import { DisplayObject } from '@antv/g';
export type LabelTransform = OverlapHideLabelTransform | OverlapDodgeYLabelTransform | ContrastReverseLabelTransform | OverflowHideLabelTransform;
export type OverlapHideLabelTransform = {
    type?: 'overlapHide';
    /**
     * The hide priority, is the comparator for label.sort().
     */
    priority?: (a: DisplayObject, b: DisplayObject) => number;
};
export type OverlapDodgeYLabelTransform = {
    type?: 'overlapDodgeY';
    maxIterations?: number;
    maxError?: number;
    padding?: number;
};
export type ContrastReverseLabelTransform = {
    type: 'contrastReverse';
    /**
     * Transform when the contrast ratio < threshold.
     * Default is `4.5`.
     */
    threshold?: number;
    /**
     * The optional color palette, default is [#000, #fff].
     */
    palette?: string[];
};
export type OverflowHideLabelTransform = {
    type: 'overflowHide';
};
export type ExceedAdjustLabel = {
    type: 'exceedAdjust';
};