flutter · nt4f04uNd · Feb 9, 2021 · Feb 24, 2021 · Feb 24, 2021
diff --git a/packages/camera/camera/CHANGELOG.md b/packages/camera/camera/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.8.1-nullsafety
+
+- Added freeze parameter to CameraPreview.
+
 ## 0.8.0-nullsafety.3
 
 * Updates the example code listed in the [README.md](README.md), so it runs without errors when you simply copy/ paste it into a Flutter App.

diff --git a/packages/camera/camera/lib/src/camera_preview.dart b/packages/camera/camera/lib/src/camera_preview.dart
@@ -11,11 +11,14 @@ import 'package:flutter/services.dart';
 /// A widget showing a live camera preview.
 class CameraPreview extends StatelessWidget {
   /// Creates a preview widget for the given camera controller.
-  const CameraPreview(this.controller, {this.child});
+  const CameraPreview(this.controller, {this.freeze, this.child});
 
   /// The controller for the camera that the preview is shown for.
   final CameraController controller;
 
+  /// When true the preview will not be updated with new frames.
+  final bool freeze;
+
   /// A widget to overlay on top of the camera preview
   final Widget? child;
 
@@ -31,8 +34,10 @@ class CameraPreview extends StatelessWidget {
               children: [
                 RotatedBox(
                   quarterTurns: _getQuarterTurns(),
-                  child:
-                      CameraPlatform.instance.buildPreview(controller.cameraId),
+                  child: CameraPlatform.instance.buildPreview(
+                    controller.cameraId,
+                    freeze: freeze,
+                  ),
                 ),
                 child ?? Container(),
               ],

diff --git a/packages/camera/camera/pubspec.yaml b/packages/camera/camera/pubspec.yaml
@@ -2,14 +2,14 @@ name: camera
 description: A Flutter plugin for getting information about and controlling the
   camera on Android and iOS. Supports previewing the camera feed, capturing images, capturing video,
   and streaming image buffers to dart.
-version: 0.8.0-nullsafety.3
+version: 0.8.1-nullsafety
 homepage: https://github.com/flutter/plugins/tree/master/packages/camera/camera
 
 dependencies:
   flutter:
     sdk: flutter
 
-  camera_platform_interface: ^2.0.0-nullsafety
+  camera_platform_interface: ^2.0.1-nullsafety
 
   pedantic: ^1.10.0
   quiver: ^3.0.0-nullsafety.3

diff --git a/packages/camera/camera_platform_interface/CHANGELOG.md b/packages/camera/camera_platform_interface/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.0.1-nullsafety
+
+- Added freeze parameter to buildPreview.
+
 ## 2.0.0-nullsafety
 
 - Migrate to null safety.

diff --git a/packages/camera/camera_platform_interface/lib/src/method_channel/method_channel_camera.dart b/packages/camera/camera_platform_interface/lib/src/method_channel/method_channel_camera.dart
@@ -400,8 +400,8 @@ class MethodChannelCamera extends CameraPlatform {
   }
 
   @override
-  Widget buildPreview(int cameraId) {
-    return Texture(textureId: cameraId);
+  Widget buildPreview(int cameraId, {bool freeze = false}) {
+    return Texture(textureId: cameraId, freeze: freeze);
   }
 
   /// Returns the flash mode as a String.

diff --git a/packages/camera/camera_platform_interface/lib/src/platform_interface/camera_platform.dart b/packages/camera/camera_platform_interface/lib/src/platform_interface/camera_platform.dart
@@ -236,7 +236,9 @@ abstract class CameraPlatform extends PlatformInterface {
   }
 
   /// Returns a widget showing a live camera preview.
-  Widget buildPreview(int cameraId) {
+  ///
+  /// When [freeze] is true the preview will not be updated with new frames.
+  Widget buildPreview(int cameraId, {bool freeze = false}) {
     throw UnimplementedError('buildView() has not been implemented.');
   }
 

diff --git a/packages/camera/camera_platform_interface/pubspec.yaml b/packages/camera/camera_platform_interface/pubspec.yaml
@@ -3,7 +3,7 @@ description: A common platform interface for the camera plugin.
 homepage: https://github.com/flutter/plugins/tree/master/packages/camera/camera_platform_interface
 # NOTE: We strongly prefer non-breaking changes, even at the expense of a
 # less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
-version: 2.0.0-nullsafety
+version: 2.0.1-nullsafety
 
 dependencies:
   flutter: