lserp_cs_6.0/插件库/Lskj.Control/CircleButton.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using Lskj.Business.Impl;

namespace Lskj.Control
{
    public partial class CircleButton : Button
    {
        private int radius;//半径   

        //圆形按钮的半径属性  
        [CategoryAttribute("布局"), BrowsableAttribute(true), ReadOnlyAttribute(false)]
        public int Radius
        {
            set
            {
                radius = value;
                this.Height = this.Width = Radius;
            }
            get
            {
                return radius;
            }
        }

        private Image imageEnter;
        [CategoryAttribute("外观"), BrowsableAttribute(true), ReadOnlyAttribute(false)]
        public Image ImageEnter
        {
            set
            {
                imageEnter = value;
            }
            get
            {
                return imageEnter;
            }
        }

        private Image imageNormal;
        [CategoryAttribute("外观"), BrowsableAttribute(true), ReadOnlyAttribute(false)]
        public Image ImageNormal
        {
            set
            {
                imageNormal = value;
                BackgroundImage = imageNormal;
            }
            get
            {
                return imageNormal;
            }
        }

        //以下代码用于在VS中隐藏BackgroundImage属性，使得只能通过Diameter设置Height和Width  
        [BrowsableAttribute(false)]
        public new Image BackgroundImage
        {
            get
            {
                return base.BackgroundImage;
            }
            set
            {
                base.BackgroundImage = value;

            }
        }

        //以下代码用于在VS中隐藏Size属性，使得只能通过Diameter设置Height和Width  
        [BrowsableAttribute(false)]
        public new Size Size
        {
            get
            {
                return base.Size;
            }
            set
            {
                base.Size = value;

            }
        }

        public CircleButton()
        {
            Radius = 64;
            this.Height = this.Width = Radius;
            this.FlatStyle = FlatStyle.Flat;
            this.FlatAppearance.BorderSize = 0;
            this.BackgroundImage = imageEnter;
            this.BackgroundImageLayout = ImageLayout.Stretch;
        }

        //重写OnPaint  
        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
        {
            try {
                base.OnPaint(e);
                System.Drawing.Drawing2D.GraphicsPath path = new System.Drawing.Drawing2D.GraphicsPath();
                path.AddEllipse(0, 0, Radius, Radius);
                this.Region = new Region(path);
            }
            catch (Exception ex)
            {
                string Message = ErrorMessage.PromptErrorMessage(ex);
                MessageUtil.Show(Message,ex.Message);
            } 
           
        }

        //重写OnMouseEnter  
        //protected override void OnMouseEnter(EventArgs e)  
        //{  
        //    Graphics g = this.CreateGraphics();  
        //    g.DrawEllipse(new Pen(Color.Blue), 0, 0, this.Width, this.Height);  
        //    g.Dispose();  
        //}  

        //重写OnSizeChanged  
        protected override void OnSizeChanged(EventArgs e)
        {
            try {
                base.OnSizeChanged(e);
                if (Height != Radius)
                {
                    Radius = Width = Height;
                }
                else if (Width != Radius)
                {
                    Radius = Height = Width;
                }
            }
            catch (Exception ex)
            {
                string Message = ErrorMessage.PromptErrorMessage(ex);
                MessageUtil.Show(Message,ex.Message);
            } 
          

        }

        //重写OnMouseEnter  
        protected override void OnMouseEnter(EventArgs e)
        {
            try {
                base.OnMouseEnter(e);
                BackgroundImage = ImageEnter;
            }
            catch (Exception ex)
            {
                string Message = ErrorMessage.PromptErrorMessage(ex);
                MessageUtil.Show(Message,ex.Message);
            } 
           
        }

        //重写OnMouseLeave  
        protected override void OnMouseLeave(EventArgs e)
        {
            try {
                base.OnMouseLeave(e);
                BackgroundImage = ImageNormal;
            }
            catch (Exception ex)
            {
                string Message = ErrorMessage.PromptErrorMessage(ex);
                MessageUtil.Show(Message,ex.Message);
            } 
           
        }
    }
}