import { ChartOptions } from '../types';
import { HTMLEditor } from '../../../core/HTMLEditor.ts';
export declare abstract class BaseChartRenderer {
    protected editor: HTMLEditor;
    protected colors: string[];
    constructor(editor: HTMLEditor);
    abstract render(ctx: CanvasRenderingContext2D, data: any[], options: ChartOptions): void;
    protected colorWithOpacity(color: string | undefined, opacity: number): string;
    protected getDimensions(options: ChartOptions): {
        padding: number;
        width: number;
        height: number;
    };
    protected getCircleDimensions(options: ChartOptions): {
        centerX: number;
        centerY: number;
        radius: number;
    };
    protected drawNoDataMessage(ctx: CanvasRenderingContext2D, options: ChartOptions): void;
    protected drawGrid(ctx: CanvasRenderingContext2D, options: ChartOptions, maxValue: number, showXAxis?: boolean, xLabels?: string[], chartType?: string): void;
    protected drawLegend(ctx: CanvasRenderingContext2D, data: any[], options: ChartOptions): void;
    protected getColors(options: ChartOptions): string[];
    protected getTextColor(options: ChartOptions): string;
    protected getBackgroundColor(options: ChartOptions): string;
    protected getGridColor(options: ChartOptions): string;
    protected drawTitle(ctx: CanvasRenderingContext2D, options: ChartOptions): void;
    protected drawAxisLabels(ctx: CanvasRenderingContext2D, options: ChartOptions): void;
    protected drawBackground(ctx: CanvasRenderingContext2D, options: ChartOptions): void;
}