CamerAwesome

https://docs.page/Apparence-io/camera_awesome
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CamerAwesome is a highly customizable Flutter camera plugin that provides a rich, out-of-the-box UI...
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### Configure Awesome UI Camera Properties

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/awesome-ui

Example configuration for top actions, filters, and theme-related properties within the camera widget.

```dart
              splashColor: Colors.deepPurple,
              highlightColor: Colors.deepPurpleAccent.withValues(alpha: 0.5),
              onTap: onTap,
              child: child,
            ),
          ),
        );
      },
    ),
  ),
  // Top actions (flash, timer...)
  topActionsBuilder: (state) {
    return AwesomeTopActions(state: state);
  },
  // default filter
  defaultFilter: AwesomeFilter.None,
  // list of photo filters (default to awesome filter) 
  // put null or empty list for hiding filters 
  availableFilters: awesomePresetFiltersList,
)
```

--------------------------------

### Setup Camera Preview with Analysis Stream

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/image_format_conversions

Uses a StreamController to pipe AnalysisImage data into a custom display widget within a CameraAwesomeBuilder.

```dart
class CameraPage extends StatefulWidget {
  const CameraPage({super.key});

  @override
  State<CameraPage> createState() => _CameraPageState();
}

class _CameraPageState extends State<CameraPage> {
  // 1.
  final _imageStreamController = StreamController<AnalysisImage>();

  @override
  void dispose() {
    _imageStreamController.close();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      // 2.
      body: CameraAwesomeBuilder.analysisOnly(
        sensorConfig: SensorConfig.single(
          sensor: Sensor.position(SensorPosition.front),
          aspectRatio: CameraAspectRatios.ratio_1_1,
        ),
        // 3.
        onImageForAnalysis: (img) async => _imageStreamController.add(img),
        imageAnalysisConfig: AnalysisConfig(
          androidOptions: const AndroidAnalysisOptions.yuv420(
            width: 150,
          ),
          maxFramesPerSecond: 30,
        ),
        builder: (state, previewSize, previewRect) {
          // 4.
          return CameraPreviewDisplayer(
            analysisImageStream: _imageStreamController.stream,
          );
        },
      ),
    );
  }
}
```

--------------------------------

### Install MLKit Face Detection

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/detecting_faces

Add the required dependency to your pubspec.yaml file.

```dart
google_mlkit_face_detection: ^0.5.5
```

--------------------------------

### Customizing AwesomeTopActions

Source: https://docs.page/Apparence-io/camera_awesome/widgets/layout

Examples of how to use and customize the top actions row, including conditional rendering based on camera state.

```dart
AwesomeTopActions(
    // CameraState is required
    state: state,
    // Add your own children
    children: [
        MyFirstWidget(state: state),
        MySecondWidget(state: state),
    ],
    // Override default padding
    padding: const EdgeInsets.all(8),
)
```

```dart
AwesomeTopActions(
  // CameraState is required
  state: state,
  // Add your own children
  children: state is PhotoCameraState
      ? [
          MyFirstWidget(state: state),
          MySecondWidget(state: state),
        ]
      : [
          MyThirdWidget(state: state),
        ],
  // Override default padding
  padding: const EdgeInsets.all(8),
)
```

--------------------------------

### Example of dependency conflict error

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/installing

An example of an error message that might occur due to dependency conflicts.

```text
java.lang.IncompatibleClassChangeError: Found interface com.google.android.gms.location.ActivityRecognitionClient, but class was expected
```

--------------------------------

### Implement a Custom photoPathBuilder

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/awesome-ui

Define a custom path for saved photos using path_provider. This example handles both single and multiple sensor capture requests.

```dart
SaveConfig.photoAndVideo(
  photoPathBuilder: (sensors) async {
    // 1.
    final Directory extDir = await getTemporaryDirectory();
    final testDir = await Directory('${extDir.path}/camerawesome').create(recursive: true);

    // 2.
    if (sensors.length == 1) {
      final String filePath =
          '${testDir.path}/${DateTime.now().millisecondsSinceEpoch}.jpg';
      // 3.
      return SingleCaptureRequest(filePath, sensors.first);
    } else {
      // 4.
      return MultipleCaptureRequest(
        {
          for (final sensor in sensors)
            sensor:
                '${testDir.path}/${sensor.position == SensorPosition.front ? 'front_' : "back_"}${DateTime.now().millisecondsSinceEpoch}.jpg',
        },
      );
    }
  },
  // Other params
  ...
)
```

--------------------------------

### Customize UI Layout with Builders

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/awesome-ui

Use topActionsBuilder, middleContentBuilder, and bottomActionsBuilder to define custom widgets for specific UI areas. The example demonstrates applying a custom theme and injecting specific widgets like filters and buttons.

```dart
CameraAwesomeBuilder.awesome(
  // Other parameters
  ...
  // Set an AwesomeTheme that you might reuse in your UI
  theme: AwesomeTheme(
    bottomActionsBackgroundColor: Colors.cyan.withValues(alpha: 0.5),
    buttonTheme: AwesomeButtonTheme(
      backgroundColor: Colors.cyan.withValues(alpha: 0.5),
      iconSize: 20,
      foregroundColor: Colors.white,
      padding: const EdgeInsets.all(16),
      // Tap visual feedback (ripple, bounce...)
      buttonBuilder: (child, onTap) {
        return ClipOval(
          child: Material(
            color: Colors.transparent,
            shape: const CircleBorder(),
            child: InkWell(
              splashColor: Colors.cyan,
              highlightColor: Colors.cyan.withValues(alpha: 0.5),
              onTap: onTap,
              child: child,
            ),
          ),
        );
      },
    ),
  ),
  // Show the filter button on the top part of the screen
  topActionsBuilder: (state) => AwesomeTopActions(
    padding: EdgeInsets.zero,
    state: state,
    children: [
      Expanded(
        child: AwesomeFilterWidget(
          state: state,
          filterListPosition: FilterListPosition.aboveButton,
          filterListPadding: const EdgeInsets.only(top: 8),
        ),
      ),
    ],
  ),
  // Show some Text with same background as the bottom part
  middleContentBuilder: (state) {
    return Column(
      children: [
        const Spacer(),
        // Use a Builder to get a BuildContext below AwesomeThemeProvider widget
        Builder(builder: (context) {
          return Container(
            // Retrieve your AwesomeTheme's background color
            color: AwesomeThemeProvider.of(context)
                .theme
                .bottomActionsBackgroundColor,
            child: const Align(
              alignment: Alignment.bottomCenter,
              child: Padding(
                padding: EdgeInsets.only(bottom: 10, top: 10),
                child: Text(
                  "Take your best shot!",
                  style: TextStyle(
                    color: Colors.white,
                    fontWeight: FontWeight.bold,
                    fontStyle: FontStyle.italic,
                  ),
                ),
              ),
            ),
          );
        }),
      ],
    );
  },
  // Show Flash button on the left and Camera switch button on the right
  bottomActionsBuilder: (state) => AwesomeBottomActions(
    state: state,
    left: AwesomeFlashButton(
      state: state,
    ),
    right: AwesomeCameraSwitchButton(
      state: state,
      scale: 1.0,
      onSwitchTap: (state) {
        state.switchCameraSensor(
          aspectRatio: state.sensorConfig.aspectRatio,
        );
      },
    ),
  ),
)
```

--------------------------------

### Initialize CameraAwesome UI

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/awesome-ui

Use CameraAwesomeBuilder.awesome to launch the full camera interface. The onMediaTap callback is used here to open captured media with the better_open_file package.

```dart
CameraAwesomeBuilder.awesome(
  saveConfig: SaveConfig.photoAndVideo(),
  onMediaTap: (mediaCapture) {
    OpenFile.open(mediaCapture.filePath);
  },
)
```

--------------------------------

### Configure iOS permissions

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/installing

Add required camera, microphone, and location usage descriptions to the Info.plist file.

```xml
<key>NSCameraUsageDescription</key>
<string>Your own description</string>

<key>NSMicrophoneUsageDescription</key>
<string>To enable microphone access when recording video</string>

<key>NSLocationWhenInUseUsageDescription</key>
<string>To enable GPS location access for Exif data</string>
```

--------------------------------

### Toggling Image Analysis

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/reading_barcodes

Use the start and stop methods on the AnalysisController to dynamically enable or disable image analysis.

```dart
CheckboxListTile(
    value: widget.analysisController.enabled,
    onChanged: (_) async {
        // 1.
        if (widget.analysisController?.enabled == true) {
          // 2.
          await widget.analysisController.stop();
        } else {
          // 3.
          await widget.analysisController.start();
        }
        setState(() {});
    },
    title: Text("Enable barcode scan"),
)
```

--------------------------------

### Apply a custom theme to CamerAwesome

Source: https://docs.page/Apparence-io/camera_awesome/widgets/theming

Configure the appearance of built-in widgets by passing an AwesomeTheme instance to the CameraAwesomeBuilder.awesome constructor.

```dart
CameraAwesomeBuilder.awesome(
  theme: AwesomeTheme(
    // Background color of the bottom actions
    bottomActionsBackgroundColor: Colors.deepPurple.withValues(alpha: 0.5),
    // Buttons theme
    buttonTheme: AwesomeButtonTheme(
      // Background color of the button
      backgroundColor: Colors.deepPurple.withValues(alpha: 0.5),
      // Size of the icon
      iconSize: 32,
      // Padding around the icon
      padding: const EdgeInsets.all(18),
      // Color of the icon
      foregroundColor: Colors.lightBlue,
      // Tap visual feedback (ripple, bounce...)
      buttonBuilder: (child, onTap) {
        return ClipOval(
          child: Material(
            color: Colors.transparent,
            shape: const CircleBorder(),
            child: InkWell(
              splashColor: Colors.deepPurple,
              highlightColor: Colors.deepPurpleAccent.withValues(alpha: 0.5),
              onTap: onTap,
              child: child,
            ),
          ),
        );
      },
    ),
  ),
);
```

--------------------------------

### Configure multiple cameras with CameraAwesomeBuilder

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/multicam

Use SensorConfig.multiple to define a list of sensors for concurrent camera access.

```dart
CameraAwesomeBuilder.awesome(
    // 1.
    sensorConfig: SensorConfig.multiple(
        // 2.
        sensors: [
            Sensor.position(SensorPosition.back),
            Sensor.position(SensorPosition.front),
        ],
        // 3.
        flashMode: FlashMode.auto,
        aspectRatio: CameraAspectRatios.ratio_16_9,
    ),
    // Other params
)
```

--------------------------------

### Configure initial camera settings

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/awesome-ui

Use SensorConfig to define aspect ratio, flash mode, sensor position, and zoom level during initialization.

```dart
CameraAwesomeBuilder.awesome(
  sensorConfig: SensorConfig.single(
    aspectRatio: CameraAspectRatios.ratio_4_3,
    flashMode: FlashMode.auto,
    sensor: Sensor.position(SensorPosition.back),
    zoom: 0.0,
  ),
)
```

--------------------------------

### Configure CamerAwesome for Barcode Analysis

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/reading_barcodes

Set up the CameraAwesomeBuilder with an AnalysisConfig and image processing callback.

```dart
// 1.
CameraAwesomeBuilder.previewOnly(
  // 2.
  imageAnalysisConfig: AnalysisConfig(
    androidOptions: const AndroidAnalysisOptions.nv21(
      width: 1024,
    ),
    maxFramesPerSecond: 5,
    autoStart: false,
  ),
  // 3.
  onImageForAnalysis: (img) => _processImageBarcode(img),
  // 4.
  builder: (cameraModeState, preview) {
    return _BarcodeDisplayWidget(
      barcodesStream: _barcodesStream,
      scrollController: _scrollController,
      // 5.
      analysisController: cameraModeState.analysisController!,
    );
  },
)
```

--------------------------------

### Configure CameraAwesomeBuilder with custom parameters

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/awesome-ui

Use this builder to define the camera UI, behavior, and configuration. Ensure all required builders and path providers are implemented to handle media capture and preview interactions.

```dart
CameraAwesomeBuilder.awesome(
  // Bottom actions (take photo, switch camera...)
  bottomActionsBuilder: (state) {
    return AwesomeBottomActions(
      state: state,
      onMediaTap: _handleMediaTap,
    );
  },
  // Clicking on volume buttons will capture photo/video depending on the current mode
  enablePhysicalButton: true,
  // Filter to apply on the preview
  filter: AwesomeFilter.AddictiveRed,
   // Image analysis configuration
  imageAnalysisConfig: AnalysisConfig(
        androidOptions: const AndroidAnalysisOptions.nv21(
            width: 1024,
        ),
        autoStart: true,
  ),
  // Middle content (filters, photo/video switcher...)
  middleContentBuilder: (state) {
    // Use this to add widgets on the middle of the preview
    return Column(
      children: [
        const Spacer(),
        AwesomeFilterWidget(state: state),
        Builder(
          builder: (context) => Container(
            color: AwesomeThemeProvider.of(context)
                .theme
                .bottomActionsBackgroundColor,
            height: 8,
          ),
        ),
        AwesomeCameraModeSelector(state: state),
      ],
    );
  },
  // Handle image analysis
  onImageForAnalysis: (analysisImage) {
    // Do some stuff with the image (see example)
    return processImage(analysisImage);
  },
  onMediaTap: (mediaCapture) {
    // Hande tap on the preview of the last media captured
    print('Tap on ${mediaCapture.filePath}');
  },
  // Handle gestures on the preview, such as tap to focus or scale to zoom
  onPreviewTapBuilder: (state) => OnPreviewTap(
    onTap: (position, flutterPreviewSize, pixelPreviewSize) {
      // Handle tap to focus (default) or take a photo for instance
      // ...
    },
    onTapPainter: (position) {
      // Tap feedback, here we just show a circle
      return Positioned(
        left: position.dx - 25,
        top: position.dy - 25,
        child: IgnorePointer(
          child: Container(
            decoration: BoxDecoration(
              shape: BoxShape.circle,
              border: Border.all(color: Colors.white, width: 2),
            ),
            width: 50,
            height: 50,
          ),
        ),
      );
    },
    // Duration during which the feedback should be shown
    tapPainterDuration: const Duration(seconds: 2),
  ),
  // Handle scale gestures on the preview
  onPreviewScaleBuilder: (state) => OnPreviewScale(
    onScale: (scale) {
      // Do something with the scale value, set zoom for instance
      state.sensorConfig.setZoom(scale);
    },
  ),
  // Alignment of the preview
  previewAlignment: Alignment.center,
    // Add your own decoration on top of the preview
  previewDecoratorBuilder: (state, preview) {
    // This will be shown above the preview (in a Stack)
    // It could be used in combination with MLKit to draw filters on faces for example
    return PreviewDecorationWiget(preview.rect);
  },
  // Preview fit of the camera
  previewFit: CameraPreviewFit.fitWidth,
  // Padding around the preview
  previewPadding: const EdgeInsets.all(20),
  // Show a progress indicator while loading the camera
  progressIndicator: const Center(
    child: SizedBox(
      width: 100,
      height: 100,
      child: CircularProgressIndicator(),
    ),
  ),
   // Define if you want to take photos, videos or both and where to save them
  saveConfig: SaveConfig.photoAndVideo(
    initialCaptureMode: CaptureMode.photo,
    mirrorFrontCamera: true,
    photoPathBuilder: (sensors) async {
      // Return a valid file path (must be a jpg file)
      return SingleCaptureRequest('some/image/file/path.jpg', sensors.first);
    },
    videoPathBuilder: (sensors) async {
      // Return a valid file path (must be a mp4 file)
      return SingleCaptureRequest('some/image/file/path.mp4', sensors.first);
    },
  ),
  // Sensor initial configuration
  sensorConfig: SensorConfig.single(
    aspectRatio: CameraAspectRatios.ratio_4_3,
    flashMode: FlashMode.auto,
    sensor: Sensor.position(SensorPosition.back),
    zoom: 0.0,
  ),
  // CamerAwesome theme used to customize the built-in UI
  theme: AwesomeTheme(
    // Background color of the bottom actions
    bottomActionsBackgroundColor: Colors.deepPurple.withValues(alpha: 0.5),
    // Buttons theme
    buttonTheme: AwesomeButtonTheme(
      // Background color of the buttons
      backgroundColor: Colors.deepPurple.withValues(alpha: 0.5),
      // Buttons icon size
      iconSize: 32,
      // Padding around icons
      padding: const EdgeInsets.all(18),
      // Buttons icon color
      foregroundColor: Colors.lightBlue,
      // Tap visual feedback (ripple, bounce...)
      buttonBuilder: (child, onTap) {
        return ClipOval(
          child: Material(
            color: Colors.transparent,
            shape: const CircleBorder(),
            child: InkWell(

```

--------------------------------

### Implement a custom camera UI with CameraAwesomeBuilder.custom

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/custom-ui

Use the builder property to return a custom widget based on the current camera state. The camera preview is automatically rendered behind the returned widget.

```dart
CameraAwesomeBuilder.custom(
  saveConfig: SaveConfig.photoAndVideo(),
  builder: (cameraState, preview) {
    // Return your UI (a Widget)
    return cameraState.when(
      onPreparingCamera: (state) => const Center(child: CircularProgressIndicator()),
      onPhotoMode: (state) => TakePhotoUI(state),
      onVideoMode: (state) => RecordVideoUI(state, recording: false),
      onVideoRecordingMode: (state) => RecordVideoUI(state, recording: true),
    );
  },
)
```

--------------------------------

### Configure CamerAwesome for Face Analysis

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/detecting_faces

Set up the CameraAwesomeBuilder to process image frames for analysis while providing a custom preview decorator.

```dart
// 1.
CameraAwesomeBuilder.previewOnly(
  // 2.
  previewFit: CameraPreviewFit.contain,
  sensorConfig: SensorConfig.single(
    sensor: Sensor.position(SensorPosition.front),
    aspectRatio: CameraAspectRatios.ratio_1_1,
  ),
  // 3.
  onImageForAnalysis: (img) => _analyzeImage(img),
  // 4.
  imageAnalysisConfig: AnalysisConfig(
    androidOptions: const AndroidAnalysisOptions.nv21(
      width: 250,
    ),
    maxFramesPerSecond: 5, // depending on your phone performances
  ),
  // 5.
  builder: (state, previewSize, previewRect) {
    return _MyPreviewDecoratorWidget(
      cameraState: state,
      faceDetectionStream: _faceDetectionController,
      previewSize: previewSize,
      previewRect: previewRect,
    );
  },
)
```

--------------------------------

### Implement BarcodePreviewOverlay Build Method

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/reading_barcodes

The build method uses IgnorePointer to pass touch events through to the camera and positions UI elements relative to the previewRect.

```dart
// 1.
IgnorePointer(
  ignoring: true,
  child: Padding(
    // 2.
    padding: EdgeInsets.only(
      top: widget.previewRect.top,
      left: widget.previewRect.left,
      right: _screenSize.width - widget.previewRect.right,
      bottom: _screenSize.height - widget.previewRect.bottom,
    ),
    child: Stack(children: [
      // 3.
      Positioned.fill(
        child: CustomPaint(
          painter: BarcodeFocusAreaPainter(
            scanArea: _scanArea.size,
            barcodeRect: _barcodeRect,
            canvasScale: _canvasScale,
            canvasTranslate: _canvasTranslate,
          ),
        ),
      ),
      // 4.
      Positioned(
        // 5.
        top: widget.previewSize.height / 2 + _scanArea.size.height / 2 + 10,
        left: 0,
        right: 0,
        child: Column(children: [
          Text(
            _barcodeRead ?? "",
            textAlign: TextAlign.center,
            style: const TextStyle(
              color: Colors.white,
              fontSize: 20,
            ),
          ),
          if (_barcodeInArea != null)
            Container(
              margin: const EdgeInsets.only(top: 8),
              color: _barcodeInArea! ? Colors.green : Colors.red,
              child: Text(
                _barcodeInArea! ? "Barcode in area" : "Barcode not in area",
                textAlign: TextAlign.center,
                style: const TextStyle(
                  color: Colors.white,
                  fontSize: 20,
                ),
              ),
            ),
        ]),
      ),
    ]),
  ),
)
```

--------------------------------

### Implement AwesomeAspectRatioButton

Source: https://docs.page/Apparence-io/camera_awesome/widgets/awesome_buttons

Configures a button to toggle between different camera aspect ratios.

```dart
AwesomeAspectRatioButton(
  state: state,
  // Custom icon builder
  iconBuilder: (aspectRatio) {
    switch (aspectRatio) {
      case CameraAspectRatios.ratio_16_9:
        return const Icon(Icons.crop_16_9);
      case CameraAspectRatios.ratio_4_3:
        return const Icon(Icons.crop_7_5);
      case CameraAspectRatios.ratio_1_1:
        return const Icon(Icons.crop_square);
      default:
        return const SizedBox();
    }
  },
  // You can provide a custom theme to the button. If you don't, it will use the theme from CameraAwesomeBuilder
  theme: AwesomeTheme(
    buttonTheme: AwesomeButtonTheme(
      iconSize: 28,
      padding: const EdgeInsets.all(8),
      foregroundColor: Colors.black,
      backgroundColor: Colors.white,
    ),
  ),
  onAspectRatioTap: (sensorConfig, aspectRatio) {
    // Do something custom
    doSomething();

    // Set the aspect ratio
    sensorConfig.setAspectRatio(aspectRatio);
  },
)
```

--------------------------------

### Configure iOS Podfile for Preview-Only Mode

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/image_analysis_configuration

Add this to the Podfile to remove microphone API usage when only using preview mode on iOS.

```ruby
post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)
    
    # ADD THE NEXT SECTION
    target.build_configurations.each do |config|
      config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
        '$(inherited)',
        'AUDIO_SESSION_MICROPHONE=0'
      ]
    end
    
  end
end
```

--------------------------------

### Initialize BarcodeScanner

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/reading_barcodes

Create a BarcodeScanner instance with specified formats.

```dart
final _barcodeScanner = BarcodeScanner(formats: [BarcodeFormat.all]);
```

--------------------------------

### Implement AwesomeCameraSwitchButton

Source: https://docs.page/Apparence-io/camera_awesome/widgets/awesome_buttons

Configures a button to switch between front and back cameras with custom themes and behavior.

```dart
AwesomeCameraSwitchButton(
  // Current CameraState
  state: state,
  // You can set a scale value for this button to make it look smaller or bigger than the other ones
  scale: 1.5,
  // You can provide a custom theme to the button. If you don't, it will use the theme from CameraAwesomeBuilder
  theme: AwesomeTheme(
    buttonTheme: AwesomeButtonTheme(
      iconSize: 28,
      padding: const EdgeInsets.all(8),
      foregroundColor: Colors.black,
      backgroundColor: Colors.white,
    ),
  ),
  // Change the switch camera behaviour logic
  onSwitchTap: (state) {
    // Aspect ratio is reset by default when switching cameras (it goes back to 4:3).
    // You can change this behaviour by overriding the aspect ratio in the switchCameraSensor method.
    state.switchCameraSensor(
      aspectRatio: state.sensorConfig.aspectRatio,
    );
  },
  // Set the icon you want to display for the switch camera button
  iconBuilder: () {
    return MyCustomIcon();
  },
)
```

--------------------------------

### Implement AwesomeCaptureButton

Source: https://docs.page/Apparence-io/camera_awesome/widgets/awesome_buttons

Provides a simple capture button for photo or video modes.

```dart
AwesomeCaptureButton(state: state)
```

--------------------------------

### CameraState API

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/custom-ui

General methods and properties available to all CameraState instances.

```APIDOC
## CameraState Methods

- `state.switchCameraSensor()`: Switch between FRONT and BACK camera.
- `state.sensorConfig`: Get current Sensor configuration.
- `state.sensorConfig$`: Stream of current Sensor configuration.
- `state.saveConfig`: Get original SaveConfig.
```

--------------------------------

### Implement Preview Decorator Widget for Face Detection

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/detecting_faces

Uses a StreamBuilder to listen to camera sensor configuration and face detection results, applying necessary canvas transformations before painting.

```dart
class _MyPreviewDecoratorWidget extends StatelessWidget {
  final CameraState cameraState;
  final Stream<FaceDetectionModel> faceDetectionStream;
  final Preview preview;

  const _MyPreviewDecoratorWidget({
    required this.cameraState,
    required this.faceDetectionStream,
    required this.preview,
  });

  @override
  Widget build(BuildContext context) {
    return IgnorePointer(
      child: StreamBuilder(
        // 1.
        stream: cameraState.sensorConfig$,
        builder: (_, snapshot) {
          if (!snapshot.hasData) {
            return const SizedBox();
          } else {
            return StreamBuilder<FaceDetectionModel>(
              // 2.
              stream: faceDetectionStream,
              builder: (_, faceModelSnapshot) {
                if (!faceModelSnapshot.hasData) return const SizedBox();
                // this is the transformation needed to convert the image to the preview
                // Android mirrors the preview but the analysis image is not
                final canvasTransformation = faceModelSnapshot.data!.img
                    ?.getCanvasTransformation(preview);
                // 3.
                return CustomPaint(
                  painter: FaceDetectorPainter(
                    model: faceModelSnapshot.requireData,
                    canvasTransformation: canvasTransformation,
                    preview: preview,
                  ),
                );
              },
            );
          }
        },
      ),
    );
  }
}
```

--------------------------------

### Configure Android SDK version

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/installing

Set the minimum SDK version to 21 or higher in the app-level build.gradle file.

```text
minSdkVersion 21
```

--------------------------------

### Check multi-camera support

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/multicam

Verify if the current device supports concurrent camera features before initialization.

```dart
final isSupported = await CamerawesomePlugin.isMultiCamSupported()
```

--------------------------------

### SensorConfig Constructor Definition

Source: https://docs.page/Apparence-io/camera_awesome/widgets/awesome_buttons

Displays the default configuration parameters for the camera sensor.

```dart
 SensorConfig({
  required this.sensor,
  FlashMode flash = FlashMode.none,
  SensorType type = SensorType.wideAngle,
  this.captureDeviceId,
  CameraAspectRatios aspectRatio = CameraAspectRatios.ratio_4_3,
  double currentZoom = 0.0,
})
```

--------------------------------

### Add dependency to pubspec.yaml

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/installing

Include the camerawesome package in your project's dependencies.

```yaml
dependencies:
    camerawesome: ^2.0.0
    ...
```

--------------------------------

### Implement AwesomeLocationButton

Source: https://docs.page/Apparence-io/camera_awesome/widgets/awesome_buttons

Configures a button to toggle GPS metadata saving for captured photos.

```dart
AwesomeLocationButton(
  // Current CameraState
  state: state,
  // Change the icon based on saveGpsLocation
  iconBuilder: (saveGpsLocation) {
    if (saveGpsLocation) {
      return const Icon(Icons.location_pin);
    } else {
      return const Icon(Icons.location_off_outlined);
    }
  },
  // You can provide a custom theme to the button. If you don't, it will use the theme from CameraAwesomeBuilder
  theme: AwesomeTheme(
    buttonTheme: AwesomeButtonTheme(
      iconSize: 28,
      padding: const EdgeInsets.all(8),
      foregroundColor: Colors.black,
      backgroundColor: Colors.white,
    ),
  ),
  // Change the location button behaviour logic
  onLocationTap: (state, saveGpsLocation) {
    // Your custom logic
    doSomethingCustom();

    // Default logic
    state.shouldSaveGpsLocation(saveGpsLocation);
  },
)
```

--------------------------------

### AwesomeAspectRatioButton

Source: https://docs.page/Apparence-io/camera_awesome/widgets/awesome_buttons

A button widget to cycle through supported camera aspect ratios (4:3, 16:9, 1:1).

```APIDOC
## AwesomeAspectRatioButton

### Description
A button that allows users to change the aspect ratio of the camera. Supported ratios are 4:3, 16:9, and 1:1.

### Parameters
- **state** (CameraState) - Required - The current camera state.
- **iconBuilder** (Function) - Optional - Builder to provide custom icons based on the current aspect ratio.
- **theme** (AwesomeTheme) - Optional - Custom theme configuration.
- **onAspectRatioTap** (Function) - Optional - Callback to execute custom logic when the button is tapped.
```

--------------------------------

### CameraAwesomeBuilder.custom

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/custom-ui

The custom constructor allows you to define a custom UI builder while the camera preview remains visible behind your widgets.

```APIDOC
## CameraAwesomeBuilder.custom

### Description
Creates a custom camera interface by providing a builder function that receives the current camera state and the preview widget.

### Parameters
- **saveConfig** (SaveConfig) - Required - Defines photo/video capture settings and storage locations.
- **builder** (Function) - Required - A function that returns a Widget based on the current camera state (onPreparingCamera, onPhotoMode, onVideoMode, onVideoRecordingMode).

### Example
```dart
CameraAwesomeBuilder.custom(
  saveConfig: SaveConfig.photoAndVideo(),
  builder: (cameraState, preview) {
    return cameraState.when(
      onPreparingCamera: (state) => const Center(child: CircularProgressIndicator()),
      onPhotoMode: (state) => TakePhotoUI(state),
      onVideoMode: (state) => RecordVideoUI(state, recording: false),
      onVideoRecordingMode: (state) => RecordVideoUI(state, recording: true),
    );
  },
)
```
```

--------------------------------

### Configure image analysis with AnalysisConfig

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/image_analysis_configuration

Use AnalysisConfig to define platform-specific settings, frame rates, and auto-start behavior for image analysis streams.

```dart
CameraAwesomeBuilder.awesome(
    // Other parameters...
    onImageForAnalysis: (AnalysisImage img) {
        // Handle image analysis
    },
    imageAnalysisConfig: AnalysisConfig(
        // 1.
        androidOptions: const AndroidAnalysisOptions.nv21(
            width: 250,
        ),
        // 2.
        autoStart: true,
        // 3.
        cupertinoOptions: const CupertinoAnalysisOptions.bgra8888(),
        // 4.
        maxFramesPerSecond: 20,
    ),
)
```

--------------------------------

### Update CameraAwesomeBuilder configuration

Source: https://docs.page/Apparence-io/camera_awesome/migration_guides/from_1_to_2

Migrate from legacy flat configuration parameters to the new SensorConfig and SaveConfig structures.

```diff
CameraAwesomeBuilder.awesome(
-   sensor: Sensors.back,
-   flashMode: FlashMode.auto,
-   aspectRatio: CameraAspectRatios.ratio_4_3,
-   mirrorFrontCamera: true,
-   zoom: 0.0,
+   sensorConfig: SensorConfig.single(
+       sensor: Sensor.position(SensorPosition.back),
+       flashMode: FlashMode.auto,
+       aspectRatio: CameraAspectRatios.ratio_4_3,
+       zoom: 0.0,
+   ),
-   exifPreferences: ExifPreferences(saveGPSLocation: true),
-   enableAudio: true,
    saveConfig: SaveConfig.photoAndVideo(
        initialCaptureMode: CaptureMode.photo,
+       photoPathBuilder: (sensors) async {
+         final Directory extDir = await getTemporaryDirectory();
+         final testDir = await Directory(
+           '${extDir.path}/camerawesome',
+         ).create(recursive: true);
+         if (sensors.length == 1) {
+           final String filePath =
+               '${testDir.path}/${DateTime.now().millisecondsSinceEpoch}.jpg';
+           return SingleCaptureRequest(filePath, sensors.first);
+         } else {
+           // Separate pictures taken with front and back camera
+           return MultipleCaptureRequest(
+             {
+               for (final sensor in sensors)
+                 sensor:
+                     '${testDir.path}/${sensor.position == SensorPosition.front ? 'front_' : "back_"}${DateTime.now().millisecondsSinceEpoch}.jpg',
+             },
+           );
+         }
+       },
+       videoPathBuilder: (sensors) async {
+           // same logic as photoPathBuilder
+       },
+       videoOptions: VideoOptions(
+         enableAudio: true,
+         ios: CupertinoVideoOptions(
+           fps: 10,
+         ),
+         android: AndroidVideoOptions(
+           bitrate: 6000000,
+           quality: VideoRecordingQuality.fhd,
+           fallbackStrategy: QualityFallbackStrategy.lower,
+         ),
+       ),
+       exifPreferences: ExifPreferences(saveGPSLocation: true),
+       mirrorFrontCamera: true,
     ),
    ...
)
```

--------------------------------

### Configure SaveConfig for Media Capture

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/awesome-ui

Customize capture behavior including initial modes, file paths, video quality settings, and EXIF preferences.

```dart
SaveConfig.photoAndVideo(
  // 1.
  initialCaptureMode: CaptureMode.photo,
  // 2.
  photoPathBuilder: (sensors) async {
    ...
  },
  // 3.
  videoPathBuilder: (sensors) async {
    ...
  },
  // 4.
  videoOptions: VideoOptions(
    enableAudio: true,
    ios: CupertinoVideoOptions(
      fps: 10,
      // TODODOC Add other possble params
    ),
    android: AndroidVideoOptions(
      bitrate: 6000000,
      quality: VideoRecordingQuality.fhd,
      fallbackStrategy: QualityFallbackStrategy.lower,
    ),
  ),
  // 5.
  exifPreferences: ExifPreferences(saveGPSLocation: true),
  // 6.
  mirrorFrontCamera: true,
)
```

--------------------------------

### Adjust Camera Preview Positioning

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/awesome-ui

Configure the camera preview area using previewPadding and previewAlignment parameters.

```dart
CameraAwesomeBuilder.awesome(
  previewPadding: const EdgeInsets.all(20),
  previewAlignment: Alignment.center,
  // Other parameters
  ...
)
```

--------------------------------

### Configure Picture-in-Picture Preview

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/multicam

Use the pictureInPictureConfigBuilder to return a PictureInPictureConfig object for each sensor, allowing for custom positioning, interaction, and UI rendering.

```dart
CameraAwesomeBuilder.awesome(
 pictureInPictureConfigBuilder: (index, sensor) {
      const width = 200.0;
      return PictureInPictureConfig(
        // 1.
        isDraggable: false,
        // 2.
        startingPosition: Offset(
          screenSize.width - width - 20.0 * index,
          screenSize.height - 356,
        ),
        // 3.
        sensor: sensor,
        // 4.
        onTap: (){
          print('on preview tap');
        },
        // 5.
        pictureInPictureBuilder: (preview, aspectRatio) {
          return SizedBox(
            width: width,
            height: width,
            child: ClipPath(
              clipper: _MyCustomPipClipper(
                width: width,
                height: width * aspectRatio,
                shape: shape,
              ),
              child: SizedBox(
                width: width,
                // 6.
                child: preview,
              ),
            ),
          );
        },
      );
    },
)
```

--------------------------------

### Implement AwesomePauseResumeButton

Source: https://docs.page/Apparence-io/camera_awesome/widgets/awesome_buttons

Use this widget to control video recording state. It supports custom theming via AwesomeTheme.

```dart
AwesomePauseResumeButton(
  state: videoRecordingCameraState,
  // You can provide a custom theme to the button. If you don't, it will use the theme from CameraAwesomeBuilder
  theme: AwesomeTheme(
    buttonTheme: AwesomeButtonTheme(
      iconSize: 28,
      padding: const EdgeInsets.all(8),
      foregroundColor: Colors.black,
      backgroundColor: Colors.white,
    ),
  ),
)
```

--------------------------------

### Initialize FaceDetector

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/detecting_faces

Configure the MLKit FaceDetector with options for contours, landmarks, and classification.

```dart
final options = FaceDetectorOptions(
  enableContours: true,
  enableClassification: true,
  enableLandmarks: true,
);
late final faceDetector = FaceDetector(options: options);
```

--------------------------------

### Handle camera states with pattern matching

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/custom-ui

Uses the state pattern to execute specific actions based on the current camera mode.

```dart
state.when(
    onAnalysisOnlyMode: (analysisCameraState) => analysisCameraState.startAnalysis(),
    onPhotoMode: (photoCameraState) => photoCameraState.takePhoto(),
    onVideoMode: (videoCameraState) => videoCameraState.startRecording(),
    onVideoRecordingMode: (videoRecordingCameraState) => videoRecordingCameraState.stopRecording(),
    onPreparingCamera: (preparingCameraState) => Loader(),
    onPreviewMode: (previewCameraState) => previewModeState.focus(),
);
```

--------------------------------

### Implement AwesomeSensorTypeSelector

Source: https://docs.page/Apparence-io/camera_awesome/widgets/awesome_buttons

Provides a UI to switch between available camera sensors on iOS. Requires a valid camera state.

```dart
AwesomeSensorTypeSelector(state: state)
```

--------------------------------

### Handle AnalysisImage formats with when()

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/image_format_conversions

Use the when() helper function to pattern match on the specific AnalysisImage implementation and execute format-specific logic.

```dart
final Widget? result = img.when(jpeg: (JpegImage image) {
    return handleJpeg(image);
}, yuv420: (Yuv420Image image) {
    return handleYuv420( image);
}, nv21: (Nv21Image image) {
    return handleNv21(image);
}, bgra8888: (Bgra8888Image image) {
    return handleBgra8888(image);
})
```

--------------------------------

### Displaying Media Preview with AwesomeMediaPreview

Source: https://docs.page/Apparence-io/camera_awesome/widgets/awesome_buttons

Uses a StreamBuilder to listen to capture states and display the last captured media. Video preview is not supported by this widget.

```dart
StreamBuilder<MediaCapture?>(
  stream: state.captureState$,
  builder: (context, snapshot) {
    if (!snapshot.hasData) {
      return Container(width: 72, height: 72);
    }
    return SizedBox(
      width: 72,
      child: AwesomeMediaPreview(
        mediaCapture: snapshot.requireData,
        onMediaTap: onMediaTap,
      ),
    );
  },
)
```

--------------------------------

### Import package in Flutter

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/installing

Import the main CamerAwesome library into your Dart files.

```dart
import 'package:camerawesome/camerawesome_plugin.dart';
```

--------------------------------

### Convert Image Point to Preview Coordinates

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/reading_barcodes

Utility method to map a point from the raw analysis image to the preview display, handling device-specific orientation and mirroring.

```dart
/// this method is used to convert a point from an image to the preview
/// according to the current preview size and the image size
/// also in case of Android, it will flip the point if required
Offset convertFromImage(
    Offset point,
    AnalysisImage img,
);
```

--------------------------------

### Create a Custom Flash Button Widget

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/custom-ui

Uses StreamBuilder to listen to sensorConfig$ and flashMode$ for reactive UI updates. Ensure the widget is provided with a valid CameraState instance.

```dart
class AwesomeFlashButton extends StatelessWidget {
  final CameraState state;

  const AwesomeFlashButton({
    super.key,
    required this.state,
  });

  @override
  Widget build(BuildContext context) {
    return StreamBuilder<SensorConfig>(
      // Listen to the current SensorConfig. It might change when switching between front and back cameras.
      stream: state.sensorConfig$,
      builder: (_, sensorConfigSnapshot) {
        if (!sensorConfigSnapshot.hasData) {
          return const SizedBox.shrink();
        }
        final sensorConfig = sensorConfigSnapshot.requireData;
        return StreamBuilder<FlashMode>(
          // Listen to the currently selected flash mode
          stream: sensorConfig.flashMode$,
          builder: (context, snapshot) {
            if (!snapshot.hasData) {
              return Container();
            }
            return _FlashButton.from(
              // Build your button differently based on the current Flash mode, with different icons for instance
              flashMode: snapshot.requireData,
              onTap: () => sensorConfig.switchCameraFlash(),
            );
          },
        );
      },
    );
  }
}
```

--------------------------------

### AwesomeCaptureButton

Source: https://docs.page/Apparence-io/camera_awesome/widgets/awesome_buttons

A button widget to trigger photo capture or video recording based on the current camera mode.

```APIDOC
## AwesomeCaptureButton

### Description
A button that takes a photo when in Photo mode or starts/stops recording when in Video mode.

### Parameters
- **state** (CameraState) - Required - The current camera state.
```

--------------------------------

### Implement CameraPreviewDisplayer Widget

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/image_format_conversions

A StatefulWidget that consumes an AnalysisImage stream, converts various image formats to JPEG, and applies filters before rendering.

```dart
class CameraPreviewDisplayer extends StatefulWidget {
  final Stream<AnalysisImage> analysisImageStream;

  const CameraPreviewDisplayer({
    super.key,
    required this.analysisImageStream,
  });

  @override
  State<CameraPreviewDisplayer> createState() => _CameraPreviewDisplayerState();
}

class _CameraPreviewDisplayerState extends State<CameraPreviewDisplayer> {
  // 1.
  Uint8List? _cachedJpeg;

  @override
  Widget build(BuildContext context) {
    return Center(
      // 2.
      child: StreamBuilder<AnalysisImage>(
        stream: widget.analysisImageStream,
        builder: (_, snapshot) {
          if (!snapshot.hasData) {
            return const SizedBox.shrink();
          }

          final img = snapshot.requireData;
          // 3.
          return img.when(jpeg: (image) {
            // 4.
            _cachedJpeg = _applyFilterOnBytes(image.bytes);

            return ImageAnalysisPreview(
              currentJpeg: _cachedJpeg!,
              width: image.width.toDouble(),
              height: image.height.toDouble(),
            );
          }, yuv420: (Yuv420Image image) {
            // 5.
            return FutureBuilder<JpegImage>(
                future: image.toJpeg(),
                builder: (_, snapshot) {
                  if (snapshot.data == null && _cachedJpeg == null) {
                    return const Center(
                      child: CircularProgressIndicator(),
                    );
                  } else if (snapshot.data != null) {
                    // 6.
                    _cachedJpeg = _applyFilterOnBytes(
                      snapshot.data!.bytes,
                    );
                  }
                  return ImageAnalysisPreview(
                    currentJpeg: _cachedJpeg!,
                    width: image.width.toDouble(),
                    height: image.height.toDouble(),
                  );
                });
          }, nv21: (Nv21Image image) {
            // 7.
            return FutureBuilder<JpegImage>(
                future: image.toJpeg(),
                builder: (_, snapshot) {
                  if (snapshot.data == null && _cachedJpeg == null) {
                    return const Center(
                      child: CircularProgressIndicator(),
                    );
                  } else if (snapshot.data != null) {
                    _cachedJpeg = _applyFilterOnBytes(
                      snapshot.data!.bytes,
                    );
                  }
                  return ImageAnalysisPreview(
                    currentJpeg: _cachedJpeg!,
                    width: image.width.toDouble(),
                    height: image.height.toDouble(),
                  );
                });
          }, bgra8888: (Bgra8888Image image) {
            // 8.
            _cachedJpeg = _applyFilterOnImage(
              imglib.Image.fromBytes(
                width: image.width,
                height: image.height,
                bytes: image.planes[0].bytes.buffer,
                order: imglib.ChannelOrder.bgra,
              ),
            );

            return ImageAnalysisPreview(
              currentJpeg: _cachedJpeg!,
              width: image.width.toDouble(),
              height: image.height.toDouble(),
            );
            // We handle all formats so we're sure there won't be a null value
          })!;
        },
      ),
    );
  }

  Uint8List _applyFilterOnBytes(Uint8List bytes) {
    return _applyFilterOnImage(imglib.decodeJpg(bytes)!);
  }

  Uint8List _applyFilterOnImage(imglib.Image image) {
    // 9.
    return imglib.encodeJpg(
      imglib.billboard(image),
      quality: 70,
    );
  }
}
```

--------------------------------

### Implement AnalysisImage to InputImage Extension

Source: https://docs.page/Apparence-io/camera_awesome/image_analysis/reading_barcodes

Provides an extension on AnalysisImage to handle conversion to MLKit's InputImage format for both NV21 and BGRA8888 image types.

```dart
import 'package:camerawesome/camerawesome_plugin.dart';
import 'package:google_mlkit_face_detection/google_mlkit_face_detection.dart';

extension MLKitUtils on AnalysisImage {
  InputImage toInputImage() {
    // 1.
    final planeData =
        when(nv21: (img) => img.planes, bgra8888: (img) => img.planes)?.map(
      (plane) {
        return InputImagePlaneMetadata(
          bytesPerRow: plane.bytesPerRow,
          height: height,
          width: width,
        );
      },
    ).toList();

    // 2.
    return when(nv21: (image) {
      // 3.
      return InputImage.fromBytes(
        bytes: image.bytes,
        metadata: InputImageMetadata(
            rotation: inputImageRotation,
            format: InputImageFormat.nv21,
            size: image.size,
            bytesPerRow: image.planes.first.bytesPerRow,
        ),
      );
    }, bgra8888: (image) {
      // 4. 
      final inputImageData = InputImageData(
        size: size,
        imageRotation: inputImageRotation,
        inputImageFormat: inputImageFormat,
        planeData: planeData,
      );

      // 5.
      return InputImage.fromBytes(
        bytes: image.bytes,
        inputImageData: inputImageData,
      );
    })!;
  }

  InputImageRotation get inputImageRotation =>
      InputImageRotation.values.byName(rotation.name);

  InputImageFormat get inputImageFormat {
    switch (format) {
      case InputAnalysisImageFormat.bgra8888:
        return InputImageFormat.bgra8888;
      case InputAnalysisImageFormat.nv21:
        return InputImageFormat.nv21;
      default:
        return InputImageFormat.yuv420;
    }
  }
}
```

--------------------------------

### Configuring AwesomeBottomActions

Source: https://docs.page/Apparence-io/camera_awesome/widgets/layout

Customizing the bottom actions area, including the capture button and side widgets.

```dart
AwesomeBottomActions(
  // CameraState is required
  state: state,
  // You can set your own capture button
  captureButton: MyCaptureButton(
    state: state,
  ),
  // Padding around the bottom actions
  padding: const EdgeInsets.only(
    bottom: 16,
    left: 8,
    right: 8,
  ),
  // Widget to the left of the captureButton
  left: AwesomeFlashButton(
    state: state,
  ),
  // Widget to the right of the captureButton
  right: AwesomeCameraSwitchButton(
    state: state,
    scale: 1.0,
    onSwitchTap: (state) {
      state.switchCameraSensor(
        aspectRatio: state.sensorConfig.aspectRatio,
      );
    },
  ),
  // Callback used by default values. Don't specify it if you override left and right widgets.
  onMediaTap: null,
);
```

--------------------------------

### Add Android audio recording permission

Source: https://docs.page/Apparence-io/camera_awesome/getting_started/installing

Include the RECORD_AUDIO permission in the AndroidManifest.xml file for video recording.

```xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.yourpackage">
    <uses-permission android:name="android.permission.RECORD_AUDIO" />

    
</manifest>
```

--------------------------------

### Access the current theme

Source: https://docs.page/Apparence-io/camera_awesome/widgets/theming

Retrieve the active AwesomeTheme instance from the widget tree using the AwesomeThemeProvider.

```dart
final myTheme = AwesomeThemeProvider.of(context).theme
```

--------------------------------

### Apply a filter in CameraAwesomeBuilder

Source: https://docs.page/Apparence-io/camera_awesome/widgets/awesome_filters

Use the filter parameter within the CameraAwesomeBuilder.awesome constructor to apply a specific filter.

```dart
CameraAwesomeBuilder.awesome(
  // [...]
  filter: AwesomeFilter.AddictiveRed,
),
```
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