Struct UiDescription

pub struct UiDescription {
    pub dom_id: DomId,
    pub html_tree: NodeDataContainer<HtmlCascadeInfo>,
    pub ui_descr_root: NodeId,
    pub styled_nodes: NodeDataContainer<StyledNode>,
    pub dynamic_css_overrides: BTreeMap<NodeId, FastHashMap<DomString, CssProperty>>,
    pub selected_hover_nodes: BTreeMap<NodeId, HoverGroup>,
}

Fields

dom_id: DomId

DOM ID of this arena (so that multiple DOMs / IFrames can be displayed in one window)

html_tree: NodeDataContainer<HtmlCascadeInfo>

Data necessary for matching nodes properly (necessary to resolve CSS paths in callbacks)

ui_descr_root: NodeId

ID of the root node of the arena (usually NodeId(0))

styled_nodes: NodeDataContainer<StyledNode>

This field is created from the Css

dynamic_css_overrides: BTreeMap<NodeId, FastHashMap<DomString, CssProperty>>

The style properties that should be overridden for this frame, cloned from the Css

selected_hover_nodes: BTreeMap<NodeId, HoverGroup>

In order to hit-test :hover and :active selectors, need to insert tags for all rectangles that have a non-:hover path, for example if we have #thing:hover, then all nodes selected by #thing need to get a TagId, otherwise, they can’t be hit-tested.

Implementations

impl UiDescription

pub fn new( ui_state: &mut UiState, style: &Css, focused_node: &Option<(DomId, NodeId)>, hovered_nodes: &BTreeMap<NodeId, HitTestItem>, is_mouse_down: bool, ) -> Self

Applies the styles to the nodes calculated from the layout_screen function and calculates the final display list that is submitted to the renderer.

Trait Implementations

impl Debug for UiDescription

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.