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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
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NuGet
Install-Package HZH_Controls
目录
https://www.cnblogs.com/bfyx/p/11364884.html
准备工作
前面写过一个进度条，但是并不是太好，这次用GDI+再重绘一个，不了解GDI+的自行百度了解下先
开始
添加一个类，命名UCProcessLine，继承Control
添加一个枚举，用以如何显示值
public enum ValueTextType
{
None,
/// <summary>
/// 百分比
/// </summary>
Percent,
/// <summary>
/// 数值
/// </summary>
Absolute
}
添加一些属性
[Description("值变更事件"), Category("自定义")]
public event EventHandler ValueChanged;
int m_value = ;
[Description("当前属性"), Category("自定义")]
public int Value
{
set
{
if (value > m_maxValue)
m_value = m_maxValue;
else if (value < )
m_value = ;
else
m_value = value;
if (ValueChanged != null)
ValueChanged(this, null);
Refresh();
}
get
{
return m_value;
}
}
private int m_maxValue = ;
[Description("最大值"), Category("自定义")]
public int MaxValue
{
get { return m_maxValue; }
set
{
if (value < m_value)
m_maxValue = m_value;
else
m_maxValue = value;
Refresh();
}
}
Color m_valueColor = Color.FromArgb(, , );
[Description("值进度条颜色"), Category("自定义")]
public Color ValueColor
{
get { return m_valueColor; }
set
{
m_valueColor = value;
Refresh();
}
}
private Color m_valueBGColor = Color.White;
[Description("值背景色"), Category("自定义")]
public Color ValueBGColor
{
get { return m_valueBGColor; }
set
{
m_valueBGColor = value;
Refresh();
}
}
private Color m_borderColor = Color.FromArgb(, , );
[Description("边框颜色"), Category("自定义")]
public Color BorderColor
{
get { return m_borderColor; }
set
{
m_borderColor = value;
Refresh();
}
}
[Description("值字体"), Category("自定义")]
public override Font Font
{
get
{
return base.Font;
}
set
{
base.Font = value;
Refresh();
}
}
[Description("值字体颜色"), Category("自定义")]
public override System.Drawing.Color ForeColor
{
get
{
return base.ForeColor;
}
set
{
base.ForeColor = value;
Refresh();
}
}
private ValueTextType m_valueTextType = ValueTextType.Percent;
[Description("值显示样式"), Category("自定义")]
public ValueTextType ValueTextType
{
get { return m_valueTextType; }
set
{
m_valueTextType = value;
Refresh();
}
}
重绘
protected override void OnPaint(PaintEventArgs e)
{
Console.WriteLine(DateTime.Now);
base.OnPaint(e);
Graphics g = e.Graphics;
g.SetGDIHigh(); Brush sb = new SolidBrush(m_valueBGColor);
g.FillRectangle(sb, new Rectangle(base.ClientRectangle.X, base.ClientRectangle.Y, base.ClientRectangle.Width - , base.ClientRectangle.Height - ));
GraphicsPath path1 = ControlHelper.CreateRoundedRectanglePath(new Rectangle(base.ClientRectangle.X, base.ClientRectangle.Y + , base.ClientRectangle.Width - , base.ClientRectangle.Height - ), );
g.DrawPath(new Pen(m_borderColor, ), path1);
LinearGradientBrush lgb = new LinearGradientBrush(new Point(, ), new Point(, base.ClientRectangle.Height - ), m_valueColor, Color.FromArgb(, m_valueColor.R, m_valueColor.G, m_valueColor.B));
g.FillPath(lgb, ControlHelper.CreateRoundedRectanglePath(new Rectangle(, (base.ClientRectangle.Height - (base.ClientRectangle.Height - )) / , (base.ClientRectangle.Width - ) * Value / m_maxValue, base.ClientRectangle.Height - ), ));
string strValue = string.Empty;
if (m_valueTextType == HZH_Controls.Controls.ValueTextType.Percent)
strValue = ((float)Value / (float)m_maxValue).ToString("0%");
else if (m_valueTextType == HZH_Controls.Controls.ValueTextType.Absolute)
strValue = Value + "/" + m_maxValue;
if (!string.IsNullOrEmpty(strValue))
{
System.Drawing.SizeF sizeF = g.MeasureString(strValue, Font);
g.DrawString(strValue, Font, new SolidBrush(ForeColor), new PointF((this.Width - sizeF.Width) / , (this.Height - sizeF.Height) / + ));
}
}
完整代码来一份
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 class UCProcessLine : Control
{
[Description("值变更事件"), Category("自定义")]
public event EventHandler ValueChanged;
int m_value = ;
[Description("当前属性"), Category("自定义")]
public int Value
{
set
{
if (value > m_maxValue)
m_value = m_maxValue;
else if (value < )
m_value = ;
else
m_value = value;
if (ValueChanged != null)
ValueChanged(this, null);
Refresh();
}
get
{
return m_value;
}
} private int m_maxValue = ; [Description("最大值"), Category("自定义")]
public int MaxValue
{
get { return m_maxValue; }
set
{
if (value < m_value)
m_maxValue = m_value;
else
m_maxValue = value;
Refresh();
}
} Color m_valueColor = Color.FromArgb(, , ); [Description("值进度条颜色"), Category("自定义")]
public Color ValueColor
{
get { return m_valueColor; }
set
{
m_valueColor = value;
Refresh();
}
} private Color m_valueBGColor = Color.White; [Description("值背景色"), Category("自定义")]
public Color ValueBGColor
{
get { return m_valueBGColor; }
set
{
m_valueBGColor = value;
Refresh();
}
} private Color m_borderColor = Color.FromArgb(, , ); [Description("边框颜色"), Category("自定义")]
public Color BorderColor
{
get { return m_borderColor; }
set
{
m_borderColor = value;
Refresh();
}
} [Description("值字体"), Category("自定义")]
public override Font Font
{
get
{
return base.Font;
}
set
{
base.Font = value;
Refresh();
}
} [Description("值字体颜色"), Category("自定义")]
public override System.Drawing.Color ForeColor
{
get
{
return base.ForeColor;
}
set
{
base.ForeColor = value;
Refresh();
}
}
private ValueTextType m_valueTextType = ValueTextType.Percent; [Description("值显示样式"), Category("自定义")]
public ValueTextType ValueTextType
{
get { return m_valueTextType; }
set
{
m_valueTextType = value;
Refresh();
}
}
public UCProcessLine()
{
Size = new Size(, );
ForeColor = Color.FromArgb(, , );
Font = new Font("Arial Unicode MS", );
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)
{
Console.WriteLine(DateTime.Now);
base.OnPaint(e);
Graphics g = e.Graphics;
g.SetGDIHigh(); Brush sb = new SolidBrush(m_valueBGColor);
g.FillRectangle(sb, new Rectangle(base.ClientRectangle.X, base.ClientRectangle.Y, base.ClientRectangle.Width - , base.ClientRectangle.Height - ));
GraphicsPath path1 = ControlHelper.CreateRoundedRectanglePath(new Rectangle(base.ClientRectangle.X, base.ClientRectangle.Y + , base.ClientRectangle.Width - , base.ClientRectangle.Height - ), );
g.DrawPath(new Pen(m_borderColor, ), path1);
LinearGradientBrush lgb = new LinearGradientBrush(new Point(, ), new Point(, base.ClientRectangle.Height - ), m_valueColor, Color.FromArgb(, m_valueColor.R, m_valueColor.G, m_valueColor.B));
g.FillPath(lgb, ControlHelper.CreateRoundedRectanglePath(new Rectangle(, (base.ClientRectangle.Height - (base.ClientRectangle.Height - )) / , (base.ClientRectangle.Width - ) * Value / m_maxValue, base.ClientRectangle.Height - ), ));
string strValue = string.Empty;
if (m_valueTextType == HZH_Controls.Controls.ValueTextType.Percent)
strValue = ((float)Value / (float)m_maxValue).ToString("0%");
else if (m_valueTextType == HZH_Controls.Controls.ValueTextType.Absolute)
strValue = Value + "/" + m_maxValue;
if (!string.IsNullOrEmpty(strValue))
{
System.Drawing.SizeF sizeF = g.MeasureString(strValue, Font);
g.DrawString(strValue, Font, new SolidBrush(ForeColor), new PointF((this.Width - sizeF.Width) / , (this.Height - sizeF.Height) / + ));
}
} } public enum ValueTextType
{
None,
/// <summary>
/// 百分比
/// </summary>
Percent,
/// <summary>
/// 数值
/// </summary>
Absolute
}
}
用处及效果
最后的话
如果你喜欢的话，请到 https://gitee.com/kwwwvagaa/net_winform_custom_control 点个星 星吧