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Extra flag -i to invert black and white (negative photo). #7

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Merged
skip2 merged 1 commit into from
Mar 27, 2017
Merged

Extra flag -i to invert black and white (negative photo). #7

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7 changes: 6 additions & 1 deletion qrcode/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ func main() {
outFile := flag.String("o", "", "out PNG file prefix, empty for stdout")
size := flag.Int("s", 256, "image size (pixel)")
textArt := flag.Bool("t", false, "print as text-art on stdout")
negative := flag.Bool("i", false, "invert black and white")
flag.Usage = func() {
fmt.Fprintf(os.Stderr, `qrcode -- QR Code encoder in Go
https://github.com/skip2/go-qrcode
Expand Down Expand Up @@ -56,11 +57,15 @@ Usage:
checkError(err)

if *textArt {
art := qr2String(q, false)
art := qr2String(q, *negative)
fmt.Println(art)
return
}

if *negative {
q.ForegroundColor, q.BackgroundColor = q.BackgroundColor, q.ForegroundColor
}

var png []byte
png, err = q.PNG(*size)
checkError(err)
Expand Down