progress

Documentation

Index

• type Tracker
  • func NewTracker[E any](fn func(E)) Tracker

Types

type Tracker

type Tracker interface {
	OnEvent(any)
}

Tracker receives progress events during image operations. Implementations must be safe for concurrent use from multiple goroutines.

var Nop Tracker = funcTracker(func(any) {})

Nop is a no-op tracker for callers that don't need progress.

func NewTracker

func NewTracker[E any](fn func(E)) Tracker

NewTracker creates a Tracker from a typed callback function. The caller works with a concrete event type; the Tracker interface stays non-generic so it can be used in interfaces like Images.