46 lines
1.8 KiB
TypeScript
46 lines
1.8 KiB
TypeScript
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import type { ChartMeta, PointElement } from '../types/index.js';
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export declare function fontString(pixelSize: number, fontStyle: string, fontFamily: string): string;
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/**
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* Request animation polyfill
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*/
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export declare const requestAnimFrame: (((callback: FrameRequestCallback) => number) & typeof requestAnimationFrame) | ((callback: any) => any);
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/**
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* Throttles calling `fn` once per animation frame
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* Latest arguments are used on the actual call
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*/
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export declare function throttled<TArgs extends Array<any>>(fn: (...args: TArgs) => void, thisArg: any): (...args: TArgs) => void;
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/**
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* Debounces calling `fn` for `delay` ms
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*/
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export declare function debounce<TArgs extends Array<any>>(fn: (...args: TArgs) => void, delay: number): (...args: TArgs) => number;
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/**
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* Converts 'start' to 'left', 'end' to 'right' and others to 'center'
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* @private
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*/
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export declare const _toLeftRightCenter: (align: 'start' | 'end' | 'center') => "center" | "left" | "right";
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/**
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* Returns `start`, `end` or `(start + end) / 2` depending on `align`. Defaults to `center`
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* @private
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*/
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export declare const _alignStartEnd: (align: 'start' | 'end' | 'center', start: number, end: number) => number;
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/**
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* Returns `left`, `right` or `(left + right) / 2` depending on `align`. Defaults to `left`
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* @private
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*/
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export declare const _textX: (align: 'left' | 'right' | 'center', left: number, right: number, rtl: boolean) => number;
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/**
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* Return start and count of visible points.
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* @private
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*/
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export declare function _getStartAndCountOfVisiblePoints(meta: ChartMeta<'line' | 'scatter'>, points: PointElement[], animationsDisabled: boolean): {
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start: number;
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count: number;
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};
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/**
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* Checks if the scale ranges have changed.
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* @param {object} meta - dataset meta.
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* @returns {boolean}
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* @private
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*/
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export declare function _scaleRangesChanged(meta: any): boolean;
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