//// This code is part of Document Solutions for Imaging demos.// Copyright (c) MESCIUS inc. All rights reserved.//using System.IO;using System.Drawing;using GrapeCity.Documents.Drawing;using GrapeCity.Documents.Text;using GrapeCity.Documents.Imaging;using GrapeCity.Documents.Imaging.Skia;using GrapeCity.Documents.Imaging.Windows;using GCTEXT = GrapeCity.Documents.Text;
namespace DsImagingWeb.Demos{    // This example demonstrates the differences in fidelity between texts    // rendered on bitmaps using the different DsImaging libraries:    // - DsImaging (cross-platform, package GrapeCity.Documents.Imaging);    // - DsImaging.Skia (cross-platform, package GrapeCity.Documents.Imaging.Skia);    // - DsImaging.Windows (Windows only, package GrapeCity.Documents.Imaging.Windows).    // Note that the results are rather noticeable here because the text is rendered    // using a very small font, and then significantly enlarged when dawn on the    // resulting image generated by the sample. In most real-life applications    // the differences are very subtle if noticeable at all.    public class GcLibsComparison    {        public GcBitmap GenerateImage(Size pixelSize, float dpi, bool opaque, string[] sampleParams = null)        {            const string text = "Skia is an open source 2D graphics library which provides common APIs that work across a variety of hardware and software platforms.";            int q = 4;            int width = pixelSize.Width / q;            int height = pixelSize.Height / (q * 3);            int margin = 12;            var tf = new TextFormat            {                Font = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "FreeSans.ttf")),                FontSize = 10            };            string msg = $"Text with font size {tf.FontSize} rendered using {{0}} and enlarged x{q}:";
            using var gcBmp = new GcBitmap(width, height, false);            using (var g = gcBmp.CreateGraphics(Color.Transparent))            {                var tl = g.CreateTextLayout();                tl.MaxWidth = width;                tl.MarginAll = margin;                tl.Append(text, tf);                g.DrawTextLayout(tl, PointF.Empty);            }
            using var gcSkiaBmp = new GcSkiaBitmap(width, height, false);            using (var g = gcSkiaBmp.CreateGraphics(Color.Transparent))            {                var tl = g.CreateTextLayout();                tl.MaxWidth = width;                tl.MarginAll = margin;                tl.Append(text, tf);                g.DrawTextLayout(tl, PointF.Empty);            }
            GcWicBitmap gcWicBmp = null;            if (GcWicBitmap.IsSupported)            {                gcWicBmp = new GcWicBitmap(width, height, false);                using (var g = gcWicBmp.CreateGraphics(Color.Transparent))                {                    var tl = g.CreateTextLayout();                    tl.MaxWidth = width;                    tl.MarginAll = margin;                    tl.Append(text, tf);                    g.DrawTextLayout(tl, PointF.Empty);                }            }
            var bmp = new GcBitmap(pixelSize.Width, pixelSize.Height, opaque);            using (var g = bmp.CreateGraphics(Color.White))            {                g.Renderer.InterpolationMode = InterpolationMode.NearestNeighbor;                var fs = 16;                var dy = pixelSize.Height / 3;                tf.FontSize = fs;                g.DrawString(string.Format(msg, "GcBitmapGraphics (cross-platform)"), tf, new PointF(margin / 3, margin / 3));                var rc = new RectangleF(0, fs * 2, width * q, height * q - fs * 2);                rc.Inflate(-margin, -margin);                g.DrawImage(gcBmp, rc, null, ImageAlign.StretchImage);                g.DrawRoundRect(rc, margin, Color.MediumVioletRed);
                g.DrawString(string.Format(msg, "GcSkiaGraphics (cross-platform)"), tf, new PointF(margin / 3, dy + margin / 3));                rc = new RectangleF(0, fs * 2 + dy, width * q, height * q - fs * 2);                rc.Inflate(-margin, -margin);                g.DrawImage(gcSkiaBmp, rc, null, ImageAlign.StretchImage);                g.DrawRoundRect(rc, margin, Color.MediumVioletRed);
                g.DrawString(string.Format(msg, "GcWicBitmapGraphics (Windows-only)"), tf, new PointF(margin / 3, dy * 2 + margin / 3));                rc = new RectangleF(0, fs * 2 + dy * 2, width * q, height * q - fs * 2);                rc.Inflate(-margin, -margin);                if (gcWicBmp != null)                {                    g.DrawImage(gcWicBmp, rc, null, ImageAlign.StretchImage);                }                else                {                    var tl = g.CreateTextLayout();                    tl.MaxWidth = rc.Width;                    tl.MarginAll = margin;                    tl.DefaultFormat.Font = tf.Font;                    tl.DefaultFormat.FontSize = 16;                    tl.DefaultFormat.ForeColor = Color.OrangeRed;                    tl.AppendLine(                        "Looks like this demo is not running on a Windows system, so WIC (GcWicBitmap, GcWicBitmapGraphics) " +                        "is not supported. To see how text rendered using GcWicBitmapGraphics looks, download this demo project " +                        "and run it on a Windows system.");                    g.DrawTextLayout(tl, rc.Location);                }                g.DrawRoundRect(rc, margin, Color.MediumVioletRed);            }            if (gcWicBmp != null)                gcWicBmp.Dispose();
            return bmp;        }    }}