Pages and Elements

FPdf owns pages, and each FPdfPage exposes the durable editable overlays placed on that page.

Read and insert pages

Page indexes are zero-based. insertPage(index?) inserts at an index or appends when the index is omitted; an empty document uses A4 dimensions.

const pdf = univerAPI.getActivePdf()if (!pdf) {  throw new Error('No active PDF')}const page = pdf.getPageByIndex(0) ?? pdf.insertPage()const pages = pdf.getPages()const samePage = pdf.getPageById(page.getId())

Enumerate editable elements

getElements() returns editable overlays in z-order. It does not return native objects from the imported PDF.

const elements = page.getElements()const [firstElement] = elementsconst sameElement = firstElement ? page.getElementById(firstElement.getId()) : null

Use the typed getters when you need a specialized wrapper: getTextBoxes(), getParagraphs(), getLists(), getTables(), getImages(), getDividers(), and getAnnotations().

Transform and remove elements

Facade placement uses PDF points. Snapshot geometry returned by getData() uses core PDF units, so update placement through the Facade methods.

const [element] = page.getElements()if (element) {  element    .setPosition(36, 72)    .setSize(288, 144)    .setRotation(5)    .setVisible(true)    .setLocked(false)    .bringToFront()}

Use remove() to delete an editable element. After removal, do not reuse the stale wrapper.