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| author | Přemysl Janouch <p@janouch.name> | 2019-04-14 21:25:21 +0200 |
|---|---|---|
| committer | Přemysl Janouch <p@janouch.name> | 2019-04-14 21:25:21 +0200 |
| commit | ea45784554bb02a107b6fdbcd8a352ff1197e08f (patch) | |
| tree | 8d8e2f7c8e50915b905abbc9eb052d74132f1dbf /label-tool | |
| parent | 4dade55387515e3ed153a5901672abdfb7f3654f (diff) | |
| download | sklad-ea45784554bb02a107b6fdbcd8a352ff1197e08f.tar.gz sklad-ea45784554bb02a107b6fdbcd8a352ff1197e08f.tar.xz sklad-ea45784554bb02a107b6fdbcd8a352ff1197e08f.zip | |
sklad: import label printing capability from label-tool
Diffstat (limited to 'label-tool')
| -rw-r--r-- | label-tool/main.go | 52 |
1 files changed, 6 insertions, 46 deletions
diff --git a/label-tool/main.go b/label-tool/main.go index 1d25b1b..b085bf8 100644 --- a/label-tool/main.go +++ b/label-tool/main.go @@ -4,60 +4,20 @@ import ( "errors" "html/template" "image" - "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/imgutil" + "janouch.name/sklad/label" "janouch.name/sklad/ql" ) 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 := imgutil.Scale{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> @@ -183,12 +143,12 @@ func handle(w http.ResponseWriter, r *http.Request) { params.Scale = 3 } - var label image.Image + var img image.Image if mediaInfo != nil { - label = &imgutil.LeftRotate{Image: genLabelForHeight( - params.Text, mediaInfo.PrintAreaPins, params.Scale)} + img = &imgutil.LeftRotate{Image: label.GenLabelForHeight( + font, params.Text, mediaInfo.PrintAreaPins, params.Scale)} if r.FormValue("print") != "" { - if err := printer.Print(label); err != nil { + if err := printer.Print(img); err != nil { log.Println("print error:", err) } } @@ -206,7 +166,7 @@ func handle(w http.ResponseWriter, r *http.Request) { } w.Header().Set("Content-Type", "image/png") - if err := png.Encode(w, label); err != nil { + if err := png.Encode(w, img); err != nil { http.Error(w, err.Error(), 500) return } |