layout: Add basic support for getClientRects() queries (#31696)

This adds basic support for `getClientRects()` by sharing code with the
implementation of `getBoundingClientRect()`. In addition to sharing
code, it also shares all of the bugs. Primarily, scrolilng positions are
not taken into account when return boundary rectangles.
This commit is contained in:
Martin Robinson 2024-03-15 18:20:47 +01:00 committed by GitHub
parent 3f3820b3dc
commit 47a4ce467f
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
15 changed files with 48 additions and 71 deletions

View file

@ -17,7 +17,7 @@ use super::{ContainingBlockManager, Fragment, Tag};
use crate::cell::ArcRefCell;
use crate::display_list::StackingContext;
use crate::flow::CanvasBackground;
use crate::geom::PhysicalRect;
use crate::geom::{physical_rect_to_au_rect, PhysicalRect};
#[derive(Serialize)]
pub struct FragmentTree {
@ -97,9 +97,13 @@ impl FragmentTree {
});
}
pub fn get_content_box_for_node(&self, requested_node: OpaqueNode) -> Option<Rect<Au>> {
let mut bounding_box = PhysicalRect::zero();
let mut found_any_nodes = false;
/// Get the vector of rectangles that surrounds the fragments of the node with the given address.
/// This function answers the `getClientRects()` query and the union of the rectangles answers
/// the `getBoundingClientRect()` query.
///
/// TODO: This function is supposed to handle scroll offsets, but that isn't happening at all.
pub fn get_content_boxes_for_node(&self, requested_node: OpaqueNode) -> Vec<Rect<Au>> {
let mut content_boxes = Vec::new();
let tag_to_find = Tag::new(requested_node);
self.find(|fragment, _, containing_block| {
if fragment.tag() != Some(tag_to_find) {
@ -121,27 +125,12 @@ impl FragmentTree {
Fragment::IFrame(_) => return None,
};
found_any_nodes = true;
bounding_box = fragment_relative_rect
.translate(containing_block.origin.to_vector())
.union(&bounding_box);
content_boxes.push(physical_rect_to_au_rect(
fragment_relative_rect.translate(containing_block.origin.to_vector()),
));
None::<()>
});
if found_any_nodes {
Some(Rect::new(
Point2D::new(
Au::from_f32_px(bounding_box.origin.x.px()),
Au::from_f32_px(bounding_box.origin.y.px()),
),
Size2D::new(
Au::from_f32_px(bounding_box.size.width.px()),
Au::from_f32_px(bounding_box.size.height.px()),
),
))
} else {
None
}
content_boxes
}
pub fn get_border_dimensions_for_node(&self, requested_node: OpaqueNode) -> Rect<i32> {

View file

@ -525,3 +525,17 @@ impl From<LogicalRect<CSSPixelLength>> for LogicalRect<Au> {
}
}
}
/// Convert a `PhysicalRect<Length>` (one that uses CSSPixel as the unit) to an untyped `Rect<Au>`.
pub fn physical_rect_to_au_rect(rect: PhysicalRect<Length>) -> euclid::default::Rect<Au> {
euclid::default::Rect::new(
euclid::default::Point2D::new(
Au::from_f32_px(rect.origin.x.px()),
Au::from_f32_px(rect.origin.y.px()),
),
euclid::default::Size2D::new(
Au::from_f32_px(rect.size.width.px()),
Au::from_f32_px(rect.size.height.px()),
),
)
}

View file

@ -179,11 +179,25 @@ pub fn process_content_box_request(
requested_node: OpaqueNode,
fragment_tree: Option<Arc<FragmentTree>>,
) -> Option<Rect<Au>> {
fragment_tree?.get_content_box_for_node(requested_node)
let rects = fragment_tree?.get_content_boxes_for_node(requested_node);
if rects.is_empty() {
return None;
}
Some(
rects
.iter()
.fold(Rect::zero(), |unioned_rect, rect| rect.union(&unioned_rect)),
)
}
pub fn process_content_boxes_request(_requested_node: OpaqueNode) -> Vec<Rect<Au>> {
vec![]
pub fn process_content_boxes_request(
requested_node: OpaqueNode,
fragment_tree: Option<Arc<FragmentTree>>,
) -> Vec<Rect<Au>> {
fragment_tree
.map(|tree| tree.get_content_boxes_for_node(requested_node))
.unwrap_or_default()
}
pub fn process_node_geometry_request(

View file

@ -857,7 +857,8 @@ impl LayoutThread {
process_content_box_request(node, self.fragment_tree.borrow().clone());
},
&QueryMsg::ContentBoxesQuery(node) => {
rw_data.content_boxes_response = process_content_boxes_request(node);
rw_data.content_boxes_response =
process_content_boxes_request(node, self.fragment_tree.borrow().clone());
},
&QueryMsg::TextIndexQuery(node, point_in_node) => {
let point_in_node = Point2D::new(

View file

@ -1,3 +0,0 @@
[cssom-getClientRects-002.html]
[CSSOM View - GetClientRects().length is the same regardless source new lines]
expected: FAIL

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@ -1,3 +0,0 @@
[getClientRects-br-htb-ltr.html]
[Position of the BR element]
expected: FAIL

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@ -1,4 +0,0 @@
[getClientRects-br-vlr-ltr.html]
[Position of the BR element]
expected: FAIL

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@ -1,10 +0,0 @@
[getClientRects-inline-atomic-child.html]
[getClientRects-inline-atomic-child]
expected: FAIL
[getClientRects-inline-atomic-child 2]
expected: FAIL
[getClientRects-inline-atomic-child 1]
expected: FAIL

View file

@ -1,2 +0,0 @@
[getClientRects-inline.html]
expected: FAIL

View file

@ -1,7 +1,4 @@
[getClientRects-zoom.html]
[getBoundingClientRect for elements with css zoom 1]
expected: FAIL
[getBoundingClientRect for elements with css zoom 2]
expected: FAIL

View file

@ -4,3 +4,6 @@
[Make sure the page is ready for animation.]
expected: FAIL
[Smooth scrolling while doing history navigation.]
expected: FAIL

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@ -1,9 +0,0 @@
[ttwf-js-cssomview-getclientrects-length.html]
[assert_length_of_getClientRects_from_Link]
expected: FAIL
[assert_length_of_getClientRects_from_Parent]
expected: FAIL
[assert_length_of_getClientRects_from_Button]
expected: FAIL

View file

@ -7,9 +7,3 @@
[DOMRectList item()]
expected: FAIL
[DOMRectList length]
expected: FAIL
[DOMRectList indexed getter]
expected: FAIL

View file

@ -88,6 +88,3 @@
[DOMMatrix clone: non-initial values (3d)]
expected: FAIL
[DOMRectList clone]
expected: FAIL

View file

@ -1,5 +1,4 @@
[canvas-descendants-focusability-003.tentative.html]
expected: ERROR
[<div tabindex="-1" data-focusable="false">]
expected: FAIL