fixup! TF-3246 Fix PDF viewer scrollbar not working

linagora · Dec 16, 2024 · 8e47e6d · 8e47e6d
1 parent 2cc75a0
commit 8e47e6d
Showing 1 changed file with 13 additions and 1 deletion.
diff --git a/lib/features/email/presentation/widgets/pdf_viewer/pdf_viewer.dart b/lib/features/email/presentation/widgets/pdf_viewer/pdf_viewer.dart
@@ -309,6 +309,18 @@ class _PDFViewerState extends State<PDFViewer> {
     List<Rect> pageRects,
     PdfViewerController controller,
   ) {
+    if (pageRects.isEmpty) {
+      return null;
+    }
+
+    if (pageRects.first.top == visibleRect.top) {
+      return 1; // view at top
+    }
+
+    if (pageRects.last.bottom == visibleRect.bottom) {
+      return pageRects.length; // view at bottom
+    }
+
     final intersectRatios = <double>[];
     for (var i = 0; i < pageRects.length; i++) {
       final intersect = pageRects[i].intersect(visibleRect);
@@ -321,7 +333,7 @@ class _PDFViewerState extends State<PDFViewer> {
       intersectRatios.add(intersectRatio);
     }
     final maxIntersectRatio = intersectRatios.reduce(max);
-    return intersectRatios.lastIndexOf(maxIntersectRatio) + 1;
+    return intersectRatios.indexOf(maxIntersectRatio) + 1;
   }
 
   void _closeView() {