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由于项目需要，需要一个描述流程步骤的控件，于是网上找了相关例子，在做了些修改
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace StepBar
{
[ToolboxBitmap(typeof(StepBar),"title.bmp")]
public partial class StepBar: UserControl
{
public StepBar()
{
InitializeComponent();
this.Height = 68;
}
private List<StepEntity> dataSourceList = null;
/// <summary> 当前步骤
/// </summary>
public int CurrentStep { get; set; }
/// <summary>完成步骤颜色
/// </summary>
public Color CompletedColor { get; set; }
/// <summary>当前步骤颜色
/// </summary>
public Color CurrentColor { get; set; }
/// <summary>为完成步骤颜色
/// </summary>
public Color UnCompletedColor { get; set; }
/// <summary> 步骤线条颜色
/// </summary>
public Color LineColor { get; set; }
/// <summary>
/// 圆形节点直径
/// </summary>
public int StepNodeWidth { get; set; }
/// <summary>
/// 字体大小
/// </summary>
public Font NFont { get; set; }
/// <summary>
/// 序号字体大小
/// </summary>
public Font StepFont { get; set; }
[Browsable(true), Category("StepBar")]
public List<StepEntity> ListDataSource
{
get
{
return dataSourceList;
}
set
{
if (dataSourceList != value)
{
dataSourceList = value;
Invalidate();
}
}
}
private void StepBar_Paint(object sender, PaintEventArgs e)
{
if (this.ListDataSource != null)
{
int CenterY = this.Height / 2;
int index = 1;//执行步骤
int count = ListDataSource.Count;
int lineWidth = 1;//120
int wordWidth = 0;
//int StepNodeWidth = 28;//圆形点直径
e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
Brush brush = new SolidBrush(Color.Gray);
Pen p = new Pen(brush, lineWidth);//未完成线条画笔
Brush brushNode = new SolidBrush(LineColor);//线条画笔
Pen penNode = new Pen(brushNode, lineWidth);
Brush brushNodeCompleted = new SolidBrush(CompletedColor);//完成步骤画笔
Pen penNodeCompleted = new Pen(brushNodeCompleted, lineWidth);
int initX = 6;
// Font NFont = new Font("微软雅黑", 12);
//Font StepFont = new Font("微软雅黑", 11, FontStyle.Bold);
//计算字体总长度
foreach (var item in ListDataSource)
{
SizeF sNode = e.Graphics.MeasureString(item.StepName, NFont);
wordWidth = (int)Math.Round(sNode.Width);
}
lineWidth = (this.Width - StepNodeWidth * count - 12) / (count - 1) - 8;
int NodeNameWidth = 0;
foreach (var item in ListDataSource)
{
Rectangle rec = new Rectangle(initX, 6, StepNodeWidth, StepNodeWidth);
if (CurrentStep == item.StepOrder)
{
if (item.StepState == StepEntity.eumStepState.CurrentNow)
{
e.Graphics.DrawEllipse(new Pen(CurrentColor, 1), rec);
e.Graphics.FillEllipse(new SolidBrush(CurrentColor), rec);
}
else
{
e.Graphics.DrawEllipse(penNodeCompleted,rec);
e.Graphics.FillEllipse(brushNodeCompleted,rec);
}
SizeF fTitle = e.Graphics.MeasureString(index.ToString(), StepFont);
Point pTitle = new Point(initX StepNodeWidth / 2 - (int)Math.Round(fTitle.Width) / 2, 6 (StepNodeWidth / 2 - (int)Math.Round(fTitle.Height / 2)));
e.Graphics.DrawString(index.ToString(), StepFont, Brushes.White, pTitle);//绘制步骤序号信息
SizeF sNode = e.Graphics.MeasureString(item.StepName, NFont);//计算当前字体长度
Point pNode = new Point(initX - (int)(((int)sNode.Width - StepNodeWidth) / 2), 6 StepNodeWidth 2);
e.Graphics.DrawString(item.StepName, new Font(NFont, FontStyle.Bold), brushNode, pNode);//绘制步骤字体信息
NodeNameWidth = (int)Math.Round(sNode.Width);
if (index < count)
{
e.Graphics.DrawLine(p, initX StepNodeWidth 4, StepNodeWidth / 2 6, initX StepNodeWidth lineWidth, StepNodeWidth / 2 6);
}
}
else if (item.StepOrder < CurrentStep)
{
e.Graphics.DrawEllipse(penNodeCompleted, rec);
e.Graphics.FillEllipse(new SolidBrush(CompletedColor), rec);
RectangleF recRF = new RectangleF(rec.X 6, rec.Y 6, rec.Width - 12, rec.Height - 12);
// e.Graphics.DrawImage(ControlResource.check_lightblue, recRF);
SizeF fTitle = e.Graphics.MeasureString(index.ToString(), StepFont);
Point pTitle = new Point(initX StepNodeWidth / 2 - (int)Math.Round(fTitle.Width) / 2, 6 (StepNodeWidth / 2 - (int)Math.Round(fTitle.Height / 2)));
e.Graphics.DrawString(index.ToString(), StepFont, Brushes.White, pTitle);//绘制步骤序号信息
SizeF sNode = e.Graphics.MeasureString(item.StepName, NFont);
Point pNode = new Point(initX - (int)(((int)sNode.Width - StepNodeWidth) / 2), 6 StepNodeWidth 2);
e.Graphics.DrawString(item.StepName, NFont, brushNode, pNode);//绘制步骤字体信息
NodeNameWidth = (int)Math.Round(sNode.Width);
if (index < count)
{
e.Graphics.DrawLine(p, initX StepNodeWidth 4, StepNodeWidth / 2 6, initX StepNodeWidth lineWidth, StepNodeWidth / 2 6);
}
}
else
{
e.Graphics.DrawEllipse(p, rec);
//
SizeF fTitle = e.Graphics.MeasureString(index.ToString(), StepFont);
Point pTitle = new Point(initX StepNodeWidth / 2 - (int)Math.Round(fTitle.Width) / 2, 6 (StepNodeWidth / 2 - (int)Math.Round(fTitle.Height / 2)));
e.Graphics.DrawString(index.ToString(), StepFont, brush, pTitle);//绘制序号信息
//nodeName
SizeF sNode = e.Graphics.MeasureString(item.StepName, NFont);
Point pNode = new Point(initX - (int)(((int)sNode.Width - StepNodeWidth) / 2), 6 StepNodeWidth 2);
e.Graphics.DrawString(item.StepName, NFont, brushNode, pNode);//绘制步骤信息
NodeNameWidth = (int)Math.Round(sNode.Width);
if (index < count)
{
//line
e.Graphics.DrawLine(p, initX StepNodeWidth 4, StepNodeWidth / 2 6, initX StepNodeWidth lineWidth, StepNodeWidth / 2 6);
}
}
//描述信息
if (item.StepDesc != "")
{
//Point pNode = new Point(initX StepNodeWH, CenterY 3);
//e.Graphics.DrawString(item.StepDesc,new Font(nFont.FontFamily,10),brush, pNode);
}
index ;
//8 is space width
initX = initX lineWidth StepNodeWidth 8;
}
}
}
}
}