Text Rotate 2

   

/*
Professional Windows GUI Programming Using C#
by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury, 
   Zach Greenvoss, Shripad Kulkarni, Neil Whitlow

Publisher: Peer Information
ISBN: 1861007663
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

using System.Drawing.Drawing2D;

namespace Altamira
{
    /// <summary>
    /// Summary description for Altamira.
    /// </summary>
    public class Altamira : System.Windows.Forms.Form
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public Altamira()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();
            this.Text = "Text direction";
            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null) 
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            // 
            // Altamira
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(224, 141);
            this.Name = "Altamira";
            this.Text = "Altamira";

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new Altamira());
        }
        protected override void OnPaint(PaintEventArgs e)
        {
            Graphics g = CreateGraphics();          
            string txt = "HELLO";
            float alpha = 45.0f;
            int fontSize = 24;
            Point center = new Point(90,20);

            // Vertical text:
            FontFamily ff = new FontFamily("Times New Roman");
            Font f = new Font(ff, fontSize, FontStyle.Regular);
            StringFormat sf = new StringFormat();
            sf.FormatFlags = StringFormatFlags.DirectionVertical;
            g.DrawString(txt, f, new SolidBrush(Color.Blue), center, sf);

            // Global shift of the origin:
            g.TranslateTransform(center.X, center.Y);  // X + fontSize/2
            g.DrawEllipse(Pens.Magenta, new Rectangle(0,0, 1, 1));  // center

            // Local rotation of vertcal text (sf):
            GraphicsPath gp = new GraphicsPath();
            gp.AddString(txt, ff, (int)FontStyle.Bold, fontSize + 4, 
                new Point(0, 0), sf);
            Matrix m = new Matrix();
            m.Rotate(alpha);  // clockwise
            gp.Transform(m);
            g.DrawPath(Pens.Red, gp);  //g.FillPath(Brushes.Black, gp);

            // Global rotation of vertical text (sf):
            g.RotateTransform(-alpha);  // anticlockwise
            g.DrawString(txt, f, new SolidBrush(Color.Black), 0, 0, sf);

            gp.Dispose();  g.Dispose();  m.Dispose();
        }
    }
}