Merge branch 'feature/photoview' of kilowatt36/freezer into master

lib/api/player.dart

@@ -29,7 +29,7 @@ class PlayerHelper {
   QueueSource queueSource;
   LoopMode repeatType = LoopMode.off;
   //Find queue index by id
-  int get queueIndex => AudioService.queue.indexWhere((mi) => mi.id == AudioService.currentMediaItem?.id??'Random string so it returns -1');
+  int get queueIndex => AudioService.queue == null ? 0 : AudioService.queue.indexWhere((mi) => mi.id == AudioService.currentMediaItem?.id??'Random string so it returns -1');
 
   Future start() async {
      //Subscribe to custom events

lib/ui/cached_image.dart

@@ -2,6 +2,7 @@ import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:palette_generator/palette_generator.dart';
 import 'package:cached_network_image/cached_network_image.dart';
+import 'package:photo_view/photo_view.dart';
 
 ImagesDatabase imagesDatabase = ImagesDatabase();
 
@@ -78,3 +79,61 @@ class _CachedImageState extends State<CachedImage> {
     );
   }
 }
+
+class ZoomableImage extends StatefulWidget {
+  final String url;
+  final bool rounded;
+  final double width;
+
+  ZoomableImage({@required this.url, this.rounded = false, this.width});
+
+  @override
+  _ZoomableImageState createState() => _ZoomableImageState();
+}
+
+class _ZoomableImageState extends State<ZoomableImage> {
+  BuildContext ctx;
+  PhotoViewController controller;
+  bool photoViewOpened = false;
+
+  @override
+  void initState() {
+    super.initState();
+    controller = PhotoViewController()
+      ..outputStateStream.listen(listener);
+  }
+
+  // Listener of PhotoView scale changes. Used for closing PhotoView by pinch-in
+  void listener(PhotoViewControllerValue value) {
+    if (value.scale < 0.16 && photoViewOpened) {
+      Navigator.pop(ctx);
+      photoViewOpened = false; // to avoid multiple pop() when picture are being scaled out too slowly
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    ctx = context;
+    return FlatButton(
+        child: CachedImage(
+          url: widget.url,
+          rounded: widget.rounded,
+          width: widget.width,
+          fullThumb: true,
+        ),
+        onPressed: () {
+          Navigator.of(context).push(PageRouteBuilder(
+              opaque: false, // transparent background
+              pageBuilder: (context, a, b) {
+                photoViewOpened = true;
+                return PhotoView(
+                    imageProvider: CachedNetworkImageProvider(widget.url),
+                    maxScale: 8.0,
+                    minScale: 0.2,
+                    controller: controller,
+                    backgroundDecoration:
+                        BoxDecoration(color: Color.fromARGB(0x90, 0, 0, 0)));
+              }));
+        });
+  }
+}

lib/ui/details_screens.dart

@@ -60,10 +60,9 @@ class AlbumDetails extends StatelessWidget {
                   mainAxisSize: MainAxisSize.min,
                   children: <Widget>[
                     Container(height: 8.0,),
-                    CachedImage(
+                    ZoomableImage(
                       url: album.art.full,
                       width: MediaQuery.of(context).size.width / 2,
-                      fullThumb: true,
                       rounded: true,
                     ),
                     Container(height: 8,),
@@ -303,11 +302,10 @@ class ArtistDetails extends StatelessWidget {
                 child: Row(
                   mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                   children: <Widget>[
-                    CachedImage(
+                    ZoomableImage(
                       url: artist.picture.full,
                       width: MediaQuery.of(context).size.width / 2 - 8,
                       rounded: true,
-                      fullThumb: true,
                     ),
                     Container(
                       width: MediaQuery.of(context).size.width / 2 - 8,

lib/ui/player_screen.dart

@@ -470,10 +470,7 @@ class _BigAlbumArtState extends State<BigAlbumArt> {
           if (_animationLock) return;
           AudioService.skipToQueueItem(AudioService.queue[index].id);
         },
-        children: List.generate(AudioService.queue.length, (i) => CachedImage(
-          url: AudioService.queue[i].artUri,
-          fullThumb: true,
-        )),
+        children: List.generate(AudioService.queue.length, (i) => ZoomableImage(url: AudioService.queue[i].artUri)),
       ),
     );
   }

pubspec.lock

@@ -651,6 +651,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.1"
+  photo_view:
+    dependency: "direct main"
+    description:
+      name: photo_view
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.10.2"
   platform:
     dependency: transitive
     description:

pubspec.yaml

@@ -69,6 +69,7 @@ dependencies:
   share: ^0.6.5+2
   numberpicker: ^1.2.1
   quick_actions: ^0.4.0+10
+  photo_view:
 
   audio_session: ^0.0.9
   audio_service: