Interface IQRCodeWatcherService

Interface that defines a service used to detect QR codes in the user's environment.

Namespace: Evergine.Framework.XR.QR
Assembly: Evergine.Framework.dll
Syntax
public interface IQRCodeWatcherService

Properties

IsSupported

Gets a value indicating whether QR code detection is supported on the current device.

Declaration
bool IsSupported { get; }
Property Value
Type Description
bool

IsWatcherRunning

Gets a value indicating whether the QR code scanner is running.

Declaration
bool IsWatcherRunning { get; }
Property Value
Type Description
bool

QRCodes

Gets a sequence containing all detected QR codes.

Declaration
IEnumerable<QRCode> QRCodes { get; }
Property Value
Type Description
IEnumerable<QRCode>

Methods

ClearQRCodes()

Removes previously detected codes.

Declaration
void ClearQRCodes()

StartQRWatchingAsync(CancellationToken)

Starts tracking QR codes asynchronously. Should not be called if the feature is not supported; check IsSupported to see if this feature is supported. Raises exceptions E_ACCESSDENIED, E_NOT_VALID_STATE, ERROR_NOT_SUPPORTED.

Declaration
Task StartQRWatchingAsync(CancellationToken cancellationToken = default)
Parameters
Type Name Description
CancellationToken cancellationToken

A cancellation token that can be used to cancel the work.
Returns
Type Description
Task

A task that represents the start tracking asynchronous operation.

StopQRWatchingAsync()

Stops the QR codes watcher asynchronously.

Declaration
Task StopQRWatchingAsync()
Returns
Type Description
Task

A task that represents the asynchronous stop operation.

Events

IsWatcherRunningChanged

Occurs when the value of IsWatcherRunning changes.

Declaration
event EventHandler IsWatcherRunningChanged
Event Type
Type Description
EventHandler

QRCodeAdded

Event representing the addition of a QRCode.

Declaration
event EventHandler<QRCode> QRCodeAdded
Event Type
Type Description
EventHandler<QRCode>

QRCodeRemoved

Event representing the update of a QRCode.

Declaration
event EventHandler<QRCode> QRCodeRemoved
Event Type
Type Description
EventHandler<QRCode>

QRCodeUpdated

Event representing the removal of a QRCode.

Declaration
event EventHandler<QRCode> QRCodeUpdated
Event Type
Type Description
EventHandler<QRCode>

Extension Methods