feat(chat): камера в шторке вложений — съёмка и живой предпросмотр

Плитка камеры делает снимок через системную камеру (image_picker) вместо заглушки «скоро появится». Когда доступ к камере выдан, плитка показывает живой предпросмотр с задней камеры (camera, CameraX) с корректным освобождением при сворачивании приложения; статус разрешения проверяется молча через permission_handler.
2026-08-15 16:02:33 +07:00
parent 40f170ca33
commit 615ce2caf1
9 changed files with 392 additions and 23 deletions
@@ -32,6 +32,35 @@ class PickedPhoto {
  const PickedPhoto({required this.item, this.editedFile});
 }

+class CameraGalleryItem implements GalleryItem {
+  final File file;
+  (int, int)? _dimensions;
+
+  CameraGalleryItem(this.file);
+
+  @override
+  String get id => file.path;
+
+  @override
+  bool get isVideo => false;
+
+  @override
+  Duration? get duration => null;
+
+  @override
+  File? get localFile => file;
+
+  @override
+  Future<Uint8List?> thumbnail(int size) => file.readAsBytes();
+
+  @override
+  Future<File?> originFile() async => file;
+
+  @override
+  Future<(int, int)?> dimensions() async =>
+      _dimensions ??= await imageFileDimensions(file);
+}
+
 Future<(int, int)?> imageFileDimensions(File file) async {
  ui.ImmutableBuffer? buffer;
  ui.ImageDescriptor? descriptor;
@@ -1,8 +1,11 @@
 import 'dart:io';

+import 'package:camera/camera.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:image_picker/image_picker.dart';
 import 'package:material_symbols_icons/symbols.dart';
+import 'package:permission_handler/permission_handler.dart';

 import 'package:komet/backend/modules/contacts.dart';
 import 'package:komet/core/config/app_frost.dart';
@@ -199,11 +202,17 @@ class _AttachmentSheetState extends State<AttachmentSheet> {
    );
  }

-  void _onCameraTap() {
-    showCustomNotification(
-      context,
-      AppLocalizations.of(context)!.attachSheetCameraComingSoon,
-    );
+  Future<void> _onCameraTap() async {
+    final l10n = AppLocalizations.of(context)!;
+    XFile? shot;
+    try {
+      shot = await ImagePicker().pickImage(source: ImageSource.camera);
+    } catch (_) {
+      if (mounted) showCustomNotification(context, l10n.attachSheetCameraError);
+      return;
+    }
+    if (shot == null || !mounted) return;
+    _openPreview(CameraGalleryItem(File(shot.path)));
  }

  void _sendSelection({GalleryItem? fallback}) {
@@ -873,34 +882,156 @@ class _KeepAlivePageState extends State<_KeepAlivePage>
  }
 }

-class _CameraTile extends StatelessWidget {
+class _CameraTile extends StatefulWidget {
  final VoidCallback onTap;
  final ColorScheme cs;

  const _CameraTile({required this.onTap, required this.cs});

+  @override
+  State<_CameraTile> createState() => _CameraTileState();
+}
+
+class _CameraTileState extends State<_CameraTile> with WidgetsBindingObserver {
+  CameraController? _controller;
+  bool _starting = false;
+
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addObserver(this);
+    _maybeStartPreview();
+  }
+
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    if (state == AppLifecycleState.resumed) {
+      _maybeStartPreview();
+    } else if (state == AppLifecycleState.inactive ||
+        state == AppLifecycleState.paused) {
+      _stopPreview();
+    }
+  }
+
+  Future<void> _maybeStartPreview() async {
+    if (_starting || _controller != null) return;
+    if (!(Platform.isAndroid || Platform.isIOS)) return;
+    if (!await Permission.camera.status.isGranted) return;
+    _starting = true;
+    try {
+      final cameras = await availableCameras();
+      if (cameras.isEmpty || !mounted) return;
+      final back = cameras.firstWhere(
+        (c) => c.lensDirection == CameraLensDirection.back,
+        orElse: () => cameras.first,
+      );
+      final controller = CameraController(
+        back,
+        ResolutionPreset.low,
+        enableAudio: false,
+      );
+      await controller.initialize();
+      if (!mounted) {
+        await controller.dispose();
+        return;
+      }
+      setState(() => _controller = controller);
+    } catch (_) {
+      // keep the fallback tile
+    } finally {
+      _starting = false;
+    }
+  }
+
+  void _stopPreview() {
+    final controller = _controller;
+    if (controller == null) return;
+    _controller = null;
+    controller.dispose();
+    if (mounted) setState(() {});
+  }
+
+  @override
+  void dispose() {
+    WidgetsBinding.instance.removeObserver(this);
+    _controller?.dispose();
+    super.dispose();
+  }
+
  @override
  Widget build(BuildContext context) {
+    final cs = widget.cs;
+    final controller = _controller;
+    final hasPreview = controller != null && controller.value.isInitialized;
+
    return GestureDetector(
-      onTap: onTap,
-      child: Container(
-        color: cs.surfaceContainerHighest,
-        alignment: Alignment.center,
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            Icon(
-              Symbols.photo_camera,
-              size: 34,
-              color: cs.onSurface,
-              weight: 400,
+      onTap: widget.onTap,
+      child: Stack(
+        fit: StackFit.expand,
+        children: [
+          if (hasPreview)
+            _buildPreview(controller)
+          else
+            Container(color: cs.surfaceContainerHighest),
+          if (hasPreview)
+            const DecoratedBox(
+              decoration: BoxDecoration(
+                gradient: LinearGradient(
+                  begin: Alignment.topCenter,
+                  end: Alignment.bottomCenter,
+                  colors: [Color(0x00000000), Color(0x66000000)],
+                ),
+              ),
            ),
-            const SizedBox(height: 6),
-            Text(
-              AppLocalizations.of(context)!.attachSheetCamera,
-              style: TextStyle(color: cs.onSurfaceVariant, fontSize: 12),
+          Align(
+            alignment: hasPreview ? Alignment.bottomLeft : Alignment.center,
+            child: Padding(
+              padding: const EdgeInsets.all(8),
+              child: hasPreview
+                  ? const Icon(
+                      Symbols.photo_camera,
+                      size: 22,
+                      color: Colors.white,
+                      weight: 500,
+                    )
+                  : Column(
+                      mainAxisSize: MainAxisSize.min,
+                      children: [
+                        Icon(
+                          Symbols.photo_camera,
+                          size: 34,
+                          color: cs.onSurface,
+                          weight: 400,
+                        ),
+                        const SizedBox(height: 6),
+                        Text(
+                          AppLocalizations.of(context)!.attachSheetCamera,
+                          style: TextStyle(
+                            color: cs.onSurfaceVariant,
+                            fontSize: 12,
+                          ),
+                        ),
+                      ],
+                    ),
            ),
-          ],
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildPreview(CameraController controller) {
+    final size = controller.value.previewSize;
+    if (size == null) {
+      return Container(color: widget.cs.surfaceContainerHighest);
+    }
+    return ClipRect(
+      child: FittedBox(
+        fit: BoxFit.cover,
+        child: SizedBox(
+          width: size.height,
+          height: size.width,
+          child: CameraPreview(controller),
        ),
      ),
    );
@@ -956,6 +956,7 @@
  "attachSheetGallery": "Gallery",
  "attachSheetPoll": "Poll",
  "attachSheetCameraComingSoon": "Camera is coming soon",
+  "attachSheetCameraError": "Couldn't open the camera",
  "attachSheetSendFileTitle": "Send a file",
  "attachSheetSendFileSubtitle": "A document, archive, or any other file",
  "attachSheetChooseFileButton": "Choose file",
@@ -4274,6 +4274,12 @@ abstract class AppLocalizations {
  /// **'Camera is coming soon'**
  String get attachSheetCameraComingSoon;

+  /// No description provided for @attachSheetCameraError.
+  ///
+  /// In en, this message translates to:
+  /// **'Couldn\'t open the camera'**
+  String get attachSheetCameraError;
+
  /// No description provided for @attachSheetSendFileTitle.
  ///
  /// In en, this message translates to:
@@ -2222,6 +2222,9 @@ class AppLocalizationsEn extends AppLocalizations {
  @override
  String get attachSheetCameraComingSoon => 'Camera is coming soon';

+  @override
+  String get attachSheetCameraError => 'Couldn\'t open the camera';
+
  @override
  String get attachSheetSendFileTitle => 'Send a file';

@@ -2235,6 +2235,9 @@ class AppLocalizationsRu extends AppLocalizations {
  @override
  String get attachSheetCameraComingSoon => 'Камера скоро появится';

+  @override
+  String get attachSheetCameraError => 'Не удалось открыть камеру';
+
  @override
  String get attachSheetSendFileTitle => 'Отправить файл';

@@ -721,6 +721,7 @@
  "attachSheetGallery": "Галерея",
  "attachSheetPoll": "Опрос",
  "attachSheetCameraComingSoon": "Камера скоро появится",
+  "attachSheetCameraError": "Не удалось открыть камеру",
  "attachSheetSendFileTitle": "Отправить файл",
  "attachSheetSendFileSubtitle": "Документ, архив или любой другой файл",
  "attachSheetChooseFileButton": "Выбрать файл",
@@ -129,6 +129,46 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "1.3.1"
+  camera:
+    dependency: "direct main"
+    description:
+      name: camera
+      sha256: "4142a19a38e388d3bab444227636610ba88982e36dff4552d5191a86f65dc437"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.11.4"
+  camera_android_camerax:
+    dependency: transitive
+    description:
+      name: camera_android_camerax
+      sha256: "8516fe308bc341a5067fb1a48edff0ddfa57c0d3cdcc9dbe7ceca3ba119e2577"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.30"
+  camera_avfoundation:
+    dependency: transitive
+    description:
+      name: camera_avfoundation
+      sha256: "11b4aee2f5e5e038982e152b4a342c749b414aa27857899d20f4323e94cb5f0b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.23+2"
+  camera_platform_interface:
+    dependency: transitive
+    description:
+      name: camera_platform_interface
+      sha256: "4524ca6eb4176b066864036ad4fe02c3e4863e63b77eadc21a5bf56824f43498"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.13.1"
+  camera_web:
+    dependency: transitive
+    description:
+      name: camera_web
+      sha256: "1245a480a113437f8d46d19c0fb90cea9db921436d9cf2ba5fb11854a1312693"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.5+4"
  characters:
    dependency: transitive
    description:
@@ -297,6 +337,38 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "8.3.7"
+  file_selector_linux:
+    dependency: transitive
+    description:
+      name: file_selector_linux
+      sha256: "2567f398e06ac72dcf2e98a0c95df2a9edd03c2c2e0cacd4780f20cdf56263a0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.4"
+  file_selector_macos:
+    dependency: transitive
+    description:
+      name: file_selector_macos
+      sha256: "5e0bbe9c312416f1787a68259ea1505b52f258c587f12920422671807c4d618a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.5"
+  file_selector_platform_interface:
+    dependency: transitive
+    description:
+      name: file_selector_platform_interface
+      sha256: "35e0bd61ebcdb91a3505813b055b09b79dfdc7d0aee9c09a7ba59ae4bb13dc85"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
+  file_selector_windows:
+    dependency: transitive
+    description:
+      name: file_selector_windows
+      sha256: "62197474ae75893a62df75939c777763d39c2bc5f73ce5b88497208bc269abfd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.3+5"
  firebase_core:
    dependency: "direct main"
    description:
@@ -717,6 +789,70 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "4.9.1"
+  image_picker:
+    dependency: "direct main"
+    description:
+      name: image_picker
+      sha256: d8402284df184bc05f4a2210c6c23983b0720f4cd87cbd05c5390a78af602667
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.3"
+  image_picker_android:
+    dependency: transitive
+    description:
+      name: image_picker_android
+      sha256: "6f3a1995eafb000333174fae92202622033b0ee7fd917a6cd3730295264df84a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.8.13+19"
+  image_picker_for_web:
+    dependency: transitive
+    description:
+      name: image_picker_for_web
+      sha256: "66257a3191ab360d23a55c8241c91a6e329d31e94efa7be9cf7a212e65850214"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.1"
+  image_picker_ios:
+    dependency: transitive
+    description:
+      name: image_picker_ios
+      sha256: b9c4a438a9ff4f60808c9cf0039b93a42bb6c2211ef6ebb647394b2b3fa84588
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.8.13+6"
+  image_picker_linux:
+    dependency: transitive
+    description:
+      name: image_picker_linux
+      sha256: "1f81c5f2046b9ab724f85523e4af65be1d47b038160a8c8deed909762c308ed4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2"
+  image_picker_macos:
+    dependency: transitive
+    description:
+      name: image_picker_macos
+      sha256: "86f0f15a309de7e1a552c12df9ce5b59fe927e71385329355aec4776c6a8ec91"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2+1"
+  image_picker_platform_interface:
+    dependency: transitive
+    description:
+      name: image_picker_platform_interface
+      sha256: "567e056716333a1647c64bb6bd873cff7622233a5c3f694be28a583d4715690c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.11.1"
+  image_picker_windows:
+    dependency: transitive
+    description:
+      name: image_picker_windows
+      sha256: d248c86554a72b5495a31c56f060cf73a41c7ff541689327b1a7dbccc33adfae
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2"
  intl:
    dependency: "direct main"
    description:
@@ -1116,6 +1252,54 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "2.3.0"
+  permission_handler:
+    dependency: "direct main"
+    description:
+      name: permission_handler
+      sha256: "59adad729136f01ea9e35a48f5d1395e25cba6cea552249ddbe9cf950f5d7849"
+      url: "https://pub.dev"
+    source: hosted
+    version: "11.4.0"
+  permission_handler_android:
+    dependency: transitive
+    description:
+      name: permission_handler_android
+      sha256: d3971dcdd76182a0c198c096b5db2f0884b0d4196723d21a866fc4cdea057ebc
+      url: "https://pub.dev"
+    source: hosted
+    version: "12.1.0"
+  permission_handler_apple:
+    dependency: transitive
+    description:
+      name: permission_handler_apple
+      sha256: "79dfa1df734798aa3cfdad166d3a3698c206d8813de13516ea1071b5d7e2f420"
+      url: "https://pub.dev"
+    source: hosted
+    version: "9.4.10"
+  permission_handler_html:
+    dependency: transitive
+    description:
+      name: permission_handler_html
+      sha256: "38f000e83355abb3392140f6bc3030660cfaef189e1f87824facb76300b4ff24"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.3+5"
+  permission_handler_platform_interface:
+    dependency: transitive
+    description:
+      name: permission_handler_platform_interface
+      sha256: eb99b295153abce5d683cac8c02e22faab63e50679b937fa1bf67d58bb282878
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.3.0"
+  permission_handler_windows:
+    dependency: transitive
+    description:
+      name: permission_handler_windows
+      sha256: "1a790728016f79a41216d88672dbc5df30e686e811ad4e698bfc51f76ad91f1e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.1"
  petitparser:
    dependency: transitive
    description:
@@ -1457,6 +1641,14 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "2.1.4"
+  stream_transform:
+    dependency: transitive
+    description:
+      name: stream_transform
+      sha256: ad47125e588cfd37a9a7f86c7d6356dde8dfe89d071d293f80ca9e9273a33871
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
  string_scanner:
    dependency: transitive
    description:
@@ -54,6 +54,9 @@ dependencies:
  flutter_timezone: ^5.0.1
  timezone: ^0.11.0
  file_picker: ^8.0.0
+  image_picker: ^1.1.2
+  camera: ^0.11.0
+  permission_handler: ^11.3.1
  archive: ^4.0.9
  geolocator: ^13.0.0
  photo_manager: ^3.0.0