✨ Detailed attachments

lib/screens/post/post_editor.dart

@@ -338,11 +338,15 @@ class _PostEditorScreenState extends State<PostEditorScreen> {
             child: Column(
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
-                if (_isBusy)
+                if (_isBusy && _progress != null)
-                  LinearProgressIndicator(
+                  TweenAnimationBuilder<double>(
-                    value: _progress,
+                    tween: Tween(begin: 0, end: 1),
-                    minHeight: 2,
+                    duration: Duration(milliseconds: 300),
-                  ),
+                    builder: (context, value, _) =>
+                        LinearProgressIndicator(value: value, minHeight: 2),
+                  )
+                else if (_isBusy)
+                  const LinearProgressIndicator(value: null, minHeight: 2),
                 Row(
                   mainAxisAlignment: MainAxisAlignment.spaceBetween,
                   children: [

lib/widgets/attachment/attachment_detail.dart

@@ -0,0 +1,37 @@
+import 'package:dismissible_page/dismissible_page.dart';
+import 'package:flutter/material.dart';
+import 'package:photo_view/photo_view.dart';
+import 'package:provider/provider.dart';
+import 'package:surface/providers/sn_network.dart';
+import 'package:surface/types/attachment.dart';
+import 'package:surface/widgets/universal_image.dart';
+import 'package:uuid/uuid.dart';
+
+class AttachmentDetailPopup extends StatelessWidget {
+  final SnAttachment data;
+  final String? heroTag;
+  const AttachmentDetailPopup({super.key, required this.data, this.heroTag});
+
+  @override
+  Widget build(BuildContext context) {
+    final sn = context.read<SnNetworkProvider>();
+    final uuid = Uuid();
+
+    return DismissiblePage(
+      onDismissed: () {
+        Navigator.of(context).pop();
+      },
+      direction: DismissiblePageDismissDirection.down,
+      backgroundColor: Colors.transparent,
+      isFullScreen: true,
+      child: Hero(
+        tag: 'attachment-${data.rid}-${heroTag ?? uuid.v4()}',
+        child: PhotoView(
+          imageProvider: UniversalImage.provider(
+            sn.getAttachmentUrl(data.rid),
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/widgets/attachment/attachment_item.dart

@@ -1,25 +1,55 @@
+import 'package:dismissible_page/dismissible_page.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:surface/providers/sn_network.dart';
 import 'package:surface/types/attachment.dart';
+import 'package:surface/widgets/attachment/attachment_detail.dart';
 import 'package:surface/widgets/universal_image.dart';
+import 'package:uuid/uuid.dart';
 
 class AttachmentItem extends StatelessWidget {
   final SnAttachment data;
-  const AttachmentItem({super.key, required this.data});
+  final bool isExpandable;
+  const AttachmentItem({
+    super.key,
+    required this.data,
+    this.isExpandable = false,
+  });
 
-  @override
+  Widget _buildContent(BuildContext context, String heroTag) {
-  Widget build(BuildContext context) {
     final tp = data.mimetype.split('/').firstOrNull;
     final sn = context.read<SnNetworkProvider>();
     switch (tp) {
       case 'image':
-        return UniversalImage(
+        return Hero(
+          tag: 'attachment-${data.rid}-$heroTag',
+          child: UniversalImage(
             sn.getAttachmentUrl(data.rid),
             fit: BoxFit.cover,
+          ),
         );
       default:
         return const Placeholder();
     }
   }
+
+  @override
+  Widget build(BuildContext context) {
+    final uuid = Uuid();
+    final heroTag = uuid.v4();
+
+    if (isExpandable) {
+      return GestureDetector(
+        child: _buildContent(context, heroTag),
+        onTap: () {
+          context.pushTransparentRoute(
+            AttachmentDetailPopup(data: data, heroTag: heroTag),
+            rootNavigator: true,
+          );
+        },
+      );
+    }
+
+    return _buildContent(context, heroTag);
+  }
 }

lib/widgets/attachment/attachment_list.dart

@@ -1,6 +1,9 @@
+import 'dart:math' as math;
+
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:gap/gap.dart';
+import 'package:responsive_framework/responsive_framework.dart';
 import 'package:surface/types/attachment.dart';
 import 'package:surface/widgets/attachment/attachment_item.dart';
 
@@ -15,6 +18,10 @@ class AttachmentList extends StatelessWidget {
     this.maxListHeight,
   });
 
+  static const double kMaxListItemWidth = 520;
+  static const BorderRadius kDefaultRadius =
+      BorderRadius.all(Radius.circular(8));
+
   @override
   Widget build(BuildContext context) {
     final borderSide = (bordered ?? false)
@@ -23,11 +30,36 @@ class AttachmentList extends StatelessWidget {
 
     if (data.isEmpty) return const SizedBox.shrink();
     if (data.length == 1) {
+      if (ResponsiveBreakpoints.of(context).largerThan(MOBILE)) {
+        return Container(
+          constraints: BoxConstraints(
+            maxWidth: math.min(
+              MediaQuery.of(context).size.width - 20,
+              kMaxListItemWidth,
+            ),
+          ),
+          decoration: BoxDecoration(
+            border: Border(top: borderSide, bottom: borderSide),
+            borderRadius: kDefaultRadius,
+          ),
+          child: AspectRatio(
+            aspectRatio: data[0].metadata['ratio']?.toDouble() ?? 1,
+            child: ClipRRect(
+              borderRadius: kDefaultRadius,
+              child: AttachmentItem(data: data[0], isExpandable: true),
+            ),
+          ),
+        );
+      }
+
       return Container(
         decoration: BoxDecoration(
           border: Border(top: borderSide, bottom: borderSide),
         ),
-        child: AttachmentItem(data: data[0]),
+        child: AspectRatio(
+          aspectRatio: data[0].metadata['ratio']?.toDouble() ?? 1,
+          child: AttachmentItem(data: data[0], isExpandable: true),
+        ),
       );
     }
 
@@ -39,20 +71,22 @@ class AttachmentList extends StatelessWidget {
           shrinkWrap: true,
           itemCount: data.length,
           itemBuilder: (context, idx) {
-            const radius = BorderRadius.all(Radius.circular(8));
             return Container(
               constraints: BoxConstraints(
-                maxWidth: MediaQuery.of(context).size.width - 20,
+                maxWidth: math.min(
+                  MediaQuery.of(context).size.width - 20,
+                  kMaxListItemWidth,
+                ),
               ),
               decoration: BoxDecoration(
                 border: Border(top: borderSide, bottom: borderSide),
-                borderRadius: radius,
+                borderRadius: kDefaultRadius,
               ),
               child: AspectRatio(
                 aspectRatio: data[idx].metadata['ratio']?.toDouble() ?? 1,
                 child: ClipRRect(
-                  borderRadius: radius,
+                  borderRadius: kDefaultRadius,
-                  child: AttachmentItem(data: data[idx]),
+                  child: AttachmentItem(data: data[idx], isExpandable: true),
                 ),
               ),
             );

pubspec.lock

@@ -334,6 +334,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.0"
+  dismissible_page:
+    dependency: "direct main"
+    description:
+      name: dismissible_page
+      sha256: "5b2316f770fe83583f770df1f6505cb19102081c5971979806e77f2e507a9958"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.2"
   dropdown_button2:
     dependency: "direct main"
     description:
@@ -1034,6 +1042,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.0.2"
+  photo_view:
+    dependency: "direct main"
+    description:
+      name: photo_view
+      sha256: "1fc3d970a91295fbd1364296575f854c9863f225505c28c46e0a03e48960c75e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.15.0"
   platform:
     dependency: transitive
     description:
@@ -1416,7 +1432,7 @@ packages:
     source: hosted
     version: "3.1.3"
   uuid:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: uuid
       sha256: a5be9ef6618a7ac1e964353ef476418026db906c4facdedaa299b7a2e71690ff

pubspec.yaml

@@ -67,6 +67,9 @@ dependencies:
   flutter_expandable_fab: ^2.3.0
   dropdown_button2: ^2.3.9
   flutter_context_menu: ^0.2.0
+  dismissible_page: ^1.0.2
+  uuid: ^4.5.1
+  photo_view: ^0.15.0
 
 dev_dependencies:
   flutter_test: