.NET DUMeter clone

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace MyDUMeter
{
	/// <summary>
	/// Summary description for ReportForm.
	/// </summary>
	public class ReportForm : System.Windows.Forms.Form
	{
      private System.Windows.Forms.PictureBox pictureBox1;
      private System.ComponentModel.IContainer components;
      int hours;
      MyDUMeter.Log.RateLogDataTable table;
      Bitmap graph;
      Pen h;
      Pen r;
      Pen s;
      Pen b;
      int linespeed;
      private System.Windows.Forms.ToolTip toolTip1;
      DateTime now = DateTime.Now;
      ControlOptions options;

		public ReportForm(int hours, Log.RateLogDataTable table, ControlOptions options)
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

         SetStyle(ControlStyles.DoubleBuffer, true);
         SetStyle(ControlStyles.AllPaintingInWmPaint, true);
         this.options = options;
         this.table = table;
         this.hours = hours;
         linespeed = (int)options.LineSpeed/8;;

         Text = "Report for the last " + hours + " hours";
         int width = 720;

         graph = new Bitmap(width, pictureBox1.Height);
         h = new Pen(options.Lines, 1);
         r = new Pen(options.Down);
         s = new Pen(options.Up);
         b = new Pen(options.Both);

         pictureBox1.Image = graph;
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
            h.Dispose();
            r.Dispose();
            b.Dispose();
            s.Dispose();

				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()
		{
         this.components = new System.ComponentModel.Container();
         this.pictureBox1 = new System.Windows.Forms.PictureBox();
         this.toolTip1 = new System.Windows.Forms.ToolTip(this.components);
         this.SuspendLayout();
         // 
         // pictureBox1
         // 
         this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
         this.pictureBox1.Dock = System.Windows.Forms.DockStyle.Fill;
         this.pictureBox1.Name = "pictureBox1";
         this.pictureBox1.Size = new System.Drawing.Size(716, 224);
         this.pictureBox1.TabIndex = 0;
         this.pictureBox1.TabStop = false;
         this.pictureBox1.Click += new System.EventHandler(this.pictureBox1_Click_1);
         this.pictureBox1.Paint += new System.Windows.Forms.PaintEventHandler(this.pictureBox1_Paint);
         this.pictureBox1.MouseHover += new System.EventHandler(this.pictureBox1_MouseHover);
         this.pictureBox1.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseUp);
         this.pictureBox1.DoubleClick += new System.EventHandler(this.pictureBox1_Click);
         this.pictureBox1.MouseMove += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseMove);
         this.pictureBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseDown);
         // 
         // toolTip1
         // 
         this.toolTip1.AutomaticDelay = 0;
         this.toolTip1.ShowAlways = true;
         // 
         // ReportForm
         // 
         this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
         this.AutoScroll = true;
         this.ClientSize = new System.Drawing.Size(716, 224);
         this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                      this.pictureBox1});
         this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.SizableToolWindow;
         this.MaximizeBox = false;
         this.Name = "ReportForm";
         this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
         this.Text = "ReportForm";
         this.Resize += new System.EventHandler(this.ReportForm_Resize);
         this.Load += new System.EventHandler(this.ReportForm_Load);
         this.ResumeLayout(false);

      }
		#endregion

      private void ReportForm_Load(object sender, System.EventArgs e)
      {
         DrawGraph();
      }

      private void DrawGraph()
      {
         Graphics g = Graphics.FromImage(graph);
         g.Clear(Color.WhiteSmoke);
         
         foreach (Log.RateLogRow row in table)
         {
            float maxr = row.Recv;
            float minr = row.Send;
            Pen p = r;
            if (row.Recv < row.Send)
            {
               p = s;
               maxr = row.Send;
               minr = row.Recv;
            }

            float w = graph.Width/(hours*60F);
            float x = (float)((row.ID - now.AddHours(-hours)).TotalMinutes*w);
            p.Width = w;
            b.Width = w;
            g.DrawLine(p, x - w/2, graph.Height, 
               x - w/2, graph.Height - graph.Height * ((maxr/60) / linespeed));
            g.DrawLine(b, x- w/2, graph.Height, 
               x - w/2, graph.Height - graph.Height * ((minr/60) / linespeed));
         }

         pictureBox1.Image = graph;
         g.Dispose();
      }

      int inc = 60;

      private void pictureBox1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
      {
         if (selected)
         {
            int l = selpt1.X;
            int r = selpt2.X;
            if (l > r)
            {
               l = selpt2.X;
               r = selpt1.X;
            }
            if (l < 0) l = 0;
            if (r > graph.Width) r = graph.Width;
            Rectangle dr = new Rectangle(l, 0, r - l, graph.Height - 1);
            Color c = Color.FromArgb(50, options.Selection);
            Pen selp = new Pen(options.Selection, 1);
            
            Brush selb = new SolidBrush(c);
            e.Graphics.FillRectangle(selb, dr);
            e.Graphics.DrawRectangle(selp, dr);
            selb.Dispose();
            selp.Dispose();
         }
            
         h.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;

         switch (hours)
         {
            case 1:
               inc = graph.Width/12; //every 5 min
               break;
            case 3:
               inc = graph.Width/12; //every 15 min
               break;
            case 6:
               inc = graph.Width/12; //every 30 min
               break;
            case 12:
               inc = graph.Width/12; //every 1 hour
               break;
            case 24:
               inc = graph.Width/8; //every 3 hours
               break;
            case 72:
               inc = graph.Width/12; //every 6 hours
               break;
         }

         for (int i = inc; i < graph.Width; i+=inc)
         {
            e.Graphics.DrawLine(h,
               i, 0 , i, graph.Height);
         }

         h.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
         int vlines = 4;

         for (int j = 1; j < vlines; j++)
         {
            int y = j*graph.Height/vlines;
            e.Graphics.DrawLine(h, 0, y, graph.Width, y);
         }

      }

      private void ReportForm_Resize(object sender, System.EventArgs e)
      {
         if (WindowState == FormWindowState.Normal)
         {
            graph = new Bitmap(720, pictureBox1.Height - 2);
            Size = new Size(724, Size.Height);
            DrawGraph();
         }
      }

      private void pictureBox1_Click(object sender, System.EventArgs e)
      {
         if (FormBorderStyle != FormBorderStyle.SizableToolWindow)
            FormBorderStyle = FormBorderStyle.SizableToolWindow;
         else 
            FormBorderStyle = FormBorderStyle.None;
      }

      bool mousedown = false;
      bool selecting = false;
      bool selected = false;

      Point selpt1;
      Point selpt2;

      Point mousept;

      private void pictureBox1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
      {
         pictureBox1.Invalidate();
         selected = false;
         
         switch (e.Button)
         {
            case MouseButtons.Left:
               mousept = new Point(e.X, e.Y);
               mousedown = true;
               break;
            case MouseButtons.Right:
               selpt1 = new Point(e.X, e.Y);
               selecting = true;
               break;
         }   
      }

      private void pictureBox1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
      {
         if (mousedown)
         {
            Location = new Point(Location.X - (mousept.X - e.X), Location.Y - (mousept.Y - e.Y)); 
         }
         if (selecting)
         {
            selpt2 = new Point(e.X, e.Y);
            selected = true;
            pictureBox1.Invalidate();
         }
      }

      private void pictureBox1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
      {
         switch (e.Button)
         {
            case MouseButtons.Right:
               selpt2 = new Point(e.X, e.Y);
               selecting = false;
               selected = true;
               //DrawSelecting();
               pictureBox1.Invalidate();
               ShowTT();
               break;
         }   
         mousedown = false;        
      }

      private void pictureBox1_MouseHover(object sender, System.EventArgs e)
      {
         //ShowTT();
      }

      private void ShowTT()
      {
         DateTime from;
         DateTime to;

         float minutewidth = graph.Width/(hours*60F);

         float rtot = 0;
         float stot = 0;
         
         int counter = 0; //dammit :) not 0 , NOT 1 but 0 infact

         if (selected)
         {
            int l = selpt1.X;
            int r = selpt2.X;
            if (l > r)
            {
               l = selpt2.X;
               r = selpt1.X;
            }
            if (l < 0) l = 0;
            if (r > graph.Width) r = graph.Width;

            from = now.AddHours(-hours).AddMinutes((l/minutewidth));
            to = now.AddHours(-hours).AddMinutes((r/minutewidth));
            Console.WriteLine("From:\t{0}", from);
            Console.WriteLine("To:\t{0}", to);
         }
         else 
         {
            Point m = pictureBox1.PointToClient(MousePosition);

            int section = m.X/inc;

            from = now.AddHours(-hours).AddMinutes((inc/minutewidth) * section);
            to = now.AddHours(-hours).AddMinutes((inc/minutewidth) * (section + 1));
         }
         foreach (Log.RateLogRow row in table)
         {
            if (row.ID >= from &
               row.ID < to )
            {
               rtot += row.Recv;
               stot += row.Send;
               counter++;
            }
         }
         toolTip1.RemoveAll();
         toolTip1.SetToolTip(pictureBox1, String.Format(@"Period: {6}
Samples: {7} 
From:{4}
To:  {5}
Total Recv:{0} KB
Total Sent:{1} KB
Avg Recv:{2} KB/sec
Avg Sent:{3} KB/sec",
            (rtot/1024F).ToString("f0"),
            (stot/1024F).ToString("f0"),
            counter == 0 ? 0F.ToString("f1") : (rtot/(counter*60*1024)).ToString("f1"),
            counter == 0 ? 0F.ToString("f1") : (stot/(counter*60*1024)).ToString("f1"),
            from, 
            to,
            (to - from).TotalMinutes >= 60 ? 
            (to - from).Hours.ToString("f0") + " hours " + (to - from).Minutes.ToString("f0") + " minutes" : 
            (to - from).Minutes.ToString("f0") + " minutes " + (to - from).Seconds.ToString("f0") + " seconds",
            counter
            ));
         
      }

      private void pictureBox1_Click_1(object sender, System.EventArgs e)
      {
         ShowTT();
      }
	}
}