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label-tool: allow choosing from multiple fonts

This commit is contained in:
Přemysl Eric Janouch 2019-04-25 20:33:51 +02:00
parent 5cef6b240a
commit 154f3147e3
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 75 additions and 25 deletions
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90
cmd/label-tool/main.go
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@ -4,6 +4,7 @@ import (
"errors"
"html/template"
"image"
"image/draw"
"image/png"
"log"
"net/http"
@ -16,15 +17,26 @@ import (
"janouch.name/sklad/ql"
)
var font *bdf.Font
var tmplFont = template.Must(template.New("font").Parse(`
<!DOCTYPE html>
<html><body>
<h1>PT-CBP label printing tool</h1>
<h2>Choose font</h2>
{{ range $i, $f := . }}
<p><a href='?font={{ $i }}'>
<img src='?font={{ $i }}&amp;preview' title='{{ $f.Path }}'></a>
{{ end }}
</body></html>
`))
var tmpl = template.Must(template.New("form").Parse(`
var tmplForm = template.Must(template.New("form").Parse(`
<!DOCTYPE html>
<html><body>
<h1>PT-CBP label printing tool</h1>
<table><tr>
<td valign=top>
<img border=1 src='?img&amp;scale={{.Scale}}&amp;text={{.Text}}'>
<img border=1 src='?font={{ .FontIndex }}&amp;scale={{ .Scale }}{{/*
*/}}&amp;text={{ .Text }}&amp;render'>
</td>
<td valign=top>
<fieldset>
@ -59,9 +71,10 @@ var tmpl = template.Must(template.New("form").Parse(`
{{ end }}
</fieldset>
<fieldset>
<p>Font: {{ .Font.Name }}
<p>Font: {{ .Font.Name }} <a href='?'>Change</a>
</fieldset>
<form><fieldset>
<input type=hidden name=font value='{{ .FontIndex }}'>
<p><label for=text>Text:</label>
<input id=text name=text value='{{.Text}}'>
<label for=scale>Scale:</label>
@ -74,6 +87,14 @@ var tmpl = template.Must(template.New("form").Parse(`
</body></html>
`))
type fontItem struct {
Path string
Font *bdf.Font
Preview image.Image
}
var fonts = []*fontItem{}
func getPrinter() (*ql.Printer, error) {
printer, err := ql.Open()
if err != nil {
@ -96,8 +117,28 @@ func getStatus(printer *ql.Printer) error {
}
func handle(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
if r.Method == http.MethodGet {
w.Header().Set("Cache-Control", "no-store")
}
var (
font *fontItem
fontIndex int
err error
)
if fontIndex, err = strconv.Atoi(r.FormValue("font")); err == nil {
font = fonts[fontIndex]
} else {
w.Header().Set("Content-Type", "text/html")
tmplFont.Execute(w, fonts)
return
}
if _, ok := r.Form["preview"]; ok {
w.Header().Set("Content-Type", "image/png")
if err := png.Encode(w, font.Preview); err != nil {
http.Error(w, err.Error(), 500)
}
return
}
@ -126,6 +167,7 @@ func handle(w http.ResponseWriter, r *http.Request) {
InitErr error
MediaInfo *ql.MediaInfo
Font *bdf.Font
FontIndex int
Text string
Scale int
}{
@ -133,11 +175,11 @@ func handle(w http.ResponseWriter, r *http.Request) {
PrinterErr: printerErr,
InitErr: initErr,
MediaInfo: mediaInfo,
Font: font,
Font: font.Font,
FontIndex: fontIndex,
Text: r.FormValue("text"),
}
var err error
params.Scale, err = strconv.Atoi(r.FormValue("scale"))
if err != nil {
params.Scale = 3
@ -146,7 +188,7 @@ func handle(w http.ResponseWriter, r *http.Request) {
var img image.Image
if mediaInfo != nil {
img = &imgutil.LeftRotate{Image: label.GenLabelForHeight(
font, params.Text, mediaInfo.PrintAreaPins, params.Scale)}
font.Font, params.Text, mediaInfo.PrintAreaPins, params.Scale)}
if r.FormValue("print") != "" {
if err := printer.Print(img); err != nil {
log.Println("print error:", err)
@ -154,9 +196,9 @@ func handle(w http.ResponseWriter, r *http.Request) {
}
}
if _, ok := r.Form["img"]; !ok {
if _, ok := r.Form["render"]; !ok {
w.Header().Set("Content-Type", "text/html")
tmpl.Execute(w, &params)
tmplForm.Execute(w, &params)
return
}
@ -173,24 +215,32 @@ func handle(w http.ResponseWriter, r *http.Request) {
}
func main() {
if len(os.Args) != 3 {
log.Fatalf("usage: %s ADDRESS BDF-FILE\n", os.Args[0])
if len(os.Args) < 3 {
log.Fatalf("usage: %s ADDRESS BDF-FILE...\n", os.Args[0])
}
address, bdfPath := os.Args[1], os.Args[2]
var err error
fi, err := os.Open(bdfPath)
address, bdfPaths := os.Args[1], os.Args[2:]
for _, path := range bdfPaths {
fi, err := os.Open(path)
if err != nil {
log.Fatalln(err)
}
font, err = bdf.NewFromBDF(fi)
font, err := bdf.NewFromBDF(fi)
if err != nil {
log.Fatalf("%s: %s\n", path, err)
}
if err := fi.Close(); err != nil {
log.Fatalln(err)
}
if 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 = append(fonts, &fontItem{Path: path, Font: font, Preview: img})
}
log.Println("starting server")