/// <summary>
/// 带图标二维码，加上图标后请把容错级别调高，这样可以提高识别成功率
/// </summary>
public static byte[] GetQrCodeWithIconBytes(this QrCode coder,
string content, string icon_path, int size = QrCode.QRCODE_SIZE)
{
if (!File.Exists(icon_path))
{
throw new Exception("二维码水印图片不存在");
}
var bs = coder.GetQrCodeBytes(content, size);
bs = coder.AddIcon(bs, icon_path);
return(bs);
}
/// <summary>
/// 随机调色
/// </summary>
public static byte[] AddRandomHue(this QrCode coder, byte[] bs)
{
using (var ms = new MemoryStream())
{
using (var img = SixLabors.ImageSharp.Image.Load(bs))
{
var ran = new Random((int)DateTime.Now.Ticks);
img.Mutate(x => x.Hue(ran.RealNext(360 - 1)));
img.Save(ms, new SixLabors.ImageSharp.Formats.Png.PngEncoder());
}
return(ms.ToArray());
}
}
/// <summary>
/// 随机调色
/// </summary>
public static byte[] AddRandomHue(this QrCode coder, byte[] bs)
{
using (var ms = new MemoryStream())
{
using (var factory = new ImageFactory(preserveExifData: false))
{
var ran = new Random((int)DateTime.Now.Ticks);
factory.Load(bs).Hue(ran.RealNext(360 - 1)).Save(ms);
}
return(ms.ToArray());
}
}
/// <summary>
/// 添加icon
/// </summary>
public static byte[] AddIcon(this QrCode coder, byte[] bs, string icon_path)
{
using (var ms = new MemoryStream())
{
using (var img = SixLabors.ImageSharp.Image.Load(bs))
{
using (var icon = SixLabors.ImageSharp.Image.Load(icon_path))
{
icon.Mutate(x => x.Resize(width: img.Width / 5, height: img.Height / 5));
var location = new SixLabors.Primitives.Point()
{
X = (img.Width - icon.Width) / 2,
Y = (img.Height - icon.Height) / 2
};
img.Mutate(x => x.DrawImage(icon, 1, location));
img.Save(ms, new SixLabors.ImageSharp.Formats.Png.PngEncoder());
}
}
return(ms.ToArray());
}
}
/// <summary>
/// 给二维码添加背景图片
/// </summary>
public static byte[] AddBackgroundImage(this QrCode coder, byte[] bs, byte[] background,
(double width_scale, double height_scale)?scale = null)