func serveImage(w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
r.ParseForm()
text := r.FormValue("text")
width, _ := strconv.ParseInt(params["width"], 10, 32)
height, _ := strconv.ParseInt(params["height"], 10, 32)
// FIXME err handling
if width > 4000 || height > 4000 {
w.Header().Set("Content-Type", "text/html")
w.Write([]byte("image too large"))
return
}
img, err := goplaceholder.Placeholder(
text,
"/usr/share/fonts/TTF/DejaVuSans-Bold.ttf",
color.RGBA{150, 150, 150, 255},
color.RGBA{204, 204, 204, 255},
int(width), int(height))
if err != nil {
log.Println(err)
return
}
w.Header().Set("Content-Type", "image/png")
png.Encode(w, img)
log.Printf("served image: w: %d h: %d\n", width, height)
}
func main() {
width := flag.Int("width", 0, "image width")
height := flag.Int("height", 0, "image height")
text := flag.String("text", "", "optional text")
flag.Parse()
font := "/usr/share/fonts/TTF/DejaVuSans-Bold.ttf"
fg := color.RGBA{150, 150, 150, 255}
bg := color.RGBA{204, 204, 204, 255}
img, err := goplaceholder.Placeholder(*text, font, fg, bg, *width, *height)
if err != nil {
log.Fatal(err)
}
writeImageToPng(&img, "./test.png")
}