import { CanvasSize, ReadingViewCommand, ReadingViewState } from 'pptx-viewer-shared';
/** Breathing room between the slide and the window edge, in CSS pixels. */
export declare const READING_VIEW_PADDING = 24;
export interface ReadingViewSessionInput {
    /** Slide the editor was on when the view was opened. */
    initialSlideIndex: number;
    getSlideCount: () => number;
    getCanvasSize: () => CanvasSize;
    /** Called with the slide the reader ended on, so the editor lands there. */
    onExit: (slideIndex: number) => void;
}
export declare class ReadingViewSession {
    #private;
    /** Viewport box the SFC binds to; 0 until the first layout pass. */
    viewportWidth: number;
    viewportHeight: number;
    state: ReadingViewState;
    constructor(input: ReadingViewSessionInput);
    /** Fit scale for the slide; 0 before the first layout pass. */
    get scale(): number;
    get canPrevious(): boolean;
    get canNext(): boolean;
    /** The "3 / 12" nav-bar counter. */
    get counter(): string;
    run(command: ReadingViewCommand): void;
    /**
     * Handle one key press. Must be installed in the CAPTURE phase: the editor
     * is still mounted under the overlay and listens for its own shortcuts on
     * `window`, so without swallowing the key first an arrow would turn the page
     * AND nudge the selected shape, and a bare Delete would destroy a shape the
     * reader cannot see.
     */
    handleKey(event: KeyboardEvent): void;
}
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