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Fix table vertical alignment (middle, bottom, not yet baseline) with differing height cells

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Includes reftest for this behaviour
Patch fixes margin-collapse-clear-002,3,8,9
This commit is contained in:
Adam Casey 2016-07-23 01:07:16 +01:00
parent 2de3b119a9
commit b1debc40be
9 changed files with 102 additions and 12 deletions
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7
components/layout/table_cell.rs
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@ -80,6 +80,10 @@ impl TableCellFlow {
if !flow::base(self).restyle_damage.contains(REFLOW) {
return;
}
}
/// Position this cell's children according to vertical-align.
pub fn valign_children(&mut self) {
// Note to the reader: this code has been tested with negative margins.
// We end up with a "end" that's before the "start," but the math still works out.
let first_start = flow::base(self).children.front().map(|kid| {
@ -106,6 +110,9 @@ impl TableCellFlow {
let self_size = flow::base(self).position.size.block -
self.block_flow.fragment.border_padding.block_start_end();
let kids_self_gap = self_size - kids_size;
// This offset should also account for vertical_align::T::baseline.
// Need max cell ascent from the first row of this cell.
let offset = match self.block_flow.fragment.style().get_box().vertical_align {
vertical_align::T::middle => kids_self_gap / 2,
vertical_align::T::bottom => kids_self_gap,