Canvas implementation for C#

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;
using System.Timers;
using CanvasControl;

namespace CanvasDemo
{
	public class FrameInfo 
	{
		public FrameInfo(int ch,string fn)
		{
			chain = ch;
			fname = fn;
		}
		public int chain;
		public string fname;
	}

	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Button openImage;
		
		private System.Windows.Forms.Button btnZoomIn;
		private System.Windows.Forms.Button btnZoomOut;
		private CanvasControl.Canvas canvas1;
		private System.Windows.Forms.HScrollBar hScrollBar1;
		private System.Windows.Forms.VScrollBar vScrollBar1;
		
		private SortedList m_frames;
		private System.Windows.Forms.Button btnNewRect;
		private System.Windows.Forms.Button btnNewPoly;
		private System.Windows.Forms.Button btnSelect;
		private System.Windows.Forms.Button delete;
		private System.Windows.Forms.Button btnCreateLine;
		private System.Windows.Forms.Button btnMove;
	
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.TextBox entryFname;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.Label label3;
		private CanvasControl.Canvas canvas2;
		private System.Windows.Forms.Button btnColor;
		
		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
			
			canvas1.connectScrolls(hScrollBar1,vScrollBar1);
			
			m_frames = new SortedList();
			canvas1.CoordChangeEvent += new CanvasControl.Canvas.CoordChangeEventHandler(OnCoordChainged);
			canvas1.ItemNewEvent += new CanvasControl.Canvas.ItemEventHandler(OnNewCanvasItem);			
			canvas1.ItemEnterEvent += new CanvasControl.Canvas.ItemEventHandler(OnEnterCanvasItem);			

			canvas2.setGeomModel(canvas1.getGeomModel());
		}

		
		public void OnNewCanvasItem(object sender, CanvasControl.ItemEventArgs e)
		{
			textBox2.Text = e.indx.ToString();
		}

		public void OnEnterCanvasItem(object sender, CanvasControl.ItemEventArgs e)
		{
			textBox3.Text = e.indx.ToString();
		}

		public void OnCoordChainged(object sender, CanvasControl.CoordEventArgs e)
		{
			textBox1.Text = e.X.ToString() + "," + e.Y.ToString();
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			
			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.textBox1 = new System.Windows.Forms.TextBox();
			this.openImage = new System.Windows.Forms.Button();
			this.btnZoomIn = new System.Windows.Forms.Button();
			this.btnZoomOut = new System.Windows.Forms.Button();
			this.hScrollBar1 = new System.Windows.Forms.HScrollBar();
			this.vScrollBar1 = new System.Windows.Forms.VScrollBar();
			this.entryFname = new System.Windows.Forms.TextBox();
			this.btnNewRect = new System.Windows.Forms.Button();
			this.btnNewPoly = new System.Windows.Forms.Button();
			this.btnSelect = new System.Windows.Forms.Button();
			this.delete = new System.Windows.Forms.Button();
			this.btnCreateLine = new System.Windows.Forms.Button();
			this.btnMove = new System.Windows.Forms.Button();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.canvas1 = new CanvasControl.Canvas();
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.textBox3 = new System.Windows.Forms.TextBox();
			this.label3 = new System.Windows.Forms.Label();
			this.btnColor = new System.Windows.Forms.Button();
			this.canvas2 = new CanvasControl.Canvas();
			this.SuspendLayout();
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(424, 120);
			this.textBox1.Name = "textBox1";
			this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.textBox1.Size = new System.Drawing.Size(56, 20);
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "0000";
			// 
			// openImage
			// 
			this.openImage.Location = new System.Drawing.Point(8, 48);
			this.openImage.Name = "openImage";
			this.openImage.Size = new System.Drawing.Size(80, 23);
			this.openImage.TabIndex = 6;
			this.openImage.Text = "open image";
			this.openImage.Click += new System.EventHandler(this.openImage_Click);
			// 
			// btnZoomIn
			// 
			this.btnZoomIn.Location = new System.Drawing.Point(192, 80);
			this.btnZoomIn.Name = "btnZoomIn";
			this.btnZoomIn.Size = new System.Drawing.Size(24, 24);
			this.btnZoomIn.TabIndex = 8;
			this.btnZoomIn.Text = "+";
			this.btnZoomIn.Click += new System.EventHandler(this.btnZoomIn_Click);
			// 
			// btnZoomOut
			// 
			this.btnZoomOut.Location = new System.Drawing.Point(216, 80);
			this.btnZoomOut.Name = "btnZoomOut";
			this.btnZoomOut.Size = new System.Drawing.Size(24, 24);
			this.btnZoomOut.TabIndex = 9;
			this.btnZoomOut.Text = "-";
			this.btnZoomOut.Click += new System.EventHandler(this.btnZoomOut_Click);
			// 
			// hScrollBar1
			// 
			this.hScrollBar1.Location = new System.Drawing.Point(8, 384);
			this.hScrollBar1.Name = "hScrollBar1";
			this.hScrollBar1.Size = new System.Drawing.Size(328, 17);
			this.hScrollBar1.TabIndex = 11;
			this.hScrollBar1.Scroll += new System.Windows.Forms.ScrollEventHandler(this.hScrollBar1_Scroll);
			// 
			// vScrollBar1
			// 
			this.vScrollBar1.Location = new System.Drawing.Point(336, 112);
			this.vScrollBar1.Name = "vScrollBar1";
			this.vScrollBar1.Size = new System.Drawing.Size(16, 272);
			this.vScrollBar1.TabIndex = 12;
			this.vScrollBar1.Scroll += new System.Windows.Forms.ScrollEventHandler(this.vScrollBar1_Scroll);
			// 
			// entryFname
			// 
			this.entryFname.Location = new System.Drawing.Point(104, 48);
			this.entryFname.Name = "entryFname";
			this.entryFname.Size = new System.Drawing.Size(376, 20);
			this.entryFname.TabIndex = 15;
			this.entryFname.Text = "100";
			// 
			// btnNewRect
			// 
			this.btnNewRect.Location = new System.Drawing.Point(8, 80);
			this.btnNewRect.Name = "btnNewRect";
			this.btnNewRect.Size = new System.Drawing.Size(40, 23);
			this.btnNewRect.TabIndex = 16;
			this.btnNewRect.Text = "rect";
			this.btnNewRect.Click += new System.EventHandler(this.btnNewRect_Click);
			// 
			// btnNewPoly
			// 
			this.btnNewPoly.Location = new System.Drawing.Point(48, 80);
			this.btnNewPoly.Name = "btnNewPoly";
			this.btnNewPoly.Size = new System.Drawing.Size(48, 23);
			this.btnNewPoly.TabIndex = 17;
			this.btnNewPoly.Text = "poly";
			this.btnNewPoly.Click += new System.EventHandler(this.btnNewPoly_Click);
			// 
			// btnSelect
			// 
			this.btnSelect.Location = new System.Drawing.Point(384, 80);
			this.btnSelect.Name = "btnSelect";
			this.btnSelect.Size = new System.Drawing.Size(48, 24);
			this.btnSelect.TabIndex = 18;
			this.btnSelect.Text = "select";
			this.btnSelect.Click += new System.EventHandler(this.btnSelect_Click);
			// 
			// delete
			// 
			this.delete.Location = new System.Drawing.Point(432, 80);
			this.delete.Name = "delete";
			this.delete.Size = new System.Drawing.Size(48, 24);
			this.delete.TabIndex = 19;
			this.delete.Text = "delete";
			this.delete.Click += new System.EventHandler(this.delete_Click);
			// 
			// btnCreateLine
			// 
			this.btnCreateLine.Location = new System.Drawing.Point(96, 80);
			this.btnCreateLine.Name = "btnCreateLine";
			this.btnCreateLine.Size = new System.Drawing.Size(48, 23);
			this.btnCreateLine.TabIndex = 20;
			this.btnCreateLine.Text = "line";
			this.btnCreateLine.Click += new System.EventHandler(this.btnCreateLine_Click);
			// 
			// btnMove
			// 
			this.btnMove.Location = new System.Drawing.Point(336, 80);
			this.btnMove.Name = "btnMove";
			this.btnMove.Size = new System.Drawing.Size(48, 24);
			this.btnMove.TabIndex = 21;
			this.btnMove.Text = "move";
			this.btnMove.Click += new System.EventHandler(this.btnMove_Click);
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(424, 152);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(56, 20);
			this.textBox2.TabIndex = 22;
			this.textBox2.Text = "0";
			// 
			// canvas1
			// 
			this.canvas1.Location = new System.Drawing.Point(8, 112);
			this.canvas1.Name = "canvas1";
			this.canvas1.Size = new System.Drawing.Size(328, 272);
			this.canvas1.TabIndex = 23;
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(352, 120);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(48, 16);
			this.label1.TabIndex = 24;
			this.label1.Text = "coords:";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(352, 152);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(56, 23);
			this.label2.TabIndex = 25;
			this.label2.Text = "new item:";
			// 
			// textBox3
			// 
			this.textBox3.Location = new System.Drawing.Point(424, 184);
			this.textBox3.Name = "textBox3";
			this.textBox3.Size = new System.Drawing.Size(56, 20);
			this.textBox3.TabIndex = 26;
			this.textBox3.Text = "0000";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(352, 184);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(64, 23);
			this.label3.TabIndex = 27;
			this.label3.Text = "enter item:";
			// 
			// btnColor
			// 
			this.btnColor.Location = new System.Drawing.Point(264, 80);
			this.btnColor.Name = "btnColor";
			this.btnColor.Size = new System.Drawing.Size(56, 24);
			this.btnColor.TabIndex = 28;
			this.btnColor.Text = "color";
			this.btnColor.Click += new System.EventHandler(this.btnColor_Click);
			// 
			// canvas2
			// 
			this.canvas2.Location = new System.Drawing.Point(352, 256);
			this.canvas2.Name = "canvas2";
			this.canvas2.Size = new System.Drawing.Size(128, 128);
			this.canvas2.TabIndex = 29;
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(504, 414);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.canvas2,
																		  this.btnColor,
																		  this.label3,
																		  this.textBox3,
																		  this.label2,
																		  this.label1,
																		  this.canvas1,
																		  this.textBox2,
																		  this.btnMove,
																		  this.btnCreateLine,
																		  this.delete,
																		  this.btnSelect,
																		  this.btnNewPoly,
																		  this.btnNewRect,
																		  this.entryFname,
																		  this.vScrollBar1,
																		  this.hScrollBar1,
																		  this.btnZoomOut,
																		  this.btnZoomIn,
																		  this.openImage,
																		  this.textBox1});
			this.Name = "Form1";
			this.Text = "Form1";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}
	
		private void openImage_Click(object sender, System.EventArgs e)
		{
			
			OpenFileDialog openFileDialog = new OpenFileDialog();
			openFileDialog.ShowDialog();
			string fname = openFileDialog.FileName;
			entryFname.Text = fname;
			canvas1.LoadImage(fname);
			canvas2.fitToWidget();
		}

		private void btnZoomIn_Click(object sender, System.EventArgs e)
		{
			canvas1.ZoomIn();
		}

		
		private void hScrollBar1_Scroll(object sender, System.Windows.Forms.ScrollEventArgs e)
		{
			textBox1.Text = "VScrollBar Value:(OnScroll Event) " + e.NewValue.ToString();
			canvas1.ScrollHorizontal(e.NewValue);
		}

		private void btnZoomOut_Click(object sender, System.EventArgs e)
		{
			canvas1.ZoomOut();
		}

		private void vScrollBar1_Scroll(object sender, System.Windows.Forms.ScrollEventArgs e)
		{
			textBox1.Text = "HScrollBar Value:(OnScroll Event) " + e.NewValue.ToString();
			canvas1.ScrollVertical(e.NewValue);
		}

		private void btnNewRect_Click(object sender, System.EventArgs e)
		{
			canvas1.CreateRectangle();
		}

		private void btnSelect_Click(object sender, System.EventArgs e)
		{
			canvas1.StartSelection();
		}

		private void delete_Click(object sender, System.EventArgs e)
		{
			canvas1.DeleteSelected();
		}

		private void btnCreateLine_Click(object sender, System.EventArgs e)
		{
			canvas1.CreateLine();
		}

		private void btnNewPoly_Click(object sender, System.EventArgs e)
		{
			canvas1.CreatePolygon();
		}

		private void btnMove_Click(object sender, System.EventArgs e)
		{
			canvas1.StartMoving();
		}

		private void btnColor_Click(object sender, System.EventArgs e)
		{
			ColorDialog colorDialog = new ColorDialog();	
			if(colorDialog.ShowDialog() != DialogResult.OK)
			{
				return;				
			}

			Color color = colorDialog.Color;
			int [] selected = canvas1.GetSelected();
			foreach(int i in selected)
			{
				CanvasControl.CanvasItem item = canvas1.GetItem(i);
				item.Icolor = color;
				item.select(false);
			}

			canvas1.Invalidate();
			canvas1.Update();

		}

		

		

		
	}
}