goico

Implements basic support for encoding and decoding ICO files.

Supported

• .ico and .cur
• BMP Images
• 32bit Alpha
• CUR Hotspots

Unsupported

• PNG Images

Usage

Config Decoding

f, err := os.Open("favicon.ico")
if err != nil {
    panic(err)
}
defer f.Close()

config, err := goico.DecodeConfig(f)
if err != nil {
    panic(err)
}

Decoding

f, err := os.Open("favicon.ico")
if err != nil {
    panic(err)
}
defer f.Close()

config, imgs, err := goico.Decode(f)
if err != nil {
    panic(err)
}

Encoding

f, err := os.Create("favicon.ico")
if err != nil {
    panic(err)
}
defer f.Close()

imgs := []image.Image{...} // images with a max size of 256x256
ico, err := goico.NewICOConfig(imgs)
if err != nil {
    panic(err)
}

err = goico.Encode(f, ico, imgs)
if err != nil {
    panic(err)
}