（三十六）c#Winform自定义控件-步骤控件-HZHControls
官网
前提
入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。
GitHub：https://github.com/kwwwvagaa/NetWinformControl
码云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
如果觉得写的还行，请点个 star 支持一下吧
欢迎前来交流探讨： 企鹅群568015492 idkey=6e08741ef16fe53bf0314c1c9e336c4f626047943a8b76bac062361bab6b4f8d">
目录
https://www.cnblogs.com/bfyx/p/11364884.html
准备工作
也没什么可准备的了
开始
添加一个用户控件，命名UCStep
来点属性
public event EventHandler IndexChecked;
private Color m_stepBackColor = Color.FromArgb(, , );
/// <summary>
/// 步骤背景色
/// </summary>
[Description("步骤背景色"), Category("自定义")]
public Color StepBackColor
{
get { return m_stepBackColor; }
set { m_stepBackColor = value; }
}
private Color m_stepForeColor = Color.FromArgb(, , );
/// <summary>
/// 步骤前景色
/// </summary>
[Description("步骤前景色"), Category("自定义")]
public Color StepForeColor
{
get { return m_stepForeColor; }
set { m_stepForeColor = value; }
}
private Color m_stepFontColor = Color.White;
/// <summary>
/// 步骤文字颜色
/// </summary>
[Description("步骤文字景色"), Category("自定义")]
public Color StepFontColor
{
get { return m_stepFontColor; }
set { m_stepFontColor = value; }
}
private int m_stepWidth = ;
/// <summary>
/// 步骤宽度
/// </summary>
[Description("步骤宽度景色"), Category("自定义")]
public int StepWidth
{
get { return m_stepWidth; }
set { m_stepWidth = value; }
}
private string[] m_steps = new string[] { "step1", "step2", "step3" };
[Description("步骤"), Category("自定义")]
public string[] Steps
{
get { return m_steps; }
set
{
if (m_steps == null || m_steps.Length <= )
return;
m_steps = value;
Refresh();
}
}
private int m_stepIndex = ;
[Description("步骤位置"), Category("自定义")]
public int StepIndex
{
get { return m_stepIndex; }
set
{
if (m_stepIndex >= Steps.Length)
return;
m_stepIndex = value;
Refresh();
if (IndexChecked != null)
{
IndexChecked(this, null);
}
}
}
重绘
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var g = e.Graphics;
g.SmoothingMode = SmoothingMode.AntiAlias; //使绘图质量最高，即消除锯齿
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.CompositingQuality = CompositingQuality.HighQuality; if (m_steps != null && m_steps.Length > )
{
System.Drawing.SizeF sizeFirst = g.MeasureString(m_steps[], this.Font);
int y = (this.Height - m_stepWidth - - (int)sizeFirst.Height) / ;
if (y < )
y = ; int intTxtY = y + m_stepWidth + ;
int intLeft = ;
if (sizeFirst.Width > m_stepWidth)
{
intLeft = (int)(sizeFirst.Width - m_stepWidth) / + ;
} int intRight = ;
System.Drawing.SizeF sizeEnd = g.MeasureString(m_steps[m_steps.Length - ], this.Font);
if (sizeEnd.Width > m_stepWidth)
{
intRight = (int)(sizeEnd.Width - m_stepWidth) / + ;
} int intSplitWidth = ;
intSplitWidth = (this.Width - m_steps.Length - (m_steps.Length * m_stepWidth) - intRight) / (m_steps.Length - );
if (intSplitWidth < )
intSplitWidth = ; for (int i = ; i < m_steps.Length; i++)
{
#region 画圆，横线
g.FillEllipse(new SolidBrush(m_stepBackColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth), y), new Size(m_stepWidth, m_stepWidth))); if (m_stepIndex > i)
{
g.FillEllipse(new SolidBrush(m_stepForeColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth) + , y + ), new Size(m_stepWidth - , m_stepWidth - ))); if (i != m_steps.Length - )
{
if (m_stepIndex == i + )
{
g.DrawLine(new Pen(m_stepForeColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth) - intSplitWidth / , y + (m_stepWidth / )));
g.DrawLine(new Pen(m_stepBackColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth + intSplitWidth / , y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));
}
else
{
g.DrawLine(new Pen(m_stepForeColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));
}
}
}
else
{
if (i != m_steps.Length - )
{
g.DrawLine(new Pen(m_stepBackColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));
}
} System.Drawing.SizeF _numSize = g.MeasureString((i + ).ToString(), this.Font);
g.DrawString((i + ).ToString(), Font, new SolidBrush(m_stepFontColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)_numSize.Width) / + , y + (m_stepWidth - (int)_numSize.Height) / + ));
#endregion System.Drawing.SizeF sizeTxt = g.MeasureString(m_steps[i], this.Font);
g.DrawString(m_steps[i], Font, new SolidBrush(m_stepIndex > i ? m_stepForeColor : m_stepBackColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)sizeTxt.Width) / + , intTxtY));
}
} }
全部代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D; namespace HZH_Controls.Controls
{
public partial class UCStep : UserControl
{ [Description("步骤更改事件"), Category("自定义")]
public event EventHandler IndexChecked; private Color m_stepBackColor = Color.FromArgb(, , );
/// <summary>
/// 步骤背景色
/// </summary>
[Description("步骤背景色"), Category("自定义")]
public Color StepBackColor
{
get { return m_stepBackColor; }
set { m_stepBackColor = value; }
} private Color m_stepForeColor = Color.FromArgb(, , );
/// <summary>
/// 步骤前景色
/// </summary>
[Description("步骤前景色"), Category("自定义")]
public Color StepForeColor
{
get { return m_stepForeColor; }
set { m_stepForeColor = value; }
} private Color m_stepFontColor = Color.White;
/// <summary>
/// 步骤文字颜色
/// </summary>
[Description("步骤文字景色"), Category("自定义")]
public Color StepFontColor
{
get { return m_stepFontColor; }
set { m_stepFontColor = value; }
} private int m_stepWidth = ;
/// <summary>
/// 步骤宽度
/// </summary>
[Description("步骤宽度景色"), Category("自定义")]
public int StepWidth
{
get { return m_stepWidth; }
set { m_stepWidth = value; }
} private string[] m_steps = new string[] { "step1", "step2", "step3" }; [Description("步骤"), Category("自定义")]
public string[] Steps
{
get { return m_steps; }
set
{
if (m_steps == null || m_steps.Length <= )
return;
m_steps = value;
Refresh();
}
} private int m_stepIndex = ; [Description("步骤位置"), Category("自定义")]
public int StepIndex
{
get { return m_stepIndex; }
set
{
if (m_stepIndex >= Steps.Length)
return;
m_stepIndex = value;
Refresh();
if (IndexChecked != null)
{
IndexChecked(this, null);
}
}
} public UCStep()
{
InitializeComponent();
this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
this.SetStyle(ControlStyles.DoubleBuffer, true);
this.SetStyle(ControlStyles.ResizeRedraw, true);
this.SetStyle(ControlStyles.Selectable, true);
this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.SetStyle(ControlStyles.UserPaint, true);
} protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var g = e.Graphics;
g.SmoothingMode = SmoothingMode.AntiAlias; //使绘图质量最高，即消除锯齿
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.CompositingQuality = CompositingQuality.HighQuality; if (m_steps != null && m_steps.Length > )
{
System.Drawing.SizeF sizeFirst = g.MeasureString(m_steps[], this.Font);
int y = (this.Height - m_stepWidth - - (int)sizeFirst.Height) / ;
if (y < )
y = ; int intTxtY = y + m_stepWidth + ;
int intLeft = ;
if (sizeFirst.Width > m_stepWidth)
{
intLeft = (int)(sizeFirst.Width - m_stepWidth) / + ;
} int intRight = ;
System.Drawing.SizeF sizeEnd = g.MeasureString(m_steps[m_steps.Length - ], this.Font);
if (sizeEnd.Width > m_stepWidth)
{
intRight = (int)(sizeEnd.Width - m_stepWidth) / + ;
} int intSplitWidth = ;
intSplitWidth = (this.Width - m_steps.Length - (m_steps.Length * m_stepWidth) - intRight) / (m_steps.Length - );
if (intSplitWidth < )
intSplitWidth = ; for (int i = ; i < m_steps.Length; i++)
{
#region 画圆，横线
g.FillEllipse(new SolidBrush(m_stepBackColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth), y), new Size(m_stepWidth, m_stepWidth))); if (m_stepIndex > i)
{
g.FillEllipse(new SolidBrush(m_stepForeColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth) + , y + ), new Size(m_stepWidth - , m_stepWidth - ))); if (i != m_steps.Length - )
{
if (m_stepIndex == i + )
{
g.DrawLine(new Pen(m_stepForeColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth) - intSplitWidth / , y + (m_stepWidth / )));
g.DrawLine(new Pen(m_stepBackColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth + intSplitWidth / , y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));
}
else
{
g.DrawLine(new Pen(m_stepForeColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));
}
}
}
else
{
if (i != m_steps.Length - )
{
g.DrawLine(new Pen(m_stepBackColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));
}
} System.Drawing.SizeF _numSize = g.MeasureString((i + ).ToString(), this.Font);
g.DrawString((i + ).ToString(), Font, new SolidBrush(m_stepFontColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)_numSize.Width) / + , y + (m_stepWidth - (int)_numSize.Height) / + ));
#endregion System.Drawing.SizeF sizeTxt = g.MeasureString(m_steps[i], this.Font);
g.DrawString(m_steps[i], Font, new SolidBrush(m_stepIndex > i ? m_stepForeColor : m_stepBackColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)sizeTxt.Width) / + , intTxtY));
}
} }
}
}
namespace HZH_Controls.Controls
{
partial class UCStep
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null; /// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
} #region 组件设计器生成的代码 /// <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.SuspendLayout();
//
// UCStep
//
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.BackColor = System.Drawing.Color.Transparent;
this.Name = "UCStep";
this.Size = new System.Drawing.Size(, );
this.ResumeLayout(false); } #endregion
}
}
用处及效果
最后的话
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