image

package

v0.8.0 Latest Latest Go to latest Published: Nov 12, 2023 License: BSD-3-Clause Imports: 11 Imported by: 0

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Repository

github.com/mzki/erago

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Open Source Insights

Documentation ¶

Index ¶

Constants
func AutoLoad(r io.Reader, ext string) (image.Image, error)
func AutoLoadFile(file string) (image.Image, error)
type LoadOptions
type Loader
- func NewLoader(cachedSize int) *Loader
- func (l *Loader) Get(file string) (image.Image, error)
- func (l *Loader) GetWithOptions(file string, opt LoadOptions) (image.Image, error)

Constants ¶

View Source

const DefaultCacheSize = 10

Variables ¶

This section is empty.

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 LoadOptions ¶ added in v0.6.0

type LoadOptions struct {
	// Size of resized image. Empty this means no resized.
	// If either X or Y of size is zero, auto filled it by calculating
	// from the other with keep aspect ratio.
	// For example, Let source image size (W, H) = (1920, 1080) and resized size
	// (RW, RH) = (960, 0) then auto-filled resized size (RW', RH') = (960, 540)
	// since 1920:1080 = 960:540.
	ResizedSize image.Point
}

LoadOptions is options for image loading.

type Loader ¶ added in v0.6.0

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

Loader holds image caches. concurrent use is OK.

func NewLoader ¶ added in v0.6.0

func NewLoader(cachedSize int) *Loader

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

func (*Loader) Get ¶ added in v0.6.0

func (l *Loader) 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.

func (*Loader) GetWithOptions ¶ added in v0.6.0

func (l *Loader) GetWithOptions(file string, opt LoadOptions) (image.Image, error)

It is almost same as Get(), except that it accepts options for loaded image property.

Source Files ¶

View all Source files

image.go

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