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layout_2020: Add initial support for getComputedStyle

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This implementation is more-or-less on par with the one from layout_2013
and in some cases better. There are still some cases where we don't
return the correct "resolved value," but this is enough to test
animations and transitions.
This commit is contained in:
Martin Robinson 2020-05-09 10:59:55 +02:00
parent 4d541e8e38
commit 9c7b1ae715
188 changed files with 16312 additions and 15198 deletions
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14
components/layout_2020/flow/root.rs
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@ -237,7 +237,7 @@ impl FragmentTreeRoot {
))
}
fn find<T>(
pub(crate) fn find<T>(
&self,
mut process_func: impl FnMut(&Fragment, &PhysicalRect<Length>) -> Option<T>,
) -> Option<T> {
@ -251,16 +251,18 @@ impl FragmentTreeRoot {
pub fn get_content_box_for_node(&self, requested_node: OpaqueNode) -> Rect<Au> {
let mut bounding_box = PhysicalRect::zero();
self.find(|fragment, containing_block| {
if fragment.tag() != Some(requested_node) {
return None::<()>;
}
let fragment_relative_rect = match fragment {
Fragment::Box(fragment) if fragment.tag == requested_node => fragment
Fragment::Box(fragment) => fragment
.border_rect()
.to_physical(fragment.style.writing_mode, &containing_block),
Fragment::AbsoluteOrFixedPositioned(_) => PhysicalRect::zero(),
Fragment::Text(fragment) if fragment.tag == requested_node => fragment
Fragment::Text(fragment) => fragment
.rect
.to_physical(fragment.parent_style.writing_mode, &containing_block),
Fragment::Box(_) |
Fragment::Text(_) |
Fragment::AbsoluteOrFixedPositioned(_) |
Fragment::Image(_) |
Fragment::Anonymous(_) => return None,
};