/// <summary>
/// Creates a black & white PNG of the QR code, using 1-bit grayscale.
/// </summary>
public byte[] GetGraphic(int pixelsPerModule)
{
using (var png = new PngBuilder())
{
var size = QrCodeData.ModuleMatrix.Count * pixelsPerModule;
png.WriteHeader(size, size, 1, PngBuilder.ColorType.Greyscale);
png.WriteScanlines(DrawScanlines(pixelsPerModule));
png.WriteEnd();
return(png.GetBytes());
}
}
/// <summary>
/// Creates a black & white PNG of the QR code, using 1-bit grayscale.
/// </summary>
public byte[] GetGraphic(int pixelsPerModule, bool drawQuietZones = true)
{
using (var png = new PngBuilder())
{
var size = (this.QrCodeData.ModuleMatrix.Count - (drawQuietZones ? 0 : 8)) * pixelsPerModule;
png.WriteHeader(size, size, 1, PngBuilder.ColorType.Greyscale);
png.WriteScanlines(this.DrawScanlines(pixelsPerModule, drawQuietZones));
png.WriteEnd();
return(png.GetBytes());
}
}
/// <summary>
/// Creates 2-color PNG of the QR code, using 1-bit indexed color. Accepts 3-byte RGB colors for normal images and 4-byte RGBA-colors for transparent images.
/// </summary>
public byte[] GetGraphic(int pixelsPerModule, byte[] darkColorRgba, byte[] lightColorRgba)
{
using (var png = new PngBuilder())
{
var size = this.m_xCodeData.ModuleMatrix.Count * pixelsPerModule;
png.WriteHeader(size, size, 1, PngBuilder.ColorType.Indexed);
png.WritePalette(darkColorRgba, lightColorRgba);
png.WriteScanlines(this.DrawScanlines(pixelsPerModule));
png.WriteEnd();
return(png.GetBytes());
}
}