import { BaseProcessor, ProcessorOptions, ExtractStringsResult, TranslatedString, SourceString } from '../core/baseProcessor';
import { AACTree } from '../core/treeStructure';
import { ProcessorInput } from '../utils/io';
export declare function normalizeHexColor(hexColor: string): string | null;
export declare function adjustHexColor(hexColor: string, amount: number): string;
export declare function getHighContrastNeutralColor(backgroundColor: string): string;
/**
 * Calculate relative luminance of a color using WCAG formula
 * @param hexColor - Hex color string (e.g., "#1d90ff")
 * @returns Relative luminance value between 0 and 1
 */
export declare function calculateLuminance(hexColor: string): number;
/**
 * Choose white or black text color based on background luminance for optimal contrast
 * @param backgroundColor - Background color hex string
 * @returns "#FFFFFF" for dark backgrounds, "#000000" for light backgrounds
 */
export declare function getContrastingTextColor(backgroundColor: string): string;
declare class AstericsGridProcessor extends BaseProcessor {
    readonly capabilities: {
        wordList: "none";
        preservesAssetsOnSave: boolean;
        newCellCreation: "allowed";
    };
    private loadAudio;
    constructor(options?: ProcessorOptions & {
        loadAudio?: boolean;
    });
    extractTexts(filePathOrBuffer: ProcessorInput): Promise<string[]>;
    private extractRawTexts;
    private extractActionTexts;
    loadIntoTree(filePathOrBuffer: ProcessorInput): Promise<AACTree>;
    private getLocalizedLabel;
    private getLocalizedText;
    private createButtonFromElement;
    processTexts(filePathOrBuffer: ProcessorInput, translations: Map<string, string>, outputPath: string): Promise<Uint8Array>;
    private applyTranslationsToGridFile;
    private applyTranslationsToAction;
    saveFromTree(tree: AACTree, outputPath: string): Promise<void>;
    /**
     * Add audio recording to a specific grid element
     */
    addAudioToElement(filePath: string, elementId: string, audioData: Buffer, metadata?: string): Promise<void>;
    /**
     * Create a copy of the grid file with audio recordings added
     */
    createAudioEnhancedGridFile(sourceFilePath: string, targetFilePath: string, audioMappings: Map<string, {
        audioData: Buffer;
        metadata?: string;
    }>): Promise<void>;
    /**
     * Extract all element IDs from the grid file for audio mapping
     */
    getElementIds(filePathOrBuffer: ProcessorInput): Promise<string[]>;
    /**
     * Check if an element has audio recording
     */
    hasAudioRecording(filePathOrBuffer: ProcessorInput, elementId: string): Promise<boolean>;
    /**
     * Extract strings with metadata for aac-tools-platform compatibility
     * Uses the generic implementation from BaseProcessor
     */
    extractStringsWithMetadata(filePath: string): Promise<ExtractStringsResult>;
    /**
     * Generate translated download for aac-tools-platform compatibility
     * Uses the generic implementation from BaseProcessor
     */
    generateTranslatedDownload(filePath: string, translatedStrings: TranslatedString[], sourceStrings: SourceString[]): Promise<string>;
}
export { AstericsGridProcessor };