image

Documentation

Index

• Constants
• func AutoLoad(r io.Reader, ext string) (image.Image, error)
• func AutoLoadFile(file string) (image.Image, error)
• type Pool
  • func NewPool(cachedSize int) *Pool
  • func (p *Pool) Get(file string) (image.Image, error)

Constants

const DefaultPoolSize = 10

Functions

func AutoLoad

func AutoLoad(r io.Reader, ext string) (image.Image, error)

load image data from io.Reader r with its image type, png, jpeg, and jpg, and return loaded image with error. error contains unsupported extension.

func AutoLoadFile

func AutoLoadFile(file string) (image.Image, error)

auto detect file extension, png, jpeg, and jpg, and return loaded image data with error. error contains file not found, unsupported extension, ... etc.

Types

type Pool

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

Pool holds image caches. concurrent use is OK.

func NewPool

func NewPool(cachedSize int) *Pool

Pool has cachedSize cache entries. the oldest image is removed from cache using LRU. use DefaultPoolSize if cachedSize <= 0.

func (*Pool) Get

func (p *Pool) Get(file string) (image.Image, error)

get cached image by using image's file name. if not found, load image data from file and return loaded image with loading error. error nil means loaded image found.