Add support to render pdf page using pdfium with the help of optional package - syncfusion_pdfviewer_android

Author: immankumarsync

packages/syncfusion_flutter_pdfviewer/lib/src/pdfviewer.dart

@@ -3302,7 +3302,7 @@ class SfPdfViewerState extends State<SfPdfViewer> with WidgetsBindingObserver {
       } else {
         document.security.userPassword = '';
         document.security.ownerPassword = '';
-        _decryptedBytes = document.saveAsBytesSync();
+        _decryptedBytes = document.saveSync();
       }
     } else {
       _decryptedBytes = pdfBytes;

packages/syncfusion_flutter_pdfviewer_platform_interface/lib/src/method_channel_pdfviewer.dart

@@ -9,10 +9,14 @@ class MethodChannelPdfViewer extends PdfViewerPlatform {
   /// If success, returns page count else returns error message from respective platform
   @override
   Future<String?> initializePdfRenderer(
-      Uint8List documentBytes, String documentID) async {
+    Uint8List documentBytes,
+    String documentID, [
+    String? password,
+  ]) async {
     return _channel.invokeMethod('initializePdfRenderer', <String, dynamic>{
       'documentBytes': documentBytes,
-      'documentID': documentID
+      'documentID': documentID,
+      'password': password,
     });
   }
 
@@ -31,27 +35,38 @@ class MethodChannelPdfViewer extends PdfViewerPlatform {
   /// Gets the image bytes of the specified page from the document at the specified width and height.
   @override
   Future<Uint8List?> getPage(
-      int pageNumber, int width, int height, String documentID) async {
+    int pageNumber,
+    int width,
+    int height,
+    String documentID,
+  ) async {
     return _channel.invokeMethod<Uint8List>('getPage', <String, dynamic>{
       'index': pageNumber,
       'width': width,
       'height': height,
-      'documentID': documentID
+      'documentID': documentID,
     });
   }
 
   /// Gets the image's bytes information of the specified portion of the page
   @override
-  Future<Uint8List?> getTileImage(int pageNumber, double currentScale, double x,
-      double y, double width, double height, String documentID) async {
+  Future<Uint8List?> getTileImage(
+    int pageNumber,
+    double currentScale,
+    double x,
+    double y,
+    double width,
+    double height,
+    String documentID,
+  ) async {
     return _channel.invokeMethod<Uint8List>('getTileImage', <String, dynamic>{
       'pageNumber': pageNumber,
       'scale': currentScale,
       'x': x,
       'y': y,
       'width': width,
       'height': height,
-      'documentID': documentID
+      'documentID': documentID,
     });
   }
 

packages/syncfusion_flutter_pdfviewer_platform_interface/lib/src/pdfviewer_platform_interface.dart

@@ -35,9 +35,13 @@ abstract class PdfViewerPlatform extends PlatformInterface {
   ///
   /// If success, returns page count else returns error message from respective platform
   Future<String?> initializePdfRenderer(
-      Uint8List documentBytes, String documentID) async {
+    Uint8List documentBytes,
+    String documentID, [
+    String? password,
+  ]) async {
     throw UnimplementedError(
-        'initializePdfRenderer() has not been implemented.');
+      'initializePdfRenderer() has not been implemented.',
+    );
   }
 
   /// Gets the height of all pages in the document.
@@ -52,19 +56,33 @@ abstract class PdfViewerPlatform extends PlatformInterface {
 
   /// Gets the image's bytes information of the specified page.
   Future<Uint8List?> getImage(
-      int pageNumber, double scale, String documentID) async {
+    int pageNumber,
+    double scale,
+    String documentID,
+  ) async {
     throw UnimplementedError('getImage() has not been implemented.');
   }
 
   /// Gets the image bytes of the specified page from the document at the specified width and height.
   Future<Uint8List?> getPage(
-      int pageNumber, int width, int height, String documentID) async {
+    int pageNumber,
+    int width,
+    int height,
+    String documentID,
+  ) async {
     throw UnimplementedError('getPage() has not been implemented.');
   }
 
   /// Gets the image's bytes information of the specified portion of the page.
-  Future<Uint8List?> getTileImage(int pageNumber, double scale, double x,
-      double y, double width, double height, String documentID) async {
+  Future<Uint8List?> getTileImage(
+    int pageNumber,
+    double scale,
+    double x,
+    double y,
+    double width,
+    double height,
+    String documentID,
+  ) async {
     throw UnimplementedError('getTileImage() has not been implemented.');
   }