//// 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.Imaging;using GrapeCity.Documents.Text;using GCTEXT = GrapeCity.Documents.Text;
namespace DsImagingWeb.Demos{    // This sample demonstrates how to display ellipsis    // if a string does not fit in the allocated space.    public class TextTrimming    {        public GcBitmap GenerateImage(Size pixelSize, float dpi, bool opaque, string[] sampleParams = null)        {            var bmp = new GcBitmap(pixelSize.Width, pixelSize.Height, true, dpi, dpi);            var Inch = dpi;            const float fontSize = 12;            using (var g = bmp.CreateGraphics(Color.White))            {                var str = "This is a long line of text which does not fit in the allocated space.";                var wid = Inch * 4;                var dy = 0.3f;
                var rc = Common.Util.AddNote(                    "TextLayout allows displaying ellipsis (or other character) " +                    "at the end of a text line that did not fit in the allocated space.\n" +                    "To use trimming, set TrimmingGranularity to Character or Word " +                    "(the default is None). Trimming will kick in if WrapMode is NoWrap, " +                    "and the text is too long. Wrapped text may also display trimming if " +                    "the layout width is too narrow to fit a single word.\n" +                    "Below are examples of text untrimmed, trimmed to character and to word. " +                    "The next line demonstrates a different trimming character (tilde in this case). " +                    "Finally, the last line shows how to trim text (respecting TrimmingGranularity) " +                    "without adding any trimming character.",                    g);                var top = rc.Bottom + 36;
                var ip = new PointF(rc.Left, top);
                var tl = g.CreateTextLayout();                tl.DefaultFormat.Font = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "NotoSerif-Regular.ttf"));                tl.DefaultFormat.FontSize = fontSize;                tl.MaxWidth = wid;                tl.WrapMode = WrapMode.NoWrap;
                // TrimmingGranularity is None by default:                tl.Append(str);                tl.PerformLayout(true);                g.DrawTextLayout(tl, ip);                ip.Y += tl.ContentHeight + dy;
                // Character trimming:                tl.TrimmingGranularity = TrimmingGranularity.Character;                // NOTE that the recalculateGlyphsBeforeLayout parameter to PerformLayout                // may be false after the first call, as the text/font has not changed:                tl.PerformLayout(false);                g.DrawTextLayout(tl, ip);                ip.Y += tl.ContentHeight + dy;
                // Word trimming:                tl.TrimmingGranularity = TrimmingGranularity.Word;                tl.PerformLayout(false);                g.DrawTextLayout(tl, ip);                ip.Y += tl.ContentHeight + dy;
                // tl.EllipsisCharCode is HorizontalEllipsis (0x2026) by default.                // Change it to a tilde:                tl.EllipsisCharCode = 0x007E;                tl.PerformLayout(false);                g.DrawTextLayout(tl, ip);                ip.Y += tl.ContentHeight + dy;
                // Finally, we may set tl.EllipsisCharCode to 0 to trim text                // without rendering any trimming character:                tl.EllipsisCharCode = 0;                tl.PerformLayout(false);                g.DrawTextLayout(tl, ip);                ip.Y += tl.ContentHeight + dy;
                g.DrawRectangle(new RectangleF(rc.Left, top, wid, ip.Y - top), Color.OrangeRed);
                // Draw border around the whole image:                g.DrawRectangle(new RectangleF(0, 0, bmp.Width, bmp.Height), Color.DarkSlateBlue, 4);            }            // Done:            return bmp;        }    }}