Recently the PDF rendering get a messed up text layer where text gets duplicated with the grey colored overlay.
No idea about how to fix it as when i remove textLayerFactory: new pdfjsViewer.DefaultTextLayerFactory() it works fine. but need this as if not is render as images which takes a lot of time for large documents
Im using pdfjsViewer.PDFPageView
my code as follows
getPdf() {
var pdfDocument;
if ( this._state !== 'inDOM' ) return false;
pdfjsLib.disableRange = true;
pdfjsLib.disableStream = true;
let self = this;
pdfDocument = pdfjsLib.getDocument(this.src);
pdfDocument.promise.then(function(pdf) {
self.set( 'pdfDocument', pdf );
self.set( 'maxNumPages', pdf.numPages );
self.set( 'prevBtnDisabled', true );
self.set( 'documentRendered', true );
self.setViewportWidth();
self.renderPdf();
});
return pdfDocument;
},
renderPdf() {
var pdf = this.pdfDocument,
maxNumPages,
pagePromise;
if ( !pdf ) return false;
maxNumPages = this.maxNumPages;
pagePromise = this.getAndRenderPage( pdf, 1 );
Array.apply( null, new Array( maxNumPages - 1 ) ).forEach( ( value, index ) => {
pagePromise = pagePromise.then( () => this.getAndRenderPage( pdf, index + 2 ) );
} );
},
getAndRenderPage( pdf, index ) {
return pdf.getPage( index ).then( page => this.renderPage( page, index ) );
},
renderPage( pdfPage, pageNum ) {
var parentWidth = this.$().parent().width(),
pageViewportScale = ( parentWidth >= this.get( 'breakpoints.mobile' ) ) ? 1.5 : 1.3,
viewport = pdfPage.getViewport( { scale: parentWidth / pdfPage.getViewport( { scale: pageViewportScale } ).width } ),
container = this.$().find( '.pdf_viewer--container' )[ 0 ],
pdfPageView;
pdfPageView = new pdfjsViewer.PDFPageView( {
container: container,
id: pageNum,
scale: viewport.scale,
defaultViewport: viewport,
textLayerFactory: new pdfjsViewer.DefaultTextLayerFactory()
} );
var pages = this.get('pages');
// Associates the actual page with the view, and drawing it
pages.push( pdfPageView );
this.set( 'pages', pages );
this.set( 'scale', viewport.scale );z
pdfPageView.setPdfPage( pdfPage );
return pdfPageView.draw();
},
i have seen same kind of questioned asked and its for angular Im importing his image as for the reference in here to give a more explanation about the issue
Reported Issue PDFJS: Text layer rendering twice
