import { PptxElement, PptxSlide, TextSegment } from 'pptx-viewer-core';
/**
 * Pure, immutable slide-array mutations for the Svelte editor.
 *
 * Mirrors the vanilla binding's `editor-mutations` (in turn the Vue binding's
 * `useEditorOperations` commit helpers), minus the reactivity: every function
 * takes the current `PptxSlide[]` and returns a brand-new array (untouched
 * slides are reused by reference so the render layer can cheaply detect
 * changes). All cloning defers to the core helpers (`cloneSlide`,
 * `cloneElement`, `duplicateElement`); nothing is mutated in place.
 */
/** Geometry patch applied by drag / resize / rotate / nudge. */
export interface ElementBoxPatch {
    x: number;
    y: number;
    width: number;
    height: number;
    rotation: number;
}
/** Find a top-level element by id on the given slide (or `undefined`). */
export declare function findSlideElement(slides: readonly PptxSlide[], slideIndex: number, elementId: string): PptxElement | undefined;
/** Rebuild one slide's `elements` via `mapElements`; other slides are reused. */
export declare function mapSlideElements(slides: readonly PptxSlide[], slideIndex: number, mapElements: (elements: PptxElement[]) => PptxElement[]): PptxSlide[];
/** Shallow-merge `updates` into the element with `elementId` (cloned first). */
export declare function updateElement(slides: readonly PptxSlide[], slideIndex: number, elementId: string, updates: Partial<PptxElement>): PptxSlide[];
/** Patch an element's geometry (x/y/width/height/rotation). */
export declare function patchElementGeometry(slides: readonly PptxSlide[], slideIndex: number, elementId: string, box: ElementBoxPatch): PptxSlide[];
/** Remove the element with `elementId` from the slide. */
export declare function removeElement(slides: readonly PptxSlide[], slideIndex: number, elementId: string): PptxSlide[];
/**
 * Deep-clone an element (fresh ids via core `duplicateElement`, group children
 * included), offset it slightly, and append it to the slide. Returns the new
 * slide array plus the copy's id, or `null` when the source is missing.
 */
export declare function duplicateElementOnSlide(slides: readonly PptxSlide[], slideIndex: number, elementId: string): {
    slides: PptxSlide[];
    newId: string;
} | null;
/** Deep-clone the whole slide array (history snapshots). */
export declare function cloneSlides(slides: readonly PptxSlide[]): PptxSlide[];
/**
 * Replace the plain-text speaker notes on one slide. Mirrors the Vue binding's
 * `onNotesUpdate`: only `notes` is written, `notesSegments` (rich runs loaded
 * from a .pptx) is intentionally left untouched, matching the plain-text
 * commit contract shared by every binding's notes panel.
 */
export declare function updateSlideNotes(slides: readonly PptxSlide[], slideIndex: number, notes: string, notesSegments?: TextSegment[]): PptxSlide[];
/**
 * Shallow-merge `patch` into the slide at `slideIndex` (cloned first). Other
 * slides are reused by reference. Backs the Design tab's Format Background
 * panel and the Transitions tab's single-slide apply.
 */
export declare function updateSlide(slides: readonly PptxSlide[], slideIndex: number, patch: Partial<PptxSlide>): PptxSlide[];
/**
 * Shallow-merge `patch` into every slide. Backs the Transitions tab's
 * "Apply to All Slides" option.
 */
export declare function updateAllSlides(slides: readonly PptxSlide[], patch: Partial<PptxSlide>): PptxSlide[];
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