package main import ( "html/template" "image" "image/color" "image/draw" "image/png" "log" "net/http" "os" "janouch.name/sklad/bdf" ) type fontItem struct { Font *bdf.Font Preview image.Image } var fonts = map[string]fontItem{} var tmpl = template.Must(template.New("list").Parse(` {{- range $k, $v := . }} {{- end }}
Name Preview
{{ $k }}
`)) func handle(w http.ResponseWriter, r *http.Request) { if err := r.ParseForm(); err != nil { http.Error(w, err.Error(), 500) return } name := r.FormValue("name") if name == "" { w.Header().Set("Content-Type", "text/html") tmpl.Execute(w, fonts) return } item, ok := fonts[name] if !ok { http.Error(w, "No such font.", 400) return } w.Header().Set("Content-Type", "image/png") if err := png.Encode(w, item.Preview); err != nil { http.Error(w, err.Error(), 500) return } } func main() { for _, filename := range os.Args[1:] { fi, err := os.Open(filename) if err != nil { log.Fatalln(err) } font, err := bdf.NewFromBDF(fi) if err != nil { log.Fatalf("%s: %s\n", filename, err) } if err := fi.Close(); err != nil { log.Fatalln(err) } r, _ := font.BoundString(font.Name) super := r.Inset(-3) img := image.NewRGBA(super) draw.Draw(img, super, image.White, image.ZP, draw.Src) font.DrawString(img, image.ZP, color.Black, font.Name) fonts[filename] = fontItem{Font: font, Preview: img} } log.Println("starting server") http.HandleFunc("/", handle) log.Fatal(http.ListenAndServe(":8080", nil)) }