Feat svg output format (#890)

Source/QuestPDF/Drawing/DocumentGenerator.cs

@@ -51,6 +51,16 @@ internal static ICollection<byte[]> GenerateImages(IDocument document, ImageGene
 
  return canvas.Images;
  }
+
+ internal static ICollection<string> GenerateSvg(IDocument document)
+ {
+ ValidateLicense();
+
+ var canvas = new SvgCanvas();
+ RenderDocument(canvas, document, document.GetSettings());
+
+ return canvas.Images;
+ }
 
  private static void ValidateLicense()
  {

Source/QuestPDF/Drawing/ImageCanvas.cs

@@ -20,6 +20,11 @@ public ImageCanvas(ImageGenerationSettings settings)
  Settings = settings;
  }
 
+ ~ImageCanvas()
+ {
+ Bitmap?.Dispose();
+ }
+
  public override void BeginDocument()
  {
 

Source/QuestPDF/Drawing/SvgCanvas.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using QuestPDF.Drawing.Exceptions;
+using QuestPDF.Helpers;
+using QuestPDF.Infrastructure;
+using QuestPDF.Skia;
+
+namespace QuestPDF.Drawing
+{
+ internal sealed class SvgCanvas : SkiaCanvasBase
+ {
+ internal SkWriteStream WriteStream { get; set; }
+ internal ICollection<string> Images { get; } = new List<string>();
+
+ ~SvgCanvas()
+ {
+ WriteStream?.Dispose();
+ }
+
+ public override void BeginDocument()
+ {
+
+ }
+
+ public override void EndDocument()
+ {
+
+ }
+
+ public override void BeginPage(Size size)
+ {
+ WriteStream?.Dispose();
+ WriteStream = new SkWriteStream();
+ Canvas = SkSvgCanvas.CreateSvg(size.Width, size.Height, WriteStream);
+ }
+
+ public override void EndPage()
+ {
+ Canvas.Save();
+ Canvas.Dispose();
+
+ using var data = WriteStream.DetachData();
+ var svgImage = Encoding.UTF8.GetString(data.ToBytes());
+ Images.Add(svgImage);
+
+ WriteStream.Dispose();
+ }
+ }
+}

Source/QuestPDF/Fluent/GenerateExtensions.cs

@@ -150,5 +150,17 @@ public static void GenerateImages(this IDocument document, GenerateDocumentImage
  }
 
  #endregion
+
+ #region SVG
+
+ /// <summary>
+ /// Generates the document as a series of SVG images and returns them as a collection of strings.
+ /// </summary>
+ public static ICollection<string> GenerateSvg(this IDocument document)
+ {
+ return DocumentGenerator.GenerateSvg(document);
+ }
+
+ #endregion
  }
 }