form1.cs

苏金明编写的《用VB.NET和VC#.NET开发交互式CAD系统》一书的源代码

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

namespace VCSharp
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.ComponentModel.IContainer components;
		private System.Windows.Forms.MainMenu mainMenu1;
		private System.Windows.Forms.MenuItem mnuDraw;
		private System.Windows.Forms.MenuItem mnuLine;
		private System.Windows.Forms.MenuItem mnuArc;
		private System.Windows.Forms.MenuItem mnuText;

		private ArrayList ges=new ArrayList();
		private ArrayList geSels=new ArrayList();
		private ICommand aCommand;
		private CCreateLine creLine=new CCreateLine();
		private CCreateRectangle creRect=new CCreateRectangle();
		private CCreateCircle creCircle=new CCreateCircle();
		private CCreateArc creArc=new CCreateArc();
		private CCreateText creText=new CCreateText();
		private System.Windows.Forms.MenuItem mnuRect;
		private System.Windows.Forms.MenuItem mnuCircle;
		private Module m=new Module();


		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.mnuDraw = new System.Windows.Forms.MenuItem();
			this.mnuLine = new System.Windows.Forms.MenuItem();
			this.mnuRect = new System.Windows.Forms.MenuItem();
			this.mnuCircle = new System.Windows.Forms.MenuItem();
			this.mnuArc = new System.Windows.Forms.MenuItem();
			this.mnuText = new System.Windows.Forms.MenuItem();
			// 
			// mainMenu1
			// 
			this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.mnuDraw});
			// 
			// mnuDraw
			// 
			this.mnuDraw.Index = 0;
			this.mnuDraw.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					this.mnuLine,
																					this.mnuRect,
																					this.mnuCircle,
																					this.mnuArc,
																					this.mnuText});
			this.mnuDraw.Text = "绘图";
			// 
			// mnuLine
			// 
			this.mnuLine.Index = 0;
			this.mnuLine.Text = "直线段";
			this.mnuLine.Click += new System.EventHandler(this.mnuLine_Click);
			// 
			// mnuRect
			// 
			this.mnuRect.Index = 1;
			this.mnuRect.Text = "矩形";
			this.mnuRect.Click += new System.EventHandler(this.mnuRect_Click);
			// 
			// mnuCircle
			// 
			this.mnuCircle.Index = 2;
			this.mnuCircle.Text = "圆";
			this.mnuCircle.Click += new System.EventHandler(this.mnuCircle_Click);
			// 
			// mnuArc
			// 
			this.mnuArc.Index = 3;
			this.mnuArc.Text = "圆弧";
			this.mnuArc.Click += new System.EventHandler(this.mnuArc_Click);
			// 
			// mnuText
			// 
			this.mnuText.Index = 4;
			this.mnuText.Text = "文本";
			this.mnuText.Click += new System.EventHandler(this.mnuText_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.BackColor = System.Drawing.Color.White;
			this.ClientSize = new System.Drawing.Size(768, 433);
			this.Menu = this.mainMenu1;
			this.Name = "Form1";
			this.Text = "Net-CAD";
			this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
			this.Load += new System.EventHandler(this.Form1_Load);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{
			Graphics g= this.CreateGraphics();
			g.FillRectangle(Brushes.White, this.ClientRectangle);
			g.PageUnit = GraphicsUnit.Pixel;

			//相对于Ｘ轴进行镜像变换
			Matrix mat=new Matrix(1, 0, 0, -1, 0, 0);
			g.Transform = mat;
			Rectangle rect= this.ClientRectangle;
			float viewDX = rect.Width / 2;
			float viewDY = rect.Height / 2;
			float viewScale=1;

			m.Coordinate(g,ges,viewDX,viewDY,viewScale);

			aCommand=creLine;
		}

		protected override void OnPaint(PaintEventArgs e)
		{
			Graphics g=this.CreateGraphics();
			m.DrawAll(g,ges);
			m.DrawSel(g,geSels);
		}

		public void Coordinate(Graphics g)
		{
			//g.TranslateTransform(viewDX, viewDY, MatrixOrder.Append);
			//g.ScaleTransform(viewScale, viewScale, MatrixOrder.Append);
			g.Clear(Color.White);
			//drawall(g);
		}

		private void mnuLine_Click(object sender, System.EventArgs e)
		{
		    aCommand=creLine;
		}

		private void mnuCircle_Click(object sender, System.EventArgs e)
		{
			aCommand=creCircle;
		}

		private void mnuArc_Click(object sender, System.EventArgs e)
		{
			aCommand=creArc;
		}

		private void mnuText_Click(object sender, System.EventArgs e)
		{
			aCommand=creText;
		}

		protected override void OnMouseDown(MouseEventArgs e)
		{
			Graphics g=this.CreateGraphics();

			PointF aPos=m.PagetoWorld(new PointF(e.X, e.Y));
			if (e.Button==MouseButtons.Left)
			{
				aCommand.LButtonDown(g,aPos,ges,geSels);
			}
			else if(e.Button==MouseButtons.Right)
			{
				aCommand.RButtonDown(g,aPos);
			}
		}

		protected override void OnMouseMove(MouseEventArgs e)
		{
			Graphics g=this.CreateGraphics();
			PointF aPos=m.PagetoWorld(new PointF(e.X, e.Y));
			aCommand.MouseMove(g,aPos);
		}

		private void mnuRect_Click(object sender, System.EventArgs e)
		{
			aCommand=creRect;
		}
	}
}