import { CSSProperties } from 'react';
export declare const penCache: {
    viewRect: {
        [id: string]: {
            width: number;
            height: number;
            left: number;
            top: number;
            right: number;
            bottom: number;
        } | null;
    };
    textLines: {
        [id: string]: Array<{
            text: string;
            x: number;
            y: number;
            measuredWith: number;
            textDecoration?: {
                moveTo: number[];
                lineTo: number[];
            };
        }> | null;
    };
};
export declare const clearPenCache: (id?: string) => void;
export interface IView {
    type: 'rect' | 'text' | 'image' | 'qrcode' | 'inlineText';
    text?: string;
    url?: string;
    id?: string;
    textList: Array<{
        text: string;
        css: CSSProperties & Partial<{
            align: string;
            verticalAlign: string;
            mode: 'aspectFill' | 'scaleToFill' | 'auto';
            textStyle: 'normal' | 'stroke';
            scalable: boolean;
            deletable: boolean;
        }>;
    }>;
    content?: string;
    css: CSSProperties & Partial<{
        align: string;
        verticalAlign: string;
        mode: 'aspectFill' | 'scaleToFill' | 'auto';
        textStyle: 'normal' | 'stroke';
        scalable: boolean;
        deletable: boolean;
    }>;
}
export interface IPalette {
    background: string;
    width: string;
    height: string;
    borderRadius: string;
    views: Array<IView>;
}
declare type InnerView = IView & Partial<{
    sWidth: number;
    sHeight: number;
    rect: Partial<{
        left: number;
        top: number;
        right: number;
        bottom: number;
        x: number;
        y: number;
        minWidth: number;
        startX: number;
        startY: number;
        endX: number;
        endY: number;
    }>;
}>;
export declare class Pen {
    private ctx;
    private data;
    style: {
        width: number;
        height: number;
    };
    constructor(ctx: CanvasRenderingContext2D, data: IPalette);
    paint(callback?: () => void): Promise<void>;
    _background(): Promise<void>;
    _drawAbsolute(view: InnerView): Promise<void>;
    _border({ borderRadius, width, height, borderWidth, borderStyle, }: {
        borderRadius?: string | number;
        width: number;
        height: number;
        borderWidth?: string | number;
        borderStyle?: string;
    }): void;
    _doClip(borderRadius: string | number, width: number, height: number, borderStyle?: string): void;
    _doBorder(view: IView, width: number, height: number): void;
    _preProcess(view: InnerView, notClip?: Boolean): {
        width: number;
        height: any;
        x: any;
        y: any;
        extra: any;
    };
    _doPaddings(view: IView): number[];
    _doBackground(view: IView): void;
    _drawQRCode(view: IView): void;
    _drawAbsImage(view: InnerView): Promise<void>;
    _fillAbsText(view: InnerView): void;
    _fillAbsInlineText(view: any): void;
    _drawAbsRect(view: InnerView): void;
    _doShadow(view: InnerView): void;
    _getAngle(angle: string): number;
}
export {};