/**
 * Properties describing how a piece of text is formatted.
 * @internal
 */
export type Font = {
    fontStyle?: string;
    fontWeight?: string;
    fontSize: string;
    fontFamily: string;
};
/**
 * The Unicode character representing an ellipsis.
 * @internal
 */
export declare const ELLIPSIS_CHARACTER = "\u2026";
/**
 * Max iterations for finding the perfect truncated text for a given width
 * @internal
 */
export declare const ELLIPSIS_APPROXIMATION_THRESHOLD = 15;
/**
 * Calculates the width of formatted text in pixels.
 *
 * @param text - The text to calculate the width of
 * @param textFont - The font settings for the text
 * @internal
 */
export declare function getTextWidth(text: string, textFont: Font): number;
/**
 * Calculates the height of formatted text in pixels.
 * @param text - The text to calculate the height of
 * @param textFont - The font settings for the text
 * @internal
 */
export declare function getTextHeight(text: string, textFont: Font): number;
/**
 * Cuts off text that exceeds the maximum width in the center and
 * concatenates both shortened ends of the text with an ellipsis.
 *
 * @param originalText - The text to be truncated if its width exceeds <code>maxWidthInPx</code>
 * @param textFont - Different font settings to be considered when determining the width of the text
 * @param maxWidthInPx - If the text's width exceeds this value, the text will be truncated to a string whose width is guaranteed to be below it
 * @internal
 */
export declare function centerEllipsizeText(originalText: string, textFont: Font, maxWidthInPx: number): string;
/**
 * Returns an object containing the width of a given formatted text and the
 * width of an ellipsis character with the same text format or `null`
 * if the text width does not exceed its maximum available width.
 * @internal
 */
export declare function calculateEllipsisInfo(originalText: string, textFont: Font, maxWidthInPx: number): {
    ellipsisWidth: number;
    avgLetterWidth: number;
} | null;