func uploadUser(w http.ResponseWriter, r *http.Request) {
if r.Method != "POST" {
// No upload; show the upload form.
uploadUserTemplate.Execute(w, nil)
return
}
f, _, err := r.FormFile("image")
errors.Check(err)
defer f.Close()
// Grab the image data
i, _, err := image.Decode(f)
errors.Check(err)
var key string = keyOf()
// store image
i = picstore.Store(key, i, 320, "userimg")
i = picstore.Store(key, i, 180, "userthumb")
// generate result
w.Header().Set("Content-Type", "application/json")
w.Header().Set("cache-control", "no-cache")
w.Header().Set("Expires", "-1")
fmt.Fprintf(w, "{\"profilePicUrl\":\"uimg?id="+key+"\",\"profileThumbUrl\":\"utmb?id="+key+"\"}")
}
// read image by key from storage
func Read(key string, storagename string) []byte {
mu.Lock()
storage, _ := gocask.NewGocask("images/" + storagename)
buf, err := storage.Get(key)
storage.Close()
mu.Unlock()
errors.Check(err)
return buf
}
func StoreSubImage(key string, i image.Image, vert int, hor int, storename string) {
img := cropImage(i, vert, hor)
buf := new(bytes.Buffer)
buf.Reset()
err := jpeg.Encode(buf, img, nil)
errors.Check(err)
var barray []byte = buf.Bytes()
mu.Lock()
storage, _ := gocask.NewGocask("images/" + storename)
err = storage.Put(key, barray)
storage.Close()
mu.Unlock()
errors.Check(err)
}
// resize image, store and return resized image
func Store(key string, i image.Image, maxsize int, storename string) image.Image {
// store big image
i = resizeImage(i, maxsize) // Масштабируем пропорционально до maxsize пикселей, если какая-либо сторона больше.
// Encode as a new JPEG image.
buf := new(bytes.Buffer)
buf.Reset()
err := jpeg.Encode(buf, i, nil)
errors.Check(err)
var barray []byte = buf.Bytes()
mu.Lock()
storage, _ := gocask.NewGocask("images/" + storename)
err = storage.Put(key, barray)
storage.Close()
mu.Unlock()
errors.Check(err)
return i
}