文章目录
准备工作
GDI+需要有一点了解,不知道的可以百度瞅瞅
开始
添加一个用户控件,命名UCSwitch
添加一个枚举用以控制样式
public enum SwitchType
{
/// <summary>
/// 椭圆
/// </summary>
Ellipse,
/// <summary>
/// 四边形
/// </summary>
Quadrilateral,
/// <summary>
/// 横线
/// </summary>
Line
}
添加属性
[Description("选中改变事件"), Category("自定义")]
public event EventHandler CheckedChanged;
private Color m_trueColor = Color.FromArgb(34, 163, 169);
[Description("选中时颜色"), Category("自定义")]
public Color TrueColor
{
get { return m_trueColor; }
set
{
m_trueColor = value;
Refresh();
}
}
private Color m_falseColor = Color.FromArgb(111, 122, 126);
[Description("没有选中时颜色"), Category("自定义")]
public Color FalseColor
{
get { return m_falseColor; }
set
{
m_falseColor = value;
Refresh();
}
}
private bool m_checked;
[Description("是否选中"), Category("自定义")]
public bool Checked
{
get { return m_checked; }
set
{
m_checked = value;
Refresh();
if (CheckedChanged != null)
{
CheckedChanged(this, null);
}
}
}
private string[] m_texts;
[Description("文本值,当选中或没有选中时显示,必须是长度为2的数组"), Category("自定义")]
public string[] Texts
{
get { return m_texts; }
set
{
m_texts = value;
Refresh();
}
}
private SwitchType m_switchType = SwitchType.Ellipse;
[Description("显示类型"), Category("自定义")]
public SwitchType SwitchType
{
get { return m_switchType; }
set
{
m_switchType = value;
Refresh();
}
}
public override Font Font
{
get
{
return base.Font;
}
set
{
base.Font = value;
Refresh();
}
}
重绘
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var g = e.Graphics;
g.SetGDIHigh();
if (m_switchType == HZH_Controls.Controls.SwitchType.Ellipse)
{
var fillColor = m_checked ? m_trueColor : m_falseColor;
GraphicsPath path = new GraphicsPath();
path.AddLine(new Point(this.Height / 2, 1), new Point(this.Width - this.Height / 2, 1));
path.AddArc(new Rectangle(this.Width - this.Height - 1, 1, this.Height - 2, this.Height - 2), -90, 180);
path.AddLine(new Point(this.Width - this.Height / 2, this.Height - 1), new Point(this.Height / 2, this.Height - 1));
path.AddArc(new Rectangle(1, 1, this.Height - 2, this.Height - 2), 90, 180);
g.FillPath(new SolidBrush(fillColor), path);
string strText = string.Empty;
if (m_texts != null && m_texts.Length == 2)
{
if (m_checked)
{
strText = m_texts[0];
}
else
{
strText = m_texts[1];
}
}
if (m_checked)
{
g.FillEllipse(Brushes.White, new Rectangle(this.Width - this.Height - 1 + 2, 1 + 2, this.Height - 2 - 4, this.Height - 2 - 4));
if (string.IsNullOrEmpty(strText))
{
g.DrawEllipse(new Pen(Color.White, 2), new Rectangle((this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
else
{
System.Drawing.SizeF sizeF = g.MeasureString(strText.Replace(" ", "A"), Font);
int intTextY = (this.Height - (int)sizeF.Height) / 2 + 2;
g.DrawString(strText, Font, Brushes.White, new Point((this.Height - 2 - 4) / 2, intTextY));
}
}
else
{
g.FillEllipse(Brushes.White, new Rectangle(1 + 2, 1 + 2, this.Height - 2 - 4, this.Height - 2 - 4));
if (string.IsNullOrEmpty(strText))
{
g.DrawEllipse(new Pen(Color.White, 2), new Rectangle(this.Width - 2 - (this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
else
{
System.Drawing.SizeF sizeF = g.MeasureString(strText.Replace(" ", "A"), Font);
int intTextY = (this.Height - (int)sizeF.Height) / 2 + 2;
g.DrawString(strText, Font, Brushes.White, new Point(this.Width - 2 - (this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2 - (int)sizeF.Width / 2, intTextY));
}
}
}
else if (m_switchType == HZH_Controls.Controls.SwitchType.Quadrilateral)
{
var fillColor = m_checked ? m_trueColor : m_falseColor;
GraphicsPath path = new GraphicsPath();
int intRadius = 5;
path.AddArc(0, 0, intRadius, intRadius, 180f, 90f);
path.AddArc(this.Width - intRadius - 1, 0, intRadius, intRadius, 270f, 90f);
path.AddArc(this.Width - intRadius - 1, this.Height - intRadius - 1, intRadius, intRadius, 0f, 90f);
path.AddArc(0, this.Height - intRadius - 1, intRadius, intRadius, 90f, 90f);
g.FillPath(new SolidBrush(fillColor), path);
string strText = string.Empty;
if (m_texts != null && m_texts.Length == 2)
{
if (m_checked)
{
strText = m_texts[0];
}
else
{
strText = m_texts[1];
}
}
if (m_checked)
{
GraphicsPath path2 = new GraphicsPath();
path2.AddArc(this.Width - this.Height - 1 + 2, 1 + 2, intRadius, intRadius, 180f, 90f);
path2.AddArc(this.Width - 1 - 2 - intRadius, 1 + 2, intRadius, intRadius, 270f, 90f);
path2.AddArc(this.Width - 1 - 2 - intRadius, this.Height - 2 - intRadius - 1, intRadius, intRadius, 0f, 90f);
path2.AddArc(this.Width - this.Height - 1 + 2, this.Height - 2 - intRadius - 1, intRadius, intRadius, 90f, 90f);
g.FillPath(Brushes.White, path2);
if (string.IsNullOrEmpty(strText))
{
g.DrawEllipse(new Pen(Color.White, 2), new Rectangle((this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
else
{
System.Drawing.SizeF sizeF = g.MeasureString(strText.Replace(" ", "A"), Font);
int intTextY = (this.Height - (int)sizeF.Height) / 2 + 2;
g.DrawString(strText, Font, Brushes.White, new Point((this.Height - 2 - 4) / 2, intTextY));
}
}
else
{
GraphicsPath path2 = new GraphicsPath();
path2.AddArc(1 + 2, 1 + 2, intRadius, intRadius, 180f, 90f);
path2.AddArc(this.Height - 2 - intRadius, 1 + 2, intRadius, intRadius, 270f, 90f);
path2.AddArc(this.Height - 2 - intRadius, this.Height - 2 - intRadius - 1, intRadius, intRadius, 0f, 90f);
path2.AddArc(1 + 2, this.Height - 2 - intRadius - 1, intRadius, intRadius, 90f, 90f);
g.FillPath(Brushes.White, path2);
//g.FillEllipse(Brushes.White, new Rectangle(1 + 2, 1 + 2, this.Height - 2 - 4, this.Height - 2 - 4));
if (string.IsNullOrEmpty(strText))
{
g.DrawEllipse(new Pen(Color.White, 2), new Rectangle(this.Width - 2 - (this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
else
{
System.Drawing.SizeF sizeF = g.MeasureString(strText.Replace(" ", "A"), Font);
int intTextY = (this.Height - (int)sizeF.Height) / 2 + 2;
g.DrawString(strText, Font, Brushes.White, new Point(this.Width - 2 - (this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2 - (int)sizeF.Width / 2, intTextY));
}
}
}
else
{
var fillColor = m_checked ? m_trueColor : m_falseColor;
int intLineHeight = (this.Height - 2 - 4) / 2;
GraphicsPath path = new GraphicsPath();
path.AddLine(new Point(this.Height / 2, (this.Height - intLineHeight) / 2), new Point(this.Width - this.Height / 2, (this.Height - intLineHeight) / 2));
path.AddArc(new Rectangle(this.Width - this.Height / 2 - intLineHeight - 1, (this.Height - intLineHeight) / 2, intLineHeight, intLineHeight), -90, 180);
path.AddLine(new Point(this.Width - this.Height / 2, (this.Height - intLineHeight) / 2 + intLineHeight), new Point(this.Width - this.Height / 2, (this.Height - intLineHeight) / 2 + intLineHeight));
path.AddArc(new Rectangle(this.Height / 2, (this.Height - intLineHeight) / 2, intLineHeight, intLineHeight), 90, 180);
g.FillPath(new SolidBrush(fillColor), path);
if (m_checked)
{
g.FillEllipse(new SolidBrush(fillColor), new Rectangle(this.Width - this.Height - 1 + 2, 1 + 2, this.Height - 2 - 4, this.Height - 2 - 4));
g.FillEllipse(Brushes.White, new Rectangle(this.Width - 2 - (this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2 - 4, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
else
{
g.FillEllipse(new SolidBrush(fillColor), new Rectangle(1 + 2, 1 + 2, this.Height - 2 - 4, this.Height - 2 - 4));
g.FillEllipse(Brushes.White, new Rectangle((this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2 + 4, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
}
}
处理一下点击事件
void UCSwitch_MouseDown(object sender, MouseEventArgs e)
{
Checked = !Checked;
}
完整代码
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
{
[DefaultEvent("CheckedChanged")]
public partial class UCSwitch : UserControl
{
[Description("选中改变事件"), Category("自定义")]
public event EventHandler CheckedChanged;
private Color m_trueColor = Color.FromArgb(34, 163, 169);
[Description("选中时颜色"), Category("自定义")]
public Color TrueColor
{
get { return m_trueColor; }
set
{
m_trueColor = value;
Refresh();
}
}
private Color m_falseColor = Color.FromArgb(111, 122, 126);
[Description("没有选中时颜色"), Category("自定义")]
public Color FalseColor
{
get { return m_falseColor; }
set
{
m_falseColor = value;
Refresh();
}
}
private bool m_checked;
[Description("是否选中"), Category("自定义")]
public bool Checked
{
get { return m_checked; }
set
{
m_checked = value;
Refresh();
if (CheckedChanged != null)
{
CheckedChanged(this, null);
}
}
}
private string[] m_texts;
[Description("文本值,当选中或没有选中时显示,必须是长度为2的数组"), Category("自定义")]
public string[] Texts
{
get { return m_texts; }
set
{
m_texts = value;
Refresh();
}
}
private SwitchType m_switchType = SwitchType.Ellipse;
[Description("显示类型"), Category("自定义")]
public SwitchType SwitchType
{
get { return m_switchType; }
set
{
m_switchType = value;
Refresh();
}
}
public override Font Font
{
get
{
return base.Font;
}
set
{
base.Font = value;
Refresh();
}
}
public UCSwitch()
{
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);
this.MouseDown += UCSwitch_MouseDown;
}
void UCSwitch_MouseDown(object sender, MouseEventArgs e)
{
Checked = !Checked;
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var g = e.Graphics;
g.SetGDIHigh();
if (m_switchType == HZH_Controls.Controls.SwitchType.Ellipse)
{
var fillColor = m_checked ? m_trueColor : m_falseColor;
GraphicsPath path = new GraphicsPath();
path.AddLine(new Point(this.Height / 2, 1), new Point(this.Width - this.Height / 2, 1));
path.AddArc(new Rectangle(this.Width - this.Height - 1, 1, this.Height - 2, this.Height - 2), -90, 180);
path.AddLine(new Point(this.Width - this.Height / 2, this.Height - 1), new Point(this.Height / 2, this.Height - 1));
path.AddArc(new Rectangle(1, 1, this.Height - 2, this.Height - 2), 90, 180);
g.FillPath(new SolidBrush(fillColor), path);
string strText = string.Empty;
if (m_texts != null && m_texts.Length == 2)
{
if (m_checked)
{
strText = m_texts[0];
}
else
{
strText = m_texts[1];
}
}
if (m_checked)
{
g.FillEllipse(Brushes.White, new Rectangle(this.Width - this.Height - 1 + 2, 1 + 2, this.Height - 2 - 4, this.Height - 2 - 4));
if (string.IsNullOrEmpty(strText))
{
g.DrawEllipse(new Pen(Color.White, 2), new Rectangle((this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
else
{
System.Drawing.SizeF sizeF = g.MeasureString(strText.Replace(" ", "A"), Font);
int intTextY = (this.Height - (int)sizeF.Height) / 2 + 2;
g.DrawString(strText, Font, Brushes.White, new Point((this.Height - 2 - 4) / 2, intTextY));
}
}
else
{
g.FillEllipse(Brushes.White, new Rectangle(1 + 2, 1 + 2, this.Height - 2 - 4, this.Height - 2 - 4));
if (string.IsNullOrEmpty(strText))
{
g.DrawEllipse(new Pen(Color.White, 2), new Rectangle(this.Width - 2 - (this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
else
{
System.Drawing.SizeF sizeF = g.MeasureString(strText.Replace(" ", "A"), Font);
int intTextY = (this.Height - (int)sizeF.Height) / 2 + 2;
g.DrawString(strText, Font, Brushes.White, new Point(this.Width - 2 - (this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2 - (int)sizeF.Width / 2, intTextY));
}
}
}
else if (m_switchType == HZH_Controls.Controls.SwitchType.Quadrilateral)
{
var fillColor = m_checked ? m_trueColor : m_falseColor;
GraphicsPath path = new GraphicsPath();
int intRadius = 5;
path.AddArc(0, 0, intRadius, intRadius, 180f, 90f);
path.AddArc(this.Width - intRadius - 1, 0, intRadius, intRadius, 270f, 90f);
path.AddArc(this.Width - intRadius - 1, this.Height - intRadius - 1, intRadius, intRadius, 0f, 90f);
path.AddArc(0, this.Height - intRadius - 1, intRadius, intRadius, 90f, 90f);
g.FillPath(new SolidBrush(fillColor), path);
string strText = string.Empty;
if (m_texts != null && m_texts.Length == 2)
{
if (m_checked)
{
strText = m_texts[0];
}
else
{
strText = m_texts[1];
}
}
if (m_checked)
{
GraphicsPath path2 = new GraphicsPath();
path2.AddArc(this.Width - this.Height - 1 + 2, 1 + 2, intRadius, intRadius, 180f, 90f);
path2.AddArc(this.Width - 1 - 2 - intRadius, 1 + 2, intRadius, intRadius, 270f, 90f);
path2.AddArc(this.Width - 1 - 2 - intRadius, this.Height - 2 - intRadius - 1, intRadius, intRadius, 0f, 90f);
path2.AddArc(this.Width - this.Height - 1 + 2, this.Height - 2 - intRadius - 1, intRadius, intRadius, 90f, 90f);
g.FillPath(Brushes.White, path2);
if (string.IsNullOrEmpty(strText))
{
g.DrawEllipse(new Pen(Color.White, 2), new Rectangle((this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
else
{
System.Drawing.SizeF sizeF = g.MeasureString(strText.Replace(" ", "A"), Font);
int intTextY = (this.Height - (int)sizeF.Height) / 2 + 2;
g.DrawString(strText, Font, Brushes.White, new Point((this.Height - 2 - 4) / 2, intTextY));
}
}
else
{
GraphicsPath path2 = new GraphicsPath();
path2.AddArc(1 + 2, 1 + 2, intRadius, intRadius, 180f, 90f);
path2.AddArc(this.Height - 2 - intRadius, 1 + 2, intRadius, intRadius, 270f, 90f);
path2.AddArc(this.Height - 2 - intRadius, this.Height - 2 - intRadius - 1, intRadius, intRadius, 0f, 90f);
path2.AddArc(1 + 2, this.Height - 2 - intRadius - 1, intRadius, intRadius, 90f, 90f);
g.FillPath(Brushes.White, path2);
//g.FillEllipse(Brushes.White, new Rectangle(1 + 2, 1 + 2, this.Height - 2 - 4, this.Height - 2 - 4));
if (string.IsNullOrEmpty(strText))
{
g.DrawEllipse(new Pen(Color.White, 2), new Rectangle(this.Width - 2 - (this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
else
{
System.Drawing.SizeF sizeF = g.MeasureString(strText.Replace(" ", "A"), Font);
int intTextY = (this.Height - (int)sizeF.Height) / 2 + 2;
g.DrawString(strText, Font, Brushes.White, new Point(this.Width - 2 - (this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2 - (int)sizeF.Width / 2, intTextY));
}
}
}
else
{
var fillColor = m_checked ? m_trueColor : m_falseColor;
int intLineHeight = (this.Height - 2 - 4) / 2;
GraphicsPath path = new GraphicsPath();
path.AddLine(new Point(this.Height / 2, (this.Height - intLineHeight) / 2), new Point(this.Width - this.Height / 2, (this.Height - intLineHeight) / 2));
path.AddArc(new Rectangle(this.Width - this.Height / 2 - intLineHeight - 1, (this.Height - intLineHeight) / 2, intLineHeight, intLineHeight), -90, 180);
path.AddLine(new Point(this.Width - this.Height / 2, (this.Height - intLineHeight) / 2 + intLineHeight), new Point(this.Width - this.Height / 2, (this.Height - intLineHeight) / 2 + intLineHeight));
path.AddArc(new Rectangle(this.Height / 2, (this.Height - intLineHeight) / 2, intLineHeight, intLineHeight), 90, 180);
g.FillPath(new SolidBrush(fillColor), path);
if (m_checked)
{
g.FillEllipse(new SolidBrush(fillColor), new Rectangle(this.Width - this.Height - 1 + 2, 1 + 2, this.Height - 2 - 4, this.Height - 2 - 4));
g.FillEllipse(Brushes.White, new Rectangle(this.Width - 2 - (this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2 - 4, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
else
{
g.FillEllipse(new SolidBrush(fillColor), new Rectangle(1 + 2, 1 + 2, this.Height - 2 - 4, this.Height - 2 - 4));
g.FillEllipse(Brushes.White, new Rectangle((this.Height - 2 - 4) / 2 - ((this.Height - 2 - 4) / 2) / 2 + 4, (this.Height - 2 - (this.Height - 2 - 4) / 2) / 2 + 1, (this.Height - 2 - 4) / 2, (this.Height - 2 - 4) / 2));
}
}
}
}
public enum SwitchType
{
/// <summary>
/// 椭圆
/// </summary>
Ellipse,
/// <summary>
/// 四边形
/// </summary>
Quadrilateral,
/// <summary>
/// 横线
/// </summary>
Line
}
}
namespace HZH_Controls.Controls
{
partial class UCSwitch
{
/// <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();
//
// UCSwitch
//
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.BackColor = System.Drawing.Color.Transparent;
this.Name = "UCSwitch";
this.Size = new System.Drawing.Size(83, 31);
this.ResumeLayout(false);
}
#endregion
}
}
用处及效果

最后的话
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作者:冰封一夏
出处: http://www.hzhcontrols.com/doc.html
本文版权归作者和博客园共有,欢迎转载,但未经作者同意必须保留此段声明,
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GitHub:https://github.com/kwwwvagaa/NetWinformControl
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