Enum DropFeedback 

pub enum DropFeedback {
    InsertionLine {
        y: f32,
        width: f32,
    },
    HighlightRect {
        rect: Rect,
        color: Color,
    },
    Accept,
    NoFeedback,
}

A drop target’s response to a drag hovering over it.

The variant decides hover bubbling: a target that returns NoFeedback does not engage the payload, so the drag passes through to the next drop target up the tree. Any engaging variant (Accept, InsertionLine, HighlightRect) stops the bubble and settles the drop target for the rest of the drag.

On release, on_drop runs once on that settled target; its returned bool reports acceptance to the source via DropOutcome::InApp { accepted } — it does not re-bubble to another target when it returns false (the target was already chosen during the hover phase).

Variants

InsertionLine

A horizontal line at the given Y coordinate, spanning the given width. Used for insertion between list items. Engages the target.

Fields

y: f32

width: f32

HighlightRect

A highlighted rectangle. Used for container/folder drops. Engages the target.

Fields

rect: Rect

color: Color

Accept

Accepted, but the target draws its own visual (signal-driven, e.g. DropTarget’s is_targeted border) — the framework renders nothing extra. Engages the target (stops bubbling), distinct from NoFeedback.

NoFeedback

The payload is not accepted by this target — the drag bubbles to the next drop target up the tree (hover phase). The framework renders nothing.

Implementations

impl DropFeedback

pub fn is_engaged(&self) -> bool

Whether this response engages the payload (stops drop-target bubbling). Everything except NoFeedback engages.

Trait Implementations

impl Clone for DropFeedback

fn clone(&self) -> DropFeedback

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DropFeedback

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

Formats the value using the given formatter.