//// 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 GrapeCity.Documents.Drawing;using GCTEXT = GrapeCity.Documents.Text;
namespace DsImagingWeb.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 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;            using (var g = bmp.CreateGraphics(Color.RoyalBlue))            {                var rc = Common.Util.AddNote(                "GcGraphics 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.",                g);
                // 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 + Inch / 2, Inch * 2, Inch);                g.FillRoundRect(rEasy, rx, ry, Color.PaleGreen);                g.DrawRoundRect(rEasy, rx, ry, Color.Blue, 4);                // Add a label:                var tf = new TextFormat()                {                    Font = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "FreeSerif.ttf")),                    FontSize = Inch / 6                };                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 + Inch / 2);                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:            }            // Done:            return bmp;        }
        // This method shows how to create a graphics path that may be used        // to fill or draw arbitrary shapes on a GcGraphics.        private 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;        }    }}