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authorPřemysl Janouch <p@janouch.name>2019-04-14 21:25:21 +0200
committerPřemysl Janouch <p@janouch.name>2019-04-14 21:25:21 +0200
commitea45784554bb02a107b6fdbcd8a352ff1197e08f (patch)
tree8d8e2f7c8e50915b905abbc9eb052d74132f1dbf /label-tool
parent4dade55387515e3ed153a5901672abdfb7f3654f (diff)
downloadsklad-ea45784554bb02a107b6fdbcd8a352ff1197e08f.tar.gz
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sklad: import label printing capability from label-tool
Diffstat (limited to 'label-tool')
-rw-r--r--label-tool/main.go52
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
}