseFlow::new(Some((*node).clone()), writing_mode, ForceNonfloatedFlag::FloatIfNecessary),
fragment: Fragment::new(constructor, node),
static_b_offset: Au::new(0),
inline_size_of_preceding_left_floats: Au(0),
inline_size_of_preceding_right_floats: Au(0),
hypothetical_position: LogicalPoint::new(writing_mode, Au(0), Au(0)),
float: Some(box FloatedBlockInfo::new(float_kind)),
flags: BlockFlowFlags::empty(),
}
}
pub fn float_from_node_and_fragment(node: &ThreadSafeLayoutNode,
fragment: Fragment,
float_kind: FloatKind)
@ -1950,8 +1917,8 @@ impl Flow for BlockFlow {
.translate(stacking_context_position));
}
fn remove_compositor_layers(&self, constellation_chan: ConstellationChan) {
self.fragment.remove_compositor_layers(constellation_chan);
fn mutate_fragments(&mut self, mutator: &mut FnMut(&mut Fragment)) {
(*mutator)(&mut self.fragment)
}
}