DrawPicture() public method

public DrawPicture ( SKPicture picture, SKMatrix &matrix, SKPaint paint = null ) : void
picture SKPicture
matrix SKMatrix
paint SKPaint
return void
SKCanvas Class Documentation
コード例 #1
0
		public async Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
		{
			ImageSource source = parameters.Source;

			if (parameters.LoadingPlaceholderPath == identifier)
				source = parameters.LoadingPlaceholderSource;
			else if (parameters.ErrorPlaceholderPath == identifier)
				source = parameters.ErrorPlaceholderSource;

			var resolvedData = await Configuration.DataResolverFactory
			                                .GetResolver(identifier, source, parameters, Configuration)
			                                .Resolve(identifier, parameters, token);

			if (resolvedData?.Item1 == null)
				throw new FileNotFoundException(identifier);

			var svg = new SKSvg()
			{
				ThrowOnUnsupportedElement = false,
			};
			SKPicture picture;

			using (var svgStream = resolvedData.Item1)
			{
				picture = svg.Load(resolvedData?.Item1);
			}

			using (var bitmap = new SKBitmap(200, 200, true))
			using (var canvas = new SKCanvas(bitmap))
			{
				float canvasMin = Math.Min(200, 200);
				float svgMax = Math.Max(svg.Picture.Bounds.Width, svg.Picture.Bounds.Height);
				float scale = canvasMin / svgMax;
				var matrix = SKMatrix.MakeScale(scale, scale);
				canvas.DrawPicture(picture, ref matrix);

				using (var image = SKImage.FromBitmap(bitmap))
				{
					var stream = image.Encode()?.AsStream();
					return new Tuple<Stream, LoadingResult, ImageInformation>(stream, resolvedData.Item2, resolvedData.Item3);
				}
			}
		}