filter

Documentation

Index

• Constants
• type Filter
  • func New(t string, d map[string]interface{}) (Filter, error)
  • func NewFromConfig(c interface{}) (Filter, error)
  • func NewFromMap(m map[string]interface{}) (Filter, error)
• type Filters
  • func (f Filters) Apply(img image.Image) (image.Image, error)
• type Null
  • func NewNull() *Null
  • func NewNullFromMap(d map[string]interface{}) (*Null, error)
  • func (f Null) Apply(img image.Image) (image.Image, error)
• type Resize
  • func NewResize(w, h int) *Resize
  • func NewResizeFromMap(d map[string]interface{}) (*Resize, error)
  • func (f Resize) Apply(img image.Image) (image.Image, error)
• type Thumbnail
  • func NewThumbnail(w, h int, g string) *Thumbnail
  • func NewThumbnailFromMap(d map[string]interface{}) (*Thumbnail, error)
  • func (filter Thumbnail) Apply(img image.Image) (image.Image, error)
• type Watermark
  • func NewWatermark(fontSizes []float64, gridCellSize int, text string, ttf *truetype.Font) *Watermark
  • func NewWatermarkFromMap(d map[string]interface{}) (*Watermark, error)
  • func (f Watermark) Apply(img image.Image) (image.Image, error)

Constants

const GravityCenter string = "center"

const GravityEast string = "east"

const GravityNorth string = "north"

const GravitySouth string = "south"

const GravityWest string = "west"

const TypeResize = "resize"

const TypeThumbnail = "thumbnail"

const TypeWatermark = "watermark"

Types

type Filter

type Filter interface {
	Apply(img image.Image) (image.Image, error)
}

func New

func New(t string, d map[string]interface{}) (Filter, error)

func NewFromConfig

func NewFromConfig(c interface{}) (Filter, error)

func NewFromMap

func NewFromMap(m map[string]interface{}) (Filter, error)

type Filters

type Filters []Filter

func (Filters) Apply

func (f Filters) Apply(img image.Image) (image.Image, error)

type Null

type Null struct{}

func NewNull

func NewNull() *Null

func NewNullFromMap

func NewNullFromMap(d map[string]interface{}) (*Null, error)

func (Null) Apply

func (f Null) Apply(img image.Image) (image.Image, error)

type Resize

type Resize struct {
	Width  int
	Height int
}

func NewResize

func NewResize(w, h int) *Resize

func NewResizeFromMap

func NewResizeFromMap(d map[string]interface{}) (*Resize, error)

func (Resize) Apply

func (f Resize) Apply(img image.Image) (image.Image, error)

type Thumbnail

type Thumbnail struct {
	// contains filtered or unexported fields
}

func NewThumbnail

func NewThumbnail(w, h int, g string) *Thumbnail

func NewThumbnailFromMap

func NewThumbnailFromMap(d map[string]interface{}) (*Thumbnail, error)

func (Thumbnail) Apply

func (filter Thumbnail) Apply(img image.Image) (image.Image, error)

type Watermark

type Watermark struct {
	Text         string
	Font         *truetype.Font
	GridCellSize int
	// contains filtered or unexported fields
}

func NewWatermark

func NewWatermark(fontSizes []float64, gridCellSize int, text string, ttf *truetype.Font) *Watermark

func NewWatermarkFromMap

func NewWatermarkFromMap(d map[string]interface{}) (*Watermark, error)

func (Watermark) Apply

func (f Watermark) Apply(img image.Image) (image.Image, error)