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layout: Implement most of border-collapse per CSS 2.1 § 17.6.2.

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Known issues:

* Collapsed borders do not correctly affect the border-box of the table
  itself.

* The content widths of all cells in a column and the content height of
  all cells in a row is the same in this patch, but not in Gecko and
  WebKit.

* Corners are not painted well. The spec does not say what to do here.

* Column spans are not handled well. The spec does not say what to do
  here either.
This commit is contained in:
Patrick Walton 2015-03-09 12:33:04 -07:00 • committed by Simon Sapin
parent 92359c7b9a
commit 48299a53cb
22 changed files with 1975 additions and 520 deletions
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12
components/layout/flow.rs
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@ -48,14 +48,12 @@ use wrapper::ThreadSafeLayoutNode;
use geom::{Point2D, Rect, Size2D};
use gfx::display_list::ClippingRegion;
use rustc_serialize::{Encoder, Encodable};
use msg::constellation_msg::ConstellationChan;
use msg::compositor_msg::LayerId;
use util::geometry::{Au, ZERO_RECT};
use util::logical_geometry::{LogicalRect, LogicalSize, WritingMode};
use std::mem;
use msg::constellation_msg::ConstellationChan;
use rustc_serialize::{Encoder, Encodable};
use std::fmt;
use std::iter::Zip;
use std::mem;
use std::num::FromPrimitive;
use std::raw;
use std::slice::IterMut;
@ -64,6 +62,8 @@ use std::sync::atomic::{AtomicUsize, Ordering};
use style::computed_values::{clear, empty_cells, float, position, text_align};
use style::properties::ComputedValues;
use style::values::computed::LengthOrPercentageOrAuto;
use util::geometry::{Au, ZERO_RECT};
use util::logical_geometry::{LogicalRect, LogicalSize, WritingMode};
/// Virtual methods that make up a float context.
///
@ -358,7 +358,7 @@ pub fn child_iter<'a>(flow: &'a mut Flow) -> MutFlowListIterator<'a> {
pub trait ImmutableFlowUtils {
// Convenience functions
/// Returns true if this flow is a block or a float flow.
/// Returns true if this flow is a block flow or subclass thereof.
fn is_block_like(self) -> bool;
/// Returns true if this flow is a table flow.