文章目录
用处及效果

准备工作
依然使用GDI+绘画,这个比较简单,就是画圆
开始
新增一个类UCSignalLamp,继承UserControl
添加属性
/// <summary>
/// The is show border
/// </summary>
private bool isShowBorder = false;
/// <summary>
/// Gets or sets a value indicating whether this instance is show border.
/// </summary>
/// <value><c>true</c> if this instance is show border; otherwise, <c>false</c>.</value>
[Description("是否显示边框"), Category("自定义")]
public bool IsShowBorder
{
get { return isShowBorder; }
set
{
isShowBorder = value;
Refresh();
}
}
/// <summary>
/// The lamp color
/// </summary>
private Color[] lampColor = new Color[] { Color.FromArgb(255, 77, 59) };
/// <summary>
/// Gets or sets the color of the lamp.
/// </summary>
/// <value>The color of the lamp.</value>
[Description("灯颜色,当需要闪烁时,至少需要2个及以上颜色,不需要闪烁则至少需要1个颜色"), Category("自定义")]
public Color[] LampColor
{
get { return lampColor; }
set
{
if (value == null || value.Length <= 0)
return;
lampColor = value;
Refresh();
}
}
/// <summary>
/// The is highlight
/// </summary>
private bool isHighlight = true;
/// <summary>
/// Gets or sets a value indicating whether this instance is highlight.
/// </summary>
/// <value><c>true</c> if this instance is highlight; otherwise, <c>false</c>.</value>
[Description("是否高亮显示"), Category("自定义")]
public bool IsHighlight
{
get { return isHighlight; }
set
{
isHighlight = value;
Refresh();
}
}
/// <summary>
/// The twinkle speed
/// </summary>
private int twinkleSpeed = 0;
/// <summary>
/// Gets or sets the twinkle speed.
/// </summary>
/// <value>The twinkle speed.</value>
[Description("闪烁间隔时间(毫秒),当为0时不闪烁"), Category("自定义")]
public int TwinkleSpeed
{
get { return twinkleSpeed; }
set
{
if (value < 0)
return;
twinkleSpeed = value;
if (value == 0 || lampColor.Length <= 1)
{
timer.Enabled = false;
}
else
{
intColorIndex = 0;
timer.Interval = value;
timer.Enabled = true;
}
Refresh();
}
}
/// <summary>
/// The timer
/// </summary>
Timer timer;
/// <summary>
/// The int color index
/// </summary>
int intColorIndex = 0;
重绘
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var g = e.Graphics;
g.SetGDIHigh();
Color c1 = lampColor[intColorIndex];
g.FillEllipse(new SolidBrush(c1), this.ClientRectangle);
if (isHighlight)
{
GraphicsPath gp = new GraphicsPath();
Rectangle rec = new Rectangle(5, 5, this.Width - 10, this.Height - 10);
gp.AddEllipse(rec);
Color[] surroundColor = new Color[] { c1 };
PathGradientBrush pb = new PathGradientBrush(gp);
pb.CenterColor = Color.White;
pb.SurroundColors = surroundColor;
g.FillPath(pb, gp);
}
if (isShowBorder)
{
g.DrawEllipse(new Pen(new SolidBrush(this.BackColor), 2), new Rectangle(4, 4, this.Width - 8, this.Height - 8));
}
}
全部代码
// ***********************************************************************
// Assembly : HZH_Controls
// Created : 2019-09-09
//
// ***********************************************************************
// <copyright file="UCSignalLamp.cs">
// Copyright by Huang Zhenghui(黄正辉) All, QQ group:568015492 QQ:623128629 Email:623128629@qq.com
// </copyright>
//
// Blog: https://www.cnblogs.com/bfyx
// GitHub:https://github.com/kwwwvagaa/NetWinformControl
// gitee:https://gitee.com/kwwwvagaa/net_winform_custom_control.git
//
// If you use this code, please keep this note.
// ***********************************************************************
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.ComponentModel;
namespace HZH_Controls.Controls.FactoryControls.Lamp
{
/// <summary>
/// Class UCSignalLamp.
/// Implements the <see cref="System.Windows.Forms.UserControl" />
/// </summary>
/// <seealso cref="System.Windows.Forms.UserControl" />
public class UCSignalLamp : UserControl
{
/// <summary>
/// The is show border
/// </summary>
private bool isShowBorder = false;
/// <summary>
/// Gets or sets a value indicating whether this instance is show border.
/// </summary>
/// <value><c>true</c> if this instance is show border; otherwise, <c>false</c>.</value>
[Description("是否显示边框"), Category("自定义")]
public bool IsShowBorder
{
get { return isShowBorder; }
set
{
isShowBorder = value;
Refresh();
}
}
/// <summary>
/// The lamp color
/// </summary>
private Color[] lampColor = new Color[] { Color.FromArgb(255, 77, 59) };
/// <summary>
/// Gets or sets the color of the lamp.
/// </summary>
/// <value>The color of the lamp.</value>
[Description("灯颜色,当需要闪烁时,至少需要2个及以上颜色,不需要闪烁则至少需要1个颜色"), Category("自定义")]
public Color[] LampColor
{
get { return lampColor; }
set
{
if (value == null || value.Length <= 0)
return;
lampColor = value;
Refresh();
}
}
/// <summary>
/// The is highlight
/// </summary>
private bool isHighlight = true;
/// <summary>
/// Gets or sets a value indicating whether this instance is highlight.
/// </summary>
/// <value><c>true</c> if this instance is highlight; otherwise, <c>false</c>.</value>
[Description("是否高亮显示"), Category("自定义")]
public bool IsHighlight
{
get { return isHighlight; }
set
{
isHighlight = value;
Refresh();
}
}
/// <summary>
/// The twinkle speed
/// </summary>
private int twinkleSpeed = 0;
/// <summary>
/// Gets or sets the twinkle speed.
/// </summary>
/// <value>The twinkle speed.</value>
[Description("闪烁间隔时间(毫秒),当为0时不闪烁"), Category("自定义")]
public int TwinkleSpeed
{
get { return twinkleSpeed; }
set
{
if (value < 0)
return;
twinkleSpeed = value;
if (value == 0 || lampColor.Length <= 1)
{
timer.Enabled = false;
}
else
{
intColorIndex = 0;
timer.Interval = value;
timer.Enabled = true;
}
Refresh();
}
}
/// <summary>
/// The timer
/// </summary>
Timer timer;
/// <summary>
/// The int color index
/// </summary>
int intColorIndex = 0;
/// <summary>
/// Initializes a new instance of the <see cref="UCSignalLamp"/> class.
/// </summary>
public UCSignalLamp()
{
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.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.Size = new Size(50, 50);
this.SizeChanged += UCSignalLamp_SizeChanged;
timer = new Timer();
timer.Interval = 200;
timer.Tick += timer_Tick;
}
/// <summary>
/// Handles the Tick event of the timer control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
void timer_Tick(object sender, EventArgs e)
{
intColorIndex++;
if (intColorIndex >= lampColor.Length)
intColorIndex = 0;
Refresh();
}
/// <summary>
/// Handles the SizeChanged event of the UCSignalLamp control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
void UCSignalLamp_SizeChanged(object sender, EventArgs e)
{
var maxSize = Math.Min(this.Width, this.Height);
if (this.Width != maxSize)
this.Width = maxSize;
if (this.Height != maxSize)
this.Height = maxSize;
}
/// <summary>
/// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
/// </summary>
/// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var g = e.Graphics;
g.SetGDIHigh();
Color c1 = lampColor[intColorIndex];
g.FillEllipse(new SolidBrush(c1), this.ClientRectangle);
if (isHighlight)
{
GraphicsPath gp = new GraphicsPath();
Rectangle rec = new Rectangle(5, 5, this.Width - 10, this.Height - 10);
gp.AddEllipse(rec);
Color[] surroundColor = new Color[] { c1 };
PathGradientBrush pb = new PathGradientBrush(gp);
pb.CenterColor = Color.White;
pb.SurroundColors = surroundColor;
g.FillPath(pb, gp);
}
if (isShowBorder)
{
g.DrawEllipse(new Pen(new SolidBrush(this.BackColor), 2), new Rectangle(4, 4, this.Width - 8, this.Height - 8));
}
}
}
}
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
作者:冰封一夏
出处: http://www.hzhcontrols.com/doc.html
HZHControls官网:http://www.hzhcontrols.com
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,
且在文章页面明显位置给出原文连接,否则保留追究法律责任的权利。
GitHub:https://github.com/kwwwvagaa/NetWinformControl
码云:https://gitee.com/kwwwvagaa/net_winform_custom_control.git