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|
package main
import (
"html/template"
"image"
"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(`
<!DOCTYPE html>
<html><body>
<table border='1' cellpadding='3' style='border-collapse: collapse'>
<tr>
<th>Name</th>
<th>Preview</th>
<tr>
{{- range $k, $v := . }}
<tr>
<td>{{ $k }}</td>
<td><img src='?name={{ $k }}'></td>
</tr>
{{- end }}
</table>
</body></html>
`))
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, font.Name)
fonts[filename] = fontItem{Font: font, Preview: img}
}
log.Println("starting server")
http.HandleFunc("/", handle)
log.Fatal(http.ListenAndServe(":8080", nil))
}
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