func UpdateServingLogoUrl(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
const batch = 50
page, _ := strconv.Atoi(r.FormValue("pg"))
if page < 1 {
page = 1
}
offset := batch * (page - 1)
q := datastore.NewQuery("EmpLogo").Offset(offset).Order("IdEmp").Limit(batch)
n, _ := q.Count(c)
for i := q.Run(c); ; {
var e model.Image
key, err := i.Next(&e)
if err == datastore.Done {
break
}
// Se crea la URL para servir la oferta desde el CDN, si no se puede
// se deja en blanco
var imgprops image.ServingURLOptions
imgprops.Secure = true
imgprops.Size = 180
imgprops.Crop = false
if e.Sp4 == "" && e.IdEmp != "" {
var blobkey appengine.BlobKey
blob, err := blobstore.Create(c, "image/jpeg")
if err != nil {
c.Errorf("blobstore Create: %v", e.IdEmp)
}
_, err = blob.Write(e.Data)
if err != nil {
c.Errorf("blobstore Write: %v", e.IdEmp)
}
err = blob.Close()
if err != nil {
c.Errorf("blobstore Close: %v", e.IdEmp)
}
blobkey, err = blob.Key()
if err != nil {
c.Errorf("blobstore Key Gen: %v", e.IdEmp)
}
if url, err := image.ServingURL(c, blobkey, &imgprops); err != nil {
c.Errorf("Cannot construct EmpLogo ServingURL : %v", e.IdEmp)
} else {
e.Sp3 = string(blobkey)
e.Sp4 = url.String()
}
_, err = datastore.Put(c, key, &e)
if err != nil {
c.Errorf("PutEmpLogo(); Error al intentar actualizar Emplogo : %v", e.IdEmp)
}
}
}
c.Infof("UpdateServingLogoUrl() Pagina: %d, actualizados: %d, del %d al %d", page, n, offset, offset+n)
return
}
// Resize only if picture from EmpLogo is more than 80 pix width
// If resize, save image to entity king ShortLogo and stream
// If no resize is necesary, save to entity ShortLogo and stream
func rslogo(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
if r.Method == "GET" {
sf, _ := strconv.Atoi(r.FormValue("s"))
force, _ := strconv.Atoi(r.FormValue("force"))
// Check for shortlogo
var simg model.Image
simg.Kind = "ShortLogo"
if r.FormValue("IdEmp") != "" {
simg.IdEmp = r.FormValue("IdEmp")
} else {
w.WriteHeader(http.StatusNotFound)
return
}
if force != 1 {
shortlogo, _ := model.GetShortLogo(c, r.FormValue("IdEmp"))
// Stream short logo if already exists
if shortlogo != nil {
w.Header().Set("Content-type", "image/jpeg")
w.Write(shortlogo.Data)
/*
m, _, err := image.Decode(bytes.NewBuffer(shortlogo.Data))
model.Check(err)
w.Header().Set("Content-type", "image/jpeg")
jpeg.Encode(w, m, nil)
*/
return
}
}
// Process biglogo if shortlogo doesn't exists
// Save and Stream new shortlogo
biglogo := model.GetLogo(c, r.FormValue("IdEmp"))
if biglogo == nil {
// No such imageb
w.WriteHeader(http.StatusNotFound)
return
}
i, _, err := image.Decode(bytes.NewBuffer(biglogo.Data))
if err != nil {
// ERR_BADFORMAT
w.WriteHeader(http.StatusNotFound)
return
}
const max = 70
if sf == 0 {
// We aim for less than max pixels in any dimension.
if b := i.Bounds(); b.Dx() > max || b.Dy() > max {
// If it's gigantic, it's more efficient to downsample first
// and then resize; resizing will smooth out the roughness.
if b.Dx() > 2*max || b.Dy() > 2*max {
w, h := max*2, max*2
if b.Dx() > b.Dy() {
h = b.Dy() * h / b.Dx()
} else {
w = b.Dx() * w / b.Dy()
}
i = resize.Resample(i, i.Bounds(), w, h)
b = i.Bounds()
}
w, h := max, max
if b.Dx() > b.Dy() {
h = b.Dy() * h / b.Dx()
} else {
w = b.Dx() * w / b.Dy()
}
i = resize.Resize(i, i.Bounds(), w, h)
} else {
w, h := max, max
if b.Dx() > b.Dy() {
h = b.Dy() * h / b.Dx()
} else {
w = b.Dx() * w / b.Dy()
}
i = resize.Resize(i, i.Bounds(), w, h)
}
} else {
// We aim for a resize by ratio.
b := i.Bounds()
h := b.Dy()
w := b.Dx()
if sf > 0 && sf <= 2 {
h = h * sf
w = w * sf
} else if sf < 0 && sf > -1 {
sf = (sf * 2) + sf
h = h * (1 / sf)
w = w * (1 / sf)
}
i = resize.Resize(i, i.Bounds(), w, h)
}
// Encode as a new JPEG image.
var buf bytes.Buffer
err = jpeg.Encode(&buf, i, nil)
if err != nil {
// ERR_FAIL_ENCODE
w.WriteHeader(http.StatusNotFound)
return
}
// Save the image under a unique key, a hash of the image.
simg.IdImg = model.RandId(20)
simg.Data = buf.Bytes()
simg.Name = biglogo.Name
simg.Desc = biglogo.Desc
simg.Sizepx = max
simg.Sizepy = 0
simg.Url = biglogo.Url
simg.Type = "jpeg"
simg.Sp1 = biglogo.Sp1
simg.Sp2 = biglogo.Sp2
simg.Sp3 = biglogo.Sp3
simg.Sp4 = biglogo.Sp4
simg.Np1 = biglogo.Np1
simg.Np2 = biglogo.Np2
simg.Np3 = biglogo.Np3
simg.Np4 = biglogo.Np4
_, err = model.PutLogo(c, &simg)
if err != nil {
// ERR_DATASTORE
// Don't return, stream image either way
}
w.Header().Set("Content-type", "image/jpeg")
w.Write(simg.Data)
/*
m, _, err := image.Decode(bytes.NewBuffer(simg.Data))
model.Check(err)
w.Header().Set("Content-type", "image/jpeg")
jpeg.Encode(w, m, nil)
*/
}
}
func slogores(c appengine.Context, id string, max int, sf int) int {
var simg model.Image
// Process biglogo if shortlogo doesn't exists
// Save and Stream new shortlogo
biglogo := model.GetLogo(c, id)
if biglogo == nil {
// No such imageb
return -1
}
i, _, err := image.Decode(bytes.NewBuffer(biglogo.Data))
if err != nil {
// ERR_BADFORMAT
return -1
}
if sf == 0 {
// We aim for less than 80 pixels in any dimension.
if b := i.Bounds(); b.Dx() > max || b.Dy() > max {
// If it's gigantic, it's more efficient to downsample first
// and then resize; resizing will smooth out the roughness.
if b.Dx() > 2*max || b.Dy() > 2*max {
w, h := max*2, max*2
if b.Dx() > b.Dy() {
h = b.Dy() * h / b.Dx()
} else {
w = b.Dx() * w / b.Dy()
}
i = resize.Resample(i, i.Bounds(), w, h)
b = i.Bounds()
}
w, h := max, max
if b.Dx() > b.Dy() {
h = b.Dy() * h / b.Dx()
} else {
w = b.Dx() * w / b.Dy()
}
i = resize.Resize(i, i.Bounds(), w, h)
} else {
w, h := max, max
if b.Dx() > b.Dy() {
h = b.Dy() * h / b.Dx()
} else {
w = b.Dx() * w / b.Dy()
}
i = resize.Resize(i, i.Bounds(), w, h)
}
} else {
// We aim for a resize by ratio.
b := i.Bounds()
h := b.Dy()
w := b.Dx()
if sf > 0 && sf <= 2 {
h = h * sf
w = w * sf
} else if sf < 0 && sf > -1 {
sf = (sf * 2) + sf
h = h * (1 / sf)
w = w * (1 / sf)
}
i = resize.Resize(i, i.Bounds(), w, h)
}
// Encode as a new JPEG image.
var buf bytes.Buffer
err = jpeg.Encode(&buf, i, nil)
if err != nil {
// ERR_FAIL_ENCODE
return -1
}
// Save the image under a unique key, a hash of the image.
shortlogo, _ := model.GetShortLogo(c, id)
simg.Kind = "ShortLogo"
if shortlogo != nil {
simg.IdImg = shortlogo.IdImg
} else {
simg.IdImg = model.RandId(20)
}
simg.IdEmp = id
simg.Data = buf.Bytes()
simg.Name = biglogo.Name
simg.Desc = biglogo.Desc
simg.Sizepx = max
simg.Sizepy = 0
simg.Url = biglogo.Url
simg.Type = "jpeg"
simg.Sp1 = biglogo.Sp1
simg.Sp2 = biglogo.Sp2
simg.Sp3 = biglogo.Sp3
simg.Sp4 = biglogo.Sp4
simg.Np1 = biglogo.Np1
simg.Np2 = biglogo.Np2
simg.Np3 = biglogo.Np3
simg.Np4 = biglogo.Np4
_, err = model.PutLogo(c, &simg)
if err != nil {
return -1
}
return 0
}