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Fix beamer PDF preview scroll drift on recompile (#32077)

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GitOrigin-RevId: 6f15671ba7f7944446e48136b775dea7e5c9b34a
This commit is contained in:
Copilot
2026-03-19 10:45:43 +00:00
committed by Copybot
parent 616f99fece
commit 1dffe20f05
1 changed files with 14 additions and 2 deletions
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16
services/web/frontend/js/features/pdf-preview/util/pdf-js-wrapper.ts
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@@ -161,11 +161,23 @@ export default class PDFJSWrapper {
// get the current page, offset and page size
get currentPosition() {
const pageIndex = this.viewer.currentPageNumber - 1
const containerRect = this.container.getBoundingClientRect()
let pageIndex = this.viewer.currentPageNumber - 1
for (let i = pageIndex; i >= 0; i--) {
const pageView = this.viewer.getPageView(i)
if (!pageView?.div) continue
const pageRect = pageView.div.getBoundingClientRect()
if (pageRect.bottom < containerRect.top) {
pageIndex = i + 1
break
}
pageIndex = i
}
const pageView = this.viewer.getPageView(pageIndex)
const pageRect = pageView.div.getBoundingClientRect()
const containerRect = this.container.getBoundingClientRect()
const dy = containerRect.top - pageRect.top
const dx = containerRect.left - pageRect.left
const [left, top] = pageView.viewport.convertToPdfPoint(dx, dy)