HandyClock

using System;

using System.ComponentModel;

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Windows.Forms;

 

namespace WellFormed

{

  /// <summary>

  /// Summary description for HandyClock.

  /// </summary>

  public class HandyClock : Control

  {

    Timer t=new Timer();

    public HandyClock()

    {

      this.Width=20;

      this.Height=20;

      t.Interval=1000;

      t.Tick+=new EventHandler(t_Tick);

      t.Enabled=true;

    }

 

    protected float Radians(float f)

    {

      return (float)(f/180*Math.PI);

    }

       

    protected void DrawHand(Graphics g,float angle, float size)

    {

      angle+=90;

      if(angle>360)

        angle-=360;

      g.DrawLine(Pens.Black,

        new PointF(this.Width/2f, this.Height/2f),

        new PointF(

          this.Width/2-

          (float)Math.Cos(Radians(angle))*(this.Width/3f),

          this.Height/2-

          (float)Math.Sin(Radians(angle))*(this.Width/3f)

          )

        );

    }

 

    protected override void OnPaint(PaintEventArgs e)

    {

      e.Graphics.FillEllipse(Brushes.White,0,0,this.Width,this.Height);

      e.Graphics.DrawEllipse(Pens.Black,0,0,this.Width-1,this.Height-1);

      float angle=(float)(DateTime.Now.TimeOfDay.TotalSeconds*6f);

      DrawHand(e.Graphics,angle,this.Width*0.4f);

      angle=(float)(DateTime.Now.TimeOfDay.TotalMinutes*6f);

      DrawHand(e.Graphics,angle,this.Width*0.4f);

      angle=(float)(DateTime.Now.TimeOfDay.TotalHours*30f);

      DrawHand(e.Graphics,angle,this.Width*0.2f);

    }

 

    protected override void OnSizeChanged(EventArgs e)

    {

      this.Width=this.Height=20;

      base.OnSizeChanged (e);

    }

 

    private void t_Tick(object sender, EventArgs e)

    {

      Refresh();

    }

 

    WellFormed.BigClock bc;

 

    protected override void OnMouseHover(EventArgs e)

    {

      bc=new WellFormed.BigClock();

      bc.Create();

      bc.Show();

      base.OnMouseHover (e);

    }

 

  }

}