sl@0: using System;
sl@0: using System.Collections.Generic;
sl@0: using System.ComponentModel;
sl@0: using System.Diagnostics;
sl@0: using System.Linq;
sl@0: using System.Text;
sl@0: using System.Threading.Tasks;
sl@0: //using System.Timers;
sl@0: using System.Windows.Forms;
sl@0: using System.Drawing;
sl@0: 
sl@0: namespace SharpDisplayManager
sl@0: {
sl@0:     class MarqueeLabel : Label
sl@0:     {
sl@2:         private bool iOwnTimer;
sl@0: 
sl@0:         [Category("Behavior")]
sl@0:         [Description("How fast is our text scrolling, in pixels per second.")]
sl@0:         [DefaultValue(32)]
sl@0:         [Browsable(true), EditorBrowsable(EditorBrowsableState.Always)]
sl@0:         public int PixelsPerSecond { get; set; }
sl@0: 
sl@2:         [Category("Behavior")]
sl@2:         [Description("Use an internal or an external timer.")]
sl@2:         [DefaultValue(true)]
sl@2:         [Browsable(true), EditorBrowsable(EditorBrowsableState.Always)]
sl@2:         public bool OwnTimer
sl@2:         {
sl@2:             get
sl@2:             {
sl@2:                 return iOwnTimer;
sl@2:             }
sl@2:             set
sl@2:             {
sl@2:                 iOwnTimer = value;
sl@2: 
sl@2:                 if (iOwnTimer)
sl@2:                 {
sl@2:                     Timer = new Timer();
sl@2:                     Timer.Interval = 10;
sl@2:                     Timer.Tick += new EventHandler(Timer_Tick);
sl@2:                     Timer.Start();
sl@2:                 }
sl@2:                 else
sl@2:                 {
sl@2:                     if (Timer != null)
sl@2:                         Timer.Dispose();
sl@2:                     Timer = null;
sl@2:                 }
sl@2: 
sl@2:             }
sl@2:         }
sl@2:         
sl@2:         private int CurrentPosition { get; set; }
sl@2:         private Timer Timer { get; set; }
sl@0:         private DateTime LastTickTime { get; set; }
sl@0:         private double PixelsLeft { get; set; }
sl@0:         //DateTime a = new DateTime(2010, 05, 12, 13, 15, 00);
sl@2:         //DateTime b = new DateTime(2010, 05, 12, 13, 45, 00);
sl@2:         //Console.WriteLine(b.Subtract(a).TotalMinutes);
sl@0: 
sl@0:         public MarqueeLabel()
sl@0:         {
sl@0:             UseCompatibleTextRendering = true;
sl@0:             //PixelsPerSecond = 32;
sl@0:             LastTickTime = DateTime.Now;
sl@0:             PixelsLeft = 0;
sl@0:         }
sl@0: 
sl@2:         public void UpdateAnimation(DateTime aLastTickTime, DateTime aNewTickTime)
sl@0:         {
sl@0:             while (CurrentPosition > Width)
sl@0:             {
sl@0:                 CurrentPosition = -Width;
sl@0:             }
sl@0: 
sl@2:             PixelsLeft += aNewTickTime.Subtract(aLastTickTime).TotalSeconds * PixelsPerSecond;
sl@0: 
sl@0:             //Keep track of our pixels left over
sl@0:             //PixelsLeft = offset - Math.Truncate(offset);
sl@0:             double offset = Math.Truncate(PixelsLeft);
sl@0:             PixelsLeft -= offset;
sl@0: 
sl@0:             CurrentPosition += Convert.ToInt32(offset);
sl@0: 
sl@0:             /*
sl@0:             if (offset > 1.0)
sl@0:             {
sl@0:                 BackColor = Color.Red;
sl@0:             }
sl@0:             else if (offset==1.0)
sl@0:             {
sl@0:                 if (BackColor != Color.White)
sl@0:                 {
sl@0:                     BackColor = Color.White;
sl@0:                 }
sl@0: 
sl@0:             }
sl@0:             else
sl@0:             {
sl@0:                 //Too slow
sl@0:                 //BackColor = Color.Green;
sl@0:             }*/
sl@0: 
sl@0:             //Only redraw if something has changed
sl@0:             if (offset != 0)
sl@0:             {
sl@0:                 Invalidate();
sl@0:             }
sl@2:         }
sl@0: 
sl@2:         void Timer_Tick(object sender, EventArgs e)
sl@2:         {
sl@2:             DateTime NewTickTime = DateTime.Now;                       
sl@2:             //
sl@2:             UpdateAnimation(LastTickTime, NewTickTime);
sl@2:             //
sl@2:             LastTickTime = NewTickTime;
sl@0:         }
sl@0: 
sl@0:         protected override void OnPaint(PaintEventArgs e)
sl@0:         {
sl@0:             //Disable anti-aliasing
sl@0:             e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SingleBitPerPixelGridFit;
sl@0:             e.Graphics.TranslateTransform((float)CurrentPosition, 0);
sl@0:             base.OnPaint(e);
sl@0:         }
sl@0: 
sl@0:         protected override void Dispose(bool disposing)
sl@0:         {
sl@0:             if (disposing)
sl@0:             {
sl@0:                 if (Timer != null)
sl@0:                     Timer.Dispose();
sl@0:             }
sl@0:             Timer = null;
sl@0:         }
sl@0:     }
sl@0: }