import { Point } from '../math/Point';
import Session from '../Session';
import Surface from '../Surface';
import View from '../View';
import { Scene } from './Scene';
export default class Renderer {
    readonly session: Session;
    scenes: {
        [key: string]: Scene;
    };
    topLevelViews: View[];
    private frameCallbacks;
    private viewStack;
    private renderFrame?;
    private renderTaskRegistration?;
    private constructor();
    static create(session: Session): Renderer;
    initScene(sceneId: string, canvas: HTMLCanvasElement): void;
    updateCursor(view: View, hotspot: Point): void;
    raiseSurface(surface: Surface): void;
    render(afterUpdatePixelContent?: () => void): void;
    pickView(scenePoint: Point): View | undefined;
    hideCursor(): void;
    resetCursor(): void;
    clearDndImage(): void;
    updateDndImage(view: View): void;
    removeTopLevelView(topLevelView: View): void;
    hasTopLevelView(topLevelView: View): boolean;
    addTopLevelView(topLevelView: View): void;
    /**
     * Update stack of all views of this scene, in-order from bottom to top.
     */
    private updateViewStack;
    private addToViewStack;
    private registerFrameCallbacks;
    private updateRenderStatesPixelContent;
}