add: logging

Author: jkgenser

demo/App.tsx

@@ -27,8 +27,8 @@ function App() {
   const [zoomMode, setZoomMode] = useState<ZoomMode>("default");
   const [pageNum, setPageNum] = useState<number | null>(null);
   const [scale, setScale] = useState<number | null>(0.75);
-  const [file, setFile] = useState<string>("pdf-open-parameters.pdf");
-  const [wantPage, setWantPage] = useState<number | null>(null);
+  const [file, setFile] = useState<string>("rai.pdf");
+  const [wantPage, setWantPage] = useState<number | null>();
   const [readerAPI, setReaderAPI] = useState<ReaderAPI | null>(null);
   const [offset, setOffset] = useState<number | null>(null);
   const [virtualItemAndOffset, setVirtualItemAndOffset] =

src/Reader.tsx

@@ -323,10 +323,11 @@ const Reader = ({
           startOffset: startOffset,
         });
         console.log({
+          itemStartOffset: startOffset,
           itemHeight,
           percentageY: scrollAnchor.percentageOffsetY,
-          startOffset,
-          offset,
+          offsetExtra: itemHeight * scrollAnchor.percentageOffsetY * 0.01,
+          offsetFinal: offset,
         });
 
         virtualizer.scrollToOffset(offset, {