Mapview

using System;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections;

namespace GIS.Geometry
{
	public class Handle
	{
		#region Private members of the Graphic handles
		private int handlesize = 8;
		private Color normalcolor = Color.White;
		private Color disabledcolor=Color.Gray;
		private MapObjectArgs c1=null;
		private Label[] lbl;
		private int startl;
		private int startt;
		private int startw;
		private int starth;
		private int startx;
		private int starty;
		private bool dragging;
		#endregion
		#region Constructors for graphic handles
		public Handle()
		{
		}

		#endregion
		#region Methods of graphic handles
		//
		// Connect a Click event handler to the passed Control
		// that attaches a graphic handle to the graphic item when 
		// it is clicked
		//
		public void GetHandles(IMapviewObject g) 
		{
//			PointF[] v=new PointF(g.Vertices.Length);
//			for (int i=0; i<g.Vertices.Length; i++)
//			{
//				v[i]=new PointF(g.Vertices[i].X,g.Vertices[i].Y);
//			}
//			int cnt=v.Length;
//			Label[] lbl = new Label[cnt];
//			for (int i = 0; i<cnt; i++) 
//			{
//				lbl[i] = new System.Windows.Forms.Label();
//				lbl[i].TabIndex = i;
//				lbl[i].FlatStyle = 0 ;
//				lbl[i].BorderStyle = BorderStyle.FixedSingle;
//				lbl[i].BackColor = normalcolor;
//				lbl[i].Left=200-i; //; (int)v[i].X-handlesize/2;
//				lbl[i].Top=200 + i; //(int)v[i].Y-handlesize/2;
//				lbl[i].Text = "";
//				lbl[i].BringToFront();
//				lbl[i].Visible=true;
//				//				lbl[i].MouseDown += new MouseEventHandler(this.lbl_MouseDown);
//				//				lbl[i].MouseMove += new MouseEventHandler(this.lbl_MouseMove);
//				//				lbl[i].MouseUp += new MouseEventHandler(this.lbl_MouseUp);
//			}

//			//Position sizing handles around Control
//			MoveHandles();
//
//			//Display sizing handles
//			ShowHandles();
			//o.GraphicSelected+= new GraphicEvents(this.CreateHandles);
		}
		//
		// Attaches a graphic handle to the selected graphic item
		//
		private void CreateHandles(IMapviewObject g) 
		{
			PointF[] v=g.Vertices;
			for (int i = 0; i<v.Length; i++) 
			{
				lbl[i] = new Label();
				lbl[i].TabIndex = i;
				lbl[i].FlatStyle = 0 ;
				lbl[i].BorderStyle = BorderStyle.FixedSingle;
				lbl[i].BackColor = normalcolor;
				lbl[i].Left=(int)v[i].X-handlesize/2;
				lbl[i].Top=(int)v[i].Y-handlesize/2;
				lbl[i].Text = "";
				lbl[i].BringToFront();
				lbl[i].Visible=true;
//				lbl[i].MouseDown += new MouseEventHandler(this.lbl_MouseDown);
//				lbl[i].MouseMove += new MouseEventHandler(this.lbl_MouseMove);
//				lbl[i].MouseUp += new MouseEventHandler(this.lbl_MouseUp);
			}

			//Position sizing handles around Control
			MoveHandles();

			//Display sizing handles
			ShowHandles();
		}

		public void Remove() 
		{
			HideHandles();
//			m_control.Cursor = oldCursor;
		}
		public void MoveHandles()
		{
		}

		private void ShowHandles() 
		{
			if (c1!=null) 
			{
				for (int i = 0; i<8; i++) 
				{
					lbl[i].Visible = true;
				}
			}
		}

		private void HideHandles() 
		{
			for (int i = 0; i<8; i++) 
			{
				lbl[i].Visible = false;
			}
		}
		/////////////////////////////////////////////////////////////////
		// MOUSE EVENTS THAT IMPLEMENT SIZING OF THE PICKED CONTROL
		/////////////////////////////////////////////////////////////////

		//
		// Store control position and size when mouse button pushed over
		// any sizing handle
		//
		private void lbl_MouseDown(object sender, MouseEventArgs e) 
		{
			dragging = true;
//			startl = m_control.Left;
//			startt = m_control.Top;
//			startw = m_control.Width;
//			starth = m_control.Height;
			HideHandles();
		}

		//
		// Size the picked control in accordance with sizing handle being dragged
		//	0   1   2
		//  7       3
		//  6   5   4
		//
		private void lbl_MouseMove(object sender, MouseEventArgs e) 
		{
//			int l = m_control.Left;
//			int w = m_control.Width;
//			int t = m_control.Top;
//			int h = m_control.Height;
//			if (dragging) 
//			{
//				switch (((Label)sender).TabIndex) 
//				{
//					case 0: // Dragging top-left sizing box
//						l = startl + e.X < startl + startw - MIN_SIZE ? startl + e.X : startl + startw - MIN_SIZE;
//						t = startt + e.Y < startt + starth - MIN_SIZE ? startt + e.Y : startt + starth - MIN_SIZE;
//						w = startl + startw - m_control.Left;
//						h = startt + starth - m_control.Top;
//						break;
//					case 1: // Dragging top-center sizing box
//						t = startt + e.Y < startt + starth - MIN_SIZE ? startt + e.Y : startt + starth - MIN_SIZE;
//						h = startt + starth - m_control.Top;
//						break;
//					case 2: // Dragging top-right sizing box
//						w = startw + e.X > MIN_SIZE ? startw + e.X : MIN_SIZE;
//						t = startt + e.Y < startt + starth - MIN_SIZE ? startt + e.Y : startt + starth - MIN_SIZE;
//						h = startt + starth - m_control.Top;
//						break;
//					case 3: // Dragging right-middle sizing box
//						w = startw + e.X > MIN_SIZE ? startw + e.X : MIN_SIZE;
//						break;
//					case 4: // Dragging right-bottom sizing box
//						w = startw + e.X > MIN_SIZE ? startw + e.X : MIN_SIZE;
//						h = starth + e.Y > MIN_SIZE ? starth + e.Y : MIN_SIZE;
//						break;
//					case 5: // Dragging center-bottom sizing box
//						h = starth + e.Y > MIN_SIZE ? starth + e.Y : MIN_SIZE;
//						break;
//					case 6: // Dragging left-bottom sizing box
//						l = startl + e.X < startl + startw - MIN_SIZE ? startl + e.X : startl + startw - MIN_SIZE;
//						w = startl + startw - m_control.Left;
//						h = starth + e.Y > MIN_SIZE ? starth + e.Y : MIN_SIZE;
//						break;
//					case 7: // Dragging left-middle sizing box
//						l = startl + e.X < startl + startw - MIN_SIZE ? startl + e.X : startl + startw - MIN_SIZE;
//						w = startl + startw - m_control.Left;
//						break;
//				}
//				l =(l<0)?0:l;
//				t =(t<0)?0:t;
//				m_control.SetBounds(l,t,w,h);
//			}
		}

		//
		// Display sizing handles around picked control once sizing has completed
		//
		private void lbl_MouseUp(object sender, MouseEventArgs e) 
		{
			dragging = false;
			MoveHandles();
			ShowHandles();
		}
		#endregion
	}
}