ZXing for SkiaSharp

[ndenkha]

Hi,

I found this package ZXing.Net.Bindings.SkiaSharp version 0.16.12, but it points to the same ZXing.Net which relies on GDI+.
They both seem to be the same ZXing.Net and support for SkiaSharp.

I've modified all my GDI+ to SkiaSharp, and I use ZXing.Net to read QR codes, and there is this call that relies on System.Drawing.Bitmap, which I can't find a corresponding SkiaSharp SKBitmap for it.
LuminanceSource lumSource = new BitmapLuminanceSource(gdiBitmap);

Any clarification of this other package and help how I can use ZXing.Net with SkiaSharp will be appreciated.

[micjahn]

It should be very easy.
Add the package ZXing.Net.Bindings.SkiaSharp to your project.
Create your reader instance, take your SKBitmap instance and call the method Decode:

var reader = new ZXing.SkiaSharp.BarcodeReader();
var skBitmap = new SKBitmap...
var result = reader.Decode(skBitmap);

The package contains the following additional classes of you need them:
ZXing.SkiaSharp.SKBitmapLuminanceSource
ZXing.SkiaSharp.BarcodeWriter
ZXing.SkiaSharp.Rendering.SKBitmapRenderer

[ndenkha]

Excellent! so there is no more need for LuminanceSource.
Thank you!

[yassin-ajanif]

the same topic but with a different issue.
i installed the package ZXing.Net.Bindings.SkiaSharp package but i couldn't know how to save a generated barcode image using skiasharp the code you see is using system.drawing which is not working for me with avalonia UI template.

private static bool GenerateBarcode(double widthInCentimeters)
{
// Assuming 100 DPI (dots per inch) for simplicity
int dpi = 100;

    // Calculate width and height in pixels
    int widthInPixels = (int)(widthInCentimeters * dpi / 2.54);
    int heightInPixels = widthInPixels / 2; // Assuming 1:2 aspect ratio

    string text = DateTime.Now.ToString("yyyyMMddHHmmssfff");

    BarcodeWriter writer = new BarcodeWriter
    {
        Format = BarcodeFormat.CODE_128,
        Options = new EncodingOptions
        {
            Height = heightInPixels,
            Width = widthInPixels
        }
    };
    Bitmap barcodeBitmap = writer.Write(text);

    // Get desktop path
    string desktopPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);

    // Save the generated barcode image to the desktop path
    string filePath = Path.Combine(desktopPath, $"{text}.png");
    barcodeBitmap.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);

    return true;
}