improved UX

lib/constants/values.dart

@@ -0,0 +1 @@
+const DURATION_INFINITY = Duration(days: 999);

lib/extensions/snackbar.dart

@@ -1,20 +1,49 @@
 import 'package:flutter/material.dart';
+import 'package:share_location/constants/values.dart';
 import 'package:supabase_flutter/supabase_flutter.dart';
 
 final supabase = Supabase.instance.client;
 
 extension ShowSnackBar on BuildContext {
-  void showSnackBar({
-    required String message,
-    Color backgroundColor = Colors.white,
+  static ScaffoldFeatureController<SnackBar, SnackBarClosedReason>?
+      pendingSnackBar;
+
+  ScaffoldFeatureController<SnackBar, SnackBarClosedReason> showSnackBar({
+    required final String message,
+    final Color backgroundColor = Colors.white,
+    final Duration duration = const Duration(seconds: 4),
   }) {
-    ScaffoldMessenger.of(this).showSnackBar(SnackBar(
-      content: Text(message),
-      backgroundColor: backgroundColor,
-    ));
+    pendingSnackBar?.close();
+    pendingSnackBar = null;
+
+    return ScaffoldMessenger.of(this).showSnackBar(
+      SnackBar(
+        content: Text(message),
+        backgroundColor: backgroundColor,
+        duration: duration,
+      ),
+    );
   }
 
-  void showErrorSnackBar({required String message}) {
-    showSnackBar(message: message, backgroundColor: Colors.red);
+  void showErrorSnackBar({required final String message}) {
+    showSnackBar(
+      message: message,
+      backgroundColor: Colors.red,
+    );
+  }
+
+  void showSuccessSnackBar({required final String message}) {
+    showSnackBar(
+      message: message,
+      backgroundColor: Colors.green,
+    );
+  }
+
+  void showPendingSnackBar({required final String message}) {
+    pendingSnackBar = showSnackBar(
+      message: message,
+      backgroundColor: Colors.yellow,
+      duration: DURATION_INFINITY,
+    );
   }
 }

lib/screens/main_screen.dart

@@ -1,4 +1,5 @@
 import 'dart:io';
+import 'dart:typed_data';
 
 import 'package:camera/camera.dart';
 import 'package:flutter/material.dart';
@@ -12,6 +13,7 @@ import 'package:share_location/utils/loadable.dart';
 import 'package:share_location/widgets/camera_button.dart';
 import 'package:share_location/widgets/change_camera_button.dart';
 import 'package:share_location/widgets/today_photo_button.dart';
+import 'package:share_location/widgets/uploading_photo.dart';
 import 'package:supabase_flutter/supabase_flutter.dart';
 
 class MainScreen extends StatefulWidget {
@@ -27,6 +29,7 @@ class _MainScreenState extends AuthRequiredState<MainScreen> with Loadable {
   bool isRecording = false;
   bool hasGrantedPermissions = false;
   List? lastPhoto;
+  Uint8List? uploadingPhotoAnimation;
 
   late User _user;
 
@@ -114,26 +117,27 @@ class _MainScreenState extends AuthRequiredState<MainScreen> with Loadable {
       return;
     }
 
+    context.showPendingSnackBar(message: 'Taking photo...');
+
     controller!.setFlashMode(FlashMode.off);
     final file = File((await controller!.takePicture()).path);
 
+    setState(() {
+      uploadingPhotoAnimation = file.readAsBytesSync();
+    });
+
+    context.showPendingSnackBar(message: 'Uploading photo...');
+
     try {
       await FileManager.uploadFile(_user, file);
     } catch (error) {
-      if (mounted) {
-        context.showErrorSnackBar(message: error.toString());
-      }
+      context.showErrorSnackBar(message: error.toString());
       return;
     }
 
-    if (mounted) {
-      ScaffoldMessenger.of(context).showSnackBar(
-        const SnackBar(
-          content: Text('Photo saved.'),
-          backgroundColor: Colors.green,
-        ),
-      );
+    context.showSuccessSnackBar(message: 'Photo uploaded!');
 
+    if (mounted) {
       await getLastPhoto();
     }
   }
@@ -148,8 +152,12 @@ class _MainScreenState extends AuthRequiredState<MainScreen> with Loadable {
       isRecording = false;
     });
 
+    context.showPendingSnackBar(message: 'Saving video...');
+
     final file = File((await controller!.stopVideoRecording()).path);
 
+    context.showPendingSnackBar(message: 'Uploading video...');
+
     try {
       await FileManager.uploadFile(_user, file);
     } catch (error) {
@@ -159,13 +167,9 @@ class _MainScreenState extends AuthRequiredState<MainScreen> with Loadable {
       return;
     }
 
+    context.showSuccessSnackBar(message: 'Video uploaded!');
+
     if (mounted) {
-      ScaffoldMessenger.of(context).showSnackBar(
-        const SnackBar(
-          content: Text('Video saved.'),
-          backgroundColor: Colors.green,
-        ),
-      );
       await getLastPhoto();
     }
   }
@@ -211,18 +215,21 @@ class _MainScreenState extends AuthRequiredState<MainScreen> with Loadable {
                       child: Row(
                         mainAxisAlignment: MainAxisAlignment.spaceBetween,
                         children: <Widget>[
-                          ChangeCameraButton(onChangeCamera: () {
-                            final currentCameraIndex = GlobalValuesManager
-                                .cameras
-                                .indexOf(controller!.description);
-                            final availableCameras =
-                                GlobalValuesManager.cameras.length;
+                          ChangeCameraButton(
+                            onChangeCamera: () {
+                              final currentCameraIndex = GlobalValuesManager
+                                  .cameras
+                                  .indexOf(controller!.description);
+                              final availableCameras =
+                                  GlobalValuesManager.cameras.length;
 
-                            onNewCameraSelected(
-                              GlobalValuesManager.cameras[
-                                  (currentCameraIndex + 1) % availableCameras],
-                            );
-                          }),
+                              onNewCameraSelected(
+                                GlobalValuesManager.cameras[
+                                    (currentCameraIndex + 1) %
+                                        availableCameras],
+                              );
+                            },
+                          ),
                           CameraButton(
                             active: isRecording,
                             onVideoBegin: () async {
@@ -251,6 +258,15 @@ class _MainScreenState extends AuthRequiredState<MainScreen> with Loadable {
                     )
                   ],
                 ),
+                if (uploadingPhotoAnimation != null)
+                  UploadingPhoto(
+                    data: uploadingPhotoAnimation!,
+                    onDone: () {
+                      setState(() {
+                        uploadingPhotoAnimation = null;
+                      });
+                    },
+                  )
               ],
             ),
           );

lib/widgets/camera_button.dart

@@ -1,11 +1,13 @@
+import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 
-class CameraButton extends StatelessWidget {
+class CameraButton extends StatefulWidget {
   final bool active;
   final VoidCallback onPhotoShot;
   final VoidCallback onVideoBegin;
   final VoidCallback onVideoEnd;
+  final bool disabled;
 
   const CameraButton({
     Key? key,
@@ -13,61 +15,111 @@ class CameraButton extends StatelessWidget {
     required this.onVideoBegin,
     required this.onVideoEnd,
     this.active = false,
+    this.disabled = false,
   }) : super(key: key);
 
+  @override
+  State<CameraButton> createState() => _CameraButtonState();
+}
+
+class _CameraButtonState extends State<CameraButton> {
+  bool shrinkIcon = false;
+
   @override
   Widget build(BuildContext context) {
-    return InkWell(
+    return GestureDetector(
       onTap: () {
+        if (widget.disabled) {
+          return;
+        }
+
+        setState(() {
+          shrinkIcon = false;
+        });
+
         HapticFeedback.heavyImpact();
 
-        if (active) {
-          onVideoEnd();
+        if (widget.active) {
+          widget.onVideoEnd();
         } else {
-          onPhotoShot();
+          widget.onPhotoShot();
+        }
+      },
+      onLongPressDown: (_) {
+        if (widget.disabled) {
+          return;
+        }
+
+        setState(() {
+          shrinkIcon = true;
+        });
+      },
+      onLongPressUp: () {
+        if (widget.disabled) {
+          return;
+        }
+
+        setState(() {
+          shrinkIcon = false;
+        });
+
+        if (widget.active) {
+          widget.onVideoEnd();
         }
       },
       onLongPress: () {
+        if (widget.disabled) {
+          return;
+        }
+
         HapticFeedback.heavyImpact();
 
-        if (active) {
-          onVideoEnd();
+        if (widget.active) {
+          widget.onVideoEnd();
         } else {
-          onVideoBegin();
+          widget.onVideoBegin();
         }
       },
-      child: Stack(
-        alignment: Alignment.center,
-        children: active
-            ? const <Widget>[
-                Icon(
-                  Icons.circle,
-                  size: 75,
-                  color: Colors.white,
-                ),
-                Icon(
-                  Icons.circle,
-                  size: 65,
-                  color: Colors.red,
-                ),
-                Icon(
-                  Icons.stop,
-                  size: 45,
-                  color: Colors.white,
-                ),
-              ]
-            : <Widget>[
-                Icon(
-                  Icons.circle,
-                  size: 75,
-                  color: Colors.white.withOpacity(.2),
-                ),
-                const Icon(
-                  Icons.circle,
-                  size: 50,
-                  color: Colors.white,
-                ),
-              ],
+      child: Opacity(
+        opacity: widget.disabled ? 0.5 : 1.0,
+        child: Stack(
+          alignment: Alignment.center,
+          children: widget.active
+              ? const <Widget>[
+                  Icon(
+                    Icons.circle,
+                    size: 75,
+                    color: Colors.white,
+                  ),
+                  Icon(
+                    Icons.circle,
+                    size: 65,
+                    color: Colors.red,
+                  ),
+                  Icon(
+                    Icons.stop,
+                    size: 45,
+                    color: Colors.white,
+                  ),
+                ]
+              : <Widget>[
+                  Icon(
+                    Icons.circle,
+                    size: 75,
+                    color: Colors.white.withOpacity(.2),
+                  ),
+                  AnimatedScale(
+                    duration: kLongPressTimeout,
+                    curve: Curves.easeInOut,
+                    scale: shrinkIcon ? .8 : 1,
+                    child: const Icon(
+                      Icons.circle,
+                      size: 50,
+                      color: Colors.white,
+                    ),
+                  ),
+                ],
+        ),
       ),
     );
   }

lib/widgets/raw_memory_display.dart

@@ -9,12 +9,14 @@ import 'package:video_player/video_player.dart';
 class RawMemoryDisplay extends StatefulWidget {
   final Uint8List data;
   final MemoryType type;
+  final bool loopVideo;
   final String? filename;
 
   const RawMemoryDisplay({
     Key? key,
     required this.data,
     required this.type,
+    this.loopVideo = false,
     this.filename,
   }) : super(key: key);
 
@@ -56,7 +58,7 @@ class _RawMemoryDisplayState extends State<RawMemoryDisplay> {
     videoController = VideoPlayerController.file(file);
     videoController!.initialize().then((value) {
       setState(() {});
-      videoController!.setLooping(true);
+      videoController!.setLooping(widget.loopVideo);
       videoController!.play();
     });
   }

lib/widgets/uploading_photo.dart

@@ -0,0 +1,78 @@
+import 'dart:typed_data';
+
+import 'package:flutter/material.dart';
+import 'package:share_location/constants/spacing.dart';
+
+class UploadingPhoto extends StatefulWidget {
+  final Uint8List data;
+  final VoidCallback onDone;
+
+  const UploadingPhoto({
+    Key? key,
+    required this.data,
+    required this.onDone,
+  }) : super(key: key);
+
+  @override
+  State<UploadingPhoto> createState() => _UploadingPhotoState();
+}
+
+class _UploadingPhotoState extends State<UploadingPhoto>
+    with TickerProviderStateMixin {
+  late final AnimationController controller;
+  late final Animation<double> animation;
+
+  @override
+  void initState() {
+    super.initState();
+
+    controller = AnimationController(
+      duration: const Duration(milliseconds: 200),
+      vsync: this,
+    );
+    animation = Tween(begin: 1.0, end: 0.8).animate(
+      CurvedAnimation(
+        parent: controller,
+        curve: Curves.easeOutQuad,
+      ),
+    );
+
+    controller.addStatusListener((status) {
+      if (status == AnimationStatus.completed) {
+        Future.delayed(const Duration(milliseconds: 500), () {
+          if (mounted) {
+            widget.onDone();
+          }
+        });
+      }
+    });
+
+    controller.forward();
+  }
+
+  @override
+  void dispose() {
+    controller.dispose();
+
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ScaleTransition(
+      scale: animation,
+      child: Container(
+        width: MediaQuery.of(context).size.width,
+        height: MediaQuery.of(context).size.height,
+        decoration: BoxDecoration(
+          border: Border.all(
+            color: Colors.white,
+            width: 15,
+          ),
+          borderRadius: BorderRadius.circular(SMALL_SPACE),
+        ),
+        child: Image.memory(widget.data, fit: BoxFit.cover),
+      ),
+    );
+  }
+}