event

Documentation

Overview

Package event contains types for event handling.

Index

• func Op(o *op.Ops, tag Tag)
• type Event
• type Filter
• type Tag

Functions

func Op

func Op(o *op.Ops, tag Tag)

Op declares a tag for input routing at the current transformation and clip area hierarchy. It panics if tag is nil.

Types

type Event

type Event interface {
	ImplementsEvent()
}

Event is the marker interface for events.

type Filter

type Filter interface {
	ImplementsFilter()
}

Filter represents a filter for Event types.

type Tag

type Tag interface{}

Tag is the stable identifier for an event handler. For a handler h, the tag is typically &h.