Module modifiers 

Composable drag constraints, applied as a chain to a proposed position.

Where crate::canvas bakes snap-and-clamp into one component, this module generalizes the idea (in the spirit of dnd-kit’s modifiers): each DragModifier is a pure Point → Point transform, and a chain feeds each output into the next.

use dioxus_dnd::core::{apply_modifiers, DragModifier, ModifierCtx, Point, Rect};

let ctx = ModifierCtx {
    container: Some(Rect::new(0.0, 0.0, 400.0, 300.0)),
    element: Some(Rect::new(0.0, 0.0, 40.0, 40.0)),
};
let chain = [
    DragModifier::LockAxis { horizontal: false, vertical: true },
    DragModifier::Snap { x: 8.0, y: 8.0 },
    DragModifier::KeepInside,
];
let p = apply_modifiers(&chain, Point::new(123.0, 999.0), &ctx);
assert_eq!((p.x, p.y), (0.0, 260.0));

Structs

ModifierCtx

Geometry a modifier may need. Fields it doesn’t need can stay None.

Enums

DragModifier

A single constraint on a proposed drag position.

Functions

apply_modifiers

Run a chain of modifiers in order over a proposed position.