//// This code is part of Document Solutions for PDF .NET 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{    // This sample shows how to render SVG icons included in the "Free for Web" download of Font Awesome.    // The sample code also shows how to change the default color of the glyphs.    public class SvgFontAwesome    {        private Random _rnd = Util.NewRandom();
        public int CreatePDF(Stream stream, int paramsIdx = 0)        {            return CreatePDF(stream, GetSampleParamsList()[paramsIdx]);        }
        public int CreatePDF(Stream stream, string[] sampleParams)        {            // Load Font Awesome glyphs from the resources:            var images = new List<(string, GcSvgDocument)>();            var colorize = sampleParams[3] == "colorize";
            if (colorize)            {                foreach (var fname in Directory.GetFiles(Path.Combine("Resources", "FontAwesome"), "*.svg", SearchOption.AllDirectories))                    images.Add((fname, GcSvgDocument.FromFile(fname)));                // Randomize image order:                images.Shuffle();            }            else            {                foreach (var fname in Directory.GetFiles(Path.Combine("Resources", "FontAwesome", sampleParams[3]), "*.svg", SearchOption.TopDirectoryOnly))                    images.Add((fname, GcSvgDocument.FromFile(fname)));                // Sort images by file name:                images.Sort(new Comparison<(string, GcSvgDocument)>((t1_, t2_) => StringComparer.OrdinalIgnoreCase.Compare(t1_.Item1, t2_.Item1)));            }
            var doc = new GcPdfDocument();            // Font and format for captions:            const float sMargin = 72f / 8;            var font = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "NotoSans-Regular.ttf"));            var tf = new TextFormat() { Font = font, FontSize = sMargin * 0.65f };
            // Set up a layout grid:            var background = Color.White;            var foreground = Color.Black;            const float margin = 36;            const int rows = 12;            const int cols = 9;            float gapx = 72f / 8, 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, background);                g.DrawRectangle(rect, foreground, 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);                }                //                if (colorize)                    svg.RootSvg.Fill = new SvgPaint(Color.FromArgb(_rnd.Next(256), _rnd.Next(256), _rnd.Next(256)));
                // Render the SVG:                g.DrawSvg(svg, rect);
                // Print the icon file name as caption in the bottom margin:                g.DrawString(Path.GetFileNameWithoutExtension(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;        }
        public static List<string[]> GetSampleParamsList()        {            // Strings are name, description, info, rest are arbitrary strings:            return new List<string[]>()            {                new string[] { "@b-svg/Font Awesome - brands", "Render Font Awesome SVG glyphs from the \"svgs/brands\" directory",                    "This sample renders the SVG icons included in the \"svgs/brands/\" directory of the Font Awesome \"Free for Web\" download, sorted by file name.",                    "brands" },                new string[] { "@b-svg/Font Awesome - regular", "Render Font Awesome SVG glyphs from the \"svgs/regular\" directory",                    "This sample renders the SVG icons included in the \"svgs/regular/\" directory of the Font Awesome \"Free for Web\" download, sorted by file name.",                    "regular" },                new string[] { "@b-svg/Font Awesome - solid", "Render Font Awesome SVG glyphs from the \"svgs/solid\" directory",                    "This sample renders the SVG icons included in the \"svgs/solid/\" directory of the Font Awesome \"Free for Web\" download, sorted by file name.",                    "solid" },                new string[] { "@b-svg/Font Awesome - colorize", "Render Font Awesome SVG glyphs using random order and colors",                    "This sample renders the SVG icons included in the \"svgs/\" directory of the Font Awesome \"Free for Web\" download, randomizing the order of the icons and their colors.",                    "colorize" },            };        }    }}