gif

README

This library provides only one method DrawGif which generates animated GIF image, based on an imput.

Here is an example:

f, _ := os.OpenFile("out.gif", os.O_WRONLY|os.O_CREATE, 0600)
defer f.Close()

err := DrawGif(DefaultFace(), []string{
"ba ",
"   DUM!",
" Tss",
}, []int{10, 50, 100}, f)

Arguments are:

• *truetype.Font - which font to use for rendering
• slice of frames to animate
• slice of timings for frames in 100ths of a second
• io.Writer - where to write data (in this example it is a file out.gif)

out.gif output file in this case will look like this:

This library I use in telegram bot: https://telegram.me/text_shots_bot

Documentation

Index

• func Asset(name string) ([]byte, error)
• func AssetDir(name string) ([]string, error)
• func AssetInfo(name string) (os.FileInfo, error)
• func AssetNames() []string
• func DefaultFace() *truetype.Font
• func DrawGif(f *truetype.Font, frames []string, delays []int, out io.Writer) error
• func MustAsset(name string) []byte
• func RestoreAsset(dir, name string) error
• func RestoreAssets(dir, name string) error

Functions

func Asset

func Asset(name string) ([]byte, error)

Asset loads and returns the asset for the given name. It returns an error if the asset could not be found or could not be loaded.

func AssetDir

func AssetDir(name string) ([]string, error)

AssetDir returns the file names below a certain directory embedded in the file by go-bindata. For example if you run go-bindata on data/... and data contains the following hierarchy:

data/
  foo.txt
  img/
    a.png
    b.png

then AssetDir("data") would return []string{"foo.txt", "img"} AssetDir("data/img") would return []string{"a.png", "b.png"} AssetDir("foo.txt") and AssetDir("notexist") would return an error AssetDir("") will return []string{"data"}.

func AssetInfo

func AssetInfo(name string) (os.FileInfo, error)

AssetInfo loads and returns the asset info for the given name. It returns an error if the asset could not be found or could not be loaded.

func AssetNames

func AssetNames() []string

AssetNames returns the names of the assets.

func DefaultFace

func DefaultFace() *truetype.Font

func DrawGif

func DrawGif(f *truetype.Font, frames []string, delays []int, out io.Writer) error

func MustAsset

func MustAsset(name string) []byte

MustAsset is like Asset but panics when Asset would return an error. It simplifies safe initialization of global variables.

func RestoreAsset

func RestoreAsset(dir, name string) error

RestoreAsset restores an asset under the given directory

func RestoreAssets

func RestoreAssets(dir, name string) error

RestoreAssets restores an asset under the given directory recursively