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layout: Implement text-indent per CSS 2.1 § 16.1.

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I had to use a somewhat unconventional method of computing text
indentation (propagating from blocks down to inlines) because of the way
containing blocks are handled in Servo.

(As a side note, neither Gecko nor WebKit correctly handles percentages
in `text-align`, at least incrementally -- i.e. when the percentages are
relative to the viewport and the viewport is resized.)
This commit is contained in:
Patrick Walton 2014-12-10 23:17:05 -08:00
parent 071d320728
commit caee309ef4
11 changed files with 173 additions and 28 deletions
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7
components/layout/table_cell.rs
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@ -96,7 +96,7 @@ impl Flow for TableCellFlow {
/// Recursively (top-down) determines the actual inline-size of child contexts and fragments.
/// When called on this context, the context has had its inline-size set by the parent table
/// row.
fn assign_inline_sizes(&mut self, ctx: &LayoutContext) {
fn assign_inline_sizes(&mut self, layout_context: &LayoutContext) {
let _scope = layout_debug_scope!("table_cell::assign_inline_sizes {:x}",
self.block_flow.base.debug_id());
debug!("assign_inline_sizes({}): assigning inline_size for flow", "table_cell");
@ -107,7 +107,7 @@ impl Flow for TableCellFlow {
let inline_size_computer = InternalTable;
inline_size_computer.compute_used_inline_size(&mut self.block_flow,
ctx,
layout_context,
containing_block_inline_size);
let inline_start_content_edge =
@ -117,7 +117,8 @@ impl Flow for TableCellFlow {
let content_inline_size =
self.block_flow.fragment.border_box.size.inline - padding_and_borders;
self.block_flow.propagate_assigned_inline_size_to_children(inline_start_content_edge,
self.block_flow.propagate_assigned_inline_size_to_children(layout_context,
inline_start_content_edge,
content_inline_size,
None);
}