import type { Rect } from './screenshot-editor-model.js';
import type { ArkmeDesktopScreenshotResult } from '../desktop-screenshot-contract.js';
export interface ScreenshotAskRequest {
    requestId: string;
    operationId: string;
    contentBase64: string;
    fileName: string;
}
export interface NativeScreenshotBridge {
    askDsh?(png: string): Promise<boolean>;
    askDshResult?(reply: {
        requestId: string;
        ok: boolean;
        error?: string;
    }): Promise<boolean>;
    onAskDsh?(listener: (request: ScreenshotAskRequest) => void): () => void;
    onAskDshCancel?(listener: (request: {
        requestId: string;
    }) => void): () => void;
    onAskDshActivate?(listener: (request: {
        requestId: string;
    }) => void): () => void;
    version: 1;
    capture(requestId: string): Promise<ArkmeDesktopScreenshotResult>;
    cancel(requestId: string): Promise<void>;
    context(): Promise<{
        contentBase64: string;
        width: number;
        height: number;
        windows?: Rect[];
        destination?: 'attachment' | 'clipboard';
    } | null>;
    ready(): Promise<boolean>;
    select(): Promise<boolean>;
    close(): Promise<void>;
    complete(png: string): Promise<boolean>;
    save(png: string): Promise<boolean>;
}
export declare function nativeScreenshotBridge(): NativeScreenshotBridge | undefined;
export declare function screenshotWindowRequested(): boolean;
export declare function captureNativeScreenshot(signal: AbortSignal): Promise<ArkmeDesktopScreenshotResult>;
export declare function screenshotBlobBase64(blob: Blob): Promise<string>;
/** Use Chromium's native decoder; the iterable mapping path costs a JS call per PNG byte. */
export declare function decodeScreenshotBase64(value: string): Uint8Array<ArrayBuffer>;
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