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Use empty pseudo to cascade only inheritable properties for text

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Since for nested inline elements non-inheritable properties are
properly stored in the inline context of an inline fragment, so get
rid of them on the style.
This commit is contained in:
Pu Xingyu 2017-03-23 21:03:41 +08:00
parent 1677d479f6
commit 951c050690
8 changed files with 84 additions and 191 deletions
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49
components/layout/fragment.rs
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@ -1173,14 +1173,13 @@ impl Fragment {
_ => self.style().logical_border_width(),
};
match self.inline_context {
None => style_border_width,
// NOTE: We can have nodes with different writing mode inside
// the inline fragment context, so we need to overwrite the
// writing mode to compute the child logical sizes.
let writing_mode = self.style.writing_mode;
let context_border = match self.inline_context {
None => LogicalMargin::zero(writing_mode),
Some(ref inline_fragment_context) => {
// NOTE: We can have nodes with different writing mode inside
// the inline fragment context, so we need to overwrite the
// writing mode to compute the child logical sizes.
let writing_mode = self.style.writing_mode;
inline_fragment_context.nodes.iter().fold(style_border_width, |accumulator, node| {
let mut this_border_width =
node.style.border_width_for_writing_mode(writing_mode);
@ -1193,7 +1192,8 @@ impl Fragment {
accumulator + this_border_width
})
}
}
};
style_border_width + context_border
}
/// Returns the border width in given direction if this fragment has property
@ -1216,32 +1216,13 @@ impl Fragment {
/// Do not use this method if the inline direction margins are to be computed some other way
/// (for example, via constraint solving for blocks).
pub fn compute_inline_direction_margins(&mut self, containing_block_inline_size: Au) {
match self.specific {
SpecificFragmentInfo::Table |
SpecificFragmentInfo::TableCell |
SpecificFragmentInfo::TableRow |
SpecificFragmentInfo::TableColumn(_) |
SpecificFragmentInfo::InlineAbsoluteHypothetical(_) => {
self.margin.inline_start = Au(0);
self.margin.inline_end = Au(0);
return
}
SpecificFragmentInfo::InlineBlock(_) => {
// Inline-blocks do not take self margins into account but do account for margins
// from outer inline contexts.
self.margin.inline_start = Au(0);
self.margin.inline_end = Au(0);
}
_ => {
let margin = self.style().logical_margin();
self.margin.inline_start =
MaybeAuto::from_style(margin.inline_start,
containing_block_inline_size).specified_or_zero();
self.margin.inline_end =
MaybeAuto::from_style(margin.inline_end,
containing_block_inline_size).specified_or_zero();
}
}
let margin = self.style().logical_margin();
self.margin.inline_start =
MaybeAuto::from_style(margin.inline_start,
containing_block_inline_size).specified_or_zero();
self.margin.inline_end =
MaybeAuto::from_style(margin.inline_end,
containing_block_inline_size).specified_or_zero();
if let Some(ref inline_context) = self.inline_context {
for node in &inline_context.nodes {