import { Event } from '@opensumi/ide-core-common';
import { Color } from './color';
import { ColorContribution, ColorDefaults, ColorFunction, ColorIdentifier, ColorValue, ITheme } from './theme.service';
export declare const Extensions: {
    ColorContribution: string;
};
export interface IColorRegistry {
    /**
     * Register a color to the registry.
     * @param id The color id as used in theme description files
     * @param defaults The default values
     * @description the description
     */
    registerColor(id: string, defaults: ColorDefaults, description: string): ColorIdentifier;
    /**
     * Register a color to the registry.
     */
    deregisterColor(id: string): void;
    /**
     * Get all color contributions
     */
    getColors(): ColorContribution[];
    /**
     * Get color contributions by id
     */
    getColor(id: string): ColorContribution;
    /**
     * Gets the default color of the given id
     */
    resolveDefaultColor(id: ColorIdentifier, theme: ITheme): Color | undefined;
    onDidColorChangedEvent: Event<void>;
}
export declare function getColorRegistry(): IColorRegistry;
export declare function registerColor(id: string, defaults: ColorDefaults | null, description: string, needsTransparency?: boolean, deprecationMessage?: string): ColorIdentifier;
export declare function darken(colorValue: ColorValue, factor: number): ColorFunction;
export declare function lighten(colorValue: ColorValue, factor: number): ColorFunction;
export declare function transparent(colorValue: ColorValue, factor: number): ColorFunction;
export declare function opaque(colorValue: ColorValue, background: ColorValue): ColorFunction;
export declare function oneOf(...colorValues: ColorValue[]): ColorFunction;
export declare function lessProminent(colorValue: ColorValue, backgroundColorValue: ColorValue, factor: number, transparency: number): ColorFunction;
/**
 * @param colorValue Resolve a color value in the context of a theme
 */
export declare function resolveColorValue(colorValue: ColorValue | null, theme: ITheme): Color | undefined;
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