一个C#版的类似迅雷下载显示控件

  

近几日，闲来无时感觉迅雷的下载进度显示模块做的不错，心血来潮，就简单写了一个控件。

我先直接上源码：

程序有注释的，第一次写，水平不高请各们高手指教。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;

namespace Liyou.Progess
{
  public partial class RectangleProgess : UserControl
  {
  /// <summary>
  /// 网格列数
  /// </summary>
  private int cols = 50;
  /// <summary>
  /// 网格行数
  /// </summary>
  private int rows = 100;
  /// <summary>
  /// 存储变量的数组，其中X表示第几列，Y表示值
  /// </summary>
  private Point[] _Point;
  /// <summary>
  /// 控件的背景色
  /// </summary>
  private Color drawcolor = Color.Green;
  /// <summary>
  /// 控件当前值
  /// </summary>
  private int _value=0;
  /// <summary>
  /// 值
  /// </summary>
  public int DisplayValue
  {
  get
  {
  return _value;
  }
  set
  {
  _value = value;
  }
  }
  /// <summary>
  /// 绘制色
  /// </summary>
  public Color DrawColor
  {
  get
  {
  return drawcolor;
  }
  set
  {
  drawcolor = value;
  }
  }
  /// <summary>
  /// 是否开始显示进度
  /// </summary>
  public bool EnableDisplay
  {
  get
  {
  return timer1.Enabled;
  }
  set
  {
  timer1.Enabled = value;
  }
  }
  /// <summary>
  /// 返回和设计行值
  /// </summary>
  public int Rows
  {
  get
  {
  return rows;
  }
  set
  {
  if(value>=0&&value<=100)
  rows = value;
  }
  }
  /// <summary>
  /// 高
  /// </summary>
  public int H
  {
  get
  {
  return this.Height;
  }
  set
  {
  this.Height = value;
  }
  }
  /// <summary>
  /// 宽
  /// </summary>
  public int W
  {
  get
  {
  return this.Width;
  }
  set
  {
  this.Width = value;
  }
  }
  /// <summary>
  ///初始化
  /// </summary>
  public RectangleProgess()
  {
  InitializeComponent();
  //初始化变量
  _Point = new Point[cols];
  InitPoint();
  }
  private void InitPoint()
  {
  //初始化变量，每个赋0值
  for (int i = 0; i < _Point.Length; i++)
  {
  _Point[i] = new Point(i, 0);
  }
  }
  /// <summary>
  /// 关键代码，移位
  ///根据新传入的变量值依次向左移一位，最左一位的数据丢弃
  /// </summary>
  /// <param name="value"></param>
  private void MoveBit(int value)
  {
  for (int i = _Point.Length - 1; i > 0; i--)
  {
  _Point[i] = new Point(i,_Point[i - 1].Y);
  }
  _Point[0] = new Point(0, value);
  }
  /// <summary>
  /// 画图，进行显示
  /// </summary>
  private void Display()
  {
  Graphics g = this.CreateGraphics();
  g.Clear(this.BackColor);
  g.Dispose();
  for (int i = 0; i < _Point.Length; i++)
  {
  DrawFromPoint(_Point[i]);
  }
  }
  /// <summary>
  /// 根据变量数组进行画图
  /// </summary>
  /// <param name="pi"></param>
  private void DrawFromPoint(Point pi)
  {
  Graphics g = this.CreateGraphics();
  SolidBrush brush = new SolidBrush(DrawColor);
  Point pp=GetDrawPoint(pi);
  g.FillRectangle(brush, pp.X, pp.Y, W / cols, pi.Y * H / rows);
  g.Dispose();
  }
  /// <summary>
  /// 计算相应点在画图中的坐标
  /// </summary>
  /// <param name="pi"></param>
  /// <returns></returns>
  private Point GetDrawPoint(Point pi)
  {
  int x = W - (pi.X + 1) * W / cols;
  int y = H - (pi.Y * H / Rows);
  return new Point(x, y);

  }

  private void timer1_Tick(object sender, EventArgs e)
  {
  MoveBit(DisplayValue);
  Display();
  }
  }
}