At an event that occurs after the PDF is loaded I load in drawings to put on the canvas. I need to know which page(s) are currently rendered so as to get the correct drawings.
How can I detect which page(s) are currently rendered (ie, visible, possibly more than one because of user scrolling between pages)?
You can use the following code to achieve it:
function getCurrentPage() {
let pdfViewer = PDFViewerApplication.pdfViewer;
let pageIndex = pdfViewer.currentPageNumber - 1;
let pageView = pdfViewer.getPageView(pageIndex); //Give you the pageView object
let domElement = pdfViewer.getPageView(0).div; // Give you the reference to page dom element
return pageView;
}
Hope this helps
