SaveAsSvg.cs
- //
- // This code is part of Document Solutions for PDF demos.
- // Copyright (c) MESCIUS inc. All rights reserved.
- //
- using System;
- using System.IO;
- using System.Linq;
- using System.Drawing;
- using System.Collections.Generic;
- using GrapeCity.Documents.Pdf;
- using GrapeCity.Documents.Svg;
- using GrapeCity.Documents.Drawing;
- using GrapeCity.Documents.Text;
-
- namespace DsPdfWeb.Demos.Basics
- {
- // This sample shows how to use the SaveAsSvg() method to save a PDF
- // page as SVG (scalable vector graphics) image, and how to load
- // and render that image on a new PDF page.
- // The PDF used as the source was generated by the SvgSpecArt sample,
- // but any valid PDF can be used instead.
- public class SaveAsSvg
- {
- public int CreatePDF(Stream stream)
- {
- var doc = new GcPdfDocument();
- var page = doc.NewPage();
-
- var rc = Common.Util.AddNote(
- "We load an existing PDF into a temporary GcPdfDocument, " +
- "save its first page as an SVG image to a stream, and then " +
- "draw that image on the page of the resulting PDF.",
- page);
-
- // Load a one page document into a temp PDF:
- using var fs = File.OpenRead(Path.Combine("Resources", "PDFs", "svg-spec-art.pdf"));
- var docSrc = new GcPdfDocument();
- docSrc.Load(fs);
-
- // Save the first page of the loaded PDF as SVG:
- using var svgStream = new MemoryStream();
- docSrc.Pages[0].SaveAsSvg(svgStream, new SaveAsImageOptions() { BackColor = Color.Transparent });
- // PDF pages can also be saved as SVGZ (compressed SVG) using the ToSvgz() method:
- // docSrc.Pages[0].ToSvgz();
- svgStream.Position = 0;
- // Create a GcSvgDocument from the saved SVG so that we can draw it in the resulting PDF:
- using var svgDoc = GcSvgDocument.FromStream(svgStream);
-
- // For illustration purposes we render the SVG with transparent background
- // on a rectangle with a custom fill and border:
- rc = new RectangleF(0, rc.Bottom, page.Size.Width, page.Size.Height - rc.Bottom);
- rc.Inflate(-4f, -4f);
- page.Graphics.DrawRectangle(rc, Color.DarkGoldenrod);
- page.Graphics.FillRectangle(rc, Color.PaleGoldenrod);
- page.Graphics.DrawSvg(svgDoc, rc);
-
- // Done:
- doc.Save(stream);
- return doc.Pages.Count;
- }
- }
- }
-