import { IRenderer, LayerHook, RenderFrameState } from '../../interfaces/i-renderer';
import { BubbleState } from '../../models/internal/bubble-state';
import { Configuration, RenderLayer } from '../../models/public/configuration';
export declare class CanvasRenderer implements IRenderer {
    private readonly config;
    private canvas;
    private ctx;
    private dpr;
    private measurer;
    private container;
    private readonly hooksByLayer;
    constructor(config: Configuration);
    mount(container: HTMLElement): void;
    renderFrame(bubbles: ReadonlyArray<BubbleState>, state: RenderFrameState): void;
    renderLayer(layer: RenderLayer, bubbles: ReadonlyArray<BubbleState>, state: RenderFrameState): void;
    addLayerHook(hook: Omit<LayerHook, 'id'>): string;
    removeLayerHook(id: string): void;
    getLayerHooks(layer?: RenderLayer): ReadonlyArray<LayerHook>;
    resize(width: number, height: number): void;
    dispose(): void;
    get logicalWidth(): number;
    get logicalHeight(): number;
    get currentDpr(): number;
    /** Internal registration — bypasses the public guard, assigns "builtin:" prefix IDs. */
    private registerBuiltinHook;
    private insertHook;
    private drawBackground;
    private drawShadows;
    private drawBubbles;
    private drawText;
    private drawDebug;
    private lightenColor;
    private darkenColor;
    private shiftColor;
}