1 files changed, 93 insertions, 0 deletions
diff --git a/cmd/bdf-preview/main.go b/cmd/bdf-preview/main.go
new file mode 100644
index 0000000..b1f2045
--- /dev/null
+++ b/cmd/bdf-preview/main.go
@@ -0,0 +1,93 @@
+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))
+}