Add shouldRepaint parameter

@@ -5,6 +5,7 @@
 - Improve Android page format detection [Deepak]
 - Add previewPageMargin and padding parameters [Deepak]
 - Fix Scrollbar positionning and default margins
+- Add shouldRepaint parameter
 
 ## 5.1.0
 

@@ -41,6 +41,7 @@ class PdfPreview extends StatefulWidget {
     this.shareActionExtraEmails,
     this.previewPageMargin,
     this.padding,
+    this.shouldRepaint = false,
   }) : super(key: key);
 
   /// Called when a pdf document is needed
@@ -121,6 +122,9 @@ class PdfPreview extends StatefulWidget {
   /// padding for the pdf_preview widget
   final EdgeInsets? padding;
 
+  /// Force repainting the PDF document
+  final bool shouldRepaint;
+
   @override
   _PdfPreviewState createState() => _PdfPreviewState();
 }
@@ -292,7 +296,7 @@ class _PdfPreviewState extends State<PdfPreview> {
 
   @override
   void didUpdateWidget(covariant PdfPreview oldWidget) {
-    if (oldWidget.build != widget.build) {
+    if (oldWidget.build != widget.build || widget.shouldRepaint) {
       preview = null;
       updatePosition = null;
       _raster();