using System;

 using System.Collections.Generic;

 using System.ComponentModel;

 using System.Diagnostics;

 using System.Linq;

 using System.Text;

 using System.Threading.Tasks;

 //using System.Timers;

 using System.Windows.Forms;

 using System.Drawing;

 namespace SharpDisplayManager

 {

     class MarqueeLabel : Label

     {

         private bool iOwnTimer;

         [Category("Behavior")]

         [Description("How fast is our text scrolling, in pixels per second.")]

         [DefaultValue(32)]

         [Browsable(true), EditorBrowsable(EditorBrowsableState.Always)]

         public int PixelsPerSecond { get; set; }

         [Category("Behavior")]

         [Description("Use an internal or an external timer.")]

         [DefaultValue(true)]

         [Browsable(true), EditorBrowsable(EditorBrowsableState.Always)]

         public bool OwnTimer

         {

             get

             {

                 return iOwnTimer;

             }

             set

             {

                 iOwnTimer = value;

                 if (iOwnTimer)

                 {

                     Timer = new Timer();

                     Timer.Interval = 10;

                     Timer.Tick += new EventHandler(Timer_Tick);

                     Timer.Start();

                 }

                 else

                 {

                     if (Timer != null)

                         Timer.Dispose();

                     Timer = null;

                 }

             }

         }

         private int CurrentPosition { get; set; }

         private Timer Timer { get; set; }

         private DateTime LastTickTime { get; set; }

         private double PixelsLeft { get; set; }

         //DateTime a = new DateTime(2010, 05, 12, 13, 15, 00);

         //DateTime b = new DateTime(2010, 05, 12, 13, 45, 00);

         //Console.WriteLine(b.Subtract(a).TotalMinutes);

         public MarqueeLabel()

         {

             UseCompatibleTextRendering = true;

             //PixelsPerSecond = 32;

             LastTickTime = DateTime.Now;

             PixelsLeft = 0;

         }

         public void UpdateAnimation(DateTime aLastTickTime, DateTime aNewTickTime)

         {

             while (CurrentPosition > Width)

             {

                 CurrentPosition = -Width;

             }

             PixelsLeft += aNewTickTime.Subtract(aLastTickTime).TotalSeconds * PixelsPerSecond;

             //Keep track of our pixels left over

             //PixelsLeft = offset - Math.Truncate(offset);

             double offset = Math.Truncate(PixelsLeft);

             PixelsLeft -= offset;

             CurrentPosition += Convert.ToInt32(offset);

             /*

             if (offset > 1.0)

             {

                 BackColor = Color.Red;

             }

             else if (offset==1.0)

             {

                 if (BackColor != Color.White)

                 {

                     BackColor = Color.White;

                 }

             }

             else

             {

                 //Too slow

                 //BackColor = Color.Green;

             }*/

             //Only redraw if something has changed

             if (offset != 0)

             {

                 Invalidate();

             }

         }

         void Timer_Tick(object sender, EventArgs e)

         {

             DateTime NewTickTime = DateTime.Now;                       

             //

             UpdateAnimation(LastTickTime, NewTickTime);

             //

             LastTickTime = NewTickTime;

         }

         protected override void OnPaint(PaintEventArgs e)

         {

             //Disable anti-aliasing

             e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SingleBitPerPixelGridFit;

             e.Graphics.TranslateTransform((float)CurrentPosition, 0);

             base.OnPaint(e);

         }

         protected override void Dispose(bool disposing)

         {

             if (disposing)

             {

                 if (Timer != null)

                     Timer.Dispose();

             }

             Timer = null;

         }

     }

 }