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