Struct UiTarget 

#[non_exhaustive]
pub struct UiTarget {
    pub key: String,
    pub node_id: String,
    pub rect: Rect,
    pub tooltip: Option<String>,
    pub scroll_offset_y: f32,
}

Hit-test target metadata. key is the author-facing route, while node_id is the stable laid-out tree path used by artifacts.

tooltip snapshots the node’s tooltip text at the moment the target was constructed, so the tooltip pass doesn’t have to walk the live tree to resolve it. This is what makes tooltips work on virtual-list rows: hit-testing reads last_tree (where the row has been realized), and the cached text survives into the next frame’s synthesize_tooltip even though that frame’s tree hasn’t rebuilt its virtual-list children yet.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

key: String

node_id: String

rect: Rect

tooltip: Option<String>

scroll_offset_y: f32

Scroll offset of the deepest scroll subtree inside this hit target, in logical pixels. 0.0 for widgets that don’t contain a scroll. Used by widgets like crate::widgets::text_area to convert a pointer in viewport space (what the user clicks) into content space (what cosmic-text’s hit_byte and caret_xy work in) — without this, clicks after scrolling land on the wrong line because the content has been shifted up by scroll_offset_y while the outer’s rect hasn’t moved.

Trait Implementations

impl Clone for UiTarget

fn clone(&self) -> UiTarget

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for UiTarget

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

Formats the value using the given formatter.

impl PartialEq for UiTarget

fn eq(&self, other: &UiTarget) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for UiTarget