/
writeWeb.go
39 lines (35 loc) · 977 Bytes
/
writeWeb.go
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package qrcode
import (
"bytes"
"image/jpeg"
"image/png"
"net/http"
"github.com/boombuler/barcode"
"github.com/boombuler/barcode/qr"
)
func WritePng(w http.ResponseWriter, content string, edges ...int) error {
edgeLen := 300
if len(edges) > 0 && edges[0] > 100 && edges[0] < 2000 {
edgeLen = edges[0]
}
img, _ := qr.Encode(content, qr.L, qr.Unicode)
img, _ = barcode.Scale(img, edgeLen, edgeLen)
buff := bytes.NewBuffer(nil)
png.Encode(buff, img)
w.Header().Set("Content-Type", "image/png")
_, err := w.Write(buff.Bytes())
return err
}
func WriteJpg(w http.ResponseWriter, content string, edges ...int) error {
edgeLen := 300
if len(edges) > 0 && edges[0] > 100 && edges[0] < 2000 {
edgeLen = edges[0]
}
img, _ := qr.Encode(content, qr.L, qr.Unicode)
img, _ = barcode.Scale(img, edgeLen, edgeLen)
buff := bytes.NewBuffer(nil)
jpeg.Encode(buff, img, nil)
w.Header().Set("Content-Type", "image/jpg")
_, err := w.Write(buff.Bytes())
return err
}