mirror of
https://github.com/servo/servo.git
synced 2025-08-05 21:50:18 +01:00
layout: Make absolutely-positioned elements with z-index: auto
not
stacking contexts. Improves many sites. Closes #7069.
This commit is contained in:
parent
84c4a26e4d
commit
d3d59ced36
26 changed files with 58 additions and 80 deletions
|
@ -35,9 +35,9 @@ use std::fmt;
|
|||
use std::sync::{Arc, Mutex};
|
||||
use string_cache::Atom;
|
||||
use style::computed_values::content::ContentItem;
|
||||
use style::computed_values::{border_collapse, clear, mix_blend_mode, overflow_wrap, position};
|
||||
use style::computed_values::{text_align, text_decoration, white_space, word_break};
|
||||
use style::computed_values::transform_style;
|
||||
use style::computed_values::{border_collapse, clear, mix_blend_mode, overflow_wrap, overflow_x};
|
||||
use style::computed_values::{position, text_align, text_decoration, transform_style, white_space};
|
||||
use style::computed_values::{word_break, z_index};
|
||||
use style::properties::{self, ComputedValues, cascade_anonymous};
|
||||
use style::values::computed::{LengthOrPercentage, LengthOrPercentageOrAuto};
|
||||
use style::values::computed::{LengthOrPercentageOrNone};
|
||||
|
@ -2027,13 +2027,24 @@ impl Fragment {
|
|||
return true
|
||||
}
|
||||
|
||||
match self.style().get_box().position {
|
||||
position::T::absolute | position::T::fixed => {
|
||||
// FIXME(pcwalton): This should only establish a new stacking context when
|
||||
// `z-index` is not `auto`. But this matches what we did before.
|
||||
true
|
||||
}
|
||||
position::T::relative | position::T::static_ => {
|
||||
// FIXME(pcwalton): Don't unconditionally form stacking contexts for `overflow_x: scroll`
|
||||
// and `overflow_y: scroll`. This needs multiple layers per stacking context.
|
||||
match (self.style().get_box().position,
|
||||
self.style().get_box().z_index,
|
||||
self.style().get_box().overflow_x,
|
||||
self.style().get_box().overflow_y.0) {
|
||||
(position::T::absolute,
|
||||
z_index::T::Auto,
|
||||
overflow_x::T::visible,
|
||||
overflow_x::T::visible) |
|
||||
(position::T::fixed,
|
||||
z_index::T::Auto,
|
||||
overflow_x::T::visible,
|
||||
overflow_x::T::visible) => false,
|
||||
(position::T::absolute, _, _, _) |
|
||||
(position::T::fixed, _, _, _) => true,
|
||||
(position::T::relative, _, _, _) |
|
||||
(position::T::static_, _, _, _) => {
|
||||
// FIXME(pcwalton): `position: relative` establishes a new stacking context if
|
||||
// `z-index` is not `auto`. But this matches what we did before.
|
||||
false
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue