Struct layout_2020::FragmentTree

pub struct FragmentTree {
    pub(crate) root_fragments: Vec<ArcRefCell<Fragment>>,
    pub(crate) scrollable_overflow: PhysicalRect<Au>,
    pub(crate) initial_containing_block: PhysicalRect<Au>,
    pub(crate) canvas_background: CanvasBackground,
    pub root_scroll_sensitivity: ScrollSensitivity,
}

Fields

root_fragments: Vec<ArcRefCell<Fragment>>

Fragments at the top-level of the tree.

If the root element has display: none, there are zero fragments. Otherwise, there is at least one:

• The first fragment is generated by the root element.
• There may be additional fragments generated by positioned boxes that have the initial containing block.

scrollable_overflow: PhysicalRect<Au>

The scrollable overflow rectangle for the entire tree https://drafts.csswg.org/css-overflow/#scrollable

initial_containing_block: PhysicalRect<Au>

The containing block used in the layout of this fragment tree.

canvas_background: CanvasBackground

https://drafts.csswg.org/css-backgrounds/#special-backgrounds

root_scroll_sensitivity: ScrollSensitivity

Whether or not the root element is sensitive to scroll input events.

Implementations

impl FragmentTree

pub(crate) fn build_display_list( &self, builder: &mut DisplayListBuilder<'_>, root_stacking_context: &StackingContext, )

pub fn print(&self)

pub fn scrollable_overflow(&self) -> LayoutSize

pub(crate) fn find<T>( &self, process_func: impl FnMut(&Fragment, usize, &PhysicalRect<Au>) -> Option<T>, ) -> Option<T>

pub fn remove_nodes_in_fragment_tree_from_set( &self, set: &mut FxHashSet<AnimationSetKey>, )

pub fn get_content_boxes_for_node( &self, requested_node: OpaqueNode, ) -> Vec<Rect<Au>>

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_border_dimensions_for_node( &self, requested_node: OpaqueNode, ) -> Rect<i32>

pub fn get_scrolling_area_for_viewport(&self) -> PhysicalRect<Au>

pub fn get_scrolling_area_for_node( &self, requested_node: OpaqueNode, ) -> PhysicalRect<Au>

Trait Implementations

impl Serialize for FragmentTree

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.