384 lines
12 KiB
C#
384 lines
12 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace JYControl
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{
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//public partial class RoundButton : Button
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//{
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// public RoundButton()
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// {
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// InitializeComponent();
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// }
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// protected override void OnPaint(PaintEventArgs pe)
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// {
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// base.OnPaint(pe);
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// }
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//}
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public partial class RoundButton : Button
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{
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#region --成员变量--
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RectangleF rect = new RectangleF();//控件矩形
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bool mouseEnter;//鼠标是否进入控件区域的标志
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bool buttonPressed;//按钮是否按下
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bool buttonClicked;//按钮是否被点击
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#endregion
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#region --属性--
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#region 形状
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/// <summary>
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/// 设置或获取圆形按钮的圆的边距离方框边的距离
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/// </summary>
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[Browsable(true), DefaultValue(2)]
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[Category("Appearance")]
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public int DistanceToBorder { get; set; }
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#endregion
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#region 填充色
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/// <summary>
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/// 获取或设置按钮主体颜色
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/// </summary>
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/// <value>The color of the focus.</value>
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[Browsable(true), DefaultValue(typeof(Color), "DodgerBlue"), Description("按钮主体渐变起始颜色")]
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[Category("Appearance")]
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public Color ButtonCenterColorEnd { get; set; }
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/// <summary>
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/// 获取或设置按钮主体颜色
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/// </summary>
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[Browsable(true), DefaultValue(typeof(Color), "CornflowerBlue"), Description("按钮主体渐变终点颜色")]
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[Category("Appearance")]
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public Color ButtonCenterColorStart { get; set; }
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/// <summary>
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/// 获取或设置按钮主体颜色渐变方向
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/// </summary>
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[Browsable(true), DefaultValue(90), Description("按钮主体颜色渐变方向，X轴顺时针开始")]
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[Category("Appearance")]
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public int GradientAngle { get; set; }
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/// <summary>
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/// 是否显示中间标志
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/// </summary>
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[Browsable(true), DefaultValue(typeof(bool), "true"), Description("是否显示中间标志")]
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[Category("Appearance")]
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public bool IsShowIcon { get; set; }
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/// <summary>
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/// 按钮中间标志填充色
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/// </summary>
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[Browsable(true), DefaultValue(typeof(Color), "Black"), Description("按钮中间标志填充色")]
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[Category("Appearance")]
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public Color IconColor { get; set; }
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#endregion
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#region 边框
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/// <summary>
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/// 获取或设置边框大小
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/// </summary>
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[Browsable(true), DefaultValue(4), Description("按钮边框大小")]
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[Category("Appearance")]
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public int BorderWidth { get; set; }
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/// <summary>
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/// 获取或设置按钮边框颜色
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/// </summary>
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/// <value>The color of the focus.</value>
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[Browsable(true), DefaultValue(typeof(Color), "Black"), Description("按钮边框颜色")]
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[Category("Appearance")]
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public Color BorderColor { get; set; }
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/// <summary>
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/// 获取或设置边框透明度
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/// </summary>
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[Browsable(true), DefaultValue(200), Description("设置边框透明度：0-255")]
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[Category("Appearance")]
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public int BorderTransparent { get; set; }
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/// <summary>
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/// 获取或设置按钮获取焦点后边框颜色
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/// </summary>
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/// <value>The color of the focus.</value>
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[Browsable(true), DefaultValue(typeof(Color), "Orange"), Description("按钮获得焦点后的边框颜色")]
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[Category("Appearance")]
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public Color FocusBorderColor { get; set; }
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#endregion
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#endregion
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#region --构造函数--
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/// <summary>
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/// 构造函数
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/// </summary>
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public RoundButton()
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{
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// 控件风格
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SetStyle(ControlStyles.SupportsTransparentBackColor, true);
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SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
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SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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SetStyle(ControlStyles.ResizeRedraw, true);
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SetStyle(ControlStyles.UserPaint, true);
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//初始值设定
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this.Height = this.Width = 80;
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DistanceToBorder = 4;
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ButtonCenterColorStart = Color.CornflowerBlue;
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ButtonCenterColorEnd = Color.DodgerBlue;
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BorderColor = Color.Black;
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FocusBorderColor = Color.Orange;
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IconColor = Color.Black;
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BorderWidth = 4;
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BorderTransparent = 200;
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GradientAngle = 90;
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mouseEnter = false;
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buttonPressed = false;
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buttonClicked = false;
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IsShowIcon = true;
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InitializeComponent();
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}
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#endregion
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#region --重写部分事件--
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#region OnPaint事件
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/// <summary>
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/// 控件绘制
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/// </summary>
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/// <param name="pevent"></param>
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protected override void OnPaint(PaintEventArgs pevent)
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{
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//base.OnPaint(pevent);
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base.OnPaintBackground(pevent);
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Graphics g = pevent.Graphics;
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g.InterpolationMode = InterpolationMode.HighQualityBicubic;
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g.SmoothingMode = SmoothingMode.AntiAlias;//抗锯齿
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myResize();//调整圆形区域
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var brush = new LinearGradientBrush(rect, ButtonCenterColorStart, ButtonCenterColorEnd, GradientAngle);
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PaintShape(g, brush, rect);//绘制按钮中心区域
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DrawBorder(g);//绘制边框
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DrawStateIcon(g);//绘制按钮功能标志
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if (mouseEnter)
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{
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DrawHighLight(g);//绘制高亮区域
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DrawStateIcon(g);//绘制按钮功能标志
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}
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}
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#endregion
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#region 鼠标
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/// <summary>
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/// 鼠标点击事件
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/// </summary>
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/// <param name="e"></param>
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protected override void OnMouseClick(MouseEventArgs e)
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{
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base.OnMouseClick(e);
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buttonClicked = !buttonClicked;
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}
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/// <summary>
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/// Raises the <see cref="E:System.Windows.Forms.Control.MouseUp"/> event.
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/// </summary>
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/// <param name="e">A <see cref="T:System.Windows.Forms.MouseEventArgs"/> that contains the event data.</param>
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protected override void OnMouseUp(MouseEventArgs e)
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{
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base.OnMouseUp(e);
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if (e.Button != MouseButtons.Left) return;
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buttonPressed = false;
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base.Invalidate();
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}
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/// <summary>
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/// Raises the <see cref="E:System.Windows.Forms.Control.MouseDown"/> event.
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/// </summary>
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/// <param name="e">A <see cref="T:System.Windows.Forms.MouseEventArgs"/> that contains the event data.</param>
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protected override void OnMouseDown(MouseEventArgs e)
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{
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base.OnMouseDown(e);
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if (e.Button != MouseButtons.Left) return;
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buttonPressed = true;
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}
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/// <summary>
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/// 鼠标进入按钮
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/// </summary>
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/// <param name="e"></param>
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protected override void OnMouseEnter(EventArgs e)
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{
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base.OnMouseEnter(e);
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mouseEnter = true;
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}
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/// <summary>
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/// 鼠标离开控件
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/// </summary>
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/// <param name="e"></param>
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protected override void OnMouseLeave(EventArgs e)
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{
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base.OnMouseLeave(e);
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mouseEnter = false;
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}
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#endregion
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#endregion
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#region --自定义函数--
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/// <summary>
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/// 绘制中心区域标志
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/// </summary>
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/// <param name="g"></param>
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private void DrawStateIcon(Graphics g)
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{
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if (IsShowIcon)
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{
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if (buttonClicked)
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{
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GraphicsPath startIconPath = new GraphicsPath();
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int W = base.Width / 3;
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Point p1 = new Point(W, W);
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Point p2 = new Point(2 * W, W);
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Point p3 = new Point(2 * W, 2 * W);
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Point p4 = new Point(W, 2 * W);
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Point[] pts = { p1, p2, p3, p4 };
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startIconPath.AddLines(pts);
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Brush brush = new SolidBrush(IconColor);
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g.FillPath(brush, startIconPath);
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}
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else
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{
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GraphicsPath stopIconPath = new GraphicsPath();
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int W = base.Width / 4;
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Point p1 = new Point(3 * W / 2, W);
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Point p2 = new Point(3 * W / 2, 3 * W);
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Point p3 = new Point(3 * W, 2 * W);
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Point[] pts = { p1, p2, p3, };
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stopIconPath.AddLines(pts);
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Brush brush = new SolidBrush(IconColor);
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g.FillPath(brush, stopIconPath);
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}
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}
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}
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/// <summary>
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/// 重新确定控件大小
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/// </summary>
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protected void myResize()
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{
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int x = DistanceToBorder;
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int y = DistanceToBorder;
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int width = this.Width - 2 * DistanceToBorder;
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int height = this.Height - 2 * DistanceToBorder;
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rect = new RectangleF(x, y, width, height);
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}
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/// <summary>
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/// 绘制高亮效果
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/// </summary>
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/// <param name="g">Graphic对象</param>
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protected virtual void DrawHighLight(Graphics g)
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{
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RectangleF highlightRect = rect;
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highlightRect.Inflate(-BorderWidth / 2, -BorderWidth / 2);
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Brush brush = Brushes.DodgerBlue;
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if (buttonPressed)
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{
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brush = new LinearGradientBrush(rect, ButtonCenterColorStart, ButtonCenterColorEnd, GradientAngle);
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}
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else
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{
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brush = new LinearGradientBrush(rect, Color.FromArgb(60, Color.White),
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Color.FromArgb(60, Color.White), GradientAngle);
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}
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PaintShape(g, brush, highlightRect);
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}
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/// <summary>
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/// 绘制边框
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/// </summary>
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/// <param name="g">Graphics对象</param>
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protected virtual void DrawBorder(Graphics g)
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{
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Pen p = new Pen(BorderColor);
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if (Focused)
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{
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p.Color = FocusBorderColor;//外圈获取焦点后的颜色
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p.Width = BorderWidth;
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PaintShape(g, p, rect);
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}
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else
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{
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p.Width = BorderWidth;
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PaintShape(g, p, rect);
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}
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="g">Graphic对象</param>
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protected virtual void DrawPressState(Graphics g)
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{
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RectangleF pressedRect = rect;
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pressedRect.Inflate(-2, -2);
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Brush brush = new LinearGradientBrush(rect, Color.FromArgb(60, Color.White),
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Color.FromArgb(60, Color.White), GradientAngle);
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PaintShape(g, brush, pressedRect);
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}
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/// <summary>
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/// 绘制图形
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/// </summary>
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/// <param name="g">Graphics对象</param>
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/// <param name="pen">Pen对象</param>
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/// <param name="rect">RectangleF对象</param>
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protected virtual void PaintShape(Graphics g, Pen pen, RectangleF rect)
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{
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g.DrawEllipse(pen, rect);
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}
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/// <summary>
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/// 绘制图形
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/// </summary>
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/// <param name="g">Graphics对象</param>
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/// <param name="brush">Brush对象</param>
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/// <param name="rect">Rectangle对象</param>
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protected virtual void PaintShape(Graphics g, Brush brush, RectangleF rect)
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{
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g.FillEllipse(brush, rect);
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}
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#endregion
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}
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}
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