/** size, really */
export interface Metrics {
    width: number;
    height: number;
}
export declare class Measurement {
    /** canvas used for color measurement */
    private static color_measurement_canvas;
    /**
     * node used for text metrics. this has to be added to
     * the DOM, so it's fixed and shifted off screen.
     */
    private static text_measurement_node;
    /** cache for color lookups */
    private static color_cache;
    static MeasureColorARGB(color: string): string;
    /**
     * measure a color. turns symbolic or rgb colors into rgb values.
     *
     * UPDATE: prefill with #fff. that prevents it from randomly returning
     * the last value, if the color doesn't work for some reason.
     */
    static MeasureColor(color: string): Uint8ClampedArray;
    static EnsureMeasurementNode(): void;
    /**
     * check if font is loaded, based on the theory that the alternatives
     * will be different sizes. note that this probably doesn't test weights
     * or italics properly, as those can be emulated without the specific face.
     *
     * I guess the thing to do in that case would be to load the alternate faces
     * first, and assume they are loaded serially (they're not).
     *
     * @param font_face
     * @param italic
     * @param bold
     */
    static FontLoaded(font_face: string, italic?: boolean, weight?: number): boolean;
    /**
     * measure width, height of text, accounting for rotation
     */
    static MeasureText(font: string, text: string, angle?: number): Metrics;
}