@daks.dev/svelte.sdk/dist/utils/Wheel.js

DAKS.DEV Svelte SDK

class Wheel {
    static DELAY = 200;
    destroy;
    callback;
    constructor(el, cb) {
        el.addEventListener('wheel', this.handle);
        this.destroy = () => {
            el.removeEventListener('wheel', this.handle, true);
            clearTimeout(this.timeout);
        };
        this.callback = cb;
    }
    timeout;
    delta = {
        x: 0,
        y: 0,
        z: 0
    };
    handle = (ev) => {
        ev.preventDefault();
        ev.stopPropagation();
        if (this.timeout) {
            this.delta.x += ev.deltaX;
            this.delta.y += ev.deltaY;
            this.delta.z += ev.deltaZ;
            clearTimeout(this.timeout);
        }
        else {
            this.delta = {
                x: ev.deltaX,
                y: ev.deltaY,
                z: ev.deltaZ
            };
        }
        this.timeout = setTimeout(this.execute, Wheel.DELAY);
        //return false;
    };
    execute = () => {
        this.timeout = undefined;
        this.callback(this.delta);
    };
}
function wheel(node, cb) {
    const action = cb ? new Wheel(node, cb) : { destroy: () => null };
    return {
        destroy() {
            action.destroy();
        }
    };
}
export { wheel };
export default Wheel;