import { ICanvas, ICorners, TextBaseline } from '../interfaces/canvas.interface';
import { FillStyle, IColorStep } from './fill-style';
import { StrokeStyle } from './stroke-style';
import { ICanvasPath } from '../interfaces/canvas-path.interface';
import { ShadowStyle } from './shadow-style';
import { CanvasFilter } from './canvas-filter';
import { CanvasFont } from './canvas-font';
export declare class Canvas implements ICanvas {
    protected pixelRatio: number;
    protected context: CanvasRenderingContext2D;
    private canvasNode;
    private canvasPath;
    private width;
    private height;
    private currentFilter?;
    private currentStrokeStyle?;
    private currentFillStyle?;
    private currentShadowStyle?;
    private currentFont?;
    private currentTextBaseline?;
    private currentOpacity?;
    constructor();
    getCurrentFilter(): Readonly<CanvasFilter> | undefined;
    getCurrentStrokeStyle(): Readonly<StrokeStyle> | undefined;
    getCurrentFillStyle(): Readonly<FillStyle> | undefined;
    getCurrentShadowStyle(): Readonly<ShadowStyle> | undefined;
    getCurrentFont(): Readonly<CanvasFont> | undefined;
    getCurrentTextBaseline(): TextBaseline | undefined;
    getCurrentOpacity(): number | undefined;
    toBase64(): string;
    toBlob(type: string, quality: number): Promise<Blob | null>;
    resizeCanvas(width: number, height: number): void;
    getDomNode(): HTMLCanvasElement;
    getWidth(): number;
    getHeight(): number;
    translate(x: number, y: number): void;
    scale(x: number, y: number): void;
    rotate(angle: number): void;
    saveState(): void;
    restoreState(): void;
    clear(): void;
    clearRect(x: number, y: number, width: number, height: number): void;
    setFilter(filter: CanvasFilter): void;
    removeFilter(): void;
    setLineDash(linePx: number, spacePx: number): void;
    setFillStyle(style: FillStyle): void;
    setStrokeStyle(style: StrokeStyle): void;
    setShadowStyle(style: ShadowStyle): void;
    setFont(font: CanvasFont): void;
    setTextBaseline(alignment: TextBaseline): void;
    setOpacity(value: number): void;
    setClipRegion(x: number, y: number, width: number, height: number): void;
    drawRect(x: number, y: number, width: number, height: number, fill?: boolean, stroke?: boolean): void;
    drawArc(x: number, y: number, radius: number, startAngle: number, endAngle: number): void;
    drawEllipse(x: number, y: number, radiusX: number, radiusY: number, rotation: number, startAngle: number, endAngle: number): void;
    drawRoundRect(x: number, y: number, width: number, height: number, radius: number | ICorners, fill: boolean, stroke: boolean): void;
    drawLine(x: number, y: number, x2: number, y2: number): void;
    measureText(text: string): TextMetrics;
    drawText(text: string, x: number, y: number, maxWidth?: number, fill?: boolean, stroke?: boolean): void;
    drawWrappedText(text: string, x: number, y: number, maxWidth: number, lineHeight: number, fill?: boolean, stroke?: boolean): void;
    drawImage(image: HTMLImageElement | HTMLCanvasElement | ImageBitmap | ICanvas, x: number, y: number, width?: number, height?: number): void;
    drawScaledImage(image: HTMLImageElement | HTMLCanvasElement | ImageBitmap | ICanvas, x: number, y: number, width: number, height: number, srcX: number, srcY: number, srcWidth: number, srcHeight: number): void;
    beginPath(): ICanvasPath;
    createLinearGradient(x1: number, y1: number, x2: number, y2: number, colorSteps: IColorStep[]): FillStyle;
    createRadialGradient(x1: number, y1: number, x2: number, y2: number, radiusX: number, radiusY: number, colorSteps: IColorStep[]): FillStyle;
    createPattern(image: HTMLImageElement | HTMLCanvasElement | HTMLVideoElement | ICanvas, repetitionStyle: 'repeat' | 'repeat-x' | 'repeat-y' | 'no-repeat'): FillStyle;
    /**
     * Helper methods
     */
    protected roundNumber(value: number, decimals: number): number;
}