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layout: Implement border-spacing per CSS 2.1 § 17.6.1 and the legacy

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`cellspacing` attribute per HTML5 § 14.3.9.

Table layout code has been refactored to push the spacing down to
rowgroups and rows; this will aid the implementation of
`border-collapse` as well.

This commit also fixes two nasty issues in table layout:

* In fixed layout, extra space would not be divided among columns that
  had auto width but had nonzero minimum width.

* In automatic layout, extra space would be distributed to constrained
  columns as well even if unconstrained columns with percentage equal to
  zero were present.
This commit is contained in:
Patrick Walton 2014-12-17 16:44:37 -08:00
parent e8f1a046c6
commit 586c12ccc4
26 changed files with 690 additions and 208 deletions
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10
components/script/dom/element.rs
View file

@ -317,6 +317,16 @@ impl RawLayoutElementHelpers for Element {
None
}
}
UnsignedIntegerAttribute::CellSpacing => {
if self.is_htmltableelement() {
let this: &HTMLTableElement = mem::transmute(self);
this.get_cellspacing()
} else {
// Don't panic since `display` can cause this to be called on arbitrary
// elements.
None
}
}
UnsignedIntegerAttribute::ColSpan => {
if self.is_htmltablecellelement() {
let this: &HTMLTableCellElement = mem::transmute(self);