Exposed EpubChapterRef and updated flutter_ex

flutter_ex now shows chapter count and the Cover Image (if present)

example/flutter_ex/lib/main.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:http/http.dart' as http;
 import 'package:epub/epub.dart' as epub;
+import 'package:image/image.dart' as image;
 
 void main() => runApp(EpubWidget());
 
@@ -33,8 +34,8 @@ class EpubState extends State<EpubWidget> {
                 color: Colors.white,
                 child: new Container(
                   child: new Center(
-                      child: new Column(children: [
-                    new Padding(padding: EdgeInsets.only(top: 140.0)),
+                      child: new ListView(children: [
+                    new Padding(padding: EdgeInsets.only(top: 70.0)),
                     new Text(
                       'Epub Inspector',
                       style: new TextStyle(fontSize: 25.0),
@@ -104,6 +105,8 @@ class EpubState extends State<EpubWidget> {
 }
 
 Widget buildEpubWidget(epub.EpubBookRef book) {
+  var chapters = book.getChapters();
+  var cover = book.readCover();
   return Container(
       child: new Column(
     children: <Widget>[
@@ -125,12 +128,55 @@ Widget buildEpubWidget(epub.EpubBookRef book) {
       Text(
         book.Author,
         style: TextStyle(fontSize: 15.0),
-      )
+      ),
+      new Padding(
+        padding: EdgeInsets.only(top: 15.0),
+      ),
+      FutureBuilder<List<epub.EpubChapterRef>>(
+          future: chapters,
+          builder: (context, snapshot) {
+            if (snapshot.hasData) {
+              return Column(
+                children: <Widget>[
+                  Text("Chapters", style: TextStyle(fontSize: 20.0)),
+                  Text(
+                    snapshot.data.length.toString(),
+                    style: TextStyle(fontSize: 15.0),
+                  )
+                ],
+              );
+            } else if (snapshot.hasError) {
+              return Text("${snapshot.error}");
+            }
+            return Container();
+          }),
+      new Padding(
+        padding: EdgeInsets.only(top: 15.0),
+      ),
+      FutureBuilder<epub.Image>(
+        future: cover,
+        builder: (context, snapshot) {
+          if (snapshot.hasData) {
+            return Column(
+              children: <Widget>[
+                Text("Cover", style: TextStyle(fontSize: 20.0)),
+                Image.memory(image.encodePng(snapshot.data)),
+              ],
+            );
+          } else if (snapshot.hasError) {
+            return Text("${snapshot.error}");
+          }
+          return Container();
+        },
+      ),
     ],
   ));
 }
 
-// Needs a url to a valid url to an epub like 'https://www.gutenberg.org/ebooks/11.epub.images'
+// Needs a url to a valid url to an epub such as
+// https://www.gutenberg.org/ebooks/11.epub.images
+// or
+// https://www.gutenberg.org/ebooks/19002.epub.images
 Future<epub.EpubBookRef> fetchBook(String url) async {
   // Hard coded to Alice Adventures In Wonderland in Project Gutenberb
   final response = await http.get(url);

example/flutter_ex/pubspec.yaml

@@ -1,16 +1,6 @@
 name: flutter_ex
 description: A new Flutter project.
 
-# The following defines the version and build number for your application.
-# A version number is three numbers separated by dots, like 1.2.43
-# followed by an optional build number separated by a +.
-# Both the version and the builder number may be overridden in flutter
-# build by specifying --build-name and --build-number, respectively.
-# In Android, build-name is used as versionName while build-number used as versionCode.
-# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
-# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
-# Read more about iOS versioning at
-# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 version: 1.0.0+1
 
 environment:
@@ -26,51 +16,24 @@ dependencies:
 
   # Epub
   epub: ^2.0.0
+  # To get the epub from the internet
   http:  ^0.12.0+2
 
+  image: ^2.0.0
+
+dependency_overrides:
+  epub:
+    path: ../../
+
 dev_dependencies:
   flutter_test:
     sdk: flutter
 
 
-# For information on the generic Dart part of this file, see the
-# following page: https://www.dartlang.org/tools/pub/pubspec
 
 # The following section is specific to Flutter.
 flutter:
-
   # The following line ensures that the Material Icons font is
   # included with your application, so that you can use the icons in
   # the material Icons class.
   uses-material-design: true
-
-  # To add assets to your application, add an assets section, like this:
-  # assets:
-  #  - images/a_dot_burr.jpeg
-  #  - images/a_dot_ham.jpeg
-
-  # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
-
-  # For details regarding adding assets from package dependencies, see
-  # https://flutter.dev/assets-and-images/#from-packages
-
-  # To add custom fonts to your application, add a fonts section here,
-  # in this "flutter" section. Each entry in this list should have a
-  # "family" key with the font family name, and a "fonts" key with a
-  # list giving the asset and other descriptors for the font. For
-  # example:
-  # fonts:
-  #   - family: Schyler
-  #     fonts:
-  #       - asset: fonts/Schyler-Regular.ttf
-  #       - asset: fonts/Schyler-Italic.ttf
-  #         style: italic
-  #   - family: Trajan Pro
-  #     fonts:
-  #       - asset: fonts/TrajanPro.ttf
-  #       - asset: fonts/TrajanPro_Bold.ttf
-  #         weight: 700
-  #
-  # For details regarding fonts from package dependencies,
-  # see https://flutter.dev/custom-fonts/#from-packages

lib/epub.dart

@@ -5,6 +5,7 @@ export 'src/utils/enum_from_string.dart';
 export 'src/epub_reader.dart';
 export 'src/epub_writer.dart';
 export 'src/ref_entities/epub_book_ref.dart';
+export 'src/ref_entities/epub_chapter_ref.dart';
 export 'src/entities/epub_book.dart';
 export 'src/entities/epub_chapter.dart';
 export 'src/entities/epub_content.dart';