//// This code is part of Document Solutions for PDF .NET demos.// Copyright (c) MESCIUS inc. All rights reserved.//using System.IO;using System.Drawing;using GrapeCity.Documents.Pdf;using GrapeCity.Documents.Text;using GrapeCity.Documents.Drawing;
namespace DsPdfWeb.Demos{    // This sample demonstrates how to draw round rectangles    // using dedicated DrawRoundRect/FillRoundRect methods.    // It also shows how the same result may be achieved with    // graphics paths.    public class RoundRectangle    {        public int CreatePDF(Stream stream)        {            var doc = new GcPdfDocument();            var page = doc.NewPage();            var g = page.Graphics;
            var rc = Common.Util.AddNote(                "GcPdfGraphics has dedicated methods to easily draw and fill rectangles with rounded corners. " +                "This sample also shows how the same result may be achieved using graphics paths. " +                "While they are not really needed for drawing round rectangles, graphics paths allow " +                "to draw and fill arbitrary figures with complex geometries.",                page);
            // Rounded rectangle's radii:            float rx = 36, ry = 24;
            // Using dedicated methods to draw and fill round rectangles:            var rEasy = new RectangleF(rc.Left, rc.Bottom + 36, 144, 72);            g.FillRoundRect(rEasy, rx, ry, Color.PaleGreen);            g.DrawRoundRect(rEasy, rx, ry, Color.Blue, 4);            // Add a label:            var tf = new TextFormat() { Font = StandardFonts.Times, FontSize = 14 };            g.DrawString("The easy way.", tf, rEasy, TextAlignment.Center, ParagraphAlignment.Center, false);
            // Using graphics path to achieve the same result:            var rHard = rEasy;            rHard.Offset(0, rEasy.Height + 36);            var path = MakeRoundRect(g, rHard, rx, ry);            g.FillPath(path, Color.PaleVioletRed);            g.DrawPath(path, Color.Purple, 4);            // Add a label:            g.DrawString("The hard way.", tf, rHard, TextAlignment.Center, ParagraphAlignment.Center, false);
            // Done:            doc.Save(stream);            return doc.Pages.Count;        }
        // This method shows how to create a graphics path that may be used        // to fill or draw arbitrary shapes on a GcGraphics.        private static IPath MakeRoundRect(GcGraphics g, RectangleF rc, float rx, float ry)        {            var path = g.CreatePath();            var sz = new SizeF(rx, ry);            // Start from horizontal top left:            path.BeginFigure(new PointF(rc.Left + rx, rc.Top));            path.AddLine(new PointF(rc.Right - rx, rc.Top));            path.AddArc(new ArcSegment() { Point = new PointF(rc.Right, rc.Top + ry), SweepDirection = SweepDirection.Clockwise, Size = sz });            path.AddLine(new PointF(rc.Right, rc.Bottom - ry));            path.AddArc(new ArcSegment() { Point = new PointF(rc.Right - rx, rc.Bottom), SweepDirection = SweepDirection.Clockwise, Size = sz });            path.AddLine(new PointF(rc.Left + rx, rc.Bottom));            path.AddArc(new ArcSegment() { Point = new PointF(rc.Left, rc.Bottom - ry), SweepDirection = SweepDirection.Clockwise, Size = sz });            path.AddLine(new PointF(rc.Left, rc.Top + ry));            path.AddArc(new ArcSegment() { Point = new PointF(rc.Left + rx, rc.Top), SweepDirection = SweepDirection.Clockwise, Size = sz });            path.EndFigure(FigureEnd.Closed);            return path;        }    }}