/* -*- Mode: C; c-basic-offset:4 ; -*- *//* *  (C) 2001 by Argonne National Laboratory. *      See COPYRIGHT in top-level directory. */using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;using System.Net;using System.Net.Sockets;using System.IO;using System.Threading;using System.Text;using System.Collections.Specialized;namespace MandelViewer{	public class MandelViewerForm : System.Windows.Forms.Form	{		private System.Windows.Forms.Button connect_button;		private System.Windows.Forms.TextBox host;		private System.Windows.Forms.TextBox port;		private System.Windows.Forms.PictureBox outputBox;		private bool bConnected = false;		private TcpClient sock = null;		private static BinaryWriter sock_writer = null;		private static BinaryReader sock_reader = null;		private static Bitmap bitmap = null;		private int nWidth, nHeight;		private static int nNumColors = 100;		private static int nMax = 100;		private static Color [] colors = null;		private static double xmin = -1.0, ymin = -1.0, xmax = 1.0, ymax = 1.0;		private static bool bDrawing = false;		private static PictureBox pBox = null;		private Point p1, p2;		private Thread thread = null;		private System.Windows.Forms.Button demo_button;		private System.Windows.Forms.ComboBox points_comboBox;		private Rectangle rBox;		private System.Windows.Forms.Button go_stop_button;		private static ArrayList demo_list = null;		private static bool bDemoMode = false;		private static int demo_iter = 0;		private static MandelViewerForm form = null;		static void work_thread()		{			int [] temp = new int[4];			int [] buffer = null;			int size;			int i, j, k;			Graphics g;			do			{				try				{					g = Graphics.FromImage(bitmap);					g.Clear(Color.Black);					g.Dispose();					g = null;					pBox.Invalidate();					if (bDemoMode)					{						if (demo_list != null)						{							if (demo_list.Count > demo_iter)							{								xmin = ((ExamplePoint)demo_list[demo_iter]).xmin;								ymin = ((ExamplePoint)demo_list[demo_iter]).ymin;								xmax = ((ExamplePoint)demo_list[demo_iter]).xmax;								ymax = ((ExamplePoint)demo_list[demo_iter]).ymax;								nMax = ((ExamplePoint)demo_list[demo_iter]).max_iter;								if (((ExamplePoint)demo_list[demo_iter]).name != null)									form.Text = "Mandelbrot Viewer - " + ((ExamplePoint)demo_list[demo_iter]).name;								else									form.Text = String.Format("Mandelbrot Viewer - {0}", demo_iter);								colors = new Color[nMax+1];								ColorRainbow.Make_color_array(nNumColors, colors);								colors[nMax] = Color.FromKnownColor(KnownColor.Black); // add one on the top to avoid edge errors							}							demo_iter++;							if (demo_iter >= demo_list.Count)								demo_iter = 0;						}					}					if (colors.Length != nMax + 1)					{						colors = new Color[nMax+1];						ColorRainbow.Make_color_array(nNumColors, colors);						colors[nMax] = Color.FromKnownColor(KnownColor.Black); // add one on the top to avoid edge errors					}					sock_writer.Write(xmin);					sock_writer.Write(ymin);					sock_writer.Write(xmax);					sock_writer.Write(ymax);					sock_writer.Write(nMax);					for (;;)					{						temp[0] = sock_reader.ReadInt32();						temp[1] = sock_reader.ReadInt32();						temp[2] = sock_reader.ReadInt32();						temp[3] = sock_reader.ReadInt32();						if (temp[0] == 0 && temp[1] == 0 && temp[2] == 0 && temp[3] == 0)						{							if (bDemoMode)							{								Thread.Sleep(5000);								break;							}							bDrawing = false;							return;						}						size = (temp[1] + 1 - temp[0]) * (temp[3] + 1 - temp[2]);						buffer = new int[size];						for (i=0; i<size; i++)							buffer[i] = sock_reader.ReadInt32();						int max_color = colors.Length;						Random rand = new Random();						try						{							lock (bitmap)							{								k = 0;								for (j=temp[2]; j<=temp[3]; j++)								{									for (i=temp[0]; i<=temp[1]; i++)									{										//bitmap.SetPixel(i, j, colors[buffer[k]]);																				if (buffer[k] >= 0 && buffer[k] < max_color)											bitmap.SetPixel(i, j, colors[buffer[k]]);										else										{											bitmap.SetPixel(i, j, Color.FromArgb(rand.Next(0, 255), rand.Next(0, 255), rand.Next(0,255)));										}																				k++;									}								}							}						}						catch (Exception e)						{							MessageBox.Show("exception thrown while accessing bitmap: " + e.Message, "Error");						}						pBox.Invalidate();					}				}				catch (Exception e)				{					// do something with the exception					MessageBox.Show("Exception thrown in worker thread: " + e.Message, "Error");					break;				}			} while (bDemoMode);			bDrawing = false;		}		/// <summary>		/// Required designer variable.		/// </summary>		private System.ComponentModel.Container components = null;		public MandelViewerForm()		{			InitializeComponent();			try			{				// This throws a security exception if you are on a network share or				// running from the web.				host.Text = System.Environment.MachineName;			} 			catch (Exception)			{				host.Text = "localhost";			}			port.Text = "7470";			p1 = new Point(0,0);			p2 = new Point(0,0);			rBox = new Rectangle(0,0,0,0);			go_stop_button.Enabled = false;		}		/// <summary>		/// Clean up any resources being used.		/// </summary>		protected override void Dispose( bool disposing )		{			if( disposing )			{				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.connect_button = new System.Windows.Forms.Button();			this.host = new System.Windows.Forms.TextBox();			this.port = new System.Windows.Forms.TextBox();			this.outputBox = new System.Windows.Forms.PictureBox();			this.demo_button = new System.Windows.Forms.Button();			this.points_comboBox = new System.Windows.Forms.ComboBox();			this.go_stop_button = new System.Windows.Forms.Button();			this.SuspendLayout();			// 			// connect_button			// 			this.connect_button.Location = new System.Drawing.Point(8, 8);			this.connect_button.Name = "connect_button";			this.connect_button.Size = new System.Drawing.Size(56, 23);			this.connect_button.TabIndex = 0;			this.connect_button.Text = "Connect";			this.connect_button.Click += new System.EventHandler(this.connect_button_Click);			// 			// host			// 			this.host.Location = new System.Drawing.Point(72, 8);			this.host.Name = "host";			this.host.TabIndex = 1;			this.host.Text = "host";			// 			// port			// 			this.port.Location = new System.Drawing.Point(176, 8);			this.port.Name = "port";			this.port.Size = new System.Drawing.Size(40, 20);			this.port.TabIndex = 2;			this.port.Text = "7470";			// 			// outputBox			// 			this.outputBox.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 				| System.Windows.Forms.AnchorStyles.Left) 				| System.Windows.Forms.AnchorStyles.Right)));			this.outputBox.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;			this.outputBox.Location = new System.Drawing.Point(8, 40);			this.outputBox.Name = "outputBox";			this.outputBox.Size = new System.Drawing.Size(760, 760);			this.outputBox.TabIndex = 3;			this.outputBox.TabStop = false;			this.outputBox.Paint += new System.Windows.Forms.PaintEventHandler(this.outputBox_Paint);			this.outputBox.MouseUp += new System.Windows.Forms.MouseEventHandler(this.outputBox_MouseUp);			this.outputBox.MouseMove += new System.Windows.Forms.MouseEventHandler(this.outputBox_MouseMove);			this.outputBox.MouseDown += new System.Windows.Forms.MouseEventHandler(this.outputBox_MouseDown);			// 			// demo_button			// 			this.demo_button.Location = new System.Drawing.Point(224, 8);			this.demo_button.Name = "demo_button";			this.demo_button.Size = new System.Drawing.Size(88, 23);			this.demo_button.TabIndex = 4;			this.demo_button.Text = "Demo Points";			this.demo_button.Click += new System.EventHandler(this.demo_button_Click);			// 			// points_comboBox			// 			this.points_comboBox.Location = new System.Drawing.Point(320, 8);			this.points_comboBox.MaxDropDownItems = 20;			this.points_comboBox.Name = "points_comboBox";			this.points_comboBox.Size = new System.Drawing.Size(400, 21);			this.points_comboBox.TabIndex = 5;			this.points_comboBox.Text = "points";			this.points_comboBox.DropDown += new System.EventHandler(this.points_comboBox_DropDown);			this.points_comboBox.SelectedValueChanged += new System.EventHandler(this.points_comboBox_SelectedValueChanged);			// 			// go_stop_button			// 			this.go_stop_button.Location = new System.Drawing.Point(728, 8);			this.go_stop_button.Name = "go_stop_button";			this.go_stop_button.Size = new System.Drawing.Size(40, 23);			this.go_stop_button.TabIndex = 6;			this.go_stop_button.Text = "Go";			this.go_stop_button.Click += new System.EventHandler(this.go_stop_button_Click);			// 			// MandelViewerForm			// 			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);			this.ClientSize = new System.Drawing.Size(776, 811);			this.Controls.Add(this.go_stop_button);			this.Controls.Add(this.points_comboBox);			this.Controls.Add(this.demo_button);			this.Controls.Add(this.outputBox);			this.Controls.Add(this.port);			this.Controls.Add(this.host);			this.Controls.Add(this.connect_button);			this.Name = "MandelViewerForm";			this.Text = "Mandelbrot Viewer";			this.Resize += new System.EventHandler(this.MandelViewerForm_Resize);			this.ResumeLayout(false);		}		#endregion		/// <summary>		/// The main entry point for the application.		/// </summary>		[STAThread]		static void Main() 		{			double d = 0.0;			int i = 0;			form = new MandelViewerForm();			Application.Run(form);			try			{				// tell the mpi program to stop				MandelViewerForm.sock_writer.Write(d);				MandelViewerForm.sock_writer.Write(d);				MandelViewerForm.sock_writer.Write(d);				MandelViewerForm.sock_writer.Write(d);				MandelViewerForm.sock_writer.Write(i);			}			catch (Exception)			{				// Do nothing.  It just means that the socket connection to the pmandel program is broken.			}		}		private void connect_button_Click(object sender, System.EventArgs e)		{			if (bConnected)			{				MessageBox.Show("You may only connect once", "Note");				return;			}			try			{				sock = new TcpClient(host.Text, Convert.ToInt32(port.Text));				if (sock == null)				{					MessageBox.Show("Unable to connect to " + host.Text + " on port " + port.Text, "Error");					return;				}			}			catch(SocketException exception)			{				MessageBox.Show("Unable to connect to " + host.Text + " on port " + port.Text + ", " + exception.Message, "Error");				return;			}			bConnected = true;			sock_writer = new BinaryWriter(sock.GetStream());			sock_reader = new BinaryReader(sock.GetStream());			nWidth = sock_reader.ReadInt32();			nHeight = sock_reader.ReadInt32();			nNumColors = sock_reader.ReadInt32();			nMax = sock_reader.ReadInt32();			//MessageBox.Show(String.Format("Width: {0}, Height: {1}, num_colors: {2}", nWidth, nHeight, nNumColors), "Note");			// validate input values			if (nWidth > 2048)				nWidth = 2048;			if (nWidth < 1)				nWidth = 768;			if (nHeight > 2048)				nHeight = 2048;			if (nHeight < 1)				nHeight = 768;			if (nNumColors > 1024)				nNumColors = 1024;			if (nNumColors < 1)				nNumColors = 128;			if (nMax < 1)				nMax = 100;			if (nMax > 5000)				nMax = 5000;			colors = new Color[nMax+1];			ColorRainbow.Make_color_array(nNumColors, colors);			colors[nMax] = Color.FromKnownColor(KnownColor.Black); // add one on the top to avoid edge errors			bitmap = new Bitmap(nWidth, nHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);			Graphics g;			g = Graphics.FromImage(bitmap);			g.Clear(Color.FromKnownColor(KnownColor.Black));			g.Dispose();			/*			Rectangle rButton = connect_button.Bounds;			Rectangle rBox = outputBox.Bounds;			outputBox.SetBounds(rButton.Left, rButton.Top, rBox.Width, rBox.Height + (rBox.Top - rButton.Top));			connect_button.Hide();			host.Hide();			port.Hide();			outputBox.Invalidate();			*/			connect_button.Enabled = false;			host.ReadOnly = true;			port.ReadOnly = true;			if (demo_list != null && demo_list.Count > 0)			{				go_stop_button.Enabled = true;			}			bDrawing = true;			pBox = outputBox;			ThreadStart threadProc = new ThreadStart(work_thread);		    thread = new Thread(threadProc);			thread.Start();		}		private void outputBox_Paint(object sender, System.Windows.Forms.PaintEventArgs e)		{			if (bConnected && bitmap != null)			{				lock (bitmap)				{					e.Graphics.DrawImage(bitmap, 0, 0, outputBox.Size.Width, outputBox.Size.Height);					if (rBox.Width > 0 && rBox.Height > 0)					{						SolidBrush brush = new SolidBrush(Color.FromArgb(198,255,255,0));						e.Graphics.FillRectangle(brush, rBox);					}				}			}		}		private void MandelViewerForm_Resize(object sender, System.EventArgs e)		{			if (bConnected)			{				outputBox.Invalidate();			}		}		private void outputBox_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)		{			if (!bDrawing && e.Button == MouseButtons.Left)			{				p1 = new Point(e.X, e.Y);				rBox = new Rectangle(p1.X, p1.Y, 0, 0);			}		}		private void outputBox_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)		{			if (!bDrawing && e.Button == MouseButtons.Left)			{				int x, y;				p2 = new Point(e.X, e.Y);				x = Math.Min(p1.X, p2.X);				y = Math.Min(p1.Y, p2.Y);				rBox = new Rectangle(x, y, Math.Max(p1.X, p2.X) - x, Math.Max(p1.Y, p2.Y) - y);				outputBox.Invalidate();			}		}		private void outputBox_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)		{			if (e.Button == MouseButtons.Left)			{				if (!bDrawing && thread != null)				{					Rectangle r;					double x1,y1,x2,y2;					double width, height, pixel_width, pixel_height;					int x, y;					if (p1.X == e.X && p1.Y == e.Y)					{						return;					}					p2 = new Point(e.X, e.Y);					x = Math.Min(p1.X, p2.X);					y = Math.Min(p1.Y, p2.Y);					thread.Join();					r = new Rectangle(x, y, Math.Max(p1.X, p2.X) - x, Math.Max(p1.Y, p2.Y) - y);					width = xmax - xmin;					height = ymax - ymin;					pixel_width = outputBox.Width;					pixel_height = outputBox.Height;					x1 = xmin + ((double)r.Left * width / pixel_width);					x2 = xmin + ((double)r.Right * width / pixel_width);					y2 = ymin + ((double)(pixel_height - r.Top) * height / pixel_height);					y1 = ymin + ((double)(pixel_height - r.Bottom) * height / pixel_height);					xmin = x1;					xmax = x2;					ymin = y1;					ymax = y2;					ExamplePoint ep = new ExamplePoint(xmin, ymin, xmax, ymax, nMax, "dragged");					Text = "Mandelbrot Viewer" + ep.ToShortString();					bDrawing = true;					ThreadStart threadProc = new ThreadStart(work_thread);					thread = new Thread(threadProc);					thread.Start();					rBox = new Rectangle(x, y, 0, 0);					outputBox.Invalidate();				}			}			if (e.Button == MouseButtons.Right)			{				if (!bDrawing && thread != null)				{					thread.Join();					xmin = -1.0;					xmax = 1.0;					ymin = -1.0;					ymax = 1.0;					bDrawing = true;					ThreadStart threadProc = new ThreadStart(work_thread);					thread = new Thread(threadProc);					thread.Start();					rBox = new Rectangle(0, 0, 0, 0);					outputBox.Invalidate();				}			}		}		private void demo_button_Click(object sender, System.EventArgs e)		{			if (demo_list == null)				demo_list = new ArrayList();			OpenFileDialog dlg = new OpenFileDialog();			dlg.InitialDirectory = "c:\\";			dlg.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";			dlg.FilterIndex = 1;			dlg.RestoreDirectory = true;			if(dlg.ShowDialog() == DialogResult.OK)			{