export declare class Font {
    fontFamily: string;
    fontSize: number;
    fontWeight: string;
    fontStyle: string;
    constructor(fontFamily?: string, fontSize?: number, fontWeight?: string, fontStyle?: string);
    hash(): string;
    setFont(c: CanvasRenderingContext2D): void;
}
export interface TextCacheEntry {
    x: number;
    y: number;
    x_offset: number;
    baseline_offset: number;
    bbox_width: number;
    bbox_height: number;
}
export declare class TextCache {
    entries: {
        [name: string]: TextCacheEntry;
    };
    current_x: number;
    current_y: number;
    current_height: number;
    width: number;
    height: number;
    scaling: number;
    canvas: HTMLCanvasElement;
    context: CanvasRenderingContext2D;
    updated: boolean;
    constructor(width?: number, height?: number, scaling?: number);
    addText(text: string, font: Font): {
        x: number;
        y: number;
        w: number;
        h: number;
        scaling: number;
        x_offset: number;
        baseline_offset: number;
    };
    _layout2TextRect(layout: TextCacheEntry): {
        x: number;
        y: number;
        w: number;
        h: number;
        scaling: number;
        x_offset: number;
        baseline_offset: number;
    };
    getTextRect(text: string, font: Font): {
        x: number;
        y: number;
        w: number;
        h: number;
        scaling: number;
        x_offset: number;
        baseline_offset: number;
    };
    clear(): void;
}