ImageController class - n_image_picker_view library

Constructors

ImageController.new({String key = "image", int? maxSize}): Constructs an ImageController with optional key and maxSize.

Properties

bytes → Uint8List?: Returns the raw bytes of the current image, or null if none.
no setter
extension → String?: Returns the file extension of the image, or null if none.
no setter
hashCode → int: The hash code for this object.
no setterinherited
hasImage → bool: Returns true if an image is loaded and its bytes are not empty.
no setter
hasListeners → bool: Whether any listeners are currently registered.
no setterinherited
hasNoImage → bool: Returns true if no image is loaded.
no setter
multipartFile → MultipartFile?: Returns the multipart file representation of the image, or null if none.
no setter
name → String?: Returns the file name of the image, or null if none.
no setter
onDrag ↔ bool: Indicates whether a drag operation is currently active.
getter/setter pair
onError ↔ bool: WEB Indicates if an error occurred during image loading or processing.
getter/setter pair
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
size → Size?: Returns the size of the image, or null if none.
no setter
stream ↔ StreamController<bool>?: getter/setter pair

Methods

addListener(VoidCallback listener) → void: Register a closure to be called when the object changes.
inherited
changeOnDragState(bool state) → void: Updates the drag state to state and notifies listeners if changed.
changeOnErrorState(bool state) → void: Updates the error state to state and notifies listeners.
dispose() → void: Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
inherited
fromAsset({required Map<String, String>? headers, required String url, String? key}) → Future<void>: Loads image data from an asset URL with optional HTTP headers.
fromUint8List({required Uint8List bytes, required String name, String? key}) → Future<void>: Creates image data from raw bytes and a file name.
fromUrl({required Map<String, String>? headers, required String url, String? key}) → Future<void>: Loads image data from a URL with optional HTTP headers.
getOnloadingImage({required String path, String? key}) → Future<void>: Asynchronously loads an image from the specified path. Updates internal state and handles errors.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void: Call all the registered listeners.
inherited
pickImage({String? key}) → Future<void>: Opens file picker to select an image, then processes and stores it.
preview(BuildContext context, {double? sigma, bool? barrierDismissible, Object? tag, Color? barrierColor, Widget? closeButton, BoxDecoration? decoration}) → void: Displays a preview of the current image using showImagePreview. Allows customization of preview dialog appearance.
removeImage() → void: Removes the current image and resets error state.
removeListener(VoidCallback listener) → void: Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
startLoading() → void: Initiates the loading process and notifies listeners.
stopLoading() → void: Ends the loading process and notifies listeners.
toString() → String: A string representation of this object.
inherited
updateHeaders(Map<String, String> headers) → void: Updates the HTTP headers used for image requests.
updateKey(String key) → void: Updates the key identifier used for image data.
updateMaxSize(int maxSize) → void: Updates the maximum allowed size for the image.

Operators

operator ==(Object other) → bool: The equality operator.
inherited