Add pdf rendering

lib/main.dart

@@ -51,7 +51,7 @@ class _MyHomePageState extends State<MyHomePage> {
                 ),
               );
             } else if (snapshot.hasError) {
-              return const Icon(Icons.error);
+              return Text(snapshot.error.toString());
             } else {
               return const CircularProgressIndicator();
             }

lib/sheet.dart

@@ -6,8 +6,9 @@ import 'package:path/path.dart' as p;
 class Sheet {
   final String author;
   final String name;
+  final String path;
 
-  Sheet(this.author, this.name);
+  Sheet(this.author, this.name, this.path);
 }
 
 Future<List<Sheet>> loadSheetsSorted() async {
@@ -19,17 +20,18 @@ Future<List<Sheet>> loadSheetsSorted() async {
 Future<List<Sheet>> _loadSheets() async {
   // TODO: Handle directory not found
   var dir = Directory("/home/julian/Nextcloud/jhome/Klavier-Noten/");
+  if (!dir.existsSync()) {
+    throw Exception("Folder does not exist");
+  }
   final List<Sheet> sheets = List.empty(growable: true);
-  if (dir.existsSync()) {
-    await for (final FileSystemEntity x in dir.list()) {
-      if (x is Directory) {
-        var authorName = p.basename(x.path);
-        await for (final FileSystemEntity a in x.list()) {
-          if (a is File) {
-            var sheetName = p.basenameWithoutExtension(a.path);
-            sheetName = sheetName.capitalize();
-            sheets.add(Sheet(authorName, sheetName));
-          }
+  await for (final FileSystemEntity x in dir.list()) {
+    if (x is Directory) {
+      var authorName = p.basename(x.path);
+      await for (final FileSystemEntity a in x.list()) {
+        if (a is File) {
+          var sheetName = p.basenameWithoutExtension(a.path);
+          sheetName = sheetName.capitalize();
+          sheets.add(Sheet(authorName, sheetName, a.path));
         }
       }
     }

lib/sheetview.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:pdfx/pdfx.dart';
 import 'package:sheetless/sheet.dart';
 
 class SheetViewerPage extends StatefulWidget {
@@ -11,13 +12,23 @@ class SheetViewerPage extends StatefulWidget {
 }
 
 class _SheetViewerPageState extends State<SheetViewerPage> {
+  PdfControllerPinch? controller;
+
+  @override
+  void initState() {
+    controller =
+        PdfControllerPinch(document: PdfDocument.openFile(widget.sheet.path));
+    super.initState();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: AppBar(
-        title: Text(widget.sheet.name),
-      ),
-      body: Center(child: Text(widget.sheet.author)),
-    );
+        appBar: AppBar(
+          title: Text(widget.sheet.name),
+        ),
+        body: PdfViewPinch(
+          controller: controller!,
+        ));
   }
 }