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@emoacht
Created August 5, 2023 05:39
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Helper method for Windows.UI.Xaml.Media.Imaging.SvgImageSource
using System;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Xml.Linq;
using Windows.Storage;
using Windows.Storage.Streams;
using Windows.UI.Xaml.Media.Imaging;
public static class SvgImageHelper
{
public static async Task<SvgImageSource> GetImageAsync(StorageFile file)
{
using IRandomAccessStream fs = await file.OpenAsync(FileAccessMode.Read);
using StreamReader sr = new StreamReader(fs.AsStreamForRead(), Encoding.UTF8);
string svgString = await sr.ReadToEndAsync();
XDocument doc = XDocument.Parse(svgString);
double originalWidth = GetValue(doc.Root.Attribute("width")?.Value);
double originalHeight = GetValue(doc.Root.Attribute("height")?.Value);
if (originalWidth == 0 || originalHeight == 0)
return null;
fs.Seek(0);
Debug.WriteLine($"width:{originalWidth}, height:{originalHeight}");
SvgImageSource svgImage = new SvgImageSource
{
RasterizePixelWidth = originalWidth,
RasterizePixelHeight = originalHeight,
};
await svgImage.SetSourceAsync(fs);
return svgImage;
static double GetValue(in string source)
{
if (!string.IsNullOrEmpty(source))
{
Regex pattern = new Regex(@"(?<value>(\d|\.)+)");
Match match = pattern.Match(source);
if (match.Success && double.TryParse(match.Groups["value"].Value, out double value))
return value;
}
return 0;
}
}
}
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