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Quiet Zones
Florian edited this page Dec 7, 2017
·
1 revision
The library doesn't take care of the quiet zones which are required by some barcode types. You use the following wrapper to create a quiet zone:
type QuietZone struct {
width int
barcode barcode.Barcode
}
func (qz QuietZone) At(x, y int) color.Color {
bounds := qz.barcode.Bounds()
w := bounds.Dx()
h := bounds.Dy()
if x < qz.width || x >= w+qz.width || y < qz.width || y >= h+qz.width {
return color.White
}
return wb.barcode.At(x-qz.width, y-qz.width)
}
func (qz QuietZone) Bounds() image.Rectangle {
b := qz.barcode.Bounds()
return image.Rect(0, 0, b.Dx()+2*qz.width, b.Dy()+2*qz.width)
}
func (qz QuietZone) ColorModel() color.Model {
return qz.barcode.ColorModel()
}
func Main() {
bc, _ := qr.Encode("Foobar", qr.L, qr.Auto)
var img image.Image = QuietZone{10, bc}
png.Encode(file, img)
}