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authorPřemysl Janouch <p@janouch.name>2019-04-12 23:50:05 +0200
committerPřemysl Janouch <p@janouch.name>2019-04-12 23:50:05 +0200
commitef904ccf8c244a725ccc5ec63e06d716a312eda8 (patch)
tree608ce6569c992e5326547274c381a8ff0a22253a /label-exp/main.go
parent89fc9d86c727aa8dc80232b461a7903a3c16d10e (diff)
downloadsklad-ef904ccf8c244a725ccc5ec63e06d716a312eda8.tar.gz
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Rename the label tool
Diffstat (limited to 'label-exp/main.go')
-rw-r--r--label-exp/main.go280
1 files changed, 0 insertions, 280 deletions
diff --git a/label-exp/main.go b/label-exp/main.go
deleted file mode 100644
index dd4f8c2..0000000
--- a/label-exp/main.go
+++ /dev/null
@@ -1,280 +0,0 @@
-package main
-
-import (
- "errors"
- "html/template"
- "image"
- "image/color"
- "image/draw"
- "image/png"
- "log"
- "net/http"
- "os"
- "strconv"
-
- "github.com/boombuler/barcode"
- "github.com/boombuler/barcode/qr"
-
- "janouch.name/sklad/bdf"
- "janouch.name/sklad/ql"
-)
-
-// scaler is a scaling image.Image wrapper.
-type scaler struct {
- image image.Image
- scale int
-}
-
-// ColorModel implements image.Image.
-func (s *scaler) ColorModel() color.Model {
- return s.image.ColorModel()
-}
-
-// Bounds implements image.Image.
-func (s *scaler) Bounds() image.Rectangle {
- r := s.image.Bounds()
- return image.Rect(r.Min.X*s.scale, r.Min.Y*s.scale,
- r.Max.X*s.scale, r.Max.Y*s.scale)
-}
-
-// At implements image.Image.
-func (s *scaler) At(x, y int) color.Color {
- if x < 0 {
- x = x - s.scale + 1
- }
- if y < 0 {
- y = y - s.scale + 1
- }
- return s.image.At(x/s.scale, y/s.scale)
-}
-
-// leftRotate is a 90 degree rotating image.Image wrapper.
-type leftRotate struct {
- image image.Image
-}
-
-// ColorModel implements image.Image.
-func (lr *leftRotate) ColorModel() color.Model {
- return lr.image.ColorModel()
-}
-
-// Bounds implements image.Image.
-func (lr *leftRotate) Bounds() image.Rectangle {
- r := lr.image.Bounds()
- // Min is inclusive, Max is exclusive.
- return image.Rect(r.Min.Y, -(r.Max.X - 1), r.Max.Y, -(r.Min.X - 1))
-}
-
-// At implements image.Image.
-func (lr *leftRotate) At(x, y int) color.Color {
- return lr.image.At(-y, x)
-}
-
-// -----------------------------------------------------------------------------
-
-var font *bdf.Font
-
-func genLabelForHeight(text string, height, scale int) image.Image {
- // Create a scaled bitmap of the text label.
- textRect, _ := font.BoundString(text)
- textImg := image.NewRGBA(textRect)
- draw.Draw(textImg, textRect, image.White, image.ZP, draw.Src)
- font.DrawString(textImg, image.ZP, text)
-
- scaledTextImg := scaler{image: textImg, scale: scale}
- scaledTextRect := scaledTextImg.Bounds()
-
- remains := height - scaledTextRect.Dy() - 20
-
- width := scaledTextRect.Dx()
- if remains > width {
- width = remains
- }
-
- // Create a scaled bitmap of the QR code.
- qrImg, _ := qr.Encode(text, qr.H, qr.Auto)
- qrImg, _ = barcode.Scale(qrImg, remains, remains)
- qrRect := qrImg.Bounds()
-
- // Combine.
- combinedRect := image.Rect(0, 0, width, height)
- combinedImg := image.NewRGBA(combinedRect)
- draw.Draw(combinedImg, combinedRect, image.White, image.ZP, draw.Src)
- draw.Draw(combinedImg,
- combinedRect.Add(image.Point{X: (width - qrRect.Dx()) / 2, Y: 0}),
- qrImg, image.ZP, draw.Src)
-
- target := image.Rect(
- (width-scaledTextRect.Dx())/2, qrRect.Dy()+20,
- combinedRect.Max.X, combinedRect.Max.Y)
- draw.Draw(combinedImg, target, &scaledTextImg, scaledTextRect.Min, draw.Src)
- return combinedImg
-}
-
-var tmpl = 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}}'>
- </td>
- <td valign=top>
- <fieldset>
- {{ if .Printer }}
-
- <p>Printer: {{ .Printer.Manufacturer }} {{ .Printer.Model }}
- <p>Tape:
- {{ if .Printer.LastStatus }}
- {{ .Printer.LastStatus.MediaWidthMM }} mm &times;
- {{ .Printer.LastStatus.MediaLengthMM }} mm
-
- {{ if .MediaInfo }}
- (offset: {{ .MediaInfo.SideMarginPins }} pt,
- print area: {{ .MediaInfo.PrintAreaPins }} pt)
- {{ else }}
- (unknown media)
- {{ end }}
-
- {{ if .Printer.LastStatus.Errors }}
- {{ range .Printer.LastStatus.Errors }}
- <p>Error: {{ . }}
- {{ end }}
- {{ end }}
-
- {{ end }}
- {{ if .InitErr }}
- {{ .InitErr }}
- {{ end }}
-
- {{ else }}
- <p>Error: {{ .PrinterErr }}
- {{ end }}
- </fieldset>
- <form><fieldset>
- <p><label for=text>Text:</label>
- <input id=text name=text value='{{.Text}}'>
- <label for=scale>Scale:</label>
- <input id=scale name=scale value='{{.Scale}}' size=1>
- <p><input type=submit value='Update'>
- <input type=submit name=print value='Update and Print'>
- </fieldset></form>
- </td>
- </tr></table>
- </body></html>
-`))
-
-func getPrinter() (*ql.Printer, error) {
- printer, err := ql.Open()
- if err != nil {
- return nil, err
- }
- if printer == nil {
- return nil, errors.New("no suitable printer found")
- }
- return printer, nil
-}
-
-func getStatus(printer *ql.Printer) error {
- if err := printer.Initialize(); err != nil {
- return err
- }
- if err := printer.UpdateStatus(); err != nil {
- return err
- }
- return nil
-}
-
-func handle(w http.ResponseWriter, r *http.Request) {
- if err := r.ParseForm(); err != nil {
- http.Error(w, err.Error(), 500)
- return
- }
-
- var (
- initErr error
- mediaInfo *ql.MediaInfo
- )
- printer, printerErr := getPrinter()
- if printerErr == nil {
- defer printer.Close()
- printer.StatusNotify = func(status *ql.Status) {
- log.Printf("\x1b[1mreceived status\x1b[m\n%s", status)
- }
-
- if initErr = getStatus(printer); initErr == nil {
- mediaInfo = ql.GetMediaInfo(
- printer.LastStatus.MediaWidthMM(),
- printer.LastStatus.MediaLengthMM(),
- )
- }
- }
-
- var params = struct {
- Printer *ql.Printer
- PrinterErr error
- InitErr error
- MediaInfo *ql.MediaInfo
- Text string
- Scale int
- }{
- Printer: printer,
- PrinterErr: printerErr,
- InitErr: initErr,
- MediaInfo: mediaInfo,
- Text: r.FormValue("text"),
- }
-
- var err error
- params.Scale, err = strconv.Atoi(r.FormValue("scale"))
- if err != nil {
- params.Scale = 3
- }
-
- var label image.Image
- if mediaInfo != nil {
- label = &leftRotate{image: genLabelForHeight(
- params.Text, mediaInfo.PrintAreaPins, params.Scale)}
- if r.FormValue("print") != "" {
- if err := printer.Print(label); err != nil {
- log.Println("print error:", err)
- }
- }
- }
-
- if _, ok := r.Form["img"]; !ok {
- w.Header().Set("Content-Type", "text/html")
- tmpl.Execute(w, &params)
- return
- }
-
- if mediaInfo == nil {
- http.Error(w, "unknown media", 500)
- return
- }
-
- w.Header().Set("Content-Type", "image/png")
- if err := png.Encode(w, label); err != nil {
- http.Error(w, err.Error(), 500)
- return
- }
-}
-
-func main() {
- var err error
- fi, err := os.Open("../../ucs-fonts-75dpi100dpi/100dpi/luBS24.bdf")
- if err != nil {
- log.Fatalln(err)
- }
- font, err = bdf.NewFromBDF(fi)
- if err != nil {
- log.Fatalln(err)
- }
- if err := fi.Close(); err != nil {
- log.Fatalln(err)
- }
-
- log.Println("starting server")
- http.HandleFunc("/", handle)
- log.Fatal(http.ListenAndServe(":8080", nil))
-}
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-11 08:34:06 +0000