//// This code is part of Document Solutions for Imaging demos.// Copyright (c) MESCIUS inc. All rights reserved.//using System.Drawing;using System.Collections.Generic;using GrapeCity.Documents.Drawing;using GrapeCity.Documents.Text;using GrapeCity.Documents.Imaging;using GCDRAW = GrapeCity.Documents.Drawing;
namespace DsImagingWeb.Demos{    // This demo illustrates the results of using the GcGraphics.DrawRotatedText() method    // with different combinations of arguments.    // The DrawRotatedText() method draws text rotated within a specified rectangle    // similar to how rotated text is drawn in MS Excel cells without borders.    // See also the DrawSlantedText_0 demo.    public class DrawRotatedText    {        static string[] s_names = new []        {            "Rotate Counter-clockwise",            "Rotate Clockwise",            "Vertical Stacking",            "Varying RotatedTextAlignment",            "Vertical Stacking Align",            "Horizontal Stacking Align",        };
        public GcBitmap GenerateImage(Size pixelSize, float dpi, bool opaque, string[] sampleParams = null)        {            sampleParams ??= GetSampleParamsList()[0];
            var bmp = new GcBitmap(pixelSize.Width, pixelSize.Height, opaque, dpi, dpi);            using var g = bmp.CreateGraphics(Color.White);            // Set up some values to manage layout:            var margin = g.Resolution;            var gap = g.Resolution;            var w = pixelSize.Width * 0.3f;            var h = w;
            if (sampleParams[0] == s_names[0])            {                // Draw text at different negative angles:                Draw(g, q0(), angle: -90, false, RotatedTextAlignment.BottomLeft, TextAlignment.Leading);                Draw(g, q1(), angle: -60, false, RotatedTextAlignment.BottomLeft, TextAlignment.Leading);                Draw(g, q2(), angle: -45, false, RotatedTextAlignment.BottomLeft, TextAlignment.Leading);                Draw(g, q3(), angle: -30, false, RotatedTextAlignment.BottomLeft, TextAlignment.Leading);            }            else if (sampleParams[0] == s_names[1])            {                // Draw text at different positive angles:                Draw(g, q0(), angle: -90, false, RotatedTextAlignment.TopRight, TextAlignment.Leading);                Draw(g, q1(), angle: -60, false, RotatedTextAlignment.TopRight, TextAlignment.Leading);                Draw(g, q2(), angle: -45, false, RotatedTextAlignment.TopRight, TextAlignment.Leading);                Draw(g, q3(), angle: -30, false, RotatedTextAlignment.TopRight, TextAlignment.Leading);            }            else if (sampleParams[0] == s_names[2])            {                // Draw text using different vertical stacking:                Draw(g, q0(), angle: -30, verticalStacking: true, RotatedTextAlignment.TopRight, TextAlignment.Trailing);                Draw(g, q1(), angle: -30, verticalStacking: false, RotatedTextAlignment.TopRight, TextAlignment.Trailing);                Draw(g, q2(), angle: -30, verticalStacking: false, RotatedTextAlignment.BottomLeft, TextAlignment.Leading);                Draw(g, q3(), angle: -30, verticalStacking: true, RotatedTextAlignment.BottomLeft, TextAlignment.Leading);            }            else if (sampleParams[0] == s_names[3])            {                // RotatedTextAlignment affects the location of text (red) within the target rectangle (green):                Draw(g, q0(), angle: -30, verticalStacking: true, RotatedTextAlignment.TopRight, TextAlignment.Trailing);                Draw(g, q1(), angle: 60, verticalStacking: false, RotatedTextAlignment.BottomRight, TextAlignment.Trailing);                Draw(g, q2(), angle: 30, verticalStacking: true, RotatedTextAlignment.TopLeft, TextAlignment.Leading);                Draw(g, q3(), angle: -60, verticalStacking: false, RotatedTextAlignment.BottomLeft, TextAlignment.Leading);            }            else if (sampleParams[0] == s_names[4])            {                // Draw vertically stacked text using different TextAlignment values:                Draw(g, q0(), angle: 30, verticalStacking: true, RotatedTextAlignment.TopLeft, TextAlignment.Leading);                Draw(g, q1(), angle: 30, verticalStacking: true, RotatedTextAlignment.TopLeft, TextAlignment.Trailing);                Draw(g, q2(), angle: 30, verticalStacking: true, RotatedTextAlignment.TopLeft, TextAlignment.Center);                Draw(g, q3(), angle: 30, verticalStacking: true, RotatedTextAlignment.TopLeft, TextAlignment.Distributed);            }            else if (sampleParams[0] == s_names[5])            {                // Draw horizontally stacked text using different TextAlignment values:                Draw(g, q0(), angle: -70, verticalStacking: false, RotatedTextAlignment.BottomLeft, TextAlignment.Leading);                Draw(g, q1(), angle: -70, verticalStacking: false, RotatedTextAlignment.BottomLeft, TextAlignment.Trailing);                Draw(g, q2(), angle: -70, verticalStacking: false, RotatedTextAlignment.BottomLeft, TextAlignment.Center);                Draw(g, q3(), angle: -70, verticalStacking: false, RotatedTextAlignment.BottomLeft, TextAlignment.Distributed);            }            return bmp;
            RectangleF q0()            {                return new RectangleF(margin, margin, w, h);            }            RectangleF q1()            {                return new RectangleF(pixelSize.Width - margin - w, margin, w, h);            }            RectangleF q2()            {                return new RectangleF(margin, margin + h + gap, w, h);            }            RectangleF q3()            {                return new RectangleF(pixelSize.Width - margin - w, margin + h + gap, w, h);            }        }
        static void Draw(GcGraphics g, RectangleF rect, int angle, bool verticalStacking,            RotatedTextAlignment rotatedAlign, TextAlignment textAlign)        {            // Draw a legend stating the current DrawRotatedText arguments' values:            var tlLegend = g.CreateTextLayout();            tlLegend.DefaultFormat.FontName = "Calibri";            tlLegend.DefaultFormat.FontSize = 9;            tlLegend.AppendLine($"Rotation angle: {angle}°");            tlLegend.AppendLine($"Text alignment: {textAlign}");            tlLegend.AppendLine($"Rotated text alignment: {rotatedAlign}");            tlLegend.AppendLine($"Is vertical stacking: {verticalStacking}");            g.DrawTextLayout(tlLegend, rect.Location);
            // The target rectangle for the DrawRotatedText call:            var d = tlLegend.ContentHeight + 12;            rect.Y += d;            rect.Height -= d;
            var tl = g.CreateTextLayout();            tl.DefaultFormat.FontName = "Calibri";            tl.DefaultFormat.FontSize = 12;            tl.Append("The quick brown fox jumps over the lazy dog. ");            tl.Append("The quick brown fox jumps over the lazy dog.");            tl.TextAlignment = textAlign;            // Draw rotated text:            g.DrawRotatedText(tl, angle, verticalStacking, rect, rotatedAlign);
            // Outline the target rectangle in green:            g.DrawRectangle(rect, new GCDRAW::Pen(Color.PaleGreen, 3));            // Outline the actual text rectangle in red:            var tlCopy = tl.Clone(true);            var tlRect = g.MeasureRotatedText(tlCopy, angle, verticalStacking, rect, rotatedAlign);            g.DrawRectangle(tlRect, new GCDRAW::Pen(Color.Red, 1));        }
        public static List<string[]> GetSampleParamsList()        {            return new List<string[]>()            {                // Strings are name, description, info. Rest are arbitrary strings:                new string[] { s_names[0], "Draw rotated text at different negative angles", null},                new string[] { s_names[1], "Draw rotated text at different positive angles", null},                new string[] { s_names[2], "Draw rotated text using different vertical stacking", null},                new string[] { s_names[3], "Draw text using different rotated text alignments", null},                new string[] { s_names[4], "Draw vertically stacked text using different TextAlignment values", null},                new string[] { s_names[5], "Draw horizontally stacked text using different TextAlignment values", null, },            };        }    }}