我可以使用 SkiaSharp 将 SVG 渲染为 PNG 吗？

Question

I'm trying to use SkiaSharp to convert an SVG file to PNG. I know there are many alternatives, but I wanted to evaluate it's SVG load support.

Is this possible? I tried this:

var svg = new SKSvg(new SKSize(200, 200));
svg.Load("image.svg");

var bitmap = new SKBitmap((int)svg.CanvasSize.Width, (int)svg.CanvasSize.Height);
var canvas = new SKCanvas(bitmap);
canvas.DrawPicture(svg.Picture);
canvas.Flush();
canvas.Save();

using (var image = SKImage.FromBitmap(bitmap))
using (var data = image.Encode(SKImageEncodeFormat.Png, 80))
{
    // save the data to a stream
    using (var stream = File.OpenWrite("image.png"))
    {
        data.SaveTo(stream);
    }
}

But I just get an empty image.

Answer 1

Yes it can. The above code works against test SVG shipped with SkiaSharp. https://github.com/mono/SkiaSharp/blob/8ca298b448810cf65ab13cd7b2de94c627a033c1/tests/Content/images/logos.svg .

My SVG may not be supported. I will post different question if I want to investigate further.

Answer 2

Use this Code. i painted a flag from a svg web service.

  var svg = new SkiaSharp.Extended.Svg.SKSvg();
  svg.Load(msSvg);
  using (var bitMap = new SKBitmap((int)svg.CanvasSize.Width, (int)svg.CanvasSize.Height))
  using (SKCanvas canvas = new SKCanvas(bitMap))
  {
    canvas.DrawPicture(svg.Picture);
    canvas.Flush();
    canvas.Save();

    using (SKImage image = SKImage.FromBitmap(bitMap))
    {
      using (SKData data = image.Encode(SKEncodedImageFormat.Png, 80))
      {
        MemoryStream memStream = new MemoryStream(); 
        data.SaveTo(memStream);
        memStream.Seek(0, SeekOrigin.Begin);
        this._flagImage = ImageSource.FromStream(() => memStream);
      }
    }
  }