TextSightController class final

Configures and drives a live camera recognition session.

The Dart face of the live-camera driver. A ChangeNotifier exposing the current configuration and session state through individual getters — no bundled state object — that a TextSightView (or any listener) rebuilds from. Per-frame results arrive on captures; the preview renders the textureId. Every call delegates to TextSightPlatform.instance, so the controller carries no platform knowledge of its own.

Inheritance

Constructors

TextSightController({TextSightOptions options = const TextSightOptions(), bool torchEnabled = false})
Creates a controller seeded from options (the shared recognizer config) and an initial torch state. Nothing opens the camera until start.

Properties

captures → Stream<TextSightCapture>
The live per-frame results stream. Subscribers must cancel their own subscription. The controller does not own it.
no setter
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
isRunning → bool
Whether a session is started and delivering captures.
no setter
isTorchEnabled → bool
Whether the torch is currently requested on.
no setter
languages → Iterable<Locale>
The current preferred recognition languages, most-preferred first.
no setter
recognitionLevel → RecognitionLevel
The current accuracy/latency level.
no setter
regionOfInterest → Rect?
The current scan-box, or null when recognition spans the whole frame.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
textureId → int?
The preview texture id, or null before start has acquired one. Read by TextSightView to mount the camera preview.
no setter

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
dispose() → void
Discards any resources used by the object.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
start() → Future<void>
Opens the camera if needed and begins recognition. Idempotent on the texture: a session acquired once is reused across stop/start.
stop() → Future<void>
Pauses recognition while keeping the session (and texture) alive.
toString() → String
A string representation of this object.
inherited
updateLanguages(Iterable<Locale> languages) → Future<void>
Replaces the preferred recognition languages, most-preferred first.
updateRecognitionLevel(RecognitionLevel level) → Future<void>
Switches the accuracy/latency level of the running recognizer.
updateRegionOfInterest(Rect? roi) → Future<void>
Restricts recognition to roi, or clears it (whole frame) when null.
updateTorchEnabled({required bool enabled}) → Future<void>
Requests the camera torch on or off (no-op on devices without one).

Operators

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