SvgClipArt.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.Drawing;
- using System.Linq;
- using System.Collections.Generic;
- using GrapeCity.Documents.Pdf;
- using GrapeCity.Documents.Text;
- using GrapeCity.Documents.Svg;
- using GCTEXT = GrapeCity.Documents.Text;
- using GCDRAW = GrapeCity.Documents.Drawing;
- using DsPdfWeb.Demos.Common;
-
- namespace DsPdfWeb.Demos
- {
- // Use GcSvgDocument to render SVG files on PDF pages.
- // The SVG clip art used in this sample is from freesvg.org.
- public class SvgClipArt
- {
- public int CreatePDF(Stream stream)
- {
- // Load images from the resources folder:
- var images = new List<(string, GcSvgDocument)>();
- foreach (var fname in Directory.GetFiles(Path.Combine("Resources", "SvgClipArt"), "*", SearchOption.AllDirectories))
- images.Add((Path.GetFileName(fname), GcSvgDocument.FromFile(fname)));
- images.Shuffle();
-
- var doc = new GcPdfDocument();
- // Font and format for captions:
- const float sMargin = 72f / 6;
- var font = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "segoeui.ttf"));
- var tf = new TextFormat() { Font = font, FontSize = sMargin * 0.65f };
-
- // Set up a 3x4 layout grid with 1/2" margins all around:
- const float margin = 36;
- const int rows = 4;
- const int cols = 3;
- float gapx = 72f / 4, gapy = gapx;
- float sWidth = (doc.PageSize.Width - margin * 2 + gapx) / cols;
- float sHeight = (doc.PageSize.Height - margin * 2 + gapy) / rows;
- if (sWidth > sHeight)
- {
- gapx += sWidth - sHeight;
- sWidth = sHeight;
- }
- else
- {
- gapy += sHeight - sWidth;
- sHeight = sWidth;
- }
- var ip = new PointF(margin, margin);
-
- // Render all images within the grid, adding new pages as needed:
- var g = doc.NewPage().Graphics;
- for (int i = 0; i < images.Count(); ++i)
- {
- // Draw border around image:
- var rect = new RectangleF(ip, new SizeF(sWidth - gapx, sHeight - gapy));
- g.FillRectangle(rect, Color.LightGray);
- g.DrawRectangle(rect, Color.Black, 0.5f);
- rect.Inflate(-sMargin, -sMargin);
-
- // Draw the SVG:
- var svg = images[i].Item2;
- var s = svg.GetIntrinsicSize(SvgLengthUnits.Points);
- if (s.Width > 0 && s.Height > 0)
- {
- // If image proportions are different from our target rectangle,
- // we resize the rectangle centering the image in it:
- var qSrc = s.Width / s.Height;
- var qTgt = rect.Width / rect.Height;
- if (qSrc < qTgt)
- rect.Inflate(rect.Width * (qSrc / qTgt - 1) / 2, 0);
- else if (qSrc > qTgt)
- rect.Inflate(0, rect.Height * (qTgt / qSrc - 1) / 2);
- }
- // Render the SVG:
- g.DrawSvg(svg, rect);
-
- // Print image file name as caption in the bottom slide margin:
- g.DrawString(Path.GetFileName(images[i].Item1), tf,
- new RectangleF(rect.X, rect.Bottom, rect.Width, sMargin),
- TextAlignment.Center, ParagraphAlignment.Near, false);
- ip.X += sWidth;
- if (ip.X + sWidth > doc.PageSize.Width && i < images.Count() - 1)
- {
- ip.X = margin;
- ip.Y += sHeight;
- if (ip.Y + sHeight > doc.PageSize.Height)
- {
- g = doc.NewPage().Graphics;
- ip.Y = margin;
- }
- }
- }
- // Done:
- doc.Save(stream);
- // Dispose images after saving the PDF:
- images.ForEach(t_ => t_.Item2.Dispose());
- return doc.Pages.Count;
- }
- }
- }
-