invert

Documentation

Index

• type Invert
  • func (f Invert) Apply(repl *caddy.Replacer, img image.Image) (image.Image, error)
• type InvertFactory
  • func (ff InvertFactory) Name() string
  • func (ff InvertFactory) New(args ...string) (imagefilter.Filter, error)
  • func (ff InvertFactory) Unmarshal(data []byte) (imagefilter.Filter, error)

Types

type Invert

type Invert struct{}

Invert produces an inverted (negated) version of the image.

func (Invert) Apply

func (f Invert) Apply(repl *caddy.Replacer, img image.Image) (image.Image, error)

Apply applies the image filter to an image and returns the new image.

type InvertFactory

type InvertFactory struct{}

InvertFactory creates Invert instances.

func (InvertFactory) Name

func (ff InvertFactory) Name() string

Name returns the name of the filter, which is also the directive used in the image filter block.

func (InvertFactory) New

func (ff InvertFactory) New(args ...string) (imagefilter.Filter, error)

New initialises and returns a configured Grayscale instance.

Syntax:

invert

no parameters.

func (InvertFactory) Unmarshal

func (ff InvertFactory) Unmarshal(data []byte) (imagefilter.Filter, error)

Unmarshal decodes JSON data and returns a Invert instance.