Neuerstellung

- Quelle: https://github.com/oxyplot/oxyplot

Source/OxyPlot.SkiaSharp/SvgExporter.cs

@@ -0,0 +1,44 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="SvgExporter.cs" company="OxyPlot">
+//   Copyright (c) 2020 OxyPlot contributors
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+
+namespace OxyPlot.SkiaSharp
+{
+    using global::SkiaSharp;
+    using System.IO;
+
+    /// <summary>
+    /// Provides functionality to export plots to scalable vector graphics using the SkiaSharp SVG canvas.
+    /// </summary>
+    public class SvgExporter : IExporter
+    {
+        /// <summary>
+        /// Gets or sets the height (in user units) of the output area.
+        /// </summary>
+        public float Height { get; set; }
+
+        /// <summary>
+        /// Gets or sets the width (in user units) of the output area.
+        /// </summary>
+        public float Width { get; set; }
+
+        /// <inheritdoc/>
+        public void Export(IPlotModel model, Stream stream)
+        {
+            using var skStream = new SKManagedWStream(stream);
+            using var canvas = SKSvgCanvas.Create(new SKRect(0, 0, this.Width, this.Height), skStream);
+
+            if (!model.Background.IsInvisible())
+            {
+                canvas.Clear(model.Background.ToSKColor());
+            }
+
+            // SVG export does not work with UseTextShaping=true. However SVG does text shaping by itself anyway, so we can just disable it
+            using var context = new SkiaRenderContext { RenderTarget = RenderTarget.VectorGraphic, SkCanvas = canvas, UseTextShaping = false };
+            model.Update(true);
+            model.Render(context, new OxyRect(0, 0, this.Width, this.Height));
+        }
+    }
+}