import { CanvasSize } from 'pptx-viewer-shared';
/** Pull-based dependencies for {@link LayoutState}; read fresh on every access. */
export interface LayoutStateDeps {
    getCanvasSize(): CanvasSize;
    isFullscreen(): boolean;
    /** Manual zoom percent, or `null` for fit-to-viewport. */
    getZoomPercent(): number | null;
}
/**
 * LayoutState: the viewer's viewport-tracking + zoom maths, extracted from
 * `PowerPointViewer.svelte` to keep the SFC within the file-size budget. The
 * template writes {@link setViewport} from its stage resize callback; the
 * getters derive the effective stage scale from the reactive viewport size,
 * canvas size, fullscreen flag, and manual zoom (all tracked through the
 * runes signals they read).
 */
export declare class LayoutState {
    #private;
    viewportWidth: number;
    viewportHeight: number;
    constructor(deps: LayoutStateDeps);
    setViewport(width: number, height: number): void;
    /** Scale that fits the slide into the viewport (24px padding when windowed). */
    get fittedScale(): number;
    /** Effective stage scale: fit-to-viewport unless a manual zoom is active. */
    get scale(): number;
    /** The zoom percent shown in the toolbar (rounded, min 1). */
    get effectivePercent(): number;
}
//# sourceMappingURL=layout-state.svelte.d.ts.map