import { Target } from '@diez/engine';
import { Color } from './color';
import { Font } from './font';
/**
 * An enumeration of the supported iOS `UIFont.TextStyle`s.
 */
export declare const enum IOSTextStyle {
    Body = "body",
    Callout = "callout",
    Caption1 = "caption1",
    Caption2 = "caption2",
    Footnote = "footnote",
    Headline = "headline",
    Subheadline = "subheadline",
    LargeTitle = "largeTitle",
    Title1 = "title1",
    Title2 = "title2",
    Title3 = "title3"
}
/**
 * An enumeration of text alignment types.
 */
export declare const enum TextAlignment {
    /**
     * Aligns according to the system's default for the current language.
     */
    Natural = "natural",
    Left = "left",
    Right = "right",
    Center = "center"
}
/**
 * An enumerated list of text decorations.
 */
export declare const enum TextDecoration {
    Underline = "underline",
    Strikethrough = "strikethrough"
}
/**
 * Typograph data.
 */
export interface TypographData {
    /**
     * The `Font` of the `Typograph`.
     */
    font: Font;
    /**
     * Negative values will be sanatized to `0`.
     */
    fontSize: number;
    /**
     * The `Color` of the `Typograph`.
     */
    color: Color;
    /**
     * The iOS `UIFont.TextStyle` of the `Typograph` (iOS only).
     */
    iosTextStyle: IOSTextStyle;
    /**
     * Indicates whether the `Typograph` should scale with the system's accessibility settings (iOS and Android only).
     */
    shouldScale: boolean;
    /**
     * The desired line height in density independent pixels.
     *
     * A value of `-1` will be treated as if the value is not set.
     *
     * Negative values (other than `-1`) will be sanatized to `0`.
     *
     * This value will be scaled according to `shouldScale`.
     *
     * TODO: Use optionality on `lineHeight` instead when it is supported by the compiler.
     */
    lineHeight: number;
    /**
     * The amount to increase/decrease the spacing between letters in density independent pixels.
     *
     * This value will be scaled according to `shouldScale`.
     */
    letterSpacing: number;
    /**
     * The alignment of the text.
     */
    alignment: TextAlignment;
    /**
     * A list of `TextDecoration`s to apply to the `Typograph`.
     */
    decoration: TextDecoration[];
}
declare const Typograph_base: new (overrides?: Partial<TypographData> | undefined) => import("@diez/engine").Prefab<TypographData> & TypographData;
/**
 * Describes a typograph including specification of a font name (understood to specify both a font face and a font
 * weight) as well as a font size in device-local units and a font color.
 *
 * @noinheritdoc
 */
export declare class Typograph extends Typograph_base {
    defaults: {
        font: Font;
        fontSize: number;
        color: Color;
        iosTextStyle: IOSTextStyle;
        shouldScale: boolean;
        lineHeight: number;
        letterSpacing: number;
        alignment: TextAlignment;
        decoration: never[];
    };
    options: {
        iosTextStyle: {
            targets: Target[];
        };
        shouldScale: {
            targets: Target[];
        };
    };
    constructor(overrides?: Partial<TypographData>);
    sanitize(data: TypographData): TypographData;
}
export {};
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